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 load, (SWL).
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
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
Connecting Belt -
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 length.
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
Discharge Spout -
Also called a Bottom Spout, used as an outlet to empty the contents of
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.
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
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
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 70".
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.
Multi-trip FIBC's -
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 top
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.
Petal-type Patch - 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.
Polypropylene - A
type of polymer used in producing monofilament and multifilament yarns
and threads. It is recyclable and is used as our standard fabric and
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.
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.
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".
Sample Drawing - A
document prepared by CorrPakBPS during the initial design stages of an
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.
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.
Single Trip Bag - An
FIBC designed in accordance with British Standards requiring only a
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.
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.
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 when filled.
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 the FIBC.