KR102479435B1 - Manufacturing method of inner container containing film-type container - Google Patents

Abstract

According to one embodiment of the present invention, a method for manufacturing an inner container including a film container is provided. The manufacturing method comprises the steps of forming a first raw film to manufacture a jig (jig) including a receiving portion corresponding to the shape of the film container on the inside; manufacturing the film container by combining the second raw film molded into the shape of the film container with the jig through the receiving part and integrally cutting the rim; and inserting the film container into the container body, and manufacturing the container by bonding the film container and the edge of the container body.

Description

Manufacturing method of inner container including film container {MANUFACTURING METHOD OF INNER CONTAINER CONTAINING FILM-TYPE CONTAINER}

The present invention relates to a method for manufacturing an internal container including a film container, and more specifically, to a method for manufacturing an internal container including a flexible film container capable of shrinking according to discharge of contents.

In general, a pump-type container is used by pressing a button of a container storing liquid contents to eject a predetermined amount of the contents, and is applied to various containers for storing cosmetics, perfumes, medicines, or food.

In this regard, Figure 12 shows a conventional pumped vessel. Referring to FIG. 12, a conventional pump-type container has a container body 1210 in which liquid contents are stored, a discharge pump 1220 coupled to the inlet of the container body 1210, and a discharge pump 1220 coupled to an upper portion of the discharge pump 1220. A tube 1240 extending from the button 1230 and the discharge pump 1220 to the inside of the container body 1210 may be included. When the user presses the button 1230, the discharge pump 1220 is operated to suck the contents stored in the container body 1210 upward through the tube 1240, and the contents sucked into the discharge port formed in the button 1230. It is configured to emit.

However, such a conventional pump-type container has a problem in that a large amount of content is always left in the container body 1210 because there are many contents stored in a space where the tube 1240 does not reach.

In order to solve this problem, an airless type container has been introduced in which a piston is installed at the inner lower end of the container body, and the piston rises according to the change in internal pressure due to the discharge of the contents to push the contents upward. .

Such a container also has limitations in that it is difficult to apply to a compact container with a low height due to the need for a piston installation space.

The present invention is to solve the above problems, and an object of the present invention is to provide a method for manufacturing an inner container including a flexible film container capable of shrinking according to the discharge of the contents.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

According to one embodiment of the present invention, a method for manufacturing an inner container including a film container is provided. The manufacturing method comprises the steps of forming a first raw film to manufacture a jig (jig) including a receiving portion corresponding to the shape of the film container on the inside; manufacturing the film container by combining the second raw film molded into the shape of the film container with the jig through the receiving part and integrally cutting the rim; and inserting the film container into the container body, and manufacturing the container by bonding the film container and the edge of the container body.

Preferably, the manufacturing of the jig may include heating and softening the first raw film; vacuum forming the softened first raw film into the shape of the jig; and cutting an edge of the vacuum-formed first raw film.

Preferably, the manufacturing of the jig may further include creating a through hole in at least one region of the accommodating part formed in the vacuum-formed first raw film.

Also, preferably, the heating and softening of the first raw film may be performed by non-contact heating the first raw film at 270 to 300 °C for 12 to 18 seconds.

Also, preferably, the thickness of the first raw film may be 0.2 to 0.4 mm.

Also, preferably, the manufacturing of the film container may include heating and softening the second raw film; vacuum forming the softened second raw film into the shape of the film container; inserting the vacuum-formed second raw film into the accommodating part and combining it with the jig; cutting an edge of the second raw film coupled to the jig integrally with the jig; and removing the jig from the second raw film having the edge cut.

Also, preferably, the heating and softening of the second raw film may be performed by non-contact heating the second raw film at 270 to 300 °C for 12 to 18 seconds.

Also, preferably, the second raw film is composed of at least one of polyamide (PA), ethylene vinylalcohol copolymer (EVOH), linear low-density polyethylene (LLDPE), polypropylene (PP), and polyethylene (PE). It includes one layer and may have a thickness of 0.08 to 0.16 mm.

Preferably, the manufacturing of the container may include: coupling the film container to the container body so that the outer surface of the film container adheres to the inner surface of the container body; arranging the container body to which the film container is coupled on a soft compression jig; And it may include the step of bonding the rim of the film container and the content container body through thermal compression.

Also, preferably, the step of bonding the rim of the film container and the inner container body is performed by thermally compressing the rim of the film container at 150 to 160 ° C. for 24 to 32 seconds with a load of 2.8 to 3.2 ton. It can be.

According to the present invention, the amount of remaining contents of the cosmetic container can be minimized by implementing such that the film container contracts as the contents are discharged and pushes the remaining contents upward.

In addition, according to the present invention, the same function as an airless container can be added by easily mounting it to a compact container having a low height.

