WO2024101426A1 - 粘着体の巻回体及びその製造方法 - Google Patents
粘着体の巻回体及びその製造方法 Download PDFInfo
- Publication number
- WO2024101426A1 WO2024101426A1 PCT/JP2023/040421 JP2023040421W WO2024101426A1 WO 2024101426 A1 WO2024101426 A1 WO 2024101426A1 JP 2023040421 W JP2023040421 W JP 2023040421W WO 2024101426 A1 WO2024101426 A1 WO 2024101426A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- adhesive
- wound
- thread
- adhesive body
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/26—Presence of textile or fabric
- C09J2400/263—Presence of textile or fabric in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
Definitions
- the present invention relates to a roll of adhesive material and a method for manufacturing the same.
- double-sided tape When bonding two or more types of items, adhesive materials such as double-sided tape are sometimes used, but bonding is difficult when the shapes of the items to be bonded are complex or the bonding area is narrow.
- the double-sided tape may be cut to narrow widths or punched, but a large amount of unnecessary release liners and unnecessary parts after processing are discarded, increasing the amount of waste and CO2 emissions.
- Adhesives are a product form that does not require a release liner, so they can greatly contribute to reducing waste.
- the adhesive does not have a release liner, there are problems with the adhesive strength decreasing and the appearance deteriorating due to glue chipping when the adhesive is stored and transported in a rolled form.
- Patent Document 1 describes winding the thread-like adhesive body around a reel in a traverse winding manner, it does not describe the specific angle of the traverse winding.
- Patent Document 2 describes winding the adhesive body with a separator around a reel in a traverse winding manner (traverse winding), but does not describe the appropriate angle.
- the present invention aims to provide a roll that does not experience a decrease in adhesive strength of the adhesive body after unrolling or a deterioration in appearance due to glue chipping, even if the adhesive body has a configuration in which the adhesive layer is the outermost layer and does not have a release liner.
- the inventors conducted extensive research to solve the above problems. As a result, they discovered that in a wound body formed by traverse winding an adhesive body including an adhesive layer as the outermost layer, by setting the traverse angle within a specific range, the adhesive strength of the adhesive body after unwinding is not reduced and the appearance is not deteriorated due to glue chipping, even if the adhesive body does not have a release liner, and thus completed the present invention.
- the present invention relates to the following.
- a method for producing a roll of an adhesive body including an adhesive layer as an outermost layer comprising the steps of:
- the method for producing a wound body includes a step of winding the adhesive body at a winding angle of 2° to 40°.
- the wound body according to one embodiment of the present invention is a wound body in which an adhesive body including an adhesive layer as the outermost layer is wound in a twill manner, and the twill angle is 2° to 40°. Therefore, even if the adhesive body including an adhesive layer as the outermost layer does not have a release liner, the adhesive strength of the adhesive body does not decrease after unwinding, and the appearance does not deteriorate due to lack of glue.
- FIG. 1 is a schematic diagram of a wound body for explaining the definition of a winding angle.
- the wound body of the present embodiment is a wound body obtained by traversely winding an adhesive body including an adhesive layer as an outermost layer, and has a twill angle of 2° to 40°.
- the twill angle is preferably 5° to 35°, more preferably 10° to 30°, and even more preferably 12° to 28°.
- the roll of the present embodiment is a roll of an adhesive body in which the surfaces of the adhesive layers are in contact with each other, and since the contacting adhesive layers can be peeled off at the interface after adhering to each other, no release liner is required.
- the surfaces of the adhesive layers of the adhesive body are in contact with each other, the adhesive body is wound into a roll, and the roll has a hollow portion.
- Figure 1 is an example that shows a schematic diagram of the definition of the weave angle of the adhesive body in the wound body of this embodiment.
- the twill angle 1 refers to the angle between the rotation direction 2 of the wound body 10 and the adhesive body 4 wound in the width direction 3 of the wound body 10.
- the twill angle 1 is indicated by ⁇ in Figure 1.
- the helix angle 1 changes by -70% or more and +70% or less from the helix angle at the innermost layer part of the wound body 10 (in this specification, the part where the adhesive body is wound around the innermost layer part with a weight of 5 g to 10 g) during winding from the innermost layer part to the outermost layer part (in this specification, the part where the weight of the adhesive body per wound body is 98% or more of the specified winding amount of the wound body).
- a change in the helix angle at the innermost layer of the wound body during winding from the innermost layer to the outermost layer of the wound body of -70% or more and +70% or less means that, for example, when the helix angle at the innermost layer is 10°, the helix angle from the innermost layer to the outermost layer changes in the range of 3° to 17°.
- the twill angle increases from the innermost layer, passes through a maximum value, and then decreases, which has the effect of suppressing the pushing of the yarn in the winding width direction that occurs when a large amount of winding is performed, and the part where it decreases, passes through a minimum value, and then increases has the effect of suppressing a problem called twill drop, in which the adhesive falls off from the winding width and the fallen adhesive gets caught on other parts of the wound body during advanced processing, causing the wound body to break. From this viewpoint, it is particularly preferable that the twill angle gradually increases, gradually decreases, and gradually increases from the innermost layer to the outermost layer.
- the twill angle may or may not be constant, provided that the maximum and minimum values of the twill angle are within the range of 2° to 40°.
- the twill angle is preferably 5° to 35°, more preferably 10° to 30°, and even more preferably 12° to 28°.
- the adhesive strength of the adhesive body after unwinding may decrease and/or the appearance may be deteriorated due to lack of glue.
- the winding diameter of the center of the left and right of the wound body is likely to differ, and the appearance of the wound body may be deteriorated due to high or low edge.
- the helix angle exceeds 40° the adhesive strength of the adhesive body after unwinding may decrease and/or the appearance may deteriorate due to lack of glue, and the length of the wound body in the width direction may need to be made excessively large beyond the normal range, which is inconvenient in manufacturing.
- the winding density may decrease, which may increase the volume of the wound body.
- the traverse control during winding becomes complicated, which may cause mechanical wear and load to be large, leading to the consumption of parts.
- a helix angle of 2° or more prevents the adhesive strength of the adhesive body from decreasing after unwinding and/or prevents the appearance from deteriorating due to glue chipping is as follows: A helix angle of 2° or more prevents the contact area at the intersections between the wound adhesive bodies from becoming excessive, which in turn prevents the adhesive bodies from adhering tightly to each other when the wound body is stored, and prevents the adhesive from falling off when unwinding.
- a helix angle of 40° or less reduces the adhesive strength of the adhesive body after unwinding and/or prevents the appearance from deteriorating due to glue chipping are as follows:
- the helix angle is 40° or less, (i) the frequency with which the adhesive body moves back and forth in the width direction of the roll during unwinding is reduced, preventing the adhesive from falling off due to friction with other adhesive bodies accompanying the movement back and forth in the width direction of the roll, (ii) the frequency with which the adhesive body moves back and forth in the width direction of the roll during unwinding is reduced, preventing the adhesive from falling off due to friction between the unwound adhesive body and the guide roll that receives it accompanying the movement back and forth in the width direction of the roll, (iii) the increase in pressure between the adhesive bodies during storage of the roll due to the contact area at the intersections between the wound adhesive bodies becoming too small is reduced, preventing the adhesive from falling off during unwinding, or a combination of two or more of (i) to (iii).
