High gas barrier bottles

By using Nichigo G-Polymer as a middle layer, multilayer bottles with high gas barrier performance can be made.

As an adhesive resin, maleic anhydride modifed PO can be used.

Features of emulsions that use Nichigo G-Polymer

Acrylic emulsions that use Nichigo G-Polymer have the following features.

  • Stable emulsification polymerization is possible with a wide range of monomer compositions
  • Excellent mechanical stability, chemical stability, pigment mixture stability, freezing and melting stability, and low temperature viscosity stability
  • Strong adhesion with hydrophilic materials
  • Forms tough films with excellent solvent resistance
  • Water resistance can be increased when used with crosslinking agents
  • Possible to manufacture powder emulsions that can be re-emulsified

Recommended Grades

Melting Point (C)
185

Tg (C)
71

MFR2 (g/10min)
4.0

Note
Standard grade

Melting Point (C)
185

Tg (C)
71

MFR2 (g/10min)
1.4

Note
Flexible type

Oxygen permeability

Co-PET multilayer bottles with Nichigo G-Polymer as a middle layer have high gas barrier performance that is 3 times that of single layer co-PET bottles.

Furthermore, by placing a Nichigo G-Polymer layer on the outside, gas barrier performance that is 50 times higher can be achieved.

Adhesive strength

Nichigo G-Polymer: OKS-8049P
1) Novapex IG226S made by Mitsubishi Chemical Corporation
Sample layer composition: co-PET/middle layer/co-PET (40/20/40 μm)

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