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Wilson Jones Resource Foam Polypropylene Ring Binder, Durable Hinge, 1 Inch Capacity, Letter Size, Green (W38204)

Wilson Jones is a leading source of reliable, quality products that help consumers work faster, smarter and better at the office, home, or at school. Whether you are a corporate professional, a home-based entrepreneur, a business traveler, a student, or a head of a busy household, there are Wilson Jones products to fit your every specific need. Wilson Jones Resource Durable Round Ring Binders are eco-friendly without compromising style. They are 100 percent recyclable (where facilities are available), encouraging you to be part of the cycle. Recycle this binder after it has lived its life and help keep the circle going. Wilson Jones Resource Durable Round Ring Binders are more earth-friendly than standard vinyl because they are PVC-free. Made of durable foam polypropylene, each binder also features a durable hinge for added strength. An open and close trigger make it easy to add or remove sheets while the interior front pocket provides additional document storage plus a business card slot. With an extensive and innovative selection and quality materials, Wilson Jones provides everything you need to become virtually unstoppable in today's fast-paced work and school environments.

Plastic is the general common term for a wide range of synthetic or semisynthetic organic amorphous solid materials used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce costs. Monomers of Plastic are either natural or synthetic organic compounds.

The word is derived from the Greek ????????? (plastikos) meaning fit for molding, and ??????? (plastos) meaning molded. It refers to their malleability, or plasticity during manufacture, that allows them to be cast, pressed, or extruded into a variety of shapes—such as films, fibers, plates, tubes, bottles, boxes, and much more.

The common word plastic should not be confused with the technical adjective plastic, which is applied to any material which undergoes a permanent change of shape (plastic deformation) when strained beyond a certain point. Aluminium, for instance, is plastic in this sense, but not a plastic in the common sense; in contrast, in their finished forms, some plastics will break before deforming and therefore are not plastic in the technical sense.

There are two types of plastics: thermoplastics and thermosetting polymers. Thermoplastics will soften and melt if enough heat is applied; examples are polyethylene, polystyrene, polyvinyl chloride and polytetrafluoroethylene (PTFE). Thermosets can melt and take shape once; after they have solidified, they

Plastics can be classified by chemical structure, namely the molecular units that make up the polymer's backbone and side chains. Some important groups in these classifications are the acrylics, polyesters, silicones, polyurethanes, and halogenated plastics. Plastics can also be classified by the chemical process used in their synthesis, such as condensation, polyaddition, and cross-linking.

Other classifications are based on qualities that are relevant for manufacturing or product design. Examples of such classes are the thermoplastic and thermoset, elastomer, structural, biodegradable, and electrically conductive. Plastics can also be classified by various physical properties, such as density, tensile strength, glass transition temperature, and resistance to various chemical products.

Due to their relatively low cost, ease of manufacture, versatility, and imperviousness to water, plastics are used in an enormous and expanding range of products, from paper clips to spaceships. They have already displaced many traditional materials, such as wood; stone; horn and bone; leather; paper; metal; glass; and ceramic, in most of their former uses.

The use of plastics is constrained chiefly by their organic chemistry, which seriously limits their hardness, density, and their ability to resist heat, organic solvents, oxidation, and ionizing radiation. In particular, most plastics will melt or decompose when heated to a few hundred degrees celsius. While plastics can be made electrically conductive to some extent, they are still no match for metals like copper or aluminium.[citation needed] Plastics are still too expensive to replace wood, concrete and ceramic in bulky items like ordinary buildings, bridges, dams, pavement, and railroad ties.

Chemical structure
Common thermoplastics range from 20,000 to 500,000 in molecular mass, while thermosets are assumed to have infinite molecular weight. These chains are made up of many repeating molecular units, known as repeat units, derived from monomers; each polymer chain will have several thousand repeating units. The vast majority of plastics are composed of polymers of carbon and hydrogen alone or with oxygen, nitrogen, chlorine or sulfur in the backbone. (Some of commercial interests are silicon based.) The backbone is that part of the chain on the main "path" linking a large number of repeat units together. To customize the properties of a plastic, different molecular groups "hang" from the backbone (usually they are "hung" as part of the monomers before linking monomers together to form the polymer chain). This fine tuning of the properties of the polymer by repeating unit's molecular structure has allowed plastics to become such an indispensable part of twenty first-century world.

Some plastics are partially crystalline and partially amorphous in molecular structure, giving them both a melting point (the temperature at which the attractive intermolecular forces are overcome) and one or more glass transitions (temperatures above which the extent of localized molecular flexibility is substantially increased). The so-called semi-crystalline plastics include polyethylene, polypropylene, poly (vinyl chloride), polyamides (nylons), polyesters and some polyurethanes. Many plastics are completely amorphous, such as polystyrene and its copolymers, poly (methyl methacrylate), and all thermosets

History
The first human-made plastic was invented by Alexander Parkes in 1855 ; he called this plastic Parkesine (later

Back in the early 1980s, polypropylene made its debut as a fiber for making wicking underwear. This was an stupendous advancement over cotton fishnet undershirts. Polypropylene clothing wicked sweat and rain, and snow that melted on one's body, away from the surface of the skin, keeping a person relatively dry. Even when the fabric was soaking wet, it kept a person from getting cold---a miracle!

This is the first wicking shirt I owned and I loved it. But it had one annoying drawback: it lacked a raised collar, so when a blob of snow fell off a tree onto my head or shoulder, some of the snow went down my back inside the shirt---an ugly feeling. Zippered-turtleneck shirts came a bit later to solve that problem. I've heard that polypropylene tended to retain body odor, but no one I hiked with died of odor poisoning. Eventually polyester fibers took over the market, which relegated polypropylene to the status of oddity. This shirt was given away.

Polypropylene is what most water ski tow ropes are made of.

Crystal clear overlay enhances custom inserts on front cover, back cover and spine. Nonstick, archival-safe material won't lift ink or toner off of printed pages. One Touch mechanism lets you open, close and lock your binder in one easy step. Easy Insert feature helps you place and remove personalized spine inserts quickly and easily. Gap Free feature prevents ring misalignment so pages turn smoothly. Locking EZD ring holds up to 50% more than same size round rings (20% more than slant rings). Back-mounted rings allow pages to lie flat. Four inside pockets store unbound materials for improved organization. Wider front and back binder panels fully cover standard dividers and sheet protectors. Exposed rivets on spine.