Dushanzi GPPS-500NT | High Rigidity & High Transparency for Transparent Plastic Applications

Product Overview

Dushanzi GPPS-500NT is a standout product in the general purpose polystyrene (GPPS) market. Originating from Dushanzi, a well-known production base, it is engineered to meet the demanding requirements of various industries. GPPS is an amorphous transparent thermoplastic polymer with high surface gloss and rigid property. The 500NT grade is specifically formulated to provide excellent transparency and rigid mechanical properties, making it a top choice for applications such as transparent packaging, stationery and lamp covers. Its wide range of uses spans across multiple sectors, including food packaging, daily consumer goods, lighting and electronic parts, due to its crystal clear appearance and stable long-term processing performance.

Basic Product Specifications

• Item	Specification
  Material	General Purpose Polystyrene (GPPS)
  Grade	Transparent Injection & Extrusion Grade
  Processing Temperature	190 - 230 °C
  Density	1.04 - 1.06 g/cm³
  Light Transmittance	89% - 92%
  Vicat Softening Point	98 - 104 °C
  MFR (200℃/5kg)	4.8 - 5.2 g/10min (Official physical data of Dushanzi Kunlun GPPS-500NT)
  Molding Fluidity	Balanced melt flow, suitable for thin-wall molding

Core Product Advantages

High Rigidity GPPS for Thin-Wall Transparent Products

GPPS-500NT resists light external forces and holds its structure during assembly and handling. Its stiffness allows thinner wall designs without losing strength. Compared with general GPPS grades, its faster melt solidification helps shorten molding cycles under standardized production parameters. Supporting data is available on request via the official COA, test reports and customer trial records.

Chemical Resistance for Food Packaging Containers

This GPPS grade resists mild daily chemicals, including weak acids, weak alkalis, beverages and salt solutions. Containers stay clear without fogging, corrosion or surface whitening, and need no secondary polishing.

Good Moldability for Injection and Sheet Extrusion

GPPS-500NT fills mold cavities evenly. After proper drying, it gives parts free of flow marks and silver lines, even in thin-wall or irregular shapes. Lower residual stress reduces cracking and keeps dimensions stable over time.

High Light Transmittance and Glossy Surface

Parts show crystal-clear visibility and a smooth, glossy finish. In food packaging and cosmetic shells, this displays contents and printed patterns clearly. The smooth surface resists impurity adhesion and reduces post-production cleaning.

Main Application Fields of Dushanzi GPPS-500NT

• Food Packaging

  Ideal for transparent GPPS disposable cups, food boxes and packaging lids. High clarity and a glossy surface display the contents clearly, and good chemical resistance to beverages and mild food substances keeps containers clean and unfogged.

  Daily Stationery

  Used for transparent rulers, pen shells and storage boxes. High rigidity keeps stationery products firm and neat, and the crystal-clear finish gives them a polished look.

  Lighting Components

  Suitable for indoor lamp shades and decorative light covers. High light transmittance helps light pass through evenly, while the smooth, glossy surface gives lighting parts a clean appearance.

  Electronic Accessories

  Can be used for transparent small appliance casings and other electronic accessories. Stable molding performance and low residual stress help keep parts dimensionally stable.

  Extruded Sheets

  Applied in transparent GPPS sheets for vacuum forming packaging. Good sheet extrusion performance supports clear, even sheets for thermoformed trays, covers and display packaging.

Quality Assurance & Supply Service

We guarantee the quality of Dushanzi GPPS-500NT through a strict quality control system. Each batch of products undergoes multiple tests including MFR, transmittance and Vicat softening point to ensure that it meets international and industry plastic standards. We also offer a stable supply service, with sufficient inventory to meet your large-scale and long-term production needs. Our professional after-sales team is ready to provide you with technical support and processing parameter solutions at any time.

Frequently Asked Questions

Q1: What is the MFR range of Dushanzi GPPS-500NT?

A: The melt flow rate is 7.0–9.0 g/10min under test condition 200℃/5kg. Our technical team can provide specific processing parameters based on your product mold requirements.

Q2: Can Dushanzi GPPS-500NT be used for food contact packaging?

A: Yes, it meets the relevant food-contact safety standards and can be safely used for disposable food containers and transparent packaging.

Q3: How long is the service life of products made from Dushanzi GPPS-500NT under indoor use?

A: This resin features an ultra-low yellow index of -0.2 after production. Under standard indoor storage and service environments with limited UV radiation, the transparent appearance maintains stable visual performance for long-term use. Relevant anti-yellowing aging test data following GB/T 16422 standard is available for verification.

Q4: What molding processes are compatible with Dushanzi GPPS-500NT?

A: We support injection molding and transparent sheet extrusion to produce various transparent plastic products. You can contact us for specific mold matching suggestions.

Q5: Is special drying equipment required for Dushanzi GPPS-500NT pellets before molding?

A: Standard hot air drying oven is sufficient, special equipment is generally not required. Our processing guide can provide detailed drying time and temperature instructions.

Product Summary

Dushanzi GPPS-500NT is a high-quality general purpose polystyrene resin that combines multiple excellent properties such as high rigidity, daily chemical resistance, good moldability, high light transmittance and high surface gloss. It is suitable for a wide range of transparent plastic applications in various industries, offering long-term stable transparency and cost-effectiveness. With strict quality control and a stable supply service, it is the ideal choice for your transparent product manufacturing projects. Whether you are producing large-scale food packaging sheets or small-scale transparent stationery parts, Dushanzi GPPS-500NT can meet your needs. If you need to learn more about the product or obtain a quote, please contact us.