JP2008024922A - Separator-attached, single sided self-adhesive foam tape, and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a separator-attached, single-sided self-adhesive foam tape which can be manufactured easily by using a commercially available foam as a support and exhibits an excellent workability in the step of sticking to an adherend, as well as a manufacturing method thereof. <P>SOLUTION: The separator-attached, single-sided self-adhesive foam tape comprising (A) a foam as a support, (B) a pressure-sensitive adhesive layer and (C) a separator, is characterized by setting the layer (B) having a slight pressure-sensitive adhesion on the surface contacting with the foam (A) in the separator (C), and, by so constituting, that it is unrolled in such a manner that it is composed of the pressure-sensitive adhesive layer (B), the foam (A) and the separator (C) in order from the side of the adherend at the time of unrolling the concerned tape of a roll-formed product and of sticking it to the adherend. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a single-sided adhesive foam tape with a separator in which a foam is used as a support, and one side of the support is subjected to adhesive processing, and a method for producing the same.

  Single-sided adhesive foam tape with adhesive processing on one side of foam is soundproofing, heat insulation, and stop for civil engineering / building structures, houses, electrical / electronic equipment or joints of automobiles, especially trucks. Widely used for water, airtightness, vibration control, protection, impact mitigation, etc.

JP 58-173179 A Japanese Patent Laid-Open No. 10-17833

  Various types of such single-sided foam pressure-sensitive adhesive tapes have been conventionally used. For example, a pressure-sensitive adhesive layer is provided on one side of the foam, and a release layer is provided on the other side of the pressure-sensitive adhesive layer. The thing which stuck the separator which has this is known (refer FIG. 3). The pressure-sensitive adhesive layer includes a pressure-sensitive adhesive applied to a predetermined thickness, or a porous base material such as paper, rayon paper, or nonwoven fabric impregnated with a pressure-sensitive adhesive, and a plastic film such as polyethylene or polyethylene terephthalate. The thing which apply | coated the adhesive is known.

However, such conventional single-sided foam pressure-sensitive adhesive tape has the following problems.
(1) Since the tape must be adhered to the adherend after the separator is peeled off or peeled off, the sticking operation is very complicated.
(2) In a state where the tape is wound as a roll-shaped product, the non-adhesive surface of the foam does not have an adhesive force on the surface in contact with the separator, so that the roll is likely to collapse due to an external impact or the like.
(3) Since the non-adhesive surface side of the foam is exposed after the tape is attached to the adherend and before use, foreign matter such as dust and dust may adhere to the foam surface.

  The present invention eliminates the above-mentioned problems, is excellent in adhesion workability, does not easily collapse as a roll product, and after the tape is adhered to the adherend, the foam surface is separated until use. It provides a single-sided adhesive foam tape with a separator that can be protected by the method and a method for producing the same.

  As a result of intensive studies, the present inventors have found that the above problem can be solved by providing a layer having slight adhesiveness on the surface of the separator that contacts the support, and have completed the present invention.

  That is, 1st invention wound the said tape as a roll-shaped product with the foam (A) which is a support body, the adhesive layer (B) formed on the single side | surface of this foam (A), and At the time, the separator (C) for preventing the pressure-sensitive adhesive layer (B) non-processed surface of the foam (A) from contacting the adherend-adhered surface of the pressure-sensitive adhesive layer (B), The separator (C) is a single-sided adhesive foam tape comprising a release layer (c1) formed on the surface of the separator (C) that contacts the adhesive layer (B), and the support (A). It is related with the single-sided adhesive foam tape with a separator by which the slightly adhesive layer (c2) is formed in the other surface which touches.

  Moreover, 2nd invention unwinds the said tape which is a roll-shaped product, and when sticking it on a to-be-adhered material, an adhesive layer (B), a foam (A), a separator in order from the to-be-adhered material side. It is related with the single-sided adhesive foam tape with a separator based on 1st invention characterized by being unwound so that it may be comprised by (C).

  Moreover, 3rd invention is a manufacturing method of the single-sided adhesive foam tape with a separator, Comprising: The following process (X) (Y) (Z) comprises, 1st and 2nd invention characterized by the above-mentioned. The manufacturing method of the single-sided adhesive foam tape with a separator concerning this invention. The step (X) is a step of forming a slightly adhesive layer (c2) on the other side of the separator (C) in which the release layer (c1) is formed on one side in advance, and the step (Y) is a separator. The step of integrating the foam (A) and the separator (C) by bonding the processed surface of the fine adhesive layer (c2) of (C) and the foam (A), step (Z) is foaming In this step, the pressure-sensitive adhesive layer (B) is formed on one side of the body (A).

  Moreover, 4th invention is related with the single-sided adhesive foam tape with a separator based on 1st and 2nd invention, wherein an adhesive layer (B) is an acrylic adhesive.

  The fifth invention relates to a single-sided adhesive foam tape with a separator according to the first and second inventions, wherein the release layer (c1) is mainly composed of silicone.

  Moreover, 6th invention is a single side | surface with a separator which concerns on 1st and 2nd invention characterized by a fine adhesion layer (c2) having chlorinated polyolefin or an ethylene-vinyl acetate copolymer as a main component. The present invention relates to an adhesive foam tape.

  The separator-attached single-sided adhesive foam tape according to the present invention is excellent in sticking workability, is less likely to collapse when the tape is wound as a roll product, and after sticking the tape to an adherend The foam surface can be protected with a separator until use. Moreover, the manufacturing method suitable for manufacturing the single-sided adhesive foam tape with a separator which show | plays these effects is provided.

  Hereinafter, embodiments of the present invention will be described in detail. In addition, this invention is not limited only to these illustrations, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

[Configuration of Single-sided Adhesive Foam Tape with Separator According to the Present Invention]
The structure of the single-sided adhesive foam tape with a separator according to the present invention is shown in FIG.

  The single-sided adhesive foam tape with a separator according to the present invention is basically composed of a foam (A) as a support, an adhesive layer (B) formed on the single side, and a separator (C). It is what is done. In the separator (C), when the tape is wound as a roll-shaped product, the non-adhesive surface of the foam (A) and the adherend attaching surface of the adhesive layer (B) are in contact with each other. In order to prevent this, it is inserted between these layers.

  In the separator (C), a release layer (c1) is formed on the surface that contacts the pressure-sensitive adhesive layer (B). In the separator (C), a slightly adhesive layer (c2) is formed on the surface in contact with the support (A).

  The single-sided adhesive foam tape with a separator according to the present invention is usually supplied to consumers as a roll product. Here, when the tape is unwound and adhered to the adherend, the adhesive layer (B), the foam (A), and the separator (C) are unwound in order from the adherend side. It is preferable that When such a configuration is adopted, there are the following advantages.

(1) Conventionally, as shown in FIG. 3, the separator, the pressure-sensitive adhesive layer, and the foam were sequentially formed from the adherend side. Was supposed to exist between. Therefore, it is necessary to simultaneously peel the separator while simultaneously sticking the single-sided adhesive foam tape to the adherend, and the sticking work is complicated.
On the other hand, in the single-sided adhesive foam tape with a separator according to the present invention, the single-sided adhesive foam tape is stuck in a state where the separator is also integrated with the adherend, and then the separator (C) is foamed (A ), The operator can easily perform the sticking work.

(2) Conventionally, when a tape is wound as a roll-shaped product, there is no adhesive force on the surface where the non-adhesive surface of the foam and the separator are in contact with each other. It was.
On the other hand, in the single-sided adhesive foam tape with a separator according to the present invention, the fine adhesive layer (c2) is interposed between the foam (A) and the separator (C), so that the foam (A) and the separator ( There is an adhesive force during C). Therefore, the foam (A), the pressure-sensitive adhesive layer (B), and the separator (C) can be handled in an integrated manner at the stage where the tape is distributed as a roll product, such as impact from the outside. It is difficult to cause the winding collapse or misalignment.

(3) Conventionally, since the non-adhesive surface side of the foam is exposed after the tape is attached to the adherend until it is used, foreign matter such as dust and dust may adhere to the foam surface. .
On the other hand, in the single-sided adhesive foam tape with a separator according to the present invention, the surface of the foam can be protected by leaving the separator (C) until use even after the tape is attached to the adherend. Is possible.

