Modern painting line

System solution of the painting line provides the complex solution for the surface treatment issues. Not only surface treatment experts, but also those from air-condition, water – demineralization preparation and wastewater – disposal branches did take part in designing it. The line is operated by a modern control system. We have also closely cooperated with prospective clients, especially those involved in the automotive industry. The line is based on the cutting – edge surface treatment technology available, using principles of electrostatic coating of two – layer powder plastics.

Painted parts

The technology applied in the process enables painting steel and aluminium parts. Maximum parts size is 1300 x 450 x 2500 mm (height x width x length). Series or large – scale production of small parts with a high demand for surface protection seems to be perfect in terms of reaching the excellent level of productivity.

Conveyor

Transport between individual stages of the line is ensured by means of a C-shaped suspension chain conveyor with an open top to reduce a fall – out. Parts for painting are fastened into conductive suspensions that enable electrostatic plastic coating. Optimum devices for parts suspension are designed in cooperation with customers.

Pre – surface protection

The process, secured by spray technology, runs gradually in a tunnel equipped with ten chemical treatment and wash vats. The By-pass system allows different steel and aluminium pre – treatment. Zn – phosphate is used for steel parts pre – treatment while Cr – free conversion is applied for aluminium. To ensure maximum quality and efficientcy of the process we closely cooperate with experts from Henkel Surface Technologies.

Spraying

A “heart” of the system consists of two spraying booth produced by a Swiss company ITW Gema AG. It uses a unique technology of electrostatic coating of two-layer powder plastic; polyester for the first layer and acryl powder plastic for the second.
Polyester plastic coating is carried out in a plastic cyclone-spraying booth. One of its parts-a powder centre is designed to ensure a quick and safe conversion between different colour shades. The device is located in a air – conditioned clean room area that ensures a dust – free operation. Curing is carried out in an A – type oven with indirect heating and circulated air filtration at temperatures up to 230 oC.
Acryl transparent powder plastic is applied in the second booth of the same qualities.Method of powder coating and curing is similar to the abovementioned one.