JP2000191990A - Plastic tacky and adhesive tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a tacky adhesive tape using a base film free from hygroscopic property and having good hand-tearing property by applying a tacky adhesive agent to a single layer of a specific cyclic olefinic polymer or a laminated tape of the above polymer layer and a polyolefin layer. SOLUTION: A tacky adhesive layer is formed on a single layer of a cyclic olefin-based polymer represented by formula I [(a) is 0 or 1; (b) is 0 or a positive integer; (k) is 0 or 1; R1 to R18 and R' and R" are each independently H, a halogen or a hydrocarbon group] or formula II [(c) and (d) are 0 or >=1 integer; (e) and (f) are each 0, 1 or 2; R21 to R39 are independently H, a halogen, an aliphatic or alicyclic or aromatic hydrocarbon or alkoxy] or one surface or both surfaces of a tape obtained by providing a polyolefin layer of polyethylene, polypropylene, etc., onto one surface or both surfaces of the above cyclic olefin- based polymer layer and polyolefin layer to provide the objective tacky adhesive tape having 300-2,000 kgf/cm2 tensile strength in tape width direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive tape having hand-cutting properties. More specifically, the present invention relates to a pressure-sensitive adhesive tape having at least one of an adhesive layer and an adhesive layer on a surface of a base film using a cyclic olefin-based polymer.

[0002]

2. Description of the Related Art Conventionally, in the case of an adhesive tape such as a cellophane tape, there is a problem that the cellophane of the base film is deformed when stored in a roll because the cellophane has hygroscopicity. In addition, for a mending tape, an acetate film as a base film is expensive. Further, there is a problem that the adhesive / adhesive tape provided with an adhesive layer or an adhesive layer on the surface of a polypropylene film cannot be cut by hand.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a pressure-sensitive adhesive tape using a base film which is inexpensive, has no hygroscopicity, and is easily cut off.

[0004]

Means for Solving the Problems The present inventors have found that by using a base film made of a cyclic olefin-based polymer, a sticky / adhesive tape having no hygroscopicity and being easily cut can be produced at low cost. The present invention has been completed.

That is, a first aspect of the present invention is that a layer (P) of a cyclic olefin polymer alone or a layer (P) of a cyclic olefin polymer and a layer of polyolefin provided on one or both surfaces of the layer (P) An adhesive / adhesive tape having an adhesive / adhesive layer on one or both surfaces of the tape comprising Q). The second aspect of the present invention is the adhesive / adhesive tape according to the first aspect, wherein the cyclic olefin-based polymer is a cyclic olefin polymer represented by the following general formula (I) or (II) or a hydrogenated product thereof. I will provide a.

Embedded image Wherein a is 0 or 1, b is 0 or a positive integer, k is 0 or 1, R 1 to R 18 and R ′ and R ″ are each independently a hydrogen atom, a halogen atom Or a hydrocarbon group, R 15 to R 18 may be bonded to each other to form a monocyclic or polycyclic ring, and the monocyclic or polycyclic ring may have a double bond;
15 to R16 or R17 and R18 may form an alkylidene group. )

Embedded image Wherein c and d are 0 or an integer of 1 or more;
And f is 0, 1 or 2, and R21 to R39 are each independently a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group,
An alicyclic hydrocarbon group, an aromatic hydrocarbon group or an alkoxy group, and a carbon atom to which R29 or R30 is bonded;
The carbon atom to which R33 is bonded or the carbon atom to which R31 is bonded may be bonded directly or via an alkylene group having 1 to 3 carbon atoms, and when e = 0 and f =
When it is 0, R35 and R32 or R35 and R39 may combine with each other to form a monocyclic or polycyclic aromatic ring. A third aspect of the present invention is that the cyclic olefin-based polymer is a copolymer of the cyclic olefin according to the second aspect of the present invention and a linear or branched α-olefin having 2 to 20 carbon atoms or a hydrogenated product thereof. The adhesive / adhesive tape according to the first aspect of the present invention is provided. A fourth aspect of the present invention is the adhesive / adhesive tape according to the first aspect, wherein the cyclic olefin-based polymer is a copolymer of the cyclic olefin and an aromatic vinyl compound according to the second aspect of the present invention or a hydrogenated product thereof. I will provide a. A fifth aspect of the present invention is a cyclic olefin-based polymer, which is a copolymer of the cyclic olefin according to the second aspect of the present invention, a linear or branched α-olefin having 2 to 20 carbon atoms, and an aromatic vinyl compound. The adhesive / adhesive tape according to the first aspect of the present invention, which is a hydrogenated product thereof, is provided. In a sixth aspect of the present invention, the cyclic olefin-based polymer is a copolymer of the cyclic olefin described in the second aspect of the present invention and an alkyl (meth) acrylate having 1 to 12 carbon atoms or a hydrogenated product thereof. And a pressure-sensitive adhesive tape according to (1). A seventh aspect of the present invention provides the adhesive / adhesive tape according to the first aspect, wherein the polyolefin is a polyethylene-based resin or a polypropylene-based resin. An eighth aspect of the present invention is that the tape has a tensile strength of 3 in the width direction.
The pressure-sensitive adhesive / adhesive tape according to the first aspect of the present invention, which has a thickness of from 00 to 2,000 kgf / cm ² .

