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US 5,470,362 AGranted
Method for making coated abrasive belts
AssigneeMinnesota Mining and Manufacturing Company
InventorsIan Gorsuch, Mark R. Ennis, Robert M. Burgess
Life of this patent
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Abstract
This invention provides a method for making a coated abrasive belt having a backing comprising a hot-melt adhesive throughout the length of the belt. The splice of the coated abrasive belt made by the method has substantially the same thickness, density, and flexibility as the remainder of the belt.
Claims12
A method of making a coated abrasive belt, said method comprising the steps of:
- (a) providing an elongated strip of a flexible backing material having a major surface, complementary ends, a width, a length, at least one major surface, and having an abrasive layer attached to said major surface, said flexible backing material comprising at least one flexible support and a hot-melt adhesive layer, said hot-melt adhesive layer being parallel to said major surface of said flexible backing material and extending the length of said elongated strip;
- (b) abutting said complementary ends to provide a belt;
- (c) applying pressure and heat over an area of said abutting ends sufficient to cause said hot-melt adhesive to flow across said abutting complementary ends;
- and
- (d) allowing said heated area to cool
- to provide a coated abrasive belt, having a length, and a thickness, wherein said thickness is the same throughout its length, said coated abrasive belt having a width equal to said width of said elongated strip, and said hot-melt adhesive being continuous over said abutting complementary ends to provide a splice.
3 more elements
A method of making a coated abrasive belt, said method comprising the steps of:
- (a) providing an elongated strip of a flexible backing material having complementary ends, a width, a length, and at least one major surface, said flexible backing material comprising at least one flexible support and a hot-melt adhesive layer, said hot-melt adhesive layer being parallel to said major surface of said flexible backing material and extending the length of said elongated strip;
- (b) abutting said complementary ends to provide a belt;
- (c) applying pressure and heat over an area of said abutting ends sufficient to cause said hot-melt adhesive to flow across said abutting complementary ends;
- (d) allowing said heated area to cool, whereby said hot-melt adhesive is continuous over said abutting ends and provides a splice;
- and applying an abrasive layer to said major surface during or after steps (a)-(d) to provide a coated abrasive belt, said coated abrasive belt having a thickness, wherein said thickness is the same throughout its length.
2 more elements
Dependencies are inferred from the claim text.