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Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be molded, extruded or pressed into solid objects of various shapes. This adaptability, plus a wide range of other properties, such as being lightweight, durable, flexible, and inexpensive ...
A thermoplastic, or thermosoftening plastic, is any plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling. [ 1][ 2] Most thermoplastics have a high molecular weight. The polymer chains associate by intermolecular forces, which weaken rapidly with increased temperature, yielding a ...
Polyethylene or polythene (abbreviated PE; IUPAC name polyethene or poly (methylene)) is the most commonly produced plastic. [7] It is a polymer, primarily used for packaging ( plastic bags, plastic films, geomembranes and containers including bottles, etc.).
The availability of sheet polypropylene has provided an opportunity for the use of the material by designers. The light-weight, durable, and colorful plastic makes an ideal medium for the creation of light shades, and a number of designs have been developed using interlocking sections to create elaborate designs.
Sustainable packaging is the development and use of packaging which results in improved sustainability. [2] This involves increased use of life cycle inventory (LCI) and life cycle assessment (LCA) [3] [4] to help guide the use of packaging which reduces the environmental impact and ecological footprint. It includes a look at the whole of the ...
Reusable packaging is manufactured of durable materials and is specifically designed for multiple trips and extended life. A reusable package or container is "designed for reuse without impairment of its protective function." [1] The term returnable is sometimes used interchangeably but it can also include returning packages or components for ...
Thulin's design produced a simple, strong bag with a high load-carrying capacity, and was patented worldwide by Celloplast in 1965. As his son Raoul said later, Sten believed that durable plastic bags will be not single-used but long-term used and could replace paper bags which need chopping of trees. [11] [12]
They are durable, knock-and scratch resistant with excellent weatherability. They do not rot or corrode. Plastics are easy to install; many have a snap-fit kind of jointing procedures. Plastics offer limitless possibilities in design achieved by extrusion, bending, moulding etc. They can be given any range of colours by adding pigments.
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