Advantages of Powder External Lubricants Over Flake External Lubricants in PVC Processing
2024-07-11
In the realm of PVC processing, the role of lubricants is crucial in improving the flowability of resin and facilitating easy demolding of products while preventing defects due to adhesion in machinery or molds. They are categorized into external and internal lubricants based on their mechanisms of action.
Commonly used PVC lubricants include calcium stearate, oxidized polyethylene wax (OPE WAX), stearic acid, glycerol monostearate, paraffin wax, polyethylene wax (PE WAX), and more. These lubricants come in various forms such as flakes, powders, and beads to cater to different production processes and application methods.
It is essential to note that the performance of PVC lubricants is primarily determined by factors like molecular weight and compatibility, rather than their appearance.
In recent years, there has been a growing trend towards using powdered lubricants. So, what are the advantages of powder external lubricants over flake external lubricants?
1. Uniformity: Powder lubricants can be applied more uniformly on the surface of workpieces, ensuring a more even lubrication effect compared to flake lubricants, which may lead to uneven application.
2. Precision in Dosage: Powder lubricants allow for more precise control of the amount applied, reducing wastage. On the other hand, it might be challenging to control the dosage with flake lubricants.
3. Cleanliness: The thin film formed by powder lubricants on the workpiece surface is easier to clean and does not leave behind residues that flake lubricants might, thus reducing the cleaning effort.
4. Versatility: Powder lubricants are more versatile and suitable for a range of processes and materials compared to flake lubricants, which may be less flexible in certain situations.
5. Automation Compatibility: Powder lubricants are more easily integrated with automated production lines, enhancing overall production efficiency.
In conclusion, powder external lubricants offer more advantages over flake external lubricants in terms of application uniformity, dosage precision, cleanliness, versatility, and compatibility with automated production processes in the realm of PVC processing. These benefits make them a favorable choice for many in PVC industry.
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