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Extrusion Compound Laminating Machine
Extrusion Compound Laminating Machine
An extrusion compound laminating machine is a kind of machinery that can laminate different materials with each other. extrusion compound laminating machine This machinery is very useful in the field of the packaging industry because it can combine two materials with each other which have various functions at the same time. For example, the combination of paper and plastic film can make the product more durable and beautiful. Also, it can save a lot of printing costs. In addition, this machinery can reduce the use of organic solvents which are harmful to the environment. Therefore, this kind of machinery is very popular in the market.
Extrusion lamination is a process of joining two or more substrates together with a hot, molten, plastic resin. The raw materials used in this process include plastics, metals, and paper. It is an environmentally friendly alternative to other adhesives and solvent laminations, and it can create multilayer laminates of up to 5 layers. Moreover, the lamination process is able to provide a high-quality finish laminate.
There are several types of extrusion lamination machines available, ranging from single-screw to twin-screw extruders. These machines can also handle a wide range of coating thicknesses. They can be adjusted easily and efficiently to meet customer specifications. Extrusion lamination is very versatile and can be used in a wide variety of applications, including food bags and wraps, pharmaceutical packaging, cosmetics containers, and many more.
The main advantage of this type of lamination is that it uses no solvents. This eliminates the need for toxic chemicals that are used in traditional lamination processes. It is also faster and cheaper than other types of lamination, and it allows for a much wider array of products to be produced. It is also possible to laminate a wide variety of materials together using this method, from metals and plastics to paper and aluminum foil.
In the extrusion coating process, a hot molten polymer (usually LDPE or LLDPE) is forced through a die with a shaped surface to form a thin, flat strip of film plastic. It is then cooled on a chill roll to solidify it. The temperature of the chill roller and the shape of the die are crucial factors in determining how well the melt curtain sticks to the surface of the substrate.
A low adhesion between the substrate and the extruded layer can result in a poor heat seal, whereas a high adhesion level is needed to achieve good wet strength. The chill roll's surface must be smooth to avoid a buildup of melt on the edge of the polymer, and it must be free of any "pocket" patterns or other irregularities that could create defects in the finished product.
In addition to the extrusion coating process, a lamination machine can be equipped with an auto-splicer, which will automatically change the paper rolls in the machine when it is necessary. This is very helpful because it allows the machine to run at high speeds without stopping and rewinding the paper every 8-15 minutes. This can greatly increase the productivity of the machine.
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