JP7734063B2 - How to check the water damage history of paperboard - Google Patents
How to check the water damage history of paperboardInfo
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Description
本発明は、板紙の水濡れの履歴確認方法に関する。 The present invention relates to a method for checking the water wetting history of paperboard.
石膏ボードは、石膏を板紙で被覆した建築材料であり（特許文献１）、安価であるが非常に丈夫であり、断熱や遮音性が高いため、建材として広く使われ、用途に合わせた種類がある。板紙は、段ボールの表裏にも使用される。 Gypsum board is a building material made of gypsum covered with paperboard (Patent Document 1). It is inexpensive yet very strong, with excellent thermal and sound insulation properties, making it widely used as a building material, with various types available to suit different applications. Paperboard is also used on the front and back of cardboard.
板紙が何らかの理由で水に濡れた場合、時間が経過すると水分が蒸発し、目視では水濡れの有無が確認できなくなるという課題があった。特に、上水（水道水）による浸水においては、不純物が少ないためこの傾向が顕著である。 If paperboard gets wet for some reason, the water evaporates over time, making it impossible to visually check whether it has been wet. This problem is particularly pronounced when it comes to water from tap water, as it contains few impurities.
本発明は、板紙の水濡れの履歴を確認することを目的とする。 The purpose of this invention is to check the water wetting history of paperboard.
板紙の水濡れの履歴確認方法は、メタノール、エタノールまたはイソプロパノールの水溶液を、１０％以上の所定濃度で板紙の表面に噴霧する工程と、前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、を含むことを特徴とする。 A method for checking the water wetting history of paperboard includes the steps of spraying an aqueous solution of methanol, ethanol, or isopropanol at a predetermined concentration of 10% or more onto the surface of the paperboard, and visually checking within 5 minutes of spraying the aqueous solution to see if any color shading appears on the surface of the paperboard due to differences in penetration of the aqueous solution.
本発明によれば、噴霧するのが純水ではないため、それ自体が水濡れの履歴にはならない。そして、発明者は、板紙の水濡れの履歴の確認に最適な濃度を実験により見出した。 In this invention, the sprayed water is not pure water, so it does not itself indicate a history of water wetting. The inventors then conducted experiments to find the optimal concentration for checking the water wetting history of paperboard.
以下に、図面を参照して、本発明の実施形態を具体的かつ詳細に説明する。全図において同一の符号を付した部材は同一又は同等の機能を有するものであり、その繰り返しの説明を省略する。なお、図形の大きさは倍率に必ずしも一致するものではない。 Embodiments of the present invention will be described in detail below with reference to the drawings. Components with the same reference numerals throughout the drawings have the same or equivalent functions, and their repeated explanation will be omitted. Note that the size of the figures does not necessarily correspond to the magnification.
建材の一種である石膏ボードの板紙や、梱包材として広く使用されている段ボールの板紙が何らかの理由で水に濡れた場合、時間が経過すると水分が蒸発し、目視では水濡れの有無が確認できなくなる。特に、上水(水道水)による浸水においては、夾雑物が少ないためこの傾向が顕著である。なお、本実施形態では、石膏ボードの石膏を被覆する石膏ボード原紙および段ボールの中芯（波状紙）に貼り合わせるライナは、いずれも、板紙に含まれるものとする。 If the paperboard used in gypsum board, a type of building material, or the paperboard used in cardboard, which is widely used as packaging, becomes wet for some reason, the moisture evaporates over time, making it impossible to visually check whether or not the material is wet. This tendency is particularly pronounced when the material is submerged in tap water (tap water), as there is little impurity present. In this embodiment, both the gypsum board base paper that covers the gypsum in gypsum board and the liner that is attached to the core (corrugated paper) of cardboard are considered to be included in the term paperboard.
板紙は、主に新聞紙や段ボールを回収した古紙が原料となっている。新聞紙や段ボールを構成する紙の主成分はパルプ繊維であり、パルプ繊維の主成分は多糖類で、その大部分はセルロースである。図１にセルロース分子の物理変化モデルを示す。一度紙が浸水すると、水分子によってセルロース繊維の分子構造に変化が生じる。結合が乱れることで浸透特性に変化が生じると考えられる。これを利用すれば、板紙の水濡れの履歴を確認することができると考え、本願の発明者は実験を行った。 Paperboard is made primarily from recycled paper, such as newspapers and cardboard. The main component of the paper that makes up newspapers and cardboard is pulp fiber, which is primarily made up of polysaccharides, most of which is cellulose. Figure 1 shows a model of the physical changes that occur in cellulose molecules. Once paper is submerged in water, the molecular structure of the cellulose fibers changes due to the water molecules. It is thought that this disruption of bonds causes changes in the permeability characteristics. The inventors of this application conducted experiments, believing that this could be used to confirm the water wetting history of paperboard.
実験では、板紙として、石膏ボード原紙、段ボール原紙のライナＣ５、Ｋ５、Ｋ５白、Ｋ６を使用した（図２）。ライナについて規定するJIS P 3902に従って、Ｃ５は古紙含有率９０％以上の紙質で１６０ｇ～１７０ｇ／ｍ２の厚さであり、Ｋ５は古紙含有率５０％以上の紙質で１７０ｇ～１８０ｇ／ｍ２の厚さであり、Ｋ６は古紙含有率５０％以上の紙質で２１０ｇ～２２０ｇ／ｍ２の厚さであることとした。Ｋ５白は、表面が白色であり、それ以外の板紙の表面はクラフト色である。板紙は、１００ｍｍ×１００ｍｍにカットして使用した。 In the experiment, gypsum board and cardboard linerboards C5, K5, K5 White, and K6 were used (Figure 2). According to JIS P 3902, which specifies linerboards, C5 is a paper quality with a recycled paper content of 90% or more and a thickness of 160-170 g/ m² , K5 is a paper quality with a recycled paper content of 50% or more and a thickness of 170-180 g/ m² , and K6 is a paper quality with a recycled paper content of 50% or more and a thickness of 210-220 g/ m² . K5 White has a white surface, while the other paperboard surfaces are kraft-colored. The paperboard was cut to 100 mm x 100 mm.
あらかじめ、板紙に水道水５００μＬを滴下し、２５°Ｃ環境下で自然吸水・乾燥させることで、水濡れの履歴がある状態にした。そこに、一価アルコールのうちで水に対して溶解度の高いメタノール、エタノールおよびイソプロパノールのそれぞれを所定割合で水溶液とした。エタノールの濃度は、０、１０、１５、２０、２５、３０、３５、４０、４５、５０、５５、６０、６５、７０％とし、メタノールおよびイソプロパノールそれぞれの濃度は、０、１０、１５、２０、２５、３０、３５、４０％とした。溶媒は純水を使用した。 First, 500 μL of tap water was dropped onto the paperboard, and the paperboard was allowed to naturally absorb and dry in a 25°C environment, creating a water-wet condition. Methanol, ethanol, and isopropanol, which are monohydric alcohols with high solubility in water, were then dissolved in aqueous solutions at specified ratios. The ethanol concentrations were 0, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, and 70%, while the methanol and isopropanol concentrations were 0, 10, 15, 20, 25, 30, 35, and 40%. Pure water was used as the solvent.
水溶液を霧吹きで均一になるように定量噴霧し、目視観察を行った。詳しくは、板紙の表面に、水溶液の浸透差によって色の濃淡が現れるかどうかを目視で確認した。観察は、噴霧前、噴霧直後、３０秒後、５分後に行った。 A fixed amount of the aqueous solution was sprayed evenly using a spray bottle, and visual observation was then made. Specifically, the surface of the paperboard was visually inspected to see if any variations in color tone were caused by differences in penetration of the aqueous solution. Observations were made before spraying, immediately after spraying, 30 seconds later, and 5 minutes later.
例えば、図３は、濃度２０％メタノール水溶液の噴霧から５分後の写真である。図４は、濃度４０％メタノール水溶液の噴霧から５分後の写真である。図５は、濃度２０％エタノール水溶液の噴霧から５分後の写真である。図６は、濃度４０％エタノール水溶液の噴霧から５分後の写真である。図７は、濃度１０％イソプロパノール水溶液の噴霧から５分後の写真である。図８は、濃度１５％イソプロパノール水溶液の噴霧から５分後の写真である。 For example, Figure 3 is a photograph taken 5 minutes after spraying a 20% methanol aqueous solution. Figure 4 is a photograph taken 5 minutes after spraying a 40% methanol aqueous solution. Figure 5 is a photograph taken 5 minutes after spraying a 20% ethanol aqueous solution. Figure 6 is a photograph taken 5 minutes after spraying a 40% ethanol aqueous solution. Figure 7 is a photograph taken 5 minutes after spraying a 10% isopropanol aqueous solution. Figure 8 is a photograph taken 5 minutes after spraying a 15% isopropanol aqueous solution.
