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METHOD FOR LAMINATING ESSENTIALLY PLATE-SHAPED WORK PIECES

  • US 20120132360A1
  • Filed: 11/22/2011
  • Published: 05/31/2012
  • Est. Priority Date: 11/30/2010
  • Status: Active Grant
First Claim
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1. A method for laminating essentially plate-shaped work pieces with at least one thermally activated adhesive layer under effects of pressure and heat, comprising:

  • inserting one or more work pieces into a vacuum chamber of a vacuum lamination press having a compression means, which divides the vacuum chamber in a gas-tight fashion and can be raised or lowered via pressure differences,evacuating the vacuum chamber,pressing the compression means, by way of at least one of ventilation or pressure impingement of a part of the vacuum chamber in which no work piece is located, against the work piece and said work piece thereby being pressed directly or indirectly against a plate which forms an upper and a lower side of the vacuum chamber, andtransferring processing heat being into the work piece, by which the adhesive layer is heated and also softened, and upon reaching an activation temperature is activated under the influence of a defined processing load by the compression means, whereinthe work piece, after being inserted into the vacuum chamber, is first impinged by a slight load from approx. 2% to approx. 10% of a defined processing load, with the work piece simultaneously being kept at a temperature below an activation temperature of the adhesive layer, and thereafter the slight load is lifted off the work piece, and then the work piece is heated to the activation temperature of the adhesive layer and impinged via the compression means with the processing load.

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