Cap and film setting method for cap

Abstract

To provide a cap which can seal a pouring cylinder by bonding a film from the inside of a cap body after a lid is closed, and can unseal the pouring cylinder by transferring the film to an upper lid when the lid is opened for the first time.SOLUTION: The cap comprises a cap body B provided with a spout cylinder 7 mounted on a vessel body A and erected to pour out a content liquid in the vessel body A, and an upper lid D openably and closably attached to the cap body B and vertically provided with an inner ring 22 capable of adhering to the inner periphery of the spout cylinder 7, wherein the cap body B has a flange part 8a at the lower part of the inner periphery of the spout cylinder 7, and a film F adhered to the flange part 8a and the lower end face 2 22c of the inner ring 22 from the inside of the cap body B after closing the cap.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cap that is attached to the mouth of a container body, and more particularly to a cap that seals a pouring tube with a film. [Background technology]

[0002] 2. Description of the Related Art Conventionally, caps have been known in which an upper lid is openably and closably connected to a cap body via a hinge portion, and a closing plate of the cap body is opened by a pull ring. With this type of cap, two actions are required to initially open the cap: first, the top lid is opened relative to the cap body, and then the pull ring is pulled up to open the sealing plate relative to the cap body. This makes initial opening of the cap cumbersome.

[0003] For this reason, a cap has been proposed in which a film is welded under pressure between the pouring tube of the cap body and the inner ring of the top lid to seal the pouring tube (see, for example, Patent Document 1). With this cap, when the top lid is first opened, the film peels off from the pouring tube and moves to the top lid, thereby opening the container. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-134002 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the cap described in Patent Document 1, the top lid is closed onto the cap body, and the film is heated and pressurized, so that the film is welded in a pressurized state. However, when the film is set, it is pushed into the dispensing tube from above with a jig, which can cause damage to the seal between the cap body and the inner ring inside the dispensing tube.

[0006] The present invention aims to solve the above problems and to provide a cap that can seal the dispensing tube by adhering a film to the inside of the cap body after closing, and that allows the film to transfer to the top lid when the cap is first opened, allowing the dispensing tube to be opened. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a cap comprising a cap body that is attached to a container body and has an upright dispensing tube for dispensing the liquid contents from the container body, and an upper lid that is attached to the cap body so as to be able to open and close and has a hanging inner ring that can be fitted tightly to the inner circumference of the dispensing tube, wherein the cap body has a flange portion at the bottom of the inner circumference of the dispensing tube and has a film that is adhered to the flange portion and the lower end surface of the inner ring from the inside of the cap body after the lid is closed.

[0008] In one embodiment of the cap, the cap body has an upper wall that seals the opening of the mouth of the container body, a pouring outlet that penetrates the upper wall, and a pouring tube that stands upright from the upper wall to surround the pouring outlet, the flange portion is recessed from the lower surface of the upper wall to the lower inner circumference of the pouring tube and is formed at the upper end of a stepped opening that is larger in diameter than the inner diameter of the pouring tube, and the inner ring has a configuration in which, when set, the lower end surface is set to the same height as the flange portion of the cap body, and the adhesive area of ​​the lower end surface of the inner ring is larger than the adhesive area of ​​the flange portion.

[0009] Furthermore, the present invention employs a method for setting a film in a cap, which is a method for setting a film in the above-mentioned cap, characterized by comprising the steps of: closing the top lid; abutting the receiving jig on which the film is set against the flange portion and the lower end surface of the inner ring from the inside of the cap body; and adhering the film using ultrasound. [Effects of the Invention]

[0010] By adopting the above-described configuration, the cap of the present invention can receive a film from the inside of the cap body and securely adhere it with a jig to seal the dispensing tube after closing, and when the cap is first opened, the film transfers to the top lid, allowing the dispensing tube to be opened. Furthermore, the method for setting a film on a cap according to the present invention allows the film to be adhered from the inside of the cap body, making it easy to set the film on the receiving jig and enabling stable ultrasonic welding. [Brief explanation of the drawings]

