JP4209001B2 - Composite double-sided tape - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a novel double-sided tape that can be combined with pressure-sensitive adhesive layers having different tackiness and can be given a function of re-peeling and re-adhering to a tape adherend, and a method for producing the same.
[0002]
[Prior art]
Conventional double-sided tapes are required to have the same functions as ordinary glue and adhesives.For example, a tape is attached to a sheet piece, and the tape is attached to a mount or the tape is attached to an envelope sealing piece. It is used to completely bond the adherend between the tape adherend and another adherend, such as adhering a sealing piece after enclosing the encapsulated material. And the general structure was what gave the pressure sensitive adhesive layer of a strong adhesion type to the release paper surface.
[0003]
[Problems to be solved by the invention]
However, there are cases where it is desired to make the tape adherent available for applications that cannot be achieved with conventional double-sided tape. In particular, if the tape adherend can be re-peeled and re-attached with another adherend or between adherends, for example, the tape adherend can be replaced at any position, and no displacement occurs. In order to temporarily conceal information on sticky sticky notes, postcards or seals, etc., a concealment sticker that is temporarily attached to cover the information description part or a message that is folded in half, The tape adherend can be used as a message memo that is temporarily worn and not easily read by others. Then, this invention makes it a subject to provide the novel double-sided tape which can provide the function to make it easy to re-peel and re-stick to a tape adherend, and its preparation method.
[0004]
[Means for Solving the Problems]
In order to achieve such a problem, the present inventor has conceived a double-sided tape formed by laminating a re-peeling / re-sticking type pressure-sensitive adhesive layer and a strong pressure-sensitive pressure-sensitive adhesive layer. That is, the composite double-sided tape of the present invention, Ri Na and removability re stuck wearing type pressure-sensitive adhesive layer of the strong adhesive type pressure-sensitive adhesive layer of laminated to a release paper, formed into a roll-like composite It is a double-sided tape, and the adhesive strength between the release paper surface and the re-peeling / re-sticking pressure-sensitive adhesive layer is a, and the adhesive strength between the release paper surface and the strong adhesive-type pressure-sensitive adhesive layer is b. When the adhesive strength between the re-peeling / re-sticking pressure-sensitive adhesive layer and the strong pressure-sensitive pressure-sensitive adhesive layer is c, the relationship of b <a <c is satisfied .
[0005]
In addition, the method for producing the double-sided tape of the present invention includes a re-peeling / re-sticking pressure-sensitive adhesive on one surface of a release paper having a release agent layer on the front and back surfaces, and a strong adhesive type on the other surface. a step of applying a pressure sensitive adhesive, respectively, Ri said release paper pressure sensitive adhesive layer by fixing the pressure-sensitive adhesive is formed name and a step of winding into a roll, the release paper and The pressure-sensitive adhesive strength with the re-peeling / re-sticking pressure-sensitive adhesive layer is a, the pressure-sensitive adhesive strength between the release paper surface and the strong-pressure-sensitive pressure-sensitive adhesive layer is b, and the re-peeling / re-sticking type feeling. When the adhesive strength between the pressure-sensitive adhesive layer and the strong pressure-sensitive pressure-sensitive adhesive layer is c, the relationship of b <a <c is satisfied .
[0006]
Therefore, according to the composite double-sided tape according to claim 1, the tape is cut to a desired length, adhered to a predetermined tape adherent with its strong adhesive pressure-sensitive adhesive layer, and then peeled again. With the re-adhesion type pressure-sensitive adhesive layer, it is possible to re-peel and re-adhere another adherend or between adherends.
[0007]
Further, according to the method for producing the composite double-sided tape according to claim 2, the re-peeling / re-sticking type pressure-sensitive adhesive and the strong pressure-sensitive pressure-sensitive adhesive have a release agent layer on the front and back surfaces. By applying and fixing to each of the front and back surfaces of the release paper, each pressure-sensitive adhesive layer can be formed almost simultaneously, and furthermore, the release paper on which the pressure-sensitive adhesive layer is formed is wound up in a roll shape. In the roll, the re-peeling and re-adhesive pressure-sensitive adhesive layer and the strongly-adhesive pressure-sensitive adhesive layer are strongly bonded, and by adjusting the adhesive strength, the re-peeling and re-sticking pressure-sensitive adhesive layer And the release paper, or the strong adhesive pressure-sensitive adhesive layer and the release paper are temporarily attached, whereby the composite double-sided tape of the present invention can be efficiently produced in a few steps.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the composite double-sided tape of the present invention and the production method thereof will be further described in detail with reference to the accompanying drawings. Here, FIG. 1 is a cross-sectional view of the composite double-sided tape of the present invention, FIG. 2 is a cross-sectional view of the composite double-sided tape of the present invention formed into a roll shape, and FIG. 3 is the use of the composite double-sided tape of the present invention. FIG. 4 is a schematic flow diagram of the method for producing the composite double-sided tape of the present invention.
