JP2006016730A - Paper coaster material - Google Patents
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- JP2006016730A JP2006016730A JP2004196361A JP2004196361A JP2006016730A JP 2006016730 A JP2006016730 A JP 2006016730A JP 2004196361 A JP2004196361 A JP 2004196361A JP 2004196361 A JP2004196361 A JP 2004196361A JP 2006016730 A JP2006016730 A JP 2006016730A
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- 239000000463 material Substances 0.000 title claims abstract description 38
- 239000010410 layer Substances 0.000 claims abstract description 44
- 239000002344 surface layer Substances 0.000 claims abstract description 29
- 239000000428 dust Substances 0.000 claims abstract description 16
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 14
- 238000010998 test method Methods 0.000 claims abstract description 8
- 238000005299 abrasion Methods 0.000 claims abstract description 7
- 239000000123 paper Substances 0.000 claims description 52
- 239000011436 cob Substances 0.000 claims description 15
- 235000007164 Oryza sativa Nutrition 0.000 claims description 10
- 235000009566 rice Nutrition 0.000 claims description 10
- 229920003169 water-soluble polymer Polymers 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000011087 paperboard Substances 0.000 claims description 7
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000007645 offset printing Methods 0.000 abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 238000010521 absorption reaction Methods 0.000 abstract description 13
- 239000002994 raw material Substances 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 241000209094 Oryza Species 0.000 description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 239000002655 kraft paper Substances 0.000 description 6
- 238000007639 printing Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011121 hardwood Substances 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 239000013055 pulp slurry Substances 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 241000218645 Cedrus Species 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- 235000014466 Douglas bleu Nutrition 0.000 description 1
- 240000000797 Hibiscus cannabinus Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 235000008577 Pinus radiata Nutrition 0.000 description 1
- 241000218621 Pinus radiata Species 0.000 description 1
- 240000001416 Pseudotsuga menziesii Species 0.000 description 1
- 235000005386 Pseudotsuga menziesii var menziesii Nutrition 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000007644 letterpress printing Methods 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000013054 paper strength agent Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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Abstract
Description
本願発明は、紙コースター素材に関し、さらに詳しくは表面強度が改善され、オフセット印刷時の紙粉・ピッキングが発生しない紙コースター素材に関するものである。 The present invention relates to a paper coaster material, and more particularly to a paper coaster material that has improved surface strength and does not generate paper dust and picking during offset printing.
一般に、多層抄き合わせ板紙からなる紙コースター素材は、抄紙機で原紙抄造後、貼合加工、印刷、抜き加工を行い、飲食店等に納入されることとなっている。 In general, a paper coaster material made of multi-layered laminated paperboard is subjected to pasting, printing, and punching after being made with a paper machine, and then delivered to a restaurant or the like.
従来は、紙コースター素材への印刷は、単色、活版印刷がほとんどであったが、飲食店業界の多様化により、紙コースターにもオリジナリティが求められるようになってきており、カラフルな多色、カラーオフセット印刷化が進んでいる。 Traditionally, printing on paper coaster materials was mostly monochromatic and letterpress printing, but with the diversification of the restaurant industry, paper coasters are also demanding originality, with colorful, multicolored, Color offset printing is progressing.
紙コースターには、グラスを置いた時のクッション性、グラス表面の露（即ち、水滴）の吸水性が求められるため、原料パルプスラリーのフリーネスを４５０〜６５０ｍｌＣＳＦ（カナダ標準ろ水度）に調整し、素材の密度が０．５５〜０．７５ｇ／ｃｍ3となるようにしている。素材の密度が０．７５ｇ／ｃｍ3を超えてしまうと紙が硬くなり、クッション性、吸水性が低下し、また加工工程において素材表面にシワが発生するため、紙コースター素材として適さないものとなる。 Since paper coasters are required to have cushioning properties when the glass is placed and water absorption of dew on the glass surface (ie, water droplets), the freeness of the raw pulp slurry is adjusted to 450 to 650 ml CSF (Canadian Standard Freeness). The material density is set to 0.55 to 0.75 g / cm 3 . If the density of the material exceeds 0.75 g / cm 3 , the paper becomes hard, cushioning properties and water absorption are reduced, and wrinkles are generated on the surface of the material in the processing process, so it is not suitable as a paper coaster material. Become.
