Manufacturing
of products with one or more materials with graded structures in a
single process using additive technology is now possible, according to
a European funded project.
Netherlands, Kingdom of the (Press Release) October 23, 2007 --
The new additive production system,
based on High-Viscosity Inkjet Printing, is being developed by TNO in
The Netherlands under the auspices of the Custom-Fit project. It has
several print heads that produce continuous streams of material droplets at high frequency.
Dr. Michiel Willemse is leading the team developing the inkjet printing machine at TNO. He says, “The process is unique in its capability to print highly viscous, UV curable, resins. Viscosities up to 500 mPa s have been printed successfully. This offers the opportunity to print products with unequalled mechanical properties when compared to any other printing systems.”
The High Viscosity Inkjet Printing machine is also capable of printing multi-materials simultaneously. Currently, most additive manufacturing machines are only capable of printing one type of material. Not only is the TNO inkjet process capable of printing multi material, it also enables the mixing and grading of materials in any combination that is desired. This will enable the manufacturing of products with two or more materials that are graded and there will be no distinct boundary between the materials. This will result in products with unique mechanical properties. To enable the modelling of products with multi-material and graded structures, TNO has developed a CAD modeller known as, Innerspace.
Currently, the system is able to print bio-compatible materials; the next step for the project would be to print scaffolds for implants using bio-resorbable materials, with varying porosity and graded inclusion of growth enhancers and anti-biotics. Dr. Willemse says, “The big challenge is the further development of the concept of printing bio-resorbable implants. Improvement of the machine is a minor effort compared to approval of the medical procedure for modelling a graded implant, printing and sterilising it, and implanting it into a human patient. Given the level of innovation in both technology, material and medical procedures, acquiring the approval from relevant authority such as FDA (Food and Drug Administration) will require a much bigger effort.”
Visit Custom-Fit at http://www.custom-fit.org/
Dr. Michiel Willemse is leading the team developing the inkjet printing machine at TNO. He says, “The process is unique in its capability to print highly viscous, UV curable, resins. Viscosities up to 500 mPa s have been printed successfully. This offers the opportunity to print products with unequalled mechanical properties when compared to any other printing systems.”
The High Viscosity Inkjet Printing machine is also capable of printing multi-materials simultaneously. Currently, most additive manufacturing machines are only capable of printing one type of material. Not only is the TNO inkjet process capable of printing multi material, it also enables the mixing and grading of materials in any combination that is desired. This will enable the manufacturing of products with two or more materials that are graded and there will be no distinct boundary between the materials. This will result in products with unique mechanical properties. To enable the modelling of products with multi-material and graded structures, TNO has developed a CAD modeller known as, Innerspace.
Currently, the system is able to print bio-compatible materials; the next step for the project would be to print scaffolds for implants using bio-resorbable materials, with varying porosity and graded inclusion of growth enhancers and anti-biotics. Dr. Willemse says, “The big challenge is the further development of the concept of printing bio-resorbable implants. Improvement of the machine is a minor effort compared to approval of the medical procedure for modelling a graded implant, printing and sterilising it, and implanting it into a human patient. Given the level of innovation in both technology, material and medical procedures, acquiring the approval from relevant authority such as FDA (Food and Drug Administration) will require a much bigger effort.”
Visit Custom-Fit at http://www.custom-fit.org/
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