Airless type packaging container that is easy to manufacture and dispose of

Abstract

The present invention relates to an airless type packaging container that is easy to manufacture and dispose of, including: an outer container having an insertion space formed therein and an inlet of the insertion space formed at an upper end; an airless discharge pump located above the inlet of the insertion space while being separated from the outer container and having a pump cap; and an inner container that is inserted into the insertion space, stores contents in a storage space formed inside, has a protrusion formed at an upper end that protrudes upward from the inlet of the insertion space and has an inlet of the storage space, the protrusion being screwed to the pump cap to fix the airless discharge pump, and is made of a material that contracts due to negative pressure formed inside by pumping of the airless discharge pump, and is separated from the outer container together with the airless discharge pump when disposed of due to the contraction.

Description

[Technical field]

[0001] The present invention relates to an airless type packaging container, and more particularly to an airless type packaging container that is easy to manufacture and dispose of, which prevents the inlet side of an inner container and the inlet side of an outer container from adhering to each other even under high temperatures in a blow molding process, thereby maintaining the outer container and the inner container in a separated state, thereby improving the reliability of simultaneous disposal of an airless type discharge pump and an inner container. [Background technology]

[0002] Generally, an airless outlet pump is attached to the inlet of a cosmetic container as a means of discharging a fixed amount of the contents stored in the container for use.

[0003] When an airless discharge pump is not used, the cosmetic in the container is exposed to the waiting air while the opening of the container is open during application, and foreign matter continues to flow in, which causes the cosmetic to be easily contaminated and deteriorated. Even if the cosmetic does not become contaminated or deteriorated quickly, there is a serious problem that the original ingredients of the cosmetic are lost due to the escape of moisture as well as the unique fragrance and smell of the cosmetic every time the lid is opened for use.

[0004] As a method for solving such problems, a packaging container with an airless discharge pump is used, which is configured so that the inside of the packaging container can be kept in a vacuum state, and a fixed amount of the contents can be pumped out without air being supplied to the upper part. In other words, when using the cosmetics in the container, pressing the head of the airless discharge pump once will pump out the appropriate amount of cosmetics, thereby improving convenience of use and storage. Packaging containers equipped with these airless discharge pumps are used to store not only the above-mentioned cosmetics, but also various liquids such as medicines.

[0005] In the past, a technology relating to a packaging container having an airless discharge pump was disclosed in Korean Patent Registration No. 10-2009626 entitled "Efficient disposable airless type packaging container." This technology comprises an outer container having an opening at the top and a male screw on the outer circumferential surface of the upper part; an inner container which is attached to the inside of the outer container and has a folded part surrounding the top of the outer container, in which contents are stored inside through an opening formed at the top and which is made of a material that contracts due to the negative pressure inside; and a number of separating protrusions provided around the periphery of the outer surface of the inner container or the inner surface of the outer container, protruding from the ends of the folded part to the bottom. an air inlet passage that allows air to flow between the inner container and the outer container; an airless discharge pump that is fixed to the upper end of the outer container so as to be inserted into the inner container by screwing a pump cap onto the male threaded portion; a first rotational coupling portion that is provided facing upward at the upper end of the inner container; and a second rotational coupling portion that is provided facing downward inside the pump cap so as to be sandwiched between the first rotational coupling portion to prevent separation when the pump cap is screwed onto the male threaded portion, and that allows the pump cap to rotate from the first rotational coupling portion while being sandwiched between the first rotational coupling portion.

[0006] In the conventional technology, due to the double structure of the inner and outer containers, the containers are manufactured by a blow molding process. However, since 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, the inlet of the outer container and the inlet of the inner container are forced to overlap each other. As a result, the inlet of the outer container and the inlet of the inner container adhere to each other due to high temperatures during the blow molding process, making it difficult to separate the inner container from the outer container when it is disposed of. Summary of the Invention [Problem to be solved by the invention]

[0007] In order to solve the problems associated with the above-mentioned conventional technology, even when the inner container and the outer container are blow molded simultaneously using a molding die by heating and injecting molding air pressure, the overlapping portion between the inlet side of the inner container and the inlet side of the outer container is minimized, thereby preventing the inlet side of the inner container and the inlet side of the outer container from adhering to each other even at high temperatures, and maintaining the separation between the outer container and the inner container. This improves the reliability of the simultaneous disposal of the airless type discharge pump and the inner container, and greatly improves the recycling efficiency of the outer container, thereby reducing waste disposal costs and preventing the waste of resources. [Means for solving the problem]

[0008] In order to solve the above problems, according to one aspect of the present invention, there is provided an airless type packaging container that is easy to manufacture and dispose of, including: an outer container having an insertion space formed therein and an inlet of the insertion space formed at an upper end; an airless discharge pump located above the inlet of the insertion space and separated from the outer container and having a pump cap; and an inner container that is inserted into the insertion space, stores contents in a storage space formed therein, has a protrusion formed at an upper end that protrudes upward from the inlet of the insertion space and has an inlet of the storage space, the protrusion being screwed to the pump cap to fix the airless discharge pump, and is made of a material that contracts due to negative pressure formed inside by pumping of the airless discharge pump, and is separated from the outer container together with the airless discharge pump when disposed of due to the contraction.

[0009] The pump cap may have a female thread formed on an inner circumferential surface, and the internal container may have a male thread formed on an outer circumferential surface of the protruding portion for threadably coupling to the female thread.

[0010] The outer container may be integrally formed with an expanded support portion that expands in diameter at an upper end of the inlet for supporting a lower end of the pump cap.

[0011] The container may further include a number of air inlet passages provided along the periphery of either the inner surface of the inlet of the outer container or the outer surface of the inlet of the inner container, allowing air to flow between the inner container and the outer container.

[0012] The outer container may be formed with at least one compression inlet hole through which outside air flows in so as to eliminate negative pressure formed in the insertion space due to compression of the inner container. Effect of the Invention

[0013] According to the airless-type packaging container which is easy to manufacture and dispose of according to the present invention, even when the inner container and the outer container are simultaneously blow-molded using a molding die by heating and injecting molding air pressure, the overlapping portion between the inlet side of the inner container and the inlet side of the outer container is minimized, so that the inlet side of the inner container and the inlet side of the outer container are prevented from adhering to each other even at high temperatures, and the outer container and the inner container can be maintained in a separated state. This improves the reliability of the airless-type discharge pump and the inner container for simultaneous disposal, and greatly improves the recycling efficiency of the outer container, thereby reducing waste disposal costs and preventing the waste of resources. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a cross-sectional view showing an airless-type packaging container that is easy to manufacture and dispose of according to one embodiment of the present invention. [Diagram 2] 1 is a cross-sectional view showing a state in which an airless-type packaging container that is easy to manufacture and dispose of according to one embodiment of the present invention has been used and needs to be disposed of. [Diagram 3] FIG. 2 is a plan view showing an outer container of an airless-type packaging container that is easy to manufacture and dispose of according to one embodiment of the present invention. [Figure 4] FIG. 2 is a cross-sectional view showing a state in which an airless discharge pump and an inner container are separated in an airless-type packaging container that is easy to manufacture and dispose of according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Since the present invention can have various embodiments through various modifications, specific embodiments will be illustrated and described by way of example in the drawings, and it is understood that the present invention is not limited to such specific embodiments, but includes all modifications, equivalents, and alternatives within the technical spirit of the present invention.

[0016] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings, and the same reference numbers will be used for the same or corresponding components regardless of the drawing numbers, and duplicate descriptions thereof will be omitted.

[0017] FIG. 1 is a cross-sectional view showing an airless-type packaging container that is easy to manufacture and dispose of according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a state in which the airless-type packaging container that is easy to manufacture and dispose of according to one embodiment of the present invention has finished being used and needs to be disposed of.

[0018] 1 and 2, an easy to make and dispose airless type packaging container 100 according to one embodiment of the present invention may include 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 of the insertion space 111 formed at the upper end. Although the outer container 110 is illustrated as having a cylindrical shape as an example, it is not necessarily limited to this, and may of course have various shapes.

[0020] Although the outer container 110 is separated from the pump cap 121 described later (see Figures 1, 2 and 4), it may be integrally formed with an extended support portion 113 that expands in diameter at the upper end of the inlet 112 of the insertion space 111 and supports the lower end of the pump cap 121. These extended support portions 113 can stably support the lower end of the pump cap 121 of the airless discharge pump 120, to which a downward pressure force acts.

[0021] The outer container 110 may be formed with at least one or more compression inlet holes 114 through which outside air flows in, so as to eliminate negative pressure formed in the insertion space 111 due to compression of the inner container 130 inserted into the insertion space 111. Thus, the compression inlet holes 114 allow outside air to flow into the inside of the outer container 110, so that compression of the inner container 130 can be smoothly performed.

[0022] The airless discharge pump 120 is located above the inlet 112 of 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 its inner circumferential surface.

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

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

[0025] The inner container 130 is inserted into the insertion space 111, and the contents are stored in the storage space 131 formed inside. A protruding portion 133 having an inlet 132 of the storage space 131 is formed at the upper end of the inner container 130, which protrudes upward from the inlet 112 of the insertion space 111 and is formed at the upper end of the inner container 130. The protruding portion 133 is screwed to the pump cap 121 to fix the airless discharge pump 120. The inner container 130 is made of a material that contracts due to negative pressure formed inside by pumping of the airless discharge pump 120, and is separated from the outer container 110 together with the airless discharge pump 120 when discarded (see FIG. 4). Here, the contents are exemplified as cosmetics, but are not limited thereto, and may include not only chemical agents but also various liquids including medicines and syrups. The inner container 130 does not provide a structure for fitting and connecting the outer surface to the inner surface of the outer container 110, and is separated from the inner surface of the outer container 110 due to contraction (see FIGS. 1, 2, and 4).

