WO2016194555A1 - 低吸着性包装袋 - Google Patents
低吸着性包装袋 Download PDFInfo
- Publication number
- WO2016194555A1 WO2016194555A1 PCT/JP2016/063853 JP2016063853W WO2016194555A1 WO 2016194555 A1 WO2016194555 A1 WO 2016194555A1 JP 2016063853 W JP2016063853 W JP 2016063853W WO 2016194555 A1 WO2016194555 A1 WO 2016194555A1
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- WO
- WIPO (PCT)
- Prior art keywords
- low
- packaging bag
- cyclic olefin
- resin
- sealant layer
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/325—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polycycloolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/58—Cuttability
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/40—Closed containers
- B32B2439/46—Bags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/80—Medical packaging
Definitions
- the present invention relates to a low adsorptive packaging bag in which the sealant layer on the content surface side is excellent in low adsorptivity (non-adsorbability) of volatile low-molecular compounds derived from contents such as pharmaceuticals, foods, and cosmetics.
- the cyclic olefin-based resin is a resin having a cyclic olefin skeleton in the main chain, and has many characteristics such as high transparency, high heat distortion temperature, low birefringence, and hydrolysis resistance. For this reason, cyclic olefin resins are used in a wide variety of fields where these characteristics are required.
- Patent Document 1 discloses a packaging film in which a layer containing a cyclic olefin-based resin having a Tg of 30 ° C. to 55 ° C. is used as a packaging film. According to the film, heat sealing at a very low temperature is possible.
- EVOH ethylene-vinyl alcohol copolymer
- PAN polyacrylonitrile
- PET-G diimethanol-polyethylene terephthalate
- EVOH, PAN, PET-G, etc. which are conventional low adsorptive sealants, are excellent in low adsorptivity, but have other physical properties as packaging materials, such as easy-cut property and water vapor barrier property.
- the heat sealability was not satisfactory.
- a low adsorptive packaging bag provided with a sealant film (sealant layer) that satisfies all of heat sealability, low adsorptivity, easy cutting properties, and water vapor barrier properties has been demanded.
- the present invention has been made to solve the above-described problems, and the object thereof is to provide a sealant film (sealant layer) that satisfies all of heat sealability, low adsorptivity, easy cut property, and water vapor barrier property. It is to provide a low-adsorption packaging bag.
- the present inventor has conducted extensive research to solve the above problems. As a result, it has been found that the above problem can be solved by using a laminate using a sealant layer containing a cyclic olefin resin having a glass transition point of 50 ° C. or higher and 190 ° C. or lower as a low-adsorption packaging bag. It came to complete. More specifically, the present invention provides the following.
- the low adsorption packaging bag by which the laminated body provided with the sealant layer containing the following cyclic olefin resin is formed by the heat seal by making the said sealant layer side into an inner surface.
- a low adsorptive packaging bag including a sealant film (sealant layer) that satisfies all of heat sealability, low adsorptivity, easy cut property, and water vapor barrier property.
- the low adsorptive packaging bag of the present invention is a packaging bag for containing contents containing a volatile low molecular compound having a molecular weight of 800 or less, and the low adsorptive packaging bag includes a base material layer, a sealant, and a sealant.
- the sealant layer includes a cyclic olefin-based resin having a glass transition point of 50 ° C. or higher and 190 ° C. or lower.
- a laminate including a base material layer and a sealant layer includes, for example, polyethylene terephthalate as a base material layer, a polyethylene terephthalate and sealant layer as a laminate, and a metal layer such as aluminum between the polyethylene terephthalate and sealant layer.
- the laminated body etc. can be illustrated.
- the sealant layer disposed inside the low adsorptive packaging bag of the present invention is a layer having a low adsorptivity for a volatile molecular compound having a molecular weight of 800 or less, preferably 500 or less.
- the content packaged in the low-adsorption packaging bag of the present invention is not particularly limited as long as the content contains a volatile low-molecular compound having a molecular weight of 800 or less.
