Adjusting 'optimal' on the spot. Maximizing the potential of every seat.
【Product Features】 • Powerful and stable curvature adjustment through hydraulic control The size of the curvature (bow) can be adjusted freely using manual handle operation. Depending on the material and thickness of the sheet and the operating speed of the machine, it can be set in real-time for optimal wrinkle removal effect without stopping operation. • Versatile dual-functionality as a straight roll By reducing the degree of curvature (bow) to zero, it also functions as a complete straight roll. This allows one machine to perform various roles, enhancing the versatility of the equipment. • Available in ultra-low torque (MT) type for low-tension materials For customers handling delicate films that are sensitive to tension, we also accept orders for production in ultra-low torque (MT) specifications, which have extremely low rotational resistance.
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basic information
Size (Product Specifications) • Rubber outer diameter (mm): φ65 to φ120 • Rubber face length (mm): 500 to 2500 • Notes: We also accept custom manufacturing tailored to your equipment and applications. Please feel free to consult us regarding dimensions other than those listed above.
Price information
To propose the best specifications and prices for our customers, we first accept technical consultations. Please feel free to contact us via the inquiry form or by phone along with your request for a quote.
Delivery Time
Applications/Examples of results
• Films: Optical films, packaging films, agricultural films, battery separator films, thin films, etc. • Paper: High-grade paper, cardboard base paper, specialty paper, etc. • Metal foils: Secondary battery electrode materials (copper foil, aluminum foil), foils for capacitors, etc. • Textiles and non-woven fabrics: Glass fiber fabrics, carbon fibers, various industrial non-woven fabrics, mask materials, etc. • Others: All sheet-like web materials (Roll to Roll transport items)
Company information
We are Osaka Senshoku Kikai Co., Ltd., the pioneer and first manufacturer to domestically produce "Expander Rolls" in Japan. We provide fundamental solutions to eliminate "wrinkles," "shrinkage," and "slippage" in Roll-to-Roll web handling processes for films, metal foils, and non-woven fabrics. [Our Core Strengths] ◆ Japan's Only "Precision Curved Grinding" Our unique technology enables precision grinding while the roll is in its curved state. This eliminates vibration even on high-speed lines for ultra-thin films, dramatically improving your production yield. ◆ Ultra-Low Torque "Drive-less Design" No motor required. Our rolls rotate smoothly driven solely by the web's conveying force, effectively preventing slip scratches on your products. ◆ "Special Materials" & "Retrofitting" Fully compatible with special materials such as "fluorine rubber" (FKM), which is essential for high-temperature and adhesive lines. We also have an extensive track record of replacing/retrofitting other manufacturers' flat-type rolls with our curved rolls. ◆ Repair & Refurbishment for All Brands We provide repair and restoration services for expander rolls from any manufacturer, both domestic and international. [Proven Track Record] Since our founding in 1951, our cutting-edge technology has been featured on major national TV news programs and exhibited at the Expo 2025 Osaka, Kansai. Beyond standard catalog specifications, we promise to offer the optimal proposals and solve your line's most difficult challenges. Please feel free to contact us.
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