Cap liner and hydraulic press: what they have in common

1. Step 1. Cap liner — is part of — Crown cap. A seal inside the cap.
2. Step 2. Crown cap — is part of — Glass bottle. A cap.
3. Step 3. Glass bottle — evolved into — Plastic bottle. A replacement for glass.
4. Step 4. Plastic bottle — uses — Injection moulding. Preforms are moulded and then blown.
5. Step 5. Injection moulding — works like — Extrusion. Both methods shape material by pushing it through tooling.
6. Step 6. Extrusion — uses — Hydraulic press. Presses.

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