Manufacturer Plastic Part vacuum forming / thermoforming process
Fundamental Manufacturing Processes Study Guide, DV06PUB3 - 3 -
The most common methods of thermoforming include:
• Drape Thermoforming, in which the plastic sheet is stretched over
a positive mold. Once the
plastic seals against the mold edges, a vacuum is introduced
pulling the material tightly against
the mold contour.
• Cavity Thermoforming, in which a heated sheet of plastic is laid
over a negative or concave
mold. Once the materials seals at the mold edges, it is subjected
to a vacuum pulling the
material tightly into the mold.
• Pressure Thermoforming, in which material is positioned between a
pressure plate and a mold.
Air pressure is then introduced through the pressure plate forcing
the plastic against the mold
surface. Pressure thermoforming is used for finely detailed parts
and requires strongly made
• Plug Assist Thermoforming, which is similar to cavity forming but
with a male plug forcing the
material partially into the mold cavity. A vacuuming completes the
thermoforming and is
sometimes aided by positive air pressure. This thermoforming method
is particularly fast and
helps maintain consistent wall thicknesses.
• Twin Sheet Thermoforming, which is used to produce hollow parts.
Typically two preheated
thermoplastic sheets are positioned between mold halves. These mold
halves are brought into
position with their respective preheated sheets, sealing their top
edges. A vacuum is then
applied, forming the two individual part halves. Before the
thermoformed sheets cool, the mold
halves are brought together welding the halves into a hollow
construction. Additional air pressure
may be used to complete the twin sheet thermoforming operation.
|1)Customers provide 3D design drawing or sufficient info ( leng x
widht x highx thickness, material, colors etc)|
|2)We offer quotation in time|
|3)Once confirmed price,we arrange to build mold according to
customer's design drawing|
|4)Make samples for customer approved|
|5)Arrange mass production after sample approved by customers|
|6)Timely complete production for on-time delivery|
What is vacuum forming?
vacuum forming process that is after heating the plastic sheet in
the oven,the plastic will become soften.With the female or male
mold(usually it is alumunium mold),to get an airtight space
surrouding and sucking air in the cavity,the plastic sheet will be
prssed in the mold surface to be heated and vacuum formed to the
The advantage of vacuum forming:
1.Customized size and design wide used in all kinds of industrial
both for outdoor and indoor products.Thermoforming products can be
with UV protection,flame restardant,antistatic function.
2.Save shipping cost.The thermoforming products design can be
overlap during transportation.
3.Low cost on molds and price.The mold cost is only 1/10 by
injection and can start with small MOQ.
4.Short production time than injection.
5.Can bear high weight,the thickness of 10mm can bear over 3T
6.The finished molds can be modified,and the measurement can be
Vacuum forming products application fields:
It is widely used in automobile, machinery, medical equipment,
construction, home appliances, printing, furniture, tourism,
catering, toys, advertising, lighting and other industries.Main
products include: mechanical equipment shell, product shell;The
interior of the refrigerator, automobile and furniture accessories,
medical bed board, massage chair, disability chair, dental chair,
beach drag basin, elevator interior decoration;Stage lamp housing,
backcast TV shell, vacuum cleaner shell, sports equipment shell,
solar panel mounting seat, lampshade, air tube mounting plate;Auto
parts, liquid crystal display glass and other supporting trays,
display products series, medical shells, large plastic trays such
as shell products, bearing pallets, etc.