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Technical Information Sheet

3M

#7331, Gamma Stable Loop Fastener with Adhesive

Effective Date: November 2010

Supersedes all previous information sheets

Product Description:

3M #7331 is a gamma-stable nylon loop fastener laminated to a high tack, synthetic rubber-

based adhesive designed for medical construction and stick-to-skin applications. The

fastener tape is currently supplied on a two-side siliconized, paper release liner with basis

weight of 54 pounds.

Features and Benefits:

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Aggressive Adhesion to Films & Nonwovens

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Thin and Conformable

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Medical Device Construction & Closures

-

No Natural Rubber Latex

-

Approved for Stick-to-skin Applications

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Designed for Disposables

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EtO & Gamma Sterilization Compatible

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For use with #7332 or #7333 Hook

Composition:

Tape Thickness, no liner

14 mils (0.36 mm) typical

Loop Closure

Nylon knitted loop laminated to a clear polyethylene

film base

Adhesive, Double-coated Tape

Synthetic rubber system, 3M Proprietary, designed

for medical use

Internal Adhesive Carrier

1 mil (0.025 mm) Polyethylene

Release Liner

3.2 mil (0.08 mm) 54 lb. Bleached Kraft Paper,

2-side silicone-coated

Typical Properties

Dynamic Shear Closure, Average² 210 oz/0.5 inch

135 Degree Closure Peel, Aver.²

~8 oz/inch width (~230 grams/25 mm width)

Adhesion to LDPE, 180 Degree

Peel

36 oz/inch width (1.0 kg/25 mm width)

Liner Release, Maximum

40 gm/inch width (40 gm/25 mm width)

Roll Dimensions:

Roll Width, Minimum

Maximum

0.5 inches (~12.5 mm)

28 inches (71 cm)

Roll Length, Maximum

150 yds (137 m)

Storage Conditions:

This product as supplied in original packaging, will maintain stated test properties for a

humidity between 40-60 percent.

Please see reverse side for important product, safety and warranty information.