- pharmaceuticals and foods having a volatile low-molecular compound It can be particularly suitably used as a packaging bag for cosmetics and the like.
- the volatile low molecular weight compound include dl-camphor, 1-menthol, methyl salicylate, tulobuterol, nicotine, bromhexine hydrochloride and the like.
- the sealant layer in this invention is a layer arrange
- the cyclic olefin-based resin contained in the sealant layer in the present invention is a cyclic olefin-based resin having a temperature of 50 ° C. or higher and 190 ° C. or lower, and a copolymer containing a cyclic olefin homopolymer or a cyclic olefin component as a copolymer component. Yes, it is a polyolefin resin containing a cyclic olefin component in the main chain.
- the sealant layer in the present invention has a low adsorptivity to a volatile low molecular compound having a molecular weight of 800 or less. At the same time, it has high heat sealability, easy cutting properties, and water vapor barrier properties.
- the sealant layer can be melt-extruded by a conventionally known inflation method or T-die method, and the thickness of the sealant layer is preferably 5 ⁇ m to 100 ⁇ m, and more preferably 10 ⁇ m to 50 ⁇ m.
- the cyclic polyolefin resin contained in the sealant layer is not particularly limited as long as it is a cyclic olefin resin having a cyclic olefin component of 50 ° C. or higher and 190 ° C. or lower.
- a cyclic olefin resin having a cyclic olefin component of 50 ° C. or higher and 190 ° C. or lower.
- an addition polymer of a cyclic olefin or a hydrogenated product thereof, an addition copolymer of a cyclic olefin and an ⁇ -olefin, or a hydrogenated product thereof can be used.
- a cyclic olefin resin can be used individually by 1 type, or can also use 2 or more types together.
- the laminate is provided with a sealant layer containing a cyclic olefin resin having a glass transition point of 50 ° C or higher and 190 ° C or lower. It can be made a packaging bag.
- a sealant layer containing a cyclic olefin resin having a glass transition point of 50 ° C or higher and 190 ° C or lower.
- cyclic olefin resin examples include those obtained by grafting and / or copolymerizing an unsaturated compound further having a polar group in the polymer or copolymer having a structural unit derived from a cyclic olefin in the main chain.
- Examples of the polar group include a carboxyl group, an acid anhydride group, an epoxy group, an amide group, an ester group, and a hydroxyl group.
- Examples of the unsaturated compound having a polar group include (meth) acrylic acid and maleic acid. Acid, maleic anhydride, itaconic anhydride, glycidyl (meth) acrylate, alkyl (meth) acrylate (carbon number 1-10) ester, alkyl maleate (carbon number 1-10) ester, (meth) acrylamide, (meta And 2-hydroxyethyl acrylate.
- cyclic olefin-based resins examples include TOPAS (registered trademark) (manufactured by TOPAS Advanced Polymers), Apel (registered trademark) (manufactured by Mitsui Chemicals), Zeonex (registered trademark) (manufactured by Nippon Zeon), Examples include ZEONOR (registered trademark) (manufactured by ZEON Corporation), ARTON (registered trademark) (manufactured by JSR Corporation), and the like.
- TOPAS registered trademark
- Apel registered trademark
- Zeonex registered trademark
- ZEONOR registered trademark
- ARTON registered trademark
- Particularly preferred examples of the addition copolymer of cyclic olefin and ⁇ -olefin include [1] a structural unit derived from an ⁇ -olefin having 2 to 20 carbon atoms, and [2] represented by the following general formula (b). And a copolymer containing a structural unit derived from a cyclic olefin.
- R 1 to R 12 may be the same or different and are each selected from the group consisting of a hydrogen atom, a halogen atom, and a hydrocarbon group; R 9 and R 10 , R 11 and R 12 may be integrated to form a divalent hydrocarbon group, R 9 or R 10 and R 11 or R 12 may form a ring with each other.
- N represents 0 or a positive integer; When n is 2 or more, R 5 to R 8 may be the same or different in each repeating unit.
- ⁇ -olefin having 2 to 20 carbon atoms The ⁇ -olefin having 2 to 20 carbon atoms is not particularly limited. For example, the same ones as in JP2007-302722 can be mentioned. These ⁇ -olefins may be used alone or in combination of two or more. Of these, ethylene is most preferably used alone.
- R 1 to R 12 in the general formula (b) may be the same or different and are selected from the group consisting of a hydrogen atom, a halogen atom, and a hydrocarbon group.
- Specific examples of the cyclic olefin represented by the general formula (b) include those similar to those described in JP-A-2007-302722.
- cyclic olefins may be used singly or in combination of two or more.
- bicyclo [2.2.1] hept-2-ene (common name: norbornene) is preferably used alone.
- the polymerization method of the ⁇ -olefin having 2 to 20 carbon atoms and the cyclic olefin represented by [2] the general formula (b) and the hydrogenation method of the obtained polymer are not particularly limited. Can be carried out according to a known method.
- the polymerization catalyst used is not particularly limited, and a cyclic olefin resin can be obtained by a known method using a conventionally known catalyst such as a Ziegler-Natta, metathesis, or metallocene catalyst.
- a method for hydrogenating the obtained cyclic olefin resin is not particularly limited, and a conventionally known method can be applied.
- the cyclic olefin-based resin is not limited to the above [1] ⁇ -olefin component having 2 to 20 carbon atoms and [2] the cyclic olefin component represented by the general formula (b).
- other copolymerizable unsaturated monomer components may be contained.
- the unsaturated monomer that may be optionally copolymerized is not particularly limited, and examples thereof include hydrocarbon monomers containing two or more carbon-carbon double bonds in one molecule. Can be mentioned. Specific examples of the hydrocarbon monomer having two or more carbon-carbon double bonds in one molecule include those similar to those described in JP-A-2007-302722.
- an addition copolymer of ethylene and norbornene has particularly heat sealability, low adsorptivity, easy cut property, and water vapor barrier property, and is particularly suitable as a low adsorptive packaging bag. Therefore, the cyclic olefin resin in the present invention is particularly preferably an addition copolymer of ethylene and norbornene.
- the glass transition point of the cyclic olefin-based resin is 50 ° C. or higher and 190 ° C. or lower, preferably 60 ° C. or higher and 150 ° C. or lower, and more preferably 60 ° C. or higher and 100 ° C. or lower. If the glass transition point of the cyclic olefin-based resin is less than 50 ° C., it is not preferable in terms of heat resistance. When the glass transition point of the cyclic olefin-based resin is higher than 190 ° C., it is not preferable in terms of heat sealability.
- Tg glass transition point of the cyclic olefin-based resin
- a value measured by a DSC method (method described in JIS K7121) under a temperature increase rate of 10 ° C./min is employed.
- the cyclic olefin-based resin is preferably a method based on ISO 1133, and the MVR measured under conditions of 260 ° C. and a load of 2.16 kg is preferably 1 ml / 10 min or more and 100 ml / 10 min or less. If the MVR of the cyclic olefin resin is less than 1 ml / 10 min, the fluidity may be impaired. On the other hand, if the MVR of the cyclic olefin resin is higher than 100 ml / 10 min, the mechanical strength of the cyclic olefin resin itself is lowered, which may be unsuitable for low-adsorbent packaging bag applications.
- the lower limit value of the content of the cyclic olefin-based resin is not particularly limited, but is preferably 95% by mass or more, more preferably 98% by mass or more in the total composition of the sealant layer.
- the upper limit of the content of the cyclic olefin resin is not particularly limited, but is preferably 100% by mass or less in the entire composition of the sealant layer.
- the base material layer in this invention is a layer with which a laminated body is provided, and is a layer mainly arrange
- the base material layer in the present invention is not particularly limited.