[0011] [Figure 1] 1A and 1B are diagrams showing a container fitted with a cap according to a first embodiment of the present invention, in which (a) is a side cross-sectional view in a closed state, and (b) is an enlarged view of a main part of (a). [Figure 2] 1A and 1B are diagrams showing a cap according to a first embodiment of the present invention, in which (a) is a cross-sectional side view in a closed state, and (b) is a cross-sectional side view in an open state. [Figure 3] 1A and 1B are diagrams showing the film and receiving jig used in the cap of the first embodiment of the present invention, where (a) is a side view showing the film set in the receiving jig, and (b) is a diagram showing the film and receiving jig set in the closed cap. [Figure 4] 1 is a view showing a cap according to a first embodiment of the present invention in an open state. [Figure 5] 10A and 10B are diagrams showing a container fitted with a cap according to a second embodiment of the present invention, in which (a) is a side cross-sectional view in a closed state, and (b) is an enlarged view of a main part of (a). [Figure 6]10A and 10B are diagrams showing a container fitted with a cap according to a third embodiment of the present invention, in which (a) is a side cross-sectional view in a closed state, and (b) is an enlarged view of a main part of (a). [Figure 7] 10A and 10B are diagrams showing a container fitted with a cap that is a modified example of the third embodiment of the present invention, in which (a) is a side cross-sectional view in a closed state, and (b) is an enlarged view of a main part of (a). [Figure 8] FIG. 10 is a diagram showing a modified example of the cap according to the third embodiment of the present invention in an open state. DETAILED DESCRIPTION OF THE INVENTION

[0012] Next, the cap of the present invention will be described with reference to the drawings showing an embodiment as a hinge cap. In the following description, in FIG. 1(a), the left side is the "pouring side", the right side is the "rear side", the upper side is the "upper", and the lower side is the "lower".

[0013] Example 1 In Figure 1, A is the container body, B is the cap body attached to the container body A, D is the top lid attached to the cap body B via the hinge part C so that it can be opened and closed, and F is a film that is inserted from the inside of the cap body B after closing and is adhered to the flange part 8a of the cap body B and the lower end surface of the inner ring 22 of the top lid D. The cap body B, hinge portion C and top cover D constitute a hinge cap, and the hinge cap is attached to the container body A to form a container with the hinge cap attached. The container body A has a mouth portion 1 at the top, and a fitting ridge 2 is provided on the upper outer peripheral surface of the mouth portion 1.

[0014] As shown in Figures 1 and 2, the cap body B comprises an attachment portion 5 that is fitted onto the mouth portion 1 of the container body A, an upper wall 6 that extends inward from the inner edge of the attachment portion 5 and seals the opening of the mouth portion 1, a pouring outlet 6a that penetrates the upper wall 6 near the pouring side, and a pouring tube 7 that stands upright from the upper surface of the upper wall 6 so as to surround the pouring outlet 6a, and a stepped opening 8 that is recessed at the bottom of the pouring outlet 6a and has a diameter that expands from the underside of the upper wall 6 to the lower inner periphery of the pouring tube 7, and a film F is inserted into the stepped opening 8. In order to make it easier to pour the liquid content, in this embodiment, the pouring side of the pouring tube 7 is formed higher than the back side, and the tip is formed in a trumpet shape. The step opening 8 has an inner peripheral portion 8b that is larger in diameter than the inner circumference of the pouring tube 7, and a flange portion 8a that is a ring-shaped flat surface with a width α that connects the upper end of the inner peripheral portion 8b to the lower end of the inner circumference of the pouring tube 7. In this embodiment, the flange portion 8a is formed at the stepped opening 8 having a larger diameter than the inner circumference of the pouring tube 7, but the flange portion 8a may be formed by reducing the diameter of the lower inner circumference of the pouring tube 7.

[0015] The mounting portion 5 is composed of an annular base wall portion 10 that abuts the upper surface of the mouth portion 1 of the container body A, an inner tube 11 that hangs down from the inner side of the base wall portion 10, and an outer wall portion 12 that hangs down from the outer side of the base wall portion 10.The outer wall portion 12 has an engaging protrusion 13 at the lower inner periphery that engages with the mating protrusion 2 of the mouth portion 1 of the container body A, and a lid engaging portion 14 that stands upright on the upper part of the base wall portion 10 and engages with the upper lid D to keep the lid closed.

