Redetachable adhesive strips having slip-resistant grip tabs

• US 6,905,100 B2
• Filed: 12/11/2001
• Issued: 06/14/2005
• Est. Priority Date: 12/22/2000
• Status: Expired due to Term

• Current Assignee: Tesa SE (maxingvest GmbH & Co. KGaA)
• Original Assignee: Tesa AG (maxingvest GmbH & Co. KGaA)
• Inventors: Junghans, Andreas, Wieck, Andreas, Franck, Achim
• Primary Examiner(s): ZIRKER, DANIEL R
• Application Number:
  US10/014,709
• Publication Number:
  US 20020119309A1
• Time in Patent Office: 1,281 Days
• Field of Search: 428/354, 428/355.BL, 428/343, 248/205.3, 248/303, 427/208
• US Class Current: 248/205.3
• CPC Class Codes: C09J 2301/308 the adhesive tape or sheet losing adhesive strength when being stretched, e.g. stretch adhesive
• CPC Class Codes: C09J 7/20 characterised by their carriers
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2848 Three or more layers
• CPC Class Codes: Y10T 428/2883 including addition polymer of diene monomer [e.g., SBR, SIS, etc.]

Abstract

An adhesive sheet strip, single-sidedly or double-sidedly pressure-sensitively adhering, redetachable by extensive stretching pulling on a grip tab in the direction of the bond plane, wherein the grip tab is such that it has a static frictional force Fs of at least 170 cN.

Claims

1. A single -or double-sided pressure sensitive adhesive film strip, having a grip tab and being redetachable from a substrate to which it is adhered by pulling on the grip tab to extensively stretch the film strip, wherein the surface of the grip tab is coated, etched, around or embossed to increase its static frictional force Fs, as measured in accordance with DIN 53375, to at least 170 cN.

2. The strip as claimed in claim 1, wherein said static frictional force Fs is increased to at least 200 cN.

3. The strip as claimed in claim 1, wherein the grip tab has said increased static frictional force on one or both sides.

4. The strip as claimed in claim 1, wherein the grip tab is coated with a deformable composition, or a low-tack composition, or both.

5. The strip as claimed in claim 4, wherein said deformable composition, low tack composition, or both are selected from the group consisting of silicones, ethylene-vinyl acetate copolymers, polyurethane compounds and combinations thereof.

6. The strip as claimed in claim 1, wherein the grip tab is formed of ethylene-vinyl acetate or polyethylene sheet material.

7. A method for redetachable bonding with an adhesive strip where the bond is broken by pulling on a grip tab on the adhesive strip to extensively stretch the adhesive strip, without slippage from the grip tab, wherein said adhesive strip is an adhesive strip according to claim 1.