JP2006176921A - White liner - Google Patents
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- JP2006176921A JP2006176921A JP2004371123A JP2004371123A JP2006176921A JP 2006176921 A JP2006176921 A JP 2006176921A JP 2004371123 A JP2004371123 A JP 2004371123A JP 2004371123 A JP2004371123 A JP 2004371123A JP 2006176921 A JP2006176921 A JP 2006176921A
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- 239000010410 layer Substances 0.000 claims abstract description 116
- 239000002344 surface layer Substances 0.000 claims abstract description 58
- 229920002472 Starch Polymers 0.000 claims abstract description 26
- 235000019698 starch Nutrition 0.000 claims abstract description 25
- 239000008107 starch Substances 0.000 claims abstract description 24
- 239000000123 paper Substances 0.000 claims description 54
- 239000003623 enhancer Substances 0.000 claims description 20
- 239000011111 cardboard Substances 0.000 claims description 8
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract 1
- 229920001131 Pulp (paper) Polymers 0.000 description 20
- 239000002537 cosmetic Substances 0.000 description 19
- 229920002401 polyacrylamide Polymers 0.000 description 17
- 239000002994 raw material Substances 0.000 description 15
- 239000010893 paper waste Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 239000011087 paperboard Substances 0.000 description 10
- 230000000007 visual effect Effects 0.000 description 9
- 238000005336 cracking Methods 0.000 description 8
- 239000002655 kraft paper Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002518 antifoaming agent Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920001592 potato starch Polymers 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- 229920002261 Corn starch Polymers 0.000 description 1
- 206010015535 Euphoric mood Diseases 0.000 description 1
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- 240000003183 Manihot esculenta Species 0.000 description 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- DZHMRSPXDUUJER-UHFFFAOYSA-N [amino(hydroxy)methylidene]azanium;dihydrogen phosphate Chemical compound NC(N)=O.OP(O)(O)=O DZHMRSPXDUUJER-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 229940064004 antiseptic throat preparations Drugs 0.000 description 1
- -1 antiseptics Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229920006319 cationized starch Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229940100486 rice starch Drugs 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 229940100445 wheat starch Drugs 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
Description
本発明は、古紙パルプが５０％以上配合された原料パルプを各層に用いて抄紙した白ライナーに関し、さらに詳細には、良好な美粧性及び加工適性を有し、罫線割れの発生を防止した白ライナーに関する。 The present invention relates to a white liner made by using raw pulp containing 50% or more of waste paper pulp for each layer, and more specifically, a white liner having good cosmetic properties and processability and preventing occurrence of ruled line cracks. Regarding the liner.
従来より、包装箱等の箱は、白板紙によるもののほか、段ボールシートにより製函される段ボール箱がある。段ボールは、コルゲート処理が施された中芯と中芯を挟持する２枚のライナー（外装用ライナー及び内装用ライナー）とで構成されている。また、ライナーは、漂白されたパルプを主原料とする原料が表層（ライナーの表面となる最外層）に使用されている白ライナーと、漂白されていないパルプ（色調は茶系色）を主原料とする原料が表層に使用されている未晒ライナーとに大別される。 2. Description of the Related Art Conventionally, a box such as a packaging box includes a cardboard box that is made of a corrugated cardboard sheet in addition to a white paperboard. The corrugated board is composed of a corrugated core and two liners (exterior liner and interior liner) that sandwich the core. In addition, the liner is mainly made of white liner whose raw material is bleached pulp as the main material (outermost layer on the surface of the liner) and unbleached pulp (the color is brown). Are roughly classified into unbleached liners used for the surface layer.
近年、段ボールに供せられるライナーは、収納物等の保護だけでなく、収納物等が消費者の注意力を強く引き付け、良好な印象を与えることができるように美粧性が要求されており、また良好な印刷見栄えや目視平滑性、目視白色度が要求されている。そこで、通常、ライナーは、表層をＮＢＫＰ、ＬＢＫＰ等の白色度の高い晒パルプで形成し、印刷見栄え、目視平滑性、目視白色度等を向上させ、美粧性を向上させている。一方、裏層や中層は、省資源の観点から脱墨古紙パルプや白色度の低いパルプで形成されている。 In recent years, liners used for corrugated cardboard are required not only to protect stored items, but also to have cosmetics so that the stored items can attract consumers' attention and give a good impression. In addition, good print appearance, visual smoothness, and visual whiteness are required. Therefore, the liner usually has a surface layer formed of bleached pulp having a high whiteness such as NBKP or LBKP to improve printing appearance, visual smoothness, visual whiteness, and the like, and to improve cosmetics. On the other hand, the back layer and the middle layer are formed of deinked waste paper pulp or low whiteness pulp from the viewpoint of resource saving.
また、中層以下の層、すなわち中層及び裏層を隠蔽し、白ライナーの美粧性をより向上させるために、表層よりは白色度が低いが、中層や裏層よりは白色度が高い晒パルプで形成された表下層を、表層と中層（中層を設けない場合は裏層）との間に設けることが一般的に行なわれている。 Moreover, in order to conceal the layers below the middle layer, i.e., the middle layer and the back layer, and improve the cosmetics of the white liner, it is a bleached pulp that has a lower whiteness than the front layer but a higher whiteness than the middle layer and the back layer. In general, the formed front and lower layers are provided between a surface layer and an intermediate layer (a back layer when no intermediate layer is provided).
