SKYGREEN Korea SK PETG Plastic Raw MaterialsIntroduction:The hot market has also occupied the entire market with the melt blown fabric special material PP, and now the plastic raw materials for helmets and safety helmets have emerged one after another to take advantage of the heat! Although these two types of materials are currently in high demand, today we are discussing traditional PETG and PCTG plastic raw materials from Eastman in the United States and SK in South Korea! With the recovery and stabilization of domestic industry, economy, and life, people's living needs and social development stability need to keep up with other materials and industries.
Simply put, PETG plastic is a highly transparent, non-toxic, and non double A super tough chemical resistant plastic raw material, belonging to a non crystalline copolymer polyester. The performance of PETG differs greatly from PET, PCT, and PC due to its unique characteristics. So far, there are two companies in the world, Eastman from the United States and SK from South Korea, with mature technology, wide performance, and high usage! The cost-effectiveness of raw materials for Eastman PETG and South Korean SK PETG is unmatched by other competitors. However, with the increase of CHDM (a white waxy solid) in the copolymer, its melting point also decreases, the glass transition temperature increases, and the crystallinity decreases. However, this also facilitates the processing speed of manufacturers and improves production efficiency. So, what is the appropriate amount of CHDM in PETG,
SSKYGREEN Korea SK PETG Plastic Raw MaterialIt has a slightly high viscosity, high transparency, and comes in two colors: blue and white. It is suitable for different products to meet different customer requirements, is resistant to chemical agents, and has special stress whitening ability. It can fold and impact without whitening. Greatly improved its production, processing, and molding efficiency. Viscosity is better than acid PMMA (acrylic). PETG's processed products have high transparency, good toughness, and strong corrosion resistance! So it is a good material for many cosmetic packaging and pharmaceutical bottles. Good cold resistance, suitable for food packaging and cold beverage quick freezing leftovers! Select suitable thick walled and thin-walled transparent products based on the melting rate, and various structures are suitable for application. Capable of designing and producing various shapes according to the needs of manufacturers and end customers.
SKYGREEN K2012 PETG has good chemical resistance and processability; Construction of buildings; Cosmetics;
SKYGREEN S2008 PETG has good chemical resistance and processability for building applications; Cosmetics;
SKYGREEN J2003 PCTG has good chemical resistance and processability for building applications; Cosmetics;
SKYGREEN PN100 PETG has good chemical resistance and processability; Electronic appliances; Building applications; Cosmetics;
SKYGREEN SF200 PETG has good chemical resistance and processability; Electronic appliances; Building applications; Cosmetics;
SKYGREEN P-SF PETG has good chemical resistance and processability; Electronic appliances; Building applications; Cosmetics;
The processing methods are also commonly used in production plants for extrusion, injection molding, blow molding, and vacuum forming. They can be widely used in production plants for extruded sheet materials, high-performance shrink films, blow molding, and injection molded profiles. Moreover, they have excellent recyclability and stable reprocessing performance, and can meet the requirements of conventional machining and modification.
SKYGREEN Korea SK PETG Plastic Raw MaterialsProduction process and suggested processing parameters:
Drying method: Dehumidification dryer or hot air circulation drying machine, the drying temperature can be adjusted between 65-70 degrees, and the drying time is 4 to 6 hours.
Temperature regulation of material barrel (refer to the table below for the temperature setting of the injection molding machine barrel nozzle. It should be noted that the actual processing temperature should be consistent with the temperature requirements set by the equipment):
*Products made from PETG and PCTG materials with low processing temperature and short residence time in the barrel (within five minutes) under the same conditions have good physical properties;
*During production, the processing is carried out according to the specific temperature of the rubber material. The normal temperature range for PETG is 180-230 degrees, and for PCTG it is 230-270 degrees;
*Mold temperature: The water mold temperature is adjusted between 15-40 ℃. (When the mold temperature rises, the product may experience defects such as warping, deformation, brittleness, yellowing, etc.)
*Screw speed: A lower screw speed can prevent the temperature of the rubber material from being too high. It is recommended to choose 60-90RPM;
*Back pressure: Appropriate back pressure can enhance the plasticization of the rubber material and help with exhaust function. It is recommended to choose 5-10kgf/cm2;
*Cleaning machine: Before using Z-polyester, be sure to use a transparent PC material cleaning machine; After using Z-polyester, materials such as Yajiali and PS can be used for cleaning.
Cooling time: This material has a slow cooling rate and medium viscosity. The appropriate temperature and molding cooling time should be set according to the mold structure and product thickness. The demolding angle of the main gate should be designed at 3-5 °, otherwise the nozzle is prone to sticking to the mold.
SKYGREEN Korea SK PETG Plastic Raw MaterialsThe material advantages include good scratch resistance, good toughness, strong fluidity, high transparency, easy processing and molding.
