SEALING EQUIPMENT AND METHOD BY VIBRATION

Title:

SEALING EQUIPMENT AND METHOD BY VIBRATION

Document Type and Number:

Japanese Patent JPS52101194

Kind Code:

A

Abstract:

A method and apparatus for forming a seal between layers of thermoplastic coated paperboard or the like wherein there are different numbers of layers and varying thicknesses at different locations within the area to be sealed. The apparatus includes an anvil having a work surface for engaging one outer surface of the layers and a horn that vibrates at a predetermined frequency when energized. The horn has a work surface that opposes the work surface of said anvil. A control circuit is operable for sequentially; (1) pre-triggering said horn, to energize it and cause it to vibrate; (2) moving said anvil and energized horn into the sealing position to clamp the paperboard layers therebetween and maintaining the clamping pressure over the entire area of the layers within predetermined limits, (3) holding the energized horn in the sealing position with respect to the anvil for a predetermined period of time to cause the thermoplastic coating of the paperboard layers between the work surfaces to be activated to flow, (4) deenergizing the horn to terminate the vibration thereof, (5) holding the anvil and deenergized horn in the sealing position with the paperboard layers clamped between the work surfaces thereof for a predetermined period of time to permit the activated thermoplastic coating to set, and (6) retracting the horn and anvil with respect to each other to unclamp the sealed paperboard layers.

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JPS53137796	METHOD OF SEALING PLASTIC VESSELS AND VESSELS USED FOR SAME
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Inventors:

YUUJIN AARU BOSHIYU
EERU DABURIYUU UORUKU JIYUNIA

Application Number:

JP859577A

Publication Date:

August 24, 1977

Filing Date:

January 28, 1977

Export Citation:

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Assignee:

EX CELL O CORP

International Classes:

B65B7/16; B29C53/00; B29C65/00; B29C65/08; B29C65/48; B29C65/78; B65B51/10; B65B51/14; B65B51/22; (IPC1-7): B29C27/08; B65B7/16; B65B51/22

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