JP2005324021A - Container with inliner bag and one-way dispensing valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container having an inliner bag arranged therein and provided with a one-way valve.
The inliner bag includes a plastic bag 9 manufactured by injection blow molding. The inliner bag has a delivery nozzle 13 and is in the shape of a bottle, preferably made of low density polyethylene (LDPE). The bottle has a rim 14 projecting radially outward in the shoulder region 12 of the delivery nozzle 13 or in its lower region. This rim acts as a disk valve on the inside of the outer container 1. The one-way valve 2 has a plug 15 fitted to the delivery nozzle 13. The plug has a delivery channel 19 that includes a conical diameter expansion port 20. A cannula 21, which is integrally provided with a tension spring 22 and a conical valve 23, fits into the delivery channel 13. The conical valve 23 cooperates with the enlarged diameter port portion 20.
[Selection] Figure 1

Description

  The present invention relates to a container having an inliner bag disposed therein and provided with a one-way valve.

  When a fluid or viscous or pasty material is hermetically filled and then dispensed from a container, various technical problems arise that must be solved. With these solutions, the cost of implementing such a solution becomes a problem. Furthermore, it is important that the container is easy to operate when dispensing and taking out the contents.

  For example, eye drops must be filled into tubes and the tubes must be welded in an airtight manner so that the contents never come into contact with air. This is because otherwise it will be contaminated with bacteria. Thus, the eye drops can be filled into a plastic tube, welded at both ends, and dispensed from the plastic tube for single use. The term disposable container is used for a single application portion of the contents. Once opened, the plastic tube cannot be closed again, so the remaining contents cannot be removed later. If a liquid or pasty material that is susceptible to air is filled into a container, such as a plastic container or bottle, for multiple applications, if the container retains its shape, the volume delivered during removal is reduced. The problem arises that it must be replaced by the air inside the container. Otherwise, retrieval is not possible at all. One solution to this has traditionally been provided by a container in which a deformable tubular bag holding the contents susceptible to actual air is provided. The opening of the tubular bag is connected to the inside of the container mouth, and a one-way valve is provided. The one-way valve is formed by plastic injection molding and must be sealed separately from the tubular bag, for example by welding to the bag. Between the one-way valve welded to the opening or inside of the tubular bag and the mouth of the container, air can flow into the container through a specially provided channel and then between the tubular bag and the interior of the container. Fill the space between. If air does not flow in this way, the tubular bag cannot be emptied. It must be possible to form an empty space when removing the contents. Such a tubular bag placed in a container or bottle is called an inliner bag.

  However, this solution using conventional inliner bags is complex to assemble and is correspondingly expensive. After the tubular bag and its one-way valve are manufactured separately and in different ways, they must be welded together to form a seal. The tubular bag must then be rolled or folded so that the tubular bag can be introduced into the container or bottle through the mouth of the container or bottle. In general, the interior of a container or bottle can be hermetically accommodated with a liquid or some viscous or pasty material, simplifying their manufacture and allowing the contents remaining in the bottle or container to be air-conditioned. It is desirable to allow optional doses to be removed as needed without contacting them. Such bottles or containers are particularly responsive to the requirement to contain the contents in a sterile condition. Many contents include preservatives due to storage and dispensing issues. This is because the ingress of air cannot be completely eliminated. An excellent technical solution that allows hermetic sealing, hermetic storage, and dispensing for multiple use is that it eliminates the use of preservatives and thus has great advantages. However, even if there is no doubt that no preservatives are used, the containers or economically manufacturable bottles store the contents hermetically with or without the introduction of air and / or There are significant advantages in dispensing.

  Therefore, first of all, it is an object of the present invention to provide a container in which an inliner bag is arranged, which can be manufactured and installed more economically. Another object is to provide an inliner bag that can store liquid or pasty substances in a safe and airtight manner, is easy to dispense, contains few individual parts, is economical to manufacture and is easy to install. Is to provide a container with. Another object of the present invention is to provide a one-way valve formed from only two parts suitable for such a container having an inliner bag.

