Rotomolding mold is a production process in which thermoplastic pellets are heated to the softening point and then extruded to produce products of various shapes.

In this process, the quality of raw materials is crucial, which is directly related to the quality and performance of the finished product.

Therefore, the raw materials of rotomolding mold must meet a series of standard requirements, let's take a look in detail below.

1. Selection of raw materials

The raw materials of rotomolding mold are all selected from thermoplastic particles, which are of various types, such as polypropylene, polyvinyl chloride, polycarbonate, and so on.

Different types of thermoplastic particles have different properties in melting and extruding,

Therefore, special attention must be paid when selecting raw materials, which should be selected according to different product performance requirements.

2. The quality of raw materials

The quality of raw materials is an important basis for manufacturing good products.

The raw materials of the rotomolding mold should have excellent properties such as maintaining a certain humidity range, high-temperature resistance, water and moisture resistance, pollution resistance, and non-toxicity.

At the same time, due to the certain decomposition reaction of thermoplastics in the production process,

Therefore, the molecular weight and distribution range of raw materials must be well controlled to ensure the quality of the product.

3. The processing method of raw materials

The raw material handling method of rotomolding mold is one of the keys.

In general, thermoplastic pellets require pretreatment,

This can increase the fluidity and extrusion performance of raw materials, and avoid problems such as bubbles and shrinkage when manufacturing products.

For different types of raw materials, the pretreatment methods will also be different, which can be adjusted by introducing chemical substances such as additives and improvers.

4. Measuring standards of raw materials

The product quality of roto-molding mold is greatly affected by raw materials, and the quality of raw materials should be determined according to different manufacturers and products.

For example, characteristic parameters such as viscosity, appearance, density, and fluidity of raw materials should be measured to ensure that the performance of raw materials meets the requirements for use.

In addition, regular inspections, random inspections, etc. should be adopted to evaluate the quality of raw materials, and measures should be taken in time if any unqualified situation occurs.

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