Corrugated milk cap - Closure Types

Milk cap corrugated History of

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Milk Bottle Caps Art

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Lactarius volemus (communitymedia.sciencecareers.org)

The crown cap and bottle machines are what really sealed the doom of the Hutchinson; the crown cap is covered later.

  • Since milk has a very limited life span, the paper disk only had to last a week or so and were not designed for durability.

  • Cork when kept moist by the contents of the bottle would also stay plumper and maintain its seal over a long time, which is one of the reasons cork is still used for wine bottles today Riley 1958.

  • This problem was largely solved with Lewis Boyd's 1869 patents for a glass liner which were manufactured for insertion into the zinc cap.

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It is likely that the finish on this linked also originally had a Goldy cap, since Lief noted they were most popular on catsup bottles.

  • Much of this is due to the limitations of early glass-container manufacture in providing an opening that could be sealed hermetically.

  • Externally threaded bottles probably dominated the market by the late 1920s with cork sealed bottles becoming increasing more uncommon after that date with the exception of wine bottles, many liquor bottles, and bottles sealed with the revolutionary crown caps Lief 1965.

  • Click for a close-up picture of the screw thread finish on a jar that has a typical bead sealing surface - the prominent ridge just below the threads.




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