Flexible Packaging Exam
1. a single layer
Flexible film packaging can be
2. a single layer that is made of of multiple co-extruded layers
comprised of .....
3. multiple layers that are laminated together
what are the 2 lamination processes extrusion lamination and adhesive lamination
for multi-layer films
flexible packaging is any package or readily changed
part of a package whose shape can
be _______ _______
examples of flexible packaging bags, pouches, liners, overwraps, sleeves
flexible package sealability, seal integrity, and barrier functionality (aro
product shelf life is impacted by:
water vapor, oxygen, light)
the extent to which a film prevents the transmission, permeation, or
define barrier
diffusion of liquid, gas, light, and or odor
define oxygen barrier prevents oxygen from entering the package
the quantity of oxygen that permeates through a plastic film over a cer
define oxygen permeability
period of time.
define moisture barrier prevents moisture from entering or exiting the package
, Flexible Packaging Exam
the quantity of water vapor that permeates through a plastic film over a
water vapor or moisture permeability
certain period of time.
define light barrier precents exposure to light
optical density a measure of the opacity of a film to the transmission of natural light
aroma or odor barrier prevents undesirable smells from entering or exiting the package
A measure of the effectiveness of a film to preventing the loss of arom
aroma barrier
from the packed product
chemical resistance prevents or hinders chemicals from entering or exiting the package
how easily and effectively a film forms a seal in contact with the sealing
Sealability jaws under the influence of sealing temperature or pressure and time o
dwell
seal strength the force necessary to break apart the seal
seal initiation temperature (SIT) the minimum temperature at which the film starts to seal
a measure of the effectiveness of a seal in resisting any form of leakage
seal integrity through the sealed area. note that the folds and creases in the seal are
can contribute to a loss of seal integrity.
, Flexible Packaging Exam
the force required to separate two fused plastic materials while still ab
hot tack strength
their melting point
what does low hot tack strength product weight/ gas pressure during gas flushing may open a warm se
indicate
tensile strength the force required to break a plastic film when pulled
the film has stretched to the point of breaking (expressed as a percent
elongation
of its original length)
the max force it takes to perforate a film (measured using a needle or d
puncture resistance
test)
the force required to start a tear in a film / continue to tear a film after a
tear initiation/propagation strength
initial cut or tear has been made
film thickness measurement gauge or caliper in Mils, Microns
(instrument and units)
yield the values that are driven by gauge and the polymer density
basis weight the inverse yield - weight of film per given unit area
the width or converted roll film is cut down to form a single package w
slit width
or length
1. a single layer
Flexible film packaging can be
2. a single layer that is made of of multiple co-extruded layers
comprised of .....
3. multiple layers that are laminated together
what are the 2 lamination processes extrusion lamination and adhesive lamination
for multi-layer films
flexible packaging is any package or readily changed
part of a package whose shape can
be _______ _______
examples of flexible packaging bags, pouches, liners, overwraps, sleeves
flexible package sealability, seal integrity, and barrier functionality (aro
product shelf life is impacted by:
water vapor, oxygen, light)
the extent to which a film prevents the transmission, permeation, or
define barrier
diffusion of liquid, gas, light, and or odor
define oxygen barrier prevents oxygen from entering the package
the quantity of oxygen that permeates through a plastic film over a cer
define oxygen permeability
period of time.
define moisture barrier prevents moisture from entering or exiting the package
, Flexible Packaging Exam
the quantity of water vapor that permeates through a plastic film over a
water vapor or moisture permeability
certain period of time.
define light barrier precents exposure to light
optical density a measure of the opacity of a film to the transmission of natural light
aroma or odor barrier prevents undesirable smells from entering or exiting the package
A measure of the effectiveness of a film to preventing the loss of arom
aroma barrier
from the packed product
chemical resistance prevents or hinders chemicals from entering or exiting the package
how easily and effectively a film forms a seal in contact with the sealing
Sealability jaws under the influence of sealing temperature or pressure and time o
dwell
seal strength the force necessary to break apart the seal
seal initiation temperature (SIT) the minimum temperature at which the film starts to seal
a measure of the effectiveness of a seal in resisting any form of leakage
seal integrity through the sealed area. note that the folds and creases in the seal are
can contribute to a loss of seal integrity.
, Flexible Packaging Exam
the force required to separate two fused plastic materials while still ab
hot tack strength
their melting point
what does low hot tack strength product weight/ gas pressure during gas flushing may open a warm se
indicate
tensile strength the force required to break a plastic film when pulled
the film has stretched to the point of breaking (expressed as a percent
elongation
of its original length)
the max force it takes to perforate a film (measured using a needle or d
puncture resistance
test)
the force required to start a tear in a film / continue to tear a film after a
tear initiation/propagation strength
initial cut or tear has been made
film thickness measurement gauge or caliper in Mils, Microns
(instrument and units)
yield the values that are driven by gauge and the polymer density
basis weight the inverse yield - weight of film per given unit area
the width or converted roll film is cut down to form a single package w
slit width
or length
