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BaggingGuys.com Packaging Equipment Glossary

Following are definitions for common packaging terms and specific descriptions of equipment types and equipment options offered by the Bagging Guys!  Click links throughout the Glossary to see photos and related equipment.  [Return to our Home Page]

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A - B - C - D - E - F - G - H -  I  - J - K - L - M -

N - O - P - Q - R - S - T - U - V - W - X - Y - Z

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A Valve Bag packer that uses air pressure to fluidize bulk material and blow it into the bag through a fill spout.  Most air packers have a bag spout and a bag support saddle that are suspended from a LOAD CELL.  As material is fed into the bag, the load cell feeds back bag weight to the machine's controller and regulates flow of material into the bag.  Air packers are typically used for fast, efficient filling of dense, fine powders like cement, sand, bakery mixes, charcoal powder, carbon black, laser toner powder AND pelleted products like color concentrates, plastic resins, filtration media, etc.  For slower-speed non-abrasive powders, we may recommend an AUGER PACKER.

A VALVE BAG packer, like the THIELE S-11 AUGER PACKER, that uses an auger to "screw-fee" bulk material into the bag through a fill spout.  Most auger packers have a bag spout and a bag support saddle that are suspended from a LOAD CELL.   As material is fed into the bag, the load cell feeds back bag weight to the machine's controller and regulates flow of material into the bag.  Auger packers are typically used for accurate filling of nonabrasive, fine powders like bakery mixes, flour, powdered sugar, dried milk products, laser toner powder, etc.  Auger packers are not recommended for granular or pelleted materials.  We suggest use of an AIR PACKER for VALVE BAG applications with those [large particle size] characteristics.

Machinery that can perform its functions without operator intervention in the process being performed.  In Full-Automatic applications, operator involvement is usually limited to replenishment of packaging components.  e.g. loading empty bags or cartons on the FILLING SYSTEMS's magazine, loading bulk material supply hoppers, placing empty pallets on the PALLETIZER magazine, removing completed cartons or pallets from the system, etc.  SEMI-AUTOMATIC applications require more operator involvement in the process.

Term applicable to any one of several available systems for open-mouth and valve bag packaging where bags are automatically applied to filler spout, filled, weighed, closed (if open), palletized, and shrink wrapped.

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Term applied to flexible container made from paper or other flexible material.  The container is made by forming a tube from the flexible material.  One or both ends are then closed, leaving an opening through which the material to be carried in the container is introduced.

The mechanism that clamps the bag to a discharge chute during the filling of the bag.

Holder for empty shipping sack being staged for placement and filling.

Amount of empty bag top above product after filling, measured in inches. Sometimes referred to as "Headspace" or "Freeboard".

The configuration (layout) of bags in one tier of a pallet stack.

The length of a bag divided by its width.

The end of the bag through which the material is normally introduced. The end to be referred to as the top may be predicated on the orientation of the printing.

A common term used to specify desired or actual equipment speed.  The number of units (be they bags, cartons, boxes, scale weighments, etc) that a machine is capable of delivering within a 60-second period.  CAUTION: While it is a common and seemingly simple term, "Per Minute" rates are extremely dependent on factors such as container/bag consistency and quality, bulk material uniformity, bag size, bag thickess, operator skill and training, weighment/fill size, proper machine selection and set-up, even environmental conditions such as ambient temperature, humidity!  Even though a machine can cycle at X BPM, be aware that attainment of maximum machine rates can be difficult if all the factors above are not propoerly considered.

A HEAT SEALER that is small enough for use on a table or bench top.  Bench-top sealers are most often used for HOSPITAL, LABORATORY, or MILITARY (MIL-SPEC) packaging and sealing applications.  Bench-top sealers can be INTERMITTENT, JAW-type sealers, or CONTINUOUS MOTION sealers like the EMPLEX MPS-Lite or Miniro-H.

