KR101831240B1 - Heat insulation sheet for vinyl house - Google Patents

Heat insulation sheet for vinyl house Download PDF

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KR101831240B1
KR101831240B1 KR1020160035072A KR20160035072A KR101831240B1 KR 101831240 B1 KR101831240 B1 KR 101831240B1 KR 1020160035072 A KR1020160035072 A KR 1020160035072A KR 20160035072 A KR20160035072 A KR 20160035072A KR 101831240 B1 KR101831240 B1 KR 101831240B1
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South Korea
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vinyl house
heat insulating
weight
density polyethylene
low density
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KR1020160035072A
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KR20170110820A (en
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장진형
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주식회사 에어로테크
농업회사법인 (주)에어그린테크
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14Greenhouses
    • A01G9/1438Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14Greenhouses
    • A01G9/1469Greenhouses with double or multiple walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
    • B32B3/20Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side of hollow pieces, e.g. tubes; of pieces with channels or cavities
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00Layers arrangement
    • B32B2250/24All layers being polymeric
    • B32B2250/242All polymers belonging to those covered by group B32B27/32
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/304Insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00Polyalkenes
    • B32B2323/04Polyethylene
    • B32B2323/046LDPE, i.e. low density polyethylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2410/00Agriculture-related articles
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25Greenhouse technology, e.g. cooling systems therefor

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

Abstract

본 발명은 비닐하우스 외부를 향하는 상부층(1), 다수개의 에어캡(4)이 형성되어 있는 중간층(2), 및 비닐하우스의 내부를 향하는 하부층(3)을 포함하는 비닐 하우스용 단열시트에 있어서, 상기 상부층(1)은 선형저밀도 폴리에틸렌(LLDPE) 및 저밀도 폴리에틸렌(LDPE)을 포함하고, 상기 중간층(2)은 저밀도 폴리에틸렌(LDPE) 및 에틸아세테이트(EA)을 포함하고, 상기 하부층(3)은 저밀도 폴리에틸렌(LDPE) 및 에틸렌비닐아세테이트(EVA)을 포함하여, 둘 이상의 비닐 하우스용 단열시트를 각각 열융착하는 경우, 우수한 접착강도를 갖고, 우수한 단열특성을 유지할 수 있는 비닐 하우스용 단열시트에 관한 것이다.A heat insulating sheet for a vinyl house comprising an upper layer (1) directed toward the outside of a vinyl house, an intermediate layer (2) formed with a plurality of air caps (4), and a lower layer (LDPE) and ethyl acetate (EA), and the lower layer (3) comprises a low density polyethylene (LLDPE) and a low density polyethylene (EN) Disclosed is a heat insulating sheet for a vinyl house which has excellent adhesive strength and can maintain excellent heat insulating properties when two or more heat insulating sheets for vinyl houses are thermally fused, including low density polyethylene (LDPE) and ethylene vinyl acetate will be.

Description

비닐 하우스용 단열시트{HEAT INSULATION SHEET FOR VINYL HOUSE}{HEAT INSULATION SHEET FOR VINYL HOUSE}

본 발명은 비닐하우스의 외부를 향하는 상부층(1), 다수개의 에어캡(4)이 형성되어 있는 중간층(2), 및 비닐하우스의 내부를 향하는 하부층(3)을 포함하는 비닐 하우스용 단열시트에 있어서, 상기 상부층(1)은 선형저밀도 폴리에틸렌(LLDPE) 및 저밀도 폴리에틸렌(LDPE)을 포함하고, 상기 중간층(2)은 저밀도 폴리에틸렌(LDPE) 및 에틸아세테이트(EA)을 포함하고, 상기 하부층(3)은 저밀도 폴리에틸렌(LDPE) 및 에틸렌비닐아세테이트(EVA)을 포함하는 비닐 하우스용 단열시트에 관한 것이다.A heat insulating sheet for a vinyl house comprising an upper layer (1) facing the outside of the vinyl house, an intermediate layer (2) having a plurality of air caps (4) and a lower layer (3) facing the inside of the vinyl house Wherein the upper layer comprises linear low density polyethylene (LLDPE) and low density polyethylene (LDPE), the intermediate layer comprises low density polyethylene (LDPE) and ethyl acetate (EA) Relates to a heat insulating sheet for a vinyl house comprising low density polyethylene (LDPE) and ethylene vinyl acetate (EVA).

