公开(公告)号：US4488563A

公开(公告)日：1984-12-18

申请号：US373153

申请日：1982-04-29

申请人： Kazuhiko Morifuji ,  Hirohumi Okura ,  Takashi Sakai

发明人： Kazuhiko Morifuji ,  Hirohumi Okura ,  Takashi Sakai

IPC分类号： A24D3/04

CPC分类号： A24D3/043

摘要： A filter plug having a dual structure comprising filter element A made from a crimped long filter tow in a form of a plug, filter element B, joined to said A, prepared by wrapping a core material consisting of a long fiber tow in a sheet-formed product having grooves which is formed from a material having an air permeability of 8 liters/minute or less and an air permeable wrapping paper and/or a wrapping paper with perforated openings on its periphery which is wrapping therein said filter elements A and B so that the outer grooves parts of the sheet-formed product pass through in the longer direction of the filter plug.

摘要翻译： 一种具有双重结构的过滤塞，包括过滤元件A，过滤元件A由栓塞形式的卷曲长过滤器丝束制成，过滤元件B连接到所述A，通过将由长纤维丝束组成的芯材包裹在片材中， 形成的产品具有由透气度为8升/分钟以下的材料形成的凹槽和透气性包装纸和/或其周边上具有穿孔的包装纸，其中包裹有所述过滤元件A和B， 片状产品的外槽部分在过滤嘴的长度方向上通过。