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Chemical Processing

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Cooling conveyor belt

Customized Conveyor Solutions

From the steel belt to the steel belt system, Berndorf Belt Technology USA has high-performance solutions for today’s chemical processing applications.

As the leading supplier of cooling conveyor belts, drying conveyor belts, powder paint and coating conveyor systems, and other stainless steel applications for chemical processing, we focus on delivering high quality, customized solutions. Berndorf belts are known for high dynamic strength, flatness, and precise tracking. And, with their high corrosion resistance, Berndorf belts are the ideal choice for demanding, continuous chemical processes.

Feeding and discharge devices, including the AccuDrop® and Rolldrop® pastillators (see below), complement our steel belts and steel belt systems, making Berndorf your complete chemical belt solutions provider.

Contact Berndorf To Get Your Next Project Started

Contact Berndorf today to get started on customized steel belt systems for your chemical processing applications.

Benefits of Berndorf Chemical Conveyor Systems

Belts are produced in “endless” condition between two drums. This ensures belt straightness, flatness, and precise tracking, while minimizing downtime and extending belt life.

Belts provide a flat and uniformly thick surface area to ensure consistently high product quality.

Manufacturer of steel belt systems for continuous industrial processes.

Installation and maintenance are available from certified Berndorf Service Technicians to guarantee top quality workmanship with less downtime and increased profitability.

Applications Key products Process Belt Material Belt Characteristics
Chemical raw materials Resins
Powder paint
Hot melt adhesives
NICRO 12.1
Smooth surface
Perfect adhesion of vee-ropes
Corrosion resistance
Fibre-reinforced polymers GMT
Ski coating
Container panels
NICRO 12.1
NICRO 52.6
NICRO 62.5
Surface quality
Uniform Thickness
Thermal conductivity

Special Features of Berndorf Chemical Processing Conveyor Belt Systems

Feeding Device: AccuDrop® Pastillator

Developed by our partner Steel Belt Systems, the AccuDrop pastillator feeding devices on our chemical processing conveyors are built for simple, worry-free operation. Liquid product is fed inside a static heated body and automatically distributed through a rotating, multi-perforated shell. As it passes through the perforated shell, the liquid product forms into small, consistent drops which are deposited onto the cooled steel belt via centrifugal and gravitational forces. The drops of liquid then solidify into pastilles form.

  • No need for “re-feeding” to clean the shell
  • Thicker pastilles for high production rates
  • Minimizes product buildup on the shell for cleaner operation
  • Provides versatility for use with all types of medium- and low-viscosity products
  • Rotational speed is synchronized with the speed of the cooling belt to ensure consistent and well-formed pastilles

Feeding Device: RollDrop® Pastillator

The RollDrop pastillator feeding device feeds liquid product at a controlled temperature onto a roller rotor, the rim of which features specially designed “teeth”. The liquid product flows consistently through spaces in the teeth pattern; the resulting drops gather on the back of each tooth. Centrifugal force and gravity cause the drops to fall onto the cooled steel belt, where they instantly solidify into pastilles.

  • Suitable for steel belt systems up to 78-3/4” (2,000mm) wide
  • Open construction for easy cleaning and maintenance
  • Minimal product retention time on heated area avoids product degradation
  • Versatile enough to accommodate any medium- or low-viscosity liquid product
  • Tooth dimensions regulate pastille size
  • Rotational speed of RollDrop pastillator is synchronized with the speed of the cooling belt to ensure consistent and well-formed pastilles 

Feeding Device: Weir Feeder

The Weir feeder device is designed for feeding a continuous layer of any liquid product that is not affected by the contact with air. We offer Weir feeders in sizes to accommodate all belt widths, and can be retrofit to older systems.

Weir Feeder Device

Feeding Device: Ribbon Former

The ribbon former feeding device on Berndorf chemical processing belt systems is comprised of a jacketed horizontal pipe with a bottom gate that opens by means of an adjustable blade. Molten products are fed into the ribbon former from the top, where an internal chamber ensures even distribution of the product across the entire width of the feeder. As the chamber fills, the blade releases continuous layers of product onto the belt.

  • Opening is fully adjustable via hand wheel; automatic systems available upon request
  • External sides are removable for easy cleaning
  • Suitable for medium-viscosity products that are sensitive to air
  • Available for all belts of all widths
  • Can be retrofit to existing conveyor systems

Ribbon Former Nuovo

Feeding Device: Casting Device

This casting device is suitable for feeding colloidal blends with medium-high viscosity. Feeder blade height is adjustable by means of four hand wheels; these hand wheels also allow users to adjust the alignment of the blade’s plane in relation to the belt’s plane.

Casting Device for Colloidal Blends

Feeding Device: Strip Formers

Strip formers are suitable for use with a wide range of products. Material flow is distributed through an internal chamber; adjustable pins regulate product output from holes in the die. Chamber is easy to clean, inspect, and maintain thanks to two flanged openings on the outer walls of the chamber.

Strip Formers For Use with a Wide Range of Products

Single Belt Cooling Conveyors 

Berndorf’s stainless steel belt cooling conveyors are the ideal solution for solidifying products from their liquid or molten state. We offer a variety of customizable and specialty cooling conveyor system options.

