JP2010121014A - Waterproof, single-sided adhesive tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof, single-sided adhesive tape having a high waterproofness since excellent in following property toward an uneven surface, also having abrasion resistance and weatherproof property capable of resisting to the use at outdoor and also considered in making it a light weight. <P>SOLUTION: This waterproof, single-sided adhesive tape obtained by laminating an adhesive composition 4 containing a (meth)acrylate as a main component on the polyethylene foam surface of a supporting body 3 obtained by laminating a protective film layer 1 consisting of a urethane resin or an ionomer resin with a polyethylene foam layer 2 having ≥0.3 mm thickness is used. Further, it is preferable to laminate an aluminum foil layer 6 having 0.01 to 0.10 mm thickness between the layers of the protective film layer and polyethylene foam layer. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a waterproof single-sided adhesive tape that is mainly used for waterproofing a truck bed, a rivet fixing part of a container, a joint part, and the like, and has excellent waterproofness, workability, weather resistance, and weight reduction.

  Metal panels such as iron plates and aluminum plates are used in the assembly of transportation equipment such as automobiles, trucks, railroads, airplanes, home appliances such as refrigerators and washing machines, and structures in houses and buildings. The panel members are assembled by stacking the end portions thereof and fixing them by riveting, screwing, or the like. And it is necessary to perform the sealing process in order to prevent ingress of water in the level difference part of the overlapping part of those member panels, or the junction part by a screw, a rivet, etc.

As such a sealing process, a liquid sealing material is generally widely used. The sealing process by applying such a liquid sealing material uses a method of adhering the sealing material using, for example, a cartridge gun. However, since a certain sealing property and aesthetics are required, there are the following problems. there were.
(1) The construction of the sealing material requires skill and requires a lot of work time.
(2) It takes time from construction to curing, and during that time, work that requires external force to the construction part cannot be performed and curing is necessary.

  Therefore, in order to eliminate these problems, in recent years, for example, a pressure-sensitive adhesive composition based on butyl rubber is applied to one of base materials (supports) formed by bonding a polyester film and an aluminum foil. The waterproof tape (patent document 1) etc. which have been used are used.

JP-A-11-106720

However, although such a conventional waterproof tape is excellent in workability compared with a liquid sealing material, it still has the following problems.
(1) Since the tape base material (support) is a sheet in which a polyester film and an aluminum foil are bonded together, the flexibility of the tape is poor. Insufficient adhesion to the body, resulting in insufficient sealing.
(2) Since the adhesive composition based on butyl rubber is used, the adhesive strength to metal is weak, but when it is used in a part that is exposed to direct sunlight in summer due to lack of heat resistance, The adhesive may flow and contaminate the surroundings.
(3) Further, the same applies to the sealing material. However, since it is necessary to cover the rivet fixing portion, a certain amount of coating is required for the sealing material, and a certain thickness is required for the waterproof tape. Affects the total weight of the loading platform.

  The present invention has been made to solve the above-mentioned problems, does not require skill in construction, does not require curing after construction, and has excellent waterproof properties due to excellent followability to uneven surfaces. In addition, it is an object of the present invention to provide a waterproof single-sided adhesive tape that has wear resistance and weather resistance that can withstand outdoor use and is also considered in terms of weight reduction.

  Therefore, as a result of earnest research to solve the above-mentioned problem, the above problem is caused by using a support composed of a protective film layer and a foam layer, and an adhesive composition mainly composed of (meth) acrylic acid ester. The present inventors have found that the problem can be solved and have completed the present invention. The present invention comprises the following first and second inventions.

  That is, according to the first aspect of the present invention, a support having a protective film layer made of urethane resin or ionomer resin and a polyethylene foam layer having a thickness of 0.3 mm or more laminated on the polyethylene foam surface of the support (meta ) A waterproof single-sided pressure-sensitive adhesive tape comprising a pressure-sensitive adhesive composition mainly composed of an acrylate ester.

  The second invention is a support in which an aluminum foil layer having a thickness of 0.01 to 0.10 mm is further laminated between a protective film layer and a polyethylene foam layer. It is related with the waterproof single-sided adhesive tape of description.

