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Recycling and Application of HDPE Bottle

The market for HDPE recycled from milk bottles and juice bottles is limited to blow moulding or extrusion products. Although recycled HDPE can be used for injection moulding, the high molecular number of HDPE will lead to a relatively high injection pressure, and excessive orientation will lead to partial warping of the material.

HDPE recycled from old milk bottles has been used in the following occasions, such as motor lubricating oil bottles, cargo bags, packing belts, drainage pipes, dish basins, co-extrusion of the inner layer of bottles, or blow-moulding containers, pallets, garbage bags, garbage containers, packaging, and so on.

Large Molded Vessel

The modifier currently used is linear low density polyethylene (LLDPE) with a melt index of 20 g/10 min. This modifier is used to improve the fluidity of PCR for easy processing. The 50/50 blends of LLDPE and PCR have good fluidity and can save cycle time for injection moulding of large parts.

LLDPE can also give better fracture toughness and ESCR
performance to dairy recycled materials. The blends have been successfully used in movable trash cans. The garbage cans made of foam injection molding are light in weight and durable.

Blow molding bottle

HDPE blowing bottles used in household and industrial chemicals, such as shampoo, bleach, detergent and liquid soap bottles, are the main applications of HDPE recovery. Procter and Gamble in the United States were the first to introduce 100% recycled HDPE bottles into the Ultra DownyTM fabric softener production line.

Multilayer blow-moulded containers for food contact

Safety materials can be used in multi-layer packaging of dried food.The inner contact layer with food is new HDPE with a thickness of at least 100 um. Note that this resin can not be used in food packaging with fat on the surface. But it can be used for personal care products such as lotion, skin cream and HDPE shampoo  bottles.
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