Method for pre-forming a curved thermoplastic laminate and pre-formed thermoplastic laminate
AssigneeAutoglas D & K B.V.
InventorBartholomeus Leonardus Marinus Borcherd Driehuis
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Abstract
A method for pre-forming a curved thermoplastic laminate to be incorporated in composed automotive windows, the method including the processing steps of; providing a thermoplastic laminate, clamping said thermoplastic laminate from opposite flat sides between a first and a second flexible clamping layer, applying a clamping force to the thermoplastic laminate, heating the clamped thermoplastic laminate, forming the clamped and heated thermoplastic laminate, and cooling the thermoplastic laminate. The invention also relates to a pre-formed thermoplastic laminate that is pre-formed by such method as well a system for pre-forming such a thermoplastic laminate.
Claims17
A method for pre-forming a curved thermoplastic laminate to be incorporated in composed automotive windows, the method comprising the processing steps of;
- a) providing a thermoplastic laminate, said thermoplastic laminate comprising at least one thermoplastic film,
- b) clamping said thermoplastic laminate from opposite flat sides between a first and a second flexible clamping layer,
- c) applying a clamping force to the thermoplastic laminate, said clamping force having at least a component perpendicular to the thermoplastic laminate situated between the first and second clamping layer,
- d) heating the clamped thermoplastic laminate to a predefined temperature,
- e) forming the clamped and heated thermoplastic laminate in contact with at least one mould part, wherein the contact surface of the mould part is a double-curved contact surfaces, and
- f) cooling the thermoplastic laminate,
- wherein the clamping force applied during processing step c) is at least partially maintained during processing step d).
Dependencies are inferred from the claim text.