KR100367945B1 - Producing method of polypropylene film for washing cover and film produced thereby - Google Patents
Producing method of polypropylene film for washing cover and film produced thereby Download PDFInfo
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- KR100367945B1 KR100367945B1 KR10-2000-0014321A KR20000014321A KR100367945B1 KR 100367945 B1 KR100367945 B1 KR 100367945B1 KR 20000014321 A KR20000014321 A KR 20000014321A KR 100367945 B1 KR100367945 B1 KR 100367945B1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/44—Testing lamps
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
Abstract
본 발명은 세탁물 커버용 폴리프로필렌 필름의 제조방법 및 이에 의하여 제조된 필름에 관한 것으로, 특히 폴리프로필렌 필름의 신장율 및 내한처리후 신장율을 개선하기 위한 폴리프로필렌 필름의 제조방법에 관한 것이다. 본 발명에 따른 제조방법은 폴리프로필렌 91.38∼91.88 중량부, VLDPE 7.5∼8.5 중량부, 항블로킹제 0.22∼0.25 중량부, 대전방지제 0.25∼0.27 중량부 및 슬립성 향상제 0.15∼0.18 중량부로 이루어지는 조성물에 의하여 필름성형과정에서 헤드, 실린더 및 다이의 온도를 낮추게 할 수 있어 생산효율이 좋아지게 된다.The present invention relates to a method for producing a polypropylene film for laundry cover and a film produced thereby, and more particularly, to a method for producing a polypropylene film for improving the elongation rate of a polypropylene film and the elongation after cold treatment. The production method according to the present invention comprises a composition comprising 91.38 to 91.88 parts by weight of polypropylene, 7.5 to 8.5 parts by weight of VLDPE, 0.22 to 0.25 parts by weight of antiblocking agent, 0.25 to 0.27 parts by weight of antistatic agent and 0.15 to 0.18 parts by weight of slip improver. By lowering the temperature of the head, cylinder and die during the film forming process, the production efficiency is improved.
본 발명의 제조방법에 의해 제조된 세탁물 커버용 폴리프로필렌 필름은 신장율, 특히 내한처리후 신장율이 크게 향상되어 추운 겨울철 실외에서도 잘 찢어지지 않는 장점을 가진다.The polypropylene film for laundry cover manufactured by the manufacturing method of the present invention has an advantage that the elongation rate, especially the elongation rate after cold treatment, is greatly improved, so that it is not easily torn even in the cold winter.
Description
본 발명은 세탁물 커버용 폴리프로필렌 필름의 제조방법 및 이에 의하여 제조된 필름에 관한 것이다. 특히, 본 발명은 폴리프로필렌 필름의 신장율 및 내한처리후 신장율을 개선하기 위한 제조방법 및 이에 의하여 제조된 세탁물 커버용 필름에 관한 것이다.The present invention relates to a method for producing a polypropylene film for laundry cover and a film produced thereby. In particular, the present invention relates to a manufacturing method for improving the elongation rate of a polypropylene film and the elongation rate after cold treatment and a laundry cover film produced thereby.
종래로부터 폴리프로필렌은 높은 강성, 내열성 및 투명도를 갖는 열가소성 성형재로서 널리 사용되어 왔다.Conventionally, polypropylene has been widely used as a thermoplastic molding material having high rigidity, heat resistance and transparency.
특히 폴리프로필렌 필름은 기계적 성질, 전기적 성질, 내약품성, 투명성, 가스 및 수증기 차단성이 우수하여 스넥, 잡화 공업용 포장 등에 광범위하게 사용되어 왔으며, 또한 주위에서 흔히 보듯이 세탁소에서 세탁한 옷에 씌우는 세탁물 커버로도 많이 사용되어 왔다.In particular, polypropylene film has been widely used in snacks, general merchandise industrial packaging because of its excellent mechanical properties, electrical properties, chemical resistance, transparency, gas and water vapor barrier properties, and also, as is commonly seen in the surroundings, laundry on clothes washed in a laundry It has been used a lot as a cover.
그러나 폴리프로필렌 필름은 물성면에서 인장강도는 우수하나 신장율, 특히 내한처리후 신장율이 떨어져 추운 겨울에는 잘 찢어진다는 문제점이 있었다. 이에 따라 특히 세탁물 커버로 사용되는 폴리프로필렌 필름의 경우는 배달 등 겨울철 실외사용을 고려한 물성 개선의 필요성이 제기되어 왔다.However, polypropylene film has excellent tensile strength in terms of physical properties but has a problem in that it is easily torn in cold winter due to low elongation rate, especially elongation after cold treatment. Accordingly, in the case of a polypropylene film used as a laundry cover, there is a need for improving physical properties in consideration of outdoor use in winter, such as delivery.
