Heavy-Duty FRP Core Tube for Copper Foil Winding | Industrial Fiberglass Core Manufacturer
Discover high-precision FRP core tubes specifically engineered for electronic copper foil and lithium battery film winding. Delivering extreme radial strength, zero thermal deformation, and ultra-smooth surfaces. Contact Haikuo for custom industrial s
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Fiberglass core tube
Haikuo heavy-duty FRP (Fiberglass Reinforced Plastic) core tubes are specialized, high-performance winding cores engineered specifically for premium industrial applications, including electronic-grade copper foil manufacturing, lithium-ion battery separators, and high-tensile metal foils. Manufactured using advanced continuous filament winding or high-precision pultrusion processes, these composite core tubes feature a meticulously optimized fiber orientation architecture that guarantees exceptional structural integrity under extreme structural loads.
In high-speed, high-tension winding operations, traditional materials like paper, PVC, or aluminum often fail due to structural deformation, moisture absorption, or chemical corrosion. Haikuo fiberglass core tubes offer a permanent, high-strength solution. With a flawless outer surface finish and tight dimensional tolerances, our core tubes prevent foil wrinkling and material waste, significantly maximizing production efficiency and winding precision.
Key Operational Benefits of Haikuo FRP Core Tubes
- High Precision and Ultra-Low Tolerances: Engineered with tight concentricity and dimensional stability to eliminate vibration and ensure smooth winding at ultra-high speeds.
- Exceptional Radial Compression Strength: Withstands intense inward crushing pressure exerted by thousands of layers of tightly wound heavy metal foils without any structural deflection.
- Superior Smoothness and Anti-Wrinkle Surface: The outer diameter is precision-ground and polished to achieve an ultra-smooth finish, ensuring zero damage or indentation to the first layer of premium copper foil.
- Chemical and Corrosion Immunity: Totally resistant to aggressive industrial chemicals, oils, and environmental moisture, entirely eliminating the risk of structural rotting, rust, or oxidation.
- Zero Thermal Deformation: Exhibits an incredibly low coefficient of thermal expansion, maintaining perfect straightness and structural dimensions even under variable heat curing or drying processes.
Technical Specifications & Standard Dimensions
The table below showcases our standard technical dimensions for industrial winding applications. We provide fully customizable solutions regarding internal/external diameters, total length, surface hardness, and specific resin formulations (including anti-static coatings) to match your exact processing machinery requirements.
| Item | Parameter |
| Specification | 3”, 6”, 11”, 13”, 6”-13”, 6”-18” |
| Maximum length | 3M |
| Tolerance in length | ±1mm |
| Tolerance in diameter | ±0.3mm |
| Roughness of surface | Ra＜1.6um |
| Hardness of surface | ＞30°Barcol |
| Max allowable temperature | 75℃ |
| Roundness | ＜0.1mm |
| Straightness | ＜0.11mm/1450mm |
| Axial anti-modulus | Ex=160,000Kgf/cm2 |
| Surface impedance factor | A type ＜107Ω |
| B type | Insulation surface |
What are the advantages of FRP Core Tube?
FRP Core Tube has many advantages over other core materials, such as wood, paper, or metal. Some of the main advantages are:
High Strength. FRP Core Tube materials has high tensile strength and modulus, which can withstand high loads and stresses without deformation or breakage.
Circularity and Straightness. FRP Core Tube has excellent circularity and straightness, which can ensure smooth and uniform winding of thin foil materials without wrinkles or gaps.
Antistatic. FRP Core Tube has antistatic properties, which can prevent static electricity buildup and discharge that can damage the thin foil materials or cause fire hazards.
Semi-Permanence. FRP Core Tube materials has semi-permanence properties, which means it can be reused for multiple times without losing its performance or quality. This can reduce the waste and cost of core materials.
What are the specifications and uses of FRP Core Tube?
FRP Core Tube has different specifications and uses depending on the application and customer requirements. Some of the common specifications and uses are:
·For secondary battery copper foil winder (cathode). The specification is 6㎛, 8㎛, 10㎛, or 20㎛ thickness. The use is to wind the copper foil that serves as the cathode (negative electrode) of the secondary battery.
·For secondary battery aluminium foil winder (anode). The specification is 10㎛, 12㎛, or 15㎛ thickness. The use is to wind the aluminium foil that serves as the anode (positive electrode) of the secondary battery.
·For separator winder (separation membrane). The specification is any thickness. The use is to wind the separator that serves as the separation membrane between the cathode and anode of the secondary battery.
·For electrode winder. The specification is any thickness. The use is to wind the electrode that serves as the active material of the secondary battery.
Target Industries & Winding Applications
Due to their exceptional durability and high reusable lifecycle, Haikuo fiberglass core tubes are widely adopted across high-end processing industries:
- Electronic Copper Foil Manufacturing: Specialized winding for ultra-thin electrolytic copper foil used in multilayer PCBs.
- Lithium Battery Supply Chain: Heavy-duty core rollers for battery anode/cathode foils and separator films.
- High-Precision Film Conversions: Optical films, solar panel protective films, and metalized packaging foils.
- Alloys & Aluminum Foils: Reusable winding shafts for thin-gauge metal foils requiring high linear tension control.
Advanced Manufacturing and Reusable Lifecycle
Each individual winding tube undergoes rigorous balancing, straightness verification, and hardness testing in our modern production facility. Because Haikuo composite tubes do not splinter, crack, or deform over time, they serve as excellent reusable cores, drastically lowering your company’s long-term operational costs and supply-chain waste compared to disposable cardboard or fragile plastic alternatives.
