CN85105607B - Flexible container - Google Patents

Abstract

The present invention relates to a flexible container. Injection or discharge can be implemented by an aperture in the container. The container has a flexible movable sheet for covering the aperture, and the flexible movable sheet is used for sealing the container after the injection. According to the container provided by the present invention, the movable sheet is connected to the container. Because two welding seams which are gradually and mutually away and are formed on the opposite two sides of the aperture form a slide track, materials can be introduced into the container during the injection.

Description

Flexible container

The present invention is the relevant improvement that is used to deposit and allot the flexible container of liquid or solid suspending fluid.Specifically be about to No. the 519675th, Australian Patent with the improvement of the container of being narrated in the application case in applying number No. 79245/8.

Announced a kind of soft container in the above-mentioned specification sheets, a liquid filling pore has been arranged above,, also can change, a container has been allotted above mouth is inserted in this ring with a ring corral.For liquid filling pore can be sealed, there is a sheet alive that the hole is covered, thereby can does heat-seal to live sheet and orifice edge.So just make a kind of airtight package, only just breaking when mouth injects in the ring allotting, allotting mouth has a plug, and the sheet alive of sealing of hole is punctured.

A difficulty that runs into when initial designs is in the heat-seal operation, and the sheet that is difficult to guarantee live is correctly located on the aperture.For addressing this problem, on the select location of both sides, aperture, the border seal in partly live sheet and aperture.

This structure for example, illustrated in figures 1 and 2 as accompanying drawing.Fig. 1 shows a part of flexible container.This container with two wall portions 2 and 4 along seam 3 weld togethers.Container is by aperture 7 cans and allot, and aperture 7 is by gland 8 corrals.Flange 9 outside faces of wall of container 2 and gland 8 are fixed, and the aperture is covered by the sheet 5 of living.On some positions of excircle, this sheet of living is made heat seal at flange 9 inside faces with roundlet seal point 13.The live edge 12 of sheet 5 can be seen from the schematic top plan view in the aperture 7 of Fig. 2.The edge 14 of flange 9 also can be seen from Fig. 2.After container is filled with, 15 heat-sealing sealings along the line.

Sheet correct on every side placement in the aperture has had sheet alive to limit again liquid has been poured into by the aperture though this arrangement can guarantee to live.Increase the pressure of perfusion liquid on the sheet of living, just can obtain suitable rate of flooding.The existence of sheet has limited container and has been used for solid suspension owing to live, as the pineapple fragment etc.

An object of the present invention is to address these problems.

For reaching this purpose, the present invention proposes a kind of flexible container along periphery seal, an aperture on facing the wall and meditating, one of said vesse is arranged, by this aperture the stock of container is poured into or allots, there is a ring to be installed in the above-mentioned hole, above-mentioned ring can containment device, and the stock of said vesse is allotted, and places a sheet alive in container inside, cover above-mentioned aperture, a heat sealable surface is arranged,, not heat sealable surface is arranged on reverse side towards above-mentioned ring, above-mentioned sheet alive connects said vesse or ring, thereby when perfusion state, the sheet of living forms a slideway below the above-mentioned aperture, and the guiding stock enters container.

In desirable embodiment, ring (or gland) has a big base portion bead, in the aperture in opposite directions on the position of both sides, have two mutually gradually away from the heat-sealing weld seam sheet of living is fixed.Weld seam forms a slideway and widens towards the direction of leaving the center, aperture.Though under the state before perfusion, sheet and ring bead in perfusion state, are lived separately in the sheet of living recline ring bead and aperture, form the funnel of the ring axis normal of making peace greatly.The diameter of the funnel of Xing Chenging like this depends on the position of weld seam, and the position of these weld seams should be able to guarantee diameter at least with the equal diameters of ring.

An ideal form of the present invention is shown in Fig. 3,4 and 5 in the accompanying drawing, and Fig. 3 is the birds-eye view of the ring and the sheet of living, and Fig. 4 is the cutaway view of ring and the sheet of living in the perfusion operation, and Fig. 5 is the transparent view of Fig. 4.

