Twist-off caps are used to hermetically close glass jars used to store sterilized food. There is a safety button at top of the cap which creates a characteristic sharp noise when the glass jar is opened. This sound offers a signal to the customer that the food inside is safe. Shin-I offers a whole twist-off capping production line including Press, Curler, and Forming and Lining machines. Moreover, machines for PT caps are also available.

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