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A conveyor that uses interconnected, articulated buckets to move bulk materials in horizontal and vertical directions.  Bucket elevators are able to carry products in almost every direction without risk of product damage.  Because the buckets are able to swivel, a bucket elevator can be used to raise product vertically without requiring a large conveyor FOOTPRINT.   Additionally, some bucket elevators can be designed to discharge product at multiple locations.

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A mechanical device that applies packaging tape to a carton to seal the carton closed.  See Case Taper options by clicking this link!

A mechanical device that supports an empty corrugated carton for manual or automatic packing / loading.  See Case Packing / Loading Stations by clicking this link!

Optional wheels available for most sealers and conveyors.  Make machinery easily portable for line/product changeover and cleanup.

A thin, transparent sheet made of regenerated cellulose. Its low cost and low permeability to air, oils, greases and bacteria makes it useful for food packaging. Cellulose generally has better barrier properties (resistance to moisture and oxygen permeation) than polyEYTHylene (an inexpensive material of which many bags are made) and is commonly used for packing snack food products - e.g. trail mix, chocolates, nuts, cookies, crackers, snack foods. As an alternative to Cellophane, many of our customers also use Polypropylene bags which have similar characteristics to Cellophane. Because it seals differently than polyethylene, you must choose your heat sealer carefully if you plan to seal Cellophane.

If even more barrier protection is required for your product, you should consider a Laminated film structure for your bag.

A belt conveyor that has cleats mounted to the belt.  The cleats for compartments along the length of the belt.  Cleats can be added to INCLINE BELT CONVEYORS to transport products up steep inclines.  Cleated Belts can also by used in a horizontal orientation to separate and/or collect groups of products - see our INFEED CONVEYOR.

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Parts on a machine that wear out during normal operation and need to be replaced on a periodic basis.  Examples include SEALING BANDS for BAND SEALERS, Teflon® Tape on JAW SEALERS, Ink and Ink Rolls for INK CODERS,   Machine users should plan for periodic replacement of Consumable Parts and keep some in spare parts inventory, especially during periods of heavy machine use!

A continuous motion sealer designed to seal "unsupported" films like polyethylene.  A band sealer uses two continuous loops of Teflon®-coated steel or fiberglass to isolate the bag material from the heat bars.  The bag is in motion throughout the sealing process, allowing for faster, more efficient sealing than with intermittent "jaw" type sealers.  A Continuous Band Sealer is recommended for fairly clean, non-gritty applications using GUSSET BAGS or for consumer product applications where a high-integrity, uniform seal appearance is critical.

When a heat seal is created, three factors contribute to the quality of the seal; TEMPERATURE, PRESSURE, and DWELL TIME (a.k.a. SPEEDfor CONTINUOUS motion sealers).   For critical applications like MIL-SPEC PACKAGING, medical component, and pharmaceutical packaging, VALIDATION of the sealing process requires that Critical Sealing Parameters be precisely controlled and monitored.

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Information gained from a control device which advises of a fault or condition.

A weighing system in which the weigh bucket is directly mounted to the load cell without the use of flex links.

The height, from floor level, to the Top Of the Belt [ TOB] on a conveyor's discharge end.  Except in INCLINE CONVEYOR applications, the discharge height of a conveyor is usually equal to the INFEED HEIGHT.

Controlled measurement of product flow into scale.  Normally a second fill stage (also called "top off or trickle feeding.)

The time during which a bag being sealed is exposed to heat and pressure [See Critical Sealing Parameters].  With the exception of our VALIDATABLE MEDICAL JAW SEALERS, dwell time on an  INTERMITTENTJAW SEALER, is typically the total time that the jaw is closed.  On continuous motion sealers, the Dwell Time is the amount of time that the bag is exposed to the heating and compression sections of the sealer - usually measured by the linear speed of the machine.

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For most of our equipment, specified in terms of Voltage (Alternating or Direct Current) / Frequency (usually 60 Hertz, 50 Hz, if required) / Phase (Single or Three Phase) / Current (in Amperes).  If you have unique voltage requirements, we can offer customer electrical options for most machinery!

