Applying grit particles to a continuous web

Details Applying grit particles to a continuous web Applying grit particles to a continuous web

1996-01-22

1997-03-18

Beck, Shrive

Coating processes

Measuring, testing, or indicating

427180, 427202, 427428, 427359, 118117, 118263, 118693, 428143, B05D 112, B05D 128, B05C 1102, B05C 108

Patent

active

056120818

ABSTRACT:
To apply hot grit particles to a continuous thermoplastic web such as a geonet, the web is brought to the upper part of the surface of a roller which is rotating in a container containing grit particles. A controlled layer of grit particles is carried up over the upper part of the roller, and the particles are heated by halogen emitters and are pressed into the web, causing local melting of the web so that the grit particles are embedded and firmly retained. Grit particles are added to a hopper and the top surface of the mass of grit particles adjacent the ascending part of the roller surface is kept at a controlled level below the uppermost part of the roller. Surplus grit particles not taken up by the web are recirculated by interaction with the roller surface.

REFERENCES:
patent: 2748019 (1956-05-01), Schramm, Jr.
patent: 2899288 (1959-08-01), Barclay
patent: 3230672 (1966-01-01), Anthon
patent: 3314293 (1967-04-01), Schraeder
patent: 3813231 (1974-05-01), Gilbert et al.
patent: 4041197 (1977-08-01), Gagne
patent: 4264644 (1981-04-01), Schaetti
patent: 4407867 (1983-10-01), Bruck et al.
J.M.N. Engineering Leaflet "Polymer Coating Technology". No Date.
J.M.N. Engineering Leaflet "Special Purpose Machinery". No Date.

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