JPH075814A - Tacky adhesive sheet for decoration - Google Patents

Abstract

PURPOSE:To provide the tacky adhesive sheet for decoration which has the less permanent set in winding when developed horizontally from a rolled state and is easily placed flat and has excellent blanking capability even at the time of blanking a marking layer with a cutting machine of a flat type. CONSTITUTION:This tacky adhesive sheet 2 for decoration has a release backing paper and is formed by providing this release backing paper with a tacky adhesive 4 layer and a marking layer 5 consisting of a base material 3 layer for marking in this order thereon. The release backing paper is release paper 6 obtd. by extrusion-laminating a polyethylene resin on paper having <=100g/cm<2> basis weight and subjecting one or both surfaces thereof to a release treatment. The base material 3 of the marking layer 5 is a soft vinyl chloride resin sheet obtd. by compounding >=24pts.wt. plasticizer with 100 pts.wt. polyvinyl chloride resin and molding the compound.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative pressure-sensitive adhesive sheet having less curl, easy stamping of a marking layer and good workability.

[0002]

2. Description of the Related Art A decorative pressure-sensitive adhesive sheet has a three-layer structure including a releasable mount layer, a pressure-sensitive adhesive layer, and a base layer for marking which is colored as desired. At this time, the marking layer (the marking base layer and the adhesive layer with the desired coloring, etc.) is punched into a desired shape by a machine (cutting machine) or by hand cutting, and unnecessary parts are removed. After applying the application sheet with a weak adhesive layer on the marking layer, transfer the marking layer from the releasable backing sheet to the application sheet and attach it to the adherend, and then apply the application sheet. The work method of peeling and removing only is adopted.

Among the decorative pressure-sensitive adhesive sheets, a decorative pressure-sensitive adhesive sheet for indoor or outdoor use is generally a release paper layer (130 to 180 μm) -adhesive layer (15 to 30 μm).
-A base material layer (50-
150 μm) three-layer structure, for example, width 460 mm
× It is commercialized as a roll with a length of 10 m.

However, the above-mentioned indoor or outdoor short-term decorative pressure-sensitive adhesive sheet has a curling tendency when it is in a rolled state, and the curling tendency is not eliminated even when it is spread horizontally during use, and the marking layer is punched out. Processing tends to be hindered. In particular, when punching with a flat type cutting machine, it is necessary to put the plate flat once, but if the winding tendency is strong, it becomes difficult to put it flat and the suitability for punching becomes poor.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, the present invention has less curling habit when horizontally rolled from a rolled state, and when punching a marking layer with a flat type cutting machine. However, it is an object of the present invention to provide a decorative pressure-sensitive adhesive sheet that can be easily placed flat and has excellent suitability for punching.

[0006]

The decorative pressure-sensitive adhesive sheet with less curl of the present invention is obtained by extruding and laminating a polyethylene resin as an anchor coat on a paper having a basis weight of 100 g / m ² or less, and releasing agent on one or both sides thereof. A soft vinyl chloride-based resin sheet obtained by applying the above-mentioned release paper as a release liner, and by mixing 24 parts by weight or more of a plasticizer with 100 parts by weight of a polyvinyl chloride-based resin and molding the mixture. Is used as the base material of the marking layer.

The release paper used as the release liner for the decorative pressure-sensitive adhesive sheet of the present invention is a polyethylene resin extruded as an anchor coat on paper having a basis weight of 100 g / m ² or less (kraft paper, glassine paper, high-quality paper, etc.). It is obtained by laminating and coating a release agent on one or both sides.

The basis weight of the paper used for the release paper is 10
It must be 0 g / m ² or less, and the basis weight of the paper is 1
When it is more than 00 g / m ² , the obtained release paper becomes too stiff and the curling habit improving effect cannot be obtained.

The thickness of the polyethylene resin extruded and laminated as an anchor coat on paper is not particularly limited, but is preferably about 15 to 30 μm on one side.

The release agent coated on one side or both sides of the release paper is not particularly limited, and examples thereof include silicon-based or long-chain alkyl group-containing compounds.
Generally, a silicon-based material is preferably used. The coating amount of the silicone-based release agent is 0.3 to 1.0 g / solid side on one side.
About m ² is preferable.

The pressure-sensitive adhesive used as the pressure-sensitive adhesive layer in the decorative pressure-sensitive adhesive sheet of the present invention is not particularly limited, and ordinary rubber-based solvent-based or emulsion-based pressure-sensitive adhesives, acrylic solvent-based or emulsion-based pressure-sensitive adhesives, etc. However, an acrylic adhesive having good weather resistance is preferable.

