JP4767297B2 - Fruit bag base paper - Google Patents
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- JP4767297B2 JP4767297B2 JP2008234092A JP2008234092A JP4767297B2 JP 4767297 B2 JP4767297 B2 JP 4767297B2 JP 2008234092 A JP2008234092 A JP 2008234092A JP 2008234092 A JP2008234092 A JP 2008234092A JP 4767297 B2 JP4767297 B2 JP 4767297B2
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- 235000013399 edible fruits Nutrition 0.000 title claims description 50
- 239000003623 enhancer Substances 0.000 claims description 38
- 239000002585 base Substances 0.000 claims description 35
- 125000002091 cationic group Chemical group 0.000 claims description 23
- 125000000129 anionic group Chemical group 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 8
- 238000004513 sizing Methods 0.000 claims description 8
- 230000007935 neutral effect Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 229920006318 anionic polymer Polymers 0.000 claims description 3
- 229920006317 cationic polymer Polymers 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 229910001578 chloride mineral Inorganic materials 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000000123 paper Substances 0.000 description 112
- 239000000126 substance Substances 0.000 description 32
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 229920000877 Melamine resin Polymers 0.000 description 17
- 239000001993 wax Substances 0.000 description 16
- 239000004640 Melamine resin Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- 239000000835 fiber Substances 0.000 description 12
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 239000005871 repellent Substances 0.000 description 11
- 230000002940 repellent Effects 0.000 description 9
- 229920002401 polyacrylamide Polymers 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 7
- 239000004952 Polyamide Substances 0.000 description 7
- 229920001131 Pulp (paper) Polymers 0.000 description 7
- 239000002655 kraft paper Substances 0.000 description 7
- 229920002647 polyamide Polymers 0.000 description 7
- 239000000975 dye Substances 0.000 description 6
- 239000000049 pigment Substances 0.000 description 6
- 238000010009 beating Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 5
- 229910017053 inorganic salt Inorganic materials 0.000 description 5
- 239000013054 paper strength agent Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 239000011122 softwood Substances 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- -1 yield improvers Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 229920006122 polyamide resin Polymers 0.000 description 3
- 244000144730 Amygdalus persica Species 0.000 description 2
- 244000241257 Cucumis melo Species 0.000 description 2
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 2
- 244000141359 Malus pumila Species 0.000 description 2
- 235000006040 Prunus persica var persica Nutrition 0.000 description 2
- 241000220324 Pyrus Species 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 241000219094 Vitaceae Species 0.000 description 2
- MBHRHUJRKGNOKX-UHFFFAOYSA-N [(4,6-diamino-1,3,5-triazin-2-yl)amino]methanol Chemical compound NC1=NC(N)=NC(NCO)=N1 MBHRHUJRKGNOKX-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 235000021016 apples Nutrition 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 235000021021 grapes Nutrition 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000012860 organic pigment Substances 0.000 description 2
- 235000021017 pears Nutrition 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 150000003440 styrenes Chemical class 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- 244000061508 Eriobotrya japonica Species 0.000 description 1
- 235000009008 Eriobotrya japonica Nutrition 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229940125368 controlled substance Drugs 0.000 description 1
- 239000000599 controlled substance Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
Landscapes
- Protection Of Plants (AREA)
- Paper (AREA)
Description
本発明は果実袋原紙および果実袋に関し、詳しくは、りんご、梨、桃、ぶどう、びわ、メロンなどの果実栽培において、成育中の果実を鳥、病害虫、直射日光及び風雨等から保護し、果実の外観（肌）を美しくするための果実袋用原紙に関する。 The present invention relates to a fruit bag base paper and a fruit bag. More specifically, in fruit cultivation such as apples, pears, peaches, grapes, loquats and melons, the growing fruits are protected from birds, pests, direct sunlight, wind and rain, etc. It is related with the base paper for fruit bags for making the appearance (skin) beautiful.
果実袋は、従来から新聞紙、ワックス加工紙、撥水加工紙、塩化ビニールシート等を単独あるいは複数層複合して、袋状あるいは笠状に成形加工して用いられている。しかしながら、果実の成育期間（果実の種類・品種によっても異なるが、一般的には２〜４ヶ月程度と考えられる）に雨、風、日光にさらされても果実の生育に影響がないよう、その間撥水性が持続し、果実を保護する耐久性があることが求められることから、それらの要求を満たす紙としてワックス加工紙や撥水加工紙が特によく用いられる。 Conventionally, fruit bags have been used by forming into a bag shape or a shade shape by combining newspaper paper, wax processed paper, water repellent processed paper, vinyl chloride sheet or the like alone or in combination with a plurality of layers. However, so that it does not affect the fruit growth even if it is exposed to rain, wind and sunlight during the fruit growing period (depending on the kind and variety of the fruit but generally considered to be about 2 to 4 months) In the meantime, since water repellency persists and it is required to have durability for protecting fruits, wax-treated paper and water-repellent treated paper are particularly often used as paper satisfying those requirements.
また、ワックス加工紙や撥水加工紙の原紙は、果実袋原紙と呼ばれる。果実袋原紙は、ワックス加工や撥水剤加工、袋成形等の各加工工程で破れたり裂けたりしないことはいうまでもなく、果実袋として使用している間も破れたりしない強度が必要とされる。 Further, the base paper of the wax processed paper or the water repellent processed paper is called a fruit bag base paper. Fruit bag base paper is not torn or torn in each processing step such as wax processing, water repellent processing, bag molding, etc., but it must be strong enough not to be torn while being used as a fruit bag. The
一般に、強度の高い原紙を得ようとすると紙力増強剤や湿潤紙力増強剤を相当量添加することが必要となり、その場合、コストの高いものとなってしまうばかりでなく、湿潤紙力剤の一部で人体に対する有害性が指摘されている。 In general, in order to obtain a base paper having high strength, it is necessary to add a considerable amount of a paper strength enhancer or a wet strength enhancer. In this case, not only the cost becomes high but also the wet strength paper In some cases, harmful to the human body has been pointed out.
たとえば、特開平７−２３１７２８号公報には、パルプ繊維に対して、有機顔料および弁柄からなる着色顔料を１〜５重量％添加含有せしめ、かつ有機顔料に対する弁柄の配合比を５〜６０重量％とした果実袋用原紙が提案されている。この果実袋用原紙にはパラフィン系ワックスやスチレンまたはスチレン誘導体とビニル系モノマーとの共重合物、塩素化パラフィン等の撥水剤を付与することが好ましいとされ、実施例には、紙料に湿潤紙力増強剤としてメラミン樹脂が内添されることが記載されている。 For example, Japanese Patent Application Laid-Open No. 7-231728 discloses that 1 to 5% by weight of a color pigment composed of an organic pigment and a petrol is added to pulp fibers, and the blending ratio of the petrol to the organic pigment is 5 to 60. A paper bag for fruit bags in weight percent has been proposed. It is preferable that a water repellent such as paraffin wax, a copolymer of styrene or a styrene derivative and a vinyl monomer, or a chlorinated paraffin is added to the base paper for fruit bags. It is described that a melamine resin is internally added as a wet paper strength enhancer.
特開平６−１５３７１２号公報には、木材パルプを主成分として抄造され、湿潤引張強度が０．２ｋｇｆ／１５ｍｍ以上、透気度が７０００ｇ／ｍ２・２４ｈ以上、光線透過量が１５００〜３０００ルクスであるアールスメロン用笠かけ栽培用紙が提案されている。本公報では、水に濡れても形状を保持できる湿潤強度として０．２ｋｇｆ／１５ｍｍ以上の強度が必要であり、この強度を得るためにメラミン樹脂、尿素樹脂、ポリアミド・エピクロルヒドリン樹脂、ポリアクリルアミド系樹脂等の湿潤紙力増強剤を、通常パルプ乾燥重量に対して０．２重量％以上添加する必要があることが記載されている。 In JP-A-6-153712, wood pulp is used as a main component, wet tensile strength is 0.2 kgf / 15 mm or more, air permeability is 7000 g / m 2 · 24 h or more, and light transmission is 1500 to 3000 lux. The paper for cultivation of the earl for melon is proposed. In this publication, a strength of 0.2 kgf / 15 mm or more is necessary as a wet strength that can maintain the shape even when wet, and in order to obtain this strength, melamine resin, urea resin, polyamide / epichlorohydrin resin, polyacrylamide resin It is described that it is necessary to add a wet paper strength enhancer such as 0.2% by weight or more to the dry weight of pulp.
しかし、湿潤増強剤が多く使用されたり、メラミン樹脂や尿素樹脂系薬品は、湿潤紙力や耐久性の向上については極めて効果は高いものの、近年それらの人体に対する発ガン性等の有害性が指摘され、法規制も強まり、使用に際してはより厳しい制限がかかるようになってきた。 However, a lot of wetting enhancers are used, and melamine resin and urea resin chemicals are extremely effective in improving wet paper strength and durability, but in recent years they have been pointed out as harmful to their human bodies such as carcinogenicity. However, regulations have been strengthened, and stricter restrictions have been imposed on use.
特に、メラミン樹脂の使用は、紙料調成等の製造時現場においても、更に熱のかかる乾燥工程のマシンのドライヤー内等では、一時的にホルムアルデヒド濃度が高まる場合があり、作業環境の面からも好ましくなかった。 In particular, the use of melamine resin may temporarily increase the formaldehyde concentration in the dryer of the machine in the drying process where heat is applied, even at the production site such as paper preparation. Was also not preferable.
２００８年３月１日から、安全衛生法で、ホルムアルデヒドが特定化学物質の第３類から、第２類に格上げされ、かつ、特別管理物質に指定され、作業の記録等が義務付けられるとともに、住宅等の建築分野でも、メラミン樹脂を使用した内装材が、その有害性が指摘されており、脱ホルマリン化は、産業界全体の流れになってきている。
本発明は、ホルマリンを発生しない湿潤紙力増強剤を用い、優れた湿潤紙力効果を有し、ワックス加工性や撥水加工性にも優れた果実袋原紙を提供することにある。 It is an object of the present invention to provide a fruit bag base paper having a wet paper strength effect using a wet paper strength enhancer that does not generate formalin, and having excellent wax processability and water repellency.
（１）湿潤紙力増強剤と中性サイズ剤を内添して抄紙された果実袋原紙において、湿潤紙力剤増強剤として、カチオン性湿潤紙力増強剤とアニオン性湿潤紙力増強剤を併用し、かつ、定着剤として、化学式〔Ａｌ２（ＯＨ）ｎＣｌ６−ｎ〕ｍで表される無機塩の塩化アルミニウムを使用し、中性サイズ剤を内添したことを特徴とする果実袋用原紙。
（２）カチオン性ポリマーの配合量をアニオン性ポリマーに対して、固形分比で０．８〜１．３倍量とした（１）記載の果実袋用原紙。
(1) In a fruit bag base paper made by adding a wet paper strength enhancer and a neutral sizing agent, a cationic wet paper strength enhancer and an anionic wet paper strength enhancer are used as the wet paper strength enhancer. A fruit characterized by using an aluminum salt of an inorganic salt represented by the chemical formula [Al 2 (OH) n Cl 6-n ] m as a fixing agent and internally adding a neutral sizing agent. Base paper for bags.
