Rigid polymeric beverage bottles with improved resistance to per

Details Rigid polymeric beverage bottles with improved resistance to per Rigid polymeric beverage bottles with improved resistance to per

1997-09-16

1998-11-17

Szekely, Peter A.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 354, 428 367, 428483, 428518, 428520, 428522, 215 121, 215 122, 215456, 215457, 215458, 524 48, B65D 2302, C08L 516, B29D 2200, B29D 2300

Patent

active

058373390

ABSTRACT:
Carbonated beverages can have a substantially reduced concentration of water soluble materials derived from biaxially oriented thermoformed beverage containers. Such containers can comprise a permeant barrier and an active trap for water soluble materials that can be removed from the thermoplastic by extraction into the carbonated beverage. The improved container material comprises a blow molded thermoplastic polyester web comprising a compatible modified cyclodextrin material having pendent moieties or substituents that render the cyclodextrin material compatible with the container thermoplastic. The cyclodextrin material, after it is added to the polymer material, acts as a barrier and to trap extractable materials as they permeate through the thermoplastic polyester. The cyclodextrin molecule has a large center cavity having properties that increase the likelihood that organic molecules will be absorbed and trapped in the center pore. The resulting polyester is substantially resistant to any extraction of soluble materials from the polyester material by the carbonated beverage.

REFERENCES:
patent: 5177129 (1993-01-01), Bobo, Jr.

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