Tufting process and apparatus for manufacturing weatherstripping

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

1122662, 112 803, 112 8031, 112 8032, 112 804, 156435, 428 85, 428 92, 428 95, B32B 500

Patent

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047131306

ABSTRACT:
Weatherstripping is produced continuously by two or more spaced apart tufting heads, which may be operating at different stitch rates. The or each strip of weatherstripping comprises at least two rows of tufts sequentially inserted by two tufting heads. Heated dies may be located between the tufting heads for transforming rows of tufts inserted by the first tufting head at least partially into film to form barrier fins. The knuckles of the tufts are flattened, a secondary backing applied, and then individual strips of weatherstripping separated by ultrasonically slitting, all as a continuous process enabling weatherstripping of various constructions to be efficiently and economically produced by tufting.

REFERENCES:
patent: 3175256 (1965-03-01), Horton
patent: 3404487 (1968-10-01), Johnson
patent: 3616137 (1971-10-01), Horton
patent: 3745053 (1973-07-01), Johnson et al.
patent: 4164599 (1979-08-01), Kessler
patent: 4288482 (1981-09-01), Beck
patent: 4548849 (1985-10-01), Garnett

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