SIEMPELKAMP MASCHINENFABRIK GMBH

The particleboard forming line consists of machines for forming and monitoring the particle mat. Additional devices for quality monitoring complete the function of Siempelkamp’s forming line. The plant modules can be adjusted to the respective requirements thus preparing the mat optimally for its compaction in a ContiRoll®. The equipment is designed to produce board thicknesses between 6 and 40 mm without any problem. A typical particle mat former consists of one or two mechanical mat formers for the core layer and two wind sifters for the top and the rear surfaces. The three-layer particleboard thus produced distinguishes by a homogeneous, core layer consisting of coarse particles and two surface layers, the particle size of which is decreasing from the core to the outer faces.

Wind formers convey especially ne particles to the top faces, thus creating ne board surfaces. This is because ner particles are conveyed much farther in an air ow than coarser ones. The forming system of a particleboard line usually comprises two wind formers located at its front and rear ends, as they form the top and the rear board surfaces. The ecoFormer SL by CMC Texpan has been developed from the traditional wind former technology. This was because we wanted to improve the separation of coarse and nes particles to create the optimal board surface. The air ow was simulated using the CFD method (Computational Fluid Dynamics) and optimised with respect to its aerodynamic behaviour thus improving its energy eciency. The ecoFormer SL can also be easily retrotted into existing mat formers, since its outer dimensions are compatible with the conventional wind formers oered by CMC. Features, function

Good mechanical properties of a particleboard require core layers made of homogeneously distributed, consistent-quality particles. The mechanical forming heads by CMC Texpan are ideal because they always guarantee consistent particle distribution at the right time. They are called Cageformer heads. Features, function Upstream disc screen for discharging oversize or glue clots Metering bins with adjustable rakebacks Bin bottom belt with speed control belt scale Mechanical Cageformer head incl. 4-6 proled distributing rollers distributing plates 4 cage rollers Advantages No separation eect on the core-layer material Improved distribution in transversal direction Easy cleaning Variants, options Format adjustment forming chamber side wall adjustment recycling of the excess particles Inline correction of transversal distribution

Excellent board qualities are only achieved when the endless particle mat is degassed and compacted before being transferred to the ContiRoll®. This is realised by the Siempelkamp prepress for particleboard production. Features, function An air evacuation zone, the angles and levels of which are adjustable. High-pressure zone incl. hydraulic position control Two circulating belts Belt cleaning systems incl. extraction system installed along all the belts Advantages Eective prevention of soiling or material jams No belt indents in the board surfaces Variants, options Endless air evacuation belt

Following product changes or a surface defect detected by the monitoring equipment, the aected mat section has to be rejected and discharged in time before reaching the ContiRoll®-infeed. This is ensured by Siempelkamp’s reject mat system. It is an in-line element of the forming line. Thanks to its modular design, it can be adjusted to the product parameters, enabling reliable press protection and a quick and material ecient plant restart. Features Drive/reject mat unit including track support Reject mat hopper Integration in the belt drive station Motor-adjustable table including belt deection nose Motor-adjustable belt cleaning brush Advantages Distance-controlled activation for an optimised material discharge and minimised rejects volume Options Including disintegrating rollers Including dust ap Hydraulic reject mat drive Nose stroke 3000 mm or 4000 mm

It is of vital importance that the oriented mat be conveyed precisely from the forming line into the infeed head of the ContiRoll®. Otherwise a dependable production process and a symmetrical heating of both surfaces could not be guaranteed. We therefore use an intermediate belt, which is perfectly tuned to the exible infeed head of Siempelkamp’s ContiRoll® and which adjusts automatically to the respective recipe and process Parameters. Features Basic frame including belt drive Belt tracking unit Tensioning device Motorised slide table, swivelling and moving in production direction Pulley unit Advantages Preassembled unit, modular design integrated in the forming line Positioning of the slide table in the press infeed in dependence on the recipe Options Belt cleaning brush Seamless, endless belt

Various heater types available, eciency and robustness characterise directly heated drum dryers by Büttner. They are used for drying wood particles, strands, sugar beet pulp and all free-owing types of wood, biomasses and bulk solids Features Water evaporation capacity of up to 80 t/h depending on the product Direct heating system with multi-fuel burners in combustion chambers Direct heating system using ue gases from energy plants Direct heating system using waste gases from turbines or engines All combinations of these types of heaters are possible. A ash tube may be used for pre-drying and oversize separation of material that is quite moist. Material separation via cyclones or drop boxes Function The material to be dried is admitted through an air-tight rotary air lock into a rotating single-pass drum dryer. The dryer drum can be tted with specic internal ights to suit the material to be dried. This results in an increase in surface area and thus an increase in eciency

The forming line consists of machines for orienting and forming a multi-layer strand mat for OSB production. The forming line consists of two mat formers including disc orienter heads to create the surface layer and one or two mat formers including pocket orienter heads to create the core layer. The threelayer strand mat thus produced enables high orienting degrees and is a prerequisite for meeting the relevant OSB-standard requirements. Additional devices for quality monitoring complete the function of Siempelkamp’s forming line. The plant modules can be adjusted to the respective requirements thus preparing the mat optimally for its compaction in a ContiRoll®. The equipment is designed to produce board thicknesses between 6 and 38 mm without any problem. The forming belt conveyor is a modular design as well tuned to plant output and feasible board formats.

The surface-layer mat former (disc orienter) deals with the material ow from the metering bin infeed, the bin discharge front up to the orienter underneath. We usually employ a disc orienter to create surface layers as it enables high orienting degrees. These, in turn, are important to meet the relevant standard requirements for MOR and MOE in the boards’ main axes. Features Position-controlled, swivelling twin screw conveyor Bin metering belt, incl. weight-per-unit-area control Discharge front rollers, extremely wear-resistant DiscFormer incl. disc rollers Level and angle adjustment of the orienter head Advantages Most homogeneous density distribution inside the bin Orienter head adjustment enabling low dropping levels and perfect orienting of the strands in production direction Positioning of extremely large strands on the outer faces Careful strand treatment Simple, self-cleaning system

The core-layer mat former (pocket orienter) deals with the material ow from the metering bin infeed, the bin discharge front up to the orienter underneath. We use the FinFormer, which orients the strands crosswise to production direction. Distribution rollers form parts of the FinFormer, orienting the core-layer strands homogeneously in longitudinal and crosswise directions onto the forming belt underneath. The FinFormer is suitable for all strand geometries. Depending on the requirements one or two mat formers are used. Features Position-controlled, swivelling twin screw conveyor Bin metering belt, incl. weight-per-unit-area control Discharge front rollers, extremely wear-resistant FinFormer including distributing rollers and pocket orienter rollers underneath Level and angle adjustment of the orienter head Advantages Most homogeneous density distribution inside the bin crosswise to production direction Careful strand treatment