Cooling conveyor/flakers are available for the production of flakes. The feeding system (see above) is selected in respect to the product being processed in order to maintain uniform product distribution across the full width of the conveyor belt. Downstream, a rotating breaker (see below) breaks product slabs into flakes. Cooling conveyor/flakers are used to process sodium acetate, chromic acid, bitumen, industrial waxes, ammonium nitrate, paraffin, phenolic resins, aluminum sulfate, and many other chemicals and compounds.

Cooling conveyor/pastillators are used to produce pastilles from product in a liquid or molten state. The pastillator or feeding device (see above) provides a consistent layer of individual liquid drops, which solidify into pastilles upon contact with the cooling conveyor belt. Downstream, pastilles are detached from the belt by a special scraping blade. Cooling conveyor/pastillators are commonly used to process ammines, chromic acid, sodium hydroxide, hot melts, naphthalene, industrial waxes, paraffin, alkyd, colophony, epoxy, phenolic, and other resins, and many other chemicals and compounds.

Have More Questions about Single Belt Cooling Conveyors? Contact Berndorf Today

Contact us our friendly customer service staff is standing by to help discuss all your custom requirements.

Double Belt Cooling Conveyors 

Berndorf engineered our double belt conveyor systems to solve the thermal exchange problems that products with low thermal conductivity or high thickness can cause. These systems are also ideal for applications where very long single belt cooling conveyors would normally be used.

Double belt cooling conveyors are most commonly utilized in applications where:

  • the product tends to rise during the cooling process and thus lose contact with the cooling surface
  • the product is a poor heat conductor and/or must be produced at high thickness
  • the available floor space is not long enough to accommodate a very long cooling conveyor

Essentially, Berndorf double belt cooling conveyor systems are comprised of two single belt cooling conveyors stacked on top of each other, with their active belt surfaces together. (The active belt surface of the top conveyor is the inferior, or lower, length of belt.)

Coolant is sprayed against the inner surface of the belt’s fronts, which are in contact with each other. The product is fed onto the bottom belt, and, after a prescribed length of time, meets the second cooling conveyor and is sandwiched between the two belts. In this way, the effectiveness of the thermal exchange is doubled and process time can be decreased significantly. 

Double belt cooling conveyors are used to process rubbers, various polymers, ABS, polyester resins, polycaprolactam, and many other chemicals and compounds.

Discharge Device: Standard Breaker

Breaking units are critical components when processing product that needs to be flaked. Berndorf, in partnership with Steel Belt Systems, has developed two types of breaker.

Our “standard” breaker is ideal for macro-flakes around 20mm x 20mm with a maximum thickness of roughly 10mm. This system features specially engineered breaking rotors, combs with teeth in an ideal geometric layout and size, and calibrated rotating speeds, all designed to deliver consistent and even flakes.

A pre-breaking device prevents clogging inside the breaking chamber. The chamber itself is fully accessible through a single door, which is secured with a safety microswitch. When the microswitch is tripped, all rotating parts immediately stop to ensure operator safety. 

Two material options are available to meet your specific application and performance requirements.

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Contact us and we'll help you figure out the right system for your company's needs.

Chemical & Rubber Discharge Devices

Standard Breaker 

Dimensions ( Average of a sample of Flaked Product

MM  %  Mm  %
>16  1  4-2.8  1.46
16-14  3.2  2.8-2  1.24
14-13.2  4.05  2-1  1
13.2-12.5  22.05  1-0.5  1.2
12.5-11.2  25  <0.5  14.5
11.2-10  14.13    
10-8  4.87    
8-5  3.35    
5-4  2.95    

Discharge Device: Minibreak Breaker

For micro-flakes of approximately 10mm with a maximum thickness of roughly 5mm, Berndorf and SBS offer the “Minibreak” breaking unit. Calibrated to create consistent micro-flakes with minimal dust, the Minibreak utilizes smaller, precision-machined teeth on the rotor and fixed combs to hold strict size tolerances. The Minibreak is designed to perform at high speeds to meet your production timelines.

A pre-breaking unit prevents clogs inside the breaking chamber. All stainless steel construction inside the chamber provides durability for a long working life. The chamber itself is accessible through a single door, which is secured with a safety microswitch. When the microswitch opens, moving parts inside the chamber stop immediately for operator safety.

Multiple material options for rotors and combs are available to meet your application and performance requirements

Minibreak Breaker

Example of Lakes Dimensions (Average)

mm %
>10 0
10-8  0.27
8-5 10.62
5-4 22.44
4-2.8 29.55
2.8-2 17.12
2-1 0.8
1-0.5 5.4
<0.5 13.8

Contact Berndorf About Our Special Discharge Devices

Berndorf’s chemical processing conveyors are available with a variety of customizable discharge options to meet your unique needs. Specialized discharge devices are installed directly into the conveyor system. Contact us to discuss your custom requirements.

Features/Benefits of Berndorf Chemical Processing Belts

Produced in endless condition between two drums
This endless production method ensures belt straightness, flatness and precise tracking, resulting in less downtime and longer belt life
Flat and uniformly thick belt surface area
Ensures high product quality
Installation and maintenance provided by certified, Berndorf-employed Service Technicians
You receive high quality workmanship resulting in less downtime and increased profitability