KR20000073820A - Packing Composition - Google Patents

Packing Composition Download PDF

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Publication number
KR20000073820A
KR20000073820A KR1019990017367A KR19990017367A KR20000073820A KR 20000073820 A KR20000073820 A KR 20000073820A KR 1019990017367 A KR1019990017367 A KR 1019990017367A KR 19990017367 A KR19990017367 A KR 19990017367A KR 20000073820 A KR20000073820 A KR 20000073820A
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weight
parts
styrene
block copolymer
styrene block
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KR1019990017367A
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Korean (ko)
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이호영
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이호영
영일수지공업 주식회사
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Priority to KR1019990017367A priority Critical patent/KR20000073820A/en
Publication of KR20000073820A publication Critical patent/KR20000073820A/en

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
    • C09K3/1018—Macromolecular compounds having one or more carbon-to-silicon linkages
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2003/1087—Materials or components characterised by specific uses
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2003/1087—Materials or components characterised by specific uses
    • C09K2003/109—Crown caps

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: A resin composition for packing capable of being used for bottle caps or a packing or lining of a disposable syringe and beverage caps for heat treatment and no heat treatment at the same time by mixing a styrene block copolymer and poly(dimethylsiloxane) with polyethylene resin is provided which can simplify bottle packing processes, reduces installation expense and improve quality control. CONSTITUTION: The resin composition for packing comprises 100 parts by weight of a styrene block copolymer, 50 to 100 parts by weight of high density polyethylene, 100 to 200 parts by weight of linear low density polyethylene, 50 to 100 parts by weight of ethylene vinylacetate and 0.1 to 100 parts by weight of poly(dimethylsiloxane). The styrene block copolymer is one selected from the group consisting of a styrene-butadiene-styrene copolymer, a styrene-isoprene-styrene block copolymer and a styrene-ethyl/butylene-styrene block copolymer. The composition reduces the production cost by more than 40% and has excellent weather resistance, ozone resistance, oil resistance and heat resistance.

Description

팩킹용 조성물{Packing Composition}Packing Composition

본 발명은 팩킹용 조성물에 관한 것으로, 더욱 상세하게는 스틸렌 블럭 공중합체, 고밀도 폴리에틸렌(HDPE), 선형 저밀도 폴리에틸렌(LDPE), 에틸렌 비닐 아세테이트(EVA), 폴리(디메틸실록산) 및 기타 첨가제를 포함하여 열처리 및 비열처리 겸용의 팩킹 조성물에 관한 것이다.The present invention relates to a composition for packing, and more particularly, to a styrene block copolymer, high density polyethylene (HDPE), linear low density polyethylene (LDPE), ethylene vinyl acetate (EVA), poly (dimethylsiloxane) and other additives It relates to a packing composition for both heat treatment and non-heat treatment.

일반적으로, 병포장용 캡(cap)의 종류에는 유리 맥주병 또는 유리 소주병 등에 사용되는 크라운(crown) 알루미늄 캡과 음료수용 플라스틱병 또는 한방음료용 유리병 등에 사용되는 PP(Pilferproof) 알루미늄 캡으로 대별된다. 한편, 일회용 주사기는 고무 팩킹(packing)재를 사용하여 밀폐성을 유지한다.Generally, bottle caps are classified into crown aluminum caps used for glass beer bottles or glass shochu bottles, and PP (Pilferproof) aluminum caps used for beverage plastic bottles or herbal beverage glass bottles. . Meanwhile, the disposable syringe maintains hermeticity by using a rubber packing material.

이러한 병뚜껑이나 일회용 주사기 등에 사용되고 있는 팩킹 및 라이닝(lining)의 원료로서는 저밀도 선형 폴리에틸렌(LDPE), 에틸렌 비닐 아세테이트(EVA) 및 합성고무와 실리콘 오일 또는 수지용 활제를 적당량 혼합하여 제조하여 오고 있다.As raw materials for packing and lining used in such bottle caps or disposable syringes, low-density linear polyethylene (LDPE), ethylene vinyl acetate (EVA), synthetic rubber, and lubricants for silicone oils or resins have been prepared in a suitable amount.

