Receptacles – Receptacle having flexible – removable inner liner – Removable bag liner
Patent
1998-09-15
2000-03-07
Moy, Joseph M.
Receptacles
Receptacle having flexible, removable inner liner
Removable bag liner
22045901, 383120, B65D 8812
Patent
active
060328185
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a liner intended as inner packing in a container for holding a fluid, comprising an upper and a lower rectangular web of essentially the same length and width, which are made of a flexible material and are joined to each other along their outer edges, and at least one sealable opening in one of the webs for filling the liner with said fluid and then emptying the liner of said fluid in the container. Each sealable opening is arranged in the same rectangular web near the respective outer edge in a first pair of the opposite outer edges of the webs and on a symmetry line of the web, which is orientated parallel to and equidistantly from a second pair of the opposite outer edges of the webs. The invention also relates to its use as inner packing in a container for holding a fluid.
It is known to transport and store fluids in a liner intended as inner packing in collapsible containers of the 500-1000 liter (0.5-1.0 m.sup.3) size. These containers provide the industry with the following logistical advantages: filling. size and is stable during stacking both when filled up and when empty.
Despite the fact that the industry sees certain advantages in using an inner liner, there is a reluctance to increase handling in connection with filling because of the complicated fitting of an inner liner. Customers who use inner liners today often need to fill the liner with air first in order for it to settle into place in the container. When the product filling starts, the air has to be evacuated at the same rate as the filling is being effected.
A liner as set forth above is known from WO 93/24389. All the corner portions of the known liner have been folded so that each corner portion has been applied over the web which does not exhibit the sealable openings adjacent to, but not overlapping them. Furthermore, the liner folded in this manner has been rolled up from a pair of opposite outer edges of the liner and up to the sealable openings. Subsequent to the raising of the container, onto which the liner previously has been attached, the liner is filled with a fluid through the upper opening. In this connection, there is a risk that the fluid, especially if it is viscous, does not flow down to the lowest portion of the liner which rests against the bottom of the container. Instead, the lowest vertical portion of the liner will be formed by the fluid into an expanding bulge which settles over the lowest portion and effectively prevents the fluid from filling it. Because of this "tying off", the container can only be partially filled with the fluid, since a part of the liner "is missing". In addition, the design of the liner--the liner is constructed of only two rectangular webs joined to each other along their outer edges--results in difficulty in filling the corner portions of the liner, and in the liner being unable to adjust optimally to the shape of the container.
The object of the present invention is to provide a liner intended as inner packing in a container for holding a fluid, which allows simple and safe mounting of the liner in the container, and with a good fit.
Another object of the invention is to provide an inner packing for a fluid in a container, which allows quick, reliable, and hermetic filling of the container with the fluid and without requiring any deaeration of the inner packing.
According to the invention, these objects are achieved by a liner according to the opening paragraph, which is characterised in that at least one doubled web is arranged between the rectangular webs and is joined by its outer edge portions to the upper rectangular and the lower rectangular web, whereby two superposed flap members are formed which are open to the inside of the inner packing and whose outer edge portions are parallel to and aligned with the outer edges of the rectangular webs, and that the rectangular webs are joined to each other along their outer edges which are located opposite the flap members and along their outer edges which are parallel to said symmetry line, from the firs
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patent: 5865541 (1999-02-01), Lafleur
Alfapac AB
Moy Joseph M.
LandOfFree
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