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Heavy-Duty Knife Coater for High-Viscosity Coatings | Fully Customizable Knife-Over-Roll Coating Machine
Detalhes do produto:
| Lugar de origem: | China |
| Marca: | OSMANUV |
| Certificação: | ISO9001 |
| Número do modelo: | Especificação |
Condições de Pagamento e Envio:
| Quantidade de ordem mínima: | 1 conjunto |
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| Preço: | Negociável |
| Detalhes da embalagem: | Embalagem de madeira |
| Tempo de entrega: | 30-45 dias |
| Termos de pagamento: | T/T |
| Habilidade da fonte: | Negociação |
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Informação detalhada |
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| Tensão: | 220V, 380V, 380V/220V, 220V/380V, 380V/50HZ | Doença: | Novo |
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| Nome do produto: | Máquina de revestimento uv pequena SGUV-650 com largura de revestimento 630mm, máquina de revestimen | Velocidade de revestimento: | Ajustável, 150-500m2/h, 0-5 metros/min, 2,5m/min, pode ser definido sozinho |
| Cor: | Você pode decidir, arco-íris e assim por diante, dourado, personalizado, tira | Largura do revestimento: | 650 mm, revestimento de 910 mm, 440 mm |
| Uso: | Máquina de revestimento uv localizada, impressões digitais protegem | Material: | PP, material laser autoadesivo, vidro de garrafa, metal, PVC |
| Destacar: | Heavy-duty knife coater machine,Customizable knife-over-roll coater,UV coating machine for high-viscosity |
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Descrição de produto
Heavy-Duty Knife Coater for High-Viscosity Coatings | Knife-Over-Roll Coating Machine for Rubber, Adhesive & PVC – Customizable
Product Overview
A knife coater (also known as a knife-over-roll coater or doctor blade coater) is a versatile coating machine that applies a precise, controlled layer of liquid or paste-like material onto a moving substrate. The coating thickness is determined by the gap between a doctor blade (knife) and a backing roller or the substrate itself.
This technology is ideal for high-viscosity coatings (500 - 100,000+ cP) that cannot be easily applied by roller or curtain coaters. Typical coating materials include:
- Adhesives (PSA, hot melt, solvent-based)
- PVC paste (plastisol)
- Rubber compounds (latex, SBR, natural rubber)
- Battery electrode slurries (anode/cathode)
- Ceramic slurries
- Flame retardant coatings for textiles
- PU (polyurethane) coatings
- Silicone release coatings
Key advantages include:
- Wide viscosity range (from low to extremely high)
- Heavy coating weight capability (up to several hundred microns wet)
- Simple, robust design - easy to clean and maintain
- Excellent coating uniformity across full width
- Low maintenance cost compared to slot-die or extrusion coaters
Our knife coater is fully customizable for coating width, viscosity range, coating thickness, drying method, and substrate type (paper, film, foil, textile, nonwoven, metal foil, or rubber sheet).
Technical Specifications
| Parameter | Standard Range | Customizable Option |
|---|---|---|
| Coating Width | 500 mm / 1000 mm / 1300 mm / 1600 mm | ✔ Yes (up to 3000 mm) |
| Line Speed | 5 - 50 m/min (standard) | ✔ Yes (up to 150 m/min) |
| Coating Thickness (wet) | 20 - 500 µm | ✔ Yes (up to 2000 µm) |
| Viscosity Range | 500 - 50,000 cP | ✔ Yes (up to 200,000 cP with heating) |
| Substrate Type | Paper, film, nonwoven, textile, foil, rubber sheet | ✔ Yes (any flexible material) |
| Substrate Thickness | 0.02 mm - 5 mm | ✔ Yes |
| Knife Type | Knife-over-roll, air knife, floating knife | ✔ Yes (interchangeable) |
| Backing Roller | Chrome-plated steel / rubber-coated / stainless steel | ✔ Yes |
| Coating Material | Adhesive, PVC, latex, PU, ceramic slurry, battery paste | ✔ Yes |
| Drying Method | Hot air (electric/gas) / IR / UV | ✔ Yes (multi-zone custom) |
| Tension Control | Open-loop / closed-loop load cells | ✔ Yes |
| Power Supply | 380V / 400V / 415V, 50/60Hz, 3-phase | ✔ Yes (custom voltage) |
| Control Type | PLC + HMI touchscreen | ✔ Yes (remote control optional) |
Applications
- Battery manufacturing: electrode coating (lithium-ion anode/cathode slurries)
- Adhesive tape & label: PSA (pressure-sensitive adhesive) coating on release liner
- Textile & nonwoven: flame retardant, PU coating, latex backing, waterproofing
- PVC flooring & artificial leather: PVC paste coating on fabric or release paper
- Rubber sheet & gasket: rubber compound coating on fabric or release film
- Ceramic & green tape: ceramic slurry coating for multilayer capacitors (MLCC)
- Paper & packaging: silicone release coating, hot melt adhesive coating
- Construction materials: asphalt / bitumen coating for roofing membranes
Customization Options
We offer complete customization for the knife coating machine:
- Working width: from 300 mm (lab/pilot) to 3000 mm (industrial)
- Knife type: knife-over-roll, air knife, floating knife, or knife-on-blanket (customizable per coating material)
- Backing roller material and hardness (chrome, rubber, stainless steel)
- Coating head positioning: manual micrometer or automatic servo-controlled gap adjustment
- Drying oven: length, number of zones, heating method (electric/gas IR + hot air)
- Web path: horizontal, vertical, or combination
- Cleanroom class (ISO 5/7/8) for battery or medical applications
- Explosion-proof design for solvent-based coatings
- Integration with upstream (mixing, degassing) and downstream (slitting, laminating) equipment
- Automatic viscosity control with inline viscometer
- Edge masking system for stripe coating
Key Features
- Precision gap control - repeatable coating thickness to ±1-3 microns
- Heavy coating weight capability - up to 2000 µm wet (customizable)
- Wide viscosity range - from 500 cP to 200,000+ cP with heated knife/roller
- Quick knife change - for different coating materials or thickness ranges
- Easy cleaning - knife and backing roller accessible from both sides
- Automatic thickness feedback (optional) - closed-loop control via online gauge
- Heated backing roller (optional) - for hot melt or temperature-sensitive coatings
- Low coating waste - minimal startup and edge loss
- Sturdy construction - heavy-duty frame for vibration-free operation
- Recipe storage - recall coating parameters (gap, speed, temperature, tension) for different products
Support and Services
- Free coating trials - we test your material in our lab on a pilot knife coater
- Process optimization support - we recommend knife type, gap, speed, and drying parameters
- On-site installation and commissioning (optional)
- Operator and maintenance training (on-site or video)
- 12-month warranty + lifetime remote technical support
- Fast spare parts supply (knives, backing rollers, pumps, thermocouples)
- Annual service contract with preventive maintenance
Frequently Asked Questions
Q: What is the difference between a knife coater and a roller coater?
A: A knife coater is better for high-viscosity, thick coatings (e.g., PVC paste, battery slurry). A roller coater is better for lower viscosity. We can customize either type or combine them.
Q: Can I coat both sides of a substrate?
A: Yes, we offer customizable two-sided (dual-head) knife coaters with sequential or simultaneous coating.
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