JPH0431436Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a sliding door in which a rim is attached around the sliding door body with a core made of cardboard or styrofoam board. and relates to a sliding door whose sliding door can be easily replaced.

[Prior Art] A fusuma whose main body is made of a styrofoam or cardboard core is known as a fusuma with excellent heat insulation properties. Compared to traditional Japanese-style fusuma, fusuma that uses this kind of fusuma are stronger, lighter, and much cheaper, and those that use styrofoam as a core material have the great advantage of exhibiting good heat insulation properties. have. In this type of sliding door, for example, as shown in Fig. 3, the concave groove 3 of the edge body 4 and the edge of the sliding door main body 2 are fitted together, and the entire surface of the fitting is bonded to each other with glue. Ta. However, this bran
Since the edge of the sliding door body 2 is glued to the entire inner surface of the bottom and both sides of the concave groove 3, when removing the edge body 4 to replace the sliding sheet paper or replacing the sliding door body 2, The polystyrene foam layer or cardboard layer that forms the core of the fusuma 2 may be damaged, making it difficult to replace the fusuma paper, and in some cases, the entire fusuma body 2 may have to be replaced, or the edges may be damaged. There was a problem in that it took time and effort to remove the remaining deposits in the groove 3 of the body 4.

As a way to improve this point,
As shown in FIG. 4 in Publication No. 10040, the edge body 4 is provided with a first groove into which the edge of the sliding door body 2 is fitted, and the bottom of the first groove is slightly extended on both sides of the bottom. A second concave groove is provided except for the first groove.
A sliding door is disclosed in which the edges of the sliding door main body 2 fitted into the groove are adhered to both sides of the first groove and the bottom surface of the remaining first groove.

[Problems to be solved by the invention] However, the sliding door disclosed in the above-mentioned Japanese Utility Model Application Publication No. 54-10040 requires a lot of processing work to provide two grooves on the edge 4, and When the sliding door main body 2 is attached, as shown in FIG. 4, a large space corresponding to the second groove remains between the sliding sliding main body 2 and the edge 4, and The edge body 4 is only bonded to both sides of the first groove and the bottom of the first groove, and the joint area of this part is very small. 1.Since the area of the bottom of the groove is smaller, even if the dimensional accuracy of this part is slightly poor,
There is a problem in that the adhesive state and attachment state between the edge body 4 and the sliding door body are extremely unstable.

Furthermore, the adhesive between the side surface 11 of the first groove and the sliding door main body 2 can be removed with a spatula, but the adhesive between the remaining bottom surface of the first groove and the sliding door main body 2 cannot be removed with a spatula. Therefore, even if the area is small, the adhesion of this part may cause damage to the two ends of the sliding door body 2 when it is reattached, and in some cases, this damage may propagate to the center of the sliding door main body 2. Ta. Furthermore, if too much adhesive is used, the adhesive will fill the gap between the sliding door main body 2 and the second groove 12, and as a result, the sliding door main body 2
is firmly adhered to the edge body 4. There was a problem that it became impossible to remove it without damaging it.

[Means for Solving the Problems] According to the present invention, in the sliding door formed by fitting the edge 4 having the groove 3 into the sliding door main body 2, the edge 4
The groove inner surface 5 and the fitting side surface of the sliding door main body 2 are
It is glued by an adhesive 7, while the edge 4
A material 1 having substantially no adhesive property with the adhesive between the inner bottom surface 8 of the concave groove and the end surface 9 of the sliding door main body 2.
Provided is a bran characterized by having 0 interposed therebetween.

In the present invention, the combination of the adhesive 7 and the material 10 having substantially no adhesive properties with the adhesive is
Solubility parameter of 7 and 10
are selected so that the difference between them is large.

For example, if the adhesive 7 is polyvinyl acetate, which is used in the largest amount for bonding building materials, materials 10 that have substantially no adhesive properties with this adhesive include fluorocarbon resin, polycarbonate, polyethylene, Polypropylene, polymethyl methacrylate, silicone resin, natural rubber,
SBR, silicone rubber, etc.

