Process and mould for forming food or beverage container with plant fibres

Abstract

A technology for moulding the food or beverage container with plant fibres includes such steps as feeding raw material, moulding, heating and demoulidng which includes loosening the upper mould a little and pneumatically demoulding the lower mould. The mould is heated by the heating body embedded in upper mould, the heating ring around the lower mould and the heating plate at bottom. Its mould is composed of upper and lower moulds, heating body and demoulding mechanism. An eject rod with central air channel is connected between pneumatic executing part and air source for demoulding of lower mould.

Description

technical field [0001] The invention relates to a plant fiber tableware forming process and mold, which is mainly used for the production of disposable plant fiber environment-friendly tableware, and is also suitable for industrial cushioning packaging products. Background technique [0002] The existing plant fiber foamed tableware molding process and molds mainly adopt external heating, peripheral exhaust, vibration demoulding and other methods. Practice has proved that the above methods have the following defects that cannot be ignored: [0003] 1. The external heating adopts the heating on the upper and lower end panels of the mold, which may easily cause uneven heating of the mold, slow heat transfer, more mold consumables, and different color of the product. During production, the thermal efficiency is low and the molding time is long. [0004] 2. Mold exhaust and diversion mainly rely on small holes on the outer wall of the cavity, which can ea...

AI Technical Summary

Problems solved by technology

[0003] 1. The external heating adopts the heating on the upper and lower end panels of the mold, which may easily cause uneven heating of the mold, slow heat transfer, more mold consumables, and different color of the product. During production, the thermal efficiency is low and the molding time is long.

[0004] 2. Mold exhaust and diversion mainly rely on small holes on the outer wall of the cavity, which can easily cause uneven overflow and pressure difference, resulting in uneven surface quality of the product, the bottom is not easy to dry out, and air pockets and depressions are formed on the inner wall to prevent seepage of the product decline in sexual indicators

[0005] 3. The demoulding of the product mostly adopts direct motion or electromagnetic vibration. Its disadvantages are: the non-gas slit of the lower mold is easy to block, the product is easy to be damaged, the mold is seriously worn, and the effective life of the electromagnet and the relay is seriously insufficient.

[0006] 4. Existing molds generally have fatal defects such as complex structure, high process cost, short service life, insufficient interchangeability, and poor product consistency.

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