GPPS Raw Material, Virgin&Recycled GPPS for Extrusion

  • Model NO.: gpps extrusion grade
  • Usage: General Plastics
  • Plastic Forming Method: Injection
  • Transport Package: 25kg/Bag, 20ton/FCL
  • Origin: China
  • Material: General Purpose Polystyrene/GPPS
  • Plastic Properties After Heated: Thermoplastic Plastics
  • Color: White
  • Specification: GPPS 525
  • HS Code: 3903199000
GPPS: General Purpose Polystyrene

Physical and Chemical Properties
Appearance : Clear pellets
Solubility in water: Insoluble
Density: 1.04-1.111 g/cm3 (20 C)
Usage: Common commercial polymer.
 GPPS Raw Material, Virgin&Recycled GPPS for Extrusion

GPPS Raw Material, Virgin&Recycled GPPS for Extrusion
GPPS Raw Material, Virgin&Recycled GPPS for Extrusion
GPPS Raw Material, Virgin&Recycled GPPS for Extrusion

Introduction of GPPS:
General Purpose Polystyrene is a kind of thermoplastic resin, is a colorless, odorless, tasteless, shiny, transparent beaded or granular solid. Density is 1.04 to 1.09, transparency is 88% to 92%, refractive index is 1.59 to 1.60. In the stress function, resulting in birefringence, the so-called stress - optical effect. Product of the melting temperature is 150 to 180 ° C, thermal decomposition temperature is 300 ° C, the heat distortion temperature is 70 to 100 ° C, long-term use temperature is 60 ~ 80 °C
Specification of GPPS Resin:

Test conditions Test method Test data unit
Density    ISO 1183:1987 1040 kg/m3
Water absorption   ISO 62:1999 <0.1 %
Melt flow rate 200°C/5kg ISO 1133:1997 3.8 cm3/10min
Process shrinkage   ISO 294-4:1997 0.4-0.6 %
Charpy impact strength  1eU ISO 179:1993 15 kj/m2
Tensile modulus 1mm/min ISO 527-2:1993 3300 MPa
Elongation  50mm/min ISO 527-2:1993 3 %
Tensile strength at break 50mm/min ISO 527-2:1993 55 MPa
Ball indentation hardness H 358N/30s ISO 2039-1:1993 150 N/mm2
Bending strength 2mm/min ISO 178:1993 100 MPa
HDT 1.8MPa ISO 75-2:1993 84 °C
Linear coefficient of thermal expansion (23-80)°C DIN 53 752 0.8-1.0 K-1
Heat conduction   DIN 52 612 0.16 W/mK
Vicat softening point B50/oil ISO 306:1994 93 °C


Testing standards
Test Conditions
Units PG-22 PG-33 PG-80 PG-80N
Melt flow index
D-1238 200°C*5kg g/10min. 17.5 7.4 4.0 5.7
Softening point
D-1525 1kg. °C 87.0 94.0 97.7 97.6
Tensile strength
D-638   Kg/cm² 420 470 500 490
Tensile modulus
D-638 -   26460 26220 26720 26720
Bending strength
D-790 - Kg/cm² 540 670 690 690
Flexural modulus
D-790   Kg/cm² 31000 31000 31000 31000
Heat distortion temperature
D-648 - °C 75 79 81 81
Use - - -  
Mixed leveling
Injection level
Injection level
Injection level

 Handling and Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and 
1 Packing: 25kg/pp bag, 25kg/paper bag, 1000kg/jumbo bag, 500kg/super sack
2 Loading: 17mt per 20 foot container
3 Loading Port: Any China Port
4 Lead time: 20days
1 OEM Service
2 Any packing is aviable 
3 Any port for loading is work
4 Your inquiry will get response within 4 hours
5 SGS certificate could be support
Free samples for evaluation
The charge of samples postage will be reduced from the first order.
Payment: TT, LC, DP, DA, Western Union
Partial Shipment is allowed
Company introduction:
We are one of largest & professional exporter in North of China. Now, our market could cover Asia, Europe, American, ....
We hope to service for more customers with our professional skills and acknowledge.

High Purity Water System

Purified water  System One of the basic considerations in the design of a system is the type of product that is to be manufactured. For parenteral products where there is a concern for pyrogens, it is expected that Water for Injection will be used. This applies to the formulation of products, as well as to the final washing of components and equipment used in their manufacture. Distillation and Reverse Osmosis (RO) filtration are the only acceptable methods listed in the USP for producing Water for Injection. However, in the bulk Pharmaceutical and Biotechnology industries and some foreign companies, Ultra Filtration (UF) is employed to minimize endotoxins in those drug substances that are administered parenterally.

For some ophthalmic products, such as the ophthalmic irrigating solution, and some inhalation products, such as Sterile Water for Inhalation, where there are pyrogen specifications, it is expected that Water for Injection be used in their formulation. However, for most inhalation and ophthalmic products, purified water is used in their formulation. This also applies to topicals, cosmetics and oral products.

Another design consideration is the temperature of the system. It is recognized that hot (65 – 80℃) systems are self sanitizing. While the cost of other systems may be less expensive for a company, the cost of maintenance, testing and potential problems may be greater than the cost of energy saved.

Whether a system is circulating or one-way is also an important design consideration. Obviously, water in constant motion is less liable to have high levels of contaminant. A one-way water system is basically a "dead-leg".

Finally, and possibly the most important consideration, is the risk assessment or level of quality that is desired. It should be recognized that different products require different quality waters. Parenterals require very pure water with no endotoxins. Topical and oral products require less pure water and do not have a requirement for endotoxins. Even with topical and oral products there are factors that dictate different qualities for water. For example, preservatives in antacids are marginally effective, so more stringent microbial limits have to be set. The quality control department should assess each product manufactured with the water from their system and determine the microbial action limits based on the most microbial sensitive product. In lieu of stringent water action limits in the system the manufacturer can add a microbial reduction step in the manufacturing process for the sensitive drug product(s).

High Purity Water System,Injection purified water system,Pharmaceutical ultrapure water systems,Laboratory ultrapure water system

Jiangmen Leonard Industrial Machineries Co., Ltd. ,