(2) The base paper for fruit bags according to (1), wherein the blending amount of the cationic polymer is 0.8 to 1.3 times the solid content ratio with respect to the anionic polymer.
本発明で使用する木材パルプは特に限定されず、通常用いられている製紙用木材パルプを使用できる。たとえば針葉樹あるいは広葉樹を用いたサルファイトパルプ、クラフトパルプ、ソーダパルプ等のケミカルパルプ、セミケミカルパルプ、メカニカルパルプ等が挙げられ、未晒パルプの状態で使用してもよく、晒パルプを使用しても良い。また、古紙を処理して製造される脱墨パルプを使用しても良い。さらにこれらパルプは、単独で使用してもよく、複数種類混合して使用しても良い。 The wood pulp used in the present invention is not particularly limited, and commonly used wood pulp for papermaking can be used. Examples include chemical pulp such as sulfite pulp, kraft pulp, soda pulp, semi-chemical pulp, mechanical pulp, etc. using softwood or hardwood, and it may be used in the unbleached pulp state. Also good. Moreover, you may use the deinked pulp manufactured by processing a waste paper. Furthermore, these pulps may be used alone or in combination.
果実汚染性を極力抑え、人体に悪影響を及ぼさず、しかも耐水強度を高めることができる湿潤紙力増強剤をパルプ繊維スラリーに添加する。本発明においては、湿潤紙力増強剤としては、カチオン性のものとアニオン性のものを併用する。カチオン性湿潤紙力増強剤としては、カチオン性エポキシ樹脂、ポリアミド・エピクロロヒドリン樹脂、ポリアミン・エピクロロヒドリン樹脂、あるいは、カチオン性ポリアミド樹脂等の耐水性を付与できるカチオン性ポリマーを用いる。カチオン性が強くなり過ぎるため、アニオン性湿潤紙力増強剤と組み合わせてイオンバランスをとることにより湿潤紙力が向上する。アニオン性紙力増強剤としては、アニオン性ポリアクリルアミド、変性ポリアクリルアミド樹脂などが使用できる。 A wet paper strength enhancer that suppresses fruit contamination as much as possible, does not adversely affect the human body, and can increase water resistance is added to the pulp fiber slurry. In the present invention, as the wet paper strength enhancer, a cationic one and an anionic one are used in combination. As the cationic wet paper strength enhancer, a cationic polymer capable of imparting water resistance such as a cationic epoxy resin, a polyamide / epichlorohydrin resin, a polyamine / epichlorohydrin resin, or a cationic polyamide resin is used. Since the cationic property becomes too strong, wet paper strength is improved by taking ion balance in combination with an anionic wet paper strength enhancer. Anionic polyacrylamide, modified polyacrylamide resin, and the like can be used as the anionic paper strength enhancer.
本発明においては、更にカチオン性定着剤として、化学式〔Ａｌ２（ＯＨ）ｎＣｌ６−ｎ〕ｍで表される無機塩の塩化アルミニウムを使用することにより、耐水性が格段に向上することを見出した。 In the present invention, the use of an inorganic salt aluminum chloride represented by the chemical formula [Al 2 (OH) n Cl 6-n ] m as a cationic fixing agent further improves water resistance. I found it.
メラミン樹脂は、メチロールメラミンを加工品原料としているが、メチロールメラミンは加熱すると重縮合を起こし、網目状に架橋することで、引張強さや耐摩耗性をはじめ、耐水性にすぐれた熱硬化樹脂となる。 Melamine resin uses methylol melamine as a raw material for processed products, but methylol melamine undergoes polycondensation when heated, and crosslinks in a network form to provide thermosetting resin with excellent water resistance, including tensile strength and abrasion resistance. Become.
一方、ノンホルマリンであるエポキシ樹脂類も、アミン類の硬化剤との反応により不溶の三次元硬化物となり、機械的強度や耐磨耗性はもとより耐水性を備えた高機能樹脂として広汎な用途に利用されている。しかしながら、紙への利用では、エポキシ樹脂系やエピクロロヒドリン系のノンホルマリンタイプの樹脂の耐水強度は、メラミン樹脂の半分程度しか発現できていなかった。さらにアニオン性のポリアクリルアミド系紙力剤を併用することによって強度を上げても、メラミン樹脂並みの湿潤紙力効果を発現させることができなかった。 On the other hand, epoxy resins that are non-formalin also become insoluble three-dimensional cured products by reaction with curing agents of amines, and are widely used as high-performance resins with water resistance as well as mechanical strength and abrasion resistance Has been used. However, when used for paper, the water resistance of epoxy resin-based and epichlorohydrin-based non-formalin type resins was only about half that of melamine resins. Furthermore, even if the strength was increased by using an anionic polyacrylamide type paper strength agent in combination, the wet strength effect similar to that of melamine resin could not be expressed.
化学式〔Ａｌ２（ＯＨ）ｎＣｌ６−ｎ〕ｍで表される無機塩の塩化アルミニウムを使用してはじめて、エピクロロヒドリン系等のカチオン性樹脂とアニオン性ポリマーの紙への定着率を高め、さらに両薬品がネットワークを構成し、その相乗効果によって、メラミン樹脂と同等レベルの湿潤紙力強度を発現できた。
上記化学式において、ｎは１〜５、ｍは１０以下の整数である。
Chemical formula [Al 2 (OH) n Cl 6-n ] For the first time, using an inorganic salt aluminum chloride represented by m , the fixing rate of an epichlorohydrin-based cationic resin and an anionic polymer to paper is determined. In addition, both chemicals formed a network, and the synergistic effect of the two chemicals allowed us to express the same level of wet paper strength as melamine resin.
