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Molded pulp type and four unique applications


随着全球塑料禁令的兴起,纸浆模塑已被公认为世界上塑料包装最环保的替代品。纸浆模塑是用于通过使用植物纤维与水和助剂在一定压力下通过特定的模具形成纸浆模塑产品然后干燥和成形来制造纸浆模塑产品的加工方法。因此,整个生产过程不会产生任何污染物,这属于物理形态变化的过程。纸浆模塑产品也是环保和可回收的。丢弃后,它们可以在短时间内自然降解。它是一种典型的绿色包装产品。



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According to Goldstein Research, the global green packaging market in 2016 was worth $139.09 billion. It is expected to reach $230.19 billion by 2024 and grow at a compound annual growth rate of 6.50% during the forecast period. Although in daily life, most of us only know that molded fibers are associated with electronic packaging and egg trays, it has become a sustainable resource for a variety of major and secondary applications across industries. As molding technology continues to evolve, applications become more complex.


Before studying various applications, we first need to have a general understanding of the type of molded pulp.


Molded pulp type

Molded pulp can be classified into the following four types depending on the manufacturing process, the type of raw materials used, and the use.


1, Thick-Walled Pulp

Thick-walled pulp is the thickest molded pulp used for manufacturing packaging products for shipping and transportation. It is primarily composed of scrap and kraft paper and cardboard. The products usually have an unfinished surface on one side, with a moderately finished one on the other. The thick and rustic profile makes it the ideal application for making edge protectors for heavy equipment.


2, Transfer Molded Pulp

Transfer molded pulp is slightly thinner compared to the thick-walled variety. As the pulp is transferred from one mold to another during the manufacturing process, it is called transfer molded pulp. As a result, both sides are finished properly, which renders them a polished look and texture. It is perhaps the most popular type of molded pulp out there. The most common applications include egg trays, fruit and vegetable trays, slipper pans, wine shippers, and end caps.


3, Thermoformed Fiber Pulp

The manufacturing process of the thermoformed fiber involves the use of a heated mold, that is, directly heating and drying the product in the mold, and controlling the drying process conditions during drying to ensure the density, stiffness and strength of the product after drying, and overall ensuring the quality of the product. Because of the ultra-high appearance of the articles after thermoforming, they are commonly used to make delicate molded tableware such as dishes, plates, cups and soup bowls.


4, Processed Pulp

As the name suggests, processed pulp undergoes secondary processing such as coating, printing, hot pressing, trimming, and an addition of special slurry additives. As the finished products possess similar properties to expanded polystyrene, processed pulp makes an excellent cushioning material.


Pulp molding application

Through the understanding of the classification of molded pulp, we have a preliminary understanding of the division of molded pulp, the following is an in-depth study of the specific application of molded pulp in life.


1, Containers generally refer to fast cutlery, derived from the manufacturing process of thermoformed fibers.

At present, it is mainly used in lunch boxes, instant noodle bowls, snack trays, dishes, etc. These containers not only have a smooth surface and exquisite appearance, but also have the characteristics of heat insulation, water and oil proof, pressure resistance, biodegradation and recycling.


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2, Disk class

Bottle trays, pulp molded bottle holders do not need to be disassembled, can save packing time, and the overall bottle holder can reduce the breakage rate, which is mainly used for positioning buffers of various beverage bottles, wine bottles, cans, etc. Its nested design also helps save space and significantly reduces transportation costs.


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Egg tray, pulp molded egg tray with loose material and unique egg-shaped curved structure, so it has better cushioning, breathability and freshness preservation. It is mostly used for large-scale transportation and packaging of poultry and eggs, and is matched with corrugated boxes. use.


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Fruit trays, pulp molded fruit trays can be molded into trays of fruit curved structures for use as liners. It has the maximum shock absorption effect and prevents moisture penetration and has certain shock absorption performance. It can avoid the damage between the fruits. It can also radiate the heat of the fruit, absorb the evaporated water, inhibit the ethylene concentration, and prevent the fruit from decaying. To extend the shelf life of the fruit. It can be used for packaging of pears, apples, citrus, pineapples, peaches, apricots, tomatoes, etc.


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In addition, the agricultural tray also plays a significant role in the preservation of the agricultural products and the survival rate of the seedlings.


3, shield class

纸浆模塑制品可用作农作物的苗圃,花卉和幼苗的覆盖物,蚕的正方形以及食品,蔬菜和新鲜肉类的包装。如果将花朵和农作物种植在通过纸浆模塑制成的营养钵中,它们可以在存活后进行移植,并且营养粉可以自然降解。


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4,工业缓冲包装

纸浆模塑具有出色的工业产品成型能力。许多家用电器,机电产品,电子产品等的保形轮廓和“支柱,弹性,缓冲”设计可以有效地保护这些产品。主要用于精密仪器,玻璃制品,电子电器产品,工艺品等的定位缓冲包装。


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