JPH04281098A - Wallpaper having projector screen function and its production - Google Patents

Abstract

PURPOSE:To provide wallpaper having a projector screen function together and a method for producing the aforementioned wallpaper. CONSTITUTION:Wallpaper is characterized as follows. At least one expanded resin layer 2 is provided on a colored substrate 1 and at least one thermoplastic resin layer 3 containing a pearly pigment, etc., mixed therein is formed on the above-mentioned resin layer 2. Transparent beads 4 are further arranged all over the surface of the topmost layer of the aforementioned thermoplastic resin layer. Furthermore, a method for producing the aforementioned wallpaper is provided.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wallpaper that also functions as a projector screen and a method for manufacturing the same.

0002

[Prior art] Overhead projector (OHP)
) has become popular and is widely used in schools, companies, lectures, etc., but conventionally, PVC screens with white surfaces are often used as projection screens. Furthermore, in recent years, projection television systems using liquid crystal panels and the like have appeared on the market. These OHPs and projection televisions usually use a screen, and even if there was no screen, it was possible to see images, text, etc. even on a white wall, but in the first place, the suitability of wall materials and the suitability of screens are fundamentally different. Since the images are different, there are problems such as images being too dark to be seen clearly. In particular, in projection televisions, the brightness of the light source cannot be increased, and in order to obtain bright images, there is a growing demand for a brighter screen with better reflective properties than before.

[0003] However, using a screen requires space to install it, and it takes time and effort to prepare it in advance. Furthermore, there is a limit to the size of the screen when considering mobile installation. Therefore, there is a need for a means that can be used immediately when a user wants to use an OHP or the like in a meeting, etc., even if a screen is not prepared.

0004

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a projector screen in order to instantly meet the demand for using OHP, etc., without having to prepare a screen each time. The purpose of the present invention is to provide wallpaper that has both the functions of

[0005]

[Means for Solving the Problems] In order to achieve the above object, the wallpaper of the present invention has at least one foamed resin layer on a colored base material, and at least one layer containing a pearl pigment or the like thereon. The thermoplastic resin layer has a thermoplastic resin layer with transparent beads arranged all over the surface of the uppermost layer, or the uppermost layer of the thermoplastic resin layer has an embossed grain pattern on the surface. It is characterized by this.

[0006] Furthermore, the method for producing wallpaper of the present invention involves coating a colored base material with at least one resin layer containing a heat-foaming agent, and on top of that a thermoplastic resin layer containing at least one pearl pigment or the like. Laminating the resin layers, further arranging transparent beads on the surface of the uppermost layer of the thermoplastic resin layer and pressing lightly from above if necessary, then heating the whole to foam the foaming agent-containing resin layer. It is characterized by:

[0007] Furthermore, the method for producing wallpaper of the present invention involves coating a colored base material with at least one resin layer containing a heat-foaming agent, and on top of that a thermoplastic resin layer containing at least one pearl pigment or the like. After the resin layers are laminated, the entire layer is heated to foam the foaming agent-containing resin layer, and the surface of the uppermost layer is further embossed with a grain pattern.

The present invention will be explained in detail below. FIG. 1 is a sectional view showing an example of the structure of the wallpaper of the present invention. According to this configuration example,
A foamed resin layer 2, a first thermoplastic resin layer 3a, and a second thermoplastic resin layer 3b are laminated in this order on the colored base material 1, and the surface of the second thermoplastic resin layer 3b, which is the uppermost layer, It has a structure in which transparent beads 4 are arranged on one side.

The colored base material 1 is preferably a colored backing paper or a backing paper with solid printing applied to the surface thereof. By coloring or solid printing, the diffused reflection of light can be reduced and the effect as a projector screen can be enhanced. Also, the color of the wallpaper is not too bright and has a calming color. Any color may be used for solid printing, but solid black is most preferable. In addition, the backing paper has a property (peelability) of peeling between the layers of the backing paper when re-pasting the wallpaper, which makes it difficult to apply putty to eliminate unevenness and cleaning areas where it cannot be properly pasted. etc.).

The foamed resin layer 2 is formed by containing a foaming agent in a paste of thermoplastic resin such as vinyl chloride resin, and coating this on the colored base material 1 and causing it to foam. By providing the resin layer 2, unevenness can be covered without covering the base of the wall. As a foaming agent,
If a normal organic foam is used, gas may remain between the layers and the sheet may swell, or the cells may collapse upon reheating. Therefore, in the present invention, it is preferable to use a heating type capsule foaming agent. The amount of capsule foaming agent used is about 2 to 20 parts by weight based on the paste resin. Although one foamed resin layer 2 is usually sufficient, two or more layers may be provided depending on the thickness.

The thermoplastic resin layer 3 is made of a thermoplastic resin such as vinyl chloride resin containing a pearl pigment or the like in order to provide a projector screen function, and in the configuration shown in FIG. Although it has a laminated structure consisting of layers (3a and 3b), it may have a single layer structure or a multilayer structure of three or more layers. The pearl pigment used is
A type of filler in which mica is coated with titanium dioxide, and a scale-like filler with a titanium coverage of 28% and a particle size of 5 to 60 μm (average particle size of 30 μm) is preferable from the viewpoint of coating suitability. The pearl pigment is usually used in an amount of about 30 parts by weight or less based on the resin.

The thermoplastic resin layer 3 can also be made into a colored paste layer by mixing ink of a desired color into a transparent paste (the amount used is usually about 3 parts by weight or less based on the resin). For example, in the configuration shown in FIG. 1, the first layer 3a can be a colored paste layer and the second layer 3b can be a pearl pigment-containing layer.

