JP2018188191A - Discharge container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge container of which a discharge member can be easily attached to and detached from a container body, which is easily manufactured at low cost and whose fixing strength to the container body of an aerosol valve is high.SOLUTION: A discharge container 10 includes a container body 11 made of synthetic resin, a fixing cover 13 having a flange part 22 covering a top surface 18 of a mouth part 12 of the container body and an annular wall 23 projecting downward, and made of synthetic resin, an aerosol valve 14 attached to the fixing cover, a discharge member 15 having a coating part 40 communicating a stem 31 of the aerosol valve. Around the mouth part 12 is formed a male screw (engaging part) 20, the discharge member 15 has a mounting part 38 having a female screw (inner engaging part) 44 to be screwed onto the male screw 20, a corner part L formed of the flange part 22 and the annular wall 23, and a corner portion 25 of the top surface 18 of the mouth part 12 corresponding to the corner part L are ultrasonically welded onto each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a discharge container, and more particularly to a discharge container having a fixed lid fixed to a container body by ultrasonic welding.

  Patent Document 1 discloses an aerosol-type discharge container including a shoulder cover (attachment member) formed with a male screw around a periphery fixed to the upper end of an aerosol container, and a discharge member having a female screw screwed with the male screw. It is disclosed. Since the aerosol container and the injection member are detachably connected to each other by a screw mechanism, when the contents are used up, they can be easily replaced with a new aerosol container. A similar aerosol exchange system is also disclosed in FIGS.

  In Patent Document 3, a male screw is formed on the outer periphery of the mouth of a synthetic resin container main body, and a female screw is provided on the inner peripheral surface of a cover cap for attaching the valve to the container main body. The structure which couple | bonds a valve | bulb with a container main body so that attachment or detachment is possible is disclosed. In Patent Document 4, a fixed lid provided with a flange portion that comes into contact with the top surface of the mouth portion and a plug portion that is fitted into the mouth portion is fixed to the mouth portion of the container body made of synthetic resin by ultrasonic welding or the like. An aerosol container is disclosed.

Japanese Patent Laid-Open No. 11-105954 JP 2006-44684 A JP 2016-16896 A JP 2014-231357 A

  The shoulder cover used in the discharge container of Patent Documents 1 and 2 is a part for providing a male screw at the upper end of the container body, which causes high costs and waste of materials. Therefore, it is desirable to form a male screw directly on the upper outer periphery of the container body. However, in the case of the structure in which the aerosol valve is fixed to the container body by crimping as in Patent Documents 1 and 2, the shape becomes complicated if a male screw is provided at the mouth of the container body. Further, if a valve is attached by crimping after forming a male screw, the male screw is likely to be deformed.

  In the case of a discharge container in which a valve is fixed using a male screw formed on the upper outer periphery of the container body as in Patent Document 3, a male screw for mounting the discharge member is further provided on the outer periphery of the mouth of the container. However, it is difficult to form double male threads. Moreover, although it is possible to form a male screw on the outer periphery of the valve, there is a possibility that the valve may be mistakenly removed when the discharge member is removed.

  In the discharge container of Patent Document 4, the mouth portion of the container body and the fixing member (fixed lid) are welded along the boundary line between the two appearing on the outside. For this reason, although the fixing strength is high with respect to the pulling in the vertical direction, the strength is not high with respect to the rotating direction. Therefore, when welding is not sufficient, when a strong external force is applied by mistake, especially when a strong force that twists the fixed lid is applied, the welded portion may come off.

The present invention is easy to attach and detach the discharge member and the container body, can be manufactured at a low cost and with a small amount of material, can be manufactured relatively easily, and has a high fixing strength with respect to the container body of the aerosol valve, particularly with respect to torsion. It is an object to provide a discharge container.