In the above chemical formula, n is 1 to 5, and m is an integer of 10 or less.
カチオン性紙力剤とアニオン性紙力剤の有効成分比率を１：１にした場合に、もっとも優れた湿潤紙力強さが得られる。これは、カチオン性の湿潤紙力剤が、アニオン性紙力剤とコポリマーを形成し、湿潤紙力剤単独以上の強度を発現するためと考えられる。 The best wet paper strength can be obtained when the active ingredient ratio of the cationic paper strength agent and the anionic strength material is 1: 1. This is presumably because the cationic wet strength agent forms a copolymer with the anionic strength agent and exhibits a strength higher than that of the wet strength force alone.
本発明における紙力剤の添加量は、カチオン性、アニオン性いずれの場合も各々、パルプ繊維の種類、紙の種類、用途、要求される性能等に応じて変えられるが、パルプ繊維の乾燥重量に対して０．７〜１．２％、好ましくは０．８〜１．０％である。
０．７％より少ないと、十分な湿潤紙力が発現できず、１．２％を超えると抄紙機に汚れが発生するため好ましくない。
The addition amount of the paper strength agent in the present invention can be changed depending on the type of pulp fiber, the type of paper, the application, the required performance, etc. in both cases of cationic and anionic, but the dry weight of pulp fiber Is 0.7 to 1.2%, preferably 0.8 to 1.0%.
If it is less than 0.7%, sufficient wet paper strength cannot be exhibited, and if it exceeds 1.2%, dirt is generated in the paper machine.
カチオン性の紙力剤単独使用でも湿潤紙力が得られるが、本発明の湿潤紙力強さには至らない。また、アニオン性紙力剤と併用した場合には、パルプ繊維への定着剤が別途必要となり、酸性抄紙で使用される硫酸バンド系では、カチオン性紙力剤とアニオン性紙力剤のコポリマーの形成を阻害するため、本発明の湿潤紙力強さには至らない。 Wet paper strength can be obtained by using a cationic paper strength agent alone, but the wet strength of the present invention is not reached. In addition, when used in combination with an anionic strength agent, a fixing agent for pulp fibers is required. In the sulfuric acid band system used in acidic papermaking, a copolymer of a cationic strength agent and an anionic strength agent is used. Since the formation is inhibited, the wet paper strength of the present invention is not reached.
本発明においては、前記した製紙用紙力増強剤の他に、製紙用サイズ剤と定着剤、填料、顔料、歩留まり向上剤、染料、消泡剤、防腐剤、粘度調整剤等の公知の抄紙薬品を適宜選択して用いられ、必要に応じて併用添加することができる。 In the present invention, in addition to the aforementioned papermaking paper strength enhancer, known papermaking chemicals such as papermaking sizing agents and fixing agents, fillers, pigments, yield improvers, dyes, antifoaming agents, preservatives, viscosity modifiers, etc. Are appropriately selected and used, and can be used in combination as required.
特に染料、顔料については、果実袋として使用する際に、作物に応じて光透過性能を必要な値にコントロールし、その目的に応じ適宜選択して使用する。たとえば、りんごなどでは、濃色の赤、青等の色相で使用される場合が多く、梨、桃、ぶどう等の栽培では淡色あるいは染料等の添加による着色なしに使用される場合が多い。本発明に係る果実袋原紙は、使用する果実の種類により、必要に応じて適宜染料、顔料等を添加・着色して使用する。これら染料、顔料等の添加は、従来公知の方法にて添加し、その配合、量は、所望する色相，濃度に応じて適宜調整することができる。 In particular, when using dyes and pigments as fruit bags, the light transmission performance is controlled to a necessary value according to the crop, and the dyes and pigments are appropriately selected according to the purpose. For example, apples are often used in shades of dark red, blue, etc., and in cultivation of pears, peaches, grapes, etc., they are often used in light colors or without coloring by adding dyes or the like. The fruit bag base paper according to the present invention is used by appropriately adding and coloring dyes, pigments, and the like as necessary depending on the kind of fruit to be used. These dyes, pigments and the like are added by a conventionally known method, and the blending and amount thereof can be appropriately adjusted according to the desired hue and concentration.
本発明の果実袋原紙の製造は、公知の湿式抄紙機、例えば長網式抄紙機、ギャップフォーマ型抄紙機、円網式抄紙機、短網式抄紙機等抄紙機が使用可能である。 For producing the fruit bag base paper of the present invention, a known wet paper machine such as a long net paper machine, a gap former type paper machine, a circular net paper machine, or a short net paper machine can be used.
また原紙の坪量は、果実育成袋に作製する際の製袋作業性や、製袋した袋を果実に袋掛けしたり、除袋したりする育成作業性の観点から、３４〜１５０ｇ／ｍ２ の範囲が望ましい。坪量が３４ｇ／ｍ２ より低いと、製袋作業や栽培現場での育成作業において十分な強度が得られず、１５０ｇ／ｍ２ を超えると硬すぎて紙の柔軟性が悪くなるため製袋作業における打ち抜き工程が困難となり、育成作業における袋掛けや除袋の作業性が低下する。 In addition, the basis weight of the base paper is 34 to 150 g / m from the viewpoint of bag-making workability when making it into a fruit-growing bag, and the workability of bag-making and unbagging the bag-made bag. A range of 2 is desirable. If the basis weight is lower than 34 g / m 2 , sufficient strength cannot be obtained in bag making work or growing work at the cultivation site, and if it exceeds 150 g / m 2 , the paper becomes too hard and the paper becomes poor in flexibility. The punching process in the work becomes difficult, and the workability of bag hanging and bag removal in the growing work is lowered.
