Friday, June 5, 2009

Ran Lerner Design - Waste Free Packaging

Plastarch Material ("PSM"), which is a revolutionary ecological material; is a combination of "plastic functional characteristics and starch biodegradable advantages"; and can be use for a large variety of manufacturing processes such as film blowing, injection molding, sheet extrusion, thermoforming and foaming. PSM has become part of the substitution products on plastic in which it has a very competitive price and excellent product performance in terms of durable and totally degradable under compost conditions and by incineration as well.

PSM is a polymer that is derived from the natural source of corn starch. Corn starch is a kind of polysaccharide polymer which consists of glucoses. It has two separate forms of linear and branched molecules, named as amylose and amylopectin respectively. During the modification process, corn starch is mixed with cellulose and enzymes in a large stirrer where condensation and polymerization happen to modify the starch properties. Enzyme addition and crosslink technique transforms the molecular structure of starch which has three distinguishable properties:

  • Change from hydrophile to hydrophobe
  • Change from heat sensitivity to high temperature resistance
  • Change from brittleness to plasticity

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