  The purpose is a container having an inliner bag disposed therein and having a one-way valve, the inliner bag being manufactured by injection blow molding from low density polyethylene (LDPE) and having a delivery nozzle. Liner bottle, one-way valve is inserted from the outside into the delivery channel, with the delivery channel and the conical diameter-enlarged mouth, the plug fitted to the delivery nozzle, and the tension spring and the conical valve as one body The cannula is achieved by a container characterized in that the conical valve cooperates with the diameter expansion port of the delivery channel and the cannula can be snapped onto the delivery channel under the initial tension of the tension spring. A further object is a one-way valve suitable for installation as a one-way distribution valve in a delivery nozzle of an inliner bottle injection-molded from low density polyethylene (LDPE) comprising a delivery channel and a conical diameter expansion port. And a plug fitted to the delivery nozzle, and a cannula that can be inserted from the outside into the delivery channel, integrally comprising a tension spring and a conical valve; In cooperation, the cannula is achieved by a one-way valve characterized in that it can be snapped onto the delivery channel under the initial tension of the tension spring.

  The accompanying drawings show one embodiment of such a container in the form of a bottle with a one-way dispensing valve. With reference to these drawings, the container having the inliner bag disposed therein will be described. Furthermore, a one-way dispenser bag suitable for the delivery nozzle of such an inliner bag will be described. The function of the entire container will be described regardless of its parts.

  FIG. 1 shows a container here in the form of a plastic bottle 1. This container is provided with a delivery valve 2. The delivery valve is shown in full length in a cross-sectional view that is slightly perspective to provide a three-dimensional effect. The outer bottle 1 is preferably made of low density polyethylene (LDPE) and can be manufactured by injection blow molding. At the bottom of the outer bottle 1, there is a slightly raised base 3, which forms an annular surface that ensures good stability of the bottle. At the top, there is first a first shoulder 4 and the bottle 1 is slightly narrower from this shoulder. Following the narrow section 5, an inclined shoulder 6 that is inclined with respect to the longitudinal axis of the bottle is provided, and a bottle nozzle 7 extends from the shoulder. The bottle nozzle includes an external screw 8 in the illustrated example.

  The outer bottle 1 can be elastically deformed by a manufacturing material and a manufacturing process thereof. The surrounding area can be compressed with a hand or two fingers to reduce the internal volume. An inliner bag 9 is disposed inside the bottle 1. The inliner bag may be an elastically deformable container of another design. However, the inliner bag 9 is completely different from the prior art, and is not in the form of a tube-shaped bag, but in the form of a container manufactured by injection blow molding, that is, a bottle manufactured by injection blow molding. Here, the inliner bottle 9 manufactured by injection blow molding is continuous from the slope shoulder 10 to the narrow section 11. This is fitted into the narrow section 5 of the outer bottle 1. Following this, another inclined shoulder 12 is provided, the upper end of which is joined by a delivery nozzle 13. The delivery nozzle can be inserted into the bottle nozzle from the outside, or in another aspect, the bottle nozzle can be glued or welded. As a special feature, the inliner bottle 9 produced here by injection blow molding has a rim 14 projecting radially outward in the region of its upper inclined shoulder 12 or in its lower region of its delivery nozzle 13. In preparation. The outer edge of the rim 14 is adjacent to the inside of the inclined shoulder 6 of the outer bottle 1 and thus forms a disc valve. Due to this shape, the rim 14 is slightly curved downward and acts as a one-way valve. Air can flow from above to below between the edge of the rim and the inner surface of the outer bottle 1. On the contrary, when the pressure below the rim 14 is increased, the rim is pressed more strongly against the inclined shoulder 6 of the outer bottle 1, and the passage between the edge of the rim and the inclined shoulder 6 is made. Seal.

  A plug 15 is used at the delivery nozzle 13 of this inliner bottle 9 to close the inliner container produced by injection blow molding, i.e. the inliner bottle 9 in the form of a bottle produced by injection blow molding in this example. To do. This plug 15 made of injection-molded plastic forms a seal by being fitted to the delivery nozzle 13. If necessary, for example, if moisture resistance is required, it may be welded thereto by ultrasonic waves. A modification to this is welding by friction welding. This is done by rotating plug 15 rapidly in delivery nozzle 13 over a short period of time, heating the friction surface and forming a dense weld seam. A bead 16 is provided outside the plug 15 so as to be closely fitted and connected to the inside of the delivery nozzle 13. The delivery nozzle 13 is provided with a corresponding groove for this purpose. A cover 17 having a central hole is provided on the top of the plug 15. A delivery tube 18 extends upward from the cover. The delivery tube 18 forms a delivery channel 19 having a mouth 20 with an enlarged diameter at the end. Plug 15 forms a one-way valve with additional components. In practice, a cannula 21 with an integral tension spring 22 and conical valve 23 is inserted into the delivery channel 19. The conical valve 23 cooperates with the diameter expansion port portion 20 of the plug 15. A cannula 21 is introduced into the delivery channel 19 of the plug 15 from above. The lower end of the cannula then projects out of the lower end of the delivery channel 19. A groove is provided on the peripheral surface of this end, and this groove snaps into a corresponding bead provided inside the delivery channel 19. Thus, the cannula 21 is securely connected to the plug 15 and snaps into the delivery channel 19. A slight tension is applied to the tension spring 22 and, therefore, an initial tension is applied. Thus, the conical valve 23 is pulled downward, so that the valve 23 seals the conical diameter opening 20 of the delivery channel 19. A cap 24 is placed over the upper portion of the outer bottle 1 and the entire plug 15 with the delivery tube 18. Here, the cap is in the form of a cap with a thread, ie a cap with an internal thread.

  FIG. 2 shows the entire inliner bag separately. The upper side of the bottle body 9 is adjacent to the first shoulder 10, the narrow section 11 and the inclined shoulder 12 are adjacent to it, and then the delivery nozzle 13 is adjacent. Here, the outwardly projecting rim 14 is provided by molding in the lowermost region of the delivery nozzle 13. This rim is provided with a bead 25 on the inside of the outer bottle 1 and on the outside of the delivery nozzle 13 so as to act as a disk valve. When this inliner bottle 9 is inserted into the outer bottle 1, the bead 25 snaps into a corresponding groove inside the bottle nozzle 7 of the outer bottle. A groove 26 is provided inside the delivery nozzle 13. As described above with reference to FIG. 1 and as shown in this figure, it is this groove 26 into which the bead 16 outside the plug 15 fits.

  A groove 27 extending in the length direction of the delivery nozzle 13 and passing through the bead 25 can be provided outside the delivery nozzle 13 of the inliner bottle 9. This groove 27 serves to carry air during the delivery of the contents from the inliner bottle 9, as will become more apparent below. The inliner bottle 9 is manufactured as a special product by injection blow molding, in particular from a suitable low density polyethylene (LDPE). Therefore, it can be elastically deformed. Due to this property, the inliner bottle 9 can be squeezed to the extent that it can be introduced through the bottle nozzle 7 of the associated outer bottle 1 with its base facing forward, and can be pushed into the outer bottle. To facilitate this indentation, the inliner bottle 9 produced by injection blow molding is first turned over, the seal is overlaid with the nozzle, and the contents of the bottle are discharged through it. Thus, the bottle 9 is crushed, and then the overall diameter is smaller than the bottle nozzle 7 of the outer bottle 1. By carefully sizing the inliner bottle wall, i.e. by making the area somewhat thinner, the rim and thus the disc valve formed thereby rests underneath the bottle and is thus in the correct orientation. The bottle can be shrunk so as to curve. In this contracted state, the inliner bottle manufactured by injection blow molding can be easily pushed into the outer bottle 1. When the delivery nozzle of the inliner bottle 9 is snap-fitted to the bottle nozzle 7, the inliner bottle 9 inside the outer bottle is again filled with air and then filled with the contents. Thus, it fits snugly inside the outer bottle 1. The delivery nozzle 13 of the inliner bottle 9 fits snugly inside the bottle nozzle 7 and the protruding rim 14 that can be bent elastically up and down has an inclined surface 6 whose outer edge is facing the inside of the outer bottle 1. A seal is formed against. The bottle is then filled. In the case of eye drops, filling takes place under aseptic conditions, i.e. only sterile air is introduced into the bottle at the same time. After filling the inliner bottle 9, a plug 15 having a one-way valve 2 is attached, and then the bottle is hermetically sealed.

