KR101884227B1 - Fabricated Film For Agiculture Using High―Tenacity Polyethylene Flat―Yarn - Google Patents

Fabricated Film For Agiculture Using High―Tenacity Polyethylene Flat―Yarn Download PDF

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KR101884227B1
KR101884227B1 KR1020160142906A KR20160142906A KR101884227B1 KR 101884227 B1 KR101884227 B1 KR 101884227B1 KR 1020160142906 A KR1020160142906 A KR 1020160142906A KR 20160142906 A KR20160142906 A KR 20160142906A KR 101884227 B1 KR101884227 B1 KR 101884227B1
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master batch
density polyethylene
light stabilizer
resin
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KR20180047139A (en
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김영성
서용운
김묘영
김동현
배수호
배만호
장명진
이준희
이재한
권준국
최효길
박경섭
유인호
코심쿠제 베크호조드
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(주)유니온화학
대한민국(농촌진흥청장)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
    • A01G2009/1461—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches containing woven structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2410/00—Agriculture-related articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Laminated Bodies (AREA)
  • Protection Of Plants (AREA)
  • Greenhouses (AREA)

Abstract

본 발명은 고밀도폴리에틸렌(HDPE)과 고강도폴리에틸렌(HSPE) 수지 복합물을 고연신함으로써 고강성을 유지하는 플렛얀으로 중간층을 형성하고, 열차단작용 및 방오성을 가지는 표면수지층과 무적기능과 흡습기능, 차열작용을 하는 이면수지층을 형성한 다기능성 고강도 직조필름에 관한 것이다.The present invention relates to a surface resin layer having heat shielding action and antifouling property, a non-invasive function, a hygroscopic function, and a high-strength polyethylene (HSPE) resin composite by forming a middle layer with flet yarn which maintains high rigidity by highly stretching high density polyethylene (HDPE) Functional high-strength woven fabric on which a back-side resin layer is formed.

Description

고강도 폴리에틸렌 플랫얀을 사용한 농업용 직조필름{Fabricated Film For Agiculture Using High―Tenacity Polyethylene Flat―Yarn}[0001] The present invention relates to a high-tenacity polyethylene flat yarn,

본 발명은 고밀도폴리에틸렌(HDPE)과 고강도폴리에틸렌(HSPE) 수지 복합물을 고연신함으로써 고강성을 유지하는 플렛얀으로 중간층을 형성하고, 열차단작용 및 방오성을 가지는 표면수지층과 무적기능과 흡습기능, 차열작용을 하는 이면수지층을 형성한 다기능성 고강도 직조필름에 관한 것이다.The present invention relates to a surface resin layer having heat shielding action and antifouling property, a non-invasive function, a hygroscopic function, and a high-strength polyethylene (HSPE) resin composite by forming a middle layer with flet yarn which maintains high rigidity by highly stretching high density polyethylene (HDPE) Functional high-strength woven fabric on which a back-side resin layer is formed.

최근 강원 영동지방에 내린 기록적인 폭설로 비닐하우스들은 맥없이 무너져 내렸는데, 무너진 비닐하우스는 철골구조를 가지고 있거나 유리온실 형태로 눈의 압력이 한 부분으로 응집이 일어나게 만드는 구조를 가지고 있기 때문에 눈의 저항을 이겨내지 못하고 붕괴가 일어났다.Due to the recent heavy snowfall in the Youngdong region of Gangwon Province, greenhouses have collapsed, and the collapsed greenhouses have a steel structure or a structure of glass greenhouse that causes the pressure of the snow to aggregate as a part, Failure to overcome the collapse occurred.

이러한 폭설에 의한 붕괴를 줄이는 방법으로 각기업에서는 폭설에 대비한 다양한 형태의 비닐하우스를 연구하였으며, 철골구조를 가지고 있지 않은 비닐하우스를 만드는데 개발을 중요시 하고 있다.As a way to reduce the collapse caused by heavy snowfall, each company studied various types of vinyl houses to prepare for heavy snowfall, and it is important to develop a vinyl house that does not have a steel structure.

이에 HDPE원료를 이용하여 방사를 하고 제직을 한 후 LLDPE코팅을 진행하는 직조필름을 이용하는 방법이 연구되고 있는데, 직조필름의 강성을 구현하기 위해 폴리에틸렌을 연신을 하여 강성을 상승시키는 방법으로 일본 데이진사가 "Kaypla"라는 제품을 출시하다가 독일 Nextrusion사로 이전하여 시판하고 있다. 이러한 HDPE를 이용한 직조필름을 사용한 방법을 이용할 경우 100%리싸이클이 가능하며, CO2 배출량이 적으며, 전량 수거를 하여 재사용이 가능함으로 환경적인 문제에 있어서 가장 큰 장점을 가지고 있으며, 가격적인 면에 있어서도 큰 장점을 가지고 있어 각광을 받고 있다. In order to realize the rigidity of the woven film, a method of stretching polyethylene to increase the stiffness of the woven film is proposed, which is a method of using a woven film to which LLDPE coating is performed after spinning and weaving using HDPE raw material. Has launched a product called "Kaypla", which has been transferred to German Nextrusion and is on the market. Using such a HDPE-based weaving film, it is possible to recycle 100%, CO 2 emission is low, and it can be recycled by collecting the whole quantity, which is the biggest advantage in environmental problems. It has a great advantage, and it is in the limelight.