일반적으로 에어캡(air cap)을 포함하는 비닐 하우스용 단열시트는 기포가 들어간 필름의 일종으로 원래는 미국의 Sealed Air Corporation 회사 제품에 대하여 붙여진 이름이지만 최근에는 기포가 들어간 필름의 대명사처럼 쓰이고 있다. Generally, a heat insulating sheet for a vinyl house including an air cap is a type of film containing bubbles, originally a name given to a product manufactured by Sealed Air Corporation of the United States, but recently it is used as a pronoun of a film containing bubbles.

이러한 비닐 하우스용 단열시트의 일반적인 구조는 2장의 폴리에틸렌(polyethylene) 필름을 포개어 그 사이에 공기의 거품을 가둔 것이다. 이러한 비닐 하우스용 단열시트는 완충을 필요로 하는 각종 제품의 포장용뿐만 아니라, 우수한 단열효과에 의해 보온 및 보냉용으로 널리 사용되고 있다. The general structure of such a heat insulating sheet for a vinyl house is that two sheets of polyethylene film are stacked and air bubbles are put therebetween. Such a heat insulating sheet for a vinyl house has been widely used not only for packaging various products requiring buffering but also for keeping warm and cold by excellent heat insulating effect.

특히, 근래에는 상기한 비닐 하우스용 단열시트가 각종 농작물을 재배하는 비닐하우스에 설치되어 널리 사용되고 있다. 즉, 비닐 하우스용 단열시트은 단열성이 우수하여 비닐하우스에서 키우는 농작물에 필요한 온도를 일정하게 유지할 수 있는 보온 효과를 제공할 수 있다. Particularly, in recent years, the above-mentioned heat insulating sheet for a vinyl house has been widely used in a vinyl house where various crops are grown. That is, the heat insulating sheet for a vinyl house is excellent in heat insulation and can provide a warming effect that can maintain the temperature required for a crop grown in a vinyl house at a constant level.

이러한 비닐 하우스용 단열시트는 긴 길이와 규격화된 폭을 갖도록 제조되기 때문에, 비닐하우스에 설치시 길이 방향으로 일부분을 중첩 배치한 상태에서 중첩 부위를 접착제를 매개로 이음 접착한 후 비닐하우스를 완전히 감싸도록 설치하였다. 그러나, 이러한 종래의 비닐하우스에 설치되는 단열시트의 중첩 부위는 계절에 의한 온도 변화에 따라 쉽게 떨어지게 되는 문제점이 있었다. 즉, 단열시트의 중첩 부위를 이음 접착하는 접착제는 계절에 의해 반복으로 변화되는 온도의 영향을 받아 접착력이 쉽게 상실됨으로써, 중첩 부위에 대한 견고한 접착력을 유지할 수 없게 되는 문제점이 있었다.Since such a heat insulating sheet for a vinyl house is manufactured so as to have a long length and a standardized width, when a part of the heat insulating sheet is placed in a longitudinal direction in a vinyl house, the overlapped portion is adhered via an adhesive agent, Respectively. However, there has been a problem that the overlapping portion of the heat insulating sheet provided in such a conventional vinyl house is easily detached according to the seasonal temperature change. That is, the adhesive that bonds the overlapped portion of the heat insulating sheet is affected by the temperature repeatedly changed by the season, and the adhesive force is easily lost, so that there is a problem that the adhesive strength to the overlapping portion can not be maintained.

또한, 비닐 하우스용 단열시트를 열융착으로 접착하는 경우에도 기포가 들어간 필름을 포함하는 다층 구조를 열융착해야 하는 것이기 때문에 열융착 후, 중첩부위의 강도가 떨어지거나, 단열특성이 저하되는 문제점이 있었다.Further, even when the heat insulating sheet for a greenhouse is adhered by thermal fusion, the multilayer structure including the film containing bubbles must be heat-sealed, so that the strength of the overlapping region is lowered or the adiabatic property is lowered after the heat- there was.