なお、紙コースター素材についての公知特許文献を調査したが、そのような特許文献を見いだすことができなかった。 In addition, although the well-known patent document about a paper coaster material was investigated, such a patent document was not able to be found.
ところが、原料パルプスラリーのフリーネスを４５０〜６５０ｍｌＣＳＦ（カナダ標準ろ水度）に調整し、且つ密度が０．５５〜０．７５ｇ／ｃｍ3となるように調整すると、パルプ繊維の絡みが少なくなり、表面強度が低下してしまう。表面強度が低下すると、オフセット印刷時に紙粉が発生し、ベタ印刷時の白抜け、ピッキングの原因となる。 However, adjusting the freeness of the raw pulp slurry to 450 to 650 ml CSF (Canadian standard freeness) and adjusting the density to 0.55 to 0.75 g / cm 3 reduces the entanglement of the pulp fibers, The surface strength is reduced. When the surface strength is reduced, paper dust is generated during offset printing, which causes white spots and picking during solid printing.
上記のような事情から、クッション性、吸水性を保ったままで、表面強度が強く、オフセット印刷適性を有する紙コースター素材の開発が希求されている。 In view of the above circumstances, there is a demand for the development of a paper coaster material having high surface strength and offset printing suitability while maintaining cushioning properties and water absorption.
本発明者らは、上記した事情に鑑みて鋭意研究を重ねた結果、少なくとも表面層、裏面層と両層間に位置する中間層との３層以上の層からなる多層抄き合わせ板紙であって、前記各層がそれぞれ木材パルプを主原料としたものにおいて、密度および実米坪を所定範囲とし、テーパ摩耗試験法（ＪＩＳ Ｌ１０９６ ８．１７．３準拠）による紙粉発生量を所定の範囲とすることにより、所望の紙コースター素材を得ることができることを見出し、本発明を完成するに至った。 As a result of intensive studies in view of the above-mentioned circumstances, the present inventors are a multilayer laminated paperboard composed of at least three layers of a surface layer, a back surface layer, and an intermediate layer located between both layers. In each of the above layers, each of which uses wood pulp as a main raw material, the density and real rice tsubo are in a predetermined range, and the amount of paper dust generated by the taper abrasion test method (conforming to JIS L1096 8.17.3) is in a predetermined range. Thus, it was found that a desired paper coaster material can be obtained, and the present invention has been completed.
本願発明は、上記の点に鑑みてなされたもので、クッション性、吸水性を保ったままで、表面強度が強く、オフセット印刷適性を有する紙コースター素材が得られるようにすることを目的としている。 The present invention has been made in view of the above points, and an object thereof is to obtain a paper coaster material having high surface strength and offset printing suitability while maintaining cushioning properties and water absorption.
本願発明の紙コースター素材は、少なくとも表面層、裏面層と両層間に位置する中間層との３層以上の層からなる多層抄き合わせ板紙であって、前記各層はそれぞれ木材パルプを主原料としており、密度０．５５〜０．７５ｇ／ｃｍ3、実米坪２５０〜６５０ｇ／ｍ2で、テーパ摩耗試験法（ＪＩＳ Ｌ１０９６ ８．１７．３準拠）による紙粉発生量が５０〜３００ｍｇの範囲であることを特徴としている。 The paper coaster material of the present invention is a multi-layered laminated paperboard composed of at least three layers of a front surface layer, a back surface layer, and an intermediate layer located between both layers, and each of the layers is mainly made of wood pulp. A density of 0.55 to 0.75 g / cm 3 , a real rice floor 250 to 650 g / m 2 , and a paper dust generation amount according to the taper abrasion test method (according to JIS L1096 8.17.3) is in the range of 50 to 300 mg. It is characterized by being.
上記のように構成したことにより、コースターとして要求されるクッション性、吸水性が確保されるとともに、表面強度が向上し、オフセット印刷時に紙剥けなどの紙層破壊が発生しにくい（オフセット印刷適性に優れた）紙コースター素材が得られる。なお、密度が０．５５ｇ／ｃｍ3未満になると、紙が軟らかくなりすぎ、グラスの安定性が悪くなる。０．７５ｇ／ｃｍ3を超えると、紙が硬くなりすぎて、クッション性が低下する。また、実米坪が２５０ｇ／ｍ2未満になると、クッション性を得るための紙厚が得られなくなる。６５０ｇ／ｍ2を超えると、コースターとしては厚過ぎ、経済的でない。また、紙粉発生量が５０ｍｇ未満となると、表面強度が強くなりすぎ、吸水性が低下し、３００ｍｇを超えると、オフセット印刷時の紙粉の発生量が多くなる。 By configuring as described above, cushioning and water absorption required as a coaster are secured, surface strength is improved, and paper layer breakage such as paper peeling is less likely to occur during offset printing (for offset printing suitability). An excellent paper coaster material is obtained. When the density is less than 0.55 g / cm 3 , the paper becomes too soft and the stability of the glass is deteriorated. When it exceeds 0.75 g / cm 3 , the paper becomes too hard and the cushioning property is lowered. On the other hand, when the real rice floor is less than 250 g / m 2 , the paper thickness for obtaining cushioning properties cannot be obtained. If it exceeds 650 g / m 2 , it is too thick as a coaster and is not economical. When the amount of paper dust generated is less than 50 mg, the surface strength becomes too strong and the water absorption decreases, and when it exceeds 300 mg, the amount of paper dust generated during offset printing increases.
本願発明の紙コースター素材において、表面層および／または裏面層に水溶性高分子を塗布することもでき、そのようにした場合、表面強度がより一層向上することとなる。 In the paper coaster material of the present invention, a water-soluble polymer can be applied to the front surface layer and / or the back surface layer. In such a case, the surface strength is further improved.
また、本願発明の紙コースター素材において、コッブ法による３０秒コッブ度（ＪＩＳ Ｐ ８１４０準拠）が５０〜９００ｇ／ｍ2となるように調整することもでき、そのようにした場合、水溶性高分子を素材表面に歩留まらせることができ、吸水性を確保することができる。なお、３０秒コッブ値（ＪＩＳ Ｐ ８１４０準拠）が５０ｇ／ｍ2未満になると、素材の吸水性が低下するため、グラスとコースターとがくっついてしまうという問題が生ずる。９００ｇ／ｍ2を超えると、オフセット印刷時の湿し水によって素材自体に水分が吸収されオフセット印刷が不可能となってしまう。 In the paper coaster material of the present invention, the Cobb method can be adjusted so that the degree of Cobb for 30 seconds (according to JIS P 8140) is 50 to 900 g / m 2. Can be made to yield on the surface of the material, and water absorption can be secured. If the 30-second Cobb value (JIS P 8140 compliant) is less than 50 g / m 2 , the water absorbability of the material is reduced, causing a problem that the glass and the coaster stick together. If it exceeds 900 g / m 2 , moisture will be absorbed by the material itself by dampening water during offset printing, making offset printing impossible.
本願発明の紙コースター素材によれば、少なくとも表面層、裏面層と両層間に位置する中間層との３層以上の層からなる多層抄き合わせ板紙であって、前記各層はそれぞれ木材パルプを主原料としており、密度０．５５〜０．７５ｇ／ｃｍ3、実米坪２５０〜６５０ｇ／ｍ2で、テーパ摩耗試験法による紙粉発生量（ＪＩＳ Ｌ１０９６ ８．１７．３準拠）が５０〜３００ｍｇの範囲となるように構成したので、コースターとして要求されるクッション性、吸水性が確保されるとともに、表面強度が向上し、オフセット印刷時に紙剥けなどの紙層破壊が発生しにくくなる（オフセット印刷適性に優れたものとなる）という効果がある。 According to the paper coaster material of the present invention, it is a multi-layered laminated paperboard composed of at least three layers of a front surface layer, a back surface layer, and an intermediate layer located between both layers, each of which is mainly made of wood pulp. The raw material has a density of 0.55 to 0.75 g / cm 3 , a real rice basis weight of 250 to 650 g / m 2 , and a paper dust generation amount (according to JIS L1096 8.17.3) according to the taper abrasion test method is 50 to 300 mg. Because the cushioning and water absorption required for the coaster are secured, the surface strength is improved, and paper layer breakage such as paper peeling is less likely to occur during offset printing (offset printing). It will be excellent in suitability).
