Laminated packaging material

Laminated packaging material

  • CN 103,101,273 B
  • Filed: 12/31/2012
  • Issued: 04/08/2015
  • Est. Priority Date: 12/31/2012
  • Status: Active Grant
First Claim
Patent Images

1. a laminate wrapping material, comprise thermoplastic outermost layer (21), sandwich layer (22), thermoplastic intermediate layer (23), barrier layer (24) and thermoplastic innermost layer (26) from outside to inside, it is characterized in that:

  • described thermoplastic intermediate layer (23) comprises LLDPE (mLLDPE) and the low density polyethylene (LDPE) (LDPE) of metalloscene catalyst polymerization;

    The LLDPE (mLLDPE) of described metalloscene catalyst polymerization has following parameter;

    averag density is 0.88g/cm 3~ 0.925g/cm 3, melt flow index is 5 g/10min ~ 20 g/10min, Peak melting point is 85 DEG C ~ 130 DEG C, expansion ratio is 1.2 ~ 1.8;

    Described low density polyethylene (LDPE) (LDPE) has following parameter;

    averag density is 0.90g/cm 3~ 0.925g/cm 3, melt flow index is 5g/10min ~ 20g/10min, Peak melting point is 85 DEG C ~ 110 DEG C, expansion ratio is 1.2 ~ 1.8;

    Described melt flow index condition determination is 190 DEG C, 2.16kg.

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