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Flow thru shrink wrappers, or flow through shrink wrappers are designed to wrap products in heat shrinkable plastic film as the product flows through the flow through shrink wrapper in a straight line. Flow through shrink wrappers are designed to create three kinds of heat shrinkable plastic film packages around the product. The first type of plastic film package has a heat-sealed seam in front of the package, a heat-sealed seam in back of the package, and an overlap static seal underneath the package, and is called a lap seal package. The second type of plastic film package has a heat-sealed seam in front of the package, a heat-sealed seam in back of the package, and a heat-sealed seam on the side of the package. This type of heat shrinkable plastic film package has a side seam. Flow through shrink wrappers are designed to seal and cut the film in front and behind the package (and in the case of a side seam package, to the side of the package) using either a hot wire seal and cut-off or a hot knife seal and cut-off. The third type of package that a flow through shrink wrapper can accomplish is called an inverted seal or package. An inverted flow through shrink wrapper creates a package that has a heat-sealed seam in front and behind the package, and a heat-sealed seam longitudinally across the top of the package.
Lap seal flow through shrink wrappers, or overlap seal flow through shrink wrappers, use a single flat roll of film that passes over a form to wrap the film completely around a product as the product passes through the form. The lap seal flow through shrink wrapper overlaps the film below the product. Because this overlap of film is not actually sealed until the package passes through a heat shrink tunnel, the overlap seal is also referred to as a static seal. After the film is overlapped below the product, the lap seal flow through shrink wrapper passes the product through lateral seal jaws that seal the front of the current package, seal the back of the next package, and separate the packages by cutting the film between the two packages.
Side seam flow through shrink wrappers are designed to use center folded heat-shrinkable film to wrap the product. The side seam flow through shrink wrappers pass the center folded film over a forming plow that orients the film below and above the infeed conveyor. The product is transferred onto the film with the folded portion of film above the package. The heat-shrinkable film is then passed through a seaming device that seals the film to the side of the product. The side film sealer also trims excess film beyond the seal. The side seam flow through shrink wrapper then passes the wrapped product through lateral seal jaws that seal the back end of the current package, seal the front end of the next, and cut the film between the seals.
Inverted flow through shrink wrappers also use single flat rolls of film. An inverted flow through shrink wrapper is designed to have the product placed on the film rather than on a belt or lug chain to carry the product through the heat-sealing jaws. The heat shrinkable film is formed up around the product through the use of plows. The excess film above the product is passed through a mechanism that seals the film above the package and trims the excess film. The inverted flow through shrink wrapper then passes the product through lateral film sealing jaws that are designed to form the trailing seal for the current package, form the leading seal for the next package, and cut the film between the seals to separate the packages.
Arpac, Model TS33CF, continuous motion, horizontal flow thru shrink wrapper and tunnel . *Package size range: 4" to 48" in Length; 8" to 26" in Width; 1/8" to 12" in Height. Equipped with 240" long lugged in feed conveyor currently set on 30" centers with 3½" high lugs, 25½" wide x 53" long former conveyor, 19½" wide x 32" long side seal conveyor, 25" wide x 30" long seal conveyor, 33" pre folded side film unwind, perf wheel, scrap removal, side seal and 28" wide hot knife cross seal with 12" vertical travel. A/B controller with touch screen HMI. Arpac, Model MPD163090, two zone shrink tunnel with 16" high x 30" wide aperture, 90" long two zone tunnel, 28" wide x 106" long conveyor and cooling fan.*Package maximums cannot occur together.Rated from 0 to 80 linear feet per minute with number of product – depending on materials, application and machine configuration.OAD: 466"L x 72"W x 80"H
Arpac Model TS37 and XT18, horizontal continuous motion, side seal shrink wrapper and tunnel. Product size range: 3-1/2" to 60" in Length; 2" to 16" in Width; 1/4" to 7-1/2" in Height. Equipped with 72" long lugged in feed conveyor, LDPE walking beam cross seal jaws and next generation side seal assembly. Features Allen Bradley PLC, interlocked guarding, pull out film carriage, no product detection, perf, scrap removal, jog and E-Stop.Film specifications: up to 39" wide single wound film on 3" OD core; up to 14" in diameter.
Shrink tunnel: Aperture: 24" in Width; 14" in Height; tunnel 72" in Length. Equipped with 120" long x 22" wide conveyor, top mounted blower with variable speed and temperature controls. Mounted on height adjustable legs.
Speed dependent on materials, application, machine configuration and operator dexterity.
OAD: 251" L x 63" W x 61" H
Arpac Model HC37, horizontal, continuous motion, servo driven, flow thru shrink wrapper and bottom lap sealer rated from 0 to 90 linear feet and 0 to 80 packages per minute – depending on materials, application and product stability. Product size range: 3-1/2" to per application in Length; up to 16" in Width; up to 7-1/2" horizontal jaws and up to 12" vertical jaws in Height. Equipped with 245" long Lugged servo driven in feed conveyor with 1/2" wide x 1" high lugs set on 16" centers with adjustable guide rails into the flow wrapper forming plow, with 19" long 9-1/2" wide vacuum conveyor pulling film and product to 32" long x 9-1/2" wide neophreme belt conveyor thru the 17" wide interchangeable horizontal or vertical cross seal jaws and overlapping bottom film static lap seal to the discharge. Centerfold film maximum width up to 37" and film roll maximum OD up to 14" and has 38" long servo driven film rolls with perf wheels. Control panel has A/B CPU and A/B panelview controller with seal bar and lap seal temperature controllers, manual / jog, cycle start and on / off with e-start, Mounted on (4) leg base frame with interlock safety door guarding.
OAD: 84" L x 64" W x 78" H Flow Thru Sealer 245" L x 36" W x 36" H In Feed Conveyor
Conflex, Model CW160, continuous motion, flow thru shrink wrapper. Rated from 10 to 100 packages per minute – depending on materials, application and machine configuration. Package size range: 3" to 36" in Length; 2" to 14" in Width; (1/8)" to 5" In Height. Equipped with 192" long lugged feed conveyor set on 10" centers, powered film unwind, pin wheel perforator, forming plow, static lap seal, 16" wide reciprocating hot knife seal jaws with safety guarding, 12" long vacuum transfer belts. Control panel with variable speed dial, push button jog / start / e-stop, digital temperature control for seal bar and forward / off / reverse switch. Film Specs: up to 30" in width, up to 12" in diameter on 3" core.
OAD: 242"L x 47"W x 68"H
Kallfass, Model Universa 700 NT, intermittent motion side seal, flow through, shrink wrapper and tunnel. Size range: 4.75" to unlimited in Length; 1" to 27" in Width; up to 8" in Height. Equipped with a 27 wide x 49" long infeed conveyor, adjustable former, 30" wide hot knife cross seal with 12" of vertical travel, side seal station with scrap collection, interlocking safety guarding and touch screen HMI. Mounted on height adjustable legs. Film specifications: (center Folded) up to 39" in Width; up to 12" in Diameter.
Shrink tunnel: Aperture 9" in Height; 28" in Width; tunnel 43" in Length. Equipped with 52" long x 25" wide live roller conveyor, variable temperature / speed controls. Mounted on height adjustable legs.
Speed dependant on materials, application and machine configuration.
OAD: 90"L x 86"W x 74"H (Sealer)OAD: 55"L x 51"W x 49"H (Tunnel)
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