KR101637023B1 - Injection mold apparatus and use thereof in the manufacture of cosmetic case - Google Patents

Injection mold apparatus and use thereof in the manufacture of cosmetic case Download PDF

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Publication number
KR101637023B1
KR101637023B1 KR1020140135328A KR20140135328A KR101637023B1 KR 101637023 B1 KR101637023 B1 KR 101637023B1 KR 1020140135328 A KR1020140135328 A KR 1020140135328A KR 20140135328 A KR20140135328 A KR 20140135328A KR 101637023 B1 KR101637023 B1 KR 101637023B1
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KR
South Korea
Prior art keywords
mold
resin
main
cavity
hollow
Prior art date
Application number
KR1020140135328A
Other languages
Korean (ko)
Other versions
KR20160041466A (en
Inventor
김기열
국송희
김병철
신대현
장재명
Original Assignee
(주)광주금형
주식회사 디엔티
(주) 젠컴에너지
김병철
국송희
고은강
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)광주금형, 주식회사 디엔티, (주) 젠컴에너지, 김병철, 국송희, 고은강 filed Critical (주)광주금형
Priority to KR1020140135328A priority Critical patent/KR101637023B1/en
Publication of KR20160041466A publication Critical patent/KR20160041466A/en
Application granted granted Critical
Publication of KR101637023B1 publication Critical patent/KR101637023B1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/2602Mould construction elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/3403Foaming under special conditions, e.g. in sub-atmospheric pressure, in or on a liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/36Feeding the material to be shaped
    • B29C44/38Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/34Moulds having venting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • B29C45/73Heating or cooling of the mould
    • B29C45/7331Heat transfer elements, e.g. heat pipes

Abstract

The present invention relates to an injection mold apparatus and a cosmetic case made using the injection mold apparatus, wherein the injection mold apparatus is provided with a housing space for accommodating a medicine therein, And an injector for injecting a master batch in which a high temperature molten resin and a plurality of foams are mixed in the cavity into the cavity.
The injection mold apparatus according to the present invention can manufacture a cosmetic case by using a master batch in which a molten resin and a foam are mixed, so that it is possible to easily manufacture a cosmetic case in which a plurality of foams are drawn into the inner wall to prevent deformation due to heat There are advantages.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection mold apparatus and a cosmetic case made using the same,

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection mold apparatus, and more particularly, to an injection mold apparatus for manufacturing a cosmetic case capable of accommodating cosmetics therein.

In general, a cosmetic container is filled with cosmetics in a hexagonal or cylindrical container body, and the opening of the container is coupled with a lid by a detachable type using a screw or a projection so that the lid is separated from the container body inlet when the contents are drawn out , And these cosmetic containers are printed on the outside with a product name, manufacturer name, and a design image indicating the product image to provide the product quality, the advertising effect of the company, and the external beauty of the product.

However, in the case of a cosmetic container having a single structure in the past, there has been a problem in that the container body is frequently broken by an external impact due to careless handling, which is not easy to handle. In addition, the single-structure container is printed with a color pattern or a character design pattern on the outside thereof, which is another problem that the color and shape are easily peeled off due to scratching or abrasion during use, there was.

Recently, a container body having a dual structure composed of an outer body and an inner body has been disclosed. For example, Korean Utility Model Application No. 2002-27267, 2004-18411, 2004-35645 The introduction of a dual-structure cosmetic container has been introduced.

Although conventional double structure cosmetic containers differ slightly in shape and structure, in general, the conventional dual structure cosmetic container includes an outer container made of transparent or opaque material, and a coupling means And a cap detachably coupled to the inner container inlet portion of the container body in a screw or lock manner. The container body has an inlet portion provided therein and an inner container filled with cosmetics therein.

However, the conventional dual structure cosmetic container has a disadvantage in that an external force is applied to the outer body and the inner body because the outer body is bonded to the inner body with an adhesive, or the inner body is deformed when heated or cooled by the external environment.

It is an object of the present invention to provide an injection mold apparatus capable of manufacturing a case in which a plurality of foams are introduced into a cosmetic case, rather than a dual structure.

According to an aspect of the present invention, there is provided an injection mold apparatus for manufacturing a case having a housing space for accommodating a drug therein, the apparatus comprising: And an injector for injecting a master batch in which a high-temperature molten resin and a plurality of foams are mixed in the cavity into the cavity.

The foam is formed into a spherical shape, and a hollow is formed therein.

The foam is heated by the heat of the resin when it is mixed with the resin in the extruder and expanded.