대한민국 공개특허공보 제10-2013-0072230호(2013년 07월 01일, 공개Korean Patent Laid-Open Publication No. 10-2013-0072230 (Jul. 01, 2013) 대한민국 공개특허공보 제10-2015-0078553호(2015년 07월 08일, 공개)Korean Patent Publication No. 10-2015-0078553 (published on Jul. 08, 2015) 대한민국 공개특허공보 제10-2015-0087726호(2015년 07월 30일, 공개)Korean Patent Publication No. 10-2015-0087726 (published on July 30, 2015)

본 발명의 일 구현예는 크기가 규격화된 수 개의 비닐 하우스용 단열시트를 중첩하여 접착시, 우수한 단열 특성을 유지하면서도 접착강도가 우수한 비닐 하우스용 단열시트를 제공하는 것이다.An embodiment of the present invention is to provide a heat insulating sheet for a vinyl house having excellent adhesive strength while adhering excellent heat insulating properties when a plurality of size-normalized heat insulating sheets for a vinyl house are laminated and bonded.

본 발명의 일 구현예는 비닐하우스의 외부를 향하는 상부층(1), 다수개의 에어캡(4)이 형성되어 있는 중간층(2), 및 비닐하우스의 내부를 향하는 하부층(3)을 포함하는 비닐 하우스용 단열시트에 있어서, 상기 상부층(1)은 선형저밀도 폴리에틸렌(LLDPE) 70 내지 90 중량% 및 저밀도 폴리에틸렌(LDPE) 10 내지 30 중량%를 포함하고, 상기 중간층(2)은 저밀도 폴리에틸렌(LDPE) 40 내지 60 중량% 및 에틸아세테이트(EA) 40 내지 60 중량%를 포함하고, 상기 하부층(3)은 저밀도 폴리에틸렌(LDPE) 40 내지 60 중량% 및 에틸렌비닐아세테이트(EVA) 40 내지 60 중량%를 포함하는 비닐 하우스용 단열시트를 제공한다.An embodiment of the present invention is a plastic greenhouse comprising an upper layer 1 facing the outside of a vinyl house, an intermediate layer 2 having a plurality of air caps 4 formed thereon, and a lower layer 3 facing the inside of the vinyl house. Wherein the upper layer comprises 70 to 90% by weight of a linear low density polyethylene (LLDPE) and 10 to 30% by weight of a low density polyethylene (LDPE) and the intermediate layer (2) comprises a low density polyethylene (LDPE) (EA) and 40 to 60% by weight of ethyl acetate (EVA), wherein the lower layer (3) comprises 40 to 60% by weight of low density polyethylene (LDPE) and 40 to 60% by weight of ethylene vinyl acetate A heat insulating sheet for a vinyl house is provided.

상기 비닐 하우스용 단열시트는 크기가 규격화된 수 개의 비닐 하우스용 단열시트를 각각 열융착하여 제조되는 것으로, 상기 열융착은 각각의 비닐 하우스용 단열시트의 하부층(3)과 하부층(3')이 마주보도록 중첩 고정한 후, 열풍에 의하여 용융된 상기 중첩부를 가압하고 접합함으로써 수행될 수 있다.The heat insulating sheet for a vinyl house is manufactured by thermally fusing several heat-insulating sheets for standardized vinyl houses, and the heat-sealing is performed such that the lower layer 3 and the lower layer 3 'of the heat- By superposing them so as to face each other, and then pressing and joining the superimposed portions melted by hot air.

상기 선형 저밀도 폴리에틸렌의 중량평균분자량(Mw)은 9만 내지 11만이고, 분자량분포도(GPC)는 2.5 내지 2.8인 것을 사용할 수 있다.The linear low density polyethylene may have a weight average molecular weight (Mw) of 90,000 to 110,000 and a molecular weight distribution (GPC) of 2.5 to 2.8.

상기 에틸렌비닐아세테이트(EVA)는 비닐아세테이트(VA)의 함량이 5 내지 10 중량%인 것일 수 있다.The ethylene vinyl acetate (EVA) may have a content of vinyl acetate (VA) of 5 to 10% by weight.

