Invention Grant
US07641753B2 PVC-free multilayer tube with more dependable peelability for medical purposes, and process for its production
有权
用于医疗目的具有更可靠的可剥离性的无PVC多层管及其生产方法
- Patent Title: PVC-free multilayer tube with more dependable peelability for medical purposes, and process for its production
- Patent Title (中): 用于医疗目的具有更可靠的可剥离性的无PVC多层管及其生产方法
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Application No.: US10968378Application Date: 2004-10-18
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Publication No.: US07641753B2Publication Date: 2010-01-05
- Inventor: Xiaogang Gao , Uwe Ahr , Karl-Heinz Schmitt
- Applicant: Xiaogang Gao , Uwe Ahr , Karl-Heinz Schmitt
- Applicant Address: DE Bad Homburg
- Assignee: Fresenius Medical Care Deutschland GmbH
- Current Assignee: Fresenius Medical Care Deutschland GmbH
- Current Assignee Address: DE Bad Homburg
- Agency: Kenyon & Kenyon LLP
- Priority: JP10349011 20031017
- Main IPC: F16L1/00
- IPC: F16L1/00 ; B29C65/00 ; B32B37/00 ; B29D31/00 ; B32B27/00 ; B29C47/00 ; B29C63/00

Abstract:
A PVC-free multilayer tube, preferably for medical purposes, with more dependable peelability, comprises at least three layers, of which a base layer comprising a first plastics material has been bonded to at least one connection layer comprising a second plastics material by means of at least one buffer layer arranged between the base layer and the at least one connection layer, the buffer layer comprising a third plastics material, wherein the multilayer tube can be used to mold a coil or a loop with a diameter of down to 50 mm without undesirable kinking. Each of the first and second plastics materials is comprised of at least 25% by weight, based on the total weight of the base layer and the connection layer, respectively, of polyolefins, while the third plastics material has a proportion, based on the total weight of the buffer layer, of more than 75% by weight of a thermoplastic elastomer which is not a polyolefin.
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