JPH02210387A - Partial peeling method for sheet-like object - Google Patents

Abstract

PURPOSE:To selectively eliminate an unnecessary part by activating an adhesive agent by heating and sticking an unnecessary part of an adhesive sheet to a peeling use sheet and peeling it off from peeling paper together with the peeling use sheet. CONSTITUTION:Peeling paper 4 is laminated on the surface of an adhesive mass layer 2 of an adhesive sheet A provided with the adhesive mass layer 2 on the surface of a base material 1, and the adhesive sheet A is cut into a desired shape at a cut line 3. Subsequently, a molten thermoweldable adhesive agent 5 is applied onto the surface of the base material of an unnecessary part 13, cooled and solidified, and thereafter, the applied surface is covered with a peeling use sheet 6, and the applied surface is heated and pressed by a heat roll 7 from the upper face of the peeling use sheet 6. Accordingly, the thermoweldable adhesive agent 5 is melted, and when it is cooled and solidified, the peeling use sheet 6 and the unnecessary part 13 are stuck. When the peeling use sheet 6 is removed after this thermoweldable adhesive agent 5 is cooled and solidified, the unnecessary part 13 is separated from the surface of the peeling paper 4. In such a way, the unnecessary part can be eliminated selectively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for peeling unnecessary parts other than the characters and figures from a release paper when cutting out characters and figures from an adhesive sheet.

[Prior art]

Recently, instead of drawing letters and figures with paint for display and decoration, it has become possible to cut out letters and figures from adhesive sheets coated with adhesive on the surface of plastic films such as vinyl chloride, and paste them in the desired locations. It's been done. .

This method involves removing unnecessary portions of the adhesive sheet other than letters and figures from the release paper, and then covering the letters and figures left on the liner with an applicator/young film. Transfer characters and shapes to C
This is a method in which the film is applied to a surface to be applied, such as a shop window wall or an automobile body, and then the application film is removed.

By the way, unnecessary parts other than characters and figures are removed from release paper manually. Furthermore, Japanese Patent Application Laid-Open No. 78381/1983 describes that in the case of pasting by pasting and transferring, an auxiliary material is applied to the surface of the main body of the plate, and the side material is used to adhere to the adherend. This involves temporarily gluing the cutout to the board through a glue layer with weak adhesive strength on the mount, and applying paulownia wood, which has stronger adhesive strength than the glue layer, onto the board to attach the cutout. It is.

[Problems to be Solved by the Invention] As mentioned above, manually removing unnecessary portions of the adhesive sheet cut out with characters, figures, etc. from the release paper surface requires a large amount of work and time, and especially when discontinuous parts are removed. This task becomes even more troublesome when there are many independent parts. Also, JP-A-59-78
In the method of manufacturing a cutout and pasting board described in Publication No. 381, the unnecessary cutout portion is already removed, and the remaining cutout and pasting is removed from the board itself! ! This method involves applying paulownia wood for adhesion to a surface, and since it is applied to the entire surface without distinguishing between text and figures and other parts, it cannot be applied as a means for selectively removing unnecessary parts.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks.

[Means to solve the problem]

The gist of the present invention is to laminate a release paper on the adhesive layer surface of an adhesive sheet with an adhesive layer on the back side of the base material, and to cut out unnecessary parts of the adhesive sheet by making cutouts in a desired shape. A molten heat-sealing adhesive is applied to the surface of the base material, and after the heat-sealing adhesive is cooled and solidified, a release sheet is coated in the direction of application, and the unnecessary portion is removed by heating and pressing the release sheet. The present invention relates to a method for partially peeling a sheet-like article, characterized in that the adhesive sheet is adhered to a peeling sheet, and then the peeling sheet is peeled off together with an unnecessary portion of the pressure-sensitive adhesive sheet.

[For production]

The present invention has the above-mentioned configuration, and the adhesive is activated by heating and the unnecessary parts of the adhesive sheet are stuck to the release sheet. ms.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show an example of the sequence of a method for partially peeling a sheet-like article according to the present invention.

