JP6905731B2 - Non-woven fabric for agricultural house curtains - Google Patents
Non-woven fabric for agricultural house curtains Download PDFInfo
- Publication number
- JP6905731B2 JP6905731B2 JP2016215779A JP2016215779A JP6905731B2 JP 6905731 B2 JP6905731 B2 JP 6905731B2 JP 2016215779 A JP2016215779 A JP 2016215779A JP 2016215779 A JP2016215779 A JP 2016215779A JP 6905731 B2 JP6905731 B2 JP 6905731B2
- Authority
- JP
- Japan
- Prior art keywords
- woven fabric
- curtains
- agricultural house
- house according
- fibers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims description 121
- 239000000835 fiber Substances 0.000 claims description 60
- 238000002834 transmittance Methods 0.000 claims description 30
- 229920000642 polymer Polymers 0.000 claims description 25
- 239000000454 talc Substances 0.000 claims description 24
- 229910052623 talc Inorganic materials 0.000 claims description 24
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 claims description 22
- 230000035699 permeability Effects 0.000 claims description 18
- 239000011230 binding agent Substances 0.000 claims description 12
- 239000000470 constituent Substances 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 238000007731 hot pressing Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 11
- 239000005020 polyethylene terephthalate Substances 0.000 description 11
- -1 polyethylene terephthalate Polymers 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000009987 spinning Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000002685 polymerization catalyst Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- MMINFSMURORWKH-UHFFFAOYSA-N 3,6-dioxabicyclo[6.2.2]dodeca-1(10),8,11-triene-2,7-dione Chemical group O=C1OCCOC(=O)C2=CC=C1C=C2 MMINFSMURORWKH-UHFFFAOYSA-N 0.000 description 1
- XGIAHMUOCFHQTI-UHFFFAOYSA-N Cl.Cl.Cl.Cl.CC Chemical compound Cl.Cl.Cl.Cl.CC XGIAHMUOCFHQTI-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000007561 laser diffraction method Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000013306 transparent fiber Substances 0.000 description 1
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Landscapes
- Protection Of Plants (AREA)
- Greenhouses (AREA)
- Nonwoven Fabrics (AREA)
Description
本発明は農業用ハウスのカーテン用不織布に関し、特に、農業用ハウスのハウス壁の内面すなわちハウスの側壁や天井板の内面に沿って配置さけるサイドカーテンとして用いられるサイドカーテン用不織布や、植付け作物よりも上側かつ天井板よりも下側の位置に設置される内張りカーテン用不織布などの、農業用ハウスのカーテン用不織布に関する。 The present invention relates to a non-woven fabric for curtains of an agricultural house, particularly from a non-woven fabric for side curtains used as a side curtain placed along the inner surface of a house wall of an agricultural house, that is, the side wall of the house or the inner surface of a ceiling plate, or a planted crop. Also relates to non-woven fabrics for agricultural houses, such as non-woven fabrics for lining curtains, which are installed on the upper side and below the ceiling board.
農業用ハウスにおける保温は暖房機に頼って実施されるのが通例である。しかし、そのための燃料である重油や灯油の価格高騰を受け、暖房機以外での保温性向上を目的に、さまざまな試みが見直され、提案され、実施されている。ハウス内での温度、湿度等は作物の成長に影響を与え、温度、湿度は低すぎても高すぎても良くない。 Insulation in agricultural houses is usually carried out by relying on a heater. However, in response to the soaring prices of heavy oil and kerosene, which are fuels for that purpose, various attempts have been reviewed, proposed, and implemented for the purpose of improving heat retention other than heaters. The temperature and humidity in the house affect the growth of crops, and the temperature and humidity may be too low or too high.
暖房機以外の手段にてハウス内の保温性を向上するために、内張りカーテンを用い、この内張りカーテンを開け閉めすることで温湿度を調整することが行われている。そして、近年ではこの内張りカーテンも二重、三重となり、フィルムや不織布等が必要に応じて使用されている。さらに農業用ハウス全体からの放熱を抑えるため、ハウスの構造全体を二重のフィルムにして、そのフィルム同士の間に形成される空間に送風機で空気を送り込むことで断熱性を向上させた二重膜構造のハウスも提案されている（特許文献１）。 In order to improve the heat retention in the house by means other than the heater, a lining curtain is used, and the temperature and humidity are adjusted by opening and closing the lining curtain. In recent years, the lining curtains have also become double or triple, and films, non-woven fabrics, etc. are used as needed. Furthermore, in order to suppress heat dissipation from the entire agricultural house, the entire structure of the house is made into a double film, and air is blown into the space formed between the films with a blower to improve heat insulation. A film-structured house has also been proposed (Patent Document 1).
この二重構造ハウスは、空気断熱層を有し、しかも高い透光性を備えている。しかし、この二重膜フィルムに送風してフィルムが膨張した場合には、条件により作物の生育に悪い影響が出たり、送風した空気が結露し二重構造のフィルム同士の内部に水が溜まりフィルムが破れたり、ハウス内側に結露が起こり作物の生育に影響する等の問題がある。 This double-structured house has an air-insulating layer and is highly translucent. However, when the film expands by blowing air on this double-layer film, the growth of crops may be adversely affected depending on the conditions, or the blown air may condense and water may collect inside the double-layered films. There are problems such as tearing and dew condensation inside the house, which affects the growth of crops.
このほかに、農業用ハウスのサイド面からの放熱を防ぐため、三層構成のプラスチック気泡シートが提案されている（特許文献２）。しかし、この三層構成のプラスチック気泡シートは、フィルムで構成され、透光性は高いものの、内部に空気層はあるがその厚さは特許文献１の二重膜構造ハウスより薄く、構成する素材が保温性の低いオレフィン系樹脂であることから遠赤外線の透過率が高く、これらが原因して保温性は十分とは言えず、また通気性が無いため結露がおこり作物の生育に影響するという問題がある。 In addition, in order to prevent heat dissipation from the side surface of the agricultural house, a three-layer plastic bubble sheet has been proposed (Patent Document 2). However, although this three-layer plastic bubble sheet is made of a film and has high translucency, it has an air layer inside, but its thickness is thinner than that of the double-layered house of Patent Document 1, and is a constituent material. Because it is an olefin resin with low heat retention, it has high transmittance of far infrared rays, and it cannot be said that the heat retention is sufficient due to these, and because it is not breathable, dew condensation occurs and affects the growth of crops. There's a problem.
一方、カーテンに不織布を用いることを想定できる。その場合に、不織布は、繊維製品であることからその表面積が大きく、また通気性、空隙があり、結露水を保水でき、結露水を保水することで断熱性が増すというメリットがある。そのため、上述の問題は起こらない。しかし、繊維製品であるがゆえに光の散乱が起こることで透光率が低く、したがって朝日の光をハウス内に十分取り込めないという課題がある。 On the other hand, it can be assumed that a non-woven fabric is used for the curtain. In that case, since the non-woven fabric is a textile product, it has a large surface area, has air permeability and voids, can retain condensed water, and has an advantage that the heat insulating property is increased by retaining the condensed water. Therefore, the above-mentioned problem does not occur. However, since it is a textile product, there is a problem that the light transmittance is low due to light scattering, and therefore the light of the morning sun cannot be sufficiently taken into the house.
本発明の課題は、透光性、保温性、保水性を備えた農業用ハウスのカーテン用不織布を提供することにある。 An object of the present invention is to provide a non-woven fabric for curtains of an agricultural house having translucency, heat retention, and water retention.
