公开(公告)号：US4289580A

公开(公告)日：1981-09-15

申请号：US93441

申请日：1979-11-13

申请人： Colin Elston ,  Herbert A. Hoffman ,  H. Joseph Murphy

发明人： Colin Elston ,  Herbert A. Hoffman ,  H. Joseph Murphy

IPC分类号： D21F11/04 ,  D04H1/04 ,  D04H1/54 ,  D21H13/14 ,  D21H21/24 ,  D21H23/28 ,  D21H23/50 ,  D21H27/02 ,  D21H27/08 ,  D21H5/02

CPC分类号： D21H27/08 ,  D21H13/14 ,  D21H21/24 ,  D21H23/28 ,  D21H23/50 ,  D21H27/02

摘要： Improved infusion web material for tea bags and the like is provided by using synthetic pulp in the heat seal phase and forming therein an array of a large number of small discrete craters. These craters, which exhibit an average planar area of at least about 1.times.10.sup.-3 square centimeters, are formed prior to drying the initially formed multi-phase material by directing a low impact mist-like liquid spray onto the heat seal phase. The droplets from the spray displace the fibers to form the shallow craters and, at times, expose portions of the underlying non-heat seal fiber phase. The small craters are present throughout the heat seal phase at a concentration of at least about 40 per square centimeter and occupy about 10-75 percent of the total exposed surface area of the heat seal fiber phase of the material. The web also is treated with a surfactant.

摘要翻译： 通过在热封相中使用合成纸浆形成用于茶袋等的改进的输液网材料，并且在其中形成大量小的离散凹坑的阵列。 在通过将低冲击雾状液体喷雾引导到热封相之前，在干燥初始形成的多相材料之前，形成具有至少约1×10 -3平方厘米的平均平面面积的这些凹坑。 来自喷雾的液滴使纤维形成浅凹坑，有时暴露下面的非热封纤维相的部分。 小的空穴在整个热封阶段以至少约40个/厘米2厘米的浓度存在，并且占该材料的热封纤维相的总暴露表面积的约10-75％。 纤维网也用表面活性剂处理。