Cap with inner lid

Abstract

To provide a cap with inner lid which can easily shift from a cap body side to a lid member side by a lid opening operation.SOLUTION: A cap with inner lid includes: a cap body 2 in which a discharge port 23 is disposed on a top wall 8; and a lid member 30 for covering an upper side of the cap body 2. An inner lid 24 for discharge port closing mounted on the cap body 2 is formed so as to move to the lid member 30 side by a lid opening operation of the lid member 30. The discharge port 23 is formed at a main film part 22 assembled on the top wall 8 in an unpeelable manner, by being communicated with an opening hole 16 provided at the top wall 8. The inner lid 24 includes a sub film part 25 attached to an upper surface of the main film part 22 in an unpeelable manner. At a connection part 38 provided hanging from a rear side of the lid member 30, the sub film part 25 is attached by a lid opening operation in a manner unpeelable from the main film part 22. A film-like knob part 28 may be continued to the sub film part 25.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cap with an inner lid. [Background technology]

[0002] There are known caps in which an inner lid covering a discharge port of a cap body moves from the cap body side to the lid member side when the cap is opened. For example, the cap in Cited Document 1 has a closure plate for closing the discharge port connected to the edge of the discharge port provided on the top wall of the cap body via a breaking line, and the tip of a connecting tube hanging from the back side of a lid hinged to the cap body is connected to the closure plate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2005-289389 Summary of the Invention [Problem to be solved by the invention]

[0004] In the device of Patent Document 1, when the lid is opened, the closing plate is pulled up via the connecting tube, opening the discharge port, but users complain that the closing plate is difficult to remove and that the contents splash out, resulting in a poor usability.Furthermore, due to insufficient connection strength, the closing plate may separate from the connecting tube and remain on the cap body.

[0005] The first object of the present invention is to provide a cap with an inner lid that can be easily moved from the cap body side to the lid member side by opening the lid, and the second object is to make it possible to forcibly remove the inner lid by a separate operation if the inner lid cannot be removed by the operation. [Means for solving the problem]

[0006] The first means comprises a cap body 2 having a discharge port 23 on a top wall 8; and a lid member 30 that covers the upper side of the cap body 2. In the cap with inner lid, the inner lid 24 for closing the discharge port attached to the cap body 2 is formed so as to move to the lid member 30 side by the lid opening operation, The discharge port 23 is formed in a main film portion 22 that is inseparably attached to the top wall 8 and communicates with an opening 16 provided in the top wall 8, The inner lid 24 includes a sub-membrane portion 25 releasably attached to the upper surface of the main membrane portion 22, The sub-membrane portion 25 is adhered to a connecting portion 38 hanging down from the rear side of the lid member 30 so as to be peelable from the main membrane portion 22 by the lid opening operation.

[0007] In this method, for a type of cap in which an inner lid 24 that blocks the discharge outlet 23 of the cap body 2 moves toward the lid member 30 when the lid member 30 is opened, as shown in Figure 1 (A), an opening 16 provided in the top wall 8 of the cap body 2 is covered with a main membrane portion 22 with a discharge outlet 23, and the inner lid 24 is placed on top of this main membrane portion 22. The inner lid 24 includes a sub-membrane portion 25 removably attached to the upper surface of the main membrane portion 22, and a connecting portion 38 hanging down from the back side of the lid member 30 is adhered to this sub-membrane portion 25. According to this structure, when the cover member 30 is opened, the sub-membrane portion 25 can be easily moved to the cover member 30 side.

[0008] The second means has the first means, and the inner lid 24 is a membrane-like lid consisting of the sub-membrane portion 25 and a membrane-like knob portion 28 connected to this sub-membrane portion 25, and a connecting portion 38 hanging down from the back side of the lid member 30 is adhered to the sub-membrane portion 25.

[0009] 1(A), the inner lid 24 is a membrane-like lid consisting of the sub-membrane portion 25 and a membrane-like knob portion 28 connected to the sub-membrane portion 25. A connecting portion 38 extending downward from the back side of the lid member 30 is adhered to the sub-membrane portion 25. According to this structure, even if the sub-membrane portion 25 cannot be peeled off by opening the lid member 30, the sub-membrane portion 25 can be forcibly removed by pulling the knob portion 28, and the discharge port 23 can be opened.