한편, 폴리에틸렌이 폴리프로필렌에 비해 인장강도는 낮으나 신장율이 우수하다는 것은 이미 알려진 사실이다. 이밖에도 폴리에틸렌은 폴리프로필렌에 비해 융점이 낮아 저온 밀봉성이 좋은 점 등 물성상의 차이점으로 제품에 따라서는 폴리프로필렌과 폴리에틸렌의 물성을 상호보완적으로 사용하고자 하는 요구가 있었다.On the other hand, polyethylene has a lower tensile strength than polypropylene, but it is known that the elongation is excellent. In addition, polyethylene has a low melting point compared to polypropylene, and thus has low temperature sealing properties. Therefore, there is a need to complementarily use the properties of polypropylene and polyethylene depending on the product.
그러나 폴리프로필렌과 폴리에틸렌은 잘 섞이지 않아 이들을 직접 혼합하여 사용하는 것은 어려운 일이었다. 따라서 국내 특허공고 제 1999-221913호에서는 폴리에틸렌 필름층과 폴리프로필렌 필름층으로 이루어진 라미네이트 필름을 제공하고 있다. 그러나 이러한 라미네이트 필름은 제조방법이 복잡하고 공정이 까다로워 제조단가가 올라가므로 경제성이 요구되는 일상물품에 적용하기는 한계가 있었다.However, polypropylene and polyethylene did not mix well, so it was difficult to mix them directly. Accordingly, Korean Patent Publication No. 1999-221913 provides a laminate film composed of a polyethylene film layer and a polypropylene film layer. However, such a laminate film has a limitation in that it is applicable to everyday products that require economic efficiency because the manufacturing method is complicated and the manufacturing process is difficult because of the complicated manufacturing process.
이에 본 발명은 종래의 어려움을 극복하고자 직접 폴리프로필렌과 폴리에틸렌이 잘 섞이게 하는 상용성을 부여하기 위하여 충진제 등을 사용하여 투명성이 요구되지 않는 소재로 사용하는 것과는 달리, 주재료로 사용되는 폴리프로필렌에 호적치의 폴리에틸렌, 특히 VLDPE를 가할 경우 세탁물 커버에서 원하는 물성개선 효과와 경제적 효과를 거둘 수 있음을 확인하고 본 발명을 완성하게 되었다.Therefore, the present invention is suitable for the polypropylene used as the main material, unlike the use of a material that does not require transparency using a filler or the like in order to give the compatibility to mix the polypropylene and polyethylene directly to overcome the conventional difficulties. Tooth polyethylene, in particular VLDPE was confirmed that the desired physical properties and economic effects can be achieved in the laundry cover to complete the present invention.
본 발명은 제조된 필름의 신장율, 특히 내한처리후 신장율을 높일 수 있는 폴리프로필렌 조성물과 적정한 성형온도에 의한 세탁물 커버용 폴리프로필렌 필름의 제조방법을 제공하는 것을 목적으로 한다.An object of the present invention is to provide a method for producing a polypropylene film for laundry cover by using a polypropylene composition and an appropriate molding temperature to increase the elongation of the produced film, in particular, the elongation after cold treatment.
특히, 본 발명은 폴리프로필렌과 폴리에틸렌의 물성상의 상호작용으로 공정이 간단하면서도 경제적으로 필름을 제조하는 것을 목적으로 한다.In particular, it is an object of the present invention to produce a film in a simple and economical process by the interaction of the physical properties of polypropylene and polyethylene.
또한, 본 발명은 추운 겨울에도 잘 찢어지지 않는 세탁물 커버용 폴리프로필렌 필름을 제공하는 것을 목적으로 한다.In addition, an object of the present invention is to provide a polypropylene film for laundry cover that is not easily torn even in cold winter.
도 1은 합성수지필름의 성형장치를 예시한 것이다.1 illustrates a molding apparatus of a synthetic resin film.
〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>
C : 실린더 H : 헤드C: Cylinder H: Head
D : 다이(dies) 10 : 1차 냉각장치(air)D: die 10: primary air conditioner
20 : 2차 냉각장치(water)20: secondary water cooling system
상기와 같은 목적을 달성하기 위하여 본 발명에서는 폴리프로필렌 91.38∼91.88 중량부, VLDPE 7.5∼8.5 중량부, 항블로킹제 0.22∼0.25 중량부, 대전방지제 0.25∼0.27 중량부 및 슬립성 향상제 0.15∼0.18 중량부를 배합하고 70∼75℃로 유지하면서 1시간 혼합하여 조성물을 얻은 다음, 통상의 필름성형장치에 상기의 조성물을 투입하되, 실린더의 온도 155 ∼165℃, 헤드의 온도 157 ∼165℃, 다이(Dies)의 온도 158 ∼164℃가 유지되도록 하여 압출성형하고 통상의 1차 및 2차 냉각처리과정을 통하여 생산되는 세탁물 커버용 폴리프로필렌 필름의 제조방법임을 그 특징으로 한다.In order to achieve the above object, in the present invention, 91.38 to 91.88 parts by weight of polypropylene, 7.5 to 8.5 parts by weight of VLDPE, 0.22 to 0.25 parts by weight of antiblocking agent, 0.25 to 0.27 parts by weight of antistatic agent, and 0.15 to 0.18 parts by weight of slip improver The mixture was mixed and maintained at 70 to 75 ° C. for 1 hour to obtain a composition, and then the composition was added to a conventional film forming apparatus, but the cylinder temperature was 155 to 165 ° C., the head temperature was 157 to 165 ° C., and the die ( Dies) to maintain a temperature of 158 ~ 164 ℃ is characterized in that the manufacturing method of the polypropylene film for laundry cover produced by extrusion molding and produced through the usual primary and secondary cooling treatment process.
이하, 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
상기한 바와 같이, 폴리프로필렌과 폴리에틸렌은 상용성이 적어 혼합이 용이하지 않으므로 이들의 혼합조성물로 필름을 제조하는 것은 어려운 일이다. 따라서, 투명성을 요구하는 필름이 아닌 일부 자동차 내장재 등에 사용되는 재료로 이용하기 위하여 상용성이 적은 폴리프로필렌과 폴리에틸렌에 충진제를 사용하여 폴리프로필렌의 단점을 보완하려는 기술 등에 그치고 있다.그러나, 본 발명은 여러 실험을 거쳐 폴리프로필렌에 폴리에틸렌, 특히 VLDPE를 극히 한정된 범위내에서 소량 첨가하면 필름의 성형성에도 문제가 없고 제조된 필름의 신장율, 특히 내한처리후 신장율을 크게 향상시킬 수 있음을 확인하게 되었다.As described above, since polypropylene and polyethylene are less compatible and difficult to mix, it is difficult to produce a film from these mixed compositions. Therefore, in order to use as a material used in some automobile interior materials and the like that is not a film requiring transparency, it is limited to a technique to compensate for the disadvantages of polypropylene by using a filler in polypropylene and polyethylene having low compatibility. After several experiments, it was confirmed that adding a small amount of polyethylene, especially VLDPE, to polypropylene within an extremely limited range has no problem in the formability of the film and can greatly improve the elongation rate of the manufactured film, especially after cold treatment.
본 발명에 따른 필름용 폴리프로필렌 조성물은 폴리프로필렌 90∼94 중량부와 VLDPE 6∼10 중량부 및 블로킹성·대전방지성·슬립성 등을 향상시키기 위한 소량의 첨가제 0.1∼3 중량부로 이루어진다.The polypropylene composition for a film according to the present invention comprises 90 to 94 parts by weight of polypropylene, 6 to 10 parts by weight of VLDPE, and 0.1 to 3 parts by weight of a small amount of additives for improving blocking property, antistatic property, slippage property, and the like.
본 조성물에 사용되는 항블로킹제(anti-blocking add)로는 합성수지필름의 제조에 일반적으로 사용되는 통상의 항블로킹제가 모두 사용될 수 있다. 바람직하게는 상기 항블로킹제는 이산화규소(SiO2), 탄산칼슘(CaCO3), 제올라이트 (ONa2O3Al3·2SiO2·2H2O) 및 이들의 혼합물 중에서 선택된다.As the anti-blocking add used in the composition, all of the conventional anti-blocking agents generally used in the production of the synthetic resin film may be used. Preferably, the antiblocking agent is selected from silicon dioxide (SiO 2 ), calcium carbonate (CaCO 3 ), zeolite (ONa 2 O 3 Al 3 · 2SiO 2 · 2H 2 O), and mixtures thereof.