The soft vinyl chloride resin sheet used as a substrate for the marking layer of the decorative pressure-sensitive adhesive sheet of the present invention is 24 parts with respect to 100 parts by weight of polyvinyl chloride resin.
Calender molding a plastisol or organosol dispersion or solution of polyvinyl chloride resin in which a plasticizer of more than parts by weight, a pigment, a stabilizer, and an organic solvent, if necessary, is mixed,
By extrusion molding, casting, etc., thickness 50-150 μm
It is obtained by molding into a sheet shape.

The plasticizer used for the base material is not particularly limited, but phthalate ester plasticizers such as dibutyl phthalate and dioctyl phthalate and polyester plasticizers are preferably used.

In the above base material, the polyvinyl chloride resin 10 is used.
It is necessary to add 24 parts by weight or more of the plasticizer to 0 part by weight. If the amount of the plasticizer is less than 24 parts by weight, the base material becomes too hard and the curling habit improving effect is poor. Become.

[0015]

The decorative pressure-sensitive adhesive sheet obtained by the present invention is used as a release liner, and a polyethylene resin is extruded and laminated as an anchor coat on a paper having a basis weight of 100 g / m ² or less, and a release agent is coated on one side or both sides. A soft vinyl chloride resin sheet obtained by using the release paper obtained as described above and molding 24 parts by weight or more of a plasticizer with 100 parts by weight of polyvinyl chloride resin as a base material of the marking layer and molding the mixture. Since it is used, the curling tendency is small, and even when the marking layer is punched by a flat type cutting machine, it can be easily placed flat and has excellent suitability for punching.

[0016]

EXAMPLES In order to explain the present invention in more detail, examples will be given below. In the examples, "part" is "part by weight".
Means

(Examples 1 to 3, Comparative Examples 1 and 2)

( 1) Preparation of release paper As shown in Table 1, polyethylene resin is applied to both sides of a kraft paper having a basis weight of 65 to 135 g / m ² with 20 μm on one side.
The release paper was obtained by applying a silicone-based release agent in a solid content of 0.7 g / m ² on one side of the extrusion-laminated sheet having a thickness of 3 to perform release treatment.

( 2) Evaluation As shown in FIG. 1, the obtained release paper 6 was wrapped around a paper tube 1 having an outer diameter of 2 inches, stored at 40 ° C. for 3 days, and then at 10 ° C.
After left at each temperature of 20 ° C and 30 ° C for 1 hour, at each temperature, the paper tube 1 is horizontally spread with a length of 1 m and placed flatly for 5 hours.
The curl height (mm) 7 at each temperature after the measurement was measured. The results are as shown in Table 1.

[0020]

[Table 1]

As shown in Table 1, in the release papers 6 of Examples 1 to 3, the curl height 7 also decreases as the basis weight of the paper decreases. On the other hand, the release papers 6 of Comparative Examples 1 and 2 were naturally unwound after being spread horizontally, and the curl height 7 could not be measured.

(Examples 4 to 7, Comparative Examples 3 to 5)

( 1) Preparation of Base Material As shown in Table 2, the compounding amount of the plasticizer (dioctyl phthalate) is 12 to 100 parts of the polyvinyl chloride resin.
A plastisol dispersion having a composition of 8 parts of red pigment, 2 parts of stabilizer, etc. was variously molded in a range of 36 parts by a calender method to obtain a base material 3 of a soft vinyl chloride resin sheet having a thickness of 90 μm. .

( 2) Evaluation The curl height 7 of the obtained substrate 3 was measured by the same method as in Example 1 and the results are shown in Table 2.

[0025]

[Table 2]

As shown in Table 2, the curl height 7 of the base material 3 of Examples 4 to 7 is as good as 1.3 mm or less. On the other hand, the curl height 7 of the base material 3 of Comparative Examples 3 to 5 is 3.
It was 3 mm or more.

(Embodiment 8)

( 1) Preparation of Release Paper Release paper 6 was obtained in the same manner as in Example 1 using kraft paper having a basis weight of 100 g / m ² .

( 2) Preparation of base material A flexible vinyl chloride resin sheet having a thickness of 70 μm was prepared in the same manner as in Example 4, except that the compounding amount of the plasticizer (dioctyl phthalate) was 24 parts with respect to 100 parts of the polyvinyl chloride resin. Then, the base material 3 was obtained.

