JP4648501B1 - Double aerosol container manufacturing method, double aerosol container, and double aerosol container manufacturing apparatus - Google Patents

Abstract

[PROBLEMS] To prevent deformation of the inner bag, generation of wrinkles and generation of cracks when the inner bag is inserted, so that the quality of the inner bag does not deteriorate, the productivity is high, and the manufacturing cost is low. A method for manufacturing a simple double aerosol container is provided.

[Solution]
A metal container having a trunk and a mouth or / and a shoulder reduced in diameter from the trunk, and an inner bag inserted in the metal container and having the trunk and the mouth, A method for manufacturing a double aerosol container in which a propellant is present between the inner bag and the upper bag, which is supported by a can holder, is subjected to drawing with a plurality of drawing dies. A method for producing a double aerosol container, wherein after forming a metal container, the inner bag is inserted into the metal container by an inner bag insertion-dedicated machine equipped with an insertion rod that reciprocates at a predetermined speed and a predetermined pressing force.
[Selection] Figure 4

Description

  The present invention relates to a method for producing a double aerosol container, a double aerosol container, and a device for producing a double aerosol container. Specifically, when inserting an inner bag into a metal container, a method for manufacturing a double aerosol container with a small burden on the inner bag, a double aerosol container using the manufacturing method, and a method for manufacturing the double aerosol container The present invention relates to an apparatus for manufacturing a double aerosol container used in the manufacturing process.

  Conventionally, it consists of a metal container and an inner bag inserted into the metal container, filled with the contents in the inner bag, and filled with a pressure agent in the gap between the metal container and the inner bag in the metal container. Double aerosol containers are known. Since this double aerosol container can discharge the contents separately from the pressurizing agent, it is used for various applications using various contents. Moreover, the material which corrodes a metal container by selecting the material of an inner bag can be used as a content.

  As a problem of manufacturing such a double aerosol container, a process of inserting an inner bag into a metal container can be mentioned. In other words, the inner bag is generally inserted from the mouth portion of the metal container, but if the shape of the inner bag is reduced to simplify the insertion of the inner bag from the mouth portion of the metal container, the filling amount of the contents is limited. Will be. On the other hand, when the size of the inner bag is made larger than the opening of the metal container in order to increase the filling amount of the contents, the inner bag 100 is folded as shown in FIG. It must be deformed and inserted into the metal container 102, and a great load is applied to the inner bag 100. As a result, the inner bag is cracked, the inner bag is deformed, or the quality of the inner bag is deteriorated. Conventionally, such a process has been performed manually, and the insertion operation has been inefficient. As shown in FIG. 14, a method is also known in which a person pushes and pulls the insertion rod 101 to insert the inner bag 100 into the metal container 102. At this time, it is also known to insert the inner bag while reducing the outer diameter using a funnel-shaped drawing die 103 (Patent Document 2).

  On the other hand, instead of inserting the inner bag through the opening of the metal container, the inner bag is inserted into the bottomed cylindrical low and cylindrical can body before forming the metal container, and then the opening of the can body is squeezed. A method of forming a double aerosol container by forming a metal container is also known (Patent Document 3).

JP 2003-170977 A JP 2005-289478 A Japanese Patent No. 3879049

  However, in FIGS. 13 and 14, the quality of the inner bag becomes a problem as described above. Furthermore, when the inner bag is inserted into the metal container by manually pushing and pulling the insertion rod as shown in FIG. 14, the insertion speed, the insertion force, and the insertion method vary depending on the operator. There were various problems such as breaking through the bottom, inserting the inner bag into the metal container with the inner bag crushed, and inserting the inner bag into the metal container with the inner bag displaced. In addition, the type in which the inner bag is suspended from a metal container as shown in FIGS. 13 and 14 has a relatively small insertion distance of the inner bag and a small load on the inner bag. The thing of the type mounted in the bottom part of a container has a problem that the insertion distance of an inner bag becomes large and the burden to an inner bag becomes large.

  The present invention is a double aerosol that prevents damage to the inner bag such as deformation of the inner bag, generation of wrinkles and generation of cracks when the inner bag is inserted, has excellent productivity, and is inexpensive to manufacture. It aims at providing the manufacturing method of a container, the manufacturing apparatus of the double aerosol container manufactured by the manufacturing method, and a double aerosol container.

Producing how dual aerosol container of the present invention, the body portion and a reduced diameter mouth portion and / or a metal container with a shoulder than its body portion, is inserted into the metal container, the body portion and the mouth portion A double aerosol container manufacturing method in which a propellant is present between the metal container and the inner bag, and a plurality of can holders for holding a low and low can body, After forming a metal container by performing a plurality of drawing processes on the upper portion of the bottomed cylindrical can supported by the can holder by a necking machine having a drawing die , an insertion rod and its insertion rod The inner bag is inserted into the metal container by a dedicated inner bag insertion machine equipped with a cam mechanism that reciprocates at a predetermined speed and a predetermined pressing force .

A method for producing a double aerosol container according to the present invention , wherein the method is provided coaxially with the metal container , wherein a taper portion in which the diameter of the inner surface decreases toward the metal container side is formed, and the metal container A method of inserting the inner bag into the metal container by pressing the inner bag in the direction of the metal container via a cylindrical inner bag guiding device whose inner diameter is substantially the same as the inner diameter of the mouth of the metal container Is preferred.
In particular, when the inner bag is placed in a metal container, a method for manufacturing a double aerosol container configured such that the front end of the mouth of the inner bag protrudes from the end surface opening of the mouth of the metal container. In the initial stage of insertion of the inner bag, the end surface opening of the metal container mouth is made to be substantially the same as the end surface opening of the mouth of the metal container and the central axis of the inner bag guiding device. It is preferable that the end face opening of the mouth portion of the metal container is separated from the side face of the inner bag guiding device at the end of insertion of the inner bag.

  In such a method for producing a double aerosol container, the outer diameter D1 of the metal container of the double aerosol container is 25 mm ≦ D1 ≦ 30 mm, and the outer diameter S of the mouth of the metal container is 18 mm ≦ S ≦ 22 mm. The inner bag body outer diameter d1 of the inner bag is preferably 20 mm ≦ d1 ≦ 23 mm, and the angle γ with respect to the central axis of the inner surface of the inner bag guiding device is preferably 20 degrees ≦ γ ≦ 30 degrees. At this time, the relationship between the body outer diameter d1 of the inner bag and the mouth outer diameter S of the metal container is d1 ≧ S.

  A method for manufacturing a double aerosol container using such an inner bag guiding device, wherein the inner surface of the inner bag guiding device is composed of a cylindrical portion and a tapered portion in order from upstream, and the body portion of the metal container. The outer diameter D1 is 50 mm ≦ D1, the outer diameter S of the mouth of the metal container is 25 mm ≧ S, the body outer shape d1 of the inner bag is 35 mm ≦ d1, and the tapered portion of the inner bag guiding device The angle σ is preferably 20 degrees ≦ σ ≦ 30 degrees. At this time, the relationship between the body outer diameter d1 of the inner bag and the mouth outer diameter S of the metal container is d1 ≧ S.

Furthermore, it is preferable that the tapered portion of the inner bag guiding device is composed of a first tapered portion having a larger taper angle and a second tapered portion whose taper angle is smaller than the first tapered portion. In particular, the outer diameter D1 of the body portion of the metal container is 35 mm ≦ D1 ≦ 53 mm, the outer diameter S of the mouth portion of the metal container is 24 mm ≦ S ≦ 28 mm, and the outer diameter d1 of the body portion of the inner bag is 32. 5
mm ≦ d1 ≦ 41 mm, the angle α with respect to the central axis of the first tapered portion is 45 degrees ≦ α ≦ 55 degrees, and the angle β with respect to the central axis of the second tapered portion is 20 degrees ≦ β ≦ 30 degrees. Some are preferred. At this time, the relationship between the body outer diameter d1 of the inner bag and the mouth outer diameter S of the metal container is d1 ≧ S.

The method for manufacturing a double aerosol container according to the present invention, wherein the inner bag is deformed by vacuuming the air in the inner bag until the inner bag is pressed in the direction of the metal container and inserted. The method of inserting in is preferable.

In the method for producing a double aerosol container of the present invention, before inserting the inner bag into the metal container, the roll may be brought into contact with the outer periphery of the mouth part, and a part of the mouth part may be squeezed further deeply. After insertion into the metal container, a roll may be brought into contact with the outer periphery of the mouth portion to further squeeze a part of the mouth portion.
As a method for fixing the valve of the double aerosol container according to the present invention, after inserting the inner bag into the metal container, the valve is inserted into the metal container, and the valve is fixed by caulking the valve against the metal container side. Alternatively, after the inner bag is inserted into the metal container, a valve is inserted into the metal container, and the top cover is put on the valve and the mouth of the metal container, and the tip of the top cover is placed on a part of the metal container. A method of fixing by tightening is mentioned. The double aerosol container of the present invention is characterized in that a valve is fixed to one manufactured by the method for manufacturing a double aerosol container of the present invention. Two double aerosol containers may be combined to form a double double aerosol container.

An apparatus for producing a double aerosol according to the present invention includes a can holder for holding a bottomed cylindrical container, and a rotating disk that rotates intermittently, and approaches and separates from the rotating disk. A necking machine comprising a reciprocating machine having at least a necking processing station having a plurality of molds for necking, an insertion rod, and a cam mechanism for reciprocating the insertion rod at a predetermined speed and a predetermined pressing force. The inner bag insertion dedicated machine for inserting the inner bag into the necked metal container and the metal container necked by the necking machine are sequentially transferred to the inner bag insertion dedicated machine via at least the washing machine. It is characterized by having a conveyor.

  The first aspect of the method for producing a double aerosol container according to the present invention is an inner bag insertion machine equipped with an insertion rod that reciprocates at a constant speed and presses with a constant pressing force in a molded metal container. Since the inner bag is inserted, the quality of the inner bag inserted into the produced double aerosol container is high and stable. When the insertion rod of the inner bag insertion dedicated machine is reciprocated by a drive device equipped with a cam mechanism, the structure is simple, so stable inner bag insertion can be performed for a long time and is efficient. .

