JPS59124850A - Laminate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to an improved laminate of a flexible base fabric-soft vinyl chloride layer-acrylic resin film layer system, which has excellent cooperativity and antifouling properties.

Soft vinyl chloride resin (
Hereinafter, it will be referred to as pvc. ) Flexible notebooks that form layers are used in large tents such as air domes. This material has the essential advantages of PVC in terms of workability, economy, flame resistance, etc., but on the other hand, such tents are exposed to the outdoors for a long time, so they contain stable Bβ content. Even though the agent, etc. had been carefully examined, the resin gradually decomposed over the years, and the plasticizer migrated to the surface and gradually became sticky, and dust etc. appeared on the top surface 1. It had the disadvantage of 10 times being contaminated.

As a countermeasure for this, an acrylic resin film layer is formed on the top surface of the PVC layer, covering all the drawbacks of the conventional laminate product with only IjVC layers and achieving a certain effect.

However, under the condition of the edge Φ which is strongly measured depending on the usage condition of the laminate, cracks occur in the acrylic resin film layer.
As the process progressed further, there was also a case where the soil was applied to the underlying PVC layer and the cutting life of the agitated layer product was significantly shortened, which was inappropriate.

The present invention was made in view of the above circumstances, and as a result of horizontally dividing the stress exerted on the resin layer, particularly the acrylic resin film layer, by rubbing etc. to prevent the film layer from cracking, the film layer becomes uneven. The present invention was completed based on the discovery that it is most effective when the film is formed to a thickness of -.

The present invention relates to a laminate product in which a layer of soft PVC with a sufficient J width is formed on the front or front and back surfaces of a fibrous base fabric, and a thin acrylic resin film layer is formed on at least the upper surface of the surface layer. When the thickness of the acrylic resin film layer is non-uniform and a certain area of the film layer is sampled, the 20-50μ area and the 20-1μ area are 8.
ν of 0 to 20 vs. 20 to 80
It is the absorption of being there.

1lii hardening cloth applied to the present invention (the cloth is a natural 1h
Jj fiber, inorganic 11ii, i<m or synthetic (IS fiber is 1
'jl 11, and its form is selected from spun, filament, staple yarn, tape 2-yarn, etc. Among them, filament is preferred because it has high strength and does not elongate during use. Thinking from 10 in particular)”? Liesdel is good. Still, 7, t; The cloth is generally a plain weave I-rostrum. First, the presence of a base fabric is essential for Akira products, especially since they require strong strength.

Next, the PvC formed on one or both sides of the base fabric is not only used as a mere contact agent, but also has a sufficient amount of, for example, 005 to 1.0 +1T to maintain flame retardant properties and other necessary physical properties.
It must have a thickness of II+.

In general, the formation of the PVC layer can be carried out by topping, noringling, coating, pinning, or other methods. P
VC can be freely selected as yeast, straight, etc., and plasticizers, stabilizers, colorants, and various other unique agents can be freely added to the resin in a known manner.

Next, in the present invention, a non-uniform j
The 13th characteristic is that the acrylic resin film layer is formed with a dark appearance. The acrylic resin film layer imparts weather resistance and stain resistance to the laminated product, and in particular prevents the bleeding of the plasticizer contained in the PVC layer, and also prevents the generation of surface decomposition products of the layer and the surface adhesion caused by iMI bleed. It is important to know how to prevent such problems.

The film layer may be a film based on the T Gui method, the t:I inflation method, or other methods, and may be used either stretched or unstretched. It is best to use unstretched or low-stretched ones.
9/crn2 or higher, rewelder sewing is possible.

Film materials include polyargyl methacrylates such as notermecrylate, ethylmecrylate,
Products containing propyl methacrylate, butyl methacrylate as a raw material, or homopolymers or copolymers containing vinyl acetate, vinyl chloride, styrene, acrylonitrile, methacrylate trile, etc. as homomonomers or monomer components. , jOl) is preferably molded into a film.

A feature of the present invention is that in a laminate product in which such an acrylic resin film is formed on the top surface, the thickness of the film is non-uniform, and a certain area, for example, 3 square meters (1,73 mm) of any part. Even if a square) is taken, the thickness is 20 ~
The 50μ portion and the 20 to 171 thickness portion are 80 to 20
It consists of a ratio of 20 to 8 o.

Such a film layer with a non-uniform thickness can be suppressed by placing a film with a substantially uniform thickness onto a smooth table or roll and using a forming plate or roll having a pre-engraved non-uniform depth. A film layer having the above-mentioned thickness ratio can be obtained by doing this, but it is also possible to press both sides of a uniform film with a forming plate or roll having uneven depth. In this case, the thickness of the film is the shortest distance r when the film is cut perpendicular to the surface at the surface differential portion? 1llllll with iIf
to be determined.

These films can be pasted on the surface of the PVC layer which has been melted by heating, for example at 140°C to 200°C. It is most preferable to melt and tack the adhesive in a heated four-piece state and then apply the adhesive (71).

The present invention will be described below with respect to Embodiment 1 (11) based on the drawings.

Figure 21 shows this type of conventional laminated product in dimensions, da 1, 2.
Figures 3 and 3 show specific examples of the laminate according to the present invention. In either case, soft PVC layers 2 and 2' are formed on both sides of the fiber base fabric 1, and at least the PVC layer 2 that is covered with ice has an acrylic resin film on its upper surface. layers are formed.