한편, PP 알루미늄 캡의 팩킹재를 선택하는데 있어서는 제품의 토크(torque; 병뚜껑을 돌려서 벗끼는 힘), 가공성, 물리적 특성이나 인체 유해성을 고려하여야 한다. 그러나, 현재 사용하고 있는 원료인 저밀도 선형 폴리에틸렌, 에틸렌 비닐 아세테이트 및 합성고무 등은 제품의 토크와 가공성을 조절하는데 낮은 내열성과 낮은 열변형온도(HDT)로 물성조절에 어려움이 있다. 또한, 한방음료와 같은 열처리를 요구하는 제품의 경우 열처리후의 수축으로 인한 토크의 변화로 인해 용도별로 열처리용과 비열처리용으로 나누어 생산되어 캡 사용업체의 품질관리에 많은 어려움이 있다.In selecting the packing material of the PP aluminum cap, on the other hand, the torque of the product, the peeling force by turning the bottle cap, the processability, the physical properties, or the human hazards should be considered. However, low density linear polyethylene, ethylene vinyl acetate, and synthetic rubber, which are currently used raw materials, have difficulty in controlling physical properties due to low heat resistance and low heat distortion temperature (HDT) in controlling torque and processability of products. In addition, products that require heat treatment, such as herbal beverages are produced by dividing the heat treatment and non-heat treatment for each use due to the change in torque due to shrinkage after heat treatment has a lot of difficulties in quality control of the cap user.

일반적으로 비열처리용 토크는 8∼10Kg, 열처리용은 열처리후의 토크가 5∼7Kg범위내어야 사용이 가능하다. 현재, 사용중인 원료(예를 들어, 저밀도 선형 폴리에틸렌, 에틸렌 비닐 아세테이트 및 합성고무의 혼합물)는 열처리 전의 토크가 12∼13Kg이므로 비열처리용으로 사용할 수 없으며, 열처리 전의 토크를 8∼10Kg 범위로 낮추면 수축으로 인한 토크의 감소로 사용할 수 없어 겸용이 불가능하다.In general, the specific heat treatment torque is 8 to 10 kg, and the heat treatment torque can be used only after the heat treatment is in the range of 5 to 7 kg. At present, the raw materials in use (for example, a mixture of low density linear polyethylene, ethylene vinyl acetate and synthetic rubber) cannot be used for non-thermal treatment because the torque before heat treatment is 12 to 13 kg, and if the torque before heat treatment is lowered to a range of 8 to 10 kg, It cannot be used due to the reduction of torque due to shrinkage, which makes it impossible to use.

또한, 종래에 의료용 주사기의 팩킹 또는 라이닝용으로 사용되던 폴리염화비닐(PVC)이 의료상의 문제로 열가소성 폴리올레핀(TPO, thermoplastic polyolefin)의 일종인 산토프렌(santoprene; 몬산토사)로 대체되어 상당한 원가부담을 겪고 있다.In addition, polyvinyl chloride (PVC), which has conventionally been used for packing or lining medical syringes, has been replaced by santoprene, a type of thermoplastic polyolefin (TPO) for medical problems, and has a significant cost burden. Are going through.

이러한 종래의 문제점을 해결하기 위해 연구, 검토한 결과, 폴리에틸렌 수지에 스틸렌 블럭 공중합체와 폴리(디메틸실록산)(poly(dimethylsiloxan))을 혼합하여 우수한 팩킹재료를 얻을 수 있었고, 본 발명은 이에 기초하여 완성되었다.As a result of research and investigation to solve such a conventional problem, an excellent packing material was obtained by mixing styrene block copolymer and poly (dimethylsiloxane) (poly (dimethylsiloxan)) in polyethylene resin. It is finished.

따라서, 본 발명의 목적은 병뚜껑이나 일회용 주사기의 팩킹 또는 라이닝으로 사용될 수 있으며, 열처리 및 비열처리 조건에 구애받지 않고, 겸용이 가능한 팩킹 조성물을 제공하는데 있다.Accordingly, it is an object of the present invention to provide a packing composition that can be used as a packing or lining of a bottle cap or a disposable syringe, and can be used interchangeably regardless of heat treatment and non-heat treatment conditions.

상기 본 발명의 목적을 달성하기 위한 팩킹 조성물은, 팩킹용 조성물에 있어서, 스틸렌 블럭 공중합체 100중량부에 대하여 고밀도 폴리에틸렌(HDPE) 50∼100중량부, 선형 저밀도 폴리에틸렌 (LDPE) 100∼200중량부, 에틸렌 비닐 아세테이트(EVA) 50∼100중량부, 및 폴리(디메틸실록산) 0.1∼100중량부를 포함한다.Packing composition for achieving the object of the present invention, in the composition for packing, 50 to 100 parts by weight of high density polyethylene (HDPE), 100 to 200 parts by weight of linear low density polyethylene (LDPE) with respect to 100 parts by weight of styrene block copolymer 50 to 100 parts by weight of ethylene vinyl acetate (EVA), and 0.1 to 100 parts by weight of poly (dimethylsiloxane).

