JPS61254334A - Manufacture for laminating type embossed adhesive sheet - Google Patents

Abstract

PURPOSE:To manufacture a laminating type embossed adhesive sheet without the formation of bubbles by a method wherein, before the laminating film is stuck by polymerization on the filler layer, the recessed parts among the numerous protrusions to be formed on the surface of the embossed adhesive sheet are filled with a transparent fluid filler and a pretreatment is performed on the filler layer in such a way that the upper surface thereof becomes at least even with the top surfaces of these protrusions. CONSTITUTION:Recessed parts 1c among numerous embossed protrusions 1b to be formed on the surface of an embossed base material sheet 1 to be performed an embossing finish are filled with a transparent fluid filler and a filling treatment is performed on a filler layer 5 in such a way that the upper surface thereof becomes at least even with the top surfaces of these protrusions 1b. After the filler layer 5 is formed in advance on the surface of the embossed base material sheet 1 in such a way, a transparent laminating film 7 with the back surface, whereon a transparent laminating adhesive coating layer 6 is performed in advance, is stuck by polymerization on the upper surface of the filler layer 5.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for producing a laminated embossed adhesive seed laminated with a laminating film whose surface is completely transparent. An embossed adhesive sheet having a releasable sheet 7 and a large number of protrusions on its surface has an embossed surface. Ninth, to prevent the decorative effect of the embossing from deteriorating due to exposure to external suburban environments, as shown in the first figure, an adhesive layer is provided on the back surface of the embossing base sheet a, and a releasable sheet 0 is provided. Production of a laminated embossed adhesive sheet in which a transparent laminating film 0, which has been previously coated with a transparent adhesive B on the back side, is polymerized and adhered to the embossed surface of the embossed adhesive sheet to protect the embossed surface from the external environment. The law is known.

(Problems to be Solved by the Invention) In the conventional manufacturing method of the above laminated embossed adhesive sheet, when the laminate adhesive film is polymerized and adhered to the embossed surface of the embossed adhesive sheet, the back side of the laminate film The adhesive coating layer B is formed between the numerous protrusions a on the embossed surface, and it is difficult to sufficiently polymerize and adhere to the shape of the nine concave portions, and air is often trapped between them and bubbles are formed. As a result, when you look at the embossed surface through the laminated film, you can see air bubbles here and there, which shows the embossed decorative effect.
s [1] There is a problem that it becomes a product with a negative impact.

(Means for Solving the Problems) The present invention solves the disadvantages of the above-mentioned conventional manufacturing method,
We provide a method for manufacturing a laminated embossed adhesive sheet that ensures the production of high-quality products.The embossed adhesive sheet has an adhesive coating on the back side and numerous protrusions on the surface, and a transparent laminate film is applied to the surface of the embossed adhesive sheet. In the method for producing a polymerized laminated embossed adhesive sheet, before the laminating film is polymerized and adhered, a fluid transparent filler is added to the surface of the embossed adhesive sheet to fill the spaces between its many protrusions. The method is characterized in that the recesses are filled and a pretreatment is performed so that the upper surface of the filler layer is at least substantially flush with the top surfaces of these protrusions.

(Example) Figures 2 and 6 show an example of implementing the present invention.0(1) is made of a transparent synthetic resin material such as polyethylene terephthalate or vinyl chloride, with a metal vapor deposited layer (1a) provided on the back surface in advance. from g
D and embossed embossed substrate sheet la are shown.

(1b) is a large number of embossed protrusions formed on its surface;
('o)id It shows the concavities between these numerous protrusions (1b). On the back side of this embossed base material sheet) tll, that is, on the back side of the metal vapor deposited layer (1 &), an adhesive coating layer t2 is applied by a conventional method.
3 and a removable sheet that protects its outer surface)
Printing (not shown) such as a design is applied, thus producing an embossed adhesive sheet (4). In order to protect the gold on the embossed surface of the embossed adhesive sheet (4J), the present invention is a laminated type adhesive embossed sheet in which a transparent laminate film is fully polymerized and adhered to the surface as described later. , as shown in the second figure, the embossed surface is filled with a fluid transparent filler.
b) Fill the recesses (IQ)'e between the filler layers (5) and perform the filling process so that the upper surface of the filler layer (5) is at least flush with the top surfaces of the projections (1b). In the illustrated example, the filler layer (
5) was formed so that its upper surface was one continuous surface (5a) that slightly covered the top surfaces of these protrusions (1b).