こうして得られる果実袋原紙は、各種サイズプレス塗工或いはロール塗工、スプレー塗工、含浸加工等によりワックス処理あるいは撥水処理の加工が行われる。使用するワックス、撥水剤としては公知のものを使用することができる。たとえばパラフィン系ワックス、スチレンまたはスチレン誘導体とビニルモノマーとの共重合物、塩素化パラフィン、ナフテン酸コバルト、ジルコニウム化合物、アルキルケテンダイマーなどが挙げられる。 The fruit bag base paper thus obtained is subjected to wax treatment or water repellent treatment by various size press coating or roll coating, spray coating, impregnation processing and the like. Known waxes and water repellents can be used. Examples thereof include paraffinic wax, a copolymer of styrene or a styrene derivative and a vinyl monomer, chlorinated paraffin, cobalt naphthenate, a zirconium compound, and an alkyl ketene dimer.
本発明の果実袋用原紙の場合、一般に生育期間中の果実の袋掛けの期間は２〜４カ月必要である。袋の撥水効果が１カ月前後でなくなると、果実が雨の影響を受け、果実の生育や商品価値の低下を招く。 In the case of the base paper for fruit bags of the present invention, generally, the fruit bagging period is 2 to 4 months during the growing period. If the water-repellent effect of the bag disappears after about one month, the fruit is affected by rain, leading to fruit growth and a decline in commercial value.
ワックスや撥水剤の塗布量は一般に、１．０〜２．０ｇ／ｍ２ である。１．０ｇ／ｍ２ より少ないと撥水性が不足し、果実の生育や商品価値に影響を及ぼし、２．０ｇ／ｍ２より多くしても、撥水効果はそれ程向上しないため、コスト的に不利となる。 The application amount of wax or water repellent is generally 1.0 to 2.0 g / m 2 . If it is less than 1.0 g / m 2 , the water repellency will be insufficient, affecting the growth of fruits and commercial value, and if it is more than 2.0 g / m 2 , the water repellency will not be improved so much. It will be disadvantageous.
本発明の果実袋原紙は、紙力増強剤や湿潤紙力増強剤、さらにその他に添加される各種薬品の紙中分布の均一性が高く、強度、吸液性等のばらつきが少ないため、ワックス処理や撥水処理の加工工程の際に均一に処理することが可能である。 The fruit bag base paper of the present invention has high uniformity in paper distribution of paper strength enhancer, wet strength enhancer, and other chemicals added to the paper, and less variation in strength, liquid absorbency, etc. It is possible to treat uniformly during the processing step of the treatment or the water repellent treatment.
本発明の果実袋原紙は、ＪＩＳ Ｐ８１３５に準じて測定した湿潤引張強度が、０．５ｋＮ／ｍ以上であることが必要で、０．９ｋＮ／ｍ以上あることが好ましい。０．５ｋＮ／ｍ未満であると、ワックス処理、撥水処理時に破断する可能性が高く、製品化できたとしても雨風で破れ易くなり、果実袋としての機能が十分に果たせなくなる。 The fruit bag base paper of the present invention needs to have a wet tensile strength measured according to JIS P8135 of 0.5 kN / m or more, and preferably 0.9 kN / m or more. If it is less than 0.5 kN / m, there is a high possibility of breaking during wax treatment and water repellent treatment, and even if it can be commercialized, it will be easily broken by rain and wind, and the function as a fruit bag will not be fully achieved.
実施例１
ＤＤＲ叩解機を用いて、カナダ標準フリーネス（ＣＳＦ）３５０ｍＬに叩解した針葉樹晒クラフトパルプ３．８％濃度のパルプ繊維スラリーを得た。このパルプ繊維スラリーに、アニオン系の紙力増強剤として、ポリアクリルアミドを成分とする薬品（商品名：ポリストロン１１７、荒川化学製）をパルプ重量に対して０．９％、カチオン系の湿潤紙力増強剤として、ポリアミドを成分とする薬品（商品名：アラフィックス２５５、荒川化学製）０．９％、中性サイズ剤としてアルキルケテンダイマー（商品名：サイズパインＫ−９０３、荒川化学製）０．３％、化学式〔Ａｌ２（ＯＨ）ｎＣｌ６−ｎ〕ｍで表される無機塩の塩化アルミニウム（商品名：Ｐａｈｏ＃２Ｓ、浅田化学工業製）０．１２％を配合し、前記の順で添加し紙料とした。
Example 1
Using a DDR beating machine, a 3.8% concentration pulp fiber slurry of softwood bleached kraft pulp beaten to 350 mL of Canadian Standard Freeness (CSF) was obtained. To this pulp fiber slurry, an anionic paper strength enhancer, a chemical containing polyacrylamide as a component (trade name: Polystron 117, manufactured by Arakawa Chemical Co., Ltd.), 0.9% of the pulp weight, cationic wet paper As a force enhancer, a chemical containing polyamide as a component (trade name: Arafix 255, manufactured by Arakawa Chemical) 0.9%, as a neutral sizing agent, an alkyl ketene dimer (trade name: Size Pine K-903, manufactured by Arakawa Chemical) 0.3%, aluminum salt of an inorganic salt represented by the chemical formula [Al 2 (OH) n Cl 6-n ] m (trade name: Paho # 2S, manufactured by Asada Chemical Industries) 0.12%, The materials were added in this order to make paper.