  FIG. 3 shows the container with cap and inliner bottle 9 and one-way valve 2 in longitudinal section. Here, the radial channel 28 extends inwardly from the outer edge in the cover 17 of the plug 15, and its end communicates with the groove 27. This is shown in FIG. An annular groove may be provided on the underside of the cover 17 and the groove 28 continues to the groove so that air can flow into the groove 27 around the plug. As a modification, the delivery nozzle 13 of the inliner bottle 9 may be chamfered on the outer side of its upper edge so that such an annular groove is formed. Air enters the space between the outer bottle 1 and the inliner bottle 9 through this channel 28, then the annular groove and then the groove 27, so that the contents can be delivered by deformation of the inliner bottle 9. . An anti-tamper band 29 may be provided at the bottom of the cap 24 that is connected to the lower edge of the cap 24 in a known manner at several predetermined breaks. The cap 24 can therefore not be twisted off without breaking these predetermined break points. For this purpose, either the cap must be twisted vigorously or the anti-tamper band 29 that has been preliminarily cut off must be removed. In either case, it can be guaranteed that it has been opened for the first time. When the cap 24 is removed, the contents can be discharged from the inliner bottle 9 through the one-way valve 2 as soon as the pressure in the inliner bottle 9 becomes higher than the ambient pressure. In order to generate such an excessive pressure, the side part of the outer bottle 1 is compressed to compress the inliner bottle 9. By the action of the pressure thus generated, the wedge-shaped one-way valve 2 is pushed outward and the tension spring 22 is extended. As a result, the cone 2 is lifted to open the valve 2, and the contents pass through the cannula 21. It can flow outward and around the cone 23 of the valve 2.

  FIG. 4 shows a separate cannula that can be inserted into the plug 15 with an integral tension spring and conical valve. This component together with the plug 15 forms a one-way valve. It is injection molded as a single part and is therefore very economical to manufacture. First, when the plug 15 is not inserted, it is incorporated into the plug 15. For this purpose, the component is pushed from the outside through the delivery channel 19 of the delivery tube 18 of the plug 15 until its lower end projects out from the bottom of the delivery tube 18. From this state, the groove 30 may be pulled until it snaps into a corresponding annular bead inside the delivery tube 18. As a result, the entire cannula 21 including the shaft 31 and the cone 23 is fixedly held in the delivery tube 18 as the one-way valve 2. The conical body 23 of the one-way valve 2 is accurately fitted to the conical diameter-expanding port 20 of the delivery tube 18 to securely and airtightly seal it. This is because the tensile force generated by the tension spring 22 is always applied to the cone 23. The tension spring 22 is lightly tensioned when the components are installed in this state, and therefore an initial tension is guaranteed. A groove 32 is provided on the outside of the conical bulb, ie on its shaft 31. When the conical valve is lifted by the action of the liquid pressure in the inliner bottle 9 during delivery of the bottle contents, the upper end of the groove 32 opens into the conical diameter-enlarged region 20 at the mouth of the delivery tube of the plug 15. Thus, it is possible to form a connection with the outside and discharge the liquid therethrough.

