Kuraray Europe Gmbh

Bernhard Koll

Holger Stenzel

Andreas Karpinski

Manfred Hoss

The invention relates to a method of producing a solar module by laminating a layer body consisting of a first carrier, to which at least one solar cell unit is applied, and a second carrier by at least one intermediate film based on a plasticizer-containing polyvinyl acetal by guiding the layer body between at least one pair of rollers at a temperature of 50 to 150&#xb0; C.

Method of producing solar modules by the roller laminate process

Plasticized films suitable as an intermediate layer in laminated safety glass and based on partially acetalized polyvinyl alcohols, in particular PVB, have not only the required excellent adhesion to glass but also undesired self-adhesion (susceptibility to blocking). Amounts of from 0.001 to 0.1% by weight of a pentaerythritol ester are proposed for use as an additive which reduces self-adhesion. This additive does not alter the adhesion of the film to glass. The invention is used for producing films for the production of laminated safety glass. The need to cool the films for stacking or wind-up is substantially eliminated.

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St. Augustin, Germany

Bernhard Koll