US20220097931A1 - Transit seal plug - Google Patents
Transit seal plug Download PDFInfo
- Publication number
- US20220097931A1 US20220097931A1 US17/239,123 US202117239123A US2022097931A1 US 20220097931 A1 US20220097931 A1 US 20220097931A1 US 202117239123 A US202117239123 A US 202117239123A US 2022097931 A1 US2022097931 A1 US 2022097931A1
- Authority
- US
- United States
- Prior art keywords
- seal plug
- transit
- sealing member
- plug according
- gripping member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
- B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
- B65D47/12—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having removable closures
- B65D47/121—Stoppers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2231/00—Means for facilitating the complete expelling of the contents
- B65D2231/001—Means for facilitating the complete expelling of the contents the container being a bag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0006—Upper closure
- B65D2251/0025—Upper closure of the 47-type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0068—Lower closure
- B65D2251/0075—Lower closure of the 39-type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
- B65D47/2006—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge formed by a rigid spout outlet opened by tilting of the spout outlet
Definitions
- the present invention relates to a plug which prevents leakage of materials from a container during transit of the container.
- the type of container particularly contemplated is a plastic container having a disc-top or a flip-top dispensing cap, of the type commonly used to contain liquid products intended, for example, for household, personal, pet, automotive care.
- a dispensing cap is provided, which is fixed to the container and includes a fluid conduit in fluid contact at one end with the fluid within the container. When the second end of the conduit is open, the user can transfer the contents from the container to the desired area.
- a closure means is usually provided to releasably close the second end.
- Such a closure mechanism is usually also formed of a plastics material and must provide a sufficiently strong closure when required, yet allow the user to open the container with relative ease.
- closure mechanism Two common types of closure mechanism are a disc-top cap and a flip-top cap.
- the former comprises a disc-like closure mechanism which is pivotable about an axis across a diameter of the cap.
- the pressure for pivoting can be applied by a user's thumb and brings the conduit of the cap between a first position where the conduit is in fluid connection with the container's contents allowing the contents to exit via the conduit, and a second position where there is no fluid connection and the container is thereby closed.
- Disc-top caps are often secured onto containers having a wider neck orifice than the conduit in the cap to aid in the dispensing of relatively viscous fluids.
- a flip-cap closure comprises a cap, hingedly mounted to the main cap body.
- the cap body has a conduit which remains permanently in fluid connection with the fluid in the container body, allowing fluid to be dispensed out of the open end of the conduit.
- the hinge allows the closing portion on the cap to be moved from a first position in which the cap closes the conduit and a second position removed from the conduit which is thus open.
- a problem with which the current invention is concerned arises during transportation of a container to a customer.
- on-line ordering of products has resulted in more goods being delivered in individual packaging via postal delivery services.
- the risk when using such services of leakage of the container via the cap is greater, as handling of the individual containers can more easily result in the packaging being in a non-upright orientation than were the container to be bulk-delivered to a retail outlet.
- a transit seal plug the seal plug to be releasably secured to a dispensing cap, a sealing member having first and second annular sealing faces, a gripping member extending away from a first side of the sealing member to engage walls of a conduit, and a pull tab extending from the opposite side of the sealing member, to facilitate removal of the seal plug from a dispensing cap.
- the invention allows a seal plug to be readily included as part of a fluid-filled container, and which seal plug can be reused to reseal a container if required.
- the centre of the sealing member is frusto-conical in shape, in a conformation extending away from the gripping member, forming a dish-like structure to enable the sealing member to conform with the underside face, and so minimising the amount of plastic content necessary.
- This conformation also aids in guiding the seal plug into position relative to the container body.
- the gripping member is further preferably housed within the frusto-conical structure.
- the gripping member has a plurality of arms which reduces the weight of the seal plug.
- the gripping member is cylindrical in shape to provide greater engagement with a dispensing cap.
- the gripping member can be spherical in shape, serving to both grip and to seal off the conduit.
- the gripping member is hollow to reduce weight.
- the pull tab is rectangular in shape to provide a large surface area for a user to grip. Further preferably, the pull tab has a roughened surface to aid in a user gripping the pull tab. Yet further preferably, the pull tab has a profiled surface to assist a user in gripping the pull tab.
- the seal plug is formed of plastics material, the plastics material being selected from polypropylene (PP), polyethylene, such as optionally a low-density polyethylene (LDPE), medium density polyethylene (HDPE), a polyethylene terephthalate (PETE), a polyhdroxyalkanoate (PHA), polylactic acid (PLA).
- PP polypropylene
- polyethylene such as optionally a low-density polyethylene (LDPE), medium density polyethylene (HDPE), a polyethylene terephthalate (PETE), a polyhdroxyalkanoate (PHA), polylactic acid (PLA).
- LDPE low-density polyethylene
- HDPE medium density polyethylene
- PETE polyethylene terephthalate
- PHA polyhdroxyalkanoate
- PLA polylactic acid
- a container comprising a container body, a dispensing cap having a dispensing conduit, secured thereto and interposed therebetween in sealing arrangement, a seal plug the seal plug comprising a sealing member having first and second annular sealing faces, a gripping member extending away from a first side of the sealing member to engage walls of the dispensing conduit, and a pull tab extending from the opposite side of the sealing member, to facilitate removal of the seal plug from the dispensing cap.
- a dispensing cap/seal plug assembly comprising a dispensing cap having a dispensing conduit, and a seal plug including a sealing member having first and second annular sealing faces, a gripping member extending away from a first side of the sealing member to engage walls of the dispensing conduit, and a pull tab extending from the opposite side of the sealing member, to facilitate removal of the seal plug from the dispensing cap.
- a dispensing cap/seal plug assembly comprising a dispensing cap having a dispensing conduit, and a seal plug including a gripping member extending away from the first side to engage and seal the walls of the dispensing conduit.
- a dispensing cap/seal plug assembly having vent slots or holes in the frusto-conical area and in the pull tab area, which serve to minimize the risk of the component becoming a choke hazard
- FIG. 1 is a side view of a first embodiment of transit seal plug
- FIG. 2 is top view of the transit plug of FIG. 1 ;
- FIG. 3 is a cross-sectional view of a container closure including the first embodiment of transit seal plug
- FIG. 4 is a cross-sectional view of a container closure including a second embodiment of transit seal plug
- FIG. 5 is a cross-sectional view of a container closure including a third embodiment of transit seal plug
- FIG. 6 is a side view of a fourth embodiment of the transit seal plug
- FIG. 7 is a top view of the transit seal plug FIG. 6 ;
- FIG. 8 is a cross-sectional view of a container closure including the fourth embodiment of the transit seal plug.
- FIG. 9 shows three component parts of a container incorporating the first embodiment of transit seal plug.
- Prior art containers for fluids for many liquid products used in the household, personal hygiene or the like are typically formed of resilient plastics materials. They are further designed to have a dispensing means which can be readily opened and closed as required. As such they are susceptible to unwanted leakage of product. The risks of this can be minimised in the house and also when carried, for example in a sports bag by careful storage. Also, during bulk transportation which is usually well-controlled, the leakage of product is normally avoided.
- the foils are bonded to the container neck to achieve the necessary seal.
- This requires specialist equipment which needs to be purchased and maintained, and needs also to be incorporated into the filling company's production line. This adds to the costs and also decreases the output speed of the production line.
- plastic bottles often have a removable tab on the outside of the closure mechanism which tab is removed prior to the first use.
- the approach disclosed herein seeks a more sturdy solution which is also compatible with conventional closure designs, so avoiding the requirement to invest in expensive new tooling. Moreover, the invention described is reusable, and can be supplied ready fitted so not reducing the speed of the filling step or increasing the cost thereof.
- the invention provides a removable insert which in use is located between the neck of a container body and an outlet provided by an attached cap.
- the insert provided engages with the cap and is provided to a filling company already incorporated therein, and suitable simply to be attached to the filled container body.
- the dispensing cap is removed from the container body and the insert separated therefrom.
- the cap is replaced onto the container body and the insert disposed of, or alternatively stored for later replacement into the dispensing cap if desired.
- the various elements of the transit plug can be formed of a plastics material such as polypropylene (PP), polyethylene, such as optionally a low density polyethylene (LDPE), medium density polyethylene (MDPE), a polyethylene terephthalate (PETE), a polyhdroxyalkanoate (PHA), polylactic acid (PLA).
- PP polypropylene
- polyethylene such as optionally a low density polyethylene (LDPE), medium density polyethylene (MDPE), a polyethylene terephthalate (PETE), a polyhdroxyalkanoate (PHA), polylactic acid (PLA).
- LDPE low density polyethylene
- MDPE medium density polyethylene
- PETE polyethylene terephthalate
- PHA polyhdroxyalkanoate
- PLA polylactic acid
- the transit seal plug 10 referred to herein as a transit plug, has 3 main elements.
- the first is a gripping member 11 , housed within a frusto-conical recess in, and extending from a main dish-shaped, sealing portion 12 .
- the sealing portion can also be planar across its width, the dish shape is preferable in order to allow the sealing portion 12 to conform with the underside face, in doing so minimizing the amount of plastic content necessary.