A coding mechanism that imparts a lot or date code on the bag by pressing metal characters into the bag material.  Unlike an INK CODER, the embosser does NOT use ink, but simply deforms the bag material, leaving the desired code embossed in the material surface.

Device used to dispense and index empty pallets to a palletizer.

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Shipping terminology.  Means "Free Carrier All".  Most of our equipment is shipped FCA Supplier's Dock - simply put, this means you, as the buyer, own and are responsible for the equipment from the moment it leaves the manufacture's shipping dock.  It is essential you inspect your shipment and note any damage on the shipping paperwork prior to signing for it.  Noting damage will entitle you to file a claim against the carrier for any damage caused in transit.

The means by which the product is fed to the weigh bucket.

Cushioning medium used between the needle thread and the bag to fill the holes made by the sewing needle and prevent sifting. Cotton yarn, flat or twisted paper tape is used for this purpose.

Plastic "stretch" wrap used by a stretch wrapper to wrap a load.

Gauge is a thickness measurement used for some packaging films and bags. Gauge is most often used to describe the thickness of barrier films used to make laminate bag structures and is usually expressed in units of 0.0001 inches. A 48-gauge (48 Ga or 48 ga) film is 0.00048 inches thick - [An example of a laminate film structure is: 48-gauge MET PET / 0.002" LDPE - this refers to a Metallized Polyester Laminate made up of a 48-gauge (0.00048" thick ) layer of Metallized Polyester (MET PET) bonded with a two thousandth inch thick layer of polyethylene on the inside (to make it easy to heat seal) In this example, the total thickness of the laminate structure is 0.00048" + 0.002" = 0.00248" (aka 2.48 mil] Non-laminate, bag film thicknesses (e.g. polyethylene or polypropylene are usually specified more simply as a "mil" thickness - e.g. 2-mil LDPE is 0.002" low-density, polyethylene.)

Linkage points that mount the weigh bucket to the weighing mechanism.  During the fill cycle these flex and after dumping, they return: to their pre-flex position.

The movement of product from one position to another.

Shipping terminology.  Means "Free On Board".  Most of our equipment is shipped FOB Supplier's Dock - simply put, this means you, as the buyer, own and are responsible for the equipment from the moment it leaves the manufacture's shipping dock.  It is essential you inspect your shipment and note any damage on the shipping paperwork prior to signing for it.  Noting damage will entitle you to file a claim against the carrier for any damage caused in transit.

The total width and length (i.e. floorspace) a piece of equipment will occupy on your production floor.

A machine that takes a flat or V-FOLD ROLL of material and forms it into a bag, fills then seals bag closed. FFS equipment is typically FULLY-AUTOMATIC and used for applications requiring rates of 20+ BAGS PER MINUTE.  [See also HORIZONTAL FORM, FILL, & SEAL and VERTICAL FORM, FILL, & SEAL]

Amount of empty bag top above product after filling, measured in inches. Sometimes referred to as "Bag Over Product" or "Headspace".

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Gross Weight is the total weight of a bag, including the weight of the empty bag [the Tare Weight], plus the weight of the product inside the bag [the Net Weight].

A Gross Weight Bagging Scale or filling system is one that weighs the material directly into its final container.  For instance, when you are using a "gross weigh" bagger or scale, an operator places an empty bag onto the filling spout of the machine.  The scale compensates for the weight of the bag [the Tare Weight] and fills material directly into the bag.  When the correct Net Weight is reached, the scale stops filling and the filled bag is removed from the spout.  A Gross Weight Scale is the opposite of a Net Weight Scale.

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A gusset roller, also called a Compression Roller, immediately follows the heating section on some continuous band heat sealers. Its purpose is to place strong, point-on-point contact on the seal area to insure that no pinhole leaks occur in the seal area - especially in where the four layers of a side gusset meet the two layers of film in the center of the bag. Gusset Rollers also help to insure no leaks in the event that the seal area contains a wrinkle or fold (i.e. where multiple layers meet two layers.) Unlike heat sealing machinery from most manufacturers, Gusset Rollers are standard features on all of our stand-mounted Doboy Continuous Band Sealers.

