Quotes for China Plastic Production
In most cases, 3D CAD data (provided by you or
generated by us) is required in order for us to prepare an accurate
If you do not yet have 3D CAD data, the Titoma Group
is very well equipped to generate this for you; our
design department specializes in optimizing plastic
parts for low cost injection molding in China. You
can just send us what you have: sketches, 2D files
or sample parts, and we will give you a rough
initial estimate. If the estimate is acceptable we
then charge only a nominal fee to build a
3-dimensional computer model and
optimize the parts for low cost manufacturing in
China at the same time in order to lower the
eventual cost of the tool. For 2D data, AutoCAD (.dwg) is the most popular
format and may be acceptable for
parts with a relatively simple geometry; in fact,
for metal stamping parts it is still quite common to
use 2D data.
Preferred file formats for
3D CAD data
This software is the de facto standard for 3D data
in Taiwan & China.
IGES is a general 3D export
format (such as .jpg for pictures), which every tool
maker in China can read and use. It can help avoid
issues with incompatible software versions. The
disadvantage of IGES is that data cannot be very
easily changed as information is lost during the
IGES file creation process. ProEngineer and
SolidWorks are easier to work with if design changes
We recommend compressing your files before
sending them (using ZIP or similar). IGES files
in particular can often be compressed to 10% of
their original size.
In order to prepare a binding quote on a tool, The Titoma Group
asks for responses to the following basic questions:
1. Export vs. Local
Is the tool destined to be used in China or in your
own country? If Titoma fabricates the parts for you
in China, we can offer you much cheaper tooling
prices (sometimes half as expensive) because local
Asian components can be used. This includes for
example Yudo hot-runners from Korea, offering better
quality than DME and very good service. Imported
hotrunners like those made by PSG sell in China for
as much as 6 times the European price.
For export tools Titoma will need to know exactly which
injection machine the tool will
be used on and in which geographical area. We build tools with any Western
brand name components you specify, which makes repairs and replacements simple.
The general export tooling process is as follows:
1. We design the mold according to your verified, approved specifications
2. The tool is built
2. We manufacture sample parts on our injection machines, and also make you a
video so that you can see the tool in action
3. Upon approval of sample parts, tooling balance is due
4. Tool (and optional first lot of plastic parts) is shipped (normally via sea freight)
2. Lot Size
How many plastic parts will be ordered in each lot? Most injection molders
prefer runs of at least 5,000 pieces, but short runs are also available.
The problem with short runs for injection molding
is that for each production run the tool must be taken out of storage, mounted on the
injection machine, warmed up and tuned. In general the first 30 injection
shots are wasted, and after use, the melted plastic must be cleaned out of the
machine for the next run. For these reasons, costs
can go up quite a bit for short runs, so we always
recommend that our clients combine lots together as
much as possible, which also saves on
For production orders worth less than US$ 5,000 Titoma normally charges a
setup fee of US$ 400 per tool per run, although for large tool packages Titoma
sometimes offers the first run as part of the tool test procedure, so the fee
may not apply for that first run.
3. Required tool life
How many parts do you need the tool to be able
to make in the coming years? A standard P20 steel
China tool can offer around 200,000 cycles, but with
harder grade/hardened steel, the tool can often do a
million or more.
4. Do you need Rapid Tooling?
Titoma can do rapid tooling using our
proprietary modular tooling system, resulting in
real tooled plastic parts in 2 to 3 weeks. We can
use aluminum (soft, quick to mill) or P20 steel (the
standard in China) or even S7, a very hard, long
lasting steel. These rapid tools are guaranteed to
produce 50,000 cycles, but in practice can often do
close to 100K. Normal tools take 5 to 6 weeks in
Taiwan and 6 to 8 weeks in China.
If you wish to produce a lot of parts per month, Chinese Plastic Injection
Molding can provide a tool
with 2, 4, or 16 cavities. For example, for a tool with 2 cavities, each time
the plastic injection machine runs a cycle of injecting, cooling, opening, and pushing
out parts, 2 plastic parts would be made instead of one. Multiple cavities
multiply speed and they also reduce costs because less machine time is used per
part and less plastic is wasted. A 2-cavity tool costs roughly 1.6 times as much
6. Choice of Plastic
It is important for us to know beforehand which
kind of plastic will be used to make your parts, as
different kinds of plastic have different shrink
rates. The 3D models our
engineers make are exactly the size the final parts should be,
but the tool makers actually make the tool core slightly larger, so that when
the hot plastic cools and shrinks, parts of the correct size will result. If
changes are made to plastic types after tool design, tools may need to be
reworked, and charges are incurred during this process.
Many of our
clients use ABS plastic, and there are also many
others such as PP, PET, POM, rubber, etc. to choose
from. We can also add glass fiber to give parts
depends on what you need the parts for, and under
which circumstances the plastic parts will be used.
The choice of plastic also affects the parts
and tooling in several ways; for example, the use of plastics filled with
glass fiber will shorten your effective tool life because the
fibers erode the metal.
Our engineers are happy to give you advice in this choice. If you are uncertain about the type of plastic you desire,
Chinese Plastic Injection Molding can first
use a CNC machine to mill prototypes of your parts and then make replicas in
different kinds of plastic using a silicone rubber mold.
7. Complete contact details
We will need your company address, telephone
number, and email address.
Does your company have a website? Who do you
wish us to communicate with for various types of
The preceding information is a summary of what we normally need to ask before
providing quotes. Please do not hesitate to ask if you have further questions
about what Titoma may require in order to best serve your needs.
We look forward to getting to know you better and
serving your tooling needs.