대전방지제(anti-static add)로는 합성수지필름의 제조에 일반적으로 사용되는 통상의 대전방지제가 모두 사용될 수 있다. 바람직하게는 상기 대전방지제는 모노스테아린산 글리세롤(GMS: Glycerol mono stearate)이다.As an anti-static adder, all of the usual antistatic agents generally used in the production of the synthetic resin film may be used. Preferably, the antistatic agent is glycerol monostearate (GMS: Glycerol mono stearate).
슬립성 향상제(slip add)로는 합성수지필름의 제조에 일반적으로 사용되는 통상의 슬립성 향상제가 모두 사용될 수 있다. 바람직하게는 상기 슬립성 향상제는 C21H41CONH2(erucamide) 및/또는 C17H33CONH2이다.As a slip adder, any conventional slip enhancer generally used in the production of a synthetic resin film may be used. Preferably the slip enhancer is C 21 H 41 CONH 2 (erucamide) and / or C 17 H 33 CONH 2 .
이밖에도 본 발명의 조성물에는 물성을 개선하기 위해 합성수지필름의 제조에 사용되는 통상의 첨가제가 부가될 수 있다.In addition to the composition of the present invention may be added to the usual additives used in the manufacture of the synthetic resin film to improve the physical properties.
본 발명에 따른 세탁물 커버용 필름용 폴리프로필렌 조성물의 바람직한 일예는 폴리프로필렌 91.38∼91.88 중량부, VLDPE 7.5∼8.5 중량부, 항블로킹제 0.22∼0.25 중량부, 대전방지제 0.25∼0.27 중량부 및 슬립성 향상제 0.15∼0.18 중량부로 이루어진다.Preferred examples of the polypropylene composition for a laundry cover film according to the present invention are 91.38 to 91.88 parts by weight of polypropylene, 7.5 to 8.5 parts by weight of VLDPE, 0.22 to 0.25 parts by weight of an antiblocking agent, 0.25 to 0.27 parts by weight of an antistatic agent, and slip properties It consists of 0.15-0.18 weight part of improvers.
본 발명에 따른 조성물은 통상의 필름성형장치를 통해 필름으로 제조된다. 즉, 일반적으로 원료투입, 성형, 1차냉각(air) 및 2차냉각(water)을 거치는 압출성형과정을 통해 소정의 필름으로 제조된다. 도 1은 본 발명에 사용되는 통상의 필름성형장치를 예시한 것이다.The composition according to the invention is made into a film through a conventional film forming apparatus. That is, generally, a predetermined film is prepared through an extrusion process through raw material input, molding, primary air, and secondary water. 1 illustrates a conventional film forming apparatus used in the present invention.
본 발명의 조성물로 만든 필름은 기존의 폴리프로필렌 필름에 비해 신장율(KS M 3503)과 내한처리후 신장율(KS M 3503)이 모두 30% 정도 증가되어 확실한 물성개선 효과를 나타낸다.The film made of the composition of the present invention has a 30% increase in both the elongation rate (KS M 3503) and the elongation rate after cold treatment (KS M 3503) compared to the existing polypropylene film, showing a certain property improvement effect.
또한, 본 발명에서 상기의 조성물은 폴리에틸렌과의 혼합으로 필름제조시 온도조건이 기존의 폴리프로필렌 필름에 비해 훨씬 낮아지게 된다. 즉, 기존의 폴리프로필렌 필름이 도 1에 예시된 필름성형장치를 이용하여 필름제조시 통상 200℃ 이상의 온도조건, 구체적으로는 190∼210℃의 온도조건을 요하나, 본 발명에 따른 조성물로 필름을 제조할 경우 실린더(cylinder)의 온도조건은 155∼165℃, 헤드(head)의 온도조건은 157∼165℃, 다이(dies)의 온도조건은 158∼164℃로 되어 에너지 절감으로 인한 경제적인 효과가 있고 전체적인 생산효율도 좋아지게 된다.In addition, in the present invention, the composition is mixed with polyethylene, so that the temperature conditions when manufacturing the film is much lower than the conventional polypropylene film. That is, the conventional polypropylene film requires a temperature condition of 200 ° C. or higher, specifically 190 ° C. to 210 ° C., when the film is manufactured using the film forming apparatus illustrated in FIG. 1, but the film according to the present invention In case of manufacturing the temperature of cylinder, the temperature of cylinder is 155-165 ℃, the temperature of head is 157-165 ℃, and the temperature of die is 158-164 ℃. It is effective and improves the overall production efficiency.
이하, 실시예를 통해 본 발명을 보다 상세하게 설명한다. 그러나, 다음의실시예에 의해 본 발명이 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples. However, the present invention is not limited by the following examples.
실시예 1Example 1
(제조예)(Production example)
(1) 폴리프로필렌 91.5 중량부, VLDPE 8 중량부, 항블로킹제 0.25 중량부, 대전방지제 0.25 중량부, 슬립성 향상제 0.15 중량부를 배합하여 70∼75℃로 유지하면서 1시간 정도 혼합하여 본 발명에 따른 조성물 100g을 만들었다.(1) 91.5 parts by weight of polypropylene, 8 parts by weight of VLDPE, 0.25 parts by weight of an antiblocking agent, 0.25 parts by weight of an antistatic agent, and 0.15 parts by weight of a slip improver are mixed and mixed for about 1 hour while maintaining at 70 to 75 ° C. 100 g of the composition were prepared.
(2) 도 1에 도시된 필름성형장치에 (1)의 조성물을 투입하여 아래와 같은 조건으로 필름을 제조하였다.(2) The composition of (1) was added to the film forming apparatus shown in FIG. 1 to prepare a film under the following conditions.
조건Condition
1) 실린더 온도조건1) Cylinder temperature condition
C1 : 156℃C1: 156 ℃
C2 : 163℃C2: 163 ℃
C3 : 160℃C3: 160 ℃
2) 헤드 온도조건2) Head temperature condition
H1 : 160℃H1: 160 ℃
H2 : 164℃H2: 164 ℃
3) 다이(dies) 온도조건3) Die temperature condition
D1 : 158℃D1: 158 ° C
D2 : 162℃D2: 162 ℃
4) 1차냉각(에어)4) Primary cooling (air)
에어용량 : 10±2m3/min으로 송풍Air capacity: blowing a 10 ± 2m 3 / min
에어온도 : 28±5℃Air temperature: 28 ± 5 ℃
5) 2차냉각(물)5) Secondary cooling (water)
양 : 100ℓ±2ℓ/minVolume: 100ℓ ± 2ℓ / min
온도 : 25±5℃Temperature: 25 ± 5 ℃
6) 압출성형속도 및 양6) Extrusion molding speed and quantity
성형속도 : 850rpm±5rpm (65㎜기준)Molding speed: 850rpm ± 5rpm (65mm standard)
성형용량 : 0.55±0.01㎏/minMolding Capacity: 0.55 ± 0.01㎏ / min
실시예 2Example 2
물성테스트Physical property test
본 발명에 따른 조성물의 물성 개선효과를 알아보기 위해 실시예 1에서 제조한 본 발명의 필름과 원재료에 VLDPE를 첨가하지 않고 폴리프로필렌만을 사용하여 제조한 기존의 폴리프로필렌 필름(세탁물 커버용 필름)의 물성을 비교측정하였다. 실험은 인장강도(KS M 3503), 내한처리후 인장강도(KS M 3503), 신장률(KS M 3503), 내한처리후 신장률(KS M 3503), 인열강도(KS M 3503)의 5개 항목에 대해 실시하였다. 내한처리는 -10℃에서 10분간 처리하였다. 결과는 다음의 표 1과 같다.In order to examine the effect of improving the physical properties of the composition according to the present invention of the film of the present invention and the raw material of the conventional polypropylene film (laundry cover film) prepared using only polypropylene without adding VLDPE Physical properties were measured and compared. The test consists of five items: tensile strength (KS M 3503), tensile strength after cold treatment (KS M 3503), elongation (KS M 3503), elongation after cold treatment (KS M 3503), tear strength (KS M 3503). Was carried out. Cold-treatment was performed for 10 minutes at -10 ° C. The results are shown in Table 1 below.
상기 표 1로 부터 알 수 있는 바와 같이 VLDPE가 첨가된 실시예 1 필름은 세탁물커버로 사용되는 기존의 폴리프로필렌 필름에 비해 인장강도는 다소 낮아졌으나 신장율 및 내한처리후 신장율은 30% 가까이 크게 향상되었으며 인열강도도 약간 증가되었음을 확인할 수 있었다. 즉, 본 발명의 조성물로 제조한 필름이 인장강도면에서는 기존의 폴리프로필렌 필름에 비해 낮아졌다고 해도 이는 세탁물커버 등으로 사용시 전혀 지장을 주지 않는 충분한 범위의 인장강도이며, 이에 비해 폴리프로필렌 필름에서 그 동안 문제되었던 신장율 및 내한처리후 신장율은 크게 개선되었음을 알 수 있다.As can be seen from Table 1, the VLDPE-added Example 1 film was slightly lower in tensile strength than the conventional polypropylene film used as a laundry cover, but the elongation rate and the elongation rate after cold-treatment were greatly improved to about 30%. Tear strength was also slightly increased. That is, even if the film made of the composition of the present invention is lower than the conventional polypropylene film in terms of tensile strength, this is a sufficient range of tensile strength that does not interfere at all when used as a laundry cover. It can be seen that the elongation rate, which was a problem during the period, and the elongation rate after cold treatment were greatly improved.
본 발명은 종래 세탁물 커버용 폴리프로필렌 필름의 물성을 개선하여 신장율, 특히 내한처리후 신장율을 크게 높임으로써 추운 겨울철 실외에서도 잘 찢어지지 않는 세탁물 커버용 폴리프로필렌 필름을 얻을 수 있으며, 또한 폴리에틸렌과의 물성 보완으로 보다 생산효율이 좋은 경제성 있는 필름을 제조할 수 있다.The present invention improves the physical properties of the conventional polypropylene film for laundry cover to significantly increase the elongation rate, especially elongation after cold-treatment treatment to obtain a polypropylene film for laundry cover that does not tear easily in the cold winter outdoors, and also with physical properties of polyethylene As a supplement, it is possible to produce economical film with better production efficiency.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0014321A KR100367945B1 (en) | 2000-03-21 | 2000-03-21 | Producing method of polypropylene film for washing cover and film produced thereby |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0014321A KR100367945B1 (en) | 2000-03-21 | 2000-03-21 | Producing method of polypropylene film for washing cover and film produced thereby |
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| Publication Number | Publication Date |
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| KR20000036549A KR20000036549A (en) | 2000-07-05 |
| KR100367945B1 true KR100367945B1 (en) | 2003-01-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102091558B1 (en) * | 2019-10-10 | 2020-03-20 | 박정열 | Mulching film with improved insect repellent effect and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4965108A (en) * | 1985-09-11 | 1990-10-23 | First Brands Corporation | Low temperature impact and puncture resistant thermoplastic films and bags therefrom |
| EP0474376A2 (en) * | 1990-08-13 | 1992-03-11 | W.R. Grace & Co.-Conn. | Films of blends of polypropylene and ethylene copolymer |
| US5585420A (en) * | 1993-02-03 | 1996-12-17 | Basf Aktiengesellschaft | Method of producing scratch resistant polymer compositions |
| JPH10219042A (en) * | 1997-02-04 | 1998-08-18 | Showa Denko Kk | Resin composition |
| KR100194389B1 (en) * | 1996-03-19 | 1999-06-15 | 고다 시게노리 | Polypropylene film |
-
2000
- 2000-03-21 KR KR10-2000-0014321A patent/KR100367945B1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4965108A (en) * | 1985-09-11 | 1990-10-23 | First Brands Corporation | Low temperature impact and puncture resistant thermoplastic films and bags therefrom |
| EP0474376A2 (en) * | 1990-08-13 | 1992-03-11 | W.R. Grace & Co.-Conn. | Films of blends of polypropylene and ethylene copolymer |
| US5585420A (en) * | 1993-02-03 | 1996-12-17 | Basf Aktiengesellschaft | Method of producing scratch resistant polymer compositions |
| KR100194389B1 (en) * | 1996-03-19 | 1999-06-15 | 고다 시게노리 | Polypropylene film |
| JPH10219042A (en) * | 1997-02-04 | 1998-08-18 | Showa Denko Kk | Resin composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102091558B1 (en) * | 2019-10-10 | 2020-03-20 | 박정열 | Mulching film with improved insect repellent effect and manufacturing method thereof |
| WO2021071047A1 (en) * | 2019-10-10 | 2021-04-15 | 박정열 | Mulching film with improved insect-repellent effect and method for preparing same |
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| Publication number | Publication date |
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| KR20000036549A (en) | 2000-07-05 |
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