JP2021160774A - container - Google Patents

Abstract

To realize a structure capable of firmly fitting with a receiving part of a body member made of as resin or the like, relating to a paper-made cap, so as to replace an over-cap with one made of paper excellent in texture and touch feeling, relating to a bottle container especially for a cosmetic.SOLUTION: A cap 14 is for covering, for example, a pump unit 2 of a pump bottle, and contains a cylindrical part 15 and a lid plate 16 provided at an upper end part thereof. While an annular projection 19 is formed by turning back at a lower end of the cylindrical part 15, meanwhile an annular recessed part 20 which the annular projection 19 is firmly fitted with is formed at a discharge port 4 of a bottle body 1. Since the annular projection 19 has a hollow structure, even when the cap 14 has a processing error or the bottle body 1a has a molding, the error is absorbed to tightly and lightly fitting.SELECTED DRAWING: Figure 2

Description

The present invention relates to a container provided with a main body member made of synthetic resin, glass or metal plate, and a paper cap. It should be noted that "made of paper" means that it is mainly made of paper, and does not exclude composite products with other kinds of materials such as those on which a resin film is laminated.

Various containers are used to wrap various products. There are various materials for the container, but synthetic resin is often used from the viewpoint of molding freedom and waterproofness. However, since synthetic resins are made from petroleum, problems with environmental impact such as post-disposal treatment have been pointed out for some time.

On the other hand, paper has been used as a material for containers for a long time, but since paper is made from plants, which are recycled resources, it has the advantage that its environmental load is significantly lower than that of synthetic resin. In addition, paper has an advantage that it has a soft texture and a warm touch, or that it is easy to print. Therefore, it has been proposed to replace the material of the container with paper from synthetic resin.

As an example, in Patent Documents 1 to 4, the lid (cap) having the cylinder portion and the top plate is made of paper, and an annular protrusion or an annular groove that fits tightly into the opening of the container body is formed in the cylinder portion. Is disclosed.

CD-ROM of Jitsukaihei 7-23587 Japanese Unexamined Patent Publication No. 63-3244 Special Table 2012-513940 Korean Patent Publication No. 2003-64199

In Patent Documents 1, 2 and 4, since the engaging portion of the cap is formed by pushing and bending the tubular portion, annular protrusions and annular grooves appear on the outer periphery of the tubular portion, and therefore, in terms of aesthetics, It can be said that there is a problem. In particular, it can be said that it is difficult to apply it to cosmetic containers that emphasize appearance. The form of FIG. 3 in Patent Document 3 is the same, and it is hard to say that the appearance is good because a step appears on the outer peripheral surface of the tubular portion.

It can be said that there is no problem in appearance in the form of FIG. 4 in Patent Document 3 because there are no protrusions or dents on the outer periphery, but a skirt portion is provided on the lid plate and the lower end of the cylinder portion is folded back inward. Since the skirt is held from the inside, not only is the structure complicated, but it can only be applied to jar containers, and it is understood that it is not versatile.

The present invention has been made against the background of such a situation, and is intended to realize a form of a paper cap having a simple structure and excellent cosmetics and versatility.

The invention of the present application relates to a container provided with a main body member made of synthetic resin, glass or metal plate and a paper cap attached to the main body member, and the invention of claim 1 relates to the container.
"The cap has a cylinder portion and a lid plate provided at one end thereof, and the outer peripheral surface of the cylinder portion is formed on a smooth surface having no protrusions or recesses, and the cylinder portion has. On the inner peripheral surface, an inwardly engaging portion that fits tightly to the receiving portion formed on the main body member is formed by folding back the tubular portion, attaching the inner tubular body, or both. "
It is configured as.

In the present invention, the main body member that constitutes a container in combination with a cap simply means a member to which a cap is attached, and may be a container main body such as a bottle, or a note attached to a bottle or the like. It may be a protruding member. Further, as can be understood from the example of FIG. 5, the main body member may be a lid. Therefore, the cap is not necessarily limited to the one intended for the sealing function, and includes a cap having a protective function and a cosmetic function without having a sealing function.

The invention of the present application can be developed in various ways. As an example, in the invention of claim 2,
"The engaging portion is an annular projection in which the other end of the tubular portion is folded inward, and has a hollow structure having an annular space inside."
It is configured as.

The invention of claim 3 is a concrete example of claim 2.
"The main body member is a bottle whose discharge port rises from the shoulder portion, and the discharge port has a structure in which the outer diameter is different between the large diameter portion located below the large diameter portion and the small diameter portion located above the large diameter portion. A push-type pump unit or spoid or lid is attached to the small diameter portion, and the large diameter portion is a shallow groove-shaped receiving portion recessed in the axial direction.
At the lower end of the tubular portion of the cap, the annular protrusion that fits snugly into the receiving portion is formed. "
It is configured as.

The invention of claim 4 is a development example of the invention of claim 1 or 2.
"While the main body member is a jar container main body having an outward annular protrusion on the opening edge at the upper end,
The cap is formed by folding back the lid plate that overlaps the upper surface of the jar container body, the tubular portion that surrounds the annular protrusion of the jar container body, and the lower end of the tubular portion as the engaging portion. It has an annular protrusion. "
It is configured as.

In each invention of the present application, the outer peripheral surface of the cap is a smooth surface without protrusions or dents, and thus is excellent in cosmeticity. Therefore, it can be used for cosmetic caps without any problem. Since the engaging portion for attaching to the main body member of the container is formed by folding back the tubular portion or attaching the inner ring, the structure is simple and the engaging portion can be formed reasonably, and the height of the engaging portion is high. It is easy to select the position. Therefore, it has a wide range of applications and is highly versatile.

As mentioned above, the paper cap has a texture and feel that cannot be realized with synthetic resin, but it is inferior to synthetic resin in terms of processing accuracy (dimensional accuracy) because it has a fibrous structure. .. However, as in claim 2, when the annular protrusion as the engaging portion is formed in a hollow structure, the annular protrusion is easily deformed so as to change its inner diameter, so that the cap itself has a processing error or the main body member has a dimensional error. Even if there is, it is possible to absorb the error and maintain a firm (or tight) mating state.

Therefore, it is possible to prevent the phenomenon that the fitting with the main body member is too hard or too loose, and to attach / detach with a stable fitting strength. In addition, since stress concentration can be suppressed during bending, it is possible to prevent tearing during bending and improve yield.

The present invention can be applied to various types of containers including a main body member made of synthetic resin or glass or metal plate and a paper cap, but when the annular protrusion is formed by folding back as in claim 3, it is high. An annular protrusion can be formed at the lower end of the metal by increasing the length. Therefore, it can be applied to a bottle having a discharge portion having a height higher than the outer diameter, such as a push-type pump bottle or a dropper bottle, without any problem. Further, since the annular protrusion of the cap fits in the lower part of the discharge port in the bottle, the annular protrusion of the cap fits in the receiving portion at the final stage of fitting into the discharge port. Therefore, a large load is not applied to the annular protrusion, and even if the cap is repeatedly attached and detached, the annular protrusion can be prevented from being settled. Therefore, it is also excellent in durability.

The present invention can also be applied to a jar container (or a wide-mouthed can container) as in claim 4. Also in this case, since the annular protrusion is formed by folding back the tubular portion, the structure is simple and the processing is easy. Therefore, it is excellent in practicality.

The lid plate can be made continuous integrally with the tubular portion, but when the annular protrusions are formed by folding back at both ends of the tubular portion as in the embodiment, the same processing machine is used to form the annular protrusions at both ends. Therefore, the processing process can be simplified and the cost can be suppressed. The lid plate may be simply fitted tightly to the tubular portion, or may be joined to the tubular portion or the annular protrusion with an adhesive. This point is the same in other inventions and each embodiment.

When the inner ring is used as in the embodiment, an annular groove can be formed on the inner surface of the cylinder portion as an engaging portion, so that it can be applied even when an annular protrusion is formed on the main body member of the container. Therefore, it is excellent in flexibility.

A view showing the first embodiment, (A) is a front view, (B) is a separated front view, (C) is a perspective view of the cap viewed from above, and (D) is a perspective view of the cap viewed from below. (D) is a partially enlarged cross-sectional view of the tubular portion. It is a longitudinal front view of the first embodiment. (A) is a vertical sectional front view of the second embodiment, (B) is a vertical sectional front view of the second embodiment, and (C) is a partially broken partial front view of the fourth embodiment. (A) is a front view of a partially broken portion of the fifth embodiment, (B) is a front view of a partially broken portion of the sixth embodiment, (C) is a sectional view taken along line CC of (A) and (B). , (D) are partially developed views showing the folded state in (A) and (B). (A) is a vertical sectional front view of the seventh embodiment, and (B) is a separated sectional view of a lid and a cap.

(1). Basic structure of the container according to the first embodiment Next, the embodiment of the present invention will be described with reference to the drawings. First, the first embodiment shown in FIGS. 1 and 2 will be described. This embodiment is applied to a pump bottle for packaging a liquid cosmetic such as a lotion. The pump bottle of the present embodiment is, for example, a small product containing 20 to 30 cc, and includes a bottle body 1 and a pump unit 2 attached to the bottle body 1. The present invention can be applied not only to pump bottles, but also to bottles with spoids, bottles with hinge cap type lids, bottles sealed with a lid (including a stopper) such as a screw lid, and the like. When applied to a pump bottle, its capacity can be set arbitrarily (eg, 3 to 500 cc).

The bottle body 1 is a blow-molded product (including an injection blow-molded product) made of a synthetic resin, and is formed in a circular shape. A shoulder portion 3 is formed on the upper portion of the bottle body 1, and as shown in FIG. 2, a discharge port 4 is projected upward from the shoulder portion 3. The discharge port 4 is composed of a large diameter portion 4a constituting the lower portion thereof and a small diameter portion 4b continuous with the upper end thereof, and a male screw 5 is formed on the outer peripheral surface of the small diameter portion 4b.

The pump unit 2 includes a pump base 6 screwed into the small diameter portion 4b of the discharge port 4, a pusher 7 mounted on the pump base 6 so as to be able to move up and down from above, and a fixed straw 8 mounted on the pump base 6 from below. The pusher 7 has a nozzle 9 opened sideways. The substantially upper half portion of the pump base 6 is formed to have a diameter slightly smaller than that of the lower half portion screwed into the discharge port 4, and is a protruding portion 6a protruding upward from the discharge port 4, and is formed in the protruding portion 6a. The skirt portion 11 provided in the pusher 7 is fitted into the recess 10 of the upward opening provided.

Further, a downward tubular midfoot portion 12 is formed in the protruding portion 6a of the pump base 6, and a fixed straw 8 is fitted to the tubular midfoot portion 12 from the outside, while the tubular midfoot portion 12 is fitted. A movable straw 13 provided in the pusher 7 is slidably inserted into the inside of the pusher 7. Since it is not directly related to the present invention, the description by illustration is omitted, but a spring, a valve ball, or the like is arranged inside the fixed straw 8, and when the pusher 7 is pushed down against the spring, the contents Discharges from the nozzle 9.

(2). Cap The pump unit 2 is entirely covered with a paper cap (overcap) 14. The cap 14 of the present embodiment is composed of a tubular portion 15 and a disk-shaped lid plate 16 built in the upper end portion thereof, and an inwardly folded upward folded portion 18 is formed at the upper end (one end) of the tubular portion 15. The lid plate 16 is fitted into the tubular portion 15 from below (the other end), and the lid plate 16 is applied to the upper folded portion 18. In the embodiment, the cap 14 has an elongated shape in which the height (length) is nearly twice the outer diameter because it is applied to the pump container, but the ratio of the outer diameter to the height depends on the type of container. It can be set arbitrarily according to the situation (for example, it can be set to 1: 1 or 1: 1.5, 2: 1 or the like). The same applies to the type shown in FIG. 3 (A).

The lid plate 16 may be configured so as to be forcibly fitted into the tubular portion 15 and applied to the upper folded portion 18, or the upper folded portion 18 or the tubular portion 15 may be provided with an adhesive such as a pressure sensitive adhesive or a hot melt adhesive. May be joined to. The folded-back portion can also be called a curl portion.

An annular protrusion 19 as an example of the engaging portion is formed at the lower end (the other end) of the tubular portion 15 by folding the lower end portion inward. The annular protrusion 19 has the same structure as the upper folded portion 18, and the annular protrusion 19 and the upper folded portion 18 are folded back using the same device. The corners of both the annular protrusion 19 and the upper folded portion 18 are slightly rounded.