しかし、近年、省資源の観点から、表層や表下層の晒パルプをバージンパルプから古紙パルプへ置き換える動きが進んでいる。晒パルプを主体に構成された表層及び表下層に古紙パルプが増配されると、古紙パルプに由来する填料や顔料により、表層及び表下層に含有される灰分が増加し、白ライナーの不透明性が向上すると共に、白色度の低い中層以下の層を隠蔽する機能（隠蔽性）が向上し、表層側からの見た目白色度が向上するので、白ライナーの美粧性を向上させることができる。 However, in recent years, from the viewpoint of saving resources, there has been a movement to replace bleached pulp on the surface layer and lower surface layer from virgin pulp to waste paper pulp. When waste paper pulp is increased in the surface layer and lower surface layer mainly composed of bleached pulp, the ash content in the surface layer and lower layer increases due to fillers and pigments derived from waste paper pulp, and the white liner becomes opaque. While improving, the function (hiding property) which conceals the layer below the middle layer with low whiteness improves, and the apparent whiteness from the surface layer side improves, Therefore The cosmetics of a white liner can be improved.
そこで、例えば特許文献１に白板紙の例で示されるように、表層及び表下層に含有される古紙に由来する灰分を増加させることで、白板紙の美粧性を改善する方法が提案されている。この方法は、白板紙の表層又は表下層に、顔料を高い割合で含有させることにより、隠蔽性、目視平滑性、印刷適性を改善し、白板紙の美粧性を向上させるものである。 Then, for example, as shown in the example of white paperboard in patent document 1, the method of improving the cosmetics of white paperboard by increasing the ash derived from the used paper contained in a surface layer and a surface lower layer is proposed. . This method improves the concealing property, visual smoothness, and printability by adding a high proportion of pigment to the surface layer or the lower layer of the white paperboard, and improves the cosmetic properties of the white paperboard.
しかし、白板紙は、白ライナーと異なり、全米坪が４００ｇ／ｍ２を超え、表層及び表下層の各層の米坪は４０ｇ／ｍ２以上である。従って、紙層における繊維間強度を十分有しているため、灰分の増加による表面強度の低下、紙層強度の低下を十分にカバーすることができる。 However, the white paperboard, unlike the white liner, has a total area of more than 400 g / m 2 , and the surface area of each surface layer and lower layer is 40 g / m 2 or more. Therefore, since the inter-fiber strength in the paper layer is sufficient, it is possible to sufficiently cover the decrease in the surface strength and the decrease in the paper layer strength due to the increase in ash.
また、白板紙は、通常３〜９層の多層抄きされた厚紙で、単なる打ち抜きや折り曲げ等により箱状に成型されて比較的軽量物の包装に用いられるため、重量物を包装する段ボールに供せられるライナーほどの表面強度や、耐圧強度は要求されていない。 In addition, white paperboard is usually a cardboard made of 3 to 9 layers, which is formed into a box shape by simple punching or bending, and is used for packaging relatively lightweight items. The surface strength and pressure resistance as much as the liner used are not required.
一方、白ライナーは、全米坪が１００〜３００ｇ／ｍ２程度であり、表層及び表下層の各層の米坪は、通常３５ｇ／ｍ２未満である。従って、表層及び表下層に含有される灰分が増加すると、紙層強度の低下を招くため、製函工程や段ボールシートの製造工程において、表面強度が低下し、また罫線割れの問題が生じる。なお、罫線割れとは、箱状に成型等するために白板紙や白ライナーに罫線を入れて折り曲げた際、白板紙や白ライナーの表層が割れる現象を言う。 On the other hand, the white liner has a total area of about 100 to 300 g / m 2 , and the surface area of each surface layer and lower layer is usually less than 35 g / m 2 . Therefore, when the ash content in the surface layer and the lower layer increases, the strength of the paper layer is lowered, and therefore the surface strength is lowered in the box making process and the corrugated board sheet manufacturing process, and the problem of ruled line cracking occurs. The ruled line cracking refers to a phenomenon in which the surface layer of the white paperboard or the white liner breaks when the white paperboard or the white liner is folded with a ruled line to be molded into a box shape.
ここで、特許文献１に記載された方法を白ライナーに適用すると、白ライナーの表層及び表下層に高い割合で顔料を含有させることによって、白ライナーの美粧性は向上するが、白ライナーの表面強度が低下し、罫線割れの問題が深刻なものとなるため、この方法を白ライナーに適用することはできなかった。 Here, when the method described in Patent Document 1 is applied to a white liner, the cosmetic properties of the white liner are improved by including a pigment in a high proportion in the surface layer and the surface layer of the white liner. This method could not be applied to a white liner because the strength decreased and the problem of ruled line cracking became serious.
また、白ライナーは、上述したように白板紙に比べて全米坪が小さいことに加え、近年、白ライナーの薄物化が益々進行しているため、ライナー全体に対する表層及び表下層の比率が高くなっている。このため、白ライナーの表層及び表下層に含有される灰分を増加させると、重量当たりの実パルプ量が減少し、パルプ繊維間の接着力が低下する。これにより表層や表下層の柔軟性が低下し、表面強度が低下することに加え、白ライナー全体での強度が低下し、白ライナーの加工適性が悪化していた。 In addition, as described above, the white liner has a smaller national basis weight than the white paperboard, and in recent years, the white liner has become increasingly thinner, so the ratio of the surface layer and the lower layer to the entire liner has increased. ing. For this reason, when the ash content contained in the surface layer and the lower layer of the white liner is increased, the actual pulp amount per weight is decreased, and the adhesive force between the pulp fibers is decreased. As a result, the flexibility of the surface layer and the lower layer was lowered, the surface strength was lowered, the strength of the entire white liner was lowered, and the processing suitability of the white liner was deteriorated.
