JPS6010856Y2 - Architectural laminate - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to architectural laminates.

The purpose is to provide a laminated material for construction that has excellent physical properties, workability, and handling properties as a ceiling material, wall material, floor material, etc.

Traditionally, laminated materials for construction have generally consisted of polyvinyl chloride sheets or foam layers, either alone or in combination, with organic or inorganic substrates such as paper, woven fabrics, or non-woven fabrics laminated on the back side. It is used.

When the base material used is a resin sheet or an organic base material, it has good strength, but it has poor dimensional stability during polyvinyl chloride processing, during product construction, and after construction due to oral change, deflection, etc. There are problems and defects such as pattern misalignment and curling occur.

In addition, asbestos paper, which is often used with an inorganic base material, has good dimensional stability but is weak in strength, making it difficult to bend, easily peeling between layers, and being heavy, making it inconvenient to handle. It is something.

Recently, the use of glass fiber paper as the base material has been considered, and although it is lightweight and has good dimensional stability, it is weak in strength and has low delamination strength, and it also causes damage to the human skin due to the glass fibers falling off. It is irritating and has problems commercially, such as when processing polyvinyl chloride and the smoothness of the surface of laminated materials.

In order to improve this drawback of glass fiber paper, research has been carried out on the mixing and combining of pulp, etc. However, in the mixing paper method, for example, if the pulp is 5 parts by weight or less per IO part of glass fiber, the dimensions are stable. It is said to be at the limit in terms of properties, and therefore is incomplete in terms of other physical properties and shedding of glass fibers.

On the other hand, sheets have also been developed in which a layer consisting only of pulp or synthetic fibers, or a layer consisting of fibers such as pulp containing a small amount of glass fibers is laminated on one or both sides of a glass fiber layer.

However, although this method can prevent the glass fibers from falling off, it suffers from a decrease in dimensional stability, tends to cause curling due to the combination of different layers, and has the drawbacks of weak interlayer peeling strength, so it is not a complete solution. It is impossible.

The present invention was made with the aim of solving the drawbacks of base materials using glass fibers.The purpose of this invention is to increase the amount of bulb components mixed into the glass fibers, resulting in dimensional stability caused by increasing the amount of pulp components. The reduction in properties is prevented by the combination of curable resin, and the physical properties during coating or lamination of PVC processing and during heat treatment are good, so there is almost no elongation or distortion, making it easy to process. We have devised a laminate material that has good dimensional stability in terms of handling, construction, and post-construction changes in the final product, is lightweight, and has almost no shedding of glass fibers.

That is, a mixed paper made of glass fiber and pulp contains as essential components a thermosetting resin, a self-crosslinking or reactive resin using a curing agent, polyvinyl alcohol that reacts with heat,
An architecture characterized in that a polyvinyl chloride layer is provided on a base sheet containing one or more curable resins selected from casein, a polymer compound such as a water-soluble synthetic resin ammonium salt, and one or more curable resins. This led to the devising of a laminated material for use in industrial applications.

The present invention will be explained with reference to the drawings and according to its manufacturing process.

FIG. 1 is an enlarged longitudinal cross-sectional view of the laminated material of the present invention.

As shown in this figure, in the present invention, a polyvinyl chloride layer 1 is provided on the surface of a base sheet 2. It is formed of a resin layer 5 made of resin and other resin components added as necessary.

Note that this surface may be patterned or embossed.

In addition, although the drawing shows that there is a clear boundary between the polyvinyl chloride layer 1 and the base sheet 2, the base sheet 2
When the amount of resin added as needed is small, the polyvinyl chloride of the polyvinyl chloride layer 1 seeps into the base sheet 2, and there may be no clear boundaries as shown in the drawing, which may cause problems such as delamination strength. In fact, the more and deeper the penetration of the polyvinyl chloride, the better.

The method for manufacturing the laminated material of the present invention is to mix and disperse beaten pulp into the glass fiber component to create a slurry, mix this slurry into papermaking, and mix the resin component with a curable resin and, if necessary, a thermoplastic resin. Then, this sheet may be used as is, but it may be heated and pressurized, or a polyvinyl chloride layer may be provided on its surface and then heated and processed to form the base sheet 2. It is used as.

Then, polyvinyl chloride is processed on this base sheet 2 by a non-foaming processing method or a foam layer processing method, and processing such as patterns and irregularities is applied as necessary.

Furthermore, it is also possible to provide a transparent layer on the outermost surface depending on the purpose.

The processing method may be a coating method, a calendar method, a bonding method, or the like.

The product of the present invention obtained as described above may be directly applied to ceilings, walls, floors, etc., or may be applied after being laminated to waist plywood, plasterboard, etc.

The curable resin in the present invention is a polymer compound that reacts with heat or a curing agent to become water resistant, plasticizer resistant, and solvent resistant, and that also prevents the expansion and contraction of pulp components, such as urea-based, melamine-based, Thermosetting resin such as epoxy or NBR.

Acrylic type, vinyl acetate type, vinyl type, ethylene vinyl acetate type, copolymers of these, etc., and reactive resins that react with heat or hardening agents such as polyvinyl alcohol, cellulose type, starch type, etc. be.

