Plastic Recycling Plant Improves Granulation Quality of Waste PVC Profiles and Pipes with 180 Type PVC granulator
Waste PVC pipes, plastic steel profiles and packaging soft films are mainstream materials in the plastic recycling industry with a huge market recycling volume. However, most small and medium-sized recycling plants have long adopted general granulation equipment, failing to solve the persistent problems of poor finished product quality, high loss and low profit. General equipment with extensive temperature control easily causes particle carbonization, yellowing and porous looseness when processing thermally sensitive PVC materials; the absence of professional water removal structures leads to severe adhesion and agglomeration of wet materials; frequent shutdowns for manual screen changes limit production capacity and cause waste accumulation, forcing factories to sell products in bulk at low prices and failing to undertake high-end orders. A Shandong-based plastic factory focusing on waste PVC profile and pipe recycling and granulation has completely solved years of production pain points and achieved triple upgrades in production capacity, quality and profit by newly launching the high-config 180 type PVC granulator special production line.
The customer mainly engages in recycling and granulation of waste PVC plastic steel door and window profiles, water supply and drainage pipes and industrial PVC soft films with stable annual order volume. Before renovation, the factory used general double-stage granulation equipment with prominent production shortcomings. Firstly, frequent finished product defects: general equipment with few heating groups and inaccurate temperature control often causes local high-temperature carbonization, particle yellowing and black spots during PVC processing, while low-temperature incomplete plasticization leads to loose particles and uneven quality. Secondly, high production loss: cleaned PVC materials with high water content cause severe particle adhesion and mildew with no professional water removal device, resulting in a high waste rate. Thirdly, poor production continuity: traditional manual screen changes require frequent shutdowns and disassembly every day, delaying mass production. Moreover, ordinary screws have poor wear resistance and are prone to carbon deposition and scratching when processing sediment-containing waste PVC miscellaneous materials, leading to high monthly maintenance costs.
To completely get rid of low-end price competition, improve the quality of recycled PVC particles, expand stable production capacity and reduce operation and maintenance loss, the customer finally selected our exclusive 180 type PVC granulator production line after on-site comparison of multiple models and process tests, completely replacing old general equipment with immediate and remarkable improvement effects after commissioning.
In the core quality improvement link, the exclusive 11-group zoned heating and temperature control system of the 180 type PVC granulator completely solves the core problems of PVC carbonization and uneven plasticization. The 180 type main machine with 75KW high-power output and 315 type low-noise reducer operates stably, and the 180×3000mm high-frequency wear-resistant screw adapts to the extrusion requirements of soft and hard PVC materials. The 11-group independent heating rings realize segmented precise temperature control, strictly fitting the thermal melting curve of PVC with low-temperature preheating in the front section, constant-temperature plasticization in the middle section and stable-temperature discharging in the rear section, fundamentally eliminating high-temperature material decomposition carbonization and low-temperature unplasticized residue for thorough and uniform material melting. Materials preliminarily processed by the main machine are sent to the 165 type auxiliary machine for secondary fine mixing and purification. The 30KW auxiliary machine adopts a reasonable power ratio, and the fine screw further densifies the material structure, completely eliminating particle looseness, bubbles, impurities and other defects.
The hydraulic non-stop screen changing and professional water removal system greatly reduce production costs and improve product premium for customers. The 350 large-diameter screen has sufficient filtration area to efficiently intercept sediment, dust and coke impurities in PVC materials. The 4KW hydraulic pump station provides stable pressure for left-right alternating screen replacement with zero shutdown and zero strip breakage throughout the process. The effective operating rate of the equipment increased from the original 72% to over 95%, significantly improving daily production capacity and reducing waste loss. Matched with the 2500×300 stainless steel water shaking and strip blowing machine, dual water removal completely eliminates residual water on plastic strips, thoroughly solving the problems of particle moisture adhesion and mildew deterioration. The dry and clean finished particles can be stored for a long time, helping the customer successfully undertake multiple high-end procurement orders for pipes and modified products.
The full-line automatic supporting system simplifies production and reduces maintenance costs. The 600×600 forced variable frequency feeder completely solves jamming, bridging and uneven feeding of soft and hard PVC materials, maintaining stable extrusion pressure. The 4-meter extended stainless steel water tank realizes gradient water cooling for neat and regular plastic strip shaping. The variable frequency alloy granulator produces uniform particles without scraps or burrs. The rear storage bin fan automatically removes dust and air-dries materials to ensure consistent finished product appearance. The national standard variable frequency electric control system features simple operation, requiring only one worker to supervise the entire line and greatly reducing labor costs.
The customer’s production supervisor feedback: After upgrading to the 180 type PVC granulator, the factory has completely eliminated the long-standing problems of PVC particle yellowing, carbonization and adhesion. The finished particles are transparent, pure and stable in quality, fully meeting high-end industrial material standards with a price increase of more than 300 yuan per ton. The equipment has an extremely low failure rate with no frequent maintenance required and sufficient stable production capacity, enabling quick return on equipment investment. The factory plans to expand waste PVC recycling and processing scale and deeply develop the high-end recycled particle market in the future.
This case fully verifies that the exclusive advantages of the 180 type PVC granulator including precise zoned temperature control, double-stage purification, non-stop stable production and anti-adhesion water removal are perfectly adapted to the large-scale and refined production needs of small and medium-sized factories, making it the preferred special equipment for quality improvement and profit growth in the PVC recycling industry.
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