·Core Process Value
Conventional single‑sided equipment requires two‑pass processing, resulting in inconsistent pattern depth and flatness between the front and back surfaces, along with positioning errors and material stretching losses during flipping. This machine uses precisely matched upper and lower specialty alloy working rollers, with pattern, roundness, and temperature settings fully locked in sync. As the web passes through the nip, both sides are simultaneously formed with raised/embossed textures, while the calendering function eliminates wrinkles and thickness variations. Two processes are combined into one, reducing both production time and rejection rates simultaneously.
·Core Working Units
Both the upper and lower working rollers are self‑produced matching composite rollers from Guangyu, manufactured from integrally forged alloy steel substrates with patterns integrally formed via five‑axis laser engraving, and surface‑reinforced with hard chromium or ceramic coatings. The upper and lower rollers are pre‑matched and run‑in prior to delivery, with pattern‑depth tolerance ≤±0.003 mm and parallelism error ≤±0.004 mm, ensuring that the patterns remain sharp even after millions of steel‑to‑steel high‑speed rolling cycles. Unlike machines assembled from purchased rollers, this equipment features roller materials, hardness, and pattern depths exclusively calibrated to the machine's maximum linear pressure, with lower refurbishment and re‑engraving maintenance costs.
Both rollers are equipped with built‑in circulating thermal‑oil temperature‑control flow channels, paired with independent temperature‑control modules, ensuring that the temperature differential between the upper and lower rollers and across the entire roller surface is synchronously locked within ≤±0.7 °C, with minimal axial temperature fluctuation. Most double‑sided machines on the market heat only one roller while the other operates at ambient temperature under pressure, causing inconsistent heat exposure on the two sides of the material—leading to curling/warping and one side with clear patterns while the other is faint. This machine's balanced heating on both sides completely eliminates such defects, resulting in a highly uniform texture across the entire roll of finished product.
·Intelligent Pressure Control System
Equipped with a segmented servo‑hydraulic uniform‑pressure control system and multi‑point pressure‑sensing feedback modules, the pressure deviation across the entire nip is ≤±0.02 MPa, capable of real‑time compensation for minor deflection/sagging of the wide roller under load—eliminating common wide‑web issues such as overly deep embossing at the edges and insufficient calendering in the center. Pressure parameters are steplessly adjustable based on the hardness of different materials—thin metal sheets, plastic films, paper, nonwovens, etc.—ensuring that lightweight substrates are not crushed while heavy sheets achieve fully compacted patterns. A single machine covers diverse material‑changeover needs with high flexibility.
·Structural Reliability
The integral cast‑steel frame undergoes extended stress‑relief annealing to completely eliminate internal casting stresses, ensuring that long‑term steel‑to‑steel high‑pressure rolling does not cause frame deformation or resonance shift. Gears and bearing transmission components are repeatedly pre‑run and calibrated prior to delivery, with triple backlash‑calibration measures ensuring 24/7 heavy‑load operation without play or vibration. The machine operates with low noise and extremely low failure rates, ideally suited for continuous high‑volume production in building materials and packaging plants.
·Operational Economy
Two processes completed in one pass reduce combined labor and energy costs by over 30 %; closed‑loop intelligent control of pressure and temperature reduces material stretching and breakage rejection rates by 80 %; factory‑matched paired rollers offer longer service life, significantly reducing annual replacement and grinding frequency. One machine accommodates multiple materials—metal, film, paper, and nonwovens—eliminating the need for multiple single‑function units and optimizing both floor space and equipment investment. Finished sheets exhibit symmetrical and well‑proportioned textures on both sides, with uniform three‑dimensional relief effects. After calendering leveling, the sheet surfaces achieve the required gloss and flatness, free from wavy warping or thickness discrepancies, significantly enhancing the market premium potential of end products.
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