IP Library › Granted Patent US 7,748,098
Granted Patent B2
US 7,748,098 · App. 11/323,518 · Granted Jul 6, 2010

Method of testing a seal

Assignee: IntraPac (Swedesboro) Inc.
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Quick Facts
Patent No.
US 7,748,098
App. No.
11/323,518
Granted
Jul 6, 2010
Kind
B2
Abstract

The present invention is for a method of testing a seal on a collapsible tube dispensing orifice during the manufacturing process in an assembly line. Air pressure is applied within the tube wall, at a station in the line, on one side of the seal, and the pressure is monitored on the other side of the seal within a reciprocating cover, for any increase in pressure which would indicate a leak in the seal.

Claims (5)

1. In the manufacture, through successive stations of an assembly line, of an empty open bottomed collapsible tube having a tube wall secured to a head, a dispensing orifice in the head, a seal on the orifice, and a closure cap applied over the orifice; the improvement comprising

a method of testing the seal for leaks at a separate station in the assembly line, after the seal is applied, but before the closure cap is applied, on the orifice, by

(1) temporarily closing the open bottom with a stopper,

(2) maintaining air under pressure inside the tube wall, and

(3) determining whether any air passes through the seal by monitoring the pressure on the opposite side of the seal, within a cover that forms an airtight joint with the head.

Assignments (12)
RELEASE OF SECURITY INTEREST Recorded Jul 31, 2025
From: ARES CAPITAL CORPORATION, AS COLLATERAL AGENT
To: PRECISION CONCEPTS INTERNATIONAL LLC (F/K/A INTRAPAC INTERNATIONAL LLC)
Reel/Frame 071897/0019 →
RELEASE OF SECURITY INTEREST Recorded Jan 18, 2019
From: CANADIAN IMPERIAL BANK OF COMMERCE
To: INTRAPAC INTERNATIONAL CORPORATION (NOW KNOWN AS INTRAPAC INTERNATIONAL LLC)
Reel/Frame 048054/0972 →
SECURITY INTEREST Recorded Jan 11, 2019
From: INTRAPAC INTERNATIONAL LLC
To: ARES CAPITAL CORPORATION
Reel/Frame 047972/0792 →
CHANGE OF NAME Recorded Jan 4, 2019
From: INTRAPAC INTERNATIONAL CORPORATION
To: INTRAPAC INTERNATIONAL LLC
Reel/Frame 048013/0170 →
SECURITY INTEREST Recorded Dec 11, 2017
From: INTRAPAC INTERNATIONAL CORPORATION
To: CANADIAN IMPERIAL BANK OF COMMERCE
Reel/Frame 044348/0735 →
RELEASE OF SECURITY INTEREST Recorded Dec 7, 2017
From: ANTARES CAPITAL LP AS SUCCESSOR AGENT BY ASSIGNMENT FROM GENERAL ELECTRIC CAPITAL CORPORATION
To: INTRAPAC (HARRISONBURG) INC.; INTRAPAC (PLATTSBURGH) INC.; INTRAPAC (SWEDESBORO) INC.
Reel/Frame 044332/0922 →
CORRECTIVE ASSIGNMENT TO CORRECT THE NATURE OF CONVEYANCE TO ASSIGNMENT OF INTELLECTUAL PROPERTY SECURITY AGREEMENT AND CORRECT CONVEYING AND RECEIVING PARTIES PREVIOUSLY RECORDED AT REEL: 036393 FRAME: 0910. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT OF INTELLECTUAL PROPERTY SECURITY AGREEMENT. Recorded Oct 27, 2015
From: GENERAL ELECTRIC CAPITAL CORPORATION, AS RETIRING AGENT
To: ANTARES CAPITAL LP, AS SUCCESSOR AGENT
Reel/Frame 036981/0493 →
SECURITY INTEREST Recorded Aug 21, 2015
From: GENERAL ELECTRIC CAPITAL COMPANY
To: ANTARES CAPITAL LP
Reel/Frame 036393/0910 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 4, 2015
From: INTRAPAC (SWEDESBORO) INC.
To: INTRAPAC INTERNATIONAL CORP.
Reel/Frame 035788/0543 →
SECURITY AGREEMENT Recorded Dec 23, 2011
From: INTRAPAC (SWEDESBORO) INC.
To: GENERAL ELECTRIC CAPITAL CORPORATION
Reel/Frame 027440/0196 →
CORRECTED COVER SHEET TO CORRECT ASSIGNEE NAME, PREVIOUSLY RECORDED AT REEL/FRAME 017439/0273 (ASSIGNMENT OF ASSIGNOR'S INTEREST) Recorded Jul 20, 2007
From: HAYES, JOSEPH P.; SCHARTNER, CARL B.; BRENNAN, WILLIAM D.
To: INTRAPAC (SWEDESBORO) INC
Reel/Frame 019585/0400 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 29, 2005
From: HAYES, JOSEPH P.; SCHARTNER, CARL B.; BRENNAN, WILLIAM D.
To: INTRAPAC, INC.
Reel/Frame 017439/0273 →
Continuity (1)
Related Publication 20070151086A1 · Jul 5, 2007