Process for the manufacture of abrasives

Details Process for the manufacture of abrasives Process for the manufacture of abrasives

1979-12-06

1981-11-03

Czaja, Donald E.

Abrasive tool making process, material, or composition

Laminating

51295, 51298, B24D 1100

Patent

active

042983568

ABSTRACT:
Process for the manufacture of an abrasive material comprising at least two binder layers formed from at least one aqueous resol I prepared from a monohydric phenol and formaldehyde (molar ratio of phenol to formaldehyde 1:(1.1 to 2.5)) by the application of a first binder layer onto a carrier material, scattering abrasive particles thereon, drying the covering layer in a horizontal dryer to displacement resistance and thereafter cooling with an air stream, application of a second binding agent layer and in similar manner to the first step, drying to imprint resistance and thereafter cooling, whereby the heating and cooling are each effected by means of an air stream through slit nozzles arranged transversely to the direction of travel of the abrasive web and, after loosely forming the product into a roll, final curing is effected on the product in roll form, the coated carrier material being conveyed at speeds above 5 m/min through the dryers which have well defined and individually controllable heating and cooling zones and the air stream has a velocity of 5 to 200 m/s at the nozzle outlets and a temperature of 20 to 300.degree. C., the air being extracted through adjacent extraction nozzles.

REFERENCES:
patent: 2248853 (1941-07-01), Carlton et al.
patent: 3016294 (1962-01-01), Haywood
patent: 3089763 (1963-05-01), Gladstone
patent: 3861892 (1975-01-01), Wisdom et al.
patent: 4018574 (1977-04-01), Dyer
patent: 4035961 (1977-07-01), Pemrick et al.
patent: 4175931 (1979-11-01), Teschner

Affiliated with

Also associated with

Rating

Process for the manufacture of abrasives does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the manufacture of abrasives, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the manufacture of abrasives will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1062741