[0009]
As shown in FIG. 1, the composite double-sided tape 1 of the present invention is formed by sequentially laminating a re-peeling / re-sticking pressure-sensitive adhesive layer 3 and a strong pressure-sensitive pressure-sensitive adhesive layer 4 on the surface of a release paper 2. Being done. The type of the re-peeling / re-sticking type or strong pressure-sensitive adhesive constituting each of the pressure-sensitive adhesive layers 3 and 4 may be a conventionally known type, and is not particularly limited. For example, a re-peeling and re-sticking type may be used for a conventional sticky sticky note or a concealment seal, while a strong adhesive type may be used for a conventional double-sided tape.
[0010]
Also, the release paper 2 may be a conventionally known release paper, and a general release paper has a release agent layer on one side, but in this embodiment, a re-peeling / re-sticking pressure-sensitive adhesive layer 3 is used as the release paper. When the composite double-sided tape 1 is formed into a roll shape as shown in FIG. 2, the release agent layer is brought into contact with the strong pressure-sensitive pressure-sensitive adhesive layer 4 as shown in FIG. It is configured. However, in view of the production method, it is most preferable to use the release paper 2 having a release agent layer on both sides.
[0011]
In addition, although the thing of a present Example is the structure which provided the pressure sensitive adhesive layer 3 of the re-peeling and re-sticking type on the surface of the release paper 2, and then provided the pressure sensitive adhesive layer 4 of the strong adhesion type. The present invention is not limited to this, and a strong pressure-sensitive pressure-sensitive adhesive layer 4 is provided on the surface of the release agent layer of the release paper 2, and then a re-peeling and re-sticking pressure-sensitive adhesive layer 4 is provided. It may be a configuration. However, with the latter configuration, the double-sided tape is temporarily attached to some adherend with a re-peeling and re-sticking pressure-sensitive adhesive layer, and the strong pressure-sensitive pressure-sensitive adhesive layer is exposed. Will be indirectly attached again to the tape adherend, and the composite double-sided tape is directly attached to the tape adherend, and the tape adherend may be placed between another adherend or It can be said that the configuration of this example in which the release paper protects the re-peeling / re-sticking pressure-sensitive adhesive layer until the adherends are re-peeling and re-sticking is more preferable in practice.
[0012]
As shown in FIG. 3, the composite double-sided tape of the present invention can be used, for example, when the tape adherend 5 is to be used as a sticky tag (i) a composite double-sided tape (not shown) formed into a roll shape. (B) after the tape is cut to a desired length, and (b) the sticky pressure sensitive adhesive layer 4 is attached to the tape adherend 5 as a piece of sticky paper, and (c) the release paper 2 is peeled off. (D) The re-peeling / re-sticking pressure-sensitive adhesive layer 3 that has been exposed is attached to another adherend 6 such as a desk so as to be peelable. As described above, the tape adherend 5 is provided with the function of being able to repeat peeling and sticking with another adherend any number of times by the re-peeling / re-sticking pressure-sensitive adhesive layer 3. Is done.
[0013]
About the formation method of each pressure-sensitive adhesive layers 3 and 4, for example, one pressure-sensitive adhesive is applied to the surface of the release paper 2 with a special coating machine or a printing machine, and the type of the pressure-sensitive adhesive is selected. Accordingly, the pressure-sensitive adhesive layer is formed by fixing with hot air drying, infrared irradiation, ultraviolet irradiation, etc., and the following pressure-sensitive adhesive layers are sequentially formed on the pressure-sensitive adhesive layer by the same method. However, the creation method described in claim 2 is most preferable.
[0014]
The most preferable method for producing the composite double-sided tape of the present invention will be described based on the embodiment shown in FIG. First, a re-peeling / re-sticking type pressure-sensitive adhesive 3 'is applied to one surface of the web of the release paper 2 fed from the roll feeding device UW of the release paper 2 having a release agent layer on the front and back surfaces. A strong adhesive pressure-sensitive adhesive 4 'is applied to the surface. In the present embodiment, the type of applicator C that can apply the pressure-sensitive adhesive to the front and back surfaces of the release paper 2 at the same time is used, but two types of applicators that apply to one side can be arranged side by side. good. Next, each of the pressure sensitive adhesives 3 'and 4' is simultaneously solidified and fixed by using a hot air heating type dryer D, and a re-peeling and re-sticking pressure sensitive adhesive layer 3 and a strong pressure sensitive adhesive. The agent layer 4 is formed. And the release paper 2 in which the said pressure sensitive adhesive layers 3 and 4 were formed is wound up in roll shape with the winding apparatus RW. Further, if necessary, the web of the release paper 2 may be cut into unit widths, or a cutting device for separating and separating into unit lengths, a sewing machine M, or the like may be provided.
