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來源:www.vedsuran.com 發布時間:2022-11-11 瀏覽次數:122
The disposable paper lunch box can be used in restaurants, canteens, street snacks, food packaging lunch boxes, fruit and vegetable boxes, hotel business supplies, etc. It is very convenient to use, highly biodegradable, and will not damage the environment. Next, specifically, the production process of paper lunch boxes.
1. Pulping process.
The main raw material of paper lunch boxes is usually bleached wood pulp, and imported wood pulp is usually required for the production of more commercial products. Medium grade products can choose domestic ordinary wood, and pulp and low-grade products can choose bagasse pulp, straw pulp, bamboo pulp, reed pulp, white paper edge and other short fiber pulp.
Here, bubble slurry acts with the hydraulic turbine pulper. Saponify the fiber through cutting, improve the fiber's binding capacity, add relevant auxiliary materials, improve the moisture resistance of pulp tableware and the waterproof performance of finished products, and add specific related materials. After paving and slurry preparation, adjust the concentration of raw slurry to about 2%, so as to facilitate dewatering and molding of raw slurry on the mesh mold.
2. Forming process.
Forming technology is to make raw pulp into semi wet tableware blanks with different shapes. That is, the pulp designed by the pulping process forms the bottom layer of wet pulp tableware on the metal material mold during dehydration, which is a key process in the production of paper tableware. About 95% of the water in the pulp is removed during the formation process.
Therefore, the product quality and energy consumption in this process are very high, and the improvement of production efficiency and crushing rate play a decisive role. The molding quality depends on the molding machine, molding method, mold structure, as well as the quality and quality factors of raw slurry.
3. Molding and drying.
The process of forming by a special forming machine to remove the water not removed from the pulp tableware prototype during the forming process and reduce the drying and dehydration costs is called forming. At the same time, molding can improve the adhesion between fibers and increase the strength of the wet paper mold.
4. Integer and trimming.
The process adopts hot die pressing and calendering to eliminate the mesh marks left by the paper grid forming, and make the internal and external surfaces smooth. According to the use requirements of different customers, certain pressure is applied, as well as words and patterns. At the same time, cut off the burrs on the edge of the tableware, and press down the indentation that is convenient for folding the disposable lunch box cover to open.
The design of the paper lunch box is beautiful and generous, which not only avoids the waste of resources, but also turns waste into treasure and avoids the environmental pollution in the process of treatment. If you have customized or wholesale needs, you can come to our website at any time http://www.vedsuran.com Ask about it!