Process for molding cover materials for seating applications

Patent metadata

Field	Value
Publication number	US-11945349-B2
Application number	US-201915733934-A
Country	US
Kind code	B2
Filing date	Jun 3, 2019
Priority date	Jun 1, 2018
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

A seat trim cover for an automotive seat is formed into a 3-dimensional shape by compression molding a laminated moldable foam in a 3-dimensional. The laminated moldable foam comprises at least a layer of cellular polyurethane foam compression moldable in a temperature range of about 220° F. to about 260° F. The 3-dimensional mold is heated to a temperature range of about 150° F. to about 320° F. The layer of cellular foam is adhered to a cover material layer and pre-cut into a pre-laminated blank prior to molding into the 3-dimensional shape. Optionally, seat heaters or other components can be integrated with the laminated foam prior to compression molding the seat trim cover.

First claim

What is claimed is:

1. A seat trim cover for a vehicle seat, comprising:
a moldable polyurethane cellular foam interlayer having an upper surface and a lower surface, the moldable polyurethan cellular foam interlayer formulated to be moldable at a temperature between about 220° F. to about 260° F.;
a cover material having a lower surface, said lower surface adhered to said upper surface of said moldable polyurethane cellular foam interlayer to form a laminate blank;
said cover material comprising one or more of a vinyl, fabric, and/or leather; and
a scrim backing adhered to the lower surface of said moldable foam interlayer wherein said scrim backing is one of a woven or a non-woven fabric;
wherein said laminate blank is formed into a 3-dimensional shape.

2. The seat trim cover as set forth in claim 1 , wherein:
said cover material is adhered to said upper surface of said foam interlayer using a one part urethane adhesive, a two part urethane adhesive, or flame lamination.

3. The seat trim cover as set forth in claim 2 , further including:
a seat heater adhered between said lower surface of said cover material and said upper surface of said moldable foam interlayer.

4. The seat trim cover as set forth in claim 3 , further including:
a foam liner adhered between said lower surface of said cover material and said seat heater.

5. The seat trim cover as set forth in claim 1 , wherein:
said scrim backing is adhered to said lower surface of said foam interlayer using a one part urethane adhesive, a two part urethane adhesive, or flame lamination.

6. The seat trim cover as set forth in claim 5 , wherein:
said trim cover has at least one molded feature having an appearance of a sewn seam.

7. The seat trim cover as set forth in claim 6 , wherein:
said trim cover has at least a portion molded into a curved profile.

8. The seat trim cover as set forth in claim 7 , wherein:
said trim cover has at least one embossed feature molded into said trim cover.

9. A trim cover for a vehicle component, comprising:
a laminated assembly having at least a cover material adhered to a moldable polyurethane cellular foam interlayer to form said laminated assembly;
said moldable polyurethane cellular foam formulated to be moldable at a temperature in a range of about 220° F. to about 260° F.;
said cover material comprises at least two pieces sewn together along at least one edge of each of said at least two pieces to form a sewn cover material having at least one sew seam;
said laminated assembly comprises at least said sewn cover material, and
said edges of said at least one sew seam are encased within said trim cover;
wherein said laminated assembly has a 3-dimensional shape having at least one molded feature.

10. The trim cover as set forth in claim 9 , wherein:
said trim cover is one of a seat cushion trim cover, a seat back trim cover, a seat back panel, a seat back pocket, a head restraint cover, an armrest cover, or a seat belt pocket.

11. The trim cover as set forth in claim 10 , wherein:
said cover material comprises one or more of a vinyl, fabric, and/or leather.

12. The trim cover as set forth in claim 11 , wherein:
said laminated assembly includes at least one or more of a seat heater, a sensor, an electrical circuit, a fastener, a scrim backing layer, and/or a foam lining.

13. The trim cover as set forth in claim 9 , further comprising:
a pocket attached to said cover material.

14. The trim cover as set forth in claim 13 , wherein:
said pocket comprises at least one pocket edge; and said at least one pocket edge is sewn within said at least one sew seam between said at least two pieces of cover material.

15. The trim cover as set forth in claim 13 , wherein:
said pocket extends from one edge of said cover material to an opposing edge of said cover material; and
at least one edge of said pocket is sewn to and/or adhered to said cover material.

16. A padded assembly, comprising:
a molded trim cover having a 3-dimensional shape and releasably coupled with a base foam pad;
said molded trim cover comprising:
a lower surface of a cover material adhered to an upper surface of a moldable polyurethane cellular foam interlayer to form a laminate blank;
said cover material comprising one or more of a vinyl, fabric, and/or leather;

said base foam pad comprising a cellular polyurethane foam formulated to be moldable at a temperature between about 220° F. to about 260° F.;
said molded trim cover having at least one loop fastener of a hook and loop fastener system;
said base foam pad having at least one hook fastener of said hook and loop fastener system;
wherein said at least one loop fastener is releasably coupled with said at least one hook fastener, and
said at least one loop fastener comprises one or more of a non-woven scrim backing layer adhered to said moldable polyurethane cellular foam interlayer, said at least one loop fastener adhered to a lower surface of said laminate blank, and/or said at least one loop fastener adhered to a lower surface of said molded trim cover.

17. The padded assembly as set forth in claim 16 , wherein:
said padded assembly is one of a seat cushion, a seat back, a seat head restraint, or a seat armrest of a vehicle seat assembly.

18. The padded assembly as set forth in claim 17 , wherein:
said laminate blank includes at least one or more of a seat heater, a sensor, an electrical circuit, a scrim backing layer, a fastener, and/or a foam lining.

Assignees

• Magna Seating Inc

Inventors

• Kozlowski Eric
• Prasatek Craig
• Vivian Andrew M

Classifications

• B60N2/5875

  by adhesion, e.g. gluing · CPC title

• B60N2/5891 Primary

  characterised by the manufacturing process; manufacturing seat coverings not otherwise provided for · CPC title

• B29C43/003

  characterised by the choice of material · CPC title

• B29C43/18

  incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles {(B29C43/206 takes precedence)} · CPC title

• B29C43/203

  Making multilayered articles · CPC title