In addition, when a polyisocyanate adhesive is used as the adhesive 7, the material 10 having substantially no adhesive properties with this adhesive may include cellophane, cellulose ester, fluorocarbon resin, polycarbonate, polyethylene, Polypropylene, polystyrene, soft polyvinyl chloride, hard polyvinyl chloride, silicone resin, natural rubber,
Examples include SBR, butyl rubber, silicone rubber, etc.

In addition, when an epoxy/polyamine-based, epoxy/polyanhydride-based, or aliphatic epoxy-based adhesive is used as the adhesive 7, the material 10 that has substantially no adhesive properties with this adhesive is: Examples include cellophane, cellulose ester, polyester, polyethylene, polypropylene, polystyrene, soft polyvinyl chloride, silicone resin, hard polyvinyl chloride, polymethyl methacrylate, butyl rubber, and silicone rubber.

Looking at this from the perspective of adhesives and materials 10 that have substantially no adhesive properties, in contrast to many adhesives 7, there are removable materials that do not substantially have adhesive properties, and such materials Specific examples include fluorocarbon resin, polyethylene, polypropylene, polystyrene, silicone resin, silicone rubber, and the like. Of course, some of the materials listed here have adhesion depending on the type of adhesive 7.

Examples of fluorocarbon resins include polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE), and fluorinated ethylene.
Examples include propylene resin (FEP), vinylidene fluoride resin (PVdF), vinyl fluoride resin, and the like. The most popular fluorocarbon resin
Regarding PTFE, in the present invention, in addition to a homopolymer of tetrafluoroethylene, a copolymer containing 70% by weight or more, preferably 90% by weight of tetrafluoroethylene [e.g., tetrafluoroethylene/
Perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene/hexafluoropropylene copolymer, tetrafluoroethylene ethylene copolymer (ETFE), etc.] and blend polymers made of these are also included. Also,
The PTFE may contain up to 30% by weight, preferably up to 10% by weight of other thermoplastic resins.

An adhesive is a material 10 that has substantially no adhesive properties.
can be provided by various methods, such as forming a film by coating, forming a film or sheet with adhesive, and forming a sheet and fixing it with nails or staples.

Among these methods, the method of applying adhesive in the form of a film or sheet involves forming the material 10 itself, which has substantially no adhesive properties with adhesive, into a film or sheet form, and applying an adhesive to one side of the material 10 to make it adhesive. In this method, an adhesive is applied to one side of a film-like or sheet-like base material to make it sticky, and the other side is treated with a release agent. Material 1 that does not have adhesive properties
This is a method to make the surface 0.

The release agent has the contradictory properties of strongly adhering to the base material and having low adhesion to the adhesive. Therefore, it is possible to copolymerize a monomer containing a functional group that has good adhesion to the substrate with a monomer with low surface energy that has low adhesion to the adhesive, or to add a low-energy surface to a polymer that has good adhesion to the substrate. The release agent treatment is carried out by a method such as graft polymerization of a substance having the following properties.

Substances that have good adhesion to the base material differ depending on the type of base material. For cellophane, paper, etc., substances with functional groups such as OH and COOH are selected, and for vinyl chloride, substances with CN groups are selected.

As the substance having a low energy surface, long-chain alkyl groups, fluorine-containing compounds, silicon-containing compounds, etc. are selected.

The release agent is a copolymerized type of monomer with a long-chain alkyl group, i.e., a low-energy group such as an octadecyl group, and a low-energy group is introduced by reacting it with a polymer such as PVA or cellulose. There are different types.

As a type of copolymerization, An example is known in which a copolymer obtained by the formula is applied to a cellophane base material as a release agent.

In addition, as a type of polymer that introduces a low energy group, one based on the formula of cellulose derivative + C ₁₈ H ₃₇ NCO → cellulose carbamate PVA + C ₉ F ₁₉ CH ₂ NCO → perfluorinated alkyl carbamate. Examples of its use as a material are known.

Furthermore, in the present invention, a so-called release paper is suitably used as the material 10 that does not substantially have adhesive properties with adhesives. The most well-known release paper is one in which one side of the paper is back-treated with silicone and the other side has an adhesive layer. Papers used for release paper include kraft paper, glassine paper, and parchment paper. In the case of kraft paper, polyethylene, polovinyl alcohol, carboxymethyl cellulose, etc. are used as the anchor coat. On the other hand, glassine paper and parchment paper have good smoothness and low permeability, so they can be directly treated with silicone.