本発明者は、上記課題を達成するために鋭意検討したところ、酸化チタン等の顔料を含有しないエチレンテレフタレート系繊維で構成することで、透光率の高い不織布が得られることを見出し、本発明に到達した。なおかつ、このエチレンテレフタレート系樹脂にタルクを含有させることで、高速紡糸により一気に紡糸・延伸し開繊性良好なスパンボンド不織布が得られることを見出した。 As a result of diligent studies to achieve the above problems, the present inventor has found that a non-woven fabric having a high light transmittance can be obtained by using an ethylene terephthalate fiber that does not contain a pigment such as titanium oxide. Reached. Moreover, it has been found that by adding talc to this ethylene terephthalate resin, a spunbonded non-woven fabric having good fiber opening property can be obtained by spinning and stretching at once by high-speed spinning.
本発明は、以下の事項を要旨とするものである。 The gist of the present invention is as follows.
（１）顔料を含有しないエチレンテレフタレート系重合体によって形成された繊維により構成される不織布であって、構成繊維の繊度が３〜１５デシテックスであり、繊維量の目付が１５〜７０ｇ／ｍ２であり、透光率が６０％以上であり、通気度が３５０ｃｃ／ｃｍ２／ｓｅｃ以下であり、前記構成繊維の断面形状が扁平であり、その長径と短径の比が５以上であることを特徴とする農業用ハウスのカーテン用不織布。 (1) A non-woven fabric composed of fibers formed of a pigment-free ethylene terephthalate polymer, the constituent fibers having a fineness of 3 to 15 decitex and a fiber amount of 15 to 70 g / m 2 . There, the transmittance is 60% or more, air permeability Ri der less 350cc / cm 2 / sec, a sectional shape of the constituent fibers is flattened, Ru der ratio of minor and its major axis is 5 or more Non-woven fabric for curtains in agricultural houses.
（２）不織布が、長繊維から構成されるスパンボンド不織布であることを特徴とする（１）の農業用ハウスのカーテン用不織布。 (2) The non-woven fabric for curtains of an agricultural house according to (1), wherein the non-woven fabric is a spunbonded non-woven fabric composed of long fibers.
（３）繊維量の目付が１５〜６０ｇ／ｍ ２ であり、透光率が６５％以上であることを特徴とする（１）または（２）の農業用ハウスのカーテン用不織布。 (3) The non-woven fabric for curtains of an agricultural house according to (1) or (2), wherein the basis weight of the fiber amount is 15 to 60 g / m 2 and the light transmittance is 65% or more.
（４）繊維量の目付が３５〜７０ｇ／ｍ ２ であり、通気度が１５０ｃｃ／ｃｍ ２ ／ｓｅｃ以下であることを特徴とする（１）または（２）の農業用ハウスのカーテン用不織布。 (4) The non-woven fabric for curtains of an agricultural house according to (1) or (2) , wherein the basis weight of the fiber amount is 35 to 70 g / m 2 and the air permeability is 150 cc / cm 2 / sec or less.
（５）熱圧接不織布であり、その圧接面積率が２５％以上であることを特徴とする（１）から（４）までのいずれかの農業用ハウスのカーテン用不織布。 (5) A non-woven fabric for curtains of any agricultural house according to any one of (1) to (4) , which is a hot pressing non-woven fabric and has a pressure-welding area ratio of 25% or more.
（６）バインダー樹脂が含浸及びまたはコーティングされていることを特徴とする（１）から（５）までのいずれかの農業用ハウスのカーテン用不織布。 (6) A non-woven fabric for a curtain of an agricultural house according to any one of (1) to (5), which is impregnated and / or coated with a binder resin.
（７）エチレンテレフタレート系重合体は、平均粒径が０．５〜３μｍであるタルクを１質量％以下含有していることを特徴とする（１）から（６）までのいずれかの農業用ハウスのカーテン用不織布。 (7) The ethylene terephthalate polymer is characterized by containing 1% by mass or less of talc having an average particle size of 0.5 to 3 μm for any of (1) to (6) for agriculture. Non-woven fabric for house curtains.
（８）上記（１）から（７）までのいずれかの農業用ハウスのカーテン用不織布を製造するときに、エチレンテレフタレート系重合体を紡糸口金より紡出し、紡出糸条をエアーサッカーにて牽引・細化した後、開繊させることを特徴とする農業用ハウスのカーテン用不織布の製造方法。 (8) When producing a non-woven fabric for curtains of any of the above (1) to (7), an ethylene terephthalate polymer is spun from a spinneret, and spun yarns are spun by air soccer. A method for producing a non-woven fabric for curtains in an agricultural house, which is characterized in that the fibers are opened after being towed and thinned.
（９）上記（１）から（７）までのいずれかの農業用ハウスのカーテン用不織布が樹脂フィルムに貼り合わされていることを特徴とする農業用ハウスのカーテン。 (9) A curtain for an agricultural house, wherein the non-woven fabric for the curtain of the agricultural house according to any one of (1) to ( 7) above is bonded to a resin film.
本発明の不織布によれば、エチレンテレフタレート系重合体によって構成され、この重合体は、酸化チタン等の顔料を含有していないため透光率が高く、特に、構成繊維が扁平糸であると、さらに透光率が向上し、使用上において耐毛羽立ち性も向上する。透光性の高い資材であり、不織布であるため吸湿性、保水性にも優れている。またエチレンテレフタレート系重合体にタルクを含有させることで、スパンボンド法にて本発明の効果を備えた開繊性良好な不織布が容易に得られ、サイドカーテンや内張りカーテンなどの農業用ハウスのカーテンに好適に用いることができる。 According to the non-woven fabric of the present invention, it is composed of an ethylene terephthalate polymer, and since this polymer does not contain a pigment such as titanium oxide, it has a high light absorbance. Furthermore, the light transmittance is improved, and the fluff resistance is also improved in use. It is a highly translucent material, and because it is a non-woven fabric, it has excellent hygroscopicity and water retention. Further, by adding talc to the ethylene terephthalate polymer, a non-woven fabric having the effect of the present invention and having good fiber opening property can be easily obtained by the spunbond method, and curtains for agricultural houses such as side curtains and lining curtains can be easily obtained. Can be suitably used for.
本発明の農業用ハウスのカーテン用不織布は、その構成繊維がエチレンテレフタレート系重合体によって形成される。エチレンテレフタレート系重合体としては、ポリエチレンテレフタレートや、エチレンテレフタレート単位に他の酸成分やジオール成分が共重合しているもの等が挙げられる。耐熱性等の観点より、エチレンテレフタレート単位が８０モル％以上であることが好ましく、ポリエチレンテレフタレートがより好ましい。この重合体は、エチレングリコール等のグリコール類や、イソフタル酸、２，６−ナフタレンジカルボン酸等のジカルボン酸を、共重合していてもよい。 The constituent fibers of the non-woven fabric for curtains of the agricultural house of the present invention are formed of an ethylene terephthalate polymer. Examples of the ethylene terephthalate polymer include polyethylene terephthalate and those obtained by copolymerizing an ethylene terephthalate unit with another acid component or a diol component. From the viewpoint of heat resistance and the like, the unit of ethylene terephthalate is preferably 80 mol% or more, and polyethylene terephthalate is more preferable. This polymer may be copolymerized with glycols such as ethylene glycol and dicarboxylic acids such as isophthalic acid and 2,6-naphthalenedicarboxylic acid.