The transparent filler is mainly made of transparent synthetic resin such as acrylic resin, vinyl chloride resin, polyester resin, etc., and its viscosity is reduced to a fluidity of 100 to 200'00PS by means of organic solvent, aqueous emulsion, heat melting, etc. It is preferable to apply and fill the embossed surface as a certain filler, and when using such a fluid filler, its fluidity allows it to be filled without leaving any air in the recess (1G). A filling layer (5) is formed that completely adheres to the concave shape. If it is less than 1.o o ops, it will flow easily and the concave part cannot be filled sufficiently, and 200 ops'
When it exceeds t, the fluidity is poor and bubbles tend to remain in the recess even after filling. Organic solvent or aqueous emulsion types are then heated and dried.

After the filler layer (5) has been previously formed on the embossed surface, as shown in Figure 3, a transparent laminate adhesive layer (6) is coated on the back side in advance, as in the conventional method. A laminating film (7) is polymerized and adhered to the upper surface of the filler layer (5). In such a case, the embossed surface of the embossed base sheet (1) is different from the conventional one and is formed into a flat surface by filling with the filler in advance, so that no air bubbles remain and the embossed surface can be used as a laminating film. (polymerized paste of 71, i
A laminated embossed pressure-sensitive adhesive sheet product of good quality without trapping air bubbles, that is, the embossing effect is not inhibited at all, can be obtained.

Figure 4 shows that the filler of the present invention is prepared by mixing an acrylic adhesive or the like to have adhesive properties, and the filler is significantly higher than the protrusions (1b) on the embossed surface and has a relatively thick wall. For example, a thick filler layer (5 ml) is filled and coated to a thickness approximately equivalent to the thickness of the laminated adhesive layer described above.
) When forming the entire product, the product can be obtained by directly polymerizing and pasting the laminating film (7) on the top surface, and the need to form a laminating adhesive coating layer on the back side of the laminating film (7) can be omitted. As shown in FIG. 5, the upper surface of the filler layer (5) does not need to be a completely flat surface; Even if the upper surface of the filler layer (5) in the recess (1C) is slightly lower than the top surface of the protrusion (1b), the flexibility of the laminating film (7) and its The flexibility of the laminate adhesive coating on the back allows for close-contact polymerization with the exclusion of air.

According to the present invention, when a laminating film is polymerized and adhered to the surface of an embossed adhesive sheet,
Since the filler was filled in advance into the recesses between the protrusions on the embossed surface so that the filler was at least approximately flush with the top surface of the protrusions, the laminating film was placed on the upper surface of the embossed adhesive sheet. This has the effect that a good laminated embossed adhesive sheet can be manufactured without trapping air during adhesion, that is, without generating bubbles.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional laminated embossed adhesive sheet, and FIGS. 2 and 3 are cross-sectional views of the present invention.
Cross-sectional view of an example of a method for manufacturing an M-embossed adhesive sheet, No. 4
The figure is a cross-sectional view of a product produced by a modified manufacturing method, and FIG. 5 is a cross-sectional diagram of a modified manufacturing method.
・Metal deposition layer (1b)...Protrusion (1C)
... Concave part (2) ... Adhesive coating layer (
4)... Embossed adhesive sheet (5)... Filler layer
(6)... Laminating adhesive coating layer (7)...
・Two people outside the laminating film Figure 1 Figure 2 i) 4 Figure 4 Figure 5

Claims (1)

[Claims] 1. In a method for manufacturing a laminated embossed adhesive sheet, in which a transparent laminate film is polymerized and adhered to the surface of an embossed adhesive sheet having an adhesive coating layer on the back side and a large number of protrusions on the surface, the laminating film is polymerized. Before pasting, the surface of the embossed adhesive sheet is filled with a fluid transparent filler in the recesses between the many protrusions, so that the upper surface of the filler layer is at least approximately the same as the top surface of these protrusions. A method for producing a laminated embossed adhesive sheet, which is characterized by performing preliminary treatment to make it flat.