Quiet touch fastener material

• US 4,776,068 A
• Filed: 10/20/1986
• Issued: 10/11/1988
• Est. Priority Date: 10/20/1986
• Status: Expired due to Fees

• Current Assignee: Velcro Industries BV (Chartwell Industries Ltd)
• Original Assignee: Velcro Industries BV (Chartwell Industries Ltd)
• Inventors: Madden, Richard, Ludlow, Jonathan, Smirlock, Martin E.
• Primary Examiner(s): Sakran, Victor N.
• Application Number:
  US06/921,731
• Time in Patent Office: 722 Days
• Field of Search: 24/442, 24/443, 24/444, 24/445, 24/447, 24/448, 24/451, 24/306, 2/DIG. 6, 2/167, 156/280, 428/138
• US Class Current: 24/442
• CPC Class Codes: A44B 18/0069 Details
• CPC Class Codes: Y10T 24/27 including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener]
• CPC Class Codes: Y10T 24/2708 Combined with diverse fastener
• CPC Class Codes: Y10T 24/2725 with feature facilitating, enhancing, or causing attachment of filament mounting surface to support therefor

Abstract

Silent touch fastener material adapted to releasably engage a mating surface and adapted to produce reduced sound during rapid separation of the touch fastener material from the mating surface. The material comprises a planar backing material having an engaging surface thereon contacting the backing material at discrete points and adapted to releasably engage the mating surface and means for reducing the coupling of noise-producing vibration from the backing material into the surrounding air. Various embodiments disclose the backing material as having a high mass relative to the mass of the engaging surface; a planar high mass supplemental backing material bonded to the backing material; a flexible, high mass material incorporated into the backing material; means disposed at the discrete points of attachment of the engaging surface to the backing material for suppressing the coupling of vibrations produced in the engaging surface into the backing material; and, the backing material comprising a lattice structure having low ability for transferring vibrations induced therein into the air surrounding it.

Claims

1. Silent touch fastener material, to releasably engage a mating surface and adapted to produce less sound than prior art touch fasteners during rapid separation of the touch fastener material from the mating surface, said touch fastener material comprising:

(a) a planar backing material having an engaging surface thereon, extending therefrom at discrete points and adapted to releasably engage the mating surface; and

,

(b) the backing material comprising a lattice structure having low ability for transferring vibrations induced therein into the air surrounding it thereby providing means for reducing the coupling of noise-producing vibration from said backing material into the surrounding air upon separation of said touch fastener material.

2. The silent touch fastener material of claim 1

said lattice structure comprising at least 50% air space.

3. The silent touch fastener material of claim 2

said lattice structure comprising at least 70-% air space.

4. A touch fastener material according to claim 1 having a noise of separation of less than about 66 dB(A), at a normal rate of separation, when measured at 1 foot from the area of separation of the fastener with one component of the fastener being rigidly attached to a massive structural member chosen to contribute minimum noise to the noise of separation, measurement being made by a sound meter meeting ANSI 51.4-1983 type 1 and set to RMS, fast response and random incidence, the fastener being a hook and loop fastener.

5. A touch fastener according to claim 4 wherein the noise of separation is less than about 60 dB(A).

6. A touch fastener according to claim 4 wherein the noise of separation is less than about 54 dB(A).

7. Silent touch fastener material, to releasably engage a mating surface and adapted to produce less sound than prior art touch fasteners during rapid separation of the touch fastener material from the mating surface, said touch fastener material comprising:

(a) a planar backing material having an engaging surface thereon, extending therefrom at discrete points and adapted to releasably engage the mating surface; and

,

(b) the planar backing material having an increased mass to provide an aerial density of the backing thereby providing means for reducing the coupling of noise-producing vibration from said backing material into the surrounding air sufficiently to reduce the sound pressure level by at least 4.2 dB upon separation of said touch fastener material.

8. The silent touch fastener material of claim 7 wherein:

said increased mass of said backing material is produced by bonding a planar high mass supplemental backing material to said backing material.

9. The silent touch fastener material of claim 7

said increased mass material comprising a material having the qualities and characteristics of leaded vinyl.

10. The silent touch fastener material of claim 7

said increased mass material being leaded vinyl.

11. The improvement to touch fastener material of claim 7 wherein:

said backing material has a flexible, high mass material incorporated into said backing material.

12. A touch fastener material according to claim 7 having a noise of separation of less than about 66 dB(A), at a normal rate of separation, when measured at 1 foot from the area of separation of the fastener with one component of the fastener being rigidly attached to a massive structural member chosen to contribute minimum noise to the noise of separation, measurement being made by a sound meter meeting ANSI 51.4-1983 type 1 and set to RMS, fast response and random incidence, the fastener being a hook and loop fastener.

13. A touch fastener according to claim 12 wherein the noise of separation is less than about 60 dB(A).

14. A touch fastener according to claim 13 wherein the noise of separation is less than about 54 dB(A).