  The waterproof single-sided adhesive tape according to the present invention has excellent followability with respect to uneven surfaces, so that it has high waterproofness, abrasion resistance that can withstand outdoor use, weather resistance, and further lighter than conventional waterproof single-sided adhesive tapes. Play.

  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 waterproof single-sided adhesive tape according to the present invention]
The structure of the waterproof single-sided adhesive tape according to the present invention is shown in FIGS.
The waterproof single-sided adhesive tape according to the present invention is basically an adhesive formed on the surface of a foam layer with respect to a support (3) composed of a protective film layer (1) and a foam layer (2). And the agent layer (4). In addition, although the separator (release paper) shown by 5 in the figure is not an essential configuration, it can be appropriately employed depending on the product form.
Moreover, as shown in FIG. 2, it is preferable to provide an aluminum foil layer (6) between the protective film layer (1) and the foam layer (2).

[Protective film layer]
The protective film layer constituting the support of the waterproof single-sided adhesive tape according to the present invention consists of a urethane resin or ionomer resin, which will be described later, formed into a film shape, and is resistant to the waterproof single-sided adhesive tape by protecting the foam layer. Property and weather resistance.
Although the thickness of a protective film layer can be made into various thickness according to a use, it is the range of 0.01 mm-1.00 mm normally, Preferably it is 0.05-0.30 mm. When the thickness of the protective film layer is less than 0.01 mm, the strength of the film is reduced. For example, when a person steps on the tape while the tape is bonded to the member, the film is torn and has a sealing property. Cannot be obtained. On the other hand, when the thickness is 1.00 mm or more, the tape cannot follow the steps of the overlapping portions of the panel, the rivets or the unevenness of the screws, and the water stoppage is adversely affected.

The “urethane resin” in the present invention is a polyaddition reaction of a relatively high molecular weight polyol having a plurality of hydroxyl groups in the molecule, a relatively low molecular weight polyol and a polyisocyanate compound having a plurality of isocyanate groups in the molecule. It is resin which has a urethane bond obtained by this. The urethane resin contains a soft block made of a high molecular weight polyol and a polyisocyanate compound, and a hard block made of a low molecular weight polyol and a polyisocyanate compound.
Examples of commercially available urethane resins include “Milactolan E385”, “Milactolane E375”, “Milactolan P395” manufactured by Nippon Polyurethane Industry Co., Ltd., “Kuramylon U8165” manufactured by Kuraray Co., Ltd., and the like. In addition, examples of commercially available urethane resin films include “Esmer” manufactured by Nippon Matai Co., Ltd. and “Higres” manufactured by Seadom Co., Ltd.

The “ionomer resin” in the present invention is a polymer in which some or all of the carboxyl groups in a copolymer of an olefin and an α, β-unsaturated carboxylic acid are ionically crosslinked between molecules by a metal cation. It is a resin. Examples of the olefin used for the ionomer resin include known olefins such as ethylene and propylene. Examples of the α, β-unsaturated carboxylic acid include acrylic acid and methacrylic acid. Examples of the metal cation include cations of any metal such as alkaline earth metal (sodium, potassium, magnesium, etc.), alkali metal, zinc, silver, copper and the like.
Commercially available products of the above ionomer resins include “HIMILAN 1554”, “HIMILAN 1601”, “HIMILAN 1650”, “HIMILAN 1652UV”, “HIMILAN 1702”, “HIMILAN 1856” manufactured by Mitsui DuPont Chemical Co., Ltd. It is done. Examples of commercially available ionomer resin films include “HM-07” and “HM-52” manufactured by Tamapoli Co., Ltd.

  Moreover, in the said urethane resin or ionomer resin, various additives, such as antioxidant (anti-aging agent), a heat stabilizer, a light stabilizer, and an ultraviolet absorber, may be added as needed. In particular, in applications exposed to direct sunlight outdoors, add antioxidants (anti-aging agents), heat stabilizers, light stabilizers, and UV absorbers to improve weather resistance and discoloration resistance. Is preferred.

