Bringing Acoustics Home

Loaded Limp Mass Barrier Material

Model KNM

Description

Kinetics Model KNM Loaded Limp Mass Barrier Materials are used for enclosing noise sources, either draped around equipment, suspended between equipment and quiet areas, or lagged to the equipment casing. KNM Vinyl Barrier Materials can be used effectively to lag piping systems, reducing valves, etc., and are highly effective as crosstalk barriers and septums. Our vinyl barrier materials are available in 1/2 psf to 1 psf (2.5 to 4.9 kg/m2 ) surface weight, in 54" wide x 20 yard (1372 mm x 18.2 m) rolls, with acoustical ratings of STC-21 to STC-26.

Application

Physical Properties

Product Weight
Lbs./Sq. Ft.
(kg/m2)
Tensile Strength
Lbs./In.
(kg/mm)
Tear Strength
Lbs./In.
(kg/mm)
Flammability
Flameout,
Sec.
Afterglow,
Sec.
Char Length,
In. (mm)
KNM-50C 0.50 (2.5) 201 (3.6) 70 (1.2) 3 0 0.5 (13)
KNM-50B 0.50 (2.5) 55 (1.0) 10 (0.2) 3 0 1.7 (43)
KNM-50RB 0.50 (2.5) 300 (5.3) 100 (1.8) 3 0 0.2 (5)
KNM-100C 1.00 (4.9) 400 (7.1) 140 (2.5) 3 0 0.5 (13)
KNM-100B 1.00 (4.9) 105 (1.9) 20 (0.4) 0 0 0.2 (5)
KNM-100RB 1.00 (4.9) 300 (5.3) 100 (1.8) 0 0 0.2 (5)

Sound Transmission Loss, dB

Product Weight
Sq. Ft. (cm2)
125 250 500 1000 2000 4000 STC
KNM-50C 0.50 (464) 11 12 15 20 26 32 21
KNM-50B 0.50 (464) 11 12 15 20 26 32 21
KNM-50RB 0.50 (464) 11 12 15 20 26 32 21
KNM-100C 1.00 (929) 15 19 21 28 33 37 26
KNM-100B 1.00 (929) 13 17 21 28 33 40 26
KNM-100RB 1.00 (929) 15 19 21 28 33 37 26

Product Descriptions

KNM-50C 1/2 PSF (2.5 kg/m2)
Kinetics Clearview barrier material, nonloaded and nonreinforced. Clearview is very limp, tough and water clear. Available in 48" x 20 yard (1219 mm x 18.2 m) rolls.

KNM-100C 1 PSF (4.9 kg/m2)
Kinetics Clearview barrier material, nonloaded and nonreinforced. Clearview is very limp, tough and water clear. Available in 48" x 20 yard (1219 mm x 18.2 m) rolls.

KNM-50B 1/2 PSF (2.5 kg/m2)
Kinetics limp barrier material, unreinforced and loaded with barium sulphate. Available in black color in 54" x 20 yard (1372 mm x 18.2 m) rolls.

KNM-100B 1 PSF (4.9 kg/m2)
Kinetics limp barrier material, unreinforced and loaded with barium sulphate. Available in black color in 54" x 20 yard (1372 mm x 18.2 m) rolls.

KNM-50RB 1/2 PSF (2.5 kg/m2)
Kinetics limp barrier material, reinforced with a fiberglass screen, and loaded with barium sulphate. Available in light tan color in 54" x 20 yard (1372 mm x 18.2 m) rolls.

KNM-100RB 1 PSF (4.9 kg/m2)
Kinetics limp barrier material, reinforced with a fiberglass screen, and loaded with barium sulphate. Available in grey color in 54" x 20 yard (1372 mm x 18.2 m) rolls.

Specification

Barrier material shall meet the sound transmission loss and physical properties performance and the flammability standards listed in this brochure.

Barrier material shall have a minimum continuous operating temperature range from -40F to 180F (-40C to 82.2C), be resistant to water, oils, weak acids, alkalies, and fungi, and have excellent weather resistance.

Barrier material to be Model KNM by Kinetics Noise Control, Inc.

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