JP6370116B2 - Pouring cap - Google Patents

Description

  The present invention relates to a pouring cap that is attached to a mouth portion of a container that contains a liquid content such as soy sauce or dressing and is opened by pulling up a pull ring.

  A pouring cap for pouring the content liquid is attached to the mouth of the container for containing the content liquid such as soy sauce or dressing. Such a pouring cap seals the container before opening and opens (opens) the container by breaking and removing part of the partition wall by pulling up the pull ring. Pour out the liquid.

  As such a pouring cap, a barrier film made of metal foil or resin (plastic) is integrally laminated on the lower surface of the partition wall of the pouring cap (spout port cap), thereby improving the barrier property of the pouring cap before opening. Some have been improved (for example, see Patent Document 1). In such a pouring cap, when the removal portion of the partition wall is torn off by pulling up the pull ring, the barrier film layer integral with the removal portion is broken and removed together with the removal portion.

Japanese Utility Model Publication No. 4-106252

  However, in such a pouring cap, the barrier film may not be easily broken when the pull ring is pulled up due to the barrier film being easily stretched and deformed, and a large force is required to tear off the removal portion. Or even if the removal part of the partition wall is removed, the barrier film layer may remain and cannot be opened.

  Therefore, the present invention provides a pouring cap having a barrier film layer on the lower surface of a partition wall, and provides a pouring cap that can be easily opened by pulling up a pull ring while ensuring barrier properties before opening. Objective.

In order to solve the above-mentioned problem, the dispensing cap according to the present invention is a dispensing cap that has a partition wall in which a dispensing opening is formed and is attached to the mouth of a container that contains the content liquid,
The partition wall has a removal portion that is removed by breakage along a planned fracture line by pulling up a pull ring integrally connected to the upper surface of the partition wall via a connecting piece, thereby forming the dispensing opening.
On the lower surface of the partition wall, a barrier film layer laminated so as to cover the area including the removal portion and the planned fracture line,
The barrier film layer is located in the vicinity of the base end portion of the connecting piece, and has a non-penetrating slit that opens on the lower surface or the upper surface of the barrier film layer.

  ADVANTAGE OF THE INVENTION According to this invention, the extraction cap provided with the barrier film layer in the lower surface of the partition can provide the extraction cap which can be easily opened by pulling up a pull ring, ensuring the barrier property before opening. .

It is sectional drawing seen from the side surface in one Embodiment of the extraction | pouring cap according to this invention, and the elements on larger scale.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, a dispensing cap 1 according to an embodiment of the present invention includes a cap body 2, an opening / closing lid 3 and a hinge 4, and the opening / closing lid 3 is connected to the cap body 2 by the hinge 4. ing. The pouring cap 1 is made of resin, and the cap body 2, the opening / closing lid 3 and the hinge 4 are integrally formed by, for example, injection molding of a resin material. The opening / closing lid 3 and the cap body 2 can be attached by fitting with screws instead of the hinges.

  The cap body 2 includes a cylindrical outer cylinder 2a and an inner cylinder 2b arranged concentrically with each other. The outer cylinder 2a and the inner cylinder 2b are connected by a top wall 2c on one end side in the axial direction, and a mounting groove 2d that opens on the other end side in the axial direction is provided between the outer cylinder 2a and the inner cylinder 2b. The outer cylinder 2a is formed longer in the axial direction than the inner cylinder 2b, and protrudes radially inward on the inner peripheral surface of the portion protruding to the other end side in the axial direction from the inner cylinder 2b. An annular locking projection 2e is integrally provided.

The cap body 2 is inserted (plugged) into the mounting groove 2d at the tip of the mouth portion 5a of the container 5, and the locking projection 2e is undercut engaged with the projection 5b. Attached to. The container 5 to which the cap body 2 is attached is, for example, a glass or resin bottle, and contains a liquid such as soy sauce or dressing.
In addition, it can replace with the convex part 5b of the container 5 and the stop convex part 2e of the cap main body 2, and can also attach by the fitting etc. with a screw | thread.