Here, in the prior art, the acrylic resin film layer J/layer 3 has a smooth structure on its entire surface as shown in FIG. It is characterized by a non-uniform V-shape, especially when a certain plane is sampled, the 20 to 50μ part and the 20 to 1μ T', and the 1 part to 80 to 80μ. The ratio of 20 to 20 to 80 is Italian).

The PVC layer 2' on the back side may be omitted, or the PVC layer 2' on the back side may be omitted.
Similarly to the surface of C resin layer 2'P, an acrylic resin film layer having a non-uniform thickness may be provided. In the present invention, it is clever to adhere an acrylic resin film, which has been preformed to a non-uniform thickness, to the surface of the PVCI l'i 2 or 2,2'. In addition, after pasting a smooth film, it is also possible to subject the film to suppression processing, etc. However, [7] this suppression process does not create any unevenness on the surface because it is just an aesthetically glossy exterior monochrome L pattern. In the case of a tree, it is constant (C■
For example, the variation in thickness in a product of 3 mm2 is specified, but the comparative Jj
If the 7-1λIS portion and the 20-1μ relatively thin 1j portion are formed in the above ratio, the film crack IH,rj
The first thing that can have the best effect in terms of stopping is 1. Because it has not been confirmed experimentally, the difference in thickness should be at least 3μ f: 5 t
It is preferable that it is t or more. d other than the specified ratio,
Since the thickness of the entire film is almost uniform, although there are differences in thickness, the object of the present invention can be fully achieved.
Powerful. In addition, in't 2 of the product of the present invention shows PVC
The surface of the layer shows a relatively smooth platform, but ;'f~3
As shown in the figure (1), the surface of the VC layer may not be smooth. It's a trench, under the PVC layer? ii &;] Second A! , ; It is preferable that it digs into the cloth.

When a forming roll is used for E7, a roll having, for example, 400 to 10,000 embossed protrusions and recesses per surface is used. In addition, in the shape of the uneven part, the diameter of the convex part or the diagonal length I)) and the concave i
51+, length W) The relationship D/W can be fixed, but the point is that it is the ratio of the V t+ viscosity value in the film that forms the actual product surface, and as described in ^11, the thickness is 20 ~
The ratio of the 50μ part to the 20~1μ thick part is 80~2
It is sufficient that the ratio is 0:20 to 80. Uneven shape 17i! It doesn't matter if it's 4'H, but it's best if it's evenly scattered. For the formation of large-scale irregularities, preferable results can be obtained by preheating the acrylic film to a temperature between the glass transition point (Tg) + 30°C and the melting point (Tm) + 10°C. Shaping (d, heating both the film and the shaping tool separately and shaping) 1jl
L is fine.

The present invention is based on the above-mentioned (H,, r) structure, but also improves the weatherability of the PVC layer by promoting its surface properties.
The acrylic resin film V (for example, the strength of ] I-, 'S f' + Foil has the disadvantage of easily cracking and significantly reducing its service life, whereas this paper requires an acrylic resin film layer with an uneven thickness. The invented product completely eliminates the phenomenon of light generation, and therefore the underlying PVC layer remains in an extremely good condition for many years without cracking. Due to lice;
[7 “Tents, vehicle hoods, etc. used under conditions such as
'J'f Outdoor equipment r (products) made of Kinutoro Bamboo, which can produce a clear effect.Furthermore, in the product of the present invention, the acrylic resin film is specified to have a maximum thickness of ♀50μ. Since it is a laminate product, it is possible to perform wells hR'' and has excellent practicality, making it an extremely useful laminate product.

[Brief explanation of the drawing]

Figure B1 is a schematic cross-sectional view showing a specific example of the present invention product. , -PVC layer, 3 =・(
(i (-next) acrylic resin film layer, 4... (honoura Akira) acrylic resin filtration layer. Patent applicant Hiraoka Orisen Co., Ltd. Rishiko Kojin Ben UP specialist Kai Tadashi Shinri, 1λ
1 Figure '+'= 2 1:y, 1 Figure 3 Procedure Correction Cao (method) % formula % 2. Name of the invention Laminated product 3. Person making the amendment! Relationship with JLVI 'I'j WF Applicant residence 1'
9f Toji 61S 3-20-1 Arakawa, Arakawa-ku Name Hiraoka Rosen Co., Ltd. 4, Agent 6, Detailed explanation of the invention of the subject matter of the amendment Column 7, Contents of the amendment + 1 ++ Town + Page line to H ＝■Sho Seimae Kedomeki 32 Something to be certain 4 7 Coating Denovisig Coating,
Garaping 6 1o Surface W) 9
8 You can do both at the same time or each at the same time.

Claims (1)

[Claims] Table 1n) of the fibrous base fabric is a laminated product in which a layer of soft vinyl chloride resin with sufficient strength is formed on the front and back sides, and an acrylic resin film layer is formed on at least two sides of the surface layer. J) The thickness of the acrylic resin film layer on the upper surface is formed unevenly, and a certain area of the film layer is taken.
A laminate product characterized in that the ratio of 20 to 50 μ and 20 to 1 μ in the ratio of 80 to 20 to 20 to 80 is +1 to 1 ν.