When heat is used in the packaging process it allows the polyethylene film to shrink and thus adhere to the product or object being wrapped. This provides better protection and a better aesthetic finish to the packaging, allowing you to see what is inside.
At CMB there are several types of machines with a heat wrapping system. One of them is the ERB or shrink-wrapping machine.
It consists of two packaging modules: EB (sealing head) and RB (shrink tunnel). It was designed to work with and optimise industrial packaging with heat shrink film, allowing a visualisation of the final product. A wide variety of products can be protected: any type of furniture, including sofas, wood, mattresses, accessories, textiles… The machine works as follows: it starts by placing the product in the centre of the infeed conveyor table.
The packaging process is done automatically or operated by a foot pedal and then the product passes through a curtain of film sheets which are glued together at their ends. The sealing head descends to seal the film sheet from the top to the bottom, leaving the pack closed at the front and rear ends, but leaving the sides open. When it enters the shrink tunnel chamber, the heat causes the film to shrink and shrink to fit the product, wrapping it and leaving it fully packaged and ready to be handled.