[About the foam layer]
The foam layer constituting the support of the waterproof single-sided adhesive tape according to the present invention is made of polyethylene foam, and can be waterproofed while achieving weight reduction.
Here, the thickness of the polyethylene foam layer is 0.3 mm or more. By setting the thickness to 0.3 mm or more, the rivet fixing portion can be easily covered without wrinkles. In addition, it is preferable that the polyethylene foam has a foaming ratio of 10 to 15 because weight reduction is possible.
Commercially available products of such polyethylene foams include “Bora La IF # 1001” and “Bora La IF # 1501” manufactured by Sekisui Chemical Co., Ltd., “Slim Ace ZD1500W” and “Slim Ace ID 700W” manufactured by Furukawa Electric Co., Ltd. Etc.

[About aluminum foil layer]
In the waterproof single-sided adhesive tape support according to the present invention, an aluminum foil layer having a thickness of 0.01 to 0.10 mm is further laminated between the protective film layer and the polyethylene foam layer. preferable. By providing the aluminum foil layer, ultraviolet rays are blocked, so that the weather resistance is excellent, and water leakage or the like hardly occurs when used for a truck bed. In addition, tree branches and gravel may collide with the loading platform while the truck is running. However, the provision of an aluminum foil layer prevents damage due to collision and makes it difficult for water leakage to occur.

  In laminating the protective film layer and the foam layer, or the protective film layer, the aluminum foil layer, and the foam layer, general adhesives, pressure-sensitive adhesives, hot melts, and the like can be used. However, it is necessary to use one that is sufficiently adhered to each layer. In addition, adhesives, pressure-sensitive adhesives, hot melts, and the like used for laminating the protective film layer and the foam layer, or the protective film layer and the aluminum foil layer are exposed to ultraviolet rays or the like that have passed through the protective film layer due to the structure of the support. There is a possibility that weather resistance is necessary.

[About adhesive layer]
The pressure-sensitive adhesive used for the pressure-sensitive adhesive layer in the waterproof single-sided pressure-sensitive adhesive tape of the present invention is a pressure-sensitive adhesive mainly composed of (meth) acrylic acid ester because it has good weather resistance and good adhesion to a wide range of adherends. An agent is preferably used. The pressure-sensitive adhesive composition is applied and laminated on the polyethylene foam surface of the support. In addition, acrylic acid and methacrylic acid may be collectively referred to as “(meth) acrylic acid” and an adhesive composition mainly composed of (meth) acrylic acid ester may be referred to as “acrylic adhesive”.

  The acrylic pressure-sensitive adhesive is, for example, an (meth) acrylic acid ester monomer of an alcohol having an alkyl group having 1 to 12 carbon atoms, preferably a (meth) acryl having an alkyl group having 4 to 12 carbon atoms. A homopolymer of an acid ester monomer or a copolymer of (meth) acrylic acid ester monomers, or a copolymer of the above (meth) acrylic acid ester monomer and a polymerizable monomer copolymerizable with the (meth) acrylic acid ester monomer. The thing which has a polymer etc. as a main component is 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 tackiness of the (meth) acrylic polymer can be used within a range not impairing the effects of the present invention. .
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.

  As the above-mentioned acrylic pressure-sensitive adhesive, conventionally known ones can be used, a solvent-type pressure-sensitive adhesive in which an acrylic polymer is dissolved in an organic solvent, a 100% resin part hot-melt pressure-sensitive adhesive, an ultraviolet curable pressure-sensitive adhesive, and an aqueous medium. As needed, it can be used from the emulsion type adhesive in which the adhesive emulsion polymer was disperse | distributed. Among them, the solvent-type acrylic pressure-sensitive adhesive is particularly preferable because it is excellent in adhesion to various adherends, heat resistance and water resistance, and can easily add a colorant as required. . In general, emulsion-type acrylic pressure-sensitive adhesives tend to have insufficient water resistance because they contain emulsifiers, and hot-melt-type acrylic pressure-sensitive adhesives tend to have insufficient heat resistance. In addition, since UV curable acrylic pressure-sensitive adhesives need to be UV transmissive when irradiated with UV rays, the addition of a colorant may cause problems that UV transmissive properties deteriorate and curability decreases. There is sex.

