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Information @ a Glance

  • The ancestors of modern closures were a mixed group. They included corn cob plugs, glass stoppers and seals made from braided glass. By keeping food supplies safe, closures helped explorers like Columbus make great voyages. A plastic is a type of synthetic or man-made polymer; similar in many ways to natural resins found in trees and other plants.
  • Plastics are macromolecules, formed by Polymerization and having the ability to be shaped by the application of reasonable amount of heat and pressure or some other form of force. There are mainly two types of Plastics: Thermoplastics and Thermosetting Plastics. majority of the most commonly used plastics (commodity plastics) are derived from these chemicals : Ethylene, Propylene, Butadiene, Benzene.

Manufacturing Process

  • The plastic manufacturing process begins by heating the hydrocarbons in a "cracking process." When plastics emerge from reactors, they do not have the desired properties that make it a material of choice, that is, it is considered a raw material. A Thermoplastic is a polymer in which the molecules are held together by weak secondary bonding forces that soften when exposed to heat and return to its original condition when cooled back down to room temperature.
  •  Most of the plastics recycled are from the commercial and industrial sectors, with bottles being recovered from domestic sources. Mechanical recycling is where the plastics, which soften on heating, are, reformed into moulding granules to make new products. The process involves collection, sorting, baling then size reduction into flake (film and sheet) or granules which may then need washing and drying.

Application & Technology

  • Certain plastics are attractive materials for use in glazing and lighting applications because of their light weight, ease of handling and installation, high light transmission and better shatter resistance than glass. Although plastic glazing is usually more costly initially than glass, repeated replacement of glass with break-resistant plastic glazing makes it more economical and safer.
  • Using INTELLISPEC's proven inspection capability and patented CHROMAPULSE illumination technology, this new system detects and rejects out-of-tolerance closures before they cause filler downtime. Out-of-round caps, and caps with defects on the seal surface, tamper band, threads, liner, or with flash defects are removed from the production stream prior to entering the filler.
  • The closed vial body is made of COC, a plastic that has already been used to contain parenteral drugs (e.g., the COC prefilled syringe) and that provides excellent resistance, minimized transmission rates for water and various gases, and excellent optical performance. CSP Technologies introduces a new class of plastic materials that enables a virtually unlimited number of new products. This enabling technology creates a system of plastic materials that absorbs and/or releases small molecules at a controlled rate.


  • A highly profitable closure designer and mould maker for plastic closures for the liquid refreshment beverage sector, grew out of one company who is, well-known tool/mould maker in North Switzerland. It is the world leading company for liquid refreshment beverages plastic closures design, mould development and mould manufacturing with a world market share of 20%.
  • An estimation says that as many as 200 companies could move out of closure production in Western Europe over the next five years in an already consolidated industry. The leading 10 companies accounted for about 60 per cent of the market in 2004 and the top 25Â account for about 75 per cent. . Plastic closure production is already highly consolidated, with 465 companies involved in making injection or compression moulding plastic closures

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