JPH0423638Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a heat-shrinkable film used for various purposes such as cap seals for wrapping the mouths of pins, packaging of various articles, and decoration.

(Prior art and its problems) Conventional heat-shrinkable films are made by bonding together a heat-shrinkable plastic film and a colored film such as a metal-deposited film with a linear adhesive spaced at a required interval. something is known.

However, this conventional one was all one color, and the color was also monotonous.

This invention provides a heat-shrinkable film that eliminates the above-mentioned drawbacks and can exhibit beautiful decorative patterns with depth and three-dimensionality.

(Means for Solving the Problems) This invention will be explained with reference to the drawings. A heat-shrinkable plastic film 10 and a colored film 20 are bonded together with a linear or dotted adhesive 30 spaced apart from each other by a predetermined distance. This heat-shrinkable film with a three-dimensional pattern is characterized in that the adhesive 30 in the heat-shrinkable film integrated with adhesive is colored in a color different from that of the colored film.

1 and 2 both show one embodiment of this invention, with FIG. 1 being a partially enlarged sectional view showing the state before heat shrinkage and FIG. 2 showing the state after heat shrinkage, respectively.

As the heat-shrinkable plastic film 10, various heat-shrinkable films such as vinyl chloride film and polyethylene film are used. The heat-shrinkable plastic film 10 may be appropriately printed or colored.

The colored film 20 used does not have heat shrinkability or has a heat shrinkability smaller than that of the heat shrinkable plastic film 10. The colored film 20 may be flat or colored coated plastic film such as polyester film with unevenness such as hair lines, plastic film coated with various metals such as Al to form a metal vapor deposited layer, or colored film. Examples include a combination of a coat and a metal vapor deposited layer, or a plastic film itself colored by dyeing or the like. Further, metal foil itself such as Al foil can also be used as a type of colored film of this invention, and in this specification, metal foil is also included in the colored film.

The heat-shrinkable plastic film 10 and the colored film 20 are bonded together using linear or dotted adhesive 30 spaced apart as required. Examples of the linear shape include a parallel linear shape and a lattice linear shape. An example of the dot shape is a parallel dotted line shape.

In this specification, the adhesive 30 includes not only a so-called adhesive but also a pressure-sensitive adhesive.

The adhesive 30 used is colored in a color different from the color of the colored film. The adhesive 30 is colored by an appropriate method such as mixing dye.

In this device, when the colored film 20 is heated and shrunk, the portion of the colored film 20 where the adhesive 30 is not present swells to form a convex portion, as shown in FIG.
The portion where 0 exists becomes a concave portion.

This idea uses heat-shrinkable plastic film 10
It can be used as a cap seal with the side or the colored film 20 side as the inside or outside, or it can be used for packaging and decoration of various articles.

(Example) Thickness on one side of a 12μ thick polyester film
400〓 Al vapor deposited layer was formed, and adhesive colored yellow with dye was used on the Al vapor deposited layer through a protective layer, the line width of the adhesive was 1.5 mm, and the distance between the adhesives was 2.
Adhesive is placed in parallel lines in mm, and the thickness is
A 70μ heat-shrinkable vinyl chloride film was attached.

Next, when the thus obtained product was heat-shrinked, the part of the polyester film on which the metal vapor deposited layer was formed where the adhesive 30 was not present swelled and became a silver-colored convex part, and the part where the adhesive 30 was present was It became a gold-colored depression, and when the two came together, a deep three-dimensional pattern was formed by the unevenness of silver and gold.

(Effects of the invention) This invention uses a colored film and uses a line or dotted adhesive with a color different from that of the colored film as an adhesive, so that the heat-shrinkable plastic film and the colored film can be The color is different between the adhesive part and the non-adhesive part. When heat shrinks, the non-adhesive part becomes a convex part and the bonded part becomes a concave part, so a deep three-dimensional pattern with different colors between the convex part and the concave part is obtained, creating a very unique decoration with a three-dimensional effect. It is something that can be effective.

[Brief explanation of drawings]

1 and 2 both show one embodiment of this invention, with FIG. 1 being a partially enlarged sectional view showing the state before heat shrinkage and FIG. 2 showing the state after heat shrinkage, respectively. 10...Heat-shrinkable plastic film, 20
...Colored film, 30...Adhesive.

Claims (1)

[Scope of utility model registration request] In a heat-shrinkable film in which a heat-shrinkable plastic film and a colored film are bonded together with linear or dotted adhesive at required intervals, the adhesive is colored in a color different from that of the colored film. A heat-shrinkable film with a three-dimensional pattern.