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Technological process of pulp molding products


随着科学技术的飞速发展,我国纸浆模塑技术在技术人员的转型下得到了不断提高,在一定程度上弥补了中国纸浆模塑行业发展的短暂弊端。尽管中国的纸浆模塑行业只有十多年的历史,但其流程却是精简和先进的。


纸浆模塑产品的工艺过程主要包括五个部分:


首先,进行浆料处理(制浆→制浆→成型浆)。

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.

纸浆产品经过成型和干燥过程后,基本成型,然后通过电加热板或其他热介质(例如传热油)加热加热板,使纸浆产品模具具有高温(150-250°C),然后用气压或液压在高温高压下挤压纸盒产品,使产品形状整洁美观,并获得更好的韧性,从而具有更好的冲击力抵抗性。


第五,收拾行装。

最后,对通过一系列过程生产的纸产品进行检查,包装和存储。其中,根据不同产品的特性,可以使用手动包装或自动打包机进行计数和包装。

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