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The adhesive / adhesive tape of the present invention is provided on a layer (P) of a cyclic olefin polymer alone or on a layer (P) of a cyclic olefin polymer and on one or both sides of the layer (P). It has a sticky / adhesive layer on one or both surfaces of a tape made of a thermoplastic resin layer (Q) such as polyolefin, and has good hand-cutting properties.

The cyclic olefin polymer used in the present invention is as follows. (A) A polymer composed of only the cyclic olefin represented by the general formula (I) or (II) (including a homopolymer composed of the same type of cyclic olefin and a copolymer composed of different types of cyclic olefin). (B) A copolymer of a cyclic olefin and a linear or branched α-olefin having 2 to 20 carbon atoms. (C) A copolymer of a cyclic olefin and an aromatic vinyl compound. (D) A copolymer of a cyclic olefin, a linear or branched α-olefin having 2 to 20 carbon atoms and an aromatic vinyl compound. (E) A copolymer of a cyclic olefin and an alkyl (meth) acrylate having 1 to 12 carbon atoms. (F) A copolymer of a cyclic olefin, an alkyl (meth) acrylate, and a linear or branched α-olefin having 2 to 20 carbon atoms and / or an aromatic vinyl compound. (G) Hydrogenated products of the above cyclic olefin polymers (A) to (F).

Cyclic olefin The cyclic olefin used in the present invention includes the cyclic olefins represented by the above general formula (I) or (II). The general formula (I) will be further described. In the formula, a is 0 or 1, b is 0 or a positive integer, and k is 0 or 1. When k is 1, the ring represented by k is a 6-membered ring, and when k is 0, this ring is a 5-membered ring. R1 to R18 and R '
And R ″ are each independently a hydrogen atom, a halogen atom or a hydrocarbon group.
It is a fluorine atom, a chlorine atom, a bromine atom or an iodine atom. Further, as the hydrocarbon group, usually, a group having 1 to 2 carbon atoms is used.
Examples include an alkyl group having 0, a halogenated alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 15 carbon atoms, and an aromatic hydrocarbon group. More specifically, examples of the alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, an amyl group, a hexyl group, an octyl group, a decyl group, a dodecyl group, and an octadecyl group. These alkyl groups may be substituted with a halogen atom. Examples of the cycloalkyl group include a cyclohexyl group, examples of the aromatic hydrocarbon group include a phenyl group,
And a naphthyl group. Further, the above general formula (I)
In the above, R15 and R16, R17 and R18, R15 and R18
17, R16 and R18, R15 and R18, or R
16 and R17 may be bonded to each other (together with each other) to form a monocyclic or polycyclic group, and the monocyclic or polycyclic ring thus formed has a double bond. It may be. Specific examples of the monocyclic or polycyclic ring formed here include the following.

[0009]

Embedded image

In the above examples, the carbon atoms numbered 1 or 2 represent the carbon atoms bonded to R15 (R16) or R17 (R18) in the general formula (I), respectively. R15 and R16, or R17 and R18
And may form an alkylidene group. Such an alkylidene group is usually an alkylidene group having 2 to 20 carbon atoms, and specific examples of such an alkylidene group include an ethylidene group, a propylidene group and an isopropylidene group.