이러한 직조필름으로 에어하우스 및 에어돔이라는 형태로 다양하게 개발되고 있는데, 상기 에어돔하우스는 철골구조없이 공기에 의해서 비닐하우스의 형태를 구성하므로 철골구조에 의해 압력이 가해지는 부분이 없으므로 강풍 및 폭설에 의한 자연재해에 있어서 피해를 줄일 수 있어 강원지역에 사용하기에 적합하다. 하지만 현재 에어돔하우스는 현존필름에 그물망을 설치하는 형태로 폭설시 그물망 사이사이에 눈이 쌓이게 되기 때문에 기존의 에어돔하우스의 장점을 부각시키지 못할 뿐만 아니라 결국에는 하우스의 붕괴가 일어나게 된다. 또한, 내부시설에 있어서도 냉각판 장치를 설치하므로 비용적인 부분이 발생하게 되어서 에어돔하우스의 장점을 부각하지 못하고 있다.Such a woven film has been developed in various forms such as an air house and an air dome. Since the air dome house constitutes the shape of a plastic house by the air without the steel structure, there is no part to be pressurized by the steel structure, It is suitable for use in Gangwon area. However, currently Airdome houses a network of existing film, so snow is piled up between the nettings during snowfall, which not only can not highlight the merits of the existing air dome house, but eventually the house collapse. In addition, since the cooling plate device is installed in the internal facilities, a cost part is generated, and the advantage of the air dome house can not be emphasized.

이에 풍속 60m/sec, 적설심 60cm에 견딜 수 있는 내구성 및 물성향상이 가능하며 원가 절감이 가능한 에어돔하우스용 직조필름의 개발이 요구되고 있다. 이러한 에어돔하우스용 폴리에틸렌 원단은 대규모로 제작하기 때문에 필히 웰딩을 해야 하지만, 폴리에틸렌은 표면 에너지값이 낮아서 접착성이 매우 어려운 단점이 있다. 이러한 접착성을 개선하기 위해 대한민국특허공개제2001-0024421호에서는 밀도가 0.94이하의 극저밀도폴리에틸렌을 접착성촉진제로 사용하여 필름을 제조하는 방법을 통해 노력을 하고 있으나 2축방향의 접착강도에는 문제점을 여전히 안고 있었다.Therefore, it is required to develop a woven film for an air dome house capable of improving the durability and physical properties to withstand an air velocity of 60 m / sec and a snow depth of 60 cm and cost reduction. Such polyethylene fabrics for air dome houses must be welded because they are manufactured on a large scale, but polyethylene has a disadvantage in that the surface energy value is low and the adhesion is very difficult. In order to improve such adhesiveness, Korean Patent Laid-Open Publication No. 2001-0024421 discloses an effort to produce a film by using an extremely low density polyethylene having a density of 0.94 or less as an adhesion promoter, .

대한민국특허공개제2001-0024421호(2001년03월26일 공개)Korean Patent Publication No. 2001-0024421 (published on Mar. 26, 2001)

그러므로 본 발명에서는 기존의 제조방법에 의한 폴리에틸렌 플렛얀으로서는 에어돔하우스나 건축용 원단으로서 갖춰야할 고강도값인 300N/cm을 얻을수 없으므로, 고밀도 폴리에틸렌수지와 고강도 폴리에틸렌 수지로 혼합된 수지를 10배 이상의 고배율로 연신한 고강도 폴리에틸렌 플렛얀으로 제직한 직조필름을 제공하고, 폴리에틸렌 수지의 낮은 표면에너지를 높임으로서 접착 온도를 낮추어 접착에 의한 접합 강도를 개선함과 동시에 열차단작용 및 방오성을 가지는 표면수지층과 무적기능과 흡습기능을 하는 이면수지층을 형성하여 다기능성 고강도 직조필름을 제공하는 것을 기술적과제로 한다.Therefore, in the present invention, as the polyethylene flat yarn according to the conventional manufacturing method, it is impossible to obtain a high strength value of 300 N / cm to be provided as an air dome house or a building fabric, so that a resin mixed with a high density polyethylene resin and a high- The present invention provides a woven fabric woven with stretched high strength polyethylene fleece, which improves the bonding strength by adhesion by lowering the bonding temperature by increasing the low surface energy of the polyethylene resin, and at the same time, The present invention provides a multi-functional high-strength woven film by forming a backside resin layer having a function and a hygroscopic function.

그러므로 본 발명에 의하면, 밀도 0.941~0.970인 고밀도폴리에틸렌수지(HDPE)와 중량평균 분자량이 120,000~150,000g/mol이고, 분자량 분포가 4.2~4.5인 고강도폴리에틸렌수지(HSPE)의 혼합수지 90~95중량%, 자외선흡수제마스터배치 2~4중량%, 광안정제마스터배치 2~4중량% 및 산화방지제 1~2중량%를 혼합하여 티다이 압출법에 의하여 폭 1.5~2.5㎜, 단사섬도 600~1200Denier로 제조한 고강도폴리에틸렌 플랫얀이 경사 및 위사가 되어 제직된 중간층;Therefore, according to the present invention, a high density polyethylene resin (HDPE) having a density of 0.941 to 0.970, a mixed resin of 90 to 95 weight of a high strength polyethylene resin (HSPE) having a weight average molecular weight of 120,000 to 150,000 g / mol and a molecular weight distribution of 4.2 to 4.5 2 to 4% by weight of the ultraviolet absorber master batch, 2 to 4% by weight of the light stabilizer master batch and 2 to 4% by weight of the antioxidant were mixed and extruded by the extrusion die method to a width of 1.5 to 2.5 mm and a single filament size of 600 to 1200 Denier An intermediate layer produced by weaving the high-strength polyethylene flat yarn in warp and weft;

상기 중간층의 표면에 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 4~5중량%, 자외선흡수제마스터배치 4~6중량% 및 산화방지제마스터배치 1~5중량%, 슬립제마스터배치 1~4중량%로 이루어진 표면수지층;The surface of the intermediate layer is coated with 80 to 90% by weight of low density polyethylene resin, 4 to 5% by weight of light stabilizer master batch, 4 to 6% by weight of ultraviolet light absorbent master batch and 1 to 5% by weight of antioxidant master batch, 4% by weight of a surface resin layer;

상기 중간층의 이면에 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 3~6중량%, 자외선흡수제마스터배치 2~6중량%, 산화방지제마스터배치 2~4중량% 및 무적제마스터배치 3~6중량%로 이루어진 이면수지층을 가지는 것을 특징으로 하는 고강도폴리에틸렌플랫얀을 사용한 농업용 직조필름이 제공된다.The intermediate layer contains 80 to 90% by weight of a low density polyethylene resin, 3 to 6% by weight of a light stabilizer master batch, 2 to 6% by weight of an ultraviolet absorbent master batch, 2 to 4% by weight of an antioxidant master batch, The present invention provides an agricultural weaving film using a high-strength polyethylene flat yarn having a back side resin layer composed of a high-density polyethylene flat yarn.

