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:
Dec. 22, 1992
Filed:
Sep. 16, 1991
Applicant:
Inventor:
Gunter Heinrich, Gernsbach, DE;
Assignee:
Unicon Papier und Kanststoffhandel sgesellschaft mbH, Gernsbach, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162129 ; 162130 ; 1621575 ; 162149 ; 162148 ;
Abstract
The tea bag paper comprises a first phase of natural fibers in a weight percentage of from 60% to 85%, and a second phase of heat-sealable synthetic fibers with the remainder of the weight percentage of from 15% to 40%. The second phase penetrates the first phase in such a way that both sides of the paper are adapted to be heat-sealed, with the unit area weight of the paper being between 10 and 15 g/m.sup.2. The tea bag paper exhibits enhanced tea diffusion, and may be processed on special high-speed automatic tea packing machines, because it is heat-sealable on either side thereof.