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:
Nov. 20, 2018
Filed:
Jun. 24, 2015
Applicant:
Billerudkorsnäs Ab, Solna, SE;
Inventors:
Assignee:
BILLERUDKORSNÄS AB, Solna, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D 30/08 (2006.01); D21H 27/10 (2006.01); D21H 19/20 (2006.01); D21H 19/36 (2006.01); D21H 19/38 (2006.01); D21H 19/82 (2006.01); B65D 85/00 (2006.01); C04B 14/06 (2006.01); C04B 28/04 (2006.01); D21H 27/30 (2006.01);
U.S. Cl.
CPC ...
D21H 27/10 (2013.01); B65D 31/02 (2013.01); B65D 31/04 (2013.01); B65D 85/70 (2013.01); C04B 14/06 (2013.01); C04B 28/04 (2013.01); D21H 19/20 (2013.01); D21H 19/36 (2013.01); D21H 19/385 (2013.01); D21H 19/82 (2013.01); D21H 27/30 (2013.01); B65D 2205/00 (2013.01);
Abstract
There is provided a multilayered paper material for use in a valve sack for a hydraulic binder, comprising a paper layer, such as a Kraft paper layer, provided on at least one side with a pre-coating layer and a moisture barrier coating layer, wherein the pre-coating layer comprises inorganic filler and binder in a dry weight ratio of between 4:1 and 20:1.