Open Mill
Open Mill
Multiple domestic factories for bidding. Free promotion. Price to be negotiated between winning bidder and buyer.
Please provide below information for posting:
- New or used; 2. Model or roller dimension; 3. Functional requirements; 4. Processed material; 5. Power; 6. Purchase quantity
表格
| Type | Application Scenarios | Main Specs (Roller Diameter × Length) | Main Features |
|---|---|---|---|
| Lab / Small‑size Open Mill | Formula R&D, material testing, teaching demo, small‑batch sampling | Φ120×320mm to Φ230×620mm (4‑9 inch) | Compact structure, flexible operation, small batch capacity (0.5‑6 kg/batch), high temperature control accuracy, easy cleaning & material change. |
| Industrial Open Mill | Mass production: plasticating, mixing, warming, sheeting | Φ350×900mm to Φ650×2100mm | Robust construction, large throughput (15‑150 kg/batch), high motor power (40‑115 kW), capable of continuous operation. |
Specifications & Core Parameters
Open mill size is defined as roller diameter × working roller length. Different sizes correspond to different technical parameters.
表格
| Spec (Diameter × Length) | Common Grade | Front‑roll Linear Speed (m/min) | Front‑to‑Rear Roll Speed Ratio | Main Motor Power (kW) | Batch Capacity (kg) | Main Application |
|---|---|---|---|---|---|---|
| Φ160×320mm (6‑inch) | Lab / Small‑size | 8.03‑10 | 1:1.22‑1:1.35 | 3.7‑5.5 | 1‑2 | Lab formula development, plasticating, mixing |
| Φ230×620mm (9‑inch) | Small‑size / Production | 24 | 1:1.17 | 11‑15 | 3‑6 / 10‑15 | Small‑scale production, lab‑scale‑up https://m.hi1718.com/product/2012410163818674.html |
| Φ350×900mm | Industrial | 17 | 1:1.2‑1:1.3 | 28 | 15‑25 | Plasticating, mixing, warming http://www.xb‑tech.com/business/2011/1231/120.html |
| Φ400×1000mm | Industrial | 19 | 1:1.2‑1:1.3 | 40 | 20‑35 | Plasticating, mixing, warming http://www.xb‑tech.com/business/2011/1231/120.html |
| Φ550×1500mm | Large Industrial | 28 | 1:1.2‑1:1.3 | 95 | 45‑70 | Plasticating, mixing, warming |
| Φ650×2100mm | Extra‑large | 32 | 1:1‑1:1.1 | 115 | 150 | Sheeting http://www.xb‑tech.com/business/2011/1231/120.html |
Supplementary Notes: Speed Ratio: Front roll runs slower than rear roll to generate shear force. Higher ratio delivers stronger shear yet more frictional heat. Roll Gap: Adjustable clearance between two rollers ranging from 0.1 mm to 10 mm, controlling final material thickness and shear intensity.
Functional & Structural Classification
Specialized sub‑types for specific applications: ‑ Standard Type: For basic plasticating, mixing and warming. Model prefix: XK (rubber), SK (plastic), X(S)K for rubber‑plastic dual‑use. ‑ Rubber Cracker (XKP): Grooved roller surface for breaking bulk raw rubber for downstream processing. ‑ Warming Mill (XKA): Heats and homogenizes cold rubber compound, feeding calender or extruder.
Main Features
‑ Simple and durable: Composed of rollers, frame, gap‑adjustment unit, transmission and heating‑cooling system; low failure rate, easy maintenance. ‑ Flexible operation & visual inspection: Open‑frame design allows real‑time material observation and flexible process adjustment (triangular folding, cutting operation etc.). ‑ Wide adaptability: Processes plastics (PVC, PE), rubber, filler modification, blending and masterbatch preparation. ‑ High safety requirements: Modern mills are equipped with emergency pull rod, knee‑operated reverse, emergency stop and other multi‑safety protections for operator safety. ‑ Complete temperature control: Electric / steam heating plus water cooling, precise temperature control from ambient to 300 °C for diverse materials.
Selection Guidelines
‑ Confirm application: Lab R&D sampling or mass workshop production, determines small‑size or industrial model. ‑ Confirm output: Select specification by batch capacity and motor power referring to batch‑loading table above. ‑ Confirm material: General plastic, engineering plastic or rubber, defines required temperature range and speed ratio. ‑ Prioritize safety: Verify complete safety devices such as emergency brake and knee‑operated reverse, non‑negotiable requirement.
Participation Process
Manufacturers: Contact supplier service for supply registration.
Buyers: Click group‑purchase or contact procurement service to submit requirements. The platform filters suppliers from database or releases bidding based on aggregated demands. Buyers select competitive suppliers and sign sales contracts.
