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PRESENTATION

eewa thermoforming

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PRESENTATION

• Established in 1967

• Export to more than 55 + countries

• Experience of more than 45 years

• Above 250 + Models

• More than 30,000 satisfied customers from all over

India and Overseas

• Primary focus on developing custom-made machinery

to suit all applications and of vast industry.

www.eewaengineering.com

www.eewaengineering.com

• When a thermoplastic sheet is heated it

becomes soft and the techniques for shaping

this sheet are known as thermoforming.

• The term "thermoforming" incorporates a wide

range of possibilities for sheet forming but

basically there are two sub-divisions :

• Vacuum Forming

• Pressure Forming

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• In this processing method a sheet of thermoplastic

material is heated and then shaped by reducing the air

pressure between it and a mould.

• A heater panel is then placed above the sheet and when

sufficient softening has occurred the heater is removed

and the vacuum is applied.

• For the thicker sheets it is essential to have heating from

both sides. A sheet of plastic, which may range in

thickness from 0.025 mm to 4 mm, is clamped over the

open mould.

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This is generally similar to vacuum

forming except that pressure is

applied above the sheet rather

than vacuum below it. This

advantage of this is that higher

pressures can be used to form the

sheet. In recent times this has

become attractive as an

alternative to injection molding for

molding large area articles such as

machine housings.

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• Positive Forming.

In this case a male (positive)

mould is pushed into the

heated sheet before the

vacuum is applied. Fig(2)

• Advantages

This gives a better distribution

of material and deeper shapes

can be formed - depth to width

ratios of 1:1 is possible.

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• This is generally similar to vacuum forming

except that pressure is applied through

pressured hot air and mechanical push down

system which ensures smooth forming. This

advantage of this is that higher pressures can be

used to form the sheet. A typical system is

illustrated in Fig(3) and in recent times this has

become attractive as an alternative to injection

molding for molding large area articles such as

machine housings.

www.eewaengineering.com

www.eewaengineering.com

• PS

• PP

• PE

• PET

• PVC

• HIPS

• ABS

• HDPE

• ACRYLIC

• PC

• ETC…

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• Packaging

• Retail

• Automobile

• Medical

• Signage

• Luggage

• Assembly Lines and More

www.eewaengineering.com

www.eewaengineering.com

www.eewaengineering.com

• PLC Base

• Plug assist System

• Infrared Ceramic Heater

• Controlled Vacuum –Less Energy Consumption

• Production, Quality in synchronous mode

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• Interlocked Function

– High Productivity & Time

Saving because of Less

Breakdown & Safety

• Symmetry maintain because

of PLC interface & Usage of

Pneumatic System

• Plug assist system

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• Mechanical pressure forming

• Can apply for higher thickness sheet.

• Even sheet thickness is maintained through plug

assist system

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• Efficient heating -

energy saver

• Precise temperature

control compare to

refractory heater

• Good radiant efficiency

• Fast heat up

• Less cool-down time

• Watt density up to 40

watt/sq.Inch

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• Vacuum Resource usage depends upon Production cycle

• Vacuum controlling switch controls vacuum in reservoir, thus energy saving

www.eewaengineering.com