Custom Polyurethane Nip Roller for Film & Paper Slitter Rewinders

The AstraRoll Custom Polyurethane Nip Roller is engineered to deliver precise contact pressure, vibration-free operation, and superior web tension control during high-speed film and paper slitting operations. During continuous rewinding, air entrapment between web layers causes severe winding defects, including roll softness, film telescoping, paper edge misalignment, and surface wrinkling.

Our industrial PU nip rollers solve these converting issues. Built on precision-ground heavy-wall carbon steel or lightweight aluminum cores, each roller is cast with premium-grade polyurethane elastomer compounds tailored to substrate sensitivity. Featuring high elastic recovery and excellent tear strength, the PU cover conforms gently to minor material gauge variations while maintaining a strict linear nip load across the entire face length. Whether processing thin polymer films (PET, BOPP, PE) or high-speed paper webs, AstraRoll polyurethane nip rollers guarantee tightly wound, flawless finished rolls.

Technical Parameters

Product Framework: Precision Polyurethane (PU) Pressure / Nip Roller

Cover Polymer Base: Premium Cast Polyurethane (TDI / MDI Hot-Cast System)

Hardness Window: 50 Shore A - 95 Shore A (Customizable to web elasticity)

Core Metal Options: Heavy-Wall Seamless Steel Tube / High-Strength Aluminum Alloy

Surface Finish Profile: Ra 0.2μm - Ra 0.8μm (Mirror polished / Micro-ground / Matte)

Special Cover Options: Anti-static integration, non-marking formulation, high oil/chemical resistance

Dynamic Balancing: ISO 21940 G2.5 standard for high-speed operation (800+m/min)

Concentricity Profile: TIR (Total Indicator Runout) ≤0.015 mm via CNC cylindrical grinding

Primary Applications & Industry Uses

Plastic Film Slitter Rewinders: Acts as a primary nip pressure roll for BOPP, PET, PE, CPP, and barrier packaging films, eliminating air bubbles and preventing film scratching.

Paper & Paperboard Converting: Functions as a heavy-duty nip roller for kraft paper, specialty paper, cardboard, and release liners, resisting paper dust abrasion.

Tissue & Towel Winding Machinery: Delivers soft, non-crushing nip pressure for delicate tissue paper rolls without compromising bulk density.

Lithium Battery Separator & Foil Slitting: Provides precision, anti-static nip control for sensitive battery separator films, aluminum foil, and copper foil substrates.

Why Choose AstraRoll's Polyurethane Nip Roller for Film & Paper Slitter Rewinders?

Superior Polyurethane Wear Immunity:

High-speed web friction rapidly wears down standard rubber covers. AstraRoll cast polyurethane maintains superior abrasion resistance and tear strength, resisting surface grooving and maintaining long service intervals.

Uniform Air Purging & Wrinkle-Free Winding:

Precision-ground PU covers maintain exact parallel nip contact across long face lengths, effectively expelling boundary layer air to secure tight, uniform roll density without crushing delicate substrates.

Non-Marking & Non-Scratch Formulation:

Formulated without free plasticizers or oil migration, our PU matrix leaves zero residue or pressure marks on ultra-clear films, high-gloss paper, or printed packaging substrates.

ISO G2.5 Dynamic Balancing for Zero-Vibration Performance:

Unbalanced rollers induce web chatter at high line speeds. Every PU nip roller is CNC precision ground to strict TIR ≤0.015mm and dynamically balanced, ensuring smooth performance at line speeds exceeding 800m/min.

Q1. Are you a trader or direct factory?

We are a direct manufacturing factory with over 20 years of expertise in high-end industrial rollers, casters and material handling solutions. Our facility operates with ISO-certified quality management systems, allowing us to maintain full control over production cycles and quality standards. Throughout two decades of growth, we have established deep, long-term strategic partnerships with several listed companies and global automation leaders, proving our reliability as a high-tier industrial supplier.

Q2. What are your main products?

AstraRoll specializes in the engineering and production of three core product lines: Industrial Rollers, Heavy-Duty Wheels, and Precision Casters. We do not just sell components; we provide integrated movement and transport solutions. Our products are widely utilized across high-demand sectors, including: New Energy, Lithium Battery, Mining, Heavy Industry, Medical Institutional, Agriculture and Logistics.

Q3. What about delivery time?

We deeply understand that project timelines are critical.
Standard Products: Usually dispatched within 7–15 working days if the components are in stock.
Customized/OEM Orders: Depending on the complexity and volume, the lead time typically ranges from 20–35 days. This includes time for technical drawing confirmation, specialized tooling, and rigorous pre-shipment testing.
Shipping Methods: We offer flexible global logistics solutions, including FOB and CIF terms. We ship via Sea Freight (for bulk industrial orders), Air Freight (for urgent project needs), and International Express (DHL/FedEx/TNT) for smaller components or samples.

Q4. How can I get a quote for customized products?

Since a significant portion of our business involves specialized engineering, pricing is tailored to your specific technical requirements. To provide an accurate quote, please provide the following details: Technical Drawings or Sketches, Application Environment, Quantity, Special Requests. Our engineering team typically reviews and responds to custom inquiries with a formal quotation within 24–48 hours.

Q5. What is your payment?

TT / Paypal / Western Union / LC / Credit Card etc. are all available to us.