Back to results
US 6,635,703 B1Granted
Very high solids adhesive
AssigneePremark RWP Holdings, Inc.
InventorsDaniel Charles Purvis, John James, John Paul Jones
Life of this patent
Estimating the term…
Abstract
A method of making a contact adhesive includes the steps of mixing a solvent with a rubber blend and/or resin for making a contact adhesive and then processing the solvent/rubber/resin blend until a desired lowered viscosity is reached while obtaining a solids content of greater than 30 weight percent. The contact adhesive has a viscosity capable of allowing atomization of an adhesive which contains a solids content of greater than 30 weight percent.
Claims9
A method of making a contact adhesive, comprising the steps of:
- mixing one or more of a solvent, a mixture of rubbers, and a tackifying resin to form a blend for making a contact adhesive;
- and
- processing the blend until a predetermined lowering of viscosity is reached and obtaining a final solids content of greater than 30 weight percent, the step of processing including shearing the blend in a high pressure shearing device which reduces end particles and droplets in size to thereby lower the viscosity of the blend sufficiently for subsequent spraying, wherein the resulting contact adhesive has a predetermined VOC of less than 400 grams per liter.
Dependencies are inferred from the claim text.