[About Foam (A)]
A conventionally well-known sheet-like foam can be used as a foam (A) used for the single-sided adhesive foam tape with a separator which concerns on this invention.
The material of the foam (A) is not particularly limited because it varies depending on the application. For example, polyurethane, polyethylene, polypropylene, polyvinyl chloride, butyl rubber, chloroprene rubber, acrylic rubber, ethylene propylene rubber, natural rubber, nitrile rubber, Silicone rubber, fluororubber, etc. are mentioned. Polyurethane, polyethylene, and ethylene propylene rubber are preferable from the viewpoints of industrial availability, price, strength, disposal after use and incineration.
Although the thickness of a foam (A) can be suitably selected according to a use, it is preferable that it is 0.1 mm or more and less than 100 mm, for example. Particularly preferably, it is 0.5 mm or more and less than 30 mm.
Further, the expansion ratio of the foam can be appropriately selected depending on the application, but 1.1 to 100 times is used. Particularly preferably, it is 10 to 50 times.

[Adhesive layer (B)]
A conventionally well-known adhesive can be used as an adhesive used for the adhesive layer (B) in the single-sided adhesive foam tape with a separator of this invention. Examples include acrylic adhesives, natural rubber adhesives, synthetic rubber adhesives, urethane adhesives, and silicone adhesives, but good weather resistance and good adhesion to a wide range of substrates. Therefore, an acrylic pressure-sensitive adhesive is preferable.

  Here, the acrylic pressure-sensitive adhesive is, for example, an alcohol (meth) acrylate monomer having an alkyl group having 1 to 12 carbon atoms, preferably an alkyl group having 4 to 12 carbon atoms ( A homopolymer of a meth) acrylate monomer or a copolymer of (meth) acrylate monomers, or a polymerizable monomer copolymerizable with the (meth) acrylate monomer and the (meth) acrylate monomer (Acrylic acid and methacrylic acid may be collectively referred to as “(meth) acrylic acid”). There is no restriction | limiting in particular in a polymerization method, For example, solution polymerization, emulsion polymerization, etc. are mentioned.

  The (meth) acrylic acid ester monomer having an alkyl group having 4 to 12 carbon atoms in the alkyl group is not particularly limited. For example, n-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, Examples thereof include isooctyl (meth) acrylate, n-octyl (meth) acrylate, isononyl (meth) acrylate, lauryl (meth) acrylate, and the like. These can be used singly or in combination, but in order to achieve excellent balance between the tackiness of the resulting pressure-sensitive adhesive and the cohesion and cohesiveness, the glass transition temperature of the homopolymer ( Tg) is mainly composed of (meth) acrylic acid alkyl ester having a temperature of −50 ° C. or lower, and is further used in combination with (meth) acrylic acid ester of lower alcohol such as methyl (meth) acrylate and ethyl (meth) acrylate. It is preferable.

  Moreover, as a monomer copolymerizable with these (meth) acrylic acid ester monomers, carboxyl group-containing monomers such as (meth) acrylic acid, maleic acid, fumaric acid, itaconic acid or anhydrides thereof and (meth) acrylic acid Examples include hydroxyl group-containing monomers such as 2-hydroxyethyl, 4-hydroxybutyl (meth) acrylate, polyoxyethylene (meth) acrylate, polyoxypropylene (meth) acrylate, and caprolactone-modified (meth) acrylate.

In addition, as other polymerizable monomer components, a polymerizable monomer for adjusting the glass transition point and peelability of the (meth) acrylic polymer can be used as long as the effects of the present invention are not impaired. .
Other polymerizable monomer components include, for example, components for improving cohesion and heat resistance such as sulfonic acid group-containing monomers, phosphate group-containing monomers, cyano group-containing monomers, vinyl esters, aromatic vinyl compounds, and carboxyl Adhesion improvement and crosslinking of group-containing monomer, acid anhydride group-containing monomer, hydroxyl group-containing monomer, amide group-containing monomer, amino group-containing monomer, imide group-containing monomer, epoxy group-containing monomer, N-acryloylmorpholine, vinyl ethers, etc. A component having a functional group serving as a linking base point can be used as appropriate. Other components can be used alone or in combination of two or more.

  The pressure-sensitive adhesive may contain, for example, an isocyanate-based or epoxy-based crosslinking agent and the adhesive strength is adjusted. The content of the crosslinking agent is not particularly limited, and is usually 0.2 to 5.0% by weight with respect to the acrylic resin in the pressure-sensitive adhesive.