- the wound body of this embodiment may be in a form in which the adhesive body is wound crosswise around a winding core, or in a form in which the adhesive body is wound crosswise without a winding core.
- the wound body in this embodiment is one in which the adhesive is wound crosswise around a core.
- the material of the core can be any suitable material of the core, but for example, paper, plastic, etc. can be used.
- the outer diameter of the core can be, for example, 4 cm or more and 20 cm or less.
- the inner diameter of the core can be, for example, 3 cm or more and 19 cm or less.
- the width of the core can be, for example, 1 cm or more and 100 cm or less.
- the adhesive body includes an adhesive layer as the outermost layer.
- the adhesive layer is made of an adhesive formed from an adhesive composition.
- the adhesive is not particularly limited, and known adhesives can be used.
- acrylic adhesives, rubber adhesives, vinyl alkyl ether adhesives, silicone adhesives, polyester adhesives, polyamide adhesives, urethane adhesives, fluorine adhesives, epoxy adhesives, etc. can be mentioned.
- acrylic adhesives, urethane adhesives, silicone adhesives, rubber adhesives, or polyester adhesives are preferred, and acrylic adhesives are particularly preferred because the adhesiveness can be easily controlled. Note that only one type of adhesive may be used alone, or two or more types may be used in combination.
- the adhesive in this embodiment is preferably a pressure-sensitive adhesive that has adhesiveness at room temperature and can attach an adherend to its surface by the pressure generated when the surface of the adhesive and the surface of the adherend come into contact with each other. If it is a pressure-sensitive adhesive, it does not require heating and can be applied to adherends that are weak against heat.
- Both solvent-based and water-dispersed adhesives can be used as the adhesive, and it is preferable to use an adhesive in which crosslinking progresses as the adhesive composition dries (solvent evaporation, heating) and the crosslinking is completed quickly after drying. This is because new crosslinking is not increased after the surfaces of the adhesive layers come into contact with each other.
- water-dispersed adhesives are preferred because they allow high-speed coating, are environmentally friendly, and have little effect (swelling, dissolution) on the substrate and core material due to the solvent, and water-dispersed acrylic adhesives are more preferred.
- acrylic adhesive refers to an adhesive that uses an acrylic polymer as the base polymer (the main component of the polymer component, i.e., a component that accounts for 50% or more by weight).
- Acrylic polymer refers to a polymer that uses a monomer having at least one (meth)acryloyl group in one molecule (hereinafter, this may be referred to as "acrylic monomer”) as the main constituent monomer component (the main component of the monomer, i.e., a component that accounts for more than 50% by weight of the total amount of monomers that make up the acrylic polymer).
- acrylic monomer refers to acryloyl and methacryloyl in a comprehensive sense.
- (meth)acrylic acid ester refers to acrylic acid ester and methacrylic acid ester
- (meth)acrylic refers to acrylic and methacrylic in a comprehensive sense.
- the acrylic polymer is preferably, for example, a polymer of a monomer raw material that contains an alkyl (meth)acrylate ester as the main monomer and may further contain a sub-monomer that is copolymerizable with the main monomer.
- the main monomer refers to a component that accounts for more than 50% by weight of the monomer composition in the monomer raw material.
- R1 represents a hydrogen atom or a methyl group
- R2 represents an alkyl group having 2 to 14 carbon atoms.
- Examples of the compound include compounds represented by the following formula:
- R2 examples include an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, an isoamyl group, a hexyl group, a heptyl group, a 2-ethylhexyl group, an isooctyl group, an isononyl group, and an isodecyl group.
- an alkyl group having 2 to 10 carbon atoms such as a butyl group or a 2-ethylhexyl group, is preferred as R2 .
- the above (meth)acrylic acid alkyl esters can be used alone or in combination of two or more kinds.
- the ratio of the (meth)acrylic acid alkyl ester [for example, the above-mentioned (meth)acrylic acid C2-14 alkyl ester] in a monomer mixture containing the (meth)acrylic acid alkyl ester as a main component is generally 80% by weight or more (for example, about 80 to 99.8% by weight), preferably 85% by weight or more (for example, about 85 to 99.5% by weight), and more preferably 90% by weight or more (for example, about 90 to 99% by weight).
- the monomer mixture usually contains a functional group-containing monomer (thermally crosslinkable functional group-containing monomer) to introduce crosslinking points for thermal crosslinking.
- a functional group-containing monomer thermalally crosslinkable functional group-containing monomer
- the adhesive strength to the adherend is also improved.
- Examples of the functional group-containing monomer include carboxyl group-containing monomers such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, crotonic acid, and maleic anhydride, or their acid anhydrides; hydroxyl group-containing monomers such as 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, and 2-hydroxybutyl (meth)acrylate; amide group-containing monomers such as (meth)acrylamide, N,N-dimethyl (meth)acrylamide, N-methylol (meth)acrylamide, N-methoxymethyl (meth)acrylamide, and N-butoxymethyl (meth)acrylamide; amino group-containing monomers such as dimethylaminoethyl (meth)acrylate and t-butylaminoethyl (meth)acrylate; glycidyl group-containing monomers such as glycidyl (meth)acrylate; (meth)acrylonitrile, N
- the amount of the functional group-containing monomer used is, for example, 0.5 to 12 parts by weight, and preferably about 1 to 8 parts by weight, per 100 parts by weight of the (meth)acrylic acid alkyl ester.
- the monomer mixture may contain other copolymerizable monomers as necessary to enhance properties such as cohesive strength.
- copolymerizable monomers include vinyl esters such as methyl (meth)acrylate and vinyl acetate; aromatic vinyl compounds such as styrene and vinyl toluene; (meth)acrylic acid esters of cyclic alcohols such as cyclopentyl di(meth)acrylate and isobornyl (meth)acrylate; and (meth)acrylic acid esters of polyhydric alcohols such as neopentyl glycol di(meth)acrylate, hexanediol di(meth)acrylate, propylene glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, tetramethylolmethane tri(meth)acrylate, and dipentaerythritol hexa(meth)acrylate. These copolymerizable monomers may be used alone or in combination.
- the crosslinking agent used in the acrylic adhesives may be any commonly used crosslinking agent, such as silane-based crosslinking agents, organic peroxides, epoxy-based compounds, amino group-containing compounds, organic metal salts, metal alcoholates, metal chelates, hydrazide-based crosslinking agents, carbodiimide-based crosslinking agents, isocyanate-based crosslinking agents, and silanol-based crosslinking agents.
- organic metal salts, metal chelates, hydrazide-based crosslinking agents, and silane-based crosslinking agents are preferred because crosslinking is completed quickly after drying of the adhesive composition.
