JP6164606B2 - Container with cap - Google Patents

Description

The present invention relates to a stoppered capped Tsukeyo device by capping the container with a screw cap or the like beverage is screwed.

  As a cap to be attached to a container made of steel or aluminum alloy, a cap having a metal cap body and a liner provided on the inner surface of the top plate portion of the cap body is known, and when the cap is closed The liner contacts the top of the base of the container so that the inside can be sealed.

  In a cap provided with such a liner, conventionally, an in-shell mold type that forms a liner with a predetermined shape by dropping a heated resin ball on the inner surface of the top surface of the cap body and embossing with a molding die The metal cap was the mainstream. However, since such a cap bonds the top surface portion of the cap body and the liner, the cap portion of the container and the liner rub against each other at the time of opening and the torque becomes very high, making it difficult to open the cap. It was a problem.

Then, like patent document 1, the hook part (bending part) which protruded and formed inside is provided in the side part near the top | upper surface part (top plate part) of a cap main body, and the liner shape | molded in the sheet form is made into a cap main body. Locking is done. Therefore, the liner is attached to the cap main body by being disposed between the hook portion and the inner surface of the top surface portion without being bonded to the inner surface (top surface) of the top surface portion. Moreover, in patent document 1, a liner is comprised by the sliding layer and the soft layer, and after inserting hard sheets, such as a polypropylene used as a sliding layer, into this cap liner, this liner is a sealing layer on the hard sheet. It is described that a resin (soft layer) such as an elastomer is formed by molding.
In such a cap, in the process of opening the container with the cap, at the beginning of the opening, the sealing layer of the liner is in intimate contact with the opening end of the mouthpiece of the container, and the sliding layer of the liner and the top surface of the cap body Since the cap body is opened by sliding, the torque at the time of opening can be drastically reduced.

JP 2008-213039 A

  However, in the initial stage of opening the container with a cap, the cap sometimes rotated with a slight resistance before the cap was lifted along the lead angle of the threaded portion of the base part and the cap bridge was cut. . Although this rotation has no particular problem in quality, it has been a problem that the user feels uncomfortable that the container is not sealed.

The present invention has been made in view of such circumstances, and can maintain the torque at the time of container opening at a relatively low state and prevent rotation by a minute torque at the initial stage of opening the container. and to provide a cap Tsukeyo instrument can.

The present invention is a container with a cap that includes a container and a cap that seals the container, and the cap includes a top surface portion and a cylindrical portion that is substantially suspended from the periphery of the top surface portion; A liner provided in a non-adhered state on the inner surface of the top surface portion, and in the vicinity of the top surface portion of the cylindrical portion, a lower portion is radially inward from a notch formed along a circumferential direction of the cylindrical portion. a plurality of hook portions are formed, a state where the molding to squeeze the periphery of the top surface portion is tightened around the said container projecting radially inwardly to lock the liner by pushing, outside said liner A peripheral end surface is provided in contact with at least a part of the hook portion, and the liner is disposed on the inner surface side of the top surface portion and slides on the top surface portion, and is laminated on the sliding layer. Softer than the sliding layer Size is small, and a sealing layer in contact with the container, the end face of the outer peripheral edge of said liner, and wherein the end face der Rukoto of the outer peripheral edge of said sliding layer.

Since the liner and the cap body are provided in a non-bonded state, the torque at the time of opening can be maintained in a relatively low state.
In addition, by using a hook portion that locks the liner to the cap body and tightening at least a portion of the hook portion and the end surface of the liner in contact with each other, the frictional force can be slightly increased at this contact portion. it can. Therefore, the torque at the time of opening can be maintained in a relatively low state, and the cap can be prevented from rotating by a slight resistance at the initial stage of opening.

In the container with a cap according to the present invention, the hook portion that contacts the end surface of the liner among the hook portions may be provided closer to the top surface portion than the other hook portions.
By arranging a part of the hook portion close to the top surface portion, the end surface of the liner and a part of the hook portion are brought into contact with each other in a state where the cap is wound around the container. In this case, the resistance between the liner and the cap can be increased with a simple configuration. Further, by increasing or decreasing the number of hook portions that come into contact with the liner, the magnitude of the resistance can be finely adjusted.