  In addition, various additions such as tackifiers, inorganic or organic fillers, antioxidants (anti-aging agents), heat stabilizers, light stabilizers, UV absorbers, etc., may be added to the pressure-sensitive adhesive as necessary. An agent may be added.

  The application thickness of the pressure-sensitive adhesive layer (B) varies depending on the application and is not particularly limited. However, the dry thickness is preferably 5 μm or more and less than 500 μm, and more preferably 10 μm or more and less than 150 μm.

  Furthermore, if necessary, a reinforcing layer such as a plastic film such as polyethylene terephthalate, polyethylene or polypropylene, or a porous substrate such as paper, rayon paper or nonwoven fabric is present in the pressure-sensitive adhesive layer (B). May be.

[Separator (C)]
A conventionally well-known separator base material can be used as a separator (C) used for the single-sided adhesive foam tape with a separator which concerns on this invention. Examples thereof include plastic films such as polyethylene terephthalate, polyethylene, and polypropylene, and paper such as high-quality paper, kraft paper, and glassine paper. Paper is preferable in terms of availability, convenience, and price.

  In the separator (C) according to the present invention, the release layer (c1) is formed on the surface in contact with the pressure-sensitive adhesive layer (B), and the slightly adhesive layer (c2) is formed on the surface in contact with the support (A). Is formed. Hereinafter, these will be described in more detail.

[Release layer (c1)]
The release layer (c1) may be any layer having a conventionally known release action, but as its component, it is preferable that the component is mainly composed of silicone.
The release layer (c1) may be processed by the manufacturer of the single-sided adhesive foam tape with a separator according to the present invention, or a separator that has been subjected to such a release treatment in advance may be used.
In particular, paper such as high-quality paper, kraft paper, and glassine paper is used as the base material, and both sides are sealed with polyethylene laminate, clay coat, water-based resin coat such as polyvinyl alcohol, etc., and one side of them is treated with silicone release treatment A separator made of a glass separator or glassine paper having one side of which is subjected to silicone release treatment is preferable in terms of availability, usability, price, and the like.
Moreover, when applying the fine adhesion layer (c2) described later, there is no penetration into the separator base material, and good adhesion between the fine adhesion layer (c2) and the separator non-release treatment surface can be obtained. Therefore, it is particularly preferable that the non-release treated surface is coated with an aqueous resin such as clay or polyvinyl alcohol, or a glassine paper base material.

[Slightly adhesive layer (c2)]
In the present invention, the purpose of providing the slightly adhesive layer (c2) is to be able to handle the foam (A) and the separator (C) integrally in the tape production stage. In addition, another object is that the foam (A), the pressure-sensitive adhesive layer (B), and the separator (C) are integrally handled at the stage where the tape is distributed as a roll product. In other words, it is to prevent the occurrence of “collapse”.

That is, the fine adhesion layer (c2) is sufficient if it has such a degree of fine adhesion that it can achieve these purposes, and the material and components thereof are not particularly limited. However, among them, the fine adhesion layer (c2) is mainly composed of a chlorinated polyolefin or an ethylene-vinyl acetate copolymer, and has good adhesion to the non-release treatment surface of the separator. It is preferable from the viewpoint of having moderate fine adhesion to the foam surface.
These are supplied in a state of being dissolved or dispersed in an organic solvent, and by coating this on the non-release treatment surface of the separator (C), a slightly adhesive layer (c2) is formed. The
The coating thickness of the slightly adhesive layer (c2) varies depending on the application and is not particularly limited. However, the dry thickness is preferably 0.1 μm or more and less than 100 μm, more preferably 1 μm or more and less than 50 μm.

[About the manufacturing method of the single-sided adhesive foam tape with a separator concerning the present invention]
The single-sided adhesive foam tape with a separator according to the present invention is preferably produced by a production method comprising the following steps (X), (Y) and (Z).
Step (X): A step of forming a slightly adhesive layer (c2) on the other surface of the separator (C), on which the release layer (c1) has been previously formed on one side.
Process (Y): The process of integrating a foam (A) and a separator (C) by bonding the fine adhesion layer (c2) processed surface of a separator (C), and a foam (A).
Process (Z): The process of forming an adhesive layer (B) on one side of a foam (A).