さらにまた、古紙パルプは、バージンパルプより強度が劣ることに加え、リサイクル回数が増すにつれて劣化し、さらに強度が低下していくため、白ライナーの表層又は表下層に古紙パルプが増配されると、白ライナーの強度は一層低下する。従って、白ライナーの加工適性がさらに悪化し、罫線割れの問題をより顕著なものとしていた。 Furthermore, the waste paper pulp is inferior in strength to the virgin pulp, deteriorates as the number of recycling increases, and further decreases in strength, so when the waste paper pulp is increased on the surface layer or lower layer of the white liner, The strength of the white liner is further reduced. Accordingly, the processability of the white liner is further deteriorated, and the problem of ruled line cracking is made more remarkable.
そこで、例えば特許文献２に示されるように、白ライナーの表面にポリアクリルアミド（ＰＡＭ）が配合された塗工液を塗工し、白ライナーの強度の低下を防止することが提案されている。しかし、この方法によると、白ライナーの強度を向上させることはできるが、白ライナーが剛直になるため、白ライナーの加工適性を向上させることはできなかった。
本発明は、上述したような実情に鑑みてなされたもので、その目的とするところは、美粧性及び加工適性に優れ、罫線割れの発生を防止した白ライナーを提供することにある。 The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a white liner that is excellent in cosmetics and processability and prevents occurrence of ruled line cracks.
本発明の上記目的は、少なくとも表層、表下層、及び裏層の３層の紙層を有し、全米坪が１００〜３００ｇ／ｍ２となるように長網多層抄紙機にて抄造され、また前記各層には古紙パルプが５０％以上配合されて成る段ボールに供せられる白ライナーであって、前記表層の表出面のＪＩＳ−Ｐ８１２３に準拠する白色度が６０％以上であり、前記表層及び前記表下層がそれぞれ灰分を１５％以上含有し、また前記表層及び前記表下層に澱粉を主体とする紙力増強剤が添加されていることを特徴とする白ライナーを提供することによって達成される。 The object of the present invention is at least three paper layers of a surface layer, a front surface layer, and a back layer, and is made by a long-mesh multi-layer paper machine so that the total area of the US basis is 100 to 300 g / m 2. Each layer is a white liner used for corrugated cardboard containing 50% or more of waste paper pulp, and the whiteness according to JIS-P8123 of the exposed surface of the surface layer is 60% or more. This is achieved by providing a white liner characterized in that each of the surface and lower layers contains ash content of 15% or more, and a paper strength enhancer mainly composed of starch is added to the surface layer and the surface and lower layers.
また、本発明の上記目的は、前記表層及び前記表下層以外の層に、澱粉を主体とする紙力増強剤が添加されていることを特徴とする白ライナーを提供することによって、効果的に達成される。 In addition, the object of the present invention is effectively achieved by providing a white liner characterized in that a paper strength enhancer mainly composed of starch is added to the surface layer and layers other than the surface lower layer. Achieved.
また、本発明の上記目的は、前記澱粉の添加量が、澱粉添加層のパルプに対し２〜１０ｋｇ／ｔであることを特徴とする白ライナーを提供することによって、より効果的に達成される。 The above-mentioned object of the present invention is achieved more effectively by providing a white liner characterized in that the amount of starch added is 2 to 10 kg / t with respect to the pulp of the starch-added layer. .
また、本発明の上記目的は、前記表層以外の層にＰＡＭ系紙力増強剤が添加されていることを特徴とする白ライナーを提供することによって、より効果的に達成される。 In addition, the above object of the present invention can be achieved more effectively by providing a white liner characterized in that a PAM paper strength enhancer is added to a layer other than the surface layer.
さらにまた、本発明の上記目的は、前記ＰＡＭ系紙力増強剤の添加量は、ＰＡＭ添加層のパルプに対し０．５〜３ｋｇ／ｔであることを特徴とする白ライナーを提供することによって、より効果的に達成される。 Furthermore, the object of the present invention is to provide a white liner characterized in that the addition amount of the PAM paper strength enhancer is 0.5 to 3 kg / t with respect to the pulp of the PAM addition layer. Achieved more effectively.
本発明に係る段ボールに供せられる白ライナーによれば、少なくとも表層、表下層、及び裏層の３層の紙層を有し、全米坪が１００ｇ／ｍ２〜３００ｇ／ｍ２となるように長網多層抄紙機にて抄造し、各層には古紙パルプを５０％以上配合し、また、表層の表出面のＪＩＳ−Ｐ８１２３に準拠した白色度が６０％以上であり、表層及び表下層が、それぞれ灰分を１５％以上含有し、また表層及び表下層に澱粉を主体とする紙力増強剤を添加することによって、白ライナーの美粧性を向上させることができ、かつ、古紙に由来する灰分が増加しても、白ライナーの表面強度及び白ライナー全体の強度の低下を防止し、さらに白ライナーの柔軟性を維持することができるので加工適性が良好になり、罫線割れの発生も防止することができる。 According to the white liner is subjected to a cardboard according to the present invention, at least the surface layer, Tables lower, and has a paper layer of three layers of the backing layer, as national basis is 100g / m 2 ~300g / m 2 Paper is made by a long-mesh multi-layer paper machine, each layer contains 50% or more of waste paper pulp, and the whiteness according to JIS-P8123 on the surface of the surface layer is 60% or more. The cosmetics of the white liner can be improved by adding a paper strength enhancer mainly composed of starch to the surface layer and the lower layer, respectively, and the ash content derived from the used paper can be improved. Even if it is increased, the surface strength of the white liner and the overall strength of the white liner can be prevented from being lowered, and the flexibility of the white liner can be maintained, so that the processing suitability is improved and the occurrence of ruled line cracking is prevented. Can do.
また、表層及び表下層以外の層にも、澱粉を主体とする紙力増強剤を添加することによって、白ライナーの加工適性をより良好なものとし、罫線割れの発生を防止することもできる。 Further, by adding a paper strength enhancer mainly composed of starch to the surface layer and the layers other than the surface lower layer, the processing suitability of the white liner can be improved, and the occurrence of ruled line cracking can be prevented.
また、澱粉の添加量を、各層のパルプに対し２〜１０ｋｇ／ｔとすることによって、白ライナーの加工適性をより良好なものとし、罫線割れを防止することができる。 Moreover, by making the addition amount of starch 2-10 kg / t with respect to the pulp of each layer, the processability of a white liner can be made more favorable and a ruled line crack can be prevented.
また、表層以外の層にＰＡＭ系紙力増強剤を添加することによって、白ライナーの破裂強度、リング強度を維持することができるので、白ライナー全体の強度の低下を防止することができ、加工適性をより良好なものとすることができる。 In addition, by adding a PAM paper strength enhancer to layers other than the surface layer, it is possible to maintain the burst strength and ring strength of the white liner, so it is possible to prevent a decrease in the strength of the entire white liner, Suitability can be made better.
さらにまた、ＰＡＭの配合量を、各層のパルプに対し０．５〜３ｋｇ／ｔとすることによって、白ライナーの加工適性をより良好なものとすることができる。 Furthermore, the processability of the white liner can be improved by setting the blending amount of PAM to 0.5 to 3 kg / t with respect to the pulp of each layer.
以下、本発明に係る白ライナー（以下、「本白ライナー」と言う。）について、白ライナーが表層、表下層（表層のすぐ下の層）及び裏層の３層の紙層を有する場合を例に詳細に説明する。なお、本発明は必ずしも以下の実施形態に限定されるものではなく、特許請求の範囲を逸脱しない範囲において、その構成を適宜変更できるものであることはいうまでもない。 Hereinafter, in the case of the white liner according to the present invention (hereinafter referred to as “main white liner”), the white liner has three paper layers, a surface layer, a surface layer (a layer immediately below the surface layer), and a back layer. An example will be described in detail. In addition, this invention is not necessarily limited to the following embodiment, and it cannot be overemphasized that the structure can be changed suitably in the range which does not deviate from a claim.
本白ライナーは、上述したように表層、表下層、及び裏層の３層の紙層を有し、全米坪が１００〜３００ｇ／ｍ２となるように、長網多層抄紙機にて抄造されている。 As described above, this white liner has three layers of paper layers, a front layer, a front layer, a back layer, and a back layer, and is made by a long-mesh multi-layer paper machine so that the total area of the US basis is 100 to 300 g / m 2. ing.
本白ライナーの各層の原料パルプには、古紙パルプが５０％以上配合されている。これにより、古紙パルプに由来する填料や顔料の灰分（以下、単に「灰分」と言う。）を１５％以上含有させることができ、本白ライナーの美粧性を向上させることができる。なお、古紙パルプの配合率が５０％未満であると、後述するように白ライナーに灰分を１５％以上含有させることができず、白ライナーの美粧性を向上させることができない。 The raw material pulp of each layer of the white liner contains 50% or more of waste paper pulp. Thereby, 15% or more of the ash content of the filler and pigment derived from waste paper pulp (hereinafter simply referred to as “ash content”) can be contained, and the cosmetic properties of the white liner can be improved. In addition, when the blending ratio of the used paper pulp is less than 50%, the white liner cannot contain ash content of 15% or more as described later, and the white liner's cosmetics cannot be improved.
古紙パルプの原料としては、特に限定されるものではないので、例えば上白、白アート、カード、特白、中白、模造、白マニラ、色上、段ボール、新聞、雑誌、切符、中質反古、台紙、地券等の公知の種々のものを用いることができる。なお、これらの原料は単独で用いても良いし、２種以上を混合して用いても良いが、本白ライナーの美粧性をより向上させるために、白色度の高い古紙パルプ等が増配されることが好ましい。 There are no particular restrictions on the raw material used for waste paper pulp. For example, fine white, white art, card, special white, medium white, imitation, white Manila, color, cardboard, newspaper, magazine, ticket, medium anti-old In addition, various well-known things such as a mount and a ground ticket can be used. These raw materials may be used alone or as a mixture of two or more. However, in order to further improve the cosmetic properties of the present white liner, recycled paper pulp with high whiteness is increased. It is preferable.
また、本白ライナーの表層、表下層、及び裏層の各層に用いられる他の原料パルプとしては、特に限定されるものではないので、例えば針葉樹晒クラフトパルプ（ＮＢＫＰ）や、広葉樹晒クラフトパルプ（ＬＢＫＰ）等の晒クラフトパルプや、針葉樹未晒クラフトパルプ（ＮＵＫＰ）や、広葉樹未晒クラフトパルプ（ＬＵＫＰ）等の未晒クラフトパルプ、グランドパルプ（ＧＰ）、リファイナーグランドパルプ（ＲＧＰ）、サーモメカニカルパルプ（ＴＭＰ）、ケミサーモメカニカルパルプ（ＣＴＭＰ）等の機械パルプ、サルファイトパルプ（ＳＰ）等の化学パルプ等、公知の種々の原料パルプを単独で、あるいは２種以上を混合して用いることができる。 Moreover, as other raw material pulp used for each layer of the surface layer, front surface lower layer, and back layer of the present white liner, it is not particularly limited. For example, softwood bleached kraft pulp (NBKP), hardwood bleached kraft pulp ( Bleached kraft pulp such as LBKP), unbleached kraft pulp such as softwood unbleached kraft pulp (NUKP), hardwood unbleached kraft pulp (LUKP), ground pulp (GP), refiner ground pulp (RGP), thermomechanical pulp (TMP), chemical pulp such as chemithermomechanical pulp (CTMP), chemical pulp such as sulfite pulp (SP), etc., various known raw material pulps can be used alone or in admixture of two or more. .