- crosslinking agent may be either oil-soluble or water-soluble, and may be used alone or in combination of two or more types.
- silane crosslinking agent it is preferable to use a silane monomer that is copolymerizable with the (meth)acrylic acid alkyl ester.
- the silane monomer is not particularly limited as long as it is a polymerizable compound having a silicon atom, but a silane compound having a (meth)acryloyl group such as a (meth)acryloyloxyalkylsilane derivative is preferable because it has excellent copolymerizability with the (meth)acrylic acid alkyl ester.
- silane monomer examples include ⁇ -methacryloxypropyltrimethoxysilane, 3-acryloyloxypropyltrimethoxysilane, 3-methacryloyloxypropyltriethoxysilane, 3-acryloyloxypropyltriethoxysilane, 3-methacryloyloxypropylmethyldimethoxysilane, 3-acryloyloxypropylmethyldimethoxysilane, 3-methacryloyloxypropylmethyldiethoxysilane, and 3-acryloyloxypropylmethyldiethoxysilane. These silane monomers can be used alone or in combination of two or more.
- copolymerizable silane monomers examples include vinyltrimethoxysilane, vinyltriethoxysilane, 4-vinylbutyltrimethoxysilane, 4-vinylbutyltriethoxysilane, 8-vinyloctyltrimethoxysilane, 8-vinyloctyltriethoxysilane, 10-methacryloyloxydecyltrimethoxysilane, 10-acryloyloxydecyltrimethoxysilane, 10-methacryloyloxydecyltriethoxysilane, and 10-acryloyloxydecyltriethoxysilane.
- the amount of crosslinking agent used can be appropriately selected depending on the type of monomer raw material and the application of the adhesive article.
- the amount of crosslinking agent per 100 parts by weight of the monomer raw material (excluding the crosslinking agent) is preferably 0.005 to 5 parts by weight, and more preferably in the range of 0.01 to 3 parts by weight.
- crosslinking agents may be used, and crosslinking using other crosslinking agents, UV crosslinking, radiation crosslinking such as electron beam crosslinking, etc. may be applied.
- other crosslinking agents commonly used crosslinking agents may be used, and examples of such agents include organic peroxides, epoxy compounds, amino group-containing compounds, organic metal salts, metal alcoholates, metal chelates, hydrazide crosslinking agents, carbodiimide crosslinking agents, isocyanate crosslinking agents, silane or silanol crosslinking agents, etc.
- the other crosslinking agents may be either oil-soluble or water-soluble.
- the pressure-sensitive adhesive layer can be formed using a pressure-sensitive adhesive composition, and the pressure-sensitive adhesive composition is preferably a water-dispersed pressure-sensitive adhesive composition.
- the water-dispersed PSA composition can be prepared, for example, by subjecting a monomer mixture containing the above-mentioned alkyl (meth)acrylate ester as a main component and a silane-based monomer to conventional emulsion polymerization to obtain an aqueous dispersion of a (meth)acrylic acid ester copolymer, and adding thereto, as necessary, the above-mentioned other crosslinking agent.
- the polymerization method can be a general batch polymerization, continuous dropwise polymerization, or divided dropwise polymerization, and the polymerization temperature is, for example, about 20 to 100°C.
- the polymerization initiator used in the polymerization is, for example, 2,2'-azobis[N-(2-carboxyethyl)-2-methylpropionamidine]n-hydrate, 2,2'-azobisisobutyronitrile, 2,2'-azobis(2-methylpropionamidine) disulfate, 2,2'-azobis(2-amidinopropane)dihydrochloride, 2,2'-azobis[2-(5-methyl-2-imidazolin-2-yl)propane]dihydrochloride, 2,2'-azobis(N,N'-dimethyl
- initiators include, but are not limited to, azo initiators such as phenylisobutylamidine; persulfates such as potassium persulfate and ammonium persulfate; peroxide initiators such as benzoyl peroxide, t-butyl hydroperoxide, and hydrogen peroxide; substituted ethane initiators such as phenyl-sub
- a chain transfer agent may also be used in the polymerization.
- the chain transfer agent include conventional chain transfer agents, such as mercaptans such as lauryl mercaptan and dodecanethiol.
- the amount of the chain transfer agent used is, for example, about 0.001 to 0.5 parts by weight per 100 parts by weight of the total amount of monomers.
- anionic emulsifiers such as sodium lauryl sulfate, polyoxyethylene sodium lauryl sulfate, ammonium lauryl sulfate, sodium dodecylbenzenesulfonate, polyoxyethylene alkyl ether sodium sulfate, polyoxyethylene alkyl phenyl ether ammonium sulfate, and polyoxyethylene alkyl phenyl ether sodium sulfate; nonionic emulsifiers such as polyoxyethylene alkyl ether and polyoxyethylene alkyl phenyl ether may be used. These emulsifiers may be used alone or in combination of two or more. The amount of the emulsifier used is, for example, about 0.2 to 10 parts by weight, and preferably about 0.5 to 5 parts by weight, per 100 parts by weight of the total amount of monomers.
- the pressure-sensitive adhesive composition may be prepared by obtaining the (meth)acrylic acid ester copolymer by a method other than emulsion polymerization, adding the crosslinking agent as necessary, and dispersing the copolymer in water with an emulsifier.
- the adhesive composition may also contain, as necessary, a base (such as aqueous ammonia) or an acid to adjust the pH, and additives commonly used in adhesives, such as tackifier resins, thickeners, surfactants, antioxidants, fillers, pigments, and colorants.
- a base such as aqueous ammonia
- additives commonly used in adhesives such as tackifier resins, thickeners, surfactants, antioxidants, fillers, pigments, and colorants.
- tackifier resin for example, one or more types selected from various tackifier resins such as rosin-based resins, rosin derivative resins, petroleum-based resins, terpene-based resins, phenol-based resins, and ketone-based resins can be used.
- the content of the tackifier resin is preferably 60 parts by weight or less, more preferably 50 parts by weight or less, even more preferably 40 parts by weight or less, and particularly preferably 30 parts by weight or less, per 100 parts by weight of the base polymer.
- Thickeners include, for example, polyacrylic acid-based thickeners, urethane-based thickeners, polyvinyl alcohol-based thickeners, etc. Among these, polyacrylic acid-based thickeners and urethane-based thickeners are preferred.
- the content of the thickener is preferably 10 parts by weight or less, and more preferably 5 parts by weight or less, per 100 parts by weight of the base polymer.
- the method for forming the adhesive body of this embodiment is not particularly limited, but for example, when forming the adhesive layer, a method in which the adhesive composition is directly applied to a peelable or non-peeling substrate and then dried or cured (direct method); a method in which the adhesive composition is applied to a peelable surface and then dried or cured to form an adhesive layer on the surface, and then the adhesive layer is attached to a substrate and transferred (transfer method); etc. can be used.
- the adhesive composition can be applied using a conventional coater, such as a gravure roll coater, reverse roll coater, kiss roll coater, dip roll coater, bar coater, knife coater, or spray coater.
