Vehicular panel assembly and method for making same

• US 5,443,673 A
• Filed: 06/12/1992
• Issued: 08/22/1995
• Est. Priority Date: 06/12/1992
• Status: Expired due to Term

• Current Assignee: Donnelly Corporation (Magna International Incorporated)
• Original Assignee: Donnelly Corporation (Magna International Incorporated)
• Inventors: Fisher, Daniel J., Crank, Douglas, Carter, John W., Agrawal, Raj K.
• Primary Examiner(s): Ball, Michael W.
• Assistant Examiner(s): Stemmer, Daniel J.
• Application Number:
  US07/898,094
• Time in Patent Office: 1,166 Days
• Field of Search: 156/242, 156/245, 156/273.5, 156/233.7, 156/275.3, 156/275.7, 156/320, 156/322, 52/208, 52/746, 296/84.1, 296/93, 296/96.21, 264/259
• US Class Current: 156/245
• CPC Class Codes: B29C 43/18 incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles B29C43/206 takes precedence
• CPC Class Codes: B29C 65/028 making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined
• CPC Class Codes: B29C 65/1412 Infrared [IR] radiation
• CPC Class Codes: B29C 65/1425 Microwave radiation
• CPC Class Codes: B29C 65/1435 at least passing through one of the parts to be joined, i.e. transmission welding
• CPC Class Codes: B29C 65/1441 making use of a reflector on the opposite side, e.g. a polished mandrel or a mirror pressing means reflective to electromagnetic radiation B29C66/81268
• CPC Class Codes: B29C 65/1483 coated on the article
• CPC Class Codes: B29C 65/1496 making use of masks B29C65/1696 takes precedence
• CPC Class Codes: B29C 65/482 Drying adhesives, e.g. solvent based adhesives
• CPC Class Codes: B29C 65/483 Reactive adhesives, e.g. chemically curing adhesives
• CPC Class Codes: B29C 65/4835 Heat curing adhesives
• CPC Class Codes: B29C 65/5057 positioned between the surfaces to be joined B29C65/5035 takes precedence
• CPC Class Codes: B29C 65/7847 using vacuum to hold at least one of the parts to be joined vacuum work holders in general B25B11/005
• CPC Class Codes: B29C 66/0242 Heating, or preheating, e.g. drying B29C66/3464 takes precedence
• 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 66/474 said single elements being substantially non-flat
• 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 66/7465 Glass
• CPC Class Codes: B29C 66/8242 Pneumatic or hydraulic drives using fluid pressure directly acting on the parts to be joined B29C66/8266
• CPC Class Codes: B29C 66/82661 by means of vacuum
• CPC Class Codes: B29C 66/8322 : Joining or pressing tools reciprocating along one axis
• CPC Class Codes: B29C 66/861 : Hand-held tools
• CPC Class Codes: B29C 66/91212 : involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
• CPC Class Codes: B29C 66/91216 : enabling contactless temperature measurements, e.g. using a pyrometer
• CPC Class Codes: B29C 66/91221 : of the parts to be joined
• CPC Class Codes: B29C 66/91231 : of the joining tool
• CPC Class Codes: B29C 66/9131 : by measuring the heat or the thermal flux, i.e. the heat flux
• CPC Class Codes: B29C 66/91411 : of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
• CPC Class Codes: B29C 66/91445 : by steps
• CPC Class Codes: B29C 66/91645 : by steps
• CPC Class Codes: B29C 66/961 : involving a feedback loop mechanism, e.g. comparison with a desired value
• CPC Class Codes: B29K 2021/00 : Use of unspecified rubbers as moulding material
• CPC Class Codes: B29K 2021/003 : Thermoplastic elastomers
• CPC Class Codes: B29K 2023/00 : Use of polyalkenes or derivatives thereof as moulding material
• CPC Class Codes: B29K 2027/06 : PVC, i.e. polyvinylchloride
• CPC Class Codes: B29K 2075/00 : Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2709/08 : Glass
• CPC Class Codes: B60J 10/70 : specially adapted for windows or windscreens
• CPC Class Codes: Y10T 156/10 : Methods of surface bonding and/or assembly therefor
• CPC Class Codes: Y10T 428/13 : Hollow or container type article [e.g., tube, vase, etc.]
• CPC Class Codes: Y10T 428/1334 : Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
• CPC Class Codes: Y10T 428/31504 : Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31525 : Next to glass or quartz
• CPC Class Codes: Y10T 428/31601 : Quartz or glass
• CPC Class Codes: Y10T 428/31641 : Next to natural rubber, gum, oil, rosin, wax, bituminous or tarry residue