実験結果は、次表の通りである。表において、〇は、噴霧直後から５分後まで目視確認可能だったことを示し、△は、噴霧直後３０秒間は目視確認可能であったが５分経過後は目視確認が困難だったことを示し、×は、噴霧直後から目視確認が困難だったことを示す。 The experimental results are shown in the following table. In the table, ◯ indicates that the substance was visible from immediately after spraying until 5 minutes later, △ indicates that the substance was visible for 30 seconds immediately after spraying but was difficult to see after 5 minutes, and × indicates that it was difficult to see the substance immediately after spraying.
石膏ボード原紙に対して行った実験では、メタノールまたはエタノールの水溶液であれば、濃度０～４０％で目視確認が可能であった。また、イソプロパノールの水溶液であれば、濃度０～１５％で目視確認が可能であった。 In experiments conducted on gypsum board base paper, visual confirmation was possible with aqueous methanol or ethanol solutions at concentrations of 0 to 40%. Furthermore, visual confirmation was possible with aqueous isopropanol solutions at concentrations of 0 to 15%.
段ボール原紙のライナＣ５に対して行った実験では、メタノールまたはエタノールの水溶液であれば、濃度０～３０％で目視確認が可能であった。また、イソプロパノールの水溶液であれば、濃度０～１５％で目視確認が可能であった。 In experiments conducted on cardboard liner C5, visual confirmation was possible with aqueous methanol or ethanol solutions at concentrations of 0 to 30%. Furthermore, visual confirmation was possible with aqueous isopropanol solutions at concentrations of 0 to 15%.
段ボール原紙のライナＫ５に対して行った実験では、メタノールの水溶液であれば、濃度０～３０％で目視確認が可能であった。エタノールの水溶液であれば、濃度０～２０％で目視確認が可能であった。イソプロパノールの水溶液であれば、濃度０～１０％で目視確認が可能であった。 In experiments conducted on liner K5 cardboard, visual confirmation was possible with aqueous methanol solutions at concentrations of 0 to 30%. Visual confirmation was possible with aqueous ethanol solutions at concentrations of 0 to 20%. Visual confirmation was possible with aqueous isopropanol solutions at concentrations of 0 to 10%.
段ボール原紙のライナＫ５白に対して行った実験では、メタノールの水溶液であれば、濃度０～２５％で目視確認が可能であった。エタノールの水溶液であれば、濃度０～２０％で目視確認が可能であった。一方、イソプロパノールの水溶液では、濃度１０％以上で目視確認が不可能であった。 In experiments conducted on liner K5 white cardboard, visual confirmation was possible with aqueous methanol solutions at concentrations of 0-25%. Visual confirmation was possible with aqueous ethanol solutions at concentrations of 0-20%. On the other hand, visual confirmation was impossible with aqueous isopropanol solutions at concentrations of 10% or higher.
段ボール原紙のライナＫ６に対して行った実験では、メタノールの水溶液であれば、濃度０～３０％水溶液で目視確認が可能であった。エタノールの水溶液であれば、濃度０～２０％水溶液で目視確認が可能であった。一方、イソプロパノールの水溶液であれば、濃度０～１０％水溶液で目視確認が可能であった。 In experiments conducted on cardboard liner K6, visual confirmation was possible with aqueous methanol solutions at concentrations of 0 to 30%. Visual confirmation was possible with aqueous ethanol solutions at concentrations of 0 to 20%. Meanwhile, visual confirmation was possible with aqueous isopropanol solutions at concentrations of 0 to 10%.
なお、濃度０％（純水）については、全てのケースで目視確認が可能であったが、噴霧後の時間が経過するといずれの板紙においても表面が寄れてしまい、その後の使用に差し支えがあることがわかった。 In addition, for the 0% concentration (pure water), visual confirmation was possible in all cases, but it was found that the surface of all paperboards became distorted over time after spraying, making them unusable thereafter.
以上の実験結果から見出した、板紙の水濡れの履歴確認方法は次の通りである。 Based on the results of the above experiments, the following method was discovered for checking the water wetting history of paperboard.
