HELLWEG MASCHINENBAU GMBH & CO. KG

Film and Foil Cutters

Hellweg Maschinenbau specializes in the development and the production of recycling machines for the plastics-processing industry. The company was founded in 1998 by Bernd Hellweg and uses the name Hellweg Maschinenbau GmbH & Co. KG and is managed by the Hellweg family.

After developing and realizing complete projects for well-known machine-building companies, Mr. Hellweg decided to attend to his own products more intensely. The high-quality products made by wage labour became the introduction and motivation of machine building.

Besides a wide assortment of different cutting mills the Hellweg Maschinenbau GmbH & Co. KG also develops solutions, which comply with the individual requests of the user. The standardized assortment of machines contains movable mills for incline, slow-cutter and central mills in different sizes, as well as complete fully automatic recycling systems.

Film Cutters

Hellweg cutting units are equipped with a guide roller and are designed for the use of standard blades. Unproblematic film flow is guaranteed by 5 air nozzles and the air is supplied via a 1/8`` connection. These cutting units are perfectly apt for cutting HD and PE film and they can also be delivered without air nozzles and an air connection.

Single Blade Appliance (Form A) - Side Cutting Device

The Single Blade Appliance (Form A) is used for slitting a blown film tubing on both sides.

Features:

 - Ball-bearing driven high-grade steel guide roller
 - Magnetic blade support
 - Quickly changeable standard razor blade, double support from magnet and guide zone
 - Air supply with 1/8`` connection
 - Five air nozzles for putting the film in position
 - Six air nozzles for cooling the inside
 - Assembly bore holes
 - Film guide zone ensures the film moves smoothly
 - Hoop guard

Dimensions: 210 x 130 x 12 mm

Triple Blade Appliance (Form B) - Triple Guide Roller

The Triple Blade Appliance (Form B) is used for slitting a blown film tubing on both sides.

Features:

 - Ball-bearing driven high-grade steel guide roller
 - Magnetic blade support (1x)
 - Quickly changeable standard razor blade, double support from magnet and guide zone
 - Celle blade back (mass mm: 57 x 18.5 x 0, 4)
 - Celle blade top (mass mm: 57 x 18.5 x 0, 4)
 - Assembly bore holes
 - Film guide zone ensures the film moves smoothly

Dimensions: 300 x 115 x 12 mm

Double Blade Appliance (Form C)

The Double Blade Appliance (Form C) is used for slitting a blown film tubing on both sides.

Features:

 - Ball-bearing driven high-grade steel guide roller
 - Magnetic blade support (1x)
 - Quickly changeable standard razor blade, double support from magnet and guide zone
 - Celle-blade back (mm: 57 x 18.5 x 0.4)
 - Celle blade top (mm: 57 x 18.5 x 0.4)
 - Assembly bore holes
 - Film guide zone ensures the film moves smoothly

Dimensions: ca. 450 x 115 x 12 mm

Double Blade Appliance (Form D)

Features:

- Changing cartridge (2x)
- Celle-blade top (mm: 57 x 18.5 x 0.4)
 - Celle-blade bottom (mm: 57 x 18.5 x 0.4)
 - Holes to adjust the unit on the shaft

Dimensions: 110 x 50 x 330 mm

Double Blade Appliance (Form F)

Features:

 - Adjustable unit in combination with the film cutter
 - Changing cartridge (2x)
 - Film cutter
 - Celle-blade top (mm: 57 x 18.5 x 0.4)
 - Celle-blade bottom (mm: 57 x 18.5 x 0.4)

Complete Solution:

-Runner with wide brackets
-Two trolley units
-Two film cutters type F

Dimensions: ca. 190 x 70 x 20 mm

PERIPHERAL EQUIPMENT: 

RC 180 - For Pre-Cutting of Foil Stripes

The Pre-Cut-System RC 180 is specially made for the pre cutting of thin foil / film. The system works with a two-knife rotor with an adjustable blade clearance of only 0,05 mm, so the RC 180 is ideal for reducing the capacity of foils / film directly at the working place. Like all products of Hellweg Maschinenbau the RC 180 is made for 24 hour operation.

The RC 180 can feed-in foil stripes up to 50 mm width with a rotor revolution of 700 /min. and a motor output of 0.55 kW.

The Special cutter (RC 180) is directly mounted at the end of a pipe for easy transport of foils in pipes (for vacuum suction).

Dimensions: ca. 280 x 665 x 255 (W x L x H)

Edge Cutting Systems

The HELLWEG edge cutting systems are designed for long-term use. The edge strips which arise during trimming are directly crushed at first and are then fed into the cutting mill for further processing. Special guides and a hardened knife supporting plate ensure high durability. The edge cutting system can be in one of two versions - for one edge strip or two. The two-sided version comes with an adjusting device for determining the width of the edges. Hellweg edge cutting systems can be directly integrated in the recycling process.

