It is important to understand what type of corrugated you are using before deciding to substitute any equivalent. per sq. These include a wide variety of build-ups, dividers, partitions and other inner packing pieces. When determining the basis weight from combined board, the take-up factor of the corrugated medium, which varies with flute size, and the weight of the adhesive must be considered. Slotted Boxes:International FibreboardCase Code: 02 Series0201Regular Slotted Container(RSC), Telescope Boxes:International FibreboardCase Code: 03 Series0301Full Telescope Design StyleContainer (FTD), Folders:International FibreboardCase Code: 04 Series0401One Piece Folder(OPF), Rigid Boxes (Bliss Boxes):International FibreboardCase Code: 06 Series0601ABliss Style Containerwith End Flaps, Self Erecting Boxes:International FibreboardCase Code: 07 Series0760Self Erecting SixCorner Tray, Interior Forms:International FibreboardCase Code: 09 Series0904Tube. Wrap-around Blank: A scored and slotted sheet of corrugated fiberboard that is formed into a box by folding it around its contents. Both are made of a special kind of heavy paper called containerboard. Linerboard is the flat, outer surface that adheres to the medium. Ply: Any of the several layers of linerboard or solid fiberboard. Bulk: Unpackaged goods within a shipping container. Sharp Packaging Baggers and Bagging Systems, American Packaging Machinery (APM) Shrink Systems, Modern Slavery Act Transparency Statement. Linerboard is the flat material, typically on the outer surfaces of the board but also on the inside for some structures, that adheres to the medium. Full Telescope Half Slotted Container (FTHS) — The two-piece body is made from two half-slotted containers. (6 mm) and 3/8 in. The strength is directly related to the compression strength of both the liners and medium. There are four common types: Corrugator: The machine that unwinds two or more continuous sheets of containerboard from rolls, presses flutes into the sheet(s) of corrugating medium, applies adhesive to the tips of the flutes and affixes the sheet(s) of linerboard to form corrugated board. Flute direction may be perpendicular to the length of the sheet (usually for top-opening RSCs) or parallel to the length of the sheet (usually for end-opening RSCs). They may be simple rectangle, scored, slotted or die-cut shapes. Sometimes called inside and outside liners. Bursting strength is reported in pounds (for example, 275#). Smaller flute profiles provide enhanced structural and graphics capabilities for use in retail packaging. This symbol identifies the manufacturer and serves as a symbol of compliance with the stated specifics. In addition, corrugated boxes can be custom designed to meet the specific needs of the customer. if stacked to high, the boxes lower in the stack may burst). Pad: A corrugated or solid fiberboard sheet, or sheet of other authorized material, used for extra protection or for separating tiers or layers of articles when packed for shipment. Kraft: German word meaning “strength”; designating pulp, paper or paperboard produced from wood fibers. This style of box is used when the length of the box is considerably greater than the width, resulting in a long gap between the inner flaps. Unit: A large group of bundled or unbundled boxes, banded and/or stretch filmed together for shipment. Self-Erecting Boxes typically feature regular slotted container or telescope-style tops. The Mullen Bursting Test measures a box’s ability to withstand external or internal forces, and to contain the contents during handling. Outside dimensions are used in the carrier classifications and in determining pallet patterns. There are two gages of strength. ECT is a measure of the edgewise compressive strength of corrugated board. When pressure is applied to the side of the board, the space in between the flutes acts as a cushion to protect the container's contents. as applied by a Mullen Tester. Both are made of a special kind of heavy paper called containerboard. Flutes with the same designation have similar size, but may have various flute profiles and number of flutes per foot within a given designation: In recent years not only has there been a proliferation of flute profiles, but there has been increase in the variation in flute characteristic measurements for any given flute profile. These flutes are made of fiberboard, same as the linerboard, and they provide corrugated sheets with strength, cushion, and compression resisting qualities. Linerboardis the face of the fiberboard sheet that the corrugated sheet is glued on. The flutes act to keep the linerboard sheets separated, maximizing the bending rigidity of the board. In addition, corrugated boxes can be custom designed to meet the specific needs of any box user. Inside dimensions are used to assure proper fit around a product. When using certain specifications in the carrier classifications, minimum edge crush values must be certified. Keep in mind there are many other standard styles from which to choose. Flutes come in several basic designations. Over 15,000 related products in stock. Chipboard: A paperboard generally made from recycled paper stock. For example, if you are shipping a product that weights between 50-65 pounds, a 32 ECT single-wall carton should be sufficient, in most cases. Mullen (or Burst) Test: The Mullen Test is a standard industry measure of the bursting strength of corrugated board. Inner Packing Pieces are scored and/or folded pieces of fiberboard used for cushioning, suspension and separation, and to fill voids. Fiberboard: A general term describing combined paperboard (corrugated or solid) used to manufacture containers. The inner flaps, with no gap, provide a level base for products. Edge Crush Resistance/Short Column Compression (ECT): The amount of force needed to crush on-edge combined board is a primary factor in predicting the compression strength of the completed box. in.) The correct technical term is "corrugated fiberboard carton.". All rights reserved. Facings: Sheets of linerboard used as the flat outer members of combined corrugated board. Bale: A shaped unit of materials, enclosed in a fiberboard container or other wrapping, bound by strapping, rope or wire. Flaps: Extension of the side wall panels that, when sealed, close the remaining openings of a box. When measuring the inside of an existing box, make sure to measure from the center of the score (the crushed fold line). Popular styles include: One Piece Folder (OPF) — One piece of board is cut so that it provides a flat bottom, with flaps forming the sides and ends, and extensions of the side flaps meeting to form the top. The blank is scored and slotted to permit folding. The amount of overlap is measured from flap edge to flap edge. The inner flaps meet at the center of the box, providing a level base and full top protection. Regular Slotted Container (RSC): A box style created from a single sheet of corrugated board. Cardboard: A thin, stiff pasteboard used in the creation of playing cards, signs, etc. You must have JavaScript enabled in your browser to utilize the functionality of this website. Blank or Box Blank: A flat sheet of corrugated board that has been cut, scored, and slotted, but not yet glued together. The depth is the distance between the opening and the opposite panel. These consist of one or more pieces of combined board, with an unbroken bottom surface and scored to fold around the product. The raw materials used to make containerboard may be virgin cellulose fiber, recycled fiber or a combination of both. The length is always the longer dimension, and the width is always the shortest dimension, measured along the opening of the box. Flaps are used to form the joints. Corrugated fiberboard or "combined board" has two main components: the liner and the medium. For example differing formulas for a 200# single wall corrugated will cause the equivalent ECT board to vary between 32 ECT and 44 ECT. The two outer flaps are one-half the container’s width in order to meet at the center of the box when folded. This is a true performance test and is directly related to the stacking strength of a carton. Bending: The ability of containerboard or combined board to be folded along scorelines without rupture of the surface fibers to the point of seriously weakening the structure. An equivalent 44 ECT rated single wall carton will weigh on average 149 pounds per 1000 square feet of material used. Partitions (or Dividers) provide a separate cell for each item in a box. These arches are known as flutes and, when anchored to the linerboard with an adhesive, they resist bending and pressure from all directions. The medium is the wavy, fluted paper between the liners. (9 mm). This leads to quite a bit of confusion in the marketplace. Center Special Full Overlap Slotted Container (SFF) — Inner and outer flaps are cut to different lengths. The numerical code system, known as the International Fibreboard Case Code, was developed by the European Federation of Corrugated Board Manufacturers (FEFCO) in collaboration with the European Solid Board Organisation (ESBO) to avoid confusion when communicating in different languages. Corrugated Liner Grades - English stocks a wide selection of popular boxes, shipping materials and more! 1.1.1 Types of Liner . The fundamental difference between the two tests is that under the Burst Test a minimum board basis weight is required. Double Wall: A corrugated board construction where two layers of medium are glued between three layers of flat linerboard facing. Tubes are scored rectangles, folded to form a multi-sided structure. Caliper: Usually expressed in thousandths of an inch (mils) or sometimes referred to as "points." Each makeup will vary slightly in overall strength. The sheet is scored and slotted to permit folding. Five Panel Folder (FPF) — A single cut and scored piece features a fifth panel used as the closing flap, completely covering a side panel. The 44 ECT board will reduce the material used by 14.8%. Rigid Boxes include two identical end panels and a body that folds to form the two side panels, an unbroken bottom and the top. Center Special Overlap Slotted Container (CSO) — All flaps have the same length (one-half the length of the box).
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