이하 본 발명을 좀 더 구체적으로 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail.

본 발명에 따르면, 본 발명의 조성물은 스틸렌 블럭 공중합체 100중량부에 대하여 고밀도 폴리에틸렌(HDPE) 50∼100중량부, 선형 저밀도 폴리에틸렌 (LDPE) 100∼200중량부, 에틸렌 비닐 아세테이트(EVA) 50∼100중량부, 및 폴리(디메틸실록산) 0.1∼100중량부를 포함한다. 또한, 필요에 따라서는 활제, 충진제와 같은 기타 첨가제를 더욱 포함할 수 있다.According to the present invention, the composition of the present invention is 50 to 100 parts by weight of high density polyethylene (HDPE), 100 to 200 parts by weight of linear low density polyethylene (LDPE), 50 to ethylene vinyl acetate (EVA) to 100 parts by weight of styrene block copolymer. 100 parts by weight and 0.1 to 100 parts by weight of poly (dimethylsiloxane). In addition, if necessary, other additives such as lubricants and fillers may be further included.

본 발명에 사용되는 스틸렌 블럭 공중합체는 플라스틱인 스틸렌의 성질과 고무인 부타디엔의 특성을 동시에 소유하여 플라스틱의 장점인 가공성과 내열성 및 탄성과 같은 고무의 특성을 겸비한 열가소성 플라스틱 고무로서, 스틸렌-부타디엔-스틸렌 블럭 공중합체(Styrene-Butadinene-Styrene block copolymer; 이하 "SBS"라 함), 스틸렌-이소프렌-스틸렌 블럭 공중합체(Styrene-Isoprene-Styrene block copolymer; 이하 "SIS"라 함), 및 스틸렌-에틸/부틸렌-스틸렌 블럭 공중합체 (Styrene-Butadinene-Styrene block copolymer; 이하 "SEBS"라 함)으로 이루어진 군으로부터 하나 또는 그 이상 선택된다.The styrene block copolymer used in the present invention possesses the properties of styrene, which is a plastic, and butadiene, which is a rubber, and combines the properties of rubber such as processability, heat resistance, and elasticity, which are advantages of plastics, and styrene-butadiene-styrene. Styrene-Butadinene-Styrene block copolymer (hereinafter referred to as "SBS"), Styrene-Isoprene-Styrene block copolymer (hereinafter referred to as "SIS"), and Styrene-ethyl / One or more selected from the group consisting of butylene-styrene block copolymers (hereinafter referred to as "SEBS").

상기 고밀도 폴리에틸렌(HDPE)는 최종 제품의 경도를 조절하기 위하여 첨가되며, 바람직한 경도상향조절을 위해 스틸렌 블럭 공중합체 100중량부에 대하여 50∼100중량부로 사용된다.The high density polyethylene (HDPE) is added to adjust the hardness of the final product, it is used in an amount of 50 to 100 parts by weight based on 100 parts by weight of the styrene block copolymer for the desired hardness control.

상기 선형 저밀도 폴리에틸렌 (LDPE) 또한 최종 제품의 경도를 조절하기 위하여 첨가되며, 바람직한 경도하향조절을 위해 스틸렌 블럭 공중합체 100중량부에 대하여 100∼200중량부로 사용된다.The linear low density polyethylene (LDPE) is also added to adjust the hardness of the final product, and is used in an amount of 100 to 200 parts by weight based on 100 parts by weight of the styrene block copolymer for controlling the desired hardness.

상기 에틸렌 비닐 아세테이트(EVA)는 최종 제품의 가공성을 조절하기 위하여 첨가되며, 바람직한 가공성 조절을 위해 스틸렌 블럭 공중합체 100중량부에 대하여 50∼100중량부가 사용된다.The ethylene vinyl acetate (EVA) is added to control the processability of the final product, 50 to 100 parts by weight is used based on 100 parts by weight of the styrene block copolymer to control the desired processability.