なお、本白ライナーの表層の表出面のＪＩＳ−Ｐ８１２３に準拠する白色度（以下、単に「白色度」と言う。）が６０％以上となるように、表層の原料パルプには、白色度の高い脱墨古紙パルプ（ＤＩＰ）や、晒パルプ等を用いることが好ましい。白色度が６０％未満であると、本白ライナーの美粧性が低下する。 In addition, the raw material pulp of the surface layer has a whiteness of 60% or more so that the whiteness (hereinafter simply referred to as “whiteness”) conforming to JIS-P8123 on the surface of the surface of the white liner is 60% or more. It is preferable to use high deinked waste paper pulp (DIP) or bleached pulp. If the whiteness is less than 60%, the cosmetic properties of the white liner are lowered.
また、表下層の原料パルプには、裏層を隠蔽し、本白ライナーの美粧性をより向上させるために、表層に用いられる原料パルプよりは白色度が低く、裏層に用いられる原料パルプよりは白色度の高い晒パルプやＤＩＰ等を用いることが好ましい。 Moreover, in order to conceal the back layer and improve the cosmetic properties of this white liner, the raw material pulp of the front and lower layers has a lower whiteness than the raw material pulp used for the front layer, and the raw material pulp used for the back layer It is preferable to use bleached pulp, DIP or the like with high whiteness.
また、本白ライナーの裏層の原料パルプについては、特に限定されるものではないので、上述したような公知の種々の原料パルプを用いることができるが、省資源の観点から、白色度の低いＤＩＰや未晒パルプが一般的に用いられている。 Moreover, since the raw material pulp of the back layer of the white liner is not particularly limited, various known raw material pulps as described above can be used, but from the viewpoint of resource saving, the whiteness is low. DIP and unbleached pulp are generally used.
また、本白ライナーの表層及び表下層は、それぞれ灰分を１５％以上含有している。これにより、本白ライナーの表層側からの印刷見栄え、目視平滑性、目視白色度が向上し、美粧性が向上する。 Moreover, the surface layer and the surface lower layer of this white liner each contain 15% or more of ash. Thereby, the printing appearance from the surface layer side of this white liner, visual smoothness, and visual whiteness improve, and the cosmetics improve.
本白ライナーの表層及び表下層の原料パルプには、澱粉を主体とする紙力増強剤が添加されている。従って、灰分の増加による本白ライナーの表面強度及び本白ライナー全体の強度の低下を防止し、さらに本白ライナーの柔軟性を維持することができるので、本白ライナーは加工適性が良好となり、また罫線割れの発生を防止することができる。 A paper strength enhancer mainly composed of starch is added to the raw pulp of the surface layer and the lower layer of the white liner. Therefore, since the surface strength of the white liner and the overall strength of the white liner can be prevented from being reduced due to the increase in ash content, and the flexibility of the white liner can be maintained, the white liner has good processability. Moreover, generation | occurrence | production of a ruled line crack can be prevented.
なお、本白ライナーは、表層及び表層以外の層、すなわち裏層にも澱粉を主体とする紙力増強剤を添加しても良く、これにより本白ライナーの加工適性をより良好なものとすることができる。 In the present white liner, a paper strength enhancer mainly composed of starch may be added to the surface layer and layers other than the surface layer, that is, the back layer, thereby further improving the processability of the present white liner. be able to.
また、澱粉の添加量は、上述した紙力増強剤を添加する各層（「澱粉添加層」と言う。）のパルプに対し２〜１０ｋｇ／ｔである。澱粉の添加量が澱粉添加層のパルプに対し、２ｋｇ／ｔ未満であると白ライナーの表面強度及び白ライナー全体の強度を向上させ、加工適性を良好なものとすることができず、逆に添加量が１０ｋｇ／ｔを超えても、添加量に比した効果が得られず、製造コストが高くなるので好ましくない。 Moreover, the addition amount of starch is 2-10 kg / t with respect to the pulp of each layer (referred to as “starch addition layer”) to which the above-described paper strength enhancer is added. If the added amount of starch is less than 2 kg / t with respect to the pulp of the starch-added layer, the surface strength of the white liner and the strength of the entire white liner cannot be improved, and the processability cannot be improved. Even if the addition amount exceeds 10 kg / t, the effect as compared with the addition amount cannot be obtained, and the manufacturing cost increases, which is not preferable.
澱粉を主体とする紙力増強剤としては、例えば酸化澱粉、カチオン化澱粉、カルボキシメチル化澱粉、α化澱粉、リン酸エステル化澱粉、リン酸尿素澱粉、未変性澱粉等、公知の種々のものを単独で又は２種以上を混合して添加することができる。なお、これらの澱粉の原料についても特に限定されるものではないので、例えばタピオカ澱粉、馬鈴薯澱粉、甘藷澱粉、小麦澱粉、サゴ澱粉、米澱粉、トウモロコシ澱粉等、公知の種々の原料澱粉を単独で又は２種以上を混合して用いることができる。 Examples of paper strength enhancers mainly composed of starch include various known ones such as oxidized starch, cationized starch, carboxymethylated starch, pregelatinized starch, phosphate esterified starch, urea phosphate starch, and unmodified starch. Can be added alone or in admixture of two or more. In addition, since these starch raw materials are not particularly limited, for example, various known raw material starches such as tapioca starch, potato starch, sweet potato starch, wheat starch, sago starch, rice starch, and corn starch are used alone. Or 2 or more types can be mixed and used.
