Patent · US Active

Tube for a medical container

US11052233B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignees

N.V. Nutricia · NL
RAUMEDIC AG · DE

Inventors

Reinhold Wolkenstoerfer · Neunkirchen, DE
Ralf Ziembinski · Hof, DE

Key dates

Filing date	Oct 13, 2017
Grant date	Jul 6, 2021
Priority date	—
Expiry date	Oct 13, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB32B2597/00
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A tube for a medical container has a tube wall which consists of at least two layers. According to the invention, at least one layer contains a styrene-containing thermoplastic polymer (S-TPE), in particular a styrene-butadiene block copolymer (SBC) or a copolyester, a copolyester ether or a cyclic olefin copolyester. The at least one other layer contains ethylene-vinyl acetate copolymer (EVA), preferably with a vinyl acetate (VA) portion in the ethylene-vinyl acetate copolymer of from 10% to 30%, preferably 14% to 28%. The EVA can be mixed with a thermoplastic polybutene and/or SEBS to improve the tube properties. The tube wall can have a two-layer structure with an inner or an outer layer which contains the S-TPE, copolyester, copolyester ether or cyclic olefin copolyester, or a three-layer structure with an outer and inner layer containing the S-TPE or copolyester or copolyester ether.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.