Patent ID: 11958982
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  C | IPC B  C

Claim 4:
5. A powder bed material for 3D printing, consisting of:
electroactive polymer particles present in an amount of from about 90 wt % to about 99.95 wt % based on a total weight of the powder bed material, the electroactive polymer particles including an electroactive polymer selected from the group consisting of polyvinyl fluoride, copolymer of polyvinylidene fluoride and trifluoroethylene, copolymer of polyvinlidene fluoride and 1,1,2,2-chlorotrifluoroethylene, copolymer of polyvinylidene fluoride and hexafluoropropylene, copolymer of polyvinylidene fluoride and tetrafluoropropylene, copolymer of polyvinylidene fluoride and trifluoropropylene, and a combination thereof; and
flow control particles present in an amount of from about 0.05 wt % to about 5 wt % based on the total weight of the powder bed material, wherein the flow control particles are separate from and blended with the electroactive polymer particles.