Virgin paper and other recycled materials can be used directly for the egg tray machine. The composition of wasted paper is very complex, some in straw-basedprinting material, such in wood-based waste newspaper, some in grass pulp mixed waste cartons. Egg trayproduced by the different components have differentproperties, therefore, to obtain better economic resultsand performance, different pulp composition can be mixed in the real egg tray production.
The egg tray molding solution in China is called vacuum shaping solution. The molding equipment are a copycat from British Thomson’s two-station moldingequipment and transmission type linear automatic production line. Two-position device is currently ismainstream models. It also includes rotary types and reciprocating types.
Rotary type machine has higher level of technique, whose midge process is commonly known as “reversesuck” type, it can adapt to higher productivity and larger products, but the price is slightly higher. Thereciprocating type is cheaper in price , the molds sink into slurry tank during production, commonly known as “upper suction” type, it could normally cause uneven thickness in large molding products.
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