发明授权
- 专利标题: Filter plug
- 专利标题(中): 过滤塞
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申请号: US373153申请日: 1982-04-29
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公开(公告)号: US4488563A公开(公告)日: 1984-12-18
- 发明人: Kazuhiko Morifuji , Hirohumi Okura , Takashi Sakai
- 申请人: Kazuhiko Morifuji , Hirohumi Okura , Takashi Sakai
- 申请人地址: JPX Tokyo JPX Tokyo
- 专利权人: Mitsubishi Acetate Co., Ltd.,Mitsubishi Rayon Co., Ltd.
- 当前专利权人: Mitsubishi Acetate Co., Ltd.,Mitsubishi Rayon Co., Ltd.
- 当前专利权人地址: JPX Tokyo JPX Tokyo
- 主分类号: A24D3/04
- IPC分类号: A24D3/04
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.