[0013] In forming the thermoplastic resin layer 3 and the foamed resin layer 2, known coating means can be used. In addition to forming the thermoplastic resin layer 3 as a paste layer, it may also be formed as a film.

The uppermost layer of the thermoplastic resin layer 3 (3b in FIG. 1)
) By arranging transparent beads 4 all over the surface,
To provide an effective projector screen function. That is, the image is clearly projected from a wide range of angles, so that the image is clear from the direction in which the light converges, but becomes difficult to see when the viewing angle is changed. The transparent beads can be manufactured by, for example, applying an adhesive for adhering glass (paste is also acceptable) and then wiping the transparent beads in the same manner as in the known sandpaper manufacturing method. As the transparent beads, glass beads are used, and in order to have an effective projector screen function, the refractive index of the glass beads is preferably 1.0 to 2.5, particularly about 1.9, and also has good workability as wallpaper. From this point of view, the particle size of the glass beads is preferably 100 μm or less.

[0015] Instead of arranging transparent beads on the surface of the uppermost layer of thermoplastic resin layer 3, it can be provided with a projector screen function by embossing it. In this case, the screen changes from a transmissive type to a reflective type. By applying embossing, it is possible to disperse the reflection of light and eliminate glare. In this case, the embossing should be a grain pattern that does not cause moiré. Compared to when using transparent beads,
It is advantageous in terms of price, stain prevention, and safety.

[0016]Furthermore, anti-mold performance can be added by adding a fungicide to the formulation of the wallpaper. As a fungicidal agent, Biosite (manufactured by Taisho Co., Ltd., trade name) or the like can be used. Furthermore, stain resistance can be added by applying a top coat. The material of the top coat is a self-crosslinking type acrylic resin or the like. Such anti-mold and anti-stain properties can increase the added value of wallpaper as a product.

[0017]

EXAMPLES The present invention will be explained in more detail below with reference to Examples.

200 wires on backing paper (basis weight 75g/m2)
Black ink (VD ink normally used for wallpaper, manufactured by Toyo Ink Mfg. Co., Ltd., vis #3 Zahn Cup 16 seconds ± 1 second) was printed on a 42 μm solid plate. Paste A below was applied thereon to a thickness of about 0.15 m/m and gelled, and then paste B below was laminated to a thickness of about 0.08 m/m and gelled. Then apply paste C below to a thickness of about 0.
．． After laminating them at a thickness of 0.4 m/m and heating the whole to foam, an adhesive for adhering glass is applied to the surface to give a refractive index of 1.04 m/m.
9. The wallpaper of the present invention was obtained by spraying glass beads with a particle size of 100 μm. The resulting wallpaper not only had the necessary suitability for wallpaper, but also had an excellent projector screen function that allowed images to be clearly seen from a wide range of angles.

The composition of each paste layer is shown below. In addition,
Parts represent parts by weight.

Paste A Vinyl chloride resin
100 copies
Dioctyl phthalate (D
OP) 55 copies
Stabilizer (zinc-tin type)
2nd part
calcium carbonate
100 copies
capsule blowing agent
7th part
Titanium
10 copies
Diluent (mineral spirit (product name)) Appropriate amount Paste B Vinyl chloride resin
100 copies
DOP
50 copies
Stabilizer (mentioned above)
2nd part
blue ink
0.1 part
Diluent (mentioned above)
Appropriate amount
Paste C Vinyl chloride resin
100 copies
DOP
5
0 parts Stabilizer (mentioned above)

Part 2 Pearl pigment
20 parts diluent (mentioned above)
Appropriate amount

[0021]

[Effects of the Invention] As explained above in detail, according to the present invention, it is possible to obtain a wallpaper that is not only suitable as wallpaper but also has an excellent projector screen function, and
When you want to use a homepage or the like, you can immediately project an image onto the wall material on the spot without having to prepare a screen, which is simple, convenient, and highly effective.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the structure of wallpaper of the present invention.

[Explanation of symbols]

1 Colored base material 2 Foamed resin layer 3 Thermoplastic resin layer 4 Transparent beads

Claims (4)

[Claims] Claim 1: On a colored base material, there is at least one foamed resin layer, on which there is at least one thermoplastic resin layer mixed with a pearl pigment, etc., and the uppermost layer of the thermoplastic resin layer is A wallpaper with a projector screen function, characterized by transparent beads arranged all over the surface. 2. On a colored base material, there is at least one foamed resin layer, on which there is at least one thermoplastic resin layer mixed with a pearl pigment, etc., and the uppermost layer of the thermoplastic resin layer is A wallpaper that has a projector screen function and is characterized by an embossed grain pattern on its surface. 3. On a colored base material, at least one resin layer containing a thermal foaming agent is coated, and on top of that, at least one thermoplastic resin layer containing a pearl pigment or the like is laminated, and then the thermal foaming agent is applied. It has a projector screen function characterized in that transparent beads are arranged all over the surface of the uppermost layer of the plastic resin layer and are lightly pressed from above if necessary, and then the whole is heated to foam the foaming agent-containing resin layer. How to make wallpaper. 4. After coating at least one resin layer containing a heat-foaming agent on a colored base material and laminating thereon at least one thermoplastic resin layer containing a pearl pigment or the like, the whole is coated. A method for producing wallpaper having a projector screen function, which comprises heating the foaming agent-containing resin layer to foam it, and further embossing the surface of the uppermost layer with a grain pattern.