  The discharge container 10 of the present invention protrudes downward from a synthetic resin container body 11 having a cylindrical mouth portion 12, a flange portion 22 covering the top surface 18 of the mouth portion 12, and a lower surface of the flange portion, A synthetic resin fixed lid 13 having an annular wall 23 fitted to at least one of the inner peripheral surface 19 or the outer peripheral surface of the mouth portion 12, attached to the fixed lid, and communication between the inside of the container body 11 and the outside It consists of an aerosol valve 14 for switching off and a discharge member 15 having a discharge portion 40 communicating with the stem 31 of the aerosol valve 14, and an engagement portion (male screw 20) is provided at the mouth of the container body. An inner engagement portion (internal thread 44) that is detachably attached to the mouth portion 12 of the container body 11 to the discharge member 15 and engages and disengages from the engagement portion of the mouth portion 12 by rotation and reverse rotation. And a corner portion L formed by the flange portion 22 of the fixed lid 13 and the annular wall 23, and a corner portion 25 of the top surface 18 of the mouth portion 12 corresponding to the corner portion. Are characterized by being welded together.

  In such a discharge container 10, the welding layer 27 is formed between the annular wall 23 of the fixed lid 13 and the inner peripheral surface 19 of the mouth portion 12 and between the lower surface of the flange portion 23 and the top surface 18 of the mouth portion 12. , 28 are preferable. Further, it is preferable that a flexible internal container 16 for defining a space inside the container main body 11 is accommodated in the container body 11, and the inside of the internal container 16 and the aerosol valve 14 communicate with each other. .

  In any of the discharge containers, it is preferable that the engaging portion of the mouth portion 12 is a male screw and the inner engaging portion is a female screw.

  In the discharge container of the present invention, the engagement portion is provided in the mouth portion of the container body, and the inner engagement portion that engages / disengages from the engagement portion is provided in the mounting portion of the discharge member. Is easy to attach and detach. And since the container main body and the fixing lid are welded, an engaging part can be directly formed in the mouth part outer periphery of a container main body. Therefore, the shoulder cover for providing the engaging portion on the container body is not necessary.

  Furthermore, since the corner formed by the flange portion of the fixed lid and the annular wall and the corner of the top surface of the mouth corresponding to the corner are welded to each other, the top surface of the mouth is fixed. The molten resin flows not only between the lower surface of the lid, but also between the outer peripheral surface or inner peripheral surface of the mouth portion and the annular wall, so that it is integrated with a three-dimensional welding structure. Therefore, the fixing strength is high against twisting.

  In such a discharge container, when a weld layer is formed between the annular wall of the fixed lid and the inner peripheral surface of the container mouth and between the lower surface of the flange and the top surface of the container mouth, The tensile strength and the fixing strength in the twist direction are also high. Further, when the annular wall is inserted on the inner peripheral surface side of the mouth portion, there is no possibility that the female screw of the discharge member interferes with the annular wall, so that the degree of freedom of the position and height of the male screw is high. Moreover, since a thick annular wall can be employed, the strength is further increased. On the other hand, when the annular wall is disposed outside the mouth portion, there is no possibility that the welding waste falls into the container body, and the aerosol valve is not clogged.

  A flexible inner container that divides the interior of the container body is accommodated inside the container body, and when the inner container communicates with the aerosol valve, the stock solution and the pressurizing agent are separated. Can be filled. Therefore, when compressed gas is used as a pressurizing agent, there is little risk of accidentally releasing the compressed gas to the outside air. In particular, even when the annular wall is inserted into the mouth, the welding waste that has fallen into the container body does not come into contact with the stock solution in the inner container. Further, when the ejection member is twisted and attached, the fixing lid is fixed to the container body and the inner container does not rotate, so that the inner container is not damaged or deformed in the twisting direction.

When the engaging portion of the mouth portion is a male screw and the inner engaging portion is a female screw, the discharge member can be securely and securely attached.

FIG. 1a is a cross-sectional view showing an embodiment of the discharge container of the present invention, and FIG. 1b is a partially enlarged cross-sectional view of the discharge container before welding a fixing lid. 2a and 2b are partially enlarged cross-sectional views illustrating the fixing lid welding process and the post-welding of FIG. 1b, respectively. FIG. 3a is a cross-sectional view showing another embodiment of the discharge container of the present invention, FIG. 3b is a partially enlarged cross-sectional view of the discharge container before welding the fixing lid, and FIG. 3c is still another embodiment of the discharge container of the present invention. It is a partially expanded sectional view which shows a form. It is a partial cross section side view which shows other embodiment of the discharge container of this invention.

