| 摘要 |
<p>PCT No. PCT/GB96/01839 Sec. 371 Date Apr. 28, 1998 Sec. 102(e) Date Apr. 28, 1998 PCT Filed Jul. 29, 1996 PCT Pub. No. WO97/04956 PCT Pub. Date Feb. 13, 1997A fibrous, porous web material of the non-heat seal tissue having a basis weight of 9-18 gm-2 and comprises a first layer and a second layer juxtaposed thereto wherein the second layer. The first layer comprising vegetable fibers and a second layer comprising hardwood fibers, the second layer has a smaller pore size than the first layer. The paper is useful for producing beverage infusion bags (e.g. teabags) from which there is minimal passage of fine particles from the bags into their packaging.</p> |
