Wacker to showcase self-adhesive liquid silicone rubber at K 2022

To premiere its novel Elastosil LR 3078 product series at Düsseldorf

49
Wacker
Adhesion tests show that WACKER’s new self-adhesive silicone rubber Elastosil LR 3078 adheres firmly to polycarbonate without pretreatment. (Photo: Wacker)

Wacker will be premiering its novel Elastosil LR 3078 product series at K 2022 International Trade Fair for Plastics and Rubber. These self-adhesive liquid silicone rubber grades cure extremely fast and establish a firm bond with the thermoplastic polycarbonate without the need to pretreat its surface. Elastosil LR 3078 was designed for two-component injection molding and enables cost-effective large-scale production of multicomponent parts, such as those needed in medical technology and the automotive industry. This year’s K show will take place from 19 to 26 October in Düsseldorf, Germany.

With Elastosil LR 3078, Wacker is expanding its portfolio of self-adhesive liquid silicone rubber with a product line that adheres specifically to polycarbonate. The grades in this series are formulated in such a way that, as they cure, chemical adhesion builds up to the substrate, but not to the injection molding tool. To this end, Wacker uses a newly developed and patented self-adhesive technology that does not contain any bisphenol A structures. By eliminating this substance class, the company increases occupational safety and contributes to consumer protection.

All grades of the new product line can be easily processed by two-component injection molding. They do not contain any substances that could result in solid deposits forming in the mold during processing. This ensures that the injection molding machine runs without interruptions.

Thanks to the fast curing of the new liquid silicone rubber grades, injection molding cycle times are very short. In addition, devices with complicated geometric shapes can be produced with high precision and without the need for secondary finishing. Elastosil LR 3078 thus opens the way for further miniaturization of polycarbonate-silicone hybrid parts and for completely new product designs.

The Elastosil LR 3078 product line comprises the hardness grades 20 to 70 Shore A and thus covers the entire hardness range that is important for the soft component of hybrid parts. All grades are translucent and can be colored as desired. The cured products are characterized by very good mechanical properties. They achieve a very low compression set. This is ideal for sealing applications. When relaxed after being compressed at high temperatures, a part molded with Elastosil LR 3078 will only show a small amount of deformation remains thanks to the material’s elasticity. Sealing lips made of Elastosil LR 3078 therefore retain their function over the long term.

Cured Elastosil LR 3078 products have passed selected tests for biocompatibility according to ISO 10993 and US Pharmacopeia Chapter <88>, Class VI. They can also be steam-sterilized repeatedly at 134 degrees Celsius with no loss of mechanical properties or adhesion to polycarbonate. The new liquid silicones are therefore also suitable for manufacturing two-component parts for medical devices.

Elastosil LR 3078 can be used in all industrial sectors. Applications range from transparent covers as needed in motor vehicles, to housing covers for household appliances, to systems for medical diagnostics, automated drug delivery and minimally invasive diagnostic and surgical techniques.

Visit Wacker at K 2022 in Hall 6 at Booth A10.

The Covid-19 pandemic led to the country-wide lockdown on 25 March 2020. It will be two years tomorrow as I write this. What have we learned in this time? Maybe the meaning of resilience since small companies like us have had to rely on our resources and the forbearance of our employees as we have struggled to produce our trade platforms.

The print and packaging industries have been fortunate, although the commercial printing industry is still to recover. We have learned more about the digital transformation that affects commercial printing and packaging. Ultimately digital will help print grow in a country where we are still far behind in our paper and print consumption and where digital is a leapfrog technology that will only increase the demand for print in the foreseeable future.

Web analytics show that we now have readership in North America and Europe amongst the 90 countries where our five platforms reach. Our traffic which more than doubled in 2020, has at times gone up by another 50% in 2021. And advertising which had fallen to pieces in 2020 and 2021, has started its return since January 2022.

As the economy approaches real growth with unevenness and shortages a given, we are looking forward to the PrintPack India exhibition in Greater Noida. We are again appointed to produce the Show Daily on all five days of the show from 26 to 30 May 2022.

It is the right time to support our high-impact reporting and authoritative and technical information with some of the best correspondents in the industry. Readers can power Packaging South Asia’s balanced industry journalism and help sustain us by subscribing.

– Naresh Khanna

Subscribe Now

LEAVE A REPLY

Please enter your comment!
Please enter your name here