- the gripping member 11 in use, forms an interference fit with the dispensing conduit located within the cap 62 (see FIG. 9 ) and acts to resist separation of the transit plug 10 and the dispensing cap 62 when such is not desired.
- the gripping member 11 has 4 arms in a cross-shaped or plus sign cross-section, which enables sufficient frictional engagement with the conduit, but reduces the mass of the gripping member and the materials required for its production were a, for example, cylindrical gripping member to be used.
- Other shapes of gripping member can also be utilized such as spigots having other than 4 arms, or arranged in another conformation, cylindrical, spherical or other polyhedra.
- the gripping member can also be either solid or hollow depending on the strength or weight/materials requirement.
- the pull tab 13 Extending from the opposite side of the sealing portion 12 is a pull tab 13 which a user grips hold of to remove the transit plug 10 from the dispensing cap 62 .
- the pull tab 13 is generally rectangular in the illustrated embodiment, extension in the third dimension being generally far less than in the other two, and can have a roughened surface and/or include surface features to aid a user in gripping the pull tab 13 . Pull tabs having different shapes from rectangular can be utilized if desired.
- the transit plug has a flange 14 , having an upper flange face 15 from which the gripping member 11 extends.
- the upper flange face 15 is generally planar enabling engagement with the dispensing cap 62 .
- the lower flange face 16 also has a planar outer annular portion to engage the upper rim 65 of the neck 63 of the container body 60 .
- Extending downwardly from the lower flange face 16 is a frusto-conical locator 17 .
- the taper of the wall 18 of the locator 17 assists in the transit plug 10 passing without frictional engagement, into engagement with the container body 60 . Frictional engagement would possibly cause plastic dust to be produced, which should be avoided due to contamination of the product and ultimately of the environment.
- a transit plug 10 is secured into a dispensing cap 62 by insertion of the gripping member 11 into the dispensing conduit within the dispensing cap 62 .
- the frictional engagement between the gripping member 11 and the wall of the conduit maintains the dispensing cap 62 and the gripping member 11 in coupled separable relationship.
- the engagement between the gripping member 11 and the wall of the conduit also acts to orientate the transit plug correctly.
- the upper flange face 15 is pressed against the flexible leaf seal 39 of the dispensing cap 62 to form a seal.
- a container body 60 is filled with a liquid product and the cap/flange assembly secured thereto, optionally by means of a screw-threaded arrangement. In doing so, the lower flange face 16 is urged against the rim 65 of the container body 60 forming a seal.
- the seal between the transit plug 10 and the dispensing cap 62 can also be strengthened at the same time due to the force generated by engagement. The fluid is thus more securely sealed within the container and the seals formed between the transit plug 10 and the container body 60 and dispensing cap 62 prevent leakage of the fluid from the container.
- FIG. 3 this illustrates an assembly including the first embodiment of transit plug shown in FIGS. 1 and 2 .
- the assembly comprises a container body 30 with a disc-top dispensing cap 31 secured by a threaded connection 32 thereto.
- a transit plug 33 is included which can be removed by a user on first use of the product.
- the lower flange face 34 of the flange 35 of the transit plug 33 sealingly engages the rim 36 of the neck 37 of the container body 30 .
- the upper flange face 38 is sealingly engaged with the circumferentially deployed flexible leaf seal 39 .
- the cross-shaped gripping member 40 engages the dispensing conduit 41 of the dispensing cap 31 .
- a pull tab 42 is provided to enable a user to separate the transit plug 33 from the dispensing cap 31 .
- FIG. 4 illustrates a second embodiment of transit plug 50 for use with a flip-top dispensing cap 51 .
- engagement of the transit plug 50 with the container body 52 through the flange faces is as described above for the embodiment of FIG. 3 , as is the pull tab 53 .
- the transit plug 50 has an upstanding tubular feature 54 .
- This tubular feature 54 defines a cylindrical space, and makes frictional contact on its inside diameter wall with the outside diameter wall of the dispensing cap orifice detail 55 . Frictional contact ensures that the transit plug 50 is retained to the cap.
- a third embodiment of transit plug 70 for use with a flip-top dispensing cap 71 is as described above for the embodiment of FIG. 3 , as is the pull tab 73 .
- the dispensing cap 71 includes a tubular section beneath the dispensing conduit detail 74 .
- the transit plug has an upstanding gripping feature 75 .
- the gripping feature 75 forms an interference fit with the dispensing cap tubular section 74 on the inside diameter face.
