JP2002220574A - Adhesive laminated sheet, method for producing the same and method for transferring adhesive layer using the sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an adhesive laminated sheet with which an adhesive layer laminated between two longitudinally elongated sheets can be left on one sheet, to provide a method for producing the same and a transfer method with which an adhesive layer can be readily and surely transferred to a surface hardly to be transferred and a nonsmooth surface by using the sheet. SOLUTION: This adhesive laminated sheet is obtained by laminating an adhesive layer to coating surfaces of two longitudinally elongated sheets subjected to releasable coating. The adhesive laminated sheet has a difference in degree of releasability between the coating faces of the two sheets. This method for producing the adhesive laminated sheet comprises coating the coating surface of the first sheet subjected to releasable coating with an adhesive solution, drying the first sheet to form the adhesive layer and laminating the second sheet subjected to releasable coating having difference in degree of releasability from that of the first sheet to the first sheet. This method for transferring an adhesive layer comprises releasing two sheets of the adhesive laminated sheets, leaving the adhesive layer on one surface, bringing the adhesive layer into contact with a material to be transferred, pressurizing the material from the back of the sheet and transferring the adhesive layer to the material to be transferred.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pressure-sensitive adhesive laminated sheet, a method for producing the sheet, and a method for transferring a pressure-sensitive adhesive layer using the sheet. More specifically, the present invention provides a pressure-sensitive adhesive laminated sheet that can leave a pressure-sensitive adhesive layer laminated between two long sheets on one long sheet,
The present invention relates to a method for producing the sheet and a transfer method capable of easily and reliably transferring the pressure-sensitive adhesive layer to a difficult-to-transfer surface or a non-smooth surface using the sheet.

[0002]

2. Description of the Related Art Adhesives do not require heat or other help,
It is a material that adheres to other surfaces with a very low pressure such as acupressure, and is widely used in various fields because it is easy to work, does not require drying, and has a short working time. In such applications, there has been a demand for applying a design, letters, numbers, and the like to an uneven surface such as a nonwoven fabric, a net, and an embossed product with an adhesive. In order to apply a pressure-sensitive adhesive to a non-smooth surface, printing of the pressure-sensitive adhesive liquid using a gravure roll or printing using an inkjet printer has been performed. However, since the pressure-sensitive adhesive liquid has a low viscosity, it is easy to cause bleeding when applied to a non-smooth surface, and it is difficult to apply a clear pattern, a character, a numeral, and the like.
Since a step of drying the pressure-sensitive adhesive liquid is indispensable, some materials cannot withstand the drying temperature. For this reason, there has been a demand for a means capable of clearly forming the pressure-sensitive adhesive layer even on a non-smooth surface.

[0003]

