Title: PVC different problems that ex
Description: Domestic PVC profiles of raw materials in recent years a sharp rise in the plastic profile doors and windows prices all the way down due to oversupply of plastic doors and windows on the market today, most of its production at a loss. Placed in front of the business of plastic doors and windows only effective way out is through new highly efficient, low-lead, non-toxic, anti-bacterial formula aids the development application, to replace the original inefficient, toxic formulation additives to enhance the performance of products, documents, forming different specialty products, and thus distance themselves from price, to meet different climatic areas, the construction of the different grades and consumer groups.
Today PVC ceiling panels continue to stabilize, although the commodity markets continued to weaken today, but little impact in the current trader mentality around the offer remained stable, but wait and see mood still continues. Signs of recovery in the downstream demand, may be related to the upcoming season, but single appeared much thinly traded. The mainstream quotations of domestic calcium carbide process PVC market in 7325-7375 yuan / ton ethylene PVC mainstream market quotations are temporarily stable in 7450-7575 yuan / ton.
Hard PVC plastic profiles, there is the disadvantage of poor impact resistance, are often modified to add the ACR, CPE, EVA, MBS, etc. to improve the impact strength. CPE (chlorinated polyethylene), EVA (ethylene - vinyl acetate copolymer), the scooter motorcycle (acrylate), MBS (methyl methacrylate - butadiene - styrene graft copolymer) is generally the amount of 6% ~ 10%. MBS mainly used for the transparent plastic profile products, the EVA is best not shared with the lead stabilizer, sharing when forming workability is poor, but also easy to play a pink spot, the CPE is best not shared with zinc stabilizer, and the CPE is not very good low temperature resistance . The plastic profile production of plastic profile products, control of process conditions such as temperature, screw speed, traction speed.
Market competition of plastic door and window industry, forcing manufacturers to continue to develop new technology, the efficient production of rascador , low power, low capital products. The main development trend of traditional methods of material handling automation PVC material handling is the use of artificial ingredients, hot mix, cold mix, transmission. In recent years, rigid PVC profile extrusion industry into the high-speed development period, the size of the business continues to expand, this situation, the traditional material handling methods can not meet the needs of mass production, material handling automation has become a trend. Material handling automation refers to computer-controlled automatic batching system, supplemented by pneumatic conveying, combined with hot and cold mixer, so as to constitute a complete set of PVC ingredients, mixing product line. This technology introduced into China from the mid-1980s, and in some large enterprises with certain scale applications. The advantage of this technology lies in the ingredients of high precision, high production efficiency, less pollution, and can meet the needs of high-volume extrusion.
In recent years, low foam extrusion of rigid car diagnostic tool in the world have developed rapidly. One of the main fields of application of rigid PVC low foaming extrusion is door and window profiles. The main advantage of these products is one, saving raw material consumption; Second, the products within the residual stress is very small, good dimensional stability;, noise, and excellent thermal insulation properties.
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