Exterior trim part

Patent metadata

Field	Value
Publication number	US-10081396-B2
Application number	US-201515306234-A
Country	US
Kind code	B2
Filing date	Apr 17, 2015
Priority date	Apr 29, 2014
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

In accordance with a first aspect of the invention, the exterior trim part for a vehicle comprises a fibrous porous structural layer. The exterior trim part further comprises at least one at least sectional perforated film layer, which is made of thermoplastic polyurethane with a melting temperature according to DSC of at least 140° C. The film layer is materially connected to the fibrous porous structural layer, at least in sections.

First claim

What is claimed is:

1. An exterior trim part for a vehicle, comprising:
a fibrous porous structural layer; and
at least one perforated film layer materially connected to said fibrous porous structural layer, said at least one perforated film layer being made of non-foamed thermoplastic polyurethane with a melting temperature according to DSC of at least 140° C.

2. The exterior trim part according claim 1 , wherein the fibrous porous structural layer consists of bicomponent filaments with a CoPET first polymer with a melting temperature of at least 150° C., preferably at least 190° C., and a PET second polymer with a melting temperature of at least 240° C.

3. The exterior trim part according claim 1 , wherein the fibrous porous structural layer consists of bicomponent staple fibres with a CoPET first polymer with a melting temperature of at least 150° C., preferably at least 190° C., and a PET second polymer with a melting temperature of at least 240° C.

4. The exterior trim part according claim 1 , wherein the fibrous porous structural layer comprises first bicomponent staple fibres with a CoPET first polymer with a melting temperature of at least 150° C., preferably at least 190° C., and a PET second polymer with a melting temperature of at least 240° C.

5. The exterior trim part according claim 4 , wherein the fibrous porous structural layer further comprises second bicomponent staple fibres with a CoPET first polymer with a melting temperature of at least 20° C. lower than the melting temperature of the first polymer of the first bicomponent staple fibres.

6. The exterior trim part according to claim 4 , wherein the fibrous porous structural layer further comprises PET staple fibres with a melting temperature of at least 240° C. or CoPET staple fibres.

7. The exterior trim part according claim 1 , wherein the fibrous porous structural layer comprises a mixture of CoPET staple fibres with a melting temperature of at least 150° C., preferably at least 190° C., and PET staple fibres with a melting temperature of at least 240° C.

8. The exterior trim part according to claim 2 , wherein the first polymer forms the sheath of a filament, wherein the PET second polymer forms the core of the filament.

9. The exterior trim part according to claim 1 , wherein the thermoplastic polyurethane film is based on polyether or polyester.

10. The exterior trim part according to claim 1 , wherein the exterior trim part has a total thickness between 1.5 and 10 mm and has an airflow resistance (AFR) in the direction of thickness between 1,000 to 4,500 N·s/m 3 .

11. The exterior trim part according to claim 1 , wherein the perforated film layer is only partially perforated.

12. The exterior trim part according to claim 1 , further comprising a scrim layer connected to the at least one perforated film layer.

13. A method of using an exterior trim part according to claim 1 as an engine bay covering panel, a top of an engine, a side of an engine, an undercover for an engine, an oil pan cover, an under engine shield, a fire wall, an at least partial outer dash panel covering, an air guiding panel located behind a cooler of the engine bay or a vehicle's underbody covering panel, an outer wheel arch liner, or as an automotive exterior trim part.

14. The exterior trim part according to claim 1 , wherein the non-foamed thermoplastic polyurethane is elastomeric.

15. The exterior trim part according to claim 3 , wherein the first polymer forms the sheath of a staple fibre, wherein the PET second polymer forms the core of the staple fibre.

16. An exterior trim part for a vehicle, comprising:
a fibrous porous structural layer; and
at least one air permeable film layer materially connected to said fibrous porous structural layer, said at least one air permeable film layer being made of non-foamed thermoplastic polyurethane with a melting temperature according to DSC of at least 140° C.

17. The exterior trim part according claim 16 , wherein the fibrous porous structural layer comprises first bicomponent staple fibres with a CoPET first polymer with a melting temperature of at least 150° C., preferably at least 190° C., and a PET second polymer with a melting temperature of at least 240° C.; and
wherein the fibrous porous structural layer further comprises second bicomponent staple fibres with a CoPET first polymer with a melting temperature of at least 20° C. lower than the melting temperature of the first polymer of the first bicomponent staple fibres.

18. The exterior trim part according claim 16 , wherein the fibrous porous structural layer comprises first bicomponent staple fibres with a CoPET first polymer with a melting temperature of at least 150° C., preferably at least 190° C., and a PET second polymer with a melting temperature of at least 240° C.; and
wherein the fibrous porous structural layer further comprises PET staple fibres with a melting temperature of at least 240° C. or CoPET staple fibres.

19. The exterior trim part according claim 16 , wherein the fibrous porous structural layer comprises a mixture of CoPET staple fibres with a melting temperature of at least 150° C., preferably at least 190° C., and PET staple fibres with a melting temperature of at least 240° C.

20. The exterior trim part according to claim 16 , wherein the air permeable film layer is only partially air permeable.

Assignees

• Autoneum Man Ag

Inventors

• Baudry Fabien
• Krause Wenzel
• Marotta Luca

Classifications

• G10K11/162

  Selection of materials · CPC title

• B29K2075/00

  Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material · CPC title

• B62D35/02

  Streamlining the undersurfaces {(B62D35/005, B62D35/007, B62D35/008 take precedence)} · CPC title

• B60R13/0861

  for covering undersurfaces of vehicles, e.g. wheel houses · CPC title

• B32B2262/14

  Mixture of at least two fibres made of different materials · CPC title