この紙料を用いて、長網抄紙機で３６．５坪量ｇ／ｍ２の紙を抄紙し、その後塗工設備にて、ワックス（商品名：ＨＡ−５４１、荒川化学製）を１．５ｇ／ｍ２塗布乾燥して、果実袋用の３８ｇ／ｍ２原紙を得た。
下記項目について、ワックス塗布後の原紙品質を評価し、結果を表１に示した。
Using this stock, a paper of 36.5 basis weight g / m 2 is made with a long paper machine, and then a wax (trade name: HA-541, manufactured by Arakawa Chemical Co., Ltd.) is used in the coating equipment. 5 g / m 2 was applied and dried to obtain 38 g / m 2 base paper for fruit bags.
For the following items, the quality of the base paper after wax application was evaluated, and the results are shown in Table 1.
（１）坪量： ＪＩＳ Ｐ８１２４に準じて測定し、（ｇ／ｍ２）で表した。
（２）厚さ：ＪＩＳ Ｐ８１１８に準じて測定し、（μｍ）で表した。
（３）引張強度（ＭＤ方向）：ＪＩＳ Ｐ８１１３に準じて測定し、（ｋＮ／ｍ）で表した。
（４）湿潤引張強度（ＭＤ方向）：ＪＩＳ Ｐ８１３５に準じて湿潤状態とした試料を、ＪＩＳ Ｐ８１１３の引張強度測定法に準じて測定し、（ｋＮ／ｍ）で表した。
(1) Basis weight: Measured according to JIS P8124 and expressed in (g / m 2 ).
(2) Thickness: Measured according to JIS P8118 and expressed in (μm).
(3) Tensile strength (MD direction): Measured according to JIS P8113 and expressed in (kN / m).
(4) Wet tensile strength (MD direction): A sample made wet according to JIS P8135 was measured according to the tensile strength measurement method of JIS P8113 and expressed in (kN / m).
実施例２
カチオン系の湿潤紙力増強剤として、ポリアミン・エピクロロヒドリンを成分とする薬品（商品名：ＷＳ４０１０、星光ＰＭＣ製）をパルプ重量に対して０．９％、無機塩の塩化アルミニウムを０．１５％添加、中性サイズ剤としてアルケニル無水コハク酸（商品名：ＡＳ１５３２、星光ＰＭＣ製）を０．３％添加した以外は実施例１と同様にして紙料とした。
Example 2
As a cationic wet paper strength enhancer, a chemical containing polyamine and epichlorohydrin (trade name: WS4010, manufactured by Seiko PMC) is 0.9% with respect to the pulp weight, and aluminum chloride, an inorganic salt, is added in an amount of 0.1%. A paper stock was prepared in the same manner as in Example 1, except that 15% addition and 0.3% alkenyl succinic anhydride (trade name: AS1532, manufactured by Seiko PMC) were added as a neutral sizing agent.
この紙料を用いて、長網抄紙機で３３．５坪量ｇ／ｍ２の紙を抄紙し、塗工設備にて、ワックス（商品名：ＨＡ−５４１、荒川化学製）を１．５ｇ／ｍ２塗布乾燥して、果実袋用の３５ｇ／ｍ２原紙を得た。
品質を実施例１と同様に評価し、結果を表１に示す。
Using this stock, paper of 33.5 basis weight g / m 2 was made with a long paper machine and 1.5 g of wax (trade name: HA-541, manufactured by Arakawa Chemical Co., Ltd.) was applied at the coating equipment. / M 2 was applied and dried to obtain 35 g / m 2 base paper for fruit bags.
Quality was evaluated in the same manner as in Example 1, and the results are shown in Table 1.
実施例３
実施例１で用いた針葉樹晒クラフトパルプと、ＤＤＲ叩解機を用いて、カナダ標準フリーネス（ＣＦＳ）３５０ｍＬに叩解した広葉樹晒クラフトパルプを重量比７：３に混合した４％濃度のパルプ繊維スラリーに、カチオン系の湿潤紙力増強剤としてポリアミドエポキシ樹脂を成分とした薬品（商品名：スパラミン３０、東邦化学工業製）をパルプ重量に対して０．８％、アニオン系紙力増強剤としてポリアクリルアミドを成分とする薬品（実施例１と同じ）を０．８％添加した以外は実施例１と同様にして果実袋原紙を作成し、品質を評価し、結果を表１に示した。
Example 3
Using a softwood bleached kraft pulp used in Example 1 and a hardwood bleached kraft pulp beaten to 350 mL of Canadian Standard Freeness (CFS) using a DDR beating machine, a 4% concentration pulp fiber slurry was mixed at a weight ratio of 7: 3. , A chemical based on polyamide epoxy resin as a cationic wet paper strength enhancer (trade name: Sparamin 30, manufactured by Toho Chemical Co., Ltd.) 0.8% of the pulp weight, polyacrylamide as an anionic paper strength enhancer A fruit bag base paper was prepared in the same manner as in Example 1 except that 0.8% of a chemical containing the ingredient (same as in Example 1) was added, the quality was evaluated, and the results are shown in Table 1.
実施例４
カチオン系の湿潤紙力増強剤としてエポキシ変性ポリアミドを成分とする薬品（商品名：ハーマイドＰＹ−５２５Ａ、ハリマ化成製）をパルプ重量に対して１．０％と、アニオン系紙力増強剤としてポリアクリルアミドを成分とする薬品を１．０％添加した以外は実施例２と同様にして紙料を得た。
Example 4
A chemical containing epoxy-modified polyamide as a cationic wet paper strength enhancer (trade name: Hermide PY-525A, manufactured by Harima Kasei Co., Ltd.) is 1.0% based on pulp weight, and an anionic paper strength enhancer A paper stock was obtained in the same manner as in Example 2 except that 1.0% of a chemical containing acrylamide was added.
