초록 ▼

A process for the manufacture of hermetically sealed filter units and a product made thereby. The process comprises aligning a porous filter element between two housing parts and a thermoplastic skirt that overlaps the edge of at least one housing part to shield the edge of the filter element dispos

A process for the manufacture of hermetically sealed filter units and a product made thereby. The process comprises aligning a porous filter element between two housing parts and a thermoplastic skirt that overlaps the edge of at least one housing part to shield the edge of the filter element disposed adjacent to the skirt, pressing the housing parts together and then injection molding a thermoplastic overmold band around the outer portions of the housing parts to form a hermetic seal at the edge of the filter element.

대표청구항 ▼

A method for hermetically sealing a filter element within a housing, comprising the steps of: (a) aligning a filter element between a first and a second housing member defining a filter cavity; (b) disposing a thermoplastic skirt adjacent to a peripheral edge of the second housing member to surround

A method for hermetically sealing a filter element within a housing, comprising the steps of: (a) aligning a filter element between a first and a second housing member defining a filter cavity; (b) disposing a thermoplastic skirt adjacent to a peripheral edge of the second housing member to surround an entire peripheral edge of the filter element located between the first and second housing members; (c) applying pressure to the first and second housing members; and (d) injection molding a thermoplastic overmold over the skirt and a periphery of the housing members, wherein a temperature and pressure of the injection molded overmold causes the skirt to melt and mix with the overmold to infuse the edge of the filter element.