- a base material layer is preferably a biaxially stretched polyethylene terephthalate film.
- the base material layer may be composed of a plurality of layers as well as a single layer.
- a metal foil such as aluminum, a metal vapor deposition layer or a metal oxide vapor deposition layer may be provided on at least one layer of the base material layer.
- the thickness of the base material layer is not particularly limited, but is preferably 5 ⁇ m or more and 50 ⁇ m or less, for example, and more preferably 10 ⁇ m or more and 40 ⁇ m or less.
- the manufacturing method of the low adsorptive packaging bag of this invention is not specifically limited.
- the laminate is formed by a known laminating method such as an extrusion coating method, a hot lamination method, or a dry lamination method. And it can manufacture by preparing the sheet
- a laminated body provided with a base material layer and a sealant layer is manufactured.
- the laminate may include other layers such as a vapor deposition layer as a base material layer.
- a conventionally well-known thing can be applied to another layer in the range which does not impair the effect of this invention.
- Each layer of the laminate in the present invention may be bonded via an adhesive layer.
- the adhesive for forming the adhesive layer for example, one liquid or two liquid curable urethane adhesive can be used.
- a low-adsorption packaging bag is manufactured using the laminate.
- a heat seal device such as an extension seal part, a low-adsorbent packaging bag can be easily produced.
- Volatile low molecular weight compound adsorption test 1 The adsorption amount of the volatile low-molecular compound was measured for each resin sheet. Specifically, a commercially available poultice (dl-camphor (molecular weight: 152 as a volatile substance) on both surfaces of each resin sheet (50 mm ⁇ 70 mm, thickness 50 ⁇ m) shown in Table 1 serving as a sealant layer of the present invention. ), 1-menthol (molecular weight: 156), methyl salicylate (containing molecular weight: 152), and left for 16 hours, then absorbed into the resin sheet (dl-camphor, 1-menthol, methyl salicylate) ) was measured by the headspace GC method. The results are shown in Table 1.
- COC was a copolymer of ethylene and norbornene (made by TOPAS Advanced Polymers, trade name “ “TOPAS 8007F-04”, a glass transition point of 78 ° C.) means a resin sheet
- PP means a resin sheet made of polypropylene (Novatech FX4E manufactured by Nippon Polypro Co., Ltd.)
- HDPE means high-density polyethylene ( It means a resin sheet formed from Nippon Polyethylene Co., Ltd., trade name “Novatech HD HJ580N”, melting point 134 ° C.)
- LDPE means a resin sheet formed from low density polyethylene (Novatec LC522 manufactured by Nippon Polyethylene).
- the resin sheet of cyclic olefin COC (copolymer of ethylene and norbornene) is dl ⁇ in comparison with the resin sheet of PP (polypropylene), HDPE (high density polyethylene) and LDPE (low density polyethylene). It can be seen that the absorption amount of camphor, 1-menthol and methyl salicylate is very small, which is equivalent to the absorption amount of the PAN resin sheet.
- the low-adsorption packaging bag of the present invention in which a laminate having a sealant layer containing a cyclic olefin resin is used as a packaging bag has a small amount of absorption of volatile low-molecular compounds, and volatile low-molecular compounds. It turns out that it is excellent as a low adsorptive packaging bag for the contents which have.
- Volatile low-molecular-weight compound adsorption test 2 gas phase adsorption
- the adsorption amount of the volatile low-molecular compound was measured for each resin sheet. Specifically, a volatile substance (Turobuterol molecular weight: 228, Wako Pure Chemical Industries, Ltd. Tulobuterol (isomer mixture) for pharmacological research) and each resin sheet (50 mm ⁇ 50 mm, thickness 30 ⁇ m) in Table 2 ) was sealed and allowed to stand for 2 weeks, and then the amount of volatile substance (tulobuterol) absorbed in the resin sheet was measured by the headspace GC method. The results are shown in Table 2.
