News from LWB
New concept for big machines to reflect changing market demands
A popular topic of discussion at the moment is whether it is better to overhaul old machinery from existing holdings, rather than investing in new machines. Despite the fact that they are left with what is still an old machine, some firms often opt for the overhaul option on the basis of the lower capital outlay required.
LWB Steinl has actively attempted to tackle this problem, defining a new class of “starter machine” to suit the situation.
Fighting brand and product piracy
Product piracy is the prohibited copying and reproduction of goods that infringe the intellectual property, design and process rights held by their legal manufacturers. Brand and product pirates illegally use for their own products the technical expertise that a company has acquired following many years of hard work and the investment of tremendous financial resources.
LWB EFE injection technology now available
for ENGEL-machinery
Cooperation LWB Steinl – ENGEL
Altdorf, Germany – April 2010. German machinery manfufacturer LWB Steinl, who successfully introduced their patented EFE injection technology for cure time reduction in the market, has decided to license this technology to the Austrian machiner manufacturer ENGEL. After efficient and satisfying negotiations, ENGEL is now the second company in the market who is offering the EFE technology for cure time reduction and increased output for rubber machinery.
-> read more…
Our injection technology, Your competitive advantage.
See for yourself!
We are inviting you to carry out a “test run”, which you are welcome to undertake using your own mould and compound materials on our machines. Visit us at the new LWB Technical Centre and be delighted by your products, manufactured by you on our machines.
THE NEW LWB THERMO-CLASS
Tremendous cost saving potential because of the small floor space required as well as the reduction of handling time is a characteristic of this machine. We are offering this machine in the range of 50 to 100 tons in a modular system, enabling you to individually choose the design of your machine among 16 different combinations!
Deutsche Kautschuk-Gesellschaft honours LWB for performances in innovative products with the “Product Award 2009”.
By presenting the LWB “EFE”-technologie during the K`2004 the industry started a progess with regard to systems for increased efficiency achieved by cure time reduction. Since 5 years utilized in the industry, the “EFE” technology has set a new trend leading to more economic production systems…
130 participants were attracted by the Tech Days by LWB Steinl on Sept.11th and 12th.
At this meeting, LWB Steinl presented the latest development regarding their machines. Not only LWB customers from the industry but also suppliers of peripheral device shared the meeting.
-> Press release Tech Days 2008
EFE – The injection moulding system that reduces curing time is now available with a 115 cm³ shot volume.
During the manufacturing process of high volume moulded rubber parts, the EFE injection moulding unit will save up to 50% in curing time in comparison to the conventional injection systems. LWB-Steinl has recently unveiled to the public an EFE injection moulding system with a shot volume of 115 cm³ during the LWB – TechDays in October 2006.
“This progression was the logical consequence of the results that we achieved with the, then smallest, EFE injection unit with a 630 cm³ shot volume. Our customers also take advantage of the EFE injection moulding unit for moulds with smaller shot weights”, reports Rainer Schmidt, Technical Director at LWB-Steinl. Therefore, before commencing the development of a smaller injection system, samples of various customers’ moulds in their original form, with a shot weight of less than 100 cm³, were taken. In order to accomplish this, bellows, plugs, buffers, gaskets and even O-rings were produced with a significant reduction in curing time. The results illustrate the evident savings in curing time with every mixture used. As of now, they have been achieved from NR, SBR, EPDM, CR right up to ACM, HNBR and FKM.
Interesting results were also achieved during the use of the EFE injection moulding unit for corner vulcanisation. During this, an additional advantage of this new technology became evident. On the one side, the curing times for corner vulcanisation were achieved, which reduced the cooling time of the TPE processor. On the other, the EFE injection moulding unit delivered outstanding results with the use of flocked profiles. Therefore, they can now act contingent upon the material’s temperature and be produced at a lower moulding temperature. This reduces the risk of burning the flock, which leads to reduced failure rates and a reduction in the mould cleaning cycles.
The new, small injection unit, will come into circulation with the vertical C- Frame machines as well as the horizontal tiebarless machines with a clamping tonnage of up to 1,000 kN.
Reduce your curing time by 30% and more without having to undertake changes to your mixture or your mould! The new technology injection units were initially introduced during K’04 in October 2004 in Düsseldorf. This was when and where a reduction in curing time of up to 30% was revealed. The feedback from customers who have installed this technology is now available. Our expectations have been exceeded. Reductions in curing times of up to 50% have been achieved!
Up to now, the temperature of the injection moulding unit has been adjusted so that the pre-curing of the mixture, in the injection unit, has ruled out specifically the remaining left-over material in the injection cylinders and the nozzles. The concept of the new injection unit is based on a temperature increase for the material, by means of dissipation and thermal conduction, during the injection as well as a complete spraying of the nozzles on the machine. As no left-over materials remain in the injection unit, substantially higher material temperatures can be noticed. Through the higher mass temperatures, especially with regards to the core article in large volume products, it appears that there is a significant reduction in curing time. The results presented are underpinned through physical tests of the relevant products.
Skeptical? Test your mould with our application technology using your original mixture. Simply register for a trial at:
heizzeitreduzierung@lwb-steinl.de
For more detail see EFE-injection system as well as brochure “VS-Class EFE”:
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Download brochure "VS-Class mit EFE Technologie" - 447 kB |
Retrofitting with EF-E injection units
including Rapid Cure element
The outstanding advantage of this new injection unit technology comes into effect with hot runner moulds. Through the Rapid Cure Element, between the horizontal FIFO unit and the vertical injection device, an increase in mass temperature is achieved through dissipation. The Rapid Cure Element achieves a homogenous distribution of the temperature in the mass, in order that the temperature is not only increased in the periphery, but also inside the material stream. As all the material from the vertical injection cylinder will be injected in accordance with the patented ALL-OUT technology, the mixture in the mould can be brought up to a higher temperature so that a shorter curing time can be achievable.
The modification of existing machines can be carried out smoothly as the EFE injection moulding units are delivered with its own hydraulic module and terminal control. The necessary exchange of data takes place using a previously defined exact interface. This enables a simple exchange of signals with the machine. The visualisation of the data process takes place on the screen. With this concept, the EFE injection moulding machine can be retrofitted with a reasonable amount of money (almost as much as every existing rubber injection moulding machine). So let’s significantly reduce the curing times in existing machines.
Take advantages of a reduction in curing times through the retrofitting of EFE – technology for your existing machinery.
For more details see our brochure “EFE-Retrofit”:
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Download brochure "Retrofit EFE-Technology" - 326 kB |
tel +49 (0) 871 / 3 08-0 • fax +49 (0) 871 / 3 08-180
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