본 발명의 일 구현예에 따른 비닐 하우스용 단열시트는 둘 이상의 비닐 하우스용 단열시트를 각각 열융착하는 경우, 우수한 접착강도를 갖고, 우수한 단열특성을 유지할 수 있는 효과가 있다. 특히, 접착 후, 접착부의 일체성이 뛰어나, 접착강도가 우수할 뿐만 아니라, 우수한 단열 특성을 유지할 수 있어, 겨울에는 보온효과를 얻을 수 있고, 여름에는 보냉효과를 얻을 수 있는 효과가 있다. The heat insulating sheet for a vinyl house according to one embodiment of the present invention has an excellent adhesive strength and an excellent heat insulating property when thermally fusing two or more heat insulating sheets for a vinyl house. Particularly, after the bonding, the bonding portion is excellent in the integrity of the bonding portion, and not only the bonding strength is excellent, but also the excellent heat insulating property can be maintained, so that a warming effect can be obtained in winter and a cooling effect in summer can be obtained.

도 1은 본 발명의 일 구현예에 따른 비닐 하우스용 단열시트의 사시도를 나타낸 것이다.
도 2는 도 1에 도시된 A-A의 단면도를 나타낸 것이다.
도 3은 두 개의 비닐 하우스용 단열시트가 중첩 고정된 모습의 단면도를 나타낸 것이다.
1 is a perspective view of a heat insulating sheet for a greenhouse according to an embodiment of the present invention.
Fig. 2 shows a cross-sectional view of AA shown in Fig.
Fig. 3 is a cross-sectional view showing a state in which two heat insulating sheets for a vinyl house are overlapped and fixed.

이하, 본 발명의 구현예를 상세히 설명하기로 한다. 다만, 이는 예시로서 제시되는 것으로, 이에 의해 본 발명이 제한되지는 않으며 본 발명은 후술할 청구범위의 범주에 의해 정의될 뿐이다.Hereinafter, embodiments of the present invention will be described in detail. However, it should be understood that the present invention is not limited thereto, and the present invention is only defined by the scope of the following claims.

본 발명의 일 구현예는 비닐하우스의 외부를 향하는 상부층(1), 다수개의 에어캡(4)이 형성되어 있는 중간층(2), 및 비닐하우스의 내부를 향하는 하부층(3)을 포함하는 비닐 하우스용 단열시트에 있어서, 상기 상부층(1)은 선형저밀도 폴리에틸렌(LLDPE) 70 내지 90 중량% 및 저밀도 폴리에틸렌(LDPE) 10 내지 30 중량%를 포함하고, 상기 중간층(2)은 저밀도 폴리에틸렌(LDPE) 40 내지 60 중량% 및 에틸아세테이트(EA) 40 내지 60 중량%를 포함하고, 상기 하부층(3)은 저밀도 폴리에틸렌(LDPE) 40 내지 60 중량% 및 에틸렌비닐아세테이트(EVA) 40 내지 60 중량%를 포함하는 비닐 하우스용 단열시트를 제공한다. An embodiment of the present invention is a plastic greenhouse comprising an upper layer 1 facing the outside of a vinyl house, an intermediate layer 2 having a plurality of air caps 4 formed thereon, and a lower layer 3 facing the inside of the vinyl house. Wherein the upper layer comprises 70 to 90% by weight of a linear low density polyethylene (LLDPE) and 10 to 30% by weight of a low density polyethylene (LDPE) and the intermediate layer (2) comprises a low density polyethylene (LDPE) (EA) and 40 to 60% by weight of ethyl acetate (EVA), wherein the lower layer (3) comprises 40 to 60% by weight of low density polyethylene (LDPE) and 40 to 60% by weight of ethylene vinyl acetate A heat insulating sheet for a vinyl house is provided.

이러한 본 발명의 일 구현예에 따른 비닐 하우스용 단열시트의 사시도는 도 1에 나타낸 바와 같다. 또한, 상기 도 1에 도시된 A-A의 단면도는 도 2에 나타낸 바와 같다.A perspective view of the heat insulating sheet for a vinyl house according to an embodiment of the present invention is shown in Fig. 2 is a cross-sectional view taken along the line A-A shown in Fig.

본 발명의 일 구현예에 따른 비닐 하우스용 단열시트는 둘 이상의 비닐 하우스용 단열시트를 각각 열융착하는 경우, 우수한 접착강도를 갖고, 우수한 단열특성을 유지할 수 있는 효과가 있다. The heat insulating sheet for a vinyl house according to one embodiment of the present invention has an excellent adhesive strength and an excellent heat insulating property when thermally fusing two or more heat insulating sheets for a vinyl house.