In addition, a hard and slidable sliding layer is provided on the side in contact with the cap body, and a soft sealing layer is provided on the side in contact with the container. In addition to being able to slide between them, it is possible to open the plug with a small force, and it is possible to maintain a sealed state with the sealing layer before opening.
In addition, since only the end face of the outer peripheral edge of the sliding layer of the liner is brought into contact with the hook portion, the contact area can be reduced, and the opening of the cap-equipped container is hindered. It is possible to prevent a large resistance.

The cap used in the present invention has a cap body including a top surface portion, a cylindrical portion that is substantially suspended from the periphery of the top surface portion, and a liner provided in an unbonded state on the inner surface of the top surface portion, A plurality of hooks that protrude radially inward and engage the liner by pushing a lower portion radially inward from a notch formed along the circumferential direction of the cylindrical portion in the vicinity of the top surface portion of the cylindrical portion. A portion is formed, and at least one hook portion of the hook portions may be provided closer to the top surface portion than the other hook portions .

  According to the present invention, the torque at the time of opening the container can be maintained in a relatively low state, and it can be prevented from rotating by a minute torque at the initial stage of opening the container.

It is a fragmentary sectional view which shows the bottle can with a cap of embodiment of this invention, (a) displays the part of the hook part which contacts a liner, (b) displays the part of the hook part which does not contact a liner. It is a fragmentary sectional view which shows the cap before winding around a bottle can. It is A arrow directional view (plan view) of the cap shown in FIG. It is the principal part top view which expanded FIG. It is principal part sectional drawing of the cap before winding up on a bottle can, and is a figure explaining shaping | molding of the sealing layer of a liner. It is the principal part side view which fractured | ruptured the cap of the bottle can with a cap.

Hereinafter, embodiments of a container with a cap and a cap according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 6, the container with a cap of the present embodiment includes, for example, a 38 mm diameter aluminum or aluminum alloy (metal) bottle can 2 (container in the present invention) and the bottle can 2. It is set as the bottle can 1 with a cap which consists of the cap 3 used as the pill fur-proof cap (henceforth also called PP cap) which is mounted | worn with the cap part 21 of this, and seals tightly.

The cap 3 shown in FIG.1 and FIG.6 has mounted | wore with the bottle can 2 what shape | molded the aluminum or aluminum alloy board | plate material in the cup shape, As shown in FIGS. The cap body 4 includes a top surface portion 41 and a cylindrical portion 42 that is substantially suspended from the periphery of the top surface portion 41, and the liner 5 is provided on the inner surface of the cap body 4 in an unbonded state.
The liner 5 is formed so as to contact the base portion 21 when the bottle can 2 is closed by the cap 3 and seal the inside of the bottle can 2, and is disposed on the inner surface side of the top surface portion 41. The sliding layer 51 includes a sliding layer 51 and a sealing layer 52 that is laminated on the sliding layer 51 directly or through an intermediate layer such as a barrier layer and is softer than the sliding layer 51 and has a smaller outer diameter. Details of the liner 5 will be described later.
Further, the cylindrical portion 42 of the cap body 4 has a cylindrical upper portion 44 and a cylindrical lower portion 45 that are vertically divided through slits 43 that are intermittently formed in the circumferential direction on the lower end surface thereof, and adjacent slits 43. The cylinder upper part 44 and the cylinder lower part 45 are connected to each other by a plurality of bridges 43a formed therebetween.

