Method for producing a composite component
AssigneeBASF SE
InventorsJürgen Lambert, Christian Obermann, Jürgen Bartl, Andreas Medert
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for the production of a composite component (33) which comprises a molding (1) made of a thermoplastic polymer foam and which comprises a functional layer (37) made of an unfoamed thermoplastic, comprising the following steps: (e) insertion of the molding (1) made of thermoplastic polymer foam into a mold (3), (f) application of a thermoplastic polymer by an injection process, where the pressure during the application of the thermoplastic polymer is smaller than 100 bar.
Claims13
A process for the production of a composite component, said composite component comprising (a) a molding consisting of a thermoplastic polymer foam and (b) a functional layer made of an unfoamed thermoplastic, the process comprising:
- (a) inserting the molding consisting of thermoplastic polymer foam into a mold,
- (b) subsequently applying a thermoplastic polymer by an injection process to form the functional layer, where a melt of the thermoplastic polymer is injected and the pressure during the application of the thermoplastic polymer is less than 60 bar;
- wherein the thermoplastic polymer foam is a particle foam;
- wherein the injection process is an injection-molding process, a transfer-molding process, or an injection-compression-molding process;
- wherein the injection-molding process is carried out with a pressure of less than 60 bar, with a holding pressure of less than 50 bar, and with an injection speed of less than 100 mm/s.
A process for the production of a composite component, said composite component comprising (a) a molding consisting of a thermoplastic polymer foam and (b) a functional layer made of an unfoamed thermoplastic, the process comprising:
- (a) inserting the molding consisting of thermoplastic polymer foam into a mold, wherein the thermoplastic polymer foam is composed of expanded thermoplastic polyurethane or biodegradable, aliphatic-aromatic copolyester,
- (b) subsequently applying a thermoplastic polymer by an injection process to form the functional layer, where a melt of the thermoplastic polymer is injected and the pressure during the application of the thermoplastic polymer is less than 60 bar;
- wherein the thermoplastic polymer foam is a particle foam,
- wherein the inserting is carried out by inserting the molding made of thermoplastic polymer foam into a first half of the mold;
- wherein a second half of the mold is subsequently used to seal the first half of the mold;
- and
- wherein the applying is carried out by injection molding with a sprue cross-section in the range from 0.5 to 10 mm.
Dependencies are inferred from the claim text.