따라서 크기가 규격화된 수 개의 비닐 하우스용 단열시트를 각각 열융착하는 경우뿐만 아니라, 물리적인 충격에 의하여 시트에 구멍이 생긴 경우, 이를 보수하기 위하여, 열융착하는 경우에도 매우 유용한 장점이 있다.Therefore, it is very advantageous not only when thermally fusing several heat insulating sheets for standardized vinyl houses, but also when thermally fusing a hole in a sheet due to a physical impact, in order to repair it.

또한, 상기 비닐 하우스용 단열시트는 열융착으로 용이하고 견고하게 접착할 수 있기 때문에 히팅롤러 뿐만 아니라, 열풍에 의해서도 용이하게 수행될 수 있다. 특히, 물리적인 충격에 의하여 시트에 구멍이 생긴 경우에 이를 보수하기 위하여, 열융착하는 경우에 열풍을 이용하여 용이하고 견고하게 보수할 수 있는 장점이 있다. In addition, since the heat insulating sheet for a vinyl house can be easily and firmly adhered by heat fusion, it can be easily performed not only by a heating roller but also by hot air. Particularly, in the case where holes are formed in the sheet due to a physical impact, there is an advantage that the sheet can be easily and firmly repaired using hot air in the case of heat-sealing.

특히, 상기 비닐 하우스용 단열시트는 크기가 규격화된 수 개의 비닐 하우스용 단열시트를 각각 열융착하여 제조되는 것으로, 상기 열융착은 각각의 비닐 하우스용 단열시트의 하부층(3)과 하부층(3')이 마주보도록 중첩 고정한 후, 열풍에 의하여 용융된 상기 중첩부를 가압하고 접합함으로써 수행될 수 있다. 이러한 두 개의 비닐 하우스용 단열시트가 중첩 고정된 모습의 단면도는 도 3에 나타내었다. 이러한 경우, 비닐 하우스용 단열시트의 대형화와 대량생산이 용이해지는 효과가 있다. Particularly, the heat insulating sheet for a vinyl house is manufactured by thermally fusing a plurality of heat insulating sheets for standardized vinyl houses, respectively. The heat sealing is performed by bonding the lower layer 3 and the lower layer 3 ' ) To face each other, and then pressurizing and bonding the overlapped portion by hot air. FIG. 3 is a cross-sectional view of the two overlapping heat insulating sheets for a vinyl house. In this case, there is an effect that the heat insulating sheet for a greenhouse can be made large in size and mass-produced easily.

상기 상부층(1)은 선형저밀도 폴리에틸렌(LLDPE) 70 내지 90 중량% 및 저밀도 폴리에틸렌(LDPE) 10 내지 30 중량%를 포함하여, 비닐 하우스용 단열시트 자체의 우수한 인장강도를 부여할 수 있다. 이러한 상부층은 당분야에서 일반적으로 사용되는 첨가제를 더 사용할 수 있는 바, 그 종류는 특별히 한정하지 않는다. 보다 구체적으로 산화방지제, UV 안정제 등을 사용하는 것이 좋다.The upper layer 1 includes 70 to 90% by weight of linear low density polyethylene (LLDPE) and 10 to 30% by weight of low density polyethylene (LDPE), and thus can provide an excellent tensile strength of the heat insulating sheet itself for a vinyl house. Such an upper layer may further include additives commonly used in the art, and the kind thereof is not particularly limited. More specifically, it is preferable to use an antioxidant, a UV stabilizer or the like.

상기 선형저밀도 폴리에틸렌(Linear Low Density Polyethylene, LLDPE)은 시판되거나 또는 당업자가 용이하게 접할 수 있는 기술로 제조할 수 있다. 보다 구체적으로 상기 선형저밀도 폴리에틸렌은 에틸렌의 단독 중합체일 수 있지만, 에틸렌과 예를 들면, 프로필렌, 부텐, 펜텐, 헥센, 4-메틸-1-펜텐, 또는 옥텐과 같은 알파-올레핀의 코모노머의 공중합체를 보다 바람직하게 사용할 수 있다.The linear low density polyethylene (LLDPE) is commercially available or can be manufactured by a technique which is easily accessible to those skilled in the art. More specifically, the linear low density polyethylene may be a homopolymer of ethylene, but it may be a copolymer of ethylene and an alpha-olefin comonomer such as propylene, butene, pentene, hexene, 4-methyl- The coalescence can be more preferably used.

