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Patent Searching and Data


Title:
PACKAGING BAG AND PACKAGING CONTAINER
Document Type and Number:
Japanese Patent JPH08104369
Kind Code:
A
Abstract:

PURPOSE: To obtain an inner packaging bag and a packaging container free from bad smell and having improved durability by the use of a laminated film containing no anchor coat agent, wherein an ozonized, extruded laminate resin is pressed on a plastic base material to which a specific surface oxidation treatment has been applied.

CONSTITUTION: A surface oxidation treatment is applied to at least one surface of a plastic base material and an ozonization treatment is applied to at least one surface of a film prepared by melt-extruding an extruded laminate resin at a temperature of 180-340°C and both the material and film are compressively bonded to each other to form a packaging film or sheet containing no anchor coat agent, wherein a surface treatment is effected so that the relationship Δ(OC)≥0.08 is established when the plastic base material is a polyester resin and the relationship Δ(O/C)≥0.05 when the base material is other than a polyester resin. However, Δ(O/C)=(O/C)*-(O/C)°, where (O/C)° represents the ratio of number of atoms between O and C measured by ESCA method with respect to a surface to which a surface oxidation treatment has not been applied, and (O/C)* represents the ratio of number of atoms of a surface to which a surface oxidation treatment has been applied.


Inventors:
HAYASHIDA HARUO
ISHIBASHI FUMIO
SHIGEMATSU YUJI
TAKAHATA HIROAKI
KUBO KOJI
GOTO HIROTSUGU
Application Number:
JP20310795A
Publication Date:
April 23, 1996
Filing Date:
August 09, 1995
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO
International Classes:
B65D30/02; A23L3/00; A61J1/10; B32B27/00; B32B27/32; B32B37/15; B65D65/40; B65D81/24; (IPC1-7): B65D81/24; A23L3/00; A61J1/10; B32B27/00; B32B27/32; B32B31/30; B65D65/40
Attorney, Agent or Firm:
久保山 隆 (外1名)