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Extrusion Lamination Machine
Extrusion Lamination Machine
Suitable for lamination and coating of various material including paper, aluminum foils, plastic film, and more.extrusion lamination machine These extrusion lamination machines are ideal for producing packaging materials that require a high level of durability and strength. They can also be used to produce multilayer flexible packaging products. The specialized equipment is designed to perform the process online and can carry out many functions like automatic film connection, tension control, and deviation rectification.
The molten resin is coated on the surface of one or more substrates, which are then rolled and pressed together.extrusion lamination machine The adhesive layer bonds the two layers to form a single, unified flexible product. The adhesive can be applied to the molten polymer while it is still hot or can be applied to the finished film. In the latter case, it is often used as an adhesive to seal the flexible film to a carton or other packaging structure.
There are several types of extrusion coating lines for the manufacturing of multi-layer flexible films for a variety of purposes and applications, including food, medical, and retail packaging.extrusion lamination machine Some of these coating lines include co-extrusion and meltblown extrusion. In this method of coating, a hot layer of molten polymer is extruded through computer-controlled dies that feature advanced gauge controls (nuclear gauge monitoring and automatic profile control). The resulting layer of molten resin can bond to the second layer of the film.
Gajjar Engineering offers a range of solventless extrusion coating and lamination machine that is considered economical in investment and very simple to operate and maintain. The machine is capable of handling a wide range of work such as posters, greeting cards, book titles, card board cartons, and more. It is ideal for small type jobs and can easily accommodate changes in the working conditions.
In the case of the gable-top cartons mentioned above, the initial motivation for extrusion-coated films was to provide wet strength and insect resistance. However, it soon became clear that the coating could be used as an adhesive to seal the cartons, and to reduce costs by eliminating the need for expensive wax dipping.
An additional advantage of the new technique was that it allowed the use of higher-density polyethylene for coating, which yielded stronger film while reducing the thickness of the substrate. This resulted in improved printability and permeability, and it was also easier to recycle than the prior use of low-density polyethylene for gable-top cartons.
Extrusion lamination is now used to manufacture a vast array of flexible films, from food packaging for the retail and food processing industries to non-food packaging for the electronics, textile, construction, and transportation industries. In addition, it is used for manufacturing breathable and insulating films for hygiene applications and for the protection of goods in transit. In addition to traditional adhesive lamination, the extrusion process can be combined with other techniques such as solvent and hot melt lamination or with co-extrusion. In such cases, the resulting multi-layer flexible packaging is known as a hybrid adhesive/extrusion film.
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