Title: Mixed cross-section staple filament mixtures and yarn therefrom

Abstract: Crimped polyamide staple filament mixtures and yarn therefrom having a high bulk, high luster free from objectionable sparkle and glitter, and improved resistance to soiling are produced. The novel yarn is a blend of trilobal polyamide filaments having different cross-sections, i.e., modification ratios, within specified ranges and specified proportions for each cross-sectional type of filament. This yarn has particular utility as carpet yarn. The method for producing the novel yarn comprises blending the above-described mixed cross-section filaments.

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Inventors: Shah, Chandrakant S. (Seaford, DE, US)

Application Number: 560117
Filing Date: 1975-03-20
Publication_date: 1976-11-30
Assignee: E. I. DuPont de Nemours and Company (Wilmington, DE)
Primary Class(es): 57/253 57/2, 57/254, 57/298
Other Classes:
US Patent Ref:

2939202	Jun, 1960	Holland	57/140.
3033240	May, 1962	Bottorf	57/34.
3097416	Jul, 1963	McKinney	57/140.
3220173	Nov, 1965	Pitzl	57/140.
3249669	May, 1966	Jamieson	57/140.
3802177	Apr, 1974	Sekiguchi	57/140.

Other Refs:
Primary Examiner: Watkins, Donald E.
Assistant Examiner:
Attorney: