Import Auto. Convolute Drum Winder — Buy in Bulk from Supplier in China

The Auto. Convolute Drum Winder from San Qingdao International Trade Co., Ltd. is a fully automated paper drum forming machine designed for continuous production of convolute-wound paper tubes. It handles paper tube diameters from 280 mm to 450 mm and operates at a rated speed of 180 pieces per hour. The machine runs on 380V three-phase power at 50 Hz, drawing 9 kW, and requires a compressed air supply of 1.0 MPa. Its total weight is approximately 2500 kg, indicating a substantial floor-mounted industrial unit.

The machine integrates multiple automated stations: slitting, feeding, gluing, heating, cutting, winding, and discharging, all sequenced through a PLC control system. The convolute winding method wraps paper layers at an angle to the tube axis, producing drums with superior crush resistance and dimensional stability compared to spiral-wound alternatives. Paper grades typically range from 120 to 400 gsm kraft or recycled fibreboard, with adhesive systems using standard PVA or dextrin-based hot-melt formulations. The heating element maintains glue activation temperature, which is critical for bond strength in high-speed operation.

This winder serves packaging manufacturers, textile cone producers, and industrial tape core makers who need consistent, large-diameter paper drums. Buyers should confirm the maximum and minimum paper widths the slitting section can accept, as this determines the range of drum lengths achievable. They should also verify whether the PLC includes recipe storage for quick changeovers between diameter settings, and whether the supplier provides installation supervision and operator training as part of the delivery terms.

San Qingdao International Trade Co., Ltd. is based in Qingdao, Shandong Province, China, a coastal city with established port infrastructure for machinery exports. The company holds a harbor trust tier, which indicates a basic marketplace presence without advanced verification or transaction history. Its response rate is recorded at 0.00 percent with an average response time of zero hours, suggesting that enquiry responsiveness has not yet been established or documented.

The listing presents this Auto. Convolute Drum Winder as a complete automated line, but provides no information about the company's manufacturing scope, year of establishment, after-sales service network, or previous export markets. Buyers should conduct direct due diligence: request factory audit reports, reference customers for similar drum winder installations, and clarify whether San Qingdao International Trade Co., Ltd. is the original equipment manufacturer or a trading intermediary. No certifications, quality management systems, or warranty terms are stated in the available profile data.