In addition, according to the present invention, by effectively preventing shrinkage and deformation of the raw film using a jig during the manufacturing process of the film container, it is possible to lower the probability of occurrence of defective products.

In addition, according to the present invention, by applying a method of vacuum forming through a mold in which a plurality of holes are formed in corners, etc., it is possible to more easily implement the shape of a product with angular corners or depth.

In order to more fully understand the drawings cited in the detailed description of the present invention, a brief description of each drawing is provided.
1 shows a method for manufacturing an inner container including a film container according to an embodiment of the present invention.
FIG. 2 shows step S110 of the method of FIG. 1 in more detail, and FIG. 3 shows a manufacturing process according to the method of FIG. 2 .
FIG. 4 exemplarily shows a jig manufactured according to the method of FIG. 2 .
5 shows step S120 of the method of FIG. 1 in more detail, and FIG. 6 shows a manufacturing process according to the method of FIG. 5 .
FIG. 7 exemplarily shows a raw film used to carry out the method of FIG. 5 .
8 shows step S130 of the method of FIG. 1 in detail, and FIG. 9 shows a manufacturing process according to the method of FIG. 8 .
FIG. 10 illustratively shows the content device manufactured according to the method of FIG. 8 .
Figures 11a and 11b shows a cosmetic container equipped with information container according to an embodiment of the present invention.
12 shows a conventional pumped vessel.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description will be omitted. In addition, embodiments of the present invention will be described below, but the technical idea of the present invention is not limited or limited thereto and can be modified and implemented in various ways by those skilled in the art. On the other hand, for convenience described below, the directions of up, down, left and right are based on the drawings, and the scope of the present invention is not necessarily limited to the corresponding directions.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another element interposed therebetween. . Throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated. Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term.

1 shows a method for manufacturing an inner container including a film container according to an embodiment of the present invention.

Referring to FIG. 1 , the manufacturing method 100 may include manufacturing a jig (S110), manufacturing a film container (S120), and manufacturing a container (S130).

In step S110, a jig (jig) used in the manufacture of a film container (step S120) may be manufactured by molding the first raw film. For example, step S110 may be performed by softening the first raw film, performing vacuum forming using a predetermined mold, and then cutting an edge. Through step S110, the manufactured jig may be combined with the second raw film vacuum-formed in the process of performing step S120 to prevent shrinkage and deformation of the second raw film.

In step S120, a film container may be manufactured by molding the second raw film. For example, step S120 may be performed by softening the second raw film, performing vacuum forming using a predetermined mold, and combining it with a jig to integrally cut the edge.

In step S130, the inner container with the film container inserted inside may be manufactured by combining the film container with the inner container body. For example, in step S130, the film container is inserted into the inner container body, the rim of the film container is bonded to the rim of the inner container body through a thermal compression method, and then the inner container cover is placed on the upper side of the inner container body. It can be done in a combined way.

A specific process of performing steps S110 to S130 will be described in more detail with reference to FIGS. 2 to 10 below.

FIG. 2 shows step S110 of the method of FIG. 1 in more detail, and FIG. 3 shows a manufacturing process according to the method of FIG. 2 . Also, FIG. 4 exemplarily shows a jig manufactured according to the method of FIG. 2 .

In step S210, the first raw film 310 may be softened by heating. Here, the first raw film 310 may be made of, for example, a material such as PET (Polyethylene terephthalate) or ABS (acrylonitrile butadiene styrene), but is not limited thereto, and in an embodiment to which the present invention is applied Accordingly, the first raw film 310 may be made of various materials having good elongation. Also, the thickness of the first raw film 310 may be 0.2 to 0.4 mm, preferably 0.3 mm.

In one embodiment, step S210 may be performed by non-contact heating by the heating plate 320 . For example, the first raw film 310 may be softened by non-contact heating the first raw film 310 at a temperature of 270 to 300 °C for 12 to 18 seconds using the heating plate 320 .

Subsequently, in step S220 , the softened first raw film 310 may be vacuum-formed into the shape of the jig 10 . For example, the softened first raw film 310 is placed in a mold 330 having a plurality of holes, and the first raw film 310 is molded into the shape of the jig 10 by sucking air through the holes. can be molded into In this case, by forming a plurality of holes in the inner corner of the mold 330, it can be implemented to more easily mold the corner of the jig 10.

At this time, the jig 10 plays a role of supporting the second raw film by combining with the second raw film in the process of manufacturing the film container, and at least a part has a shape corresponding to the film container, and in particular, step S220. Through, the jig 10 may be formed with a receiving portion 12 having a shape corresponding to the film container.

Subsequently, in step S230 , the molded first raw film 310 may be cooled. For example, step S230 may be performed by spraying cooling air at 18 to 23° C. for 8 to 12 seconds.