- the adhesive composition is applied so that the thickness of the adhesive layer after drying is, for example, about 10 to 100 ⁇ m.
- the drying temperature can be appropriately selected, but is preferably 40° C. to 200° C., more preferably 50° C. to 180° C., and particularly preferably 70° C. to 120° C.
- An appropriate drying time can be selected as appropriate.
- the drying time is preferably 5 seconds to 20 minutes, more preferably 5 seconds to 10 minutes, and particularly preferably 10 seconds to 5 minutes.
- Thermal crosslinking is carried out by a conventional method, for example, by heating to a temperature at which the crosslinking reaction proceeds depending on the type of crosslinking agent.
- the solvent-insoluble portion of the crosslinked adhesive layer is, for example, about 5 to 70% by weight.
- the molecular weight (weight average molecular weight; standard polystyrene equivalent) of the solvent-soluble portion of the crosslinked adhesive layer is, for example, about 100,000 to 600,000, preferably about 200,000 to 450,000.
- the molecular weight of the solvent-insoluble portion and solvent-soluble portion of the crosslinked adhesive layer can be set as desired, for example, by appropriately adjusting the ratio of the crosslinking agent or functional group-containing monomer to the total amount of monomers, the type and amount of the chain transfer agent, and particularly the amounts of the crosslinking agent and chain transfer agent.
- the linear adhesive body can be obtained, for example, by the following method.
- an adhesive body for example, an adhesive body containing a core material and an adhesive agent can be mentioned.
- the method of forming the linear adhesive body is not particularly limited, but for example, a method of preparing an adhesive composition constituting the adhesive body, applying it linearly on a release liner using a dispenser to form an adhesive body once, and then removing the release liner can be mentioned.
- the adhesive body is an adhesive body having a core material and an adhesive layer
- the adhesive composition can be applied to the surface of the core material by dipping, immersion, coating, etc., and then heated and dried to form an adhesive layer on the surface of the core material.
- the application of the adhesive composition can be performed using a conventional coater such as a gravure roll coater, reverse roll coater, kiss roll coater, dip roll coater, bar coater, knife coater, spray coater, etc.
- the drying temperature can be appropriately adopted, but is preferably 40°C to 200°C, more preferably 50°C to 180°C, and particularly preferably 70°C to 120°C.
- the drying time can be appropriately adopted. The drying time is preferably 5 seconds to 20 minutes, more preferably 5 seconds to 10 minutes, and particularly preferably 10 seconds to 5 minutes.
- the diameter of the cross-section of the adhesive body is not particularly limited, but since a diameter that is too small may cause the adhesive body to break easily, it is preferable that the diameter is, for example, 20 ⁇ m or more, and more preferably 50 ⁇ m or more. Furthermore, since a diameter that is too large may cause the adhesive body to lack flexibility, it is preferable that the diameter is, for example, 1000 ⁇ m or less, and more preferably 500 ⁇ m or less.
- the adhesive layer may cover the entire surface of the core material (surface in the longitudinal direction), or may cover only a part of the surface of the core material.
- the adhesive layer is typically formed continuously, but is not limited to such a form, and may be formed in a regular or random pattern such as dots or stripes.
- the end faces of the core material may or may not be covered by the adhesive layer. For example, in cases where the adhesive article is cut during the manufacturing process or during use, the end faces of the core material may not be covered by the adhesive layer.
- the core material used in the adhesive is not particularly limited, but may be, for example, a resin, rubber, foam, inorganic fiber, or a composite of these. From the viewpoint of maintaining the shape of the adhesive, it is preferable that the adhesive strength between the adhesive layer and the core material is higher than the self-adhesive strength between the adhesive layers.
- resins include polyolefins such as polyethylene (PE), polypropylene (PP), ethylene-propylene copolymer, and ethylene-vinyl acetate copolymer; polyesters such as polyethylene terephthalate (PET); vinyl chloride resins; vinyl acetate resins; polyimide resins; polyamide resins; fluorine-based resins; and the like.
- Examples of rubbers include synthetic rubbers such as natural rubber and urethane rubber; examples of foams include polyurethane foam and polychloroprene rubber foam; examples of fibers include glass fiber, carbon fiber, and metal fiber; and the like.
- the cross-sectional shape of the core material is not particularly limited, but it usually has a cross-sectional shape corresponding to the cross-sectional shape of the adhesive article.
- the material of the thread-like core material that can be used for the thread-like adhesive body is not particularly limited, and may be chemical fiber or natural fiber.
- chemical fibers include various polymer materials such as rayon, cupra, acetate, promix, nylon, aramid, vinylon, vinylidene, polyvinyl chloride, polyester, acrylic, polyethylene, polypropylene, polyurethane, polychlar, polylactic acid, glass, carbon fiber, synthetic rubber such as polyurethane, metal, etc.
- natural fibers include silk, natural rubber, cotton, wool, etc.
- polyester is preferred as the material of the core material because it is easy to control the physical properties such as diameter and tensile strength, and polyethylene terephthalate (PET) is more preferred.
- the thread-like core material for example, in addition to monofilament, multifilament, spun yarn, textured yarn generally called textured yarn, bulky yarn, stretch yarn, etc., which has been subjected to crimping or bulking processing, or yarns which are combined by twisting these together, etc.
- the cross-sectional shape may be not only circular, but also short shaped yarn such as a square or star, elliptical, hollow, etc.
- the core material may contain various additives such as fillers (inorganic fillers, organic fillers, etc.), anti-aging agents, antioxidants, UV absorbers, antistatic agents, lubricants, plasticizers, colorants (pigments, dyes, etc.), etc., as necessary.
- the surface of the core material may be subjected to known or conventional surface treatments, such as corona discharge treatment, plasma treatment, application of a primer, etc.
- the cross-sectional size of the core material is not particularly limited and can be selected appropriately depending on the purpose, but for example, if the cross-sectional shape is circular, from the viewpoint of handleability (resistance to cutting), the diameter is preferably 1 ⁇ m to 2000 ⁇ m, and more preferably 10 ⁇ m to 1000 ⁇ m.
- the thickness of the adhesive layer is not particularly limited, but from the viewpoint of adhesiveness, it is preferably, for example, 1 ⁇ m or more, and more preferably 3 ⁇ m or more. Also, from the viewpoint of drying property, it is preferably, for example, 200 ⁇ m or less, and more preferably 150 ⁇ m or less.
- the diameter of the adhesive body is not particularly limited, but for example, when the cross-sectional shape is circular, from the viewpoint of processability, it is preferably 50 ⁇ m to 1000 ⁇ m, more preferably 100 ⁇ m to 800 ⁇ m, and even more preferably 200 ⁇ m to 600 ⁇ m.
- the linear adhesive body in this embodiment is preferable because it can be attached to a narrow member or a narrow area while suppressing overflow, and can be easily disassembled (reworked).
- the linear adhesive body is also referred to as a linear adhesive body.
