Filter Element Capsule Placement via Sheet Separation
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Solution Overview
Problem
Existing methods for creating filter elements with capsules from sheet filtering materials like paper or non-woven materials face challenges in capsule placement and homogeneity, particularly when integrating capsules into cellulose acetate tow-based filters.
Innovation Solution
A method involving the longitudinal advancement and separation of multiple sheets of filtering material to form a partially gathered rod with a recess, allowing for improved capsule positioning and homogeneity, using a separator and gathering chamber to maintain alignment and facilitate capsule insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If capsules are inserted into filter elements formed from sheet filtering material, then capsule placement and filtering material homogeneity are improved, but the manufacturing process becomes more challenging and complex
Solution Approach 1:
The filter element manufacturing process is divided into distinct stages: forming the rod from sheet material, creating a recess in the rod, inserting the capsule into the recess, and then completing the filter element formation. This segmentation allows precise capsule placement at the recess location without requiring complex integrated systems.
Solution Approach 2:
A recess is formed in the rod of filtering material before capsule insertion. This preliminary action creates a pre-positioned receptacle that guides and secures the capsule during insertion, ensuring precise placement without requiring complex positioning mechanisms during the actual capsule insertion step.
2Manufacturing precision
If multiple sheets of filtering material are used to form the filter element, then homogeneity is improved, but the process of integrating capsules becomes more difficult
Solution Approach 1:
Multiple sheets of filtering material are gathered and combined to form a unified rod structure with a recess. This merging creates a homogeneous filtering material structure that still accommodates capsule insertion by providing a pre-formed recess that guides the capsule into the correct position within the multi-sheet assembly.
3Manufacturing precision
If the recess is formed in the rod before capsule insertion, then capsule positioning is improved, but the manufacturing process requires additional steps
Solution Approach 1:
The recess is formed in the rod as a preliminary step before capsule insertion. This pre-formed recess acts as a template or guide that automatically positions the capsule correctly during insertion, improving positioning accuracy without requiring complex real-time adjustment mechanisms during the capsule insertion step itself.
Data Source
AI summary
There is disclosed a method for making a filter element comprising the steps of: advancing two or more sheets of filtering material in a longitudinal direction; separating the two or more sheets of longitudinally advancing filtering material; gathering the separated sheets of longitudinally advancing filtering material to form a partially gathered rod of filtering material having a longitudinally extending recess; inserting an additive release vessel into the longitudinally extending recess; gathering the filtering material around the additive release vessel to close the recess and thereby form a rod comprising a longitudinally extending core of filtering material and one or more additive release vessels.