  Next, an embodiment of the discharge container of the present invention will be described with reference to the drawings. A discharge container 10 shown in FIG. 1a includes a container main body 11, a fixed lid 13 fixed to the upper end of the mouth 12 of the container main body by welding, an aerosol valve 14 attached to the fixed lid, and a mouth of the container main body 11. The discharge member 15 is detachably attached around the portion 12. Inside the container main body 11, a pouch 16 is accommodated as an internal container. The pouch 16 is connected to the aerosol valve 14 by a connecting cylinder 17, and its bottom is supported on the inner bottom surface of the container main body. As the container body 11, one having pressure resistance is used, and a PET bottle for carbonated drinks or the like may be adopted. The pouch 16 is formed by stacking two sheets of a synthetic resin sheet, a synthetic resin sheet and an aluminum foil laminate sheet, or folding one sheet and welding the periphery to form a bag.

  The container body 11 is formed from a thermoplastic resin such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), or polyamide (PA) by biaxial stretch blow molding or the like. 11b, a shoulder portion 11c, and a cylindrical neck portion 11d. The vicinity of the upper end of the neck portion 11d is the mouth portion 12 described above. As shown in FIG. 1b, the top surface 18 of the mouth 12 is flat and the inner peripheral surface 19 is a smooth cylindrical surface. A male screw 20 made of a spiral protrusion is formed on the outer peripheral surface of the mouth portion 12.

  The fixed lid 13 is a molded product made of a thermoplastic resin including an inverted cup-shaped valve holding portion 21, a flange portion 22 extending from the lower end to the outer periphery, and an annular wall 23 protruding downward from the lower surface of the flange portion. . The synthetic resin constituting the fixed lid 13 and the synthetic resin constituting the container body 11 are made of the same material that is easily melted and fixed to each other.

  As shown in FIG. 1b, a fillet 24 having a triangular cross-section is annularly provided as a welding margin at the flange portion 22 of the fixed lid 13 and the corner portion L of the annular wall 23 before welding. When welding, as shown in FIG. 2 a, the fixed lid 13 is placed on the upper end of the mouth portion 12, and the annular wall 23 is fitted into the mouth portion 12. Thereby, the slope portion of the fillet 24 comes into contact with the corner portion 25 on the inner periphery of the top surface of the mouth portion. In such a temporary mounting state, the ultrasonic welding horn 26 is pressed from the upper surface of the flange portion 22, and the horn is vibrated while being pressurized to perform ultrasonic welding. In addition, when the annular wall 23 is fitted in the mouth portion, the fixing lid 13 can be welded to the mouth portion of the container main body without being displaced at the time of welding.

By the ultrasonic welding, the fillet 24 and the corner portion 25 are fused and joined by frictional heat caused by vibration, and are integrated. At this time, the fillet 24 is subjected to ultrasonic vibration while being pressed against the corner portion 25, so that the fillet 24 melts and is formed between the inner surface of the mouth portion and the annular wall, and the top surface of the mouth portion 12 and the flange portion 2.
2 to form weld layers 27 and 28 to be described later. The weld layers 27 and 28 are formed along an annular line in a range where the fillet 24 and the corner portion 25 are integrated. The corner 25 itself is also melted. The cross-sectional shape of the fillet 24 is preferably a triangular shape having a width of 1 to 3 mm and a height of 1 to 5 mm. In FIG. 1B, the cross-sectional shape of the fillet 24 is an isosceles triangle, but it may be an unequal triangle, and may be an outwardly or inwardly arcuate shape instead of an oblique line.

  As the welding progresses, the range in which the fillet 24 and the corner 25 abut increases, and welding is performed in a wide annular range. Finally, as shown in FIG. 2 b, the molten resin enters the gap G <b> 1 between the flange portion 22 and the top surface 18 of the mouth portion 12 to form a horizontal weld layer 27. Further, the molten resin also enters the gap G <b> 2 between the outer peripheral surface of the annular wall 23 and the inner peripheral surface 19 of the mouth portion 12, thereby forming a longitudinal weld layer 28. The vertical gap G2 may have a normal fitting tolerance.