또한, 상기 선형 저밀도 폴리에틸렌의 중량평균분자량(Mw)은 9만 내지 11만이고, 분자량분포도(GPC)는 2.5 내지 2.8인 것을 사용하여, 비닐 하우스용 단열시트에 우수한 인장강도를 확보할 수 있다. The linear low density polyethylene has a weight average molecular weight (Mw) of 90,000 to 110,000 and a molecular weight distribution (GPC) of 2.5 to 2.8, whereby an excellent tensile strength can be secured in a heat insulating sheet for a vinyl house.

또한, 상기 선형저밀도 폴리에틸렌은 메탈로센 촉매를 이용한 것(mLLDPE) 또는 옥텐(옥탄가 35% 이상)을 함유한 선형저밀도 폴리에틸렌(옥텐 LLDPE)을 사용하여, 비닐 하우스용 단열시트에 우수한 인장강도를 확보할 수 있다. In addition, the linear low density polyethylene is obtained by using linear low density polyethylene (octene LLDPE) containing a metallocene catalyst (mLLDPE) or octane (octane value 35% or more) and securing excellent tensile strength to a heat insulating sheet for a vinyl house can do.

상기 중간층(2)은 비닐 하우스용 단열시트에 기포를 부여하는 층으로, 저밀도 폴리에틸렌(LDPE) 40 내지 60 중량% 및 에틸아세테이트(EA) 40 내지 60 중량%를 포함하여, 열융착이 용이하고 견고하게 수행될 수 있다. 이러한 중간층은 당분야에서 일반적으로 사용되는 첨가제를 더 사용할 수 있는 바, 그 종류는 특별히 한정하지 않는다.The intermediate layer 2 is a layer for imparting air bubbles to the heat insulating sheet for a vinyl house and includes 40 to 60% by weight of low density polyethylene (LDPE) and 40 to 60% by weight of ethyl acetate (EA) . ≪ / RTI > Such an intermediate layer may further include additives commonly used in the art, and the kind thereof is not particularly limited.

상기 하부층(3)은 저밀도 폴리에틸렌(LDPE) 40 내지 60 중량% 및 에틸렌비닐아세테이트(EVA) 40 내지 60 중량%를 포함하여, 열융착이 용이하고 견고하게 수행될 수 있다. 이러한 하부층은 당분야에서 일반적으로 사용되는 첨가제를 더 사용할 수 있는 바, 그 종류는 특별히 한정하지 않는다. 보다 구체적으로 무적제를 사용하는 것이 좋다.The lower layer 3 includes 40 to 60% by weight of low density polyethylene (LDPE) and 40 to 60% by weight of ethylene vinyl acetate (EVA), and can be easily and thermally fused. The lower layer may further include additives generally used in the art, and the kind thereof is not particularly limited. More specifically, it is preferable to use an inert agent.

상기 에틸렌비닐아세테이트(EVA)는 비닐아세테이트(VA)의 함량이 5 내지 10 중량%인 것을 사용하여, 비닐 하우스용 단열시트를 중첩하여 접착시, 열융착으로 용이하고 견고하게 접착할 수 있는 효과가 있다. 특히, 접착 후, 접착부의 일체성이 뛰어난 장점이 있다.The ethylene vinyl acetate (EVA) having an amount of 5 to 10% by weight of vinyl acetate (VA) has an effect of being able to easily and firmly adhere to a heat insulating sheet for a vinyl house, have. Particularly, there is an advantage that after the bonding, the integrity of the bonding portion is excellent.

이러한 본 발명의 일 구현예에 따른 비닐 하우스용 단열시트는 둘 이상의 비닐 하우스용 단열시트를 각각 열융착하는 경우, 우수한 접착강도를 갖고, 우수한 단열특성을 유지할 수 있는 효과가 있다. 특히, 접착 후, 접착부의 일체성이 뛰어나, 접착강도가 우수할 뿐만 아니라, 우수한 단열 특성을 유지할 수 있어, 겨울에는 보온효과를 얻을 수 있고, 여름에는 보냉효과를 얻을 수 있는 효과가 있다.The heat insulating sheet for a vinyl house according to an embodiment of the present invention has an excellent adhesive strength and an excellent heat insulating property when thermally fusing two or more heat insulating sheets for a vinyl house. Particularly, after the bonding, the bonding portion is excellent in the integrity of the bonding portion, and not only the bonding strength is excellent, but also the excellent heat insulating property can be maintained, so that a warming effect can be obtained in winter and a cooling effect in summer can be obtained.