Ring 21 is that a polyethylene is cylindrical, a base portion bead 22 and a bearing flange 23 is arranged and locate bead 24.Ring is also used modified poly ethylene manufacturing, for example polyvinylacetate in addition.In the aperture on the ring reeve flexible container wall, the upper surface of wall of container and base portion bead 22 is sealed.In when perfusion, when the ring clamping, be placed on filling nozzle below, bearing flange 23 provides support to container.Usually flexible container is placed in the case of a rigidity during perfusion, ring is put into by a hole on the tank wall, wall is clipped between the bead 22 and 23 of ring 21.Allotting mouth with one then is inserted in the ring 21.

With weld seam 26 and 27 sheet 25 of living is fixed on the lower surface of base portion bead 22.In not irritating the bag of liquid, the sheet 25 of the living bead 22 that reclines, irritate liquid after, with the circular bonding wire around the aperture periphery of ring 21, sheet seals living.The sheet 25 of living can have a manufacturing of double-ply laminated material with any.One deck in two-layer is that non-heat-sealing is outer, available such as polyester, nylon or metallic paper etc., heat-sealing internal layer available polyethylene or with modified poly ethylene etc.

Container can be made with any flexible film or laminated material, and the inside liner of living is not essential, but needs to seal the desirable container of formation.

Laminated material is generally double-layer structure, and an external protection and a polyethylene liner layer are arranged, and what polyethylene can be with modified version to improve its performance.

Sometimes add the 3rd layer,, be clipped between the lamination shroud gas, water vapour and light as aluminium foil or vacuum deposited aluminum.

The liner layer of living is fixing uses polyethylene, and natural polyethylene or modified poly ethylene all are suitable for.

When pouring into according to Figure 4 and 5, the pressure of fluid is by ring 21 and collide the sheet 25 of living, and the sheet 25 of living is strutted with bead 22, forms bend pipe and outlet, and fluid is guided, and enters internal tank.

Different with structure illustrated in figures 1 and 2, flow velocity is unrestricted.After adopting structure of the present invention, rate of flooding has been brought up to 8.5 liters of per minutes from one liter of per minute.

With traditional gland, the liquid of 50,000 centipoises need obtain 1 liter/minute flow velocity with the head pressure of 280cm.

Can reach 6 liters/minute with gland of the present invention with half head pressure (head 140cm) flow velocity.

With the liquid of 6,000 centipoises the time, with traditional gland, when delivery pressure was the 280cm head pressure, flow velocity was 1.6 liters/minute, and uses gland of the present invention, only needed the head pressure of 15cm just can obtain identical flow velocity.

Use traditional gland, the liquid of 1 centipoise can obtain 1 liter/minute flow velocity with the head pressure of 15cm, and can obtain 8.5 liters/minute flow velocity with gland of the present invention.

Can also pour into to container with solid suspension now in addition, the size of the particulate matter in the liquid can reach 2/3 of ring internal diameter.For the particle size that can enter container, the sheet itself of living has just no longer included restriction.

Claims (3)

1, a kind of around edge osed top flexible container, an aperture is arranged on one wall of said vesse, stock in the container can be from this aperture through charging and allotting, a ring is installed in the above-mentioned aperture, can insert the allotting device of allotting stock in the said vesse, it is characterized by at internal tank and place a sheet alive, cover above-mentioned aperture, heat sealable surface is arranged, towards above-mentioned ring, a non-heat-sealing surface is arranged at its back side, above-mentioned sheet alive is attached on said vesse or ring, under the situation of perfusion, lives sheet below above-mentioned aperture, form a slideway, the guiding stock enters container.

2, according to the described flexible container of claim 1, it is characterized by above-mentioned sheet alive, at least with two both sides in opposite directions that are positioned at above-mentioned aperture, mutually gradually away from weld seam, be connected on said vesse or the ring, form and feed said vesse in-to-in slideway.

3, a kind of flexible container as claimed in claim 1 or 2 is characterized by sheet alive with the laminated material manufacturings that two group layers are arranged, and towards the group laminar surface polyethylene manufacturing of ring, and back layer is with the mylar of non-heat-sealing, nylon or metallic paper manufacturing.

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