GPPS 1084 is a specialized grade of General Purpose Polystyrene (GPPS), produced via continuous mass polymerization of styrene monomer. This resin is noted for its high molecular weight, medium melt strength, and excellent clarity and mechanical strength, making it particularly well-suited for injection molding applications.
 
Product Description
Manufacturing Process: Utilizes continuous mass polymerization, ensuring consistent and high-quality production.
Characteristics: High molecular weight contributes to the robustness of the final product, while medium melt strength facilitates easier processing during injection molding. The resin's good clarity and mechanical strength make it ideal for producing aesthetically pleasing and durable items.
 
Typical Applications
Food Contact Consumer Goods: GPPS 1084 is commonly used to produce consumer goods that require direct contact with food, such as cups and dishes, due to its safety and compliance with food contact regulations.
Injection Molding Applications: Specifically designed for injection molding processes, it is suitable for manufacturing complex shapes and designs with high precision and clarity.
 
Typical Physical and Mechanical Properties
Melt Flow Rate: 8 g/10min at 200°C & 5 kg load (ASTM D1238), indicating the resin's flowability under heat and pressure, which is crucial for consistent molding operations.
Tensile Strength: 50 MPa (ASTM D638), measuring the material's ability to withstand tension, essential for products that need to resist stretching or pulling forces.
Flexural Modulus: 3100 MPa (ASTM D790), which describes the material's stiffness or resistance to bending, important in maintaining shape integrity under stress.
Charpy Impact Strength (Unnotched): 10 KJ/m² (ASTM D256), showing the toughness of the material when subjected to sudden impacts, an important feature for consumer goods that may experience everyday drops or knocks.
Vicat Softening Point: 91°C at 120°C/hr with a 1 kg load (ASTM D1525), the temperature at which the material starts to soften, crucial for understanding the thermal limits of the product during use.
 
Packaging
Form: Supplied in cylindrical pellets approximately 2.5×2.5 mm in size, designed for easy handling and compatibility with standard industrial processing equipment.
Packaging Options: Available in 25 kg bags, which facilitates transportation, storage, and usage in industrial settings.
 
Regulatory Compliance
Food Safety: GPPS 1084 is formulated to meet the stringent requirements for materials in contact with food, ensuring that products made from this resin are safe for consumer use.
 
Summary
GPPS 1084 stands out as an optimal choice for manufacturers looking for a reliable polystyrene resin that combines high performance with aesthetic qualities. It is particularly valued in the food contact and consumer goods sector, where product safety, clarity, and mechanical strength are paramount. The specific properties of GPPS 1084, such as its melt flow rate and mechanical strength, make it highly effective for precise and high-quality injection molding processes, resulting in products that are both durable and visually appealing.