JPH01285346A - Laminated sheet material and preparation thereof - Google Patents

Abstract

PURPOSE:To provide a laminated sheet material having a three-dimensional feeling in its pattern appearance and showing high-class taste, by forming one pattern into positive and negative pictures and superposing both pictures through a transparent or translucent center layer. CONSTITUTION:This laminated sheet material consists of a transparent or translucent center layer 1 and the coating layers 2, 3 laminated to both surfaces thereof and at least either one of both coating layers 2, 3 is transparent or translucent. A position where a picture is applied can be appropriately determined but it is pref. to set said position between the center layer 1 and the coating layers 2, 3. Two patterns in the relation of positive and negative pictures are applied to the front and back surfaces of the center layer 1. When the coating layers are respectively formed to the front and back surfaces one by one and the pattern of the positive picture is applied to the inside surfaces of the coating layers, the pattern of the negative picture is applied to the center layer or the insides of the coating layers. When the pattern of the positive picture is applied to the center layer, two patterns may be applied in the same direction but, when said pattern is applied to the coating layers on the opposite side, it is necessary to apply the patterns of the negative picture symmetric to the pattern of the positive pattern left and right.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a laminated board material that can be used for windows, doors, partitions, daylighting, lighting, etc., and a method for manufacturing the same.

[Conventional technology]

Conventionally, various translucent materials have been used for windows, doors, partitions, daylighting, lighting, etc.

Among them, stained glass is a typical example. However, stained glass is fragile and expensive, so there is a need for an alternative.

As substitutes, transparent plastic plates, colored transparent plastic plates, printed transparent plastic plates, transparent plastic plates with a protective film on the printed surface, transparent colored FRP plates, and the like are known.

In addition, in order to make the appearance more desirable, printing on one or both sides, coloring, patterning, etc.
In addition, a skin layer is also provided to protect the surface.

However, in either case, the appearance is flat, and if the pattern is complicated, it will not give a clean feeling, and if the pattern is simple, it will give a sense of luxury.

[Problems to be Solved by the Invention] An object of the present invention is to provide a laminate board material that gives a high-class feel by giving a three-dimensional effect to the pattern and, ultimately, to the appearance, and a method for manufacturing the same.

More specifically, it is safer and stronger than glass.
To provide a beautiful laminated board material that is excellent as a building material for walls, doors, partitions, etc. and as a decorative material, and a method for manufacturing the same.

[Means for Solving the Problems] The present inventors created a positive image and a negative image of one pattern, and by overlapping them with a transparent or translucent center layer in between, they created a sense of beauty that was not available with previous materials. The present invention was completed by focusing on the fact that it can be done.

The present invention is a positive-negative laminate board. When the positive and negative images are superimposed and slightly shifted, or a transparent material is placed between them and viewed from the side, the two designs stand out, creating a mysterious beauty.

The present invention comprises a transparent or translucent central layer and coating layers laminated on both sides of the central layer, and at least one of the coating layers is transparent or translucent.

Examples of the translucent board material used as the center layer include polystyrene, polyacrylate, polymethacrylate, polycarbonate, polyester, polyvinyl chloride, nylon, cellulose, etc., and can be appropriately selected from commercially available materials. , a laminate of these can also be used. In addition to these materials, any transparent or translucent material that can be printed and has adhesive properties can be used.

The center layer may be semi-transparent, but the pattern on the opposite side must be recognizable when viewed through the covering layer, and is preferably as transparent as possible, with a light transmittance of 15% or more, preferably 70% or more. can be suitably used.

The thickness of the center layer may be appropriately determined depending on the intended use, but a thickness of approximately 0.5 to 5III+ is suitable for use in windows, partitions, etc. If it is too thin, the strength will not be sufficient and the two images will be too close, resulting in poor change. If it is too thick, the images will be too far apart, resulting in a lack of unity, and the total thickness of the laminate will be too large, limiting its uses. be done.

The coating layer is provided to protect the print from peeling off and damage to the surface. Materials used for the coating layer include polystyrene, polyacrylate, polymethacrylate, polycarbonate, polyester, polyvinyl chloride, nylon, cellulose, etc., and can be appropriately selected from commercially available materials. Any materials other than these that can be printed and have adhesive properties can be used.

At least one of the coating layers used in the present invention needs to be transparent or translucent.

When the coating layer is semitransparent, it is desirable that the coating layer be translucent enough to clearly see the pattern on the back side.

Therefore, this transparency also depends on the thickness of the coating layer.

By making the coating layer, for example, white and translucent, it is possible to create the feel of a shoji screen. That is, the pattern on the back side of the white opaque thin coating layer is clearly visible, and the same pattern on the opposite side of the center layer is visible very clearly, and the three-dimensional effect of the present invention is exhibited and the decorative effect is exhibited. However, objects or people on opposite sides of the laminated board of the present invention cannot be seen from each other because they are blocked by the two translucent coating layers, so it is useful as a patterned translucent shielding panel in place of conventional ground glass. be.

Furthermore, making one of the coating layers transparent and the other coating layer opaque gives a different aesthetic appearance when viewed from the transparent side, and is suitable for decorative screen panels and the like.

The thickness of the coating layer of the present invention can be selected as appropriate depending on the application.
A thickness of about 0 μm to 1 mm is suitable.

If the coating layer of the present invention is too thin, it will be difficult to print or coat; if it is too thick, the opposite side will not be visible if it is translucent, and the physical properties of the central layer will be impaired.

Further, although a colorless film is usually used as the coating layer, films colored in various colors can also be used depending on the case.