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Amount of empty bag top above product after filling, measured in inches. Sometimes referred to as "Bag Over Product" or "Freeboard".

A resistance wire, ribbon, or cartridge device that generates heat when connected to electricity.

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A continuous motion bag sealer that uses heated air to heat the bag for sealing.  Because they have fewer moving parts that Continuous Band Sealers and no wear parts, Hot Air Sealers are ideal for bagging environments that are dirty or dusty (mulch, stone, soil, salt, etc).  Hot air sealers will work for Tube or Pillow style bags.  Use of a Hot Air Sealer is NOT recommended for bags that are very thin (1.5 mil or less) or for bags that have side gussets!  Click Here to see more details about Hot Air Bag Sealers.

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A flat BELT CONVEYOR that carries products or containers from one level to another.  An incline conveyor is essentially a moving ramp.  When specifying your requirements for an incline conveyor, it is important to know the INFEED HEIGHT and DISCHARGE HEIGHT.

Infeed Height: The height, from floor level, to the Top Of the Belt [ TOB ] on a conveyor's infeed end.  Except in INCLINE CONVEYOR applications, the infeed height of a conveyor is usually equal to the DISCHARGE HEIGHT.

A coding mechanism that imparts a lot or date code on the bag by pressing ink-coated metal characters against bag material.  Unlike an EMBOSS CODER, the ink coder uses either a wet or TOUCH-DRY® ink to create a clearly visible (usually black) imprint of the desired code on the material surface.

Used with MARKEM TOUCH-DRY® INK CODERS, a solid black substance provided on a small roller.  When the roller contacts a heated metal printing character, ink becomes liquid and is transfered to the printing wheel.  Markem TOUCH-DRY® ink is convenient because it is not messy, is easy to store, and creates an instantly dry, extremely legible lot or date code!

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A Jaw Sealer is a heat sealer which uses a pair of jaws to "clamp" the material to be be sealed while heat and pressure are applied. Jaw Sealers are offered in both Impulse Sealer and Constant Heat Sealer configurations. A jaw sealer generally offers a very uniform seal in a precise location. However, because the bag (or film) must remain in one position while it is being sealed, Jaw Sealers are a relatively slow and inefficient means of making a heat seal. Most BaggingGuys customers use Continuous Motion Heat Sealers (e.g. Continuous Band Sealers or Rotary Heat Sealers) to optimize efficiency while still obtaining an effective bag seal.

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A laminated film stucture can be any of a number of high-barrier, high-strength films that are manufactured by bonding (or laminating) different materials together to create an easily-sealed, high-barrier package.

Typical laminate structures used for packaging include Polyester (PET), Metalized Polyester (MET/PET), Nylon, Oriented Polypropylene, Tyvek, Mylar, Kraft/Paper, Paper/Foil, etc., all of which have an inside layer made of polyethylene for sealability.

While Laminate bags tend to be more expensive than Polyethylene, Cellophane, or Polypropylene bags, laminate film structures are usually very easy to seal and a wide variety of bag and pouch designs are available made from laminate films. BaggingGuys offers a variety of sealing machinery for sealing laminate bags and film.

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An electronic device for precisely measuring the weight (mass) of an object.  Digital, electronic scales like the THIELE 6128 & 6112 Gross Weigh, THIELE THRIFTWEIGH & MASTERWEIGH Net Weigh, and TRIDYNE SMALL NET WEIGHT scales use load cells to tell the SCALE CONTROLLER the mass of the object (bag, weigh bucket, etc.)  A less-costly and far less-accurate method of weighment is the MECHANICAL COUNTER-BALANCE.

The height of a stack of layers plus the pallet.  This is also referred to as the pass height.

