US3909326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for applying heat sealable membrane
Assignee: Kraft Inc
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Filing: 1973-02-26
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Granted: 1975-09-30
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Expires: 1993-02-26
Abstract
Abstract Apparatus is provided for induction heating of a heat sealable packaging material so as to apply the heat sealable packaging material to the mouth of a container. The apparatus generally includes a conveyor for moving the container in proximity to an induction heating coil and further includes a continuous belt which is timed to move in sequence with the container conveyor. The continuous belt moves into position over and presses down upon the heat sealable packaging material while it is in contact with the mouth of the container and as the container and the heat sealable packaging material are passed in proximity to an induction heating coil.
Inventors
- 👤 Lawrence E Renck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:10
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B29C65/00; B29C65/02; B29C65/34; B29C65/36; B29C65/3604; B29C65/3644; B29C65/3656; B29C65/3672; B29C65/3676; B29C65/368; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/114; B29C66/20; B29C66/24; B29C66/242; B29C66/2422; B29C66/24221; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5342; B29C66/53421; B29C66/5346; B29C66/53461; B29C66/54; B29C66/541; B29C66/5412; B29C66/542; B29C66/80; B29C66/81; B29C66/816; B29C66/8161; B29C66/83; B29C66/834; B29C66/8341; B29C66/83421; B29C66/83423; B65; B65B; B65B51/00; B65B51/10; B65B51/22; B65B51/227; B29C65/3668
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
A CONTINUOUS METHOD FOR APPLYING AND SEALING A HEAT SEALABLE PACKAGING MATERIAL TO THE MOUTH OF A CONTAINER CONSISTING ESSENTIALLY OF THE STEPS OF CONTINOUSLY TRANSPORTING AN OPEN MOUTH CONTAINER ALONG A CONVEYOR, PLACING A HEAT SEALABLE PACKAGING MATERIAL IN CONTACT WITH SAID MOUTH OF SAID CONTAINER, ENGAGING SAID HEAT SEALABLE PACKAGING MATERIAL WITH A MOVING SURFACE SPACED FROM SAID CONVEYOR, MOVING PARALLEL TO SAID CONVEYOR IN THE SAME DIRECTION AND AT THE SAME SPEED AS SAID CONVEYOR SO AS TO PRESS SAID PACKAGING MATERIAL AGAINST SAID MOUTH OF SAID CONTAINER WITH SUFFICIENT PRESSRE TO SEAL SAID PACKAGING MATERIAL TO SAID MOUTH OF SAID CONTAINER WHEN SAID CONTAINER WITH SAID PACKAGING MATERIAL IN CONTACT WITH SAID MOUTH IS CONTINUOUSLY PASSED IN PROXIMITY TO INDUCTION HEATING MEANS.
Claim 2
Dependent Claim
126 words
A CONTINUOUS METHOD FOR APPLYING AND SEALING A HEAT SEALABLE PACKAGING MATERIAL TO THE MOUTH OF A CONTAINER CONSISTING ESSENTIALLY OF THE STEPS OF CONTINOUSLY TRANSPORTING AN OPEN MOUTH CONTAINER ALONG A CONVEYOR, PLACING A HEAT SEALABLE PACKAGING MATERIAL IN CONTACT WITH SAID MOUTH OF SAID CONTAINER, ENGAGING SAID HEAT SEALABLE PACKAGING MATERIAL WITH A MOVING SURFACE SPACED FROM SAID CONVEYOR, MOVING PARALLEL TO SAID CONVEYOR IN THE SAME DIRECTION AND AT THE SAME SPEED AS SAID CONVEYOR SO AS TO PRESS SAID PACKAGING MATERIAL AGAINST SAID MOUTH OF SAID CONTAINER WITH SUFFICIENT PRESSRE TO SEAL SAID PACKAGING MATERIAL TO SAID MOUTH OF SAID CONTAINER WHEN SAID CONTAINER WITH SAID PACKAGING MATERIAL IN CONTACT WITH SAID MOUTH IS CONTINUOUSLY PASSED IN PROXIMITY TO INDUCTION HEATING MEANS.
Claim 3
Dependent Claim
34 words
A method in accordance with claim 1 wherein said engaging of said heat sealable packaging material is effected by use of a continuous belt which is spaced from and moves parallel to said conveyor.
Claim 4
Dependent Claim
32 words
A method in accordance with claim 2 wherein the spacing between said continuous belt and said conveyor is such as to press said packaging material firmly against said mouth of said container.
Claim 5
Dependent Claim
36 words
A method in accordance with claim 1 wherein said heat sealable packaging material is positioned in place against said mouth of said container prior to engagement by a cap fitting over said mouth of said container.
Claim 6
Dependent Claim
19 words
A method in accordance with claim 4 wherein said cap is at least partially constructed of a metallic material.
Claim 7
Dependent Claim
22 words
A method in accordance with claim 1 wherein said heat sealable packaging material is laminated and has at least one metallic layer.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |