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:
Aug. 20, 2024
Filed:
Aug. 14, 2020
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J 175/04 (2006.01); B29C 44/28 (2006.01); B29C 44/32 (2006.01); B29C 44/46 (2006.01); B29C 44/52 (2006.01); B29K 75/00 (2006.01);
U.S. Cl.
CPC ...
C09J 175/04 (2013.01); B29C 44/28 (2013.01); B29C 44/321 (2016.11); B29C 44/461 (2013.01); B29C 44/52 (2013.01); B29K 2075/00 (2013.01);
Abstract
Laminated panels are made in a process whereby a starting foam formulation is processed through a mixhead, passed through a branched distribution system and dispensed through multiple outlets of the distribution system to produce a foam layer on a bottom facing layer. The foam layer is monitored for the presence of surface bubbles. When surface bubbles are observed, the backpressure in the mixhead is increased to reduce or eliminate the surface bubbles. An apparatus for performing the process includes an adjustment means at or upstream of a first branch point in the distribution system to increase or decrease the backpressure in the mixhead.