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Pulp molding equipment Wheat straw environmentally friendly tableware production Pulp wet pressing

catalogue：Industry News ctr： time：2022-07-07 09:49:33

1. Pulp molding wet pressing process

The wet pressing process refers to the process of injecting the slurry into the molding die through the pipeline after pulping, adsorbing excess water by vacuum, forming a wet embryo and immediately transferring it to the hot pressing molding die for rapid extrusion drying;

Advantages of the wet pressing process: The environmental protection tableware produced by the wet pressing process has high production efficiency, and is transferred to the final shape immediately after forming, and the production speed is fast; the moisture content of the wet embryo in the wet pressing process is about 65-75%, the moisture content is high, and the vacuum adsorption time is required for a long time; The degradable tableware produced by the wet pressing process has a smooth and delicate surface and is beautiful; the disposable lunch box produced by the wet pressing process has a thinner wall thickness, higher density, and saves volume;

Disadvantages of the wet pressing process: it is not easy to draw or demold the disposable lunch box products with a small slope; the products with a small R angle or a small slope have a higher breaking rate; the heat energy consumption is large.

Application fields of wet pressing process:

1. High-quality work bags, also known as paper-plastic work bags, are mainly molded products with smooth and beautiful outside formed by wet compression molding. These products are mostly suitable for electronic lining boxes, razor packaging boxes, and clothing packaging boxes. , glasses case, etc. These products require extremely high precision, beautiful appearance and higher added value than other ordinary wet-pressed products.

In order to be more beautiful and improve the added value of the packaged products, such products can also be printed in color to better display the effect of packaging.

2. Food packaging containers, also known as disposable degradable tableware, generally refer to wet-pressed molded products containing food such as plates, bowls, boxes, cake dishes, etc., which are generally made of wheat straw, sugarcane and other plant fibers. Complete, add food-grade waterproof and oil-proof dosage.

It can be used in daily catering, hotel dine-in, take-out and delivery, etc. This type of product requires microorganisms and heavy metals to meet food-grade requirements. It is produced in a dust-free workshop and has a clean and beautiful appearance.

3. Medical trays, mainly wet-pressed products, are mostly used for the stacking of registered equipment, etc., requiring dust-free workshop production, microorganisms must be controlled in accordance with medical standards, and dust-free vacuum sealing.

4. Recreational toys refer to masks, colored toys, etc., which can be produced by semi-dry pressing and wet pressing. It requires good surface smoothness and can retain the painted dyes well, making the hand feel more delicate and smooth. .

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