Primerless Silicone PSA

X-40-3455I

X-40-3455I is a silicone pressure sensitive adhesive which has an excellent anchorage to substrates.
It will make it possible to reduce the cost and process of coating the primer.

Features

  • Addition cure silicone PSA
  • Excellent anchorage which makes primer less
  • Excellent heat resistance, adhesion, tack, holding power
  • BTX free (Diluted with Isoparaffin)

Applications

  • Heat resistance tape, masking tape
  • Career tape for electronic component
  • Insulating tape

Conventional Silicone PSA Coating Process

Primerless Silicone PSA Coating Process

General Properties

Item Product name KR-3700 X-40-3455I X-40-3455I
X-92-284I
Adhesion (Room temperature)
N/25mm
 9.1 8.3 7.2
Probe tack
N/5mmφ
 8.1 7.9 7.5
Anchorage Pl film Poor Good Good
PET film Poor Good Good
Holding power
mm
 250°C x 1 h 0.01 0.01 0.02
280°C x 1 h Drop 0.03 0.03
Adhesive residue 220°C x 1 h + + +
250°C x 1 h - ± to + +
280°C x 1 h - - +
300°C x 1 h - - ±
(Not specified values)

[Test Conditions]

Formulation:
KR-3700 / CAT-PL-50T = 100 / 0.5
X-40-3455I / CAT-PL-56 = 100 / 0.5
X-40-3455I / X-92-284I / CAT-PL-56 = 100 / 20 / 1.0
Backing:
PI 25 μm (adhesive properties)
PET 25 μm (anchorage)
PSA thickness:
30 μm (dry)
Curing condition:
130°C x 1 min
Anchorage:
Interfacial peeling from backing
Holding power:
25 x 25 mm, 1 kg
Adhesive residue:
+ No adhesive residue
± Slight residue
- Residue
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