  Step (X) is a step of forming a slightly adhesive layer (c2) on one side of the separator (C). As described above, the fine pressure-sensitive adhesive layer (c2) supplied in the state of a solution or an aqueous dispersion is applied to a conventional coater such as a gravure coater, a reverse coater, a comma coater, or a Mayer bar coater. It may be formed by coating using

  The step (Y) is a step of integrating the foam (A) and the separator (C) by bonding the processed surface of the fine adhesion layer (c2) of the separator (C) and the foam (A). is there. When the foam (A) and the separator (C) are bonded together, they may be pressure-bonded without particularly applying pressure.

A process (Z) is a process of forming an adhesive layer (B) on the single side | surface of a foam (A). There is no particular limitation on the method for coating and forming the pressure-sensitive adhesive layer (B) on the foam (A).
In applying the adhesive, it may be applied using a normal coater such as a gravure coater, reverse coater, comma coater, or Mayer bar coater. Moreover, as a formation method of an adhesive layer (B), you may apply directly and may transfer the adhesive layer previously formed by coating on process paper.

  Of course, the order of the step (X) and the step (Y) is to provide the step (Y) after the step (X), but the order of the step (Z) is not particularly limited. Further, it is possible to perform these three steps almost simultaneously. However, as a particularly preferable process sequence, the process (X), the process (Y), and the process (Z) are performed in this order.

  EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not limited to an Example.

[Example 1]
Ethylene-vinyl acetate copolymer emulsion (Sumikaflex 401HQ, manufactured by Sumika Chemtex Co., Ltd.), non-volatile content 55% ) Is dried to a thickness of 20 μm and dried at 100 ° C. for 3 minutes to form a slightly adhesive layer [step (X)].
This slightly adhesive layer was bonded to the skin surface of a polyurethane foam having a thickness of 4 mm (“Super Sheet HP”, single-sided skin surface, single-sided sliced surface, manufactured by Nippon Kajo Co., Ltd.) [Step (Y)].
Next, 100 parts by weight of an acrylic pressure-sensitive adhesive (“KH54NT” manufactured by Konishi Co., Ltd., non-volatile content 45%, ethyl acetate solution), polyisocyanate (“Coronate L” manufactured by Nippon Polyurethane Industry Co., Ltd.), non-volatile 1 part by weight (75% min, ethyl acetate solution) added and mixed until uniform, release one-side silicone treated paper separator ("SLK80KCZ" manufactured by Sumika Kogyo Co., Ltd./here used as process paper) It is applied to the mold-treated surface so that the thickness after drying is 50 μm, dried at 100 ° C. for 3 minutes to form an adhesive layer, and on the sliced surface of the polyurethane foam having a separator in the skin layer obtained above Bonded together [Step (Z)].
The obtained tape was cured at 23 ° C. for 1 week, then processed to a width of 15 mm and a length of 10 m, and the tape was wound in a roll shape on a 3-inch paper tube while removing the process paper. The obtained tape was subjected to the following performance test.
“SLK80KCZ” manufactured by Sumika Kogyo Co., Ltd. is a release paper in which both sides of a high-quality paper base material are processed with polyethylene and one side is subjected to silicone release treatment.

[Evaluation methods]
(1) Adhesive workability While unwinding the tape from the roll, the adhesive surface was bonded to a stainless steel plate to confirm whether the adhesive workability was good or bad.
○ ・ ・ ・ Since the separator can be attached to the foam surface,
Good wearing workability × ・ ・ ・ Because it is necessary to stick together while peeling the separator, the sticking workability is bad. (2) Anti-winding resistance In the roll tape, it is opposite from the inner and outer circumferences of the side. When a direction force was applied, the difficulty of causing winding deviation was evaluated (see FIG. 4).
○ ・ ・ ・ Does not easily cause winding misalignment × ・ ・ ・ Easily causes winding misalignment (3) Separator releasability ○ ・ ・ ・ Separator can be peeled off from foam surface × ・ ・ ・ Foam The separator cannot be peeled off from the surface

[Example 2]
A roll similar to Example 1 except that the ethylene-vinyl acetate copolymer emulsion was changed to a chlorinated polyolefin resin ("Supercron L206" manufactured by Nippon Paper Chemicals Co., Ltd., nonvolatile content 50%, toluene solution). A tape was manufactured and evaluated for performance.

