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1. (WO1997018995) A METHOD AND AN APPARATUS FOR CALIBRATING PACKAGING CONTAINERS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018995 International Application No.: PCT/SE1996/001420
Publication Date: 29.05.1997 International Filing Date: 05.11.1996
Chapter 2 Demand Filed: 14.05.1997
IPC:
B65B 61/24 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
B
MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
61
Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
24
for shaping or reshaping completed packages
Applicants:
TETRA LAVAL HOLDINGS & FINANCE S.A. [CH/CH]; 70, avenue Général-Guisan CH-1009 Pully, CH (AllExceptUS)
PALM, Lars-Erik [SE/SE]; SE (UsOnly)
Inventors:
PALM, Lars-Erik; SE
Agent:
BENTZ, Christer; AB Tetra Pak Ruben Rausings gata S-221 86 Lund, SE
Priority Data:
9504127-320.11.1995SE
Title (EN) A METHOD AND AN APPARATUS FOR CALIBRATING PACKAGING CONTAINERS
(FR) PROCEDE ET APPAREIL DE CALIBRAGE DE RECIPIENTS D'EMBALLAGE
Abstract:
(EN) Packaging containers for liquid contents, for example milk, are normally manufactured from laminated packaging material including a carrier or core layer of fibre material which is coated on each side with plastic layers. In order to facilitate folding of the material, this is normally provided with a pattern of weakening crease lines which facilitate the reforming into the desired packaging container configuration. A method of retroforming or calibrating a packaging container for realising more accurate final configuration, sharper fold lines and thereby for imparting to the packaging container improved steadiness and stability comprises the steps of surrounding the packaging container (1) with a forming device (11) adapted to the final configuration of the packaging container, and of displacing parts (12, 13) of the forming device towards one another so that the free space for the packaging container is briefly reduced. An apparatus for carrying the method according to the present invention into effect comprises a forming device (11) with moving forming parts which, in the closed position, define a forming cavity of a volume which amounts to between 100 and 110 per cent of the theoretical minimum volume of a processed packaging container.
(FR) Les récipients d'emballage de liquides tels que le lait sont normalement fabriqués à partir d'un matériau laminé comprenant un support ou substrat revêtu de films de plastique sur ses deux faces. Pour en faciliter le pliage, il est normalement marqué d'un réseau de lignes de moindre résistance qui permettent d'obtenir plus facilement la forme de l'emballage souhaité. Le procédé objet de l'invention permet de rétroformer ou de calibrer un tel emballage pour réaliser une configuration finale plus précise, et des lignes de pliage plus fines, et finalement obtenir plus de stabilité et de rigidité. Ledit procédé consiste à entourer le récipient (1) d'un moule (11) délimitant ses contours définitifs, puis à déplacer les pièces (12, 13) constituant le moule les unes vers les autres de manière à réduire un instant l'espace libre alloué au récipient. L'invention porte également sur un appareil de mise en oeuvre du procédé comportant un moule (11) muni d'éléments de moulage qui, en position de fermeture, délimitent une cavité d'un volume atteignant entre 100 et 110 % du volume théorique minimal du récipient fini.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
TR1998/00881EP0869903KE1996000079RU02165876US6076335JP2000501051
CN1202139DE000069619134KR1019990067602AU1996076587