  Thus, the welding layers 27 and 28 formed of the resin that has entered the gaps G1 and G2 in the horizontal and vertical directions have a three-dimensional fixing structure. Therefore, the fixing lid 13 and the mouth portion 12 have high fixing strength not only in the vertical direction but also in the twisting direction. Therefore, even if the discharge member 15 is firmly screwed into the outer periphery of the mouth portion 12 or a strong twisting force is applied to remove the discharge member 15 that is tightly screwed, it can withstand high strength.

  Returning to FIG. 1 a, the aerosol valve 14 includes a cup-shaped valve housing 30, a stem 31 accommodated therein so as to be movable up and down, a spring 32 that urges the stem upward, and a stem 31. It consists of stem rubbers 33a and 33b for opening and closing two stem holes communicating with the internal passages 31a and 31b, respectively, and an annular spacer 34 for maintaining the distance between the two stem rubbers. The spring 32 is composed of a plurality of resin pieces standing integrally on the inner bottom surface of the valve housing 30. The stem 31 communicates the first passage 31a that communicates the pouch 16 that is an internal container with the outside, and the space between the pouch 16 and the container main body (external container) 11 that is provided around the first passage 31a. 2 passages 31b. As a whole, it is a known double stem type aerosol valve (see FIG. 6 of Patent Document 3).

  In this embodiment, the outlet of the second passage 31 b is always closed by the discharge member 15, specifically, by the operation unit 39. Therefore, when the stem 31 is pushed down, both stem holes are opened, but the contents (stock solution) filled in the pouch 16 are discharged to the outside, and the pressure filled in the space between the pouch 16 and the container body 11 is filled. The agent is not discharged. In addition to an aerosol valve that pushes in the stem, a tilting aerosol valve that can be discharged when the stem is tilted can also be used.

  A known flow path member 36 for securing a flow path is accommodated inside the pouch 16 even when the content in the pouch becomes small. The flow path member 36 is a rod-shaped member having an uneven surface, and a connecting cylinder 17 is provided at the upper end to connect to the cylinder portion 37 at the lower end of the valve housing 30.

  The discharge member 15 includes a cap-shaped mounting portion 38 that is mounted on the mouth portion 12 of the container body, an operation portion 39 that is connected to the upper end of the stem 31, and an application portion 40 in which a discharge hole 35 is formed. The mounting portion 38 includes a holding portion 41 that covers the valve holding portion 21 and the flange portion 22 of the fixed lid 13, a lower cylinder portion 42 that is provided on the outer periphery of the lower end of the holding portion, and an upper cylinder that protrudes upward from the upper surface of the holding portion 41. Part 43. A female screw 44 is formed on the inner peripheral surface of the lower cylinder portion 42 to be screwed with the male screw 20 on the outer periphery of the mouth portion 12.

An upper end inner peripheral surface of the upper cylinder portion 43 is provided with a coupling portion 45 that is connected to the base portion 40a of the application portion 40 and supports the application portion. In this embodiment, the application section 40 has a comb shape having a plate-like main body 40 b and a plurality of teeth 46. The comb body 40b is provided with a discharge hole 35 opened between the teeth 46, and the passage 47 and the discharge hole 35 in the main body 40b communicate with each other. Further, the base portion 40a of the application unit 40 is formed with a space 48 that accommodates the operation unit 39 and guides the vertical movement of the operation unit. The operation portion 39 is cylindrical and has a discharge passage 49 through which the content discharged at the center is passed. A fitting hole 50 is formed at the lower end to fit the upper portion of the stem 31. In the fitting hole 50, a step portion 51 that closes the second passage 31b outside the stem 31 is formed. An O-ring 52 is provided on the outer peripheral surface of the operation unit 39 for slidably sealing with the base 40a.

