US 2009/0288728 A1 · Multi-layer tube

Abstract

A multi-layer tube of thermoplastic resin exhibiting barrier capacity, flexibility, transparency, kink resistance and chemical resistance especially used to transport and supply various types of liquids, which multi-layer tube realizes high steam barrier performance and excels co-extrusion forming performance. There is provided a multi-layer tube comprising at least a flexible elastomer layer, a fluoro resin layer excelling in steam barrier performance and chemical stability and an adhesive resin layer disposed for bonding the layers. This multi-layer tube can find application in medical use including fluid infusion or blood transfusion tubes, use in automobile including cleaning liquid or fuel liquid tubes and use in machine instruments including ink supply tubes of printer units provided in printer, various measuring equipments and observation equipments, etc.

Claims18

Dependent claims

A multi-layer tube comprising

(A) a barrier layer consisting of laminated fluoro resin, and
(B) at least one other layer,
the barrier layer having a thickness no greater than 20% of the average thickness of the multi-layer tube,
wherein the fluoro resin constituting the barrier layer consists of a homo polymer of chlorotrifluoroethylene having a melting point no greater than 220° C., a melt flow rate (MFR) between 0.1 and 10 g/10 min at a temperature of 230° C., and a tensile modulus between 750 and 1500 MPa.

1 more element

A multi-layer tube comprising

(A) a barrier layer consisting of laminated fluoro resin, and
(B) at least one other layer,
the barrier layer having a thickness no greater than 20% of the average thickness of the multi-layer tube,
wherein the fluoro resin constituting the barrier layer consists of a copolymer of chlorotrifluoroethylene having a melting point no greater than 220° C., a melt flow rate (MFR) between 0.01 and 10 g/10 min at a temperature of 230° C., and a flexural modulus between 1200 and 1800 MPa.

1 more element

Dependencies are inferred from the claim text.

Multi-layer tube

Life of this patent

Multi-layer tube

Life of this patent

Abstract

Claims18