- the linear adhesive body in this embodiment can be suitably used for fixing an article in the manufacture of an electronic device and for fixing an in-vehicle component, and can also be applied to fixing a narrow frame of a mobile terminal such as a mobile phone or a smartphone, and fixing a battery, a motor, etc.
- the adhesive body in this embodiment is linear, it can be inserted into a narrow gap to adhere to the surface of the gap or fill the gap.
- the adhesive body in this embodiment is preferably bendable, and is particularly preferably a thread-like adhesive body that can be bent in various directions and angles like a thread.
- a bendable adhesive body particularly a thread-like adhesive body, has the advantage of being easily applicable to complex shapes such as curves, curved surfaces, and unevenness.
- a thread-like adhesive body is also referred to as a thread-like adhesive body.
- the adhesive body in this embodiment is preferably a thread-like adhesive body, i.e., a thread-like adhesive body.
- the adhesive body has bendability, particularly the filamentous adhesive body, it can be firmly applied without causing wrinkles or overlaps even when applied to a portion having a complex shape such as a curve, a curved surface, or an uneven surface.
- the filamentous adhesive body can be applied to the desired portion at once, i.e., in one process, so that it is excellent in workability and can be applied to an automated line.
- the thread-like adhesive can be used to fix cables such as electric wires and optical fibers, LED fiber lights, optical fiber sensors such as FBG (Fiber Bragg Gratings), various wires (linear members) such as threads, strings, and wires, and thin members in a desired shape.
- cables such as electric wires and optical fibers, LED fiber lights, optical fiber sensors such as FBG (Fiber Bragg Gratings), various wires (linear members) such as threads, strings, and wires, and thin members in a desired shape.
- FBG Fiber Bragg Gratings
- various wires linear members
- the thread-like adhesive can be used to firmly fix the wire or thin member with excellent workability while suppressing protrusion, wrinkles, and overlaps in accordance with the complex shape that the wire or thin member should have.
- the thread-like adhesive can be attached in advance to the surface of the other member in accordance with the shape in which the wire or thin member should be fixed, and then the wire or thin member can be attached to the adhesive attached to the surface of the other member to fix it.
- the thread-shaped adhesive may be attached to a wire or narrow member, and then the wire or narrow member may be fixed to another member in the desired configuration.
- the thread-like adhesive can also be suitably used for the purpose of temporarily fixing (temporarily fastening) an article to the surface of another article. More specifically, the thread-like adhesive is particularly suitably used for the purpose of temporarily fixing (temporarily fastening) an article when manufacturing textile products such as clothes, shoes, bags, hats, and leather products. However, the use is not limited thereto, and the thread-like adhesive can be suitably used for various purposes in which temporary fixing (temporarily fastening) is desired. For example, when fixing one article to the surface of another article, the first article is provisionally fixed to the surface of the other article using a thread-like adhesive to position it, and then the two articles are fixed (mainly fixed) by a fixing method such as thermocompression bonding or sewing.
- a fixing method such as thermocompression bonding or sewing.
- the thread-like adhesive it is easy to provisionally fix the two articles while avoiding the fixing part provided between the two articles.
- the two articles can be attached well while minimizing overflow, wrinkles, and overlaps, even if they have complex shapes such as curves, curved surfaces, or unevenness, and furthermore, they can be attached in a single process, making the process easy to work with.
- the adhesive is a thread-like adhesive, it is easy to remove the thread-like adhesive from between the two fixed (full-fixed) articles after the two articles are fixed (full-fixed) together, if necessary. In this way, the adhesive can be prevented from spilling out, and the deterioration of the design caused by the discoloration of the remaining adhesive over time can be effectively prevented.
- the adhesive is a thread-like material, it can be twisted together with threads made of other materials to create a combined thread, or woven with threads or fabrics (including nonwoven fabrics and sheets) made of other materials, allowing for the combination of functions.
- the thread-like adhesive can be used as a dam material to prevent the adhesive or pressure-sensitive adhesive from spilling out when the adhesive or pressure-sensitive adhesive is applied to the object to be bonded (adherend).
- the dam material can be used, for example, to prevent the sealing resin used in bonding optical panels from spilling out.
- the thread-like adhesive can be peeled off after the adhesive or pressure-sensitive adhesive has hardened, or it can be left in place.
- a method for producing a roll according to one embodiment of the present invention is a method for producing a roll of an adhesive body including an adhesive layer as an outermost layer, and includes a step of winding the adhesive body at a helix angle of 2° to 40°.
- the helix angle in the step is preferably 5° to 35°, more preferably 10° to 30°, and even more preferably 12° to 28°.
- the preferred aspects of the wound body and the adhesive body are as described above.
- the adhesive body may be a thread-like adhesive body.
- the process of winding the adhesive body may be performed manually or may be automated using industrial equipment, etc.
- the present specification discloses the following: ⁇ 1> A rolled body formed by cross-winding an adhesive body including an adhesive layer as an outermost layer, A wound body having a winding angle of 2° to 40°.
- a method for producing a roll of an adhesive body including an adhesive layer as an outermost layer comprising the steps of:
- the method for producing a wound body includes a step of winding the adhesive body at a winding angle of 2° to 40°.
- the manufacturing method described in ⁇ 4>, wherein the adhesive is a thread-like adhesive.
- Example 1 [Preparation of thread-like adhesive tape]
- Preparation of acrylic adhesive (coating liquid 1) 40 parts by weight of ion-exchanged water was placed in a reaction vessel equipped with a cooling tube, nitrogen inlet tube, thermometer, and stirrer, and nitrogen substitution was performed by stirring at 60°C for 1 hour or more while introducing nitrogen gas.
- 0.1 parts by weight of 2,2'-azobis[N-(2-carboxyethyl)-2-methylpropionamidine] n-hydrate (polymerization initiator) was added to this reaction vessel. While maintaining the system at 60°C, the following monomer emulsion A was gradually added dropwise over 4 hours to allow the emulsion polymerization reaction to proceed.
- monomer emulsion A 85 parts by weight of 2-ethylhexyl acrylate, 13 parts by weight of methyl acrylate, 1.25 parts by weight of acrylic acid, 0.75 parts by weight of methacrylic acid, 0.05 parts by weight of lauryl mercaptan (chain transfer agent), 0.02 parts by weight of ⁇ -methacryloxypropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., product name "KBM-503”), and 2 parts by weight of polyoxyethylene sodium lauryl sulfate (emulsifier) were added to 30 parts by weight of ion-exchanged water and emulsified.
- a multifilament yarn was prepared in which seven polyethylene terephthalate (PET) fibers (manufactured by Teijin Frontier Co., Ltd.) having a fineness of 167 dtex and a number of 48 filaments were twisted 70 times per meter.
- PET polyethylene terephthalate
- the core material was coated with the coating solution 1 by dipping using a coating roller rotating at the same speed as the unwinding speed, and then dried at 100° C. for 1 minute to obtain a thread-like adhesive body having a diameter (width in the short direction) of about 420 ⁇ m.