The annular protrusion 19 is tightly fitted to the large diameter portion 4a of the discharge port 4 in the bottle body 1, and the large diameter portion 4b of the discharge port 4 is formed with an annular recess 20 into which the annular protrusion 19 is fitted. ing. That is, the large diameter portion 4a of the discharge port 4 is formed with an annular recess 20 having a shallow depth by setting the upper end portion thereof to have a slightly large diameter. Therefore, in the present embodiment, the bottle main body 1 is the main body member according to the claim. The depth of the annular recess 20 can be set to, for example, about 0.1 to 1.5 mm.

As can be understood from FIG. 1 (A), the cylinder portion 15 is a base material (core tube) obtained by cutting a paper cylinder formed by joining single-layer or laminated paper while spirally winding it to a predetermined length. The number is 17, and the cosmetic cover paper 21 is adhered to the outer surface of the base material 17. The front cover 21 is a rectangular paper wrapped in a posture in which its longitudinal side edge is parallel to the axis, and the vertically long one end edge and the other end edge overlap each other.

The base material 17 is preferably paper that is strong and has excellent water resistance. For the lid plate 16, coated paper having a water-repellent layer, non-cellulosic stone paper, or the like can be used. Needless to say, the outer surfaces of the cover paper 21 and the lid plate 16 are printed. Printing may be performed in advance, or may be performed by a screen printing method, an inkjet printing method, or the like after forming the cap 14. It is also possible to print directly on the outer surface of the tubular portion 15 without using the cover paper 21. The lid plate 16 can also be made of a transparent or translucent resin plate.

As shown by the alternate long and short dash line in FIG. 1 (E), it is also possible to laminate a protective layer 22 such as a resin film on the inner surface of the tubular portion 15. When high water resistance is required, a protective layer such as a resin film can be laminated on the outer surface of the tubular portion 15 and both the front and back surfaces of the lid plate 16.

The annular protrusion 19 of the cap 14 fits into the annular recess 20 of the bottle body 1 against its elasticity, but the annular protrusion 19 is slightly elastically deformed while being fitted to the annular recess 20. Therefore, the annular protrusion 19 elastically holds the annular recess 20 of the bottle body 1. Further, the annular protrusion 19 (also the upper folded portion 18) has a vertical width that is twice or more the inwardly protruding dimension. )
As described above, since the annular protrusion 19 having a certain vertical width elastically holds the annular recess 20 of the bottle body 1, the axis of the cap 14 almost coincides with the axis of the bottle body 1. It has excellent posture stability so that it can be held elastically.

Further, the annular protrusion 19 (also the upper folded portion 18) is formed so as to have an annular space 23 between the annular protrusion 19 and the inner surface of the tubular portion 15. Therefore, the annular protrusion 19 has a hollow structure. Therefore, it is allowed that the inner peripheral portion of the annular protrusion 19 is dented and deformed against the elasticity.

Therefore, even if the annular protrusion 19 has a processing error or the bottle body 1 has a molding error due to molding shrinkage or the like, the error can be set by setting the dimensions in anticipation of the processing error and the molding error. The annular protrusion 19 can be tightly fitted into the annular recess 20 by absorbing the above. That is, the cap 14 can be fitted and detached into the annular recess 20 exactly and lightly without causing the phenomenon that the cap 14 is too hard or too loose with respect to the annular recess 20 of the bottle body 1. In this respect, it is a device that utilizes the characteristic of paper that it is easily deformed.

As shown by the alternate long and short dash line in FIG. 2, an auxiliary cylinder 24 having an inwardly folded portion 24a formed at the lower end thereof is mounted inside the tubular portion 15, and the folded portion 24a of the auxiliary cylinder 24 is attached to the pump base 6 It is also possible to abut or bring it into close contact with the large diameter portion of the. In this case, even if the height (length) of the cap 14 is long, it is possible to firmly prevent the cap 14 from falling (running). Depending on the outer diameter of the pump base 6, the folded-back portion 24a of the auxiliary cylinder body 24 may be brought into close contact with the cylinder portion 15 instead of having a hollow structure. Further, the folded-back portion 24a can be provided intermittently instead of being annular.

