公开(公告)号：US20230405921A1

公开(公告)日：2023-12-21

申请号：US18456640

申请日：2023-08-28

Applicant: STRATASYS INC.

Inventor： Dirk Achten ,  Thomas Busgen ,  Nicolas Degiorgio ,  Levent Akbas ,  Roland Wagner ,  Peter Reichert ,  Jurgen Hattig

IPC: B29C64/141 ,  A47C23/00 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y80/00 ,  C08G18/08

CPC classification number: B29C64/141 ,  A47C23/002 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y80/00 ,  C08G18/14 ,  B29C64/153

Abstract: It is a feature of a use of an elastic polymer for production of a porous body (in an additive manufacturing method that the porous body comprises a three-dimensional network of node points joined to one another by struts, and a void volume present between the struts, where the struts have an average length of ≥200 μm to ≤50 mm and the struts (100) have an average thickness of ≥100 μm to ≤5 mm. The polymer here is an elastomer selected from the following group: thermoset polyurethane elastomers (PUR), thermoplastic copolyamides (TPA), thermoplastic copolyesters (TPC), thermoplastic olefin-based elastomers (TPO), styrene block copolymers (TPS), thermoplastic urethane-based elastomers (TPU), crosslinked thermoplastic olefin-based elastomers (TPV), thermoplastic polyvinyl chloride-based elastomers (PVC), thermoplastic silicone-based elastomers and a combination of at least two of these elastomers.

公开(公告)号：US12195577B2

公开(公告)日：2025-01-14

申请号：US17781113

申请日：2020-12-14

Applicant: Stratasys, Inc.

Inventor： Dirk Achten ,  Thomas Buesgen ,  Mathias Matner ,  Bettina Mettmann ,  Bernd Garska ,  Michael Kessler ,  Peter Reichert ,  Roland Wagner ,  Thomas Prenveille

IPC: B29C64/10 ,  B29C64/112 ,  B29C64/118 ,  B29C64/153 ,  B29C64/165 ,  B29C64/314 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y70/00 ,  C08G18/32 ,  C08G18/42 ,  C08G18/48 ,  C08G18/66 ,  C08G18/73 ,  C08G18/75 ,  C08L75/08 ,  C08L75/14 ,  B29K75/00

Abstract: A method for producing an object comprises the step of producing the object by means of an additive manufacturing process from a construction material. The construction material comprises a first polyurethane polymer which has: a weight percentage ratio of O to N of ≥2 to ≤2.5, determined by elementary analysis; a weight percentage ratio of N to C of ≥0.1 to ≤0.25, determined by elementary analysis; a full-width at half maximum of the melting peak of ≤20 K, determined by dynamic differential scanning calorimetry DSC (2nd heating at heating rate 20 k/min); and a difference between the melting temperature and the recrystallisation temperature of ≥5 K and ≤100 K, determined by dynamic differential scanning calorimetry DSC (2nd heating) at a heating and cooling rate of 20 K/min.