[Example 3]
A roll tape was produced in the same manner as in Example 1 except that the separator was changed to “SSB-80FKR (A)” manufactured by Shinomura Chemical Co., Ltd., and performance evaluation was performed.
In addition, “SSB-80FKR (A)” manufactured by Shinomura Chemical Co., Ltd. used as a separator has one side of a high-quality paper base material subjected to a release treatment of polyethylene and silicone, and the other side (namely, a slightly adhesive layer forming surface). It is a release paper coated with clay.

[Example 4]
A roll tape was produced in the same manner as in Example 1 except that the separator was changed to “PET50 × 1-A3” manufactured by Nipper Co., Ltd., and performance evaluation was performed.
In addition, “PET50 × 1-A3” manufactured by Nipper Co., Ltd. used as a separator is obtained by performing silicone release treatment on one side of a PET base material.

[Example 5]
A roll tape was produced in the same manner as in Example 2 except that the separator was changed to “SSB-80FKR (A)” manufactured by Shinomura Chemical Co., Ltd., and performance evaluation was performed.
In addition, “SSB-80FKR (A)” manufactured by Shinomura Chemical Co., Ltd. used as a separator has one side of a high-quality paper base material subjected to a release treatment of polyethylene and silicone, and the other side (namely, a slightly adhesive layer forming surface). It is a release paper coated with clay.

[Example 6]
A roll tape was produced in the same manner as in Example 2 except that the separator was changed to “PET50 × 1-A3” manufactured by Nipper Corporation, and performance evaluation was performed.
In addition, “PET50 × 1-A3” manufactured by Nipper Co., Ltd. used as a separator is obtained by performing silicone release treatment on one side of a PET base material.

[Example 7]
A roll tape was produced in the same manner as in Example 2 except that the separator was changed to “S-80WGZ” manufactured by Sumika Kogyo Co., Ltd., and performance evaluation was performed.
“S-80WGZ” manufactured by Sumika Kogyo Co., Ltd. used as a separator is a release paper in which one side of a glassine paper base material is subjected to silicone release treatment.

[Comparative Example 1]
To 100 parts by weight of acrylic pressure-sensitive adhesive (“KH54NT” manufactured by Konishi Co., Ltd., nonvolatile content 45%, ethyl acetate solution), polyisocyanate (“Coronate L” manufactured by Nippon Polyurethane Industry Co., Ltd., nonvolatile content 75%) 1 part by weight of ethyl acetate solution), and mixed until uniform on one-side silicone-treated paper separator (“SLK80KCZ” manufactured by Sumika Kogyo Co., Ltd.) with a thickness after drying of 50 μm And then dried at 100 ° C. for 3 minutes to form an adhesive layer on the sliced surface of polyurethane foam (“Super Sheet HP”, single-sided skin surface, single-sided sliced surface, manufactured by Nihon Hojo Co., Ltd.) Pasted together.
The obtained tape was cured at 23 ° C. for 1 week, then processed to a width of 15 mm and a length of 5 m, and wound into a roll on a 3-inch paper tube. About the obtained tape, the same performance test as Example 1 was done.

[Comparative Example 2]
Except that the ethylene-vinyl acetate copolymer emulsion was changed to a polyester urethane resin (“Byron UR-3210” manufactured by Toyobo Co., Ltd., non-volatile content 30%, methyl ethyl ketone solution), a roll shape as in Example 1. Tapes were manufactured and evaluated for performance.

[Comparative Example 3]
An attempt was made to produce a roll tape in the same manner as in Example 2 except that the separator was changed to “S-80WZ” manufactured by Sumika Kogyo Co., Ltd. However, at the stage where the chlorinated polyolefin resin was applied, it soaked in and a fine adhesion layer could not be formed.
In addition, “S-80WZ” manufactured by Sumika Kogyo Co., Ltd. used as a separator has one side of a high-quality paper base material subjected to a release treatment of polyethylene and silicone, and the other side (that is, the surface where the fine adhesive layer is formed) is untreated. This is a release paper.

