Method for application of viscous hot melt adhesive
Abstract
Abstract A METHOD AND APPARATUS FOR APPLICATION OF A VISCOUS HOT MELT ADHESIVE AT AN ELEVATED TEMPERATURE WHICH COMPRISES IN A HEATED APPARATUS SUBSTANTIALLY ENCOMPASSED BY HEATING MEANS, THE STEPS OF (A) APPLYING A MOLTEN VISCOUS HOT MELT ADHESIVE AT A TEMPERATURE OF FROM ABOUT 150* C. TO ABOUT 300* C. AND, IN SUCH MOLTEN STATE HAVING A VISCOSITY OF FROM ABOUT 800 TO ABOUT 200 POISES, TO A POSITIVE DISPLACEMENT PUMPING MEANS, (B) DISPENDING THE SAID MOLTEN HOT MELT ADHESIVE CONTINUOUSLY FROM THE POSITIVE DISPLACEMENT PUMPING MEANS, AND (C) RECYCLING AT LEAST A PORTION OF THE MOLTEN HOT MELT ADHESIVE THROUGH THE PUMPING MEANS. THIS METHOD AND APPARATUS HAVE PARTICULAR UTILITY FOR THE APPLICATION OF HIGH VISCOSITY HOT MELT ADHESIVES FOR RAPIDLY SECURING ADHESIVE BONDS DURING THE LASTING OF SHOES, IN CONSTRUCTION OF VARIOUS ARTICLES AND IN PACKAGING.
Inventors
- 👤 Intosh K Mc
Bibliographic Details
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