[0016] The upper part of the outer peripheral wall part 12 has a stepped recess 16 recessed from the outer periphery of a predetermined arc on the pouring side, and the upper surface of the remaining back side is flush with the upper surface of the upper wall 6, and a hinge part C is connected to the upper end of the outer periphery. Furthermore, on the rear side, a slit groove 17 may be recessed from above to form a breakable thin portion 17a so that the outer peripheral wall portion 12 can be broken and disposed of separately.

[0017] The upper lid D is rotatably attached to the upper outer end of the outer wall portion 12 of the cap body B via a hinge portion C, and is provided with a top wall 20, a side wall 21 hanging down from the periphery of the top wall 20, and a cylindrical inner ring 22 hanging down from the back surface of the top wall 20, which is fitted into the inner circumference of the dispensing tube 7 of the cap body B and fits tightly against it. The top wall 20 is provided with a deformable thin-walled portion 23 on the outer periphery of the inner ring 22 .

[0018] The side peripheral wall 21 has an engaging portion 25 around the inner periphery of the lower end that engages with the lid engaging portion 14 to maintain the lid closed, and on the outer periphery, at the bottom of the pouring side, a circumferentially arc-shaped knob portion 26 is formed, and a hinge portion C is connected to the lower end on the back side. An arc-shaped covering wall 27 is provided on the outer peripheral edge of the pouring side of the underside of the side peripheral wall 21, except for the part where the knob portion 26 is formed, which covers the stepped recess 16 of the outer peripheral wall portion 12 of the cap body B when the lid is closed, and is formed so as to be close to or abut against the bottom surface of the stepped recess 16.

[0019] The inner ring 22 has a lower outer periphery 22a that tightly fits into the inner periphery of the pouring tube 7 of the cap body B to form a seal, and a lower end 22b is formed below the lower outer periphery 22a, with the outer periphery reduced in diameter so that it forms a width γ from the pouring outlet 6a, and the lower end surface 22c of the lower end 22b abuts against the upper surface of the film F when set, and is formed into a cylindrical shape of width β with a height that is bonded together with the flange portion 8a of the step opening 8 of the cap body B.

[0020] As shown in Figure 1(b), the film F is deformable, breakable, and heat-resistant, and has an outer edge portion F1 with a width α at the outer edge of the upper surface that is bonded to the flange portion 8a of the step opening 8, an inner portion F2 with a width β on the inner side of the upper surface that is bonded to the lower end surface 22c of the inner ring 22 and is formed on the inside, and an intermediate portion F3 with a width γ that is not bonded between the outer edge portion F1 and the inner portion F2. As shown in FIG. 3, the film F is adhered by a receiving jig T using ultrasonic welding or the like, and seals the dispensing tube 7 of the cap body B.

[0021] As shown in Figure 1(b), the width α of the flange portion 8a of the step opening 8 and the width β of the lower end surface 22c of the inner ring 22 of the upper cover D are set so that β is larger than α so that the adhesive area of ​​the lower end surface 22c of the inner ring 22 is larger than the adhesive area of ​​the flange portion 8a of the step opening 8. In this embodiment, α is set to 0.5 mm and β is set to 1.0 mm, and the width γ between the outer periphery of the lower end 22b of the inner ring 22 and the inner periphery of the pouring tube 7 is set to be larger than α and smaller than β.

[0022] The receiving jig T is provided at its upper part with a mounting member 30 which is fitted into the step opening 8 of the cap body B from below. The mounting member 30 is inserted into the inner peripheral portion 8b of the stepped opening 8 and has an outer peripheral portion 30b that moves up and down, and a mounting surface 30a formed at the upper end of the outer peripheral portion 30b.As shown in Figure 3(a), the lower surface of the film F is set on the mounting surface 30a, and as shown in Figure 3(b), the upper surface of the film F is abutted against the flange portion 8a of the stepped opening 8 of the cap body B and the lower end surface 22c of the inner ring 22 of the top cover D.Then, ultrasonic waves are emitted upward from the mounting surface 30a, melting the flange portion 8a and the lower end surface 22c and adhering the film F. Furthermore, the adhesion of the film F is not limited to ultrasonic welding, but may be achieved by generating high heat only from the mounting surface 30a to melt the flange portion 8a and the lower end surface 22c for thermal adhesion.