本願発明の紙コースター素材において、表面層および／または裏面層に水溶性高分子を塗布することもでき、そのようにした場合、表面強度がより一層向上することとなる。 In the paper coaster material of the present invention, a water-soluble polymer can be applied to the front surface layer and / or the back surface layer. In such a case, the surface strength is further improved.
また、本願発明の紙コースター素材において、コッブ法による３０秒コッブ値（ＪＩＳ Ｐ ８１４０準拠）が５０〜９００ｇ／ｍ2となるように調整することもでき、そのようにした場合、水溶性高分子を素材表面に歩留まらせることができ、吸水性を確保することができる。 In the paper coaster material of the present invention, the Cobb method can be adjusted so that the 30-second Cobb value (conforming to JIS P 8140) is 50 to 900 g / m 2, and in such a case, the water-soluble polymer Can be made to yield on the surface of the material, and water absorption can be secured.
以下、本願発明の好適な実施の形態について説明する。 Hereinafter, preferred embodiments of the present invention will be described.
この紙コースター素材は、少なくとも表面層、裏面層と両層間に位置する中間層との３層以上の層からなる多層抄き合わせ板紙であって、前記各層はそれぞれ木材パルプを主原料としており、密度０．５５〜０．７５ｇ／ｃｍ3、実米坪２５０〜６５０ｇ／ｍ2で、テーパ摩耗試験法による紙粉発生量（ＪＩＳ Ｌ１０９６ ８．１７．３準拠）が５０〜３００ｍｇの範囲であることを特徴としている。 This paper coaster material is a multi-layered laminated paperboard composed of at least three layers of a front surface layer, a back surface layer and an intermediate layer located between both layers, and each layer is mainly made of wood pulp, The density of paper is 0.55 to 0.75 g / cm 3 , the real rice floor is 250 to 650 g / m 2 , and the amount of paper dust generated by the taper abrasion test method (according to JIS L1096 8.17.3) is in the range of 50 to 300 mg. It is characterized by that.
本願発明において、表面層、裏面層および両層間に位置する中間層の各層の主原料である木材パルプとしては、特に制限されないが、例えば、ダグラスファー、ラジアータパイン、杉、松などの針葉樹；ユーカリ、オークなどの広葉樹を主原料としたクラフトパルプ（ＫＰ）、セミケミカルパルプ（ＳＣＰ）、砕木パルプ（ＧＰ）、ケミグランドパルプ（ＣＧＰ）、リファイナーグランドパルプ（ＲＧＰ）、ディインキングパルプ（ＤＩＰ）、ウエストパルプ（ＷＰ）などが挙げられ、使用に際しては単独もしくは２種以上混合して用いることができる。なお、本願発明の効果を阻害しない範囲で、ケナフ、バガス等の非木材パルプを混合することもできる。 In the present invention, the wood pulp that is the main raw material for each of the surface layer, the back surface layer, and the intermediate layer located between both layers is not particularly limited. For example, conifers such as Douglas fir, radiata pine, cedar and pine; Kraft pulp (KP), Semi-chemical pulp (SCP), Crushed wood pulp (GP), Chemi-ground pulp (CGP), Refiner ground pulp (RGP), Diinking pulp (DIP) , Waist pulp (WP) and the like, and can be used alone or in combination of two or more. In addition, non-wood pulp, such as kenaf and bagasse, can be mixed within a range that does not impair the effects of the present invention.
表面層、裏面層および中間層は、それぞれ同じ木材パルプを用いて形成してもよく、また異なる木材パルプを用いて形成してもよい。具体的には、表面層および裏面層は、針葉樹晒クラフトパルプ（ＮＢＫＰ）および広葉樹晒クラフトパルプ（ＬＢＫＰ）を用いて形成するのが望ましく、中間層は、針葉樹、広葉樹を原料としたクラフトパルプ（ＫＰ）もしくはディインキングパルプ（ＤＩＰ）を用いて形成するのが望ましい。 The surface layer, the back layer and the intermediate layer may be formed using the same wood pulp, or may be formed using different wood pulps. Specifically, the surface layer and the back layer are preferably formed using softwood bleached kraft pulp (NBKP) and hardwood bleached kraft pulp (LBKP), and the intermediate layer is a kraft pulp made from softwood and hardwood (raw wood). It is desirable to use KP) or diinking pulp (DIP).
また、各層には、本願発明の所望の効果を損なわない範囲で、種々の他の成分を添加することができる。具体的には、表面層および裏面層には、後述する塗工液を塗工して該塗工液に含まれる種々成分を含ませることができる他、表面層、裏面層、中間層いずれの層にも、紙力剤、歩留まり向上剤、着色剤、消泡剤、増粘剤を用いることができる。このように他の成分を用いる場合には、前記木材パルプの使用量は、各層の全体量中９０重量部以上とするのが、本願発明の所望の効果を得るために好ましく、９３〜９７重量部とするのがさらに好ましい。 Moreover, various other components can be added to each layer in the range which does not impair the desired effect of this invention. Specifically, the surface layer and the back surface layer can be coated with a coating liquid described later to include various components contained in the coating liquid, and any of the surface layer, the back surface layer, and the intermediate layer can be included. A paper strength agent, a yield improver, a colorant, an antifoaming agent, and a thickener can also be used for the layer. Thus, when other components are used, the amount of the wood pulp used is preferably 90 parts by weight or more in the total amount of each layer in order to obtain the desired effect of the present invention, and is 93 to 97 weights. More preferably, it is part.
本願発明の紙コースター素材において、前記表面層および／または裏面層に水溶性高分子を塗布することもでき、そのようにした場合、表面強度がより一層向上することとなる。 In the paper coaster material of the present invention, a water-soluble polymer can be applied to the front surface layer and / or the back surface layer. In such a case, the surface strength is further improved.
前記水溶性高分子としては、ポリビニールアルコール（ＰＶＡ）、澱粉、ヒドロキシエチルセルロース（ＨＥＣ）、ポリアクリルアミド（ＰＡＭ）等が挙げられる。 Examples of the water-soluble polymer include polyvinyl alcohol (PVA), starch, hydroxyethyl cellulose (HEC), polyacrylamide (PAM), and the like.
また、水溶性高分子の平均分子量は、用いる水溶性高分子の種類によって差があるが、５万以上とするのが好ましく、また、ポリビニールアルコール（ＰＶＡ）を用いる場合、その重合度は、１０００〜２０００とされ、ケン化度は、好ましくは９７％以上、より好ましくは９８％以上の完全ケン化タイプとされる。ケン化度の高いＰＶＡは、冷水では膨潤するのみでほとんど溶解せず、高温水に溶解するため、塗工液の調整が煩雑だが、皮膜強度が高く、吸湿性も低いため、紙粉発生の抑制に効果を発現する。 The average molecular weight of the water-soluble polymer varies depending on the type of water-soluble polymer to be used, but is preferably 50,000 or more. When polyvinyl alcohol (PVA) is used, the degree of polymerization is The saponification degree is preferably 97% or more, more preferably 98% or more. PVA with a high saponification degree swells only in cold water and hardly dissolves, but dissolves in high-temperature water. Therefore, the adjustment of the coating solution is complicated, but the film strength is high and the hygroscopicity is low. It is effective for suppression.
また、本願発明の紙コースター素材において、コッブ法による３０秒コッブ値（ＪＩＳ Ｐ ８１４０準拠）が５０〜９００ｇ／ｍ2となるように調整することもでき、そのようにした場合、水溶性高分子を素材表面に歩留まらせることができ、吸水性を確保することができる。なお、コッブ法による３０秒コッブ値が５０ｇ／ｍ2未満になると、コースターの本質的役割である吸水性を示さず、グラスとコースターがくっついてしまい非常に使用しにくくなる。９００ｇ／ｍ2を超えると、オフセット印刷時の湿し水によって素材自体に水分が吸収されオフセット印刷が不可能となってしまう。 In the paper coaster material of the present invention, the Cobb method can be adjusted so that the 30-second Cobb value (conforming to JIS P 8140) is 50 to 900 g / m 2, and in such a case, the water-soluble polymer Can be made to yield on the surface of the material, and water absorption can be secured. In addition, when the 30 second Cobb value by the Cobb method is less than 50 g / m 2 , the water absorption that is an essential role of the coaster is not exhibited, and the glass and the coaster are adhered to each other, which makes it extremely difficult to use. If it exceeds 900 g / m 2 , moisture will be absorbed by the material itself by dampening water during offset printing, making offset printing impossible.
本願発明の紙コースター素材は、公知の多層抄き抄紙機を用いて製造することができる。 The paper coaster material of the present invention can be manufactured using a known multilayer paper machine.
次に、本願発明を、下記の実施例１〜７および比較例１〜８に基づいて詳述するが、本願発明は、これらの実施例によって限定されるものではない。なお、以下、ｋｇ／ｔとは、パルプ絶乾重量ｔ当たりの有姿での添加量を表す。また、各実施例、各比較例において、米坪の調整は、抄き合わせる層数（４〜７層）と１層当たりの米坪とにより行い、密度の調整は、カレンダー加圧条件と発泡剤の添加量とにより行ったものである。 Next, although this invention is explained in full detail based on the following Examples 1-7 and Comparative Examples 1-8, this invention is not limited by these Examples. In the following, kg / t represents the added amount per solid dry weight t. Moreover, in each Example and each comparative example, the adjustment of the rice tsubo is performed by the number of layers to be made (4 to 7 layers) and the rice tsubo per layer, and the density is adjusted by calendering pressure conditions and foaming. Depending on the added amount of the agent.
実施例１
針葉樹晒クラフトパルプ４０重量％（６００ｍｌＣＳＦ）、広葉樹晒クラフトパルプ６０重量％（５００ｍｌＣＳＦ）を原料パルプとし、硫酸バンド１０ｋｇ／ｔ、サイズ剤（ハリマ化成株式会社製 ハーマイド Ｆ１５）２０ｋｇ／ｔ、発泡剤（松本油脂製薬株式会社製 マツモトマイクロスフェアー Ｆ−３０Ｄ）２５ｋｇ／ｔを使用し、米坪２５０ｇ／ｍ2、密度０．５５ｇ／ｃｍ3に調整し、表面にＰＶＡ（日本合成化学株式会社製 ゴーセノールＮ３００）をカレンダー塗工（塗工量０．５ｇ／ｍ2）し、コースター素材を得た。このコースター素材の紙粉発生量、オフセット印刷適性、コースターとしての使用適性を総合的に評価した。
Example 1
Softwood bleached kraft pulp 40% by weight (600ml CSF), hardwood bleached kraft pulp 60% by weight (500ml CSF) as the raw material pulp, sulfuric acid band 10kg / t, sizing agent (Harmide F15, Harima Kasei Co., Ltd.) 20kg / t, foaming agent ( Matsumoto Microsphere F-30D (Matsumoto Yushi Seiyaku Co., Ltd.) 25kg / t is used and adjusted to 250g / m 2 in rice tsubo and 0.55g / cm 3 in density. N300) was calender coated (coating amount 0.5 g / m 2 ) to obtain a coaster material. The amount of paper dust generated, the suitability for offset printing, and the suitability for use as a coaster were comprehensively evaluated.
実施例２
米坪６５０ｇ／ｍ2とした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Example 2
Papermaking was performed in the same manner as in Example 1 except that the weight was 650 g / m 2, and the same evaluation as in Example 1 was performed.
実施例３
密度０．７５ｇ／ｃｍ3とした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Example 3
Papermaking was performed in the same manner as in Example 1 except that the density was 0.75 g / cm 3, and the same evaluation as in Example 1 was performed.
実施例４
米坪６５０ｇ／ｍ2、密度０．７５ｇ／ｃｍ3とした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Example 4
Papermaking was performed in the same manner as in Example 1 except that the weight was 650 g / m 2 and the density was 0.75 g / cm 3, and the same evaluation as in Example 1 was performed.
実施例５
米坪４００ｇ／ｍ2、密度０．６５ｇ／ｃｍ3とした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Example 5
Papermaking was performed in the same manner as in Example 1 except that the weight was 400 g / m 2 and the density was 0.65 g / cm 3, and the same evaluation as in Example 1 was performed.
実施例６
米坪６５０ｇ／ｍ2とし、サイズ剤を添加しないこと以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Example 6
Papermaking was performed in the same manner as in Example 1 except that the weight was 650 g / m 2 and the sizing agent was not added, and the same evaluation as in Example 1 was performed.
実施例７
米坪４００ｇ／ｍ2、密度０．５５ｇ／ｃｍ3、サイズ剤１０ｋｇ／ｔとした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Example 7
Papermaking was performed in the same manner as in Example 1 except that the weight was 400 g / m 2 , the density was 0.55 g / cm 3 , and the size was 10 kg / t, and the same evaluation as in Example 1 was performed.
比較例１
米坪１５０ｇ／ｍ2とした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Comparative Example 1
Papermaking was performed in the same manner as in Example 1 except that the weight was 150 g / m 2, and the same evaluation as in Example 1 was performed.
比較例２
米坪７００ｇ／ｍ2とした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Comparative Example 2
Papermaking was performed in the same manner as in Example 1 except that the weight was 700 g / m 2, and the same evaluation as in Example 1 was performed.
比較例３
密度０．８０ｇ／ｃｍ3とした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Comparative Example 3
Except that the density was 0.80 g / cm 3 , paper was made in the same manner as in Example 1, and the same evaluation as in Example 1 was performed.
比較例４
ＰＶＡ塗工なしとした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Comparative Example 4
Papermaking was performed in the same manner as in Example 1 except that no PVA coating was applied, and the same evaluation as in Example 1 was performed.
比較例５
米坪４００ｇ／ｍ2、密度０．６５ｇ／ｃｍ3とし、ＰＶＡ塗工なしとした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Comparative Example 5
Papermaking was performed in the same manner as in Example 1 except that the weight was 400 g / m 2 and the density was 0.65 g / cm 3, and no PVA coating was applied.
比較例６
密度０．７５ｇ／ｃｍ3とし、ＰＶＡ塗工なしとした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Comparative Example 6
Papermaking was performed in the same manner as in Example 1 except that the density was 0.75 g / cm 3 and no PVA coating was applied, and the same evaluation as in Example 1 was performed.
比較例７
米坪４００ｇ／ｍ2、密度０．４５ｇ／ｃｍ3とした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Comparative Example 7
Papermaking was performed in the same manner as in Example 1 except that the weight was 400 g / m 2 and the density was 0.45 g / cm 3, and the same evaluation as in Example 1 was performed.
比較例８
密度０．７５ｇ／ｃｍ3、サイズ剤３０ｋｇ／ｔとした以外は、実施例１と同様に抄造し、実施例１と同様の評価を行った。
Comparative Example 8
Except for the density of 0.75 g / cm 3 and the sizing agent of 30 kg / t, papermaking was performed in the same manner as in Example 1, and the same evaluation as in Example 1 was performed.
上記実施例１〜７および比較例１〜８にて製造した紙コースター素材について下記の項目を測定して評価した。結果は表１に示した。
コッブサイズ度：コッブ法による３０秒コッブ度（ＪＩＳ Ｐ ８１４０準拠）
紙粉発生量：テーパ摩耗試験法による紙粉発生量（ＪＩＳ Ｌ１０９６ ８．１７．３準拠）
オフセット印刷適性：オフセット枚葉印刷機で４色印刷を行い、１０００枚印刷後、ブランケットに付着した紙粉の発生量を評価した。
コースターとしての使用適性：オフセット印刷機で合格したサンプルについて、氷水を入れたグラスをコースターに置き、グラスの安定感、１０分経過後のグラスとコースターとの付着について評価した。
The following items were measured and evaluated for the paper coaster materials produced in Examples 1-7 and Comparative Examples 1-8. The results are shown in Table 1.
