Cleaning element for rotating brush, made of an ethylene vinyl acetate (EVA) copolymer

• US 6,001,448 A
• Filed: 03/20/1997
• Issued: 12/14/1999
• Est. Priority Date: 03/13/1997
• Status: Expired due to Term

• Current Assignee: Edoardo Favagrossa S.r.l.
• Original Assignee: Nowiteck Establishment
• Inventors: Zigerlig, Max
• Primary Examiner(s): Mullis, Jeffrey C.
• Application Number:
  US08/821,305
• Time in Patent Office: 999 Days
• Field of Search: 428/115, 428/116, 428/131, 428/192, 428/67, 521/142
• US Class Current: 428/67
• CPC Class Codes: A46B 13/001 Cylindrical or annular brush bodies
• CPC Class Codes: A46D 1/00 Bristles; Selection of materials for bristles making artificial bristles D01D, D01F
• CPC Class Codes: Y10T 428/22 Nonparticulate element embedded or inlaid in substrate and visible

Abstract

A flexible cleaning element for rotating brushes for automatic washing of vehicles, suitable for being attached to a rotating support and made of an expanded closed-cell synthetic resin is provided. The expanded synthetic resin includes a copolymer that is obtained by adding vinyl acetate to it.

Claims

1. A flexible cleaning element, suitable for attachment to a rotating support for rotating brushes, used for automatic washing of vehicles, comprising an expanded closed-cell synthetic resin, wherein said expanded closed-cell synthetic resin includes an ethylene vinyl acetate copolymer containing approximately 80% by weight of said ethylene vinyl acetate copolymer, which in turn contains 9-28% of its weight in vinyl acetate and further comprises:

approximately 10% by weight of amorphous precipitated silica;

approximately 2% by weight of bis(tert-butyl peroxyiso-propyl) benzene;

approximately 2.5% by weight of azodicarbonamide;

approximately 0.5% by weight of stearin; and

approximately 5% by weight of pigments.

2. A flexible cleaning element, suitable for attachment to a rotating support for rotating brushes, used for automatic washing of vehicles, comprising an expanded closed-cell synthetic resin, wherein said expanded closed-cell synthetic resin includes an ethylene vinyl acetate copolymer containing approximately 60% by weight of said ethylene vinyl acetate copolymer, which in turn contains 9-28% of its weight in vinyl acetate and further comprises:

approximately 20% by weight of natural or synthetic rubber;

approximately 10% by weight of amorphous precipitated silica;

approximately 2% by weight of bis(tert-butyl peroxyiso-propyl) benzene;

approximately 2.5% by weight of azodicarbonamide;

approximately 0.5% by weight of stearin; and

approximately 5% by weight of pigments.

3. Cleaning element according to claim 2, in which said ethylene vinyl acetate copolymer contains 18% by weight of vinyl acetate.

4. A flexible cleaning element, suitable for attachment to a rotating support for rotating brushes, used for automatic washing of vehicles, comprising an expanded closed-cell synthetic resin, wherein said expanded closed-cell synthetic resin includes an ethylene vinyl acetate copolymer containing approximately 47% by weight of said ethylene vinyl acetate copolymer, which in turn contains 9-28% by weight of vinyl acetate and further comprises:

approximately 5% by weight of low-density polyethylene;

approximately 40% by weight of amorphous precipitated silica;

approximately 1.1% by weight of stearic acid;

approximately 2% by weight of zinc oxide;

approximately 3% by weight of azodicarbonamide; and

approximately 2% by weight of bis(tert-butyl peroxyiso-propyl) benzene.

5. Cleaning element according to claim 4, in which said ethylene vinyl acetate copolymer contains 18% by weight of vinyl acetate.