또한, 폴리(디메틸실록산)은 일반적으로 실리콘 고무라고 하며, 고무중 가장 우수한 내열성과 탄성을 가지고 있다. 상기 폴리(디메틸실록산)의 사용량은 스틸렌 블럭 공중합체 100중량부에 대하여 0.1∼100중량부를 사용할 수 있는데, 0.1중량부 미만이면 첨가효과 없고, 100중량부를 초과하면 가공성이 급격히 저하되는 단점이 있다.In addition, poly (dimethylsiloxane) is generally referred to as silicone rubber, and has the best heat resistance and elasticity among rubbers. The amount of the poly (dimethylsiloxane) may be used in an amount of 0.1 to 100 parts by weight based on 100 parts by weight of the styrene block copolymer, but if it is less than 0.1 part by weight, there is a disadvantage in that workability is sharply lowered.

이 밖에 산화티타니움과 같은 충진제를 원가조절을 위해 기타 첨가제로 사용할 수 있으나, 물성변화를 초래할 수 있으므로 소량 사용해야 하고, 신중해야 한다.In addition, fillers such as titanium oxide may be used as other additives for cost control, but they may be used in small amounts because they may cause a change in physical properties.

본 발명에 따르면, 스틸렌계 블럭 공중합체의 고무 특성인 넌-슬립성(non-slip)과 결점인 낮은 내열성 문제를 폴리디메틸실록산을 혼합함으로써 슬립성을 향상시키고, 내열성을 보완하여 수축을 방지할 수 있었다.According to the present invention, the non-slip and rubber properties of the styrene-based block copolymer and the low heat resistance problem are mixed with polydimethylsiloxane to improve slip resistance and to prevent heat shrinkage to prevent shrinkage. Could.

전술한 바와 같이, 팩킹제의 선택은 토크의 영향을 받는데, 일반적으로 비열처리용 토크는 8∼10Kg, 열처리용은 열처리후의 토크가 5∼7Kg범위내어야 사용이 가능하다. 현재 사용중인 원료는 열처리 전의 토크가 12∼13Kg이므로 비열처리용으로 사용할 수 없으며, 열처리 전의 토크를 8∼10Kg 범위로 낮추면 수축으로 인한 토크의 감소로 사용할 수 없어 겸용이 불가능하다. 그러나, 본 발명에 따른 조성물은 열처리후의 수축율이 낮기 때문에 비열처용 및 열처리용으로 사용 가능하다.As described above, the selection of the packing agent is influenced by the torque. Generally, the torque for the non-thermal treatment is 8 to 10 kg, and the heat treatment for the heat treatment is within the range of 5 to 7 kg. The raw materials currently used cannot be used for non-thermal treatment because the torque before heat treatment is 12-13Kg, and if the torque before heat treatment is lowered to the range of 8-10Kg, it cannot be used due to reduction of torque due to shrinkage. However, the composition according to the present invention can be used for non-thermal treatment and heat treatment because the shrinkage after heat treatment is low.

아울러, 본 발명에 따른 조성물은 인체에 무해하기 때문에 주사기용 팩킹으로도 사용이 가능하다.In addition, since the composition according to the present invention is harmless to the human body, it can be used as a packing for a syringe.

이하 실시예를 통해 본 발명을 좀 더 구체적으로 살펴보지만, 하기 예에 본 발명의 범주가 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to the following examples.

실시예 1Example 1

SBS(KTR; 금호석유) 100중량부에 대하여 폴리(디메틸실록산)(HR; 해룡 실리콘(주)) 65중량부, HDPE 83중량부, LDPE 166중량부, EVA 83중량부, 산화티타니움 0.8중량부를 혼합기에서 약 80℃ 이상의 온도에서 혼합한후 컴파운딩용 압출기로 혼련온도(H1-180℃, H2-170℃, H3-135℃, D1-140℃)에서 혼련하여 펠렛팅하고, 냉각하여 포장된 원료를 이용하여 캡을 통상의 방법으로 제조하였다. 캡을 제조후 열처리전 토크를 토크 측정기로 측정하고, 열처리후의 토크는 음료수나 드링크류 제조회사에서 완제품 병포장후 70℃에서 30분간 살균 처리후 토크를 측정하여 그 결과를 하기 표 1에 기재하였다.65 parts by weight of poly (dimethylsiloxane) (HR; Haeryong Silicone Co., Ltd.), 83 parts by weight of HDPE, 166 parts by weight of LDPE, 83 parts by weight of EVA, 0.8 parts by weight of titanium oxide, based on 100 parts by weight of SBS (KTR; Kumho Petroleum) After mixing at a temperature of about 80 ℃ or more in a mixer and kneading at a kneading temperature (H 1 -180 ℃, H 2 -170 ℃, H 3 -135 ℃, D 1 -140 ℃) with a compounding extruder, pelletized Caps were prepared in a conventional manner using cooled and packaged raw materials. After the cap was manufactured, the torque before heat treatment was measured by a torque measuring instrument. The torque after the heat treatment was measured for 30 minutes after sterilization treatment at 70 ° C. after packaging the finished product by a beverage or drink manufacturer, and the results are shown in Table 1 below. .

