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US 5,234,720 AGranted
Process of preparing lubricant-impregnated fibers
AssigneeEastman Kodak Company
InventorsRichard D. Neal, Shriram Bagrodia, Lewis C. Trent, Mark A. Pollock
Life of this patent
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Abstract
Fibers such as caustic treated non round polyester fibers are prepared having certain lubricants strongly adhered to the surfaces thereof. These fibers are prepared by contacting the fibers, such as immediately prior to a crimping device, with a suitable heated hydrophilic lubricant in a processing operation followed by heating to dry or the lubricant onto and/or into the surface of the fibers.
Claims19
A process for treating fibers comprising:
- (A) contacting fibers in a tow band with a free flowing solution containing about 5 weight percent or more of a substantially non-tacky antistatic hydrophilic lubricant at a temperature between about 40.degree. C. and the boiling point of the solution;
- (B) spreading said solution into said tow band to substantially coat all surfaces of said fibers;
- and
- (C) heating said fibers at a temperature of about 40.degree. C. or more for a sufficient time to dry the lubricant-coated fibers
- wherein any excess liquid present on the fibers has been removed prior to said contacting of step (A) and said tow band coated with said solution is crimped after said contacting of step (A) but prior to said heating of step (C).
2 more elements
A process for treating fibers comprising:
- (A) contacting fibers in a tow band with a free flowing solution containing about 5 weight percent or more of a substantially non-tacky antistatic hydrophilic lubricant containing a mixture of high and low molecular weight polyethylene glycol monolaurates at a temperature between about 40.degree. C. and the boiling point of the solution;
- (B) spreading said solution into said tow band to substantially coat all surfaces of said fibers;
- and
- (C) heating said fibers at a temperature of about 40.degree. C. or more for a sufficient time to dry the lubricant-coated fibers.
1 more element
A process for treating fibers comprising:
- (A) contacting binder fibers in a tow band with a free flowing solution containing about 5 weight percent or more of a substantially non-tacky antistatic hydrophilic lubricant selected from the group consisting of polyethylene glycol sorbitan monolaurate and polyethylene glycol sorbitan monostearate at a temperature between about 40.degree. C. and the boiling point of the solution;
- (B) spreading said solution into said tow band to substantially coat all surfaces of said binder fibers;
- and
- (C) heating said binder fibers at a temperature of about 40.degree. C. or more for a sufficient time to dry the lubricant-coated fibers.
1 more element
Dependencies are inferred from the claim text.