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Jwell
Jwell Single Layer or Multi-layer Coating/Casting Film Extrusion Line is a manufacturing process used to produce thin films and coatings for various applications, such as packaging, medical supplies, and industrial products. These films can be made from a variety of polymers, including polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and others. The distinction between single-layer and multi-layer extrusion lines lies in the number of polymer layers the equipment can produce simultaneously.
Single Layer Coating/Casting Film Extrusion Line
Overview
A single layer extrusion line produces films with one homogeneous layer. This type of line is simpler and less expensive than multi-layer lines but has limitations in terms of the properties that can be achieved with the final film. Single-layer films are typically used in applications where basic protection or containment is sufficient.
Components
1. Extruder: The extruder melts and processes the polymer resin.
2. Flat Die: The molten polymer is forced through a flat die to form a thin film.
3. Chill Roll System: The hot film is cooled and solidified by passing over a series of chilled rolls.
4. Winder: The finished film is wound onto rolls for storage and transport.
Advantages
- Lower cost and simpler operation.
- Suitable for basic applications.
- Easier maintenance and lower energy consumption.
Applications
- Agricultural films
- Basic packaging films
- Protective covers
Multi-layer Coating/Casting Film Extrusion Line
Overview
A multi-layer extrusion line produces films with multiple layers, often each with different properties. These layers can be combined to enhance the film’s overall performance, such as improved barrier properties, strength, flexibility, and heat resistance. Multi-layer films are essential in advanced packaging, medical applications, and specialized industrial uses.
Components
1. Multiple Extruders: Each extruder processes a different type of polymer resin.
2. Feed Block or Multi-Manifold Die: The molten polymers from each extruder are combined in a feed block or multi-manifold die to form a composite film with multiple layers.
3. Flat Die: Similar to single-layer lines, but designed to handle multiple layers.
4. Chill Roll System: Used for cooling and solidifying the multi-layer film.
5. Winder: Winding the finished multi-layer film onto rolls.
Advantages
- Enhanced properties by combining different materials.
- Improved barrier properties against gases, moisture, and UV light.
- Greater mechanical strength and durability.
- Potential for functional layers (e.g., adhesive, peelable, printable).
Applications
- High-performance food packaging
- Medical packaging (sterile barriers, drug delivery systems)
- Industrial films (electrical insulation, protective layers)
- Agricultural films with advanced properties
Process Steps in Coating/Casting Film Extrusion
1. Polymer Melting and Mixing: Polymer resins are melted in the extruder(s) and may be mixed with additives to enhance properties.
2. Film Formation: The molten polymer is extruded through a die to form a thin film.
3. Cooling and Solidification: The extruded film is cooled rapidly on chill rolls to prevent crystallization and ensure clarity.
4. Surface Treatment: The film may undergo surface treatments such as corona treatment to improve adhesion and printability.
5. Trimming and Slitting: Edges are trimmed and the film is slit into the desired widths.
6. Winding: The finished film is wound onto rolls for further processing or shipment.
Both single-layer and multi-layer coating/casting film extrusion lines have distinct advantages and applications. Single-layer lines are cost-effective and suitable for simpler products, while multi-layer lines provide enhanced functionalities essential for advanced applications. The choice between single-layer and multi-layer lines depends on the specific requirements of the end product.
| Model | JW90/33, JW45/30 | JW100/33, JW45/30 | JW120/33, JW65/33 |
| Coating Material | LDPE、LLDPE、PP、EVA、EAA、EMAA | ||
| Base Material | BOPP、BOPET、BOPA、CPP、CPE、Paper、Aluminum Foil | ||
| Coating Thickness | Single Layer 5-30μm、Co-extrusion 10-40μm(error ≤±3%) | ||
| Coating Width | 1100mm | 1300mm | 1500mm |
| Roller Diameter | 500mm | 600mm | 700mm |
| Design Line Speed | 150m/min | 180m/min | 250m/min |
| Note: The specifictions are subject to change without prior notice. | |||
JWELL coating film production lines, including milk, liquid asepsis packing film co-extrusion line, high-class digital printing paper extrusion and laminating composite production line,toothpaste sheet extrusion line, pre-coating film and card film extrusion and laminating composite production line, candy and food high barrier packaging material extrusion line, madicine barrier packaging sheet extrusion line, insant noodle coating film production line, papercups and paper food containers drench film machine, single or double sides coating film, single, double or three layers co-extrusion lines.