The general formula (II) will be further described. In the formula, c and d are each independently 0 or a positive integer, and e and f are each independently 0, 1
Or 2. R21 to R39 are each independently
It is a hydrogen atom, a halogen atom, a hydrocarbon group or an alkoxy group. Here, the halogen atom is the same as the halogen atom in the general formula (I). Examples of the hydrocarbon group usually include an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 15 carbon atoms, and an aromatic hydrocarbon group. More specifically, as the alkyl group,
Examples include a methyl group, an ethyl group, a propyl group, an isopropyl group, an amyl group, a hexyl group, an octyl group, a decyl group, a dodecyl group and an octadecyl group. These alkyl groups may be substituted with a halogen atom. Examples of the cycloalkyl group include a cyclohexyl group, examples of the aromatic hydrocarbon group include an aryl group and an aralkyl group, and specifically, a phenyl group, a tolyl group, a naphthyl group, a benzyl group, and a phenylethyl group. And the like. Examples of the alkoxy group include a methoxy group, an ethoxy group, and a propoxy group. Here, the carbon atom to which R29 and R30 are bonded and the carbon atom to which R33 is bonded or the carbon atom to which R31 is bonded are bonded directly or via an alkylene group having 1 to 3 carbon atoms. It may be. That is, when the two carbon atoms are linked via an alkylene group, and R29 and R33 are, or, in conjunction with R30 and R31 each other, a methylene group (-CH ₂ -), ethylene Group (-CH ₂ CH _2- ) or propylene group
(-CH ₂ CH ₂ CH _2- ) to form any alkylene group. Further, when e = 0 and f = 0, R35 and R32 or R35 and R39 may combine with each other to form a monocyclic or polycyclic aromatic ring. Specifically, if e = 0 and f
When = 0, the following aromatic rings formed by R35 and R32 can be mentioned.

[0012]

Embedded image

Here, d is the same as d in the general formula (II). Specific examples of the cyclic olefin represented by the above general formula (I) or (III) include bicyclo
2-heptene derivative (bicyclohept-2-ene derivative),
Tricyclo-3-decene derivative, tricyclo-3-undecene derivative, tetracyclo-3-dodecene derivative, pentacyclo-4-pentadecene derivative, pentacyclopentadecadiene derivative, pentacyclo-3-pentadecene derivative, pentacyclo-3-hexadecene derivative, pentacyclo -4-hexadecene derivative, hexacyclo-4-heptacene derivative, heptacyclo-5-eicosene derivative, heptacyclo-
4-eicosene derivatives, heptacyclo-5-heneicosene derivatives, octacyclo-5-docosene derivatives, nonacyclo-
5-pentacocene derivative, nonacyclo-6-hexacocene derivative, cyclopentadiene-acenaphthylene adduct, 1,4
-Methano-1,4,4a, 9a-tetrahydrofluorene derivative, 1,
4-methano-1,4,4a, 5,10,10a-hexahydroanthracene derivatives and the like.

More specific examples of the cyclic olefin represented by the above general formula (I) or (II) include bicyclo
[2.2.1] Hept-2-ene (norbornene), 5-methylbicyclo [2.2.1] hept-2-ene, 5,6-dimethylbicyclo [2.
2.1] Hept-2-ene, 1-methylbicyclo [2.2.1] hept-2
-Ene, 5-ethylbicyclo [2.2.1] hept-2-ene, 5-n-
Butylbicyclo [2.2.1] hept-2-ene, 5-isobutylbicyclo [2.2.1] hept-2-ene, 7-methylbicyclo [2.2.
1] bicyclo [2.2.1] hept-2-ene derivatives such as hept-2-ene;

Tricyclo [4.3.0.1 ^2,5 ] -3-decene, 2-methyltricyclo [4.3.0.1 ^2,5 ] -3-decene, 5-methyltricyclo [4.3.0.1 ^2,5 ] -3 -Tricyclo [4.3.0.1 such as decene
^2,5 ] -3-decene derivative;

Tricyclo [4.4.0.1 ^2,5 ] -3-undecene, 1
Tricyclo [4.4.0.1 ^2,5 ] -3-undecene derivatives such as 0-methyltricyclo [4.4.0.1 ^2,5 ] -3-undecene;

