Coating
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Finlam Technical has a diverse range of Coating Technologies and capabilities.
A knife is set at a specific gap over a roller. The size of the gap, viscosity of the paste, angle and profile of the knife, and the speed of the line, all contribute to the amount of chemical add-on.
A knife is positioned over “air”. The fabric is supported by either rollers on either side of the knife, or by a table. The tension of the fabric, viscosity of the paste, angle and profile of the knife, and the speed of the line, all contribute to the amount of chemical add-on.
A roller, rotating in the opposite direction to the fabric, is used to apply chemical to the surface of a fabric.
This process is similar to Knife Over Roller coating, but instead of coating the fabric with a paste, a foam is used. This is generally used for open or stretchable fabrics. The finished product usually exhibits a softer handle fabric than a paste coat, as the chemical tends to sit on top of the fabric and there is very little penetration. The finished product is usually air permeable and therefore is not a good technique for waterproofing of fabrics, but is suitable for filtration products.
Hot melt is applied directly to the surface of a fabric. Usually used in stiffeners for the footwear industry.
