Flexible bags – With closure – Gathered bag mouth
Patent
1988-02-18
1989-08-08
Garbe, Stephen P.
Flexible bags
With closure
Gathered bag mouth
62530, 383110, B65D 3008, B65D 8138
Patent
active
048547360
DESCRIPTION:
BRIEF SUMMARY
This invention relates to carry bags to transport and maintain goods which are initially above or below ambient temperature at or close to their initial temperature.
In the past one form of insulated container for the above purpose has had a rigid physical form and the heated or chilled goods to be transported have been placed in the container and a closure has been applied to isolate the atmosphere within the container from outside atmospheric conditions. After the closure of the container there is an averaging-out heat exchange between the goods and the space not occupied by the goods to provide a temperature within the container different to that of the outside air and the initial temperature of the goods.
In another form of insulated container, which is general of a "bag" form, flexible but semi-rigid sides of the bag are interconnected by hinge folds allowing the bag to expand to accept large objects and contract to a smaller size for smaller objects. There is however still a large amount of unoccupied space within the container when goods are located therein and the closure of the container is applied. Again there is an averaging-out of the temperature of the atmosphere within the container and the goods within the container after the closure thereof.
This invention has as its object the provision of a bag which will substantially completed embrace goods housed within it and so minimise the amount of air within the bag. As there is very little air in the bag there will be a minimal heat loss or heat gain to the air in the bag and this ensures that the atmospheric temperature within the bag will closely approximate that of the goods located therein.
The carry bag as proposed comprises generally an inner bag and an outer with insulating means therebetween. The inner and outer bags are made from soft material. The term soft material as used herein means a flexible sheet material with substantially no body rigidity which can be formed into a bag able to adopt any configuration within the limits determined by its physical shape and size. Soft materials as hereinbefore defined are preferably selected from the group comprising woven or non-woven fabric sheet materials and sheet plastics material. Preferably also the inner bag material is waterproof.
Broadly, the present invention can be said to comprise an insulated carry bag including an outer bag part made of soft material (as hereinbefore defined) with an opening therein, and an inner bag part made of soft material (as hereinbefore defined) with an opening therein, the perimeters of the openings in the inner and outer bags are joined to provide a mouth for the carry bag and closure means for the mouth is provided whereby the mouth of the carry bag can be substantially closed to isolate the interior of the inner bag part from atmosphere, and a plurality of particles of thermally insulating material between the inner and outer wall parts of the carry bag.
Two presently preferred forms of the invention will now be described with reference to the accompanying drawings in which:
FIG. 1 is a perspective view of the carry bag in a mouth closed configuration,
FIG. 2 is a perspective view in a mouth open configuration,
FIG. 3 is a sectional elevation on the section line 3--3 of FIG. 2,
FIG. 4 is a view similar to FIG. 3 with a bottle housed in the carry bag,
FIG. 5 is a view similar to FIG. 3 of an alternate construction, and
FIG. 6 is a perspective view of a second form of the invention.
Referring to the drawings the carry bag comprises an outer bag 1 made of a soft material as hereinbefore defined and in the present example is made from plastic coated woven fabric with sewn joints, although welded or heat sealed joints can be used. Inside the outer bag 1 there is an inner bag 2 made of soft material as hereinbefore defined and in the present example is made of laminated polyethylene sheet material again with sewn joints although welded or heat sealed joints can be used. The inner bag 2 preferably has a capacity when opened up which is less than that of the inne
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patent: 3595464 (1971-07-01), Harrison
patent: 4211091 (1980-07-01), Campbell
patent: 4343158 (1982-08-01), Campbell
Garbe Stephen P.
Weinstein Louis
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