Method for manufacturing a vehicle interior trim part intended for covering an airbag

Patent metadata

Field	Value
Publication number	US-10040227-B2
Application number	US-201615086240-A
Country	US
Kind code	B2
Filing date	Mar 31, 2016
Priority date	Mar 31, 2015
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A method for manufacturing a vehicle interior trim part intended for covering an airbag. The method includes the steps of: a) providing a support having an opening; b) providing a chute channel defining a passage to guide deployment of the airbag and integral with a cover member; c) fastening the chute channel to the support by a continuous peripheral bead of adhesive extending along the periphery of the opening; d) bringing a mold element to face the support and chute channel so as to define a closed cavity; and e) injecting foam into the cavity.

First claim

The invention claimed is:

1. A method for manufacturing a vehicle interior trim part intended for covering an airbag, comprising the steps of:
a) providing a support having an opening;
b) providing a chute channel defining a passage to guide deployment of the airbag and a cover member adapted to cover the passage and fastened onto said chute channel;
c) fastening the chute channel to the support;
d) bringing a mold element to face the support and chute channel, so as to define a closed cavity; and
e) injecting foam into the cavity,
wherein during step c), the chute channel is fastened to the support by a continuous peripheral bead of adhesive extending along the periphery of the opening.

2. The method according to claim 1 , comprising, between step b) and step c), a step of applying onto the chute channel the adhesive intended for forming the continuous peripheral bead of adhesive.

3. The method according to claim 2 , wherein the adhesive intended for forming the continuous peripheral bead of adhesive is applied to a peripheral flange of the chute channel extending substantially perpendicularly to a channel wall, of the chute channel, that is substantially tubular and defines the passage.

4. The method according to claim 1 , wherein the adhesive used to form the continuous peripheral bead of adhesive in step c) comprises a polyolefin adhesive.

5. The method according to claim 1 , wherein the adhesive used to form the continuous peripheral bead of adhesive in step c) comprises a polyurethane adhesive.

6. The method according to claim 1 , wherein the adhesive used to form the continuous peripheral bead of adhesive in step c) is hot melt.

7. The method according to claim 1 , wherein the adhesive used to form the continuous peripheral bead of adhesive in step c) is curable.

8. The method according to claim 1 , wherein the support provided in step a) and/or the chute channel provided in step b) comprises polypropylene.

9. A vehicle interior trim part intended for covering an airbag, comprising:
a support having an opening;
a chute channel defining a passage to guide deployment of the airbag and a cover member adapted to cover the passage and fastened to said chute channel thereon, said chute channel being fastened to the support; and
a foam layer extending over the support and chute channel at the opening;
wherein the chute channel is fastened to the support by a continuous peripheral bead of adhesive extending along the periphery of the opening.

10. The vehicle interior trim part according to claim 9 , wherein:
the chute channel comprises a substantially tubular channel wall defining the passage, and a peripheral flange extending substantially perpendicularly to the channel wall; and
the support and the peripheral flange of the chute channel together define a peripheral recess in which the continuous peripheral bead of adhesive lies.

11. The vehicle interior trim part according to claim 10 , wherein the support and the peripheral flange of the chute channel further define a radial channel having a first end opening into the peripheral recess.

12. The vehicle interior trim part according to claim 9 , wherein the continuous peripheral bead of adhesive comprises a polyolefin adhesive.

13. The vehicle interior trim part according to claim 9 , wherein the support and/or the chute channel comprises polypropylene.

14. The vehicle interior trim part according to claim 9 , wherein the support and/or the chute channel is reinforced with fibers.

15. The vehicle interior trim part according to claim 9 , wherein during step b) the chute channel is provided with a cover member that is integral with the chute channel.

Assignees

• Faurecia Interieur Ind

Inventors

• Lard Frédéric

Classifications

• B29C44/14

  the preformed part being a lining {(B29C44/1209 takes precedence)} · CPC title

• B29C44/1257 Primary

  Joining a preformed part and a lining, e.g. around the edges · CPC title

• B60R2021/2172

  the cover being connected to the surrounding part and to the module, e.g. floating mounts · CPC title

• B29C65/4815

  Hot melt adhesives, e.g. thermoplastic adhesives · CPC title

• B29L2031/3038

  Air bag covers · CPC title