상부층(1, 1') 중간층(2, 2') 하부층(3, 3')
에어캡(4)
The upper layer 1, 1 'the intermediate layer 2, 2' the lower layer 3, 3 '
Air cap (4)

Claims (4)

비닐하우스의 외부를 향하는 상부층(1), 다수개의 에어캡(4)이 형성되어 있는 중간층(2), 및 비닐하우스의 내부를 향하는 하부층(3)을 포함하는 비닐 하우스용 단열시트에 있어서,
상기 상부층(1)은 선형저밀도 폴리에틸렌(LLDPE) 70 내지 90 중량% 및 저밀도 폴리에틸렌(LDPE) 10 내지 30 중량%를 포함하고,
상기 중간층(2)은 저밀도 폴리에틸렌(LDPE) 40 내지 60 중량% 및 에틸아세테이트(EA) 40 내지 60 중량%를 포함하고,
상기 하부층(3)은 저밀도 폴리에틸렌(LDPE) 40 내지 60 중량% 및 에틸렌비닐아세테이트(EVA) 40 내지 60 중량%를 포함하는 것을 특징으로 하는 비닐 하우스용 단열시트.
A heat insulating sheet for a vinyl house comprising an upper layer (1) facing the outside of the vinyl house, an intermediate layer (2) having a plurality of air caps (4) and a lower layer (3) facing the inside of the vinyl house,
The upper layer 1 comprises 70 to 90% by weight of linear low density polyethylene (LLDPE) and 10 to 30% by weight of low density polyethylene (LDPE)
The intermediate layer (2) comprises 40 to 60% by weight of low density polyethylene (LDPE) and 40 to 60% by weight of ethyl acetate (EA)
Wherein the lower layer (3) comprises 40 to 60% by weight of low density polyethylene (LDPE) and 40 to 60% by weight of ethylene vinyl acetate (EVA).
제 1 항에 있어서,
상기 비닐 하우스용 단열시트는 크기가 규격화된 수 개의 비닐 하우스용 단열시트를 각각 열융착하여 제조되는 것으로,
상기 열융착은 각각의 비닐 하우스용 단열시트의 하부층(3)과 하부층(3')이 마주보도록 중첩 고정한 후, 열풍에 의하여 용융된 상기 중첩부를 가압하고 접합함으로써 수행되는 것을 특징으로 하는 비닐 하우스용 단열시트.
The method according to claim 1,
The heat insulating sheet for a vinyl house is manufactured by thermally fusing several heat insulating sheets for a vinyl house whose sizes are standardized,
Characterized in that the thermal fusion is performed by overlapping and fixing the lower layer (3) and the lower layer (3 ') of the heat insulating sheet for a vinyl house facing each other, and then pressing and bonding the melted portions of the vinyl house Insulating sheet.
제 1 항에 있어서,
상기 선형 저밀도 폴리에틸렌의 중량평균분자량(Mw)은 9만 내지 11만이고, 분자량분포도(GPC)는 2.5 내지 2.8인 것을 특징으로 하는 비닐 하우스용 단열시트.
The method according to claim 1,
Wherein the linear low density polyethylene has a weight average molecular weight (Mw) of 90,000 to 110,000 and a molecular weight distribution (GPC) of 2.5 to 2.8.
제 1 항에 있어서,
상기 에틸렌비닐아세테이트(EVA)는 비닐아세테이트(VA)의 함량이 5 내지 10 중량%인 것을 특징으로 하는 비닐 하우스용 단열시트.
The method according to claim 1,
Wherein the ethylene vinyl acetate (EVA) has a content of vinyl acetate (VA) of 5 to 10% by weight.
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KR20190128928A (en) 2018-05-09 2019-11-19 영농조합법인 대한뽁뽁이 Insulation sheet for vinyl greenhouse
KR102047870B1 (en) * 2019-07-30 2019-11-22 (주)비비스 Heat insulation sheet having excellent anti-fogging property and melt adhesion strength for vinyl house
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JP2010104315A (en) 2008-10-31 2010-05-13 Mkv Dream Co Ltd Greenhouse with agricultural pneumatic film structure
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