[0023] Next, the manner of use and the effects of this embodiment will be described. The hinge cap of this embodiment is integrally molded in the open state shown in FIG. 2(b). The integrally molded hinge cap is formed by rotating the top cover D via the hinge portion C to cover the cap body B and closing it as shown in Figure 2(a). After that, as shown in Figure 3(a), a film F is set on the mounting surface 30a of the mounting member 30 of the receiving jig T, and then the receiving jig T is inserted from below into the stepped opening 8 of the cap body B, and as shown in Figure 3(b), the top surface of the film F is abutted against the flange portion 8a of the stepped opening 8 of the cap body B and the lower end surface 22c of the inner ring 22 of the top cover D, and the film F is bonded by ultrasonic welding or the like. After the film F has been adhered, the receiving jig T is removed, and the film F is adhered to the flange portion 8a, forming a hinged cap that seals the pouring tube 7.

[0024] In the hinge cap of this embodiment, the film F is placed and set on the mounting surface 30a of the mounting member 30 of the receiving jig T, and the receiving jig T with the film F set therein is inserted into the step opening 8 of the cap body B from below, and the film F can be adhered to the flange portion 8a of the cap body B and the lower end surface 22c of the inner ring 22 of the top cover D.Therefore, the film F placed on the receiving jig T before adhesion will not shift sideways or fall down, and the film F can be stably adhered from below.

[0025] Next, the closed hinge cap is attached to the mouth 1 of the container body A filled with the liquid content, to form the container with the hinge cap attached as shown in FIG. In the stoppering process, the mouth 1 of the container body A is placed in the annular groove formed between the inner tube 11 and outer wall 12 of the attachment portion 5, and when a pressing force is applied from above the top lid D, the engaging protrusion 13 of the outer wall 12 overcomes the mating protrusion 2 of the mouth 1 and fits into it, and the mouth 1 of the container body A is clamped between the outer periphery of the inner tube 11, the inner periphery of the outer wall 12, and the base wall 10, thereby attaching the hinge cap.

[0026] When the hinge cap of this embodiment is applied to a container body A filled with hot liquid, the heat-resistant film F adhered to the flange portion 8a of the cap body B at its outer edge portion F1 seals the inside of the dispensing tube 7 from below, thereby preventing liquid from leaking from the seal portion between the dispensing tube 7 and the inner ring 22. Furthermore, even if the internal pressure rises, the film F itself is pushed from below, but the inner part F2 on the inside of the upper surface of the film F is adhered to the lower end surface 22c of the inner ring 22 of the upper lid D, suppressing deformation, thereby preventing the film F from breaking or the adhesive from coming loose.

[0027] Furthermore, even if an impact force is applied to the top wall 20 of the upper lid D when the container is dropped upside down in a closed state, the thin portion 23 of the top wall 20 absorbs the impact received by the upper lid D and the inner ring 22 is not pushed into or pulled away from the dispensing tube 7, so that the adhesion between the inner ring 22 and the dispensing tube 7 of the cap body B is not affected, and it is possible to prevent the inner ring 22 and the dispensing tube 7 from coming out of adhesion, the inner ring 22 and the dispensing tube 7 from damaging each other, and further, the inner ring 22 from pushing against the film F and causing it to break.

[0028] When using the liquid contents in the container body A, the user places his / her fingers on the knob 26 of the top lid D and lifts it, which lifts the side wall 21 on the pouring side using the hinge C as a fulcrum, releasing the seal between the inner ring 22 of the top lid D and the pouring tube 7 of the cap body B, and opening the top lid D. At this time, the inner portion F2 of the film F with width β adhered to the lower end surface 22c of the inner ring 22 rising from the pouring side is lifted up against the outer edge portion F1 of the film F with width α adhered to the flange portion 8a of the step opening 8 of the stationary cap body B, and the film F is pulled and deformed within the unadhered middle portion F3 with width γ, and breaks.

