AIR-FILTER FILTER MATERIAL AND METHOD FOR PRODUCING FILTER MATERIAL

    公开(公告)号:EP4494731A1

    公开(公告)日:2025-01-22

    申请号:EP22932167.4

    申请日:2022-03-18

    Abstract: An object of the present disclosure is to provide an air-filter filter material in which filter performance is improved and good water repellency is obtained by using polyvinyl alcohol, a cationic surfactant, and a water repellent and equipping pores of fluid permeation paths of a support with a mesh-like network of polyvinyl alcohol. A method for producing an air-filter filter material according to the present disclosure includes: an adhesion step of adhering a polyvinyl alcohol aqueous solution to a support, having fluid permeability, and bringing the support into a wet state; and a drying step of drying the polyvinyl alcohol aqueous solution adhered to the support in a wet state at 140°C or higher; in the method, the polyvinyl alcohol aqueous solution contains a cationic surfactant and a water repellent and is free of binder resins other than polyvinyl alcohol, and pores, serving as fluid permeation paths, of the support is, by the polyvinyl alcohol aqueous solution being dried after completion of the drying step, equipped with a mesh-like network of polyvinyl alcohol.

    METHOD FOR USING SUPER/SUBCRITICAL FLUID TO REMOVE VOLATILE COMPOUNDS FROM FOAM

    公开(公告)号:EP3878899A1

    公开(公告)日:2021-09-15

    申请号:EP19884606.5

    申请日:2019-03-08

    Abstract: Disclosed is a method of removing volatile organic compounds from sponges by using supercritical/subcritical fluid. The method includes the following steps: placing the sponge block to be treated in the extraction kettle; feeding the critical flow medium into the extraction kettle; performing extraction under the supercritical or subcritical conditions of the critical flow medium; releasing pressure to normal pressure after extraction; and separating to obtain devolatilized sponge. The volatile removal device used in the disclosure is a supercritical extraction equipment, which can adopt static extraction or dynamic extraction or a combination of the two. CO2releases pressure in the separating kettle after contacting the sponge to be treated in the device for mass transfer for a certain period, when the static extraction devolatilization is carried out.

    DICHTBAND
    10.
    发明公开
    DICHTBAND 审中-公开
    封箱胶带

    公开(公告)号:EP3260617A1

    公开(公告)日:2017-12-27

    申请号:EP17176916.9

    申请日:2017-06-20

    Abstract: Dichtband aus einem weichen Polyurethan-Schaumstoff, welches zur verzögerten Rückstellung wenigstens teilweise und bevorzugt vollständig mit einem Imprägnatmittel imprägniert ist, wobei das Imprägnatmittel eine Acrylatdispersion aufweist,
    dadurch gekennzeichnet, dass
    der imprägnierte trockene Schaumstoff ein Raumgewicht aufweist, welches größer ist als 60Kg/m 3 und das Dichtband mit einem vorgegebenen Komprimierungsgrad auf einer Rolle aufgewickelt ist und dieser Komprimierungsgrad geringer ist als 15% der Schaumausgangshöhe und/oder höher als 5% der Schaumausgangshöhe.

    Abstract translation: 密封由软质聚氨酯泡沫塑料,其至少部分地和优选完全浸渍用于与Imprägnatmittel,其中所述Imprägnatmittel包含丙烯酸酯的延迟恢复的磁带,其特征在于浸渍过的干泡沫的密度比60公斤/立方米和更大 将密封带卷绕在辊上达到预定的压缩程度,并且压缩程度小于泡沫体出口高度的15%和/或大于泡沫体出口高度的5%。

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