  The acrylic pressure-sensitive adhesive may further contain, for example, an isocyanate-based, epoxy-based, or metal chelate-based cross-linking agent to adjust the adhesive force. The content of the crosslinking agent is not particularly limited, and is usually 0.01 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 acrylic adhesives as necessary. An agent may be added.

  Commercially available acrylic adhesives include “KH100ANT” (solvent type), “KH54NT” (solvent type), “CW-1” (emulsion type) manufactured by Konishi Co., Ltd., and “1700” manufactured by Soken Chemical Co., Ltd. (Solvent type), “E-1000” (emulsion type), “Alloset 8850E” (solvent type) manufactured by Nippon Shokubai Co., Ltd., and the like.

  The coating thickness of the pressure-sensitive adhesive layer can be varied depending on the application, but is usually in the range of 0.01 mm or more and less than 1.00 mm in dry thickness, preferably 0.03 mm or more and 0.20 mm. Is less than. If the thickness of the pressure-sensitive adhesive layer is less than 0.01 mm, sufficient adhesion may not be obtained. On the other hand, when the thickness of the pressure-sensitive adhesive layer is 0.20 mm or more, when a solvent-type pressure-sensitive adhesive is used, a large amount of solvent needs to be dried, resulting in a problem that productivity is remarkably deteriorated.

[About Separator]
The waterproof single-sided adhesive tape according to the present invention can be provided with a separator (release paper) for the purpose of protecting the adhesive layer in the distribution process after production. However, a separator may not necessarily be required depending on the product form.
A conventionally well-known separator base material can be used as a separator. Examples thereof include plastic films such as polyethylene terephthalate, polyethylene, and polypropylene, and paper. Paper is preferable in terms of availability, ease of use, and price.

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

  A waterproof single-sided pressure-sensitive adhesive tape having the following constitution was prepared and evaluated for each item of waterproofness, weather resistance, abrasion resistance, weight, and holding power (23 ° C., 80 ° C.). The evaluation methods and evaluation criteria are as follows.

[Test method and evaluation criteria for waterproofness]
A rivet (size of the crest portion: diameter 15 mm, height 5 mm) was attached to the bottom plate of a cylindrical aluminum can. A waterproof single-sided adhesive tape (50 mm × 50 mm) was bonded so that the rivet peak reached the center of the tape. After bonding, water was poured into an aluminum can and the presence or absence of water leakage was confirmed after 1 hour.
Evaluation criteria ○: No water leakage was confirmed.
×: Water leakage was confirmed

[Testing methods and evaluation criteria for weather resistance]
A waterproof single-sided adhesive tape was affixed to a stainless steel plate, and after curing for 1 hour, this was attached to a sunshine carbon arc lamp type light resistance and weather resistance tester so that the tape surface was irradiated. After 3000 hours of irradiation, the surface condition of the tape was observed to confirm whether peeling, cracking, cracking, tearing, distortion, and choking (a state in which powder was blown) were observed.
Evaluation criteria ○: Almost no change compared to before irradiation
×: Any of the above changes compared to before irradiation

[Testing method and evaluation criteria for friction resistance]
Based on JIS K7205, it evaluated by the Taber type abrasion test. After 21,000 rotations with wear wheel H18 and a load of 1 kg, evaluation was performed by reducing the mass due to wear.
Evaluation criteria ◎: Weight loss is 0-50mg or less
○: Weight loss is over 50mg but not more than 300mg
×: Weight loss exceeded 300mg

[Evaluation criteria for weight reduction]
The weight of the waterproof single-sided adhesive tape (50 mm × 50 mm) was measured. As a comparison object, the weight of a sealing material (“Konishi Co., Ltd.“ Truck mounting seal ”) applied to 50 mm wide × 50 mm long × 10 mm high and cured was measured to be 13.1 g.
Evaluation criteria ◎: 1/10 (1.31 g) or less compared to sealing materials
○: 1/5 or less (1.32 to 2.62 g) compared with the sealing material
X: It exceeds 1/5 compared with the sealing material (2.63 g or more).

