CNC milling plastic
Although Landes is a “machining company with a focus on metals”, we also carry out CNC milling of plastics. We can even advise you on the choice of plastic from the various kinds available, because each one has its advantages and disadvantages.
We will take you through some of the most widely used materials:
Polyamide is impact resistant, tough and vibration absorbent. This makes it ideal for mechanical parts, in particular those loaded under higher temperatures and which come in to contact with oil or solvents.
Polyamide is not very water resistant. The absorption of moisture has a negative effect on the dimensions and electrical characteristics.
Polyacetal is very similar to nylon, except it is stiffer and tougher, in particular at higher temperatures. In addition is doesn’t absorb any moisture.
POM is sensitive to ultraviolet light. This is why it is often used outside in the colour black.
Polyethylene terephthalate (PET)
This plastic is mainly known under the brand name Arnite. It is very hard, stiff and durable. It also doesn’t distort and can take a high surface pressure. This makes is particularly suited for cog wheels with a small module and high-accuracy components. It is used widely in the food industry.
PTFE has a high resistance to chemicals. This makes it difficult to glue and sticky materials hardly attach to it. This is why it is frequently used in gluing equipment, bakery drums and binding layers.
PTFE also has a low friction coefficient, which makes it suitable for plain bearings, packaging and plugs.
Polyvinyl chloride (PVC)
PVC is resistant to many chemicals and is easy to weld and glue. This is why it is so universally used. Everyone has of course heard of PVC.
Polyethylene (PE/ UHMWPE)
Polythene is extremely impact and wear resistant. It is also water resistant, which is why it is often used in the food industry and in refrigeration applications.
There are various compounds with different mechanical, chemical and thermal characteristics.
Polyvinylidene fluoride (PVDF)
PVDF is a relatively new polymer with some remarkable characteristics: excellent resistance to aging and UV and gamma rays, very distortion resistant (including at high temperatures) and fire and wear resistant. It is suitable for several applications, including in the food industry.
The most remarkable characteristic of PEEK is its resistance to high temperatures, without distortion. This is why it is used extensively to protect electrical equipment from high temperatures and chemically aggressive materials.
PEEK is also suitable for mechanical components, constructive elements and electronic components.
Polycarbonate is mainly known as ‘unbreakable glass’. Its impact resistance is 200x higher than window glass.
Moreover, polycarbonate is also fire resistant (rating class 2). This makes this material ideal for all kinds of applications where safety is first priority.