  On the radially inner side of the inner cylinder 2 b of the cap body 2, a partition wall 2 f is integrally provided so as to cover the mouth portion 5 a of the container 5. The cap body 2 is integrally provided with an extraction cylinder 2g extending upward from the outer peripheral edge of the partition wall 2f, and the extraction cylinder 2g is formed in a cylindrical shape concentric with the cap body 2. In this embodiment, the portion of the predetermined range facing the hinge 4 side of the pouring cylinder 2g has a lower protruding height than the other parts, and the tip end portion of the pouring cylinder 2g is widened outward in the radial direction. However, the shape of the dispensing tube 2g is not particularly limited.

  In the present embodiment, the partition wall 2f has a circular flat plate shape, and the partition wall 2f is provided with a thin fracture line 2h formed in a substantially rhombus shape in plan view, and is surrounded by the fracture line 2h. The removed part is the removal part 2i. The removal portion 2i of the partition wall 2f has a connecting piece 2j extending from the upper surface with the vicinity of the outer peripheral edge on the hinge 4 side as a base end portion, and a substantially annular pull ring 2k is integrally provided at the upper end of the connecting piece 2j. It has been. Moreover, the part which removed the removal part 2i by pulling up the pull ring 2k becomes the extraction opening 6 at the time of extracting the content liquid. In addition, the shape of the planned fracture line 2h in plan view (that is, the shape of the removal portion 2i and the extraction opening 6) is not particularly limited, and may be any shape, for example, an elliptical shape, a polygonal shape, or the like. be able to. Further, in the present embodiment, the planned fracture line 2h is thinned so as to form a recess from the upper and lower surfaces of the partition wall 2f, but a configuration in which a recess is formed only on one side is also possible.

  On the lower surface side of the partition wall 2f, a barrier film layer 7 laminated so as to cover a region including the removal portion 2i and the planned fracture line 2h is integrally provided. In addition, in this embodiment, although the barrier film layer 7 has covered the whole lower surface of the partition 2f, it is not limited to this, The area | region of the barrier film layer 7 can be set arbitrarily. Further, the barrier film layer 7 can be laminated by being brought into close contact with the lower surface of the partition wall 2f by insert molding using a pre-formed flat single layer or plural layers of barrier films as an insert material, and has a thin planned breaking line. The recess formed in 2h is also formed without a gap.

  The barrier film layer 7 includes at least one barrier layer 7a made of resin or metal. The barrier layer 7a can be appropriately selected in consideration of the purpose of use such as oxygen barrier properties, carbon dioxide gas barrier properties, moisture barrier properties, and active component escape prevention properties. When the barrier layer 7a is a resin layer, examples of the material include EVOH (ethylene-vinyl alcohol copolymer resin), MX nylon, silica-deposited OPP (biaxially stretched polypropylene), alumina-deposited OPP, and PET-G. (Glycol-modified polyester (polycyclohexylene dimethylene terephthalate)) or the like can be used. Moreover, the film which consists of these resin may be used by a single layer, or can also be used as a laminated | multilayer film which laminated | stacked the several layer which consists of these materials. In this embodiment, the resin barrier layer 7a is one layer, and the entire barrier film layer 7 is linear low density from the upper side (partition wall 2f side) as shown in the enlarged view of FIG. It has a five-layer structure in which a polyethylene (LLDPE) resin layer 7b, an adhesive layer 7c, a barrier layer 7a, an adhesive layer 7d, and a linear low density polyethylene (LLDPE) resin layer 7e are laminated in this order. Furthermore, the barrier layer may be a metal foil such as an aluminum foil (aluminum laminate film). In this case, the barrier film layer 7 may be formed from, for example, a linear low density polyethylene (LLDPE) resin layer, an adhesive layer, a barrier from the partition 2f side. It can be set as the structure of 4 layers laminated | stacked in order of the layer and OP (Over Print) varnish layer.

  The barrier film layer 7 is formed with a non-penetrating slit 8 which is located in the vicinity of the base end portion of the connecting piece 2j and opens on the lower surface of the barrier film layer 7. The slit 8 may be configured to open on the upper surface of the barrier film layer 7, or may be provided with a slit 8 opened on the lower surface in addition to the slit 8 opened on the upper surface. In this embodiment, the slit 8 opens to the lower surface of the lowermost linear low density polyethylene (LLDPE) resin layer 7e and terminates with an adhesive layer 7d in front of the barrier layer 7a. In addition, the shape of the slit 8 in plan view is not particularly limited, and can be set as appropriate according to the strength of the barrier film layer 7. For example, the slit 8 extends along the planned fracture line 2 h and the width of the connecting piece 2 j It can be made into the shape which has the length equivalent to. Further, in the present embodiment, the slit 8 is formed in the vicinity of the base end portion of the connecting piece 2j and in the vicinity of the center of the bottom of the concave portion formed by the planned fracture line 2h. As shown in FIG. 1, the slit 8 is formed at a width x2 that is about twice the width x1 of the thinned portion centered on the thinnest portion of the thinned portion 2h. As shown in the AA sectional view, from the position where the maximum width of the base end of the connecting piece 2j is seen in plan view, the center axis of the cap body 2 is the center. It can be set as an inner range y of a pair of radially extending lines. The slit 8 functions as a “trigger” for facilitating breakage when the planned fracture line is torn with the pull ring 2k, and the range in which the slit 8 is provided can be freely set as long as it is within the above-described formation range. One slit or a plurality of slits 8 may be provided. Furthermore, the slit 8 is preferably formed in a range from the radial center position to the outer end in the thin portion, and according to this, the barrier film layer 7 can be easily broken.

  When the partition wall 2f is broken starting from the planned breaking line 2h by pulling up the pull ring 2k, the barrier film layer 7 is broken starting from the slit 8, and the barrier film layer 7 in the region corresponding to the removal portion 2i is removed from the removal portion 2i. It is removed with. As a result, the container 5 is opened, and an extraction opening 6 having a desired shape is formed in the partition wall 2f.

  As described above, according to the dispensing cap 1 of the present embodiment, when the partition wall 2f is broken, the barrier film layer 7 can be broken starting from the slit 8, so that it is large when the removal portion 2i is torn off. The container 5 can be easily opened by pulling up the pull ring 2k without the need for force or the removal of the removal portion 2i of the partition wall 2k without the barrier film layer 7 remaining. Further, if the slit 8 penetrates the barrier film layer 7, there is a possibility that sufficient barrier properties cannot be ensured. Therefore, in the dispensing cap 1 of the present invention, the slit 8 does not penetrate the barrier film layer 7. Thereby, the fall of the barrier property before opening can be suppressed.

  Further, in the dispensing cap 1 of the present invention, it is preferable that the slit 8 opens on the lower surface of the barrier film layer 7 and is terminated before the barrier layer 7a or at the lower surface of the barrier layer, According to this, it becomes possible to ensure the expected barrier property more reliably. Furthermore, the slit 8 is preferably formed along the planned fracture line 2h at the position of the recess formed by the planned fracture line 2h. According to this, the barrier film layer 7 is more reliably broken and removed. It becomes possible to remove together with the part 2i.

  The dispensing cap according to the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope according to the claims. For example, in the above embodiment, the cap body 2 is configured to be fitted to the mouth portion 5a of the container 5 by undercutting, but may be configured to be engaged and held by other means such as screwing or press fitting.

DESCRIPTION OF SYMBOLS 1 Outflow cap 2 Cap body 2a Outer cylinder 2b Inner cylinder 2c Top wall 2d Groove 2e Locking convex part 2f Bulkhead 2g Outlet cylinder 2h Planned break line 2i Removal part 2j Connection piece 2k Pull ring 3 Opening / closing lid 4 Hinge 5 Container 5a Mouth Part 6 Discharge opening 7 Barrier film layer 8 Slit

Claims (1)

A dispensing cap that has a partition wall in which a dispensing opening is formed and is attached to the mouth of a container that contains the content liquid,
The partition wall has a removal portion that is removed by breakage along a planned fracture line by pulling up a pull ring integrally connected to the upper surface of the partition wall via a connecting piece, thereby forming the dispensing opening.
On the lower surface of the partition wall, a barrier film layer laminated so as to cover the area including the removal portion and the planned fracture line,
The barrier film layer is located near the proximal end of the connecting piece, it has a non-through slits which open to the lower surface or upper surface of the barrier film layer,
The barrier film layer is composed of a plurality of layers including at least one barrier layer made of resin or metal,
The dispensing cap , wherein the slit terminates in front of the barrier layer .

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