DETAIL ABOUT PVC EXTRUSION

PVC EXTRUSION

Plastics are extruded in high-range  manufacturing process in which raw plastic is melted and formed into a continuous profile. Extrusion produces items such as pipe/tubing, weatherstripping, fencing, deck railings, window frames, plastic films and sheeting, thermoplastic coatings, and wire insulation.

This process starts by feeding plastic material (pellets, granules, flakes or powders) from a hopper into the barrel of the extruder. The material is gradually melted by the mechanical energy generated by turning screws and by heaters arranged along the barrel. The molten polymer is then forced into a die, which shapes the polymer into a pipe that hardens during cooling

REGID  PVC PIPES

COMPOUNDING

STEP INVOLVES IN COMPOUNDING

RESIN
STABILIZERS
FILLER
PLASTIZIER
PIGMENT
LUBRICANT

All of them are accordingly doses to a mixer,were they are heated at certain temp (75-90approx c).
Then they are cool to the room temperature.
Then after extrusion process take place to get proper dimension for finished products.

Pipes,Profile,article,etc are extruded.

The Extrusion Process

In Extrusion process thermoplastic material are mixed and heated at certain degree,This process is called as compounding.
Then the compounding material is feed to the hopper of extrusion machine where they thermoplastic material are heated  at appropriate temprature and formed to their desire shame according to the dye.

Why PVC???

1. Density: PVC is very dense compared to most plastics (specific gravity around 1.4)
2. Economics: PVC is readily available and cheap.
3. Hardness: Rigid PVC is very hard.
4. Strength: Rigid PVC has extremely good tensile strength
5. Fire Retardation : PVC doesn't catch fire
6. Durability :Last for more time

Uses and Application Of PVC

Uses & Benefits

Vinyl is versatile: it can be as rigid as industrial pipes, as pliable as plastic wrap, and as thin and flexible as wallcovering. It can also be completely clear or matched to any color desired.

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