Technical Summary & Engineering Insights
Executive Summary: Haikuo high-precision FRP (Fiberglass Reinforced Plastic) core tubes are engineered to deliver ultimate radial compression strength and zero structural deformation for elite industrial winding applications, particularly within electronic-grade copper foil and lithium-ion battery separator production lines. Utilizing advanced continuous composite processing, these premium fiberglass core tubes easily withstand the immense crushing pressures exerted by high-tension foil winding, successfully preventing material wrinkling and edge misalignment. Unlike fragile cardboard cores or heavy, high-maintenance metal rollers, Haikuo composite winding tubes offer absolute chemical immunity, an ultra-smooth ground surface finish, and a highly reusable engineering lifecycle. They are fully customizable in dimensions, wall thicknesses, and specialized anti-static formulations, serving as the definitive global standard for modern high-speed, zero-defect foil processing industries.
| Critical Winding Parameters | Haikuo FRP Core Tube | Industrial Cardboard Core | Aluminum/Steel Rollers |
|---|---|---|---|
| Radial Crushing Resistance | Ultra-High (≥135 Mpa) | Extremely Low (Collapses easily) | High (Subject to permanent bending) |
| Moisture & Chemical Immunity | 100% Waterproof & Chemical Resistant | Deforms/Swells in humidity | Corrodes and rusts over time |
| Surface Smoothness Rating | Precision Polished (Zero foil wrinkles) | Rough (Causes internal foil damage) | Good (Easily scratched or dented) |
| Thermal Expansion Control | Negligible (Stable under heat) | Poor (Degrades with temperature) | High (Warps during heat processes) |
| Reusable Engineering Lifecycle | Infinite Reuses (Zero splintering) | Disposable Single-Use | Reusable but heavy to transport |
Targeted Product FAQ
Q1: Why is a specialized frp core tube superior to standard cardboard cores for copper foil winding?
A1: High-precision electronic copper foil requires extreme winding tension to prevent layers from shifting. Traditional cardboard cores absorb ambient moisture and structural pressure, leading to inner diameter collapse and foil wrinkling. Our industrial frp core tube delivers monumental radial strength and zero thermal warping, ensuring that the first layer of foil is as pristine as the last, which seamlessly integrates with other critical pultruded fiberglass profiles on your machinery.
Q2: What surface finish treatments does Haikuo offer to protect fragile winding foils?
A2: Every fiberglass core tube destined for high-end copper foil or optical film production undergoes a meticulous outer diameter centerless grinding and polishing procedure. This removes all micro-ridges and fiber protrusions, resulting in a mirror-like finish that eliminates material indentation, scratching, or structural deformation during ultra-high-speed rolling processes.
Q3: How does the chemical immunity of fiberglass winding cores reduce long-term operational costs?
A3: In lithium battery film and metal foil processing, tools are frequently exposed to cleaning solvents, industrial oils, and varying relative humidity levels. Our premium polymer matrix ensures that the winding shafts never rust, corrode, or degrade over centuries. This total immunity allows you to reuse the exact same core tube thousands of times without failure, significantly undercutting your overhead expenses.
Q4: Can Haikuo manufacture anti-static or conductive composite winding tubes?
A4: Yes, we specialize in high-performance electrical formulations. For dust-free cleanroom environments or environments handling combustible electronic components, we can add high-grade conductive carbon black or specialized anti-static agents to the resin bath. This reduces surface resistivity and prevents static buildup during lightning-fast roll changes.
Q5: What dimensional custom tolerances can your factory guarantee for heavy-duty winding runs?
A5: As a pioneering industrial manufacturer, Haikuo holds an incredibly tight grip over structural execution. We guarantee inner and outer diameter tolerances within ±0.1mm and straightness indexes under 0.5mm per meter. If your production machinery relies on precise mechanical chucks or expanding shafts, we recommend contacting our tech consultants to align your drawings with our extensive catalog of specialized pultruded fiberglass profiles and composite roll solutions.
Production Process
Pultrusion Profile Equipment
Fiberglass placed on a shelf
Profile mold debugging
Profile cutting
Profile punching
Profile cutting details control
Profile inspection
Profile packaging
Certificate
FAQ
01- Are you Trading Company or Manufacturing Factory?
We are both manufacturer trading and company. We have our own factory and we have better service ofoverseas customers. Welcome to send your inquiry!
02- I am interested in your products, could I get sample for free?
We can supply a few pieces FREE samples if we have some in stock, and you only need to pay the freight cost by yourself. Welcome to send your inquiry for FREE samples!
03- How about the Delivery time?
10-15days after receiving the deposit based on the MOQ. Normally, 30-35days to finish the order for a 20ft container. Welcome to ask for the detailed delivery time according to your order quantity!
04- How can you guarantee the product quality?
Our whole production lines and products have been certificated by IS09001:2015, and it’s been followed strictly. We also have the professional QC team, and each our package worker will be in charge of the final inspection according to the QC instruction before packing.
05- What is about the payment terms.
Basically, the payment terms areT/T,L/C at sight. Western Union, Paypal, Moneygram, Alipay Credit card are acceptableforsample order.
06- Can you do OEM for me?
We accept all OEM orders,just contact us and give me your design,we will offer you a reasonable price ASAP.