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Packaging process wherein product and packaging materials are manually handled by people instead of machinery.  Generally, manual packaging operations are slower, less accurate, and less efficient than automatic packaging systems.  Cost and level of automation are directly proportional - i.e. as a system becomes more automated, it generally requires a larger capital investment.  However, as automation increases, so too does speed; accuracy improves, and cost per package decreases.

A patented INK CODING mechanism/technique created by the Markem Corporation.  Touch-Dry® ink is solid until heated.  A hot type wheel is used to pick-up ink from a dry spool, then the wheel is rotated past the bag, leaving a near-instantly dry, black, printed code.  Touch-Dry® ink is great for consumer applications where a clear, unsmeared lot or date code is absolutely essential.

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Trade name for a specialized type of nitrocarburizing case hardening that increases corrosion resistance. Melonite is used to make the durable, black, corrosion-resistant finish on our standard support stands for the Doboy B-450, Doboy B-500, Doboy B-500M, and Bosch Doboy B-550 & B-550M band sealers.

See QPQ Melonite for additional details

Small, solid-state device used to process incoming electronic information and convert this into response output and information.

Measurement of thickness. 1 mil equals .001 inch (one thousandth of an inch)

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(Multiwall Bag) A flexible container made from three to six plies of kraft paper, meeting designated specifications. The walls or plies may be made up of 40, 50, 60 or 70 pound paper. One, or more, may be a moisture barrier sheet. The particular construction of the sack is predicated on the material and the type of transportation to be employed.

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Process by which a product is pre-weighed prior to placement in a shipping container.

A Net Weigh Scale is a filling machine that pre-weighs material (i.e. preweighs the desired Net Weight) then dumps the weighed material into a container.  Examples of Net Weigh Scales include our Tridyne F-99, F-100, F-109, and 1650 Scale for small weighments (0.1 to 50 pounds, net weight) and our Bemis/Thiele Thrift and MasterWeigh Scales for larger bagging applications (20-110 pounds, net weight).

Net Weight is the actual weight of the product in a container.  When you are filling a bag, box, carton, jar, or any other container there are three weights involved - the Gross Weight, the Net Weight, and the Tare Weight.  [Gross Weight = Net Weight + Tare Weight].

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An open mouth bag is one where a tube is closed at one end leaving the opposite end open for filling.

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A flat, raised base or platform on which units are placed for shipment. Unfilled or filled bags are unitized in this manner to facilitate handling and shipping. A means of collecting smaller units together, placing them on a platform, locking in place by an adhesive or strapping so a larger load can be handled at one time.

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Watch Here for definition or Call The BaggingGuys today!

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A multi-wall paper bag, either gusset or tube style, that has a flap on the open end.  Also called a PBOM bag.  The flap is manufactured with a pre-applied hot melt adhesive.  During the bag sealing process the hot glue is reactivated and the flap is folded closed to create a secure, tight seal.  PBOM bags are typically used for products that require a durable bag with a high-integrity seal.  PBOM bags can also be manufactured with sealable inner-liners (usually polyethylene) that can offer an extra layer of seal integrity.  PBOM bags must be closed with PBOM Bag Closers.

Pinch-Bottom, Open-Mouth Bag [See PINCH BOTTOM BAG]

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PolyETHYLene is a very common, soft, plastic film - more specifically called Low-Density Polyethylene (LDPE).

LDPE bags are very easily heat sealed, are relatively inexpensive, and are most commonly used for products with a low profit margin and / or a short shelf life. Examples of products most often found in Polyethylene bags include: Bread, Tortillas, Clothing, Hardware, Mulch & Landscape Materials.  Sealing polyethylene requires the use of a Continuous Band Sealer with Teflon Sealing Bands or a Jaw Sealer with Teflon Covers on the jaw. If a sealer without Teflon covers is used, the polyethylene will melt and burn fast to the heat source - e.g. like a bread bag on a hot toaster.

Polyethylene has relatively poor barrier properties (i.e. it allows moisture and gases to pass through it fairly easily) and does NOT protect products from oxygen or water vapor very well over extended periods of time. If barrier protection is required for your product, you should consider a PolyPROpylene or Laminated film structure for your bag.

