IP Library › Granted Patent US 7,647,949
Granted Patent B2
US 7,647,949 · App. 11/606,269 · Granted Jan 19, 2010

Co-extruded tubing

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Quick Facts
Patent No.
US 7,647,949
App. No.
11/606,269
Granted
Jan 19, 2010
Kind
B2
Abstract

A co-extruded tubing for the administration of intravenous fluids has an outer layer of a polyester. An inner fluid-contact layer may be of a polyethylene or of a thermoplastic polyurethane. Where the inner fluid-contact layer is of polyethylene, an intermediate tie layer of ethylene-vinyl acetate copolymer may be included to prevent delamination.

Claims (24)

1. A co-extruded tubing for the transfer of fluids, said tubing having at least two layers comprising:

an outer layer, said outer layer comprising a polyester; and

an inner fluid-contacting layer comprising:

a thermoplastic polyurethane elastomer.

2. A co-extruded tubing as claimed in claim 1 wherein said polyester is a copolyester thermoplastic elastomer.

3. A co-extruded tubing as claimed in claim 2 wherein said polyester is a copolyester thermoplastic elastomer is a polyester ether thermoplastic elastomer.

4. A co-extruded tubing as claimed in claim 3 wherein said copolyester ether thermoplastic elastomer is a copolyester of alternating hard poly-1,4-butanediol terephthalate and soft long-chain polyalkylene ether terephthalate block copolymers connected by ester and ether linkages.

5. A co-extruded tubing as claimed in claim 1 wherein said outer layer has a thickness in a range from about 0.025 mm to about 0.152 mm.

6. A co-extruded tubing as claimed in claim 1 wherein said thermoplastic polyurethane elastomer is an aromatic polyether-based thermoplastic polyurethane elastomer.

7. A co-extruded tubing as claimed in claim 1 wherein said thermoplastic polyurethane elastomer is an aliphatic polyether-based thermoplastic polyurethane elastomer.

8. A co-extruded tubing as claimed in claim 1 wherein said inner fluid-contacting layer has a thickness in a range from about 0.025 mm to about 0.762 mm.

9. A co-extruded tubing for the transfer of fluids, said tubing having at least three layers comprising:

an outer layer, said outer layer comprising a polyester;

an inner fluid-contacting layer comprising a polyethylene; and

an intermediate bonding layer between said outer layer and said inner fluid-contacting layer, said intermediate bonding layer comprising an ethylene-vinyl acetate copolymer.

10. A co-extruded tubing as claimed in claim 9 wherein said polyester is a copolyester thermoplastic elastomer (TPE).

11. A co-extruded tubing as claimed in claim 10 wherein said copolyester thermoplastic elastomer is a copolyester ether thermoplastic elastomer.

12. A co-extruded tubing as claimed in claim 9 wherein said polyethylene is a branched low-density polyethylene.

13. A co-extruded tubing as claimed in clam 9 wherein said polyethylene is a linear high-density polyethylene.

14. A co-extruded tubing as claimed in claim 9 wherein said intermediate bonding layer is an ethylene-vinyl acetate copolymer having a vinyl acetate content of about 28%.

15. A co-extruded tubing as claimed in claim 9 wherein said intermediate bonding layer has a thickness in a range from about 0.025 mm to about 0.152 mm.

16. A co-extruded tubing for the transfer of fluids, said tubing having at least two layers comprising:

an outer layer, said outer layer comprising a polyester comprising a copolyester thermoplastic elastomer comprising a copolyester ether thermoplastic elastomer comprising a copolyester of alternating hard poly-1,4-butanediol terephthalate and soft long-chain polyalkylene ether therephthalate block copolymers connected by ester and ether linkages; and

an inner fluid-contacting layer.

Assignments (23)
SECURITY INTEREST Recorded Nov 15, 2017
From: TEKNI-PLEX, INC.; NATVAR HOLDINGS, LLC; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; TRI-SEAL HOLDINGS, INC.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
Reel/Frame 044763/0001 →
SECURITY INTEREST Recorded Nov 15, 2017
From: TEKNI-PLEX, INC.; NATVAR HOLDINGS, LLC; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; TRI-SEAL HOLDINGS, INC.
To: BMO HARRIS BANK, N.A.
Reel/Frame 044763/0339 →
RELEASE OF SECURITY INTEREST Recorded Oct 18, 2017
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: TEKNI-PLEX, INC.; NATVAR HOLDINGS, LLC; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; TRI-SEAL HOLDINGS, INC.
Reel/Frame 044342/0866 →
RELEASE OF SECURITY INTEREST Recorded Oct 18, 2017
From: BANK OF AMERICA, N.A.
To: TEKNI-PLEX, INC.; NATVAR HOLDINGS, LLC; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; TRI-SEAL HOLDINGS, INC.
Reel/Frame 044225/0079 →
RELEASE OF SECURITY INTEREST Recorded Oct 18, 2017
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: TEKNI-PLEX, INC.; NATVAR HOLDINGS, LLC; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; TRI-SEAL HOLDINGS, INC.
Reel/Frame 044342/0928 →
FIRST LIEN PATENT SECURITY AGREEMENT Recorded Jun 2, 2015
From: NATVAR HOLDINGS, LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 035812/0647 →
ABL PATENT SECURITY AGREEMENT Recorded Jun 2, 2015
From: NATVAR HOLDINGS, LLC
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 035812/0606 →
SECOND LIEN PATENT SECURITY AGREEMENT Recorded Jun 2, 2015
From: NATVAR HOLDINGS, LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 035812/0671 →
RELEASE OF SECURITY INTEREST IN PATENTS (RELEASES RF 028310/0199) Recorded Jun 1, 2015
From: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: TEKNI-PLEX, INC.; NATVAR HOLDINGS, INC.; TRI-SEAL HOLDINGS, INC.; TPI ACQUISITION SUBSIDIARY, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES INVESTMENTS, INC.
Reel/Frame 035808/0561 →
SECURITY AGREEMENT Recorded Jun 4, 2012
From: TEKNI-PLEX, INC.; NATVAR HOLDINGS, INC.; TRI-SEAL HOLDINGS, INC.; TPI ACQUISITION SUBSIDIARY, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES INVESTMENTS, INC.
To: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 028310/0199 →
PATENT RELEASE AGREEMENT Recorded May 31, 2012
From: DEUTSCHE BANK TRUST COMPANY AMERICAS AS COLLATERAL AGENT
To: NATVAR HOLDINGS, INC.
Reel/Frame 028332/0519 →
PATENT RELEASE AGREEMENT Recorded May 31, 2012
From: HSBC BANK USA, NATIONAL ASSOCIATION AS TRUSTEE AND COLLATERAL AGENT
To: TEKNI-PLEX, INC.; PURETEC CORPORATION, DELAWARE CORPORATION; NATVAR HOLDINGS, INC., A DELAWARE CORPORATION; TRI-SEAL HOLDINGS, INC., A DELAWARE CORPORATON; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC., A DELWARE CORPORATION; PLASTIC SPECIALTIES AND TECHNOLOGIES INVESTMENTS, INC., A DELAWARE CORPORATION; BURLINGTON RESINS, INC., A DELAWARE CORPORATION; TPI ACQUISITION SUBSIDIARY, INC., A DELAWARE CORPORATION; DISTRIBUTORS RECYCLING, INC., A DELWARE CORPORATION; TP/ELM ACQUISITION SUBSIDIARY, INC., A DELAWARE CORPORATION
Reel/Frame 028301/0582 →
SECURITY AGREEMENT Recorded Feb 9, 2011
From: TEKNI-PLEX, INC.; TP/ELM ACQUISITION SUBSIDIARY, INC.; NATVAR HOLDINGS, INC.; TRI-SEAL HOLDINGS, INC.; TPI ACQUISITION SUBSIDIARY, INC.; PURETEC CORPORATION; BURLINGTON RESINS, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES INVESTMENTS, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 025767/0887 →
GRANT OF SECURITY INTEREST IN U.S. PATENTS Recorded Nov 23, 2010
From: NATVAR HOLDINGS, INC.
To: DEUTSCHE BANK TRUST COMPANY AMERICAS, AS COLLATERAL AGENT
Reel/Frame 025412/0465 →
RELEASE OF PATENT SECURITY INTEREST Recorded Nov 22, 2010
From: CITICORP USA, INC.
To: PURETEC CORPORATION; NATVAR HOLDINGS, INC.; TRI-SEAL HOLDINGS, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; BURLINGTON RESINS, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES INVESTMENTS, INC.; DISTRIBUTORS RECYCLING, INC.; TPI ACQUISITION SUBSIDIARY, INC.; TP/ELM ACQUISITION SUBSIDIARY, INC.
Reel/Frame 025390/0258 →
RELEASE OF PATENT SECURITY INTEREST Recorded Nov 22, 2010
From: CITICORP USA, INC.
To: TEKNI-PLEX, INC.
Reel/Frame 025390/0354 →
SECURITY AGREEMENT Recorded Nov 16, 2010
From: TEKNI-PLEX, INC.; NATVAR HOLDINGS, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES INVESTMENT, INC.; TPI ACQUISITION SUBSIDIARY, INC.; TRI-SEAL HOLDINGS, INC.
To: HSBC BANK USA
Reel/Frame 025365/0752 →
SECURITY AGREEMENT Recorded Nov 16, 2010
From: TEKNI-PLEX, INC.; NATVAR HOLDINGS, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES INVESTMENT, INC.; TPI ACQUISITION SUBSIDIARY, INC.; TRI-SEAL HOLDINGS, INC.
To: HSBC BANK USA
Reel/Frame 025365/0762 →
GRANT OF SECURITY INTEREST IN UNITED STATES PATENTS Recorded Feb 8, 2008
From: PURETEC CORPORATION; NATVAR HOLDINGS, INC.; TRI-SEAL HOLDINGS, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES, INC.; BURLINGTON RESINS, INC.; PLASTIC SPECIALTIES AND TECHNOLOGIES INVESTMENTS, INC.; DISTRIBUTORS RECYCLING, INC.; TPI ACQUISITION SUBSIDIARY, INC.; TP/ELM ACQUISITION SUBSIDIARY, INC.
To: CITICORP USA, INC.
Reel/Frame 020478/0767 →
GRANT OF SECURITY INTEREST IN UNITED STATES PATENTS Recorded Feb 7, 2008
From: TEKNI-PLEX, INC
To: CITICORP USA, INC.
Reel/Frame 020478/0352 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 5, 2007
From: DONOHUE, ROBERT JAMES
To: NATVAR HOLDINGS, INC.
Reel/Frame 018884/0448 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 5, 2007
From: COGGINS III, GEORGE
To: NATVAR HOLDINGS, INC.
Reel/Frame 018884/0450 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 5, 2007
From: BENSON, PERRY
To: NATVAR HOLDINGS, INC.
Reel/Frame 018884/0452 →