Method for attaching a fastening tape to a molded article

• US 4,802,939 A
• Filed: 09/04/1987
• Issued: 02/07/1989
• Est. Priority Date: 12/13/1983
• Status: Expired due to Term

• Current Assignee: Aplix SA (Aplix)
• Original Assignee: Aplix SA (Aplix)
• Inventors: Billarant, Patrick J., Queval, Bruno
• Primary Examiner(s): Ball, Michael W.
• Assistant Examiner(s): Aftergut, Jeff H.
• Application Number:
  US07/093,801
• Time in Patent Office: 522 Days
• Field of Search: 428/43, 428/57, 428/120, 428/910, 428/100, 428/900, 24/306, 24/444, 297/DIG. 6, 264/46.7, 264/46.4, 264/313, 264/257, 264/509, 156/155, 156/245, 156/247, 156/289
• US Class Current: 156/155
• CPC Class Codes: A44B 18/0076 Adaptations for being fixed to a moulded article during moulding
• CPC Class Codes: B29C 33/0044 for sealing off parts of inserts projecting into the mould cavity
• CPC Class Codes: B29C 33/14 against the mould wall
• CPC Class Codes: B29C 37/0082 Mechanical anchoring B29C66/303 takes precedence
• CPC Class Codes: B29C 70/68 by incorporating or moulding on preformed parts, e.g. inserts or layers , e.g. foam blocks mould constructions therefor B29C33/12; joining preformed parts by moulding B29C65/70
• CPC Class Codes: B29K 2105/04 cellular or porous
• CPC Class Codes: B60N 2/5825 by hooks, staples, clips, snap fasteners or the like
• CPC Class Codes: Y10T 24/2708 Combined with diverse fastener
• CPC Class Codes: Y10T 24/2725 with feature facilitating, enhancing, or causing attachment of filament mounting surface to support therefor
• CPC Class Codes: Y10T 428/24017 Hook or barb

Abstract

A fastening tape (4) is attached to a molded item (2) such as a seat cushion with a face of gripping hooks (5) turned outwardly to hold a seat cover (3) having complementary fastening member thereon. The tape (4) is molded into the seat cushion (2) during the molding process. Since a liquid molding substance is used, the hooks (5) on the tape (4) are covered with a thin plastic film (17) which prevents the molding liquid from contaminating and clogging the hooks (5). In one embodiment, the film (17) has a relatively low disintegration temperature whereby the heat applied to the mold to cure the cushion (2) disintegrates the film (17) after the cushion has cured, leaving the exposed hooks (5) unclogged and ready for use. In another embodiment, film (17) has a relatively high disintegration temperature and is removed in a separate step subsequent to the molding procoess by additional heat, such as an open flame.

Claims

1. A method for securing a fastening member to an article to be molded, said fastening member being of the type characterized by having a base carrying numerous rows of hook-like projections for mating, releasable engagement with a loose, fibrous patch to form a fastener assembly, said method comprising the steps of:

(a) applying a thin, protective film to the fastening member to protect and sealingly enclose the hook-like projections around the entire periphery of the fastening member against leakage of molding liquid past the film onto the hook-like projections;

(b) placing the fastening member in a mold in a position wherein the hook-like projections will be exposed on the surface of the completed molded article and introducing molding liquid to the mold;

(c) curing the molding liquid to form a solid; and

(d) removing the protective film from the fastening member after the molding liquid is cured to expose said hook-like projections for mating, releasable engagement with said patch.

2. A method according to claim 1 and including the additional step of continuously affixing peripheral edges of said protective film to peripheral edges of the base carrying the hook-like projections.

3. A method according to claim 1, wherein the step of removing the protective film comprises applying heat to the mold to cure the molding liquid into a solid and to disintegrate the protective film covering the hook-like projections after the molding liquid has solidified sufficiently to prevent leakage of the molding liquid into the area occupied by the hook-like projections.

6. A method according to claim 1 or 4, wherein the step of curing the molding liquid to form a solid comprises the step of cold setting the molded article.

7. A method according to claim 1 or 4, wherein said protective film is removed from said fastening member after the fastening member has been removed from the mold.

8. A method according to claim 7, wherein the protective film is detached by unsticking the fastening member from the mold.

9. A method according to claim 1, wherein the film is detached by cutting or tearing the film away from the fastening member.

4. A method for securing a fastening member to an article to be molded, said fastening member being of the type characterized by having a base carrying numerous rows of hook-like projections for mating, releasable engagement with a loose, fibrous patch to form a fastener assembly, said method comprising the steps of:

(a) applying a thin, protective film to the fastening member to protect and enclose the hook-like projections;

(b) placing the fastening member in a mold in a position wherein the hook-like projections will be exposed on the surface of the completed molded article and introducing molding liquid to the mold;

(c) curing the molding liquid to form a solid at a temperature below which the protective film disintegrates;

(d) applying heat to the protective film subsequent to the molding process causing said film to disintegrate and exposing said hook-like projections for mating, releasable engagement with said patch.

5. A method according to claim 4, wherein the step of applying heat to the protective film comprises exposing the film to an open flame for a sufficient period of time to disintegrate said film without damaging said base or said hook-like projections.