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Model KC

Foam Composites

Description

Kinetics Composite Acoustical Materials are a group of limp, flexible, noise barrier materials laminated to Kinetics urethane absorption foam.

All products are available with or without pressuresensitive adhesive on the foam surface.

The composites are designed for attachment to surfaces of rigid enclosures to provide a Sound Transmission Class (STC) value which exceeds the performance of materials of the same mass if bonded directly to a surface.

Model KC-5-50 consists of 0.5 lbs./sq.ft. (2.5 kg/m2) loaded vinyl barrier bonded to 1/2" (13 mm) thick urethane absorption foam. Model KC-10-100 consists of 1.0 lbs./sq.ft. (4.9 kg/m2) bonded vinyl barrier bonded to 1" (25 mm) thick urethane absorption foam. Model KC-5-50/100 consists of 0.5 lbs./ sq.ft. (2.5 kg/m2) loaded vinyl barrier bonded to 1/2" (13 mm) thick urethane absorption foam on one side and to 1" (25 mm) thick urethane absorption foam on the other side.

Under normal circumstances, the foam surface on the single composite and the 1/2" (13 mm) foam surface on the double composite are attached to the enclosure.

Model KC Composites are easily cut with a utility knife, scissors, or die-cut into custom configurations.

Application

Model KC Composite Materials are recommended for direct attachment to noisy equipment casings. When applied to a radiating surface, the absorption foam is placed toward the surface to "decouple" the limp mass thus providing an increase in Sound Transmission Class (STC).

Kinetics Composites can be suspended in limited lengths as a barrier around noisy equipment with the absorption surface facing the noise source.

Typical applications include:

Optional Features

Performance Data

Absorption Characteristics

Model Frequency, Hz
125 250 500 1000 2000 4000 6000 NRC
KC-5-50 0.10 0.16 0.34 0.56 0.90 1.00 0.94 0.49
KC-10-100 0.14 0.30 0.68 0.91 0.94 0.93 0.98 0.73
KC-50-50/100 (1/2" (13 mm) foam side 0.10 0.16 0.34 0.56 0.90 1.00 0.94 0.49
KC-50-50/100 (1" (25 mm) foam side 0.14 0.30 0.68 0.91 0.94 0.93 0.98 0.73

Sound Transmission Loss (dB)

Model Frequency, Hz
125 250 500 1000 2000 4000 STC
Adhered to 1/4" (6 mm) Plywood
KC-5-50 11 22 35 54 52 51 33
KC-5-50/100 12 21 27 47 53 52 31
Adhered to 18 Ga. Steel
KC-5-50 17 25 40 53 54 53 38
KC-5-50/100 18 26 39 54 55 53 39
Free Hanging
KC-5-50 11 12 15 20 26 32 21
KC-10-100 15 19 21 28 33 37 27
KC-5-50/100 11 12 15 20 26 32 21

Availability

KC-5-50
0.5 lb./sq. ft. (2.5 kg/m2) loaded vinyl barrier bonded to a 1/2" (13 mm) thick urethane foam. 0.6" (15 mm) thick x 54" (1372 mm) wide x 25' (7.6 m) long roll.

KC-10-100
1.0 lb./sq. ft. (4.9 kg/m2) loaded vinyl barrier bonded to a 1" (25 mm) thick urethane foam. 1.1" (28 mm) thick x 54" (1372 mm) wide x 25' (7.6 m) long roll.

KC-5-50/100
0.5 lb./sq. ft. (2.5 kg/m2) loaded vinyl barrier bonded to a 1/2" (13 mm) and 1" (25 mm) thick urethane foam. 1.6" (41 mm) thick x 54" (1372 mm) wide x 25' (7.6 m) long roll.

Specifications

Noise Control Materials shall be a combination of limp, flexible, loaded vinyl noise barriers permanently factory-laminated to a polyester urethane absorption foam.

The limp mass barrier shall be barium sulphate loaded, unreinforced PVC material, nominally weighing 0.5 or 1.0 lbs./sq. ft. (2.5 or 4.9 kg/m2).

The bonded absorption or decoupling layer shall be 2 PCF (32 kg/m3) density, polyester urethane, flexible, acoustical foam having a Noise Reduction Coefficient (NRC) of 0.27 for 1/4" (6 mm), 0.49 for 1/2" (13 mm) and 0.73 for 1" (25 mm) thicknesses when used as a limitedlength, free-hanging barrier with the foam facing the noise source.

Each composite foam shall be classed as #94HF-1 as specified by UL-94 Flame Retardancy Tests.

Composite materials shall meet the Sound Transmission Loss (STL) and Noise Reduction Coefficients (NRC) as listed.

The composites shall be furnished with (or without) pressure sensitive adhesive backing on the foam surface depending on the installation requirement, and shall be Model KC as manufactured by Kinetics Noise Control, Inc.

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