ABS Vacuum Form Box Vacuum Forming Advertising Plastic products 3
Vacuum Forming, Custom Vacuum Thermoforming
Wuxi Ocean Tech is a leading provider of custom plastic vacuum
forming services. Productive Plastics can provide product design
and manufacturing engineering assistance in conjunction with vacuum
forming contract manufacturing. Productive Plastics is ISO
9001:2008 registered, with many years of plastics experience and
extensive technical expertise in vacuum thermoforming.
Typical Applications for Vacuum Forming
Vacuum thermoformed parts are used to replace fabricated sheet
metal components with complex shapes requiring excessive welding,
grinding and finishing operations. Custom vacuum formed parts
compete very favorably against FRP (fiber-reinforced plastics) and
RTM (resin transfer molded) parts in moderate (250 – 3000) annual
Wuxi Ocean Tech currently uses vacuum forming to make plastic
components such as:
- Lift truck enclosures
- Enclosures for medical diagnostic equipment
- Railcar interior trim parts and seating components
- Engine covers for construction equipment
- Fascias for outdoor kiosks and ATM applications
|Product||ABS Vacuum Form Box Vacuum Forming Advertising Plastic products 3
|Material||Front: Acrylic, PC, PETG, ABS,etc|
|Side: Stainless Steel,aluminum,steel,etc|
|Application||Chain Shops / Car company / Car showroom|
|Packaging||pearl cotton + bubble pad + wooden cases|
|Shipment||By express( DHL,FedEx,UPS etc.), 3-5days|
|By air, 5-7days|
|By ship: 25-35days|
|Lead time||3-4 days per set|
|Payment Terms||30% deposit and 70% balance before shipping|
Advantages of Vacuum Forming Compared to Thermoforming
Cheaper plastic costs – Cost per parts to the customer is lower.
Cheaper machine costs – Overall machine cost to operate is lower.
Easier production – Because of the lack of detail in the package,
the operation is less complex to execute.
Disadvantages of Vacuum Forming Compared to Thermoforming
Material distribution is difficult to control.
Cannot produce as many parts.
Highly detailed parts are difficult to achieve.
Absorbed moisture can expand, forming bubbles within the plastic.
Webs tend to develop around the mold from overheating.
The defining characteristics between vacuum forming and
thermoforming occur when the differential pressure across the sheet
thickness exceeds 15 lbs./square inch. When thermoforming, this
process is traditionally performed with air pressure up to 150
lbs./square inch on the free side of the sheet and vacuum on the
sheet surface closest to the mold. The air pressure is contained in
a pressure box that clamps the sheet against the mold surface,
resulting in high quality surface textures.
Pressure forming is used in thin-gauge applications to improve
cooling cycle times by rapidly stripping the sheet from the plug
and driving it against the cold mold. This improved cooling time is
a significant process improvement between thermoforming and vacuum
The extruded sheet of plastic is heated and then stretched over or
onto a mold. Vacuum pulls the plastic into the female mold, while a
plug is driven into the plastic accompanied by air pressure to
force the plastic into each area of the female mold. This gives
thermoformed parts much greater detail than parts utilizing the
vacuum forming process.
There are two general thermoforming process categories. Sheet
thickness less than 0.060 inches is usually delivered to the
thermoforming machine from rolls or from a sheet extruder. Thin
gauge roll-fed or inline extruded thermoforming applications are
dominated by rigid or semi-rigid disposable packaging. Sheet gauge
greater than 0.120 inches is typically considered heavy-gauge
thermoforming, and this process is primarily reserved for permanent