  An operation piece 53 for operating with a finger protrudes from the outer periphery of the operation unit 39. A slit 54 that allows the operation piece 53 to move up and down is formed in the base 40 a of the application unit 40. Therefore, the opening and closing operation of the aerosol valve can be performed by pushing and releasing the operation piece 53. Note that a flexible connecting piece (hinge) may be interposed between the base portion 40a and the mounting portion 38, or one end of the hinge may be rotatably connected.

  The discharge container 10 configured as described above becomes a discharge product by filling a pouch 16 with a stock solution such as a hair care product and filling a space between the container body 11 and the pouch 16 with a pressure agent. The stock solution is not particularly limited as long as it is a fluid. It may be a low-viscosity liquid or a high-viscosity fluid having a viscosity of 1000 to 100,000 (mPa · s) such as cream or gel. Examples of the stock solution include stock solutions for hair care such as a hair dye, a decoloring agent, a hair cream, a hair oil, a styling agent, and a hair treatment agent. The stock solution can be filled via the first passage 31a of the stem 31 of the aerosol valve.

  Examples of the pressurizing agent include compressed gases such as nitrogen, compressed air, carbon dioxide, and nitrous oxide. The pressure after filling is, for example, about 0.3 to 1.0 MPa at 25 ° C. The pressurizing agent can be filled via the second passage 31b of the stem 31 of the aerosol valve.

  In order to use such a discharge product, the operation piece 53 is pushed down with a finger to hold the stock solution between the comb teeth 46 and the teeth 46 of the application unit 40. At this time, the aerosol valve 14 is opened, the stock solution in the pouch 16 is discharged, and passes through the passage 47 and comes out from the discharge holes 35 between the comb teeth 46 in the form of cream or gel, for example. By containing a foaming agent having a boiling point of 20 to 40 ° C. such as isopentane in the stock solution, it can be foamed slowly after discharge. When the finger is released from the operation piece 53, the discharge stops. The stock solution held between the teeth 46 is applied so as to comb the hair. When the entire amount has been discharged, the mounting portion 38 is rotated to release the screw connection. As the mounting portion 38 is raised, the operation portion 39 is removed from the stem 31. Thereby, the discharge member 15 can be removed from the container main body 11.

  The removed discharge member 15 can be used by being mounted on the replacement container body 11. Thus, in this discharge container 10, the discharge member 15 can be reused easily and it can contribute to resource saving. Further, since the fixing lid 13 is fixed to the mouth portion 12 by welding, there is no need for fixing by crimping or screwing, and the periphery of the mouth portion 12 has a small diameter and a simple appearance. Therefore, the operation of covering the mounting portion 38 of the discharge member 15 over the mouth portion 12 and screwing it onto the male screw 20 is easy.

  In the discharge container 60 shown in FIG. 3 a, the annular wall 23 of the fixed lid 13 protrudes downward from the outer peripheral edge of the flange portion 22 and covers the outer periphery of the mouth portion 12 of the container body 11. Therefore, during ultrasonic welding, welding waste does not fall into the container body 11. Therefore, it is not necessary to provide an internal container such as a pouch inside the container body 11. The aerosol valve 61 is not a double stem type, but has a single stem passage 62. However, it is also possible to provide an internal container for other reasons, such as separately filling the stock solution and the pressurizing agent, or adopt a double stem type aerosol valve.

  In the discharge member 63, the application unit 40 and the operation unit 39 are integrated, and they can move up and down with respect to the mounting unit 38. The operation unit 39 includes a disk 39a that can be pushed down with a finger, an upper cylinder 39b protruding from the upper surface, and a lower cylinder portion 39c protruding from the lower surface. The brush 64 is planted in the upper tube portion 39b. A guide cylinder 65 for guiding the vertical movement of the operation unit 39 is provided on the upper surface of the mounting unit 38. A dip tube 66 through which contents are passed is connected to the lower end of the valve housing 30. Since the other structure is substantially the same as the discharge container 10 of FIG. 1a, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted. Since the discharge container 60 shown in FIG. 3a does not include an internal container, the container body 11 is filled with both the stock solution and the pressurizing agent. Examples of the stock solution include stock solutions for skin care such as shaving and face washing. In addition to the above-mentioned compressed gas, a liquefied gas such as liquefied petroleum gas, dimethyl ether, or hydrofluoroolefin may be used as the pressurizing agent. By using the liquefied gas, the stock solution can be foamed and discharged in the form of a foam.