- COC TOPAS 8007F-04
- TOPAS Advanced Polymers a copolymer of ethylene and norbornene
- the COC (ethylene and norbornene copolymer) resin sheet which is a cyclic olefin
- PAN polyacrylonitrile
- LLDPE linear low density polyethylene
- COC was a copolymer of ethylene and norbornene (made by TOPAS Advanced Polymers, trade name “ “TOPAS 8007F-04”, glass transition point 78 ° C.), and EVOH means a resin sheet formed from an ethylene / vinyl alcohol copolymer resin (Eval F made by Kuraray).
- G represents a resin sheet formed from dimethanol-polyethylene terephthalate (EASTMAN GN001 manufactured by EASTMAN).
- the laminate using COC copolymer of ethylene and norbornene
- the low adsorptive packaging bag of this invention is excellent as an easy-cut property, and is excellent as a packaging bag for accommodating the content containing a volatile low molecular compound.
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- Laminated Bodies (AREA)
Abstract
Description
本発明の低吸着性包装袋は、分子量800以下の揮発性の低分子化合物を含有する内容物を収容するための包装袋であって、当該低吸着性包装袋は、基材層と、シーラント層とを備える積層体であり、当該シーラント層は、ガラス転移点が50℃以上190℃以下の環状オレフィン系樹脂を含む。
本発明におけるシーラント層とは、低吸着性包装袋の内側に配置される層である。本発明におけるシーラント層に含まれる環状オレフィン系樹脂は、50℃以上190℃以下の環状オレフィン系樹脂であって、環状オレフィンの単独重合体又は環状オレフィン成分を共重合成分として含有する共重合体であり、環状オレフィン成分を主鎖に含有するポリオレフィン系樹脂である。本発明におけるシーラント層は、分子量800以下の揮発性の低分子化合物に対する吸着性が低い。また、同時にヒートシール性、易カット性、水蒸気バリア性が高い。シーラント層は従来公知のインフレーション法やTダイ法により溶融押出し成形でき、シーラント層の厚さは5μm以上100μm以下が好ましく、10μm以上50μm以下がより好ましい。
環状オレフィン系樹脂としては、環状オレフィンに由来する構造単位を主鎖に含む上記重合体又は上記共重合体において、さらに極性基を有する不飽和化合物がグラフト及び/又は共重合したものも挙げられる。
R9とR10、R11とR12は、一体化して2価の炭化水素基を形成してもよく、
R9又はR10と、R11又はR12とは、互いに環を形成していてもよい。
また、nは、0又は正の整数を示し、
nが2以上の場合には、R5~R8は、それぞれの繰り返し単位のなかで、それぞれ同一でも異なっていてもよい。)
炭素数2~20のα-オレフィンは、特に限定されるものではない。例えば、特開2007-302722と同様のものを挙げることができる。また、これらのα-オレフィンは、1種単独でも2種以上を同時に使用してもよい。これらのなかでは、エチレンの単独使用が最も好ましい。
一般式(b)で示される環状オレフィンについて説明する。一般式(b)におけるR1~R12は、それぞれ同一でも異なっていてもよく、水素原子、ハロゲン原子、及び、炭化水素基からなる群より選ばれるものである。一般式(b)で示される環状オレフィンの具体例としては、特開2007-302722と同様のものを挙げることができる。
本発明におけるシーラント層には環状オレフィン系樹脂以外の成分を配合してもよい。このような他の成分としては、その他の種類の熱可塑性樹脂や、安定剤、強化剤、可塑剤、顔料等の添加剤が例示される。
本発明における基材層は、積層体に備えられる層であり、主に低吸着性包装袋の内側以外に配置される層である。本発明における基材層は、特に限定されるものではなく、例えば基材層の少なくとも1層が、ポリエチレンテレフタレート樹脂、ナイロン樹脂、ポリプロピレン樹脂、ポリエチレン樹脂等の樹脂フィルムにより構成される基材層を挙げることができる。耐久性及び汎用性の観点から、基材層の少なくとも1層が、2軸延伸ポリエチレンテレフタレートフィルムであることが好ましい。また、基材層は単層のみならず複数の層によって構成されていてもよい。
