JPH04370178A - Method for applying sheet, label or the like - Google Patents

Abstract

PURPOSE:To readily and firmly apply a sheet, a label, etc., to an adherend at a low cost by peeling release paper on the substrate surface, exposing a pressure-sensitive adhesive layer, coating the top surface of the above-mentioned layer with an organic solvent and then applying the sheet, label, etc., to the adherend. CONSTITUTION:Release paper on the side of a pressure-sensitive adhesive layer 3 composed of an acrylic or a rubber-based resin, etc., of a substrate 1 such as a sheet or a label is peeled to expose the pressure-sensitive adhesive layer. The top surface of the aforementioned adhesive layer 3 is then coated with an organic solvent 5 composed of methyl ethyl ketone, acetone, ethyl acetate, toluene, xylene, isopropanol, methanol, ethanol, etc., into the form of a thin film. The resultant substrate 1 is subsequently applied to a prescribed part of an adherend 6.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates primarily to a method for attaching seat number labels for vehicles such as Shinkansen trains and wallpaper sheets for building construction.

0002

[Prior Art] In general, fluorine-based resins and silicone-based resins have been widely used in recent years because they are difficult to stain or can be easily removed even if they become dirty. Paste sheets, labels, etc. on adherends such as textured wallpaper, boards, films, or plastics, as well as wallpapers, boards, films, plastics, metal plates, etc. that have finely textured surfaces. When applying adhesives, expensive silicone adhesives were used.

[0003] However, the adhesion of pressure-sensitive adhesive labels to the surface of the adherend is weak, or the adhesion is weak and impractical unless a silicone adhesive is used. It has been difficult to attach labels, etc. to such devices except by using silicone adhesives due to their weak adhesion. Furthermore, silicone adhesives have the disadvantage that they are expensive and the labels themselves are expensive.

0004

[Problems to be Solved by the Invention] The problems to be solved are adherends to which adhesive sheets, labels, etc. are difficult to attach, that is, adherends to which the adhesion of adhesive labels becomes weak, or silicone. Adhesion of sheet-like labels with pressure-sensitive adhesives to the surface of the adherend is impractical due to weak adhesion unless a silicone-based adhesive is used. We proposed a method for attaching the adherend easily and with strong adhesion without using expensive adhesives such as silicone adhesives, which was difficult to do except by using adhesives. be.

[0005]

[Means for Solving the Problems] The present invention provides a process for peeling off the release paper on the side of the pressure-sensitive adhesive layer of a sheet, label base material, etc. to expose the pressure-sensitive adhesive layer. The above-mentioned pressure-sensitive adhesive layer, which is commonly used at present, is one in which a suitable organic solvent is coated in a thin film form on the upper surface of the adhesive layer, and then it is attached to a predetermined location on the adherend. A pressure-sensitive adhesive made of acrylic resin or rubber resin that can be swelled with an appropriate organic solvent is used to reduce costs. Examples of the organic solvent used include MEK (ethyl methyl ketone), acetone, ethyl acetate, toluene, xylene, isopropylene alcohol (IPA), methanol, and ethanol. -It is applied in a thin film using a paint brush or a brush. Therefore, when the pressure-sensitive adhesive is swollen and then applied, the adhesion can be improved more than when the pressure-sensitive adhesive is not swollen with an organic solvent. Among them, MEK (ethyl methyl ketone) is particularly suitable.

[0006]

[Embodiment] Next, a first embodiment of the present invention will be described with reference to FIG. 1 is a label base material such as plastic, on the top surface of which a printing layer 2 is applied, and on the back surface of the label base material 1 is Nitto Denko's No. 1 as a pressure-sensitive adhesive layer 3. 500
Attach double-sided adhesive tape and place release paper 4 on the opposite side.
is attached in advance. When pasting to a predetermined location on an adherend, the release paper 4 on the pressure-sensitive adhesive layer 3 side of the label base material 1 is peeled off to expose the pressure-sensitive adhesive layer 3, and then the pressure-sensitive adhesive layer 3 is exposed. A thin film of MEK (methyl ethyl ketone) as an appropriate organic solvent 5 is applied to the upper surface of the adhesive layer 3 and swollen, and then applied to a predetermined location on a Hitachi Chemical fluor sheet as an adherend 6. Affix it. Two days after adhesion, the adhesive strength was measured using a Schopper tensile strength tester and the following results were obtained.

[0007] Paste after swelling with MEK...1500grf
/Attachment without using 25mm MEK...40
0grf/25mm

Next, a second embodiment of the present invention will be explained with reference to FIG. Reference numeral 1 denotes a label base material such as plastics, on the top surface of which a printing layer 2 is applied, and further on the top surface thereof a laminate film layer 2A is applied. On the back side of the label base material 1, Nitto Denko's No. A double-sided adhesive tape of No. 500 was attached, and a release paper 4 was attached in advance to the opposite side of the tape. When pasting to a predetermined location on an adherend, the release paper 4 on the pressure-sensitive adhesive layer 3 side of the label base material 1 is peeled off to expose the pressure-sensitive adhesive layer 3, and then the pressure-sensitive adhesive layer 3 is exposed. A thin film of MEK as a suitable organic solvent 5 is applied to the upper surface of the adhesive layer 3 and swollen, and then attached to a predetermined location on a Hitachi Chemical fluor sheet as an adherend 6. . Two days after pasting, the adhesive strength was measured using a Schopper tensile strength tester, and the results were the same as in Example 1 above.

[0009]

Effects of the Invention As explained above, the present invention can be applied to wallpapers, boards, films, or plastics coated with fluorocarbon resin or silicone resin, and furthermore, the surface of the wallpaper can be coated with a finely textured pattern. When attaching sheets, labels, etc. to adherends such as wallpaper, boards, films, plastics, and metal plates, you can easily and strongly adhere them without using expensive silicone adhesives. It has the effect of being able to be attached with force.

[Brief explanation of the drawing]

FIG. 1 is a partially vertical perspective view showing the label structure of a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional front view showing the label structure of a second embodiment of the present invention.

[Explanation of symbols]

1...Label base material 3...Pressure sensitive adhesive layer 4...Release paper 5...Organic solvent 6...Adherend

Claims (2)

[Claims] 1. After peeling off the release paper 4 on the side of the pressure-sensitive adhesive layer 3 of the sheet, label base material 1, etc. to expose the pressure-sensitive adhesive layer 3, Appropriate organic solvent 5 on the top surface
A method for attaching sheets, labels, etc., by applying a thin film of 2. The method for pasting sheets, labels, etc. according to claim 1, wherein the pressure-sensitive adhesive layer 3 is made of an acrylic or rubber resin that can be swelled with a suitable organic solvent 5. 3
The seal according to claim 1 or 2, wherein MEK (ethyl methyl ketone), acetone, ethyl acetate, toluene, xylene, isopropylene alcohol (IPA), methanol, ethanol, etc. are used as the organic solvent 5. How to attach labels, etc.