KR930005955B1 - Metal container and method of manufacturing the same - Google Patents

Abstract

No content.

Description

Metal container and manufacturing method thereof

1 is an external perspective view of the metal container of the present invention.

2 is an elevational view of a part of the metal container of FIG. 1 terminated.

3 is an enlarged longitudinal sectional view of the bottom plate portion in which the bottom plate is fitted to the body.

Figure 4 is an enlarged longitudinal cross-sectional view of the canzer part that combines the body and the bottom plate.

5 is a process chart showing the manufacturing process of the metal container of the present invention.

6 is a longitudinal sectional view of a processing mold for curling the body and the bottom plate.

7 is an elevation view of a part of a metal container showing a first modification of the present invention.

8 is a partially enlarged longitudinal sectional view of the cancelor plate concerned in the first modification.

Fig. 9 is a partially enlarged longitudinal sectional view showing the fitting between the body and the bottom plate according to the first modification.

FIG. 10 is a partially enlarged sectional view schematically showing the deformation of the can body due to internal pressure loaded on the bottom plate in the first modification. FIG.

Fig. 11 is an elevation view of a part of the metal container showing the second modification of the present invention.

12 is a partially enlarged longitudinal sectional view showing the fitting between the body and the bottom plate of the second modification.

13 is a partially enlarged longitudinal sectional view showing the curling of the body and the bottom plate according to the second modification.

Fig. 14 is an elevation view of a part of the metal container showing the third modification of the present invention.

FIG. 15 is an enlarged longitudinal sectional view of a portion of a canzer plate according to a third modification. FIG.

16 is a partially enlarged longitudinal sectional view showing another example of the bottom plate according to the third modification.

17 is an external perspective view of a metal container showing a fourth modification of the present invention.

18 is a longitudinal sectional view of a fourth modification.

19 is a longitudinal sectional view showing a machining method of an opening part according to a fourth modification.

20 is a partial longitudinal sectional view showing another example of the forming position of the opening portion according to the fourth modified example and a machining method thereof;

21 is an external perspective view of a metal container showing a fifth modification of the present invention.

22 is a partially enlarged longitudinal sectional view of a fifth modification.

23 is an external perspective view of a metal container showing a sixth modification of the present invention.

24 is a partially enlarged longitudinal sectional view of the sixth modification.

* Explanation of symbols for main parts of the drawings

10: metal container 11: can body

12: top cover 13: cut off plate

14: spray nozzle 16: cylindrical portion

18: Coiling part 20: Metal plate material

27: cylindrical opening 29: bead

120: bend section 316a: bend

420: faucet 631: opening

The present invention relates to a metal container and a method of manufacturing the same.

Conventionally, a so-called three piece can composed of three members of a bottom plate, a cover and a body has been widely used as a food preservation means. Three-piece can is a cylindrical bending process to form a body by bonding the joints by bonding or welding, and then the bottom plate and the cover to the body (curling) to form a can. In this regard, a metal container made of a can is formed by drawing and ironing a cup-shaped can integrating the body and the bottom plate by using a single thin plate and curling the cover. Such cans are called two piece cans for three pier scans in terms of their component parts, and also called DI cans after the initials of drawing and ironing. .

DI cans can be made into any plate thickness by ironing the body wall, which makes it possible to reduce the weight, reduce the materials used, and the simple and high productivity of the process makes it suitable for mass production. It is rapidly spread for reasons such as low leakage and beautiful appearance, and is used in large quantities in beverage containers and cosmetic aerosol containers containing cans such as beer and carbonated beverages with high can internal pressure. Since the three-piercing can has a structure in which the body is bent in a cylindrical shape and joined as described above, the two-piercing can has no seam and the front printing is possible. Since the effect is good, it is bonded to the container etc. of the cosmetic material which requires the beautiful appearance.

However, since the conventional DI can integrates the body and the bottom plate and curls the cover, the curling part of the cover is exposed on the shoulder part of the container, which has a disadvantage in appearance. Thus, a structure in which such a DI can is reversed, the cover is integrally formed with the body, and the bottom plate is fitted to the bottom of the body for curling has been proposed. In such a can structure, since the cover and the body are integrally formed, a curling portion is not formed in the shoulder portion of the container, and therefore, the conventional DI can can obtain a metal container more excellent in appearance.

