We are all proud of 50 years of LENSER!
You are invited to take a look at the milestones along the journey of our success.
We have illustrated many milestones from the past in our time line- one which also extends out to the challenges we hope to solve with you in the future.
We hope you enjoy reading it!
You come into contact every day with products that are produced with the help of LENSER filter elements, almost certainly more often than you think!
That’s Lena
Accompany Lena in her everyday life and build up a reservoir over her contact points with LENSER.
Toothpaste
Silicates
Ceramic washbasin
Kaolin
Drinking water
Tap water
Shower Gel & Soap
Silicates, waste water
Chocolate cream
Vegetable fats
Bread
Sugar, Yeast
Jewellery coatings
Galvanic surface coatings
Sunscreen
White pigments
Vehicle coatings
Colour pigment in the varnish
Car tyres
Soot, silica
Bakery products
Pectins
Birthday cake
Sugar
Chocolate icing
Vegetable fats
After-work beer
Beer mash
Newspaper Printing
Color pigments
Since the company was founded, LENSER has set standards in filtration technology with a multitude of product developments. We made plastic compression molding a recognized process for the production of filter elements as well as the use of polypropylene as a versatile raw material.
Maintenance
21 employees are responsible for tool preparation for the presses, repairing the machines, and welding. Maintenance also includes a cleaning and storage area.
Press plant, membrane presses & chamber presses
Approximately 45 employees are employed here and work on membrane presses and chamber presses. The granulate is delivered from the adjacent silos, with which the presses are then filled. The granulate is scattered into the press with an insert frame and has to cool down for one day after processing.
Extruder
The respective plastic material is transported from the silos to an intermediate basin via a suction cup. There further components such as blowing agent, paint, stabilizers or regranulate are individually adapted to the order according to the customer’s wishes and mixed with it.
Boiler Facility
Since our decision to stop heating with heavy fuel oil, we have been operating two natural gas boilers that can produce 10 tons of steam per hour at full capacity.
Membrane presses
The granulate is delivered from adjacent silos and is used to fill the presses. The granulate is sprinkled into the press with the help of an insert frame and then pressed under enormous heat. After coming out of the press, the unfinished molding blank has to cool down for one day.
CNC
The material is machined on various 3- and 5-axis machines. Specially programmed sequences also help to produce complex shapes semi-autonomously and with a high degree of precision.
Regranulation
We use a regranulating machine to increase the sustainability of our production processes. The left-over polypropylene which remains in the press plant in the form of residual material, spillover during pressing, as well as the chips created during the milling process is sucked up with a vacuum and routed to a pre-buffer silo which then feeds into the regranulating machine by way of an auger. Scrap and test plates are also recycled, cut up, and fed into the machine by a conveyor belt. The chips, chunks and small pieces are shredded by a large cutter knife and pressed into an extruder auger. By applying heat and friction, the solid plastic becomes soft and can be pressed through a nozzle. Directly behind this is a knife which cuts the extruded plastic into small pellets at high speed. The regranulate thus produced falls into a cooling circuit, is transported back into a silo, and is then reintroduced in certain proportions per defined production processes.
Individual machining
During individual machining channels are drilled and various accessories are welded and then cleaned and assembled. This is also where the prototyping department is located, which is able to produce single pieces.
Membrane production
In membrane production, the membrane halves and center webs are milled on various 3-axis machines and welded on our two state-of-the-art, purpose-built welding machines. The welded membrane elements are then milled and drilled again. Accessories are mounted or welded and finished according to customer requirements.
Dispatch warehouse
Modern facilities and processes are the basis for efficient storage and fast delivery of the products.
For 50 years LENSER filter elements have been used all over the world. We speak the language of our customers. Curiosity, interest, and process orientation were and still are the driving forces behind our employees, who are responsible for the fact that LENSER products could be found all over the world even at the beginning of the company’s history. LENSER is proud of its international heritage!
