ODM PVC masterbatch manufacturer and exporter

PVC (polyvinyl chloride) is a plastic material widely used in various fields, its products include building materials, wire and cable, pipes, medical equipment and so on. As an important part of PVC products, the quality of PVC masterbatch directly affects the performance and appearance of the final product. Therefore, it is very important to control the quality of PVC masterbatch from the source. This paper will focus on the production and testing of PVC masterbatch, in order to provide reference for related enterprises.

First, the production of PVC masterbatch
Raw material selection
The main raw materials of PVC masterbatch include PVC resin, pigment, dispersant, stabilizer and so on. The quality of raw materials directly affects the performance of PVC masterbatch, therefore, the selection of high-quality raw materials is the premise of ensuring the quality of PVC masterbatch.
Formula design
Reasonable formula design is the key to ensure the quality of PVC masterbatch. The formulation design should fully consider the use of the product environment, performance requirements, processing technology and other factors, select the appropriate pigment, dispersant, stabilizer and other additives, and determine the proportion of its addition.
Preparation technology
The preparation process of PVC masterbatch mainly includes pigment pre-dispersion, resin mixing, extrusion granulation and other steps. In the preparation process, the temperature, humidity, screw speed and other process parameters should be strictly controlled to ensure the quality of PVC masterbatch.
Postprocessing
In order to ensure the stable performance of the PVC masterbatch, it is usually necessary to post-process the product after granulation, such as drying, screening, etc. In the post-treatment process, conditions such as temperature and humidity should be strictly controlled to avoid moisture and pollution of the color masterbatch.
Second, the detection of PVC masterbatch
Appearance detection
Appearance detection is an important means to judge the quality of PVC masterbatch. By observing the appearance characteristics of color, shape, surface gloss and so on, the quality of the color masterbatch can be preliminatively judged. The color masterbatch with unqualified appearance often has problems with its internal quality.
Performance test
Performance testing mainly includes physical properties, chemical properties and processing properties testing. Physical properties include specific gravity, melting index, tensile strength, etc. Chemical performance test includes weather resistance, chemical corrosion resistance, etc. The processing performance test includes melt fluidity, thermal stability, etc. Through performance testing, the quality of PVC masterbatch can be comprehensively evaluated.
Microstructure detection
The microstructure detection mainly includes scanning electron microscopy (SEM) and transmission electron microscopy (TEM). By observing the microstructure of the PVC masterbatch, the dispersion of the pigment in the resin can be understood, so as to judge the quality of the masterbatch.
Environmental protection testing
With the continuous improvement of environmental awareness, the environmental performance of PVC masterbatch has also attracted more and more attention. Environmental protection detection mainly includes heavy metal content, harmful substances release and so on. Through environmental testing, you can ensure that the PVC masterbatch meets the relevant regulations and standards.
Third, quality control measures
Strict acceptance of raw materials
Strict acceptance of raw materials to ensure that their quality meets national standards and enterprise requirements. For unqualified raw materials, timely return or replacement.
Strengthen process control
In the production process, it is necessary to strictly implement the process regulations, strengthen the process monitoring, and ensure the quality and stability of each link. At the same time, it is necessary to strengthen the maintenance of equipment to ensure the normal operation of equipment.

Improve staff quality
Strengthen the training and education of employees to improve their quality awareness and operational skills. Employees should be familiar with the production process and testing methods of PVC masterbatches, and be able to find and deal with quality problems in time.
Establish and improve the quality management system
Enterprises should establish a sound quality management system and strictly control production, testing, sales and other links. Through continuous improvement, the quality of PVC masterbatch is continuously improved.
In short, controlling the quality of PVC masterbatches from the source is the key to ensuring the performance and appearance of the final product. Enterprises should pay attention to the selection of raw materials, formula design, preparation process and post-treatment, strengthen testing methods, strictly implement the quality management system, and constantly improve product quality. At the same time, we should pay attention to environmental protection requirements, produce products that meet regulations and standards, and contribute to the development of the plastics industry.