また、本白ライナーは、表層以外の層、すなわち表下層及び裏層にポリアクリルアミド（ＰＡＭ）系紙力増強剤を必要に応じて添加すると、本白ライナーの破裂強度、ＪＩＳ−Ｐ８１２６のリングクラッシュ法に準拠するリング剛度（リング強度）を維持することができるので、本白ライナー全体の強度低下を防止することができ、加工適性をより良好なものとすることができる。ＰＡＭ系紙力増強剤は、特に限定されるものではないので、例えば共重合ＰＡＭ、アニオンＰＡＭ等の公知の種々のものを、本白ライナーの使用目的やニーズに応じ、単独で又は２種以上を混合して適宜添加することができる。なお、ＰＡＭ系紙力増強剤が表層に添加されると、白ライナーが剛直になり、加工適性が低下するので好ましくない。 In addition, when the white liner is added to the layers other than the surface layer, that is, the lower layer and the back layer, if necessary, the burst strength of the white liner, the ring crush of JIS-P8126 Since the ring rigidity (ring strength) conforming to the law can be maintained, the strength of the entire white liner can be prevented from being lowered, and the processability can be further improved. The PAM paper strength enhancer is not particularly limited. For example, various known ones such as copolymer PAM and anion PAM may be used alone or in combination of two or more depending on the purpose and needs of the white liner. Can be mixed and added as appropriate. If a PAM paper strength enhancer is added to the surface layer, the white liner becomes stiff and the processability is lowered, which is not preferable.
このとき、ＰＡＭ系紙力増強剤の添加量は、ＰＡＭ系紙力増強剤を添加する各層（以下、「ＰＡＭ添加層」と言う。）のパルプに対し０．５〜３ｋｇ／ｔである。ＰＡＭの添加量が、ＰＡＭ添加層のパルプに対し０．５ｋｇ／ｔ未満であるとＰＡＭ系紙力増強剤を添加する効果が現れず、白ライナー全体の強度をより向上させることができないため、白ライナーの加工適性をより向上させることができない。逆に、添加量が３ｋｇ／ｔを超えても、添加量に比した効果が得られず、製造コストが高くなるので好ましくない。 At this time, the addition amount of the PAM paper strength enhancer is 0.5 to 3 kg / t with respect to the pulp of each layer to which the PAM paper strength enhancer is added (hereinafter referred to as “PAM added layer”). Since the addition amount of PAM is less than 0.5 kg / t with respect to the pulp of the PAM addition layer, the effect of adding the PAM paper strength enhancer does not appear, and the strength of the entire white liner cannot be further improved. The processing suitability of the white liner cannot be further improved. On the contrary, even if the addition amount exceeds 3 kg / t, the effect as compared with the addition amount cannot be obtained, and the manufacturing cost becomes high.
本白ライナーの各層の原料には、本発明の効果に影響のない範囲内で、例えばサイズ剤、填料分散剤、ｐＨ調整剤、増粘剤、流動性改良剤、消泡剤、抑泡剤、離型剤、浸透剤、着色染料、着色顔料、紫外線吸収剤、酸化防止剤、防腐剤、防バイ剤、耐水化剤、蛍光消去剤、ピッチコントロール剤、スライムコントロール剤等の公知の種々の添加剤が、単独で、あるいは２種以上が混合されて添加されていても良い。 For the raw material of each layer of the white liner, for example, a sizing agent, a filler dispersant, a pH adjuster, a thickener, a fluidity improver, an antifoaming agent, and an antifoaming agent are within a range that does not affect the effect of the present invention. , Various releasing agents, penetrants, coloring dyes, coloring pigments, ultraviolet absorbers, antioxidants, antiseptics, antibacterial agents, water-proofing agents, fluorescent quenchers, pitch control agents, slime control agents, etc. Additives may be added alone or in admixture of two or more.
本白ライナーの抄紙方法についても、特に限定されるものではないので、酸性抄紙法、中性抄紙法、アルカリ性抄紙法のいずれであっても良い。 The paper making method of the white liner is not particularly limited, and any of acid paper making method, neutral paper making method and alkaline paper making method may be used.
なお、本白ライナーは、上述したように表層、表下層及び裏層の３層の紙層から成るものに限定されるものではなく、この他、表層、表下層、中層及び裏層の４層以上の紙層を有するものであっても適用できる。 The white liner is not limited to the three layers of the paper layer of the front layer, the front lower layer, and the back layer as described above. In addition, the white liner has four layers of the front layer, the front lower layer, the middle layer, and the back layer. Even those having the above paper layers can be applied.
以下、本発明に係る白ライナーの効果を確認するために、以下のような試料を作成し、美粧性や加工適性等を評価する試験を行なった。なお、本発明はこの実施例に限定されるものではない。 Hereinafter, in order to confirm the effect of the white liner according to the present invention, the following samples were prepared, and tests for evaluating cosmetic properties, processability, and the like were performed. In addition, this invention is not limited to this Example.
本発明に係る５種類の白ライナー（これを「実施例１」ないし「実施例５」とする。）と、これらの実施例１ないし実施例５と比較検討するための５種類の白ライナー（これを「比較例１」ないし「比較例５」とする。）を、表１に示すような表層及び表下層の原料パルプを用いて、表１に示す全米坪となるように長網多層抄紙機にて３層に抄造した。 Five types of white liners according to the present invention (referred to as “Example 1” to “Example 5”) and five types of white liners for comparison with these Examples 1 to 5 ( This is referred to as “Comparative Example 1” to “Comparative Example 5”). Using the surface pulp as shown in Table 1 and the raw pulp of the lower layer as the lower layer, the long-mesh multilayer papermaking so as to have the total national basis shown in Table 1 Paper was made into 3 layers with a machine.
このようにして得られた実施例１ないし実施例５、及び比較例１ないし比較例５に係る白ライナーについて、以下の評価試験により評価した結果は、表２に示すとおりであった。 The white liners according to Examples 1 to 5 and Comparative Examples 1 to 5 thus obtained were evaluated by the following evaluation tests, and the results are shown in Table 2.
なお、表２中の「美粧性」とは、成人の男性５名、女性５名が、Ａ４の大きさに調製した紙試料を外観にて美粧性の目視評価を行なったもので、その評価基準は、評価が高いもの上位３位までを◎、４位から６位を○、７位から９位を△、１０位を×とした。 In Table 2, “Beauty” means that five adult males and five females visually evaluated cosmetics on the appearance of paper samples prepared to the size of A4. The criteria were as follows: ◎ from the top three to ◎, ○ from 4th to 6th, △ from 7th to 9th, × from 10th.
また、「加工適性」とは、実機のコルゲーターマシンで、フルート（中芯）との糊合加工を行ない、搬送不良、貼合不良、粉落ち等の設備汚れの発生の有無を確認し、評価したもので、その評価基準は、◎印の「搬送不良、貼合不良、粉落ちとも無く、良好に加工」、○印の「搬送不良、貼合不良、粉落ちの何れかが生じたが、良好に加工」、△印の「搬送不良、貼合不良、粉落ちの何れかが生じ、加工効率が低下」、×印の「搬送不良、貼合不良、粉落ちのいずれも生じ、問題が発現」の４段階とした。 “Processing aptitude” is an actual corrugator machine that is glued with a flute (core) and checked for the occurrence of equipment contamination such as poor conveyance, poor bonding, and powder falling. As for the evaluation criteria, either ◎ marked “Good conveyance, no bonding failure, no powder fall, and good processing”, ○ Circle “Poor conveyance, poor bonding, powder fallen” occurred. , “Good processing”, △ marked “Conveyance failure, bonding failure, powder falling, processing efficiency is reduced”, X mark “Transportation failure, bonding failure, powdering occurred, causing problems Was expressed in 4 stages.
また、「罫線割れ」とは、ＪＩＳ―Ｐ８１１１に準拠して調湿を行ない、１０ｍｍ四方の紙試料を調製した後、表層が内側となるように縦、横それぞれの方向に二つ折りし、縦、横折面での割れの発現の有無を目視で判断し、評価したもので、その評価基準は、○印の「縦横とも割れは生じず」、△印の「縦横のいずれか一方のみ、割れが生じた」、×印の「縦横の両方とも割れが生じた」の３段階とした。 In addition, “ruled line cracking” refers to humidity control according to JIS-P8111, and after preparing a 10 mm square paper sample, it is folded in half in the vertical and horizontal directions so that the surface layer is inside. , The presence or absence of the occurrence of cracks on the laterally folded surface was visually judged and evaluated, and the evaluation criteria were `` No cracks occurred in both vertical and horizontal directions '' of ○ mark, `` Only one of the vertical and horizontal directions of △, The three stages were “cracking occurred” and “x and cracks occurred both vertically and horizontally”.
また、「表面強度」とは、紙の幅方向を紙試料の幅方向とし、幅１００ｍｍの紙試料を調製し、この紙試料の表面に黒色オフセットインキを用いて、ＲＩ印刷適性試験機（明製作所製）にて黒ベタ印刷を行ない、紙試料表面の繊維の取られ具合を「５」が「最良」、「１」が「最も悪い」の５段階で評価した。 “Surface strength” means that the width direction of the paper is the width direction of the paper sample, a paper sample having a width of 100 mm is prepared, and black offset ink is used on the surface of the paper sample to test the RI printability tester (brightness). (Made by Seisakusho Co., Ltd.) was used for black solid printing, and the degree of fiber removal on the surface of the paper sample was evaluated in five stages, “5” being “best” and “1” being “worst”.
また、「印刷見栄え」とは、紙の幅方向を紙試料の幅方向とし、幅１００ｍｍの紙試料を調製し、この紙試料の表面に赤色オフセットインキを用いて、ＲＩ印刷適性試験機（明製作所製）にて、１回転／分の速度でベタ印刷を行ない、赤色ベタ印刷の印刷ムラを、成人の男性５名、女性５名が目視評価したものを「５」が「最良」、「１」が「最も悪い」の５段階で評価した。 In addition, the “printing appearance” means that the width direction of the paper is the width direction of the paper sample, a paper sample having a width of 100 mm is prepared, and a red offset ink is used on the surface of the paper sample. Manufactured by Seisakusho Co., Ltd.), solid printing was performed at a speed of 1 revolution / minute, and the printing unevenness of red solid printing was visually evaluated by five adult males and five females. “1” was rated in 5 grades, “worst”.
