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Welcome to Chemical and Industrial Plastics
| Chemical & Industrial Plastics
is a local converter of PTFE (Teflon) in South Africa.
We service the following industries:
PTFE Rod, Tube & Sheeting:
Used extensively in:
- Chemical Handling
- Pumps, valves, laboratory equipment
- Power generation plants
- Platinum industries
- Milk and cereal industries
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| Food, Confectionary, milk &
Cereal:
- PTFE Coating (Fluorocarbon coatings)
- A service to Industry, e.g.
- Toffee making machinery
- Bakery Equipment
- Mixing Vessels
- Heat Sealing Dies
- Dough Moldings & Food Dispensing
Machinery
- Packaging
- Cutting knives
Coatings are F.D.A. (Food & Drug Approved). |
| Machined Parts in PTFE:
- Bellows, ball valve seats
- PTFE piston rings & slide bearings
- Wet parts in contact with chemicals
- PTFE - PFA lined piping & fittings
PTFE glass coated fabric:
- Heat seal packaging
- Funnel coatings
- Plastic tubing extrusions
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History
The story of P.T.F.E began on April 6, 1938
at Du Pont's JACKSON LABORATORY in New Jersey. Dr Roy J. Plunkett
who was working with gases related to FROEN* refrigerants discovered
that one sample had polymerized spontaneously to a white waxy
solid.
Testing showed this solid to be remarkable material
indeed. It was resistant to practically every known chemical of
solvent; its surface was so slippery that almost no substance
would stick to it; moisture did not cause it to swell and it did
not degrade, or become brittle after long-term exposure to sunlight.
It had a melting point of 327oC and, as opposed to conventional
thermoplastics; the resin would not flow above the melting point!
Therefore, processing techniques stemming from power metallurgy
had to be developed.
Borrowing from this technology Du Pont engineers
were able to compress and sinter P.T.F.E resins into blocks that
could be machined into desired shapes. Later came dispersions
of the resin in water to coat. Glass cloth and make enamels. A
power was developed that could be blended with a lubricant and
extruded to the desired shape to coat wire and manufacture tubing.
World War II provided impetus to this development,
and by 1948, 10 years after the discovers of P.T.F.E Du Pont was
teaching processing technology to it's customers. Soon a commercial
plant was on stream, and P.T.F.E resins became available in dispersions,
granular resins and fine powder.
Chemical and Industrial Plastics
CIP is a leading manufacturer of PTFE products
in South Africa, products such as PTFE/PFA Lined pipe and fittings,
HALAR / ETFE & PTFE non-stick coatings,
PTFE Bellows, gaskets & seals, PTFE / PEEK sheet, rod, tube
and glass cloth,
PTFE ball valve kits, EPDM / VITON envelope
gaskets, PFA machined parts, Polypropylene, UHDPE Polyethylene
& PTFE Laboratory equipment.
P.T.F.E Fluorocarbon Resins in Chemical Service:
1. Chemical Inertness: P.T.F.E
can be in continuous contact with another substance with no detatable
chemical reaction taking place.
2. Absorption: Absorptivities in P.T.F.E are
unusually low. However, when absorption is combined with other
effects this property can influence the serviceability of these
resins is a particular chemical environment.
3. Non-Stick: P.T.F.E has non-stick properties
and nothing would adhere to it.
4. Chemical Service: Resist the most aggressive
organic and inorganic chemicals and solvents, over a wide temperature
range.
5. Cold: Remain tough, stable and completely
functional down to cryogenic temperatures. Their impact resistance
at these temperatures is better than that of most polymers.
Processing of P.T.F.E
Unlike thermoplastics the viscosity of the gel
above the melting point is too high for P.T.F.E to be processed
by traditional methods [injection or transfer moulding, rotational
moulding...]
The process includes three systematic steps:
- the compression of polymers at ambient temperature
- sintering
- slow cooling down
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