  The second aspect of the method for producing a double aerosol container of the present invention is provided coaxially with the molded metal container, and has a tapered portion whose inner diameter is reduced toward the metal container side, In addition, the inner bag is pressed toward the metal container through a cylindrical inner bag guiding device having an opening end on the metal container side whose inner diameter is substantially the same as the inner diameter of the mouth of the metal container. Therefore, the inner bag can be reliably and smoothly inserted into the metal container.

  A double aerosol configured such that when the inner bag is placed in a metal container using such an inner bag guiding device, the mouth end of the inner bag protrudes from the end surface opening of the mouth of the metal container. In the container manufacturing method, at the initial insertion of the inner bag, the end of the opening of the metal container is substantially the same as the opening of the end surface of the opening of the metal container and the central axis of the inner bag guiding device. When the end face opening is substantially brought into contact with the side surface of the inner bag guiding device, the inner bag can be smoothly inserted into the metal container. In addition, at the end of the insertion of the inner bag, when the end opening of the mouth of the metal container is separated from the side surface of the inner bag guiding device, the inner bag guiding device projects from the end opening of the metal container at the tip of the inner bag mouth. Not disturb.

  A method of manufacturing an aerosol container using such an inner bag guiding device, wherein a body outer diameter D1 of the metal container is 25 mm ≦ D1 ≦ 30 mm, and a mouth outer diameter S of the metal container is 18 mm ≦ S. If the inner bag outer diameter d1 of the inner bag is 20 mm ≦ d1 ≦ 23 mm and the angle γ with respect to the central axis of the inner surface of the inner bag guiding device is 20 degrees ≦ γ ≦ 30 degrees, the inner bag Can be inserted without crushing, creases in the inner bag, or plastic deformation of the inner bag.

  Furthermore, the inner surface of the inner bag guiding device is composed of a cylindrical portion and a tapered portion in order from the upstream, the outer diameter D1 of the body portion of the metal container is 50 mm ≦ D1, and the outer shape S of the mouth portion of the metal container is When 25 mm ≧ S, the barrel outer shape d1 of the inner bag is 35 mm ≦ d1, and the angle σ of the tapered portion of the inner bag guiding device is 20 degrees ≦ σ ≦ 30 degrees, a relatively large metal container and Even if it is an inner bag, it can be inserted without crushing the inner bag or without making a crease in the inner bag.

  When the taper portion of the inner bag guiding device is composed of a first taper portion having a taper angle that is larger in order from the top and a second taper portion having a taper angle that is smaller than the first taper portion, the inner bag is formed by the first taper portion. After shrinking to some extent, the degree of deformation is loosened by the second taper part, so even when the inner bag is greatly deformed and inserted into the metal container, the inner bag is crushed, the inner bag is creased, The inner bag can be smoothly inserted without plastic deformation. In particular, the outer diameter D1 of the body portion of the metal container is 35 mm ≦ D1 ≦ 53 mm, the outer diameter S of the mouth portion of the metal container is 24 mm ≦ S ≦ 28 mm, and the outer diameter d1 of the body portion of the inner bag is 32. 5 mm ≦ d1 ≦ 41 mm, the angle α with respect to the central axis of the first tapered portion is 45 degrees ≦ α ≦ 55 degrees, and the angle β with respect to the central axis of the second tapered portion is 20 degrees ≦ β ≦ 30 degrees. In some cases, good double aerosol containers can be produced.

  The third aspect of the method for producing a double aerosol container according to the present invention is that the inner bag is deformed by vacuuming the air in the inner bag until the inner bag is pressed and inserted in the direction of the molded metal container. Therefore, the force from the outside of the inner bag can be reduced and the load on the inner bag can be reduced. Here, “the inner bag is deformed by vacuuming the air in the inner bag” does not mean that the inner bag is deformed only by the vacuum of the air in the inner bag, but only the physical deformation to the inner bag. As an auxiliary role of external force to give. This is particularly preferable for a double aerosol container, which is a double aerosol container in which the inner bag is inserted deeply into the bottom of the can.

  Since the double aerosol container of this invention is manufactured with the manufacturing method of the double aerosol container of this invention, the quality of an inner bag is high.

  The double aerosol device of the present invention includes a necking machine for forming a metal container, an inner bag insertion dedicated machine for inserting an inner bag with an insertion rod that reciprocates at a fixed speed into the necked metal container, It is equipped with a conveyor that sequentially transfers the metal containers necked by the necking machine to the inner bag insertion machine via at least the washing machine, so that the inner bag can be inserted stably and efficiently. is there. The inner bag insertion dedicated machine is provided coaxially with the metal container, has a tapered portion whose inner diameter is reduced toward the metal container side, and the inner diameter is the inner diameter of the mouth of the metal container When the cylindrical inner bag guiding device having an opening end on the metal container side that is substantially the same as the above is provided, the inner bag can be reliably and smoothly inserted into the metal container.

