Easily manufacturable and disposable airless-type packaging container

Abstract

The present invention relates to an easily manufacturable and disposable airless-type packaging container, comprising: an outer container having an insertion space formed inside and an inlet to the insertion space formed at the upper end; an airless discharge pump which is located above the inlet to the insertion space in a state separated from the outer container, and has a pump cap; and an inner container which is inserted into the insertion space, has a storage space formed inside to store contents, and has a protrusion that is formed at the upper end to protrude upward from the inlet to the insertion space and has an inlet to the storage space, the protrusion being screw-coupled to the pump cap to secure the airless discharge pump, wherein the inner container is made of a material that contracts by negative pressure formed inside by the pumping of the airless discharge pump, and thus can be separated from the outer container together with the airless discharge pump when being disposed of due to contraction.

Description

[Technical Field]

[0001] The present invention relates to an airless-type packaging container, and more specifically, to an easily manufacturable and disposable airless-type packaging container which prevents the inlet side of an inner container and the inlet side of an outer container from being attached to each other even under high temperatures of the blow molding process, thereby maintaining the outer container and the inner container in a separated state, and thus improving the reliability of the simultaneous disposal of an airless-type discharge pump and the inner container.[Background Art]

[0002] In general, in cosmetic containers, an airless outlet pump is installed and used at the inlet of the container as one of the means for discharging a certain amount of the contents stored in the container and using them.

[0003] If an airless outlet pump is not used, there is a problem that cosmetics contained in the container come into contact with the air in the atmosphere while applying makeup with the opening of the container open, and at the same time, foreign substances are continuously introduced to cause the cosmetics to be easily contaminated and deteriorated. Even if the cosmetics are not rapidly contaminated and deteriorated, there is a serious problem that the unique fragrance and smell of the cosmetics as well as moisture easily escape whenever the lid is opened for use, thereby causing the original ingredients of the cosmetics to be lost.

[0004] As a way to solve this problem, a packaging container with an airless discharge pump is used, which is configured so that the inside of the packaging container can be in a vacuum state, and a certain amount of contents can be pumped and discharged without air being supplied to the upper part. In other words, when using cosmetics in the container, if the head of the airless discharge pump is pressed once, an appropriate amount of cosmetics is pumped and discharged to the outside, thereby promoting convenience of use and storage. Such a packaging container equipped with the airless discharge pump is used not only for the aforementioned cosmetics, but also for storage of various liquids, including accommodation of medicines, etc.

[0005] As a technology for a packaging container having a conventional airless discharge pump, an "airless-type packaging container capable of efficient disposal" of Korean Registered Patent No. 10-2009626 has been disclosed, which comprises: an outer container having an opening formed at the upper end and a male screw portion formed on the upper outer circumferential surface; an inner container which is mounted inside the outer container, is configured to store therein contents introduced through an inlet / outlet formed at the upper end with a bent portion to surround the upper end of the outer container, and is made of a material that shrinks due to negative pressure inside; an air inflow passage for allowing air to be introduced between the inner container and the outer container by protruding a plurality of spaced projections provided along the circumference of the outer surface of the inner container or the inner surface of the outer container from the end of the bent portion to the lower portion thereof; an airless discharge pump that is fixed to the upper end of the outer container so that the pump cap is inserted into the inner container by being screwed to the male screw portion; a first rotation-allowing coupling part provided upwardly at the upper end of the inner container; and a second rotation-allowing coupling part which is provided downwardly on the inner side of the pump cap to be fitted into the first rotation-allowing coupling part so as to prevent the pump cap from being detached when the pump cap is screwed to the male screw portion, and is capable of being rotated from the first rotation-allowing coupling part while being fitted into the first rotation-allowing coupling portion.