  As shown in FIG. 6, a bulging portion 22 projecting radially outward is formed at the lower end portion of the cap portion 21 of the bottle can 2 to which the cap 3 is attached, and the bottle side is located above the bulging portion 22. A curled portion 24 formed by rounding an opening end portion is formed above the screw portion 23 and the bottle side screw portion 23. The cap 3 placed on the cap part 21 presses the cylindrical part 42 inward with, for example, a screw roller (not shown) so as to follow the shapes of the bulging part 22, the bottle-side screw part 23, and the curl part 24. This causes plastic deformation. As a result, the cap-side threaded portion 46 is formed, and the cap 3 attached to the base portion 21 has the lower end portion of the cylindrical portion 42 locked to the lower surface of the bulging portion 22 and the liner 5 is pressed against the curled portion 24. Thus, the bottle can 2 is hermetically sealed to form a bottle can 1 with a cap.

As shown in FIG. 2, the cylindrical portion 42 of the cap body 4 has a plurality of knurl recesses 11 arranged in the circumferential direction in the vicinity of the top surface portion 41, and an opening portion 12 for releasing the internal pressure when the cap is opened, and the liner 5. A plurality of hook portions 13 to be locked are formed.
The knurl recess 11 and the hook portion 13 have a concave shape on the outer peripheral surface of the cylindrical portion 42, and these are arranged at an interval to form an uneven surface on the outer peripheral surface of the cylindrical portion 42. The frictional resistance between the finger gripping the cap 3 can be increased. Thereby, it becomes possible to hold | grip without sliding a hand and it can open easily.

The hook portion 13 is formed by pushing the lower portion of the cut formed along the circumferential direction of the cylindrical portion 42 inward in the radial direction. As shown in FIGS. 3 and 4, the hook portion 13 is radially inward. It is formed to project in a chevron shape (V shape). The opening 12 is formed by opening the cut.
Further, as shown in FIG. 2, the upper end surface 15 of the hook portion 13 is formed at a position separated from the inner surface of the top surface portion 41 by at least the thickness of the sliding layer 51 constituting the liner 5. An inscribed circle C (FIG. 3) constituted by each hook portion 13 is set to be smaller than the outer diameter of the sliding layer 51 of the liner 5, and this sliding layer 51 is the upper end surface 15 of the hook portion 13. The liner 5 is attached to the cap body 4 by being disposed between the inner surface of the top surface portion 41 and the inner surface of the top surface portion 41. As shown in FIG. 2, among the plurality of hook portions 13, at least one hook portion 13 s is provided closer to the top surface portion 41 than the other hook portions 13.
The opening 12 functions as a vent hole for releasing the gas inside the bottle can 2 to the outside when the cap 3 is rotated while breaking the bridge 43a.

As described above, the liner 5 has a multilayer structure including the sliding layer 51 and the sealing layer 52 laminated on the sliding layer 51 directly or via an intermediate layer such as a barrier layer.
The sliding layer 51 is a disk-shaped hard sheet formed of polypropylene or the like. The sealing layer 52 is formed of an elastomer resin or the like and has a sealing function. As shown in FIG. 3, the sealing layer 52 is formed in a circular shape that is coaxial with the sliding layer 51 and has a small diameter. In addition, the sealing layer 52 is formed such that an outer peripheral portion 54 that is in close contact with the cap portion 21 of the bottle can 2 is thicker than the central portion 55.

As shown in FIG. 5, the sealing layer 52 is inserted into the cap body 4 and the sliding layer 51 is inserted into contact with the inner surface of the top surface portion 41, and then the mold M for molding is inserted into the cap body. It is formed by inserting into 4 and molding an elastomer resin or the like.
The sliding layer 51 is attached to the cap body 4 by inserting the sliding layer 51 from above in a state where the cap body 4 is placed with the opening end portion facing upward. At this time, the end surface 53 (outer peripheral edge) of the sliding layer 51 comes into contact with the hook portion 13, and the end surface 53 of the sliding layer 51 climbs over the hook portion 13 and is assembled by further pushing the sliding layer 51 downward. It is done. Further, when the mold M for molding is inserted, the tip of the hook portion 13 serves as a guide for the mold M, and the centering (positioning) of the mold M is performed.
Note that the thickness of the liner 5, the outer diameter of the sliding layer 51 constituting the liner 5, the outer diameter of the sealing layer 52, and the like are determined according to the dimensions of the cap body 4.