Tetracyclo [4.4.0.1^2,5.1^7,10] -3-Dode
Sen, 8-methyltetracyclo [4.4.0.1^{Two ,Five}.1^7,10] -3-do
Decene, 8-ethyltetracyclo [4.4.0.1^2,5.1^7,10] -3-
Dodecene, 8-propyltetracyclo [4.4.0.1^2,5.1^7,10]
-3-dodecene, 8-butyltetracyclo [4.4.0.1^2,5.
1^7,10] -3-dodecene, 8-isobutyltetracyclo [4.4.0.
1^2,5.1 ^7,10] -3-dodecene, 8-hexyltetracyclo [4.
4.0.1^2,5.1^7,10] -3-dodecene, 8-cyclohexyltetra
Cyclo [4.4.0.1^2,5.1^7,10] -3-dodecene, 8-stearyl
Tetracyclo [4.4.0.1^2,5.1^7,10] -3-dodecene, 5,10-di
Methyltetracyclo [4.4.0.1^2,5.1^7,10] -3-dodecene,
2,10-dimethyltetracyclo [4.4.0.1^2,5.1^7,10] -3-Dode
Sen, 8,9-dimethyltetracyclo [4.4.0.1^2,5.1^7,10] -3
-Dodecene, 8-ethyl-9-methyltetracyclo [4.4.0.1
^2,5.1^7,10] -3-dodecene, 11,12-dimethyltetracyclo
[4.4.0.1^2,5.1^7,10] -3-dodecene, 2,7,9-trimethylte
Toracyclo [4.4.0.1^2,5.1^7,10] -3-Dodecene, 2,7-dimethyl
Tyl-9-ethyltetracyclo [4.4.0.1^2,5.1 ^7,10] -3-Dode
Sen, 2,7-dimethyl-9-isobutyltetracyclo [4.4.0.
1^2,5.1^7,10] -3-dodecene, 9,11,12-trimethyltetracy
Black [4.4.0.1^2,5.1^7,10] -3-Dodecene, 9-ethyl-11,12-
Dimethyltetracyclo [4.4.0.1^2,5.1^7,10] -3-Dodese
9-isobutyl-11,12-dimethyltetracyclo [4.4.0.
1^2,5.1^7,10] -3-dodecene, 5,8,9,10-tetramethyltet
Lacyclo [4.4.0.1^2,5.1^7,10] -3-Dodecene, 8-ethylidene
Tetracyclo [4.4.0.1^2,5.1^7,10] -3-dodecene, 8-d
Tylidene-9-methyltetracyclo [4.4.0.1^2,5.1^7,10] -3-
Dodecene, 8-ethylidene-9-ethyltetracyclo [4.4.0.
1^2,5.1^7,10] -3-Dodecene, 8-ethylidene-9-isopropyl
Letetracyclo [4.4.0.1^2,5.1^7,10] -3-dodecene, 8-d
Tylidene-9-butyltetracyclo [4.4.0.1^2,5.1^{7 ,Ten}] -3-
Dodecene, 8-n-propylidenetetracyclo [4.4.0.1^2,5.
1^7,10] -3-dodecene, 8-n-propylidene-9-methyltetra
Cyclo [4.4.0.1^2,5.1^7,10] -3-dodecene, 8-n-propyl
Den-9-ethyltetracyclo [4.4.0.1^2,5.1^7,10] -3-Dode
Sen, 8-n-propylidene-9-isopropyltetracyclo
[4.4.0.1^2,5.1^7,10] -3-dodecene, 8-n-propylidene-9-
Butyltetracyclo [4.4.0.1^2,5.1^7,10] -3-dodecene, 8
-Isopropylidenetetracyclo [4.4.0.1^2,5.1^7,10] -3-
Dodecene, 8-isopropylidene-9-methyltetracyclo
[4.4.0.1^2,5.1^7,10] -3-Dodecene, 8-isopropylidene-
9-ethyltetracyclo [4.4.0.1^2,5.1^7,10] -3-Dodese
8-isopropylidene-9-isopropyltetracyclo
[4.4.0.1^2,5.1^7,10] -3-Dodecene, 8-isopropylidene-
9-butyltetracyclo [4.4.0.1^2,5.1^7,10] -3-Dodese
8-chlorotetracyclo [4.4.0.1^2,5.1^7,10] -3-Dode
Sen, 8-boromotetracyclo [4.4.0.1^2,5.1^7,10] -3-
Dodecene, 8-fluorotetracyclo [4.4.0.1^2,5.1^7,10] -3
-Dodecene, 8,9-dichlorotetracyclo [4.4.0.1^2,5.1
^7,10] -3-Dodecene and other tetracyclo [4.4.0.1^2,5.1^7,10]
-3-dodecene derivatives;

[0018] pentacyclo ^{[6.5.1.1 3,6 .0 2,7 .0 9,13]} -4-
Pentadecene, 1,3-dimethylpentacyclo [6.5.1.1 ^3,6 .
0 ^2,7 .0 ^9,13] -4-pentadecene, 1,6-dimethyl-penta cyclo [6.5.1.1 ^{3, 6} .0 ^2,7 .0 ^9,13] -4-pentadecene, 14,15-dimethyl pentacyclo ^{[6.5.1.1 3, 6 .0 2,7 .0} 9,13] -4- pentacyclo such pentadecene ^{[6.5.1.1 3,6 .0 2,7 .0 9,13]} -4- pentadecene derivatives ;

