The A. H. Meyer Erosion Control Blanket Production Line (8 ft to 16 ft wide) has many new and improved features and is used for the production of Erosion Control Blankets, Mulch Blankets, Roof-Greening Blankets, Folimatt Blankets and other blankets for special applications made from natural fibres like coir fibre, straw, rice straw, excelsior, jute, hemp, etc.
The production lines are custom-built according to individual requirements and vary in size and layout and added accessories.

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• Bale breaker / Bale opener for normal compressed fibre
• Bale breaker / Bale opener for highly compressed fibre
• Bale Pre-Processing
• Blending Unit for the blending of two fibres
• Vertically arranged Fleece Laying Units
• Roll-off Devices for various fleeces, nettings and fabrics
• Stitching Unit with a linear stitching system
• Cross Cutting Unit
• Automatic Roll-up Unit Belt Type with Stretch-Wrap Device
• Standard Roll-up Unit
• Standard Electric Control System with Programmable Logic Control (PLC)
• Electric PLC Control System with BUS System and Process Visualization

The Bale Opener opens square or round bales of normal compressed fibres like straw, rice straw, flax, hemp etc.The bales are placed onto the conveyor belt with a fork lift.
From here the bales are transported to the opening unit that consists of two special tambours.
The fibre is then transported on to a short conveyor belt with an equalizing roller to achieve an even material flow onto the following lateral conveyor belt that feeds the straw into the transport blower.

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The Bale Opener opens bales of highly compressed fibres such as coir- and PP-fibre, etc.
It follows the Bale Pre- Processing Unit or the bales may be broken up manually and fed into the Bale Opener.
On a conveyor belt the loosened fibre is transported to the fine fibre processing stage where an arrangement of three tambours with stripping elements thoroughly loosen up the fibre.
From there a spreading tambour feeds the fibre evenly into the basin of the transport blower.

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The Bale Pre- Processing Unit handles the coarse processing of highly compressed bales. To save man-power the Bale Pre- Processing Unit offers the possibility to place up to 6 bales on an conveyor belt at a time they will be automatically forwarded and don't need any more attention.
To reduce the dust level and enhance better processing, the bales may be sprinkled with water through the spraying system above the conveyor belt before processing.
They are then transported to the coarse fibre processing stage which is equipped with a special tambour and different stripping elements to break up the bales.

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To produce blankets with mixed fibres a Blending Unit is required.
It consists of two vertically arranged box feeders that are placed above a special blending tambour. Light beams control the filling height.
The proportions of straw and coir fibre of the fibre blend is infinitely adjustable to the individual requirements.
This is set by determining the revolutions of the drawing roller.

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The Fleece Laying Unit consists of a vertically arranged box feeder into which the fibre or fibre blend is fed to be evenly distributed by a distribution flap.
A tapered transport and pressure roller system transports the compressed fibre to the tambour. The tambour loosens the fibre once again and a layer of fibre is placed onto a synthetic or organic netting on the conveyor belt.
The drawing velocity is infinitely adjustable. The higher the drawing velocity in relation to the transport speed the thicker the fleece. The width of the fleece is easily adjusted by an electric motor-driven device on the box feeder.

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The synthetic or organic netting which is the carrier of the fleece or added to the top of the fleece is rolled up from a Roll-off Device (Bottom) under the table and Roll-off Device (Top) above the table.
It is recommended to have at least two Roll Off Devices (Bottom) and two Roll Off Devices (Top) for different types of nettings.
The rolls are held by cones and the device is equipped with a brake to control the rolling off.

Roll-Off Device (Top)

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Roll-Off Device (Bottom)

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After passing a pressure roller the fleece is transported to the Stitching Unit that produces chain stitches. By removing needles from the respective positions in the needle bar the distance between the needles may be adjusted in intervals as the needles are installed according to the material to be stitched.
The single stitching threads are taken from the bobbins and are fed via a thread tension device to the stitching process. The single thread bobbins are arranged on top of each other and side by side on a yarn table.
The upper stitching table can be equipped with a motor driven adjustment device for the selection of the height in accordance with the required blanket thickness.

The Stitching Unit is also equipped with an infinitely variable stitching length adjustment device.The stitching speed depends on the stitching length and the speed of the driving unit. The use of a frequency converter allows infinite adjustment of the stitching speed. The layers to be stitched are forwarded via a pair of rollers. An almost synchronized movement of the stitching needle to the blanket results in continuous transport of the layers during the stitching process.

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The Cross Cutting Unit cuts the blankets to a pre-selected length while the holding device holds the blanket in place.

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The produced blankets are fed into the fully Automatic Roll-up Unit via a draw-in conveyor which then rolls up the blankets to the pre-selected length. The winding procedure does not require a winding core. The winding speed is controlled in accordance with the stitching velocity.
If an optional Length Compensation Device is installed in front of the Cross Cutting Unit, production will continue during the stretch-wrapping and ejection process.
The automatic Roll-Up Unit rolls the blankets in such a way that the underneath of the blanket during production will be on the top after rolling out the blanket at the site.
The Automatic Roll-Up Unit is a supplementary unit and can be added to almost any existing production line for erosion control blankets. In this case the unit will have a separate electric control and, therefore, no expensive modifications at the existing controls are required. This Unit is connected to the existing controls via entries and exits of the existing roll-off device.

Option: Stretch-Wrap Device
The Stretch-Wrap Device is an option to the Automatic Roll-Up Unit and envelopes the rolled up blankets with stretch film once they are rolled up and before they are ejected.

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The Standard Roll-Up Unit rolls up the blanket to the pre-selected length. The rolling-up speed is controlled according to the stitching velocity and the winding diameter. Full rolls may be stretch-wrapped manually .

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A Programmable Logic Control System (PLC) controls the machine. All operational data, operating parameters as well as machinery conditions are shown on a display. Due to the combination of PLC and frequency converter it is possible to store for the important individual drive elements one or more start phases or operating performances/characteristics and, therefore, to adapt the total system to the required product.
The machine may be operated manually or automatically. The control is equipped with a length meter for the blanket lengths. This length meter provides all information such as blanket lengths, operational data, e.g. quantity of the produced blanket rolls.

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A stored program control (PLC) controls the machine. All frequency controlled motors in the system are interconnected via a BUS System. All operational data, operating parameters as well as machine conditions are shown on a computer monitor.
Due to the combination of PLC and frequency converter it is possible to store for each individual drive element one or more start phases or operating performances/characteristics and, therefore, to perfectly adapt the total system to the required product.
The machine is shown graphically on the monitor with "process visualization". Each drive may be called up on a mouse click and can be processed manually by the operator for automatic operation. Product recipes can be stored and when they are called up all parameters are automatically adjusted.

Furthermore it is possible to store and adapt the acceleration and deceleration time according to the recipes of the different products to assure constant quality of the blankets during starting and stopping phases of the line.And optional with a Tele-Service System of the PLC makes it possible to enter into the program online from long distances.

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We also supply products like pp netting, jute netting, coir fibre bales etc. for the production with our machines.

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