On July 1st, 1969, Horst Lenser founded the LENSER plastic molding plant in Senden. 22 employees worked for the young company. Horst Lenser made (initially for the chemical industry) creative, customized plastic solutions for the separation of solids and liquids using imagination, diligence, and a sense of responsibility.
LENSER suceeded in producing large-format plastic plates measuring two by four meters. By the standards of the time, the dimensions were sensational: LENSER products were almost twice as large as those of the competitors.
LENSER opened a subsidiary in the USA very early on; the beginning of the 70’s, in fact. After several relocations and management changes in the initial few years, filter elements also began to be produced there. Among other things, the production and launch of sealed and drip-free filter presses was particularly successful. This led to rapid growth for LENSER on the American continent, especially in the 90s.
Innovative product solutions have always been LENSER’s trademark. „Young, dynamic, flexible thinking and product development, and an intimate, familiar company structure“ was a pretty good description of the LENSER team in its early years. Nothing was left untried when it came to optimizing the solid/liquid separation performance of customers‘ filter presses. A notable milestone was the development of the first membrane filter elements.
After successfully producing the membranes, the development team worked on a more flexible, replaceable membrane solution for filter elements. This resulted in an innovative process that led LENSER to develop the first replaceable membrane filter elements and bring them to market in 1989.
Although LENSER was already able to establish numerous contacts to Asia in the 80’s, it was not until 1992 that a location in Southeast Asia became a reality. In particular, the LENSER palm oil membrane filter element was a guarantee for continuous and successful market growth in Asia. Already in the first years the number of employees grew to more than 20.
Target R&D breakthroughs became rarer as the company expanded. Instead, numerous iterative improvements were made, risk factors were minimized, and filter elements were developed and produced to exact customer specifications.
LENSER quickly gained a foothold in China. Not least due to a strong, competent team and effective distribution and Customer service will be LENSER products appreciated by customers in China. One plays an outstanding role in this the many years of process experience of the colleagues on site.
The publicly traded technology conglomerate, ANDRITZ, acquired the German manufacturer LENSER Filtration. A corresponding contract for the acquisition of 100 percent of LENSER Filtration GmbH & Co. Kg has been signed. In 2007, LENSER Filtration GmbH & Co. Kg was finally renamed as LENSER Filtration GmbH.
The largest welding system in the world is put into operation at LENSER!
With the launch of intelligent filter elements, LENSER succeeded in making the inner workings of filter presses visible and intelligible, thus laying the foundation for future innovations.
50 years of LENSER – we celebrate our anniversary! With pride, we look back on our company history. Now we focus on the future and thank all the customers and business partners, who have accompanied us to this day.
We serve customers in more than 150 countries around the world!
Our employees and partners communicate with almost 2500 customers all over the globe. Nearly 2000 of our customers are in industrialized nations and benefit from our filtration expertise in developed regions. More than 20% of LENSER’s business takes place in emerging markets.
Our Headquarters (Germany)
LENSER Filtration GmbH
Breslauer Straße 8
89250 Senden
Production(Romania)
ANDRITZ S.R.L.
Transilvaniei No. 21
555300 Cisnadie, Sibiu (Romania)
Sales Office (USA)
LENSER Filtration GmbH
117 South Arch Street
Montoursville, PA 17754-2303
Sales Office (Malaysia)
LENSER Asia Sdn. Bhd.
No. 20, Jalan PJU 3/49
Sunway Damansara
47810 Petailing Jaya, Selangor
Sales Office (China)
LENSER Filtration GmbH
15F, Tower B, Baoland Plaza
200082 Shanghai
Many years of experience and innovative ideas are at the heart of what our employees do. LENSER is proud to employ both experienced, long-term employees and young, creative colleagues.
We have long recognized that a company must invest in more than just machinery and buildings in order to be successful. First and foremost, it is the people who make the difference!
kilograms is the total gross weight of the products we‘ ship annually
is the average length of
employment at the Senden site
>10 years of employment
of granulate annually
combined years of professional experience
average age of our employees
produced and sold!
our machines run annually
