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SELF-ADHESIVE ACOUSTIC AND SEALING PATCH 4420

SELF-ADHESIVE ACOUSTIC AND SEALING PATCH

A pressure-sensitive elastomeric-based adhesive patch that combines excellent adhesion, sealing and noise barrier properties.
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Business Hours (EST) 8:00 a.m.-5:30 p.m.

Except for Sat, Sun, and Holidays

Features

  • Excellent adhesion to many substrates
  • Effective noise barrier patch

Structure

Properties

 

COLOR

Black

FACING

Permanent PE laminate, parchment paper, or removable release liner

SOLID CONTENT

95% minimum by weight

SHELF LIFE

Minimum 3 months @ 35°C

SPECIFIC GRAVITY

1.41 typical

HARDNESS

(ASTM D-5)

6.5 - 9.0 mm

ACOUSTIC PERFORMANCE

The noise reduction is a function of material mass per unit area. Material thickness should be set to provide desired sound transmission loss. Patches at 2 mm thick are widely used over sheet metal holes.

ADHESION CHARACTERISTICS

When subjected to a 90° peel at a rate of 300 mm/min on a

25 mm wide test specimen, the material has strength

>56.4 N (22.6 N/cm) after the following:

5 minute dwell

2 weeks

@ 70°C

2 weeks

@ 100% RH & 37.8°C

3 week environmental cycle

REPOSITIONABILITY After Bake

The material can be repositioned shortly after being applied (1-2 minutes)

and still meet above adhesion characteristics.

ELEVATED TEMPERATURE

Withstands automotive bake cycles and maintains properties.

DEAD LOAD

The material will show no evidence of sagging or pulling away from panel when a 34 g weight is attached to a 25 x 150 mm strip with the assembly hanging vertically for 24 hours.

MOLD RESISTANCE

No odor or mold development was evident after 2 weeks at

100% RH & 37.8°C.

FLEXIBILITY/

CONFORMABILITY

The material will remain flexible and conformable at temperatures

as low as -30°C.

FLAMMABILITY

Meets FMVSS 302, self-extinguishing

Contact Us

Customer Support Center

Business Hours (EST) 8:00 a.m.-5:30 p.m.(Except for Sat, Sun, and Holidays)

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