- the gripping feature 75 has a cross-shaped or plus sign cross-section, which enables sufficient frictional engagement with the tubular section of the cap 71 , but reduces the mass of the gripping feature 75 and the materials required for its production.
- Other shapes of gripping feature can also be utilized such as solid or hollow cylindrical, or other polyhedra.
- FIG. 6 a fourth embodiment of the transit plug to use with either a disc top dispensing cap or a flip top dispensing cap is illustrated.
- the transit plug includes vent holes, comprising through apertures such as holes or slots, which serve to minimize the risk of the component becoming a choke hazard.
- the transit plug no longer provides a complete barrier to fluid flow and it is necessary to seal off the conduit of the cap, as product in the container can pass from under the transit plug to above the transit plug via the vent holes.
- the transit seal plug 100 has three main elements.
- the gripping member 76 is spherical in shape. This spherical form serves two functions: to block and to seal off the cap conduit, and to grip and retain the plug 100 to the dispensing cap conduit.
- the spherical gripping member 76 can be either solid or hollow.
- the spherical gripping member 76 is housed within a frusto-conical recess in, and extending from, a main dish-shaped portion 77 as illustrated on FIG. 7 . Extending through the dish-shaped portion 77 are slots or holes 78 which serve to permit movement of air from one side of the dish-shaped portion 77 to the other.
- a pull tab 79 Extending from the opposite side of the dish shaped portion 77 is a pull tab 79 , which a user grips hold of to remove the transit plug 100 from the dispensing cap 82 .
- the pull tab 79 has a through aperture 80 , such as a hole or slot, which serves to permit movement of air from one side of the component to the other, which reduces the choke risk should the transit plug 100 be swallowed.
- FIG. 8 illustrates an assembly including the fourth embodiment of transit plug shown in FIGS. 6 and 7 .
- the assembly comprises a container body 81 with a disc-top dispensing cap 82 secured by a threaded connection 83 thereto.
- the lower flange face 84 of the transit plug sealingly engages with the rim 85 of the neck 86 of the container body 81 .
- the upper flange face 87 is sealingly engaged with the circumferentially deployed flexible leaf seal 88 .
- the spherical gripping member 76 is sealingly engaged inside the dispensing conduit 90 of the dispensing cap 82 .
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Abstract
The current invention discloses a transit seal plug, the seal plug to be releasably secured to a dispensing cap. The sealing member includes first and second annular sealing faces, and further also includes a gripping member which extends away from a first side of the sealing member to engage walls of a conduit. A pull tab extends from the opposite side of the sealing member, to facilitate removal of the seal plug from a dispensing cap.
Description
- This application is a continuation-in-part of U.S. patent application Ser. No. 17/112,631, filed Dec. 4, 2020, which claims priority to United Kingdom Patent Application No. 2015197.3, filed on Sep. 25, 2020, the disclosures of which are hereby incorporated by reference in their entirety.
- The present invention relates to a plug which prevents leakage of materials from a container during transit of the container. The type of container particularly contemplated is a plastic container having a disc-top or a flip-top dispensing cap, of the type commonly used to contain liquid products intended, for example, for household, personal, pet, automotive care.
- The use of plastic containers to transport fluids used in the consumer care sector is ubiquitous. Products such as personal cleaning, household, car-care etc. are typically supplied in a container body made from a plastics material. In order to dispense a small volume of the liquid, a dispensing cap is provided, which is fixed to the container and includes a fluid conduit in fluid contact at one end with the fluid within the container. When the second end of the conduit is open, the user can transfer the contents from the container to the desired area. In order to prevent unwanted spillage or evaporation of volatile components, a closure means is usually provided to releasably close the second end. Such a closure mechanism is usually also formed of a plastics material and must provide a sufficiently strong closure when required, yet allow the user to open the container with relative ease.
- Two common types of closure mechanism are a disc-top cap and a flip-top cap. The former comprises a disc-like closure mechanism which is pivotable about an axis across a diameter of the cap. The pressure for pivoting can be applied by a user's thumb and brings the conduit of the cap between a first position where the conduit is in fluid connection with the container's contents allowing the contents to exit via the conduit, and a second position where there is no fluid connection and the container is thereby closed. Disc-top caps are often secured onto containers having a wider neck orifice than the conduit in the cap to aid in the dispensing of relatively viscous fluids.
- A flip-cap closure comprises a cap, hingedly mounted to the main cap body. The cap body has a conduit which remains permanently in fluid connection with the fluid in the container body, allowing fluid to be dispensed out of the open end of the conduit. The hinge allows the closing portion on the cap to be moved from a first position in which the cap closes the conduit and a second position removed from the conduit which is thus open. A wide variety of hinge mechanisms are known.