- the above thread-like adhesive body was wound up by 100 m at a twill angle of 22.5° onto a bobbin (paper) ball core (manufactured by Sankyo Paper Co., Ltd.) having an outer diameter of 86 mm, an inner diameter of 76 mm, and a width of 230 mm, without using a release liner, to obtain a wound body of the thread-like adhesive body.
- the obtained wound body was evaluated as follows. The results are shown in Table 1.
- ABS plate acrylonitrile-butadiene-styrene copolymer synthetic resin plate
- Example 2 A wound body of Example 2 was obtained in the same manner as in Example 1, except that the thread-like adhesive body was wound at a helix angle of 15°. The obtained wound body was evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Example 3 A wound body of Example 3 was obtained in the same manner as in Example 1, except that the thread-like adhesive body was wound at a helix angle of 7.5°. The obtained wound body was evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Example 4 A wound body of Example 4 was obtained in the same manner as in Example 1, except that the thread-like adhesive body was wound at a helix angle of 2.5°. The obtained wound body was evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Example 5 A wound body of Example 5 was obtained in the same manner as in Example 1, except that the thread-like adhesive body was wound at a helix angle of 27.5°. The obtained wound body was evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Comparative Example 1 A wound body of Comparative Example 1 was obtained in the same manner as in Example 1, except that the thread-like adhesive body was wound at a helix angle of 0.1°. The obtained wound body was evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Comparative Example 2 A wound body of Comparative Example 2 was obtained in the same manner as in Example 1, except that the thread-like adhesive body was wound at a helix angle of 42°. The obtained wound body was evaluated in the same manner as in Example 1. The results are shown in Table 1.
- the adhesive strength of the adhesive body did not decrease after unwinding, and no deterioration in appearance due to lack of glue was observed.
- the adhesive strength of the adhesive body decreased after unwinding and/or the appearance deteriorated due to lack of glue.
- the roll of the present invention can be used to store and transport the adhesive body.
- 1 winding angle
- 2 rotation direction of the wound body
- 3 width direction of the wound body
- 4 adhesive body
- 10 wound body
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
Description
[1]
粘着剤層を最外層として含む粘着体が綾巻きされてなる巻回体であって、
綾角が2°~40°である、巻回体。
[2]
前記粘着体が芯材及び粘着剤を含む、[1]に記載の巻回体。
[3]
前記粘着体が糸状粘着体である、[1]又は[2]に記載の巻回体。
粘着剤層を最外層として含む粘着体の巻回体の製造方法であって、
綾角が2°~40°となるように前記粘着体を綾巻きする工程を含む、巻回体の製造方法。
[5]
前記粘着体が糸状粘着体である、[4]に記載の製造方法。
なお、本発明は、以下に説明する実施形態に限定されるものではない。また、本明細書において「~」という表現を用いる場合は、その前後の数値又は物性値を含む表現として用いる。さらに、以下の図面において、同じ作用を奏する部材及び部位には同じ符号を付して説明することがあり、重複する説明は省略または簡略化することがある。
本実施形態の巻回体は、粘着剤層を最外層として含む粘着体が綾巻きされてなる巻回体であって、綾角が2°~40°である。綾角は、5°~35°であることが好ましく、10°~30°であることがより好ましく、12°~28°であることがさらに好ましい。
本実施形態の巻回体は、粘着剤層の表面が互いに接触した粘着体の巻回体であり、接触した粘着剤層が互いに粘着した後に界面で剥離することが可能であるため、はく離ライナーが不要である。
他方、綾角が40°を超えると、解舒後に粘着体の粘着力が低下すること及び/又は糊欠けによる外観の悪化が生じる恐れがあることに加え、巻回体の幅方向の長さを一般的な範囲を超える過大なものとする必要が生じるため、製造上の不都合が大きい。また、巻き密度が低下するため巻回体の体積が増大する恐れがある。さらに、巻取り時のトラバース制御が複雑になるため、機械的な摩耗、負荷が大きく部品を消耗させる恐れがある。
また、巻芯の寸法にも特に制限がない。巻芯の外径は、例えば、4cm以上、20cm以下とすることができる。巻芯の内径は、例えば、3cm以上、19cm以下とすることができる。巻芯の幅は、例えば、1cm以上、100cm以下とすることができる。
本実施形態における巻回体において、粘着体は最外層として粘着剤層を含む。粘着剤層は粘着剤組成物により形成される粘着剤からなる。粘着剤としては特に限定されず、公知の粘着剤を用いることが可能である。例えば、アクリル系粘着剤、ゴム系粘着剤、ビニルアルキルエーテル系粘着剤、シリコーン系粘着剤、ポリエステル系粘着剤、ポリアミド系粘着剤、ウレタン系粘着剤、フッ素系粘着剤、エポキシ系粘着剤などが挙げられる。中でも、粘着性の点から、アクリル系粘着剤、ウレタン系粘着剤、シリコーン系粘着剤、ゴム系粘着剤、又はポリエステル系粘着剤が好ましく、粘着性のコントロールが容易である点であることから、特にアクリル系粘着剤が好ましい。なお、粘着剤は、1種のみを単独で用いてもよく、2種以上を組み合わせて用いてもよい。また、本実施形態における粘着剤は、常温で粘着性を有し、粘着剤の表面と被着体の表面との接触時に生じる圧力によって、被着体をその表面に貼付できる感圧型粘着剤であることが好ましい。感圧型粘着剤であれば、加熱を要さず、熱に弱い被着体にも適用可能である。
CH2=C(R1)COOR2 (3)
(式中、R1は水素原子又はメチル基、R2は炭素数2~14のアルキル基を示す)
で表される化合物が挙げられる。