[0029] As the top lid D is opened, as shown in Figure 4, the film F breaks into a ring shape at the middle part F3 of width γ, and the inner part F2 of the film F adhered to the lower end surface 22c of the opened inner ring 22 and the outer edge part F1 of the film F remaining adhered to the flange part 8a are broken, opening the dispensing tube 7 of the cap body B and unsealing it. When the container is tilted with the top lid D open, the liquid contents in the container body A pass through the step opening 8 in the top wall 6 and the spout 6a, and are poured out of the pouring tube 7 and can be used.

[0030] Furthermore, the width β of the adhesive portion of the inner portion F2 of the film F that is adhered to the lower end surface 22c of the inner ring 22 is larger than the width α of the adhesive portion that is adhered to the flange portion 8a of the outer edge portion F1, and the adhesive strength due to the adhesive area is such that the inner portion F2 is greater than the outer edge portion F1. Therefore, when the lid is opened, the inner portion F2 is pulled strongly against the stationary outer edge portion F1, and deformation and breaking of the middle portion F3 are carried out smoothly.

[0031] By closing the top lid D again on the cap body B, the lower outer periphery 22a of the inner ring 22 of the top lid D adheres closely to the inner periphery of the dispensing tube 7 of the cap body B to form a seal, thereby sealing the inside of the container body A, and the hinge cap can be used by repeatedly opening and closing the top lid D. Although the cap of the present invention has been described as a hinge cap in the embodiment, it may also be a screw cap having a cap body that is attached to the container body and an upper lid that is screwed onto the cap body so as to be openable and closable.

[0032] The hinge cap of this embodiment has a stepped recess 16 on the pouring side of the outer wall portion 12 of the cap body B, so that even if the liquid contents drip from the pouring tube 7 into the lower stepped recess 16 when the container body A is tilted during use, the dirt can be easily wiped off with tissue or the like.

[0033] Next, after all the liquid contents in the container body A have been used, when the hinge cap is to be separated and discarded from the container body A, the top lid D is grasped with the fingers and pulled outward, which pulls the area around the slit groove 17, which is the connecting part of the hinge part C of the outer wall part 12 of the cap body B, via the hinge part C, and the thin part 17a of the outer wall part 12 of the slit groove 17 can be torn, allowing the cap body B and the container body A to be easily disengaged and the hinge cap and the container body A to be separated.

[0034] Example 2 Next, Example 2, in which the form of film F in Example 1 is changed, will be described with reference to the drawings. In the following, the same components as those in the first embodiment are given the same reference numerals, and new reference numerals are given to changed components, and differences will be mainly described.

[0035] In FIG. 5, Fa is a film that is inserted from the inside of the cap body B after the lid is closed and adhered to the flange portion 8a of the cap body B and the lower end surface 22c of the inner ring 22 of the top lid D.

[0036] The film Fa comprises an outer edge portion Fa1 having a width α at the outer edge of the upper surface and bonded to the flange portion 8a, an inner portion Fa2 having a width β on the inner side of the upper surface and bonded to the lower end surface 22c of the inner ring 22 and formed on the inside, and an intermediate portion Fa3 having a width γ that is not bonded between the outer edge portion Fa1 and the inner portion Fa2, and a weakened ring portion 35 having a thin wall that is recessed from above in the intermediate portion Fa3 of width γ. Furthermore, as long as the middle portion Fa3 of the film Fa can be thinned, the weakened ring portion 35 may be recessed not only from above but also from below, or from both above and below.

[0037] In this embodiment, the film Fa has the weakened ring portion 35, so that when the top cover D is opened from the cap body B, the middle portion Fa3 of width γ can be easily and reliably broken and opened. Other functions and effects are the same as those of the first embodiment.