本発明の低吸着性包装袋の製造方法は特に限定されない。例えば、押出しコーティング法、ホットラミネーション法、ドライラミネーション法等の公知ラミネート方法により積層体を形成する。そして、当該積層体のシートを2枚用意し、当該積層体のシートのシーラント層が向かい合うように重ね、ヒートシールすることで製造することができる。
各樹脂シートについて揮発性の低分子化合物の吸着量を測定した。具体的には、本発明のシーラント層としてなる、表1に記載の各樹脂シート(50mm×70mm、厚さ50μm)の両面に市販の湿布薬(揮発性物質として、dl-カンフル(分子量:152)、1-メントール(分子量:156)、サリチル酸メチル(分子量:152)を含有)に貼付し、16時間放置後、樹脂シートに吸収された揮発性物質(dl-カンフル、1-メントール、サリチル酸メチル)の量をヘッドスペースGC法により測定した。結果を表1に示す。
各樹脂シートについて揮発性の低分子化合物の吸着量を測定した。具体的には、デジケータ内に揮発性物質(ツロブテロール 分子量:228、和光純薬(株) ツロブテロール(異性体混合物) 薬理研究用)及び表2に記載の各樹脂シート(50mm×50mm、厚さ30μm)を入れ密閉し、2週間放置後、樹脂シートに吸収された揮発性物質(ツロブテロール)の量をヘッドスペースGC法により測定した。結果を表2に示す。
表3に記載のインフレーションフィルム(厚み100μm)と、ポリエチレンテレフタレートとをドライラミネーションで一体化し積層体を製造し、積層体について易カット性試験を行った。具体的には手で積層体を容易にカットできるか以下の評価基準の下評価を行った。評価結果を表3に示す。
○:容易にカットできる
△:カットか可能であるが、少々困難である
×:カットが不可能、又はカットが極めて困難である
Claims (7)
- 分子量800以下の揮発性の低分子化合物を含有する内容物を収容するための包装袋であって、
一又は複数の層からなる基材層と、ガラス転移点が50℃以上190℃以下の環状オレフィン系樹脂を含むシーラント層と、を備える積層体が、前記シーラント層側を内面としてヒートシールによって形成されている低吸着性包装袋。 - 前記ガラス転移点が60℃以上150℃以下である、請求項1に記載の低吸着性包装袋。
- 前記ガラス転移点が60℃以上100℃以下である、請求項1又は2に記載の低吸着性包装袋。
- 前記内容物が、食品、医薬品、化粧品より選択される一つ以上である、請求項1から3のいずれかに記載の低吸着性包装袋。
- 前記環状オレフィン系樹脂は、エチレンとノルボルネンとの共重合体である、請求項1から4のいずれかに記載の低吸着性包装袋。
- 前記基材層の少なくとも1層が、2軸延伸ポリエチレンテレフタレートフィルムである、請求項1から5のいずれかに記載の低吸着性包装袋。
- 前記基材層の少なくとも1層が、金属箔、金属蒸着層、金属酸化物蒸着層である、請求項1から6のいずれかに記載の低吸着性包装袋。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201680031581.2A CN107614393B (zh) | 2015-06-03 | 2016-05-10 | 低吸附性包装袋 |
| US15/570,001 US20180154619A1 (en) | 2015-06-03 | 2016-05-10 | Low-adsorptivity packaging bag |
| EP16802992.4A EP3305683A4 (en) | 2015-06-03 | 2016-05-10 | Low-absorption packaging bag |
| KR1020177034852A KR101857551B1 (ko) | 2015-06-03 | 2016-05-10 | 저흡착성 포장백 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015113259A JP6085639B2 (ja) | 2015-06-03 | 2015-06-03 | 低吸着性包装袋 |
| JP2015-113259 | 2015-06-03 |
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| Publication Number | Publication Date |
|---|---|
| WO2016194555A1 true WO2016194555A1 (ja) | 2016-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2016/063853 Ceased WO2016194555A1 (ja) | 2015-06-03 | 2016-05-10 | 低吸着性包装袋 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20180154619A1 (ja) |
| EP (1) | EP3305683A4 (ja) |