Technical data:

 - Geared motor: 2.2 kW
 - Supply voltage: 400 V - 50 Hz
 - Cut area: max. 2500 mm²
 - Cut thickness: 18 mm
 - Cut width: 200 mm
 - Length of cut with a rate of feed of: 0.5 - 5m/s: ca. 20 - 170 mm

Adjusting Device for Edge Cutting Systems

The adjusting device can be used to bring the edge strips of various plate widths directly to the edge cutting system.

Features:

 - Trapezoidal threaded spindle
 - Virtually maintenance-free
 - Stable, robust design

Drawing-In Device for Film / Foils (With Adjustable Feeding Speed)

Type: MG240/180, with double drawing-in device and extraction equipment.

This drawing-in device can draw in two edge strips at different speeds. This is made possible by the use of two frequency converters which can both be infinitely set (shown left under). The foil granulate is suctioned off directly.

Suction Plants / Devices

With the aid of Hellweg suction devices you are in a position to completely separate dust from the granulate.

Sprue Grinders and Granulators

Series 80 / MRS (Material Recycling System)

MRS - (CD/DVD-Sprue Grinder)

The production of pre - recorded/recordable/rewritable optical media (CD, DVD & smart cards) generates tons of so-called ``sprues`` annually. The usual way to dispose of this production wastes is collection, storage and finally dispatching to a raw material supplier.

This Material Recycling System (MRS) recycles these sprues in a closed loop process: The MSR unit collects sprues directly from the moulding machine, grinds them and re-injects them with the ``virgin`` polycarbonate (PC).

The closed loop system prevents impurities from mixing with the recycled polycarbonate and therefore maintains the PC`s quality.

Series 80: High Quality In-House Grinder

This extremely small and efficient In-House Grinder has as a variety of uses for example; it can directly be fitted in the bed of an injection-moulding machine. If for industrial use or in a lab, this series has been constructed for continuous operation. Because of the expansive list of options this mill is available for a wide field of applications.

Advantages:

 - Quick screen and knife change
 - No need to adjust the rotor knife
 - Knives can be reground several times
 - Quick and easy to clean
 - Maintenance-free
 - Ideal granulate quality
 - Outer bearing assembly fitted as standard, ensuring protection from dust
 - Opening without tool

Series 100 – Beside The Machine Granulators 

Highest ground material quality through fast material delivery.

The Hellweg 100 series beside-the-machine granulators, represents an economical solution for use alongside injection moulding machines with a medium amount of sprues to be processed. The space needed is extremely low due to the compact design.

These granulators guarantee optimum material handling and fast material delivery due to the design of the grinding chamber. In addition, the use of co-rotating rotor discs prevents ground material from becoming trapped between the rotor and the wall of the enclosure. Thermal degradation of the ground material produced is consequently largely prevented.

 - Working width - 100 mm
 - Rotor diameter - 100 mm
 - Motor output - 0, 75 - 1, 1 kW
 - Number of rotor knives - 3
 - Number of stator knives - 2
 - Nominal weight - 37 kg
 - Grinding output - 3-12 kg/h
 - Dimensions: 67 x 22 x 23 cm (H x B x L)

Benefits:

 - New innovative access for cleaning
 - Easy handling
 - New chamber design
 - Quick screen and knife change
 - No need to adjust the rotor knife
 - Knives can be reground several times
 - Solid rotor with high moment of inertia
 - CE certified
 - Opening of the machine without tool

Series 150 - Slow-Speed Granulators

A very compact mill for incline, which works immediately at the production plant and the applicability of this all-round mill for incline are nearly infinite.

Suitable for all plastics, for GFK-plastics as well, but for this the mill has to be offered in wear-resistant quality.

Standard sieves are offered with a size of 5-8 mm and guarantee invariable size of particles and exclude long points of sprues.

Advantages:

 - Quick screen and knife change
 - No need to adjust the rotor knife
 - Knives can be reground several times
 - Energy-saving and performance-enhancing diagonal cut
 - Solid rotor with high moment of inertia
 - Outer bearing assembly fitted as standard, ensuring protection from dust
 - CE certified
 - Opening of the machine without tool

Series 200 - Slow-Speed Granulator

A very compact mill for incline, which works immediately at the production plant. The applicability of this all-round grinder for incline is nearly infinite.

This grinder is also ideal for PET. The cutting chamber will be fastened with an angle directed by Hellweg (to force through hollow bodies), the mill can also be used for plates, sprues and foils.

Standard sieves are offered with a size of 5-8 mm, and guarantee invariable size of particles and exclude long points of sprues.

Advantages:

 - New innovative access for cleaning
 - Easy handling
 - Solid screwed/plugged chamber
 - Quick screen and knife change
 - No need to adjust the rotor knife
 - Knives can be reground several times
 - Solid rotor with high moment of inertia
 - CE certified
 - Opening of the machine without tool

Series 250 - Slotter

The cutting mill with advanced shredder and toothed roll.

