JPH06126919A - Manufacture of laminated sheet material - Google Patents

Abstract

PURPOSE:To provide a method for providing easily a laminated sheet equipped with various functions such as an odor-removing function, a moisture-absorption breathing function, a making fire retardant function, an antistatic function, a light-heat conversion function, etc., by a method wherein a reasonable method which can manufacture the laminated sheet highly efficiently by a simple process while a space is being saved, is provided. CONSTITUTION:When a film is formed by coating mono liquid type liquid synthetic resin on a laminated sheet or a dishcloth, a short unhardened sticky state until the resin is hardened is used to spray hot melt resin powder and additionally functioning powdery agent uniformly thereon. The powdery agent is solidly fixed by hardening operation with the film-forming resin, and a laminate base material is fixed onto the fixed hot melt resin powder by heating and pressurizing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated sheet and a method for producing the same, and more specifically, for building materials such as wall sheets and floor sheets, or for moisture-permeable waterproof clothing (for example, ski wear, mountain climbing clothes, etc.). The present invention relates to a new method capable of efficiently mass-producing laminated sheets used as the material for the fabric.

[0002]

2. Description of the Related Art A conventional method for manufacturing a laminated sheet is
A release material such as release paper is unwound from the unwinder, a synthetic resin material is coated on the unwound sheet material to form a synthetic resin film, and the synthetic resin layer is used as a release sheet when dried and cured. A film-forming step of winding together with a winder, and unwinding the laminated sheet wound around the beam of the winder, and further adding thermoplastic adhesive resin in the form of dots or planes onto the synthetic resin film. It includes two steps such as a laminating step in which the laminated base material and the synthetic resin film are thermocompression bonded by a calender machine while the laminated base material is applied to the surface and dried appropriately by a drier. In addition, the manufacturing process is long, it takes time to manufacture, and the fixed cost increases due to the large space of the production line where the manufacturing equipment is arranged. There was no.

The present invention was made in view of the fact that the prior art for producing a laminated sheet had problems in terms of production efficiency and production cost as described above.

[0004]

Technical Problem to be Solved However, one of the technical problems to be solved by the present invention is to provide a new method capable of efficiently manufacturing a laminated sheet in a smaller space by simplifying the manufacturing process. Is to provide.

Further, another technical problem of the present invention is not only to obtain a laminated sheet by simply stacking and bonding a plurality of different layers as in the conventional method, but, if necessary, a deodorizing function and a moisture absorbing and breathing function. Another object of the present invention is to provide a method for producing a laminated sheet, which is capable of easily imparting various functions such as a flame retardant function, an antistatic function, and a light-heat conversion function on a production line.

Further, another technical object of the present invention is to provide a laminated sheet having a hot melt adhesive layer and capable of being easily joined to an object to be adhered by thermocompression bonding.

Means adopted by the present inventor to solve the above technical problems are as follows.

That is, according to the present invention, a release sheet material or a cloth is coated with a one-pack type liquid synthetic resin, and the surface of the synthetic resin film thus formed is hot in a short time while it is in an uncured adhesive state. Melt resin powder, if necessary, evenly spread the required additional functional powder, and the powder that can be applied in a plane by skillfully utilizing the uncured adhesiveness of the synthetic resin film. An adhering means, a solidification fixing means for solidifying and fixing the sprinkled hot-melt resin powder to the synthetic resin film by utilizing the hardening action of the synthetic resin film, and further, if necessary, the synthetic resin film thus hardened. The point is that the above technical problems are solved all at once by adopting a laminating means in which a laminating base material is heat-pressed on the hot melt resin powder fixing surface side.

[0009]

EXAMPLES The present invention will be described in more detail below with reference to examples.

Example 1 On a release paper having a release layer on the surface thereof, a urethane resin solution having the following composition and a viscosity of 3,000 cps was applied with a flat blade doctor to a clearance of 50 μm. I. Crisbon NB 637 (manufactured by Dainippon Ink and Chemicals, Inc.) 100 parts b. Dailac White WT-1300 (manufactured by Dainippon Ink and Chemicals) 10 parts c. Methyl ethyl ketone (as a diluting solvent) 80 parts

When the urethane resin liquid of the above composition applied on the release paper is in an uncured adhesive state, the particle size is 74 to 149 μm.
842P48 (manufactured by Toray Industries, Inc .: polyamide-based hot melt resin) is evenly sprinkled on the adhesive surface of the urethane resin layer so as to have an average of 15 g / m ² by a roll-type powder sprinkling machine, and immediately at 120 ° C. by a hot air dryer. By drying for 1 minute at the temperature of 1 to evaporate the solvent, the hot melt resin powder is fixed by the cured film formation of the one-pack type urethane resin, and then the polyester tricot knitted fabric having a basis weight of 200 g / m ² In the state of being superposed on the ground, pressure was applied at 4 kg / cm ² with a nip roller heated to 140 ° C.