However, even in such a container, the appearance between the bottom plate and the body blocking the bottom of the container is curled toward the outside of the container and exposed to the outside.

One object of the present invention is to provide a metal container having an appearance of a monoblock structure in which the bottom portion and the ringing body of the body are not exposed to the outside and formed of a one piece member in appearance, and a method of manufacturing the same. .

Another object of the present invention is to provide the above-mentioned metal container and its manufacturing method which improve the sealing property at the joint part of a bottom plate and a body.

It is still another object of the present invention to provide the above-mentioned metal container which improves the pressure resistance strength of the bottom by improving the structure of the canister plate.

It is still another object of the present invention to provide a metal container as described above, which prevents an explosion accident when an incandescent plate is accidentally heated in a sealed state by using a canzer plate made of synthetic resin.

Still another object of the present invention is to provide a metal container as described above, which can exhibit self sealing when the canister plate is made of a synthetic resin.

It is still another object of the present invention to provide the above-mentioned metal container with a simple openable (easy to open) cover.

Still another object of the present invention is to provide a metal container as described above, which makes it possible to apply a valve for spraying a small diameter of 1 inch or less, which is neat and clean.

A further object of the present invention is to provide a metal container as described above, which makes it possible to apply a detachable cap with typical screwing means.

Other objects and advantages of the invention will be apparent from the detailed description of the invention.

The present invention relates to a metal container comprising a metal body integrally provided with a cover molded by drawing and ironing, and a bottom plate having a curved surface protruding toward the inside of the container and a cylindrical portion extending in parallel with the body. And a bonding means for adhering the cylindrical portion of the bottom plate to the body, and a curling means for curling the lower portion of the can body inward to the inner side of the container for holding the cylindrical load portion of the bottom plate. It is characterized in that the bottom plate is fitted to the lower part of the can body, and the bottom plate is adhered to each other by the bonding means, the bottom plate is fixed to the body by the curling means, and the curling portion is not exposed to the outside of the container.

The present invention further includes a process of forming a metal plate by drawing a metal sheet and drawing a cup-shaped material, and a process of forming a can body having an integrated cover and a body by ironing the cup-shaped material. And fitting a canister plate having a curved surface protruding toward the inside of the container and a cylindrical portion extending in parallel with the can body.

And a step of applying the adhesive means to the can body or the cylindrical part, and winding the body lower part toward the inside of the container, and kneading the cylindrical load part to join the bottom plate and the can body, and discharging the contents to the cover. It is characterized in that it comprises a process of applying the device.

With reference to FIGS. 1 to 4, a metal container 10 according to the present invention is shown. The metal container 10 is a body 11 having a top cover 12 integrally formed thereon, and a bottom plate fitted to the bottom of the body 11 and joined to the can body 11 by curling into the can. It consists of (13). The metal container 10 is represented as a form of an aerosol container in which a liquid or powdered cosmetic material is stored together with a pressurized gas, and is sprayed by pressing a finger on the upper center of the top cover 12 to eject the internals. 14) is attached.

The canister plate 13 has a cylindrical portion 16 and a curved portion 15 and a cylindrical portion 16 extending in parallel with the canned body 11 and an arcuate curved portion 15 protruding toward the inside of the container as shown in FIG. A tapered portion 17 extending from the portion 16 is provided. The taper portion 17 maintains the contraction amount between the cylindrical portion 16 and the body 11 at an appropriate ratio when the bottom plate 13 is fitted to the body 11 to perform the roughing process. Prevents wrinkles from occurring The cylindrical portion 16 and the body 11 of the bottom plate 13 are adhered to each other by an adhesive, so that the sealing property and the bonding strength can be improved. As shown in FIG. 1, since the curling part 18 which curled the body 11 and the bottom plate 13 is curled toward the inside of a container as shown in FIG. 2, FIG. Since the curling part 18 is not exposed in the bottom part of (10), it can show the appearance of the monocock structure formed from the member of the one-piece appearance, and can obtain the optimal container as a cosmetic container which requires the beauty of the appearance.

With reference to FIG. 5, the manufacturing method of the metal container which concerns on this invention is described. First, the cup material 21 is blanked and drawn by a cupping press from a metal plate 20 such as aluminum or stainless steel. The cup material 21 is sent to the next step 22 (DI press) to redraw to reduce the diameter, and then the ironing die is passed through the ironing die 23 to perform the ironing process 23 in the height direction. Simultaneously shape the wall of the body to the required thickness.

In this way, the can body 24a which has finished DI processing is sent to a trimmer attached to the DI press, where the lower edge 25 is trimmed to a certain dimension. The bottom edge trimmed can is sent to the bead forming process 26 at the inlet of the spray nozzle. In the bead forming step 26, first, molding is performed on the top cover 12 and the cylindrical openings 27 protruding upward from the center of the cover are formed by press working. The cylindrical opening 27 matches the diameter of the attachment portion of the spray nozzle to be mounted.

The upper end 28 of the cylindrical inlet 27 is then cut off and subsequently curled to form the beads 29. The bead-shaped canned body 24b is conveyed to a washing | cleaning process (not shown), and the inner and outer surfaces are degreased with alkali showers, and washed with water and dried. The cleaned can body 24b is coated with an inner surface paint by a spray method by the spray apparatus 30 of the inner surface coating process 29 and dried. The inner coated body 24c is sent to an outer coating, printing process 31, for example by a roller coating by a coat roller 32, a shoulder roller 33 to the desired outer surface. Coat and print are performed. The inner coating step 29, the outer coating step, and the printing step 31 may be performed in the reverse order.

In this way, the inner and outer surface coated and printed body 24d is then sent to the bottom plate attaching step 34 to which the bottom plate 13 is attached. In the bottom plate attaching step 34, first, the adhesive is spray-coated to the lower inner peripheral surface of the body 24d, and then the bottom plate 13 is fitted. After sufficient adhesion between the cylindrical portion 16 of the fitted bottom plate 13 and the lower edge of the body 11 is sufficiently achieved, it is inserted into the molding die 35 shown in FIG. 6 and pressed down in the longitudinal direction of the can. The portion 16 and the body 11 are integrally curled toward the inside of the container and joined. After the completion of curling, the spray nozzle 14 is attached to the inlet bead 29 to complete the manufacture of the metal container according to the present invention.

However, the curling here is not limited to the curling shape of the circular section as shown. In short, any thing is sufficient as long as it is firm enough to fix and adhere the bottom plate to the body, and the bottom plate is curled and folded inward. The adhesion between the body 11 and the bottom plate 13 is not limited to that by the adhesive sprayed on the above and the lower body.

The inner surface coat of the can body 24c may be formed of a thermoplastic synthetic resin, the bottom plate 13 may be fitted, and the inner surface coating layer made of the thermoplastic synthetic resin may be melted and bonded by electromagnetic induction heating or laser light. As a result of the metal plates being preliminarily sealed and then curled in the fitting portion by melting in the thermoplastic synthetic resin layer, the airtightness of the joint between the body 11 and the bottom plate 13 is further promoted, and the airtightness of the joint is improved. This ensures that the joints do not leak even if they remain in stock over the long term. The body 11 and the bottom plate 13 are preferably formed of the same material. As a result, a difference in thermal expansion does not occur between the two, so that a stable seal structure in which gaps do not occur even between heating and cooling cycles can be obtained.

7 to 10 show a metal container 110 according to the first modification according to the present invention, all the body 111 including the top cover 112, the container 110 and the bottom plate 113 It is made of aluminum. As described above, the bottom plate 113 has a spherical shape with a central top projecting upward, and a peripheral portion thereof, that is, a boundary with the cylindrical portion 116, is formed with a locally thin curved cross section 120. The outer circumferential diameter of the cylindrical portion 116 is predetermined in relation to the can body 111 and is press-fitted in a so-called interference fit state. An adhesive is present between the cylindrical portion 116 and the body 111. In addition, the fitting degree of the body 111 and the bottom plate 113 is preset in accordance with a subsequent curling process, and the lower end of the body 111 is a cylindrical part by the length corresponding to the cross-sectional length of the curling part 118. It is set in the state which protruded from the lower end of 116. The radius of curvature of the inner circumferential side of the bent cross section 120 is preferably set to about 1 to 3 times the thickness of the bottom plate 113.

When the draw processing is performed in such a shape, the thickness of the curved cross section 120 becomes thin as 80% of the other parts. In particular, in this embodiment, the inner diameter of the body 111 is 50 mm, the thickness of the bottom plate 113 is 3.8 mm, and the thickness of the bent section 120 is about 3.0 mm.

The radius of curvature of the spherical portion of the bottom plate 113 is set to 50 mm, similar to the inner diameter of the body. Next, when curling processing is performed using the forming die shown in FIG. 6, the lower end of the cylindrical portion 116 is brought into contact with the inner peripheral lower edge of the curling portion 118. FIG.

In the pressure vessel configured as described above, when the internal pressure rises and the curvature of the bottom plate 113 becomes larger than the initial value, the curved cross section 120 enters the width of the body 111 side as shown in FIG. ) Improvement of seal part welding is planned.

In other words, when the internal pressure of the pressure vessel occluded by the bottom plate 113 rises, the same pressure force acts as the concentrated load acted on the center portion of the bottom plate 113, and the center portion of the bottom plate 113 protrudes downward. This reverse deformation will be performed. At this time, since the circumferential edge of the bottom plate 113 is a locally thin curved end portion 120, the stiffness in the inversion deformation stopping direction is weakened, and at the stage until the inversion deformation, the diameter of the circumferential edge of the bottom plate 113 is a container. Try to expand as the internal pressure increases.

However, this diameter enlargement is prevented by the body 111. In addition, since the cylindrical portion 116 of the bottom plate 113 is in contact with the curling portion 118 and movement in the axial direction is prevented, the bottom plate 113 is pressed against the body 111 side by the cylindrical portion 116. Force is generated, and the contact pressure of the adhesive portion between the cylindrical portion 116 and the body 111 increases. This increase in contact pressure is particularly remarkable at the upper end of the cylindrical portion 116, that is, in the vicinity of the bent end portion 120 (see FIG. 10).

As described above, in the case of the pressure vessel in which the bottom part is sealed, the components of the body 111 and the bottom plate 113 exhibit sufficient pressure resistance by the already mentioned action even in aluminum inferior in rigidity.

In addition, since the curling portion 118 is formed toward the inner circumferential side of the container 110, it is not unsatisfactory in appearance compared to the conventional one in which the curling portion 118 is exposed to the outside. In addition, in the case of employing an adhesive having a relatively long curing time (a few minutes), the lower end of the cylindrical portion 116 and the lower end of the body 111 are coincident with the bottom plate 113 as shown in FIG. It may be set to the degree of press fit. This processing proceeds as the bottom plate 113 is press-fitted inward by the subsequent curling process, and the bottom plate 113 is stopped at a predetermined position at the completion of the curling process, and the lower end of the cylindrical portion 116 is the curling portion. It comes in contact with the inner circumference of 118. The material of the body 111 and the bottom plate 113 including the top cover 112 may be a tin plate or a surface treated steel sheet.

11 to 13 show a metal container 210 according to a second modification according to the present invention, which is carried out by an aerosol pressure container, and the body 211 including the top cover 212 is made of aluminum, and the bottom plate ( 213 is formed of a synthetic resin having a softening point of about 80 ° C., and the bottom plate 213 is press-fitted to the lower end of the body 211 to a predetermined fit in advance, and the body of the body 211 is subjected to the softening point temperature immediately under the temperature condition. When the lower end is curled, the edge of the inner circumferential edge of the curling portion 218 formed by the curling is encroached into the inner circumferential surface of the cylindrical portion 216 perpendicular to the outer circumferential edge of the bottom plate 213. do.

Next, the actual production of each part will be described in detail. The body 211 including the top cover 212 is formed by the machining step shown in FIG. On the other hand, the bottom plate 213 is formed in a plate shape as shown by injection molding using synthetic resin materials such as polyethylene terephthalate (PET), acrylonitrile-based thermoplastic resin and polypropylene resin (PP). The bottom plate 213 has a spherical shape with a central top portion projecting upward, and a cylindrical portion 216 is formed over its circumference at its peripheral edge.

The outer diameter of the cylindrical portion 216 is set to a predetermined dimension in relation to the body 211 and is press-fitted in a so-called interference fit state. An adhesive is applied between the cylindrical portion 216 and the body 211. In addition, the degree of fitting between the body 211 and the bottom plate 213 is set in accordance with the curling process, and as shown in FIG. 12, the body 211 has a length corresponding to the cross-sectional length of the curling portion 218. Is set in the state which protruded from the lower end of the cylindrical part 216.

Subsequently, the combination of the body 211 and the bottom plate 213 is grown under the temperature condition near the softening point temperature of the synthetic resin constituting the bottom plate 213 by using the metal mold 235 as shown in FIG. Earl.

Accordingly, as shown in FIG. 11, the lower end of the cylindrical portion 216 is curled in contact with the inner peripheral edge of the curling portion 218, so that the inner circumferential end (tip) of the curling portion 218 is cylindrical. It is in a state encroaching on the inner circumferential surface of). In the case of a metal container where pressure resistance is not so required, the bottom plate 213 may be made of a material having a low rigidity. In this case, it is not necessary to heat the softening point temperature of the constituent material during curling processing.

In addition, in the above modification, the material of the body 211 including the top cover is made of aluminum, but it may be replaced with a tin plate or a surface-treated steel sheet. According to the metal container 210 of this embodiment, since the cylindrical body 216 of the bottom plate 213, the body 211, and the curling part 218 are wound and joined together, the body ( The airtight portion of the joint between 211 and bottom plate 213 is secured, and the container is sealed.

If the sealed container is incinerated by mistake, the entire container is placed under a high temperature condition. Since the bottom plate 213 is made of synthetic resin, the bottom plate 213 is melted or extremely softened. Therefore, the bottom plate 213 is thermally damaged or broken at a stage in which the internal pressure of the container is not so high, and the pressure is released from its broken or broken portion.

Therefore, the bottom plate 213 is thermally damaged or broken at a stage in which the internal pressure of the container does not become too high even if the container is incinerated by mistake, and the pressure is released from the broken or broken portion thereof. As in the case of explosion, it is safe without the explosive rupture.

14 to 16 show a metal container 310 of the third modification according to the present invention, wherein the body 311 including the top cover 312 is made of aluminum, and the bottom plate 313 is made of elastic synthetic resin. The body 313 is press-fitted to the lower end of the body 311 to a predetermined degree of fitting in advance so that the lower end of the body 311 slightly protrudes from the lower end of the cylindrical portion 316 of the bottom plate 313 and under this fitting condition, the body 311 Coordinate the lower end of the

The lower end of the body 311 and the lower end of the cylindrical portion 316 are bent to the inner circumferential side by this curling, so that the bent portion of the lower end of the cylindrical portion 316 is inscribed on the inner circumferential surface of the curling portion 318.

Next, the actual production of each part will be described in detail. The body 311 including the top cover 312 is formed by a machining process shown in FIG. 5, and the bottom plate 313 is injected using a synthetic resin material. By shaping | molding, it shape | molds in dish shape like FIG.

The bottom plate 313 has a spherical upper portion with a central top portion projecting upward, and a cylindrical portion 316 is formed at its circumferential edge, and the outer circumferential surface of the cylindrical portion 316 is arcuate inward. The outer circumferential diameter of the cylindrical portion 316 is set to a predetermined dimension in relation to the body 311 and is press-fitted in a so-called interference fit state. An adhesive is applied between the cylindrical portion 316 and the body 311. In addition, the fitting degree of the body 311 and the bottom plate 313 is set to predetermined according to the subsequent curling process similarly to the modification of FIG. 13, and the can body is the length corresponding to the arc length of the curling part 318. The lower end of 311 is set in a state protruding from the lower end of the cylindrical portion 316.

Subsequently, the combination of the can body 311 and the bottom plate 313 is curled using the curling die 235 as shown in FIG. 13 at the time when the adhesive is cured, and as shown in FIG. The small range of the lower part of the part 316 is cocked in the state wound together.

In this state, the bent portion 316a at the lower end of the cylindrical portion 316 is in close contact with the inner circumference of the curling portion 318 by a predetermined range. In particular, in this embodiment, since the outer circumferential surface of the lower end of the cylindrical portion 318 is formed inwardly on the arc surface 330a as shown in FIG. 15, the lower end portion of the cylindrical portion 316 is inscribed in the inner circumferential surface of the curling portion 318. Is bent inward, and the bent portion 316a of the lower end of the cylindrical portion 316 is in a state with elastic return capability.

Accordingly, the bent portion 316a is pressed against the inner circumferential surface of the curling portion 318 with a constant pressing force, and the pressing state is maintained over the entire lower end of the cylindrical portion 316. In other words, the junction between the bottom plate 313 and the inner circumferential surface of the body 311 is the pressure contact portion between the outer circumferential surface of the cylindrical portion 316 and the inner circumferential surface of the body 311, and the lower bend portion 316a and the curling portion of the cylindrical portion 316. The airtight portion with the 318 will hold | maintain airtightness.

Among the above-mentioned contact portions, in particular, in the latter contact portion, the elastic return ability of the lower bend portion 316a of the cylindrical portion 316 always acts in the airtight direction, and thus, even when the bottom plate 313 is employed as the synthetic resin material, (self sealing) is exhibited, and the airtightness of the junction part of the bottom plate 313 and the body 311 improves more.

Furthermore, as shown in FIG. 16, the magnetic sealability caused by the elastic return of the lower bend 316a is inclined to ablate the lower inner circumferential surface of the cylindrical part 316 toward the tip. The same effect is also provided when the inclined surface 330b becomes thin.

In the case of a metal container requiring pressure resistance, the bottom plate 313 is composed of a material having high rigidity. In this case, the bottom plate 313 is composed of a material having low workability at room temperature. Heat to temperature

As such a material, for example, synthetic resins such as polyethylene terephthalate (PET), acrylonitrile-based plastic resins, and polypropylene (PP) are employed, but in the case of adopting this material, curling processing is performed under temperature conditions near the softening point. .

As a result, the lower end portion of the cylindrical portion 316 is easily bent during curling processing, and the curved portion 316a is formed at the lower end portion of the cylindrical portion 316 without cracking or the like, and the curved portion 316a is formed. It is pressed against the inner circumference of the curling part 318, and elastic return force remains in the bending part 316a in the state returned to normal temperature.

Furthermore, in the processing step of the above embodiment, the curing process is performed after the adhesive is cured, but the top of the bottom plate 313 is fixed by the fixing pawl inserted in the upper opening of the body 311 during the processing. It is possible to set the bent portion 316a of the cylindrical portion 316 to an appropriate position in contact with the inner surface of the curling portion 318.

17 to 20 show a metal container 410 of the fourth modification according to the present invention, which is a beverage container such as a beer or a carbonated beverage having an opening that can be easily cut by pressing the cover 412 with a finger. Is provided. The body 411 integrally holds the top cover 412 as in the above-described embodiments, and the bottom plate 413 is fitted to the lower portion of the body 410 in the same manner as in the above-described embodiments, and is joined.

As shown in FIG. 18, the cross-sectional shape of the top cover 412 forms a ridge 421 having protrusions as opening spigots 420 that can be pressed by a finger at the center thereof, The ridge 421 and the convex convex portion 422 are formed in an annular shape. An annular bottom portion 423 having a predetermined width is formed between the raised portion 421 and the convex portion 422, and as shown in FIG. 19, the cutting tool 430 is rotated while the container 410 is rotated. It encroaches in the center part of 423, and forms the annular thin part 424 like FIG. The thickness of the thin portion 424 may be set to about 0.1 mm (20% of the above-described plate thickness) when the thickness of the plate of the top cover 412 constituent material is about 0.5 mm.

The opening of the container 410 produced in this manner can be easily opened by cutting the nipple 420 with one finger and knocking it down by the thin portion 424. Since the convex portion 422 protrudes on the outer circumference of the opening after opening, when food is accommodated in the container 410, the cutout of the open portion is surrounded by the convex portion 424, so the lips are closed. There is no danger of cutting.

Further, the thin portion 424 may be formed at the base of the nipple 420, as shown in FIG. 20, in which case the cutting tool 430a is encroached at right angles to the rotating surface. It becomes.

The simple opening can produced in this manner is opened in a state in which only the tap 420 is cut off from the top cover 412 by pressing the tap 420 to one side. In any of the above embodiments, the nipple 420 may be formed separately from the top cover 412 so as to caulk the nipple 420 or to be attached to the top cover 412 by adhesion.

21 and 22 show a metal container 510 which is a fifth modified example according to the present invention, and the spray nozzle 514 attached to the top cover 512 is a smaller diameter valve than the one-inch valve normally used.

In the metal container according to the present invention, the center portion of the top cover 512 is upwardly formed at the time of forming the opening bead 529 formed in the top cover 512, as described in the machining process related to FIG. Since the cylindrical opening 527 is formed by protruding and the cylindrical opening 527 is curled to form the beads 529, any diameter that matches the diameter of the attachment portion of the spray nozzle 514 is formed. The cylindrical opening 527 can be formed, and the spray nozzle 514 of any diameter can be attached almost without limitation. As a result of the diameter of the cylindrical opening 527 coinciding with the aperture with the spray nozzle, the draw-in of the aperture is almost reduced when the cylindrical opening 527 is curled to form the bead 529. none.

Therefore, there is no fear that wrinkles due to processing distortion may occur on the inner surface of the bead, and the inner circumferential surface of the bead 529 becomes a smooth and beautiful surface. As a result, as a sealing material interposed between the bead 529 and the nozzle mounting portion, a rubber coating layer formed by applying liquid rubber can be used, and the cost can be reduced. In addition, the use of the small-diameter spray nozzle 514 makes it possible to provide a container excellent in design, such as a cosmetic material container, with a smooth appearance of the container 510.

23 and 24 are provided as a container which shows the metal container 610 of the sixth modification according to the present invention and has a cap 630 detachable by a screw portion. The body 611 is integrally provided with the top cover 612 as in the above-described embodiments, and the bottom plate 613 is fitted to the lower portion of the body 611 in the same manner as the above-described embodiments, and curled inward. Are bonded. The cylindrical opening 627 described in the machining process of FIG. 5 remains in the central portion of the top cover 612 without being formed as a bead, and the opening 631 is formed by cutting off the upper end. On the outer circumferential surface of the cylindrical opening 627, a screw barrel 650 made of synthetic resin is fixedly fixed upward.

Then, the cap 630 is detachably attached to the screw barrel 650. When the cylindrical part opening part 627 is sufficient thickness, you may form a thread directly in the outer peripheral surface.

The description of the above-described embodiments is merely a description of preferred embodiments of the present invention, and various design changes can be made without departing from the basic technical spirit of the present invention.

Claims (27)