[Testing method and evaluation criteria for holding power]
A waterproof single-sided adhesive tape of 50 mm × 25 mm was bonded to a stainless steel plate at 23 ° C. so that the adhesion area was 25 mm × 25 mm, and was pressure-bonded with a 2 kg roll. This specimen was cured for 10 minutes and then placed in an environment of 23 ° C. or 80 ° C. for 10 minutes, and then a 200 g weight was attached to the tape (FIG. 4). After attaching a weight, it evaluated by whether a waterproof single-sided adhesive tape peeled from a stainless steel plate within 1 hour.
Evaluation criteria ○: not peeled off even after 1 hour
×: peeled off within 1 hour

[Example 1]
A waterproof single-sided adhesive tape having the following layer structure was prepared and subjected to various tests.
・ Protective film layer: Ionomer film
SEM101-CR6PET manufactured by Seadam Co., Ltd.
Thickness 0.1mm
-Foam layer: Polyethylene foam
Slim Ace ZD-1500-W manufactured by Furukawa Electric Co., Ltd.
Thickness 1.0mm
・ Adhesive layer: Acrylic adhesive
KH54 manufactured by Konishi Co., Ltd.
0.075mm thickness

[Example 2]
A waterproof single-sided adhesive tape having the following layer structure was prepared and subjected to various tests.
・ Protective film layer: Ionomer film
SEM101-CR6PET manufactured by Seadam Co., Ltd.
Thickness 0.1mm
-Aluminum foil layer: Aluminum foil (thickness 0.05mm)
-Foam layer: Polyethylene foam
Slim Ace ZD-1500-W manufactured by Furukawa Electric Co., Ltd.
Thickness 1.0mm
・ Adhesive layer: Acrylic adhesive
KH54 manufactured by Konishi Co., Ltd.
0.075mm thickness

[Example 3]
A waterproof single-sided adhesive tape having the following layer structure was prepared and subjected to various tests.
・ Protective film layer: Urethane resin film
DU605-CDR made by Seadom Co., Ltd.
Thickness 0.1mm
-Aluminum foil layer: Aluminum foil (thickness 0.05mm)
-Foam layer: Polyethylene foam
Slim Ace ZD-1500-W manufactured by Furukawa Electric Co., Ltd.
Thickness 1.0mm
・ Adhesive layer: Acrylic adhesive
KH54 manufactured by Konishi Co., Ltd.
0.075mm thickness

[Example 4]
A waterproof single-sided adhesive tape having the following layer structure was prepared and subjected to various tests.
・ Protective film layer: Ionomer film
SEM101-CR6PET manufactured by Seadam Co., Ltd.
Thickness 0.1mm
-Aluminum foil layer: Aluminum foil (thickness 0.05mm)
-Foam layer: Polyethylene foam
Borara H05003 manufactured by Sekisui Chemical Co., Ltd.
Thickness 0.3mm
・ Adhesive layer: Acrylic adhesive
KH54 manufactured by Konishi Co., Ltd.
0.075mm thickness

[Comparative Example 1]
A waterproof single-sided adhesive tape having the following layer structure was prepared and subjected to various tests.
・ Protective film layer: Urethane resin film
DU605-CDR made by Seadom Co., Ltd.
Thickness 0.1mm
-Aluminum foil layer: Aluminum foil (thickness 0.05mm)
・ Adhesive layer: Butyl adhesive
WF407 manufactured by Konishi Co., Ltd.
Thickness 1.0mm

[Comparative Example 2]
A waterproof single-sided adhesive tape having the following layer structure was prepared and subjected to various tests.
・ Protective film layer: Ionomer film
SEM101-CR6PET manufactured by Seadam Co., Ltd.
Thickness 0.1mm
-Aluminum foil layer: Aluminum foil (thickness 0.05mm)
-Foam layer: Polyethylene foam
Bora La XL-H3001 manufactured by Sekisui Chemical Co., Ltd.
Thickness 0.1mm
・ Adhesive layer: Acrylic adhesive
KH54 manufactured by Konishi Co., Ltd.
0.075mm thickness