Further, the bottle can 1 with a cap according to the present embodiment is in a state where the cap 3 is wound around the base portion 21 by performing the capping process in a state where the cap 3 is put on the base portion 21 of the bottle can 2. To be attached.
The capping process of the cap 3 is performed using a capping device including a pressure block, a screw roller, a skirt roller, and the like. That is, the top surface portion 41 of the cap body 4 placed on the base portion 21 is pressed toward the bottom of the bottle can 2 by the pressure block P as shown by the two-dot chain line in FIGS. In this state, the stepped portion 48 is formed on the shoulder portion of the cap 3 by performing a drawing process using a pressure block.
Further, in this state, a cap-side screw portion 46 is formed by a screw roller (not shown), and a pilfer proof portion 47 is wound around the bulging portion 22 of the base portion 21 by a skirt roller (not shown), thereby performing capping processing. Is done. In this case, the bottle side screw part 23 and the bulging part 22 are formed in the cap part 21 of the bottle can 2 to which the cap 3 (cap body 4) is attached. The cap side screw part 46 and the pill fur proof part 47 are plastically deformed so as to follow the shapes of the bottle side screw part 23, the bulging part 22 and the like. As a result, the cap 3 is attached to the cap portion 21 of the bottle can 2 and the bottle can 2 is sealed.

  At this time, the liner 5 is inserted and arranged inside the top surface portion 41 of the cap body 4 as described above, and the opening of the bottle can 2 is sealed by the liner 5. When the cap 3 after capping is wound around the bottle can 2, as shown in FIG. 1A, the sliding layer of the liner 5 provided to overlap the hook portion 13 in the radial direction. The end surface 53 of 51 is provided in contact with one hook portion 13 s provided in the vicinity of the top surface portion 41 of the cap body 4. In addition, as shown in FIG.1 (b), the end surface 53 of the liner 5 is arrange | positioned ensuring a clearance gap in the state which does not contact other hook parts 13 other than the hook part 13s.

In the bottle can 1 with the cap configured as described above, when the cap 3 is rotated to open the cap 3, the tube upper portion 44 in which the cap side screw portion 46 is formed extends along the bottle side screw portion 23 of the bottle can 2. Rotates while lifting upwards. On the other hand, the cylinder lower part 45 in which the pilfer proof part 47 is formed is locked to the bulging part 22 of the bottle can 2 and rotates without being lifted together with the cylinder upper part 44.
At this time, the bridges 43a to which the upward pulling force and the circumferential pulling force (frictional force) are applied are sequentially and independently broken. And when each bridge | bridging 43a fractures | ruptures, the cylinder upper part 44 and the cylinder lower part 45 of the cap 3 are parted. Thereafter, the tube upper part 44 of the cap 3 can be detached from the bottle can 2 and opened by further rotating the tube upper part 44 with respect to the bottle side screw part 23 of the cap part 21. On the other hand, the cylindrical lower portion 45 of the cap 3 is left in the bottle can 2 as a ring-shaped pill fur proof portion 47.

  In the bottle with cap 1 and the cap 3 of the present invention, the liner 5 and the cap body 4 are provided in a non-bonded state, so that the torque at the time of opening can be maintained in a relatively low state. Further, by using the hook portion 13 for locking the liner 5 to the cap body 4, at least a part of the hook portion 13 s and the end surface 53 of the liner 5 are brought into contact with each other, and the friction is generated at this contact portion. The power can be slightly increased. Therefore, the torque at the time of opening can be maintained in a relatively low state, and the cap 3 can be prevented from rotating by a slight resistance at the initial stage of opening.

  In addition, in the state where the cap 3 is wound around the bottle can 2 by arranging a part of the hook portions 13 s of the hook portions 13 provided in the cap body 4 close to the top surface portion 41, the liner 5 The end surface 53 and a part of the hook portion 13s are brought into contact with each other. For this reason, the resistance between the liner 5 and the cap 3 can be increased with a simple configuration. Further, by increasing or decreasing the number of hook portions 13s that come into contact with the liner 5, it becomes possible to finely adjust the magnitude of the resistance, and the resistance necessary to prevent the rotation of the cap 3 at the initial stage of opening the cap is reduced. It can be added appropriately.