Pentacyclo [7.4.0.1^2,5.1^9,12.0^8,13] -3
-Pentadecene, methyl-substituted pentacyclo [7.4.0.1^2,5.1
^9,12.0^8,13Pentacyclo [7.4.0.1] such as] -3-pentadecene
^2,5.1 ^9,12.0^8,13] -3-pentadecene derivatives;

[0020] pentacyclo ^{[6.5.1.1 3,6 .0 2,7 .0 9,13]} -4,
Pentacyclopentadecadiene derivatives such as 10-pentadecadiene;

Pentacyclo [8.4.0.1^2,5.1^9,12.0^8,13] -3
-Hexadecene, 11-methylpentacyclo [8.4.0.1^2,5.1
^9,12.0^8,13] -3-Hexadecene, 11-ethylpentacyclo
[8.4.0.1 ^2,5.1^9,12.0^8,13] -3-Hexadecene, 10,11-di #
Methyl pentacyclo [8.4.0.1^2,5.1^9,12.0^8,13] -3-hex
Pentacyclo [8.4.0.1 such as Sadecene^2,5.1^9,12.0^8,13] -3
-Hexadecene derivatives;

[0022] pentacyclo ^{[6.6.1.1 3,6 .0 2,7 .0 9,14]} -4-
Hexadecene, 1,3-dimethylpentacyclo [6.6.1.1 ^3,6 .
0 ^2,7 .0 ^9,14] -4-hexadecene, 15,16-dimethyl-penta cyclo [6.6.1.1 ^{3, 6} .0 ^2,7 .0 ^9,14] -4-pentacyclo [6.6, such as hexadecene. 1.1 ^3,6 .0 ^2,7 .0 ^{9, 14]} -4-hexadecene derivatives.

Among these, bicyclo [2.2.1] -2-f
Putene derivative, tetracyclo [4.4.0.1^2,5.1^7,10] -3-do
Decene derivative and hexacyclo [6.6.1.1^3,6.1^10,13.0
^2,7.0 ^9,14] -4-Heptadecene derivatives are preferred. Especially
Cyclo [2.2.1] -2-heptene, tetracyclo [4.4.0.1
^2,5.1^7,10] -3-dodecene is preferred.

These cyclic olefins represented by formula (I) or (II) can be used alone or in combination of two or more. General formula (I) as described above
Alternatively, the cyclic olefin represented by (II) can be produced by subjecting cyclopentadiene and an olefin having a corresponding structure to a Diels-Alder reaction.

Linear or branched α-olefin The linear or branched α-olefin includes ethylene, propylene, 1-butene, 1-pentene, 1-hexene,
1-octene, 1-decene, 1-dodecene, 1-tetradecene,
Linear α-olefin having 2 to 20 carbon atoms such as 1-hexadecene, 1-octadecene, 1-eicosene; 4-methyl-1-pentene, 3-methyl-1-pentene, 3-methyl-1- Examples thereof include a branched α-olefin having 4 to 20 carbon atoms such as butene. Among these, linear α-olefins having 2 to 4 carbon atoms are preferred, and ethylene is particularly preferred. Such linear or branched α-olefins can be used alone or in combination of two or more.

Aromatic vinyl compound (C) As the aromatic vinyl compound, styrene; o-methylstyrene, m-methylstyrene, p-methylstyrene, o,
Mono- or polyalkylstyrenes such as p-dimethylstyrene, o-ethylstyrene, m-ethylstyrene, p-ethylstyrene; methoxystyrene, ethoxystyrene, vinylbenzoic acid, methylvinylbenzoate, vinylbenzyl acetate, hydroxystyrene, o -Chlorostyrene, p-
Functional group-containing styrene derivatives such as chlorostyrene and divinylbenzene; 3-phenylpropylene, 4-phenylbutene, α-methylstyrene and the like. These aromatic vinyl compounds can be used alone or in combination of two or more.

Alkyl (meth) acrylate having 1 to 12 carbon atoms Examples of the alkyl (meth) acrylate having 1 to 12 carbon atoms include alkyl esters having 1 to 12 carbon atoms of (meth) acrylic acid. Examples of the alkyl having 1 to 12 carbons include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, and the following, linear or branched pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, etc. Is mentioned. They are,
One type may be used alone, or two or more types may be used in combination.