[Table 1]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Example 1 2 3 4 5 6 7
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Adhesion workability ○ ○ ○ ○ ○ ○ ○
──────────────────────────────────────
Winding resistance ○ ○ ○ ○ ○ ○ ○
──────────────────────────────────────
○ ○ ○ ○ ○ ○ ○
Peelability ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

[Table 2]
━━━━━━━━━━━━━━━━━━
Comparative Example 1 2
━━━━━━━━━━━━━━━━━━
Adhesive workability × ○
──────────────────
Winding resistance × ○
──────────────────
-× of separator
Peelability ━━━━━━━━━━━━━━━━━━

The evaluation results of the examples are shown in Table 1, and the evaluation results of the comparative examples are shown in Table 2.
As is clear from the results of the table, the separator-attached single-sided adhesive foam tapes (Examples 1 to 7) according to the present invention are superior in sticking workability than conventional ones (Comparative Example 1) and also cause winding misalignment. I find it difficult.
Moreover, about the ease of peeling of the separator from a foam (separator peelability), ethylene-vinyl acetate copolymer (Example 1) and chlorinated polyolefin (Example 2) as a main component are used as a fine adhesion layer. In this case, the separator could be peeled off from the surface of the foam, whereas in Comparative Example 2 having a polyester urethane resin as a main component, the separator could not be peeled off from the surface of the foam.
Further, in Comparative Example 3, as described above, since the fine adhesive layer forming surface is untreated high-quality paper, the fine adhesive layer can be formed by permeation at the stage of applying the chlorinated polyolefin resin. There wasn't.

  The single-sided adhesive foam tape with a separator according to the present invention is a soundproof, heat insulating, water-stopping, airtight, etc. on a civil engineering / building structure, a house, an electrical / electronic device, or a joint part of an automobile, particularly a truck, etc. It is used for the purpose of vibration control, protection, impact mitigation, etc. (1) It has good workability when sticking the tape to the adherend, and (2) In the state where the tape is wound in a roll shape It is difficult for the material to collapse, and (3) it is possible to protect the foam surface during the use of the tape until the separator is peeled off after being attached to the adherend.

It is explanatory drawing which shows the basic composition of the single-sided adhesive foam tape with a separator of this invention. It is explanatory drawing which shows an example at the time of sticking the single-sided adhesive foam tape with a roll-shaped separator of this invention to a to-be-adhered material. It is explanatory drawing which shows the structure of the conventional single-sided adhesive foam tape with a separator. It is explanatory drawing of the evaluation method of a winding shift | offset | difference resistance.

Explanation of symbols

1: Foam (A) [support]
2: Adhesive layer (B)
3: Separator (C)
3a: Release layer (c1)
3b: Slight adhesion layer (c2)
4: Substrate 5: Foam 6: Adhesive layer 7: Separator

Claims (6)

A foam (A) as a support;
An adhesive layer (B) formed on one side of the foam (A);
When the tape is wound as a roll-shaped product, the non-processed surface of the pressure-sensitive adhesive layer (B) of the foam (A) and the surface of the pressure-sensitive adhesive layer (B) to which the adherend is attached are in contact with each other. It is a single-sided adhesive foam tape with a separator composed of a separator (C) for preventing
A release layer (c1) was formed on the surface of the separator (C) in contact with the pressure-sensitive adhesive layer (B), and a slightly pressure-sensitive adhesive layer (c2) was formed on the other surface in contact with the support (A). A single-sided adhesive foam tape with a separator, characterized by being a thing.   When unwinding the tape, which is a roll product, and sticking it to the adherend, the adhesive layer (B), the foam (A), and the separator (C) are configured in this order from the adherend side. The single-sided adhesive foam tape with a separator according to claim 1, which is unwound. It is a manufacturing method of the single-sided adhesive foam tape with a separator, Comprising: The following process (X) (Y) (Z) is comprised, The single-sided adhesive foam tape with a separator of Claim 1 and 2 characterized by the above-mentioned. Production method.
Step (X): A step of forming a slightly adhesive layer (c2) on the other surface of the separator (C), on which the release layer (c1) has been previously formed on one side.
Process (Y): The process of integrating a foam (A) and a separator (C) by bonding the fine adhesion layer (c2) processed surface of a separator (C), and a foam (A).
Process (Z): The process of forming an adhesive layer (B) on one side of a foam (A).   The single-sided adhesive foam tape with a separator according to any one of claims 1 to 3, wherein the adhesive layer (B) is an acrylic adhesive.   The single-sided adhesive foam tape with a separator according to any one of claims 1 to 4, wherein the release layer (c1) contains silicone as a main component.   The single-sided adhesive foam tape with a separator according to any one of claims 1 to 5, wherein the slightly adhesive layer (c2) contains a chlorinated polyolefin or an ethylene-vinyl acetate copolymer as a main component.

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