실시예 2Example 2

상기 실시예 1에서 폴리메틸실록산의 사용량을 75중량부로 한 것을 제외하고는 동일하게 실시하였다. 그 결과를 하기 표 1에 나타내었다.The same process as in Example 1 was repeated except that the amount of polymethylsiloxane was 75 parts by weight. The results are shown in Table 1 below.

비교예 1Comparative Example 1

LDPE 100중량부에 EVA 100중량부, 소량의 실리콘 오일 및 왁스류의 활제를 단순 혼합하였다.100 parts by weight of LDPE, 100 parts by weight of EVA, a small amount of silicone oil and a lubricant of waxes were simply mixed.

실시예 1Example 1 실시예 2Example 2 비교예 1Comparative Example 1 열처리전 토크(Kg)Torque before heat treatment (Kg) 1010 99 1313 열처리후 토크(Kg)Torque after heat treatment (Kg) 5.95.9 5.55.5 66 가공성Machinability 양호Good 양호Good 양호Good

상기 표 1을 통해 알 수 있는 바와 같이, 본 발명의 팩킹 조성물은 열처리용 및 비열처리용에 모두 겸용으로 사용할 수 있으므로 병포장 공정을 단순화시키고, 시설비 절감은 물론 품질관리의 효과를 높일 수 있었다. 한편, 종래 사용하여 오던 PVC 주사기 팩킹은 PVC의 인체유해성으로 고가품인 산토프렌으로 대체되어 상당한 원가부담을 안고 있었으나, 본 발명에 따른 조성물로 대체시 40% 이상의 원가절감 효과가 있으며, 스틸렌 블럭 공중합체의 물성결점인 내후성, 내오존성, 내유성, 내열성을 개선하여 보다 새로운 용도의 개발이 가능하다.As can be seen through Table 1, the packing composition of the present invention can be used for both heat treatment and non-heat treatment, so that the bottle packaging process can be simplified, and facility costs can be reduced and quality control can be enhanced. Meanwhile, PVC syringe packing, which has been conventionally used, has a considerable cost burden by being replaced with expensive santoprene as a human body of PVC, but has a cost reduction effect of more than 40% when replaced with the composition according to the present invention, and a styrene block copolymer It is possible to develop new applications by improving weather resistance, ozone resistance, oil resistance and heat resistance.

Claims (2)

팩킹용 조성물에 있어서, 스틸렌 블럭 공중합체 100중량부에 대하여 고밀도 폴리에틸렌(HDPE) 50∼100중량부, 선형 저밀도 폴리에틸렌 (LDPE) 100∼200중량부, 에틸렌 비닐 아세테이트(EVA) 50∼100중량부, 및 폴리(디메틸실록산) 0.1∼100중량부를 포함하는 것을 특징으로 하는 팩킹용 조성물.In the composition for packing, 50 to 100 parts by weight of high density polyethylene (HDPE), 100 to 200 parts by weight of linear low density polyethylene (LDPE), 50 to 100 parts by weight of ethylene vinyl acetate (EVA), based on 100 parts by weight of styrene block copolymer, And 0.1 to 100 parts by weight of poly (dimethylsiloxane). 제 1항에 있어서, 상기 스틸렌 블럭 공중합체가 스틸렌-부타디엔-스틸렌 블럭 공중합체, 스틸렌-이소프렌-스틸렌 블럭 공중합체 및 스틸렌-에틸/부틸렌-스틸렌 블럭 공중합체로 이루어진 군으로 선택된 하나임을 특징으로 하는 팩킹용 조성물.The method of claim 1, wherein the styrene block copolymer is one selected from the group consisting of styrene-butadiene-styrene block copolymers, styrene-isoprene-styrene block copolymers, and styrene-ethyl / butylene-styrene block copolymers. The composition for packing.
KR1019990017367A 1999-05-14 1999-05-14 Packing Composition KR20000073820A (en)

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