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1. WO2000038992 - PROCESS FOR PACKAGING HIGH PROFILE PRODUCTS IN A MODIFIED ATMOSPHERE WITH AN UPWARDLY FORMED HEAT SHRINKABLE FILM

Publication Number WO/2000/038992
Publication Date 06.07.2000
International Application No. PCT/US1999/029124
International Filing Date 08.12.1999
Chapter 2 Demand Filed 20.07.2000
IPC
B65B 31/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
31Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
02Filling, closing, or filling and closing, containers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
CPC
B65B 31/025
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
31Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
02Filling, closing, or filling and closing, containers ; or wrappers; in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
025specially adapted for rigid or semi-rigid containers
Applicants
  • CRYOVAC, INC. [US/US]; P.O. Box 464 100 Rogers Bridge Road Duncan, SC 29334, US (AllExceptUS)
  • STOCKLEX, H., Walker, III [US/US]; US (UsOnly)
Inventors
  • STOCKLEX, H., Walker, III; US
Agents
  • LAGALY, Thomas ; Cryovac, Inc. P.O. Box 464 100 Rogers Bridge Road Duncan, SC 29334, US
Priority Data
09/220,27023.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR PACKAGING HIGH PROFILE PRODUCTS IN A MODIFIED ATMOSPHERE WITH AN UPWARDLY FORMED HEAT SHRINKABLE FILM
(FR) PROCESSUS D'EMBALLAGE EN ATMOSPHERE MODIFIEE DE PRODUITS A FORTE EPAISSEUR A L'AIDE D'UNE PELLICULE THERMORETRACTABLE FORMEE VERS LE HAUT
Abstract
(EN)
A packaging process is disclosed which includes the steps of providing a tray, providing an upper film which includes a sealant layer which is sealable to the tray, orienting the film to an orientation ratio of from about 6.0:1 to about 16.0:1, positioning a high profile product on the tray, extending the upper film above the tray and product, drawing the upper film into a concavity by differential pressure, maintaining the concave shape of the upper film while heating the film, removing gases from the space between the upper film and the tray and product, introducing a desirable gas into the space, releasing the upper film such that it shrinkis toward the product and the tray while the desirable gas is retained within the space and prevents close contact of the film with the lowermost portions of the product, and sealing the upper film to the flange of the tray, wherein at least the step of heating the film shrinks the film, thereby tensioning it onto and across the underlying product. The resultant package of the high profile product provides an in-store overwrap appearance.
(FR)
L'invention concerne un processus d'emballage consistant à apporter une barquette et une pellicule supérieure comprenant une couche de scellement pouvant être scellée à la barquette, à orienter la pellicule avec un quotient d'orientation compris entre 6,0: 1 et environ 16,0: 1, à placer un produit de forte épaisseur sur la barquette, à étendre la pellicule supérieure au-dessus de la barquette et dudit produit, à attirer ladite pellicule dans une partie concave par pression différentielle, à conserver la forme concave de la pellicule au cours de son chauffage, à éliminer les gaz situés entre la pellicule et l'ensemble barquette-produit, à introduire un gaz souhaité dans cet espace, à libérer la pellicule supérieure de façon à ce qu'elle rétrécisse en direction de la barquette et du produit en retenant le gaz, ce qui prévient tout contact entre la pellicule et les parties inférieures du produit, et à sceller la pellicule au bord de la barquette. Au moins l'étape de chauffage entraîne le rétrécissement de la pellicule, la tendant ainsi au-dessus du produit sous-jacent et donnant à l'emballage final du produit de forte épaisseur un aspect de suremballage effectué en rayon.
Also published as
NZ512447
Latest bibliographic data on file with the International Bureau