Next, the laminated sheet thus formed was brought into contact with a cooling cylinder to be cooled to solidify the hot melt resin, and then the release paper was removed from the laminated sheet. The laminated sheet (laminate fabric) thus obtained has a peel strength of 700 g / in (hot melt resin x knitted fabric), moisture permeability (3000 g / m ² 24 H, water pressure resistance of 3 kg / cm ² or more). It was confirmed by the inventor's experiment.

Example 2 A release paper having a release layer on its surface was coated with a urethane resin solution having the following composition and a viscosity of 3,000 cps with a flat blade doctor to a clearance of 50 μm. I. Crisbon NB 637 (manufactured by Dainippon Ink and Chemicals, Inc.) 100 parts b. Dailac White WT-1300 (manufactured by Dainippon Ink and Chemicals) 10 parts c. Methyl ethyl ketone (as a diluting solvent) 80 parts

When the urethane resin liquid of the above composition coated on the release paper is in an uncured adhesive state, the particle size is 74 to 149 μm.
842P48 (manufactured by Toray Industries, Inc .: polyamide-based hot melt resin) was evenly spread on the adhesive surface of the urethane resin layer so as to have an average of 15 g / m ² by a roll type powder spreader, and then the particle size was about 60μ. KD-211G (made by Lhasa)
Disperse the deodorant of 1 to 5g / m ² on another roll-type powder spreader, and immediately dry it with a hot air dryer at a temperature of 120 ° C for 1 minute to evaporate the solvent. Fix the hot-melt resin powder and deodorant by film-forming the resin, and then attach this to the basis weight 2
A polyester tricot knitted fabric of 00 g / m ² was superposed on the knitted fabric, and was pressed at 4 kg / cm ² with a nip roller heated to 140 ° C.

The laminated sheet of Example 2 thus obtained had a peel strength of 650 g / in and a moisture permeability of 4000 g / m ² 24 H,
It was confirmed by the experiment of the present inventor that the water pressure resistance has a performance of 3 kg / cm ² or more.

Regarding the deodorizing performance of the laminated sheet of Example 2 above, the present invention has the ability to deodorize 3 liters of ammonia odor to 70}% in 5 minutes with a size of 10 cm × 10 cm. It was confirmed by the experiment of the person.

[Example 3] A polyester tricot plain weave having a basis weight of 500 g / m ² and a urethane resin solution having a viscosity of 10,000 cps of the following formulation was used to give a clearance of 100 μ using a flat blade doctor.
m. I. Crisbon NB 637 (manufactured by Dainippon Ink and Chemicals, Inc.) 100 parts b. Dailac White WT-1300 (manufactured by Dainippon Ink and Chemicals) 10 parts c. Methyl ethyl ketone 30 parts

When the urethane resin liquid of the above composition applied on the plain weave is in an uncured adhesive state, the particle size is 74 to 149 μm.
842P48 (manufactured by Toray Industries, Inc .: polyamide-based hot melt resin) was evenly spread on the adhesive surface of the urethane resin layer so as to have an average of 15 g / m ² by a roll type powder spreader, and then the particle size was about 60μ. KD-211G (made by Lhasa)
The deodorant is sprayed with another roll-type powder spreader to an average of 5 g / m ² and immediately dried with a hot air dryer at a temperature of 120 ° C for 1 minute to evaporate the solvent and the urethane resin. After the hot melt resin was fixed by the cured film formation, the hot melt resin was then contacted with a cooling cylinder to be cooled to solidify the hot melt resin. The plain woven laminated sheet of the example thus obtained is suitable for wallpaper because the woven ground has a texture suitable for interior decoration, and the interior decoration can be easily performed by pressing the wall surface with an iron etc. Met.

