Aluminium (polished or PTFE-coated)
Deltavorm produces aluminium moulds in-house. The surface of aluminium moulds can be polished or PTFE coated.
Deltavorm offers high-quality food-approved non-static industrial PTFE coating. The unique non-stick quality of this coating ensures the best printing quality. Moreover, Deltavorm offers non-static PTFE coating, which is an important characteristic of the coating. Pressing PTFE in dry starch would otherwise cause a static charge to build up in the coating, which in turn causes the starch to stick to the PTFE. That would be counter-productive.
Aluminium moulds can also be polished. Deltavorm can offer high-quality and low-cost polishing by the use of automated polishing machines. These machines run unmanned, following a sophisticated polishing process. This results in a constant and high quality mould surface. No coating is needed.
Aluminium offers considerable advantages, both in comparison to alternative materials and to other metal moulds on the market. The advantages of our aluminium moulds can be summarised as follows:
- Low risk
Liability risks are reduced as the metal does not break. Metal detectors will find the moulds if they come off the frame – aluminium is conductive.
- Return on investment
The total costs of aluminium moulds are low in case of high volume products. The superior durability of the moulds leads to reduced down-time of the line, reduced waste, minimum maintenance and cleaning and reduced replacement costs. The superior design of airflow boards might add increased production speed (more trays/minute) to the equation, resulting in an even better ROI.
- Constant and high quality
Whereas materials like plaster are vulnerable to wear and tear, metal moulds virtually last forever if they are treated well and thus the quality will be constantly at the same (high) level.
- Possible surface treatments: PTFE coating or polishing
PTFE has unique non-stick characteristics that will result in a superb print quality. Especially highly detailed shapes or shapes with texts will benefit from PTFE coating. Deltavorm offers non-static PTFE coating. Polishing is a surface treatment that elimates the need for a coating altogether.
- Screw holes
Aluminium moulds will always have one or more screw holes in the bottom. They are of superior quality as they have been milled rather than tapped. We recommend screwing the moulds to a metal board, so that the connection is conductive. Any static charge can then be dissipated. Of course, the exact location and size of the screw holes can be discussed, or we can send a proposal. Gluing aluminium moulds is also possible.
Procedure - The procedure for metal moulds is clear and organized in such a manner that miscommunication is prevented and top-quality ensured.