An object of the present invention is to provide a pressure-sensitive adhesive laminated sheet which can leave a pressure-sensitive adhesive layer laminated between two long sheets on one long sheet. An object of the present invention is to provide a production method and a transfer method capable of easily and reliably transferring the pressure-sensitive adhesive layer to a difficult-to-transfer surface or a non-smooth surface using the sheet.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, formed an adhesive layer having a predetermined pattern between two long sheets, Peel off one sheet and leave the adhesive layer on the other sheet surface,
It has been found that by transferring this pressure-sensitive adhesive layer, a pressure-sensitive adhesive layer having a shape such as a pattern can be formed clearly even on a non-smooth surface, and the present invention has been completed based on this finding. That is, the present invention relates to (1) a pressure-sensitive adhesive laminated sheet in which a pressure-sensitive adhesive layer is laminated in contact with the coated surface of two long sheets provided with a peelable coating, wherein the peelability of the two coated surfaces is (2) The pressure-sensitive adhesive laminated sheet according to (1), wherein the pressure-sensitive adhesive layer contains a heat-sensitive adhesive.
2. The pressure-sensitive adhesive laminated sheet according to claim 1, wherein the pressure-sensitive adhesive layer is blended with a coloring agent, and (4) the first rolled sheet of the first long sheet coated with a release coating is fed out, and the pressure-sensitive adhesive is applied to the coated surface. By applying and drying the liquid, an adhesive layer is formed, and a roll of the second long sheet with a releasable coating is unwound and laminated so that the coated surface is in contact with the adhesive layer. (5) A method for producing a pressure-sensitive adhesive laminated sheet, characterized in that there is a difference in the releasability of the coating between the first long sheet and the second long sheet in terms of weight. ) The rolled raw material in which the adhesive layer is laminated in contact with the coating surface of two long sheets coated with a coating having a difference in lightness in peelability is drawn out, and the two long sheets are peeled off and heavy peeling is performed. Adhesive to the coated surface Leaving the layer, the adhesive layer is brought into contact with the object to be transferred, by pressurizing from the back surface of the long sheet,
6. The method for transferring an adhesive layer, which comprises transferring the pressure-sensitive adhesive layer to an object to be transferred, and (6) heating the transfer portion when transferring the adhesive layer to the object to be transferred. A method for transferring an adhesive layer.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The pressure-sensitive adhesive laminated sheet of the present invention is a pressure-sensitive adhesive laminated sheet in which a pressure-sensitive adhesive layer is laminated in contact with the coated surfaces of two long sheets having a release coating. This is a pressure-sensitive adhesive laminated sheet having a slight difference in the releasability of the coated surface of two sheets. In the present invention, the material of the long sheet is not particularly limited, and examples thereof include a plastic film and paper. The pressure-sensitive adhesive used in the present invention is not particularly limited, and examples thereof include a rubber-based pressure-sensitive adhesive and an acrylic pressure-sensitive adhesive. In the present invention, the shape of the pressure-sensitive adhesive layer is not particularly limited, for example, a pattern,
Examples include letters, numbers, and solid colors. Figure 1
1 is a schematic partial cross-sectional view of one embodiment of the pressure-sensitive adhesive laminated sheet of the present invention. The pressure-sensitive adhesive laminated sheet of the present embodiment has a pressure-sensitive adhesive layer 5 laminated on a long sheet 2 provided with a light release coating 1 and a long sheet 4 provided with a heavy release coating 3. I have. The light releasability is a property of easily peeling with a small force, and the heavy releasability is a property of requiring a large force for peeling. In the pressure-sensitive adhesive laminated sheet of the embodiment shown in FIG. 1, when the long sheet 2 and the long sheet 4 are peeled off, the pressure-sensitive adhesive layer 5 remains on the long sheet 4 side on which the heavy release coating 3 is applied, and is lightly peeled. The long sheet 2 provided with the functional coating 1 is removed away from the pressure-sensitive adhesive layer.

In the present invention, there is no particular limitation on the method of forming a releasable coating having a difference in lightness. For example, the releasability is differentiated by using a solution of the same kind of release agent to make a difference in shading. Alternatively, by changing the composition of the release agent used, a difference can be made in the release properties. Even with the same type of release agent solution, a light release coating is formed on the surface to which the concentrated solution is applied, and a heavy release coating is formed on the surface to which the dilute solution is applied. When a silicone-based release agent composition is applied to impart releasability, if non-reactive silicone is incorporated into the composition, the non-reactive silicone bleeds out of the cured silicone film and does not react on the cured film. A thin coating of conductive silicone is formed, resulting in a light release coating. In addition, a heavy release coating can be formed by increasing the amount of a crosslinking agent in the silicone release agent composition. Various release agents having different releasability are marketed as release agents for light release, medium release, heavy release, release control and the like or release agents for release paper. For example, from Shin-Etsu Chemical Co., Ltd., KS770A for general use, KS776A, KS
838, KS705F, KS679H for light peeling, KS8
37, KS778, KS830 for medium / heavy peeling, KS83
9. KS708A and KS718 for release control are sold, and various release agents are also sold by Toray Dow Corning Silicone Co., Ltd., Toshiba Silicone Co., Ltd., and the like. By appropriately combining these commercially available release agents, a long sheet having desired release properties can be manufactured.

