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PVC calendered film manufacturers: Vital in PVC Film Production


As a PVC Calendered Film Manufacturer, we advocate that PVC calendering technology is undoubtedly an indispensable key step in the field of PVC film manufacturing that is widely used today. Let us uncover the key steps and innovations behind this technology and understand how it has become an indispensable production link in PVC film manufacturing.

What is PVC calendering?

PVC calendering is a manufacturing technique employing extruders, calenders, and various equipment to transform PVC resin into films or sheets. Known for its high efficiency, continuous operation, and advanced automation, this method finds extensive application in PVC membrane production.

Within the PVC film production process, PVC calendering plays a pivotal role. Not only does it facilitate the conversion of PVC resin into films or sheets, but it also allows for precise control over thickness, uniformity, transparency, hardness, elasticity, and other physical properties. This is achieved by adjusting process parameters and formulas, tailoring the PVC film to meet the specific requirements of various industries.

PVC Calendering Holds a Central Role in the Manufacturing of PVC Films

It is mainly reflected in the following aspects:

1. Control the thickness and uniformity of PVC film

Key parameters, including temperature, pressure, and rotation speed, directly influence the thickness and uniformity of PVC films during the calendering process. Through precise adjustment of these parameters, it becomes possible to manufacture PVC films that meet specific thickness and uniformity requirements.

2. Enhancing the transparency and gloss of PVC film

In the PVC calendering process, incorporating additives and employing surface treatment agents are effective methods to improve the transparency and gloss of the PVC film, enhancing its visual appeal.

3. Improving the hardness and elasticity of PVC film

Through adjustments to both the formula and process parameters during PVC calendering, it is possible to enhance the hardness and elasticity of the PVC film, ultimately boosting its durability and extending its service life.

4. Attaining Versatility in PVC Membranes

Through the incorporation of various additives and functional agents in the PVC calendering process, diverse PVC membranes can be manufactured, serving different purposes such as waterproofing, heat insulation, explosion resistance, and more.

Basic Processes and Steps of PVC Calendering

1. Ingredients

Add PVC resin, plasticizer, stabilizer, filler and other additives to the mixing equipment in a certain proportion and order and mix thoroughly.

2. Plasticizing

The mixed PVC material is put into the extruder and calender, and the PVC material is melted and further plasticized through heating and shearing.

3. Forming

The plasticized PVC material is transferred to the cooling drum through a mold or calender to form a film of a certain thickness and width.

4. Cooling

Transfer the formed PVC material to the cooling line or cooling drum, and quickly cool it down through forced cooling to prevent stress deformation of the material.

5. Traction

Pull the cooled PVC material out with a traction device and roll it into a roll.

6. Cutting and Packaging

Cut and package the rolled PVC materials as required to complete the entire production process.

In the PVC calendering process, precise control of parameters in each step is essential. Managing variables like temperature, pressure, and rotational speed significantly influences the quality and performance of the end product. Additionally, ensuring high-quality PVC membranes requires attention to raw material quality, equipment cleanliness, and regular maintenance.

If a factory has PVC film calendering production lines, it will have the following advantages:

1. Efficient production

The calendering production line is an efficient production method that can produce PVC films quickly and continuously, thereby improving production efficiency and reducing production costs.

2. Stable Quality

The calendering production line has precise process control and highly automated equipment, which can ensure the stable quality of PVC films and reduce product defect rates and waste.

3. High Production Flexibility

The calendering production line can quickly adjust the production process and product types according to market demand, thereby better meeting customer needs and improving market competitiveness.

4. Reduce Costs and Benefit Customers

The calendering production line uses automated equipment and has high production efficiency. JB PVC advocates that the saved production costs can be used to benefit customers, and we can develop and make progress together with our partners.


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