- A problem with which the current invention is concerned arises during transportation of a container to a customer. In recent times, and particularly during periods when people are required not to leave their houses because of a lockdown imposed to prevent the spread of a disease, on-line ordering of products has resulted in more goods being delivered in individual packaging via postal delivery services. The risk when using such services of leakage of the container via the cap is greater, as handling of the individual containers can more easily result in the packaging being in a non-upright orientation than were the container to be bulk-delivered to a retail outlet.
- It is an object of the present invention to provide a closure means and a container which is more resistant to loss of fluid than is a conventional container.
- According to a first aspect of the invention there is provided a transit seal plug, the seal plug to be releasably secured to a dispensing cap, a sealing member having first and second annular sealing faces, a gripping member extending away from a first side of the sealing member to engage walls of a conduit, and a pull tab extending from the opposite side of the sealing member, to facilitate removal of the seal plug from a dispensing cap.
- The invention allows a seal plug to be readily included as part of a fluid-filled container, and which seal plug can be reused to reseal a container if required.
- Preferably, the centre of the sealing member is frusto-conical in shape, in a conformation extending away from the gripping member, forming a dish-like structure to enable the sealing member to conform with the underside face, and so minimising the amount of plastic content necessary. This conformation also aids in guiding the seal plug into position relative to the container body. The gripping member is further preferably housed within the frusto-conical structure.
- Optionally, the gripping member has a plurality of arms which reduces the weight of the seal plug. Further optionally, the gripping member is cylindrical in shape to provide greater engagement with a dispensing cap.
- Further optionally the gripping member can be spherical in shape, serving to both grip and to seal off the conduit. Conveniently, the gripping member is hollow to reduce weight.
- Preferably, the pull tab is rectangular in shape to provide a large surface area for a user to grip. Further preferably, the pull tab has a roughened surface to aid in a user gripping the pull tab. Yet further preferably, the pull tab has a profiled surface to assist a user in gripping the pull tab.
- Preferably, the seal plug is formed of plastics material, the plastics material being selected from polypropylene (PP), polyethylene, such as optionally a low-density polyethylene (LDPE), medium density polyethylene (HDPE), a polyethylene terephthalate (PETE), a polyhdroxyalkanoate (PHA), polylactic acid (PLA). These materials can also be conveniently utilised as recycled grades.
- According to a second aspect of the invention, there is provided a container comprising a container body, a dispensing cap having a dispensing conduit, secured thereto and interposed therebetween in sealing arrangement, a seal plug the seal plug comprising a sealing member having first and second annular sealing faces, a gripping member extending away from a first side of the sealing member to engage walls of the dispensing conduit, and a pull tab extending from the opposite side of the sealing member, to facilitate removal of the seal plug from the dispensing cap.
- According to a third aspect of the invention, there is provided a dispensing cap/seal plug assembly, the assembly comprising a dispensing cap having a dispensing conduit, and a seal plug including a sealing member having first and second annular sealing faces, a gripping member extending away from a first side of the sealing member to engage walls of the dispensing conduit, and a pull tab extending from the opposite side of the sealing member, to facilitate removal of the seal plug from the dispensing cap.
- According to a fourth aspect to the invention, there is provided a dispensing cap/seal plug assembly, the assembly comprising a dispensing cap having a dispensing conduit, and a seal plug including a gripping member extending away from the first side to engage and seal the walls of the dispensing conduit.
- According to the fifth aspect of the invention, there is provided a dispensing cap/seal plug assembly, the plug having vent slots or holes in the frusto-conical area and in the pull tab area, which serve to minimize the risk of the component becoming a choke hazard
- The invention is now described with reference to the accompanying drawings which show, by way of example only, four embodiments of a transit seal plug. In the drawings:
-
FIG. 1 is a side view of a first embodiment of transit seal plug; -
FIG. 2 is top view of the transit plug ofFIG. 1 ; -
FIG. 3 is a cross-sectional view of a container closure including the first embodiment of transit seal plug; -
FIG. 4 is a cross-sectional view of a container closure including a second embodiment of transit seal plug; -
FIG. 5 is a cross-sectional view of a container closure including a third embodiment of transit seal plug; -
FIG. 6 is a side view of a fourth embodiment of the transit seal plug; -
FIG. 7 is a top view of the transit seal plugFIG. 6 ; -
FIG. 8 is a cross-sectional view of a container closure including the fourth embodiment of the transit seal plug; and -
FIG. 9 shows three component parts of a container incorporating the first embodiment of transit seal plug. - Prior art containers for fluids for many liquid products used in the household, personal hygiene or the like are typically formed of resilient plastics materials. They are further designed to have a dispensing means which can be readily opened and closed as required. As such they are susceptible to unwanted leakage of product. The risks of this can be minimised in the house and also when carried, for example in a sports bag by careful storage. Also, during bulk transportation which is usually well-controlled, the leakage of product is normally avoided.
