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1.
公开(公告)号:US4844987A
公开(公告)日:1989-07-04
申请号:US924683
申请日:1986-10-28
CPC分类号: C08G69/26 , B32B27/08 , Y10T428/31725 , Y10T428/31736 , Y10T428/31786
摘要: A material for forming a hollow-molded body, which comprises a polyamide comprising hexamethylene isophthalamide units as the main recurring units. A hollow-molded body having an excellent gas barrier property can be obtained by using this polyamide molding material alone or in combination with polyethylene terephthalate.
摘要翻译: 用于形成中空成型体的材料,其包含含有六亚甲基间苯二甲酰胺单元作为主要重复单元的聚酰胺。 通过单独使用该聚酰胺成型材料或与聚对苯二甲酸乙二醇酯组合,可以得到阻气性优异的中空成形体。
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公开(公告)号:US4659534A
公开(公告)日:1987-04-21
申请号:US664071
申请日:1984-10-23
CPC分类号: B29D23/00 , B29C55/26 , B29C55/28 , G11B5/7305 , B29K2067/00 , B29K2995/0031 , B29K2995/0072 , B29L2023/001 , Y10S264/902
摘要: A process for producing a thin-walled cylindrical body of an aromatic polyester, which comprises(A) heating a continuous thick-walled tubular body of an aromatic polyester by introducing it continuously into a heating zone while feeding a pressure fluid into the thick-walled tubular body,(B) expanding the heated thick-walled tubular body into a cylindrical form, and(C) continuously stretching and taking up the resulting cylindrical expanded body, while at least forming a fold-free portion in the expanded body in its longitudinal direction; and a thin-walled cylindrical body of an aromatic polyester characterized by a specific intrinsic viscosity, density, wall thickness, surface roughness (CLA), and difference of its refractive indices in the circumferential direction and in a direction perpendicular to the circumferential direction, and substantial freedom from folded marks which cannot be removed at a temperature of 80.degree. C.
摘要翻译: 一种制备芳族聚酯薄壁圆柱体的方法,其包括(A)将连续的厚壁管状芳族聚酯加热到加热区,同时将压力流体送入厚壁 (B)将加热的厚壁管体膨胀成圆柱形,(C)连续地拉伸和卷绕所形成的圆柱形膨胀体,同时至少在其纵向上形成膨胀体中的无折叠部分 方向; 以及特征粘度,密度,壁厚,表面粗糙度(CLA)以及其周向和垂直于圆周方向的折射率差异的芳族聚酯的薄壁圆筒体,以及 在80℃的温度下无法除去折痕的实质性自由度。
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