Method for closing a hole with a diecut

Patent metadata

Field	Value
Publication number	US-10828841-B2
Application number	US-201414913410-A
Country	US
Kind code	B2
Filing date	Jul 23, 2014
Priority date	Aug 23, 2013
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A blank and/or diecut permanently closes of holes in metal sheets and/or in plastic parts. The blank and/or diecut comprises at least one carrier having a laminate of at least two polymeric films, wherein the lower film has a basis weight of at least 1.5 kg/m2 and the side of the lower film opposite the upper film has an applied adhesive thereon.

First claim

The invention claimed is:

1. A method comprising:
applying a diecut to a hole such that the hole is covered by the diecut; and
causing temperatures of 120° C. to 200° C. to act on the diecut so that an applied adhesive cures and closes the hole,
wherein:
the diecut comprises an upper polymeric film and a lower polymeric film;
the lower polymeric film comprises a polyolefin and a mineral filler;
the lower polymeric film has a basis weight between 1.5 and 3.9 kg/m 2 ;
the lower polymeric film has a thickness between 600 and 3,500 μm;
the lower polymeric film is disposed between the upper polymeric film and the applied adhesive; and
the applied adhesive is a curable adhesive.

2. The method according to claim 1 , wherein the upper polymeric film consists of polyethylene terephthalate.

3. The method according to claim 1 , wherein the upper polymeric film has a thickness between 15 and 350 μm.

4. The method according to claim 1 , wherein the cured adhesive is a self-adhesive and the self-adhesive is an acrylate-based self-adhesive composition.

5. The method according to claim 1 , wherein the diecut is applied concentrically over the hole.

6. The method according to claim 1 , wherein:
the diecut further comprises a first contour;
the edge of the hole comprises a second contour; and
the first contour and the second contour correspond.

7. The method according to claim 1 , wherein:
the diecut further comprises a first contour;
the edge of the hole comprises a second contour; and
the first contour and the second contour correspond such that the diecut overlaps the hole by between 1 and 20 mm.

8. The method according to claim 1 , wherein the lower polymeric film has a basis weight of between 1.5 and 2.5 kg/m 2 .

9. The method according to claim 3 , wherein the thickness of the upper polymeric film is between 15 and 150 μm.

10. The method according to claim 1 , wherein the thickness of the lower polymeric film is between 1,700 and 3,500 μm.

11. The method according to claim 1 , wherein the curable adhesive is a structural adhesive.

12. The method according to claim 11 , wherein the curable adhesive is a reactive, heat-activatable adhesive composition.

13. The method according to claim 12 , wherein the curable adhesive comprises a nitrile rubber and a phenolic resin.

14. The method according to claim 1 , wherein the curable adhesive is disposed between the lower polymeric film and a self-adhesive.

15. The method according to claim 1 , wherein the lower polymeric film is 0.015 to 12 mm thick.

16. The method according to claim 1 , wherein the lower polymeric film further comprises 8 to 20 vol % of an oil.

17. The method according to claim 1 , wherein a metal foil is disposed between the upper polymeric film and the lower polymeric film.

18. The method according to claim 1 , wherein the upper polymeric film further comprises a filament.

19. The method according to claim 1 , wherein the lower polymeric film further comprises a filament.

20. The method according to claim 2 , wherein:
the upper polymeric film has a thickness between 15 and 350 μm; and
the cured adhesive is a self-adhesive and the self-adhesive is an acrylate-based self-adhesive composition.

Assignees

• Tesa Se

Inventors

• Niemeyer Thomas
• Stricker Rainer

Classifications

• B60R13/06 Primary

  Sealing strips (sealing arrangements for vehicle windows, windscreens, non-fixed roofs, doors, or similar devices B60J10/00) · CPC title

• B29C73/10

  using patches sealing on the surface of the article (B29C73/14 takes precedence) · CPC title

• B29L2031/30

  Vehicles, e.g. ships or aircraft, or body parts thereof {(vanes or blades B29L2031/08, air bags B29L2022/027)} · CPC title

• B29C65/48 Primary

  using adhesives {, i.e. using supplementary joining material; solvent bonding} · CPC title

• B29C65/02

  by heating, with or without pressure · CPC title