The industry is very optimistic about the prospects of biodegradable plastics. However, due to their limited performance, process capability, and high cost constraints, these plastics still do not have sufficient commercial value. Since the 1990s, industry giants such as Bayer, Dupont, and Dow have developed new technologies in this area, which have brought new hopes to overcome the shortage of biodegradable plastics. Professionals point out that some of the requirements imposed on biodegradable plastics are contradictory. For example, in order for a composting plant to function properly, the plastic must completely degrade within three months and be able to form a compost. The basic biodegradable material must be environmentally friendly and the degraded product must not constitute any ecological hazard. However, this kind of plastic must be stable in storage during work, its processing process is easy to operate, and its price is low, which shows that its technical difficulty is very high. Although these requirements have led to a slow pace of development in this area, a number of new and more promising new technologies and materials have emerged since the 1990s. One of the new developments in biodegradation is the synthesis of synthetic polyesters or poly lyh yo lroxy acids. They can be made from a variety of alpha hydroxy acids, including lactic acid and glycolic acid. Corgil Polymers, which is composed of Cadgill and Dow at the end of last year, introduced a new lactic lac fic ac id îž„PLAS degrading polymer belonging to the above series. It is said that all of the PZA resins are made from renewable agricultural raw materials, such as corn. They are converted into sugars via starch and fermented, dehydrated to form lactic acid chains, and finally PZA resin is formed. Similar to polystyrol, PZA polymer is a highly transparent material with good handling properties and resistance to water dissolution. They are suitable for most thermoforming processes and can use conventional processing equipment, including sheet and film extrusion, blown film manufacture, fiber drawing, and injection molding. The company believes that the new PZA polymer will be successful in competing with some of the carbon-based polymers (such as polyethylene, polyester, polypropylene) in terms of cost and performance. Current commercial applications of this PZA polymer include: compostable food bags and "garbage" bags, yoghurt packaging cartons, sowing mats, and non-woven coverings to prevent weed growth. This polymer is currently being produced at the existing PZA plant in the United States, with a capacity of 7,200 tons at the end of this year. Another new commercial plant with an annual capacity of 140,000 tons is expected to be put into operation next year. Although this PZA resin has emerged in the market, it is still limited to the demand for biodegradation. To this end, the company is expanding its collaboration with other consumers in an effort to expand its application area. Because it has good price and performance potential compared with PET, it can also provide excellent adhesive properties and gloss characteristics, and has good metallization characteristics, the company is full of confidence in further expanding the market.
A floating shelf is a form of shelf with its wall fixings hidden within the shelf board, with no visible supporting brackets. It can be supported on hidden rods or bars that have been attached to studs. A thick floating shelf may be made of a hollow-core shelf glued to a cleat. A floating shelf may have two or more channels open from the back towards, but without reaching, the front, into which slide fasteners attached to the wall, typically held in place by screws inserted through the bottom of the shelf.
For typical floating shelf supports, a supplier suggests that floating brackets with a diameter of 12mm can support a shelf at least 22mm thick loaded with 20kg, and 18mm brackets can support 30kg on a 28mm shelf. This description is in reference to one particular type of floating shelf support, others options are available. Also not to be confused with corner shelves, which would require entirely different supports to make them "float".
Floating shelves are a good fit for a contemporary minimalist style interior.They can be used to expand storage space, atop a radiator to double as storage, or inside a hallway to double as a console table.
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