This series can be used, only if least possible parts of dust may remain. We emphasize: ``least possible parts of dust``, because often there is talk about no dust in the granulated material.

The ``slotter`` is very easy to handle for example the divided cutting chamber, as a result of the two opening possibilities the mill is very easy to access and clean. This series guarantees best quality of granulated material as well. But attention must be paid to the slower grinding operation. Also attention must be paid to the fact that the slotter can`t cut soft plastics (PP, PE) and can only condition cut hollow bodies.

Advantages:

 - Slow runner (25 R.P.M.)
 - Zyclon / fan connector
 - Easily adjustable counter-knives
 - Power-economizing offset arrangement of the rolls
 - High-torque geared motor
 - Reduction without a screen
 - Compact, space-saving construction
 - External double-sided bearing, dust resistant
 - Double-sided external bearing for dust protection
 - Long-life knives and rotor
 - Maintenance-free
 - Virtually maintenance free
 - Low operating noise (approx. 72-78 dBA)

Central Granulators

Series 180 - High Quality Granulators

The Series 180 - High Quality Granulators are perfectly apt for all-round central mill sprues and mould parts as well as thick walled small parts. This series is a result of its solid construction and guarantees a long service life. Equipped with a feeding-rolls-device this series can be used for the grinding of foil edge stripes.

Standard sieves are offered with a size of 5-8 mm.

Advantages:

 - Quick screen and knife change
 - No need to adjust the rotor knife
 - Knives can be reground several times
 - Energy-saving and performance-enhancing diagonal cut
 - Solid rotor with high moment of inertia
 - Outer bearing assembly fitted as standard, ensuring protection from dust
 - Maintenance-free

Series 260 - High End Granulator for PET-Recycling

The Series 260 - High End Granulator is ideal for PET-Recycling. The cutting chamber will be fastened with an angle directed by Hellweg (to force through hollow bodies). Sprues, plates, form parts and above all hollow parts (bottles, cans up to 5 l) can be ground without any problems. Because of the compact construction (fan fixed in the back area of the support) less space is necessary. The mills of the series 260 are basically double beared. The number consists of the working width and the rotor diameter. The series 260 is an all round mill, suitable for all plastics.

Standard sieves are offered with a size of 6-10 mm and guarantee invariable size of particles and exclude long points of sprues.

Advantages:

 - Sound-absorbing section cabin and hopper
 - Integrated suction unit
 - Fan connector
 - Low feeding height
 - Quick screen and knife change
 - No need to adjust the rotor knife
 - Knives can be reground several times
 - Energy-saving and performance-enhancing diagonal cut
 - Solid rotor with high moment of inertia
 - Outer bearing assembly fitted as standard, ensuring protection from dust
 - Hydraulic opening device

Series 600 Mega-Series Central-Granulators

The Hellweg 600 series granulators enable gentle and thorough granulation of thick-walled mouldings, sheets, sprue cakes, pipes and profiles, etc, on account of its high stability the entire machine housing and through the high moment of gyration of the massive rotor that is made from one solid piece of metal. Voluminous and large surface area plastic parts such as bumpers from the automotive industry or parts dismounted from old cars, plastic tanks, door interior claddings, etc can also be granulated.

A special rotor enables single stage granulation of even extremely massive lumps from production start-ups. The machines may be supplied optionally with soundproofed cabins and a noise absorbing feeding chute.

 - Working width - 1000 mm  
 - Rotor diameter - 600 mm
 - Motor output 45 - 75 kW
 - Number of rotor blades - 3 -7 
 - Number of stator blades - 2
 - Net weight - appr 4500 kg
 - Grinding output - approximately 750 - 2500 kg/h

Benefits:

 - Quick screen and knife change
 - No need to adjust the rotor knife
 - Knives can be reground several times
 - Energy-saving and performance-enhancing diagonal cut
 - Solid rotor with high moment of inertia
 - Outer bearing assembly fitted as standard,
 - Protection from dust
 - Hydraulic opening device

Series 300: High Performance Granulators

The Series 300 is perfectly suited for thick walled form parts, plates and sprue flats. Because of its extreme stability it operates in a reliable and safe fashion. The solid rotor with helical cut has a very high flywheel-effect. The standard external bearing (double) protects the bearings from dust.

Advantages:

 - Quick screen and knife change
 - No need to adjust the rotor knife
 - Knives can be reground several times
 - Energy-saving and performance-enhancing diagonal cut
 - Solid rotor with high moment of inertia
 - Outer bearing assembly fitted as standard, ensuring protection from dust
 - Hydraulic opening device

High Capacity Cutting Mill / Grinder with High Input Hopper Conveying System

 - Type: MK 450/300
 - Version: Recycling plant with a high capacity hopper, conveying system and dosing apparatus/system.