초록 ▼

A transparent multi-layer container comprising a co-extrudate of an oxygen-barrier resin layer and an orienting resin layer which is monoaxially or biaxially oriented is disclosed. An adhesive resin layer is preferably interposed between the oxygen-barrier layer and the orienting resin layer, and th

A transparent multi-layer container comprising a co-extrudate of an oxygen-barrier resin layer and an orienting resin layer which is monoaxially or biaxially oriented is disclosed. An adhesive resin layer is preferably interposed between the oxygen-barrier layer and the orienting resin layer, and this co-extrudate is drawn and molded at a specific temperature determined relatively to the melting points and softening points of the respective resins. This container is excellent in the combination of transparency, rigidity, mechanical strength, gas-barrier property and interlaminar peel strength.

대표청구항 ▼

A transparent multi-layer varied thickness container obtained by draw-forming a parison composed of a coextrudate of at least one oxygen barrier thermoplastic resin layer and at least one crystalline polyolefin layer, said oxygen barrier thermoplastic resin having an oxygen permeability lower than 5

A transparent multi-layer varied thickness container obtained by draw-forming a parison composed of a coextrudate of at least one oxygen barrier thermoplastic resin layer and at least one crystalline polyolefin layer, said oxygen barrier thermoplastic resin having an oxygen permeability lower than 5.5×10-12 ccㆍcm/cm2ㆍsecㆍcmHg as measured at 37°C. and being selected from the group consisting of a copolymer consisting essentially of ethylene and vinyl alcohol and a polyamide, wherein said oxygen barrier thermoplastic resin and said polyolefin are selected so that the requirement represented by the following formula: │TB-TO│≤35°C. wherein TB stands for the melting or softening point (°C.) of said oxygen-barrier thermoplastic resin and TO stands for the melting or softening point (°C.) of said polyolefin, is satisfied, and wherein at least one of two-dimensional orientation coefficients (l and m) of at least one layer composed of said polyolefin in a smallest-thickness portion of the container is at least 0.05.