Liner for protection of adhesives

Patent metadata

Field	Value
Publication number	US-9714366-B2
Application number	US-201213719277-A
Country	US
Kind code	B2
Filing date	Dec 19, 2012
Priority date	Dec 22, 2011
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

In the case of a liner for the protection of adhesives, the protective effect is to be enhanced in respect of permeates originating from the environment and also permeates included during winding or stacking and other processing steps. This enhancement is accomplished through provision of a liner which comprises at least one adhesive release layer and at least one layer of a getter material capable of sorbing at least one permeable substance.

First claim

We claim:

1. A release liner for the protection of adhesive, the release liner comprising a first layer contacting a second layer, wherein the first layer of the release liner is an adhesive release layer and the second layer of the release liner is a layer of a getter material capable of sorbing at least one permeable substance, wherein the getter material is selected from the group consisting of calcium oxide, boron trioxide, sodium sulfate, potassium carbonate, copper sulfate, magnesium perchlorate, magnesium sulfate, zeolites and mixtures thereof.

2. The release liner according to claim 1 , wherein the release liner comprises at least one third layer that is a carrier layer.

3. The release liner according to claim 1 , wherein the release liner comprises a barrier layer against one or more specific permeates.

4. The release liner according to claim 1 , wherein the getter material binds a permeate by chemisorption.

5. The release liner according to claim 1 , wherein the layer of getter material is porous and/or foamed.

6. The release liner according to claim 1 , wherein the release liner consists of a third layer that is a carrier layer, the adhesive release layer and the layer of the getter material capable of sorbing at least one permeable substance.

7. An adhesive covered at least on one side and at least partially with the release liner according to claim 1 .

8. The adhesive according to claim 7 , wherein the adhesive before being contacted with the release liner has a permeate content of less than 1000 ppm.

9. A method comprising:
providing an adhesive tape that is at least partially covered on at least one side with a release liner comprising (i) at least one adhesive release layer and (ii) at least one layer of a getter material capable of sorbing at least one permeable substance, wherein the getter material is selected from the group consisting of calcium oxide, boron trioxide, sodium sulfate, potassium carbonate, copper sulfate, magnesium perchlorate, magnesium sulfate, zeolites and mixtures thereof; and
encapsulating optoelectronic arrangements with the adhesive tape.

Assignees

• Tesa Se

Inventors

• Lühmann Bernd
• KEITE-TELGENBüSCHER KLAUS
• Bai Minyoung
• Dollase Thilo

Classifications

• Y10T428/31678

  Of metal · CPC title

• C09J2400/123

  in the substrate · CPC title

• C09J7/403

  characterised by the structure of the release feature · CPC title

• C09J2400/243

  in the substrate · CPC title

• C09J7/22

  Plastics; Metallised plastics · CPC title