Silicone has a skeleton of siloxane bonds,
Organic groups (mainly methyl groups and phenyl groups) are bonded to all or part of the silicon atoms. The release silicone must satisfy conditions such as having mold release properties, not migrating to the adhesive layer, and not falling off the release paper or being easily rubbed off. Therefore, a soft elastic coating is required in which linear polymeric siloxane is partially cross-linked, and cross-linking is achieved by dehydrogenation between the Si-OH of the linear dimethylpolysiloxane terminal group and the Si-H of methylhydrodiene siloxane. It is preferable to use a reaction.

[Example] Next, the present invention will be explained with reference to an example shown in the drawings. FIG. 1 is a partial sectional view showing one embodiment of the sliding door of the present invention, and FIG. 2 is an exploded explanatory view of FIG. 1.

2 is the fusuma main body, and the fusuma paper/aluminum foil/
Chip ball / Styrofoam / Chip ball /
It has a layered structure of aluminum foil/bran paper. Reference numeral 4 denotes an edge body having a groove 3. The inner surface 5 of the concave groove of the edge body 4 and the fitting side surface 6 of the sliding door main body 2 are bonded together with an adhesive 7. A material 10 having substantially no adhesive properties with the adhesive is interposed between the inner bottom surface 8 of the concave groove of the rim and the end surface 9 of the sliding door main body 2. In FIGS. 1 and 2, an adhesive tape made of a biaxially stretched oriented polypropylene film coated with an adhesive on one side is used as the material 10 which has substantially no adhesive properties with adhesives.

To assemble sliding door 1 in Figure 1, for example,
First, the adhesive tape is attached to the inner bottom surface 8 of the concave groove of the edge body 4, and then vinyl acetate-based adhesive 7 is applied to the groove inner surface 5 of the edge body 4. It fits into the concave groove 3 of. In the sliding door 1 assembled in this way, the inner surface 5 of the groove of the edge 4 and the fitting side surface 6 of the sliding door main body 2 are adhered with an adhesive 7, and the inner bottom surface 8 of the groove of the edge 4 and the inner bottom surface of the sliding door 2 It is not bonded to the end surface 9 of. Therefore, when replacing the fusuma paper or replacing the fusuma main body 2, insert a thin spatula or cutter knife between the fitting side surface 6 of the fusuma main body 2 and the groove inner surface 5 of the edge 4 to remove the groove 3. If you move along the , the adhesive will peel off. Since there is a material 10 that has substantially no adhesive property with the adhesive, the end surface 9 of the sliding door body 2 and the inner bottom surface 8 of the groove
Since it is not substantially bonded to the sliding door, it can be easily removed by pulling the edge 4 away from the sliding door main body 2.

[Operations and effects of the invention] The inner surface of the concave groove of the rim body and the inset side surface of the sliding door body are bonded with an adhesive, and the bottom surface of the groove inside the edge body and the end surface of the sliding door body are substantially bonded with the adhesive. Since there is a non-adhesive material intervening and the sliding door is not bonded, when removing the sliding door from the rim, use a spatula, etc. to peel off the adhesive between the grooved side of the rim and the inset side of the sliding door. It can be removed just by
The end face of the sliding door body will not be torn off by the edge. Therefore, the fusuma paper can be replaced or the fusuma body can be replaced without damaging the fusuma body.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view showing an embodiment of the sliding door of the present invention, FIG. 2 is an exploded explanatory view of FIG. 1, and FIGS. 3 and 4 are partial sectional views showing conventional sliding doors. 1... Fusuma, 2... Fusuma main body, 3... Concave groove, 4... Edge, 5... Concave groove inner surface, 6... Fitting side surface, 7... Adhesive, 8... Concave groove inner bottom surface , 9...
End face, 10...A material that does not substantially adhere to the adhesive.

Claims (1)

[Scope of utility model registration request] In a sliding door formed by fitting a rim having a recessed groove into a sliding door main body, the inner surface of the recessed groove of the rim and the fitting side of the sliding door main body are bonded with an adhesive,
A sliding door characterized in that a material having substantially no adhesive properties with the adhesive is interposed between the inner bottom surface of the concave groove of one edge and the end surface of the sliding door main body.