You are here:Home > Industry knowledge expansion > Technological process of pulp molding products

Technological process of pulp molding products




Straw straw, bagasse, wheat straw, waste paper, etc. are used as raw materials, after being crushed, refining, etc., through physical processes, the fibers are suspended in water, and the raw pulp fibers are blended in the pulping process according to the characteristics of the preset products. The length and the original slurry are concentrated, a certain amount of chemical auxiliaries are added, and a series of auxiliary operations are carried out to form a pulp which meets the production requirements (the raw materials may be wet pulp, dry pulp or waste paper depending on the product), and the concentration is adjusted and then transported. To the molding machine.

Second, forming.

On the molding machine equipped with the mold, the wet paper blank is formed by vacuum adsorption or pressure grouting, so that the original pulp fiber forms the shape set by the mold, wherein vacuum adsorption molding is the most common and most effective one, and then the molding is performed. The wet paper blank is removed from the film into the next process.

Third, drying.

The wet paper blank is placed on a hot mold or placed on a conveyor belt and transported to a drying box for hot pressing drying. The drying process mainly uses fuel, oil, gas, electricity or steam, heat transfer oil or other medium as a heat source to heat the air. The molded pulp molded article is dried in hot air, and evaporated water is extracted from the product by a fan to accelerate the drying effect.

Fourth, Shaping.




Contact HGHY

Please feel free to let us know your demand information, we will contact you as soon as possible, looking forward to cooperate with you!