（１）板紙の水濡れの履歴確認方法は、メタノールまたはエタノールの水溶液を、濃度１０％以上２０％以下で、板紙の表面に噴霧する工程と、前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、を含む。 (1) A method for checking the water wetting history of paperboard includes the steps of spraying an aqueous solution of methanol or ethanol at a concentration of 10% to 20% onto the surface of the paperboard, and visually checking within 5 minutes of spraying the aqueous solution to see if any color shading appears on the surface of the paperboard due to differences in penetration of the aqueous solution.
（２）板紙の水濡れの履歴確認方法は、メタノールの水溶液を、濃度１０％以上２５％以下で、板紙の表面に噴霧する工程と、前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、を含む。 (2) A method for checking the water wetting history of paperboard includes the steps of spraying an aqueous solution of methanol at a concentration of 10% to 25% onto the surface of the paperboard, and visually checking within 5 minutes of spraying the aqueous solution to see if any color shading appears on the surface of the paperboard due to differences in penetration of the aqueous solution.
（３）（１）又は（２）に記載された板紙の水濡れの履歴確認方法において、前記板紙は、石膏ボード原紙であることを特徴としてもよい。 (3) In the method for checking the water wetting history of paperboard described in (1) or (2), the paperboard may be gypsum board base paper.
（４）（１）又は（２）に記載された板紙の水濡れの履歴確認方法において、前記板紙は、段ボール原紙のライナであり、前記ライナの紙質および厚さは、Ｃ５（古紙含有率９０％以上；１６０ｇ～１７０ｇ／ｍ２）であることを特徴としてもよい。 (4) In the method for checking the water wetting history of paperboard described in (1) or (2), the paperboard may be a liner of a cardboard base paper, and the paper quality and thickness of the liner may be C5 (recycled paper content of 90% or more; 160 g to 170 g/m 2 ).
（５）（１）又は（２）に記載された板紙の水濡れの履歴確認方法において、前記板紙は、段ボール原紙のライナであり、前記ライナの紙質および厚さは、Ｋ５（古紙含有率５０％以上；１７０ｇ～１８０ｇ／ｍ２）であることを特徴としてもよい。 (5) In the method for checking the water wetting history of paperboard described in (1) or (2), the paperboard may be a liner of a cardboard base paper, and the paper quality and thickness of the liner may be K5 (recycled paper content of 50% or more; 170 g to 180 g/m 2 ).
（６）（１）又は（２）に記載された板紙の水濡れの履歴確認方法において、前記板紙は、段ボール原紙のライナであり、前記ライナの前記表面は、白色であり、前記ライナの紙質および厚さは、Ｋ５（古紙含有率５０％以上；１７０ｇ～１８０ｇ／ｍ２）であることを特徴としてもよい。 (6) In the method for checking the water wetting history of paperboard described in (1) or (2), the paperboard may be a liner of a cardboard base paper, the surface of the liner is white, and the paper quality and thickness of the liner are K5 (recycled paper content of 50% or more; 170 g to 180 g/m 2 ).
（７）（１）又は（２）に記載された板紙の水濡れの履歴確認方法において、前記板紙は、段ボール原紙のライナであり、前記ライナの紙質および厚さは、Ｋ６（古紙含有率５０％以上；２１０ｇ～２２０ｇ／ｍ２）であることを特徴としてもよい。 (7) In the method for checking the water wetting history of paperboard described in (1) or (2), the paperboard may be a liner of a cardboard base paper, and the paper quality and thickness of the liner may be K6 (recycled paper content of 50% or more; 210 g to 220 g/m 2 ).
（８）板紙の水濡れの履歴確認方法は、エタノールの水溶液を、濃度１０％以上２５％以下で、板紙の表面に噴霧する工程と、前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、を含み、前記板紙は、石膏ボード原紙または段ボール原紙のライナであり、前記ライナの紙質および厚さは、Ｃ５（古紙含有率９０％以上；１６０ｇ～１７０ｇ／ｍ２）である。 (8) A method for checking the water wetting history of paperboard includes the steps of spraying an aqueous solution of ethanol at a concentration of 10% to 25% onto the surface of the paperboard, and visually checking within 5 minutes of spraying the aqueous solution to see if any color shading appears on the surface of the paperboard due to differences in penetration of the aqueous solution, wherein the paperboard is a liner of gypsum board base paper or corrugated cardboard base paper, and the paper quality and thickness of the liner are C5 (recycled paper content of 90% or more; 160 g to 170 g/m 2 ).
