Contract coating

Substrate and carrier from the technical textiles industry

CaPlast processes many substrates (supporting materials) for companies in the technical textiles industry, who in collaboration with CaPlast, or by themselves, have developed unique products and require them to receive a coating or lamination. This includes substrates from a wide variety of fields, such as membranes, multiple or single filament fabrics, (aluminium) films, non-woven materials, paper and flexible composites. CaPlast adds value to these products on an individual basis and in quite varied ways, for example through a mono-extrusion or co-extrusion of a composite coating, so that the supplied materials can be built up with single-sided or double-sided multiple layers to meet the necessary requirements.

The spectrum ranges from simple, one-sided PE or PP coatings to complex products for agricultural applications or use in the military field. Also crucial here is the individual design of each product. Specific product requirements are obtained and constructed in several coating layers that impart, for example, light-tightness and opaqueness, UV and infrared absorption, antibacterial coatings or special dyes. Through a high degree of flexibility, know-how and technical possibilities, seemingly impossible tasks can also be reliably produced. Even difficult polyolefin layers, which provide severe challenges to the chemical requirements during extrusion coating, can be transformed into a product through use of adhesion promoters. Other adhesion improvers available for use during production are substrate warming by preheating rollers, corona pretreatment and infrared warming of the substrate. The coated product can also be easily post-treated with corona treatment so that it can be used for further processing with improved adhesion. The individual end product can be optimised even further during the extrusion process by being co-laminated with additional fabrics or films in the product. Thus, coatings up to 3.5 m wide are possible in various layer thicknesses - from around 10 g/m2 up to 1200 g/m2. A similarly wide range of substrates is also possible, so that there are almost no limits to the design.

In the production process, the substrate and coating thicknesses are continuously measured using a non-contact technique. This difference measurement allows direct control of the automatic nozzle, if necessary, and thus adjustment of the coating thickness. The process control, together with the storage of the batch weight and recipe data, allows complete traceability of the coating quality.

Technical details

Substrate (flexible)   →   15 to 1200 gm/m2
(Co-) extrusion weight   →   10 to 1200 gm/m2
Coating width   →   1.00 to 3.5 metres
Minimum quantities per production batch   →   Small-scale plant from 10,000 m    |    Large-scale plant from 20,000 m