January 26, 2009 Enviroclear Barrier Technology for PET & Polyolefins

Aims / Goals of Project Development of a novel barrier technology for plastics packagingDevelopment of a novel barrier technology for plastics packaging Market need: PET good but not great... (fruit juices, beer, jams, preserves, etc.)Market need: PET good but not great... (fruit juices, beer, jams, preserves, etc.) Basic requirements:Basic requirements: –Good oxygen barrier –Good adhesion (no delamination) –Flexible –Recyclable –Transparent –No scuffing –Blister resistance –Cost-effective

Market Info

Barrier Properties of Some Common Plastics

Approaches to Improving Barrier Properties

Barrier Technologies in Market e.g. EVOH, MXD6e.g. PEN (polyethylene naphthalate) x Requires new production linesx Expensive x Complicated / difficult to runx Barrier still not high enough (e.g. PEN x Cost of barrier layer5xPET barrier) x Recycling problematic x Generally requires binding layers (i.e. min 5 layers) x Special very expensive molds and machines x Barrier not high enough, degrades with humidity e.g. SiO x, diamond-like carbon, amorphouse.g. Epoxy-amine spray coating Carbonx Matrix oxygen x Low speedsx Recycling? x High costs (vacuum) x Cracking & delamination x Recycling Multilayers Materials Inside coatings Outside coatings

Oxygen permeability results – 500 ml bottle

Patent Status Patents –Received favourable international preliminary report on patentability from PCT –Have entered national patenting phase –Granted: USA, Canada, Europe (EPO), France, Netherlands, South Africa, Japan, China, Australia