Volume – The size, or amount of material, an FIBC can hold. It is generally measured in Cubic Feet.
Bag Length, Width – Dimension of an FIBC measured from the left seam to the right seam.
Bag Height – Height dimension of an FIBC measured from the top seam to the bottom seam.
Safe Working Load – SWL is the amount of load, (in pounds or kilograms), which a bag is designed to carry. Note: Most customers use the metric system where 1 ton equals 2205 pounds or 1000 kilogram.
Safety Factor – Also referred to as a Service Factor, it is an industry standard requiring the FIBC to handle five or six times its Safe Working Load, (SWL), normally written as a ratio, “5:1 or 6:1 SF”.
Single Trip Bag – An FIBC designed in accordance with British Standards or ISO 21898 requiring only a 5:1 SF.
Multi-Trip FIBC’S – Bags designed in accordance with British Standards requiring a 6:1 Safety or Service Factor, (SF). Note: Most manufacturers do not offer any guarantees or recommendations for multiple uses of bags. Since the inspection of the used bags is beyond the control of the manufacturer, they have no way of knowing if a bag is damaged in its initial use. For additional information regarding multi-trip bags, reference IOS 21898.
UV Stabilized – A feature of an FIBC fabric that provides protection from prolonged exposure to the sun’s degrading UV rays. An additive is added to the resin prior to extrusion of the yarns to provide this protection.
Side Fabric – A fabric component of a sewn bag style of construction. This can be either two pieces attached to the U-Panel, or four pieces, which form the Four Panel bag.
Body Fabric – Main fabric used on the body of a u-panel, four panel or circular bag.
Bottom Fabric – The bottom material of a tubular or four panel bag.
Coated Fabric/Bags – Fabric or bag which is coated/laminated with polypropylene (PP) to prevent moisture intrusion or sifting of the contents. Also called Non-breathable or laminated fabric/bags.
Circular Woven Bag – Also called a tubular bag, it is made from fabric woven on a circular loom, which is then cut to the proper length for a specified bag height, thereby eliminating the vertical seams on each of the bag sides.
Reinforced Section – Section of the FIBC where the lift belt is sewn onto the fabric. This section of fabric has twice as many Warp yarns, which contributes to the strength of the bag. It is also called a Tramline.
Top Fabric – The top fabric used on a FIBC. This is often a lighter fabric than the main (body & bottom) fabric as it has much less stress or load bearing responsibility.
Duffel Top – A type of FIBC similar to a duffel bag whose inlet extends from the top seam and follows the bag’s base dimensions.
Fill Spout – Also called an inlet spout or top spout, used as the inlet or filling an FIBC. It is designed to fit the customer’s filling chute during loading.
Bottom Spout – Also called a Discharge Spout, used as an outlet to empty the contents of the FIBC.
Discharge Spout – Also called a bottom spout, used as an outlet to empty the contents of the FIBC.
Spout Diameter – A dimension of the spout measured across the circular opening.
Spout Height – Height dimension or length of the spout measured from its point of attachment on the top/bottom fabric to its free end.
Petal Closure – A four-petal like spout construction used to hold in the spout during transport.
Spout Cover – Also called a petal cover, it is a piece of fabric material sewn between the spout and the petal closure used to hold in /protect the spout. May also be referred to as a “pancake” due to the round shape commonly used.
Baffle – Pieces of fabric sewn across each corner of a tubular or four – panel bag to improve a bag’s, appearance, improve the stability of the load and to more efficiently utilize storage or shipping space.
Lift Belt – Also called a lift or fitting loop, supports the overall Safe Working load, (SWL), of a filled bag during handling & transport. It may be made of either a stiff strap or soft strap. It can come in various widths and strengths and should be specified in each bag specification. Typical lift loops have a tensile strength between 3000 and 5000 pounds.
Loop Height – The free or open loop height measured from the bag top to the middle of the free end of the lift belt.
Stevedore Strap – May also be called a Connecting Belt, Rope, or Strap. It is a belt connecting either two adjacent lift loops, or two adjacent belt sewn portions, used for single point lifting. A belt or strap is usually flat, while a rope is braided. Many people use this term loosely, so it is useful to clarify this point – including the required length.
Perimeter Belt or Band – Bias tape/strap sewn around the top seam as a reinforcement or identifying mark, occasionally referred to as reinforced or ring around top (RAT). Also known as Safety Belt. This belt is most important if the bags are to be picked up on less than all four loops.
Tube Liner – A polyethylene liner with no spouts or contours, it is a straight cylinder, which may or may not have one end heat-sealed. This low cost liner can be installed in the FIBC loose or by gluing or by sewn tabs. Also called a Tubular Liner.
Form-Fitted Liner – Designed to take the exact shape of the FIBC. Form-Fit Liners will allow improved filling and complete discharging of product. Unlike a basic “tube liner”, Form-Fit Liners offer a flat top and bottom incorporate a spout diameter and length to best compliment the FIBC’S fill and discharge spouts. These spout can also be heat sealed closed for added sanitation and protection. Form-Fit Liners are available in a variety of standard and co-extruded Polyethylene’s, including barrier and anti-static features. Form-Fit Liners can be affixed permanently to the FIBC by gluing or sewn tabs or can be designed to be easily removed from the FIBC with ties on the tabs.
Cord lock – A closure device to hold the rope or cord in place on the spout – typically used on the discharge of bags. They come in a variety of sizes and eliminate the need for hand tied knots.
Document Pouch – Typically made of either polyethylene or polypropylene, it is where shipping or identifying documents are usually placed. Also called a Pocket or Envelope.
Drawstring Closure – A type of spout construction similar in purpose as to a petal closure, but with the loop/string along the circumference of the closure.
Filler Cord – Typically a polypropylene material used in manufacturing sift-resistant FIBC’S. A rope or braided yarn-like cord that is sewn into a seam to help prevent the escape of fine dusts and powders.
Sift-Resistant Construction – A feature of an FIBC that provides resistance from product sifting when the bag is filled with very fine materials. Also referred to as “Sift proof” construction. This typically utilizes coated fabric and filler cord in the sew lines.
Web Tie – Made of multifilament yarns, (MFY), polyester or polypropylene and used to tie the inlets and outlets. Also called a Bias Strap, Tape, or Spout Ties.