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

Patent metadata

Field	Value
Publication number	US-10519344-B2
Application number	US-201615218303-A
Country	US
Kind code	B2
Filing date	Jul 25, 2016
Priority date	May 3, 2011
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

An adhesive tape, especially for wrapping cables, consisting of 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) 40% to 90% by weight of n-butyl acrylate and/or 2-ethylhexyl acrylate b) 0% to 10% by weight of an ethylenically unsaturated monomer having an acid or acid-anhydride function c) 60% to 10% by weight of one or more ethylenically unsaturated monofunctional monomers different from (a) and (b) d) 0% to 1% by weight of a difunctional or polyfunctional monomer 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

The invention claimed is:

1. A method of using an adhesive tape for jacketing elongate material, said method comprising either passing the adhesive tape in a helical line around the elongate material, or wrapping the elongate material in an axial direction with the adhesive tape, wherein the adhesive tape consists of (A) a textile carrier selected from the group consisting of polyester woven fabrics and (B) a pressure-sensitive adhesive that is applied on at least one side of the textile carrier, the pressure-sensitive adhesive comprising a dried mixture of two components A and B, wherein component A is a dispersion of a polymer and component B is a dispersion of at least one tackifier resin having a softening point of more than 80° C. in accordance with ASTM E28-99 (2009), the polymer being synthesized from:
a) 40% to 90% by weight of n-butyl acrylate and/or 2-ethylhexyl acrylate,
b) 0% to 10% by weight of an ethylenically unsaturated monomer selected from the group consisting of acrylic acid and methacrylic acid, and
c) 60% to 10% by weight of one or more ethylenically unsaturated monofunctional monomers selected from the group consisting of (i) alkyl (meth)acrylates different from (a) and (ii) vinyl acetate,
the total of a)+b)+c) totalling 100% by weight of the polymer,
the pressure-sensitive adhesive comprising in the dried mixture between 15 and 100 parts by weight of the tackifier relative to 100 parts by weight of the polymer, and
the adhesive tape exhibiting unwind force compatibility and cable compatibility in accordance with LV 312-1 (October/2009) and an increased resistance to flagging score in accordance with the TFT method when adhered to a substrate compared to a comparison adhesive tape adhered to the same substrate under the same bonding conditions, said comparison adhesive tape being identical in all respects to the adhesive tape except that the comparison adhesive tape lacks any tackifier resin having a softening point of more than 80° C. in accordance with ASTM E28-99 (2009).

2. The method according to claim 1 ,
wherein
ethyl acrylate forms the monomer (c) or at least part of the monomers (c).

3. The method according to claim 1 ,
wherein
2-ethylhexyl acrylate forms monomer (a).

4. The method according to claim 1 , wherein
the monomer (a) consists of 2-ethylhexyl acrylate and at the same time the monomer (c) or at least part of the monomers (c) consists of ethyl acrylate.

5. The method according to claim 1 , wherein
20 to 80 parts by weight of tackifiers have been added.

6. The method according to claim 1 , wherein
the pressure-sensitive adhesive according to ASTM D3330 has a bond strength to steel of at least 2.5 N/cm (for an adhesive coatweight of 100 g/m 2 on a woven polyester fabric carrier).

Assignees

• Korthals Brigitte
• Boehm Nicolai
• Seitzer Dennis
• Mies Michel
• Tesa Se

Inventors

• Korthals Brigitte
• Böhm Nicolai
• Seitzer Dennis
• Mies Michel

Classifications

• B29L2023/001

  Tubular films, sleeves · CPC title

• Y10T428/2915

  including textile, cloth or fabric · CPC title

• Y10T442/2754

  Pressure-sensitive adhesive · CPC title

• C09J2203/302

  for bundling cables · CPC title

• B29K2067/00

  Use of polyesters {or derivatives thereof}, as moulding material · CPC title