Abstract

A panel assembly and method for manufacturing the panel assembly, especially adapted for use in vehicles, includes a panel of predetermined size and geometry wherein a surface of the panel to receive a gasket is primed using a material especially adapted to prepare the panel surface to bond with the gasket. The desired gasket profile is molded separately from the panel from a polymeric material. Following formation of the gasket, the panel is located thereon and pressed into intimate contact with the gasket for a prescribed period of time. The panel and attached panel are removed as an assembly. Additional or optional steps may be followed including preheating the panel and primed surface prior to bonding to shorten the cycle time and improve adhesion. Moreover, heat may be applied to the contact boundary between the panel and gasket substantially simultaneously with the application of pressure. The steps of heating and applying pressure may be repeated to insure proper adhesion. The panel assembly and the method of manufacturing the panel assembly are especially adapted for use in flush mounted panel assemblies wherein the gasket is fixed only to a single surface of the pane and allows for gradationally varying cross-sectional profiles to specifically suit a needed application.

Claims

1. A method for making a vehicle window assembly, comprising:

forming a polymeric gasket by injection molding in a mold, said formed gasket having at least one surface;

providing a panel in the form of a sheet having at least one surface, said panel being separate from said formed gasket;

.

applying a primer coating to at least one of said surfaces of said panel and said formed gasket;

locating said panel on said formed gasket while said formed gasket remains in the mold so that said one surface of said formed gasket and said one surface of said panel form a contact area; and

forcing said formed gasket against said panel to promote adhesion between said panel and said formed gasket.

2. A method as recited in claim 1, further including heating said panel to a desired temperature.

3. A method as recited in claim 2, further including applying pressure to the contact area between said panel and said formed gasket to further improve adhesion.

4. A method as recited in claim 1, wherein forcing said formed gasket into contact with said primer coating on said panel includes pulling said panel against said gasket.

5. A method as recited in claim 1, wherein forcing said formed gasket against said panel includes pressing said panel against said formed gasket.

6. A method as recited in claim 2, wherein the step of heating said panel occurs prior to the step of locating said panel on said formed gasket.

7. A method as recited in claim 2, wherein the step of heating said panel includes heating a portion of said panel forced against said gasket.

8. A method as recited in claim 7, further including providing said panel with a flit coating on said at least one surface.

9. A method as recited in claim 8, wherein the step of heating said portion of said panel includes heating said frit coating to enhance bonding of said formed gasket to said panel.

10. A method as recited in claim 2, wherein the step of heating said panel occurs after the step of locating said panel on said formed gasket.

11. A method as recited in claim 10, wherein the step of heating said panel occurs substantially simultaneously with said forcing of said panel against said formed gasket.

12. A method as recited in claim 10, wherein heating said panel occurs after forcing said panel against said formed gasket.

13. A method as recited in claim 6, further including heating said panel a second time after locating said panel on said formed gasket.

14. A method as recited in claim 13, wherein the step of heating said panel a second time occurs substantially simultaneously with the step of forcing said formed gasket against said panel.

15. A method as recited in claim 13, wherein the step of heating said panel a second time occurs after forcing said formed gasket against said panel.

16. A method as recited in claim 13, further including

applying pressure to the contact area between said panel and said formed gasket substantially contemporaneously with the step of heating after locating said panel on said formed gasket to further improve adhesion.

17. A method as recited in claim 2, wherein the step of heating said panel includes directing an infrared beam into said panel.

18. A method as recited in claim 2, wherein the step of heating said panel includes moving an infrared beam of energy along a side of said panel.

19. A method as recited in claim 2, wherein the step of heating said panel includes applying controlled area infrared radiation through said panel.

20. A method as recited in claim 2, wherein the step of heating said panel includes applying convective heat energy.

21. A method as recited in claim 2, wherein the step of heating said panel includes applying conductive heat energy.

22. A method as recited in claim 2, wherein the step of heating said panel includes directing microwave energy into said panel.

23. A method as recited in claim 1, wherein the step of forming said polymeric gasket includes molding using polyvinylchloride.

24. A method as recited in claim 1, wherein the step of forming said polymeric gasket includes molding using components forming reaction injection molded urethane.

25. A method as recited in claim 1, further comprising the step of providing a polymeric material having a durometer hardness between the range of 55 and 90.

26. A method as recited in claim 1, wherein the step of forming said polymeric gasket includes forming said gasket from a thermoplastic material.

27. A method as recited in claim 26, wherein the step of forming said polymeric gasket includes forming said gasket from one of a thermoplastic vinyl and a thermoplastic elastomer.

28. A method as recited in claim 27, wherein the step of forming said polymeric gasket from said thermoplastic elastomer includes forming said gasket from one of a thermoplastic rubber, thermoplastic urethane, and thermoplastic olefin.

29. A method as recited in claim 1, further including the step of insert molding at least one fastener within said polymeric gasket.