Subsequently, in step S240 , an edge of the molded first raw film 310 may be cut, and at least one through hole 14 may be formed in at least one area of the accommodating part 12 . For example, cutting the edge of the first raw film 310 formed to meet a predetermined standard using the cutting device 340 (that is, the edge formed outward along the upper circumference of the receiving portion 12) And, by forming at least one through hole 14 on the lower surface of the accommodating part 12, it is possible to complete the jig 10 of the shape shown in FIG.

5 shows step S120 of the method of FIG. 1 in more detail, and FIG. 6 shows a manufacturing process according to the method of FIG. 5 . Also, FIG. 7 exemplarily shows a raw film used to carry out the method of FIG. 5 .

In step S510, the second raw film 610 may be softened by heating. Here, as shown in FIG. 7 , the second raw film 610 is selected from among polyamide (PA), ethylene vinylalcohol copolymer (EVOH), linear low-density polyethylene (LLDPE), polypropylene (PP), and polyethylene (PE). It may include at least one layer made of at least one material. For example, the EVOH layer can block the transmission of light such as sunlight and protect the contents by blocking the transmission of air, and the LLDPE layer can improve the bonding strength with the inner container body made of PE material. function can be performed. However, these materials are illustrative and not limited thereto, and according to an embodiment to which the present invention is applied, the second raw film 610 may be implemented with layers of various materials known in the art. In addition, the second raw film 610 may have a thickness of 0.08 to 0.16 mm, preferably 0.12 mm.

In one embodiment, step S510 may be performed by non-contact heating by the heating plate 620 . For example, the second raw film 610 may be softened by non-contact heating the second raw film 610 at a temperature of 270 to 300 °C for 12 to 18 seconds using a heating plate 620 .

Subsequently, in step S520 , the softened second raw film 610 may be vacuum-formed into the shape of the film container 20 . For example, the softened second raw film 610 is placed in a mold 630 having a plurality of holes, and the second raw film 610 is placed in the film container 20 by sucking air through the holes. Can be molded into shape. In this case, by forming a plurality of holes at the inner corner of the mold 630, it is possible to more easily mold the corner of the film container 20 and manufacture a deep container.

Then, in step S530, the molded second raw film 610 may be cooled. For example, step S530 may be performed by spraying cooling air at 18 to 23° C. for 8 to 12 seconds.

Subsequently, in step S540, the molded second raw film 610 may be coupled to the jig 10, and cutting may be performed on the edge. For example, the second raw film 610 molded to adhere to the accommodating portion 12 and the edge of the jig 10 is inserted into the jig 10, and the second raw film ( 610) may be integrally cut with the jig 10 to meet the specifications of the film container 20.

Subsequently, in step S550, the film container 20 may be completed by separating and/or removing the coupled jig 10. The film container 20 may be configured to have a shape corresponding to the inside of the container body.

According to the present invention, by combining the jig 10 to support the thin second raw film 610, shrinkage or deformation of the second raw film 610 during the manufacturing process of the film container can be effectively prevented. there is. At this time, since the through hole 14 is formed in the accommodating part 12 of the jig 10, the molded second raw film 610 is more easily adhered to and coupled to the jig 10 or separable therefrom. do.

8 shows step S130 of the method of FIG. 1 in detail, and FIG. 9 shows a manufacturing process according to the method of FIG. 8 . In addition, FIG. 10 illustratively shows the internal device manufactured according to the method of FIG. 8 .

In step S810, the film container 20 may be inserted into and coupled to the container body 30. For example, the film container 20 so that the outer surface of the film container 20 is in close contact with the inner surface of the inner container body 30, and the rim of the film container 20 is disposed on the rim of the inner container body 30. Can be coupled to the inside of the container body (30). In one embodiment, an inlet hole 32 for facilitating contraction of the film container 20 according to the discharge of the contents described in detail with reference to FIGS. 11A and 11B is provided on the lower surface of the container body 30 through can be formed.

Subsequently, in steps S820 and S830, the inner container body to which the film container 20 is coupled is placed on the soft crimping jig 910, and the edge of the inner container 20 is thermally bonded to the edge of the inner container body 30. can do.

In one embodiment, step S830 may be performed through a heat compression method in which the edges of the film container 20 and the inner container body 30 are simultaneously pressed with the heating plate 920 . For example, the film container 20 and the inner container body 30 may be bonded by thermal compression with a heating plate 920 at 150 to 160 ° C. for 24 to 32 seconds with a load of 2.8 to 3.2 ton. . At this time, since the soft crimping jig 910 is disposed under the inner container body 30, it is possible to perform the bonding more closely and smoothly. However, this bonding method is exemplary, and according to an embodiment to which the present invention is applied, a bonding method known in the art, such as bonding through an adhesive or ultrasonic bonding, may be applied.

