公开(公告)号：US20220306890A1

公开(公告)日：2022-09-29

申请号：US17635446

申请日：2020-10-07

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Craig F. GORIN ,  Jun LI ,  Piyush THAKRE ,  Yongchao ZENG

IPC: C09D123/06 ,  B33Y70/00

Abstract: A method comprising, (i) providing a thermoplastic material comprising 5-75 wt % of a post-consumer recycled polyolefin composition and 25-95 wt % of an olefin block copolymer composition based on total weight of the thermoplastic material, wherein the post-consumer recycled polyolefin composition comprises at least 50 wt %, of a polyolefin and at least 0.1 wt % of a contaminant; (ii) heating and dispensing said thermoplastic material through a nozzle to form an extrudate deposited on a base, (iii) moving the base, nozzle or combination thereof while dispensing the thermoplastic material so that there is horizontal displacement between the base and nozzle in a predetermined pattern to form an initial layer of the material on the base, and (iv) repeating steps (ii) and (iii) to form a subsequent layer of the material adhered on the initial layer, and (v) optionally repeating step steps (ii) and (iii) to form additional subsequent layers.