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Title:
THREE-DIMENSIONAL NET-LIKE STRUCTURE, AND METHOD AND DEVICE FOR PRODUCING THREE-DIMENSIONAL NET-LIKE STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2001/068967
Kind Code:
A1
Abstract:
A method and device for producing a three-dimensional net-like structure which does not require finishing in the post-process, has an increased degree of alignment, makes it possible to cope with profiled cross sections, and has improved durability. A three-dimensional net-like structure (1) using thermoplastic resin as the raw or main raw material is a plate-like three-dimensional net-like structure characterized by comprising a plurality of filaments spirally indiscriminately entangled and locally welded. The density of any of at least three surfaces or four surfaces on the outer periphery of the three-dimensional net-like structure is preferably relatively lower than the density of the other portion excluding these surfaces, and flakes or chips of PET bottles are used as the raw or main raw material for thermoplastic resin, such PET bottles being directly crushed and then melted to provide flakes, answering the needs of the times for promotion of recycle, working well in waste disposal cost reduction, the uses of the three-dimensional net-like structure (1) including, chiefly, shock absorbers, cushioning materials, and sound-absorbing building materials.

Inventors:
TAKAOKA NOBUYUKI (JP)
Application Number:
PCT/JP2001/002046
Publication Date:
September 20, 2001
Filing Date:
March 15, 2001
Export Citation:
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Assignee:
C ENG CO LTD (JP)
TAKAOKA NOBUYUKI (JP)
International Classes:
B29C43/02; B29C43/22; B29C43/34; B29C48/05; B29C48/30; B29C48/345; D04H3/03; D04H3/07; D04H3/16; D04H13/00; (IPC1-7): D04H3/07; B29C47/30
Foreign References:
GB2214940A1989-09-13
JPH0921054A1997-01-21
GB2275695A1994-09-07
JPH11241264A1999-09-07
JPH0768284A1995-03-14
GB2224191A1990-05-02
JPH0899093A1996-04-16
JPH07189106A1995-07-25
JPH0874161A1996-03-19
JPH05106153A1993-04-27
JPS62128739A1987-06-11
US5639543A1997-06-17
US5464491A1995-11-07
US4012249A1977-03-15
JPH0952275A1997-02-25
GB2214940A1989-09-13
JPH0921054A1997-01-21
GB2275695A1994-09-07
JPH11241264A1999-09-07
JPH0768284A1995-03-14
GB2224191A1990-05-02
JPH0899093A1996-04-16
JPH07189106A1995-07-25
JPH0874161A1996-03-19
JPH05106153A1993-04-27
JPS62128739A1987-06-11
Other References:
See also references of EP 1270787A4
Attorney, Agent or Firm:
Ozaki, Takahiro (Chuohommachi Gamagori-shi, Aichi, JP)
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