Invention Grant
- Patent Title: Process for making a multi-component plastic housing
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Application No.: US14755128Application Date: 2015-06-30
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Publication No.: US10059046B2Publication Date: 2018-08-28
- Inventor: Marc Kunz , Werner Huebscher , Kris Lueckel , Sven Schäfer , Stefan Gehard Triebig
- Applicant: Braun GmbH
- Applicant Address: DE Kronberg
- Assignee: BRAUN GMBH
- Current Assignee: BRAUN GMBH
- Current Assignee Address: DE Kronberg
- Agent Vladimir Vitenberg
- Main IPC: B29C45/16
- IPC: B29C45/16 ; B29C45/00 ; B29D22/00 ; B29K23/00 ; B29L31/42 ; B29C33/44 ; B29K21/00 ; B29C45/40

Abstract:
A process for making a multi-component hollow housing comprises injecting a first plastic material into a first mold cavity and causing it to solidify to form a first component, whereby the first plastic material shrinks lengthwise; injecting a second plastic material into a second mold cavity having the first component transferred thereto and causing the second plastic component to solidify to form a second component, the second component comprising a tolerance-elimination element that is longitudinally attached to the first component at one of the ends thereof, wherein a length of the shrunk first component is at least ten times greater than a length of the tolerance-elimination element, and wherein an absolute lengthwise shrinkage of the second plastic material forming the tolerance-elimination element is at least ten times smaller than the lengthwise shrinkage of the first plastic material; at least partially overmolding an intermediate part comprising the first and second component with a third plastic material in a third mold cavity, thereby forming the multi-component housing in which the tolerance-elimination element is at least partially overmolded by the third plastic material, and wherein the third plastic material forms at least a portion of an outer surface of the multi-component housing; and removing the multi-component housing from the core.
Public/Granted literature
- US20170001345A1 PROCESS FOR MAKING A MULTI-COMPONENT PLASTIC HOUSING Public/Granted day:2017-01-05
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