Title: Low-density abrasive product and method of making the same

Abstract: A low-density abrasive product formed of a uniform cross-section lofty web comprised of continuous three-dimensionally undulated inter-engaged autogenously bonded filaments of high yield strength filament-forming material impregnated with a tough adherent binder which adherently bonds the filaments together and also bonds a multitude of abrasive granules uniformly dispersed throughout the web. The abrasive article is made by forming the web by an extrusion process, uniformly coating the filaments of the web with a liquid curable binder resin, depositing the abrasive granules onto the web coating, curing the first binder coating, applying a second coating of liquid curable binder and then curing the binder.

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Inventors: Fitzer, Robert C. (Birchwood Village, MN, US)

Application Number: 847922
Filing Date: 1977-11-02
Publication_date: 1980-10-14
Assignee: Minnesota Mining and Manufacturing Company (Saint Paul, MN)
Primary Class(es): 51/295 51/294, 51/297, 51/298
Other Classes:
US Patent Ref:

2740725	Apr, 1956	Ball	51/298.
2810426	Oct, 1957	Till et al.	51/296.
2958593	Nov, 1960	Hoover et al.	51/296.
2970929	Feb, 1961	Hansen et al.	51/298.
3016294	Jan, 1962	Haywood	51/298.
3020139	Feb, 1962	Camp et al.	51/298.
3026190	Mar, 1962	McMahon et al.	51/295.
3169899	Feb, 1965	Steuber	51/298.
3260582	Jul, 1966	Zimmer et al.	51/295.
3537121	Nov, 1970	McAvoy	51/295.
3547608	Dec, 1970	Kitazawa	51/294.
3686049	Aug, 1972	Manner et al.	264/168.
3687759	Aug, 1972	Stapp	264/168.
3691004	Sep, 1972	Werner et al.	264/168.
3837988	Sep, 1974	Hennen et al.	51/294.
3852152	Dec, 1974	Werner	264/168.
3936337	Feb, 1976	Stapp	156/157.
4011063	Mar, 1977	Johnston	51/295.
4018575	Apr, 1977	Davis et al.	51/298.

Other Refs:
Primary Examiner: Arnold, Donald J.
Assistant Examiner:
Attorney: Alexander; Cruzan, Sell; Donald M., Francis; Richard