Multilayer adhesive bonding element

Patent metadata

Field	Value
Publication number	US-10183476-B2
Application number	US-201715783531-A
Country	US
Kind code	B2
Filing date	Oct 13, 2017
Priority date	Oct 21, 2016
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

Method for bonding by wrapping a medium which expands transversely to a winding with an adhesive tape, in which:
an adhesive tape is unrolled from an adhesive tape roll, the unrolled adhesive tape is provided on one side of a carrier film ( 1 ) with an adhesive cement layer ( 2 ) and on an opposite side partially with a separating agent layer ( 3 ), wherein the area covered by the separating agent layer ( 3 ) takes up not more than 50% of the total area of the carrier reverse side, wherein at least the surface of the side of the carrier film ( 1 ) which is furnished with a separating agent layer ( 3 ) is etched, the adhesive tape is wound around the medium which expands transversely to a winding, so that at least a portion of the adhesive tape is bonded to a lower winding ply by the adhesive cement layer ( 2 ).

First claim

The invention claimed is:

1. A method for bonding by wrapping a medium which expands transversely to a winding with an adhesive tape, the method comprising:
unrolling the adhesive tape from an adhesive tape roll, wherein the unrolled adhesive tape comprises a carrier film with a first side having an adhesive cement layer provided thereon and an opposite second side having a separating agent layer provided at least partially thereon, wherein an area of the second side of the carrier film covered by the separating agent layer is no more than 50% of a total area of the second side of the carrier film, wherein at least a surface of the second side of the carrier film has been etched; and
winding the adhesive tape around the medium that expands transversely to the winding, so that at least a portion of the adhesive tape is bonded to the adhesive cement layer on a lower winding ply.

2. The method according to claim 1 , wherein the second side of the carrier film is not furnished with another or additional layer.

3. The method according to claim 1 , wherein the adhesive tape is wound around the medium in several winding plies which are bonded one on top of the other.

4. The method according to claim 1 , wherein trichloroacetic acid (Cl 3 C—COOH) or trichloroacetic acid in combination with inert crystalline compounds were utilized to etch at least the second side of the carrier film.

5. The method according to claim 1 , wherein an adhesive cement of the adhesive cement layer is selected from the group consisting of adhesive cements based on natural or synthetic rubber.

6. A device comprising:
a medium whose size is variable transversely to a winding; and
an adhesive tape that is wound onto itself around the medium transversely to the winding with a carrier film of the adhesive tape, wherein an adhesive cement layer is applied to a first side of the carrier film and a plasma-treated separating agent layer is applied to an opposite second side of the carrier film such that an area of the second side of the carrier film covered by the separating agent layer is no more than 50% of a total area of the second side of the carrier film.

7. The device according to claim 6 , wherein the adhesive tape is bonded in several winding plies one on top of the other.

8. The device according to claim 6 , wherein the adhesive tape includes at least one filament which increases the tensile strength thereof.

9. The device according to claim 6 , wherein a plurality of filaments is provided in the adhesive tape.

10. The device according to claim 6 , wherein a separating agent in the separating agent layer originates from the group consisting of surfactant release systems based on long-chain alkyl groups such as stearyl sulfosuccinates or stearyl sulfosuccinamates; polymers selected from the group consisting of polyvinylstearyl carbamates, polyethylene imine stearyl carbamides, chromium complexes of C14-C28 fatty acids and stearyl copolymers or based on acrylic polymers with perfluorinated alkyl groups; silicones or fluorosilicone compounds.

11. The device according to claim 6 , wherein an adhesive cement in the adhesive cement layer originates from the group consisting of adhesive cements based on natural or synthetic rubber.

12. An applicator comprising:
adhesive tape roll and a device for unwinding an adhesive tape from the adhesive tape roll, wherein the adhesive tape unwound from the adhesive tape roll comprises a carrier film having a first side with an adhesive cement layer provided thereon and an opposite second side with a separating agent layer provided thereon, wherein the second side has been etched and has an area covered by the separating agent layer of no more than 50% of a total area of the second side of the carrier film; and
a plasma nozzle directed at the separating agent layer of the unwound adhesive tape.

13. The applicator according to claim 12 , further comprising a cutting device for the adhesive tape.

14. The applicator according to claim 12 , further comprising a suction device for reaction byproducts created during a plasma treatment.

Assignees

• Tesa Se

Inventors

• Kipke Jennifer
• Nagel Christoph
• Sellin Jannik

Classifications

• C09J1/00

  Adhesives based on inorganic constituents · CPC title

• H02K3/40

  for high voltage, e.g. affording protection against corona discharges · CPC title

• B29C53/8083 Primary

  Improving bonding of wound materials or layers · CPC title

• B32B37/12

  characterised by using adhesives · CPC title

• C09J7/20

  characterised by their carriers · CPC title