또한, 본 발명에 의하면 밀도 0.941~0.970인 고밀도 폴리에틸렌수지(HDPE)와 중량평균 분자량이 120,000~150,000g/mol이고, 분자량 분포가 4.2~4.5인 고강도폴리에틸렌수지(HSPE)의 혼합수지 90~95중량%, 자외선흡수제마스터배치 2~4중량%, 광안정제마스터배치 2~4중량% 및 산화방지제 1~2중량%를 혼합하여 티다이 압출법에 의하여 폭 1.5~2.5㎜, 단사섬도 600~1200Denier로 제조한 고강도폴리에틸렌 플랫얀이 경사 및 위사가 되어 제직된 중간층을 제직하는 단계;(HDPE) having a density of 0.941 to 0.970 and a high-strength polyethylene resin (HSPE) having a weight-average molecular weight of 120,000 to 150,000 g / mol and a molecular weight distribution of 4.2 to 4.5, 2 to 4% by weight of the ultraviolet absorber master batch, 2 to 4% by weight of the light stabilizer master batch and 2 to 4% by weight of the antioxidant were mixed and extruded by the extrusion die method to a width of 1.5 to 2.5 mm and a single filament size of 600 to 1200 Denier Weaving an intermediate layer produced by weaving a high-strength polyethylene flat yarn with warp and weft;

저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 4~5중량%, 자외선흡수제마스터배치 4~6중량% 및 산화방지제마스터배치 1~5중량%, 슬립제마스터배치 1~4중량%로 이루어진 표면코팅용 마스터배치를 용융하여 상기 중간층의 표면을 코팅하여 표면수지층을 형성하는 단계;A low density polyethylene resin 80 to 90% by weight, a light stabilizer master batch 4 to 5% by weight, an ultraviolet absorbent master batch 4 to 6% by weight and an antioxidant master batch 1 to 5% by weight and a slip master batch 1 to 4% by weight Melting the master batch for surface coating and coating the surface of the intermediate layer to form a surface resin layer;

저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 3~6중량%, 자외선흡수제마스터배치 2~6중량%, 산화방지제마스터배치 2~4중량% 및 무적제마스터배치 3~6중량%로 이루어진 이면코팅용 마스터배치를 용융하여 상기 중간층의 이면을 코팅하여 이면수지층을 형성하는 단계로 이루어지는 것을 특징으로 하는 고강도폴리에틸렌플랫얀을 사용한 농업용 직조필름의 제조방법이 제공된다.A backing consisting of 80 to 90% by weight of a low density polyethylene resin, 3 to 6% by weight of a light stabilizer master batch, 2 to 6% by weight of an ultraviolet absorbent master batch, 2 to 4% by weight of an antioxidant master batch and 3 to 6% And melting the coating masterbatch to coat the backside of the intermediate layer to form a backside resin layer. The method for manufacturing an agricultural weaving film using the high-strength polyethylene flat yarn is provided.

이하 본 발명을 보다 상세히 설명하기로 한다.Hereinafter, the present invention will be described in more detail.

본 발명의 고강도폴리에틸렌플랫얀을 사용한 농업용 직조필름은 표면수지층, 중간층, 이면수지층으로 이루어지는데, 보다 상세하게는 밀도 0.941~0.970인 고밀도 폴리에틸렌수지(HDPE)와 중량평균 분자량이 120,000~150,000g/mol이고, 분자량 분포가 4.2~4.5인 고강도폴리에틸렌수지(HSPE)의 혼합수지 90~95중량%, 자외선흡수제마스터배치 2~4중량%, 광안정제마스터배치 2~4중량% 및 산화방지제 1~2중량%를 혼합하여 티다이 압출법에 의하여 폭 1.5~2.5㎜, 단사섬도 600~1200Denier로 제조한 고강도폴리에틸렌 플랫얀이 경사 및 위사가 되어 제직된 중간층;The high-density polyethylene flat yarn of the present invention is composed of a surface resin layer, an intermediate layer and a back resin layer. More specifically, it comprises a high density polyethylene resin (HDPE) having a density of 0.941 to 0.970 and a weight average molecular weight of 120,000 to 150,000 g by weight of a master batch of a light stabilizer, 2 to 4% by weight of a light stabilizer master batch, and 1 to 4% by weight of an antioxidant, 2% by weight of a high tenacity polyethylene flat yarn prepared by extrusion of a titania composition having a width of 1.5 to 2.5 mm and a single yarn fineness of 600 to 1200 Denier;

상기 중간층의 표면에 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 4~5중량%, 자외선흡수제마스터배치 4~6중량% 및 산화방지제마스터배치 1~5중량%, 슬립제마스터배치 1~4중량%로 이루어진 표면수지층;The surface of the intermediate layer is coated with 80 to 90% by weight of low density polyethylene resin, 4 to 5% by weight of light stabilizer master batch, 4 to 6% by weight of ultraviolet light absorbent master batch and 1 to 5% by weight of antioxidant master batch, 4% by weight of a surface resin layer;

상기 중간층의 이면에 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 3~6중량%, 자외선흡수제마스터배치 2~6중량%, 산화방지제마스터배치 2~4중량% 및 무적제마스터배치 3~6중량%로 이루어진 이면수지층으로 이루어진다.The intermediate layer contains 80 to 90% by weight of a low density polyethylene resin, 3 to 6% by weight of a light stabilizer master batch, 2 to 6% by weight of an ultraviolet absorbent master batch, 2 to 4% by weight of an antioxidant master batch, % By weight of the resin layer.

본 발명의 농업용 직조필름은 유기계와 무기계가 혼합된 광안정제, 자외선흡수제 등의 표면수지층과 이면수지층의 코팅에 의해 장기 내후성, 유적성을 향상시키고 웰딩성을 향상시키기 위한 것으로서, 테이프상과 같이 절단된 고밀도 폴리에틸렌 플렛사가 경사 및 위사로 되어 제직된 중간층을 가지고, 상기 중간층의 표면에는 내후성을 가지는 표면수지층과 상기 중간층의 이면에 무적성과 친수성을 가지는 이면수지층을 가진다.INDUSTRIAL APPLICABILITY The agricultural weaving film of the present invention is for improving long term weatherability and survivability by coating a surface resin layer such as a light stabilizer and an ultraviolet absorbent mixed with an organic and an inorganic material and a back resin layer and improving the weldability, And a high-density polyethylene flat yarn which is cut together with a warp and weft. The surface of the intermediate layer has a surface resin layer having weatherability and a backside resin layer having no hydrophilicity on the back surface of the intermediate layer.

본 발명의 농업용 직조필름에서 상기 중간층의 고밀도 폴리에틸렌 플렛얀은In the agricultural weaving film of the present invention, the intermediate layer of the high density polyethylene flat yarn

밀도 0.941~0.970인 고밀도 폴리에틸렌수지(HDPE)와 중량평균 분자량이 120,000~150,000g/mol이고, 분자량 분포가 4.2~4.5인 고강도폴리에틸렌수지(HSPE)의 혼합수지 90~95중량%, 자외선흡수제마스터배치 2~4중량%, 광안정제마스터배치 2~4중량% 및 산화방지제 1~2중량%를 혼합하여 티다이 압출법에 의하여 폭 1.5~2.5㎜, 단사섬도 600~1200Denier로 제조한 고강도폴리에틸렌 플랫얀을 사용하여 열차단성과 강도 및 내후성을 만족할 수 있도록 할 수 있다. (HDPE) having a density of 0.941 to 0.970, 90 to 95% by weight of a mixed resin of a high strength polyethylene resin (HSPE) having a weight average molecular weight of 120,000 to 150,000 g / mol and a molecular weight distribution of 4.2 to 4.5, 2 to 4% by weight of a light stabilizer master batch, 2 to 4% by weight of a light stabilizer master batch, and 1 to 2% by weight of an antioxidant, Can be used to satisfy the heat insulation, strength and weatherability.

상기 고강도 폴리에틸렌 수지(HSPE)와 고밀도 폴리에틸렌 수지(HDPE)의 복합수지는 고연신성을 향상시키기 위한 것으로서 고강도폴리에틸렌 수지와 고밀도폴리에틸렌수지의 배합비는 중량비로 90:10 ~ 50:50이 연신측면에서 바람직하다. 상기 중간층을 형성하고 있는 고밀도 폴리에틸렌 플랫얀은 본 발명의 농업용 직조필름의 물리적인 성능을 담당하고 있는 중요한 부분이고 또한, 열차단성을 증대시키기 위해서 플랫얀을 제조할 때 자외선안정제 및 열차단안료를 혼합하여 제조한다.The composite resin of the high strength polyethylene resin (HSPE) and the high density polyethylene resin (HDPE) is intended to improve the high extensibility, and the blending ratio of the high strength polyethylene resin and the high density polyethylene resin is preferably 90:10 to 50:50 by weight in terms of stretching . The high-density polyethylene flat yarn forming the intermediate layer is an important part responsible for the physical performance of the agricultural weaving film of the present invention. In addition, when the flat yarn is produced in order to increase the heat resistance, the ultraviolet stabilizer and the heat- .

상기 표면수지층은 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 4~5중량%, 자외선흡수제마스터배치 4~6중량% 및 산화방지제마스터배치 1~5중량%, 슬립제마스터배치 1~4중량%로 이루어져 열차단작용 및 방오성을 향상시키는 작용을 하게 되는데, 광안정제마스터배치 4중량%미만이나 자외선흡수제마스터배치 4중량%미만에서는 내후성의 문제가 발생하며, 광안정제마스터배치 5중량%초과나 자외선흡수제마스터배치 6중량%를 초과하는 경우에는 백화현상 문제가 발생한다. 또한, 산화방지제마스터배치 1중량%미만에서는 열에 의한 산화방지 효과가 약한 문제가 발생하며, 5중량%를 초과하는 경우에는 색상이 변하는 문제가 발생한다. 슬립제마스터배치 1중량%미만에서는 정전기 문제가 발생하며, 4중량%를 초과하는 경우에는 점착 문제가 발생한다. 슬립제마스터배치는 10~20중량% 및 잔부로서 저밀도폴리에틸렌을 함유한다.Wherein the surface resin layer comprises 80 to 90% by weight of a low density polyethylene resin, 4 to 5% by weight of a light stabilizer master batch, 4 to 6% by weight of an ultraviolet absorbent master batch and 1 to 5% by weight of an antioxidant master batch, 4% by weight of the ultraviolet absorber, and 5% by weight of the ultraviolet light absorber masterbatch. When the ultraviolet absorber masterbatch is less than 4% by weight, If the ultraviolet absorber master batch is more than 6% by weight, whitening phenomenon occurs. If the content of the antioxidant master batch is less than 1% by weight, the effect of preventing oxidation due to heat is weak. If the content is more than 5% by weight, the problem of color change occurs. When the slip master batch is less than 1% by weight, a static electricity problem occurs. When the master batch is more than 4% by weight, a sticking problem occurs. The slip masterbatch contains 10 to 20% by weight of low density polyethylene as the remainder.