エチレンテレフタレート系重合体は、白色顔料である酸化チタン等の顔料を含有しない。したがって、本発明の不織布の構成繊維は透明性が良好である。 The ethylene terephthalate polymer does not contain a pigment such as titanium oxide, which is a white pigment. Therefore, the constituent fibers of the non-woven fabric of the present invention have good transparency.
本発明の不織布を構成する繊維の繊度は、３〜１５デシテックスであることが必要である。構成繊維の繊度が３デシテックス未満となると、構成繊維が細くなり光の乱反射が増し、透光率が低下する。反対に繊度が１５デシテックスを超えると紡糸安定性が低下する。これらの理由からより好ましくは５〜１３デシテックスであり、さらに好ましくは８〜１２デシテックスである。 The fineness of the fibers constituting the non-woven fabric of the present invention needs to be 3 to 15 decitex. When the fineness of the constituent fibers is less than 3 decitex, the constituent fibers become thin, the diffused reflection of light increases, and the light transmittance decreases. On the contrary, when the fineness exceeds 15 decitex, the spinning stability is lowered. For these reasons, it is more preferably 5 to 13 decitex, and even more preferably 8 to 12 decitex.
本発明の不織布における繊維量の目付は、すなわち後述のような含浸やコーティングされたバインダー樹脂を含まない、繊維量だけの目付は、１５〜７０ｇ／ｍ２であることが必要である。目付が１５ｇ／ｍ２未満となると、十分な透光性が得られるが、機械的特性が低く加工性に劣るだけでなく、繊度によっては通気性が高くなりすぎるため十分な保温性が得られにくくなる。また、目付が７０ｇ／ｍ２を超えると、繊度が高くても繊維数が多く厚みも増すため十分な透光性が得られない。 The basis weight of the fiber amount in the non-woven fabric of the present invention, that is, the basis weight of the fiber amount alone, which does not include the impregnated or coated binder resin as described later, needs to be 15 to 70 g / m 2. When the basis weight is less than 15 g / m 2 , sufficient translucency can be obtained, but not only the mechanical properties are low and the workability is inferior, but also the air permeability becomes too high depending on the fineness, so that sufficient heat retention can be obtained. It becomes difficult. Further, when the basis weight exceeds 70 g / m 2 , sufficient translucency cannot be obtained because the number of fibers is large and the thickness is increased even if the fineness is high.
本発明の農業用ハウスのカーテン用不織布として、具体的には、農業用ハウスのハウス壁の内面すなわちハウスの側壁や天井板の内面に沿って配置さけるサイドカーテンとして用いられるサイドカーテン用不織布と、植付け作物よりも上側かつ天井板よりも下側の位置に設置される内張りカーテン用不織布とを挙げることができる。 As the non-woven fabric for curtains of the agricultural house of the present invention, specifically, the non-woven fabric for side curtains used as a side curtain arranged along the inner surface of the house wall of the agricultural house, that is, the side wall of the house or the inner surface of the ceiling plate. It can be mentioned as a non-woven fabric for lining curtains installed at a position above the planted crop and below the ceiling board.
このうち、サイドカーテン用不織布の場合は、繊維量の目付は、上記の理由から、１５〜６０ｇ／ｍ２であることが好ましく、２０〜５０ｇ／ｍ２であることがより好ましい。一方、内張りカーテン用不織布の場合は、同様の理由によって、３５〜７０ｇ／ｍ２であることが好ましく、４０〜６０ｇ／ｍ２であることがより好ましい。 Among them, in the case of non-woven fabric for a side curtain, fibers of basis weight, for the reasons mentioned above, is preferably from 15 to 60 g / m 2, and more preferably 20 to 50 g / m 2. On the other hand, in the case of non-woven fabric for lining curtain, for the same reason, it is preferably 35~70g / m 2, and more preferably 40 to 60 g / m 2.
本発明の不織布は、ＪＩＳに規定される透光率が６０％以上であることが重要である。不織布の透光率が６０％未満であると、太陽光等の光をハウス内へ十分取り込めず作物の生育の進みが遅れる。この理由から、詳細には、サイドカーテン用不織布の場合は、より高い透光率であることが好ましく、実用的には６５％以上であることが好ましく、７５％以上であることがより好ましい。一方、内張りカーテン用不織布の場合は、実用的には透光率は６０％以上を要し、より好ましくは６５％以上である。 It is important that the non-woven fabric of the present invention has a light transmittance of 60% or more specified in JIS. If the light transmittance of the non-woven fabric is less than 60%, light such as sunlight cannot be sufficiently taken into the house, and the progress of crop growth is delayed. For this reason, in detail, in the case of the non-woven fabric for side curtains, the light transmittance is preferably higher, practically 65% or more, and more preferably 75% or more. On the other hand, in the case of a non-woven fabric for a lining curtain, the light transmittance needs to be 60% or more, more preferably 65% or more in practical use.
本発明の不織布は、通気度が３５０ｃｃ／ｃｍ２／ｓｅｃ以下であることが必要である。不織布の通気度が３５０ｃｃ／ｃｍ２／ｓｅｃより高いと、夜間の温度低下により結露した水を保水、蒸散する性能は高いが、ハウス内の保温性が十分に得られない。この理由から、詳細には、サイドカーテン用不織布の場合は、通気度は３００ｃｃ／ｃｍ２／ｓｅｃ以下であることが好ましく、１００ｃｃ／ｃｍ２／ｓｅｃ以下であることが特に好ましい。一方、内張りカーテン用不織布の場合は、同様の理由により、通気度は１５０ｃｃ／ｃｍ２／ｓｅｃ以下であることが好ましく、１００ｃｃ／ｃｍ２／ｓｅｃ以下であることがより好ましく、５０ｃｃ／ｃｍ２／ｓｅｃ以下であることがいっそう好ましい。 The non-woven fabric of the present invention needs to have an air permeability of 350 cc / cm 2 / sec or less. If the air permeability of the non-woven fabric is higher than 350 cc / cm 2 / sec, the performance of retaining and evaporating the condensed water due to the temperature drop at night is high, but the heat retention in the house cannot be sufficiently obtained. For this reason, in detail, in the case of the non-woven fabric for side curtains, the air permeability is preferably 300 cc / cm 2 / sec or less, and particularly preferably 100 cc / cm 2 / sec or less. On the other hand, in the case of non-woven fabric for lining curtain, for the same reason, it is preferable that the air permeability is less than 150cc / cm 2 / sec, more preferably not more than 100cc / cm 2 / sec, 50cc / cm 2 / It is more preferably sec or less.
本発明の不織布は、スパンボンド法で製造された熱圧接不織布であることが好適で、その圧接面積率は２５％以上であることが好ましい。熱圧接不織布でない場合、例えばニードルパンチ不織布では、不織布の厚みが嵩み、乱反射が増加して透光率が低下するため好ましくない。また、その圧接面積率が２５％未満であると、非圧接部分が広範囲であるため同様に透光率が低下し好ましくない。 The non-woven fabric of the present invention is preferably a hot pressure-welded non-woven fabric produced by the spunbond method, and the pressure-welding area ratio thereof is preferably 25% or more. When the non-woven fabric is not hot pressed, for example, a needle punched non-woven fabric is not preferable because the thickness of the non-woven fabric increases, diffuse reflection increases, and the light transmittance decreases. Further, if the pressure contact area ratio is less than 25%, the light transmittance is similarly lowered because the non-pressure contact portion is wide, which is not preferable.
