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Plastic Cup
A plastic cup is a cup made out of plastic, commonly used as a container to hold beverages. Some are reusable while others are intended for a single use followed by recycling or disposal. Disposable plastic cups are often used for gatherings where it would be inconvenient to wash dishes afterward, due to factors such as location or number of guests. Plastic cups can be used for storing most liquids, but hot liquids may melt or warp the material. A common design in the United States is a red plastic cup, often used for serving alcoholic beverages. Environmental issues Most plastic cups are designed for single uses and then disposal or recycling. A life cycle inventory of a comparison of paper and plastic shows environmental effects of both with no clear winner. Production of of plastic cup emits of green house gases. The choice between paper cups and plastic cups has to do with the life of the item after use. A paper cup may biodegrade faster than a expanded polystyr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petroleum
Petroleum, also known as crude oil or simply oil, is a naturally occurring, yellowish-black liquid chemical mixture found in geological formations, consisting mainly of hydrocarbons. The term ''petroleum'' refers both to naturally occurring unprocessed crude oil, as well as to petroleum products that consist of refining, refined crude oil. Petroleum is a fossil fuel formed over millions of years from anaerobic decay of organic materials from buried prehistoric life, prehistoric organisms, particularly planktons and algae, and 70% of the world's oil deposits were formed during the Mesozoic. Conventional reserves of petroleum are primarily recovered by oil drilling, drilling, which is done after a study of the relevant structural geology, sedimentary basin analysis, analysis of the sedimentary basin, and reservoir characterization, characterization of the petroleum reservoir. There are also unconventional (oil & gas) reservoir, unconventional reserves such as oil sands and oil sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Containers
Liquid is a state of matter with a definite volume but no fixed shape. Liquids adapt to the shape of their container and are nearly incompressible, maintaining their volume even under pressure. The density of a liquid is usually close to that of a solid, and much higher than that of a gas. Therefore, liquid and solid are classified as condensed matter. Meanwhile, since both liquids and gases can flow, they are categorized as fluids. A liquid is composed of atoms or molecules held together by intermolecular bonds of intermediate strength. These forces allow the particles to move around one another while remaining closely packed. In contrast, solids have particles that are tightly bound by strong intermolecular forces, limiting their movement to small vibrations in fixed positions. Gases, on the other hand, consist of widely spaced, freely moving particles with only weak intermolecular forces. As temperature increases, the molecules in a liquid vibrate more intensely, causing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disposable Products
A disposable (also called disposable product) is a product designed for a single use after which it is recycled or is disposed as solid waste. The term is also sometimes used for products that may last several months (e.g. disposable air filters) to distinguish from similar products that last indefinitely (e.g. washable air filters). The word "disposables" is not to be confused with the word "consumables", which is widely used in the mechanical world. For example, welders consider welding rods, tips, nozzles, gas, etc. to be "consumables", as they last only a certain amount of time before needing to be replaced. Consumables are needed for a process to take place, such as inks for printing and welding rods for welding, while disposable products are items that can be discarded after they become damaged or are no longer useful. Terminology "Disposable" is an ''adjective'' that describes something as non-reusable but is disposed of after use. Many people now use the term as a noun o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polylactic Acid
Polylactic acid, also known as poly(lactic acid) or polylactide (PLA), is a plastic material. As a thermoplastic polyester (or polyhydroxyalkanoate) it has the backbone formula or . PLA is formally obtained by condensation of lactic acid with loss of water (hence its name). It can also be prepared by ring-opening polymerization of lactide , the cyclic dimer of the basic repeating unit. Often PLA is blended with other polymers. PLA can be biodegradable or long-lasting, depending on the manufacturing process, additives and copolymers. PLA has become a popular material due to it being economically produced from renewable resources and the possibility to use it for compostable products. In 2022, PLA had the highest consumption volume of any bioplastic of the world, with a share of ca. 26 % of total bioplastic demand. Although its production is growing, PLA is still not as important as traditional commodity polymers like PET or PVC. Its widespread application has been hin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paper Cup
A paper cup is a disposable cup made out of paper and often lined or coated paper, coated with plastic-coated paper, plastic or wax paper, wax to prevent liquid from leaking out or soaking through the paper. Disposable cups in shared environments have become more common for hygienic reasons after the advent of the germ theory of disease. Due mainly to Environmentalism, environmental concerns, modern disposable cups may be made of paper recycling, recycled paper or other inexpensive materials such as Plastic cup, plastic. History Paper cups have been documented in History of China#Ancient China, imperial China, where paper was invented by the 2nd century BC. Paper cups were known as ''chih pei'' and were used for the serving of tea. They were constructed in different sizes and colors, and were adorned with decorative designs. Textual evidence of paper cups appears in a description of the possessions of the Yu family, from the city of Hangzhou. The modern paper cup was developed i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cup Holder
