US 12,221,376 B2
Method for producing a glass-plastic connection
Robin Krüger, Hannover (DE); Oktavia Ostermann, Hannover (DE); Bernd Rösener, Porta Westfalica (DE); Malte Schulz-Ruhtenberg, Wunstorf (DE); Roman Ostholt, Langenhagen (DE); Tobias Jaus, Nuremberg (DE); and Anna Kolossowski, Fürth (DE)
Assigned to LPKF LASER & ELECTRONICS AG, Garbsen (DE)
Appl. No. 17/426,243
Filed by LPKF LASER & ELECTRONICS AG, Garbsen (DE)
PCT Filed Jan. 29, 2020, PCT No. PCT/EP2020/052198
§ 371(c)(1), (2) Date Jul. 28, 2021,
PCT Pub. No. WO2020/157155, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 102019201350.3 (DE), filed on Feb. 1, 2019.
Prior Publication US 2022/0089478 A1, Mar. 24, 2022
Int. Cl. C03C 17/32 (2006.01); C03C 15/00 (2006.01); C03C 23/00 (2006.01); C03C 27/06 (2006.01)
CPC C03C 17/32 (2013.01) [C03C 15/00 (2013.01); C03C 23/0025 (2013.01); C03C 27/06 (2013.01); C03C 2218/31 (2013.01); C03C 2218/365 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A process for the production of a glass-plastic composite comprising or consisting of the steps of
providing a glass substrate having spaced-apart recesses traversing through the glass substrate and having at least one undercut which is formed by the recesses widening within the glass substrate,
applying a plastic onto the glass substrate into a plurality of the recesses and introducing the plastic into the plurality of the recesses, wherein the plastic comprises a thermoplastic,
pressing the plastic against the glass substrate, applying negative pressure to a surface of the glass substrate which lies opposite to the one to which the plastic is applied, and/or applying ultrasound to the plastic,
heating the thermoplastic to a temperature above its glass transition temperature or above its melting temperature simultaneously with or prior to the pressing, applying negative pressure and/or applying ultrasound,
wherein no additional material is introduced into the composite and wherein the applying, pressing and heating further comprises applying the plastic on the surface of the glass substrate to create a form-fitting glass-plastic connection, and
solidifying the plastic.