It is a side view which shows one Embodiment of the manufacturing apparatus of the double aerosol container of this invention. It is a top view which shows the necking machine of FIG. FIG. 3 is a sectional view taken along line XX in FIG. 2. It is a perspective view which shows the inner bag insertion dedicated machine of FIG. It is side surface sectional drawing which shows the inner bag guidance apparatus of the inner bag insertion dedicated machine of FIG. It is side surface sectional drawing which shows the outline of the method of inserting an inner bag in a metal container. It is side surface sectional drawing which shows the outline just before inserting an inner bag in a metal container. It is side surface sectional drawing which shows the outline immediately after inserting an inner bag in a metal container. 9a and 9b are side cross-sectional views showing other forms of the inner bag guiding device of the inner bag insertion dedicated machine in FIG. 4, respectively. 10a and 10b are side cross-sectional views showing the front and back of the double aerosol container according to an embodiment of the present invention, and FIG. 10c is a side cross-sectional view showing the inner bag. 11a and 11b are side sectional views showing another embodiment of the double aerosol container according to the present invention before and after fixing the valve. It is a partial cross section side view which shows other embodiment of the double aerosol container of this invention. It is the schematic which shows the manufacturing method of the conventional double aerosol container. It is the schematic which shows the manufacturing method of the conventional double aerosol container.

  A double aerosol container manufacturing apparatus 10 of FIG. 1 includes a necking machine 11 for forming a bottomed cylindrical container into a metal container, an inner bag insertion dedicated machine 12 for inserting an inner bag into the formed metal container, and necking. And a conveyor 13 for sequentially transferring the metal containers formed by the machine to the inner bag insertion dedicated machine. Reference numeral 14 denotes a washing machine for washing the metal container, which is conventionally known. Further, the molded inner bag 30 is sequentially transferred to a dedicated inner bag insertion machine (not shown).

  As shown in FIG. 2, the necking machine 11 holds a metal container, intermittently rotationally moves a rotating plate 21, and moves toward and away from the rotating plate in the horizontal direction to process the metal container. It consists of a reciprocating board 22 to which a tool is attached. Here, the reciprocating disk 22 may approach or be separated in a direction perpendicular to the floor. As shown in FIG. 3, the turntable 21 is provided with a plurality of container holders 23 that hold the metal container vertically and are annularly arranged at equal intervals. The reciprocating disk 22 includes a necking processing station 24 having a plurality of drawing dies 24a to 24e that squeeze the opening of the metal container. Further, the reciprocating plate 22 may be provided with other processing stations. For example, a roll processing station provided with a roll for further deepening a part of the mouth outer periphery. The reciprocating disk 22 is supported by the crankshaft 25 and approaches and separates in the horizontal direction.

  The necking machine 11 operates as follows. That is, the bottomed cylindrical container A1 is sent from the supply line 26a to the container holder 23a of the turntable 21. Next, the turntable 21 rotates and the bottomed cylindrical container A2 is sent to the next container holder 23b. On the other hand, the container A1 held by the container holder 23a rotates and is sent to the position of the necking processing station 24. In synchronization with this, the reciprocating plate 22 moves toward and away from the container, and the mouth of the container A1 is necked by the mold 24a. Further, when the turntable 21 is rotated, the bottomed cylindrical container A3 is sent to the container holder 23c, and the reciprocating board 22 moves in synchronization with and away from the container holder 23c, and the container A2 is necked by the mold 24a. The container A1 is necked by the mold 24b. By repeating this movement, the container A1 is subjected to necking a plurality of times, and a metal container 20 having a predetermined shape having a trunk portion, a shoulder portion, and a mouth portion is obtained. The molded metal container 20 is carried out from a carry-out line 26 b provided so as to be in contact with the turntable 21.

  As shown in FIG. 4, the inner bag insertion device 27 includes a container holding portion 31 that holds the metal container 20, an inner bag support portion 32 that supports the supplied inner bag 30, and the inner bag 30 in the metal container 20. And an inner bag guiding device 34 disposed between the container holding portion 31 and the inner bag support portion 32.

The container holding part 31 includes a star wheel 36 having a plurality of recesses 36 a formed on the outer periphery rotating intermittently, and a stopper 37 provided at an end of the star wheel 36. The metal containers 20 transferred by the conveyor 13 into the recesses 36 a of the star wheel 36 are sequentially supplied in synchronization with the rotation of the star wheel 36.
The inner bag support portion 32 is provided with a concave portion 32 a to which the inner bag 30 is supplied on the upper surface, and is configured to be sequentially supplied in synchronization with the rotation of the star wheel 36. The recess 32a is set so that the metal container 20 and the inner bag 30 are coaxial with one of the positions where the recess 36a of the rotating star wheel 36 stops (reference numeral 36b) (the left end in this embodiment). Has been.