Cobb sizing degree: 30-second cobbing degree according to Cobb method (conforms to JIS P 8140)
Amount of paper dust generated: Amount of paper dust generated by the taper wear test method (conforming to JIS L1096 8.17.3)
Offset printing suitability: Four-color printing was performed with an offset sheet-fed printing press, and after 1000 sheets were printed, the amount of paper dust adhered to the blanket was evaluated.
Suitability for use as a coaster: For a sample that passed the offset printing machine, a glass with ice water was placed on the coaster, and the stability of the glass and the adhesion between the glass and the coaster after 10 minutes were evaluated.
表１に示す結果によれば、少なくとも表面層、裏面層と両層間に位置する中間層との３層以上の層からなる多層抄き合わせ板紙であって、前記各層はそれぞれ木材パルプを主原料としており、密度０．５５〜０．７５ｇ／ｃｍ3、実米坪２５０〜６５０ｇ／ｍ2で、テーパ摩耗試験法による紙粉発生量（ＪＩＳ Ｌ１０９６ ８．１７．３準拠）が５０〜３００ｍｇでコッブ法による３０秒コッブ度５０〜９００ｇ／ｍ2（ＪＩＳ Ｐ ８１４０準拠）の範囲である実施例１〜７が、比較例１〜８に比して、紙粉発生量及びオフセット印刷時の印刷適性、コースターとしての使用適性において優れていることが分かる。 According to the results shown in Table 1, it is a multi-layered laminated paperboard composed of at least three layers of a front surface layer, a back surface layer, and an intermediate layer located between both layers, and each layer is made of wood pulp as a main raw material. It has a density of 0.55 to 0.75 g / cm 3 , a real rice floor of 250 to 650 g / m 2 , and the amount of paper dust generated by the taper abrasion test method (according to JIS L1096 8.17.3) is 50 to 300 mg. Examples 1-7 which are 30 second Cobb degrees by the Cobb method of 50-900 g / m < 2 > (JIS P 8140 conformity) range compared with Comparative Examples 1-8, the amount of paper dust generation and printing at the time of offset printing It turns out that it is excellent in aptitude and the use aptitude as a coaster.
Claims (3)
Paper coaster material according to claim 2, wherein the 30-second Cobb value by the Cobb's method (JIS P 8140 compliant) is characterized in that it is adjusted to 50~900g / m 2.
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| JP2008163507A (en) * | 2006-12-28 | 2008-07-17 | Daio Paper Corp | Mat mount and mat board |
| JP2008297666A (en) * | 2007-05-31 | 2008-12-11 | Daio Paper Corp | Impregnating base paper |
| JP2013181254A (en) * | 2012-02-29 | 2013-09-12 | Daio Paper Corp | Method for producing cushioning material for hot press molding and cushioning material for hot press molding |
| JP2014231662A (en) * | 2013-05-30 | 2014-12-11 | 王子ホールディングス株式会社 | Coaster base paper |
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| JP2004149947A (en) * | 2002-10-30 | 2004-05-27 | Daio Paper Corp | Water-absorbing paper base paper and water-absorbing paper |
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| JPH06306793A (en) * | 1993-04-22 | 1994-11-01 | Shinfuji Seishi Kk | Production of readily water absorbing paper |
| JPH0747026A (en) * | 1993-08-06 | 1995-02-21 | Kureha Plast Kk | Pressed flower shaping and its manufacture |
| JPH09230532A (en) * | 1996-02-28 | 1997-09-05 | Mitsubishi Paper Mills Ltd | Photographic recording material and its recording method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008163507A (en) * | 2006-12-28 | 2008-07-17 | Daio Paper Corp | Mat mount and mat board |
| JP2008297666A (en) * | 2007-05-31 | 2008-12-11 | Daio Paper Corp | Impregnating base paper |
| JP2013181254A (en) * | 2012-02-29 | 2013-09-12 | Daio Paper Corp | Method for producing cushioning material for hot press molding and cushioning material for hot press molding |
| JP2014231662A (en) * | 2013-05-30 | 2014-12-11 | 王子ホールディングス株式会社 | Coaster base paper |
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