EPI Co., Ltd.PET BOTTLES & PREFORMS
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Home/The making of a product, in information you can verify.

MANUFACTURING & QUALITY

The making of a product,
in information you can verify.

A look at the site, how products are made, and the points to check when choosing one.

Site video

PET handle bottles moving along the conveyor.

EPI production site

How it is made

Eight steps from resin to shipment.

  1. Feeding

    PET resin is loaded into the hopper and mixed.

  2. Drying

    The resin is dried to remove moisture.

  3. Preform molding

    Molten resin is injected into the preform mold and cooled quickly.

  4. Blow molding

    The preform is reheated to 90–100 °C and blown with air into the bottle shape.

  5. Machine inspection

    Each bottle passes through an inspection machine.

  6. Visual inspection

    Inspectors check for scratches and foreign matter.

  7. Labels and handles

    Labels and handles are attached to the bottles.

  8. Packing

    Bottles are boxed and stacked on pallets for shipment.

On site

Stainless-steel resin hopper
Resin hopper
A row of glowing heaters in the preform reheating section
Preforms being reheated before blowing
Handle bottles on a conveyor beside an inspection unit
Bottles passing the inspection machine
A wrapped stack of bottles on a pallet beside a wrapping machine
Wrapped bottles waiting for shipment

Why PET

  • Light and easy to handle
  • Transparent
  • Impact-resistant
  • Recyclable
  • Easy to produce in many sizes

Quality checks before shipment

What is checked at each step from label inspection to shipment.

Quality checks from label inspection to shipment
Process symbolStepWhat is checkedFrequencyMethodResponsibleIf something is wrong
Label inspectionColour, position and air bubblesEvery lotSensory inspection (sample material, visual)QCDiscard
PackingKeeping out foreign matterEvery lotSensory inspectionProduction100% sorting
Pre-shipment appearance inspectionDamage to packagingBy lotVisual inspectionQCSorting of the affected goods
ShipmentAppearanceBy lotVisual inspectionProductionSorting of the affected goods

WHAT TO VERIFY

Three checks for a better choice.

SPECIFICATION

Product specification

When you inquire, check how capacity is defined, weight and tolerance, and neck-to-closure fit.

APPLICATION

Conditions of use

Review suitability for the contents, filling temperature and pressure, and storage during your inquiry.

DOCUMENTATION

Documents you may need

Please ask which test or supporting documents you need, and for which product and scope.

LET’S TALK PACKAGING

What are you planning to package?

You do not need every specification to start. Begin with your intended use.

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