[0010] The third means has the second means, and the gripping portion 28 is a tab-shaped membrane piece protruding from the secondary membrane portion 25 via the connecting end portion 27, and the main membrane portion 22, the secondary membrane portion 25 and the gripping portion 28 are incorporated into the cap body 2 in a stacked state.

[0011] In this embodiment, the gripping portion 28 is a tab-shaped membrane piece protruding from the sub-membrane portion 25 via the connecting end portion 27, as shown in Figure 2(A). The main membrane portion 22, the sub-membrane portion 25, and the gripping portion 28 shown in Figure 2(B) are incorporated into the cap body 2 in a stacked state. According to this structure, the main membrane portion 22, the sub-membrane portion 25, and the knob portion 28 can be easily disposed in the cap body 2 by insert molding.

[0012] The fourth means has the third means, and the gripping portion 28 is folded back onto the upper side of the sub-membrane portion 25 using the connecting end portion 27 formed on a part of the peripheral edge 26 of the sub-membrane portion 25 as a fold.

[0013] In this means, the gripping portion 28 is folded back onto the upper side of the sub-membrane portion 25 at a connecting end portion 27 formed on a part of the peripheral edge 26 of the sub-membrane portion 25 as a fold, as shown in FIG. 2(A). With this structure, when the gripping portion 28 is pulled up as shown by the solid line in Figure 4(B), the peeling of the sub-membrane portion 25 from the main membrane portion 22 starts at point P (see Figure 1(B)) directly below the connecting end portion 27. Therefore, the pulling force from the gripping portion 28 can be efficiently applied to the peeling start point P, so the sub-membrane portion 25 can be easily peeled off.

[0014] The fifth means has any one of the first to fourth means, and has a plurality of connecting portions 38 protruding from the back side of the lid member 30, and by adhering the sub-membrane portion 25 to the tip portions 39 of these connecting portions 38, the inner lid 24 is connected to the lid member 30 in a scattered manner.

[0015] In this method, the inner lid 24 is connected to the lid member 30 in a scattered manner (see Figure 2(A)) by adhering the sub-membrane portion 25 to the tip portions 39 of multiple connecting portions 38 protruding from the back side of the lid member 30. This structure ensures a more reliable connection force than when sub-membrane portion 25 is connected to lid member 30 at one point. Also, a place for knob portion 28 can be secured between the scattered connection points, and knob portion 28 can be positioned neatly so as not to interfere with the placement of connecting portion 38.

[0016] The sixth means includes the fifth means, and the lid member 30 is connected to the cap body 2 via a hinge portion 7; The knob portion 28 protrudes from the connecting end portion 27 located near the hinge portion 7 in a direction away from the hinge portion 7, As the connecting portion 38, a distal connecting portion 38A far from the hinge portion 7 is arranged at the tip of the knob portion 28 in the protruding direction, and a pair of proximal connecting portions 38B close to the hinge portion 7 are arranged on both sides of the knob portion 28 in the width direction.

[0017] In this means, as shown in FIG. 2(A), the knob 28 protrudes from the connecting end 27 located near the hinge 7 in a direction away from the hinge 7. As the connecting portion 38 for the sub-membrane portion 25 shown in Figure 1(A), a distal connecting portion 38A far from the hinge portion 7 is arranged at the tip of the knob portion 28 in the protruding direction, and a pair of proximal connecting portions 38B close to the hinge portion 7 are arranged on both sides of the knob portion 28 in the width direction. According to this structure, a lifting force can be applied evenly to the sub-membrane portion 25 via the distal connecting portion 38A and the proximal connecting portion 38B. [Effects of the Invention]

[0018] According to the present invention, in a cap with an inner lid, the inner lid can be easily moved from the cap body side to the lid member side by opening the lid. Also, if the inner lid cannot be removed by opening the lid, the inner lid can be forcibly removed by a separate operation. [Brief explanation of the drawings]

