Title:
【発明の名称】セルロース製の食品ケースの製造に使用するためのマンドレル構造
Document Type and Number:
Japanese Patent JP2895471
Kind Code:
B2
Abstract:
Mandrel, for sizing a tubular extrusion (16) of a thermoplastic cellulose solution which is extruded downwardly from a die (12) and into a bath of liquid which regenerates cellulose from the thermoplastic solution, has a shaft (28) depending from the die (12) carrying a sizing portion (30) at its lower end, and disposed, at least partly, below the level of the liquid in the bath. The sizing portion has an outer cylindrical surface provided with an arrangement (33,35) for accumulating gas bubbles evolved from the extruded tube and which appear between the inner surface of the tube and the outer surface of the sizing portion. Also claimed is the method of using the arrangement above to extrude a cellulose tube, in which a non solvent liquid is introduced into the interior of the tube to form a pool (49) of liquid about the sizing portion, and accumulated gas is withdrawn into the interior of the mandrel below the sizing portion (30); and the mandrel structure in which the cellulose solution is composed of non-derivativatised cellulose, a tertiary amine oxide cellulose solvent, and water, and in which the gas evolved is aspirated into the mandrel from below the sizing portion.
Inventors:
EDOWAADO MAKOTO KAJIWARA
BURANTO ANTON ROISHINGAA
BURANTO ANTON ROISHINGAA
Application Number:
JP9521898A
Publication Date:
May 24, 1999
Filing Date:
March 25, 1998
Export Citation:
Assignee:
BISUKEISU CORP
International Classes:
B29C48/10; B29C48/32; B29C48/90; B29K1/00; B29L23/00; (IPC1-7): B29C47/20; B29C47/88
Domestic Patent References:
| JP10272674A |
Other References:
【文献】国際公開93/13670(WO,A1)
【文献】欧州特許出願公開662283(EP,A1)
【文献】欧州特許出願公開662283(EP,A1)
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)