（９）板紙の水濡れの履歴確認方法は、メタノールの水溶液を、濃度１０％以上３０％以下で、板紙の表面に噴霧する工程と、前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、を含み、前記板紙は、石膏ボード原紙または段ボール原紙のライナであり、前記ライナの紙質および厚さは、Ｃ５（古紙含有率９０％以上；１６０ｇ～１７０ｇ／ｍ２）、Ｋ５（古紙含有率５０％以上；１７０ｇ～１８０ｇ／ｍ２）またはＫ６（古紙含有率５０％以上；２１０ｇ～２２０ｇ／ｍ２）のいずれかである。 (9) A method for checking the water wetting history of paperboard includes the steps of spraying an aqueous solution of methanol at a concentration of 10% to 30% onto the surface of the paperboard, and visually checking within 5 minutes of spraying the aqueous solution to see if any color shade appears on the surface of the paperboard due to differences in penetration of the aqueous solution, wherein the paperboard is a liner of gypsum board base paper or corrugated cardboard base paper, and the paper quality and thickness of the liner are either C5 (recycled paper content of 90% or more; 160g to 170g/ m2 ), K5 (recycled paper content of 50% or more; 170g to 180g/ m2 ), or K6 (recycled paper content of 50% or more; 210g to 220g/ m2 ).
（１０）板紙の水濡れの履歴確認方法は、エタノールの水溶液を、濃度１０％以上３０％以下で、板紙の表面に噴霧する工程と、前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、を含み、前記板紙は、石膏ボード原紙または段ボール原紙のライナであり、前記ライナの紙質および厚さは、Ｃ５（古紙含有率９０％以上；１６０ｇ～１７０ｇ／ｍ２）である。 (10) A method for checking the water wetting history of paperboard includes the steps of spraying an aqueous solution of ethanol at a concentration of 10% to 30% onto the surface of the paperboard, and visually checking within 5 minutes of spraying the aqueous solution to see if any color shading appears on the surface of the paperboard due to differences in penetration of the aqueous solution, wherein the paperboard is a liner of gypsum board base paper or corrugated cardboard base paper, and the paper quality and thickness of the liner are C5 (recycled paper content of 90% or more; 160 g to 170 g/m 2 ).
（１１）板紙の水濡れの履歴確認方法は、メタノールまたはエタノールの水溶液を、濃度１０％以上４０％以下で、板紙の表面に噴霧する工程と、前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、を含み、前記板紙は、石膏ボード原紙である。 (11) A method for checking the water wetting history of paperboard includes the steps of spraying an aqueous solution of methanol or ethanol at a concentration of 10% to 40% onto the surface of the paperboard, and visually checking within 5 minutes of spraying the aqueous solution to see if any color shading appears on the surface of the paperboard due to differences in penetration of the aqueous solution, wherein the paperboard is gypsum board base paper.
（１２）板紙の水濡れの履歴確認方法は、イソプロパノールの水溶液を、濃度１０％以上１５％以下で、板紙の表面に噴霧する工程と、前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、を含み、前記板紙は、石膏ボード原紙または段ボール原紙のライナであり、前記ライナの紙質および厚さは、Ｃ５（古紙含有率９０％以上；１６０ｇ～１７０ｇ／ｍ２）である。 (12) A method for checking the water wetting history of paperboard includes the steps of spraying an aqueous solution of isopropanol at a concentration of 10% to 15% onto the surface of the paperboard, and visually checking within 5 minutes of spraying the aqueous solution to see if any color shading appears on the surface of the paperboard due to differences in penetration of the aqueous solution, wherein the paperboard is a liner of gypsum board base paper or corrugated cardboard base paper, and the paper quality and thickness of the liner are C5 (recycled paper content of 90% or more; 160 g to 170 g/m 2 ).
本発明は、上述した実施形態に限定されるものではなく種々の変形が可能である。例えば、実施形態で説明した構成は、実質的に同一の構成、同一の作用効果を奏する構成又は同一の目的を達成することができる構成で置き換えることができる。
The present invention is not limited to the above-described embodiments and various modifications are possible. For example, the configurations described in the embodiments can be replaced with substantially the same configurations, configurations that achieve the same effects, or configurations that can achieve the same objectives.