The cap 14 is basically made of paper even if a resin film is laminated, and the texture of the paper appears on the outer surface (at the point where the upper folded portion 18 and the annular protrusion 19 are rounded. However, the texture of the paper appears.) Paper is also characterized by its soft texture. Therefore, it is possible to bring out warmth and softness that could not be realized with a conventional resin cap. As a result, it can be said that high commercial value can be imparted.

In addition, wood, which is a renewable resource, is used as the raw material, and after disposal, when incinerated, the amount of heat is lower than that of resin, and it is possible to return it to the soil without incineration. Therefore, the environmental load is much lower than that of resin, and it can be said that it is a product that meets the demands of the times.

(3). Embodiments 2 to 6 Next, the following embodiments of FIG. 2 will be described. In the second embodiment shown in FIG. 3A, the lid plate 16 is formed in an appearance integrated with the upper end (one end) of the tubular portion 15 by bending or adhesive, and the lower end (other end) of the tubular portion 15. In addition, the annular protrusion 19 is formed by folding back. In this embodiment, the appearance is simple, which is useful as one of the assortment.

In the third embodiment shown in FIG. 3B, the inner ring 25 is fitted inside the tubular portion 15, and the annular protrusion 19 is formed by folding back at the lower end of the inner ring 25. In this example, the annular protrusion 19 can be arranged at an arbitrary height position of the tubular portion 15. The form shown in FIG. 3B can also be adopted depending on the mode of the main body member.

As shown by the alternate long and short dash line in FIG. 3B, it is also possible to form an inwardly folded portion 26 at the lower end of the tubular portion 15. Although the folded-back portion 26 is superposed on the inner surface of the tubular portion 15, it can be formed into a hollow structure similar to the upper folded-back portion 18 and the annular protrusion 19 described above.

The fourth embodiment shown in FIG. 3C is a modification of the first embodiment, and the annular protrusion 19 of the cap 14 is formed in a series over the entire circumference, while the discharge port 4 in the bottle body 1 is formed. By forming the ridges 20a intermittently in the circumferential direction in the large-diameter portion 4a of the above, the annular recess 20 is intermittently formed in the circumferential direction. When the annular recess 20 is formed discontinuously in this way, the annular protrusion 19 is easily deformed, so that the absorbability of processing errors can be further improved.

In this embodiment, the ridges 20a (and the annular recesses 20) are formed at four locations at equal intervals in the circumferential direction, but the number of these can be set arbitrarily. Instead of forming the annular recess 20 intermittently, it is also possible to configure the engaging portion of the cap 14 in a form in which a plurality of ridges are intermittently formed in the circumferential direction.

In FIG. 4, it is applied to a neck-in type metal can 28 in which a winding tightening portion 27 is projected outward from a reduced diameter neck portion. Therefore, in the present embodiment, the metal can 28 is the main body member according to the claim, and the winding tightening portion 27 is an annular protrusion.

In the fifth embodiment shown in FIG. 4A, the upper folded portion 18 is formed on the tubular portion 15 and the lid plate 16 is brought into contact with the lower end thereof, while the lower end of the tubular portion 15 is formed. An annular protrusion (engagement protrusion) 19 that rides over the winding tightening portion 27 is formed by folding back inward. On the other hand, in the sixth embodiment shown in FIG. 4 (B), the cylinder portion 15 does not have the upper folded portion 18, and the lid plate 16 is bent and formed or adhered to the cylinder portion 15, and the cylinder portion 15 is formed by a cover paper (not shown). The entire outer surface of the portion 15 and the lid plate 16 is covered.

In these fifth and sixth embodiments, as shown in FIGS. 4 (C) and 4 (D), a large number of trapezoidal annular projections 19 are formed in a state of being arranged in the circumferential direction, and each annular projection 19 has a tubular portion 15. It is adhered to the inner peripheral surface of. Since the annular protrusions 19 are separated from each other, the tubular portion 15 can be easily deformed, and the cap 14 can be easily fitted and removed from the metal can 28. The metal can 28 can be sealed by, for example, welding a film such as an aluminum laminated film to the upper end surface of the metal can 28. The container may be a quadrangle or the like. The jar container shown in FIG. 5 can be applied to the form of FIG. 4, and the metal can 28 can also be called a jar container.

(4). Seventh Embodiment In the seventh embodiment shown in FIG. 5, it is applied to a jar container (wide-mouthed container) which is often used for packaging cosmetic creams. That is, the jar container includes a jar container main body 29 which is an injection molded product and a screw lid 30 which is screwed to the mouth portion 29a of the jar container main body 29, and the screw lid 30 is covered with a paper cap 14. It has been.

The cap 14 is in close contact with the outer surface (top surface, outer peripheral surface) of the screw lid 32, and an inward annular protrusion 19 is formed by folding back at the lower end of the tubular portion 15, while the cap 14 is in close contact with the outer peripheral surface of the screw lid 32. As an example of the receiving portion according to the claim, an annular engaging groove 33 into which the annular protrusion 19 is fitted is formed at the corner portion connected to the lower end surface. In this embodiment, the cap 14 is unfolded against its elasticity and then fitted to the screw lid 32.

Since the cap 14 is tightly fitted to the screw lid 32, when a person grips the cap 14, a large frictional resistance is generated between the inner peripheral surface of the cap 14 and the outer peripheral surface of the screw lid 32. Therefore, it is considered that the cap 14 does not spin idle when opening and closing even if the cap 14 is simply fitted to the screw lid 32. However, in order to prevent the cap 14 from spinning, for example, at least one of the inner surfaces of the cap 14 is used. The portion may be adhered to the screw lid 32 with an adhesive (from the viewpoint of ease of fitting, it is preferable to adhere a part or all of the lid plate 16).

In this embodiment, the cap 14 functions as a decorative cover for the screw lid 32, but the cap 14 of the present invention can also be used only for such a cosmetic function or a protective function. Alternatively, or in addition to attaching the cap 14 to the screw lid 32, the jar container body 29 can be covered from below by the paper cap 14'as shown by the alternate long and short dash line. In this case, an inwardly annular protrusion may be formed on the upper end edge of the paper cap 14', and an engaging groove may be formed on the shoulder portion 3 of the jar container body 29.

Although the embodiments of the present invention have been described above, the present invention can be embodied in various ways. For example, in addition to the illustrated pump bottle, bottle with spoid, and screw lid sealed bottle, it can be applied to a squeeze bottle that pressurizes the bottle body and ejects the contents from a nozzle. Further, it can also be used for a drawing bottle, a fixed quantity taking-out bottle, etc. used for packaging powders such as powder facial cleansers.

The invention of the present application can be embodied in a container. Therefore, it can be used industrially.

1 Bottle body that composes the main body member 2 Pump unit 3 Shoulder 4 Discharge port 6 Pump base 7 Pusher 9 Nozzle 14, 14'Cap 15 Cylinder 16 Lid plate 17 Base material (core tube)
18 Upper folded part 19 An annular protrusion as an example of an engaging part (lower folded part)
20 Ring recess as an example of receiving part 23 Ring space 24 Auxiliary cylinder 25 Inner ring 27 Winding part as an example of outward ring protrusion

Claims (4)

A container provided with a main body member made of synthetic resin, glass or metal plate, and a paper cap attached to the main body member.
The cap has a cylinder portion and a lid plate provided at one end thereof, and the outer peripheral surface of the cylinder portion is formed on a smooth surface having no protrusions or recesses, and the inside of the cylinder portion. On the peripheral surface, an inwardly engaging portion that fits tightly to the receiving portion formed on the main body member is formed by folding back the tubular portion, attaching the inner tubular body, or both.
container. The engaging portion is an annular projection in which the other end of the tubular portion is folded inward, and has a hollow structure having an annular space inside.
The container according to claim 1. The main body member is a bottle in which a discharge port rises from a shoulder portion, and the discharge port has a structure having a different outer diameter between a large-diameter portion located below the large-diameter portion and a small-diameter portion located above the large-diameter portion. A push-type pump unit or spoid or lid is attached to the small diameter portion, and the large diameter portion is a shallow groove-shaped receiving portion recessed in the axial direction, while the tubular portion in the cap. At the lower end, the annular protrusion that fits snugly into the receiving portion is formed.
The container according to claim 2. The main body member is a jar container main body having an outward annular protrusion on the opening edge of the upper end, while the cap has the lid plate overlapping the upper surface of the jar container main body and the annular protrusion of the jar container main body. It is provided with the tubular portion surrounding the cylinder portion and an inwardly annular protrusion formed by folding back at the lower end of the tubular portion as the engaging portion.
The container according to claim 1 or 2.

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