Chimei GPPS PG33 | High Transparency & Chemical Resistance for Various Applications

Product Overview

Chimei GPPS PG33 is a high - performance general - purpose polystyrene (GPPS) product. It is produced by Chimei, a company with a strong reputation in the chemical industry. This material is crafted through advanced processes to ensure a balance of multiple excellent properties. With its high transparency, it can be used to make various transparent or semi - transparent products. Its good chemical resistance allows it to withstand the erosion of many common chemicals, and the stable dimensional performance ensures the accuracy of the final product size. It is widely used in industries such as toys, packaging, lighting, and household items, meeting the needs of different applications.

Basic Product Specifications

Melt Flow Rate: 7.5 - 8.5 g/10 min (200℃/5kg ASTM D1238)
Tensile Strength: 470 - 490 kg/cm²
Flexural Strength: 670 - 750 kg/cm²
Tensile Elongation: 2.0%
Heat Distortion Temperature (1.8MPa Unannealed): 76 - 87°C
Density: 1.05 g/cm³
Flammability Rating: UL94 HB

Core Product Advantages

High Transparency

Chimei GPPS PG33 offers outstanding transparency, which is crucial for applications where visibility is required. In the lighting industry, it can be used to make lamp shades and light covers, providing excellent light transmission and creating a soft and uniform lighting effect. In the packaging industry, it allows consumers to clearly see the products inside, enhancing the attractiveness of the goods. For example, in food packaging, the high-transparency feature can make the food look more appealing and fresh, increasing consumer desire to purchase. Moreover, in the toy industry, transparent parts made of this material can show the internal structure of the toy, adding to the fun and educational value.

Good Chemical Resistance

This material has good resistance to many common chemicals. In the packaging of chemicals or products that may come into contact with chemicals, it can prevent the material from being corroded or damaged by chemicals, ensuring the integrity and stability of the packaging. For instance, in the packaging of some cleaning agents or cosmetics, it can effectively resist the erosion of these substances. In the household items field, such as soap boxes or storage containers for chemical-containing items, it can maintain its performance over a long period, preventing the container from deforming or losing its function due to chemical exposure.

Stable Dimensional Performance

The dimensional stability of Chimei GPPS PG33 is very reliable. During the injection-molding process, it has a low shrinkage rate, which means that the size of the final product will be very close to the design size. This is particularly important for products with strict size requirements, such as electronic components and precision toys. For example, in the production of electronic device casings, stable dimensions ensure a proper fit with other components, improving the overall performance and reliability of the device. In the toy industry, it can ensure that the parts of the toy fit together precisely, providing a better playing experience.

Compliance with Environmental Standards

Chimei GPPS PG33 is compliant with RoHS, REACH, and other international environmental standards. This makes it a more environmentally friendly choice for manufacturers. In the current market where environmental protection is highly emphasized, products made from this material are more likely to meet the requirements of consumers and regulatory authorities. For example, in the production of toys and food packaging, the compliance with environmental standards can ensure the safety of users, especially for children and those who consume food. It also helps manufacturers to avoid potential legal risks and enhance their corporate image.

Main Application Fields

Toys: Transparent toy shells, building blocks, and other toy components.
Packaging: Food containers, disposable cups, cosmetic packaging, and general transparent product packaging.
Lighting: Lamp shades, decorative light covers, and lighting fixture housings.
Household Items: Transparent storage boxes, clear cutlery, and daily-use transparent containers.
Electronics: Transparent indicator lamp covers, small appliance transparent casings and insulating transparent parts.

Processing & Storage Guidelines

Processing: It is recommended to dry the material at 70 - 80°C for 2 - 3 hours before injection molding, especially if the raw material has been exposed to moisture. The barrel temperature gradient is controlled at rear zone 150–170°C, middle zone 175–195°C, nozzle 185–205°C, overall barrel temperature range 150 - 205°C, with different temperature settings for different sections. The mold temperature is preferably 40 - 70°C, and a low back-pressure (3 - 10 bar) should be used to prevent excessive shear heat. The screw speed should be set at a medium-low level to avoid over-shearing and resin thermal degradation.

Storage: Store in a dry and ventilated place, away from direct sunlight and heat sources. Keep the packaging sealed to prevent moisture absorption.

Quality Assurance & Supply Service

We guarantee the high - quality of Chimei GPPS PG33. Each batch of products undergoes strict quality inspections covering melt flow rate, mechanical properties and transparency to ensure that they meet the specified standards. We have a stable supply system, which can ensure a continuous supply of products to meet the needs of customers. Our professional technical team can provide customers with technical support, including processing parameter optimization and mold design suggestions. If there are any quality problems, we will provide timely after-sales service and replacement solutions.

Frequently Asked Questions

Q: Can Chimei GPPS PG33 be used for high - temperature applications? A: It has a general heat - resistance, and long - term use is not recommended above 80°C.
Q: Is it easy to color this material?A: Yes, it is easy to color. You can add color powder or color masterbatch to obtain various transparent or semi-transparent colors.
Q: Can it be in contact with food?A: It meets the food-contact standards and can be used for food containers and cutlery; it is not suitable for high-temperature microwave heating.
Q: What is the shelf life of this material?A: When stored properly in a dry and ventilated environment, it has a relatively long shelf life. However, it is recommended to use it within a reasonable time to ensure the best performance.
Q: Can it be recycled?A: Virgin PG-33 pellets and clean waste finished products are recyclable, which is in line with the global environmental protection trend.

Product Summary

Chimei GPPS PG33 is a versatile general - purpose polystyrene material. It combines high transparency, good chemical resistance, stable dimensional performance, and compliance with environmental standards. These features make it suitable for a wide range of applications in different industries, such as toys, packaging, lighting, and household items. Its excellent processing performance also allows manufacturers to produce products efficiently. Whether it is for creating attractive consumer products or ensuring the functionality of industrial components, Chimei GPPS PG33 is a reliable choice. If you need to learn more about this product or obtain a sample, please contact us.