Carrier reinforced heat activated adhesive compounds

Patent metadata

Field	Value
Publication number	US-9365748-B2
Application number	US-201013146709-A
Country	US
Kind code	B2
Filing date	Jan 18, 2010
Priority date	Jan 30, 2009
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

The invention relates to an adhesive film comprising a fleece carrier (T) and two layers made of heat activated adhesive compounds ( 1, 2 ) arranged on both sides of the fleece carrier, characterized in that both adhesive compounds ( 1, 2 ) are permeated in the fleece carrier (permeation regions T 1 and T 2 ) such that a total of between 20% and 92% of the fiber intermediate volume of the fleece carrier (T) is saturated by the adhesive compound, providing that the adhesive compounds (T 1 , T 2 ) permeated on both sides of the fleece carrier (T 1 , T 2 ) each make up at least 10% of the fiber intermediate volume of the fleece carrier (T) in the composition.

First claim

The invention claimed is:

1. An adhesive sheet comprising a fleece carrier having two sides and a layer of heat-activatable adhesive on each of the two sides of the fleece carrier, wherein both adhesives have penetrated the fleece carrier such that a total of between 40% and 80% of the fiber interstitial volume of the fleece carrier in the adhesive sheet assembly is saturated with adhesive, with the proviso that each adhesive has penetrated a side of the fleece carrier so as to make up at least 10% of the fiber interstitial volume of the fleece carrier in the assembly.

2. The adhesive sheet of claim 1 , wherein the adhesives on both sides of the fleece carrier are identical.

3. The adhesive sheet of claim 1 , wherein each adhesive has penetrated a side of the fleece carrier so as to make up an equal fraction of the fiber interstitial volume of the fleece carrier in the assembly.

4. An adhesive sheet comprising a fleece carrier having two sides and a layer of heat-activatable adhesive on each of the two sides of the fleece carrier, wherein both adhesives have penetrated the fleece carrier such that a total of between 40% and 80% of the layer thickness of the fleece carrier is saturated with the adhesive, with the proviso that on each side of the fleece carrier at least 10% of the fleece carrier thickness is saturated.

5. The adhesive sheet of claim 1 , wherein each heat-activatable adhesive is an adhesive based on one or more thermoplastic polymers.

6. A method of adhesively bonding metal to plastic, glass or metal, said method comprising bonding said metal to said plastic, glass or metal with a heat-activatable adhesive sheet of claim 1 .

7. The method of claim 6 , which comprises adhesively bonding components of electronic devices.

8. An electronics device comprising components adhesively bonded with a heat-activatable adhesive sheet of claim 1 .

9. The adhesive sheet of claim 1 , wherein the heat-activatable adhesive is based on a thermoplastic polymer selected from the group consisting of polyesters, copolyesters, polyamides, copolyamides, and thermoplastic polyurethanes.

Assignees

• Husemann Marc
• Koop Matthias
• Tesa Se

Inventors

• Husemann Marc
• Koop Matthias

Classifications

• B32B5/022

  Non-woven fabric · CPC title

• B32B27/20

  using fillers, pigments, thixotroping agents · CPC title

• B32B2262/0253

  Polyolefin fibres · CPC title

• B32B27/36

  comprising polyesters · CPC title

• B32B2262/0261

  Polyamide fibres · CPC title