In FIG. 1, a release paper 4 is laminated on the second side of the adhesive layer of an adhesive sheet A which has an adhesive layer 2 on the surface of a base material L, and the adhesive sheet A has a cut edge 3 to form characters, figures, etc. Cut into desired shape. Reference numeral 12 is a character or graphic portion having a desired shape, and reference numeral 13 is an unnecessary portion of 4 that should be peeled off. After applying the molten heat-sealing adhesive 5 to the surface of the base material in the unnecessary portion 13 and cooling it to solidify, as shown in FIG. The coating surface is heated and pressed while moving the heat roll 7 in the direction of the arrow. As a result, the heat-sealing adhesive 5 is melted, and when it is cooled and solidified again, the release sheet 6 and the unnecessary portion 13 are adhered. After the heat-fusion adhesive 5 is cooled and solidified, the release sheet 6 is removed as shown in FIG. 3, and the unnecessary portion 13 is separated from the release paper 4.

In order to transfer the graphic portion 12 left on the release paper 4 to an adherend 9 such as a glass window or wall, use an adhesive 2 as shown in FIG.
The adhesive 2 has an adhesive force greater than that of the release paper 42 but smaller than the adhesive force between the adhesive layer 2 and the adherend 9.
The adhesive 2' surface of the transparent transfer sheet 8 coated with
11 is removed and the character or graphic portion 12 is affixed to the adherend 9. When the transfer sheet 8 is removed, the graphic portion 12 is transferred and a desired display/decoration is applied.

The adhesive sheet A used in the present invention is a synthetic resin film or sheet whose base material 1 is appropriately colored, such as vinyl chloride, polypropylene, polyester, etc.

The adhesive layer 2 can be made of a variety of rubber-based adhesives, including natural rubber, synthetic rubber-based rubber-based adhesives, acrylic resin-based adhesives, polyvinyl butyral-based adhesives, etc., as long as they can be pressure-sensitively adhered.

The base polymer of the heat-sealable adhesive applied to the unnecessary portion 13 may be polyethylene, such as polyethylene, ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer, ethylene-isobutyl acrylate copolymer, or styrene. -Butadiene copolymer systems, styrene-imprene copolymer systems, diene systems such as polybutadiene systems and polyisobutylene systems, and acrylic acid ester copolymer systems, which are commonly used. For these base polymers, if necessary, tackifiers such as rosin, hydrogenated rosin, coumaron indene, petroleum hydrocarbon resin, etc.
Plasticizers, softeners, and the like are added and used, but it is desirable that the melting temperature is lower than that of the base material 1.

It is preferable to use materials such as Yves. The heat-sealable adhesive may be applied within the range of the surface of each unnecessary portion 13, and may be applied to at least a portion of each unnecessary portion, and may be applied in dots or stripes.

The release sheet can be a synthetic resin film such as polypropylene, polyester, or nylon, or a nonwoven fabric made of synthetic resin fibers, but it is preferably transparent so that the area to be heated and pressed can be seen through. It is preferable that the adhesive is higher than that of a heat-sealable adhesive.

In order to heat and press the release sheet coated on unnecessary parts from the top surface, as shown in the above example, there is a method of pressing the release sheet from the top surface while rolling with a hot roll. There is a method of blowing hot air from the top surface to melt the heat-sealable adhesive, and then pressing it while rolling a cooling roll. Furthermore, if a thermal head linked with CAD is used, unnecessary parts can be automatically heated and pressed.

[Efficacy of invention Jl! ]

Since the method of the present invention is configured as described above, the unnecessary parts of the adhesive sheet are attached to the release sheet and can be removed all at once, and in particular, discontinuous and independent unnecessary parts can be easily and efficiently removed. This frees you from the hassle of traditional manual work.

[Brief explanation of the drawing]

1 to 3 are partial cross-sectional views showing the steps of an embodiment of the peeling method for a sheet-like object according to the present invention, and FIG. 4 is an explanation of the case where an adhesive sheet cut into a desired shape is transferred. FIG. A: adhesive sheet, l: base material, 12: desired shape portion, 13
: Unnecessary part, 2: Adhesive layer, 4: Release paper, 5: Heat-fusion adhesive, 6: Release sheet.

Claims (1)

[Claims] 1. Laminate release paper on the adhesive layer side of an adhesive sheet with an adhesive layer on the back side of the base material, and cut out incisions in the desired shape on the base material surface of unnecessary parts of the adhesive sheet. A molten heat-sealing adhesive is applied, and after the heat-sealing adhesive is cooled and solidified, the coated surface is covered with a release sheet, and the unnecessary portion is removed by heating and pressing the release sheet. 1. A method for partially peeling a sheet-like article, comprising: adhering the peeling sheet to the adhesive sheet, and then peeling off the peeling sheet together with unnecessary parts of the adhesive sheet.