METHOD OF MANUFACTURING WASTE GRANULATED PLASTICS, AND METHOD FOR THERMAL DECOMPOSITION OF THE PLASTICS

Title:

METHOD OF MANUFACTURING WASTE GRANULATED PLASTICS, AND METHOD FOR THERMAL DECOMPOSITION OF THE PLASTICS

Document Type and Number:

WIPO Patent Application WO/2003/026862

Kind Code:

A1

Abstract:

A method of increasing the apparent density and shape quality of the granulated material manufactured by compressingly forming waste plastics for recycling as chemical materials, and a method of economically thermally decomposing the waste granulated plastics, comprising the steps of shredding the waste plastics containing film−shaped plastics of 15 wt.% or more by a shredding machine (1) to manufacture the plastic pieces of a size suitable for a compressingly forming treatment, manufacturing cylindrical granulated material by a compressive forming machine (4) having a through−hole die of 5 to 80 mm in diameter, and thermally decomposing the waste granulated plastics for recycling into chemical materials or thermally decomposing the granulated material in a coke furnace or a blast furnace for recycling.

Inventors:

IBARAKI TETSUHARU
IKEDA MOTOKI
KOSEKI TSUNEO
GOTO HIROKI

Application Number:

PCT/JP2002/002795

Publication Date:

April 03, 2003

Filing Date:

March 22, 2002

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIPPON STEEL CORP (JP)

International Classes:

B29B9/10; B29B9/06; B29B9/08; B29B17/00; B29B17/04; B29C48/345; C08J11/10; C10B53/07; C10B53/08; C10B57/04; C10L5/48; C21B5/02; B29K23/00; B29K105/26; (IPC1-7): B29B17/00; C10B53/00; C10L5/48; C21B5/00

Domestic Patent References:

WO1995017527A1

1995-06-29

Foreign References:

JP2001232634A	2001-08-28
JP2001049261A	2001-02-20
JP2001341131A	2001-12-11
EP1083212A1	2001-03-14
JP2000198992A	2000-07-18

Other References: