Flock has come a long way from its humble beginnings centuries ago. It’s not a question of whether to print or flock, but to combine the best of both technologies. It’s not just the look of flock – from gentle pastel tones to bright glossy colours, but also the feel – from velvety smoothness to brush-like surfaces, which we encounter with pleasant surprise on common and not so common objects in our everyday lives. The optical and haptic properties of flock go even beyond mere decoration and have enabled the flocking process to find a solid position in technical applications as well. This surface finishing technique is not a product of modern times, but goes back many centuries.
The birthplace of flock was in Asia, where for hundreds of years, natural fibres had been bonded onto textiles using resins. From this relatively humble beginning, the current electrostatic flocking process has evolved over the years, conquering even wider fields of application on the way. As unconventional as this technology initially appears, flock can be found everywhere: it is used to improve the feel of a garment; for its positive effect in noise reduction; its ability to equalise tolerance between objects or provide thermal insulation; to provide a better grip on tool handles, to name just a few examples. All these applications can be done on many different types of substrate, such as textiles, plastics, metals, glass, wood, foil and paper.
MECOFLOCK D 280 FLEX is a dispersion-based, one- resp. two-components flocking adhesive. Main application field is the flocking of elastomer and thermoplastic substrates as e.g. EPDM and TPU. Good results can be achieved for the flocking of PVC and other synthetics. In cured condition MECOFLOCK D 280 FLEX has an elastic synthetic-film with good resistances. If there are colour differences between substrate and flock fibre, the adhesive may be dyed with MECOCOLOR D-colouring pastes.
MECOFLOCK D 453/5-09 is a dispersion-based flocking adhesive for spraying, to be used for the flocking of PS (Polystyrene), ABS ( Acrylnitrile-Butadene-Styrene-Terpolymere), SAN (Syrene-Acryl-Nitrile-Co-polymere), wood, chip boards, many metals and other substrates. When cured, the adhesive results in a hard, tenacious adhesive film with high mechanical characteristics and very good waterresistance. By adding of 5% of MECODUR H 5580 a good adherence is achieved even with difficult substrates. The adhesive is dyed black.
MECOFLOCK D 465 is a one-component, dispersion based adhesive for flocking automotive interior. The adhesive can be applied by spraying and is resistant to condensation water.
- resistant to condensation water according to DIN EN ISO 6270-2 CH
- 1-component high-performance flocking adhesive
- excellent adhesion on various substrates
- high solids content
- outstanding spraying properties
- optimized overspray
MECOFLOCK L 835/1 may be used for the flocking of metal and plastic parts requiring high mechanical and chemical resistances, as well as for concrete. The materials to be flocked may require only a limited elasticity, as MECOFLOCK L 835/1 cures into a hard rigid adhesive coat. After curing completely, the adhesive is resistant to water and to grease, oil and acids. MECOFLOCK L 835/1 may be mixed with MECOCOLOR L-colouring pastes if required.
MECOFLOCK L 844/1-08 is a two-component solvent-based adhesive for screen printing, spray- and roller-application used for the flocking of many metals and plastic and various other substrates requiring high quality characteristics when flocked. When completely cured, the adhesive features special resistances to high temperatures of up to 160° C. It is fast to water and oil, grease and acid.
MECOFLOCK L 856 is a one-component solvent based flocking adhesive for the spray- and brush application. It is mainly used for the flocking of rubber profiles (i.e. EPDM) in the car industry. Also, good results are achieved with the flocking of PVC and other plastic. Once it is cured, MECOFLOCK L 856 forms an elastic adhesive film with good abrasion resistancies. If the colour of the substrate and the flock colour differs, the adhesive may be dyed with MECOLOR L-colouring agents.
MECOFLOCK L 860 is a two-component solvent-based adhesive for spray- and roller-application used for the flocking of many metals and plastic and various other substrates requiring high quality characteristics when flocked. When completely cured, the adhesive features special resistances to high temperatures of up to 160° C. It is fast to water and oil, grease and acid.
MECOFLOCK D 340/1-01 is a screenable, white-coloured dispersion-based adhesive especially suitable for the manufacturing of flock transfers. It connects excellently with the flock coat of the transferflockpaper as well as with the sprinkled-on MECOMELT hot melt powder. When using it with MECOMELT 1795 F and MECOMELT 2595 G, one receives a washing fastness of up to 95° C as well as a chemical cleaning fastness. When using MECOMELT 2060 F, the washing fastness comes to 60° C, the chemical cleaning fastness remains the same.
