A regeneration method of an after-use useless article film - Wisconsin Film and Bag, Incorporated

Title:

A regeneration method of an after-use useless article film

Document Type and Number:

Japanese Patent JP5997459

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a method for processing a supply of post-use scrap linear low density polyethylene film or low density polyethylene film into near-virgin quality blown film product.SOLUTION: After tearing a supply of a film in a shredder 18, the surface area of the film is exposed by inter-layer delamination of the film. By agitating and washing the torn film supply in a water bath containing a surfactant, contaminants on the film are removed from the film. By grinding the washed film into smaller pieces, and by additionally washing the ground film in a rotating friction washer 36, additional contaminants are removed from the film. Then, the ground film is dried and compacted, without addition of water, into granulated objects of near-virgin quality blown film product.

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Inventors:

Robert Francis Cresa
James Jay Feeney
Richard Wayne Carlsted
Daniel William Break
Buckel Gary Hacker

Application Number:

JP2012037610A

Publication Date:

September 28, 2016

Filing Date:

February 23, 2012

Export Citation:

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Assignee:

Wisconsin Film and Bag, Incorporated

International Classes:

B29B17/00; B03B5/28; B03B9/06; B03C1/00; B29B9/16; B29B17/04

Domestic Patent References:

JP57163314U
JP54118474U
JP2010241082A
JP5814958A
JP59189946A
JP2003126830A
JP2001170937A
JP2008179075A
JP2001122985A
JP2000176935A
JP2000326407A

Foreign References:

US4379724
US5257740
US5510076

Attorney, Agent or Firm:

Shinjiro Ono
Yasushi Kobayashi
Hiroyuki Tomita
Osamu Hoshino
Noriyuki Arai

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