( 3) Preparation of decorative pressure-sensitive adhesive sheet An acrylic solvent-based pressure-sensitive adhesive (30% solid content) was coated on one surface of the obtained release paper 6 so that the coating thickness of the solid content was 23 μm. Then, the obtained base material 3 is attached to form a decorative pressure-sensitive adhesive sheet 2, and a paper tube 1 having an outer diameter of 2 inches and 3 inches is produced.
It was wound on a roll to obtain a roll having a width of 460 mm and a length of 10 m.

( 4) Evaluation The obtained roll was stored at 50 ° C. for 1 week and then taken out, 2
After leaving at 0 ° C. for 1 hour, at that temperature, as shown in FIG. 2, with the release paper 6 on top, the paper tube 1 was horizontally spread with a length of 1 m and placed flat for 5 minutes. The curl height (curl height A) 7 was measured. In addition, as shown in FIG. 3, with the base material 3 facing upward, the paper core 1 is horizontally developed with a length of 1 m and placed flat for 5 minutes and the curl height (curl height B) 7 Was also measured by the same method. The results are shown in Table 3.

(Comparative Example 6)

In the production of the release paper 6, a scroll of the decorative pressure-sensitive adhesive sheet 2 was obtained in the same manner as in Example 8 except that the basis weight of the kraft paper was 120 g / m ² .

The curl heights (curl heights A and B) 7 of the obtained decorative pressure-sensitive adhesive sheet 2 were measured in the same manner as in Example 8 and the results are shown in Table 3.

(Comparative Example 7)

In the preparation of the base material 3, a plasticizer (dioctyl phthalate) is added to 100 parts of polyvinyl chloride resin.
A scroll of the decorative pressure-sensitive adhesive sheet 2 was obtained in the same manner as in Example 8 except that the compounding amount was 20 parts.

The curl heights (curl heights A and B) 7 of the obtained decorative pressure-sensitive adhesive sheet 2 were measured in the same manner as in Example 8 and the results are shown in Table 3.

[0038]

[Table 3]

As shown in Table 3, the curl height 7 of the decorative pressure-sensitive adhesive sheet 2 of Example 8 obtained by the present invention is lower than that of Comparative Examples 6 and 7 outside the present invention. , A curling habit improving effect is recognized. It is also recognized that the larger the outer diameter of the paper tube 1 is, the lower the curl height 7 is.

When the decorative pressure-sensitive adhesive sheet 2 is actually used, the developing method is carried out with the base material 3 facing up as shown in FIG. 3, but the outer diameter in Example 8 shown in Table 3 is used. As a result of the curl height 7 (curl height B) 7 when the 3-inch paper tube 1 is used, the level of 5 mm is no problem even when the marking layer 5 is punched by a flat type cutting machine. Is.

[0041]

As described above, since the decorative pressure-sensitive adhesive sheet according to the present invention has a significantly improved curling habit, even when the marking layer is punched with a flat type cutting machine, it can be placed flat without any trouble. It is capable of punching and has excellent suitability for punching.

[0042]

[Brief description of drawings]

FIG. 1 is a front view when a release paper or a base material is horizontally developed with a length of 1 m from a paper tube.

FIG. 2 is a front view of the decorative pressure-sensitive adhesive sheet with the release paper on the top and when it is horizontally developed at a length of 1 m from the paper tube.

FIG. 3 is a front view of the decorative pressure-sensitive adhesive sheet, with the base material facing upward, when the pressure-sensitive adhesive sheet is horizontally developed at a length of 1 m from the paper tube.

[Explanation of symbols]

 1 Paper Tube 2 Adhesive Sheet for Decoration 3 Base Material 4 Adhesive 5 Marking Layer 6 Release Paper 7 Curling Height (mm) 8 Support

Claims (1)

[Claims] 1. A decorative pressure-sensitive adhesive sheet comprising a release liner and a marking layer comprising a pressure-sensitive adhesive layer and a base material layer for marking provided on the release liner in this order. Is a release paper obtained by extruding and laminating a polyethylene resin on a paper having a basis weight of 100 g / m ² or less, and applying a release agent on one or both surfaces thereof, wherein the base material of the marking layer is
Plasticizer 24 per 100 parts by weight of polyvinyl chloride resin
A decorative pressure-sensitive adhesive sheet, characterized in that it is a soft vinyl chloride resin sheet obtained by blending parts by weight or more and molding.