Pearl cotton is composed of numerous independent bubbles produced by physical foaming of low-density polyethylene resin. It is a new type of environmentally friendly packaging material. Ordinary EPE pearl cotton has a wide range of applications, and the general color is white. The production is divided according to the density standard. The higher the density, the higher the price. Ordinary EPE pearl cotton has many characteristics such as water and moisture resistance, sound insulation, heat preservation, strong toughness, recycling, and strong impact resistance. , is a new material. With the continuous development and application of various products, the market of pearl cotton is becoming more and more extensive.
After recovery, the pearl cotton is crushed and sent to the hopper. After high temperature, hot melting, extrusion, cooling, dicing and other processes, the pearl cotton regeneration granulation is produced. Due to the invasion of different environmental factors during use, its own performance will decline, and the color will gradually change from the original white light to brown or even dull yellow. Without improving the whiteness, shade and brightness of the pearl cotton recycled granulation, it is impossible to meet the requirements of the end customers of pearl cotton production. Therefore, pearl cotton regenerated granulation manufacturers will choose to add various additives to improve the whiteness and brightness of granulation. The brighteners used on foamed cotton include OB, FP-127, KCB, etc.
Most of the pearl cotton generally used in express packaging is a one-time product, which is lost after dismantling and express delivery. Therefore, we will not pay too much attention to the weather resistance of the product. It is recommended to use the more cost-effective fluorescent whitening agent FP-127. In harsh environments such as sound insulation pads, thermal insulation pads, moisture-proof pads, etc., the whitening agent KCB with better weather resistance is recommended, and the traditional whitening auxiliary KCB is used in low-density polyethylene resin foaming pearl cotton with good whitening effect. , high weather resistance, but the price is expensive, and even rising all the way. After research and development, our company has provided an improved version of fluorescent whitening agent KCB for plastic recycling granulation manufacturers. A variety of products and application technical support are provided specifically for regenerated granulation with different degrees of yellowing.
Post time: Feb-09-2022