METHOD FOR LAMINATING ESSENTIALLY PLATE-SHAPED WORK PIECES
First Claim
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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Accused Products
Abstract
A method for laminating essentially plate-shaped work pieces with a thermally activated adhesive layer, particularly photovoltaic modules. Work pieces are inserted into a vacuum chamber having a compression element dividing the vacuum chamber in a gas tight fashion that can be raised and lowered by pressure differences. The compression element presses against the work piece which in turn presses against a heating plate which forms a lower side of the vacuum chamber, with processing heat being transferred into the work piece to soften the adhesive. The work piece is first impinged by the compression element with a slight load from approx. 2% to 10% of the defined processing load, and is simultaneously kept below the adhesive activation temperature. Thereafter, the slight load is lifted off the work piece and the work piece is heated to the activation temperature and impinged via the compression element with the processing load.
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Citations
10 Claims
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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:
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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, and transferring 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, wherein the 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification