JPH0329658B2 - - Google Patents

Description

Detailed Description of the Invention (a) Technical field to which the invention pertains The present invention relates to containers for storing various materials, particularly containers suitable for storing cosmetic products such as cosmetic creams or lotions, and the manufacture thereof. The present invention relates to a method and a manufacturing apparatus.

The container of the present invention has a metal skin and an inner container housed within the skin, the skin covering the neck of the inner container from the base to the shoulder and covering the side peripheral wall;
It is further bent inward to extend over a generally flat metal base plate attached to the bottom of the container.

In the manufacturing method of the present invention, a metal skin is formed into a cup shape, coated on an inverted inner container, and then bent onto a metal bottom plate attached to the bottom of the inner container. By preforming the shoulder portion of the skin, unsightly lines such as lines and wrinkles due to internal stresses will not occur in the visible upper portion of the container.

Further, the manufacturing apparatus of the present invention provides an apparatus exclusively used for implementing the manufacturing method.

(b) Description of the Prior Art Various types of containers or containers with different sizes and shapes are provided for storing various materials. Typically, the size, shape, color, or label of the container will vary depending on the specific material contained therein. It is often desirable for various types of cosmetic products, such as cosmetic creams and lotions, to be packaged in more elegant containers than simply a plain container with a label or distinctive display. There is.
Therefore, containers whose outer shells are coated with metal have been provided as containers for cosmetic products. On the other hand, the metal casing can now be given the desired coloration, and the golden coloration obtained by anodizing the textured aluminum casing is particularly elegant. However, in the container structure obtained by the prior art, the inner container is bent into a portion of the metal exterior covering the top curved portion or shoulder portion of the inner container so as to follow the shape of the container. Streaks and wrinkles due to stress tend to appear.

In some container structures using a synthetic resin inner container, the edges of the metal outer container remain in contact in order to avoid wrinkles. This method is not preferable because a portion of the surface of the synthetic resin of the inner container constituting the container remains exposed. The inner container made of synthetic resin is forcibly fitted into a metal outer case which is pressed into a cup shape with a size and shape that accommodates the inner container. The method of forcibly fitting the metal exterior onto the inner container cannot be applied to glass jars (wide mouth bottles). This is because it is extremely difficult to adequately control the dimensions and shape of glass jars during manufacturing. For this reason, conventionally available glass jars with a metal exterior always have wrinkles near the shoulder area of the jar because the metal exterior is attached to the correct position. .

In these traditional metal-clad glass jars or bottles, the metal exterior consists of a bottom and a
It is shaped like a cylindrical capsule or cup with a circumferential wall extending longitudinally and sized and shaped to receive a jar or bottle. On the other hand, containers such as glass jars with an inner container and a metal exterior have an elegant appearance, but on the other hand, the lines and wrinkles caused by the internal stress that occur in the shoulder area make the elegant appearance unattractive. I'm making it a thing. Accordingly, it would be desirable to have a container with a metal skin or sheath that does not have the stress-based lines and wrinkles found in the shoulders of conventional container constructions. Furthermore, the method and apparatus for manufacturing this type of container are suitable for applying a metal exterior to a glass jar,
Also, there are no lines or wrinkles caused by stress on the metal exterior,
It would be desirable to have a method and apparatus that does not significantly increase manufacturing costs.

(C) Purpose of the Invention The present invention provides a container or interior that has a bottom, a circumferential side wall rising substantially perpendicularly from the bottom, and a top or shoulder extending inward at the upper end of the circumferential wall. The present invention relates to a container in which a metal skin is provided covering the circumferential side wall and the top or shoulder of the container. The container may be provided with a neck extending from the shoulder. A lid or cap is attached to this neck to seal the container. The metal skin covers all visible surfaces of the container so that no part of the inner container is exposed when the cap is attached, providing a particularly elegant container and ideal for cosmetic applications. To provide a container particularly suitable for use in typical containers.

The metal skin attached to the container consists of two pieces. One piece is a generally flat metal base plate affixed to the bottom of the container and extending to the bottom of its circumferential side walls. The other piece is a metal shell having an inwardly curved flange-like shoulder and an opening aligned with the opening of the container at one end of the peripheral wall, and the other end of the metal base plate. It is bent so that it overlaps the edge of the. By forming the curved flange-like shoulder on one end of the metal shell, the visible part of the container is
There is no need to bend and form the outer skin. During the manufacture of the container, the inner container is inserted upside down into a pre-curved and formed metal skin, and the open bottom edge of the metal skin is bent onto a metal bottom plate above the bottom of the inner container. . Thus, even if the internal stresses in the metal shell create streaks or wrinkle lines, they occur at the bottom of the container and not at the visible shoulders.

It is therefore an object of the present invention to provide an improved container with a metal skin.

Another object of the invention is to provide an improved method for manufacturing containers with metal skins.

Another object of the present invention is to provide a cylindrical container having a shoulder portion extending inward and a neck portion formed with a thread, the metal skin of the shoulder portion being free from streaks and wrinkles due to internal stress. An object of the present invention is to provide a container having an improved metal skin that does not generate lines.

Still another object of the present invention is a container for cosmetics having a metal outer skin, wherein no part of the surface of the inner container is exposed when the container is covered with a lid or a cap. Our goal is to provide the following.

Yet another object of the present invention is to provide an apparatus for manufacturing a container having a metal skin according to the present invention.

Other objects and effects of the present invention will be made clear later.

(d) Structure of the Invention The container of the present invention consists of a metal skin and an inner container placed inside the skin. The inner container is
It has a bottom, a circumferential wall connected to the bottom, a shoulder extending inward at the top of the circumferential wall to form an internal space, and an opening formed in the shoulder and communicating with the internal space. , the metal outer skin covering the inner container is formed of a metal bottom plate fixed to the bottom of the inner container and a metal outer skin, and the outer skin includes a peripheral wall portion that covers a peripheral side wall of the inner container; A flange portion extending inwardly at one end of the peripheral wall portion to cover the shoulder portion leading to the opening of the inner container, and a flange portion curved inwardly at the other end of the peripheral wall portion so as to overlap with the metal bottom plate at the bottom of the inner container. It is characterized by having a narrowed portion.

Further, the method for manufacturing a container having a metal skin of the present invention includes a peripheral wall portion to cover a peripheral side wall of the inner container, and a peripheral wall portion that is curved inward at one end to cover a shoulder portion of the inner container. a curved shoulder;
forming a metal outer shell having an opening with dimensions corresponding to the opening of the inner container; and inserting the inner container so that its shoulder abuts against the curved shoulder of the metal outer shell. and bending the other end of the metal outer skin inward so as to overlap the metal substantially flat bottom plate fixed to the bottom of the inner container. It is.

Furthermore, the apparatus for manufacturing a container having a metal outer skin of the present invention includes a holding member forming a recessed surface for receiving the metal outer skin, and a first inoperative position of the holding member remote from the recessed surface. , approaching the holding member from the inoperative position and assuming a second operating position in which the metal outer skin protruding above the recessed surface of the holding member is bent inward. It is characterized by comprising a movable bending tool.

(E) Description of Examples FIG. 1 shows an inner container, a metal outer skin, a metal plate, and a pad that constitute a container having a metal skin according to one embodiment of the present invention shown in FIG. 2 before being molded. It is shown with the cap in its current condition.

The illustrated container with a metal skin consists of a substantially cylindrical jar (wide-mouth bottle) 10, a closure cap 11, a metal outer casing 12, a metal bottom plate 13, and an adhesive. It consists of 14 sexual pads. The pad 14 is used to attach the bottom plate 13 to the jar 10, absorb shock, and eliminate the space between the jar 10 and the metal shell 12 due to manufacturing tolerances of the molded glass jar 10. used. As shown in FIG. 2, when a jar with a metal skin is manufactured according to the present invention, the jar 10 is covered over its entire height with a metal skin, and this skin covers the cap. 11 extends below the cap 11 when the container is closed.

The jar 10 of the above embodiment is a wide-mouth cylindrical glass bottle, and as shown in the cross section in FIG. It has a circumferential side wall 22 forming a substantially cylindrical depression. A shoulder portion 24 is formed at the top of the circumferential wall 22 . The shoulder 24 extends horizontally and inwardly,
It has a flange portion 26 reaching a vertically extending neck portion 27 having a male thread 28 on its outer periphery. The cap 11 is also covered with a metal skin 15. A female thread 17 is formed inside the cap 11 and is adapted to be fitted into the jar 10 in cooperation with the male thread 28.

The metal skin covering the jar 10 consists of two parts. The first portion is a cylindrical outer skin 12 having a substantially cylindrical peripheral wall portion 31, an inwardly extending flange portion 33 formed at one end thereof, and an opening 34 formed in the central portion thereof. and a curved shoulder 32. The other end of the peripheral wall portion 31 of the outer skin 12 terminates in an open edge 36. The cylindrical skin 12 is sized and configured to fit snugly over the jar 10, and the opening 34 is sized and configured to allow the neck 27 of the jar 10 to pass therethrough. The inner surface of the flange portion 33 extending inwardly of the metal outer skin 12 abuts against the shoulder portion 24 of the jacket 10, as shown in the upper half of FIG. By extending the flange portion 33 to the neck portion 27, the cap 11 is attached to the jar 10.
When installed, no surface of the jar 10 is exposed.

The second part of the metal skin is a metal bottom plate 13
It is fixed to the outer surface of the bottom 21 of the jar 10 by a pad 14 having adhesive layers on both sides. In the embodiment shown in FIG. 1, the bottom plate 13 is formed with an annular ridge 41 having an appropriate width and bulging downward in the shape of a thread bottom. The ridge 41 is bulged away from the bottom of the jar 10 and provides a suitable base for supporting the jar 10. The outer peripheral wall 41 of the protruding ridge 41 is located at a higher position than the remaining surface of the bottom plate 13 facing the jar 10 at the outer peripheral edge of the metal bottom plate 10, and is parallel to the surface of the jar 10 at the outer peripheral edge. As will be described later, the edge of the peripheral wall 31 of the outer skin 11 is overlapped with the formed edge 43 in an overlapping manner.

The metal skin may be made from any material that can be formed into the desired shape. Metal materials include aluminum, brass, copper, silver, gold, and others. Suitable metal materials are aluminum or brass, which are commonly used in the cosmetics industry.

The metal bottom plan 13 and outer skin 12 are formed by ordinary cold metal plastic forming. The bottom plate 13 is formed by cutting out a circular plate from a sheet material and press-molding it. The metal shell 12 is repeatedly molded using a series of molds of slightly different shapes until the desired cup shape with a curved shoulder 32 is achieved, and after the shell 12 is formed, the opening 34 is formed by cutting. The edges of the bottom plate 13 and the outer skin 12 are molded and finished, and their outer surfaces are anodized to a desired finish. If desired, a label is formed on the surface using a mask during anodizing.

In order to manufacture a jar having a metal skin according to the present invention, as shown in FIG. an inner wall 62 and the outer skin 1 having
a stepped portion 63 having a curvature approximately equal to the curvature of the curved shoulder portion of No. 2, and an opening 53 for the neck portion; In the holding member 51 having
Insert the metal outer skin 12 upside down and insert it into the recessed surface 5.
2 Give instructions to the person above. Opening 5 of the holding member 51
An elastic protective collar 54 is attached to the inner surface of the jar 10 so as not to damage the male thread 28 of the jar 10. Next, turn the jar 10 upside down and
7 into the holding member 51, the neck portion 27 of which is attached to the outer skin 1.
It is inserted into the metal shell 12 so that it protrudes from the opening 34 of the shell 12 and its shoulder 24 abuts the inner surface of the shoulder 3 of the shell 12. The diameter of the peripheral wall 31 of the metal outer skin 12 is 10 mm.
However, due to glass manufacturing tolerances, there is a gap between the peripheral wall 31 of the outer skin 12 and the peripheral side wall 22 of the jar 10.
There is no problem even if adhesive 59 is interposed. Jiya 10
A centering piece 56 is provided to center the holding member 51 . The centering piece 56 has a protrusion 57, and the centering piece 5
6 towards the holding member 51, the protrusion 57 approaches the jar 10 and engages the inside of the neck 27 to center the jar 10. The bottom plate 13 is adhered to the bottom of the jar 10 via a pad 14 before or after the jar 10 is inserted into the outer skin 12.

The inner wall 62 of the holding member 51 is made of a metal outer skin 1.
The length is shorter than the length of the peripheral wall portion 31 of No. 2. Therefore, the edge 36 of the free end of the peripheral wall 31 protrudes from the upper end of the holding member 51. In this state, the edge 36 of the free end of the outer skin 12 is pulled onto the edge 43 of the bottom plate 13 by the bending tool 58 and bent so that they are overlapped and engaged. The bending tool 58, as shown in FIG. . This tool 58 is provided with a hanging surface 61 that is a curved surface shaped to bend the free end edge 36 of the peripheral wall portion 31 of the outer skin 12 to a desired extent to cover the bottom plate 13, so that the outer skin 12 has an inner part. This provides a convenient means for preventing the noticeable formation of stress-based lines and wrinkles.

The angle at which the edge 36 of the free end of the skin 12 is bent onto the outer surface of the circumferential wall 22 of the jar 10 and onto the bottom plate 13 is less than this, while one shoulder 32 is approximately a 90 degree curvature. Use a small angle. In the illustrated embodiment, the edge of the free end of the skin 12 is about 20 mm.
It is curved at an angle of 60 degrees to 60 degrees, eliminating the noticeable formation of lines and wrinkles due to internal stress. The shoulder portion 32 of the metal outer skin 12 is curved at a right angle, but this portion is formed by press forming prior to anodizing the metal, so that the occurrence of streaks and wrinkles due to internal stress is avoided. Prevented.

FIG. 5 shows a cross section of a main part of another embodiment of the present invention. In this embodiment, the bottom plate 13'
The edge 43' is connected to the bottom 21' of the jar 10' and the circumferential wall 2.
2' is brought into contact with the jar 10'.

In the above description, the jar 10 has been described as having a cylindrical shape, but the inner container may have a rectangular cross section, an oval cross section, or an irregularly shaped cross section, and may be provided with a metal skin according to the present invention. That's fine.

(F) Effects of the Invention In the container having a metal skin of the present invention, the metal skin covering the inner container is composed of two pieces, the outer skin and the bottom plate, and the metal outer skin covers the peripheral side wall of the inner container. The flange is integrally formed with a flange bent inward so as to cover the shoulder of the inner container at one end of the covering peripheral wall, and is attached to the shoulder and the peripheral side wall of the inner container. Since the edge of the inner container is curved on the metal bottom plate fixed to the bottom of the inner container, the metal outer skin is molded near the shoulder of the container where it is easily visible to the user of the container. The generation of streaks and wrinkles that sometimes occur can be eliminated, and since the metal bottom plate is fixed to the bottom of the inner container and the metal outer skin is curved so as to overlap at least the periphery of the bottom plate, The area other than the opening of the inner container can be covered with a metal skin,
A container suitable for cosmetics can be provided.

In addition, when a neck is formed around the opening of the inner container to form a container to which a cap can be attached, the end of the flange formed at one end of the metal outer skin should reach the neck. , when the cap is placed on the inner container, the surface of the inner container cannot be seen at all.

Furthermore, by bending the periphery of the metal bottom plate close to the inner container side, it is possible to reduce the bending angle of the metal outer skin that is curved toward the bottom of the inner container. By preventing the formation of streaks and wrinkles that are likely to occur in the condensed area, and by forming an annular ridge in the shape of a thread bottom on the bottom plate, the container can sit comfortably.

Furthermore, by fixing the bottom plate to the bottom of the inner container via an elastic pad, the impact transmitted from the bottom plate to the inner container can be alleviated.

The material of the metal skin is aluminum;
Brass, copper, silver, and gold reduce the occurrence of streaks and wrinkles and are suitable as skin materials for cosmetic containers. When using anodized aluminum, it is preferable to use inexpensive and readily available materials. It can be colored in various colors, and a mask can be used during anodizing treatment to create a skin with a label drawn on it.

In the manufacturing method of the present invention, the cylindrical side wall portion and the curved shoulder portion are integrally formed at one end of the cylindrical side wall portion prior to covering the inner container with the outer skin, so that the curved shoulder portion is free from streaks and wrinkles due to internal stress during molding. Afterwards, the inner container is inserted until its shoulder abuts the shoulder of the outer skin, and the other end of the peripheral wall of the outer skin is placed on the metal bottom plate. Since it is bent so that it overlaps at least the periphery of the bottom plate, it is possible to cover the outer circumferential surface of the inner container with the metal outer skin without any gaps, and even if lines or wrinkles occur during bending of the outer skin, , occurs only at the edge of the outer skin bent over the bottom plate.

The manufacturing apparatus of the present invention includes a holding member having a recessed surface shaped to receive a metal outer skin, and a bending tool, and the holding member holds the outer skin in the recessed surface and bends the peripheral wall of the outer skin. The inner container is inserted into the outer shell from the free end, and the bending tool bends the free end of the peripheral wall of the outer shell so as to hang it toward the bottom of the inner container. A container having a metal outer skin according to the invention can be manufactured.

Further, the bending tool of the manufacturing apparatus of the present invention is provided with a curved hanging surface to facilitate bending of the free end of the peripheral wall portion of the outer skin.

(g) Other embodiments of the present invention In addition to the embodiments described in the claims, the present invention can be implemented in the following embodiments.

(1) The container having a metal skin according to any one of claims 1 to 6, wherein the inner container is a wide-mouth glass bottle.

(2) A male thread is formed on the outer periphery of the neck, and a female thread system is formed on the lid to screw with the male thread. container with a metal skin.

(3) Claims 1 to 6, characterized in that the inner container is approximately cylindrical.
A container having a metal skin according to any one of paragraphs.

(4) A portion of the metal bottom plate that forms the outer peripheral edge of the ridge is extended to a higher position than the other surface of the bottom plate. A container with a metal skin.

(5) The above-mentioned device characterized in that the outer peripheral edge of the metal bottom plate is brought into contact with the inner container.
A container having a metal skin as described in (4).

(6) A centering member is provided at a position opposite to the bending tool with respect to the holding member, and is provided with a protrusion that can be inserted into the recessed surface of the holding member. An apparatus for producing a container having a metal skin according to item 9 or 10.

[Brief explanation of the drawing]

Fig. 1 is an exploded view of elements constituting an embodiment of the container of the present invention, Fig. 2 is a perspective view of the embodiment of Fig. 1, and Fig. 3 is a cross-section of the inner container of the embodiment. 4 is a sectional view of the main part of the above embodiment, FIG. 5 is a sectional view of the main part of another embodiment of the container of the present invention, and FIG. 6 is a sectional view of one embodiment of the manufacturing apparatus of the present invention. . In the figure, 10 is a jar, 12 is a metal shell,
31 is the peripheral wall, 36 is the edge of the peripheral wall, 1
3 is a metal bottom plate, 41 is a ridge formed on the bottom plate,
Reference numeral 51 indicates a holding member, and reference numeral 58 indicates a bending tool.

