Mesh Panel
Mesh panel with smooth surface and firm structure is made of high-quality low carbon steel, stainless steel and aluminum alloy steel. Its surface treatment includes PVC coated, PVC praying, hot-dipped galvanized and electric galvanized. The PVC coated and galvanized surfaces have good corrosion resistance and weather resistance, so it can provide a long service life. The common size of panel usually is 1800 mm × 3000 mm, we also accept other sizes for customers' needs.
Mesh Panel,Black Wire Mesh Panel,Galvanized Wire Mesh Panel,Reinforcing Welded Mesh Panel HENGSHUI YUZHENG IMPORT AND EXPORT CO., LTD. , https://www.yuzhengnails.com
Extruder has a great influence on thermoforming of plastic sheets
Plastic extruders are one of the types of plastic machinery, and the extruder has an effect on the plastic sheet during use. The specific impact is as follows:
1 The thickness tolerance of the extruder makes the thickness of the plastic sheet uneven, the thickness tolerance of the raw material manufacturing part is about ±5%, the tolerance percentage of the thickness less than 2mm is slightly larger, and the thickness is slightly smaller than 5mm. If a large number of thermoformed materials are produced, tighter tolerance values ​​should be used. The advanced extruder line features an automatic thickness feedback control system for films with thicknesses from 0.25 to 1.0 mm with a thickness tolerance of ±0.005 mm.
2 If the melt temperature of the extrudate is too low or the calender rolls are too cold, the smooth surface of the sheet may become rough or orange peel when heated on a thermoforming machine.
A too high traction speed results in a high degree of orientation in the longitudinal direction.
The very low internal stress in the 4 sheets causes the product to collapse when heated.
5 too large a melt mark forms a mark on the calender roll, such as a regular horizontal stripe on the film or sheet.
6 The slight scribe line created by the hang on the extruder head swells when the sheet is heated.