Double Layers Extrusion Coating Machine

Double Layers Extrusion Coating Machine

The double layers extrusion coating machine is a high-precision film production line for laminating and coating.double layers extrusion coating machine It is a popular tool for the food packaging industry. It can handle a variety of materials, including BOPP, BOPET, PET and CPP laminations. It also works well with aluminum foils. Its running speed is maintained at a high level, making it efficient and reliable. It is the perfect choice for producing thin film products. The machine can be used for a wide range of applications, from making sacks to wrapping paper.

The process of extrusion coating is a multi-step manufacturing method in which the resins, such as polyethylene, ethylene vinyl acetate copolymers and polypropylene are melted and formed into a hot plastic strip or web. The melt is then coated onto a substrate such as film, metal or paper. The resulting laminated film is then quenched on a chill roll similar to a cast film process.

This process is a very flexible manufacturing method and is used by a wide variety of manufacturers. Its versatility makes it a highly sought after manufacturing technology for the packaging industry. It is also commonly used to create breathable films for hygiene, construction and textile applications. The high-performance extrusion coating lines that SML manufactures are the ideal solution for this process, offering precision, reliability and stability.

Dispersion and extrusion coating are two separate processing steps that can be combined into a tandem process to produce a multilayer structure with enhanced barrier properties. This allows for significant time and resource savings compared to the separately conducted processes. This study presents a demonstration of the tandem coating process on a pilot scale with both sustainable and traditional materials.

The layer structures of the samples were evaluated with microscopy imaging, pinhole measurement and barrier measurements, such as oxygen, water vapor and grease permeation. The results show that tandem coated samples perform better than the single layer of the sustainable materials alone and significantly higher than traditional materials. The improved barrier performance is attributed to the extrusion coating layer filling the pinholes and blocking the permeation pathways of the dispersion coating layer.

SML’s newest generation of double-layer extrusion coating machines are designed to meet the specific needs of various industries, from food and sanitary packaging to medical and pharmaceutical applications. These lines provide a wide variety of benefits, such as automatic film connection and tension control, digital control of polar tension and constant tension coating, as well as temperature and humidity control. The machines feature an Omron PLC control system and advanced automation systems, making them an excellent option for high-performance and cost-efficient extrusion coating applications. Moreover, they can be customized according to the customer’s specific requirements. This ensures that the equipment is fully functional and durable, even in demanding conditions.

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