A thermoplastic polymer used for the manufacture of many materials including bags. PolyPROPylene generally has better barrier properties (resistance to moisture and oxygen permeation) than polyEYTHylene (a less expensive material of which many bags are made) and is commonly used for packing snack food products - e.g. trail mix, chocolates, nuts, cookies, crackers, snack foods. Polypropylene bags are typically used as replacements by manufacturers who previously used Cellophane bags. Because it seals differently than polyethylene, you must choose your heat sealer carefully if you plan to seal polypropylene.

If even more barrier protection is required for your product, you should consider a Laminated film structure for your bag.

Pressure is the amount of force that is placed on the bag's seal area as the bag is being heated and sealed.  The three critical elements involved in creating a good bag seal are Pressure, Temperature, and Dwell Time (or Speed, in the case of continuous heat sealers.)  On heat sealing machinery, pressure is typically created with the use of spring-loaded mechanisms or pneumatic (air) cylinders.

Option available for most Emplex sealers.  Similar to a GUSSET ROLLER.  Replaces front cooling bar to minimize wrinkling of the seal.  Required for GUSSET BAG sealing applications where the sealer must transition from 4-2-4 layers of bag material.

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Used on our Doboy B-450, Doboy B-500, Doboy B-500M, and Bosch Doboy B-550 & B-550M band sealer support stands; Quench Polish Quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is also known by brand names such as Tufftride, Tenifer, and Melonite.

Three steps are involved: 1) nitrocarburize ("Quench"), 2) Polish, and 3) post-oxidize ("Quench"). QPQ treatment of steel starts with immersion in a standard salt bath - a nitrocarburizing cycle to produce a layer of iron nitride. Next, the work-piece is mechanically polished. Finally, the work-piece is re-immersed into the salt quench bath for 20 to 30 minutes, rinsed, and oil dipped. The final step optimizes corrosion resistance by creating a layer of iron oxide about 3 to 4 micrometers thick.

QPQ treatment gives the work-piece a black finish.

A "Quick Disconnect" is an electrical or pneumatic fitting allows a connection to be made or broken very easily and quickly. High-quality sealers, like the Doboy CBS-D Continuous Band Sealer have quick-disconnect electrical fittings on the motor and heat element leads to allow the components to be changed quickly in the rare event of a failure. Being able to change components like this quickly means less potential for production downtime!

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In bag packaging, a mechanism that allows a bag or pouch to be opened and reclosed / resealed by the consumer.  The most common resealable bag closure is the zipper closure, similar to those found on Ziploc® bags.  Resealable zipper closures are becoming extremely common on STAND-UP POUCHES for consumer products like coffee, snack foods, bird seed, pet foods, etc.  Other resealable closures include containers like jars and bottles that have snap tops or screw caps.

A Roll Bagger (also commonly referred to as an "Autobagger") is a machine that uses pre-made bags on a roll to make a poly bagging operation very efficient. The Pre-made Roll Bags are typically loaded onto the back of the bagger and fed through the machine. The Rollbagger automatically (in most cases) feeds the bags out the front of the machine and automatically blows them open so that an operator or an automatic feeder, counter, or filler can load the product(s) into the bag. The Rollbagger usually is also able to automatically seal the bag top closed with a heat seal and tear the filled/sealed bag free from the roll.

Also known as Pre-made Bags on a Roll or autobags, Roll Bags are typically made of LLDPE (Low Density Polyethylene) and are available in a variety of Stock Sizes and Custom Sizes with or without Color Printing. Roll bags are supplied on a roll. They are made to a specific size (width, length, and mil thickness) and left attached to one another with perforations. The top, front side of each bag is zinged open during the manufacturing process. When installed on a Roll Bagger Rollbags can be automatically fed and opened with a blast of air. The use of Roll Bags and a Roll Bagger eliminates the need for an operator having to pick-up a pre-made, pre-cut bag, find the open end, and manually open the bag for loading - i.e. a much faster, more efficient bag loading and sealing operation!

