Approval Drawing - A drawing supplied by the plant for the prospective
customer's review and approval, prior to production, in order to
assure compliance with the customer's needs and expectations.
Baffle - Pieces
a fabric sewn across each corner of a tubular or 4 - panel bag to
improve the bag's 'squareness' or appearance.
Bag Height - Height
dimension of an FIBC measured from the Top Seam to the Bottom Seam.
Belt Patch - A
piece of fabric sewn either between the main fabric of the bag body
and the Lift Belt, or on top of the Lift Belt, within the belt sewn
portion, used to improve sift resistance and/or the safe working
Bias Strap or Tape
- Made of multifilament yarns, (MFY), polyester or polypropylene,
and used to tie inlets and outlets. Also called a Web Tie.
Body Fabric - The
tubular portion of a seamless or circular woven bag.
Bottom Fabric -
The bottom material of a tubular or 4 - panel bag.
Bottom Spout -
Also called a Discharge Spout, used as an outlet to empty the contents
of the FIBC.
Breathable Fabric /
Bags - Uncoated or non-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 seams on each of the bag's sides.
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.
Conical Top - A
variation of an inlet, where the top is a pyramid - type achieved
by assembling 4 pieces of trapezoidal shaped fabric. Also called
a Cone Top.
- May also be called a Stevedore Belt, Rope, or Strap. It is a belt
connecting either two adjacent lift loops, or two adjacent belt
sewn portions, used alternatively for 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
Cordlock - 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.
Denier - The weight
of yarn in grams per 9,000 meters
- Also called a Bottom Spout, used as an outlet to empty the contents
of the FIBC.
- Typically made of either polyethylene or polypropylene, it is
where shipping or identifying documents are usually placed. Also
called a Pocket or Envelope.
- A type of spout construction similar in purpose as to a petal
closure, but with the loop/string along the circumference of the
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.
Duffel Bottom -
A variation of a bottom or discharge spout that usually uses a drawstring
closure, where the spout is folded to form the drawstring closure.
Extended Belt -
A type of FIBC construction where the belt extends around the bottom
of the FIBC. This construction is not applicable for U - panel FIBC's.
Fabric Mesh - The
measure of the density of the fabric weave, measured as the number
of yarns per inch in both the Warp and Weft directions. Our standard
is a 12x12 mesh.
Fabric Weight -
The measure of the fabric weight in ounces per square yard or grams
per 100 square centimeters. Our standard is 6.5-ozs/sq. yd.
FIBC - Flexible
Intermediate Bulk Container
Fill Spout - Also
called an inlet spout or top spout, used as the inlet for filling
an FIBC. It is designed to fit the customer's filling chute during
Filler Cord - Our
standard material used in manufacturing sift-resistant FIBC's.
Form - Fitted Liner
- A type of polyethylene liner which follows the shape of the bag,
(from top to bottom spout), and sewn on the top seam and the bottom
seam of the bag. It is also be sewn onto the free end of the top
spout. It typically has a flange around the perimeter, which allows
the top and bottom to be sewn to the bag fabric, without puncturing
the liner itself.
Full Open Discharge
- A type of discharge whose outlet extends from the bottom seam
and follows the bag's base dimensions. Also called a Full Open Dump.
Hem / Hemming -
A fold and sew operation which prevents fraying of cut fabric. This
also provides a clean finish to the FIBC. It may be either towards
the inside or outside of the bag.
Hose - An accessory
often used on a petal closure to facilitate tying it off. This may
be either polypropylene or polyvinyl chloride.
Lay Flat Width
- The width of tubular fabric if stretched or laid flat. It is twice
the width of one bag side; i.e. a 35 x 35 bag would have a LFW of
Lift Belt - Also
called a lift or lifting 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.
Loop Height - The
free or open loop height measured from the tip of the MW sewn portion
to the free end of the lift belt.
Main Fabric - Fabric
constituting the U - panel of a sewn bag.
