PU or polyurethane casting by China Prototyping Center

We offer low volume production by Polyurethane casting or vacuum casting (RTV)

PU resin casting is a prototyping technology used when you need a small series or short run of your 3d cad model made out of a PolyUrethane with properties close to real injected plastics such as ABS, POM ,PA or TPE's. Usually  series of 5-100 pieces will be run.

The process:

The first step of PU Casting process involves encapsulating/enclosing a master model in a liquid Silicone rubber. Than a vacuum is applied to the mould. The mould is then cured in an oven at around 70°C

Once cured the mould can be split up in 2 or more parts, at which point the master model is removed leaving a mould cavity perfectly replicating the master model.

what is possible with vacuum casting?;

We can make double or triple shot products, we can cast rubber or TPE or TPR like materials. (with 20-80 shore A hardness)

We can vacuum cast optical clear plastics ( same like PMMA)

WHAT ARE THE ADVANTAGES OF PolyUrethane casting?

The main advantages of this process are lower tooling costs and a quicker turn-around than traditional mould making (e.g. moldings within days of receipt of masters) The products have an exceptional detail and accuracy.

Minimal shrinkage permits use of duplicates or sub-masters for multiple impressions, useful if originals are delicate. Flexible moulds and inserts allow significant undercuts, simplifying mould-making and containing costs.

Rapid prototype in China

Since a couple of years China is an ideal country to make your rapid prototypes, why is that?

Once you need CNC machined prototypes China can be very competitive. Prices or much lower for CNC milling real working models directly from your Cad system.

First of all, the basic price of basic sheet material, like ABS sheets or blocks, is lower than in the Western world. Even PA + 30% glass filled blocks can be milled.

Second the cost per hour to machine the 3d model is less than in Europe or US. Often local or Taiwanese CNC centers are used that are very suitable for the job, also overhead factors like electricity is a fraction of that in the Western world.

And last but not least to finishing the prototype model, often done by a Chinese low cost worker, can be done quickly and at low cost. We don’t have to explain the difference in labor costs.

In our company, China rapid prototype Center, we strive to make the same or better quality than in the West, with a lot of cost savings for you!

If you have any rapid prototyping china request please let me know. You can visit our website or email me :

info@prototypingchina.com

What is SLS

SLS is an abbreviation for Selective laser sintering, and is, just as SLA an additive manufacturing method using a laser beam. This laser beam bonds small powder parts either rmade of plastic, metal, ceramic or glass.

SLS system

Advantages

Disadvantages

SLA technology or Stereolithography has been named also:

3D printing, optical fabrication, photo-solidification, solid free-form fabrication, and solid imaging.

sls and sla