B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1120
B29C 43/46 (2006.01) B29C 43/22 (2006.01) B29C 43/24 (2006.01) B29C 55/18 (2006.01)
Patent
CA 2021906
A process is provided for the continuous produc- tion of a high-strength and high-modulus polyethylene material having excellent properties. According to the process, powder composed of ultra-high-molecular-weight polyethylene powder as a principal component is sub- jected to compression molding, rolling and stretching. The polyethylene powder has an intrinsic viscosity of 5-50 d?/g as measured at 135°C in decalin. The com- pression molding is carried out by feeding the polyethylene powder between endless belts arranged in an opposing up-and-down relation, and conveying the polyethylene powder while holding the same between the endless belts and at the same time, continuously com- pression molding the polyethylene powder at a tempera- ture lower than its melting point by a compressing means provided inside of the endless belts, In at least one of the compression molding step and rolling step, an olefin polymer having a molecular weight lower than the polyolefin polymer is concurrently processed.
Iwanami Yoshimu
Kobayashi Seizo
Kurihara Kazuhiko
Mizoe Takashi
Okada Mihoko
Nippon Mitsubishi Oil Corporation
Nippon Oil Corporation
Polymer Processing Research Institute Ltd.
Sim & Mcburney
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