David W Babb

US Patent:

20060228503, Oct 12, 2006

Filed:

Feb 24, 2006

Appl. No.:

11/361616

Inventors:

Marvin Havens - Greer SC, US
Susannah Gelotte - Simpsonville SC, US
David Babb - Duncan SC, US
Jeffrey Boland - Moore SC, US
Solomon Bekele - Taylors SC, US

International Classification:

B32B 27/08

US Classification:

428035700

Abstract:

A tubular lay-flat film includes outer polymeric layers, at least one intermediate layer including a polyamide, and self-welded polymeric layers in contact with one another; wherein in various embodiments (a) the outer polymeric layers each include a blend of an olefinic polymer and a polydimethylsiloxane; (b) the at least one intermediate layer including a polyamide includes a blend of polyamide and ionomer resin; and (c) the self-welded polymeric layers each include a blend of an anhydride grafted ethylene copolymer having a density of from 0.916 to 0.935 grams/cubic centimeter, and a single site catalyzed ethylene/alpha-olefin copolymer having a density of from 0.85 to 0.915 grams/cubic centimeter.

US Patent:

55207642, May 28, 1996

Filed:

Apr 7, 1995

Appl. No.:

8/418744

Inventors:

Gloria G. Toney - Greer SC
Robert A. Young - Fountain Inn SC
David V. Babb - Duncan SC

Assignee:

W.R. Grace & Co.-Conn. - Duncan SC

International Classification:

B29C 4704

US Classification:

15624417

Abstract:

A laminate comprises a first substrate including a first layer of a blend of a polyolefin and an antifogging agent, and a bonding layer of polyolefin, preferably an ethylene unsaturated ester copolymer or low density polyethylene; a second substrate bonded to the bonding layer of the first substrate and comprising polyester or nylon; and a conventional adhesive between the first and second substrates; the bonding layer pre-treated by corona discharge before wind-up, and again treated by corona discharge before lamination. The laminates of the present invention exhibit much improved bond strength compared with conventional laminates.

US Patent:

55675336, Oct 22, 1996

Filed:

May 11, 1993

Appl. No.:

8/060394

Inventors:

Gloria G. Toney - Greer SC
Robert A. Young - Fountain Inn SC
David V. Babb - Duncan SC

Assignee:

W. R. Grace & Co.-Conn. - Duncan SC

International Classification:

B32B 2708
B32B 2706

US Classification:

4284755

Abstract:

A laminate comprises a first substrate including a first layer of a blend of a polyolefin and an antifogging agent, and a bonding layer of polyolefin, preferably an ethylene unsaturated ester copolymer or low density polyethylene; a second substrate bonded to the bonding layer of the first substrate and comprising polyester or nylon; and a conventional adhesive between the first and second substrates; the bonding layer pre-treated by corona discharge before wind-up, and again treated by corona discharge before lamination. The laminates of the present invention exhibit much improved bond strength compared with conventional laminates.