公开(公告)号：US20220105679A1

公开(公告)日：2022-04-07

申请号：US17294445

申请日：2019-06-10

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Jesiska Tandy ,  Stanley j. Kozmiski ,  Alay Yemane

IPC: B29C64/165 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

Abstract: A materials kit for 3D printing can include a powder bed material including from about 60 wt % to 100 wt % composite fibers having an average aspect ratio from about 3:1 to about 30:1 and a fusing agent including an energy absorber to absorb electromagnetic radiation to produce heat. The composite fibers can include glass fibers coated with an encapsulating polymer, wherein the glass fibers can be included at from about 5 wt % to about 40 wt % based on the total weight of the powder bed material.

公开(公告)号：US20210402697A1

公开(公告)日：2021-12-30

申请号：US16605224

申请日：2018-04-30

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Erica Fung ,  Jesiska Tandy ,  Yi Feng ,  Alay Yemane ,  Allen Jin

IPC: B29C64/357 ,  B29C64/153 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02

Abstract: In some examples, a method measures values of a property of a build material aged in a heated environment, and computes, using a predictive model for each of a plurality of recyclability ratios, output values of the property over a plurality of generations of the build material, each recyclability ratio of the plurality of recyclability ratios representing relative amounts of fresh build material and used build material. The method further includes presenting the output values of the property over the plurality of generations to enable selection of a recyclability ratio to use in building a part using the build material.