Method for producing a moulded body
A molded body and molding tool technology, applied in the field of microstructure manufacturing, molded body, and molded body manufacturing, can solve problems such as no description of manufacturing
Active Publication Date: 2021-01-01
KARLSRUHER INST FUR TECH
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However, it does not describe the fabrication of structures with undercuts
Method used
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[0062] FIG. 1 shows a schematic illustration of a proposed method 100 for producing a molded body 10 .
[0063] Such as Figure 1a As shown schematically in , according to step a) 101 a molding tool 40 is provided having at least one container 12, which can also be referred to as a "cavity", into which at least one material 30 is introduced. In this respect, the material 30 comprises at least one shape memory material 31 or a mixture 32 of various materials, at least one of which is a shape memory material 31 , which can be introduced directly into the container 12 of the molding tool 40 . Alternatively or additionally, at least one starting material 33, in particular a precursor (Precursor), can be introduced into the container 12 of the molding tool 40, wherein, in a further method step, before or during step b) 102 , the at least one starting material 33 can be completely or at least partially converted into the at least one shape memory material 31 . In the test, the tes...
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Abstract
The present invention relates to a method for producing a moulded body (10), comprising the following steps: a) providing a moulding tool (40), which has at least one receptacle (12) into which at least one material (30) is introduced which comprises at least one shape memory material (31), the shape memory material (31) being present in a first state (111), and the material (30) at least partially filling the receptacle (12) of the moulding tool (40) in such a way that it borders at least one surface of the receptacle (12); b) producing a moulded body (10) from the material (30) in the receptacle (12) of the moulding tool (40), the shape memory material (31) being present in a second state (112), and a shape (11) being imparted to the moulded body (10) during the second state (112); c) transferring the shape memory material (31) into a third state (113), the moulded body (10) being deformable during the third state (113) in such a way that demoulding of the moulded body (10) from thereceptacle (12) of the moulding tool (40) takes place; and d) at least partially reproducing the shape (11) of the moulded body (10) by transferring the shape memory material (31) into a fourth state(114), the moulded body (10) at least partially assuming the shape (11) according to step b) again during the fourth state (114).
Description
technical field [0001] The invention belongs to the field of the production of structures, in particular microstructures, and relates to a method for producing molded bodies and to molded bodies which can be produced by this method. Methods of this type are preferably suitable for the production of optical or micro-optical components, but can also be used in other fields of application. Background technique [0002] The manufacturing methods known in the prior art for structures, in particular for microstructures, can be subdivided on the one hand into additive manufacturing methods which are configured to build up layered structures and which include in particular 3D printing or Two-photon lithography; on the other hand is subdivided into basic shaping or shaping methods, which provide basic shaping or shaping of a given material, and include in particular thermo-embossing, nanoimprinting and injection moulding. Significant differences between these two types of manufactur...
Claims
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IPC IPC(8): B29C61/06B29C31/00B29C35/00B29C59/00B29C71/00
CPCB29C61/0608B29C71/00B29C2059/023B29C59/022B29C37/0053B29C71/0009B29C71/02B29C2071/022B29C71/04B29L2011/0016B29C59/005B29K2505/00B29K2509/00B29K2995/0012B29K2995/0018B81C99/0095B81C2201/034
Inventor N·施耐德C·库斯M·沃尔格P-I·迪特里希
Owner KARLSRUHER INST FUR TECH