Krämer FAQ

General questions

What type of waste and dust are extracted by Krämer systems?

Krämer systems transport and dispose of dust, strip-shaped, and chip-shaped waste.

In which production processes are Krämer systems used, and at what stages?

Krämer systems are used in processes where cutting, punching, milling, and planing occur, and where various types of waste arise during the process: from dust, edge strips, paper and film remnants, to die-cut grids and cardboard waste.

How does the extraction process work?

Dust or waste is extracted directly at the point of generation, i.e., right at the cutting, punching, or sawing machines, so that products are not further contaminated in the production process. From there, the extracted air is transported to separators that separate the waste from the air. The air is then cleaned in filtration systems so that it can be returned to the hall in an energy-efficient manner. The waste is further transported and then compressed in presses, or it is an intermediate product that is stored in silos before further processing. Thanks to automatic control and digital monitoring systems, handling the extraction systems is very user-friendly, efficient, low-maintenance, and even remotely operable.

What happens after the final assembly and commissioning of a plant?

The extraction system operates and keeps your production process clean and free from dust and waste that could damage the product or the production machines. We are still available should changes in your production process arise that require an adjustment of the plant.

How long does it take from the first conversation to the final acceptance of the plant?

That’s a difficult question and the quick answer is: it depends! It depends on whether it involves a tendering process, which naturally takes longer than a direct commission. And, of course, it depends on how complex the production process is and what characteristics the waste to be extracted has. It also depends on whether only parts of a plant or a completely new overall plant are needed. Normally, we come to you, look at the production and the material to be extracted, and discuss everything important with you. Then we will provide you with an offer within a week. After the order is placed, we create all necessary plant layouts, 3D schematics, and plan the assembly and installation. While the plant parts are being produced here, important preparations can already be made on-site by the customer, such as laying electrical connections, preparing floor plates, etc.

Does Krämer Lufttechnik also operate internationally?

Krämer Lufttechnik has built systems in more than 50 countries. All our components are manufactured in Germany but assembled worldwide and adapted to local conditions.

How does Krämer Lufttechnik cooperate with machinery suppliers for the printing industry, insulation production, packaging production?

We work closely with machinery suppliers in all industries because only in this way can we ensure that the overall process is smoothly planned and the plant parts are specifically designed. Our success depends on long-term and good relationships: not only with our customers but also with our partners and suppliers.

How digital is the extraction and disposal process of Krämer systems?

The actual extraction process is not digital because dust, edge trimmings, and other wastes must be physically transported, crushed, cleaned, and compressed. However, control of the system is firmly in digital hands: both monitoring sensors and other electronic system components are integrated into the digital control so that they can be operated on the monitors of the switch cabinets and now even on the monitors of a normal PC.

Can Krämer Lufttechnik, as a small to medium-sized enterprise, work with large companies and corporations as customers?

Krämer Lufttechnik has built a large number of complex systems for major production companies in the packaging and printing industry, the insulation and food production, as well as in the nonwoven fabric production and wood processing industries over the past two decades. We have grown with our tasks, especially in terms of the often very detailed documentation requirements of large international corporations.

How does Krämer conduct a needs analysis for a new extraction system?

For a needs analysis, the following key figures are crucial: waste volume/hour, type and size of waste, operating hours of the systems, and their utilization.

Are Krämer systems "one-size-fits-all"?

Absolutely not! Our systems are always custom-tailored to the specific needs of our customer’s production process. Only the design of the plant for the corresponding types of waste, volumes, and machine utilization enables efficient operation. For example, certain types of waste may require certain components to be made of stainless steel. Or the flow behavior of a particular substance requires different dimensions in the transport of the waste. Therefore, a “one-size-fits-all” is not realistic for us.

How energy-efficient are Krämer systems?

In designing Krämer systems, it is always important to plan for current needs but also to calculate future needs so that a new system does not have to be purchased as soon as a little more waste is produced in the production. With this in mind, we design our systems with a high level of energy efficiency.

Does Krämer Lufttechnik use the latest CAD technology for planning and displaying plant layouts and individual modules?

Our technical designers plan Krämer systems with special and latest software that allows us to make the most precise calculations and changes so that the sizing of the plant is optimally tailored to the customer’s needs. 3D drawings and simulations are therefore standard for us.

Can the operation continue if an extraction system is installed or an old system is renewed?

With good planning and preparation, the installation of a new extraction system can take place during ongoing operations. However, this depends not only on good planning but also on the spatial conditions and the entire machinery with which the system must be connected. If an interruption of production is absolutely necessary, we are so quick to the site that this interruption is as short as possible.

