PVC Technologist-B. Sc, B. Sc. Tech, M. Tech
Fellow of Indian Plastics Institute – FIPI & Life member of IPI
53 years of experience in the field of PVC processing in India and overseas including:
During processing, thermal stabilizer gets consumed, with high residence time, and higher temperature. Stability of PVC compound should be adequate not only process once, but to take care of recycled
Most uPVC pipe industries use a standard formulation, for the ease of operation. Consider two strategies for processing – Popular, compromising, and “HARD”, involving fire fighting, as below: Use a standard
The pores inside SPVC grains are generally interconnected through winding channels, creating a maze-like geometry called “Tortuosity”. The degree of connectivity varies depending on polymerization conditions. Even, some of the
Heart of PVC processing is optimum fusion of 65-70%, and minimum thermal/oxidative degradation. Fusion depends upon balancing of lubrication, thermal stabilizer, temperature, & shear within extruder, Within the extruder, motion
Due to short supply, we need to use S-PVC from different sources. K-57 resin supplied by various manufacturers mentions a K-value of 57 ± 1 in their test certificate. This
1 What happens to SPVC during hot mixing? PVC being thermally unstable, cannot be processed without compounding. In hot mixing, SPVC and additives are added sequentially as per the SOP,
1 Eliminating non-Value adding activities (NVAA) improves EBITDA: Objectives of any business organization ought to be: To earn and maximize profit (EBITDA) through efficient working. To earn and maximize goodwill
1 What does EBIDTA tell us? Industries use EBITDA of competitors to evaluate their performance vis-à-vis competitors. Question is, whether such comparison is reasonable or it has some pitfalls, need
1 Plasticizer efficiency Plasticizers are used in PVC compounds to provide flexibility, workability, and distensibility, besides lower shore A hardness, and Tg. A plasticizer molecule has two types of structural
1 Reasons for rough cable surface, and their effects: Plasticized PVC is used in electric cables for coating conductors for insulation purposes, and sheathing purposes. Rough, and uneven surface is
Abstract: In part 1, we have seen how variation in K-Value, particle size, particle size distribution, particle shape, skin thickness etc.; affects PVC processing. In part 1, we have seen
Abstract: In pipes, profiles, fittings and sheets formulation, PVC is a major component. Majority of PVC processors generally believe that when they get PVC resin of specific K-Value, say K-67,
Abstract: DOP is traditionally used as a general-purpose plasticizer for PVC. However,due to toxicity problems, it is on way out in many countries and banned for PVC products in food
Abstract: The “Hildebrand Solubility Parameter”(δ) provides a numerical estimate of the degree of interaction between materials and can be a good indication of solubility, particularly for polymers. Materials with similar
Abstract: DOP, one of the most widely used general purpose ortho phthalateplasticizer for PVC, is on its way out due to health concerns and banned in PVC products for food
Coming soon
Training at Sintex BAPL Ltd. Bhopal
Providing technical consultancy to PVC processing industries to improve productivity as well as quality.
Providing advanced training, on line and off line to technologists and managerial staff in the field of PVC processing, like – Intricacies in compounding and Mixing, Technical details of PVC extrusion, injection moulding, calendaring, thermoforming etc., Quality improvement etc., at industries and individual level.
Modifying existing QMS and integrating Lean manufacturing techniques into QMS and providing Lean manufacturing training and consultancy, to improve productivity and costs, and
Conducting third party inspections for engineering applications of PVC products.
1 What happens to SPVC during hot mixing? PVC being thermally unstable, cannot be processed without compounding. In hot mixing, SPVC and additives are added sequentially as per the SOP,
1 Eliminating non-Value adding activities (NVAA) improves EBITDA: Objectives of any business organization ought to be: To earn and maximize profit (EBITDA) through efficient working. To earn and maximize goodwill
1 What does EBIDTA tell us? Industries use EBITDA of competitors to evaluate their performance vis-à-vis competitors. Question is, whether such comparison is reasonable or it has some pitfalls, need
1 Plasticizer efficiency Plasticizers are used in PVC compounds to provide flexibility, workability, and distensibility, besides lower shore A hardness, and Tg. A plasticizer molecule has two types of structural
1 Reasons for rough cable surface, and their effects: Plasticized PVC is used in electric cables for coating conductors for insulation purposes, and sheathing purposes. Rough, and uneven surface is
Abstract: In part 1, we have seen how variation in K-Value, particle size, particle size distribution, particle shape, skin thickness etc.; affects PVC processing. In part 1, we have seen
Abstract: In pipes, profiles, fittings and sheets formulation, PVC is a major component. Majority of PVC processors generally believe that when they get PVC resin of specific K-Value, say K-67,
Abstract: DOP is traditionally used as a general-purpose plasticizer for PVC. However,due to toxicity problems, it is on way out in many countries and banned for PVC products in food
Abstract: The “Hildebrand Solubility Parameter”(δ) provides a numerical estimate of the degree of interaction between materials and can be a good indication of solubility, particularly for polymers. Materials with similar
Abstract: DOP, one of the most widely used general purpose ortho phthalateplasticizer for PVC, is on its way out due to health concerns and banned in PVC products for food