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US 2008/0163977 A1Published application
Process For the Production of Film Laminates For Composite Glazing of Partial Films of Different Compositions
OwnerUwe Kellerinventor
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Abstract
The invention relates to the production of intermediate layer films for composite glazings by the combination of partial films containing softener to form an intermediate layer film, softener parts migrating between the partial films. The invention also relates to the production of composite glazings using said intermediate layer films.
Claims10
A process for producing film laminates comprising:
- laminating at least two partial films, at least one of said partial films containing at least one plasticizer with a first plasticiser content,
- wherein migration of said at least one plasticiser occurs between said at least two partial films resulting in adjustment of the plasticizer content of said at least one partial film to a second plasticiser content,
- wherein said first and second plasticiser contents of said at least one of said partial films differ by at least 0.5% by weight and said partial films are based on different polymers.
A process for producing composite systems from at least two rigid bodies and at least one film laminate, said process comprising:
- laminating at least two partial films, at least one of said partial films containing at least one plasticiser with a first plasticiser content, wherein migration of said at least one plasticiser occurs between at least two partial films resulting in adjustment of the plasticizer content of said at least one partial film to a second plasticiser content, wherein said first and second plasticiser contents of said at least one of said partial films differ by at least 0.5% by weight and said partial films are based on different polymers,
- arranging said partial films between said rigid bodies and applying an elevated temperature and an increased or reduced pressure.
Dependencies are inferred from the claim text.