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US 2010/0136334 A1Published application
Fire Retardant Thread and Method of Manufacture
AssigneeIsraeli Processing Co., Ltd.
InventorYehezkiel Gotshal
Life of this patent
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Abstract
The present invention is a fire retardant sewing thread, having a coating of a brominated acrylic copolymer and a non ionic surfactant or a bromine or phosphorus based flame retardant and an adhesive and a process for making the fire retardant thread.
Claims20
A fire retardant thread comprising:
- a. an inner portion of sewing thread;
- b. a fire retardant coating disposed on said sewing thread substantially completely covering said sewing thread, said coating comprising:
- i. brominated acrylic copolymer;
- ii. a non ionic surfactant;
- iii. optionally, a thickening agent.
2 more elements
A fire retardant thread comprising:
- a an inner portion of sewing thread;
- b a fire retardant coating disposed on said sewing thread substantially completely covering said sewing thread, said coating comprising:
- bromine or phosphorus based FR agent;
- ii. polyamide based adhesive
- iii. a non ionic surfactant;
- iv. optionally, a thickening agent.
3 more elements
A process for preparing fire retardant thread comprising the steps of:
- obtaining sewing thread;
- preparing a coating solution of brominated polyacrylic polymer or bromine or phosphorus based FR and adhesive and non ionic surfactant in a vessel;
- passing said thread into a trough containing the coating solution;
- removing the thread from the trough;
- squeezing said thread until said thread has absorbed an amount of solution of about 20-250% by weight of said coating solution;
- passing said thread through a drying oven at about 80° C. to 180° C.;
- passing said thread through a curing oven set at about 110° C. to 260° C.;
- winding said thread around a bobbin, after passing over a lick roll with lubricant.
5 more elements
Dependencies are inferred from the claim text.