The foam includes a spherical main cell formed with an inner hollow and formed of an acrylonitrile copolymer and a hydrocarbon filled in the hollow of the main cell and expanded by heat of the resin.

Meanwhile, the cosmetic case according to the present invention includes a container having an upper opened space for accommodating cosmetics therein, a container having a plurality of foams embedded in a wall thereof, And a cap provided on the container, wherein the foam is formed into a spherical shape, and a hollow is formed inside.

The injection mold apparatus according to the present invention can manufacture a cosmetic case by using a master batch in which a molten resin and a foam are mixed, so that it is possible to more easily manufacture a cosmetic case in which a plurality of foams are drawn into the inner wall to prevent deformation due to heat There are advantages.

1 is a perspective view of a cosmetic case according to the present invention,
Fig. 2 is a sectional view of an injection mold apparatus for manufacturing Fig. 1. Fig.

Hereinafter, a cosmetic case according to a preferred embodiment of the present invention and an injection mold apparatus for manufacturing the same will be described in detail with reference to the accompanying drawings.

1 shows a cosmetic case 110 according to an embodiment of the present invention.

Referring to the drawings, a cosmetics case 110 includes a container 111 having an upper opening for accommodating cosmetics therein, a container 111 having a plurality of foams 112 embedded in a wall thereof, And a cap 113 installed on the container 111 so as to close the opened upper portion of the container.

The container 111 is formed in a cylindrical shape, and the upper surface thereof is provided with a threaded portion to which the cap 113 can be screwed. The threaded portion is formed in an annular shape with respect to the center of the container 111, and a male thread is formed on the outer peripheral surface.

The container 111 is injection molded by a synthetic resin mixed with the foam 112 so that a plurality of foams 112 can be embedded on the wall surface. The foam 112 is formed in a spherical shape, and a hollow is provided therein.

The cap 113 closes the upper portion of the accommodating space opened by being screwed into the threaded portion formed on the upper portion of the container 111. [ The cap 113 preferably has a predetermined strength and is formed of a synthetic resin material such as plastic having excellent moldability.

The cosmetic case 110 according to the present invention constructed as described above is advantageous in that a plurality of foams 112 are drawn inside the inner wall of the case 110 to prevent deformation due to heat.

2, an injection mold apparatus for manufacturing the cosmetic case 110 according to the present invention is shown.

Referring to the drawings, the injection mold apparatus is for manufacturing the case 110 provided with a receiving space for accommodating medicines therein, and forms a cavity 12 corresponding to the case 110 And an injector 200 for injecting a master batch in which a high temperature molten resin and a plurality of foams 112 are mixed in the cavity 12 into the cavity 12.

The mold unit includes a first mold 20 supported by a first fixing plate 11 and a cavity 12 formed by molding with the first mold 20 to be injected, And a second metal mold (30). Cooling means (not shown) for supplying cooling water to at least one side of the first metal mold 20 and the second metal mold 30 to cool the metal mold before taking out the product molded in the metal mold, The first mold 20 and the second mold 30 are provided on at least one side of the mold 20 and the second mold 30 so as to perform the mold separation of the first mold 20 and the second mold 30, 30) and heating means (not shown) for maintaining the temperature at the time of injection.

A plurality of support holes 31 are formed on the side of the second mold 30 which is supported by the second fixing plate 13 and correspond to the formation portion of the cavity 12, Reinforcing rods 32 are inserted into the holes 31 to improve the structural strength during molding. And a heat insulating means (not shown) for preventing heat transfer of the reinforcing rod from the inner surface of the upper surface of the support hole 31 and heat transfer from the second mold 30 to the second fixing plate 13, (Not shown).

(Not shown) provided between the end of the reinforcing rod 32 and the inner surface of the support hole 31 and a second heat insulating member (not shown) provided between the second mold 30 and the second fixing plate 13 And a plate-like second heat insulator (63) provided between the first heat insulator and the second heat insulator. In order to reduce the contact area between the second mold 30 and the upper fixing plate 13, a plurality of protrusions may be formed on the second mold or the first mold.

The first mold 20 of the mold unit has a mold mounting portion 11a formed on the first mounting plate 11 and inserted into the mold mounting portion 11a. The mold mounting portion 11a ) And the outer peripheral surface of the first metal mold (20). It is preferable that a plurality of protrusions are formed on the outer surface of the mold mounting portion 11a or the first metal mold 20 to reduce the contact area therebetween so that the heat insulating material is filled therebetween or is insulated by air .

