Most manufactured products inevitably need protection
from atmospheric influences no matter how inert they are. This is
because the composition of atmosphere has various elements, which will
always react to a certain extent with most physical elements. Moisture
sensitive products are those that are affected by the presence of
humidity and oxygen in the atmosphere. Bag liners protect products from
this atmospheric contamination.
Chemical Properties Causing Oxygen and Water Sensitivity
Hygroscopy is one of the properties of elements and
molecules that causes water and oxygen sensitivity. It is the
characteristic of a substance to draw and hold on to water molecules
from the atmosphere. It is important to note that once the substance
attracts moisture, it becomes chemically altered. Substances
exhibiting this quality include ethanol, sugars, glycerol, salts,
chlorides, potassium and sodium hydroxides. Presence of the smallest
ration of these substances in the product causes Hygroscopy and must
be avoided. Bulk bags liner are special types of bags available in
varying sizes used to protect products from moisture contamination
during transportation. Kindly Visit - http://www.vishakhapolyfab.com/v-bigbagliner.shtml
Creation of Oxygen and Moisture Barriers in Products Handling
This is done through various means but the most
common one is the use of liners. Introducing liners inside the package
ensures that the product is excluded from the atmosphere. Caution
must be taken on the characteristics of the material used especially
when considering the duration or the shelf life of the product .The
effect of regular temperature changes during transportation and
storage must also be considered while choosing an appropriate
protective material.
Strength and Firmness Properties That Ensure Greater Protection
The ability of a material to withstand pressure,
temperature fluctuations and even mechanical stresses greatly
contributes to the firmness and protection from environmental
influences. Development of cracks and micro pores are some of the
weaknesses that can go undetected and lead to damage of the products.
Thorough analysis of available materials must be done as per the
protection requirements for material firmness.
Chemical Composition of Protecting Material
The chemical composition of the liners largely
depends on the product characteristics such as Hygroscopy or dust
producing properties. Polythene liners or EVOH liners are commonly
used and the actual polymers combined depend on the manufacturer.
Commonly Available Dimensions
The average or the typical height of the bulk bag
ranges from 30 up to 70 inches and base seam dimensions of 35 * 41
inches. The particular dimensions are however nothing to worry about
so much because custom-made bags are available. However, when there is
an element of staking or the bag being self-supporting, the base size
should be as large as possible due to stability of the flexible packaging material.
Recommended waste management practice after use handling
Recycling of used material is the best waste
management system. In case the material is not recyclable,
incineration can be done to avoid littering and environmental
degradation. It is important to consult with individual states
regulations for clear direction on best disposal practice.
Conclusion
Moisture and oxygen contamination are a serious
concern or most products. To prevent contamination from occurring,
bulk bag liners have been developed to create effective barriers,
isolating the product from the atmospheric elements. The strength and
permeability of the material are important considerations and
permeability tests can be done before using the material.
This article has been posted by Ankit Doshi.
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