KR20030015436A - Porous plastic molding product injection method using water soluble medium - Google Patents
Porous plastic molding product injection method using water soluble medium Download PDFInfo
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- KR20030015436A KR20030015436A KR1020010048931A KR20010048931A KR20030015436A KR 20030015436 A KR20030015436 A KR 20030015436A KR 1020010048931 A KR1020010048931 A KR 1020010048931A KR 20010048931 A KR20010048931 A KR 20010048931A KR 20030015436 A KR20030015436 A KR 20030015436A
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- water
- soluble medium
- molded article
- soluble
- porous plastic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
본 발명은 플라스틱 성형품 제조 방법에 관한 것으로, 더욱 상세하게는 수용성 매개체를 플라스틱 수지와 혼합한 다음 성형품을 사출한 후, 이를 물에 침수시킴으로써 다공성 플라스틱을 제조하도록 하는 수용성 매개체를 이용한 다공성 플라스틱 성형품 사출방법에 관한 것이다.The present invention relates to a method for manufacturing a plastic molded article, and more particularly, a method of injecting a porous plastic molded article using a water soluble medium for preparing a porous plastic by mixing a water soluble medium with a plastic resin and then injecting the molded product and immersing it in water. It is about.
일반적으로 플라스틱 성형품의 제조 방법은 플라스틱 수지를 용융한 다음 플라스틱 수지를 사출기로 성형하여 성형품을 완성하였다.In general, a method of manufacturing a plastic molded article is obtained by melting the plastic resin and then molding the plastic resin by an injection molding machine.
그러나 이렇게 사출된 플라스틱 성형품은 투과성이 없기 때문에 그 용도가 밀폐형으로 제한되는 문제점이 있다.However, the plastic molded article thus injected has a problem in that its use is limited to a closed type because it is not permeable.
따라서 본 발명의 목적은 상기와 같은 문제점을 해결하기 위한 것으로, 일반 사출 성형품과 동일한 체적에서도 높은 강도를 가지며, 경량화가 가능하고, 물이나 공기의 통과가 가능한 플라스틱 성형품을 제조하도록 하는데 있다.Accordingly, an object of the present invention is to solve the above problems, and to produce a plastic molded article having a high strength in the same volume as that of a general injection molded article, being lightweight, and allowing passage of water or air.
도 1은 본 발명에 따른 수용성 매개체를 이용한 다공성 플라스틱 성형품 사출방법의 공정을 설명하기 위한 공정도1 is a process chart for explaining the process of the injection molding method of a porous plastic molded article using a water-soluble medium according to the present invention
도 2는 본 발명에 따른 수용성 매개체를 이용한 다공성 플라스틱 성형품 사출방법을 설명하기 위한 설명도2 is an explanatory view for explaining a method of injection molding a porous plastic molded article using a water-soluble medium according to the present invention.
<도면중 주요부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>
S1 : 혼합 단계S2 : 용융 단계S1 mixing step S2 melting step
S3 : 사출 단계S4 : 용해 단계S3: Injection step S4: Dissolution step
상기와 같은 목적을 달성하기 위한 본 발명의 특징은,Features of the present invention for achieving the above object,
플라스틱 성형품 제조 방법에 있어서,In the method for producing a plastic molded article,
물에 용해가 가능한 수용성 매개체의 분말 또는 입자를 플라스틱 수지에 소정 비율로 혼합하는 혼합 단계와,A mixing step of mixing the powder or particles of the water-soluble medium soluble in water with the plastic resin at a predetermined ratio,
수용성 매개체가 혼합된 플라스틱 수지를 용융하는 용융 단계와,A melting step of melting the plastic resin mixed with the water-soluble medium,
상기 단계에서 용융된 플라스틱 수지를 사출기로 성형하는 사출 단계와,An injection step of molding the molten plastic resin with the injection machine;
성형된 성형물을 물에 침수시켜 수용성 매개체를 용해시키는 용해 단계로 이루어지는 것을 특징으로 한다.It is characterized by consisting of a dissolution step of immersing the molded molding in water to dissolve the water-soluble medium.