A Rotary Heat Sealer is a continuous motion sealer designed for sealing "supported" packaging films and materials.  In a rotary style sealer, the material to be sealed moves through the sealer, gripped by either carrier belts or carrier chains.  While inside the sealer, the the film passes between a pair of heated bars that transfer heat to the packaging material.  After being heated, the material passes between a pair of rotating rollers that squeeze the heated material together to create a seal.  Because the bag material comes into direct contact with hot metal bars, rotary sealers are NOT acceptable for use with "soft" films like polyethylene (soft films must be sealed on a Continuous Band Sealer).   Typical rotary style sealers include the Doboy HS-B, HS-BII, AT, and Hospital Sealer.

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An SD or Slider Bed Conveyor is a belt style conveyor on which a drive pulley, usually at the discharge end of the conveyor, pulls a flay belt along a steel "slider" bed. A non-drive, idler pulley at the infeed of the conveyor usually has adjustment which allow the belt to be tensioned and tracked - side to side - as it slides along the bed of the conveyor.

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A measurement of standard deviation, in this case, predicting the variance for filled weights of bags.

A separately applied piece of paper in the valve opening to prevent sifting.

Many of the new machines we offer can be ordered with a Spare Parts Kit. In most cases, a Spare Parts Kit will include parts that naturally wear as the machine is used or parts that are so critical to operation of the machine that most owners want to have a spare component on the sheld for immediate replacement in the unlikely case of failure.

See Dwell Time - Speed is the measurement of Dwell Time for continuous motion sealers like Continuous Band Sealers and Rotary Sealers.

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An electronic sensing device which measures deflection of current to allow accurate measurement of weight.

A machine that wraps a plastic film around a palletized load.

Supported materials include "non-meltable", but heat sealable, films like Cellophane, Polycel, Glassine, Laminates, "Overcap" or Header Labels, Poly-Tyvek medical laminates, Polypropylene, Kraft Paper laminates, Foil laminates, and Mil-Spec materials.  Supported films can be sealed with sealers that have direct-contact heat bars like our "Thermo" Jaw Sealers, Military "Mil-Spec " Sealers, and Medical Sealers.  With a few exceptions, Supported films can usually be sealed on almost any sealer, unlike Unsupported Materials.

The minimum number of bags a palletizer can run in one hour with out shutting down the bag filling equipment. This is used by Bemis when referring to a bag rate.

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Tape applied after the bag has been sewn closed to cover the stitch line at the ends of sewn bags. (Cold adhesive, hot melt, heat sealed thermoplastic coated tape.)

Tare Weight is the weight of the container that is used to weigh or hold product.  When you are filling a container (bag, box, jar, etc) it is important to have a scale that compensates for the Tare Weight of the container to insure that when filling is complete, the desired Net Weight is achieved.  [Gross Weight = Net Weight + Tare Weight].

Final weight the customer requires in their container (bag).  Usually the "Net" weight.

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Final weight the customer requires in their container (bag).  Usually the "Net" weight.

Watch Here for definition or Call The BaggingGuys today!

Watch Here for definition or Call The BaggingGuys today!

Cotton, rayon, or synthetic fiber twisted into thread used for closures.

In a heat sealer, the amount of space inside the sealer, above the seal, through which the bag top can pass during the sealing operation.  The throat depth is the amount of bag top (measured from the top of the seal) that can safely pass through the machinery.   This is generally a critical dimension for bags that have handles, headers, or hang-holes.

In conveyor specifications, the measured distance from the floor to the top of the belt (i.e. the bottom of you package or product).

A cutting device that trims off excess material either before or after the bag has been sealed.  We recommend trimmers like the Doboy DRD Trimmer that trim the bag top BEFORE the bag enters the sealer.  Removing excess bag top prior to sealing reduces the risk of bag jams after the bag enters the sealing section.

