Method of making vehicle headrest having cloth face bonded to plastic shell

• US 5,783,015 A
• Filed: 09/22/1995
• Issued: 07/21/1998
• Est. Priority Date: 09/22/1995
• Status: Expired due to Fees

• Current Assignee: Lear Automotive Dearborn, Incorporated (Lear Corporation)
• Original Assignee: UT Automotive Dearborn, Inc.
• Inventors: Hannert, Lynn F., O'Brien, Timothy F.
• Primary Examiner(s): CRISPINO, RICHARD D
• Application Number:
  US08/532,370
• Time in Patent Office: 1,033 Days
• Field of Search: 156/213, 156/228, 156/251, 156/291, 156/380.7, 156/380.8, 156/248, 156/267, 156/293, 156/308.2, 297/391, 297/396
• US Class Current: 156/213
• CPC Class Codes: B29C 44/1257 Joining a preformed part and a lining, e.g. around the edges
• CPC Class Codes: B29C 44/14 the preformed part being a lining B29C44/1209 takes precedence
• CPC Class Codes: B29C 65/04 Dielectric heating, e.g. high-frequency welding , i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
• CPC Class Codes: B29C 65/743 using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc B29C65/2046 takes precedence
• CPC Class Codes: B29C 65/7441 for making welds and cuts of other than simple rectilinear form
• CPC Class Codes: B29C 66/305 Decorative or coloured joints optical properties of the material of the parts to be joined B29C66/733
• CPC Class Codes: B29C 66/61 Joining from or joining on the inside for making tubes by bending sheets and joining from the inside B29C53/387
• CPC Class Codes: B29C 66/63 Internally supporting the article during joining B29C66/49 takes precedence
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/7234 comprising a barrier layer
• CPC Class Codes: B29C 66/729 Textile or other fibrous material made from plastics
• CPC Class Codes: B29C 66/8322 Joining or pressing tools reciprocating along one axis
• CPC Class Codes: B29K 2027/06 PVC, i.e. polyvinylchloride
• CPC Class Codes: B29K 2067/00 Use of polyesters or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2075/00 Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2313/00 Use of textile products or fabrics as reinforcement B29K2105/06 takes precedence
• CPC Class Codes: B29L 2031/3023 Head-rests
• CPC Class Codes: B60N 2/80 Head-rests
• CPC Class Codes: Y10T 156/103 Encasing or enveloping the configured lamina
• CPC Class Codes: Y10T 156/108 Flash, trim or excess removal

Abstract

An improved vehicle headrest includes a bead between a plastic sleeve and a cloth facing. The cloth is bonded to the plastic sleeve such that an exposed face of the cloth is quickly and reliably connected to the plastic sleeve. The plastic sleeve is then filled with a foam and a positioning post. The inventive headrest is formed by initially placing the cloth material on positioning structure in an anvil. The plastic sleeve has been previously rotationally molded, and is slid onto the anvil and over the cloth material. A dielectric bar is then brought into contact with the plastic sleeve, and a bead is formed. As the bead is formed, a cutting blade cuts the plastic material inwardly of the bead. The cut portion of the sleeve is removed exposing the cloth material. A "RF" compatible barrier layer is formed on a rear face of the cloth material and prevents foam from reaching the exposed forward face.

Claims

1. A method of forming a component comprising the steps of:

(i) forming a plastic shell having a hollow interior space between forward and rear faces;

(ii) placing a cloth laminate in the interior space between said forward and rear faces of said shell such that at least a portion of a forward face of said cloth contacts said forward face of said shell;

(iii) while maintaining said contact, bonding a portion of said forward face of said shell to said cloth laminate along a bead thereby outlining a shell portion, and removing said shell portion within said bead to expose said cloth face; and

(iv) filling said shell with foam.

2. A method as recited in claim 1, wherein a positioning post is placed within said shell prior to step (iv), said positioning post being secured within said shell by said foam, and said component being utilized as a vehicle head rest.

3. A method as recited in claim 2, wherein said cloth material being provided with a barrier on a rear face to prevent foam from bleeding through to said forward face of said cloth.

4. A method as recited in claim 1, wherein said bonding of step (iii) includes the sub-steps of placing said cloth material on a positioning structure on an anvil, then placing said shell on said anvil, then bringing a dielectric bonding bar into contact with said shell to form said bead.

5. A method as recited in claim 4, wherein said shell being provided with an opening at one end between said forward and rear faces, and said opening being used for placing said shell on said anvil and over said cloth material.

6. A method as recited in claim 1, wherein said plastic shell forward face being generally planar prior to step (iii).

7. A method as recited in claim 6, wherein said forward face of said cloth laminate has a generally central portion in contact with said forward face of said shell, said bead being formed at a recessed portion of said cloth laminate spaced away from said forward face of said shell prior to step (iii), and such that said formation of said bead includes forcing a portion of said generally planar forward face of said shell beyond said cloth central portion to contact said recessed portion of said cloth material and such that the final configuration of said forward face of said shell is non-planar.

8. A method for forming a component comprising the steps of:

(i) forming a plastic laminate having a generally planar face;

(ii) providing a layer of cloth, placing said plastic laminate so as to overly said cloth such that a portion of said laminate is in contact with a generally central portion of said cloth;

(iii) while maintaining said contact, bonding a portion of said plastic laminate to said cloth laminate to form a bead surrounding said generally central portion, and cutting and removing said plastic laminate inwardly of said bead to reveal said central portion of said cloth.

9. A method as recited in claim 8, wherein the formation of said bead in step (iii) includes the step of forcing said plastic laminate around said central portion of said cloth beyond said central portion to contact a recessed portion of said cloth, said bead being formed at said removed portion, said recessed portion being spaced further from said plastic laminate planar face relative to said central portion of said cloth prior to step (iii).