Package making – Methods – With contents treating
Patent
1981-12-23
1984-09-04
Culver, Horace M.
Package making
Methods
With contents treating
53472, 53127, 206542, 206545, B65B 6308
Patent
active
044689136
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a method of conditioning and to a box for the implementation thereof.
More precisely, the present invention relates to the conditioning of products which must be stored under determined temperature conditions, generally different from the conditions of the environment, for example for preservation reasons, as is the case for some fresh food products or vaccines which must be preserved at a temperature below a determined temperature threshold whatever the temperature conditions of the environment during their transport or storage outside cold rooms.
For transporting or storing such products which are liable to be damaged by a rise in temperature outside cold rooms, or for transporting or storing products which are liable to be damaged by a drop in temperature, it is known to position these products inside a thermally insulated enclosure and to surround them within this enclosure with respectively heat or cold accumulating elements (hereinafter referred to generically as "accumulating elements") which have previously been brought to a predetermined temperature required by the nature of the product, the thermal insulation characteristics of the enclosure, the ambient temperature conditions to which it will be submitted once outside and the desired preservation time.
Unfortunately, in the present prior art, if such a method of conditioning may be completely satisfactory when it is a matter of packing inside an enclosure a small number of objects which only necessitate the enclosure being kept open for a short time and offer the opportunity of rationally positioning respectively heat or cold accumulating elements, i.e., generally positioning these elements along the insulating walls of the enclosure in order to produce a respectively cold or hot barrier at this level, the same does not hold true when a large number of individualised products, for example, ampoules of vaccine have to be conditioned within the same enclosure.
In fact, in this case, the known conditioning technique comprises arbitrarily distributing cold accumulating elements (in the case of vaccines or serums), which have been brought to the required temperature between the products as they are positioned inside the enclosure which is kept open.
On the one hand, the fact that the conditioning of such products requires keeping the enclosure open for a considerable length of time means that the cold accumulating elements which are positioned as conditioning proceeds lose some of their coldness before the enclosure is closed, which renders them inefficient and means that they have to be overdimensioned or increased in number, without for all that the guarantee of complete efficiency, notably concerning the first elements positioned inside the enclosure.
On the other hand, the random distribution of the cold accumulating elements in the midst of the conditioned products gives rise to temperature heterogeneities inside the enclosure, and gives rise notably to relatively hot points where the temperature may exceed the maximum temperature threshold which the product to be conditioned cannot exceed without being damaged. Thus, prudence also requires the accumulating elements to be overdimensioned or for an excessive number thereof to be provided.
Of course, the same disadvantages are established when such products are conditioned by this conventional method, the temperature of which products must not fall below a determined threshold, in the presence of heat accumulating elements.
In one or other case, the accumulating elements have to be overdimensioned or increased in number, i.e., the useful capacity of the enclosure has to be reduced, and this means reducing the quantity of conditioned product within an enclosure of determined internal dimensions.
In the particular case of conditioning serum or vaccine ampoules in the presence of cold accumulating elements distributed between these ampoules, a further disadvantage is established in that there is a risk of the cold accumulating elements being perforated, these elements genera
REFERENCES:
patent: 2302639 (1942-11-01), Moore
patent: 2393245 (1946-01-01), Hadsell
patent: 2897641 (1959-08-01), Simon et al.
patent: 3182884 (1965-05-01), Waldron
patent: 3204385 (1965-09-01), De Remer et al.
patent: 3733768 (1973-05-01), Carls et al.
Guillon Claude R.
Schwarz Annick
Culver Horace M.
Sofrigam
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