发明名称 |
Process of producing porous web materials used for making infusion packages for brewing beverages and the web materials thus produced |
摘要 |
A porous web material for making infusion packages having enhanced mechanical seam integrity is obtained by treating the entire fibrous web material with an aqueous emulsion of a hydrophobic agent selected from the group consisting of high molecular weight cross-linked acrylic polymers, silicones, fluorohydrocarbons, paraffins, alkyl ketene dimers and stearylated materials. The hydrophobic agent, which may also act as a strength imparting binder, is preferably applied as a saturating treatment. The treated web is subsequently dried to insolublize the agent on the web. The web exhibits no appreciable water climb when measured using water at a temperature of about 100 DEG C. and no substantial loss of infusion characteristics while providing less than 10 percent failure in a mechanical seam therein when exposed to boiling water.
|
申请公布号 |
US5431997(A) |
申请公布日期 |
1995.07.11 |
申请号 |
US19930086673 |
申请日期 |
1993.07.01 |
申请人 |
THE DEXTER CORPORATION |
发明人 |
SCOTT, PETER C.;VIAZMENSKY, HELEN;WOLCHECK, JR., NICHOLAS |
分类号 |
B65D81/00;B65D85/804;D21H27/08;(IPC1-7):B32B27/00 |
主分类号 |
B65D81/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|