Packaging Terms Explained

Packaging Terms Explained



Machinery Terminology

Ampoule: A small glass vessel in which liquids for injections are hermetically sealed.

Bag-in-Box: A package comprising a carton containing a bag which closely fits the carton and contains the product.

Bead Seal: A seal in which the two edges of the material are welded together along a very narrow strip without overlap.

Blister: A thermoformed clear plastic shape which is used to make a blister pack.

Blister Pack: A package which usually comprises a clear plastic shape containing a product, which is then joined to a backing card or film.

Block Bottom Bag: A flexible package with a tucked and sealed base which allows the filled and sealed pack to stand on its base.

Capsule: A secondary seal placed over a primary closure, typically used on wine bottles.

Carton: A container which is made from carton board, generally between 0.25mm and 1.0mm in thickness, and is usually delivered to the user in the form of a carton blank or side seam glued skillets.

Carton Blank: An individual carton in the flat after cutting and creasing and with the strippings removed.

Carton Board: A material made from one or more layers of fibrous cellulose material to form a rigid or semi-rigid construction, generally 0.25mm to 1.0mm thick.

Carton Tray: A rectangular open carton with sides and ends made from carton board generally between 0.25mm and 1.0mm in thickness and usually delivered to the user in the form of a carton blank.

Case: A container which is generally made from corrugated board is used to contain groups of packages and is delivered to the user in the form of a glued or stitched case or a flat blank.

Closure: A packaging component used to close a container or package.

Collapsible Tube: A container for pastes, usually made from a malleable metal or plastic.

Corrugated Board: A material comprising one or more sheets of fluted paper stuck between flat sheets of paper.

Crimping: Mechanical distortion of the edges of a deformable material.

Crown Closure: A metal closure containing a sealing wad, which is crimped to the neck of a bottle.

Cup / Tub: A thin walled tapered container.

Deformable Material: A material which can be formed by the application of pressure only.

Film Reel: A continuous sheet of paper, carton board, plastics film, metal foil or flexible laminate wound on a cylindrical core.

Film Web: A continuous sheet of paper, plastics film, metal foil or laminate.

Fin Seal: A seal in which the two edges of the material are joined together inner surface to inner surface.

Flexible Packaging Film: A continuous sheet of paper, plastics film, metal foil or laminate.

Group Package: An assembly of products prepared for transit, including cases, crates, trays, shrinkwrap packs, bundles and multipacks.

Gusset: The inwardly folded portion of a flexible package, usually a bag or sack.

Layer Pad: A sheet of card or corrugated board used to stabilise a pallet or loading unit.

Lay Flat Tubular Film: A continuous tube of plastic film usually supplied wound on a core.

Loading Unit: Generally a palletised load, but including assemblies of group packages which are not on pallets.

Longitudinal Seal: A seal made on a package in line with the direction of material travel in the machine.

Magazine: A mechanical assembly designed to hold stacks of cartons, carton blanks, leaflets, labels, lids or stackable containers.

Mandrel: A mechanical assembly around which a bag or carton is formed.

Overlap Seal: A seal in which the two edges of the material are joined together inner surface to outer surface.

Package: A term embracing all types of packages e.g. bottles, cans, cartons, bags etc.

Packaging Material Transport Mechanism: A mechanical assembly which transports packaging material through the Packaging Machine.

Paper Laminate: Paper that has been coated or bonded to one or a number of other materials e.g. polyethylene or aluminium foil.

Pre-made Bag: A pre-formed flat or gusseted flexible container longitudinally seamed and closed at one end made from paper, plastics film, foil, laminate or a woven material etc.

Pre-made Sack:
A pre-formed flat or gusseted sack longitudinally seamed and closed at one or both ends made from paper, plastic film, laminate, or a woven material etc.

Rigid Container: A term embracing bottles, jars, drums, barrels, kegs, pails, cups, tubs, ampoules, vials, cans and composite cans.

On Closure: A straight-sided aluminium closure which is rolled over the neck of a bottle to form the screw thread.

Sachet: A flat package which when formed from two webs of flexible material is sealed on four sides and when formed from one web is sealed on three or four sides.

Scroll:
A mechanism used to separate and accurately position rigid containers, usually comprising a solid plastic cylinder with a helical groove cut in it to accept the containers.

Shrink Wrapping: A process in which a package is wrapped in a thermoplastic film which is then heated so that the film shrinks to closely fit the package.

Star Wheel: A mechanism used to accurately position rigid containers, usually comprising a solid plastic wheel with machine pockets to accept the containers.

Side Seam Seal: The longitudinal seal which is made by stitching, heatsealing or applying adhesive, when a carton blank is formed into a flat carton.

Skillet: A carton blank which has been folded and side seam glued.

Stretch Wrapping:
A process in which a package is wrapped in a thermoplastic film which is pulled tightly around the package. The film may be formulated to stick to itself on contact.

Tear Tape: A plastic tape which is sealed to a packaging material, usually plastic film, to assist opening of the pack.

Thermoformable Material: A material which when heated can be formed by pressure and/or vacuum.

Thermoplastic Film: A plastic film which shrinks when heated.

Top Load Carton: A one piece carton which is erected by first interlocking or gluing the side members to the body part and having a lid with side flaps which can either be tucked or glued to the carton body to close the carton.

Transverse Seal: A seal made on a package at right angles to the direction of material travel in the machine.

Tray: An open topped container, typically made from cartonboard or corrugated board and supplied to the user as a flat blank or pre-glued and folded.

Vial: A small bottle for liquids.