Furthermore, resins that become water resistant when heated, such as water-soluble casein and ammonium salts such as polyacrylic acid/styrene maleic acid copolymers, can also be used.

Note that these resins may be used alone or in combination of two or more.

In particular, among the curable resins, the use of resins that maintain adhesive heat-sealing properties even after reaction contributes to delamination strength and prevention of glass fibers from falling off.

It is preferable that the amount of this curable resin is 5% or more based on the fiber component, and if it is less than 5%, it may be difficult to prevent a decrease in dimensional stability due to a high content of pulp component. It will become.

If the combination of this curable resin alone is insufficient in properties such as shedding of glass fibers and delamination strength, a thermoplastic resin may be used in combination. Preferable results can be obtained by blending resins such as vinyl chloride, ethylene vinyl acetate, vinyl acetate, NBR, and acrylic resins, or copolymers thereof.

These resins are blended in the form of powder, fiber, emulsion, or aqueous solution, and the blending method can be by adding them internally to a mixed slurry of glass fibers and pulp, or by impregnating them on-machine or off-machine after papermaking. .

Furthermore, it is also possible to add stabilizers, plasticizers, flame retardants, fillers, paper-making binders, etc., depending on the purpose.

The content of the pulp component in the fiber component in the present invention is desirably 5 parts by weight or more per 10 parts by weight of glass fiber, and particularly preferably from 70 to 10 parts by weight.

If the amount of this pulp component is less than 50 parts by weight per 100 parts by weight of glass fibers, problems such as strength and skin irritation due to fiber shedding, which are disadvantages of glass fibers, will occur.

It goes without saying that a part of this pulp component may be replaced with other organic or inorganic fibers.

As described above, the laminated material of the present invention prevents the strength and skin irritation caused by fiber shedding, which are the disadvantages of glass fiber paper, by increasing the pulp component, and has the advantages of glass fiber paper, which are caused by increasing the pulp component. It is made of polyvinyl chloride using a base sheet whose dimensional stability is prevented from decreasing with a curable resin, and is easy to handle and install, and has sufficient practical properties such as strength and dimensional stability. It is.

Example: To a mixed slurry of 100 parts by weight of glass fibers dispersed with a small amount of a dispersant and 75 parts by weight of beaten pulp (NBKP), fully kephized polyvinyl alcohol (electrochemical (brand name: Denka Poval) swollen in water was added. 17E)
20 parts by weight were dispersed and made into a paper, and then on-machine impregnated with 10 parts by weight of the above 10% polyvinyl alcohol aqueous solution and 30 parts by weight of a self-crosslinking acrylic emulsion (Nippon Zeon (trade name: Zeon L x 851)). Thermoplastic heat-sealable ethylene vinegar emulsion (Sumitomo Chemical (suriso product name Sumikaflex #510) 1
The mixed paper was impregnated with 0 part of saliva at an impregnation rate of 20% and dried.

After further heat treatment at 150° (x2 minutes), the total weight is 60g/
A mixed paper base sheet of rrt was prepared.

Next, polyvinyl chloride paste was applied, heated and pressed using a vinyl chloride embossing machine to give a smooth finish, a pattern was printed on the paste using a gravure method, and an uneven finish was applied by embossing to produce wallpaper.

This product had strong strength and good workability, was easy to handle during construction, and had good pattern matching, just like the product processed with vinyl chloride.

In addition, in the above example, ethylene vinyl acetate powder (trade name Flowback MK201 of Steel Chemical Co., Ltd. (+1)) was added to the mixed slurry of glass fiber, pulp, and polyvinyl alcohol.
QN) 100] i parts were mixed and dispersed and the same paper making as above was carried out.
Total weight after impregnation, drying and heat treatment: 180y/77'1
A base sheet of 3501 mm was prepared, and heated and pressed with a clearance roll to a thickness of 0.55 rIr!n to create a smooth surface, and a foamed polyvinyl chloride paste of 3501 was applied to this surface.
/y4 was coated, a pattern was printed on this, and a transparent vinyl chloride film with a thickness of 0.2 rran was further laminated, and the entire bond was treated in a heating oven at 200° C. for 3 minutes to foam, thereby producing a flooring material.

This product is lighter and stronger than products based on asbestos paper, and has no delamination or shedding of glass fibers, is lightweight, easy to handle during transportation and construction, and has good pattern matching. .

[Brief explanation of the drawing]

FIG. 1 is an enlarged longitudinal cross-sectional view of the laminated material of the present invention. 1... Polyvinyl chloride layer, 2... Base sheet, 3... Glass fiber, 4...
Pulp, 5... curved resin layer.

Claims (1)

[Scope of utility model registration request] Mixed paper made of glass fiber and pulp contains thermosetting resin as an essential component, self-crosslinking or reactive resin with a hardening agent,
Polyvinyl alcohol, casein, which reacts with heat.
Architectural laminate, characterized in that a polyvinyl chloride layer is provided on a base sheet made of a polymer compound such as a water-soluble synthetic resin ammonium salt, and one or more curable resins selected from among them. Material.