Method of producing a multilayer filter medium and a filter medium produced in accordance with this method

The invention relates to a method of producing a multilayer filter medium, including at least the production steps of providing a woven fabric layer (12) having passage points (24) for fluid, providing a nonwoven layer of a spunbonded nonwoven (18) and having additional passage points (28) for fluid...

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Bibliographic Details
Main Authors Winter, Martin, Schlichter, Bernhard
Format Patent
LanguageEnglish
Published 17.09.2024
Subjects
LOOMS
METHODS OF WEAVING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TEXTILES
TRANSPORTING
WEAVING
WOVEN FABRICS
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Summary:The invention relates to a method of producing a multilayer filter medium, including at least the production steps of providing a woven fabric layer (12) having passage points (24) for fluid, providing a nonwoven layer of a spunbonded nonwoven (18) and having additional passage points (28) for fluid, and joining the two superimposed layers (12, 18) along contact points (30) by melting the nonwoven layer (18) in such a way that while the additional passage points (28) enlarge, the molten spunbonded nonwoven material flows at least in part to the contact points (30) and then cumulatively curs there to produce firm connection points between the two layers (12, 18).
Bibliography:Application Number: US202017617409