Jantrayan

From resin to finished product: the machines a plastics plant needs

A step-by-step guide to moulding, extrusion and recycling, the machine that does each job, and how to ask Jantrayan for a quotation.

Plastics & rubber machines

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  • Step 1: Material handling and drying

    Hopper dryer

    A heated hopper on top of the moulding machine that dries plastic granules before they melt, so parts come out without bubbles or streaks.

    Availability subject to feasibility check

    Request this machine
  • Step 1: Material handling and drying

    Colour mixer

    A drum or blade mixer that blends granules with colour masterbatch and regrind into an even mix.

    Availability subject to feasibility check

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  • Step 2: Injection moulding

    Injection moulding machine

    Melts granules in a heated barrel and injects them under pressure into a closed mould, which opens to release each finished part.

    Availability subject to feasibility check

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  • Step 2: Injection moulding

    Mould temperature controller

    Pumps heated or cooled water or oil through the mould to hold it at the right temperature, so every part sets the same way.

    Availability subject to feasibility check

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  • Step 3: Blow moulding

    Blow moulding machine

    Inflates a hot tube of plastic inside a mould with compressed air to make bottles, jerrycans and other hollow items.

    Availability subject to feasibility check

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  • Step 4: Extrusion

    Pipe extrusion line

    An extruder pushes melted plastic through a round die; the pipe is sized, cooled in water baths, hauled off and cut to length.

    Availability subject to feasibility check

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  • Step 4: Extrusion

    Blown film line

    Blows melted plastic from a ring die into a tall bubble of thin film, which is cooled, flattened and wound into rolls for bags and wraps.

    Availability subject to feasibility check

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  • Step 5: Cooling and finishing

    Water chiller

    A refrigeration unit that cools the water for moulds and extrusion baths, so parts set quickly and evenly.

    Availability subject to feasibility check

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  • Step 5: Cooling and finishing

    Cutting and trimming machine

    Cuts off runners, flash and excess film from moulded or extruded products, and cuts pipe and profiles to length.

    Availability subject to feasibility check

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  • Step 6: Recycling scrap

    Plastic shredder

    Rotating knives cut plastic waste, rejects and scrap into small flakes for washing and recycling.

    Availability subject to feasibility check

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  • Step 6: Recycling scrap

    Pelletising line

    Melts clean flakes, filters the melt and cuts the strands into even pellets that can be moulded again.

    Availability subject to feasibility check

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How a plastics plant works

The main ways plastic is shaped and the type of machine that usually does each job. Most plants specialise in one or two of these.

  1. Material handling and drying

    Resin pellets are dried and mixed with colour or additives before they are melted.

    Machines at this step: Hopper dryer, Colour mixer

  2. Injection moulding

    Molten plastic is injected into a closed mould to make parts such as caps, crates, chairs and housings.

    Machines at this step: Injection moulding machine, Mould temperature controller

  3. Blow moulding

    A soft tube or preform is blown with air inside a mould to make bottles and containers.

    Machines at this step: Blow moulding machine

  4. Extrusion

    Plastic is pushed through a die in one long run to make pipes, sheet or film for bags.

    Machines at this step: Pipe extrusion line, Blown film line

  5. Cooling and finishing

    Parts and moulds are cooled with chilled water, then trimmed, printed or cut to length.

    Machines at this step: Water chiller, Cutting and trimming machine

  6. Recycling scrap

    Rejects and plastic waste are washed, shredded and turned back into pellets that can be used again.

    Machines at this step: Plastic shredder, Pelletising line

Filling the bottles you make?

See the machines that fill, seal, label and box products on a packing line.

Packaging machines