CN1842473A

CN1842473A - Closure for collapsible container

Info

Publication number: CN1842473A
Application number: CN 200480024740
Authority: CN
Inventors: 斯科特·布朗
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-30
Filing date: 2004-06-25
Publication date: 2006-10-04
Also published as: AU2003903313A0

Abstract

A closure (1) for flexible packaging (2, 3) with a floating valve (5) which is a situated within the cap (4). The cap (4) is provided with holes (14) to allow for escape of air. The valve (5) may incorporate a spring (15) to regulate flow of air upon collapse of container (2, 3).

Description

The sealing cover that is used for collapsible container

Technical field

The present invention relates to a kind of sealing cover (closure) that is used for collapsible container.

Background technology

A kind of collapsible container that has inner shutoff valve is disclosed in applicant's Australian Patent no.738438.During the contents turned letter that held in container, the sidewall of container can be folded, and to reduce volume of a container, shutoff valve provides sealing between residue contents and outlet of container.

Purpose of the present invention is similar to Australian Patent no.738438, and it mainly is the cost that is used to reduce this container.

Further aim of the present invention and advantage will become more obvious from the explanation that only provides with way of example subsequently.

Summary of the invention

According to the present invention, a kind of closure means that is used for collapsible liquid container is provided, this collapsible liquid container has the outside thread outlet, and described closure means comprises:

(a) have the cap of exhaust gear;

(b) be positioned at the valve of this outlet, described valve has and is suitable for being placed in the top of this threaded outlet and the circumferential flange between this cap, and extend to semisphere barrier film dome (diaphragm dome) in this outlet, and described valve also is arranged and constructed into when the fluent in the container reduces, and the air at the head room place in the container can be discharged from via exhaust gear.

This exhaust gear can comprise the air flue on the inwall that is positioned at this cap and be positioned at the top of this cap or the one or more holes on the sidewall that these holes can be with the air exhaustion in the container in atmosphere.

This outlet comprises the circumferential flange of inside sensing.

This valve can by silicone or similar material is molded forms.

This cap can be molded by plastic.

This container can be molded by plastic.

This container can be made by the laminated material that comprises cardboard.

This closure means can comprise the biasing spring that is arranged between dome bottom and the cap.

Description of drawings

In conjunction with the accompanying drawings feature of the present invention is described now, wherein:

Fig. 1Be the section-drawing of the outlet of a flexible container, show according to closure means of the present invention, and

Fig. 2Be the lateral plan of a flexible bottle type container, show the closure means of separating with container according to the present invention, and

Fig. 3Be the lateral plan of a box describe device, show the closure means that is connected according to the present invention on this container,

Fig. 4,5,6 and 7Section-drawing for other possibility form of the present invention.

The specific embodiment

With reference to the accompanying drawings, the invention provides the closure means of representing with arrow 1 generally, to be used for fixing on collapsible liquid container 2,3.

This closure means comprises cap 4 that has exhaust gear and the valve of representing with arrow 5 generally.

This valve is provided with the circumferential flange 6 between the roof 9 of the top 7 of the threaded outlet 8 that is suitable for being placed in this container and cap 4, and extends to the semisphere dome 10 in this outlet.

Provide an exhaust gear by the mutual action between cap 4 and the valve 5.

Cap 4 also is provided with the negative thread 11 that the outside thread 12 with this container is complementary.

The inwall of this cap is provided with a plurality of grooves 13, and each groove leads to the hole 14 on its roof.

When being used and need making air-out in the head room of container to reduce along with the material in the container, cap and barrier film are placed original position, and apply axle pressure to container, promote with the flange that forces barrier film, and can be in mode shown in Figure 1 via the hole with air exhaustion.

Cap is set at " discharging " position from complete leak free rotated position half-turn part, thereby allows between cap and bottle and form valve clearance.

When the fluid in the container reached the valve place, the buoyancy of fluid made it be blocked in the cap place and forms vent plug, and further stoped the discharge of air or steam.

The resilience of collapsible container or antagonistic force will produce opposite suction, and it forces valve to be got back on the top of bottle outlet, produce required hydraulic pressure thus and block, and expand to prevent bottle again.

Close fully up to it by the turn-knob cap, so form final permanent seal.Can on cap and bottle, mark be set, with indicating sealing position and exhaust position.

The air discharge channel of head room is shown in the orienting arrow of right-hand side among Fig. 1.

Air-out passes through the top 7 of the container outlet 8 around the flange 6, and is discharged from via the hole in the cap roof 9 14.

Additional pore (not shown) also can be set, to reduce the probability in the human eye of liquid splash in the exhaust process in the sidewall of cap.

This closure means can be used on any type of Foldable container.

Fig. 2 shows disclosed container 2 among the Australian Patent no.738438 that is similar to the applicant.

Fig. 3 shows and is similar to known Tetra-pak ^TMBox describe device 3.

According to another aspect of the invention and with reference to Fig. 4,5 and 6, this sealing cover can comprise the biasing spring 15 between the downside of the bottom 16 that is arranged in dome 10 and cap 4.

This spring 15 can be made by corrosion-resistant steel or food grade plastic (food grade plastics), and scalable air-flow and liquid stream (or flow of gas and liquid).

Fig. 4 shows the cap that is in " compression " position.Along with container 2 is compressed, air is walked around the hermetic unit of floating valve, and discharges via the deflation hole in the top of cap to be similar to the mode shown in Fig. 1.As shown in Figure 5, when the fluid in the container 2 arrives valve 5 places, will cause the lifting of valve, and block air and pass flowing of deflation hole.In case produce above-mentioned phenomenon, container will no longer be compressed.When container is released (Fig. 6), the rebound action that is produced by the folding part in the container is adsorbed onto valve on the container neck, blocks thereby produce hydraulic pressure.When valve was in this position, container can not expand again.

Tighten cap (Fig. 7) then, to form permanent seal.

Spring 15 can be fastened by the upper and

lower saddle

17,18 that is formed at respectively in dome and the cap.

But closure means of the present invention provides a kind of is used to make air in the collapsible container to be discharged device with economy, safety and the simple operations that reduces head room.

Below only the mode by example is described feature of the present invention, under the situation that does not break away from essence of the present invention or scope, can make improvements and add.

Claims

1. sealing cover, it comprises the cap that has exhaust gear, is suitable for being placed in the floating valve in this cap, and can comprise a spring, and during head room in removing this container, this spring is regulated air-flow.

2. valve as claimed in claim 1, it has a circumferential flange, and this circumferential flange can be semisphere, taper, dish type or sphere, and when all air were all discharged from container, this circumferential flange was used for blocking the flowing of contents of container.

3. valve as claimed in claim 2 is characterized in that, this valve can be in conjunction with a soft circumferential flange of being made by silicone or similar material, and it is used for providing sealing in the outflow outlet of the inside top of cap and container.

4. cap as claimed in claim 1, it has negative thread, is complementary with the outside thread with container.

5. cap as claimed in claim 1, it has inwall, and this inwall can be provided with a plurality of grooves that lead to exhaust gear.

6. a cap as claimed in claim 1 wherein can be provided with mark on this cap and container, with indication discharging and sealing station.

7. cap as claimed in claim 1, it is in conjunction with one, with retainer spring.

8. valve as claimed in claim 2, it is in conjunction with one, with retainer spring.

9. interference piece, it is positioned at outside cap and the container, to guarantee the sealing of this container.

10. spring as claimed in claim 1, it can be made by corrosion-resistant steel or food grade plastic.