[0019] [Figure 1] 1A and 1B show the structure of a closed lid configuration of a cap with an inner lid according to an embodiment of the present invention, in which FIG. 1A is a cross-sectional view seen from the side, and FIG. 1B is an enlarged view of a portion thereof. [Figure 2] 2A and 2B show the structure of the cap in FIG. 1 in an open state during manufacture, with FIG. 2A being a plan view and FIG. 2B being a cross-sectional view seen from the side. [Figure 3] 2 shows the structure of the cap in FIG. 1 in an open state after the cap opening operation has been performed, in which FIG. 2(A) is a plan view and FIG. 2(B) is a cross-sectional view seen from the side. [Figure 4] 2A and 2B are explanatory diagrams of the operation of the cap of FIG. 1, in which FIG. 2A is a diagram showing the lid-opening operation in progress, and FIG. 2B is an explanatory diagram showing the operation of removing the inner lid remaining on the cap body side after the lid-opening operation. BEST MODE FOR CARRYING OUT THE INVENTION

[0020] 1 to 4 show a cap with an inner lid according to an embodiment of the present invention. 1(A), this cap is to be attached to the mouth / neck portion 102 of a container body 100 that stores liquid or the like, and is formed of a cap body 2 and a lid member 30. Each of these members can be molded from, for example, synthetic resin.

[0021] The cap body 2 has a top wall 8 attached to the upper end of an attachment tube 4 for externally fitting onto the mouth / neck portion 102, and a discharge outlet 23 is provided above the top wall 8. This discharge outlet 23 is opened in a main membrane portion 22 (described below) that covers an opening 16 provided in the top wall 8, and is closed by a sub-membrane portion 25 (described below) that is releasably attached to the main membrane portion 22. In addition, publicly known aspects of the configuration of the cap body 2 will be briefly explained.

[0022] The attachment tube 4 is fitted to the mouth / neck portion 102, and the outer surface of the attachment tube 4 in the illustrated example is provided with a locking rib i that locks with a rib receiving portion j of the mouth / neck portion 102. However, instead of this structure, the attachment tube 4 may be screwed onto the mouth / neck portion 102. In the illustrated example, the upper end of the mounting tube 4 is connected to the lid member 30 via a hinge portion 7. This structure can be modified as appropriate; for example, the lid member 30 may be engaged with the mounting tube 4 by thread engagement or undercut engagement. 2(A), 6 denotes a deep groove formed in the attachment tube 4, f denotes a circumferential break line formed at the bottom end of the deep groove, and g denotes a vertical break line continuing from the circumferential break line. These are conventionally known structures for removing the cap body 2 from the mouth / neck portion 102.

[0023] The top wall 8 is a partition for covering the upper surface of the mouth / neck portion 102, and a large-diameter dispensing tube 12 is erected from its upper surface and is concentric with the mounting tube 4 when viewed from above, and a large-diameter opening 16 is drilled inside this dispensing tube 12. The opening 16 in the illustrated example is circular when viewed from above, but its shape can be changed as appropriate. Between the opening 16 and the discharge port 23, an inward flange 11 protruding from the lower end side of the pouring tube 12 is provided as an adhesive area (adhesion margin) for the main membrane portion 22 described below. However, the shape of the adhesive area can be changed as appropriate. In the illustrated example, the inner central portion (inward flange 11) of the top wall 8 is formed as a high step portion, and the outer peripheral portion 9 thereof is formed as a low step portion, with the annular step portion 10 shown in Figure 1(A) as the boundary. A fitting tube 14 is provided vertically from the underside of the outer peripheral portion 9 to fit onto the inner surface of the mouth / neck portion 102. Also, a ring-shaped locking portion m is provided vertically from the upper surface of the outer peripheral portion 9 to be locked into a locking recess n on the inner surface side of the lid peripheral wall 34, which will be described later.