In the present invention, the position where the design is applied can be determined as appropriate, but is preferably between the center layer and the covering layer. In particular, this means applying either to the surface of the central layer or to the surface of the covering layer or to sandwiching a thin printed film between the two layers.

In effect, no matter which surface the design is placed on, the design appears to exist between the layers.

In the end, two patterns, one positive and one negative, are placed on the front and back sides of the center layer. In the case where there is one cover layer on each side, when a positive design is applied to the inner surface of the cover layer, a negative design is applied to the center layer or the inside of the cover layer. When applied to the center layer, it is sufficient to apply two designs in the same direction, but when applied to the opposite covering layer, it is necessary to apply a positive design and a symmetrical negative design.

Moreover, one or more auxiliary layers can be further laminated outside the basic central layer and inside the covering layer. In this case, the laminate of the basic center layer and the auxiliary layer between the two patterns corresponds to the center layer of the present invention. For example, the front coating layer (
The pattern ■ (positive image) is printed on the inside) / Basic center layer /
Auxiliary layer (design (negative) is printed on the covering layer side) /
It can be a backside covering layer, in which case the pattern ■,■
It is only necessary to print a pattern in the same direction for both.

The printed surface may be exposed to the outside, but if the surface becomes dirty during use, the printing may come off by wiping it, so it is preferable that the outer surface has a coating layer.

In the present invention, printing on each layer or on the surface of the laminated printing film can be carried out by conventionally known methods. Examples include methods using gravure printing, screen printing, spreader roll spray-up, and the like. The design is photographed and a positive is taken from the negative.

Then, each version is created. Then, a positive print is made from the negative, and a negative print is made from the positive.

In this case, printing can be done with transparent, translucent or opaque ink.

Further, it is also possible to add an ultraviolet absorber to the printing ink.

The cover layer is adhered to the center layer by heat sealing or adhesive.

The conditions for thermal fusion will vary depending on the resin material used, but each can be carried out under normal conditions. polystyrene,
For polymethacrylate, 180 to 210°C, 3
It may be pressed with a hot roll at 0 to 50 kg/cm"・G.

As the adhesive, all commonly used adhesives such as acrylic adhesives and epoxy adhesives can be used.

In the present invention, various designs can be applied to the laminated board materials, such as photographs, patterns, designed figures, pictures, and designs made of letters.Among these, designs with clear outlines are suitable. preferable. The designs used are those that are exactly the same on the front and back, and have a relationship between positive and negative images, but it may be preferable to change the colors of the two designs depending on the situation.

The symbols do not necessarily have to be in the same position; they can be shifted laterally or rotated at an appropriate angle of 180' and overlapped.

[Effects of the Invention] In the laminated board material of the present invention, ink is uniformly applied to almost the entire surface of each positive image and negative image, so when viewed from the front, there is no transparent area, and the average amount of light passes through the entire surface. When the colors of the positive and negative images are changed, one pattern, such as a human figure, can be seen as a background, which is effective.

The laminated board material of the present invention is beautiful to look at, and since positive and negative images of the same design are applied at intervals, it gives a three-dimensional feel, and when the viewer is moving, The pattern shifts slightly, giving the illusion of movement, making it an extremely novel decorative material, making it extremely useful for windows, bathroom doors, screens, partitions, lighting fixtures, etc. .

In addition, in combination with a semi-transparent coating layer, a double pattern with a luxurious and dark tone background can be seen, making it possible to create a laminated board material suitable for screen panels, etc., and can be used for a wide range of purposes. There are advantages.

[Examples] The present invention will be explained in more detail with reference to Examples, but the present invention is not limited to these examples.

Example 1~? Laminated board materials of the present invention were manufactured using a center layer and a cover layer made of various materials.

A pattern was printed on each cover layer, auxiliary layer, or center layer by screen printing. The pattern was created and printed as follows.

First, a photograph of the design to be printed was taken, a negative film was made of it, and then the negative film was reversed to create a positive film. Next, a positive plate for printing was made from the negative film, and a negative plate was made from the positive film.

Subsequently, a pattern was printed on the inside of the front cover layer in one color using a positive printing plate. In addition, using a negative printing plate, a pattern was printed in the same or different color as the positive printing on the center layer or the center layer side of the backside coating layer.

At this time, the original printing plate must be created so that the orientation of the design matches each other when the laminated boards are stacked.

Only in Example 10, a printing original plate was prepared in which the negative image was rotated by 90c with respect to the positive image.

Each printed layer was glued to form a laminated board with the design aligned as intended.

Table 1 shows the results.

(Margin below)

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing how the three basic layers constituting the laminated plate material according to the embodiment of the present invention are stacked, and FIG. 2 is a perspective view of the laminated plate material according to the same embodiment of the present invention. The symbols in the figure are 1: center layer, 2: front coating layer, and 3: back coating layer.

Claims (1)

[Scope of Claims] 1. A laminate plate material comprising a transparent or translucent center layer and coating layers laminated on both sides thereof, wherein at least one of the coating layers is transparent or translucent, and the center layer is not included. A positive printing plate and a negative printing plate are created from one original on a laminated board material with designs printed on both sides of the sandwich, and the pattern printed with the positive printing plate is applied to one side of the center layer, and the pattern printed on the other side of the center layer is A laminated board material characterized by a design printed using a negative plate. 2. A laminated board material consisting of a transparent or translucent center layer and a covering layer laminated on both sides, at least one of which is transparent or translucent, and with a pattern on both sides of the center layer. In the manufacturing method, a positive plate and a negative plate for printing are created from one original image, and a pattern printed with the positive plate is applied to one side of the center layer, and a pattern printed with the negative plate is applied to the other side of the center layer. A method for manufacturing a laminated board material, characterized in that it is subjected to.