Air Permeable Filter Sharpened End Portion for Carrier Tape Peeling
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Solution Overview
Problem
Existing systems face difficulties in peeling air permeable filters with low rigidity from a carrier tape without increasing tension, leading to pick-up errors and potential deformation of the filters.
Innovation Solution
The air permeable filters are shaped with an end portion sharpened at an angle of 90 degrees or more, reducing the holding strength of the carrier tape at the tip, allowing for successful peeling without increased tension by aligning the direction of reduced holding strength with the peeling direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tension applied to the carrier tape is increased to prevent filters from turning back during peeling, then the peeling reliability is improved, but the device complexity increases and the filters may be deformed
Solution Approach 1:
The patent applies local quality by creating a specific region at the end portion of the filter where the adhesive strength is reduced. This localized modification allows the filter to be peeled easily at the end portion without affecting the holding strength at other regions, eliminating the need for complex tension control systems while preventing filter deformation.
Solution Approach 2:
The patent segments the adhesive bonding into two distinct regions: a first region with normal adhesive strength for reliable holding, and a second region at the end portion with reduced adhesive strength for easy peeling. This segmentation allows differential adhesive properties within the same filter-carrier tape interface, resolving the contradiction between holding reliability and peeling ease.
2Reliability
If the tension applied to the carrier tape is increased to prevent filters from turning back during peeling, then the peeling reliability is improved, but the filters may be deformed
Solution Approach 1:
The patent applies local quality by creating a specific region at the end portion of the filter where the adhesive strength is reduced. This localized modification allows the filter to be peeled easily at the end portion without affecting the holding strength at other regions, eliminating the need for complex tension control systems while preventing filter deformation.
3Ease of manufacture
If conventional circular filters are used on the carrier tape, then the manufacturing process is simple, but the filters are difficult to peel without turning back
Solution Approach 1:
The patent applies asymmetry by making the end portion of the filter different from the rest of the filter area. The end portion has reduced adhesive strength while the main body maintains normal adhesive strength. This asymmetric adhesive distribution enables easy peeling at the end portion without affecting the holding of the filter during handling and mounting operations.
4Adaptability or versatility
If low rigidity filters are used to achieve better filtration, then the filtration performance is improved, but the peeling process becomes difficult without causing pick-up errors
Solution Approach 1:
The patent applies local quality by creating a specific region at the end portion of the filter where the adhesive strength is reduced. This localized modification allows the filter to be peeled easily at the end portion without affecting the holding strength at other regions, eliminating the need for complex tension control systems while preventing filter deformation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables efficient peeling of air permeable filters from the carrier tape at lower tensions, enhancing workability and preventing errors, especially for filters with low rigidity, such as PTFE porous membranes.
Implementation Method 1
a plurality of air permeable filters held with adhesive strength on the carrier tape
Data Source
Figure 1A~1C
Figure 2A~2C
Figure 3A~4
AI summary
The present invention is intended to provide a filter-holding object that allow air permeable filters to be peeled from a carrier tape in a satisfactory manner without increasing a tension applied to the carrier tape. A filter-holding object (1) includes: a carrier tape (2) extending in a specified direction; and a plurality of air permeable filters (3) held on the carrier tape (2) so as to be arranged in the specified direction. The air permeable filters (3) are shaped so that an end portion of each of the air permeable filters (3) on one side of the specified direction is sharpened toward the one side of the specified direction at an angle of 90 degrees or more. Preferably, the end portion of each of the air permeable filters (3) on the one side of the specified direction is sharpened at an angle of 135 degrees or less.