상기 이면수지층은 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 3~6중량%, 자외선흡수제마스터배치 2~6중량%, 산화방지제마스터배치 2~4중량% 및 무적제마스터배치 3~6중량%로 이루어져 무적기능과 흡습기능, 차열작용을 하게 되는데, 광안정제마스터배치 2중량%미만에서는 내후성이 좋지않은 문제가 발생하며, 6중량%를 초과하는 경우에는 투과율의 문제가 발생한다. 자외선흡수제마스터배치 2중량%미만에서는 내구성이 좋지않은 문제가 발생하며, 6중량%를 초과하는 경우에는 광투과질의 문제가 발생한다. 산화방지제마스터배치 2중량%미만에서는 열에 의한 산화방지 효과가 약한 문제가 발생하며, 4중량%를 초과하는 경우에는 색상이 변하는 문제가 발생한다. 또한, 무적제마스터배치 3중량%미만에서는 무적효과가 미약한 문제가 발생하며, 6중량%를 초과하는 경우에는 백화현상의 문제가 발생한다The backside resin layer comprises 80 to 90% by weight of a low density polyethylene resin, 3 to 6% by weight of a light stabilizer master batch, 2 to 6% by weight of an ultraviolet absorbent master batch, 2 to 4% by weight of an antioxidant master batch and 3 to 6 %. When the content of the light stabilizer is less than 2% by weight, the weatherability is not good. When the content is more than 6% by weight, the transmittance becomes problematic. When the ultraviolet absorber master batch is less than 2% by weight, a problem of poor durability occurs. When the ultraviolet absorber master batch exceeds 6% by weight, a problem of light transmission quality occurs. When the amount of the antioxidant master batch is less than 2% by weight, the problem of poor oxidation prevention effect due to heat is low, and when it exceeds 4% by weight, the problem of color change occurs. In addition, when the non-immobilizable master batch is less than 3% by weight, the invincible effect is insignificant. When the non-immobilizable master batch is more than 6% by weight,

상기 광안정제마스터배치는 광안정제 20~30중량% 및 잔부로서 저밀도폴리에틸렌을 함유하며, 자외선흡수제마스터배치는 자외선흡수제 20~40중량% 및 잔부로서 저밀도폴리에틸렌을 함유하며, 산화방지제마스터배치는 산화방지제 10~20중량% 및 잔부로서 저밀도폴리에틸렌을 함유하며, 슬립제마스터배치는 10~20중량% 및 잔부로서 저밀도폴리에틸렌을 함유하는 것이 바람직하다. The light stabilizer master batch contains 20 to 30% by weight of a light stabilizer and low density polyethylene as the remainder, the ultraviolet absorber master batch contains 20 to 40% by weight of an ultraviolet absorber and the remainder is low density polyethylene, 10 to 20% by weight of a low density polyethylene as a remainder, and 10 to 20% by weight of a slip master batch and a low density polyethylene as a remainder.

특히 상기 무적제마스터배치는 보헤마이트 3~6중량%, 소르비탄화합물 2~4% ,저밀도폴리에틸렌수지 90~95중량%로 이루어지는데, 상기 보헤마이트는 Al2O3가 80중량%, Na2O가 0.002중량%, NO3 0.1중량%를 함유하는 입자크기 40~100㎛의 무기입자로서 공기중의 수분을 흡습하는 역할을 하며, 무적제마스터배치에서 3~6중량%함유하는 것이 바람직하며, 상기 소르비탄 화합물은 소르비탄 에스테르와 에톡시레이트 소르비탄 에스테르의 혼합물을 사용하는 것이 무적성 발현측면에서 바람직하다. In particular, the mujeokje masterbatch boehmite 3-6% by weight, sorbitan compounds 2-4%, a low density polyethylene resin through interaction 90-95% by weight, wherein the boehmite is Al 2 O 3 of 80 wt% Na 2 O is 0.002% by weight, and the role of NO 3 0.1 as inorganic particles, the particle size of 40 ~ 100㎛ containing% by weight moisture the water in the air, it is preferable to contain 3-6% by weight in mujeokje masterbatch, the As the sorbitan compound, it is preferable to use a mixture of a sorbitan ester and an ethoxylate sorbitan ester from the viewpoint of manifesting no fitness.

상기 자외선 흡수제는 벤조페논계, 벤조트리아졸계, 살리실산에스테르계 자외선 흡수제 중 어느 하나이며, 광안정제는 HALS(Hindered Amine Light Stabilizer)계 광안정제이며, 산화방지제는 페놀계, 인계 및 유황계가 혼합된 산화방지제이고, 소르비탄화합물은 소르비탄 에스테르와 에톡시레이트 소르비탄 에스테르의 혼합물인 것이 바람직하다. 여기서 상기 표면수지층 및 이면수지층의 저밀도 폴리에틸렌 수지는 밀도 0.910~0.935인 것을 사용하는 것이 고온 압출 코팅 측면에서 바람직하다.The ultraviolet absorber is any one of benzophenone, benzotriazole, and salicylic acid ester ultraviolet absorbers. The light stabilizer is a Hindered Amine Light Stabilizer (HALS) light stabilizer. The antioxidant is a phenol, phosphorus, And the sorbitan compound is preferably a mixture of a sorbitan ester and an ethoxylate sorbitan ester. Here, the low-density polyethylene resin of the surface resin layer and the backside resin layer preferably has a density of 0.910 to 0.935 from the viewpoint of high-temperature extrusion coating.

본 발명의 농업용 직조필름의 제조방법은 중간층을 제직하는 단계와 상기 중간층의 표면을 코팅하여 표면수지층을 형성하는 단계와 상기 중간층의 이면을 코팅하여 이면수지층을 형성하는 단계로 이루어진다.The method for producing an agricultural weaving film according to the present invention comprises weaving an intermediate layer, coating a surface of the intermediate layer to form a surface resin layer, and coating the backside of the intermediate layer to form a backside resin layer.

우선, 중간층을 제직하는 단계에서는 밀도 0.941~0.970인 고밀도 폴리에틸렌수지(HDPE)와 중량평균 분자량이 120,000~150,000g/mol이고, 분자량 분포가 4.2~4.5인 고강도폴리에틸렌수지(HSPE)의 혼합수지 90~95중량%, 자외선흡수제마스터배치 2~4중량%, 광안정제마스터배치 2~4중량% 및 산화방지제 1~2중량%를 혼합하여 티다이 압출법에 의하여 폭 1.5~2.5, 단사섬도 600~1200Denier로 제조한 고강도폴리에틸렌 플랫얀이 경사 및 위사가 되어 제직된 중간층을 제직하는 것이 강성을 향상시키는데 좋다.First, in the step of weaving the intermediate layer, a high density polyethylene resin (HDPE) having a density of 0.941 to 0.970, a mixed resin of a high strength polyethylene resin (HSPE) having a weight average molecular weight of 120,000 to 150,000 g / mol and a molecular weight distribution of 4.2 to 4.5, A width of 1.5 to 2.5 and a single fiber fineness of 600 to 1200 Daenier by a Tie die extrusion method, and a mixture of the ultraviolet absorbent master batch 2 to 4 weight%, the light stabilizer master batch 2 to 4 weight% and the antioxidant 1 to 2 weight% It is preferable to weave the intermediate layer made of high-strength polyethylene flat yarn made of warp yarns and weft yarns to improve the rigidity.

상기 고밀도 폴리에틸렌 플렛얀을 제조하기 위해서 고밀도 폴리에틸렌 수지(HDPE)는 밀도 0.941~0.970인 것을 사용하는 것이 바람직하다. 상기 폭 및 두께의 플랫얀을 만드는데 백화현상이 발생하기 전까지 연신비를 5~10배로 조절하여야 하는 것이 좋다.In order to produce the high density polyethylene flat yarn, the high density polyethylene resin (HDPE) preferably has a density of 0.941 to 0.970. It is preferable to adjust the stretching ratio to 5 to 10 times before the whitening phenomenon occurs.

상기 플랫얀 형태로 만들어진 고밀도 폴리에틸렌 필름을 워터제트직기, 래피어직기 및 슐제직기등에 공급하여 평직조직으로 제직하는데, 밀도는 경사 및 위사모두 10~15본/인치, 폭은 75~160인치로 제직하는 것이 좋다.The high-density polyethylene film made in the form of the flat yarn is fed into a water jet loom, a rapier loom, a loom loom, and the like to be woven into a plain weave. The density is 10 to 15 bands / inch in both warp and weft and 75 to 160 inches in width. It is good to do.

본 발명에서는 제직시 중간층의 투광성 저하에 가장 크게 영향을 미칠 수 있는 위사 꼬임현상을 방지하기 위해 직기의 위입 부분에 꼬임 해사 장치인 피더를 장착하는 것이 바람직하다.In the present invention, it is preferable to mount a feeder, which is a twisted yarn feeding device, on the upper part of the loom in order to prevent a weft twist phenomenon which may greatly affect the light transmittance of the intermediate layer during weaving.

이후, 상기 제직된 중간층의 표면을 코팅하여 내후성과 방오성을 향상시키는 역할을 하는 표면수지층을 형성하는데, 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 4~6중량%, 자외선흡수제마스터배치 4~6중량% 및 산화방지제마스터배치 1~5중량%, 슬립제마스터배치 1~3중량%로 이루어진 표면코팅용 마스터배치를 용융하여 상기 중간층의 표면을 코팅하게 된다.Thereafter, the surface resin layer is formed to coat the surface of the woven intermediate layer to improve weather resistance and antifouling property. The surface resin layer is composed of 80 to 90% by weight of a low density polyethylene resin, 4 to 6% by weight of a light stabilizer master batch, 4 to 6% by weight of the antioxidant masterbatch, 1 to 5% by weight of the antioxidant masterbatch, and 1 to 3% by weight of the slip masterbatch are melted to coat the surface of the intermediate layer.

또한, 상기 중간층의 이면을 코팅하여 무적성과 차열성을 향상시키는 역할을 하는 이면수지층을 형성하게 되는데, 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 3~6중량%, 자외선흡수제마스터배치 2~6중량%, 산화방지제마스터배치 2~4중량% 및 무적제마스터배치 3~6중량%로 이루어진 이면코팅용 마스터배치를 용융하여 상기 중간층의 이면을 코팅하여 이면수지층을 형성한다.The backside resin layer is formed by coating the backside of the intermediate layer to improve the non-reactivity and heat resistance. The low-density polyethylene resin is 80 to 90% by weight, the light stabilizer master batch is 3 to 6% by weight, 2 to 6% by weight of an antioxidant masterbatch, 2 to 4% by weight of an antioxidant masterbatch and 3 to 6% by weight of an immiscible masterbatch are melted to form a backside resin layer by coating the backside of the intermediate layer.