本発明の不織布を構成する繊維は、断面形状が扁平であり、その長径と短径の比（長径／短径）が５以上である。ここにいう「扁平」とは、楕円形を含む概念である。この比が５未満であると、扁平度が低く光があたった時に乱反射が増え、結果として透光率が低下しやすくなる。一方で、この比が２０を超えると、繊維断面の異形の度合いが高すぎて繊維の紡糸安定性が損なわれやすくなる。このことから、繊維断面の長径と短径の比は８〜１６がより好ましい。反対に繊維断面形状が例えば丸（中空含む）である場合は、扁平形状に比べ使用時に毛羽が立ちやすいため、外観上あまり良くない。一方、扁平以外の異形断面は、光があたった時に乱反射が増え結果として透光率が低下するため好ましくない。 The fibers constituting the non-woven fabric of the present invention have a flat cross-sectional shape, and the ratio of the major axis to the minor axis (major axis / minor axis) is 5 or more. The term "flat" as used herein is a concept including an ellipse. If this ratio is less than 5, the flatness is low and diffused reflection increases when exposed to light, and as a result, the light transmittance tends to decrease. On the other hand, if this ratio exceeds 20, the degree of deformation of the fiber cross section is too high, and the spinning stability of the fiber is likely to be impaired. For this reason, the ratio of the major axis to the minor axis of the fiber cross section is more preferably 8 to 16. On the other hand, when the cross-sectional shape of the fiber is, for example, round (including hollow), fluff is more likely to occur during use as compared with the flat shape, which is not very good in appearance. On the other hand, a deformed cross section other than flat is not preferable because diffused reflection increases when exposed to light and as a result, the light transmittance decreases.
特に、植付け作物よりも上側かつ天井板よりも下側の位置に設置される内張りカーテン用不織布の場合は、採光を目的として透光率を向上させるために、扁平である断面形状の長径と短径の比（長径／短径）が１０以上であることが好ましい。この比をこの範囲に設定することで、上記のように透光率を向上させることができるうえに、空気の通路が狭くなって通気度を下げやすくすることができる。 In particular, in the case of a non-woven fabric for lining curtains installed at a position above the planted crop and below the ceiling plate, in order to improve the light transmittance for the purpose of daylighting, the major axis and the short diameter of the flat cross-sectional shape are used. The diameter ratio (major axis / minor axis) is preferably 10 or more. By setting this ratio in this range, the light transmittance can be improved as described above, and the air passage can be narrowed to facilitate the reduction of the air permeability.
農業用ハウスにおいて、これまで、内張りカーテンには、夜間におけるハウス内の温度低下の抑制性能と、結露の防止性能とが、主として求められてきた。このため、昼間はカーテンを開け、夜間のみカーテンを用いることが行われていた。特に不織布製のカーテンは、透光率が高くないため、そのカーテンが作物よりも天井側に張られることで光が遮られ、ハウス内が暗くなる。このため、不織布製のカーテンは、上述のように昼間は開けられることが通常であった。しかしながら、このような内張りカーテンを用いている寒冷地では、気温が上昇していない朝方は、ハウス内の保温のためにカーテンを開けたくないが、光は取り込みたいという要望があった。そこで、本発明の農業用ハウスのカーテン用不織布を特に内張りカーテンに適用すれば、透光率を向上させることができるため、朝方や昼間においてもカーテンを開けずに閉じたままで十分に光を取り込むことができ、しかも上記のように通気度を下げやすくすることができることで保温効果を得ることもできる。 In an agricultural house, the lining curtain has been mainly required to have a performance of suppressing a temperature drop in the house at night and a performance of preventing dew condensation. For this reason, it was practiced to open the curtain during the day and use the curtain only at night. In particular, non-woven fabric curtains do not have high light transmittance, so the curtains are stretched closer to the ceiling than the crops to block light and darken the interior of the house. Therefore, the non-woven fabric curtain is usually opened in the daytime as described above. However, in cold regions where such lining curtains are used, in the morning when the temperature does not rise, there is a request that the curtains should not be opened to keep the inside of the house warm, but that light should be taken in. Therefore, if the non-woven fabric for curtains of an agricultural house of the present invention is particularly applied to a lining curtain, the light transmittance can be improved, so that light can be sufficiently taken in even in the morning or in the daytime without opening the curtain. Moreover, the heat retention effect can be obtained by making it easy to lower the air permeability as described above.
本発明の不織布は、所要の機械的特性を得るために、繊維同士の熱圧接により一体化した後に、バインダー樹脂等を含浸および、またはコーティングすると良い。熱圧接のみによる一体化では、場合によっては、その機械的特性を得るために高温での圧接により圧接強度を高くすることが必要になることがあり、その結果として繊維に与えるダメージが大きく破れやすくなり耐久性に劣ることが起こり得る。このためバインダー樹脂等を含浸および、またはコーティングする場合は、その熱圧接温度は、比較的低めの、（不織布を構成する重合体の融点−３０）℃から（その融点−１００）℃が良い。用いるバインダー樹脂は、特に限定しないが、アクリル系、エステル系、ＥＶＡ、ポバール等を挙げることができる。不織布の構成繊維を形成するためのエチレンテレフタレート系重合体と屈折率が近いものが好ましい。なお、バインダー樹脂等を含浸および、またはコーティングすることで、上述した通気度をより低く抑えることが可能である。 In order to obtain the required mechanical properties, the non-woven fabric of the present invention may be impregnated or coated with a binder resin or the like after being integrated by hot pressing between the fibers. In the case of integration by hot pressing only, in some cases, it may be necessary to increase the pressing strength by pressing at a high temperature in order to obtain its mechanical properties, and as a result, the damage to the fibers is large and the fibers are easily torn. It may be inferior in durability. Therefore, when impregnating or coating with a binder resin or the like, the hot pressing temperature thereof is preferably relatively low, from (melting point -30) ° C. to (melting point -100) ° C. of the polymer constituting the non-woven fabric. The binder resin used is not particularly limited, and examples thereof include acrylic type, ester type, EVA, and Poval. It is preferable that the refractive index is close to that of the ethylene terephthalate polymer for forming the constituent fibers of the non-woven fabric. By impregnating or coating with a binder resin or the like, the above-mentioned air permeability can be suppressed to a lower level.
本発明の不織布は、上述の性能が得られれば、長繊維不織布であっても短繊維不織布であっても良い。しかし、短繊維不織布は繊維端部が多く存在することから透光率の低下が懸念され、生産工程も長く、機械的特性も長繊維不織布に及ばない。このため、上述のように長繊維不織布であるスパンボンド不織布であることがより好ましい。 The non-woven fabric of the present invention may be a long-fiber non-woven fabric or a short-fiber non-woven fabric as long as the above-mentioned performance can be obtained. However, since the short fiber non-woven fabric has many fiber ends, there is a concern that the light transmittance may decrease, the production process is long, and the mechanical properties are not as good as those of the long fiber non-woven fabric. Therefore, it is more preferable to use a spunbonded non-woven fabric which is a long-fiber non-woven fabric as described above.
スパンボンド不織布を得るためのエチレンテレフタレート系重合体は、タルクを含有すると好ましい。スパンボンド不織布に用いられるタルクの平均粒径（体積平均粒径）は、０．５〜３μｍであることが好ましい。３μｍ以下とすることにより、スパンボンド法によって紡糸する際に糸切れ等のトラブルが発生しにくいためである。また、０．５μｍ以上とすることにより、光の乱反射により白色化することを抑え、透明性の高い繊維を得ることができる。 The ethylene terephthalate polymer for obtaining a spunbonded non-woven fabric preferably contains talc. The average particle size (volume average particle size) of talc used in the spunbonded non-woven fabric is preferably 0.5 to 3 μm. This is because when the thickness is 3 μm or less, troubles such as yarn breakage are less likely to occur when spinning by the spunbond method. Further, by setting the thickness to 0.5 μm or more, whitening due to diffused reflection of light can be suppressed, and highly transparent fibers can be obtained.
