Crown corks

Another variable is the type of food in contact with the active or intelligent packaging. Here there may be liquid contact (e.g. for an oxygen-scavenging crown cork for beer), dry contact (e.g. a preservative releaser for buns) or semi-solid contact (e.g. an oxygen scavenger for processed ham). 

Carbide and Carbon Chemicals Corp. Linde Air Products Co. Foote Mineral Co. Dow Chemical Co. Borden Co. Crown Cork Seal Co. Koppers Co. Foster D. Snell, Inc. Minnesota Mining Mfg. Co. Solvay Sales Div. National Distillers Co. Hercules Powder Co. Mathieson Chemical Corp. Philadelphia Quartz Co. Meflford Chemical Co. 

Clinch-on applies a simultaneous bending action over the total circumference of a skirt. Crimped-on applies both flutes and a bending action in the case of closures—the prime example is a crown cork closure invented by W.Painter of Baltimore in 1882. The word crimped is frequently misused when clinched is correct. Rolled-on and spun-on use wheels to bend in a... 

The crown closure machine (crowner or capper are alternative names) is placed close to the filler. It is charged with crown corks and these closures are delivered one by one from a slide. The bottle is raised to the crown cork and pressure is applied to the top of the crown in order to seal the liner to the bottle, then the crimped edges of the closure are pressed tightly over the top of the bottle. In many cases the crowns are jetted with a blast of air to remove foreign matter from inside the closure, especially chips of lacquer and cork dust in the case of closures with cork seals. The crown is made of steel, coated with resin or enamel, and the seal embedded in it is either cork or plastic. In some cases the cork is partly covered by a plastic or aluminium disc. 

Crown corks are transferred magnetically in modem closing machines. Older systems often used pressurized air to transfer the crown corks to the closing element. From a microbiological perspective, the use of pressurized air is not preferable. The use of pressurized air for the crown cork transport leads to possible swirling and aerosol formation. Especially with product residues caused by overfoaming, the risk of contamination is elevated. 

Peelable adhesives Petroleum resin Japan 67,452 1980 Japan Crown Cork... 

Carpco has several electrostatic plastic separation systems in place in the U.S.A. and Europe. One system used at Nationwide Recycling Division of Crown Cork and Seal in PoUcton, NC, separates PVC from PET bottle flake at a rate of 1500 Ib/hr. Electrostatic separation can even be used to separate epoxy-painted thermoplastic olefin automobile... 

Similar comments apply to crown cork adhesives. These are used in crown cork closures to secure the thin layer of cork to the waxed paper in contact with the liquid or the metal cap. Formulation XI is typical of the material... 

Crown Cork and Seal Company Inc www.crowncork.com 6.8 Americas... 

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