  The inner bag insertion portion 33 includes an insertion rod 41 that moves horizontally, and a cam mechanism 42 that holds the base and drives the insertion rod 41. The cam mechanism 42 includes a columnar rotating shaft (drum cam) 44 and an operating shaft 45 that reciprocates in the axial direction when the rotating shaft rotates, and the operating shaft 45 and the insertion rod 41 are connected to each other. A groove portion 46 is formed on the surface of the rotating shaft 44 so as to reciprocate around both ends by one rotation. The operating shaft 45 is provided with a moving element 47 that moves along the rotation of the rotating shaft 44 along the groove 46 of the rotating shaft 44. Thereby, when the rotating shaft 44 makes one rotation, the moving element 47 moves horizontally on the rotating shaft 44, and the operating shaft 45 also moves horizontally along with this. Therefore, by rotating the rotating shaft 44 at a constant speed, the operating shaft 45 reciprocates at a constant speed with a predetermined speed and a predetermined maximum pressing force. As a drive device for reciprocating the insertion rod 41, an actuator that converts the rotation of a motor or the like in the front-rear direction may be used in addition to the cam mechanism. Also in this case, the insertion rod 41 can be pushed at a predetermined speed and a predetermined maximum pressing force. Furthermore, you may push the inner bag 30 with the air sprayed with a predetermined pressure.

  As shown in FIG. 5, the inner bag guiding device 34 has a cylindrical shape, and is formed with a tapered portion 51 whose inner diameter is reduced toward the metal container 20 side (container holding portion 31 side). Moreover, the inner diameter S1 of the opening end on the metal container 20 side is substantially the same as the inner diameter of the mouth portion S of the metal container. The inner bag guiding device 34 is fixed by a holding tool 34a. Further, the tapered portion 51 is configured by a first tapered portion 52 having a larger taper angle α with respect to the shaft in order from the inner bag support portion 32 and a second tapered portion 53 having a smaller taper angle β than the first tapered portion. The inner bag guiding device 34 is arranged coaxially with the axis of the metal container 20. That is, the metal container 20 (the axis of the concave portion 36a of the star wheel 36), the inner bag guiding device 34, and the inner bag 30 (the axis of the concave portion 32a of the inner bag supporting portion 32) are arranged substantially coaxially. In particular, as shown in FIG. 7, the inner bag guiding device 34 is made of metal so that the center hole of the metal container and the central hole of the inner bag guiding device 34 are more accurately coaxial with each other at the initial insertion of the inner bag 30. The upper end of the container mouth and the side end of the inner bag guiding device 34 are brought into contact (or substantially in contact). On the other hand, as shown in FIG. 8, at the end of insertion of the inner bag 30, between the upper end of the mouth of the metal container and the inner bag guiding device 34 so that the front end of the mouth of the inner bag 30 can slightly protrude from the metal container 20. Are arranged such that a gap Z of 5 to 15 mm is formed. Here, the initial insertion of the inner bag 30 refers to the time until a part of the inner bag 30 enters the metal container 20, and the final insertion of the inner bag 30 refers to the body portion of the inner bag 30 entering the metal container 20. Until the bottom of the inner bag 30 contacts the bottom of the metal container.

45 degrees ≦ α as the first taper portion which is made of synthetic resin and has a thickness of 0.2 to 0.8 mm, particularly 0.4 to 0.6 mm, which reduces the diameter d1 (32.5 to 41 mm) of the inner bag ≦ 55 degrees, particularly 48 degrees ≦ α ≦ 52 degrees is preferable. Further, the second tapered portion for reducing the diameter of the inner bag to the mouth portion S (24 to 28 mm) is preferably 20 degrees ≦ β ≦ 30 degrees, particularly 22 degrees ≦ β ≦ 28 degrees. By designing in this manner, the synthetic resin inner bag 30 can be inserted into the metal container 20 without causing plastic deformation.

  According to the inner bag insertion device 27 configured in this way, as shown in FIG. 6, the metal container 20, the inner bag guiding device 34, and the inner bag 30 are arranged on a shaft in a state of being arranged in a straight line. The inner bag 30 is inserted into the metal container 20 by moving the insertion rod 41 in the front-rear direction. As shown in FIG. 7, the inner bag 30 is largely deformed by the first taper portion 52, and thereafter, the inner bag 30 is deformed small by the second taper portion 53, so that the inside of the metal container 20 is not lost without losing the elastic force of the inner bag 30. (See FIG. 8). At this time, at the initial insertion of the inner bag 30, the metal container 20 is moved toward the inner bag guiding device 34 so that the upper end of the mouth of the metal container 20 and the downstream end of the inner bag guiding device 34 come into contact with each other. For example, the metal container 20 is moved by pushing the metal container 20 with the stopper 37 or moving the star wheel 36 itself in the axial direction. However, the inner bag guiding device 34 may be moved. Then, at the end of insertion of the inner bag (or immediately before or after the inner bag 30 is inserted), the metal container 20 is moved from the inner bag guiding device 34 to the bottom side of the metal container so that a gap Z is formed. In synchronism with the state in which the inner bag 30 is inserted and the insertion rod 41 is pulled, a new inner bag 30 is configured to be supplied to the recess 32 a of the inner bag support portion 32. For example, it may be supplied from a line extending in a direction perpendicular to the insertion rod 41 (not shown). Since the inner bag 30 is inserted into the metal container 20 in this manner, the inner bag 30 is not cracked or the inner bag 30 is not crushed in the metal container 20.