エチレンテレフタレート系重合体に含有させるタルクの量は、多くとも１質量％であることが好ましい。すなわち１質量％以下含有させることにより、スパンボンド法にて不織布を製造する際、すなわち、エチレンテレフタレート系重合体を紡糸口金より紡出し、紡出糸条をエアーサッカーにて高速で牽引・細化する際の、紡糸性を向上させることができる。また、牽引・細化した後の開繊工程において、繊維同士が良好に開繊することができる。さらに、得られたスパンボンド不織布は、剛性が向上し、寸法安定性の良好なものとなる。好ましい含有量は、０．５質量％以下であり、さらには０．２質量％以下がより好ましい。一方、上記効果を奏するためには、タルクの含有量の下限は０．０１質量％がよい。反対に１質量％を超えて含有させると、紡糸性に問題が生じやすく、また、コスト的にも不利であり、しかも、所望する透光性が得られなくなる懸念が生じるという弊害が生じやすい。なお、エアーサッカーにて牽引する際の速度は、４５００ｍ／分以上であることが好ましい。 The amount of talc contained in the ethylene terephthalate polymer is preferably 1% by mass at most. That is, when a non-woven fabric is produced by the spunbond method by containing 1% by mass or less, that is, an ethylene terephthalate polymer is spun from a spinneret, and the spun yarn is towed and thinned at high speed by air soccer. It is possible to improve the spinnability at the time of spinning. In addition, the fibers can be satisfactorily opened in the fiber opening step after being pulled and thinned. Further, the obtained spunbonded non-woven fabric has improved rigidity and good dimensional stability. The preferable content is 0.5% by mass or less, and more preferably 0.2% by mass or less. On the other hand, in order to obtain the above effect, the lower limit of the talc content is preferably 0.01% by mass. On the other hand, if it is contained in an amount of more than 1% by mass, a problem of spinnability is likely to occur, a disadvantage is given in terms of cost, and there is a concern that the desired translucency cannot be obtained. The speed when towing with air soccer is preferably 4500 m / min or more.
エチレンテレフタレート系重合体にタルクを含有させる方法としては、タルクを含有させたマスターチップを用いることが好ましい。マスターチップが含有するタルクの量は、０．５〜５０質量％がよい。タルクは粉末状であることから、不織布の製造工程においてエチレンテレフタレート系重合体に粉末状のタルクを添加する方法では、タルクの添加量が少量であるため、エチレンテレフタレート系重合体とタルクとが良好に混ざり合うことが困難となり、重合体中にタルクが一様に分散して存在することが難しくなる。マスターチップを用いる際には、特に限定はしないが、（マスターチップ：エチレンテレフタレート系重合体のチップ）の比が１：１０〜１：５００程度であることが良く、１：３０〜１：２００程度がより好適で、これにより重合体中にタルクを一様に分散して存在させることができる。 As a method for adding talc to the ethylene terephthalate polymer, it is preferable to use a master chip containing talc. The amount of talc contained in the master chip is preferably 0.5 to 50% by mass. Since talc is in powder form, the method of adding powdered talc to the ethylene terephthalate polymer in the manufacturing process of the non-woven fabric is good for the ethylene terephthalate polymer and talc because the amount of talc added is small. It becomes difficult to mix with talc, and it becomes difficult for talc to be uniformly dispersed and present in the polymer. When the master chip is used, the ratio of (master chip: chip of ethylene terephthalate polymer) is preferably about 1: 10 to 1: 500, and is not particularly limited, and is 1:30 to 1:200. The degree is more preferred, which allows the talc to be uniformly dispersed and present in the polymer.
なお、本発明の効果を奏する範囲内において、農業用ハウスのカーテン用のスパンボンド不織布への要求性能にもとづいて、防炎剤、消臭剤、紫外線吸収剤、光安定剤、熱安定剤、酸化防止剤等の各種添加剤を添加してもよい。 In addition, within the range in which the effect of the present invention is exhibited, based on the required performance of spunbonded non-woven fabric for curtains of agricultural houses, flameproofing agents, deodorants, ultraviolet absorbers, light stabilizers, heat stabilizers, etc. Various additives such as antioxidants may be added.
本発明の農業用ハウスのカーテン用不織布は、塩化ビニールやポリオレフィン系等の樹脂フィルムと貼り合わせてカーテンを構成することもできる。このような貼り合わせ構造のカーテンは、特に農業用ハウスの側面と妻面とに好ましく用いることができ、不織布を作物側すなわちハウスの内面側に配置して用いることが好適である。そうすることで、結露が発生した場合には、その結露を保持して作物に悪影響が及ばないようにすることができる。また保温性を一段と向上することができる。さらに結露した水分を迅速に蒸散させることもできる。 The non-woven fabric for curtains of an agricultural house of the present invention can also be bonded to a resin film such as vinyl chloride or polyolefin to form a curtain. Such a bonded structure curtain can be particularly preferably used on the side surface and the end surface of the agricultural house, and it is preferable to arrange the non-woven fabric on the crop side, that is, on the inner surface side of the house. By doing so, when dew condensation occurs, it is possible to retain the dew condensation so that the crop is not adversely affected. Moreover, the heat retention can be further improved. Furthermore, the condensed water can be rapidly evaporated.
次に、実施例により本発明を具体的に説明する。なお、本発明は、以下の実施例によって何ら限定されるものではない。また、実施例における各特性値は、次のようにして求めたものである。 Next, the present invention will be specifically described with reference to Examples. The present invention is not limited to the following examples. Moreover, each characteristic value in an Example was obtained as follows.
（１）ポリエチレンテレフタレートの相対粘度（ηｒｅｌ）：フェノールと四塩化エタンとの当質量混合溶媒１００ｃｃに試料０．５ｇを溶解し、温度２０℃の条件で測定した。 (1) Relative viscosity of polyethylene terephthalate (ηrel): 0.5 g of a sample was dissolved in 100 cc of an equivalent mass mixed solvent of phenol and ethane tetrachloride, and the measurement was carried out under the condition of a temperature of 20 ° C.
（２）融点（℃）：パーキンエルマー社製の示差走査型熱量計「ＤＳＣ−７型」を用い、昇温速度２０℃／分で測定した。 (2) Melting point (° C.): Measured at a heating rate of 20 ° C./min using a differential scanning calorimeter "DSC-7 type" manufactured by PerkinElmer.
（３）構成繊維の長径／短径比：顕微鏡にて繊維の断面を１０本観察し、その長径と短径を測定して長径と短径との比を算出し、その平均値を比とした。 (3) Major axis / minor axis ratio of constituent fibers: Observe 10 cross sections of fibers with a microscope, measure the major axis and minor axis, calculate the ratio between major axis and minor axis, and use the average value as the ratio. did.
（４）構成繊維の繊度（デシテックス）：ＳＥＡＲＣＨ ＣＯ．ＬＴＤ製の「ＤＥＮＩＣＯＮ ＤＣ−２１」を使用して、試料長２５ｍｍで、本数１０本について測定し、平均値を繊度（ｄｔｅｘ）とした。 (4) Fineness of constituent fibers (decitex): SEARCH CO. Using "DENICON DC-21" manufactured by LTD, a sample length of 25 mm was measured for 10 samples, and the average value was taken as the fineness (dtex).