The injector 200 includes a housing tank in which a resin and a foam 112 are accommodated, a hollow portion 201 communicating with the housing tank, a shutter (not shown) (not shown) A screw 204 rotatably installed in the main body 202; a heater 205 installed on an outer circumferential surface of the main body 202; And gas supply means (300). The gas may be nitrogen gas or carbon dioxide gas, but is not limited thereto. The gas supply means 300 includes a gas tank 301, a connection pipe 302 connecting the tank and the hollow portion 201 of the main body 203, and a control valve 303, and the connection pipe may be further provided with a pressurizing pump 305.

At this time, the foam 112 is formed in a spherical shape, and hollow is formed therein. When the foam 112 is mixed with the resin in the injection machine, it is heated by the heat of the resin and expanded. The foam 112 has a spherical main cell formed with an internal hollow and formed of acrylonitrile copolymer and a hydrocarbon filled in the hollow of the main cell and expanded by heat of the resin do.

Further, the foam 112 may be a product of ADVANCELL EM manufactured by Sekisui. The average particle diameter of the Advan cell emulsion before expansion is 15 to 40 占 퐉, and after the expansion, the average particle diameter is increased to 40 to 150 占 퐉.

The operator injects a master batch containing the resin and the foam 112 into a receiving tank. The master batch passes through the main body 202 and is injected into the cavity 12 by screws. The foam 112 is heated and expanded by the heater and the molten high-temperature resin. The expanded foam 112 is injected into the cavity 12 together with the molten resin and injection molded.

The injection mold apparatus according to the present invention constructed as described above produces the cosmetic case 110 using the master batch in which the molten resin and the foam 112 are mixed, so that a plurality of the foams 112 are drawn inside the inner wall There is an advantage that the cosmetic case 110, which is prevented from being deformed by heat, can be manufactured more easily.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

20: First mold
30: second mold
110: Cosmetic case
111: container
112: foam
113: cap
200: Injection machine
202:
204: screw
205: heater
300: gas supply means

Claims (5)

  1. The present invention relates to an injection mold apparatus for manufacturing a case having a housing space for accommodating a medicine therein,
    A mold unit having first and second molds coupled to each other to form a cavity corresponding to the case;
    And an injector injecting into the cavity a master batch in which a high-temperature molten resin and a plurality of foams are mixed in the cavity,
    Wherein the foam has a spherical main cell formed with an inner hollow and formed of an acrylonitrile copolymer and a hollow main body made of a hollow body of the main cell to be heated by the heat of the resin when mixed with the resin in the injector, And a hydrocarbon which expands by the heat of the resin,
    The injector
    An accommodation tank in which the resin and the foam are accommodated,
    A main body provided in the mold unit so as to communicate with the accommodating tank and having an internal hollow portion and an end communicating with the cavity;
    A screw rotatably installed in the hollow portion of the main body,
    A heater installed on the outer circumferential surface of the body,
    And gas supply means installed in the main body for injecting nitrogen gas into the main body.
  2. delete
  3. delete
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  5. delete
KR1020140135328A 2014-10-07 2014-10-07 Injection mold apparatus and use thereof in the manufacture of cosmetic case KR101637023B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140135328A KR101637023B1 (en) 2014-10-07 2014-10-07 Injection mold apparatus and use thereof in the manufacture of cosmetic case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140135328A KR101637023B1 (en) 2014-10-07 2014-10-07 Injection mold apparatus and use thereof in the manufacture of cosmetic case

Publications (2)

Publication Number Publication Date
KR20160041466A KR20160041466A (en) 2016-04-18
KR101637023B1 true KR101637023B1 (en) 2016-07-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101916163B1 (en) 2018-09-07 2018-11-08 정우영 Manufacturing method of cosmetic case

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001018250A (en) 1999-07-02 2001-01-23 Jsp Corp Composite molding of synthetic resin
JP2008062393A (en) * 2006-09-04 2008-03-21 Sekisui Chem Co Ltd Foam for interior trimming of vehicle and its manufacturing method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0329659B2 (en) * 1982-05-13 1991-04-24
KR100446206B1 (en) * 2002-08-01 2004-08-30 삼성종합부라쉬 주식회사 manufacturing method of makeup case

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001018250A (en) 1999-07-02 2001-01-23 Jsp Corp Composite molding of synthetic resin
JP2008062393A (en) * 2006-09-04 2008-03-21 Sekisui Chem Co Ltd Foam for interior trimming of vehicle and its manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101916163B1 (en) 2018-09-07 2018-11-08 정우영 Manufacturing method of cosmetic case

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