Self-adhesive vibration damping tape and composition

• US 20040219322A1
• Filed: 05/28/2004
• Published: 11/04/2004
• Est. Priority Date: 08/14/2002
• Status: Abandoned Application

• Current Assignee: ADCO Products Incorporated (Republic Services Incorporated)
• Original Assignee: ADCO Products Incorporated (Republic Services Incorporated)
• Inventors: Fisher, Dennis K., Asthana, Siddhartha
• Application Number:
  US10/857,143
• Publication Number:
  US 20040219322A1
• Time in Patent Office: Days
• US Class Current: 428/40.1
• CPC Class Codes: B32B 15/06 of natural rubber or synthetic rubber
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 2305/70 Scrap or recycled material
• CPC Class Codes: B32B 2307/56 Damping, energy absorption
• CPC Class Codes: B32B 2311/24 Aluminium
• CPC Class Codes: B32B 2405/00 Adhesive articles, e.g. adhesive tapes labels B32B2519/00
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B60R 13/08 Insulating elements, e.g. for sound insulation sound insulating linings for trains B61D17/185; drivers' cabs for load-carrying vehicles insulated against vibrations or noise B62D33/0604; thermal or acoustic insulation of engines F02B77/11; damping of sounds using compensation by electro-acoustic methods G10K11/178
• CPC Class Codes: C08L 21/00 Compositions of unspecified rubbers
• CPC Class Codes: C09J 11/08 Macromolecular additives
• CPC Class Codes: C09J 2400/263 in the substrate
• CPC Class Codes: C09J 2421/00 Presence of unspecified rubber
• CPC Class Codes: C09J 2423/00 Presence of polyolefin
• CPC Class Codes: C09J 2453/00 Presence of block copolymer
• CPC Class Codes: C09J 7/10 without carriers
• CPC Class Codes: C09J 7/21 Paper; Textile fabrics
• CPC Class Codes: C09J 7/22 Plastics; Metallised plastics
• CPC Class Codes: C09J 7/28 Metal sheet metallised plastics C09J7/22
• CPC Class Codes: C09J 7/38 Pressure-sensitive adhesives [PSA]
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive

Abstract

A self-adhesive vibration damping tape for adhering to a substrate is provided. The tape is formed from a vibration damping composition comprising a synthetic rubber polymer, a thermoplastic polymer, a plasticizer, and an organic filler comprised of recycled automotive paint powder. The composition is preferably formed into a tape which includes a release liner on one surface and an aluminum foil facing on the other surface. In use, the tape is adhered on one surface to a substrate such as an automotive or appliance part to provide vibration damping properties as well as seal out the infiltration of air, dust and moisture.

Claims

1. A self-adhesive vibration damping tape comprising:

a vibration damping composition comprising a polymer selected from the group consisting of synthetic rubber polymers, thermoplastic polymers, and mixtures thereof;

a plasticizer; and

an organic filler comprising recycled automotive paint powder;

wherein said vibration damping composition is in the form of a tape having first and second major surfaces.

2. The vibration damping tape of claim 1 further including a release liner adhered to at least one major surface of said tape.

3. The vibration damping tape of claim 1 further including an aluminum foil facing laminated to at least one major surface of said tape.

4. The vibration damping tape of claim 1 wherein said synthetic rubber polymer is selected from the group consisting of butyl rubber, polyisobutylene, styrene-butadiene rubber, styrene-isoprene rubber, and mixtures thereof.

5. The vibration damping tape of claim 1 wherein said thermoplastic polymer is selected from the group consisting of amorphous polyolefins, ethylene-based copolymers, ethylene-based terpolymers, styrene-butadiene-styrene block copolymers, hydrogenated styrene-butadiene-styrene block copolymers, and hydrogenated styrene-isoprene-styrene block copolymers.

6. The vibration damping tape of claim 5 wherein said thermoplastic polymer comprises an amorphous polyolefin selected from the group consisting of polypropylene-ethylene copolymers, polypropylene/polypropylene-ethylene copolymers, polypropylene homopolymers, polyethylene homopolymers, and mixtures thereof.

7. The vibration damping tape of claim 5 wherein said thermoplastic polymer comprises an ethylene-based copolymer or terpolymer selected from the group consisting of ethylene/vinyl acetate copolymers, ethylene/vinyl acetate/acid terpolymers, ethylene-acrylic acid copolymers, and mixtures thereof.

8. The vibration damping tape of claim 1 wherein said plasticizer comprises polybutene.

9. The vibration damping tape of claim 1 wherein said recycled automotive paint powder has been pretreated by heating said paint powder to a temperature sufficient to reduce volatile compounds in said paint powder.

10. The vibration damping tape of claim 1 wherein said vibration damping composition further includes an antioxidant.

11. The vibration damping tape of claim 1 wherein said vibration damping composition further includes an adhesion promoter.

12. The vibration damping tape of claim 1 wherein said vibration damping composition further includes a coloring agent.

13. The vibration damping tape of claim 1 wherein said vibration damping composition further includes an inorganic filler.

14. The vibration damping tape of claim 1 having a thickness of about 0.5 to 2.0 mm.

15. In combination, a self-adhesive vibration damping tape and a substrate comprising:

a vibration damping composition provided in the form of a tape having first and second major surfaces, said tape being covered on said first surface by a facing or liner;

said vibration damping composition comprising a polymer selected from the group consisting of synthetic rubber polymers, thermoplastic polymers, and mixtures thereof;

a plasticizer, and an organic filler comprising recycled automotive paint powder;

wherein said vibration damping tape is adhered to said substrate on said second surface.

16. The combination of claim 15 wherein said substrate is comprised of a material selected from the group consisting of metal, wood, glass, and fabric.

17. The combination of claim 15 exhibiting a minimum composite loss factor of 0.05 at a temperature range of 0°

C. to 60°

C. and resonance frequency of 200 Hz.

18. The combination of claim 15 wherein said facing or liner comprises a metal.

19. The combination of claim 15 wherein said facing or liner comprises aluminum.

20. A self-adhesive vibration damping tape composition comprising:

from about 5 to 10% by weight of a synthetic rubber polymer;

from about 1 to 10% by weight of a thermoplastic polymer;

from about 15 to 30% by weight of a plasticizer; and

from about 5 to 50% by weight of an organic filler comprising recycled automotive paint powder.

21. The self-adhesive vibration damping tape composition of claim 20 comprising from about 23 to about 27% by weight of said organic filler.