（５）目付（ｇ／ｍ２）：ＪＩＳ Ｌ １９１３に基づき測定した。 (5) Metsuke (g / m 2 ): Measured based on JIS L 1913.
（６）透光率（％）：ＪＩＳ Ｌ １９０６の５．１０に準じ、光源の照度を２０００ｌｘとして、試料数Ｎ＝５の平均値を透光率（％）とした。 (6) Translucency (%): According to 5.10 of JIS L 1906, the illuminance of the light source was 2000 lpx, and the average value of the number of samples N = 5 was defined as the translucency (%).
（７）通気度（ｃｃ／ｃｍ２／ｓｅｃ）：ＪＩＳ Ｌ １９１３の６．８．１のフラジール形法に準じ測定し、試料数Ｎ＝５の平均値を通気度とした。 (7) Air permeability (cc / cm 2 / sec): Measured according to the Frazier method of 6.8.1 of JIS L 1913, and the average value of the number of samples N = 5 was taken as the air permeability.
［実施例１〜４、比較例１〜４］
重合触媒に三酸化アンチモンを用い、融点２５５℃、相対粘度１．４１としたポリエチレンテレフタレート（ＰＥＴ）に、タルク（日本タルク社製「ＳＧ−２０００」 平均粒径(レーザー回析法)１．０μｍ）が５質量％含有しているマスターチップを用意した。このマスターチップと、ポリエチレンテレフタレート（重合触媒が三酸化アンチモン、融点２５５℃、相対粘度１．４１）のバージンチップとを、質量比で（マスターチップ）：（バージンチップ）＝１：９９の割合に混錬し、ポリエチレンテレフタレートにタルクが０．０５質量％含有するようにして、溶融紡糸した。
[Examples 1 to 4, Comparative Examples 1 to 4]
Polyethylene terephthalate (PET) having a melting point of 255 ° C. and a relative viscosity of 1.41 using antimony trioxide as a polymerization catalyst, and talc (“SG-2000” manufactured by Nippon Tarku Co., Ltd.) average particle size (laser diffraction method) 1.0 μm ) Was prepared in an amount of 5% by mass. This master chip and a virgin chip of polyethylene terephthalate (polymerization catalyst is antimony trioxide, melting point 255 ° C., relative viscosity 1.41) are mixed in a mass ratio of (master chip): (virgin chip) = 1:99. It was kneaded and melt-spun so that polyethylene terephthalate contained 0.05% by mass of talc.
すなわち、前記混練した重合体をエクストルーダー型溶融押出し機に供給し、繊維断面が楕円（扁平）形となる紡糸口金（長軸と短軸との比が１０：１）を通して、長繊維を溶融紡出した。溶融紡糸に際して、溶融温度を２８５℃、単孔吐出量を（ａ）１．６７ｇ／分と（ｂ）２．３９ｇ／分とに設定した。溶融紡出した糸状は、エアーサッカーにて牽引・細化し、公知の開繊器を用いて開繊させ、移動する捕集面上に堆積させて、それぞれ（ａ）３．４デシテックス、（ｂ）５．２デシテックスの長繊維不織ウェブとした。次いで、彫刻ロール（圧接面積率３７％、織目柄）と、平滑ロールとからなるエンボス装置に通し、熱圧着部を形成させて、それぞれ繊維量のみの目付が２０、３０、５０、７０ｇ／ｍ２のスパンボンド不織布を得た。 That is, the kneaded polymer is supplied to an extruder type melt extruder, and the long fibers are melted through a spinneret (the ratio of the major axis to the minor axis is 10: 1) having an elliptical (flat) fiber cross section. Spinned. At the time of melt spinning, the melt temperature was set to 285 ° C., and the single-hole discharge amount was set to (a) 1.67 g / min and (b) 2.39 g / min. The melt-spun filaments are towed and thinned by air soccer, opened using a known fiber-spreading device, and deposited on a moving collection surface, respectively (a) 3.4 decitex, (b). ) 5.2 Decitex long fiber non-woven web. Next, it was passed through an embossing device consisting of an engraving roll (pressure welding area ratio 37%, texture pattern) and a smoothing roll to form a thermocompression bonding portion, and the basis weights of only the fiber amount were 20, 30, 50, and 70 g / g, respectively. A spunbonded non-woven fabric of m 2 was obtained.
得られた不織布の物性を表１に示す。 Table 1 shows the physical characteristics of the obtained non-woven fabric.
吐出条件（ａ）の目付２０、３０ｇ／ｍ２品と、吐出条件（ｂ）の目付３０、５０ｇ／ｍ２品とは、本発明の実施例の不織布であった（実施例１〜４）。また、吐出条件（ｂ）の目付５０ｇ／ｍ２品は、目付が高くなったことから、透光率が６０％であり、カーテンとしては、内張りカーテンとして好適に使用できるものであった（実施例４）。これに対し、吐出条件（ｂ）の目付２０ｇ／ｍ２品は、透光率は高かったが、通気度が高すぎた（比較例３）。また、吐出条件（ａ）の目付５０、７０ｇ／ｍ２品及び吐出条件（ｂ）の目付７０ｇ／ｍ２品は、透光率が低く本発明の実施例の不織布ではなかった（比較例１、２、４）。 A basis weight 20,30g / m 2 dishes discharge conditions (a), and the basis weight 30,50g / m 2 dishes of ejecting conditions (b), was a non-woven fabric of embodiments of the present invention (Examples 1-4) .. In addition, the 50 g / m 2 product with a basis weight under the discharge condition (b) had a light transmittance of 60% because the basis weight was high, and could be suitably used as a lining curtain as a curtain (implementation). Example 4). On the other hand, the product having a basis weight of 20 g / m 2 under the discharge condition (b) had a high light transmittance, but the air permeability was too high (Comparative Example 3). Moreover, basis weight 70 g / m 2 dishes of basis weight 50,70g / m 2 dishes and discharge conditions of discharge conditions (a) (b), the light transmittance was not a non-woven fabric of embodiments of the present invention low (Comparative Example 1 2, 4).
［比較例５］
実施例１に比べて、繊維断面が円形の紡糸口金を通して長繊維を溶融紡出し、単孔吐出量を５．５５ｇ／分に設定し、１１．０デシテックスの長繊維不織ウェブとした点を相違させた。そして、それ以外は実施例１と同じとして、目付３０ｇ／ｍ ２ のスパンボンド不織布を得た。得られた不織布の物性を表１に示す。
[ Comparative Example 5 ]
Compared to Example 1, long fibers were melt-spun through a spinneret having a circular fiber cross section, the single-hole discharge rate was set to 5.55 g / min, and a long fiber non-woven web of 11.0 decitex was used. Made a difference. Then, a spunbonded non-woven fabric having a basis weight of 30 g / m 2 was obtained in the same manner as in Example 1 except for the above. Table 1 shows the physical characteristics of the obtained non-woven fabric.
比較例５の不織布は、目付３０ｇ／ｍThe non-woven fabric of Comparative Example 5 has a basis weight of 30 g / m. ２2 で透光率は高かったが通気度が高すぎ、本発明の実施例の不織布ではなかった。Although the light transmittance was high, the air permeability was too high, and it was not the non-woven fabric of the embodiment of the present invention.
