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Activities

Company given over to colour part painting, thermoplastic
bodywork and assembly.

Means of Production:

• SURFACE SANDING SECTION.
• PART CLEANING SECTION: AUTOMATIC CLEANING.
• PP SURFACE TREATMENT SECTION.
• PART PAINTING SECTION: 2 PRODUCTION INSTALLATIONS.
• PART ASSEMBLY SECTION.
• PART STORAGE SECTION.

SURFACE SANDING SECTION

The Sanding Area is where parts which need to be prepared prior to painting are dealt with.

This process involves surface treatment for materials which pose problems for normal painting processes.

Sanding is performed with automatic sanding machines when part shape permits.

Nooks and crannies which the machines are unable to access are sanded by hand.

The sanding area is located in an independent building so as to prevent any contamination of the painting areas.

PART CLEANING SECTION

Due to high demands in terms of aesthetic quality and the importance of the cleanliness of products which are later to be painted, COLPLAST has an automatic washing tunnel which ensures parts are clean and reduces product handling.

In order to ensure effective cleaning, parts pass through 40ºC water baths with alkaline solutions and a final bath in demineralised water.

This process ensures optimum cleanliness and specification compliance when parts leave the drying oven.

PP SURFACE TREATMENT SECTION

COLPLAST also has great experience treating materials such as PP prior to painting.

And SMC, too. Due to its production without previous surface treatment, this material poses adherence problems which need to be solved through treatment. This treatment consists of Flaming the entire surface to break bonds and activate the surface for painting.

COLPLAST possesses installations for this process and means by which to verify correct flaming by measuring surface tension with dyes.

PART PAINTING SECTION:

Painting preparation:

Parts need to be prepared with solvents and catalysers before paint is applied.

Once the mixture has been made, it is of the utmost importance to make sure that the viscosity obtained complies with the specifications set out.

Correct viscosity is to a great extent the determining factor behind a good application and good product finish.


Paint section lines 1 and 2.

When the part has been treated (both surface treatment and cleaning) and the paint has been mixed, the product can be painted.

Before the application of the colour, a base application (first sizing...) is required. This application improves adherence and colour covering.

The base must be applied properly because if it is not uniform, the application of the colour may be affected.

The process between the priming coat and the colour coat can be performed wet on wet or dry on dry. As the words suggest, one involves applying the two coats one after the other (wet on wet) and the other calls for drying between coats.

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