그러므로 본 발명에 의하면, 고밀도폴리에틸렌(HDPE)과 고강도폴리에틸렌(HSPE) 수지 복합물을 고연신함으로써 고강성을 유지하는 플렛얀을 제조하고 열차단작용 및 방오성을 가지는 표면수지층과 무적기능과 흡습기능, 차열작용을 하는 이면수지층을 형성하여 다기능성 고강도 직조필름을 제공함으로써 대면적의 에어돔하우스나 건축용 막재로 사용할수 있다. 또한, 본 발명에 의하면, 폴리에틸렌 수지의 낮은 표면에너지를 높임으로서 접착 온도를 낮추어 접착에 의한 접합 강도가 개선 될수 있다. Therefore, according to the present invention, it is possible to manufacture a fleet which maintains high rigidity by highly stretching a high density polyethylene (HDPE) and a high strength polyethylene (HSPE) resin composite, to provide a surface resin layer having heat blocking effect and antifouling property, And a multi-functional high-strength woven film is formed by forming a backside resin layer which acts as a heat-shielding material, so that it can be used as a large-area air dome house or a building material. Further, according to the present invention, bonding strength by bonding can be improved by lowering the bonding temperature by increasing the low surface energy of the polyethylene resin.

도 1은 본 발명의 농업용 직조필름의 단면구조를 나타낸 모식도이다.
도 2는 본 발명의 농업용 직조필름을 10배연신한 단면의 500배 확대현미경사진이며,
도 3은 본 발명의 농업용 직조필름을 10배연신한 단면의 1500배 확대현미경사진이다.1 is a schematic view showing a cross-sectional structure of an agricultural weaving film of the present invention.
Fig. 2 is a 500x magnification micrograph of a section of the agricultural weaving film of the present invention,
Fig. 3 is a magnified photograph of a 1,500-magnified cross-section of a cross section of the agricultural weaving film of the present invention obtained by 10 times of stretching.

다음의 실시예에서는 본 발명의 농업용 직조필름을 제조하는 비한정적인 예시를 하고 있다.The following examples illustrate non-limiting examples of making the agricultural weaving films of the present invention.

[실시예 1][Example 1]

밀도 0.941~0.970인 고밀도 폴리에틸렌수지(HDPE)와 중량평균 분자량이 120,000~150,000g/mol이고, 분자량 분포가 4.2~4.5인 고강도폴리에틸렌수지(HSPE)의 혼합수지 90중량%, 자외선흡수제마스터배치 4중량%, 광안정제마스터배치 4중량% 및 산화방지제 2중량%를 혼합하여 연신비 10배로 티다이 압출법에 의하여 폭 2㎜, 단사섬도 1000Denier로 고강도폴리에틸렌 플랫얀을 제조하였다. 상기 플랫얀 형태로 만들어진 고밀도 폴리에틸렌 필름을 워터제트직기에 공급하여 평직조직으로 제직하는데, 밀도는 경사 및 위사모두 12본/인치, 폭은 75인치로 중간층을 제직하였다. 이후, 상기 제직된 중간층의 표면을 코팅하기 위하여 저밀도 폴리에틸렌 수지 90중량%, 광안정제마스터배치 4중량%, 자외선흡수제마스터배치 4중량% 및 산화방지제마스터배치 1중량%, 슬립제마스터배치 1중량%로 이루어진 표면코팅용 마스터배치를 용융하여 상기 중간층의 표면을 코팅하였다.A high density polyethylene resin (HDPE) having a density of 0.941 to 0.970, a mixed resin of a high strength polyethylene resin (HSPE) having a weight average molecular weight of 120,000 to 150,000 g / mol and a molecular weight distribution of 4.2 to 4.5, %, A light stabilizer master batch of 4% by weight, and an antioxidant of 2% by weight were mixed to prepare a high strength polyethylene flat yarn having a stretching ratio of 10 times and a width of 2 mm and a single yarn fineness of 1000 Denier by a Tie die extrusion method. The high-density polyethylene film made in the flat-yarn-like shape was fed to a water jet loom and woven into a plain weave. The density was woven into the intermediate layer at a density of 12 bands / inch and 75 inches in width. Then, to coat the surface of the woven intermediate layer, 90 wt% of low density polyethylene resin, 4 wt% of light stabilizer master batch, 4 wt% of ultraviolet light absorbent master batch and 1 wt% of antioxidant master batch, 1 wt% of slip master batch, Was melted to coat the surface of the intermediate layer.

또한, 상기 중간층의 이면을 코팅하기위해 저밀도 폴리에틸렌 수지 86중량%, 광안정제마스터배치 4중량%, 자외선흡수제마스터배치 4중량%, 산화방지제마스터배치 2중량% 및 무적제마스터배치(보헤마이트 4중량%, 소르비탄화합물 4중량% , 저밀도 폴리에틸렌 수지 92중량%) 4중량%로 이루어진 이면코팅용 마스터배치를 용융하여 상기 중간층의 이면을 코팅하여 이면수지층을 형성하였다.In order to coat the back surface of the intermediate layer, 86 wt% of a low density polyethylene resin, 4 wt% of a light stabilizer master batch, 4 wt% of an ultraviolet absorbent master batch, 2 wt% of an antioxidant master batch and 4 wt% , 4% by weight of a sorbitan compound and 92% by weight of a low-density polyethylene resin) was melted to coat the backside of the intermediate layer to form a backside resin layer.

제조된 농업용 직조필름의 물성을 측정하여 아래 표 1에 나타내었다.The properties of the fabricated agricultural woven films were measured and are shown in Table 1 below.