Claims (1)

[Scope of Claims] 1. A bottom, a circumferential wall extending from the bottom, a shoulder extending inward at the top of the circumferential wall to form an internal space, and a shoulder formed on the shoulder to form an internal space. an inner container having an opening communicating with the inner container; a substantially flat metal bottom plate fixed to the bottom of the inner container; a peripheral wall portion that covers a peripheral side wall of the inner container; and an inner container at one end of the peripheral wall portion. a flange portion extending inwardly to cover the shoulder portion leading to the opening of the inner container; and a flange portion extending inwardly so as to cover the shoulder portion leading to the opening of the inner container; 1. A container having a metal skin, characterized in that the container comprises a metal skin formed with a metal skin and a metal skin formed with a metal skin. 2. A neck portion to which a lid can be attached is formed around the shoulder opening of the inner container, and the metal outer skin covers the base of the neck portion covered by the lid when the lid is attached. Claim 1, characterized in that it extends inwardly to reach a portion of
Containers with metal skins as described in Section 1. 3. The metal skin according to claim 1 or 2, wherein the metal bottom plate has a bent edge on its periphery so as to be close to the inner container side. Container with. 4. The metal skin according to claim 1, 2, or 3, characterized in that the bottom surface of the metal bottom plate is provided with an annular bulging ridge in the form of a thread bottom. Container with. 5. According to claim 1, 2, 3, or 4, the metal bottom plate is fixed to the inner container with an elastic pad interposed therebetween. container with a metal skin. 6 The metal outer skin is made of aluminum, brass,
The metal according to claim 1, 2, 3, 4, or 5, characterized in that it is made of copper, silver, gold, or anodized aluminum. container with a skin of 7. Providing an inner container having a bottom, a circumferential side wall substantially perpendicular to the bottom, and a shoulder extending inwardly to an opening at the top of the circumferential wall; and a circumferential wall to cover the inner container. a metal outer skin having a curved shoulder curved inwardly at one end of the peripheral wall portion to cover the shoulder of the inner container, and an opening having a size corresponding to the opening of the inner container; forming the inner container into a metal shell until its shoulder abuts an inwardly curved shoulder of the metal shell; fixing a substantially flat metal bottom plate; and fixing at least the peripheral edge of the bottom plate onto the metal bottom plate fixed to the bottom of the inner container; 1. A method for producing a container having a metal skin, the method comprising: bending the container so as to overlap the surface of the container. 8. Prior to the step of inserting the inner container into the metal outer skin, a step of fixing a substantially flat metal bottom plate to the bottom of the inner container is performed, and after inserting the inner container into the metal outer skin. 8. The method of manufacturing a container having a metal skin according to claim 7, further comprising: bending the other end of the peripheral wall of the metal skin onto a metal bottom plate. 9. A container having a metal outer skin by attaching a metal outer skin to an inner container having a bottom, a peripheral edge substantially perpendicular to the bottom, and a shoulder extending inwardly to the opening at the top of the peripheral wall. In an apparatus for manufacturing a metal outer skin, the external shape includes a peripheral wall, a curved shoulder curved inward at one end of the peripheral wall, and a central opening surrounded by an edge of the curved shoulder. a holding member having a recessed surface formed in an inner wall with a corresponding shape to receive the outer skin; a first member remote from the recessed surface of the holding member;
movable so as to assume an inoperative position and a second operating position in which the metal shell approaches the holding member from the inoperative position and bends an edge of the metal outer skin protruding from the recessed surface of the holding member. A manufacturing device for a container having a metal skin, which comprises a bending tool and a metal skin. 10 A patent characterized in that the bending tool has a hanging surface for bending the edge of the metal outer skin so as to hang onto the inner container on the surface facing the holding member. Claim No. 9
An apparatus for manufacturing a container having a metal skin as described in 2.