Adhesive tape for jacketing elongate material such as especially cable looms and jacketing method

Patent metadata

Field	Value
Publication number	US-9725622-B2
Application number	US-201213458354-A
Country	US
Kind code	B2
Filing date	Apr 27, 2012
Priority date	May 3, 2011
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

An adhesive tape has a preferably textile carrier and of a pressure-sensitive adhesive which is applied on at least one side of the carrier and is in the form of a dried polymer dispersion. The polymer being synthesized from (a) 5% to 25% by weight, preferably 10% to 22% by weight, of ethylene, (b) 30% to 69% by weight, preferably 40% to 60% by weight, of alkylacrylic ester having C 4 to C 12 alkyl radicals, (c) 20% to 55% by weight, preferably 28% to 38% by weight, of vinyl acetate, (d) 0% to 10% by weight of other ethylenically unsaturated compounds, and the pressure-sensitive adhesive comprising between 15 and 100 parts by weight of a tackifier (based on the mass of the dried polymer dispersion).

First claim

We claim:

1. A method for jacketing an elongate material, the method comprising:
providing an adhesive tape consisting of a textile carrier and a pressure-sensitive adhesive by applying the pressure-sensitive adhesive, in a form of a dried polymer dispersion, onto at least one side of the textile carrier, wherein the polymer is synthesized from:
a) 5% to 25% by weight of ethylene,
b) 30% to 69% by weight of alkylacrylic ester having C 4 to C 12 alkyl radicals,
c) 20% to 55% by weight of vinyl acetate, and
d) 0% to 10% by weight of other ethylenically unsaturated compounds,
wherein the pressure-sensitive adhesive comprises between 30 and 50 parts by weight of a tackifier, based on the mass of the dried polymer dispersion, wherein the tackifier used is tackifier resins based on terpene phenols and/or rosin esters having a softening point of more than 80° C. and equal to or less than 99° C., in accordance with ASTM E28-99 (2009); and
jacketing the elongate material with the adhesive tape by passing the adhesive tape in a helical line around the circumference of the elongate material such that the adhesive tape is bonded around the elongate material,
wherein the adhesive tape has an unwinding force value in the range from about 3 to 9 N/cm, at a take-off speed of 30 m/min and a threshold flagging time value of at least 2001 minutes.

2. The method according to claim 1 , wherein monomers (d) include alkyl (meth)acrylates, C 1 to C 20 alkyl (meth)acrylates with the exception of the monomers forming (b), aromatic vinyl monomers, α-methylstyrene and vinyltoluene, C 1 to C 10 hydroxyalkyl (meth)acrylates, hydroxyethyl or hydroxypropyl (meth)acrylate, vinyl esters of carboxylic acids containing up to 20 carbon atoms, vinyl ethers of alcohols containing up to 10 carbon atoms, vinyl halides, acid amides, and unsaturated hydrocarbons having 3 to 8 carbon atoms.

3. The method according to claim 1 , wherein monomer (b) comprises n-butyl acrylate and/or 2-ethylhexyl acrylate.

4. The method according to claim 1 , wherein a di- or polyfunctional monomer is added to the polymer as monomer (e), at 0% to 2% by weight.

5. The method according to claim 1 , wherein the pressure-sensitive adhesive further comprises 20 to 80 parts by weight of tackifiers.

6. The method according to claim 5 , wherein the softening point is more than 83° C. in accordance with ASTM E28-99 (2009).

7. The method according to claim 5 , wherein the softening point is more than 90° C. in accordance with ASTM E28-99 (2009).

8. The method according to claim 1 , wherein the polymer is synthesized from 10% to 22% by weight of ethylene.

9. The method according to claim 1 , wherein the polymer is synthesized from 40% to 60% by weight of alkylacrylic ester.

10. The method according to claim 1 , wherein the polymer is synthesized from 28% to 38% by weight of vinyl acetate.

11. The method according to claim 1 , wherein a di- or polyfunctional monomer is added to the polymer as monomer (e), at 0% to 1% by weight.

12. The method according to claim 1 , wherein the carrier is a woven fabric.

13. The method according to claim 1 , wherein the carrier is a woven polyester fabric.

14. The method according to claim 1 , further comprising:
preparing the polymer dispersion of the pressure-sensitive adhesive by emulsion polymerization prior to applying the polymer dispersion onto the textile carrier.

15. A method for jacketing an elongate material, the method comprising:
providing an adhesive tape consisting of a textile carrier and a pressure-sensitive adhesive by applying the pressure-sensitive adhesive, in a form of a dried polymer dispersion, onto at least one side of the textile carrier, wherein the polymer is synthesized from:
a) 5% to 25% by weight of ethylene,
b) 30% to 69% by weight of alkylacrylic ester having C 4 to C 12 alkyl radicals,
c) 20% to 55% by weight of vinyl acetate, and
d) 0% to 10% by weight of other ethylenically unsaturated compounds,
wherein the pressure-sensitive adhesive comprises between 30 and 50 parts by weight of a tackifier, based on the mass of the dried polymer dispersion, wherein the tackifier used is tackifier resins based on terpene phenols and/or rosin esters having a softening point of more than 80° C. and equal to or less than 99° C., in accordance with ASTM E28-99 (2009); and
jacketing the elongate material with the adhesive tape by wrapping the adhesive tape in an axial direction around the circumference of a portion of the elongate material,
wherein the adhesive tape has an unwinding force value in the range from about 3 to 9 N/cm, at a take-off speed of 30 m/min and a threshold flagging time value of at least 2001 minutes.

Assignees

• Korthals Brigitte
• Böhm Nicolai
• Seitzer Dennis
• Tesa Se

Inventors

• Korthals Brigitte
• Böhm Nicolai
• Seitzer Dennis

Classifications

• Y10T428/2933

  Coated or with bond, impregnation or core · CPC title

• Y10T428/2883

  including addition polymer of diene monomer [e.g., SBR, SIS, etc.] · CPC title

• Y10T442/387

  Vinyl polymer or copolymer sheet or film [e.g., polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, etc.] · CPC title

• C09J2467/006

  in the substrate · CPC title

• C09J2433/00

  Presence of (meth)acrylic polymer · CPC title