Hard Chromium Plated Cooling Rolls For Plastic Sheet Extrusion Processes
Plastic sheet production has extensive cooling requirements. As the extruded sheet comes out of the heated chamber and die, the plastic - being a poor heat conductor - retains Most of its heat. To achieve proper cooling for plastic sheet, double shell heat transfer rolls are used to draw heat away from the hot plastic sheet. By running the hot plastic sheet in an "S" pattern through three to five chill rolls (either horizontally or vertically) The plastic sheet can be brought down to an acceptable temperature. The quality of the chill rolls will dictate the sheet thickness, texture, and gloss of the plastic sheet surface.
CUSTOM PLASTIC COOLING ROLL FINISHES
Plastic extrusion cooling rolls need to efficiently and quickly transfer heat. They should be fabricated with a hardened base metal to withstand "worm tracking" and other potential deformation consequences of the process.
Roll Technology supplies heat transfer rolls of various sizes with totally custom surface finishes to meet each customer's individual need. Completely defect free flawless optical mirror finishes measured to 0~1 Ra are common in the industry, as are textured surfaces (matte and satin) produce to varying degrees of roughness on the product.
PLASTIC COOLING ROLL SOLUTIONS
We address many issues with respect to engineering the correct roll for its application including deflection, fluid flow, expansion and contraction of the heat transfer roll, final geometry as well as other parameters which make up proper design and finish. Roll Technology works with your engineering and maintenance staffs to offer the following:
- A full range of roll diameters and face lengths.
- Mono-flow or dual-flow heat transfer designs.
- Precision finishing to your exacting specifications.
- Bearing selection and installation for close tolerance run~out requirements.
- Convex, concave or extremely "flat" finishing specifications.
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Common surface finishes that are available:
- Flawless pit-free optical mirror.
- Fine, medium or coarse dull, gray matte surfaces.
- Fine, medium or coarse pre-blasted satin surfaces.
- Commercial polished surfaces from 4-16 Ra.
Companies worldwide depend on Roll Technology's expertise and experience in solving problems inherent in the web processing industry.
| Roll body material | 45# seamless pipe or alloy steel |
| Temperature difference | ≤0.5 degress |
| Hardness after chrome plating and polishing | HRC62 |
| Surface roughness | Ra0.01 |
About us
Huatao Group was founded in 2008. We are a professional and leading supplier of various rollers for paper, corrugated board, rubber & plastic industry ,nonwoven fabric industries over 15 years of experience.
Paper Industry: forming roller, vacuum couch roller, dandy roller ,Breast Roller, press roller,stone roller, rubber roller,dryer cylinder ,size press roller, calender roller, pope reel roller ,spreader roller ,embossing roller.
Plastic & Rubber: chill roller, MDO Preheating Roller, MDO nip roller, MDO stretching Roller, cooling roller, corona treater roller, Corona treatment nip roller, flame roller, carbon fiber contact roller, carbon fiber tension roller, carbon fiber nip roller, winding core , coating drum, cooling drum, spreader roller, anilox roller,calender roller, embossing roller .
Nonwoven Fabric :cylinder roller, doffer roller ,carbon fiber guide roller , embossing roller, cooling roller ,spreader roller
With a strong commitment to innovation, reliability, and customer satisfaction, Huatao Group has become a trusted provider in the industry and our products have been exported to more than 96 countries and have a good reputation.
Huatao understands that each customer may have different requirements, which cannot meet from one factory, but we can meet, we are also familiar with domestic factory advantages with matching superior quality and help customer not walk bend road. We pursue:each customer is buying and using HUATAO products with a rest assured heart and service is never end.
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