Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Automatic and/or material-triggered control
Patent
1995-04-13
1997-04-08
Johnstone, Adrienne C.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Automatic and/or material-triggered control
156441, 156497, 156498, 425 831, 425223, D04H 316, B29C 4734, B29C 4788, B29C 4792
Patent
active
056183739
ABSTRACT:
A multiplicity of closely spaced thermoplastic polymer filaments are extruded from an elongated orifice plate through a draft protected free-fall zone onto a rotating cylinder surface, landing between about 30.degree. before and after upper dead center of rotation. Filament extrusion velocity and cylinder rotational velocity are coordinated to pile the filament into a mat continuum of accumulated filament laps. Filament temperature and viscosity are coordinated to provide thermoplastic bonding at the filament lap crossings to integrate the continuum. The rotating cylinder carries the matted continuum over an arc of about 150.degree. to 210.degree. to about lower dead center of rotation where the mat peels from the cylinder surface. After separation from the cylinder surface, the mat is supported by a transitional air jet on to a horizontal run surface of a traveling endless belt for consolidated support until the lap crossing bond joints are securely set.
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Oaks David K.
Redwine Stephen J.
Johnstone Adrienne C.
Plastic Floor Mats Inc.
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