  Further, at the final stage when the inner bag 30 is inserted into the metal container 20, the air in the inner bag 30 may be vacuumed. Thereby, the inner bag 30 can be reduced in diameter not only by the external force by the inner bag guiding device 34 but also by the suction force from the inside to the entire inner bag, so that the body portion of the inner bag 30 and the mouth portion of the metal container 20 It is possible to reduce the load on the inner bag 30 due to the contact. Here, the final stage refers to a stage where a part of the body portion of the inner bag 30 and the mouth portion of the metal container 20 are in contact. Therefore, even if the inner bag 30 is of a type that is inserted up to the bottom of the metal container 20, the inner bag 30 can be easily inserted.

9a and 9b show another embodiment of the inner bag guiding device that can be used in the double aerosol container manufacturing apparatus 10 of the present invention.
In the inner bag guiding device 55 of FIG. 9a, the tapered portion 55a on the inner surface has a constant angle γ. Other configurations are substantially the same as the inner bag guiding device 34. This is not suitable when the inner bag 30 is largely deformed because the tapered portion 55a has a constant angle γ. For example, the diameter d1 (20 to 23 mm) of the inner bag made of synthetic resin and having a thickness of 0.2 to 0.8 mm, particularly 0.4 to 0.6 mm, is applied to the mouth portion S (18 to 22 mm) of the metal container. When the diameter is reduced, the taper portion is set to 20 ° ≦ γ ≦ 30 °, particularly 22 ° ≦ γ ≦ 28 °, so that the inner bag 30 made of synthetic resin does not cause plastic deformation in the metal container 20. Can be inserted.

The inner bag guiding device 57 of FIG. 9b includes an inner surface including a cylindrical portion 57a and a tapered portion 57b, and a stepped portion 57c formed between the cylindrical portion 57a and the tapered portion 57b. However, the stepped portion 57c may not be provided. By providing the cylindrical portion 57a, the inner bag that has reached the inner bag guiding device 57 can be supported. Such an inner bag guiding device 57 is particularly preferable for a metal container and a large inner bag. Specifically, the outer diameter D1 of the body of the metal container is 50 mm ≦ D1, the outer diameter S of the mouth of the metal container is 25 mm ≧ S, and the outer diameter d1 of the inner bag is 35 mm ≦ What is d1 is preferable. In this case, the angle σ of the tapered portion is preferably 20 degrees ≦ σ ≦ 30 degrees, and particularly preferably 22 degrees ≦ σ ≦ 28 degrees.
Such a cylindrical portion 57a may be provided in the opening on the insertion rod side of the inner bag guiding device 34 of FIG.

  FIGS. 10a and 10b are views showing an embodiment of an inner swallow type double aerosol container manufactured by the method for manufacturing a double aerosol container according to the present invention.

10A and 10B, the inner double-type aerosol container 1A includes a metal container 20 and an inner bag 30 inserted into the metal container.
The metal container 20 is provided with a constricted portion 20c formed by bringing a roll into contact with the outer periphery of the lower end of the shoulder portion 20a, the mouth portion 20b, and the mouth portion 20b formed by necking, and further narrowing a part of the mouth portion. ing. As shown in FIG. 10c, the inner bag 30 includes a body portion 30a and a mouth portion 30b having substantially the same diameter, and is made of a synthetic resin having a bellows 30c formed at the upper end of the body portion 30a. However, the bellows 30c may not be formed. The thickness is 0.2 to 0.8 mm, especially 0.4 to 0.6 mm. Synthetic resins are manufactured using materials such as polyethylene, low-density polyethylene, high-density polyethylene or polyolefin resins such as polypropylene, nylon and other polyamide resins, or polyvinyl chloride resins, and are composed of a single layer or multiple layers. . In the case of a multilayer, it is preferable to use a vinyl acetate alcohol copolymer in the intermediate layer or any one of the layers.
Further, when the inner bag body and the mouth portion are substantially the same as described above, the outer diameter of the mouth portion of the metal container and the inner diameter of the inner bag body and the mouth portion are substantially the same. It is comprised so that it may become.

  The inner bag 30 is inserted into the metal container 20 by the method described above. At this time, the front end 30d of the inner bag 30 protrudes from the metal container 20 by 3 to 8 mm, particularly 5 to 6 mm. Before inserting the inner bag, the roll may be brought into contact with the outer periphery of the mouth portion, and a portion of the mouth portion may be further squeezed to form the constricted portion 20c. Thereafter, after the inner bag 30 is filled with the contents, the valve 61 is inserted from the mouth portion 20b of the metal container. Thereby, the inner bag 30 is pressed and the bellows 30c shrinks. The top surface of the valve 61 is covered with a plate-like packing 62 and a top plate 63. The valve 61 is placed on the constricted portion 20c of the metal container 20, and the tip 20d of the mouth of the metal container is connected to the valve. It is crimped by being bent inward on the top plate 63 of 61. Simultaneously with the fixing of the valve 61, the propellant is filled, and the double aerosol container 1A is manufactured.