[0006] Such conventional technology is manufactured using a blow molding process due to the double structural characteristics of the inner container and the outer container, and the opening of the outer container and the inlet / outlet of the inner container are fixed to the pump cap of the airless discharge pump by screwing and fitting, resulting in a structure in which the inlet side of the outer container and the inlet side of the inner container inevitably overlap. As a result, during the blow molding process, the inlet side of the outer container and the inlet side of the inner container become attached due to the high temperature, resulting in a problem in that it is difficult to separate the inner container from the outer container when discarded.[Disclosure] [Technical Problem]

[0007] The present invention is intended to solve the problems of the above-mentioned prior art, and has the following objects: Even when the inner container and the outer container are simultaneously blow-molded by heating and injection of molding air pressure using a molding mold, the portion where the inlet side of the inner container and the inlet side of the outer container are overlapped with each other is minimized, thereby preventing the inlet side of the inner container and the inlet side of the outer container from being attached even at high temperature, and thus the outer container and the inner container are maintained in a separated state. Therefore, the reliability of the simultaneous disposal of the airless-type discharge pump and the inner container is improved, and the recycling efficiency of the outer container is greatly improved, thereby reducing the cost of waste disposal and preventing waste of resources.[Technical Solution]

[0008] In order to solve the above-mentioned problems, according to one aspect of the present invention, there is provided an easily manufacturable and disposable airless-type packaging container comprising: an outer container having an insertion space formed inside and an inlet to the insertion space formed at the upper end; an airless discharge pump which is located above the inlet to the insertion space in a state separated from the outer container, and has a pump cap; and an inner container which is inserted into the insertion space, has a storage space formed inside to store contents, and has a protrusion that is formed at the upper end to protrude upward from the inlet to the insertion space and has an inlet to the storage space, the protrusion being screw-coupled to the pump cap to secure the airless discharge pump, wherein the inner container is made of a material that contracts by negative pressure formed inside by the pumping of the airless discharge pump, and thus can be separated from the outer container together with the airless discharge pump when being disposed of due to contraction.

[0009] The pump cap may have a female screw portion formed on the inner circumferential surface, and the inner container may have a male screw portion formed on the outer circumferential surface of the protrusion for being screw-coupled to the female screw portion.

[0010] The outer container may have an expanded support part formed integrally at the upper end of the inlet so as to support the lower end of the pump cap by expanding the diameter thereof,

[0011] The airless-type packaging container may further comprise a plurality of air inflow passages that are provided along the circumference of any one of the inner surface of the inlet of the outer container and the outer surface of the inlet of the inner container, so that air is introduced between the inner container and the outer container.

[0012] The outer container may be provided with at least one compression inflow hole through which outside air is introduced to relieve negative pressure formed in the insertion space due to the compression of the inner container.[Advantageous Effects]

[0013] According to the easily manufacturable and disposable airless-type packaging container of the present invention, even when the inner container and the outer container are simultaneously blow-molded by heating and injection of molding air pressure using a molding mold, the portion where the inlet side of the inner container and the inlet side of the outer container are overlapped with each other is minimized, thereby preventing the inlet side of the inner container and the inlet side of the outer container from being attached even at high temperature, and thus the outer container and the inner container can be maintained in a separated state. Therefore, the reliability of the simultaneous disposal of the airless-type discharge pump and the inner container can be improved, and the recycling efficiency of the outer container can be greatly improved, thereby reducing the cost of waste disposal and preventing waste of resources.[Description of Drawings]

[0014] FIG. 1 is a cross-sectional view showing an easily manufacturable and disposable airless-type packaging container according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a state in which disposal is required after use of an easily manufacturable and disposable airless-type packaging container according to an embodiment of the present invention. FIG. 3 is a plan view showing an outer container in an easily manufacturable and disposable airless-type packaging container according to an embodiment of the present invention. FIG. 4 is a cross-sectional view showing a state in which an airless discharge pump and an inner container are separated from an easily manufacturable and disposable airless-type packaging container according to an embodiment of the present invention. [Best Modes of the Invention]

[0015] Since the present invention may have various embodiments through various changes, specific embodiments will be described by showing them in the drawings as examples. In addition, the present invention is not limited to these specific embodiments, but should be understood to include all modifications, equivalents, or substitutes included in the technical idea of the present invention.

[0016] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings, and the same reference numerals are assigned to the same or corresponding components regardless of the reference numerals, and redundant descriptions thereof will be omitted.

[0017] FIG. 1 is a cross-sectional view showing an easily manufacturable and disposable airless-type packaging container according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a state in which disposal is required after use of an easily manufacturable and disposable airless-type packaging container according to an embodiment of the present invention.

[0018] Referring to FIGS. 1 and 2, an easily manufacturable and disposable airless-type packaging container 100 according to one embodiment of the present invention may comprise an outer container 110, a discharge pump 120, and an inner container 130.

[0019] The outer container 110 has an insertion space 111 formed inside, and an inlet 112 to the insertion space 111 formed at the upper end. The outer container 110 is exemplified as a cylindrical shape, but is not necessarily limited thereto, and of course, may have various shapes.

[0020] The outer container 110 is separated from a pump cap 121 to be described later (see FIGS. 1, 2, and 4), but has an expanded support part 113 formed integrally at the upper end of the inlet 112 of the insertion space 111 so as to support the lower end of the pump cap 121 by expanding the diameter thereof, wherein the expanded support part 113 can stably support the lower end of the pump cap 121 of the airless discharge pump 120 to which a pressing force is applied downward.

[0021] The outer container 110 may be provided with at least one compression inflow hole 114 through which outside air is introduced to relieve negative pressure formed in the insertion space 111 due to the compression of the inner container 130 inserted into the insertion space 111. Therefore, since the outside air can be introduced into the inside of the outer container 110 through the compression inflow hole 114, the compression of the inner container 130 can be smoothly performed.

[0022] The airless discharge pump 120 is located above the inlet 112 to the insertion space 111 in a state separated from the outer container 110, and has a pump cap 121. The pump cap 121 may have a female screw portion 122 formed on an inner circumferential surface thereof.

[0023] The airless discharge pump 120 is fixed in a state separated from the outer container 110 so that it can be inserted into the inner container 130 by screwing the female screw portion 122 of the pump cap 121 to the inner container 130, and the suction tube 123 is inserted into the inner container 130, so that the contents can be sucked from the inner container 130 through the suction tube 123 and discharged through the discharge port 125 by the pumping force generated by pressing a head 124 at the top.

[0024] The airless discharge pump 120 discharges a certain amount of the liquid contents stored in the inner container 130 while preventing the contents in the inner container 130 from coming into contact with the outside air, and its configuration is known, and it goes without saying that known technologies or existing products can be used.

[0025] The inner container 130 is inserted into the insertion space 111, has a storage space 131 formed inside to store contents, and has a protrusion 133 that is formed at the upper end to protrude upward from the inlet 112 to the insertion space 111 and has an inlet 132 to the storage space 131. The protrusion 133 is screw-coupled to the pump cap 121 to secure the airless discharge pump 120, and the inner container 130 is made of a material that contracts due to the negative pressure formed inside by the pumping of the airless discharge pump 120, and thus can be separated from the outer container 110 together with the airless discharge pump 120 when being disposed of due to contraction (see FIG. 4). Here, the contents may be, for example, cosmetics, but are not limited thereto, and may be various liquids as well as chemicals including medicines or syrups. The inner container 130 does not provide a structure in which the outer surface is fitted with the inner surface of the outer container 110, so that the outer surface is separated from the inner surface of the outer container 110 by contraction (see FIGS. 1, 2, and 4).

[0026] For example, the outer container 110 and the inner container 130 may be manufactured to have a desired volume and shape by preform injection molding or blow molding while being overlapped with each other, but are not limited thereto. As another example, of course, they may be manufactured individually within a structurally acceptable range and then made to be overlapped with each other.

[0027] The inner container 130 may have a male screw portion 134 formed on the outer circumferential surface of the protrusion 133 for being screw-coupled to the female screw portion 122 of the pump cap 121.