Jwell Single Layer or Multi-layer Coating/Casting Film Extrusion Line is a manufacturing process used to produce thin films and coatings for various applications, such as packaging, medical supplies, and industrial products. These films can be made from a variety of polymers, including polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and others. The distinction between single-layer and multi-layer extrusion lines lies in the number of polymer layers the equipment can produce simultaneously.
Single Layer Coating/Casting Film Extrusion Line
Overview
A single layer extrusion line produces films with one homogeneous layer. This type of line is simpler and less expensive than multi-layer lines but has limitations in terms of the properties that can be achieved with the final film. Single-layer films are typically used in applications where basic protection or containment is sufficient.
Components
1. Extruder: The extruder melts and processes the polymer resin.
2. Flat Die: The molten polymer is forced through a flat die to form a thin film.
3. Chill Roll System: The hot film is cooled and solidified by passing over a series of chilled rolls.
4. Winder: The finished film is wound onto rolls for storage and transport.
Advantages
- Lower cost and simpler operation.
- Suitable for basic applications.
- Easier maintenance and lower energy consumption.
Applications
- Agricultural films
- Basic packaging films
- Protective covers
Multi-layer Coating/Casting Film Extrusion Line
Overview
A multi-layer extrusion line produces films with multiple layers, often each with different properties. These layers can be combined to enhance the film’s overall performance, such as improved barrier properties, strength, flexibility, and heat resistance. Multi-layer films are essential in advanced packaging, medical applications, and specialized industrial uses.
Components
1. Multiple Extruders: Each extruder processes a different type of polymer resin.
2. Feed Block or Multi-Manifold Die: The molten polymers from each extruder are combined in a feed block or multi-manifold die to form a composite film with multiple layers.
3. Flat Die: Similar to single-layer lines, but designed to handle multiple layers.
4. Chill Roll System: Used for cooling and solidifying the multi-layer film.
5. Winder: Winding the finished multi-layer film onto rolls.
Advantages
- Enhanced properties by combining different materials.
- Improved barrier properties against gases, moisture, and UV light.
- Greater mechanical strength and durability.
- Potential for functional layers (e.g., adhesive, peelable, printable).
Applications
- High-performance food packaging
- Medical packaging (sterile barriers, drug delivery systems)
- Industrial films (electrical insulation, protective layers)
- Agricultural films with advanced properties
Process Steps in Coating/Casting Film Extrusion
1. Polymer Melting and Mixing: Polymer resins are melted in the extruder(s) and may be mixed with additives to enhance properties.
2. Film Formation: The molten polymer is extruded through a die to form a thin film.
3. Cooling and Solidification: The extruded film is cooled rapidly on chill rolls to prevent crystallization and ensure clarity.
4. Surface Treatment: The film may undergo surface treatments such as corona treatment to improve adhesion and printability.
5. Trimming and Slitting: Edges are trimmed and the film is slit into the desired widths.
6. Winding: The finished film is wound onto rolls for further processing or shipment.
Both single-layer and multi-layer coating/casting film extrusion lines have distinct advantages and applications. Single-layer lines are cost-effective and suitable for simpler products, while multi-layer lines provide enhanced functionalities essential for advanced applications. The choice between single-layer and multi-layer lines depends on the specific requirements of the end product.
| Model | JW90/33, JW45/30 | JW100/33, JW45/30 | JW120/33, JW65/33 |
| Coating Material | LDPE、LLDPE、PP、EVA、EAA、EMAA | ||
| Base Material | BOPP、BOPET、BOPA、CPP、CPE、Paper、Aluminum Foil | ||
| Coating Thickness | Single Layer 5-30μm、Co-extrusion 10-40μm(error ≤±3%) | ||
| Coating Width | 1100mm | 1300mm | 1500mm |
| Roller Diameter | 500mm | 600mm | 700mm |
| Design Line Speed | 150m/min | 180m/min | 250m/min |
| Note: The specifictions are subject to change without prior notice. | |||
JWELL coating film production lines, including milk, liquid asepsis packing film co-extrusion line, high-class digital printing paper extrusion and laminating composite production line,toothpaste sheet extrusion line, pre-coating film and card film extrusion and laminating composite production line, candy and food high barrier packaging material extrusion line, madicine barrier packaging sheet extrusion line, insant noodle coating film production line, papercups and paper food containers drench film machine, single or double sides coating film, single, double or three layers co-extrusion lines.
