Books on plastic packaging materials and its effects on food stuffs
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High Density Polyethylene (HDPE) HDPE is the most widely used type of plastic. It's used to make many types of bottles and containers.
Unpigmented bottles are translucent, have good barrier properties and stiffness, and are well suited to packaging products with a short shelf life such as milk.
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In every home is now plastic is entering as packaging material,as we cannot ignore the use for packaging,and therefore we should know what is the effect on our health and how can we use in proper way to eliminate the risk of these materials.to explain the effect of plastics and other packaging material ,we should examine the composition and impacts of polymer on our health,let see this p paragraph taken from book attached,In this book all synthetically produced or processed carbon containing high molecular
weight substances are included under the term plastic. A high molecular weight
material is considered to be that containing more than 1000 atoms. Plastics are a 20th
century discovery, the first plastics being derived from high molecular weight natural
raw materials, e.g. regenerated cellulose (cellophane) from cellulose around 1910.
Plastics were first seen as replacements for natural raw materials during times of
shortage , e.g. synthetic rubber during the first world war. However, since the second
world war a new class of useful materials has been developed whose properties can be
tailored through control of their syntheses to fit every desired application. With a
yearly production of nearly 100 million tons, plastics form a pillar of the economy
without which today’s standard of living would not be attainable.
The importance of plastics is attested by the abundance of scientific and technical
literature on the subject. For several reasons the following discussion on the manufacture,
structure and properties of plastics is necessarily a brief introduction to the subject
as found in the literature:
1. Measurable residual amounts or conversion products from the many different
raw materials and processing aids used in the various plastic synthesis processes can
remain in the finished material. Knowledge of these materials is indispensable for the
toxicological evaluation of the plastics and their analysis . The same applies for the
many chemically different additives which are incorporated into the plastic matrix to
allow better processing, increase stability and to give the material specific properties.
2. The rate of migration of low molecular weight residual molecules from plastics
into foods and interactions of the plastics with food components or other filled products
depends on the molecular structure and the macroscopic (aggregate) nature of
the plastic material. In order to perform useful estimations of mass transfers, for
example from plastics to food, a basic knowledge of the structure of the plastic . I ask for scientists and researchers to study and look in deep for how can we evaluate the risk and what is good safe materials for packaging.
I HOPE IT HELPFUL TO YOU
weight substances are included under the term plastic. A high molecular weight
material is considered to be that containing more than 1000 atoms. Plastics are a 20th
century discovery, the first plastics being derived from high molecular weight natural
raw materials, e.g. regenerated cellulose (cellophane) from cellulose around 1910.
Plastics were first seen as replacements for natural raw materials during times of
shortage , e.g. synthetic rubber during the first world war. However, since the second
world war a new class of useful materials has been developed whose properties can be
tailored through control of their syntheses to fit every desired application. With a
yearly production of nearly 100 million tons, plastics form a pillar of the economy
without which today’s standard of living would not be attainable.
The importance of plastics is attested by the abundance of scientific and technical
literature on the subject. For several reasons the following discussion on the manufacture,
structure and properties of plastics is necessarily a brief introduction to the subject
as found in the literature:
1. Measurable residual amounts or conversion products from the many different
raw materials and processing aids used in the various plastic synthesis processes can
remain in the finished material. Knowledge of these materials is indispensable for the
toxicological evaluation of the plastics and their analysis . The same applies for the
many chemically different additives which are incorporated into the plastic matrix to
allow better processing, increase stability and to give the material specific properties.
2. The rate of migration of low molecular weight residual molecules from plastics
into foods and interactions of the plastics with food components or other filled products
depends on the molecular structure and the macroscopic (aggregate) nature of
the plastic material. In order to perform useful estimations of mass transfers, for
example from plastics to food, a basic knowledge of the structure of the plastic . I ask for scientists and researchers to study and look in deep for how can we evaluate the risk and what is good safe materials for packaging.
I HOPE IT HELPFUL TO YOU
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