Texture softness sensing

Details Texture softness sensing Texture softness sensing

1988-07-15

1989-09-26

Shoap, Allan N.

Measuring and testing

Sheet, woven fabric or fiber

73573, 73 78, G01N 1900

Patent

active

048691011

ABSTRACT:
Apparatus and method for use in measuring the softness of a fibrous product comprises a piezoelectric polymer film sensor, preferably polyvinylidene (di)fluoride with adhered opposed electrode surfaces, a sample of the fibrous product in direct contact with one of the sensor electrode surfaces, acutation components acoustically activating the fibrous product sample to cause the film sensor to generate an output electrical signal, and a spectrum analyzer for characterizing the fibrous product softness from the output electrical signal.

REFERENCES:
patent: 2752781 (1956-07-01), Thorsen
patent: 2922303 (1960-01-01), Veneklasen et al.
patent: 3683681 (1972-08-01), Taylor
patent: 4379211 (1983-04-01), Joscelyn et al.
patent: 4548081 (1985-10-01), Wolthausen
patent: 4607145 (1986-08-01), Ravinet et al.
patent: 4735087 (1988-04-01), Haurani et al.

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