- However, where product is individually despatched to a user, via a postal courier service, then the risk of the container becoming orientated in the wrong position and/or being subject to a compressive force, tending to urge the liquid in the container to open the container, is increased. Spillages are not uncommon under such circumstances. The individual despatch of product is increasingly used, and has recently undergone a surge due to people subject to lockdown conditions, due to a pandemic, not physically purchasing goods at a store but instead purchasing on-line. Means of preventing this leakage happening are known in the art. For example, milk containers and sauce bottles usually include a plastic or foil disc across the neck of the bottle which is removed before use by the consumer. Such foils however are single-use, and need to be disposed of following removal. Moreover, the foils are bonded to the container neck to achieve the necessary seal. This requires specialist equipment which needs to be purchased and maintained, and needs also to be incorporated into the filling company's production line. This adds to the costs and also decreases the output speed of the production line.
- Also, plastic bottles often have a removable tab on the outside of the closure mechanism which tab is removed prior to the first use.
- The approach disclosed herein seeks a more sturdy solution which is also compatible with conventional closure designs, so avoiding the requirement to invest in expensive new tooling. Moreover, the invention described is reusable, and can be supplied ready fitted so not reducing the speed of the filling step or increasing the cost thereof.
- In its broadest aspect the invention provides a removable insert which in use is located between the neck of a container body and an outlet provided by an attached cap. The insert provided engages with the cap and is provided to a filling company already incorporated therein, and suitable simply to be attached to the filled container body. The first time a user wishes to use the product in the container, the dispensing cap is removed from the container body and the insert separated therefrom. The cap is replaced onto the container body and the insert disposed of, or alternatively stored for later replacement into the dispensing cap if desired.
- Referring initially to
FIGS. 1 and 2 these illustrate an insert in accordance with the current invention. The various elements of the transit plug, generally referenced 10, can be formed of a plastics material such as polypropylene (PP), polyethylene, such as optionally a low density polyethylene (LDPE), medium density polyethylene (MDPE), a polyethylene terephthalate (PETE), a polyhdroxyalkanoate (PHA), polylactic acid (PLA). These materials can also be conveniently utilized as recycled grades. - The
transit seal plug 10, referred to herein as a transit plug, has 3 main elements. The first is a grippingmember 11, housed within a frusto-conical recess in, and extending from a main dish-shaped, sealingportion 12. Although the sealing portion can also be planar across its width, the dish shape is preferable in order to allow the sealingportion 12 to conform with the underside face, in doing so minimizing the amount of plastic content necessary. The grippingmember 11, in use, forms an interference fit with the dispensing conduit located within the cap 62 (seeFIG. 9 ) and acts to resist separation of thetransit plug 10 and the dispensingcap 62 when such is not desired. The grippingmember 11 has 4 arms in a cross-shaped or plus sign cross-section, which enables sufficient frictional engagement with the conduit, but reduces the mass of the gripping member and the materials required for its production were a, for example, cylindrical gripping member to be used. Other shapes of gripping member can also be utilized such as spigots having other than 4 arms, or arranged in another conformation, cylindrical, spherical or other polyhedra. The gripping member can also be either solid or hollow depending on the strength or weight/materials requirement. - Extending from the opposite side of the sealing
portion 12 is apull tab 13 which a user grips hold of to remove thetransit plug 10 from the dispensingcap 62. Thepull tab 13 is generally rectangular in the illustrated embodiment, extension in the third dimension being generally far less than in the other two, and can have a roughened surface and/or include surface features to aid a user in gripping thepull tab 13. Pull tabs having different shapes from rectangular can be utilized if desired. - The sealing