30. A method as recited in claim 1, wherein the step of locating said panel on said formed gasket includes locating only one surface of said panel on said formed gasket.

31. A method as recited in claim 30, wherein the step of locating only one surface of said panel on said formed gasket includes forming a flush-mounted vehicle window assembly.

32. A method as recited in claim 31, wherein the step of providing said flush mounted vehicle window assembly includes providing a fixed window assembly.

33. A method as recited in claim 31, wherein the step of providing said flush mounted vehicle window assembly includes providing a moveable window assembly.

34. A method as recited in claim 1, wherein the step of forming said polymeric gasket includes forming said gasket with a variable cross section.

35. A method as recited in claim 1, wherein the step of forming said polymeric gasket includes forming a lip seal extending from said gasket.

36. A method as recited in claim 1, wherein the step of forming said polymeric gasket includes forming a bulb seal.

37. A method for making a vehicle window assembly by attaching a preformed gasket to a panel comprising:

forming a gasket by injection molding in a mold;

providing a panel separate from said formed gasket in said mold;

pretreating said panel by applying a primer to said panel;

loading the pretreated side of the panel on a surface of said gasket while said gasket is accessible in said mold;

forcing a portion of said panel including said primer against said formed gasket while said formed gasket remains in the mold to bond said gasket to said panel along a contact boundary; and

heating said contact boundary between said formed gasket and said panel to improve adhesion.

38. A method as recited in claim 37, wherein pretreating said panel includes heating said primer and portions of said panel to a predetermined temperature before the step of forcing said panel against said formed gasket.

39. The method as recited in claim 37, wherein the steps of forcing and heating are performed substantially simultaneously.

40. A method as recited in claim 37, wherein the step of heating said contact boundary between said formed gasket and said panel occurs after the step of forcing said panel against said formed gasket.

41. A method as recited in claim 37, further including:

providing said panel with a frit coating prior to said pretreating step;

applying said primer to said frit coating; and

heating said frit coating between said panel and said formed gasket to promote adhesion of said gasket to said panel.

42. A method as recited in claim 37, further comprising the steps of:

moving said panel and adhered, formed gasket as an assembly and inserting said assembly in a fixture having a recess for receiving said formed gasket; and

applying heat and pressure a second time to the contact area between said panel and said formed gasket to further improve adhesion.

43. A method as recited in claim 37, wherein the step of heating said contact boundary between said formed gasket and said panel includes controlling the temperature using a computer and a spectrophotometer.

44. A method as recited in claim 37, wherein the step of heating said contact boundary is restricted to an area defined by said formed gasket.

45. A method as recited in claim 37, wherein the step of heating includes preheating at least portions of said panel in the gasket forming mold or out of the gasket-forming mold or both.

46. A method as recited in claim 37, wherein forcing said panel against said formed gasket includes the step of drawing said panel against said formed gasket.

47. A method for making a vehicle window assembly by attaching a gasket to a panel comprising:

molding at least one polymeric gasket in a mold apparatus using an insert which is removable from the mold;

providing a panel of predetermined size and shape separate from said molded gasket;

priming at least a portion of either said panel adapted to engage said molded gasket or said gasket;

replacing said removable insert with said primed panel while retaining said molded gasket in said mold apparatus; and

pressing said molded gasket into contact with said primed panel to promote adhesion between said panel and said molded gasket.

48. A method as recited in claim 47, further including depositing an opaque frit coating about a perimeter of at least one surface of said panel adapted to receive said molded gasket.

49. A method as recited in claim 48, further including:

heating at least that portion of said panel adapted to receive said molded gasket.

50. A method as recited in claim 49, wherein the step of heating includes:

applying radiant heat energy to the contact area between said at least one molded gasket and said panel to improve adhesion.

51. A method as recited in claim 49, wherein said heating occurs after priming.

52. A method as recited in claim 47, further including:

applying radiant heat energy to the contact area between said at least one molded gasket and said panel to improve adhesion.

53. A method as recited in claim 52, wherein said heating occurs substantially simultaneously with the pressing step.

54. A method as recited in claim 52, wherein said heating occurs after the pressing step.

55. A method as recited in claim 50, wherein said heating the contact area occurs substantially simultaneously with the pressing step.

56. A method as recited in claim 50, wherein said heating the contact area occurs after the pressing step.

57. A method as recited in claim 48, further including:

reapplying a force to said panel and said gasket to force them against each other to maintain the optimum surface area of the contact area.

58. A method as recited in claim 57, further including heating the contact area between said panel and said molded gasket substantially simultaneously with the reapplication of force.

59. A method as recited in claim 57, further including the step of heating the contact area between said panel and said molded gasket following the reapplication of forcing said panel against said molded gasket.