A metal body device 11 having an integrated top cover 12 formed by drawing and ironing processing, and a curved surface protruding toward the inside of the container and extending parallel to the body device. The bottom plate apparatus 13 which holds the cylindrical part 16, and the extraction apparatus which is applied to the said top cover 12, and can take out a thing from a container, and also the cylindrical part 16 of the said bottom plate Fitting the bottom plate to the lower part of the body by using an adhesive means for adhering the base and the base, and a curling means for firmly supporting the lower portion of the cylindrical part of the bottom plate by curling the lower part of the body inwardly and curling toward the inside of the container. The metal container (10), characterized in that the bonding by the two, the bottom plate is fixed to the body by the above-mentioned curling means and the curling portion (18) is configured not to be exposed to the outside of the container. The metal container according to claim 1, wherein the bottom plate (13) is made of a metal material. 3. The curling process of the body and bottom plate according to claim 2, wherein the bottom plate (13) formed of a metal material is formed between the curved surface (15) protruding toward the inside of the container and the cylindrical portion (16) extending in parallel with the body (11). A metal container comprising an inclined portion (17) extending in a straight line in cross section for bringing about an appropriate reduced value at the time. The bottom plate 113 formed of a metal material has a locally thin curved end surface portion 120 formed at a boundary between the curved surface and the cylindrical portion 116, and as a result, the bottom plate 113 formed of a metal material is formed in the curved surface of the bottom plate. Metal container 110, characterized in that to increase the contact pressure between the cylindrical portion 116 of the bottom plate 113 and the body in the radial direction in the bending cross section 120 when the pressure is loaded. 2. The metal container (210) according to claim 1, wherein the bottom plate (213) is made of a synthetic resin material, and as a result, the bottom plate breaks first during heating in the sealed state of the container, thereby preventing sudden explosion of the container. 6. The bottom plate made of synthetic resin has a bent portion 316a which elastically returns to a lower end thereof, thereby bringing pressure contact between the lower bent portion 316a and the inner surface of the curling portion 318 to obtain self-seal. A metal container comprising a sealing). 7. The bottom plate 313 is formed on the lower outer circumferential surface of the bottom plate 313 again with an inner arc surface 330a, thereby further improving the inner surface of the curling portion 318 by elastic return of the lower bend portion 316a. A metal container characterized by bringing about a close adhesion. The bottom plate 313 is formed with an inclined surface 330b which is inclined to the lower inner peripheral surface thereof and becomes thin toward the tip, thereby further improving the inner surface of the curling portion by elastic return of the lower curved portion 316a. Metal container 310, characterized in that to bring a close adhesion. The metal container according to claim 1, wherein the curling portion is integrally wound with the lower end of the bottom plate on its inner surface. The metal container according to claim 1, wherein the cylindrical load end of the bottom plate is brought into contact with an inner surface thereof without being wound by a curling means. The metal container according to claim 1, wherein the curling means winds and holds the lower end of the bottom plate on its inner surface. The metal container according to claim 1, wherein the bonding means for joining the body and the bottom plate is an adhesive applied to an inner surface of the body and an outer surface of the bottom plate. The metal container according to claim 1, wherein the bonding means for joining the body and the bottom plate is a thermoplastic resin layer coated on an inner surface of the body. The metal container according to claim 1, wherein the ejection device applied to the top cover is a spray nozzle (14) attached to the top cover (12). 15. The spray nozzle according to claim 14, wherein the top cover includes a spray nozzle attachment bead 529 formed by a cylindrical cylindrical opening 527, and the spray nozzle is fixed by attaching the attachment portion of the spray nozzle to the beads 529. Metal container (510) characterized in that the nozzle is attached to the top cover (512). The metal container according to claim 1, wherein the extraction device to which the top cover is applied is an opening formed by removing a part of the top cover from the top cover. 17. The method of claim 16, wherein the top cover 412 is partially projected upward to hold a finger squeezed spigot 420, and a thin opening is provided around the spigot 420, thereby providing a circumference. The metal container which presses a nipple with a finger, cuts it from an opening part, and forms an opening part. The metal container (610) according to claim 1, wherein the take-out device applied to the top cover is a cap (630) detachable by a screw part. The metal container according to claim 1, wherein the top cover has a cylindrical opening projecting upward and forms a threaded portion on an outer circumferential surface of the opening, thereby making the cap (630) detachable. 20. The metal container according to claim 19, wherein the cap (630) is detachable by inserting a screw barrel (650) made of a synthetic resin having a screw portion on an outer circumferential surface of the cylindrical opening. A process of drawing a metal plate material to draw the cup-shaped material 21, a process of drawing and ironing the cup-shaped material to form a can integrally having a top cover and a body, a body and / or the cylinder described above A step of applying an adhesive means to the part, a step of fitting a bottom plate having a curved surface protruding toward the inside of the container and a cylindrical part extending in parallel with the body to the lower part of the body, and winding the lower part of the body toward the inside of the container And a step of joining the bottom plate and the body by applying a lower portion of the cylindrical portion, and applying a takeout means of the object to the top cover. 22. The method according to claim 21, further comprising the step of forming a cylindrical opening by protruding upward from the central portion of the top cover after forming the can from the cup-shaped material 21 by drawing and ironing. Method of producing a metal container. 23. The method of manufacturing a metal container as claimed in claim 22, comprising the step of curling the cylindrical opening (527) to form a spray nozzle attachment bead (529). 23. The method of manufacturing a metal container according to claim 22, further comprising a step of forming an opening by cutting off an upper end of the cylindrical opening, and forming a cap screwing thread on an outer circumferential surface of the cylindrical opening (627). 22. The method of manufacturing a metal container according to claim 21, further comprising a step of forming a spigot (420) by protruding upward from a central portion of the top cover, and forming a thin opening around the spigot. 22. The method of manufacturing a metal container according to claim 21, comprising the step of applying an inner coating to an inner surface of the can formed by drawing and ironing. 22. The method of manufacturing a metal container according to claim 21, further comprising a step of performing outer coating and printing on an outer surface of the can formed by drawing and ironing.

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