The cyclic olefin-based polymer according to the present invention is a polymer consisting of a single structural unit derived from the cyclic olefin represented by the general formula (I) or (II) (provided that the compound represented by the general formula (I) or (II) Or the structural units derived from the cyclic olefin represented by the general formula (I) or (II). And a structural unit derived from a linear or branched α-olefin having 2 to 20 carbon atoms, a structural unit derived from the aromatic vinyl compound, and a carbon unit having 1 to 12 carbon atoms.
Is a copolymer with at least one structural unit derived from an alkyl (meth) acrylate. Each structural unit may be a block or may be randomly connected.

The cyclic olefin polymer can be obtained by polymerizing the above monomer using a Ziegler catalyst or a metallocene catalyst. As the polymerization form, any of solution polymerization, bulk polymerization and slurry polymerization can be adopted, and any of continuous polymerization and batch polymerization can be performed. As the polymerization solvent, for example, carbon number 5
-10 aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, etc. can be used. The polymerization temperature is between -30 and 200
° C, the polymerization time is 5 minutes to 150 minutes, and the polymerization pressure is 0.1 to
It is in the range of 100 kg / cm ² .

As the cyclic olefin polymer, hydrogenated products of the various cyclic olefin polymers obtained above can also be used. In order to obtain the hydrogenated product, various cyclic olefin-based polymers obtained above are dissolved or dispersed in a solvent, and hydrogenated with hydrogen in the presence of a catalyst such as a noble metal such as platinum or palladium, nickel or copper. Obtained by adding.

The cyclic olefin polymer used in the present invention has an MFR at a load of 2160 g and a temperature of 250 ° C. of 0.5 to 40 g / 10 min, preferably 1 to 20 g / 10 min.
Minutes.

The cyclic olefin polymer has a glass transition point (Tg) of 50 to 220 ° C., preferably 80 to 220 ° C.
170 ° C., using a film having a moisture permeability coefficient of 25 μm 2
0 g · mm / m ² · day or less, preferably 10 g · mm / m
m ² · day or less, more preferably 5 g · mm / m ²
Days or less, and the water absorption rate (weight% increase rate when immersed in water at 23 ° C.) is 0.3% or less, preferably 0.1%
The following materials are used, which have a high light transmittance of 88 to 95% and good transparency. A film or sheet is formed by extrusion molding, inflation molding, or the like using the base polymer. The film or the like may be unstretched or may be uniaxially or biaxially stretched. By stretching, the MD is particularly easily torn, and a high breaking strength can be provided in the TD direction.

Layer (Q) of thermoplastic resin used in the present invention
Polyolefin, ethylene / vinyl acetate copolymer, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, various types of nylon, polyester, polyurethane, acrylonitrile / styrene / butene copolymer, etc. are used, and polyolefin is preferable. Examples of the polyolefin include a polyethylene resin, a polypropylene resin, and an ionomer. Examples of the polyethylene resin include high-density polyethylene, medium-density polyethylene, low-density polyethylene, linear low-density polyethylene, an ethylene / α-olefin random (or block) copolymer mixture mainly composed of polyethylene, and ethylene / α- Examples include those in which an olefin random (or block) copolymer chain is bonded. As the polypropylene resin, isotactic polypropylene, syndiotactic polypropylene, propylene / α-olefin random (or block) mainly composed of polypropylene
Examples thereof include a copolymer mixture, and a polypropylene chain having a propylene / α-olefin random (or block) copolymer chain bonded to a terminal thereof. Various resin additives such as an antistatic agent, an antioxidant, an ultraviolet absorber, and a nucleating agent may be added to the polyolefin. As the tape material, a film formed by extrusion molding, inflation molding, or the like of the above polymer is used. The film may be uniaxially stretched or biaxially stretched.

The film used for the tape material comprising the layer (A) of the cyclic olefin-based polymer and the layer (B) of the polyolefin provided on one or both sides of the layer (A) is a film made of each material. The material may be heat-sealed or may be a film formed of each material by a molding method such as T-die coextrusion. The film may be unstretched or uniaxially or biaxially stretched. By stretching, the MD is particularly easily torn, and a high breaking strength can be provided in the TD direction.

The thickness of the tape comprising the layer (A) of the cyclic olefin polymer alone or the layer (A) of the cyclic olefin polymer and the layer (B) of polyolefin provided on one or both sides of the layer (A) Depends on the application, but 10
１００100 μm, preferably 20-50 μm. The tensile strength in the width direction of the tape is 300 to 2,000 kgf / c.
m ² . If the tensile strength is less than the above range, there is a risk of breakage due to mechanical tension during processing, and if it is greater than the above range, cutting will be poor.