［実施例５〜１０］
実施例１のマスターチップに比べ、タルク濃度のみを１０質量％に変更したマスターチップを用いた。このマスターチップとポリエチレンテレフタレートとの割合すなわち（マスターチップ）：（バージンチップ）を、質量比で、（Ａ）１：９９、（Ｂ）１：１９９、（Ｃ）３：１０００として、単孔吐出量２．３９ｇ／分で吐出し、その他の条件は実施例１と同じとして、繊維量の目付が２５ｇ／ｍ２、４０ｇ／ｍ２の不織布を得た。得られた不織布の物性を表２に示す。マスターチップの添加量に関わらず目付２５ｇ／ｍ２品は、透光率が７０％前後と高く、カーテンとしては、サイドカーテンとして好適に使用できるものであった（実施例５〜７）。また、目付４０ｇ／ｍ２品は、目付が高くなったことから、透光率が６０％あるいは６１％であり、カーテンとしては、内張りカーテンとして好適に使用できるものであった（実施例８〜１０）。
[Examples 5 to 10 ]
Compared with the master chip of Example 1, a master chip in which only the talc concentration was changed to 10% by mass was used. The ratio of this master tip to polyethylene terephthalate, that is, (master tip) :( virgin tip) is set to (A) 1:99, (B) 1: 199, and (C) 3: 1000 as a single-hole discharge. The non-woven fabric was discharged at an amount of 2.39 g / min, and the other conditions were the same as in Example 1, and a non-woven fabric having a fiber amount of 25 g / m 2 and 40 g / m 2 was obtained. Table 2 shows the physical characteristics of the obtained non-woven fabric. Regardless of the amount of the master chip added, the product with a basis weight of 25 g / m 2 had a high light transmittance of about 70%, and could be suitably used as a side curtain as a curtain (Examples 5 to 7 ). Moreover, basis weight 40 g / m 2 dishes, since the basis weight is increased, a light transmittance is 60% or 61%, as a curtain, were those which can be suitably used as a lining curtain (Example 8 10 ).
［実施例１１］
実施例６の不織布（マスターチップ（タルク濃度１０質量％）とポリエチレンテレフタレートとの質量比を１：１９９とした目付２５ｇ／ｍ２品）に、アクリル樹脂を１０ｇ／ｍ２コーティングした。得られた不織布の物性を表２に示す。実施例６の不織布に比べ透光率は低下したが、通気性は低くなり、十分な強度、耐久性を有するものであった。
[Example 11 ]
The non-woven fabric of Example 6 (25 g / m 2 products with a mesh size of 1: 199 by mass ratio of master chip (talc concentration 10% by mass) and polyethylene terephthalate) was coated with 10 g / m 2 of acrylic resin. Table 2 shows the physical characteristics of the obtained non-woven fabric. Although the light transmittance was lower than that of the non-woven fabric of Example 6 , the air permeability was low, and the non-woven fabric had sufficient strength and durability.
［実施例１２〜１５］
実施例１のマスターチップに比べ、タルク濃度のみを２０質量％に変更したマスターチップを用いた。このマスターチップとポリエチレンテレフタレートとの割合すなわち（マスターチップ）：（バージンチップ）を、質量比で、１：３９９とし、単孔吐出量を５．５５ｇ／分とした。そして、それ以外は実施例１と同様にして、単糸繊度９．０デシテックスで繊維量のみの目付２０、３０、４０、４８ｇ／ｍ２の不織布を得た。そして、そののちに、アクリル樹脂系のバインダーを含浸させ、それぞれトータルの目付が２２、３３、４４、５３ｇ／ｍ２の不織布とした（実施例１２〜１５）。得られた不織布の物性を表２に示す。いずれの不織布も、本発明の不織布としての物性を有するものであった。
[Examples 12 to 15 ]
Compared with the master chip of Example 1, a master chip in which only the talc concentration was changed to 20% by mass was used. The ratio of the master chip to polyethylene terephthalate, that is, (master chip) :( virgin chip) was set to 1: 399 by mass ratio, and the single-hole discharge rate was set to 5.55 g / min. Then, in the same manner as in Example 1 except for the above, a non-woven fabric having a single yarn fineness of 9.0 decitex and a basis weight of only the amount of fibers of 20, 30, 40, and 48 g / m 2 was obtained. Then, after that, an acrylic resin-based binder was impregnated into the non-woven fabric having a total basis weight of 22, 33, 44, and 53 g / m 2 , respectively (Examples 12 to 15 ). Table 2 shows the physical characteristics of the obtained non-woven fabric. All of the non-woven fabrics had the physical characteristics of the non-woven fabric of the present invention.
［実施例１６〜１９］
実施例１２と比べて、単孔吐出量を（ｉ）６．１１ｇ／分、（ｉｉ）７．３３ｇ／分に変更した。そして、それ以外は実施例１２と同様にして、単糸繊度がそれぞれ（ｉ）１１．７デシテックス、（ｉｉ）１４．２デシテックスで、繊維量のみの目付２７、５５ｇ／ｍ２の４種類の不織布を得た。そののちに、実施例１２〜１５で用いたバインダーを含浸して、目付３０、６０ｇ／ｍ２の４種類の不織布を得た（実施例１６〜１９）。得られた不織布の物性を表２に示す。いずれの不織布も、本発明の不織布としての物性を有するものであった。
[Examples 16 to 19 ]
Compared with Example 12 , the single-hole discharge amount was changed to (i) 6.11 g / min and (ii) 7.33 g / min. Other than that, in the same manner as in Example 12 , the single yarn fineness is (i) 11.7 decitex and (ii) 14.2 decitex, respectively, and there are four types of basis weights of only the fiber amount of 27 and 55 g / m 2. A non-woven fabric was obtained. Then, the binder used in Examples 12 to 15 was impregnated to obtain four kinds of non-woven fabrics having a basis weight of 30 and 60 g / m 2 (Examples 16 to 19 ). Table 2 shows the physical characteristics of the obtained non-woven fabric. All of the non-woven fabrics had the physical characteristics of the non-woven fabric of the present invention.
［比較例６］
ポリエチレンテレフタレートとして、重合触媒が三酸化アンチモンとトリエチルホスフェートと酢酸コバルトであり、融点が２５５℃、相対粘度が１．３８５、酸化チタンを０．４質量％含有したものを用いた。そして、タルクマスターチップを添加せずに、単孔吐出量を２．３９ｇ／分とし、それ以外は実施例１と同様にして、不織布を得た。そののちに、実施例１２〜１５で用いたバインダーを含浸して、目付５５ｇ／ｍ２の比較例６の不織布を得た。得られた不織布の物性を表２に示す。この不織布は、透光率が低いものであった。
[Comparative Example 6]
As the polyethylene terephthalate, those having antimony trioxide, triethyl phosphate and cobalt acetate as polymerization catalysts, having a melting point of 255 ° C., a relative viscosity of 1.385, and containing 0.4% by mass of titanium oxide were used. Then, the non-woven fabric was obtained in the same manner as in Example 1 except that the single-hole discharge rate was 2.39 g / min without adding the talc master chip. Then, the binder used in Examples 12 to 15 was impregnated to obtain a non-woven fabric of Comparative Example 6 having a basis weight of 55 g / m 2. Table 2 shows the physical characteristics of the obtained non-woven fabric. This non-woven fabric had a low light transmittance.
