초록 ▼

A filter for fluids includes a pair of layers or multiple layers or pairsof material joined together to form a laminate having a fluid contacting surface. A plurality of spaced pockets is formed between the layers of material in the contacting surface. The layers of material are fluid permeable at t

A filter for fluids includes a pair of layers or multiple layers or pairsof material joined together to form a laminate having a fluid contacting surface. A plurality of spaced pockets is formed between the layers of material in the contacting surface. The layers of material are fluid permeable at the pockets whereby fluid may flow through the laminate at the pockets. The fluid contacting surface is fluid impermeable except for the pockets to require the fluid passing through the laminate to be confined to flowing through the pockets. Filter members are in the pockets for removing any contaminants from the fluid. Alternatively, additive materials such as powdered cream or sugar in the pockets dissolve in the fluid passing through the pockets to enhance the fluid.

대표청구항 ▼

[ What is claimed is:] [1.] A process for incorporating an additive in a fluid for enhancing the fluid comprising the steps of providing a fluid treating member in the form of upstream and downstream layers of material joined together to form a laminate having a fluid contacting .[.surface.]. .Iadd.

[ What is claimed is:] [1.] A process for incorporating an additive in a fluid for enhancing the fluid comprising the steps of providing a fluid treating member in the form of upstream and downstream layers of material joined together to form a laminate having a fluid contacting .[.surface.]. .Iadd.region .Iaddend.with a plurality of spaced pockets between the layers of the material in the fluid contacting .[.surface.]. .Iadd.region .Iaddend.and with the layers of material being fluid permeable at the pockets and with the upstream layer being liquid impermeable except at the pockets, mounting the treating member in a fluid applicating station, the permeability and impermeability characteristics of the upstream layer being inherent characteristics of the material used for the upstream layer whereby the permeability portions are self-permeable without requiring any piercing and alterations of the upstream layer to create fluid permeability, the upstream layer having its permeability and impermeability characteristics prior to mounting the treating member in the fluid applications station with the characteristics remaining unchanged both before and after the treating member is mounted in the fluid applicating station, the permeability and impermeability characteristics requiring the fluid to pass through the laminate by being confined to flowing through the pockets and with dissolvable additive material in the pockets dissolving in response to the fluid passing through the members, mounting the treating member in the path of fluid flow at a location spaced upstream from the collection area of the path of flow, directing the fluid against the upstream layer of the fluid contacting .[.surface.]. .Iadd.region.Iaddend., flowing a portion of the fluid laterally at the liquid impermeable portion of the upstream layer, flowing the fluid through the pockets of the treating member, dissolving the additive material by the action of the fluid contacting the additive material in the pockets, and incorporating the dissolved material in the fluid which passes out of the pockets and through the treating member and then flows to the collection area.