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Anti-jamming PSA Cover Tape Module

IP.com Disclosure Number: IPCOM000168789D
Publication Date: 2008-Mar-24
Document File: 4 page(s) / 88K

Publishing Venue

The IP.com Prior Art Database

Abstract

3M 2668 High Shear PSA (Pressure Sensitive Adhesive) cover tape is used as part of the packaging material system for electronic components in the semiconductor industry. The product is invented by 3M with a special design feature to provide extra strength and performance in the total sealing capability in the semiconductor industry. This design feature, in fact helps to eliminate the traditional problems that industry players observe, e.g., tearing of cover tape during pick and place, delaminating of cover tape, etc. Due to the unique design of cover tape, adhesive was applied at both edged sides of the cover tape to substitute the conventional heat activated (HAA) cover tape which uses heat to activate adhesion during the cover tape sealing process to embossed carrier tape. A general application concern to the pick and place user was that they observed adhesive residue of the cover tape left behind/built up on the equipment during the cover tape removal process. Users consider the adhesive/glue build-up as an inconvenience and unfriendly to the maintenance of the pick and place operation. Schematic of a typical electronic tape and reel feeder design used on a pick and place machine Component Reel Standard Size 7.0 inch diameter 13.0 inch diameter Carrier Sprocket index wheel To PCB Robot pick-up head carrier guide cover plate PSA Cover tape Adhesive build-up location Jamming happen when PSA cover adhesive stuck at equipment trash box Page 2 of 4 Original Panasonic feeder 0CM 402 With only 2 rollers Page 3 of 4 New design with a 5-roller anti jamming PSA cover tape module Cover tape Carrier tape Set of tensioned enhancement, prefolding and pre wetout rollers Set of folding and wet out roller Mechanism of 5-roller design module Page 4 of 4 With the tensioned enhancement feature set, the cover tape can be folded well. The advantages of the design achieves "mature-folding" on 3M 2668 PSA high shear PSA cover tape, a cover tape which is less sticky as compared to its earlier generation. The trashed cover tape tail was found in a "zig-zag" pattern and without adhesive residue. Verification studies performed on a full reel showed no jamming. Using the Panasonic Feeder CM 402, the folded cover tape tail came out automatically when the trash cover was opened, which indicated that there was no more adhesive transfer in the wall of the feeder trash box.

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Page 1 of 4

Anti-jamming PSA Cover Tape Module

Authors: Tze Lung Chong, Kam Poi Chia

3M 2668 High Shear PSA (Pressure Sensitive Adhesive) cover tape is used as part of the packaging material system for electronic components in the semiconductor industry. The product is invented by 3M with a special design feature to provide extra strength and performance in the total sealing capability in the semiconductor industry. This design feature, in fact helps to eliminate the traditional problems that industry players observe, e.g., tearing of cover tape during pick and place, delaminating of cover tape, etc.

Due to the unique design of cover tape, adhesive was applied at both edged sides of the cover tape to substitute the conventional heat activated (HAA) cover tape which uses heat to activate adhesion during the cover tape sealing process to embossed carrier tape. A general application concern to the pick and place user was that they observed adhesive residue of the cover tape left behind/built up on the equipment during the cover tape removal process. Users consider the adhesive/glue build-up as an inconvenience and unfriendly to the maintenance of the pick and place operation.

Adhesive build-up location

Robot pick-up head

carrier guide cover plate

PSA Cover tape

Carrier

Sprocket index wheel

To PCB

Jamming happen when PSA cover adhesive stuck at equipment trash...