[0038] Example 3 Next, Example 3 in which the film F in Example 1 is replaced with a laminated film G will be described with reference to the drawings. In the following, the same components as those in the first embodiment are given the same reference numerals, and new reference numerals are given to changed components, and differences will be mainly described.

[0039] In FIG. 6, G is a two-layer laminated film that is inserted from the inside of the cap body B after the lid is closed and adhered to the flange portion 8a of the cap body B and the lower end surface 22c of the inner ring 22 of the top lid D. The laminated film G is made by adhering an upper film G1 and a lower film G2 with a peelable adhesive layer G3 in the middle.

[0040] The upper film G1 has an outer edge portion G1a of the outer edge of the upper surface bonded to a flange portion 8a of width α of the step opening 8 of the cap body B by ultrasonic welding or the like, and an inner portion G1b of the inner upper surface bonded to the lower end surface 22c of the inner ring 22 of the upper lid D by ultrasonic welding or the like, thereby sealing the dispensing tube 7 of the cap body B. The lower film G2 is composed of an annular wall portion 40 having the same width α as the outer edge flange portion 8a, and an opening 41 that runs vertically through the inside of the annular wall portion 40 with approximately the same diameter as the planar shape of the pouring outlet 6a. The upper film G1 and the lower film G2 are laminated film G by adhering the upper surface of the annular wall portion 40 of the lower film G2 to the lower surface of the outer edge portion G1a of the upper film G1 with an adhesive layer G3, and the lower surface of the inner portion G1b of the upper film G1 is inside the opening 41 of the lower film G2, and is in a film-free state with approximately the same diameter as the planar shape of the pouring outlet 6a.

[0041] In the laminated film G of this embodiment, the annular wall portion 40 of the lower film G2 is adhered to the underside of the outer edge portion G1a of the upper film G1, so that the outer edge portion G1a is thick and maintains its shape well. When the top lid D is opened from the cap body B, the inner portion G1b adhered to the lower end surface 22c of the inner ring 22 is pulled and deformed, but the deformation is different, and force is applied particularly around the boundary between the outer edge portion G1a and the inner portion G1b, so that the upper film G1 can be easily and reliably peeled off and opened. Other functions and effects are the same as those of the first embodiment.

[0042] (Variation) Next, a modified example of the laminated film G in Example 3 will be described with reference to the drawings. In the following, the same components as those in the third embodiment are given the same reference numerals, and new reference numerals are given to changed components, and differences will be mainly described.

[0043] In FIG. 7, Ga is a two-layer laminated film that is inserted from the inside of the cap body B after the lid is closed and adhered to the flange portion 8a of the cap body B and the lower end surface 22c of the inner ring 22 of the top lid D. The laminated film Ga is formed by adhering an upper film Ga1 and a lower film Ga2 with a peelable adhesive layer Ga3 in the middle, and forming half-cut portions 44 in the upper film Ga1 and the adhesive layer Ga3.

[0044] The upper film Ga1 is configured such that the outer edge portion Ga1a of the outer edge of the upper surface is bonded to the flange portion 8a of the step opening 8 of the cap body B with a width α by ultrasonic welding or the like, and the inner portion Ga1b of the inner upper surface is bonded to the lower end surface 22c of the inner ring 22 of the upper lid D by ultrasonic welding or the like, thereby sealing the dispensing tube 7 of the cap body B. The lower film Ga2 is composed of an annular wall portion 45 having a width α+γ, which is the sum of the width α of the outer edge flange portion 8a and the width γ between the outer periphery of the lower end portion 22b of the inner ring 22 and the inner periphery of the pouring tube 7, and an opening 46 that runs vertically through the inside of the annular wall portion 45 and has the same diameter as the outer periphery of the lower end portion 22b of the inner ring 22. The upper film Ga1 and the lower film Ga2 are laminated film Ga by adhering the upper surface of the annular wall portion 45 of the lower film Ga2 to the lower surface of the outer edge portion Ga1a of the upper film Ga1 with an adhesive layer Ga3, and most of the lower surface of the inner portion Ga1b of the upper film Ga1 is within the opening 46 of the lower film Ga2, and is in a state where there is no film and has the same diameter as the outer periphery of the lower end portion 22b of the inner ring 22.