A special cut piece of paper pasted to the valve extension in a sewn valve bag through the valve opening. After filling, the sleeve or paper extension is folded and tucked into the valve opening to prevent sifting. Same applied on pasted valve bag.

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Unsupported materials include "meltable", heat sealable, films like polyethylene.  When sealing unsupported materials, special non-stick Teflon® sealing bands or Teflon®-coated heat bars are required to prevent the bag from melting and sticking to the heat bar.  See also Supported Materials.

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A vacuum conveyor is a bulk product conveying methods that uses vacuum pressure to "suck" materials from one place to another.  A vacuum conveyor works much like a household vacuum but is heavier duty and is designed to discharge the material after it moves it into the vacuum chamber.  See our line of Pneumatic and Vacuum Conveying Systems for examples of this equipment.  Our customers frequently use economical Vacuum Conveyors to move roasted coffee beans from the roaster, up and into the inlet of a Net Weigh Bag Filling Scale!

Companies that package medical components, medical hardware, pharmaceuticals, or nutriceutical products often need to "Validate" the seal.  The definition of validation varies from company to company, but generally, it is the testing and verification of a heat sealer's ability to repeatedly seal package(s) using a specific range or ranges of Temperature, Pressure, and Dwell Time.  These parameters are also known as the "Critical Sealing Parameters."  The goal of validation is to insure that EVERY package that is put through a sealer gets a perfect seal, every time!   Our complete line of Medical Sealers offer validation capabilities to meet the validation requirements of even the most stringent validation protocol!

Watch Here for definition or Call The BaggingGuys today!

Watch Here for definition or Call The BaggingGuys today!

Watch Here for definition or Call The BaggingGuys today!

Watch Here for definition or Call The BaggingGuys today!

Watch Here for definition or Call The BaggingGuys today!

Used on our FULLY-AUTOMATIC HAMER HORIZONTAL FORM, FILL, & SEAL equipment, V-fold Rollstock is long roll of polyethylene bag film that, prior to being rolled up, is folded in half (like a book) along its length.  As the V-fold is unrolled on the HFFS machine, the "V" part of the fold becomes the bottom of the bag when side seams are sealed and cut by the machine.  Use of V-fold Rollstock eliminates the need for you to buy premanufactured bags.  By using FFS EQUIPMENT to make and fill their own bags, many customers have seen bag cost savings of nearly 20%.

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Watch Here for definition or Call The BaggingGuys today!

Watch Here for definition or Call The BaggingGuys today!

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A period over which the machine manufacturer warrants a new (and sometimes used or refurbished) machine from manufacturing defects.  Warranties typically cover mechanical items and exclude electrical and CONSUMABLE / WEAR PARTS like SEALING BANDS, HEAT ELEMENTS, THERMOCOUPLES, INK ROLLS, etc.  Warranties for equipment we offer vary slightly from manufacturer to manufacturer.  Please CALL US for copies of specific machine warranties.

A Wicket Bag is a pre-made, pre-cut bag that is specially made with an extra tab at the top.  The tab has two holes in it, called Wicket Holes.  The wicket holes allow the bags to be attached to one another with a U-shaped, metal wire called a wicket.  The holes also allow the bags to be mounted on a machine called a Wicket Bagger that can automatically open, fill and seal the bags.   In most cases, the wickets are also automatically trimmed off prior to the sealing operation.  EXAMPLE: To see an example of a wicket bag, look at almost any loaf of sliced bread at a supermarket.  At the open end of the bag you will see the tab (one side of the bag is longer than the other) with two ripped holes in it.  The holes were ripped when the bag was torn from the wicket following the filling operation.

A Wicket Bagger is a machine designed to open and fill pre-made Wicket Bags.  Bakery Mixes, Coffee Beans, Snack Foods, Frozen Foods, and any other free-flowing materials are often filled on wicket baggers.

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See RESEALABLE  CLOSURE.  Resealable zipper closures are becoming extremely common on STAND-UP POUCHES for products like coffee, snack foods, bird seed, pet foods, etc.

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