Can I also lease the extraction system?

So far, we do not offer leasing of our extraction and disposal systems. This is because our systems are designed for the specific needs of our customers, and therefore the reuse of a returned device is very difficult. If you are interested in a leasing model, please contact us!

Is Krämer Lufttechnik ISO certified?

Krämer Lufttechnik has been certified according to ISO 9001 for decades and is subject to an annual quality audit.

Service questions

Can I just get advice from Krämer Lufttechnik at first?

Before any investment decision in an extraction and disposal plant, there are many questions, such as: What exactly do I need? What is the flow behavior of my waste? How well can the plant handle different loads? How well can the plant be expanded for future needs? Only once these and other questions are answered can the decision to invest be made.

How can I remotely control my extraction and disposal plant?

Our digital control systems enable remote access via any PC that has the software and authorization to control the plant. The software setup is straightforward.

How high is the maintenance effort of a central extraction system?

The maintenance effort of Krämer systems is very low. Depending on the type and amount of waste, however, it may be necessary to perform maintenance once a year. This can be done by us or by the trained technician of the customer.

Does Krämer Lufttechnik also take on maintenance contracts for systems that were not designed by Krämer Lufttechnik?

Yes, but we first make a detailed assessment of the existing system and a risk assessment.

Product questions

What happens to the extracted dust?

The extracted dust is separated from the air in a filter system. The cleaned air is returned to the production hall, and the dust is transported, via a discharge element (screw conveyor, agitator, etc.) below the filter, and then pressed into pellets or otherwise recycled.

What happens to the extracted material?

The extracted waste material is transported away from production and either recycled loosely, temporarily stored, or – usually – first compressed into bales or containers. For particularly bulky waste, it may be necessary to shred the material before transport to make the further transport more energy-efficient.

What about the edge strips?

Edge strips and trimmings occur in the processing of paper, printed products, foils, and cartons. If these are not quickly removed from production, they can cause disturbances or even production interruptions. In addition, these wastes can be compacted and further used as recyclable material.

Can the extracted air also be cleaned and reused?

Standardly, Krämer extraction and disposal systems feature so-called clean air recirculation. This means that the dust- and particle-laden hall air, which is usually air-conditioned, is cleaned and then returned to the hall. This saves valuable energy, especially in winter, as the air does not need to be heated twice.

Are some system parts also available in stainless steel quality?

Some types of materials or special production conditions require certain system parts to be made of stainless steel, especially in the food filling and pharmaceutical industries. In our production, we are able to process stainless steel and offer it to customers in the appropriate quality.

Accordion Title
Accordion Content

Industry questions

Do all parts of the extraction system (including filters) have to be installed in halls, or are there also weatherproof versions for outdoor use?

In new constructions of production facilities, parts of the extraction system are often designed for outdoor use from the outset. The weatherproof design ensures that these system parts are as durable as the system parts in the indoor areas.

Does Krämer also offer dosing devices for filling material?

Dosing devices for filling material are used in various industries, such as in the filling of packaging materials, food, or plastic granules. Depending on the filling material, Krämer Lufttechnik offers different types of dosing devices.

In PET bottle recycling: at which stages are Krämer systems used?

Krämer systems are used in the collection of contaminated or too old bottles that cannot be cleaned and reused. These bottles are captured from the bottle carousel, shredded, and introduced into the recycling process. Non-recyclable PET bottle caps are also captured and sent for recycling.

In the production of food packaging: how are cutting and punching remnants removed from the production so that they do not disrupt the flow?

Cutting and punching remnants are captured directly at the machines where they occur. From there, they are sent for recycling or shredded beforehand if they involve particularly bulky die-cut grids or cartons.

In the production and assembly of nonwovens and technical textiles: how does the capture and extraction of dust and fibers work?

Capture occurs directly at the machines where the nonwoven fabric is trimmed, ensuring that both dust and cutting remnants do not enter further production and treatment of the fabric. The captured dust and waste material are then transported away and sent for recycling.

Are Krämer systems also suitable for extracting dust that arises during the filling of foods such as tea, coffee, or other loose goods?

During the filling of foods into final packaging, such as loose tea into tea bags, dust is produced. This dust is extracted directly at the point of origin by Krämer systems and disposed of so that the actual product is not contaminated. Moreover, the machine environment must remain dust-free to ensure the workplace is not harmful to employees’ health.

Extraction and disposal systems for dust chips and process waste

© Krämer Lufttechnik 2024