また、「目視平滑性」とは、成人の男性５名、女性５名が、Ａ４の大きさに調製した紙試料の表面を目視観察し、平滑性が高く感じられる度合いを「５」が「最良」、「１」が「最も悪い」の５段階で評価した。 “Visual smoothness” means that five adult males and five females visually observe the surface of a paper sample prepared to the size of A4, and “5” is “high smoothness”. Evaluation was made in five levels, “best” and “1” being “worst”.
また、「目視白色度」とは、成人の男性５名、女性５名が、Ａ４の大きさに調製した紙試料の表面を目視観察し、白色度が高く感じられる度合いを「５」が「最良」、「１」が「最も悪い」の５段階で評価した。 “Visual whiteness” means that five adult males and five females visually observe the surface of a paper sample prepared to a size of A4, and “5” indicates that the degree of whiteness is felt high. Evaluation was made in five levels, “best” and “1” being “worst”.
さらにまた、「製造コスト」とは、坪量あたりの製造コストを「５」が「最良」、「１」が「最も悪い」の５段階で評価した。
Furthermore, “manufacturing cost” was evaluated based on the manufacturing cost per basis weight in five stages, “5” being “best” and “1” being “worst”.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004371123A JP4656933B2 (en) | 2004-12-22 | 2004-12-22 | White liner |
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| JP2004371123A JP4656933B2 (en) | 2004-12-22 | 2004-12-22 | White liner |
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| JP4656933B2 JP4656933B2 (en) | 2011-03-23 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009091687A (en) * | 2007-10-09 | 2009-04-30 | Daio Paper Corp | Multilayer cardboard |
| JP2010084285A (en) * | 2008-09-30 | 2010-04-15 | Nichiyu Solution Inc | Exudation inhibitor for paperboard and method for manufacturing paperboard |
| CN102877357A (en) * | 2012-09-11 | 2013-01-16 | 江西弘泰纸业有限公司 | Preparation method of thick paperboard with high bonding strength between paperboards |
| JP2014019975A (en) * | 2012-07-18 | 2014-02-03 | Hokuetsu Kishu Paper Co Ltd | White paperboard |
| JP2018040070A (en) * | 2016-09-05 | 2018-03-15 | 王子ホールディングス株式会社 | White liner for cardboard, manufacturing method therefor, and white cardboard |
| JP2019163082A (en) * | 2018-03-20 | 2019-09-26 | 大王製紙株式会社 | Tissue paper storage body |
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| JPH0641896A (en) * | 1991-10-25 | 1994-02-15 | Honshu Paper Co Ltd | Patent-coated board |
| JP2001146697A (en) * | 1999-11-19 | 2001-05-29 | Oji Paper Co Ltd | Decoration liner |
| JP2003166190A (en) * | 2001-11-22 | 2003-06-13 | Sony Corp | Surface layer produced by using waste magazine paper |
| JP2003268699A (en) * | 2002-03-07 | 2003-09-25 | Daio Paper Corp | Method for producing liner |
| JP2004231901A (en) * | 2003-01-31 | 2004-08-19 | Seiko Pmc Corp | Resin composition for surface coating, method of manufacturing coated paper and coated paper |
| JP2005200773A (en) * | 2004-01-13 | 2005-07-28 | Daio Paper Corp | Liner |
| JP2006336165A (en) * | 2005-06-03 | 2006-12-14 | Daio Paper Corp | Method for producing white liner, and white liner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6080969A (en) * | 1983-10-13 | 1985-05-08 | Nissan Motor Co Ltd | Power steering gear |
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| JPH0641896A (en) * | 1991-10-25 | 1994-02-15 | Honshu Paper Co Ltd | Patent-coated board |
| JP2001146697A (en) * | 1999-11-19 | 2001-05-29 | Oji Paper Co Ltd | Decoration liner |
| JP2003166190A (en) * | 2001-11-22 | 2003-06-13 | Sony Corp | Surface layer produced by using waste magazine paper |
| JP2003268699A (en) * | 2002-03-07 | 2003-09-25 | Daio Paper Corp | Method for producing liner |
| JP2004231901A (en) * | 2003-01-31 | 2004-08-19 | Seiko Pmc Corp | Resin composition for surface coating, method of manufacturing coated paper and coated paper |
| JP2005200773A (en) * | 2004-01-13 | 2005-07-28 | Daio Paper Corp | Liner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009091687A (en) * | 2007-10-09 | 2009-04-30 | Daio Paper Corp | Multilayer cardboard |
| JP2010084285A (en) * | 2008-09-30 | 2010-04-15 | Nichiyu Solution Inc | Exudation inhibitor for paperboard and method for manufacturing paperboard |
| JP2014019975A (en) * | 2012-07-18 | 2014-02-03 | Hokuetsu Kishu Paper Co Ltd | White paperboard |
| CN102877357A (en) * | 2012-09-11 | 2013-01-16 | 江西弘泰纸业有限公司 | Preparation method of thick paperboard with high bonding strength between paperboards |
| CN102877357B (en) * | 2012-09-11 | 2015-06-17 | 江西弘泰电子信息材料有限公司 | Preparation method of thick paperboard with high bonding strength between paperboards |
| JP2018040070A (en) * | 2016-09-05 | 2018-03-15 | 王子ホールディングス株式会社 | White liner for cardboard, manufacturing method therefor, and white cardboard |
| JP2019163082A (en) * | 2018-03-20 | 2019-09-26 | 大王製紙株式会社 | Tissue paper storage body |
| JP7224108B2 (en) | 2018-03-20 | 2023-02-17 | 大王製紙株式会社 | tissue paper container |
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