[0024] In this embodiment, the inward flange 11 is provided with a membrane stack 20 formed by stacking a main membrane portion 22, a sub-membrane portion 25, and a membrane-like tab portion 28 from bottom to top. This film laminate 20 can be incorporated into the cap body 2 by a method such as insert molding. The main film portion 22 and the sub-film portion 25 are made of polyethylene or adhesive resin (for example, product name: Modic, Mitsubishi Chemical Corporation). In this specification, the terms "main" and "secondary" are used only to distinguish between the two membrane portions (film portions). In this specification, the term "membrane" refers to a thin material that has the property of not allowing the content liquid to pass through (liquid-blocking properties), and includes a film. The aforementioned sub-membrane portion 25 and membrane-like gripping portion 28 are connected to each other via a connecting end portion 27 described below, and form an inner lid 24 which is a membrane-like lid (a film lid in the illustrated example). However, the tab 28 may be omitted and the inner lid 24 may be formed only by the sub-membrane portion 25. In the following description, the "main film portion" will be referred to as the main film portion, and the "sub-film portion" will be referred to as the sub-film portion. Please note that the drawings of this application exaggerate the thickness of the film portion for convenience of drawing. In this embodiment, the inner lid 20 is part of the film laminate 20, so the secondary film portion 25 is easily peeled off from the main film portion 22, and the main film portion 22 can be fixed to the inward flange 11 of the cap body 2 so as not to peel off. If only the auxiliary film portion 25 were to be fixed directly to the inward flange and transferred to the lid member, it would be necessary to make it difficult to peel off in order to seal the periphery of the opening 16. This would make it difficult to transfer the auxiliary film portion 25 to the lid member 30 side.

[0025] In this embodiment, the main film portion 22 is fixed to the inward flange 11 so as to cover the opening 16 . The main film portion 22 in the illustrated example is circular when viewed from above, and is fixed liquid-tightly with a uniform adhesive width around its entire periphery to the upper surface of the inward flange 11. However, the shape of the main film portion 22 can be modified as appropriate. The method of fixing is preferably adhesion by insert molding as described above, but other methods of fixing may also be used. 3(A), the main film portion 22 is formed with a discharge port 23 having an opening area smaller than that of the aperture 16 when viewed from above. The discharge port 23 in the illustrated example is formed long and extends in a direction perpendicular to the rotation axis O of the lid member 30. However, the shape of the discharge port 23 can be changed as appropriate.

[0026] The auxiliary film portion 25 is removably attached to the upper surface of the main film portion 22, and in this attached state, closes the discharge port . The illustrated auxiliary film portion 25 has the same contour and outer diameter as the main film portion 22 when viewed from above. A connecting portion 38 (described below) is connected to a portion of the upper surface U of the auxiliary film portion 25 (referring to the upper surface when the lid is closed), and is configured so that when the lid member 30 is opened, the auxiliary film portion 25 can be pulled up and peeled off from the main film portion 22. However, this configuration can be modified as appropriate. A part of the peripheral edge 26 of the secondary film portion 25 is formed into a connecting end 27 that also serves as a fold line for connecting a tab portion 28, which will be described later. This connecting end 27 is designed to have sufficient strength to peel the secondary film portion 25 from the main film portion 22. In the illustrated example, the connecting end 27 is disposed at a position on the peripheral edge 26 closer to the hinge portion 7, as shown in Figure 2(A). However, this position can be changed as appropriate. For example, it may be disposed on the opposite side of the hinge portion 7. In addition, the sub-film portion 25 has flexibility and pliability to the extent that it bends and curls up from the peel start point P side as shown by the imaginary lines in FIG. 4(B) when the tab portion 28 is pulled up as described below.

[0027] The gripping portion 28 is a means for forcibly peeling off the auxiliary film portion 25 that remains on the cap body 2 side in the open state when the auxiliary film portion 25 cannot be peeled off from the main film portion 22 by the lid-opening operation. The knob 28 is not connected to a connecting portion 38, which will be described later. In this embodiment, the gripping portion 28 is a tab-shaped film piece that protrudes from the secondary film portion 25 via the connecting end portion 27 . In the closed state shown in FIG. 1(A), the tab 28 is folded back toward the upper surface of the secondary film portion 25, with the connecting end 27 as a fold. The knob 28 in the illustrated example is formed in a rectangular shape that is long from the connecting end 27 located near the hinge 7 in a direction away from the hinge 7 (in a direction perpendicular to the rotation axis O of the cover member 30). 3(A), the length L of the knob 28 is set to be smaller than the outer diameter D of the inward flange 11, but larger than the radius thereof. This allows the distal connecting portion 38A, which will be described later, to be positioned beyond the knob 28 protruding from the connecting end 27. The width W of the knob 28 is set to be sufficiently shorter than the outer diameter D of the inward flange 11. This allows a pair of proximal connecting portions 38B, which will be described later, to be disposed on both sides of the knob 28 in the width direction. However, the shape and dimensions of the knob 28 can be changed as appropriate.