The surface of the film on which the pressure-sensitive adhesive or the adhesive is applied can be preliminarily coated with a primer in order to strengthen the bond between the base film and the pressure-sensitive adhesive or the adhesive.

The surface of the film opposite to the surface to which the adhesive or the adhesive is applied, that is, the back surface, is previously formed with a thin film of rubber or resin in order to reduce the adhesion between the base film and the adhesive or the adhesive. Can be provided on the back surface.
However, in the case of a double-sided tape, the back surface treatment is unnecessary, and a release paper is provided on the adhesive or the adhesive layer instead.

Conventional adhesives can be used as the adhesive. The pressure-sensitive adhesive comprises a pressure-sensitive adhesive base, a tackifier, a filler, a softener, an antioxidant, a curing agent, and the like. The adhesive base may be an elastomer type (for example, natural rubber, styrene-butadiene rubber, polyisoprene rubber, butyl rubber, recycled rubber, silicone rubber, etc.) or a resin type (polyvinyl ethyl or methyl ether, acrylic polymer, etc.). ) Can also be used. As a tackifier,
Rosin resins, terpene resins, petroleum hydrocarbon resins and the like can be used. As the softening agent, a plasticizer, a mineral oil, lanolin, liquid polybutene, liquid polyacrylate, or the like can be used to impart flexibility at low temperatures and smooth release performance. As the filler, a reinforcing agent, an opacifying agent, a coloring agent and the like are used.

As the adhesive, a conventional adhesive such as a film adhesive or a hot melt adhesive can be used. Examples of the film adhesive include phenol resin, melamine resin, epoxy resin, butyral resin, polyimide, and polybenzoimide. Hot melt adhesives include terpene resin, rosin, asphalt, polyvinyl acetate, ethylene-vinyl acetate,
Polyamide, phenoxy resin, ethyl cellulose,
Polyisobutylene-based, petroleum resin-based, and polyester-based ones can be used.

To apply the pressure-sensitive adhesive or the adhesive to the base film, a method of applying the pressure-sensitive adhesive or the adhesive without a solvent by a thermal calendering method, or the method of dissolving the pressure-sensitive adhesive or the adhesive in a solvent by a solvent method. After that, any of the methods of coating can be used. The thickness of the pressure-sensitive adhesive or adhesive layer is 0.0
It is 1 to 1 mm, preferably 0.05 to 0.5 mm.

The adhesive / adhesive tape of the present invention can be used for office work, stationery,
Packing, packaging, seaming, seam sealing, dirt prevention, waterproof, rust prevention, draft prevention, noise prevention, decoration, scattering prevention,
It can be used for home and office use such as sunshine adjustment, carpet cleaner, etc., as well as industrial fixing, temporary fixing, binding, sealing, labeling, identification, insulation, etc.

[0042]

EXAMPLES The present invention will now be described specifically with reference to examples, but the present invention is not limited to these examples.

Example 1 As a cyclic olefin polymer film, a film obtained by forming ZEONEX manufactured by ZEON CORPORATION into a film having a thickness of 30 μm was used. Tensile breaking strength of film (JIS K7127-1989)
Is 600 kgf / cm ² . After performing a corona discharge treatment on the film surface and pretreating the surface wetting tension to 45 dyne / cm, butyl rubber, ester gum,
The adhesive composed of lanolin was treated with a hot calendering method to a pressure of 0.1%.
An adhesive tape was manufactured with a thickness of 03 mm, wound around a paper tube, and cut into a width of 18 mm. This adhesive tape has good film strength, stiffness, flexibility, and adaptability to adherends. Even if stored for a long period of time, the winding does not shift like a bamboo shoot (telescope phenomenon). Was. Also,
Even when stored at 40 ° C. and 90% relative humidity, deterioration was small.

Example 2 A pressure-sensitive adhesive tape was produced in the same manner as in Example 1 except that a 30 μm-thick Apel manufactured by Mitsui Chemicals, Inc. was used as the film of the cyclic olefin polymer. The tensile breaking strength of the film is 800kgf / c
m ² . This pressure-sensitive adhesive tape had good film strength, stiffness, flexibility, and adaptability to adherends, and did not lose its winding even after long-term storage. Also,
Degradation was small even when stored at high temperature and high humidity.