Although the embodiments of the present invention are generally as described above, the present invention is by no means limited to the above-mentioned embodiments, and various arrangements can be made within the scope of the claims. Needless to say, the thickness of the resin layer when a silicone rubber sheet is used as a release sheet, various woven fabrics or non-woven fabrics are used as the fabric, and a liquid synthetic resin is coated to form a film. From ultra-thick (eg 10 mm thick) to ultra-thin (eg 10 μ
(m or less), and as additional functional powders that can be further sprinkled, hygroscopic and breathable ceramic powder, microcapsule extinguishing agent with fire extinguishing function, antistatic material, high-efficiency far-infrared radiant ceramic powder with light-heat conversion capability are hot-melted Naturally, design changes such as spraying and fixing with powder belong to the technical scope of the present invention.

[0020]

As described above, according to the method of the present invention, a release sheet or a cloth is coated with a liquid synthetic resin, and the synthetic resin is used in a uncured adhesive state for a short time. Laminated sheet through a series of simple steps such as skillfully spreading hot melt powder or any additional functional powder, and fixing the hot melt resin powder or additional functional powder by the solidification force when the coating resin is cured. Since it can be continuously manufactured, the productivity is dramatically improved, and both the fixed cost and the variable cost are reduced by the simplification of the production process, and the manufacturing cost is reduced.
Furthermore, since the production line can be significantly downsized, it becomes possible to perform the production in a space-saving manner.

Further, according to the present invention, unlike the conventional method for producing a laminated sheet material, an aging treatment (for example, urethane resin) for aging the adhesive (for example, crosslinking reaction of urethane resin) after laminating is performed. 24 at 20-25 ° C
(~ 48 hours) is not required, and it is possible to shorten the delivery date and omit the aging space.

Further, according to the method of the present invention, the deodorizing function,
Select various additional function powders with desired functions such as moisture absorption breathing function, flame retardant function, antistatic function, light-heat conversion function, and even spread them on the uncured coating resin layer By doing so, it becomes possible to highly efficiently manufacture a laminated sheet having various necessary functions.

In addition, in the case where various additional functional powders are solidified and fixed by the method of the present invention to produce a laminated sheet, it is expensive as an additional functional powder in the liquid synthetic resin for film formation as in the conventional method. In addition to having no adverse effect on the strength and adhesive strength of the film formed by using a fine particle formulation, the laminated sheet produced by the method of the present invention is a film on which an additional functional powder is formed. The surface area of the film exposed from the film is large because it is solidified and fixed at the interface between the film and the laminated base material, and the area embedded in the film resin is very small compared to the conventional product, so it was sprinkled and solidified. The additional functional powder will function effectively.

Furthermore, since the hot melt fixing surface of the laminated sheet of the present invention can be heat-bonded to a required place, it can be used as a wall sheet or as a sealing material, which opens up a very wide range of applications. It is possible.

As described above, according to the present invention, excellent practical and economical merits which cannot be expected from the conventional technique of this kind can be obtained, and its industrial utility value is extremely high.

Claims (3)

[Claims] 1. A release sheet material is coated with a one-liquid type liquid synthetic resin, and hot-melt resin powder is evenly spread while the surface of the synthetic resin film thus formed is in an uncured adhesive state. Then, the sprinkled hot melt resin powder is solidified and fixed on the surface by curing of the synthetic resin layer, and then the laminated base material is heated and pressure bonded to the hot melt resin powder fixing surface side of the synthetic resin film. For manufacturing the laminated sheet material. 2. A mold release sheet material is coated with a one-liquid type liquid synthetic resin, and while the surface of the synthetic resin film thus formed is in an uncured adhesive state, hot-melt resin powder and additional functional powder are added. After the hot-melt resin powder and the additional functional powder which have been evenly spread and solidified and fixed on the surface by curing of the synthetic resin film, the laminated base material is fixed on the hot-melt resin powder fixing surface side of the synthetic resin layer. A method for manufacturing a laminated sheet material, comprising: 3. A one-pack type liquid synthetic resin is coated on a cloth, and while the surface of the synthetic resin film thus formed is in an uncured adhesive state, hot-melt resin powder is evenly spread and sprinkled. A method for producing a laminated sheet material, characterized in that the hot-melt resin powder is solidified and fixed on the surface by curing the synthetic resin film.