Ethylene vinyl alcohol (EVOH) is similar to EVA. It is also a copolymer of polyethylene with a percentage of vinyl comonomer along the main branch. In fact, EVOH arises from the conversion of VA units along EVA branches into vinyl alcohol (VOH) units. Depending on the conversion percentage of VA to VOH, different types of […]
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Ethylene vinyl acetate (EVA) is a copolymer of polyethylene that is chemically similar to PE, except that EVA has some vinyl acetate (VA) branched or branched. Usually between 5 and 20% VA is added to PE, depending on the desired properties. VA causes adhesion or polarity of the polymer, which leads to greater compatibility of […]
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Colored materials
Dyes are perhaps the most common additives used in the plastics industry, and it is the variety of colors available that makes products attractive to customers. Although dyes are primarily used for beauty, they also have other benefits, such as the ability to absorb ultraviolet light by soot. Dyes are used in a variety of […]
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Reinforcing materials
This type of additive has many overlapping properties; Certain materials, such as glass, may be used as a reinforcer in one case and as a filler in another. Amplifiers are commonly known as additives that increase mechanical properties (such as tensile strength). Fillers are additives that add volume to the polymer and are commonly used […]
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Linear low density polyethylene
Low linear density polyethylene (LLDPE) is a branch of HDPE that is synthesized in a similar way, except that LLDPE contains higher grade monomers such as hexane or octane. Bonding of commonomers in a chain creates short-chain branches that have a certain length. By controlling the number of chain nodes through the commonomer type, the […]
High density polyethylene (HDPE) is synthesized in a very different way compared to LDPE granules. Thus linear chains are created. In fact, HDPE is generally the result of polymerization with a small amount of comonomers, which ultimately forms a series of short-chain branches that are mainly aligned with the main chain to produce a polymer […]
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Low density polyethylene
Polyethylene is often classified based on density. Density is the mass per unit volume. As each polymer changes from a molten solid to a solid, a number of chains may be arranged in much more regular order. This happens to molecules that have long, repetitive parts. Crystallization does not occur in parts with irregular patterns, […]
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Polyurethane
Polyurethane (PU) is a versatile material with a wide range of properties, depending on the chemistry of its various types. The types of polyurethanes used in the blown film industry are thermoplastic (TPU), aromatic or alpha. Alphatics are much more expensive than others, but are generally more resistant to ultraviolet radiation and more environmentally friendly. […]
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