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

Active Publication Date: 2010-01-27
HYDAC FILTERTECHNIK GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As has been shown, such joining methods are time-consuming, resulting in correspondingly high production costs

Method used

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

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Embodiment Construction

[0018] The invention will be explained below on the basis of an embodiment in which the formation of the laser-impermeable barrier layer is realized in that the welding foil described in detail below is used as an insert component in place prior to the welding process.

[0019] figure 1 with 2 A first exemplary embodiment of a filter element produced according to the method according to the invention is shown, which is designated as a whole by 1 . The main component is the filter medium, which is formed by a filter mat designed as an annular body 3 , which surrounds an inner filter cavity 7 in the shape of a hollow cylinder concentrically to the longitudinal axis 5 . The filter cavity is closed at one end by a cover-side end cap 9 which is formed in one piece from polyamide and has a central hollow pin 11 which is closed at the inner end and which runs along the edge of the ring body 3 The inner side extends into the filter cavity 7 . At the opposite, bottom-side end, the f...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D29/11B01D29/21
CPCB29L2031/14B29C65/1616B29C66/54B29C65/1635B29C66/712B29C65/1412B29C2035/0822B29C65/1606B29C45/14778B29C65/168B29C65/1683B01D29/111B29C66/5344B29K2101/12B29K2077/00B01D29/21B29C66/12441B29C66/12469B29C66/542B29C66/5432B29C66/545B29C66/71B29C66/7392B29C66/73921B29K2067/00
Inventor G·加利菲H·梅斯
Owner HYDAC FILTERTECHNIK GMBH
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