  Since the annular wall 23 of the fixed lid 13 is disposed on the outer periphery of the mouth portion 12 as described above, the fillet 24 is provided inside the annular wall 23 as shown in FIG. The fillet 24 forms weld layers 28 and 27 between the outer surface of the mouth portion and the annular wall 23 and between the top surface of the mouth portion and the flange portion by ultrasonic welding. In order to prevent the female screw 44 from interfering with the annular wall 23 when the discharge member 15 is attached to the mouth portion 12, a step portion 67 that fits the annular wall 23 is formed on the outer periphery of the mouth portion 12. The diameter may be reduced. In that case, as shown in FIG. 3 c, fillets 68 can be provided at the corners of the stepped portion 67 of the mouth portion 12, and ultrasonic welding can be performed between the bottom surface corners of the annular wall 23 of the fixed lid 13.

  In the said embodiment, application parts, such as a comb tooth and a brush, are provided as a discharge part of a discharge member. However, a sponge-like application unit can be employed, and various types of discharge units such as a spray nozzle, a spout for discharging liquid or foam, and the like can be provided. In the embodiment of FIG. 1a, a pouch is employed as the internal container. However, a flexible inner bag made of synthetic resin may be employed instead of the pouch.

  In the discharge container 10 of FIG. 1a, the discharge member 15 is mounted and fixed by screwing the male screw (engagement portion) 20 of the mouth portion 12 and the female screw (inner engagement portion) 44 of the mounting portion 38. It is also possible to employ engagement between an engagement portion other than a screw and an inner engagement portion. In the discharge container 70 shown in FIG. 4, a locking part 71 is projected as an engaging part on the outer peripheral surface of the mouth part 12 of the container body 11, and a locking projection as an inner engaging part is provided on the inner peripheral surface of the mounting part 38. 72 is projected. A plurality (four in the figure) of the locking portions 71 are arranged uniformly at intervals in the circumferential direction.

  In this embodiment, each locking portion 71 extends in the circumferential direction, engages with the locking protrusion 72, and restrains the movement of the mounting portion 38 in the axial direction from one end of the arc portion 73. It consists of a rotation stopper part 74 that descends downward and determines the rotation position of the locking projection 72. A small piece 75 extending from the lower end of the stopper portion 74 in the direction opposite to the arc portion is positioned so that the locking projection 72 of the mounting portion is positioned in the vicinity of the arc portion 73 to restrict the rotation distance and to be easily mounted. It is a restricting means for restricting the amount of rotation and detaching when the part is reversely rotated.

  The locking protrusions 72 are arc-shaped protrusions protruding inwardly arranged at equal intervals in the circumferential direction. The position of the locking projection 72 is a position where the upper surface of the locking projection 72 engages with the lower surface of the arc portion 73 of the locking portion 71 when the pressing portion 41 of the mounting portion 38 is put on the upper surface of the fixed lid 13. . The distance S1 between the lower surface 41a of the pressing portion 41 and the upper surface of the locking projection 72 is the same as or slightly smaller than the distance S2 between the upper surface of the flange portion 22 of the fixed lid 13 and the lower surface of the arc portion 73.

When the discharge member is mounted on the container body 11, the mounting portion 38 is covered with the mouth portion 12 so that the locking projection 72 is passed between the locking portions 71, and the mounting portion 38 is rotated while pressing firmly against the fixed lid 13. Let Thereby, the engagement of the locking projection 72 and the locking portion 71 is made elastically, and the mounting portion 38 can be securely mounted to the container body 11. When removing, the engagement between the locking projection 72 and the locking portion 71 is released by rotating in the reverse direction. The fixed lid 13 is welded to the mouth portion 12 of the container body 11 via the horizontal weld layer 27 and the vertical weld layer 28 even against such rotation with strong contact. 13 does not come off.

