Polyesters bottles from

In the Q-box system introduced by Mead packaging for hot-filling high-acid juices, a web made of LDPE, paperboard, ionomer, foil, polyester, and LDPE is used. Products are pasteruized at 90°C before filling. Also used for high-acid products, is an oriented polyester bottle from Monsanto Company. 

Noncrystalline aromatic polycarbonates (qv) and polyesters (polyarylates) and alloys of polycarbonate with other thermoplastics are considered elsewhere, as are aliphatic polyesters derived from natural or biological sources such as poly(3-hydroxybutyrate), poly (glyc olide), or poly (lac tide) these, too, are separately covered (see Polymers, environmentally degradable Sutures). Thermoplastic elastomers derived from poly(ester—ether) block copolymers such as PBT/PTMEG-T [82662-36-0] and known by commercial names such as Hytrel and Riteflex are included here in the section on p oly (butylene terephthalate). Specific polymers are dealt with largely in order of volume, which puts PET first by virtue of its enormous market volume in bottle resin. 

D. Keser, Processing Lines for Production of Polyester Fiber from Recycled Bottles, International Fiber Journal (June 1995), pp. 4-12. 

Aromatic Polyester Polyols from Polyethylene Terephthalate Wastes (Bottles, Films, Fibres) [12-24]... 

In 1993, collaboration between Patagonia and Malden Mills (now Polartec) led to the early development of recycled polyester fibre (from Wellman Inc.) for use in Synchilla fleece made from plastic soda bottles that diverted waste from landfills. Later, PCR filament yam was made for linings and shell fabrics from 30% to 50% post-consumer materials (bottles, polyester uniforms, tents and garments) with the remainder sourced from post-industrial waste. Clothes, at end of life, if constituted from one fibre type, can be recyclable. In theory, consumers may return a polyester garment to be forwarded to a processor to be re-made into fibre or downgraded to other forms of plastic. 

Macrosorting. Examples of macrosorting processes include separation of PVC bottles from PET bottles, separation of polyester carpet from... 

PHB has many physical properties in common with poly(propylene), and a PHB-PHV copolymer (BIOPOL) has recently been used to manufacture plastic shampoo bottles. PHB-PHV is of special interest because it is biodegradable. Since it is a naturally occurring polymer, it is easily degraded by enzymes produced by soil microorganisms and therefore does not persist in the environment after disposal. Other biodegradable polymers, such as polyesters derived from e-caprolactone and lactic acid, are also known and have been commercialized. Although it remains to be seen how widespread the use of biodegradable plastics will become, research and development of these materials is sure to continue as we try to deal with contemporary environmental issues. ... 

One well-known example of a process to recycle a single polymer system is the manufacture of polyester fibres from polyester drinks bottles. It creates an open material cycle. 

With the increasing need to reduce cost and achieve sustainability, there has been a growth in interest in using recycled fibers, eg, from polyester bottles. 

Condensation (or step-growth) pol3oners are formed by reacting difunctional molecules, usually with the elimination of water. One example is the formation of polyethylene terephthalate (the polyester used for Terylene and Dacron fibres and transparent films and bottles) from ethylene glycol and terephthalic acid ... 

Poly(butylene succinate) (PBS) is an aliphatic polyester produced from petroleum products. PBS can be used to produce biodegradable sheets, film, bottles, and molded products. PBS can be blended with PLA, PHA, and TPS (Tan et al. 2010 Xu and Guo 2010). 

Many other polymers compete with cellophane such as polyethylene which is extruded as a tough film or in greater thickness as a nonbreakable bottles. Vinyl products used in films are polystyrene, polyesters, and nylon. A chemical derivative from nature rubber, chlorinated rubber, gives films of extraordinary stretch ability. 

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