The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 2006
Filed:
Apr. 02, 2003
Atul Mehta, New Berlin, WI (US);
Michael Neperud, Hubertus, WI (US);
Eric Roussel, Dardilly, FR;
Bostik, Inc., Wauwatosa, WI (US);
Abstract
A method and apparatus for post mixing an additive with a hot melt adhesives. The method includes the steps of providing a source of molten hot melt adhesive, feeding the hot melt adhesive to an inlet of a mixer, simultaneously feeding an additive for the hot melt adhesive to the inlet of the mixer, mixing the additive and molten hot melt adhesive in the mixer to form a homogeneous mixture, and recovering the homogenous mixture. The additive is preferably selected from wetness indicators, antimicrobial agents, pigments, dyes, ultraviolet light absorbers, antioxidants, fluorescent agents, pH indicators and fragrances. The method may be practiced either on a batch basis, or on a continuous basis. The apparatus includes a vessel containing molten hot melt adhesive, a mixer located downstream from the vessel, the mixer having an inlet and an outlet, a first pump located between the vessel and the mixer for pumping molten hot melt adhesive from the vessel to the inlet of the mixer, a source of an additive for the hot melt adhesive, and a second pump located between the source of the additive and the mixer for pumping the additive to the inlet of the mixer. The mixer may comprise either a static mixer or a dynamic mixer.