Example 3 As a film, a film obtained by extruding a low-density polyethylene through a T-die and laminating it on one side of Zeonoa, a film using a cyclic olefin polymer manufactured by ZEON CORPORATION, was used. The thickness of the cyclic olefin polymer film is 20 μm,
The thickness of the polyethylene film is 10 μm. An adhesive tape was produced in the same manner as in Example 1 except that this extruded laminate film was used. This pressure-sensitive adhesive tape had good film strength, stiffness, flexibility, and adaptability to adherends, and did not lose its winding even after long-term storage. In addition, deterioration was small even when stored at high temperature and high humidity.

Comparative Example 1 A biaxially stretched polypropylene film having a thickness of 30 μm manufactured by Toyobo Co., Ltd. was used. The tensile breaking strength of the film is 3,100 kgf / cm ² .
An adhesive tape was produced in the same manner as in Example 1 using the above film. This adhesive tape was difficult to cut by hand.

Comparative Example 2 Thickness 30 manufactured by Nichiban Co., Ltd.
A μm cellotape was used. The tensile breaking strength of the film is 1,000 kgf / cm ² , and the hand-cutting property is good.

[0048]

According to the present invention, it is possible to obtain an adhesive tape using a base film which is inexpensive, has no hygroscopicity, and is easily cut off. Can not be seen.

Continued on the front page F-term (reference) 4J004 AA04 AA05 AA07 AA08 AA09 AA10 AA11 AA12 AA13 AA15 AA16 AB01 AB03 CA04 CC02 EA05 4J100 AA02Q AA03Q AA04Q AA07Q AA15Q AA16Q AA17Q AA18 AB13 AB04 ABQ AB14 AR21P BA03Q BA03R BA04Q BA04R BA14Q BA14R BA16Q BA16R BA20Q BA20R BB01Q BB01R CA03 CA04 CA05 CA06 JA03 JA05

Claims (8)

[Claims] 1. A tape comprising a layer (P) of a cyclic olefin polymer alone or a layer (P) of a cyclic olefin polymer and a layer (B) of polyolefin provided on one or both sides of the layer (P). Viscosity on one or both surfaces
Adhesive / adhesive tape with adhesive layer. 2. The adhesive / adhesive tape according to claim 1, wherein the cyclic olefin polymer is a cyclic olefin polymer represented by the following general formula (I) or (II) or a hydrogenated product thereof. Embedded image Wherein a is 0 or 1, b is 0 or a positive integer, k is 0 or 1, R 1 to R 18 and R ′ and R ″ are each independently a hydrogen atom, a halogen atom Or a hydrocarbon group, R 15 to R 18 may be bonded to each other to form a monocyclic or polycyclic ring, and the monocyclic or polycyclic ring may have a double bond;
15 to R16 or R17 and R18 may form an alkylidene group. ) Wherein c and d are 0 or an integer of 1 or more;
And f is 0, 1 or 2, and R21 to R39 are each independently a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group,
An alicyclic hydrocarbon group, an aromatic hydrocarbon group or an alkoxy group, and a carbon atom to which R29 or R30 is bonded;
The carbon atom to which R33 is bonded or the carbon atom to which R31 is bonded may be bonded directly or via an alkylene group having 1 to 3 carbon atoms, and when e = 0 and f =
When it is 0, R35 and R32 or R35 and R39 may combine with each other to form a monocyclic or polycyclic aromatic ring. ) 3. The cyclic olefin-based polymer according to claim 2,
The adhesive / adhesive tape according to claim 1, which is a copolymer of the cyclic olefin described in (1) and a linear or branched α-olefin having 2 to 20 carbon atoms or a hydrogenated product thereof. 4. The cyclic olefin-based polymer according to claim 2,
The adhesive / adhesive tape according to claim 1, which is a copolymer of a cyclic olefin and an aromatic vinyl compound according to (1) or a hydrogenated product thereof. 5. The cyclic olefin-based polymer according to claim 2,
The adhesive / adhesive tape according to claim 1, which is a copolymer of the cyclic olefin according to the above, a linear or branched α-olefin having 2 to 20 carbon atoms, and an aromatic vinyl compound or a hydrogenated product thereof. 6. The cyclic olefin-based polymer according to claim 2,
The adhesive / adhesive tape according to claim 1, which is a copolymer of the cyclic olefin described in (1) and an alkyl (meth) acrylate having 1 to 12 carbon atoms or a hydrogenated product thereof. 7. The adhesive / adhesive tape according to claim 1, wherein the polyolefin is a polyethylene resin or a polypropylene resin. 8. The tape has a tensile strength in the width direction of 300 to 300.
2,000kgf / cm ^TwoThe viscosity according to claim 1, which is
Adhesive tape.