What is Pulp Molded Products?

2022-09-24 15:53:21

What is Pulp Molded Products?

Pulp molding is a three-dimensional papermaking technology. It uses paper as raw material, and a certain shape of paper products is molded by a special mold on a molding machine.

It has four major advantages: The raw material is waste paper, including cardboard, waste paper box paper, waste white edge paper, etc., and the source is wide; The production process is completed by pulping, adsorption molding, drying and shaping, which is harmless to the environment; It can be recycled and reused; the volume is smaller than that of foamed plastic, it can be overlapped, and the transportation is convenient. Pulp molding, in addition to lunch boxes and tableware, is also used for industrial buffer packaging, and is currently developing rapidly.

Features:

Including egg boxes, egg trays, fruit trays, flower pots, disposable medical bedpans, etc. It uses waste paper as raw material, adds some moisture-proofing agent (aluminum sulfate) or waterproofing agent, and then makes various shapes of model products according to different purposes, which are used as eggs, fruits, precision devices, fragile and fragile glass , packaging pads for ceramic products, handicrafts, etc., with good buffer protection performance. The production of pulp molding technology and equipment has developed rapidly. The basic process is pulp preparation, molding, drying and shaping.

Model products:

Pulp molded products are a new type of packaging material that has developed rapidly in recent years, and are an excellent substitute for wood. Pulp molding products adopt the manufacturing process of raw material beating - ingredients - molding - drying - setting. Since a large amount of water (about 55-60%) remains on the workpiece after compression molding, the moisture content of the final product is 12-14%, so during the drying process of the workpiece, it is necessary to remove about the weight of the workpiece. , this part of the water all depends on the absorption of heat into water vapor. Due to the phase change in the drying process, the energy consumption is very large, and the pulp molding products are processed into high energy consumption products. For this reason, it is very necessary to conduct a thermal analysis on the energy conversion process of its drying. Because, through the analysis, the design and processing of the drying equipment can be improved, and the utilization rate of energy can be improved, which is of great significance to reduce the production cost of the pulp molding product industry.

Application areas:

Pulp molded products are solid containers used to contain and restrict the packaged materials, and serve the circulation, storage and transportation of commodities, that is, they are mainly used in the transportation and packaging of commodities.