Montreal Milling Cutter Company

Sun Coast Plastics, Inc.

Montreal Milling Cutter and Company, Inc.

Istvan Foldesi

Herbert V Dutt

Paul A Santostasi

Marcel P Belanger

Ludwik Cudnoch

An in-line sealer apparatus for applying and sealing foils to the mouth of sequentially presented containers. The apparatus includes a rotatable turret having a pocket wheel containing angularly spaced pockets for accommodating containers. Each pocket has a foil transfer and sealing mechanism which is associated therewith and mounted on the turret arrangement for rotation therewith. Each mechanism includes a stacker unit which removably attaches to the turret and stores therein a stack of foils. Each mechanism also includes a foil transfer and applying unit which is disposed below the stacker and includes a movable foil-engaging head for removing the lowermost foil in the stack, and thereafter transferring the foil and applying it to the mouth of the container positioned within the respective pocket. When so positioned, the container moves through a heating channel, while the head presses the foil against the container mouth, to seal the foil to the mouth, following which the head is removed and the container discharged from the turret arrangement.

In-line sealer

A continuous motion in line sealer assembly includes a sealer star wheel which is coordinated with a plurality of rotatable and receiprocable vacuum heads. Each vacuum head obtains a flexible foil sealing disk from a point of supply and positions the disk atop a container. The vacuum head and container then pass through an induction tunnel to activate a heatable adhesive. A pair of stationary cam plates control both the reciprocal motion of the vacuum head as well as providing it with a dwell time which momentarily interrupts its continuous motion to facilitate sealing disk acquisition.

Continuous motion in-line sealer

A two part closure for a container is comprised of a flexible foil sealing disk together with a flanged linerless screw threaded closure cap. During the process of applying the closure to a container, the flexible foil sealing disk in formed, heated, and is tack adhered to the rim of the container. A closure cap having downwardly extending spaced sealing flanges is then screwed onto the container. The cap's sealing flanges contact the flexible foil sealing disk on opposite edges of the container's mouth rim and, as the cap is screwed down, these flanges bring the flexible foil sealing disk into continuous, intimate sealing contact with the container rim. Additionally, the inner closure flange draws the portion of the flexible foil sealing disk situated within the container mouth tight to eliminate creases and wrinkles in the foil sealing disk. Once the closure cap has been applied and tightened down, the two part closure is subjected to a second heating step to fully activate the heat sensitive adhesive carried on the under surface of the flexible foil sealing disk thus securely adhering the flexible foil sealing disk to the container. Once the closure has been opened and the foil sealing disk removed, the container can be resealed by using the flanged linerless closure cap. Several preferred embodiments of flexible foil sealing disk forming and applying assemblies are usable to form the foil disks and to tack adhere them to the mouths of containers.

Apparatus for forming and attaching a flexible foil sealing disk

A two part closure for a container is comprised of a flexible foil sealing disk together with a flanged linerless screw threaded closure cap. During the process of applying the closure to a container, the flexible foil sealing disk is formed, heated, and is tack adhered to the rim of the container. A closure cap having downwardly extending spaced sealing flanges is then screwed onto the container. The cap's sealing flanges contact the flexible foil sealing disk on opposite edges of the container's mouth rim and, as the cap is screwed down, these flanges bring the flexible foil sealing disk into continuous, intimate sealing contact with the container rim. Additionally, the inner closure flange draws the portion of the flexible foil sealing disk situated within the container mouth tight to eliminate creases and wrinkles in the foil sealing disk. Once the closure cap has been applied and tightened down, the two part closure is subjected to a second heating step to fully activate the heat sensitive adhesive carried on the under surface of the flexible foil sealing disk thus securely adhering the flexible foil sealing disk to the container. Once the closure has been opened and the foil sealing disk removed, the container can be released by using the flanged linerless closure cap. Several preferred embodiments of flexible foil sealing disk forming and applying assemblies are usable to form the foil disks and to tack adhere them to the mouths of containers.

Growing community of inventors

Laval, Canada

Istvan Foldesi