kuraray


News Releases 2005

Two Types of Low-Noise MAGIC TAPE developed
Soft type uses noise-absorbent resin; mesh type uses mesh instead of woven backing

July 27, 2005
Kuraray Fastening Co., Ltd.
(The Kuraray Group)

Left:Low-Noise MAGIC TAPE mesh type Center:MAGIC TAPE (Standard) Right:Low-Noise MAGIC TAPE soft type Left:Low-Noise MAGIC TAPE
Center:MAGIC TAPE (Standard)
Right:Low-Noise MAGIC TAPE soft type

Golf glove using mesh-type,low-noise MAGIC TAPE Golf glove using mesh-type,
low-noise MAGIC TAPE

Using mesh-type, low-noise MAGIC TAPE Using mesh-type, low-noise MAGIC TAPE

Kuraray Fastening Co., Ltd. (Headquarters: Osaka; President: Mitsuhiko Takaoka) which manufactures and sells MAGIC TAPE hook and loop fastener, has announced the development of two new types of MAGIC TAPE that greatly reduce the tearing noise such fasteners make when opened. The new products will go on sale in August.

Although there are times when the distinctive sound of MAGIC TAPE being ripped open is useful, as when it is used as a crime prevention device, at other times it can disturb a quiet environment.
When the Fukui Chamber of Commerce and Industry was preparing in 2003 for an Internet exhibition on complaints and claims against businesses, a 30-year-old housewife told them, "MAGIC TAPE is too noisy when you unfasten it." Kuraray Fastening immediately began to study the mechanism of the peeling noise its hook and loop fasteners make. They discovered that peeling the hook side away from the loop side causes the hooks, which are thick fibers, to oscillate. This oscillation is transmitted to the hard fabric on which the hooks are mounted and thence to the air, creating sound waves. When sound waves strike an object, they can be reflected, transmitted, and absorbed.
Armed with that understanding, the Company developed two new types of low-noise fasteners by (1) greatly reducing the thickness of the hook fibers, substantially increasing the number of hooks, and coating the fabric backing with resin to reduce oscillation, creating the "soft type" fastener; and (2) substituting mesh for woven fabric on the loop side, reducing noise by allowing it to pass through the gaps in the mesh, resulting in the "mesh type" fastener. These were on display at the 2004 Complaints and Claims Internet Exhibition, and having received a favorable reception from the public were readied for mass production and marketing.
Because the soft type MAGIC TAPE does not allow sound to pass, it is suitable for use on hard objects such as cases, bags, and shoes. The mesh type, on the other hand, allows sound to pass through knit and sound-transparent fabrics, and is therefore better suited for use on such things as hospital underwear, back braces, trusses, and gloves. Both products will find applications in many fields.
To illustrate the sound-reduction effects, when conventional MAGIC TAPE is used on golf gloves, opening the fastener produces sound at 90dB, compared to 78dB for the soft type and 80dB for the mesh type.

* dB
The decibel, abbreviated "dB," is a unit of measure for sound. The decibel is a relative unit of measure, not an absolute one, which expresses the relationship of a sound's intensity to a reference intensity on a logarithmic scale. At any given wavelength, 20dB is 10 times the base value, while 40dB is 100 times the reference intensity. This is a good fit to the logarithmic dependence of perceived loudness on sound intensity, which means that a 10dB difference is perceived as twice as loud, a 20dB difference is perceived as 4 times as loud, and so forth. The ambient sound level in a busy factory is ordinarily around 90dB, and in a train, 80dB.

Product Descriptions

1. Principal specifications

Type Hook side Loop side Holding power Remarks
Thickness of hook fibers Density of hooks Tensile Peeling
Standard - - Pile 1㎏/cm² 140g/㎝ -
Soft 35% of standard 3 to 4 times standard Thin pile 55% 50% While the holding power of the new products is less than that of the standard product, it is ample for general-purpose applications such as clothing and gloves. (See JIS L3416 HL1)
Mesh Same as standard 60% of standard Mesh and pile 55% 60%

2. Prices and product descriptions

Soft type (hook side and loop side as set) ¥580 per meter including tax (width 25 mm)
Mesh type (hook side and loop side as set) ¥270 per meter including tax (width 25 mm)

3. Sales targets (totals for both types)

First year ¥50 million
After three years ¥3.0 billion

Kuraray Fastening Co., Ltd.

1. Headquarters 1-12-39, Umeda, Kita-ku, Osaka 530-8611, Japan (Shin Hankyu Building 9F)
2. President Mitsuhiko Takaoka
3. Capital ¥100 million
4. Number of employees 120
5. Business activities Manufacturing, development, and sales of MAGIC TAPE woven hook and loop fastener, MAGILOCK extrusion molded hook fastener, and related products.
  • * The company holds a 60% share of the Japanese market for hook and loop fasteners