MECOFLOCK D 404 is a screenable, dispersion-based two-components flocking adhesive to be used for the direct-motif-flocking onto textiles. MECOFLOCK D 404 may be used for the manual screen printing as well as for automatic screen printing carousels. After curing completely, the flocked parts, depending on the used textiles and flock type, have very good wash- and dry-clean-resistance. To achieve an evenly shiny flocking, the adhesive may be dyed in the resp. flock colours.
MECOFLOCK D 540 is a two-components dispersion-based flocking adhesive for spraying, for rolling and for the use with a squeegee to flock polyurethane-soft foam. When cured, the adhesive results in a soft, elastic glutinous adhesive film with high resistances to water and UV light. If there are colour differences between substrate and flock, the adhesive may be coloured with MECOCOLOUR-D colour pastes.
MECOFLOCK D 545 is a sprayable, two components, dispersion-based adhesive for the flocking of foam material (i.e. PES, PUR) with different pore-sizes. The main application area is the flocking of foam rollers and foam pads (paint rollers and paint pads). After completely curing, MECOFLOCK D 545 is resistant to those cleaning agents usually used in the paint- and finishing industry (terpentine replacement, nitro-dilution, brush cleaners). If there are colour differences between substrate and flock, the adhesive may be dyed with MECOCOLOR D-colour pastes (by adding 2 to 4 %).
MECOPLUS 4274 RE-L may be used to dilute a lot of adhesives. Details for the quantity to be added resp. to the type of adhesives, please see in the technical information of the resp. adhesive. Apart from this, MECOPLUS 4274 RE-L may also be used for the cleaning of adhesive residues as well as brush cleaner.
MECOCOLOR L-colouring pastes are intensively dyeing pigment pastes to dye adhesives based on solvents. Normally, a good compatibility exists between the products of our MECOFLOCK L-, MECOTEC L and MECOSAN L-assortment. Especially with flocking adhesives, where the necessity exists to dye the adhesive in the colour of the flock shade, the MECOCOLOR L-colouring pastes are being used all the time. For those applications, the individual colouring pastes are sufficiently migrating resistant and fast to light and weather.
MECOCOLOR L-Colouring Pastes are available in the following colours:
- L 01: Colourpaste white
- L 03: Colourpaste yellow
- L 04: Colourpaste red
- L 05: Colourpaste blue
- L 09: Colourpaste black
- L 13: Colourpaste green
PREGAN 1014 E is a water emulsifiable solvent mixture for the removal of many printing inks, dried pigment printing pastes, pressure sensitive and flock adhesives, solder pastes and non-hardened solder resists. Dried solvent based printing inks can quickly be dissolved, dispersion based products swell and can be removed from the screen using a strong water jet. Despite its high efficiency, PREGAN 1014 E has very little attack on photoemulsions.
What is flock? Flock can be defined as short fibres, which have been cut from monofilament yarn, made from polyester, polyamide or viscose. In electrostatic flocking, millions of these short-cut fibres are fired in an electromagnetic field into a substrate coated with adhesive. The electrical charge causes the fibre to embed itself more or less vertically into the adhesive and thus provide a uniform textile-like surface.
Depending on the area of application and choice of adhesive, the flocked surface can be highly durable and very resistant to abrasion.
Flock fibres are available in various lengths and thicknesses, which are classified both in mm (for the length) and the so-called decitex (dtex) value (for the diameter). Simply put, one can say that the longer and thinner the fibre, the softer the surface; the shorter and thicker the fibre, the more brush-like. The choice of the flock length and thickness determines the primary optical and tactile effects.
Areas of flocking
There are two distinct areas of flocking and we differentiate between all-over and partial flocking.
On the so called all-over flocking, the substrate surface is completely covered with adhesive and using automatic flocking units, a uniform flock surface is achieved. This is typically used for manufacturing high-quality and durable upholstery fabrics.
Partial flocking can be done using a masking process, but this is usually costly and difficult and therefore is only economical for one-off items. For larger quantities, the process of choice is screenprinting, which offers the advantage that it can be used both for flat substrates and three-dimensional parts, as the adhesive can be selectively printed, thus allowing unique designs to be created.
There are several different adhesive systems for processing flock. These range from solvent-based and water-based, to single and two-component adhesives. The selection of an adhesive depends on the type of substrate to be flocked and what effects are required to be achieved.
The systems for applying flock range from simple to advanced and automated systems. There are simple manual flocking units, which are suitable for small and medium size runs. For advanced use, there are modules which can be integrated into fully automated systems. These latter systems enable even long runs to be produced economically and reasonably priced.
We are happy to help with any questions you may have about flocking, please give us a call using +49 6222 578-169 or write to firstname.lastname@example.org .