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    • 87. 发明授权
    • Press felt for papermaking
    • 新闻感到造纸
    • US08252147B2
    • 2012-08-28
    • US12593689
    • 2007-12-27
    • Takashi Ohuchi
    • Takashi Ohuchi
    • D21F7/08B32B5/02B32B5/06
    • D21F7/083Y10T442/3732Y10T442/3764
    • A press felt 10 comprises a base body 30 and a batt layer having a wet paper side layer 20. The wet paper web side layer 20 has a base body side batt layer 22, upright fiber bundles 50 are formed in the basebody side batt layer 22. After needle punching a core-in-sheath fiber 41, the upright fiber bundles are formed by melting the sheath member of the core-in-sheath fibers 41 into a pillar form melted by heat treatment. As a result, the base body side batt layer 22 is made dense and blocks water within the press side batt layer 23 from moving to the wet paper web side, thereby preventing rewetting; moreover, the invention successfully enhances resistance to abrasion and compression fatigue of the felt 10 by the upright fiber bundles 50 fusion-bonded into a pillar form.
    • 压榨毛毯10包括基体30和具有湿纸侧层20的毛层。湿纸幅侧层20具有基体侧毛层22,在基体侧毛层22中形成立体纤维束50 在对皮芯纤维41进行针刺后,通过将芯鞘型纤维41的护套构件熔化成通过热处理熔化的柱状而形成直立纤维束。 结果,基体侧毛层22变得致密,并阻止压制侧毛层23内的水移动到湿纸幅侧,从而防止再润湿; 此外,本发明通过熔融结合成柱状的直立纤维束50成功地提高了毛毡10的耐磨性和压缩疲劳性。