A cup holder is a device, such as a podstakannik (Russian) or zarf (Turkish), to hold a cup or other drinking vessel. It may be free standing to hold cups securely on a desk or other flat surface, or in a tree style to store sets of cups in kitchens. They may be built into automobiles or chairs, or fixed to the walls of airplanes, boats, buses and trains. Automobile cup holder The development of the drive-in restaurant was a step in the cup holder's development. Servers would attach a tray that hooked over the car's side window, which needed to be left up a little for it to attach to. This gave a temporary table to hold drinks and food while eating in the car. The drive-in restaurant and drive-in theater, cinema encouraged the development of built-in tray tables; often, the inside of the glove compartment lid, when folded down, had indentations to hold cups, cans as well as pistachio shells and were found in cars as early as the 1957 Chevrolet Bel Air. These were suffici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coffee Cup
A coffee cup is a cup for serving coffee and List of coffee drinks, coffee-based drinks. There are three major types: conventional cups used with saucers, mugs used without saucers, and disposable cups. Cups and mugs generally have a Handle (grip), handle. Disposable paper cups used for take-out sometimes have fold-out handles, but are more often used with an insulating coffee cup sleeve. Coffee cups and mugs may be made of Ceramic glaze, glazed ceramic, porcelain, plastic, glass, insulated or uninsulated metal, and other materials. In the past, coffee cups have also been made of bone, clay, and wood. Disposable cup, Disposable coffee cups may be made out of paper or expanded polystyrene foam, polystyrene foam (often mistakenly called Styrofoam). History Coffee cups, along with other coffee ware, originated in the Middle East. In the 17th century, coffee was consumed from small handle-less bowls, "Greek cups". The cups were Chinese export porcelain or its Japanese export porcela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Health Hazard
A hazard is a potential source of harm. Substances, events, or circumstances can constitute hazards when their nature would potentially allow them to cause damage to health, life, property, or any other interest of value. The probability of that harm being realized in a specific ''incident'', combined with the magnitude of potential harm, make up its risk. This term is often used synonymously in colloquial speech. Hazards can be classified in several ways which are not mutually exclusive. They can be classified by ''causing actor'' (for example, Natural hazard, natural or Anthropogenic hazard, anthropogenic), by ''physical nature'' (e.g. Biological hazard, biological or Chemical hazard, chemical) or by ''type of damage'' (e.g., health hazard or environmental hazard). Examples of natural disasters with highly harmful impacts on a society are floods, droughts, earthquakes, tropical cyclones, lightning strikes, Volcanism, volcanic activity and wildfires. Technological and anthropogen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polystyrene
Polystyrene (PS) is a synthetic polymer made from monomers of the aromatic hydrocarbon styrene. Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is a poor barrier to air and water vapor and has a relatively low melting point. Polystyrene is one of the most widely used plastics, with the scale of its production being several million tonnes per year. Polystyrene is naturally transparent to visible light, but can be colored with colorants. Uses include protective packaging (such as packing peanuts and optical disc jewel cases), containers, lids, bottles, trays, tumblers, disposable cutlery, in the making of models, and as an alternative material for phonograph records. As a thermoplastic polymer, polystyrene is in a solid (glassy) state at room temperature but flows if heated above about 100 °C, its glass transition temperature. It becomes rigid again when cooled. This te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sustainable Forest Management
Forest management is a branch of forestry concerned with overall administrative, legal, economic, and social aspects, as well as scientific and technical aspects, such as silviculture, forest protection, and forest regulation. This includes management for timber, aesthetics, recreation, urban values, water, wildlife, inland and nearshore fisheries, wood products, plant genetic resources, and other forest resource values. Management objectives can be for conservation, utilisation, or a mixture of the two. Techniques include timber extraction, planting and replanting of different species, building and maintenance of roads and pathways through forests, and preventing fire. Many tools like remote sensing, GIS and photogrammetry modelling have been developed to improve forest inventory and management planning. Scientific research plays a crucial role in helping forest management. For example, climate modeling, biodiversity research, carbon sequestration research, GIS applicati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foam Food Container
A foam food container is a form of disposable food packaging for various foods and beverages, such as processed instant noodles, raw meat from supermarkets, ice cream from ice cream parlors, cooked food from delicatessens or food stalls, or beverages like "coffee to go". They are also commonly used to serve takeout food from restaurants, and are also available by request for diners who wish to take home the remainder of their meal. The foam is a good thermal insulator, making the container easy to carry as well as keeping the food at the temperature it had when filled into the container, whether hot or cold. Construction and composition Foam take-out containers are made from expanded polystyrene (EPS) foam, or another type of polystyrene foam, and produced by injecting the foam into a mold. They are usually white in color, although they may be printed or impressed with a company logo or other message. EPS foam is sometimes incorrectly called Styrofoam as a generic term. Styrof ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
