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01Backup tape processing technologies

Removable PET base backup tape with acrylic pressure sensitive adhesive (PSA) which has low tack strength. This backup tape is suitable for support film of CCL for COF and protection film.

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backup tape

Example of composition

Layer Material Standard thickness
Base film PET 50µm
Pressure sensitive
adhesive(PSA)
Low tack PSA 8µm
Protection film PET 25µm

Properties

Heat treatment condition Adhesion(N/cm) Adhesive residue
Polyimide Glass Polyimide Glass
At room temp 0.02 0.02 none none
150℃×2hours 0.06 - none -
100℃×1hours - 0.03 - none

Feature

Backup tape which shows good removablity at high temperature (150℃) suitable for backing and masking purposes.

02Heat resistant backup tape processing technologies

backup tape

Polyimide base heat resistant backup tape suitable for backing and masking purposes at 200℃ or higher.

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Example of composition

Layer Material Standard thickness
Base film Polyimide 50µm
Pressure sensitive
adhesive (PSA)
Acrylic PSA 10µm
Protection film PET 25µm

Properties

Heat treatment condition Adhesion(N/cm) Adhesive residue
Polyimide Glass Polyimide Glass
At room temp 0.02 0.02 none none
160℃×3hours 0.13 - none -
250℃×2min - 0.02 - none

Feature

backup tape which shows good removablity at high temperature suitable for backing and masking purposes.