Title:
フィルムの積層体およびそれの製造方法および製造装置
Document Type and Number:
Japanese Patent JP4677185
Kind Code:
B2
Abstract:
A flexible laminate of films of thermoplastic polymer material comprises fluted ply A and substantially flat ply B, adhered to one another at the crests of A in contact with B. The wavelength of the flutes is preferably no more than 3mm. A has attenuated zones (6) extending parallel to the flute direction, each bonding zone being mainly located within a first attenuated zone (6). Apparatus for forming the laminate comprises aligned grooved fluting rollers and grooved laminating roller. The laminate has useful mechanical characteristics, as a flexible material, e.g. when formed into bags which may be self-supporting. Filler material may be filled into the flutes and/or perforations may be provided in one or both plies after lamination.
Inventors:
Rasmussen Ole-Vent
Application Number:
JP2003505157A
Publication Date:
April 27, 2011
Filing Date:
June 14, 2002
Export Citation:
Assignee:
Rasmussen Ole-Vent
International Classes:
B32B3/28; B65D30/02; B31F1/20; B32B1/00; B32B7/04; B32B27/00; B32B27/32; B65D30/16; B65D65/40
Domestic Patent References:
| JP63203567A | ||||
| JP52080773U | ||||
| JP7232764A | ||||
| JP2133331U |
Foreign References:
| US4132581 | ||||
| US5670238 | ||||
| US6139938 |
Attorney, Agent or Firm:
Mitsufumi Esaki
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith