Lithoz GmbH of Wien at COMPAMED 2017 in Düsseldorf -- MEDICA Trade Fair
Manufacturers

Lithoz GmbH

Mollardgasse 85A/2/64-69, 1060 Wien
Austria

Telephone +43 1 9346612210
jwaerter@lithoz.com

This company is co-exhibitor of
ADVANTAGE AUSTRIA Wirtschaftskammer Österreich

Hall map

COMPAMED 2017 hall map (Hall 8b): stand F03

Fairground map

COMPAMED 2017 fairground map: Hall 8b

Our range of products

Product categories

  • 12  Packaging and print
  • 12.04  Labelling, bar coding, printing
  • 12.04.03  Printing equipment

Our products

Product category: Printing equipment

ADDITIVE MANUFACTURING SYSTEMS FOR CERAMICS

Lithoz provides industry and research with additive manufacturing systems for the production of high-performance ceramics. The individual system components are perfectly coordinated and guarantee high-quality parts made of high-performance ceramics, directly produced from correlating CAD data. Moreover, Lithoz’ product portfolio includes various ceramic materials and software products optimized for 3D-printing as well as customer-specific solutions for complex challenges.

CERAFAB 7500 & CERAFAB 8500
Lithoz’ CeraFab systems are reliable and user-friendly plug-and-play network printers that perform in stand-alone operation. They facilitate the production of high-performance ceramics with material properties found in conventional manufacturing processes. Through the elimination of tools and a minimal level of material consumption within the production process, it is now finally possible to economically manufacture prototypes and small batches of high-performance ceramic parts.
 
High-Quality Parts
Parts that have been manufactured using LCM technology exhibit similar or equal material properties to those that have been manufactured using conventional methods. For instance, the manufactured alumina parts have 99.4 % of the theoretical alumina density (>3.96 g/cm3) and a 4-point bending strength of 430 MPa. Zirconia parts have a density of 99.6 % of the theoretical value and a tensile strength of 650 MPa. Moreover, the manufactured parts display excellent surface quality (alumina: Ra~ 0.4 µm, zirconia: Ra~ 0.6 µm) without post-processing.
 
OPERATING PRINCIPLE OF THE CERAFAB SYSTEMS
The LCM technology was developed by Lithoz and is based on the principle of photopolymerization. Ceramic powder is homogeneously dispersed in a light-sensitive organic matrix and selectively structured through mask exposure.

The body of the CeraFab system consists of a vat, filled with a photocurable slurry. Through the rotation of the vat, a layer of slurry is applied with a static wiper blade. The vat is transparent so that the slurry can be lit from below. Lithoz uses a specially engineered projection system, whereby the light engine and the custom optical system are perfectly attuned.

LEDs are used for light exposure, due to their long working life, homogeneous light distribution and consistent output. The projected image is generated via a digital mirror device (DMD). The mirror array consists of more than two million mirrors, which are lit by the LEDs, and can be operated individually. Each of these mirrors can be turned on or off separately and simultaneously, which enables dynamic mask exposure. The advantage of this procedure is that the entire surface area is exposed at the same time, making the duration of light exposure independent of the size of the cross section to be exposed.

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Product category: Printing equipment

LITHOZ' LCM-TECHNOLOGY

FOR THE ADDITIVE MANUFACTURING OF HIGH PERFORMANCE CERAMICS
 
Lithoz offers a process for the additive manufacturing of high-performance ceramics which is called Lithography-based Ceramic Manufacturing (LCM)-Technology. The LCM-Technology allows the production of high-performance ceramic parts with the same material properties as conventionally formed parts. The development of the LCM-Technology started in 2006 at the TU Vienna by the founders of Lithoz. In 2011 the Lithoz GmbH was founded as a spin-off of the TU Vienna.
 
The term additive manufacturing describes processes with which three dimensional objects are created by stacking individual layers. In the last few years, additive manufacturing, often referred to as 3D-printing, has emerged as an effective tool-free method for producing objects of diverse complexity straight from CAD data. The root of its success are the significant advantages that additive manufacturing technology offers industry and research.
 
  • cost-effective and fast production method for prototypes, single parts and small-scale series
  • customization and mass customization of products
  • improved products through function-oriented design
  • shortening of TTM and increased pace of innovation within the company
  • more flexible reaction to market needs
The LCM-Technology is a slurry-based process, where ceramic powder is homogenously dispersed in a photocurable monomer system and selectively polymerized through mask exposure to initially give the so-called green part. These green parts are basically composites of ceramic particles within a photopolymer matrix, which acts as a binder for the ceramic particles. During the thermal post-treatment the organic matrix is removed via pyrolysis and the particles are densified during sintering to give the dense ceramic body. These two process steps are typically applied as well in the conventional ceramic forming technologies.

Generally speaking, the LCM technology is suited to process all powder-like and sinterable powders. This has led to processing a wide spectrum of customer-specific materials with the LCM approach over the last years.

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Product category: Printing equipment

Osteoconductive and Bioresorbable Bone Replacement Material

Due to their osteoconductive and bioresorbable properties, the ceramic raw materials tricalcium phosphate and hydroxyapatite are perfectly suited for bone replacement material and the production of scaffolds.

Scaffolds are implants of defined form and pore structure that are placed inside the body to treat substantial bone defects caused by accidents or tumor removal procedures. Bioresorbable implants are absorbed into the body and converted into endogenous bone tissue. Extensive knowledge of the inner structure that optimizes bone growth is needed for the development of newer scaffolds, and pore design plays an essential part in achieving the best possible osteoconductivity.
 
Challenges:

  • optimizing pore structure for optimal bone growth
  • production of various complex pore structure designs, adapted to match mechanical strains
  • searching for efficient methods to produce patient-specific implants from the first batch
  • flexibility in material selection
 
Solution:
  • fast production via LCM procedure
  • available materials: tricalcium phophate and hydroxyapatite
 
Benefits:

  • fast, inexpensive realization of different design variations to achieve perfect osteoconductive properties
  • fast and inexpensive production of test bodies for in vivo and in vitro tests
  • easy realization and testing of different design variations
  • particularly high feasibility of small passageways of up to 0.4 mm in diameter
  • web thickness of less than 0.3 mm attainable
  • easy customizability of implants
  • variation of the unit cell

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About us

Company details

Lithoz specializes in the development and production of materials and additive manufacturing systems for 3D printing high-performance ceramics.

The interdisciplinary collaboration of specialists in the fields mechanical engineering, process engineering and chemistry has led to the development of a manufacturing system, which allows the production of ceramics suited for industrial and medical use.

This Austrian-based system is specifically intended for the production of highly precise and complex applications. The produced components meet the high demands of density, stability and precision that the ceramics industry and ceramic research requires.

Lithoz’ in-house specialists possess expert knowledge concerning the entire manufacturing process of ceramics. The company offers its customers professional consultations as well as customer-specific solutions along the entire value chain.

The constant improvement of our products and services are an integral part of Lithoz’ business model. It is through the collaboration with various research facilities and the lively exchange with our customers that we can steadily improve on our range of services and perfectly adapt to our customers’ quality requirements.

We also readily support our customers in the realization of national and international research projects.

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