Egg tray forming and drying method

Abstract

The invention relates to the field of paper-plastic production equipment, in particular to an egg tray forming and drying method which is used for drying paper-plastic wet blanks and is realized on the basis of drying equipment with a double-layer structure, a dehumidification cavity is formed in the upper layer of the drying equipment, and a drying cavity is formed in the lower layer of the drying equipment. The drying method comprises a dehumidification process and a drying process, in the dehumidification process, a paper-plastic wet blank is subjected to shaping, preheating and dehumidification in hot air in a dehumidification cavity, the dehumidification temperature is 30 DEG C to 120 DEG C, the temperature is kept for 2-3 minutes, and the water content is reduced to 50-80%; the drying procses includes drying the semi-finished product subjected to the dehumidification process in hot air in a drying cavity at the drying temperature of 85 DEG C and 150 DEG C for 12-18 minutes to enable the moisture to be 3-7%, so as to obtain the egg tray product. The method is simple and convenient to implement, the mechanized production process of products can be achieved easily, product quality stability and drying efficiency are guaranteed, and high application and popularization value is achieved.

Description

technical field [0001] The invention relates to the field of paper-plastic production equipment, in particular to a method for forming and drying egg trays. Background technique [0002] Pulp molding uses waste paper as raw material, and molds paper products of certain specifications and shapes on the molding machine with characteristic molds, such as egg trays, etc. The raw materials are widely available and recyclable, and the production process will not cause environmental pollution. Pollution and other advantages, the production process consists of pulping, molding, drying and setting and other processes. Existing enterprises generally separate forming and drying qualitatively, that is, after pulping and pulping, it is manually pressed and formed, and then sent to a drying room by a transport vehicle for drying. In the traditional process, natural wind from outside or drying in a heating furnace is mostly used. Because the moisture content of the semi-finished product o...

AI Technical Summary

Problems solved by technology

In the traditional process, natural wind from outside or drying in a heating furnace are mostly used. Because the moisture content of the semi-finished egg tray wet billet is too high, it takes a long time, which affects the yield rate, and the drying cost is high and the efficiency is low.

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