Method and device for producing a profiled trim section for a glass pane

• US 6,926,335 B2
• Filed: 01/23/2002
• Issued: 08/09/2005
• Est. Priority Date: 01/30/2001
• Status: Expired due to Term

• Current Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Inventors: Behrend, Ulrich, Orten, Thomas, Bischof, Thomas
• Primary Examiner(s): SLACK, NAOKO N
• Application Number:
  US10/466,631
• Publication Number:
  US 20040118079A1
• Time in Patent Office: 1,294 Days
• Field of Search: 522/08, 522/045.3, 522/045.91, 527/861.2, 522/045.93, 264/134, 264/264, 264/265, 428/34, 428/35.7, 428/412, 296/93
• US Class Current: 296/93
• CPC Class Codes: B29C 48/08 flexible, e.g. films
• CPC Class Codes: B29C 48/155 Partial coating thereof
• CPC Class Codes: B60J 10/70 specially adapted for windows or windscreens
• CPC Class Codes: Y10T 428/31507 Of polycarbonate

Abstract

A window having with a first surface, a second surface and an edge face is provided. A mould having an upper section and a moulding bed with a mould surface, which together form a mould channel into which a polymeric material can be introduced to form the trim, is also provided. At least a part of the window is inserted into the mould channel so that the perimeter of first window surface contacts the moulding bed and the window surface extends parallel to the mould surface. The polymeric material is introduced into the mould channel and the polymeric material adheres to the perimeter of the second surface of the window to provide a trim section which projects beyond the second surface and covers the edge face of the window, while preventing the adhesion of the trim section to the edge face of the window.

Claims

1. A process for manufacturing a polymeric trim section on a window, comprising:

i) providing a window having a first surface with a first perimeter, a second surface with a second perimeter, and an edge face;

ii) providing a mould comprising (a) an upper section and (b) a moulding bed with a mould surface which together form a mould channel into which a polymeric material can be introduced to form the trim;

iii) inserting at least part of the window into the mould channel such that the first perimeter of the window contacts the moulding bed and the first surface of the window extends parallel to the mould surface;

iv) introducing the polymeric material into the mould channel and adhering the polymeric material to the second perimeter of the second surface of the window to provide a trim section that projects beyond the second perimeter and covers the edge face of the window; and

v) preventing adhesion of the trim section to the edge face of the window wherein steps i)-v) are carried out prior to subsequent pressing of the polymeric trim section in the mounted state.

2. The process of claim 1, further comprising coating the second perimeter of the second surface of the window with an adhesion promoter.

3. The process of claim 2, further comprising

preventing the edge face of the window from being coated with the adhesion promoter.

4. The process of claim 1, wherein the polymeric material is introduced into the moulding channel with an extrusion nozzle.

5. The process of claim 4, wherein the extrusion nozzle is a gauged extrusion nozzle.

6. process of claim 1, wherein the polymeric material is a thermoplastic polymer.

7. A process for manufacturing a polymeric trim section on a window, comprising:

providing a window having a first surface with a first perimeter, a second surface with a second perimeter, and an edge face;

coating the second perimeter of the second surface of the window with an adhesion promoter;

preventing the edge face of the window from being coated with the adhesion promoter;

providing a mould comprising (a) an upper section and (b) a moulding bed with a mould surface which together form a mould channel into which a polymeric material can be introduced to form the trim;

inserting at least part of the window into the mould channel such that the first perimeter of the window contacts the moulding bed and the first surface of the window extends parallel to the mould surface;

introducing the polymeric material into the mould channel and adhering the polymeric material to the second perimeter of the second surface of the window to provide a trim section that projects beyond the second perimeter and covers the edge face of the window; and

preventing adhesion of the trim section to the edge face of the window;

wherein preventing the edge face of the window from being coated with the adhesion promoter is accomplished by coating the edge face of the window with a release agent.

8. A process for manufacturing a polymeric trim section on a window, comprising:

providing a window having a first surface with a first perimeter, a second surface with a second perimeter, and an edge face;

coating the second perimeter of the second surface of the window with an adhesion promoter;

preventing the edge face of the window from being coated with the adhesion promoter;

providing a mould comprising (a) an upper section and (b) a moulding bed with a mould surface which together form a mould channel into which a polymeric material can be introduced to form the trim;

inserting at least part of the window into the mould channel such that the first perimeter of the window contacts the moulding bed and the first surface of the window extends parallel to the mould surface;

introducing the polymeric material into the mould channel and adhering the polymeric material to the second perimeter of the second surface of the window to provide a trim section that projects beyond the second perimeter and covers the edge face of the window; and

preventing adhesion of the trim section to the edge face of the window;

wherein preventing the edge face of the window from being coated with the adhesion promoter is accomplished by placing a mask on the edge face of the window before the polymeric material is applied to the second surface of the window.

9. The process of claim 8, wherein the mask is fastened to the edge face of the window or to the moulding bed.

10. The process of claim 9, wherein the mask is a thin flexible band.

11. The process of claim 8, wherein the mask is an angled strip having a first side that contacts the edge face and a second side that contacts the moulding bed.

12. The process of claim 11, wherein the second side of the angled strip is part of the moulding surface, projects away from the edge face of the window, and is parallel to the molding bed.

13. The process of claim 11, wherein the second side of the angled strip contacts the first perimeter of the window and supports the first perimeter of the window.

14. An apparatus for providing a trim section on a window, wherein the window comprises a first surface with a first perimeter, a second surface with a second perimeter, and an edge face;

said apparatus comprising;

1) a mould comprising (a) an upper section and (b) a moulding bed with a mould surface which together form a mould channel, and (c) a mask such that when a window is inserted in the mould channel the edge face of the window contacts the mask;

2) an extruding device for introducing a polymeric material into the mould channel such that the polymeric material adheres to the second surface of the window and the mask prevents the polymeric material from adhering to the edge face of the window.

15. The apparatus of claim 14, wherein the mask forms a band around the edge face of the window.

16. The apparatus of claim 14, wherein the mask is an angled strip having a first side that contacts the edge and a second side that is part of the mould surface.

17. The apparatus of claim 16, wherein the mask has a cross section with a cuneiform shape.