[0026] As an example, the outer container 110 and the inner container 130 may be manufactured to have the desired volume and shape by freeform injection molding or blow molding while overlapping each other, but this is not limited to this. As another example, the outer container 110 and the inner container 130 may be manufactured separately within a structurally acceptable range and then overlapped with each other.

[0027] Inner container 130 may have male threads 134 formed on the outer circumferential surface of protrusion 133 for threadedly coupling with female threads 122 of pump cap 121 .

[0028] The airless-type packaging container 100 according to the present invention, which is easy to manufacture and dispose of, may further include a number of air inflow passages 140 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 gap between the lower end of the pump cap 121 and the expandable support part 113, and allowing air to flow between the inner container 130 and the outer container 110. Thus, after the outer container 110 and the inner container 130 are assembled, during a blow molding process or when used after completion of manufacture, negative pressure formed in the outer container 110 due to contraction of the inner container 130 can be released by the air inflow passages 140, so that blow molding and use due to compression of the inner container 130 can be smoothly performed. On the other hand, as shown in Figures 1 and 3, the air inlet passage 140 is formed inside the inlet 112 of the outer container 110 as an example, but this is not necessarily limited to this, and as another example, it may of course be formed inside the inlet 132 of the inner container 130.

[0029] According to the airless-type packaging container according to the present invention, which is easy to manufacture and dispose of, even when the inner container and the outer container are simultaneously blow-molded using a molding die by heating and injecting molding air pressure, the overlapping portion between the inlet side of the inner container and the inlet side of the outer container is minimized, thereby preventing the inlet side of the inner container and the inlet side of the outer container from adhering to each other even at high temperatures, thereby maintaining the separation between the outer container and the inner container.

[0030] Furthermore, according to the present invention, the above-mentioned action can improve the reliability of simultaneous disposal of the airless type discharge pump and the inner container, and by significantly improving the recycling efficiency of the outer container, it is possible to reduce waste disposal costs and prevent the waste of resources.

[0031] Although the present invention has been described with reference to the accompanying drawings, various modifications are possible within the scope of the technical concept of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiment, but should be defined by the claims and equivalents thereof. [Industrial Applicability]

[0032] According to the present invention, even when the inner container and the outer container are blow molded simultaneously by heating and injecting molding air pressure using a molding die, the overlapping portion between the inlet side of the inner container and the inlet side of the outer container is minimized, thereby preventing the inlet side of the inner container and the inlet side of the outer container from adhering to each other even at high temperatures, and maintaining the separation between the outer container and the inner container. This improves the reliability of the simultaneous disposal of the airless type discharge pump and the inner container, and has the effect of greatly improving the recycling efficiency of the outer container.

Claims

1. an outer container having an insertion space formed therein and an inlet of the insertion space formed at an upper end; an airless discharge pump having a pump cap located above the inlet of the insertion space and separated from the outer container; and an inner container that is inserted into the insertion space, has a storage space formed therein for storing contents, has a protruding portion at its upper end protruding upward from the inlet of the insertion space and having an inlet of the storage space, and fixes the airless discharge pump by being screwed to the pump cap; and is made of a material that contracts due to negative pressure formed inside by pumping of the airless discharge pump, so that when it is disposed of, the contraction allows the inner container to be separated from the outer container together with the airless discharge pump; The outer container comprises: An expansion support portion is integrally formed with the pump cap, the expansion support portion being separated from the pump cap and expanding in diameter at the upper end of the inlet to support the lower end of the pump cap; The inner container comprises: The outer surface does not provide a structure for fitting and joining with the inner surface of the outer container, so that the outer surface is separated from the inner surface of the outer container by shrinkage; The pump cap further includes a plurality of air inlet passages provided along the circumference of either an inner surface of the inlet of the outer container or an outer surface of the inlet of the inner container, the air inlet passages being connected to the outside via a gap between the lower end of the pump cap and the expansion support portion, and allowing air to flow between the inner container and the outer container. An airless type packaging container that is easy to manufacture and dispose of.

2. The pump cap includes: A female screw is formed on the inner circumferential surface. The inner container comprises: A male screw portion for screwing to the female screw portion is formed on the outer circumferential surface of the protruding portion.

2. The airless-type packaging container according to claim 1, which is easy to manufacture and dispose of.

3. The outer container comprises: At least one compression inlet hole through which outside air flows is formed so as to eliminate the negative pressure formed in the insertion space by the compression of the internal container.

2. The airless-type packaging container according to claim 1, which is easy to manufacture and dispose of.

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