portion 12 itself, in use, seats between thecap 62 and thecontainer body 60 to form a seal therebetween preventing fluid from reaching the conduit in the dispensingcap 62. In the illustrated embodiment, the transit plug has aflange 14, having an upper flange face 15 from which the grippingmember 11 extends. Theupper flange face 15 is generally planar enabling engagement with the dispensingcap 62. Thelower flange face 16 also has a planar outer annular portion to engage theupper rim 65 of theneck 63 of thecontainer body 60. Extending downwardly from thelower flange face 16 is a frusto-conical locator 17. The taper of thewall 18 of thelocator 17 assists in thetransit plug 10 passing without frictional engagement, into engagement with thecontainer body 60. Frictional engagement would possibly cause plastic dust to be produced, which should be avoided due to contamination of the product and ultimately of the environment. - In use therefore, a
transit plug 10 is secured into a dispensingcap 62 by insertion of the grippingmember 11 into the dispensing conduit within the dispensingcap 62. The frictional engagement between the grippingmember 11 and the wall of the conduit maintains the dispensingcap 62 and the grippingmember 11 in coupled separable relationship. The engagement between the grippingmember 11 and the wall of the conduit also acts to orientate the transit plug correctly. Theupper flange face 15 is pressed against theflexible leaf seal 39 of the dispensingcap 62 to form a seal. - A
container body 60 is filled with a liquid product and the cap/flange assembly secured thereto, optionally by means of a screw-threaded arrangement. In doing so, thelower flange face 16 is urged against therim 65 of thecontainer body 60 forming a seal. The seal between thetransit plug 10 and the dispensingcap 62 can also be strengthened at the same time due to the force generated by engagement. The fluid is thus more securely sealed within the container and the seals formed between thetransit plug 10 and thecontainer body 60 and dispensingcap 62 prevent leakage of the fluid from the container. - Turning to
FIG. 3 , this illustrates an assembly including the first embodiment of transit plug shown inFIGS. 1 and 2 . The assembly comprises acontainer body 30 with a disc-top dispensing cap 31 secured by a threadedconnection 32 thereto. In order to provide a transit seal therebetween atransit plug 33 is included which can be removed by a user on first use of the product. Thelower flange face 34 of theflange 35 of thetransit plug 33, sealingly engages therim 36 of theneck 37 of thecontainer body 30. Theupper flange face 38 is sealingly engaged with the circumferentially deployedflexible leaf seal 39. In order to hold the dispensingcap 31 and thetransit plug 33 together, the cross-shaped grippingmember 40 engages the dispensingconduit 41 of the dispensingcap 31. Apull tab 42 is provided to enable a user to separate thetransit plug 33 from the dispensingcap 31. -
FIG. 4 illustrates a second embodiment oftransit plug 50 for use with a flip-top dispensing cap 51. In this embodiment, engagement of thetransit plug 50 with thecontainer body 52 through the flange faces is as described above for the embodiment ofFIG. 3 , as is thepull tab 53. In this embodiment thetransit plug 50 has an upstandingtubular feature 54. Thistubular feature 54 defines a cylindrical space, and makes frictional contact on its inside diameter wall with the outside diameter wall of the dispensingcap orifice detail 55. Frictional contact ensures that thetransit plug 50 is retained to the cap. - In
FIG. 5 , a third embodiment oftransit plug 70 for use with a flip-top dispensing cap 71. In this embodiment, engagement of thetransit plug 70 with thecontainer body 72 through the flange faces is as described above for the embodiment ofFIG. 3 , as is thepull tab 73. The dispensingcap 71 includes a tubular section beneath the dispensingconduit detail 74. The transit plug has an upstandinggripping feature 75. Thegripping feature 75 forms an interference fit with the dispensingcap tubular section 74 on the inside diameter face. Thegripping feature 75 has a cross-shaped or plus sign cross-section, which enables sufficient frictional engagement with the tubular section of thecap 71, but reduces the mass of thegripping feature 75 and the materials required for its production. Other shapes of gripping feature can also be utilized such as solid or hollow cylindrical, or other polyhedra. - In
FIG. 6 , a fourth embodiment of the transit plug to use with either a disc top dispensing cap or a flip top dispensing cap is illustrated. In this embodiment the transit plug includes vent holes, comprising through apertures such as holes or slots, which serve to minimize the risk of the component becoming a choke hazard. - Because of the vent holes, the transit plug no longer provides a complete barrier to fluid flow and it is necessary to seal off the conduit of the cap, as product in the container can pass from under the transit plug to above the transit plug via the vent holes.
- The
transit seal plug 100 has three main elements. In this embodiment the grippingmember 76 is spherical in shape. This spherical form serves two functions: to block and to seal off the cap conduit, and to grip and retain theplug 100 to the dispensing cap conduit. The spherical grippingmember 76 can be either solid or hollow. - The spherical gripping
member 76 is housed within a frusto-conical recess in, and extending from, a main dish-shapedportion 77 as illustrated onFIG. 7 . Extending through the dish-shapedportion 77 are slots orholes 78 which serve to permit movement of air from one side of the dish-shapedportion 77 to the other. - Extending from the opposite side of the dish shaped
portion 77 is apull tab 79, which a user grips hold of to remove thetransit plug 100 from the dispensingcap 82. In this embodiment thepull tab 79 has a throughaperture 80, such as a hole or slot, which serves to permit movement of air from one side of the component to the other, which reduces the choke risk should thetransit plug 100 be swallowed. -
FIG. 8 illustrates an assembly including the fourth embodiment of transit plug shown inFIGS. 6 and 7 . The assembly comprises acontainer body 81 with a disc-top dispensing cap 82 secured by a threadedconnection 83 thereto. Thelower flange face 84 of the transit plug sealingly engages with therim 85 of theneck 86 of thecontainer body 81. Theupper flange face 87 is sealingly engaged with the circumferentially deployedflexible leaf seal 88. - The spherical gripping
member 76 is sealingly engaged inside the dispensingconduit 90 of the dispensingcap 82.
Claims (18)
1. A transit seal plug, the seal plug to be releasably secured to a dispensing cap, the transit seal plug comprising:
a sealing member having first and second annular sealing faces;
a gripping member extending away from a first side of the sealing member to engage walls of a conduit;
a pull tab extending from the opposite side of the sealing member, to facilitate removal of the seal plug from a dispensing cap.
2. The transit seal plug according to claim 1 , wherein the centre of the sealing member is frusto-conical in shape, in a conformation extending away from the gripping member, forming a dish-like structure to enable the sealing member to conform with the underside face.
3. The transit seal plug according to claim 2 , wherein the gripping member is housed within the frusto-conical structure.
4. The transit seal plug according to claim 1 , wherein the gripping member has a plurality of arms.
5. The transit seal plug according to claim 4 , wherein the gripping member is cylindrical in shape.
6. The transit seal plug according to claim 5 , wherein the gripping member is hollow to reduce weight.
7. The transit seal plug according to claim 1 , wherein the pull tab is rectangular in shape.
8. The transit seal plug according to claim 7 , wherein the pull tab has a roughened surface.
9. The transit seal plug according to claim 8 , wherein the pull tab has a profiled surface.
10. The transit seal plug according to claim 1 , wherein the seal plug is formed of plastics material.
11. The transit seal plug according to claim 10 , wherein the plastics material is selected from polypropylene (PP), polyethylene, a low density polyethylene (LDPE), medium density polyethylene (MDPE), a polyethyleneterephthalate (PETE), a polyhydroxyalkanoate (PHA), polylactic acid (PLA).
12. The transit seal plug according to claim 10 , wherein the plastics material is a recycled grade.
13. The transit seal plug according to claim 1 , wherein the gripping member both grips and seals to the conduit of the cap.
14. The transit seal plug according to claim 1 , wherein the sealing member includes through apertures such as holes or slots.
15. The transit seal plug according to claim 14 , wherein the gripping member is spherical.
16. The transit seal plug according to claim 14 , wherein the pull tab includes through apertures such as holes or slots.
17. A container comprising a container body, a dispensing cap having a dispensing conduit, and secured thereto and interposed therebetween in sealing arrangement, a seal plug the seal plug comprising a sealing member having first and second annular faces; a gripping member extending away from a first side of the sealing member to engage walls of the dispensing conduit a pull tab extending from the opposite side of the sealing member, to facilitate removal of the seal plug from the dispensing cap.
18. A dispensing cap/seal plug assembly, the assembly comprising a dispensing cap having a dispensing conduit, and a seal plug including a sealing member having first and second annular sealing faces; a gripping member extending away from a first side of the sealing member to engage walls of the dispensing conduit, a pull tab extending from the opposite side of the sealing member, to facilitate removal of the seal plug from the dispensing cap.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/239,123 US20220097931A1 (en) | 2020-09-25 | 2021-04-23 | Transit seal plug |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB2015197.3A GB202015197D0 (en) | 2020-09-25 | 2020-09-25 | A transit sealing plug |
GB2015197.3 | 2020-09-25 | ||
US17/112,631 US20220097922A1 (en) | 2020-09-25 | 2020-12-04 | Transit sealing plug |
US17/239,123 US20220097931A1 (en) | 2020-09-25 | 2021-04-23 | Transit seal plug |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/112,631 Continuation-In-Part US20220097922A1 (en) | 2020-09-25 | 2020-12-04 | Transit sealing plug |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220097931A1 true US20220097931A1 (en) | 2022-03-31 |
Family
ID=80823475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/239,123 Abandoned US20220097931A1 (en) | 2020-09-25 | 2021-04-23 | Transit seal plug |
Country Status (1)
Country | Link |
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US (1) | US20220097931A1 (en) |
-
2021
- 2021-04-23 US US17/239,123 patent/US20220097931A1/en not_active Abandoned
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