  In FIG. 4, the number of the locking protrusions 72 and the locking portions 71 is four, but can be two to three or five or more. In the embodiment of FIG. 4, a tapered portion 76 is formed at the lower corner of the tip of the arc portion 73 (the right end of FIG. 4). This makes it easy to engage the locking projection 72 with the lower surface of the arc portion 73. The part where the locking part 71 and the locking projection 72 abut can be a screw-like inclined surface.

  In addition, it can replace with the latching protrusion 72 and can also employ | adopt the latching groove formed so that it might extend in the circumferential direction on the outer peripheral surface of a mouth part. In that case, a vertical groove through which the locking protrusion 72 of the mounting portion 38 is passed is formed from one end of the locking groove to the upper end of the mouth portion 12 to form an L-shaped guide groove as a whole. Conversely, a locking projection can be formed in the mouth portion 12 and an L-shaped guide groove upside down can be formed in the mounting portion 38.

DESCRIPTION OF SYMBOLS 10 Discharge container 11 Container main body 11a Bottom part, 11b Body part, 11c Shoulder part, 11d Neck part 12 Mouth part 13 Fixing lid 14 Aerosol valve 15 Discharge member 16 Pouch 17 Connecting cylinder 18 Top surface 19 Inner peripheral surface 20 Male thread (engagement part) )
21 Valve holding part 22 Flange part 23 Annular wall L Corner 24 Fillet 25 Corner 26 Horn G1 Gap 27 Horizontal welding layer G2 Gap 28 Vertical welding layer 30 Valve housing 31 Stem 31a First passage, 31b Second passage 32 Spring 33a, 33b Stem rubber 34 Spacer 35 Discharge hole 37 Tube portion 36 Flow path member 38 Mounting portion 39 Operation portion 40 Application portion 40a Base portion 40b Main body portion 41 Presser portion 42 Lower tube portion 43 Upper tube portion 44 Female thread Joint)
45 coupling portion 46 comb tooth 47 passage 48 void 49 discharge passage 50 fitting hole 51 step portion 52 O-ring 53 operation piece 54 slit 60 discharge container 61 aerosol valve 62 stem passage 63 discharge member 39a disc 39b upper cylinder 39c Lower cylinder 64 Brush 65 Guide cylinder 66 Dip tube 67 Step part 23a Lower surface corner part 70 Discharge container 71 Engagement part 72 Engagement protrusion 73 Arc part 74 Rotation stopper part 75 Small piece 76 Taper part 41a Lower surface S1 holding part 41 of holding part A distance S2 between the lower surface 41a and the upper surface of the locking projection 72 The distance between the upper surface of the flange portion 22 of the fixed lid 13 and the lower surface of the arc portion 73

Claims (4)

A synthetic resin container body having a cylindrical mouth portion;
A synthetic resin fixing lid provided with a flange portion that covers the top surface of the mouth portion, and an annular wall that protrudes downward from the lower surface of the flange portion and fits with at least one of an inner peripheral surface or an outer peripheral surface of the mouth portion. When,
An aerosol valve attached to the fixed lid and switching between communication between the inside and outside of the container body, and
It consists of a discharge member having a discharge part communicating with the stem of the aerosol valve, and an engagement part is provided at the mouth of the container body,
The discharge member is provided with a mounting portion that is detachably mounted on the mouth portion of the container body, and has an inner engagement portion that engages and disengages with the engagement portion of the mouth portion by rotation and reverse rotation.
A discharge container in which a corner formed by the flange portion of the fixed lid and the annular wall and a corner of the top surface of the mouth corresponding to the corner are welded to each other.   The discharge container according to claim 1, wherein a welding layer is formed between the annular wall of the fixed lid and the inner peripheral surface of the mouth portion, and between the lower surface of the flange portion and the top surface of the mouth portion.   The discharge according to claim 1 or 2, wherein a flexible inner container that divides a space inside the container body is accommodated in the container body, and the inside of the inner container communicates with the aerosol valve. container. The discharge container according to claim 1, wherein the engagement portion of the mouth portion is a male screw, and the inner engagement portion of the mounting portion is a female screw.

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