11a and 11b are views showing an example of an outer swallow type double aerosol container manufactured by the method for manufacturing a double aerosol container according to the present invention. 11a and 11b includes an outer bag type double aerosol container 1B including a metal container 20 and an inner bag 30. Similarly to the inner bag type double aerosol container of FIGS. 10a and 10b, the shoulder 20a, The mouth portion 20b is formed, a roll is brought into contact with the outer periphery of the middle portion of the mouth portion 20b, a part of the mouth portion is squeezed further deeply to form the constricted portion 20c, and then the body portion 30a and the mouth portion 30b are provided The bag 30 is inserted. The inner bag 30 has a body portion 30a and a mouth portion 30b having substantially the same diameter. In this embodiment, the inner bag 30 is not provided with a bellows in the drawing, but may be an embodiment provided with a bellows. Also in this case, the mouth end 30 d of the inner bag 30 protrudes from the metal container 20 by 3 to 8 mm, particularly 5 to 6 mm. The inner bag 30 has a thickness of 0.2 to 0.8 mm, particularly 0.4 to 0.6 mm. Synthetic resin is manufactured using materials such as polyethylene, low density polyethylene, polyolefin resin such as high density polyethylene or polypropylene, polyamide resin such as nylon, or polyvinyl chloride resin, and is composed of a single layer or multiple layers. . In the case of a multilayer, it is preferable to use a vinyl acetate alcohol copolymer in the intermediate layer or any one of the layers. After the inner bag 30 is filled with the contents, the valve 71 is inserted from the mouth portion 20c of the metal container and placed on the binding portion 20c. A packing 72 is placed on the top surface of the valve 71, and an upper lid 73 is placed on the packing 72, and a distal end portion 73a of the upper lid 73 is crimped from the outside to the tie portion 20c of the metal container to fix the valve 71. The double aerosol container 1B filled with the propellant simultaneously with the fixing of the valve 71 is manufactured.
The inner bag shown in FIGS. 10 and 11 has a body portion and a mouth portion having substantially the same diameter. For example, as shown in the inner bag 30 of FIG. 6, the mouth portion is smaller in diameter than the body portion. There may be.

  FIG. 12 shows a double-type double aerosol container 75 in which the double aerosol container 1A of FIG. 10 is connected. The double aerosol container 1 </ b> A is connected by a cover member 76. The stems 61 a of the valves 61 of the two double aerosol containers are respectively fitted in the communication holes 77 of the cover member 76 and connected to the push button 78. By pressing the push button 78, the contents filled in the double aerosol container 1A are discharged in a mixed state. As the contents of such a double double aerosol container 75, for example, a hair dye 1 and a hair dye 2 constituting a hair dye are filled in each double aerosol container 1A.

A1 to A3 containers 1A Inner swivel type double aerosol container 1B Outer swallow type double aerosol container 10 Manufacturing apparatus for double aerosol container 11 Necking machine 12 Inner bag insertion dedicated machine 13 Conveyor 14 Washer 20 Metal container 20a Shoulder 20c Part 20d tip part 21 rotating board 22 reciprocating board 23 container holder 23a-c container holder 24 necking processing station 24a-24b mold 25 crankshaft 26a supply line 26b unloading line 27 inner bag insertion device 30 inner bag 30a trunk 30b mouth 30c bellows 30d mouth end 31 container holding portion 32 inner bag support portion 32a recess 33 inner bag insertion portion 34 inner bag guiding device 34a holder 36 star wheel 36a recess 36b one of the positions 37 stopper 41 insertion rod 42 cam mechanism 44 rotation Shaft (drum cam)
45 Actuating shaft 46 Groove portion 47 Mover 51 Taper portion 52 First taper portion 53 Second taper portion 55 Inner bag guiding device 55a Taper portion 57 Inner bag guiding device 57a Cylindrical portion 57b Taper portion 57c Step portion 61 Valve 61a Stem 62 Packing 63 Top plate 71 Valve 72 Packing 73 Upper lid 73a Tip 75 Double duplex aerosol container 76 Cover member 77 Communication hole 78 Push button

Claims (16)

A metal container having a trunk and a mouth or / and a shoulder reduced in diameter from the trunk, and an inner bag inserted in the metal container and having the trunk and the mouth, A method for producing a double aerosol container in which a propellant is present between the inner bag and
A necking machine having a can holder for holding a low and low cylindrical can body and a plurality of drawing dies, and then drawing the top of the bottomed cylindrical can body supported by the can holder multiple times. After molding the metal container,
The inner bag is inserted into the metal container by an inner bag insertion-dedicated machine equipped with an insertion bag and a cam mechanism that reciprocates the insertion rod at a predetermined speed and a predetermined pressing force.
A method for producing a double aerosol container. It is provided coaxially with the metal container, is formed with a tapered portion whose inner surface diameter decreases toward the metal container side, and the inner diameter of the opening end on the metal container side is the inner diameter of the mouth of the metal container And through the cylindrical inner bag guiding device that is substantially the same as the inner bag, press the inner bag toward the metal container and insert it into the metal container.
The manufacturing method of the double aerosol container of Claim 1. When the inner bag is placed in a metal container, the front end of the inner bag is a method for manufacturing a double aerosol container configured to protrude from the end surface opening of the mouth of the metal container,
In the initial stage of insertion of the inner bag, the end surface opening of the metal container mouth is made the same as that of the inner bag guiding device so that the opening of the end surface of the metal container and the central axis of the inner bag guiding device are substantially the same. Substantially in contact with the sides,
At the end of insertion of the inner bag, the end opening of the mouth of the metal container is separated from the side surface of the inner bag guiding device.
The manufacturing method of the double aerosol container of Claim 2 . The body outer diameter D1 of the metal container is 25 mm ≦ D1 ≦ 30 mm,
The outer diameter S of the mouth of the metal container is 18 mm ≦ S ≦ 22 mm,
The inner diameter d1 of the inner bag is 20 mm ≦ d1 ≦ 23 mm,
The angle γ of the tapered portion of the inner bag guiding device is 20 degrees ≦ γ ≦ 30 degrees,
The manufacturing method of the double aerosol container of Claim 2 . The inner surface of the inner bag guiding device is composed of a cylindrical portion and a tapered portion in order from the upstream,
The outer diameter D1 of the body portion of the metal container is 50 mm ≦ D1,
The outer diameter S of the mouth of the metal container is 25 mm ≧ S,
The body outline d1 of the inner bag is 35 mm ≦ d1,
The angle σ of the tapered portion of the inner bag guiding device is 20 degrees ≦ σ ≦ 30 degrees,
The manufacturing method of the double aerosol container of Claim 2 . The taper portion of the inner bag guiding device is composed of a first taper portion having a taper angle larger from the upstream and a second taper portion having a taper angle smaller than the first taper portion.
The manufacturing method of the double aerosol container of Claim 2 . The barrel outer diameter D1 of the metal container is 35 mm ≦ D1 ≦ 53 mm,
The outer diameter S of the mouth of the metal container is 24 mm ≦ S ≦ 28 mm,
The diameter of the boundary portion S2 between the first tapered portion and the second tapered portion is 40 mm ≦ S2 ≦ 43 mm,
The inner diameter d1 of the inner bag of the inner bag is 32.5 mm ≦ d1 ≦ 41 mm,
The angle α of the first tapered portion is 45 degrees ≦ α ≦ 55 degrees,
The angle β of the second tapered portion is 20 degrees ≦ β ≦ 30 degrees,
The manufacturing method of the double aerosol container of Claim 6 . Until the inner bag is pressed toward the metal container and inserted, the air in the inner bag is vacuumed and inserted into the metal container while deforming the inner bag.
The manufacturing method of the double aerosol container of Claim 1 . After performing the drawing process, the roll is brought into contact with the outer periphery of the mouth, and a part of the mouth is further deeply drawn to form a metal container.
The manufacturing method of the double aerosol container in any one of Claims 1-8 . After inserting the inner bag into the metal container, the roll is brought into contact with the outer periphery of the mouth of the metal container, and a part of the mouth is further squeezed deeper.
The manufacturing method of the double aerosol container in any one of Claims 1-8 . The manufacturing method according to any one of claims 1 to 10 , wherein after inserting the inner bag into the metal container, a valve is inserted into the metal container, and the valve is fixed by crimping the valve against the metal container side. After inserting the inner bag into the metal container, the valve is inserted into the metal container, the upper cover is put on the valve and the mouth of the metal container, and the tip of the upper cover is caulked and fixed to a part of the metal container. The manufacturing method in any one of Claims 1-10 . Manufactured by the method for manufacturing a double aerosol container according to claim 11 or 12 ,
Double aerosol container. A combination of two double aerosol containers according to claim 13 ,
Double double aerosol container. Necking having a can holder for holding a cylindrical container with a bottom and having a plurality of dies for rotating and rotating intermittently, and approaching and separating from the rotating disk and necking the opening of the metal container A necking machine consisting of a reciprocating machine with at least a processing station;
An inner bag insertion-dedicated machine for inserting an inner bag into the necked metal container , comprising an insertion rod and a cam mechanism for reciprocating the insertion rod at a predetermined speed and a predetermined pressing force ;
A metal container that has been necked by the necking machine, and at least through a washing machine, and a conveyor for transferring to an inner bag insertion dedicated machine,
Double aerosol container manufacturing equipment. The inner bag insertion dedicated machine is provided coaxially with the metal container, has a tapered portion whose inner diameter is reduced toward the metal container side, and the inner diameter is the inner diameter of the mouth of the metal container The manufacturing apparatus of the double aerosol container of Claim 15 which has the cylindrical inner bag guidance | induction apparatus which has the opening end by the side of the metal container substantially the same.

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