The paper introduces some preparations before blow off and analyzes specific operation course of dropping stockline,pointing out that dropping stockline can be reduced to the assigned position safely in the condition of recycling gas.

Raw bamboo fibers reinforced polylactide biodegradable material was prepared by means of non-woven method and moulding pressing technology.

Petroleum olefins based raw materials are non-renewable resources,thus it becomes a hot topic of general interest by using abundant carbohydrate resource to replace petroleum for biology industry at home and abroad to produce synthetic chemicals,degradable materials and bioenergy.

The paper introduced the research development and application of starch blend material,which is one of important degradable materials.

The controlled-release character and formulation of degradable materials with starch used as the base material were studied.

Review on development actualities of degradable plastics;

Development and application of complete degradable plastic;

Research Progress of starch based biodegradable plastics;

Processing property and molding method of degradable plastics;

Research and development of degradable plastics in China;