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UHMWPE tape manufacturing method, wide slit extrusion die, and UHMWPE tape manufactured therefrom

机译:UHMWPE胶带的制造方法,宽缝挤出模具以及由此制造的UHMWPE胶带

摘要

A process for making a UHMWPE tape comprises providing a fluid composition comprising HMwPE and/or UHMwPE; extruding a fluid tape from the fluid composition from an extrusion die (100); cooling the fluid tape to obtain a solidified tape and drawing the solidified tape in at least one direction in at least one drawing step at a draw ratio of at least (3) in the machine direction. The extrusion die (100) comprises at least two die inlets (21, 22, 23) through which the fluid composition is supplied; an extrusion slit (80) through which the solution tape is extruded and a cavity (40) divided in the width direction of the extrusion slit into a plurality of cavity sections (41, 42, 43), each cavity section (41, 42, 43) connecting its corresponding die inlet (21, 22, 23) and the extrusion slit (80), wherein the plurality of cavity sections (41, 42, 43) are arranged such that the flow speed of the fluid composition in the cavity sections (41, 42, 43) at the extrusion slit is substantially equal between the cavity sections (41, 42, 43).
机译:一种制造UHMWPE带的方法,包括提供包含HMwPE和/或UHMwPE的流体组合物;从来自挤出模头(100)的流体组合物中挤出流体带;冷却流体带以获得固化带,并在至少一个拉伸步骤中在纵向上以至少(3)的拉伸比在至少一个方向上拉伸固化带。挤出模头(100)包括至少两个模头入口(21、22、23),通过所述模头入口(21、22、23)供应流体组合物。挤压狭缝(80),通过该狭缝挤压溶液带;以及空腔(40),在挤压狭缝的宽度方向上划分成多个空腔部分(41、42、43),每个空腔部分(41、42) 43)连接其相应的模具入口(21、22、23)和挤压狭缝(80),其中多个空腔部分(41、42、43)布置成使得在空腔部分中流体组合物的流速在挤压缝处的凹部(41、42、43)在空腔部分(41、42、43)之间基本相等。

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