Package making – Methods – Forming or partial forming a receptacle and subsequent filling
Patent
1988-09-07
1990-06-26
Culver, Horace M.
Package making
Methods
Forming or partial forming a receptacle and subsequent filling
53 51, 53 55, 53503, 53 64, 53559, 53389, 156506, 83946, B65B 4710, B65B 5700, B65B 4112, B65B 4118
Patent
active
049360760
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method of changing or replacing a liquid or semi-liquid product by another for insertion into a succession of thermoplastic receptacles bearing respective decorative and/or informative elements, the method being of the type wherein the decorative and/or informative elements to be fixed on the thermoplastic receptacles are changed when a first product for insertion into a first series of receptacles bearing respective first decorative and/or informative elements is replaced by a second product for insertion in a second series of receptacles bearing different decorative and/or informative elements, said method being implemented in a packaging installation of the type in which thermoplastic receptacles are formed in a thermoplastic strip, the receptacles are filled with a product, closed with respective tops, and the filled and closed receptacles are cut from said thermoplastic strip either in groups or individually.
In a first implementation of this type of prior method, the nature of the product is changed when the tank storing said product is empty, in which case the packaging installation is stopped after flushing out the remainder of the product with a buffer of water into the metering-dispenser, and washing all of the feed ducts and the inside of the metering-dispenser with water. The decoration elements are changed, as is the product in the storage tank, and also in the ducts and in the metering dispenser, prior to restarting thermoforming new receptacles and filling them with this other product and then closing said new receptacles provided with at least one decorative and/or figurative element taken from a different supply reel. In another implementation of the prior type of method, two storage tanks are provided, containing respective products of differing nature or taste, said tanks are both connected via parallel-connected ducts and individual stop valves to a common feed duct leading to a product metering-dispenser. The first product ceases to be taken from the first storage tank and the remainder of the product contained in the feed duct is urged towards and into the metering-dispenser by means of a buffer of water, the operation of the packaging installation is halted, the parallel-connected ducts, the common feed duct, and the metering-dispenser are washed with water, the reel(s) for storing decorative or informative strip(s) are replaced by other reel(s) for storing other decorative or informative strip(s) and the free end(s) thereof is/are inserted into the system for guiding and placing said strip(s) or elements taken from said strip(s) upon the receptacles, and the packaging installation is restarted prior to inserting the second product contained in the second storage tank into the common feed duct and into the metering-dispenser.
There exist several variants of this above-mentioned type of prior method.
The main drawbacks inherent to this type of method are lack of flexibility in operation, loss of product and of packaging and decorating materials, and loss of time when changing from one product to another and/or from one decoration or information material to another, given that the decoration and/or information material may apply equally well to the labels which cover at least a portion of the receptacle side walls, and to the tops which close said receptacles.
The object of the present invention is to avoid the above-mentioned drawbacks and to provide a method which allows the product being put into the receptacles to be changed simultaneously with changing the decorative and/or informative elements, without stopping operation of the packaging installation and practically without losing any product and/or packaging material, including any decorative and/or informative elements.
In a packaging installation of the type which comprises the following going from upstream to downstream in a station supporting a reel of thermoplastic strip from which the receptacles are to be formed: a heating station for raising the thermoplastic strip to its thermoforming
REFERENCES:
patent: 3757619 (1973-09-01), Gianese
patent: 3971192 (1976-07-01), Soukup et al.
patent: 4017247 (1977-04-01), Soukup et al.
patent: 4018028 (1977-04-01), Donnet
patent: 4331301 (1982-05-01), Martinez
patent: 4467589 (1984-08-01), Van Maanen
patent: 4541221 (1985-09-01), Seragnoli
patent: 4565052 (1986-01-01), Hautemont
patent: 4774796 (1988-10-01), Aiuola et al.
patent: 4800705 (1989-01-01), Bodolay
Culver Horace M.
Etude et Realisation de Chaines Automatiques -ERCA
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