[0015]
In addition, regarding the adhesive strength between the release paper surface and the pressure-sensitive adhesive layer and the pressure-sensitive adhesive layer, the adhesive strength between the release paper surface and the re-peeling / re-sticking pressure-sensitive adhesive layer in a composite double-sided tape formed into a roll A is the adhesive strength between the release paper surface and the strong pressure-sensitive pressure-sensitive adhesive layer, and b is the re-peeling and re-sticking pressure-sensitive adhesive layer and the strong pressure-sensitive pressure-sensitive adhesive layer. If the adhesive strength is c, the relationship between a, b and c is adjusted to a <b <c or b <a <c. <A <c is preferable. As described above, when the composite double-sided tape formed into a roll shape is unwound, the strong pressure-sensitive pressure-sensitive adhesive layer appears, and the re-peeling and re-sticking pressure-sensitive adhesive layer peels off. After the composite double-sided tape is attached to the tape adherend with a strong adhesive pressure-sensitive adhesive layer, it is immediately attached to another adherend or between adherends. This is because it is advantageous that the re-peeling / re-sticking pressure-sensitive adhesive layer is not exposed.
[0016]
【The invention's effect】
As described above, according to the composite double-sided tape of the present invention, after the tape is cut to a desired length and adhered to a predetermined tape adherend with its strong adhesive pressure-sensitive adhesive layer, Re-removable and re-adhesive pressure-sensitive adhesive layer allows re-re-adhesion and re-adhesion between different adherends or between adherends, sticking sticky tape, concealment sticker or message memo Thus, it can be used in applications that cannot be achieved with conventional double-sided tape. Further, according to the method for producing a composite double-sided tape of the present invention, each pressure-sensitive adhesive layer can be formed almost simultaneously, and further, the release paper on which the pressure-sensitive adhesive layer is formed is wound up in a roll shape, and pressure-sensitive By adjusting the adhesive strength between the adhesive layers, the composite double-sided tape of the present invention can be produced efficiently with few steps.
[Brief description of the drawings]
FIG. 1 is a cross-sectional explanatory view of a composite double-sided tape of the present invention.
FIG. 2 is a cross-sectional explanatory view of the composite double-sided tape of the present invention formed into a roll shape.
FIG. 3 is an explanatory diagram of a use state of the composite double-sided tape of the present invention.
FIG. 4 is a schematic flow diagram of a method for producing a composite double-sided tape of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Composite double-sided tape 2 Release paper 3 Re-peeling and re-adhesive pressure-sensitive adhesive layer 4 Strong adhesion type pressure-sensitive adhesive layer 5 Tape adherend 6 Another adherend 3 ' Pressure sensitive adhesive 4 'Strong pressure sensitive adhesive UW Feeding device C Coating machine D Dryer RW Winding device

Claims (2)

Ri the release paper name in the removable re stuck wearing type pressure-sensitive adhesive layer of the strong adhesive type pressure-sensitive adhesive layer of the laminated, a composite double-sided tape that is formed into a roll,
The pressure-sensitive adhesive strength between the release paper surface and the re-peeling / re-sticking pressure-sensitive adhesive layer is a, the pressure-sensitive adhesive strength between the release paper surface and the strong pressure-sensitive pressure-sensitive adhesive layer is b, and the re-peeling / re-sticking. A composite double-sided tape satisfying a relationship of b <a <c, where c is the adhesive strength between the adhesive pressure-sensitive adhesive layer and the strong pressure-sensitive adhesive layer . A step of applying a re-peeling / re-sticking type pressure-sensitive adhesive on one side of a release paper having a release agent layer on the front and back sides, and a strong adhesive type pressure-sensitive adhesive on the other side, Ri said release paper pressure sensitive adhesive layer by fixing the pressure-sensitive adhesive is formed name and a step of winding into a roll, the release paper and the removable re stuck wearing type pressure-sensitive adhesive A is the adhesive strength between the release paper surface and the pressure-sensitive adhesive layer of the strong adhesive type, b is the pressure-sensitive adhesive layer of the re-peeling and re-sticking type, and the pressure sensitivity of the strong adhesive type. A method for producing a composite double-sided tape, wherein the relationship of b <a <c is satisfied, where c is the adhesive strength with the adhesive layer .

Images