公开(公告)号：US20140044906A1

公开(公告)日：2014-02-13

申请号：US14057717

申请日：2013-10-18

Applicant: Dow Global Technologies Inc.

Inventor： Joseph Dooley ,  Jeffrey M. Robacki ,  Mark A. Barger ,  Robert E. Wrisley ,  Sam l. Crabtree ,  Calvin L. Pavlicek

IPC: B32B1/08

CPC classification number: B32B1/08 ,  B29C47/0023 ,  B29C47/0026 ,  B29C47/003 ,  B29C47/0054 ,  B29C47/0057 ,  B29C47/061 ,  B29C47/062 ,  B29C47/065 ,  B29C47/067 ,  B29C47/26 ,  B29C47/263 ,  B29C47/28 ,  B29C47/56 ,  B29C47/707 ,  B29C49/04 ,  B29C49/22 ,  B29C55/28 ,  B29L2023/001 ,  B32B3/06 ,  B32B3/263 ,  B32B3/28 ,  B32B5/18 ,  B32B5/22 ,  B32B5/32 ,  B32B27/065 ,  B32B27/08 ,  B32B27/18 ,  B32B27/20 ,  B32B27/302 ,  B32B27/304 ,  B32B27/306 ,  B32B27/308 ,  B32B27/32 ,  B32B27/325 ,  B32B27/34 ,  B32B27/36 ,  B32B27/365 ,  B32B27/40 ,  B32B37/00 ,  B32B37/153 ,  B32B2266/0214 ,  B32B2270/00 ,  B32B2272/00 ,  B32B2307/50 ,  B32B2307/518 ,  B32B2307/546 ,  B32B2307/558 ,  B32B2307/5825 ,  B32B2307/72 ,  B32B2307/7242 ,  B32B2307/7265 ,  B32B2439/70 ,  B32B2439/80 ,  B32B2597/00 ,  Y10T428/1352 ,  Y10T428/1393

Abstract: Disclosed are multilayer film structures having annular profiles, and methods and apparatus of making the structures disclosed. The annular multilayer articles have a uniform thickness, at least four layers and comprise overlapped and non-overlapped circumferential areas; wherein the layer structure of the non-overlapped area is doubled in the overlapped layer. A method of making the structure includes providing a multilayer flow stream with at least four layers of thermoplastic resinous materials; feeding the multilayer flow stream to a distribution manifold of an annular die to form an annular multilayer flow stream; and removing the annular multilayer flow stream from the annular die to form the annular multilayer structure. Also disclosed is an apparatus, comprising: a feedblock, with optional layer multiplier, that provides a multilayer flow stream of at least four layers to the manifold of an annular die; and an annular die having at least one distribution manifold that extrudes a multilayer flow stream.

Abstract translation: 公开了具有环形轮廓的多层膜结构以及制造所述结构的方法和装置。 环形多层制品具有均匀的厚度，至少四层，并且包括重叠和非重叠的圆周区域; 其中非重叠区域的层结构在重叠层中加倍。 制造该结构的方法包括提供具有至少四层热塑性树脂材料的多层流动流; 将多层流动流供给到环形模头的分配歧管以形成环形多层流动流; 以及从所述环形模具移除所述环形多层流动流以形成所述环形多层结构。 还公开了一种装置，包括：具有任选的层乘法器的进料块，其向环形模头的歧管提供至少四层的多层流动流; 以及具有至少一个挤出多层流动流的分配歧管的环形模头。