[Comparative Example 3]
A waterproof single-sided adhesive tape having the following layer structure was prepared and subjected to various tests.
-Foam layer: Polyethylene foam
Slim Ace ZD-1500-W manufactured by Furukawa Electric Co., Ltd.
Thickness 1.0mm
・ Adhesive layer: Acrylic adhesive
KH54 manufactured by Konishi Co., Ltd.
0.075mm thickness

[Comparative Example 4]
A waterproof single-sided adhesive tape having the following layer structure was prepared and subjected to various tests.
・ Protective film layer: Polyester film
Unitika's Emblet S
Thickness 0.05mm
-Foam layer: Polyethylene foam
Slim Ace ZD-1500-W manufactured by Furukawa Electric Co., Ltd.
Thickness 1.0mm
・ Adhesive layer: Acrylic adhesive
KH54 manufactured by Konishi Co., Ltd.
0.075mm thickness

The results of various tests in Examples and Comparative Examples are shown below.

[Table 1]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Example 1 Example 2 Example 3 Example 4
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Protective layer substrate * 1 A A U A
Aluminum foil layer No Yes Yes Yes Foam layer thickness * 2 1.0 1.0 1.0 0.3
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Waterproof ○ ○ ○ ○
Weather resistance ○ ○ ○ ○
Abrasion resistance ○ ○ ◎ ○
Weight ◎ ◎ ◎ ◎
Holding power (23 ℃) ○ ○ ○ ○
(80 ℃) ○ ○ ○ ○
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
* 1: A = ionomer resin film / U = urethane resin film * 2: Unit = mm

[Table 2]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Protective layer substrate * 3 A A No E
Aluminum foil layer Yes Yes No No Foam layer thickness * 2 No 0.1 1.0 0.3
Adhesive layer Butyl Acrylic Acrylic Acrylic ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Waterproof ○ × ○ ○
Weather resistance ○ ○ × ×
Abrasion resistance ○ ○ × ×
Weight × ◎ ◎ ◎
Holding power (23 ℃) ○ ○ ○ ○
(80 ℃) × ○ ○ ○
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
* 3: A = ionomer resin film / E = polyester resin film * 2: Unit = mm

As shown in Table 1, in the examples having the configuration of the present invention, good results were obtained in waterproofness, weather resistance, wear resistance, weight, holding force at 23 ° C. and 80 ° C. I understand that.
On the other hand, as shown in Table 2, in the comparative example lacking the configuration of the present invention, defects were recognized in any of the evaluation items.

  Since the waterproof single-sided adhesive tape according to the present invention has excellent followability with respect to uneven surfaces, it is highly waterproof, wear-resistant to withstand outdoor use, weather resistance, and more lightweight than conventional waterproof single-sided adhesive tapes. , Mainly used for waterproofing truck bed, container rivet fixing part, joint part and so on.

It is explanatory drawing which shows the basic composition of the waterproof single-sided adhesive tape of this invention. It is explanatory drawing which shows the other aspect of the waterproofing single-sided adhesive tape of this invention. It is explanatory drawing (a top view and a side view) which shows the test method of waterproofness. It is explanatory drawing which shows the test method of holding power.

Explanation of symbols

1: Protective film layer 2: Foam layer 3: Support 4: Adhesive layer 5: Separator (release paper)
6: Aluminum foil layer 7: Cylindrical aluminum can 8: Waterproof single-sided adhesive tape 9: Rivet 10: Stainless steel plate

Claims (2)

  For a support in which a protective film layer made of a urethane resin or an ionomer resin and a polyethylene foam layer having a thickness of 0.3 mm or more are laminated, a (meth) acrylic acid ester as a main component is formed on the polyethylene foam surface of the support. A waterproof single-sided adhesive tape, wherein the adhesive composition is laminated. The waterproof single-sided adhesive tape according to claim 1, wherein the waterproof single-sided adhesive tape is a support in which an aluminum foil layer having a thickness of 0.01 to 0.10 mm is further laminated between a protective film layer and a polyethylene foam layer. .

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