［実施例２０］
実施例１２に比べ、長軸と短軸との比が１５：１となる紡糸口金を通して、長繊維を溶融紡出させた点を変更した。そして、それ以外は実施例１２と同様にして、単糸繊度１１．６デシテックスで繊維量のみの目付４８ｇ／ｍ２の不織布を得た。そして、得られた不織布に、実施例１２〜１５で用いたのと同じバインダーを含浸させた。得られた不織布の物性を表２に示す。バインダーを含むトータルの目付は５５ｇ／ｍ２であった。この不織布は、長径と短径との比が１４であり、その比が８．５である実施例１２の不織布よりも通気性が抑えられ、しかも必要な透光率が得られた。
[Example 20 ]
Compared with Example 12 , the point that the long fibers were melt-spun through a spinneret having a ratio of the long axis to the short axis of 15: 1 was changed. Then, a non-woven fabric having a single yarn fineness of 11.6 decitex and a basis weight of only the amount of fibers of 48 g / m 2 was obtained in the same manner as in Example 12 except for the above. Then, the obtained non-woven fabric was impregnated with the same binder used in Examples 12 to 15. Table 2 shows the physical characteristics of the obtained non-woven fabric. The total basis weight including the binder was 55 g / m 2 . This non-woven fabric had a ratio of a major axis to a minor axis of 14, which was lower than that of the non-woven fabric of Example 12 in which the ratio was 8.5, and the required light transmittance was obtained.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015225233 | 2015-11-18 | ||
| JP2015225233 | 2015-11-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017093424A JP2017093424A (en) | 2017-06-01 |
| JP6905731B2 true JP6905731B2 (en) | 2021-07-21 |
Family
ID=58803001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016215779A Active JP6905731B2 (en) | 2015-11-18 | 2016-11-04 | Non-woven fabric for agricultural house curtains |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6905731B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7050278B2 (en) * | 2017-11-15 | 2022-04-08 | ユニチカ株式会社 | Non-woven fabric for gift wrap |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5974932A (en) * | 1982-10-22 | 1984-04-27 | ユニチカ株式会社 | Agricultural nonwoven sheet |
| JPH0361437A (en) * | 1989-07-28 | 1991-03-18 | Kuraray Co Ltd | Nonwoven fabric product for promotion of ripening |
| JPH08127952A (en) * | 1994-10-26 | 1996-05-21 | Unitika Ltd | High-strength network fiber nonwoven fabric and its production |
| JPH08127993A (en) * | 1994-10-26 | 1996-05-21 | Unitika Ltd | Wet nonwoven fabric and its production |
| JPH09119055A (en) * | 1995-10-25 | 1997-05-06 | Unitika Ltd | Heat-resistant composite nonwoven fabric and its production |
| JPH1118588A (en) * | 1997-07-04 | 1999-01-26 | Unitika Ltd | Agricultural nonwoven sheet |
| JPH11124760A (en) * | 1997-10-17 | 1999-05-11 | Teijin Ltd | Anisotropically lustrous nonwoven fabric |
| JP2002348764A (en) * | 2001-05-25 | 2002-12-04 | Unitica Fibers Ltd | Method for producing stretchable nonwoven fabric |
| JP3970625B2 (en) * | 2002-02-06 | 2007-09-05 | ユニチカ株式会社 | Spunbond nonwoven fabric comprising multifilament yarn and method for producing the same |
| JP5422874B2 (en) * | 2006-02-01 | 2014-02-19 | 東レ株式会社 | Nonwoven fabric for filter and method for producing the same |
| JP2008255528A (en) * | 2007-04-06 | 2008-10-23 | Unitika Ltd | Spun-bonded nonwoven fabric |
| JP5019991B2 (en) * | 2007-07-30 | 2012-09-05 | ユニチカ株式会社 | Method for producing spunlace composite nonwoven fabric |
| JP5354991B2 (en) * | 2008-08-20 | 2013-11-27 | ユニチカ株式会社 | Agricultural material, its manufacturing method, its usage |
| JP2012007275A (en) * | 2010-05-28 | 2012-01-12 | Unitika Ltd | Composite nonwoven sheet and method for manufacturing the same |
| JP5421199B2 (en) * | 2010-07-09 | 2014-02-19 | 日本エステル株式会社 | Wet short fiber nonwoven fabric |
| JP5812635B2 (en) * | 2011-03-18 | 2015-11-17 | ユニチカ株式会社 | Agricultural house materials |
| JP5912429B2 (en) * | 2011-11-09 | 2016-04-27 | ユニチカ株式会社 | Method of using agricultural sheet and agricultural sheet used therefor |
| JP5912574B2 (en) * | 2012-01-26 | 2016-04-27 | ユニチカ株式会社 | Method of using agricultural sheet and agricultural sheet used therefor |
| WO2015106359A1 (en) * | 2014-01-17 | 2015-07-23 | Lufa Farms, Inc. | Snow melting system and method for greenhouse |
-
2016
- 2016-11-04 JP JP2016215779A patent/JP6905731B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017093424A (en) | 2017-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2230689T3 (en) | DEGRADABLE POLYMER FIBERS; PREPARATION, PRODUCT AND PROCEDURE OF USE. | |
| TWI631245B (en) | Heat-bondable conjugate fiber, and producing method thereof, and nonwoven fabric using the same | |
| US20040170836A1 (en) | Hollow fiber fabrics | |
| CN101122065B (en) | Full-degradation lactic acid polymer spun-bonded continuous yarn non-woven fabrics and preparation method thereof | |
| CN105358107A (en) | Absorbent article containing a nonwoven web formed from porous polyolefin fibers | |
| JPWO2005080658A1 (en) | Synthetic short fibers for airlaid nonwovens | |
| TW200402485A (en) | Polyester staple fiber and nonwoven fabric comprising same | |
| CN109196150B (en) | Hot-melt conjugate fiber, method for producing same, sheet-like fiber assembly, and method for producing nonwoven fabric | |
| WO2018113767A1 (en) | Hollow polyester long fiber and preparation method therefor | |
| JP6905731B2 (en) | Non-woven fabric for agricultural house curtains | |
| TW201546341A (en) | Polyester binder fiber | |
| WO2007091665A1 (en) | Process for production of polyester fiber for air-laid nonwoven fabrics | |
| CN103122500A (en) | Split composite fiber and ultrafine fiber fabric manufactured from same | |
| KR102003890B1 (en) | Sheath Core Hollow Composite Fiber With Excellent Bending Strength | |
| JP5354991B2 (en) | Agricultural material, its manufacturing method, its usage | |
| JP5418936B2 (en) | Realized crimpable composite fiber and fiber assembly using the same | |
| TW202240038A (en) | Biologically degradable multi-component polymer fibres | |
| KR102003889B1 (en) | Sheath Core Hollow Composite Fiber Excellent In Bulky Property | |
| JPH06248511A (en) | Biodegradable fiber and cloth made of the fiber | |
| JP2019218664A (en) | Nonwoven fabric | |
| JP2019210591A (en) | Non-woven fabric for sash and manufacturing method thereof | |
| JPH06200462A (en) | Moisture-permeable-water-proof non-woven fabric | |
| JP2003231196A (en) | Discriminated sheet and its production method | |
| WO2021132411A1 (en) | Spun-bonded nonwoven fabric, multilayer filter medium, filter medium for pleated filters, and pleated filter | |
| JP2013170340A (en) | Fiber for air-laid nonwoven fabric and air-laid nonwoven fabric using the fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20191007 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200916 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200929 |
|
| A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20201127 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210126 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20210525 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210621 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6905731 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |