SHIJIAZHUANG HUATAO IMPORT AND EXPORT TRADE CO., LTD.

MDO Nip Rollers are an essential component in the film stretching process, specifically in Machine Direction Orientation (MDO) systems. These rollers play a crucial role in achieving uniform stretching and improving the mechanical properties of films.   Features of MDO Nip Rollers for Film Stretching Hardness Range: MDO Nip Rollers typically have a hardness range of 60 to 85 Shore A, ensuring optimal performance during the stretching process. Maximum Operating Temperature: These rollers can withstand high temperatures, with a maximum operating temperature of up to 250°C. Sizes: MDO Nip Rollers are available in various sizes, such as 800, 1000, 1300, 2300, and 2800 mm, to accommodate different film manufacturing lines. Excellent Resistance: They exhibit excellent resistance to ozone, heat, and abrasion, ensuring durability and longevity. Strong Grip: MDO Nip Rollers provide a strong grip on films during the stretching process, facilitating uniform stretching and preventing slippage. Color Options: These rollers are available in different colors, such as red, yellow, and white.   How to improve the MDO Nip Roller Lifetime? 1. Improve the rubber hardness to 75 or 80 Shore A. 2. Make chamfer at the rubber edge   We have full of experiance on roller for plastic films production. Please fell free to contact with us if you have some new inquiry or problems need to be solved.  

PRS Cooling Introduction & possible problem   The cooling roller is used to cool down the film after horizontal drawing to ensure its stable shape and performance. It is one of the important roller types in the traction section. Usually, the traction section has three cooling rollers, chrome-plated, anti-stick and anti-corrosion cooling rollers.     type Chrome coating cooling roller Anti-stick cooling roller anti-corrosion cooling rollers Surface feature Chrome coated Anti-stick coating Anti-corrosion stainless steel Main function High speed cooling ,abrasion-resistant Avoid film stick on the roller Corrosion-resistanct, stable cooling application Bopp/bopet/bopa film & tape Bopp/bopet/bopa film & tape Bopp/bopet/bopa film & tape Line speed 600m/min 650m/min 650m/min Line width 10.6m 10.6m 10.6m     1.After the TDO , the cooling roller is chrome coating,suitable line speed 600m/min ,width 11000mm   Then the next is anti-stick coating cooling roller ,suitable line speed 600m/min ,width 11000mm       After corona station , it will be anti-corrosion cooling roller ,suitable line speed 600m/min ,width 11000mm   Because during the corona treater roller running, it will release ozone, which have corrosion , once ozone enter into the roller body, which will generate the coating bump and shed once occur this kind of problem, it need to change the roller completely ,in only repair the surface, the bump and shed problem will occurred again after a while .     the technical details of PRS cooling roller   Double-shell construction, water inlet and outlet at same end of roller Inner and outer shell material Q345B, outer shell interference assembly process Flow system: offer the original flow design according to your line number. Drive side: low carbon alloy steel forging flange, ultra high strength steel forging shaft Operating side: low carbon alloy steel forging flange/shaft head, interference assembly and welding Out of roundness:≤0. 1 mm Cylinder fom:≤0. 1mm Dynamic balancing G2.5 with maximum speed 630m/min Surface:Hard Chrome Coating, anti-stick coating and O3 resistant coating     Successful case   Cooling roller have been provided to more than 100 BOPP/BOPET production lines in 10+ countries and regions around the world, cooperative customers include many well-known companies and it helps increase the efficiency of the film stretching process by more than 5-10%.  

The colloid used for polyurethane rubber rollers has sufficient surface viscosity to ensure that the rubber rollers have good ink transfer and inking properties during the printing process, and their good ink-friendly properties can ensure high-quality printing.   When using and selecting polyurethane rubber rollers, if you do not pay attention to maintenance or do not know how to choose the method, the phenomenon of degumming of polyurethane rubber rollers will occur.Today, let's analyze the factors that affect the degumming of polyurethane rubber rollers. 1.Adhesive selection. 2.Treatment of iron core. 3.Influence of mold and core temperature. 4.Mold design and mold requirements. 5.Influence of synthesis process. 6.The influence of the pouring process.   Therefore, during the transportation and storage of polyurethane rubber rollers, they should avoid direct sunlight, rain and snow, and impact under pressure. Contact with acids, alkalis, greases and organic solvents is prohibited, and they should be 2 m away from the heat source.And store (-10°c-40°c) in a cool and ventilated room with a relative humidity below 85.Do not approach a heat source or be exposed to cold air; the rubber layer of the rubber roller shall not be pressed.When storing, rotate 180 degrees every half month.The rubber parts should be wrapped in coated kraft paper or plastic film, and then packed with blankets, etc., do not put it naked to avoid light.   The rubber part should be wrapped in coated kraft paper or plastic film, and then packed with blankets, etc. Do not put it naked to avoid light. Be sure to use a spacer to support the roller journal, and do not support the rubber part.   During storage, in order to prevent deformation of the rubber structure, the roller body should be rotated regularly (it is advisable to rotate once in half a month), and do not use rubber rollers taken from cold places, especially in cold winter.If you use a rubber roller that has just been brought from the warehouse, the rubber is in danger of breaking.   When the polyurethane rubber roller starts to run, it should be gradually and evenly pressurized. For long-term storage, it is best to grind it slightly before use.   If the surface of the rubber roller is wrinkled or cracked during use, it should be removed in time and re-polished for use. When the polyurethane rubber roller stops running, it should not be subjected to pressure.