[0045] When the upper lid D is opened from the cap body B, the inner portion Ga1b of the upper film Ga1 adhered to the lower end surface 22c of the inner ring 22 is pulled upward, and since the half-cut portion 44 is formed in the upper film Ga1, the upper film Ga1 breaks at the outer edge portion Ga1a adhered to the flange portion 8a of the immovable cap body B, and the adhesion at the adhesive layer Ga3 is peeled off.

[0046] As the top lid D is opened, the broken and peeled upper film Ga1 passes through the inner circumference of the dispensing tube 7, and as shown in Figure 8, the inner part Ga1b of the upper film Ga1 remains adhered to the lower end surface 22c of the inner ring 22 while the lid is opened, so the upper film Ga1 sealing the dispensing tube 7 is no longer there and the tube is opened, so it can be opened simply by opening the top lid D. Other functions and effects are the same as those of the third embodiment. [Industrial Applicability]

[0047] The hinge cap of the present invention is suitable as a hinge cap to be attached to the mouth of a container body that contains various liquid contents, since after the lid is closed, the film is received from the inside of the cap body and securely adhered using a jig to seal the dispensing tube, and when the lid is first opened, the film transfers to the top lid, allowing the dispensing tube to be unsealed. [Explanation of symbols]

[0048] A Container body B Cap body C Hinge part D Top lid F, Fa film F1, Fa1, G1a, Ga1a outer edge F2, Fa2, G1b, Ga1b inner part F3, Fa3 middle section G, Ga laminated film G1, Ga1 upper film G2, Ga2 lower film G3, Ga3 adhesive layer T-receiving jig α, β, γ width 1 Mouth 2 Mating ridges 5. Mounting part 6 Upper wall 6a spout 7 Pour tube 8-stage opening 8a Flange 8b Inner circumference 10 Base wall part 11 Inner cylinder 12 Outer wall 13 Engagement protrusion 14 Lid engagement part 16 Step recess 17 Slit groove 17a Thin wall part 20 Top Wall 21 Side wall 22 Inner ring 22a Lower outer perimeter 22b Bottom end 22c Lower end surface 23 Thin-walled section 25 Engaged part 26 Knob 27 Covered wall 30 Mounting member 30a Placement surface 30b outer periphery 35 Weakened ring section 40, 45 Annular wall 41, 46 hole 44 Half cut section

Claims

1. A cap comprising: a cap body attached to a container body and having a dispensing tube provided upright for dispensing the liquid content from the container body; and an upper lid attached to the cap body so as to be openable and closable, and having an inner ring provided downright so as to be able to fit tightly to the inner periphery of the dispensing tube, The cap body has a flange portion on the inner periphery lower portion of the pouring cylinder, A cap characterized by having a film that is adhered to the flange portion and the lower end surface of the inner ring from the inside of the cap body after closing.

2. The cap body has an upper wall that closes the opening of the mouth of the container body, a pouring outlet that penetrates the upper wall, and a pouring tube that stands upright from the upper wall so as to surround the pouring outlet, The flange portion is recessed from the lower surface of the upper wall to the lower inner periphery of the pouring tube, and is formed at the upper end of the step opening whose diameter is larger than the inner diameter of the pouring tube, 2. The cap according to claim 1, wherein the inner ring is set so that its lower end surface is flush with the flange portion of the cap body when the inner ring is set.

3. 3. The cap according to claim 1, wherein the bonding area of ​​the lower end surface of the inner ring is larger than the bonding area of ​​the flange portion.

4. A method for setting a film in the cap according to claim 1 or 2, comprising: a step of closing the top lid; a step of bringing the receiving jig on which the film is set into contact with the flange portion and the lower end surface of the inner ring from inside the cap body; and a step of adhering the film by ultrasonic waves.

5. A method for setting a film in the cap according to claim 3, comprising: a step of closing the top lid; a step of bringing the receiving jig on which the film is set into contact with the flange portion and the lower end surface of the inner ring from inside the cap body; and a step of adhering the film by ultrasonic waves.

Images