[0028] The lid member 30 has a lid plate 32 that covers the top surface T of the cap body 2, and a lid peripheral wall 34 that hangs down from the peripheral edge of the lid plate 32. The lid peripheral wall 34 is connected to the mounting tube 4 via the hinge portion 7, and has a finger hook portion k on the opposite side to the hinge portion 7. In this embodiment, a seal tube 36 that fits liquid-tightly inside the pouring tube 12 is provided downward from the rear surface of the cover plate 32 . In this specification, the terms "front" and "back" refer to the front and back sides in the closed state shown in FIG. 1(A) unless otherwise specified.

[0029] A connecting portion 38 for contacting and adhering to the secondary film portion 25 is provided downward from a suitable position on the rear surface of the cover plate 32 (inside the sealing tube 36 in the illustrated example). As a bonding method, ultrasonic welding is preferred, but other methods can also be used. The tip 39 of the connecting portion 38 has a horizontal tip surface (the lower surface when the lid is closed) that is large enough to exert sufficient adhesive force. In this embodiment, as shown in Figure 2(A), multiple midfoot-shaped (midfoot-tube-shaped in the illustrated example) connecting portions 38 protrude from the back surface of the cover plate 32, and the tip ends 39 of these connecting portions 38 are used to bond and connect multiple mutually separated locations of the secondary film portion 25 in a scattered manner. In this configuration, localized portions of the secondary film portion 25 can be bonded by ultrasonic welding, allowing for efficient connection. In the illustrated example, as shown in FIG. 2(A), a single distal connecting portion 38A is provided that is far from the articulating end portion 27 (or far from the hinge portion 7) and a pair of proximal connecting portions 38B are provided that are close to the articulating end portion 27 (or close to the hinge portion 7). The distal connecting portion 38A and the pair of proximal connecting portions 38B are disposed on the upper surface U of the secondary film portion 25 in a region where the tab portion 28 is not folded over. Specifically, as described above, the distal connecting portion 38A is located at the tip of the knob portion 28, which extends in a strip-like shape from the connecting end portion 27 near the hinge portion 7, and a pair of proximal connecting portions 38B are located on both sides of the knob portion 28 in the width direction. With this configuration, when the lid member 30 is opened, a lifting force can be applied evenly to the sub-film portion 25 via the distal connecting portion 38A and the proximal connecting portion 38B. The width a (width in the direction of the rotation axis O) of the distal connecting portion 38A is greater than the width b of each proximal connecting portion 38B.

[0030] In the above-described configuration, when manufacturing a cap with an inner lid, the cap body 2 and the lid member 30 may be molded in a developed state as shown in Fig. 2. In this molding process, the main film portion 22 and the inner lid 24 may be incorporated into the cap body 2 as a single component (film laminate) by insert molding. Next, the lid member 30 is closed, and the connecting portion 38 of the lid member 30 is brought into contact with the secondary film portion 25. Ultrasonic waves are applied to this contact point from above through the secondary film portion 25 to weld it, resulting in the state shown in Figure 1.

[0031] When using the cap with inner lid, the cap is attached to the mouth / neck portion 102 of the container body 100, and from the state shown in Figure 1(A), a finger is hooked on the finger hook portion k, and the lid member 30 is rotated in the opening direction around the hinge portion 7. When this is done, the secondary film portion 25 is usually pulled upward via the connecting portion 38 of the cover member 30, and is easily peeled off from the primary film portion 22 as shown in FIG. 4(A). By doing so, the discharge port 23 of the main film portion 22 is opened as shown in FIG. 3(A), and the container body 100 can be tilted to discharge the contents from the discharge port 23 to the outside. However, due to reasons such as weak adhesion between the connecting portion 38 and the secondary film portion 25, the inner lid 24 may remain on the cap body 2 even after the lid opening operation. In this case, the appearance of the cap is the same as that shown in Figure 2(B). From this state, as shown in FIG. 4(B), when the gripping portion 28 is pinched and pulled upward, the secondary film portion 25 is gradually peeled off from the primary film portion 22 from the breaking initiation point P near the connecting end portion 27 . As a result, as shown by the imaginary lines in the figure, the secondary film portion 25 is pulled up while bending, and is finally detached from the cap body 2. At this time, the primary film portion 22 is left behind on the cap body 2 side, and the discharge port 23 is opened. Therefore, the container body 100 can be tilted and the contents can be taken out from the discharge port 23.

