Method of manufacturing an interlocked, “flush-to-front,” injection molded border and glass sheet

  • US 6,558,601 B1
  • Filed: 11/21/2000
  • Issued: 05/06/2003
  • Est. Priority Date: 10/26/1998
  • Status: Expired due to Term
First Claim
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1. A method of forming a unitized article which includes a border along a periphery of a glass sheet comprising the steps of:

  • (a) providing a glass sheet having first and second opposite surfaces merging with each other along a peripheral surface which includes an angled, flat ;

    uniplanar surface setting-off with the glass sheet first surface an included angle substantially greater than normal;

    (b) placing the glass sheet in a mold having first and second mold bodies defining respective opposing first and second cavity surfaces which collectively define with said angled surface a concave cavity including a peripheral edge cavity portion defined in part by a cavity defining surface of the second cavity surface which lies in the plane of the glass sheet first surface when the mold is closed, (c) closing the mold such that the cavity defining surface and the glass sheet angled surface set-off an angle complementary to said included angle and with the glass sheet first surface abutting the second cavity defining surface inboard of the angled surface, (d) injecting hot synthetic plastic material into the concave cavity including the peripheral cavity portion to completely encapsulate the glass sheet periphery by a synthetic plastic material border having a first exterior surface coplanar with the glass sheet first surface whereby the latter two surfaces are flush and the glass sheet periphery is in undercut interlocked relationship with the border, and (e) opening the mold by relatively moving the first and second mold bodies.

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