水分散型粘着剤組成物は、例えば、前記(メタ)アクリル酸アルキルエステルを主成分とし且つシラン系単量体を含む単量体混合物を慣用の乳化重合に付して、(メタ)アクリル酸エステル共重合体の水分散液を得、これに必要に応じて前記他の架橋剤を添加することにより調製できる。
粘着付与樹脂の含有量は、ベースポリマー100重量部に対して60重量部以下であることが好ましく、50重量部以下であることがより好ましく、40重量部以下であることがさらに好ましく、30重量部以下であることが特に好ましい。
本実施形態において線状粘着体を形成する方法は特に限定されないが、例えば、粘着体を構成する粘着剤組成物を用意し、はく離ライナー上にディスペンサを用いて線状に塗布して粘着体をいったん形成し、はく離ライナーを除去する方法が挙げられる。なお、粘着体が芯材及び粘着剤層を有する粘着体である場合には、芯材の表面に粘着剤組成物をディッピング、浸漬、塗布等により塗工した後に加熱乾燥させることにより、芯材の表面に粘着剤層を形成させることができる。上記粘着剤組成物の塗布は、例えば、グラビアロールコーター、リバースロールコーター、キスロールコーター、ディップロールコーター、バーコーター、ナイフコーター、スプレーコーター等の慣用のコーターを用いて行うことができる。乾燥温度は、適宜採用可能であるが、好ましくは40℃~200℃であり、さらに好ましくは50℃~180℃であり、特に好ましくは70℃~120℃である。乾燥時間は、適宜、適切な時間が採用され得る。上記乾燥時間は、好ましくは5秒~20分、さらに好ましくは5秒~10分、特に好ましくは10秒~5分である。
また、糸状の芯材の形態としては、例えば、モノフィラメントの他、マルチフィラメント、スパンヤーン、捲縮加工や嵩高加工等を施した一般的にテクスチャードヤーン、バルキーヤーン、ストレッチヤーンと称される加工糸、あるいはこれらを撚り合わせる等して組み合わせた糸が使用できる。また、断面形状も、円形だけでなく、四角形状や星型等の短形状の糸や楕円形状、中空等でありうる。
加えて、本実施形態における粘着体が線状であると、狭い隙間に入り込ませることで、隙間の表面に粘着したり、隙間を埋めたりすることができる。
例えば、曲線や曲面、凹凸などの複雑な形状の部分を有する被着体に粘着テープを貼り付けようとすると、かかる部分において粘着テープにしわや重なりが生じてしまい、はみ出しを抑えて綺麗に貼り付けることは困難であり、また、しわや重なりの生じた部分は粘着力が低下する要因ともなるおそれがある。また、しわや重なりを生じないようにしながら粘着テープを貼り付けるには、粘着テープを細かく切断しながら貼り付けることも考えられるが、作業性が大幅に悪化することとなる。一方、可曲性を有する粘着体、特に糸状粘着体であれば、曲線や曲面、凹凸などの複雑な形状の部分に貼り付ける際にも、しわや重なりを生じることなく強固に貼り付けることができる。さらに、糸状粘着体は、貼り付けたい部分に、一度に、すなわち一工程で貼り付け可能であることから、作業性にも優れ、自動化ラインにも適用可能である。
例えば、一の物品を他の物品の表面に固定する際に、該一の物品を該他の物品の表面に糸状粘着体を用いて予め仮固定させて位置決めした後に、両物品を熱圧着や縫製等の固定方法により固定(本固定)する。この場合において、糸状粘着体であれば、両物品間に設けられる固定部を避けて仮固定することが容易である。例えば、繊維製品や皮革製品を縫製する場合において、糸状粘着体により仮固定を行えば、縫製部分を避けて仮固定することが容易であり、粘着剤の針への付着を容易に防止できる。
また、糸状粘着体であれば、上述したように、両物品の形状が曲線や曲面、凹凸などの複雑な形状であっても、はみ出しやしわ、重なりを抑えながら良好に貼り付けでき、しかも一工程で貼り付け可能であり、作業性が良好である。
また、例えば、繊維製品ないし皮革製品を構成する生地、布、皮革等といった変形しやすい部材であっても、糸状粘着体による仮固定を行うことにより、引張による部材の変形が抑制ないし防止でき、固定(本固定)後の意匠性が良好となる。
さらには、糸状粘着体であれば、両物品の固定(本固定)後に、必要に応じて固定(本固定)された両物品間から糸状粘着体を抜き取り除去することも容易である。このようにすれば、粘着剤のはみ出しが防止でき、残存する粘着剤の経時的な変色に由来する意匠性の劣化を良好に防止できる。
本発明の一実施態様による巻回体の製造方法は、粘着剤層を最外層として含む粘着体の巻回体の製造方法であって、綾角が2°~40°となるように粘着体を綾巻きする工程を含む。前記工程における綾角は、好ましくは5°~35°、より好ましくは10°~30°であり、さらに好ましくは12°~28°である。
<1>
粘着剤層を最外層として含む粘着体が綾巻きされてなる巻回体であって、
綾角が2°~40°である、巻回体。
<2>
前記粘着体が芯材及び粘着剤を含む、<1>に記載の巻回体。
<3>
前記粘着体が糸状粘着体である、<1>又は<2>に記載の巻回体。
粘着剤層を最外層として含む粘着体の巻回体の製造方法であって、
綾角が2°~40°となるように前記粘着体を綾巻きする工程を含む、巻回体の製造方法。
<5>
前記粘着体が糸状粘着体である、<4>に記載の製造方法。
[糸状粘着テープの調製]
・アクリル系粘着剤(塗工液1)の調製
冷却管、窒素導入管、温度計及び攪拌機を備えた反応容器に、イオン交換水40重量部を入れ、窒素ガスを導入しながら60℃で1時間以上攪拌して窒素置換を行った。この反応容器に、2,2’-アゾビス[N-(2-カルボキシエチル)-2-メチルプロピオンアミジン]n水和物(重合開始剤)0.1重量部を加えた。系を60℃に保ちつつ、ここに下記のモノマーエマルションAを4時間かけて徐々に滴下して乳化重合反応を進行させた。
上記アクリル系重合体エマルションに含まれるアクリル系重合体100重量部当たり、粘着付与樹脂が32重量部となるように粘着付与樹脂エマルション(荒川化学工業株式会社製、商品名「E-865NT」)を加えた。さらに、イオン交換水を加えて固形分濃度を50重量%に調整して、塗工液1を得た。
芯材として、繊度:167dtex、フィラメント数:48本のポリエチレンテレフタレート(PET)繊維(帝人フロンティア株式会社製)7本に、1m当たり70回の撚りをかけたマルチフィラメント糸を用意した。
塗工液1を上記芯材に、繰り出し速度と同じ速度で回転している塗工ローラーを用いてディッピングを行って塗工した。その後、100℃で1分間乾燥して、直径(短手方向の幅)が約420μmの糸状粘着体を得た。
得られた巻回体について、下記のとおり評価した。結果を表1に示す。
得られた巻回体から、糸状粘着体を解舒し、アクリロニトリル-ブタジエン-スチレン共重合合成樹脂板(ABS板)(コウベポリシート ABS板、昭和電工マテリアルズ株式会社製、3.0cm×4.0cm×2.0mm)上に、外周の直径25mm、5周、ピッチ間距離1.5mmの渦巻き状の円形を描くように粘着体を貼付した。その上にさらに同じABS板を配置し、プレス機(サーボプレス、日立化成株式会社製)により0.35MPaの荷重で10秒間圧着することにより、粘着力評価用の接合体を得た。
得られた粘着力評価用の接合体のへき開剥離力を、引張試験機(AG-X/R、株式会社島津製作所製)にて測定した。測定は、23℃にて引張速度300mm/minで実施した。得られた測定値を単位面積あたりに換算し、プルオフ試験力(N/mm2)とした。
巻回体より解舒された糸状粘着剤の外観欠点をマイクロスコープ(マイクロスコープ(VHX-7000)、株式会社キーエンス製)にて50倍の拡大倍率で観察し、糊欠け部が2個以下/1cmのものを「良」とし、3個/1cm以上のものを「不良」とした。
糸状粘着体を綾角15°で巻き取った以外は実施例1と同様の方法により、実施例2の巻回体を得た。
得られた巻回体について、実施例1と同様の評価を行った。結果を表1に示す。
糸状粘着体を綾角7.5°で巻き取った以外は実施例1と同様の方法により、実施例3の巻回体を得た。
得られた巻回体について、実施例1と同様の評価を行った。結果を表1に示す。
糸状粘着体を綾角2.5°で巻き取った以外は実施例1と同様の方法により、実施例4の巻回体を得た。
得られた巻回体について、実施例1と同様の評価を行った。結果を表1に示す。
糸状粘着体を綾角27.5°で巻き取った以外は実施例1と同様の方法により、実施例5の巻回体を得た。
得られた巻回体について、実施例1と同様の評価を行った。結果を表1に示す。
糸状粘着体を綾角0.1°で巻き取った以外は実施例1と同様の方法により、比較例1の巻回体を得た。
得られた巻回体について、実施例1と同様の評価を行った。結果を表1に示す。
糸状粘着体を綾角42°で巻き取った以外は実施例1と同様の方法により、比較例2の巻回体を得た。
得られた巻回体について、実施例1と同様の評価を行った。結果を表1に示す。
2 巻回体の回転方向
3 巻回体の幅方向
4 粘着体
10 巻回体
Claims (5)
- 粘着剤層を最外層として含む粘着体が綾巻きされてなる巻回体であって、
綾角が2°~40°である、巻回体。 - 前記粘着体が芯材及び粘着剤を含む、請求項1に記載の巻回体。
- 前記粘着体が糸状粘着体である、請求項1又は2に記載の巻回体。
- 粘着剤層を最外層として含む粘着体の巻回体の製造方法であって、