주요 성능Key Performance 단 위unit 실시예 1Example 1 시험규격Test Specification 1. 인장강도1. Tensile strength N/5cmN / 5cm 2,800 2,800 KS K 0521KS K 0521 2. 파열강도2. Burst strength NN 1,4691,469 KS K 0350KS K 0350 3. 광투과율3. Light Transmittance %% 8282 농촌진흥청 연구조사분석기준,
ASTM E 424-71Rural Development Administration,
ASTM E 424-71 4. 봉합강도4. Sealing strength NN 1,9001,900 KS K ISO 13935-2KS K ISO 13935-2 5. 내후성(2,000시간)5. Weatherability (2,000 hours) %% 50이상Over 50 KSM3505:2010,
ASTMG154:2006KSM3505: 2010,
ASTM G154: 2006

1 : 중간층 2 : 표면수지층
3 : 이면수지층1: intermediate layer 2: surface resin layer
3:

Claims (4)

밀도 0.941~0.970인 고밀도 폴리에틸렌수지와 중량평균 분자량이 120,000~150,000g/mol이고, 분자량 분포가 4.2~4.5인 고강도폴리에틸렌수지(HSPE)의 혼합수지 90~95중량%, 자외선흡수제마스터배치 2~4중량%, 광안정제마스터배치 2~4중량% 및 산화방지제 1~2중량%를 혼합하여 티다이 압출법에 의하여 폭 1.5~2.5㎜, 단사섬도 600~1200Denier로 제조한 고강도폴리에틸렌 플랫얀이 경사 및 위사가 되어 제직된 중간층;
상기 중간층의 표면에 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 4~5중량%, 자외선흡수제마스터배치 4~6중량% 및 산화방지제마스터배치 1~5중량%, 슬립제마스터배치 1~4중량%로 이루어진 표면수지층;
상기 중간층의 이면에 저밀도 폴리에틸렌 수지 80~90중량%, 광안정제마스터배치 3~6중량%, 자외선흡수제마스터배치 2~6중량%, 산화방지제마스터배치 2~4중량% 및 무적제마스터배치 3~6중량%로 이루어진 이면수지층을 가지는 것을 특징으로 하는 고강도폴리에틸렌플랫얀을 사용한 농업용 직조필름.A high-density polyethylene resin having a density of 0.941 to 0.970 and a high-strength polyethylene resin (HSPE) having a weight average molecular weight of 120,000 to 150,000 g / mol and a molecular weight distribution of 4.2 to 4.5, A high-strength polyethylene flat yarn having a width of 1.5 to 2.5 mm and a monofilament fineness of 600 to 1200 Denier by a Tie die extrusion method is mixed with a mixture of 2 to 4% by weight of a light stabilizer master batch, 2 to 4% by weight of a light stabilizer master batch, and 1 to 2% An intermediate layer woven as weft;
The surface of the intermediate layer is coated with 80 to 90% by weight of low density polyethylene resin, 4 to 5% by weight of light stabilizer master batch, 4 to 6% by weight of ultraviolet light absorbent master batch and 1 to 5% by weight of antioxidant master batch, 4% by weight of a surface resin layer;
The intermediate layer contains 80 to 90% by weight of low density polyethylene resin, 3 to 6% by weight of light stabilizer master batch, 2 to 6% by weight of ultraviolet absorbent master batch, 2 to 4% by weight of antioxidant master batch and 3 to 6 By weight of a high-strength polyethylene flat yarn. 제 1항에 있어서,
상기 광안정제마스터배치는 광안정제 20~30중량% 및 잔부로서 저밀도폴리에틸렌을 함유하며, 자외선흡수제마스터배치는 자외선흡수제 10~20중량% 및 잔부로서 저밀도폴리에틸렌을 함유하며, 산화방지제마스터배치는 산화방지제 10~20중량% 및 잔부로서 저밀도폴리에틸렌을 함유하며, 슬립제마스터배치는 슬립제 10~20중량% 및 잔부로서 저밀도폴리에틸렌을 함유하며, 무적제마스터배치는 보헤마이트 3~6중량%, 소르비탄화합물 3~5중량% 및 잔부로서 저밀도폴리에틸렌을 함유하는 것을 특징으로 하는 고강도폴리에틸렌플랫얀을 사용한 농업용 직조필름.The method according to claim 1,
The light stabilizer master batch contains 20 to 30% by weight of a light stabilizer and low density polyethylene as the remainder, the ultraviolet absorber master batch contains 10 to 20% by weight of an ultraviolet absorber and the remainder is low density polyethylene, 10 to 20% by weight of a low density polyethylene as a remainder and 10 to 20% by weight of a slip masterbatch as a remainder and low density polyethylene as a remainder, wherein the non-defective master batch contains 3 to 6% by weight of boehmite, 3 to 5% by weight of a high-density polyethylene flat yarn and a low-density polyethylene as a remainder. 제 2항에 있어서,
상기 자외선 흡수제는 벤조페논계, 벤조트리아졸계, 살리실산에스테르계 자외선 흡수제 중 어느 하나이며, 광안정제는 HALS(Hindered Amine Light Stabilizer)계 광안정제이며, 산화방지제는 페놀계, 인계 및 유황계가 혼합된 산화방지제이고, 소르비탄화합물은 소르비탄 에스테르와 에톡시레이트 소르비탄 에스테르의 혼합물인 것을 특징으로 하는 고강도폴리에틸렌플랫얀을 사용한 농업용 직조필름.3. The method of claim 2,
The ultraviolet absorber is any one of benzophenone, benzotriazole, and salicylic ester ultraviolet absorbers. The light stabilizer is a Hindered Amine Light Stabilizer (HALS) light stabilizer. The antioxidant is a phenol, phosphorus, Wherein the sorbitan compound is a mixture of a sorbitan ester and an ethoxylate sorbitan ester. 삭제delete
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KR102657889B1 (en) 2023-12-20 2024-04-16 메리디안글로벌 주식회사 Manufacturing Method for Flat Type Yarn with Two Shrinkage Mixed Fiber

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KR102545009B1 (en) 2022-07-20 2023-06-20 송준호 Mulching film for agricultural use
KR102657889B1 (en) 2023-12-20 2024-04-16 메리디안글로벌 주식회사 Manufacturing Method for Flat Type Yarn with Two Shrinkage Mixed Fiber

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