この紙料を用いて、長網抄紙機で坪量４２．５ｇ／ｍ２の紙を抄紙し、塗工設備にて、ワックス（商品名：ＨＡ−５４１、荒川化学製）を１．５ｇ／ｍ２塗工して、果実袋用の４４ｇ／ｍ２原紙を得た。品質を実施例１と同様に評価し、結果を表１に示す。 Using this stock, paper with a basis weight of 42.5 g / m 2 was made with a long paper machine, and wax (trade name: HA-541, manufactured by Arakawa Chemical Co., Ltd.) 1.5 g / and m 2 applied to give 44 g / m 2 base paper for fruit bags. Quality was evaluated in the same manner as in Example 1, and the results are shown in Table 1.
実施例５
ＤＤＲ叩解機を用いて、カナダ標準フリーネス（ＣＳＦ）５３０ｍＬに叩解した針葉樹未晒クラフトパルプ３．５％濃度のパルプ繊維スラリーに、カチオン系の湿潤紙力増強剤としてポリアミド・エピクロロヒドリンを成分とする薬品（商品名：ポリフィックス２５９、昭和高分子製）をパルプ重量に対して１．０％添加した以外は実施例４と同様にして果実袋原紙を作成し、品質を評価し結果を表１に示した。
Example 5
Using a DDR beating machine, polyamide epichlorohydrin as a cationic wet paper strength enhancer is added to a 3.5% -concentrated pulp fiber slurry of softwood unbleached kraft pulp beaten to 530 mL of Canadian Standard Freeness (CSF) A fruit bag base paper was prepared in the same manner as in Example 4 except that 1.0% of the chemical (trade name: Polyfix 259, manufactured by Showa Polymer Co., Ltd.) was added to the pulp weight, and the quality was evaluated. It is shown in Table 1.
比較例１
ＤＤＲ叩解機を用いて、カナダ標準フリーネス（ＣＳＦ）３５０ｍＬに叩解した針葉樹晒クラフトパルプ３．５％濃度のパルプ繊維スラリーを得た。このパルプ繊維スラリーに、湿潤紙力増強剤としてメラミンとホルムアルデヒドを成分にもつメラミン樹脂薬品（商品名：スミレーズレジン８％ＡＣ、田岡化学工業製）をパルプ重量に対して１．０％、酸性抄紙用サイズ剤（商品名：サイズパインＮ−７７１、荒川化学製）０．３％、硫酸バンド０．５％添加し紙料とした。
Comparative Example 1
Using a DDR beating machine, a pulp fiber slurry having a 3.5% concentration of softwood bleached kraft pulp beaten to 350 mL of Canadian Standard Freeness (CSF) was obtained. To this pulp fiber slurry, 1.0% melamine resin chemical (trade name: Sumire's Resin 8% AC, manufactured by Taoka Chemical Co., Ltd.) containing melamine and formaldehyde as wet paper strength enhancers, based on pulp weight, acidity A paper sizing agent (trade name: Size Pine N-771, manufactured by Arakawa Chemical Co., Ltd.) 0.3% and a sulfuric acid band 0.5% were added to obtain a paper material.
この紙料を用いて、長網抄紙機で坪量３６．５ｇ／ｍ２の紙を抄紙し、塗工設備にて、ワックス（商品名：ＨＡ−５４１、荒川化学製）を１．５ｇ／ｍ２塗工して、果実袋用の３８ｇ／ｍ２原紙を得た。実施例１と同様に評価し、結果を表１に示す。 Using this stock, paper with a basis weight of 36.5 g / m 2 is made with a long paper machine, and wax (trade name: HA-541, manufactured by Arakawa Chemical Co., Ltd.) is 1.5 g / The m 2 coating was performed to obtain 38 g / m 2 base paper for fruit bags. Evaluation was conducted in the same manner as in Example 1, and the results are shown in Table 1.
比較例２
湿潤紙力増強剤としてホルムアルデヒドを成分にもつメラミン樹脂薬品（商品名：スミレーズレジン８％ＡＣ、田岡化学工業製）をパルプ重量に対して１．２％、硫酸バンド０．８％添加した以外は比較例１同様にして紙料を得た。
Comparative Example 2
A melamine resin chemical containing formaldehyde as a wet paper strength enhancer (trade name: Sumirez resin 8% AC, manufactured by Taoka Chemical Co., Ltd.) except for 1.2% of the pulp weight and 0.8% sulfuric acid band Was obtained in the same manner as in Comparative Example 1.
この紙料を用いて、長網抄紙機で坪量４２．５ｇ／ｍ２の紙を抄紙し、塗工設備にて、ワックス（商品名：ＨＡ−５４１、荒川化学製）を１．５ｇ／ｍ２塗工して、果実袋用の４４ｇ／ｍ２原紙を得た。実施例１と同様に評価し、結果を表１に示す。 Using this stock, paper with a basis weight of 42.5 g / m 2 was made with a long paper machine, and wax (trade name: HA-541, manufactured by Arakawa Chemical Co., Ltd.) 1.5 g / and m 2 applied to give 44 g / m 2 base paper for fruit bags. Evaluation was conducted in the same manner as in Example 1, and the results are shown in Table 1.
比較例３
ＤＤＲ叩解機を用いて、カナダ標準フリーネス（ＣＳＦ）３５０ｍＬに叩解した針葉樹未晒クラフトパルプ３．５％濃度のパルプ繊維スラリーに、湿潤紙力増強剤としてホルムアルデヒドを成分にもつメラミン樹脂薬品（商品名：スミレーズレジン８％ＡＣ、田岡化学工業製）をパルプ重量に対して１．０％添加、硫酸バンド０．６％添加した以外は比較例２と同様にして坪量４４ｇ／ｍ２の果実袋原紙を作成し、実施例１と同様に評価し、結果を表１に示す。
Comparative Example 3
Melamine resin chemicals containing formaldehyde as a wet paper strength enhancer in a pulp fiber slurry of 3.5% conifer unbleached kraft pulp beaten to 350 mL of Canadian Standard Freeness (CSF) using a DDR beating machine (trade name) : Sumire's resin 8% AC, manufactured by Taoka Chemical Co., Ltd.) Fruit having a basis weight of 44 g / m 2 in the same manner as in Comparative Example 2 except that 1.0% was added to the pulp weight and 0.6% sulfuric acid band was added. A bag base paper was prepared and evaluated in the same manner as in Example 1, and the results are shown in Table 1.