여기에서 상기 혼합 비율은,Here, the mixing ratio is
수용성 매개체 비 플라스틱 수지가 4 : 6 ~ 6 : 4의 비율로 혼합된다.Water-soluble media Non-plastic resin is mixed at a ratio of 4: 6 to 6: 4.
여기에서 또한 상기 수용성 매개체는, 염화나트륨(Na Cl)이다.Here too, the water soluble mediator is sodium chloride (Na Cl).
이하, 본 발명에 의한 수용성 매개체를 이용한 다공성 플라스틱 성형품 사출방법의 공정 및 작용을 도 1을 참조하여 상세하게 설명하기로 한다.Hereinafter, the process and action of the porous plastic molded article injection method using the water-soluble medium according to the present invention will be described in detail with reference to FIG.
도 1은 본 발명에 따른 수용성 매개체를 이용한 다공성 플라스틱 성형품 사출방법의 공정을 설명하기 위한 공정도이고, 도 2는 본 발명에 따른 수용성 매개체를 이용한 다공성 플라스틱 성형품 사출방법을 설명하기 위한 설명도이다.1 is a process chart for explaining the process of the injection molding method of a porous plastic molded article using a water-soluble medium according to the present invention, Figure 2 is an explanatory diagram for explaining the injection method of a porous plastic molded article using a water-soluble medium according to the present invention.
도 1 및 도 2를 참조하면 먼저 본 발명은 물에 용해가 가능한 수용성 매개체의 분말 또는 입자를 플라스틱 수지에 소정 비율로 혼합한다(S1). 여기에서 수용성 매개체 비 플라스틱 수지가 4 : 6 ~ 6 : 4의 비율로 혼합되고, 5 : 5의 비율로 혼합되는 것이 바람직하며, 성형품의 두께 및 용도에 따라 그 혼합 비율은 임의로 조정이 가능하다. 여기에서 또한 수용성 매개체는, 염화나트륨(Na Cl)이 사용된다.1 and 2, the present invention first mixes a powder or particles of a water-soluble medium soluble in water to a plastic resin at a predetermined ratio (S1). Here, it is preferable that the water-soluble medium ratio plastic resin is mixed at a ratio of 4: 6 to 6: 4, and mixed at a ratio of 5: 5, and the mixing ratio can be arbitrarily adjusted according to the thickness and use of the molded article. Here, as the water-soluble medium, sodium chloride (Na Cl) is used.
그런 다음 수용성 매개체가 혼합된 플라스틱 수지를 용융하고(S2), 용융된 플라스틱 수지를 사출기로 성형한다(S3).Then, the plastic resin mixed with the water-soluble medium is melted (S2), and the molten plastic resin is molded by an injection molding machine (S3).
성형이 완료되면 성형된 성형물을 일정 시간(수용성 매개체가 완전히 용해되는 시간)동안 물에 침수시켜 수용성 매개체를 용해시킨다(S4).When the molding is completed, the molded article is immersed in water for a predetermined time (time for dissolving the water-soluble medium completely) to dissolve the water-soluble medium (S4).
이러한 방법으로 플라스틱 성형품을 제조하면, 성형품에 공극이 형성되기 때문에 이러한 성형품을 전자 제품의 케이스로 사용하는 경우 자체적으로 통풍이 가능하기 때문에 강제적으로 내부를 환기시키지 않아도 된다.When the plastic molded article is manufactured in this manner, voids are formed in the molded article, and thus, when the molded article is used as a case of an electronic product, ventilation of the molded article can be performed by itself so that the inside of the molded article is not forced.
