John Wood & Associates - TPS Scattering Units

John Wood & Associates Ltd

Agents and Consultants

Technology Driven Solutions

Scattering materials
Bulk material of grain size 80µm - 2mm (e.g. powder, mica, glittering particles, chips, flakes, granules, fibre balls, sand, carbon particles, glass, corundum, fine flakes)

Fields of application
• hot-melt-type adhesive coating and lamination
• decorative surface coating for floorings, wall and ceiling coverings
• impregnation
• surface finishing, e.g. abrasion, wear, safety
• dispersion of carbon particles, e.g. for various kinds of filters
• consolidation of materials

Precision scattering machine for fibrous materials ('Fibres scatter coater')

Brochures

Scattering Oscillating Brush	Scattering Rotary Brush	Scattering Rotary Screen	Scattering For Fibres	Double Belt Press Technology	Thermofix Technology Centre	TPS General Brochure

Visit their website: www.tps-technopartner.de	*Scattering Units*	Precision scattering machine with oscillating brush system ('Powder scatter coater') Scattering materials Bulk material of grain size 80µm - 2mm (e.g. powder, mica, glittering particles, chips, flakes, granules, fibre balls, sand, carbon particles, glass, corundum, fine flakes) Fields of application • hot-melt-type adhesive coating and lamination • decorative surface coating for floorings, wall and ceiling coverings • impregnation • surface finishing, e.g. abrasion, wear, safety • dispersion of carbon particles, e.g. for various kinds of filters • consolidation of materials
		Principle of operation The funnel-shaped charging hopper [1] is supplied with the bulk material by means of suction or worm conveyors. Inside the charging hopper the bulk material is uniformly distributed and the level is kept constant during the scattering process. Cavity formation and decomposition of the material is avoided through a special mixer. The rotary metering roller [2] is fixed to the bottom side of the charging hopper. The size of the cells of the metering roller are selected according to the grain size of the bulk material. The bulk material is picked up by the metering roller and stripped at a flexible doctor blade [3]. After that the accurately dosed bulk material is conveyed to an oscillating brushing device [4]. Following the brushing process the bulk material will be examined and transferred to the subjacent substrate line. Possibility of modification By means of a supplementary set the oscillating brushing device can be modified into a rotating brushing device. Thus the scatter coater is functioning as a Granules scattering unit.
		Precision scattering machine with rotating brush system ('Granules scatter coater') Scattering materials Bulk material of grain size 0,8 - 20mm (e.g. flakes, chips, granules, ball yarn, sand, carbon particles, glass, corundum, fine flakes) Fields of application • homogeneous and heterogeneous products, e.g. floorings • decorative surface coating for floorings, wall and ceiling coverings • surface finishing, e.g. abrasion, wear, safety • dispersion of carbon particles, e.g. for various kinds of filters • consolidation of materials
		Principle of operation The funnel-shaped charging hopper [1] is supplied with the bulk material by means of suction or worm conveyors. Inside the charging hopper the bulk material is uniformly distributed and the level is kept constant during the scattering process. Cavity formation and decomposition of the material is avoided through a special mixer. The rotary metering roller [2] is fixed to the bottom side of the charging hopper. The size of the cells of the metering roller are selected according to the grain size of the bulk material. The bulk material is picked up by the metering roller and stripped at a notched rigid doctor blade [3]; depending on the type, the doctor blade is split up in adjustable segments. After that the accurately dosed bulk material is conveyed to an rotating brushing device [4]. The direction of rotation is product-bound, the brushing device can work in both directions, i.e. in running direction of the metering roller or in reversed direction. If working in reversed direction (see photo) the bulk material is directly transferred to the subjacent substrate line respectively a conveyor belt. If working in running direction (see drawing) the bulk material is subject to a rotation through 180° in a mask [5] through centrifugal force and from there the bulk material is evenly sliding onto the subjacent substrate line respectively a conveyor belt. Possibility of modification By means of a supplementary set the rotary brushing device can be modified into a oscillating brushing device. Thus the scatter coater is functioning as a Powder scattering unit.
		Precision scattering machine with rotary screen ('Screen scatter coater') Scattering materials Bulk material of grain size fraction 30µm - 3mm (e.g. powder, mica, glittering particles, chips, flakes, glass, semolina, sesame) Fields of application • decorative surface coating for floorings, wall and ceiling coverings • surface finishing, e.g. abrasion, wear, safety • food industry, e.g. bakery
		Principle of operation Through a closed feeding tube [1] with integrated worm screw the scattering material is conveyed to the rotary screen [2] all along the worm screw. At the bottom side of the feeding tube there are adjustable material outlets which guarantee the determined, even and continuous flow of materials onto the specially designed doctor blade [3]. This internal doctor blade pushes the material through the screen holes and so the material is flowing onto the subjacent substrate line in accordance with the screen pattern. This scattering method is analogue to the normal colour screen printing technology and is also suitable for scattering in register.
		Precision scattering machine for repeating pattern ('Scattering in register') Scattering materials Bulk material of grain size 30µm - 3mm (e.g. powder, mica, glittering particles, chips, flakes, granules, glass) Fields of application • decorative surface coating for floorings, wall and ceiling coverings Principle of operation At least two rotary screen scattering machines arranged in tandem are working in synchronous operation to produce a given pattern. For complex patterns up to 8 scattering units in serial mounting can be used.

		Precision scattering machine for fibrous materials ('Fibres scatter coater') Scattering materials Fibres up to a size of approx. 8mm as well as fluffs Fields of application • Automotive industry • Textile industry • Recycling industry • Construction industry
		Principle of operation By means of suction or feed screw devices the fibre material is conveyed to a hopper [1] with vertical sidewalls. The fibre material is evenly distributed inside the feeding hopper and the level is kept constant during the scattering process. For scattering materials which tend to cavity formation (bridging) due to their flow properties an agitator [2] has been installed. The fibre material is taken up by the metering roller (scattering roller) [3] and stripped at a rigid doctor blade [4]. A specially designed roller with rotating and traversing paddles which is mounted above the scattering roller keeps the material moving thus ensuring that the material is conveyed to the doctor blade and is deposited there as best as possible. Then the fibre material will be conveyed by the scattering roller to a rotary brush roller [5]. By means of a special brush roller which is working in opposite direction the fibre material is directly deposited onto the substrate respectively a conveyor belt travelling underneath.