綾角が2°~40°となるように前記粘着体を綾巻きする工程を含む、巻回体の製造方法。 - 前記粘着体が糸状粘着体である、請求項4に記載の製造方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020257015251A KR20250103643A (ko) | 2022-11-11 | 2023-11-09 | 점착체의 권회체 및 그 제조 방법 |
| JP2024557851A JPWO2024101426A1 (ja) | 2022-11-11 | 2023-11-09 | |
| EP23888771.5A EP4617338A1 (en) | 2022-11-11 | 2023-11-09 | Wound body of adhesive body and method for producing same |
| CN202380078248.7A CN120187813A (zh) | 2022-11-11 | 2023-11-09 | 粘合体的卷绕体及其制造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-181326 | 2022-11-11 | ||
| JP2022181326 | 2022-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024101426A1 true WO2024101426A1 (ja) | 2024-05-16 |
Family
ID=91032522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/040421 Ceased WO2024101426A1 (ja) | 2022-11-11 | 2023-11-09 | 粘着体の巻回体及びその製造方法 |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4617338A1 (ja) |
| JP (1) | JPWO2024101426A1 (ja) |
| KR (1) | KR20250103643A (ja) |
| CN (1) | CN120187813A (ja) |
| TW (1) | TW202426588A (ja) |
| WO (1) | WO2024101426A1 (ja) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03231980A (ja) | 1990-02-07 | 1991-10-15 | Ishizaki Shizai Kk | 糸状接着具及びその製造方法 |
| JP2015007183A (ja) * | 2013-06-25 | 2015-01-15 | 日立化成株式会社 | 接着剤テープの巻回体 |
| US20150132523A1 (en) * | 2013-11-14 | 2015-05-14 | Rayven, Inc. | Traverse wound double-sided pressure sensitive adhesive tape |
| WO2020071508A1 (ja) * | 2018-10-05 | 2020-04-09 | 日東電工株式会社 | 粘着性物品 |
| JP2021161403A (ja) | 2020-03-31 | 2021-10-11 | 日東電工株式会社 | セパレーター付き粘着体 |
| JP2022181326A (ja) | 2021-05-26 | 2022-12-08 | セイコーエプソン株式会社 | 排液収容体、記録装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003231980A (ja) | 2002-02-12 | 2003-08-19 | Kurita Water Ind Ltd | ボイラ用の防食剤 |
-
2023
- 2023-11-09 JP JP2024557851A patent/JPWO2024101426A1/ja active Pending
- 2023-11-09 WO PCT/JP2023/040421 patent/WO2024101426A1/ja not_active Ceased
- 2023-11-09 EP EP23888771.5A patent/EP4617338A1/en active Pending
- 2023-11-09 KR KR1020257015251A patent/KR20250103643A/ko active Pending
- 2023-11-09 CN CN202380078248.7A patent/CN120187813A/zh active Pending
- 2023-11-10 TW TW112143433A patent/TW202426588A/zh unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03231980A (ja) | 1990-02-07 | 1991-10-15 | Ishizaki Shizai Kk | 糸状接着具及びその製造方法 |
| JP2015007183A (ja) * | 2013-06-25 | 2015-01-15 | 日立化成株式会社 | 接着剤テープの巻回体 |
| US20150132523A1 (en) * | 2013-11-14 | 2015-05-14 | Rayven, Inc. | Traverse wound double-sided pressure sensitive adhesive tape |
| WO2020071508A1 (ja) * | 2018-10-05 | 2020-04-09 | 日東電工株式会社 | 粘着性物品 |
| JP2021161403A (ja) | 2020-03-31 | 2021-10-11 | 日東電工株式会社 | セパレーター付き粘着体 |
| JP2022181326A (ja) | 2021-05-26 | 2022-12-08 | セイコーエプソン株式会社 | 排液収容体、記録装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4617338A1 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2024101426A1 (ja) | 2024-05-16 |
| CN120187813A (zh) | 2025-06-20 |
| TW202426588A (zh) | 2024-07-01 |
| KR20250103643A (ko) | 2025-07-07 |
| EP4617338A1 (en) | 2025-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7534487B2 (ja) | 線状粘着体 | |
| JP7776253B2 (ja) | 粘着性物品 | |
| JP2024116320A (ja) | 粘着性物品 | |
| JP2022167925A (ja) | 複合体 | |
| TW201920553A (zh) | 黏著性物品 | |
| WO2024101426A1 (ja) | 粘着体の巻回体及びその製造方法 | |
| WO2024204362A1 (ja) | 糸状粘着体 | |
| WO2024101423A1 (ja) | 包装物品及びその製造方法 | |
| WO2024101424A1 (ja) | 粘着体 | |
| WO2024101422A1 (ja) | 糸状粘着体 | |
| JP7640242B2 (ja) | 糸状粘着体 | |
| WO2025143264A1 (ja) | 糸状粘着体 | |
| KR20220156846A (ko) | 세퍼레이터를 갖는 점착체 | |
| WO2024101425A1 (ja) | 糸状粘着体 | |
| WO2025205569A1 (ja) | 糸状粘着体 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23888771 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024557851 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380078248.7 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023888771 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023888771 Country of ref document: EP Effective date: 20250611 |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380078248.7 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 1020257015251 Country of ref document: KR |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023888771 Country of ref document: EP |