그리고 공극을 가진 성형품의 단면은 마치 스폰지처럼 플라스틱 수지가 서로 연결된 구조를 가지기 때문에 유효 단면적이 증대되며 따라서 다공성 성형 완제품에 도전체를 도포하여 전자파 흡수 및 차폐제로 사용할 수 있다.In addition, the cross-section of the molded article having voids has a structure in which plastic resins are connected to each other like a sponge, so that the effective cross-sectional area is increased, and thus, a conductive material may be applied to the finished porous product to be used as an electromagnetic wave absorbing and shielding agent.
또한 동일 체적의 일반 사출 성형품에 비해 무게가 가벼워지고, 다양한 공극이 형성되기 때문에 동일 체적으로 높은 강도의 구조물 제작이 가능하며, 자체적으로 여과가 가능하다.In addition, since the weight is lighter than the general injection molded articles of the same volume and various pores are formed, it is possible to manufacture a structure of high strength with the same volume, and to filter by itself.
한편 소용성 매개체의 입자 크기를 용도에 맞게 조절함으로써 공극의 크기를 가변시킬 수 있기 때문에 침수지의 바닥재 등 일상 생활뿐만 아니라 흡음제 등 산업현장에 광범위한 응용이 가능하다.On the other hand, by adjusting the particle size of the solubilizing medium according to the application, the size of the pores can be varied, so that it is possible to apply a wide range of applications in industrial sites, such as sound absorbents as well as daily life, such as flooring of flood paper.
이상에서 설명한 바와 같이 본 발명에 따른 수용성 매개체를 이용한 다공성 플라스틱 성형품 사출방법에 의하면, 일반 사출 성형품과 동일한 체적에서도 높은 강도를 가지며, 유효 단면적을 크게 할 수 있을 뿐만 아니라 경량화가 가능하고, 물이나 공기의 통과가 가능한 플라스틱 성형품을 제조할 수 있다.As described above, according to the method for injecting a porous plastic molded article using a water-soluble medium according to the present invention, it has a high strength even in the same volume as a general injection molded article, can increase the effective cross-sectional area, and can be lightened, and can be water or air. The plastic molded article which can pass through can be manufactured.
따라서 다공성 사출 성형품은 구조물 설계, 통기성 케이스, 여과용 필터, 전자파 흡수 및 차폐제, 흡음제, 배수용 바닥제 등에 이용할 수 있다.Therefore, the porous injection-molded article can be used for structure design, breathable case, filtration filter, electromagnetic wave absorbing and shielding agent, sound absorbing agent, drainage flooring and the like.
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| KR1020010048931A KR20030015436A (en) | 2001-08-14 | 2001-08-14 | Porous plastic molding product injection method using water soluble medium |
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| KR1020010048931A KR20030015436A (en) | 2001-08-14 | 2001-08-14 | Porous plastic molding product injection method using water soluble medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100836503B1 (en) * | 2007-05-25 | 2008-06-09 | 서강대학교산학협력단 | Re-entrant porous structure with negative poisson's ratio and method for manufacturing of the same |
| KR101018949B1 (en) * | 2008-11-01 | 2011-03-02 | 서명화 | Manufacturing method of receptacle using halite |
| CN102759806A (en) * | 2011-04-28 | 2012-10-31 | 星欧光学股份有限公司 | Highly oxygen permeable contact lenses with voids and methods of making same |
| KR101589295B1 (en) | 2015-07-02 | 2016-02-03 | 강대철 | manufacturing method of kitchenware |
-
2001
- 2001-08-14 KR KR1020010048931A patent/KR20030015436A/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100836503B1 (en) * | 2007-05-25 | 2008-06-09 | 서강대학교산학협력단 | Re-entrant porous structure with negative poisson's ratio and method for manufacturing of the same |
| KR101018949B1 (en) * | 2008-11-01 | 2011-03-02 | 서명화 | Manufacturing method of receptacle using halite |
| CN102759806A (en) * | 2011-04-28 | 2012-10-31 | 星欧光学股份有限公司 | Highly oxygen permeable contact lenses with voids and methods of making same |
| KR101589295B1 (en) | 2015-07-02 | 2016-02-03 | 강대철 | manufacturing method of kitchenware |
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