比較例４
メラミン樹脂に変えて、湿潤紙力増強剤としてカチオン性ポリアミド樹脂を成分とする薬品（商品名：アラフィックス２５５、荒川化学製）をパルプ重量に対して０．９％、アニオン系の紙力増強剤としてポリアクリルアミドを成分とする薬品（商品名：ポリストロン１１７、荒川化学製）を０．９％、硫酸バンドを０．６％添加する以外は比較例１と同様にして坪量３８ｇ／ｍ２の果実袋原紙を作成し、実施例１と同様に評価し、結果を表１に示す。
Comparative Example 4
Instead of melamine resin, 0.9% of the weight of pulp (chemical name: Arafix 255, manufactured by Arakawa Chemical) containing cationic polyamide resin as a wet paper strength enhancer, anionic paper strength enhancement The basis weight is 38 g / m in the same manner as in Comparative Example 1 except that 0.9% of a chemical (trade name: Polystron 117, manufactured by Arakawa Chemical Co., Ltd.) and 0.6% of a sulfuric acid band are added. 2 fruit bag base paper was prepared and evaluated in the same manner as in Example 1, and the results are shown in Table 1.
比較例５
メラミン樹脂に変えて、カチオン系の湿潤紙力増強剤として、ポリアミドエポキシ樹脂を成分とする薬品（商品名：スパラミン３０、東邦化学工業製）をパルプ重量に対して１．０％添加、アニオン系の紙力増強剤として、ポリアクリルアミドを成分とする薬品（商品名：ポリストロン１１７、荒川化学製）を１．０％添加する以外は比較例３と同様にして果実袋原紙を作成し、品質を評価し結果を表１に示した。
Comparative Example 5
Instead of melamine resin, as a cationic wet paper strength enhancer, a chemical containing polyamide epoxy resin as a component (trade name: Sparamin 30, manufactured by Toho Chemical Co., Ltd.) is added 1.0% to the pulp weight, anionic A fruit bag base paper was prepared in the same manner as in Comparative Example 3 except that 1.0% of a chemical containing polyacrylamide as a component (trade name: Polystron 117, manufactured by Arakawa Chemical Co., Ltd.) was added as a paper strength enhancer. The results are shown in Table 1.
比較例６
湿潤紙力増強剤としてカチオン性ポリアミド樹脂を成分とする薬品（商品名：アラフィックス２５５、荒川化学製）をパルプ重量に対して１．２％添加、アニオン系の紙力増強剤としてポリアクリルアミドを成分とする薬品（商品名：ポリストロン１１７、荒川化学製）を０．９％添加する以外は実施例１と同様にして果実袋原紙を作成し、品質を評価し結果を表１に示した。
Comparative Example 6
A chemical containing cationic polyamide resin as a wet paper strength enhancer (trade name: Arafix 255, manufactured by Arakawa Chemical Co., Ltd.) is added 1.2% of the pulp weight, and polyacrylamide is added as an anionic paper strength enhancer. A fruit bag base paper was prepared in the same manner as in Example 1 except that 0.9% of chemicals as ingredients (trade name: Polystron 117, manufactured by Arakawa Chemical Co., Ltd.) was added, the quality was evaluated, and the results are shown in Table 1. .
表１から明らかなように、本発明により果実袋原紙は、
（１）従来のメラミン樹脂の紙力剤を用いた処方（比較例１〜３）と遜色のない湿潤強度を有する果実袋原紙が得られた。
（２）硫酸バンドを使用したノンホルマリン処方（比較例４〜５）よりも、実施例の湿潤強度は高い。
（３）カチオン性とアニオン性の比率を適性範囲で使用することにより、バランスの悪い比較例６よりも、コストバランスと湿潤強度を高いレベルで発現させた。
As is clear from Table 1, according to the present invention, the fruit bag base paper is
(1) A prescription (comparative examples 1 to 3) using a paper strength agent of a conventional melamine resin and a fruit bag base paper having a wet strength comparable to that of the conventional melamine resin.
(2) The wet strength of the examples is higher than that of non-formalin formulations (Comparative Examples 4 to 5) using a sulfuric acid band.
(3) By using the ratio between the cationic property and the anionic property within the appropriate range, the cost balance and the wet strength were expressed at a higher level than the comparative example 6 having a poor balance.
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| JP6548303B2 (en) * | 2015-12-16 | 2019-07-24 | 北越コーポレーション株式会社 | Inkjet recording paper |
| CN109575278A (en) * | 2018-11-22 | 2019-04-05 | 山东同创精细化工股份有限公司 | A kind of strong PAE of high humidity and preparation method thereof |
| CN112376325B (en) * | 2020-09-24 | 2022-07-29 | 郑州八方包装制品有限公司 | High-strength fruit bag paper and preparation method thereof |
| US20230022793A1 (en) * | 2021-07-21 | 2023-01-26 | Steve Kohn | Hemp paper bags |
| CN115538214A (en) * | 2022-09-15 | 2022-12-30 | 浙江鑫丰特种纸业股份有限公司 | Production process of outer bag paper of three-red honey pomelo fruit cultivation bag |
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