Application process

plastic coatings

01.

Plastic coatings on large metal pipes

R.P. Rivestimenti Plastici S.r.l. uses “Rilsan fine powders” for plastic coatings on large metal pipes.

This product has become among the most used high-performance powder coatings in the world, with long-standing experience in this field.

As with all other plastic coatings, maximum efficiency can only be achieved through correct pre-treatment of the metal and control of the application processes.

R.P. guarantees the right application process in all its parts and has been certified by parent company Arkema France® as product applicator.

R.P. Rivestimenti Plastici S.r.l. supplies treatments which are capable to solve corrosion issues coming from galvanic currents, acid agents, abrasion, ...

R.P. Rivestimenti Plastici S.r.l. is capable to carry out treatments on large pipes (diameter up to 50 cm for a maximum length of 3 m).

All parts to be painted are examined to identify material and manufacturing defects that could make them unfit for coating.
If necessary, all the objects to be coated are degreased to remove all the solid oil and grease residues on the surface.

Sanding treatments on metals, carried out on structures and components of any type, are preliminary operations to painting and laying anti corrosion substances. Said treatments are required for a deep cleaning of the surfaces intended for removing all those residual substances such as oxides, salts, rust and scale which may prevent an optimal grip of the subsequently applied coatings. The sanding treatment is performed using manual or automatic systems which shoot at high speed a metal abrasive agent consisting of steel or other material granules having different dimensions.

R.P. Rivestimenti Plastici S.r.l. performs sanding treatments also on behalf of third parties.

All components that must be coated must first be sanded, the type of inert used is in metallic granules with sharp edges.
After sanding, all parts that must be treated are placed in a dry environment for the entire period.
All areas that do not need to be treated (openings) are protected during sanding by rubber masks and special protections.

The sanding treatment performed by R.P. Rivestimenti Plastici S.r.l. guarantees achievement of the correct roughness for the maximum quantity on the anchor points to obtain a good seal of coatings.

The primer is laid after sanding on clean and dust-free surfaces.
All surfaces are sprayed with a quality primer in order to obtain a continuous film once dry. The pieces must be treated individually and cannot be stacked. Application is carried out by means of a conventional or electro static spray gun.
This process is necessary to ensure maximum coating adhesion.

Heating is carried out in ovens equipped with temperature control indicators/devices which are able to control the temperature ranges required by the plastic coating manufacturer.

R.P. Rivestimenti Plastici S.r.l. performs the application process by submerging the part in a fluidised bed. The preheated part is immersed in the Rilsan® powder for a few seconds in order to obtain the desired coating thickness. This process produces a smooth, even-coloured, fully melted surface and an imperfection-free coating.

All items are checked using a scintillometer to prevent holes and ensure perfect coating. The coated component is cooled to room temperature and inspected before packing.

For identification purposes and upon request by the customer, a double plastic coating treatment can be carried out: Internal and external coating in Rilsan® grey for RAL7040 food Extra outer Rilsan® covering in a colour to be agreed upon according to requests.

Metal coating and painting

Special processing: nautical industry

Preliminary treatments

Plastic coatings on large metal pipes

Metal coating and painting

Special processing: nautical industry

Preliminary treatments

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