| JP (1) | JP6085639B2 (ja) |
| KR (1) | KR101857551B1 (ja) |
| CN (1) | CN107614393B (ja) |
| WO (1) | WO2016194555A1 (ja) |
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| WO2018164230A1 (ja) * | 2017-03-10 | 2018-09-13 | 凸版印刷株式会社 | 積層体、包装体及び包装物品 |
| WO2019065835A1 (ja) * | 2017-09-28 | 2019-04-04 | 東洋アルミニウム株式会社 | 包装材及びこれを用いた包装袋 |
| US11260624B2 (en) | 2015-12-29 | 2022-03-01 | Danapak Flexibles A/S | Method for providing an extreme chemical resistant film, a film and laminate obtainable therefrom |
| US11325350B2 (en) | 2018-08-08 | 2022-05-10 | Danapak Flexibles A/S | Films and laminates for use in packaging reactive compounds |
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| DK178929B9 (en) | 2015-12-15 | 2017-06-26 | Radiometer Medical Aps | A Bag Containing a Reference Fluid |
| JP7107028B2 (ja) * | 2018-06-29 | 2022-07-27 | 凸版印刷株式会社 | 積層体、包装体及び包装物品 |
| JP2020045106A (ja) * | 2018-09-14 | 2020-03-26 | 藤森工業株式会社 | チャック袋 |
| TWI855169B (zh) | 2019-09-30 | 2024-09-11 | 日商日絆股份有限公司 | 包裝材 |
| JP2021079640A (ja) * | 2019-11-20 | 2021-05-27 | 凸版印刷株式会社 | 積層フィルム、および、包装袋 |
| CN111516335B (zh) * | 2020-04-22 | 2022-02-15 | 江阴宝柏包装有限公司 | 一种耐溶剂性强低析出可高温蒸煮包装膜 |
| KR102348563B1 (ko) * | 2020-05-21 | 2022-01-07 | 율촌화학 주식회사 | 식품용 포장 필름 및 이를 포함하는 식품용 포장백 |
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| WO2019065835A1 (ja) * | 2017-09-28 | 2019-04-04 | 東洋アルミニウム株式会社 | 包装材及びこれを用いた包装袋 |
| JP2019064602A (ja) * | 2017-09-28 | 2019-04-25 | 東洋アルミニウム株式会社 | 包装材及びこれを用いた包装袋 |
| CN111148702A (zh) * | 2017-09-28 | 2020-05-12 | 东洋铝株式会社 | 包装材料及使用了该包装材料的包装袋 |
| US11325350B2 (en) | 2018-08-08 | 2022-05-10 | Danapak Flexibles A/S | Films and laminates for use in packaging reactive compounds |
| US12285925B2 (en) | 2018-08-08 | 2025-04-29 | Adapa Flexibles Denmark Slagelse A/S | Films and laminates for use in packaging reactive compounds |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101857551B1 (ko) | 2018-05-14 |
| JP2016222332A (ja) | 2016-12-28 |
| EP3305683A4 (en) | 2018-07-25 |
| JP6085639B2 (ja) | 2017-02-22 |
| CN107614393B (zh) | 2018-11-13 |
| CN107614393A (zh) | 2018-01-19 |
| KR20170138577A (ko) | 2017-12-15 |
| US20180154619A1 (en) | 2018-06-07 |
| EP3305683A1 (en) | 2018-04-11 |
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