Next, in step S840 , the contents container 20 , 30 , and 40 may be completed by coupling the container container cover 40 to the open top of the container container body 30 . For example, the inner container cover 40 may be coupled to the upper portion of the inner container body 30 by various methods known in the art, such as ultrasonic bonding, screw coupling, and fitting. At this time, a coupling hole 42 in which a discharge pump for discharging contents such as cosmetics stored inside the film container 20 to the outside may be formed through a central region of the inner container cover 40 .

Meanwhile, the inner container body 30 and the inner container cover 40 may be manufactured through a separate process (eg, insert injection, etc.), and may be made of, for example, PE material, but are limited thereto. It is not.

Figures 11a and 11b shows a cosmetic container equipped with information container according to an embodiment of the present invention.

Referring to Figures 11a and 11b, the cosmetic container 1100 may be equipped with internal containers (1120, 1130, 1140) including a film container 1120 on the inside. Here, the film container 1120 and the inner containers 1120, 1130, and 1140 may be manufactured according to the manufacturing method described above with reference to FIGS. 1 to 10.

Inside the film container 1120, for example, liquid contents such as cosmetics may be stored, and the discharge pump 1150 is coupled to the coupling hole (reference numeral not shown) of the container cover 1140, so that the film Container 1120 may be sealed. Here, the discharge pump 1150 is configured to discharge the liquid content stored in the film container 1120 to the outside through a change in internal pressure, and may be implemented in various configurations known in the art.

When the user operates the discharge pump 1150 through pressurization or the like, contents stored in the film container 1120 may be discharged to the outside through a discharge hole (not shown) connected to the discharge pump 1150. Due to the discharge of the contents from the film container 1120, the internal pressure of the film container 1120 is reduced, and accordingly, the film container 1120 adhered to the container body 1130 is separated and the film container 1120 can be contracted.

As such, the cosmetic container 1100 according to the present invention is configured such that the soft film container 1120 shrinks and pushes the contents upward according to the discharge of the contents, so that the user can remove the contents without any residual amount or with only a minimum amount remaining. can be used

As described above, the optimum embodiment has been disclosed in the drawings and specifications. Although specific terms have been used herein, they are only used for the purpose of describing the present invention and are not used to limit the scope of the present invention described in the claims or defining the meaning. Therefore, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

10: jig 12: receiving part
14: through hole 20, 1120: film container
30, 1130: container body 32: inlet hole
40, 1140: container cover 42: coupling hole
310: first raw film 320, 620, 920: heating plate
330, 630: mold 340, 640: cutting device
610: second raw material film 910: compression jig
1100: cosmetic container 1150: discharge pump

Claims (9)

As a method for manufacturing an inner container including a film container,
Forming a first raw film to manufacture a jig (jig) including a receiving portion corresponding to the shape of the film container on the inside;
manufacturing the film container by combining the second raw film molded into the shape of the film container with the jig through the receiving part and integrally cutting the rim; and
Including the step of inserting the film container into the inner container body, and manufacturing the inner container by bonding the film container and the edge of the inner container body,
The second raw material film is a soft thin film having a thinner thickness than the first raw material film. According to claim 1,
Manufacturing the jig is
heating and softening the first raw film;
vacuum forming the softened first raw film into the shape of the jig; and
A manufacturing method comprising the step of cutting an edge of the vacuum-formed first raw film. According to claim 2,
Manufacturing the jig is
The manufacturing method further comprising the step of creating a through hole in at least one region of the accommodating part formed in the vacuum-formed first raw film. According to claim 2,
The step of softening by heating the first raw film,
The manufacturing method carried out by non-contact heating the first raw film at 270 to 300 ° C. for 12 to 18 seconds. According to claim 2,
The thickness of the first raw film is 0.2 to 0.4 mm, the manufacturing method. According to claim 1,
The step of manufacturing the film container,
heating and softening the second raw film;
vacuum forming the softened second raw film into the shape of the film container;
inserting the vacuum-formed second raw film into the accommodating part and combining it with the jig;
cutting an edge of the second raw film coupled to the jig integrally with the jig; and
And removing the jig from the second raw film having the edge cut. According to claim 6,
The step of softening by heating the second raw film,
The manufacturing method carried out by non-contact heating the second raw film at 270 to 300 ° C. for 12 to 18 seconds. According to claim 6,
The second raw material film is at least one layer composed of at least one of polyamide (PA), ethylene vinylalcohol copolymer (EVOH), linear low-density polyethylene (LLDPE), polypropylene (PP), and polyethylene (PE). Including, the thickness is 0.08 to 0.16 mm, the manufacturing method. According to claim 1,
The step of manufacturing the content group,
coupling the film container to the container body so that the outer surface of the container adheres to the inner surface of the container body;
arranging the container body to which the film container is coupled on a soft compression jig; and
, Manufacturing method comprising the step of bonding the rim of the film container and the content container body through thermal compression.

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