Method for the production of a filter element and filter element produced according to said method

A technology of filter elements and filter media, which can be used in household components, separation methods, filtration and separation, etc., and can solve problems such as time-consuming and high manufacturing costs
CN101636212AActive Publication Date: 2010-01-27HYDAC FILTERTECHNIK GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HYDAC FILTERTECHNIK GMBH
Publication Date
2010-01-27

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Abstract

1. A method for the production of a filter element. 2. A method for the production of a filter element (1) comprising the steps: a) Providing a filter medium (3) surrounding an inner filter cavity (7) and comprising a heat-sealable material; b) Providing at least one end cap (9, 13) made of thermoplastic, laser-permeable material, forming a covering of the filter cavity (7) on at least one end; c) Forming a laser-impermeable barrier layer (31) between the end cap (9, 13) and the adjacent end of the filter medium (3) and d) Welding the end cap (9, 13) and filter medium (3) by irradiating laser-permeable material adjacent to the barrier layer (31) with laser energy such that, by heating the region adjacent to the barrier layer (31), a welding volume is provided as a joining element for the welded joint created by laser-transmission welding.
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Description

technical field

[0001] The present invention generally relates to the manufacture of filter elements, which are used in many technical fields for filtering fluids of different types, such as hydraulic fluids, lubricants, fuels and the like. Such a filter element is preferably constructed from metal-free parts for reasons of rational production, low weight, simple cleaning and recycling, wherein the filter medium surrounding the filter cavity forming the interior of the dirt side during filtration is treated The cleaning fluid flows through from the inside to the outside, and the filter cavity is closed at at least one end by an end cap which forms a jacket for the adjoining end of the filter medium. Background technique

[0002] Not only must the connection between the filter medium and the casing region on the associated end cap be formed fluid-tight, but a mechanically firm bond must also be produced in order to ensure the structural strength of the filter element. Compli...

Claims

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