  FIG. 5 is an enlarged cross-sectional view in the length direction showing the upper part of the container provided with the one-way valve. The arrow indicates the direction of movement of the one-way valve when the lower pressure becomes larger than the pressure from the outside. When the outer bottle 1 is compressed, the liquid passes through the cannula 21 and the tension spring 22, then passes through the groove 32 of the shaft of the one-way valve 2, and then flows around the cone 23 and exits outside. When the pressure acting on the bottle 1 decreases again, it returns to its original shape by the action of elastic deformation. Thus, the pressure between the outer bottle 1 and the inliner bottle 9 manufactured by injection blow molding becomes lower than the atmosphere. Accordingly, air is then drawn into the space between the inliner bottle 9 and the outer bottle 1 through the radial channel 28 and the connecting annular groove and then through the channel 27. The inliner bottle 9 maintains a slightly further compressed state every time the liquid or paste is delivered. This is because liquid, air, or paste does not flow from the outside. Therefore, it is always completely filled with liquid or paste. When the outer bottle expands and returns to its original shape, air is introduced, in particular from the outside, thus filling the space between the inliner bottle 9 and the outer bottle 1. The air flowing through the channels 28 and 27 opens further downward the disk valve formed by the radially projecting rim 14 provided outside the nozzle 13 of the inliner bottle 9. The rim 14 is slightly curved downwards, and as soon as the air does not flow downward beyond its edge, the rim 14 strikes the inside of the outer bottle 1 again or its inclined shoulder 6 and is airtight. Form a seal. The next time the outer bottle 1 is compressed, the inliner bottle 9 produced by injection blow molding is therefore further compressed, resulting in an increase in the pressure inside it and thus the one-way valve 2 against the atmospheric pressure. Can be opened. When the outer bottle 1 is released, in detail, a volume of air that exactly matches the volume of the delivered contents flows again inward. This inliner bag in the form of the actual inliner bottle 9 shown here is manufactured as a special product by injection blow molding and is therefore not a tubular bag. This makes it possible to realize a disc valve 14 which is important when needed and ensures a substantial air flow by opening and then closing and allowing the inliner bottle 9 to be further compressed. The container or the entire bottle allows the contents to be kept completely hermetically sealed, and in any case, even during the delivery of the contents, air and thus some bacteria get inside the inliner bottle 9. There is nothing. This hermetic seal, which allows the content portion to be dispensed multiple times, can often be dispensed with preservatives. Accordingly, such a container bottle including an inliner bottle 9 manufactured by injection blow molding is very suitable for filling and delivering eye drops, for example. Of course, many other types of materials are also suitable.

  This form of inliner bottle 9 and one-way valve 2 can be specially designed for such various contents, i.e. the volume and shape of the bottle 9 can be adapted. The pressure required to open the one-way valve 2 can be changed by changing the tension of the valve spring 22. Further, the rigidity of the outer bottle 1 and the inliner bottle 9 can be variously designed according to various applications. Also, the entire container, including the one-way valve, includes only four injection molded parts that are manufactured in one piece, or parts that are manufactured by injection blow molding, and an associated cap 24, making it easy to assemble several parts. is there. The one-way valve itself contains only two parts. This helps to reduce the cost of mass production of such containers. At the same time, it is easy to handle containers or bottles for delivering specific parts.

  It is also conceivable to insert an inliner bottle produced by injection blow molding without a one-way valve or disc valve into the outer bottle. For example, the inliner bottle may be made from a soft barrier material, such as a soft polyamide, for insertion into a suitable bottle regardless of its manufacturing method. The one-way valve produced here consists of only two components and is suitable for all other types of applications.

FIG. 3 is a longitudinal cross-sectional view, somewhat in perspective, of a container with a cap attached, including an inliner bag, a plug, and a cannula. It is a perspective view which shows the inliner bag isolate | separated from the whole. FIG. 3 is a longitudinal cross-sectional view of a container including a cap, an inliner bottle, and a one-way valve. FIG. 6 is a view of a cannula with an integral tension valve and conical valve, separated from the whole. It is a lengthwise expanded sectional view which shows the upper part of the container provided with the one way valve | bulb.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer bottle, plug bottle 2 One-way valve 3 Outer bottle base 4 Outer bottle shoulder 5 Outer bottle 1 narrow section 6 Outer bottle 1 inclined shoulder 7 Outer bottle bottle nozzle 8 Outer bottle screw 9 Inliner bottle 10 Inliner bottle shoulder 11 to narrower section Inliner bottle narrower section 12 Inliner bottle inclined shoulder 13 Inliner bottle delivery nozzle 14 Protruding rim 15 Plug 16 Bead 17 outside plug Plug cover surface 18 Plug delivery tube 19 Delivery channel 20 inside delivery tube Conical diameter port 21 Conical valve cannula 22 Tension spring 23 between cannula and conical valve Conical valve 24 Cap 25 Delivery Bead 26 provided outside the nozzle 13 Groove 27 provided inside the plug Longitudinal grooves of the shaft 32 the shaft 31 of the groove 31 conical valve provided radially outwardly channel 29 tamperproof band 30 cannula along the outer groove 28 plug cover surface of

