Adhesive attachment system for decorative trim strips

• US 3,916,055 A
• Filed: 05/29/1973
• Issued: 10/28/1975
• Est. Priority Date: 05/20/1971
• Status: Expired due to Term

• Current Assignee: David P. Wagner
• Original Assignee: David P. Wagner
• Inventors: Wagner, David P.
• Primary Examiner(s): Drummond, Douglas J.
• Assistant Examiner(s): Dawson, Robert A.
• Application Number:
  US05/364,769
• Time in Patent Office: 882 Days
• Field of Search: 29/475 52/312,716,717,718 156/199,216,221,272,306,310,330,313 161/41,43,44,119,167 293/1,62 428/161,313,346 24/73HS,73FT
• US Class Current: 428/161
• CPC Class Codes: B29C 65/3656 being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
• CPC Class Codes: B29C 65/366 being a coating or being printed, e.g. being applied as a paint or forming a printed circuit
• CPC Class Codes: B29C 65/368 with a polymer coating
• CPC Class Codes: B29C 65/4815 Hot melt adhesives, e.g. thermoplastic adhesives
• CPC Class Codes: B29C 65/4825 Pressure sensitive adhesives
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/47 Joining single elements to sheets, plates or other substantially flat surfaces B29C66/5326 takes precedence
• CPC Class Codes: B29C 66/4724 said single elements being appliques, e.g. in the form of a text or drawing
• CPC Class Codes: B29C 66/474 said single elements being substantially non-flat
• CPC Class Codes: B29C 66/532 Joining single elements to the wall of tubular articles, hollow articles or bars
• 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 66/72321 consisting of metals or their alloys
• CPC Class Codes: B29C 66/727 being porous, e.g. foam
• CPC Class Codes: B29C 66/8322 Joining or pressing tools reciprocating along one axis
• CPC Class Codes: B29K 2075/00 Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
• CPC Class Codes: B29L 2031/7282 Snap fasteners, clips, press-buttons
• CPC Class Codes: B32B 2266/0278 Polyurethane
• CPC Class Codes: B32B 2307/56 Damping, energy absorption
• CPC Class Codes: B32B 5/22 characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed layer formed of natural mineral fibres or particles next to a foam layer B32B19/047, next to a layer made of particles B32B19/048, or next to a fibrous or filamentary layer B32B19/06; paper layer or cardboard layer next to a paper layer or cardboard layer B32B29/005, next to a foam layer B32B29/007, next to a fibrous or filamentary layer B32B29/02, or next to a particulate layer B32B29/04
• CPC Class Codes: F16B 11/006 by gluing gluing of plastics material B29C65/48
• CPC Class Codes: F16B 5/126 : at least one of the sheets, plates, bars or strips having integrally formed or integrally connected snap-in-features
• CPC Class Codes: F16B 5/128 : a strip with a C-or U-shaped cross section being fastened to a plate such that the fastening means remain invisible, e.g. the fastening being completely enclosed by the strip
• CPC Class Codes: Y10T 24/304 : Resilient metal type
• CPC Class Codes: Y10T 428/24521 : with component conforming to contour of nonplanar surface
• CPC Class Codes: Y10T 428/249985 : Composition of adhesive or bonding component specified
• CPC Class Codes: Y10T 428/24999 : Inorganic
• CPC Class Codes: Y10T 428/2813 : Heat or solvent activated or sealable

Abstract

A trim attachment system utilizing thermoplastic adhesive to bond trim, clips, emblems, or the like, to a finished workpiece without utilizing apertures in the workpiece. The trim attachment may carry a layer of hot melt adhesive or the adhesive material may be produced solely by the isolated heating and reflowing of a thermoplastic paint on the workpiece.

Claims

1. AN ADHESIVE ATTACHMENT SYSTEM COMPRISING THREE ELEMENTS, A CARRIER DEVICE, PRIMARY WORKPIECE AND SECONDARY WORKPIECE, THE CARRIER DEVICE INCLUDING FASTENER SEEMS TO ATTACH THE SECONDARY WORKPIECE TO THE PRIMARY WORKPIECE, SAID CARRIER DEVICE HAVING A SUBSTANTIALLY PLANAR FAYING SURFACE PROVIDED WITH AT LEAST A PARTIAL COATING OF PREAPPLIED, DRY NONTACKY, THERMOPLASTIC ADHESIVE MATERIAL INCLUDING SCREENLIKE REINFORCEMENT MEANS EMBEDDED THEREIN AND PROVIDING AREAS OF INTERLOCK WITHIN THE ADHESIVE COATING AND INSURING A CONTROLLED BOND LINE BETWEEN THE FAYING SURFACE ON THE CARRIER DEVICE AND A CORRESPONDING FAYING SURFACE ON THE PRIMARY WORKPIECE, AT LEAST ONE OF THE FAYING SURFACE BEING A HAT CONDUCTING MATERIAL PROVIDING MEANS FOR CONDUCTING AND DIRECTING HEAT FROM AN OUTSIDE INDUCTION HEATING SOURCE TO ACTIVATE THE ADHESIVE MATERIAL, THEREBY BONDING THE CARRIER DEVICE TO THE PRIMARY WORKPIECE.

2. A fastening system for bonding trim to a workpiece including a carrier device, foam shock absorbing means attached to a surface of the carrier device, and a workpiece of heat conducting material, a thermoplastic finish paint layer on the workpiece, the foam shock absorbing means being adhered to the workpiece solely through the use of the thermoplastic finish layer as the heat activable adhesive bond line between the foam means and the workpiece, a predetermined area of the paint layer thus being softened by the induction of heat in the heat conducting workpiece to reflow and subsequently cool and set the predetermined area of the finish layer.

3. An adhesive attachment system in accordance with claim 1, wherein both the carrier device and primary workpiece are formed of heat conducting material to allow the use of induction heating to activate the adhesive through both the carrier device and primary workpiece.

4. A fastening system in accordance with claim 2, wherein an adhesive layer is provided between the shock absorbing means and the carrier device.