Non-woven web having isotropic mechanical properties and preparation method of the same
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorChaeHwan Hong
Life of this patent
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Abstract
The present invention relates to a non-woven web useful for the manufacture of suede-like fabric for a car seat cover and a preparation method thereof. The non-woven web according to the present invention is prepared from a copolymer of polyethylene terephthalate and polytrimethylene terephthalate by dispersion in water using a surfactant and crosslinking using flowing water, and has superior mechanical properties including touch, dyeability, wear resistance, etc. Particularly, with superior isotropic mechanical properties over existing materials, it is suitable to be used as car seat cover material.
Claims10
A non-woven web prepared by dispersing in water single fibers prepared from a copolymer of polyethylene terephthalate (PET) and polytrimethylene terephthalate (PTT) in water and crosslinking the single fibers using water flow.
A preparation method of a non-woven web comprising the steps of:
- condensation polymerizing terephthalic acid, ethylene glycol and 1,3-propanediol to obtain a copolymer;
- spinning the copolymer to form monofilaments and cutting the same to obtain single fibers;
- adding the single fibers along with a surfactant in a bath filled with water and dispersing the same in water by stirring;
- discharging water from the resultant dispersion and adding a polyurethane binder;
- and
- subjecting the resultant mixture of single fibers and polyurethane binder to flowing water to crosslink the single fibers.
Dependencies are inferred from the claim text.