MFY - Multi-filament
yarns, used in the weaving of bias tape / straps and lift belts.
May be constructed of polypropylene or polyester threads.
- Bags designed in accordance with British Standards requiring a
6:1 Safety or Service Factor, (SF). Note: we do not offer any guarantees
or recommendations for multiple uses of our bags. Since the inspection
of the used bags is beyond our control, we have no way of knowing
if a bag is damaged in its initial use.
Perimeter Belt or Band
- Bias tape / strap sewn around the top seam as a reinforcement
or identifying mark, occasionally referred to as reinforced around
Petal Closure -
A 4-petal-like spout construction used to hold in the spout during
Petal Patch - A
4-piece fabric component, approximately 10cm x 10cm in size, sewn
as a reinforcement to the "loop" portion of the petal closure.
- A type of petal closure that is separate from the bottom fabric.
Polyester - A type
of polymer often used in producing multifilament yarns and threads.
It is not easily recyclable.
A type of polymer used in producing monofilament and multifilament
yarns and threads. It is recyclable and is used as our standard
fabric and most threads.
Port Hole - A type
of outlet construction without a spout. The hole cut is reinforced
with bias tape / strap.
- A set of documents prepared by CorrPakBPS which contains the detailed
description of an FIBC's features, components and special instructions
as approved by the customer in the Approval Drawings.
- 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.
Remote Open Discharge
- A type of outlet that has provisions for discharge of material
at a distance from the FIBC.
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 kilograms.
Safety Factor -
Also referred to has 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".
- A document prepared by CorrPakBPS during the initial design stages
of an FIBC.
Sanitary Flap -
A bag accessory that is usually paired with a remote open discharge,
that is used to hold in or protect the spout during filling and
Seam - A sew line
made by the attachment / assembly of two or more components.
Side Fabric - A
fabric component of a sewn bag style of construction. This can be
either 2 pieces attached to the U - Panel, or 4 pieces which form
the 4 - Panel bag.
- 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.
Single Trip Bag
- An FIBC designed in accordance with British Standards requiring
only a 5:1 SF.
Soft Strap - A
lift belt made with polyester multifilament yarns.
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.
- 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.
Stiff Strap - A
type of lift belt made of MFY's as weft and PP yarns as warp, allowing
it to stand more upright on the filled bag.
Stitches per Inch
- A sewing specification requiring "X" number of stitches per inch,
(such as 4 stitches per inch).
Stopper - Pieces
of fabric material sewn at the tip of an "x - cut" to prevent bag
failure at this point.
Top Fabric - The
top fabric used on a FIBC.
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. The top
may be tied with the spout top's bias tape closure to hold in place.
Also called a tubular liner.
UV Stabilized -
A feature of an FIBC that provides protection from prolonged exposure
to the sun's degrading UV rays. A pigment is added to the resin
prior to extrusion of the yarns to provide this protection. This
is standard for all CorrPakBPS bags.
Volume - the size,
or amount of material, an FIBC can hold measured as the length times
width times height for a sewn bag, but is a more complicated calculation
for a tubular bag. The perimeter of the base is considered to be
the circumference of a circle, from which the area is then calculated.
This area is then multiplied by the height minus 4 inches to calculate
the volume. This adjustment is made to account for the fact that
a bag will tend to 'swell' outwards and 'shrink' in height somewhat
Warp - Yarn or
tape in a fabric, oriented perpendicular to the Weft yarn during
weaving. This would go from top to bottom in the body fabric.
Web Tie - Made
of multifilament yarns, (MFY), polyester or polypropylene, and used
to tie inlets and outlets. Also called a Bias Strap or Tape.
Weft - Yarn or
tape in a fabric, orientated perpendicular to the Warp yarn during
weaving. This would go from left to right in the body fabric.
Yarn / Tape - Extruded PP sheet, slit and
stretched in annealing ovens to form part of the woven fabric for