FIG. 2 is an explanatory view of one embodiment of the method for producing a pressure-sensitive adhesive laminated sheet of the present invention. In the present embodiment, the first long sheet 7 with the light releasable coating is unwound from the first material roll 6, and the adhesive liquid 10 is applied to the coating surface by the intaglio cylinder 8 and the pressure bonding cylinder 9. Print on a design, etc. The solvent is volatilized in the drying unit 11 of the long sheet on which the adhesive liquid is printed, and the adhesive layer 5 having a desired pattern is formed on the coating surface. A second long sheet 13 coated with a heavy release coating is unwound from the second roll 12 and a nip roller is applied so that the pressure-sensitive adhesive layer formed on the first long sheet is in contact with the coating surface. At 14, the pressure-sensitive adhesive laminated sheet 15 of the present invention is completed, and is wound up by a take-up roll to obtain a pressure-sensitive adhesive laminated sheet roll 16. In this embodiment, after the pressure-sensitive adhesive layer was formed on the long sheet with the light-peelable coating, the long sheet with the heavy-peelable coating was laminated. After the pressure-sensitive adhesive layer is formed on the long sheet to which the coating is applied, the long sheet to which the light-peelable coating is applied can be laminated. In this embodiment, the gravure printing is performed using the intaglio cylinder, but the printing method is not particularly limited, and for example, relief printing, planographic printing, and the like can be performed.

FIG. 3 is an explanatory view of one embodiment of the method for transferring a pressure-sensitive adhesive layer of the present invention. The pressure-sensitive adhesive laminated sheet 15 is fed out from the pressure-sensitive adhesive laminated sheet roll 16, and the first long sheet 7 on which the light-peelable coating is applied is peeled off by a peeling roller 17 to expose the pressure-sensitive adhesive layer 5, and the first long sheet is exposed. The sheet is taken up on a take-up roll 18. Since there is a difference in light and heavy in the releasability of the coated surfaces of the two long sheets, the first long sheet to which the lightly peelable coating is applied is peeled off, and the pressure-sensitive adhesive layer is coated with the heavy-peelable coating. It remains on the second long sheet. When the angle between the adhesive laminated sheet 15 and the first long sheet 7 is reduced, that is, when a sharp change in the direction of travel of the sheet is set,
The first long sheet can be favorably peeled off. Send the long sheet with the exposed adhesive layer to the transfer process,
The pressure-sensitive adhesive layer 19 is used to bring the pressure-sensitive adhesive layer into contact with the transferred material 20,
Further, the pressure-sensitive adhesive layer is transferred to the transfer object by applying pressure from the back surface of the second long sheet 13. According to the method of the present invention, since the pressure-sensitive adhesive layer is pressed by the pressure welding device, the transferred object has a non-smooth surface such as a nonwoven fabric, a net, and an embossed product, or a non-transferable surface such as non-polarity. Even for an article, the pressure-sensitive adhesive layer can be easily and reliably transferred. When the object to be transferred is a long article, the object to be transferred can be transferred while continuously moving the pitch in a direction parallel or perpendicular to the pressure-sensitive adhesive laminated sheet. The second long sheet 13 from which the pressure-sensitive adhesive layer has been removed by transfer is wound up on a winding roll 21.

