Blade Strips & Saw Bands Razor blades for a gentle cut with ONEJOON furnace plants

Continuous coating of blades with PTFE

You want to coat razor blades, scalpel blades, microtome blades or other blades with PTFE (Polytetrafluoroethylene / Teflon®)?

We supply turnkey furnace plants for the continuous coating of blades with PTFE.

With our experience from more than 120 years of industrial furnace construction and plants realised worldwide, we are the market leader for furnace plants used in continuous blade coating.

The continuous process behind the soft coating of blades with PTFE

Razor blades and other blades are often coated with PTFE (Teflon®) for a smoother cut.

In our furnace plants, blades are coated with PTFE in the following steps:

provisioning of the blades on customer-specific magazines (also called "bayonets" or "swords")
preheating of the blades, thereby ensuring the evaporation of the solvent during coating
alternatively, the blades can be cold coated and then dried
coating the blade edges with water-based PTFE; it is important that all blade edges are evenly coated
heat treatment (also called "sintering") under protective gas; it is important that all cutting edges are heated evenly
cooling under protective gas, removal of the magazines

Plant engineering

Furnace plants for the continuous coating of blades with PTFE

The furnace plant was developed for the continuous coating of blades with PTFE.
It impresses with its modular design and simple system technology.

Each individual blade magazine passes through the system under identical process conditions.
A fully automatic operation is possible through the integration of loading and unloading equipment on request.

We would be delighted to adapt the system to your wishes!

Stock for continuous operation
Area for manual or fully automatic loading of the system with magazines
- for 34 magazines (up to 200,000 blades depending on type)
- one complete load is sufficient for approx. 1 hour of system operation
Efficient Preheating
of magazines loaded with blades before coating
- infrared heating
- nominal temperature approx. 120 °C
- one heating zone each above and below
- alternatively, also suitable for drying the blades after coating
Fully automatic and accurate to repeat
for spraying the blade edges with water-based PTFE solution (with alcohol-based PTFE solution on request)
The coating unit includes:
- spray booth
- spray application and material supply
- magazine handling with linear drives
- exhaust air system
- control
Atmosphere under control
to separate the furnace atmosphere from the environment
- meandering protective gas flushing prevents oxygen from entering the process area
- patent-pending design
- inclusive exhaust hood
- oxygen sensor optional
Excellent insulation
for melting and sintering the PTFE particles on the blade edges
- rated temperature 450 °C
- heated electrically
- 3 heating zones
- protective gas atmosphere in the process area
Simple and effective
to cool down the blade magazines
- water as cooling medium
- 3 cooling zones
- protective gas atmosphere in the process area
- outlet sluice with exhaust hood
Stock for continuous operation
Area for manual or fully automatic unloading of the system
- for 34 magazines
- alarm function when the maximum level is reached
Customized magazine holder
for the continuous transport of the blade magazines through the furnace plant
- uniform heat treatment of all blades
- suitable for magazines with a stacking length of approx. 300 mm
Clearly arranged instruments
Station for manual supply of the furnace system with required media
- cooling water
- protective gas
Total control
Station for the operation and control of the furnace system
- Siemens touch panel
- storage of measurements, set points and error prompts
- different password-protected user levels
- monitoring of plant safety
- remote control

Technical main data

Plant dimensions	approx. 15,5 x 2,6 x 2,7 m (L x W x H)
System weight	approx. 5 t
Effective magazine length	approx. 300 mm
Throughput	approx. 34 magazines/h (corresponds to approx. 100,000 DEB blades/h)
Total load	max. 192 magazines

Our services

Same blade – different furnace system

Just because every customer has special requirements

Together with you, we will work out the optimal solution for your request:

definition of the scope of supply
design of the plant based on your specifications
configuration of the plant from standardised components, customer-specific adaptations
presentation of the plant concept
preparation of the offer
design, production and testing of the plant in our factory
worldwide shipping
assembly, commissioning and acceptance of the plant at your location around the globe
preparation of the plant documentation and the EU declaration of conformity
production support
services: plant maintenance, spare parts, repairs, measurements
network to adjacent processes

We are looking forward to your request, contact us today!

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References

Selected references

Satisfied customers - the best proof of successful cooperation

Furnace plants for the soft coating of razor blades Dates & Facts

customer: European manufacturer of blades
product: razor blades
system: furnace plant for the continuous coating of razor blades with PTFE
year of manufacture: 2017
special features: turnkey plant
scope of delivery: plant design, engineering, construction of the furnace plant, shipping, assembly at the customer's site, commissioning, operator training, after-sales

Your ONEJOON expert

My name is Martin Wiese, your expert for the hardening and tempering of thin strip material and soft coating of blade edges here at ONEJOON. If you have any questions or need further information, please do not hesitate to get in touch.

I'm looking forward to your message!

Contact your ONEJOON expert