Further, the liner 5 is provided with a hard and slippery sliding layer 51 on the side in contact with the cap body 4 and a soft sealing layer 52 on the side in contact with the bottle can 2. 5 can be slid between the sliding layer 51 and the cap body 4 and can be opened with a small force, and the sealed state can be maintained well by the sealing layer 52 before opening.
In addition, since only the end face 53 of the sliding layer 51 of the liner 5 is brought into contact with the hook portion 13s, the contact area can be reduced, and the opening of the bottle can 1 with cap is inhibited. It is possible to prevent such a large resistance.

In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, in the above-described embodiment, the configuration is such that one hook portion 13s and the end surface 53 of the liner 5 (sliding layer 51) are in contact with each other, but a plurality of hook portions 13s are provided, and the hook portions 13s and the liner 5 It is good also as a structure which contacts an end surface.
In addition, the plurality of hook portions 13 provided in the cylindrical portion 42 are all formed so that the distance from the top surface portion 41 is the same, and the liner 5 is formed in a shape in which the end surface partially protrudes. Thus, the end surface of the protruding portion of the liner and the hook portion 13 can be brought into contact with each other. Or it can also be set as the structure which combined both the structure which provides the hook part 13s of the hook part 13 in the vicinity of the top | upper surface part 41, and the structure which made the shape which protruded a part of the liner 5. FIG.
Whichever is adopted, the end surface of the liner 5 can be provided in contact with at least a part of the hook portion 13 in a state where the cap 3 is wound around the bottle can 2. The frictional force can be slightly increased.

The liner 5 is configured by laminating a sealing layer 52 having an outer diameter smaller than that of the sliding layer 51. However, the outer shapes of the sliding layer 51 and the sealing layer 52 are formed with the same size, and end faces thereof are formed. It can also be set as the structure contacted with the hook part 13s.
Further, the bottle can with cap and the cap attached to the bottle can have been described, but the container of the container with cap referred to in the present invention is not limited to the bottle can, and in addition to the bottle can, a glass bottle or PET Containers such as bottles are also included.

1 Bottle can with cap (container with cap)
2 Bottle cans (containers)
3 Cap 4 Cap body 5 Liner 11 Knurl recess 12 Opening portion 13 and 13s Hook portion 15 Upper end surface 21 Base portion 22 Swelling portion 23 Bottle side screw portion 24 Curl portion 41 Top surface portion 42 Cylindrical portion 43 Slit 43a Bridge 44 Tube upper portion 45 Cylinder lower part 46 Cap side thread part 47 Pill fur proof part 48 Step part 51 Sliding layer 52 Sealing layer 53 End face 54 Outer part 55 Center part

Claims (2)

A cap-equipped container including a container and a cap for sealing the container, wherein the cap includes a top surface portion, and a cap main body including a cylindrical portion substantially suspended from a peripheral edge of the top surface portion, and the top surface portion. A liner provided in a non-adhered state on the inner surface of the cylindrical portion, and by pushing a lower portion radially inward from a notch formed along the circumferential direction of the cylindrical portion in the vicinity of the top surface portion of the cylindrical portion. A plurality of hook portions protruding inward in the direction to lock the liner are formed, and in the state where the outer periphery of the top surface portion is drawn and wound around the container, the end surface of the outer peripheral edge of the liner is Provided in contact with at least a portion of the hook portion ;
The liner is disposed on the inner surface side of the top surface portion and slides on the top surface portion, and is laminated on the slide layer and is softer and smaller in outer diameter than the sliding layer and contacts the container. A sealing layer,
The end face of the outer peripheral edge of the liner is capped container, wherein the end face der Rukoto of the outer peripheral edge of said sliding layer.   2. The container with a cap according to claim 1, wherein, of the hook portions, a hook portion that comes into contact with an end surface of the liner is provided nearer the top surface portion than other hook portions.

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