[0028] The easily manufacturable and disposable airless-type packaging container 100 according to the present invention may further comprise a plurality of air inflow passages 140 that are provided along the circumference of either the inner surface of the inlet 112 of the outer container 110 or the outer surface of the inlet 132 of the inner container 130 so as to be connected to the outside through a space between the lower end of the pump cap 121 and the expanded support part 113, so that air is introduced between the inner container 130 and the outer container 110. Accordingly, when the outer container 110 and the inner container 130 are assembled and blow molded or when used after manufacturing, the negative pressure formed inside the outer container 110 by the contraction of the inner container 130 is released by the air inflow passages 140, thereby enabling the blow molding and the use by compression of the inner container 130 to be smoothly performed. Meanwhile, as shown in FIGS. 1 and 3 as an example, the air inflow passage 140 is formed inside the inlet 112 of the outer container 110, but is not necessarily limited thereto, and as another example, of course, it may be formed inside the inlet 132 of the inner container 130.

[0029] According to the easily manufacturable and disposable airless-type packaging container according to the present invention, even when the inner container and the outer container are simultaneously blow-molded by heating and injection of molding air pressure using a molding mold, the portion where the inlet side of the inner container and the inlet side of the outer container are overlapped with each other is minimized, thereby preventing the inlet side of the inner container and the inlet side of the outer container from being attached even at high temperature, and thus the outer container and the inner container can be maintained in a separated state.

[0030] In addition, according to the present invention, due to the above-described actions, the reliability of simultaneous disposal of the airless-type discharge pump and the inner container can be improved, and the recycling efficiency of the outer container can be greatly improved, thereby reducing the cost of waste disposal and preventing waste of resources.

[0031] Although the present invention has been described with reference to the attached drawings, various modifications can be made within the scope that does not depart from the technical spirit of the present invention. Accordingly, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the claims and equivalents thereto.[Industrial applicability]

[0032] According to the present invention, even when the inner container and the outer container are simultaneously blow-molded by heating and injection of molding air pressure using a molding mold, the portion where the inlet side of the inner container and the inlet side of the outer container are overlapped with each other is minimized, thereby preventing the inlet side of the inner container and the inlet side of the outer container from being attached even at high temperature, and thus the outer container and the inner container can be maintained in a separated state. Therefore, the reliability of the simultaneous disposal of the airless-type discharge pump and the inner container can be improved, and the effect of greatly improving the recycling efficiency of the outer container is exhibited.

Claims

1. An easily manufacturable and disposable airless-type packaging container comprising: an outer container having an insertion space formed inside and an inlet to the insertion space formed at the upper end; an airless discharge pump which is located above the inlet to the insertion space in a state separated from the outer container, and has a pump cap; and an inner container which is inserted into the insertion space, has a storage space formed inside to store contents, and has a protrusion that is formed at the upper end to protrude upward from the inlet to the insertion space and has an inlet to the storage space, the protrusion being screw-coupled to the pump cap to secure the airless discharge pump, wherein the inner container is made of a material that contracts by negative pressure formed inside by the pumping of the airless discharge pump, and thus can be separated from the outer container together with the airless discharge pump when being disposed of due to contraction, wherein the outer container is separated from the pump cap, but has an expanded support part formed integrally at the upper end of the inlet so as to support the lower end of the pump cap by expanding the diameter thereof, wherein the inner container does not provide a structure in which the outer surface is fitted with the inner surface of the outer container, so that the outer surface is separated from the inner surface of the outer container by contraction, and wherein the airless-type packaging container further comprises a plurality of air inflow passages that are provided along the circumference of either the inner surface of the inlet of the outer container or the outer surface of the inlet of the inner container so as to be connected to the outside through a space between the lower end of the pump cap and the expanded support part, so that air is introduced between the inner container and the outer container.

2. The easily manufacturable and disposable airless-type packaging container according to claim 1, wherein the pump cap has a female screw portion formed on the inner circumferential surface, and the inner container has a male screw portion formed on the outer circumferential surface of the protrusion for being screw-coupled to the female screw portion.

3. The easily manufacturable and disposable airless-type packaging container according to claim 1, wherein the outer container is provided with at least one compression inflow hole through which outside air is introduced to relieve negative pressure formed in the insertion space due to the compression of the inner container.

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