[0032] According to the above-described configuration and operation, the tab 28 is connected to the auxiliary film portion 25 attached to the main film portion 22 with the discharge outlet 23, so that even if the auxiliary film portion 25 cannot be peeled off by opening the lid member 30, the auxiliary film portion 25 can be forcibly removed by pulling the tab 28, thereby opening the discharge outlet 23. The secondary film portion 25 is flexible, which allows the inner cover 24 to be removed more easily. The main film portion 22, the sub-film portion 25, and the tab portion 28 can be easily arranged in a laminated state in the cap body 2 by insert molding. [Explanation of symbols]

[0033] 2...Cap body 4...Mounting tube 6...Deep groove portion 7...Hinge portion 8...Top wall 9...Outer periphery 10... Annular step portion 11... Inward flange 12... Spout tube 14... Fitting tube 16... Opening 20... Film laminate 22... Main film portion (main film portion) 23... Discharge port 24... Inner lid 25... Sub-membrane portion (sub-film portion) 26... Peripheral edge 27... Connecting end (fold) 28... Grip portion 30...Lid member 32...Lid plate 34...Lid peripheral wall 36...Seal tube 38...Connection part 38A... Distal connection part 38B... Proximal connection part 39... Tip part 100...container body 102...mouth and neck portion a...Width of first connecting part b...Width of second connecting part D...Outer diameter f...Circumferential break line g...Vertical breaking line i...Latching rib j...Rib receiving part k...Finger hook L...Length of knob m...Annular locking part n...Locked recess О...Rotary axis P...Peeling start point T...Top surface U: Upper surface W: Width of knob

Claims

1. a cap body (2) having a discharge port (23) on a top wall (8); and a lid member (30) that covers the upper side of the cap body (2), In the cap with inner lid, an inner lid (24) for closing the discharge port attached to the cap body (2) is formed so as to move toward the lid member (30) when the lid member (30) is opened, The discharge port (23) is formed in a main membrane portion (22) that is inseparably attached to the top wall (8) and communicates with an opening (16) provided in the top wall (8), The inner cover (24) includes a sub-membrane portion (25) releasably attached to the upper surface of the main membrane portion (22), A cap with an inner lid, characterized in that the secondary membrane portion (25) is attached to a connecting portion (38) hanging down from the back side of the lid member (30) so as to be peelable from the main membrane portion (22) by the lid opening operation.

2. 2. A cap with an inner lid as described in claim 1, characterized in that the inner lid (24) is a membrane-like lid consisting of the sub-membrane portion (25) and a membrane-like knob portion (28) connected to the sub-membrane portion (25).

3. The cap with inner lid described in claim 2, characterized in that the gripping portion (28) is a tab-shaped membrane piece protruding from the secondary membrane portion (25) via the connecting end portion (27), and the main membrane portion (22), the secondary membrane portion (25) and the gripping portion (28) are incorporated into the cap body (2) in a stacked state.

4. A cap with an inner lid as described in claim 3, characterized in that the gripping portion (28) is folded back toward the upper side of the secondary membrane portion (25) using the connecting end portion (27) formed on a part of the peripheral edge (26) of the secondary membrane portion (25) as a fold.

5. A cap with an inner lid as described in any one of claims 1 to 4, characterized in that a plurality of connecting portions (38) protrude from the back side of the lid member (30), and the inner lid (24) is connected to the lid member (30) in a scattered manner by adhering the sub-membrane portion (25) to the tip portions (39) of these connecting portions (38).

6. The lid member (30) is connected to the cap body (2) via a hinge portion (7), The knob portion (28) protrudes from the connecting end portion (27) located near the hinge portion (7) in a direction away from the hinge portion (7), The cap with inner lid according to claim 5, characterized in that the connecting portion (38) comprises a distal connecting portion (38A) far from the hinge portion (7) and disposed at the tip of the knob portion (28) in the protruding direction, and a pair of proximal connecting portions (38B) close to the hinge portion (7) and disposed on both sides of the knob portion (28) in the width direction.

Images