Claims (9)

  In a container having an inliner bag disposed therein and provided with a one-way dispensing valve, the inliner bag is manufactured by injection blow molding from low density polyethylene (LDPE) and has a delivery nozzle (13). A liner bottle (9), wherein the one-way valve has a delivery channel (19) and a conical diameter opening (20), a plug (15) fitted to the delivery nozzle (13), and a tension; A cannula (21) which can be inserted into the delivery channel (19) from the outside, integrally comprising a spring (22) and a conical valve (23), the conical valve (23) being connected to the delivery channel (19) The cannula (21) is snuggled into the delivery channel (19) under the initial tension of the tension spring (22). Container, which is a possible fit flop.   In a one-way valve suitable for installation as a one-way distribution valve in a delivery nozzle of an inliner bottle (9) produced from low density polyethylene (LDPE) by injection blow molding, the delivery channel (19) and conical diameter expansion A plug (15) fitted to the delivery nozzle (13) having a mouth part (20), a tension spring (22) and a conical valve (23) are integrally provided in the delivery channel (19). A conical valve (23) that cooperates with the enlarged diameter port (20) of the delivery channel (19), and the cannula (21) includes the tension spring (21). A one-way valve characterized in that it can be snapped onto the delivery channel (19) under the initial tension of 22).   The container according to claim 1, wherein an inliner bag is disposed therein and comprises a one-way dispensing valve, wherein the inliner bottle (9) is located in a shoulder region (12) of the delivery nozzle (13). Alternatively, a rim (14) projecting radially outward is provided in a lower region of the delivery nozzle (13), and the rim acts as a disk valve on the inside of the outer container (1). A container characterized by being.   The container according to claim 1 or 3, wherein the inliner bag (9) is disposed in the lower region of the delivery nozzle (13). A rim (14) projecting radially outward, the rim acting as a disc valve against the inside of the inclined shoulder (6) of the bottle (1), Container to be used.   5. A container according to claim 1, 3 or 4, in which an inliner bag is disposed and provided with a one-way dispensing valve, wherein the inliner bottle (9) is a shoulder of the delivery nozzle (13). The region (12) has a rim (14) projecting radially outward, the rim acting as a disc valve against the inside of the inclined shoulder (6) of the bottle (1). A container characterized by being.   6. The container (1) according to any one of claims 1 and 3 to 5, in which an inliner bag is arranged and provided with a one-way distribution valve, the plug (15) having a delivery channel (19). Has a bead (16) on the outside, which ensures a tight fit and connection with the inside of the delivery nozzle (13) provided with a corresponding groove. container.   7. A container according to any one of claims 1 and 3 to 6, wherein an inliner bag is disposed therein and is provided with a one-way distribution valve, wherein the top of the plug (15) has a central hole. And a delivery tube (18) forming a delivery channel (19) having a mouth portion (20) having an enlarged diameter at its end, and extending upward therefrom. Container.   8. A container according to any one of claims 1 and 3 to 7, in which an inliner bag is arranged and provided with a one-way distribution valve, in the cover (17) of the plug (15). A radial channel (28) extends inwardly from the outer edge, the end of this channel being chamfered by the annular groove of the cover or the outer edge of the delivery nozzle (13) of the inliner bottle (9). A groove (27) extending downward on the outside of the plug (15) through any of the formed annular grooves and opened to a space between the outer bottle (1) and the inliner bottle (9); A container characterized by communication.   9. A container according to any one of claims 1 and 3 to 8, in which the inliner bag is disposed and provided with a one-way distribution valve, the length of the conical valve shaft (31). A directionally extending groove (32) is formed in the shaft, the groove having a bottom open into the space of the tension spring (22) and a top at the cone (23) of the conical valve. The cannula (21), which is open into the plug and inserted into the delivery tube (18) of the plug, is provided with a circular groove (30) on the outside, which groove is provided on the delivery tube (18). When the cannula (21) is in this state, it snaps into a corresponding bead provided on the inside when inserted into the tension spring (22) connected to the conical valve (23). Tension is Container, characterized in that it tears.

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