US 12,257,823 B2
Method for producing a component
Martin Hahn, Herrieden (DE)
Assigned to LEONHARD KURZ Stiftung & Co. KG, Fürth (DE)
Appl. No. 17/292,948
Filed by LEONHARD KURZ Stiftung & Co. KG, Fürth (DE)
PCT Filed Nov. 5, 2019, PCT No. PCT/EP2019/080257
§ 371(c)(1), (2) Date May 11, 2021,
PCT Pub. No. WO2020/099191, PCT Pub. Date May 22, 2020.
Claims priority of application No. 102018128194.3 (DE), filed on Nov. 12, 2018; and application No. 102019120711.8 (DE), filed on Jul. 31, 2019.
Prior Publication US 2022/0001662 A1, Jan. 6, 2022
Int. Cl. B29C 45/14 (2006.01); B29C 45/00 (2006.01); B29C 45/16 (2006.01); B29C 45/64 (2006.01); B41F 16/00 (2006.01); B29K 75/00 (2006.01)
CPC B41F 16/0053 (2013.01) [B29C 45/0053 (2013.01); B29C 45/14336 (2013.01); B29C 45/14688 (2013.01); B29C 45/14827 (2013.01); B29C 45/1635 (2013.01); B29C 45/1671 (2013.01); B29C 45/64 (2013.01); B41F 16/008 (2013.01); B29C 2045/1637 (2013.01); B29C 2045/1673 (2013.01); B29C 2945/76464 (2013.01); B29K 2075/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for producing a component, the method comprising:
a) closing an injection mold comprising a first mold half with a first mold cavity and at least one second mold half, wherein a first injection-molding cavity defined by the first mold half and the at least one second mold half is formed;
b) injection molding a base body by introducing a first plastic material into the first injection-molding cavity;
c) opening the injection mold, wherein the base body remains following the contours in the first mold cavity of the first mold half and only a first partial area of the surface of the base body is exposed, but a second partial area of the surface of the base body still remains in the first mold half;
d) stamping one or more first film elements onto at least one partial area of the exposed first partial area of the surface of the base body, wherein the base body remains following the contours in the first mold cavity of the first mold half and the first mold half acts as stamping receiver for the stamping of the one or more first film elements;
e) removing the component, comprising the base body and the one or more first film elements, from the first mold half,
wherein the chronological sequence of steps b) and d) is controlled such that the base body is only partially cooled when step d) is carried out and still has an average surface temperature in the first partial area of the surface of between 20° C. and 120° C., and
wherein a hot-stamping film comprising a carrier ply and a transfer ply detachable therefrom is used as the film in step d), and during the stamping, at least one section of the transfer ply defined by the shape of the stamping tool is applied as the first film element by activating an adhesive layer of the transfer ply or an adhesive layer provided between the base body and the transfer ply, and
wherein, during the stamping, a section of the transfer ply of the hot-stamping film defined by the shape of the stamping tool is pressed against a section of the exposed surface of the base body whereby the average surface temperature in the first partial area of the exposed surface of the base body contributes to the activation of the adhesive layer of the transfer ply or the adhesive layer provided between the base body and the transfer ply, and
wherein, after activation of the adhesive layer, the hot-stamping film is peeled off again, and, in the process, the carrier ply and the areas of the transfer ply in which the adhesive layer has not been activated are peeled off again, wherein the areas of the transfer ply of the hot-stamping film thus remain as the first film element on the base body, in which the adhesive layer has been activated by the stamping tool.