Currently, there are many manufacturers producing PP sheets on the market, and the quality of the products varies among them. With so many manufacturers to choose from, how can we select the right PP plastic sheets? How do we identify the quality of the sheets from different manufacturers? Today,hebei Zhihong Plastic Sheet Factory will explain how to distinguish the quality of sheets from different manufacturers. Let’s take a closer look.
PP plastic sheets are semi-crystalline materials that are harder than PE sheets, with higher melting points and stronger impact resistance. When purchasing, the first thing to inquire about is the quality of the sheets, followed by the price. The factors that affect the price mainly depend on the quality of the sheets themselves. Therefore, it is recommended to purchase from large plastic sheet manufacturers, which can help resolve issues related to both quality and price.
- Surface Gloss: Check the surface gloss of the sheet. Sheets with poor gloss are made from recycled plastic.
- 密度: The density of PP plastic sheets is between 0.92 and 0.93. Sheets that float on the surface of water are made from raw polypropylene.
- Light Transmission: Recycled plastic has poor light transmission.
- Density Check: Throw the sheet into water to see if it floats. Most recycled sheets sink to the bottom.
PP plastic sheets have a high crystallinity, which gives them excellent surface rigidity and scratch resistance, and they do not suffer from environmental stress cracking. Typically, the sheets are modified by adding glass fiber, metal additives, or thermoplastic elastomers. The flow rate (MFR) of the material is usually in the range of 1 to 40, with low MFR materials having better impact resistance but lower elongation strength.
Currently, PP plastic sheets are still quite popular in the market, and their features are particularly prominent in ultra-high molecular weight polyethylene, which is an engineered plastic with excellent properties, such as high wear resistance, impact resistance, low friction coefficient, good self-lubricating properties, and excellent low-temperature resistance and chemical corrosion resistance.
Therefore, when making a purchase, it is advisable to choose a large manufacturer, as they select high-quality materials for the production of the sheets, which ensures good quality. The methods for identifying the quality of plastic sheets mentioned above can help you distinguish the quality of PP plastic sheets during your purchase.