In the method of the present invention, the transfer portion can be heated when transferring the pressure-sensitive adhesive layer to the transfer object. By heating the transfer part, the viscosity of the adhesive layer is reduced,
Transfer can be performed more reliably. There is no particular limitation on the method of heating the transfer portion. For example, by heating the press-contact surface of the press-contact device, heating can be performed from the back of the long sheet, or the transfer object is a thin article. In this case, a heating plate may be provided on the back surface of the transfer object to heat the transfer object from the back surface. In the present invention, a heat-sensitive adhesive can be blended in the pressure-sensitive adhesive layer. By adding an appropriate amount of the heat-sensitive adhesive to the pressure-sensitive adhesive layer, the heat-sensitive adhesive is imparted to the pressure-sensitive adhesive layer, and the heat transfer portion is heated when the pressure-sensitive adhesive layer is transferred to the object to be transferred, thereby exhibiting the heat-sensitive adhesive effect. be able to. Further, when the resin forming the pressure-sensitive adhesive layer has a cross-linking property, the transfer to the non-smooth surface is improved. In the present invention, a coloring agent can be blended in the pressure-sensitive adhesive layer. There is no particular limitation on the coloring agent to be blended, and examples thereof include pigments, dyes, and metal powders. By adding a coloring agent to the pressure-sensitive adhesive layer, the decorative effect of the transferred object to which the pressure-sensitive adhesive layer has been transferred can be enhanced. In addition, letters,
By adopting a shape such as a numeral, printing in another step can be omitted.

[0010]

By using the pressure-sensitive adhesive laminate sheet of the present invention, the pressure-sensitive adhesive layer can be easily and reliably transferred to a non-polar hard-to-transfer surface or a non-smooth surface such as a nonwoven fabric, a net or an embossed product. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic partial cross-sectional view of one embodiment of the pressure-sensitive adhesive laminated sheet of the present invention.

FIG. 2 is an explanatory view of one embodiment of the method for producing a pressure-sensitive adhesive laminated sheet of the present invention.

FIG. 3 is an explanatory view of one embodiment of the method for transferring a pressure-sensitive adhesive layer of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 light release coating 2 long sheet 3 heavy release coating 4 long sheet 5 adhesive layer 6 first raw material roll 7 first long sheet 8 intaglio cylinder 9 pressure cylinder 10 adhesive liquid 11 drying unit DESCRIPTION OF SYMBOLS 12 Second roll raw material 13 Second long sheet 14 Nip roller 15 Adhesive laminated sheet 16 Adhesive laminated sheet roll 17 Peeling roller 18 Winding roll 19 Press-contact device 20 Transfer object 21 Winding roll

Claims (6)

[Claims] 1. A pressure-sensitive adhesive laminated sheet in which a pressure-sensitive adhesive layer is laminated in contact with a coated surface of two long sheets provided with a releasable coating, wherein the difference in the releasability of the two coated surfaces is light and heavy. An adhesive laminated sheet characterized by having: 2. The pressure-sensitive adhesive laminated sheet according to claim 1, wherein the pressure-sensitive adhesive layer contains a heat-sensitive adhesive. 3. The pressure-sensitive adhesive laminated sheet according to claim 1, wherein the pressure-sensitive adhesive layer contains a coloring agent. 4. A pressure-sensitive adhesive layer is formed by unwinding a roll of the first long sheet provided with a peelable coating, applying a pressure-sensitive adhesive liquid on the coated surface, and drying.
A method for producing a pressure-sensitive adhesive laminated sheet, in which a rolled material roll of a second long sheet having a peelable coating is unwound and laminated so that its coated surface is in contact with the pressure-sensitive adhesive layer, the first long sheet And a method of producing a pressure-sensitive adhesive laminated sheet, characterized in that there is a difference in the releasability of the coating between the first and second long sheets. 5. An original roll wound with a pressure-sensitive adhesive layer in contact with the coated surface of two long sheets coated with a coating having a difference in lightness in releasability. Peeling off the adhesive layer on the heavy release coating surface, bringing the adhesive layer into contact with the object to be transferred, and applying pressure from the back of the long sheet to transfer the adhesive layer to the object to be transferred. A method for transferring a pressure-sensitive adhesive layer. 6. The method for transferring an adhesive layer according to claim 5, wherein the transfer section is heated when the adhesive layer is transferred to the transfer object.