Claims (12)
前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、
を含むことを特徴とする板紙の水濡れの履歴確認方法。 spraying an aqueous solution of methanol or ethanol at a concentration of 10% to 20% onto the surface of the paperboard;
visually checking whether a color difference occurs on the surface of the paperboard due to a difference in penetration of the aqueous solution within 5 minutes after spraying the aqueous solution;
A method for checking the water wetting history of paperboard, comprising:
前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、
を含むことを特徴とする板紙の水濡れの履歴確認方法。 spraying an aqueous solution of methanol at a concentration of 10% to 25% onto the surface of the paperboard;
visually checking whether a color difference occurs on the surface of the paperboard due to a difference in penetration of the aqueous solution within 5 minutes after spraying the aqueous solution;
A method for checking the water wetting history of paperboard, comprising:
前記板紙は、石膏ボード原紙であることを特徴とする板紙の水濡れの履歴確認方法。 The method for checking the water wetting history of paperboard according to claim 1 or 2,
The method for checking the water wetting history of paperboard, wherein the paperboard is gypsum board base paper.
前記板紙は、段ボール原紙のライナであり、
前記ライナの紙質は、古紙含有率９０％以上であり、
前記ライナの厚さは、１６０ｇ～１７０ｇ／ｍ２であることを特徴とする板紙の水濡れの履歴確認方法。 The method for checking the water wetting history of paperboard according to claim 1 or 2,
the paperboard is a liner for a corrugated board;
The paper quality of the liner has a recycled paper content of 90% or more,
A method for checking the water wetting history of paperboard, characterized in that the thickness of the liner is 160 g to 170 g/m 2.
前記板紙は、段ボール原紙のライナであり、
前記ライナの紙質は、古紙含有率５０％以上であり、
前記ライナの厚さは、１７０ｇ～１８０ｇ／ｍ２であることを特徴とする板紙の水濡れの履歴確認方法。 The method for checking the water wetting history of paperboard according to claim 1 or 2,
the paperboard is a liner for a corrugated board;
The paper quality of the liner has a recycled paper content of 50% or more,
A method for checking the water wetting history of paperboard, characterized in that the thickness of the liner is 170 g to 180 g/m 2.
前記板紙は、段ボール原紙のライナであり、
前記ライナの紙質は、古紙含有率５０％以上であり、
前記ライナの前記表面は、白色であり、
前記ライナの厚さは、１７０ｇ～１８０ｇ／ｍ２であることを特徴とする板紙の水濡れの履歴確認方法。 The method for checking the water wetting history of paperboard according to claim 1 or 2,
the paperboard is a liner for a corrugated board;
The paper quality of the liner has a recycled paper content of 50% or more,
the surface of the liner is white;
A method for checking the water wetting history of paperboard, characterized in that the thickness of the liner is 170 g to 180 g/m 2.
前記板紙は、段ボール原紙のライナであり、
前記ライナの紙質は、古紙含有率５０％以上であり、
前記ライナの厚さは、２１０ｇ～２２０ｇ／ｍ２であることを特徴とする板紙の水濡れの履歴確認方法。 The method for checking the water wetting history of paperboard according to claim 1 or 2,
the paperboard is a liner for a corrugated board;
The paper quality of the liner has a recycled paper content of 50% or more,
A method for checking the water wetting history of paperboard, characterized in that the thickness of the liner is 210 g to 220 g/m 2 .
前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、
を含み、
前記板紙は、石膏ボード原紙または段ボール原紙のライナであり、
前記ライナの紙質は、古紙含有率９０％以上であり、
前記ライナの厚さは、１６０ｇ～１７０ｇ／ｍ２であることを特徴とする板紙の水濡れの履歴確認方法。 spraying an aqueous solution of ethanol at a concentration of 10% to 25% onto the surface of the paperboard;
visually checking whether a color difference occurs on the surface of the paperboard due to a difference in penetration of the aqueous solution within 5 minutes after spraying the aqueous solution;
Including,
The paperboard is a liner for gypsum board or corrugated board,
The paper quality of the liner has a recycled paper content of 90% or more,
A method for checking the water wetting history of paperboard, characterized in that the thickness of the liner is 160 g to 170 g/m 2.
前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、
を含み、
前記板紙は、石膏ボード原紙または段ボール原紙のライナであり、
前記ライナの紙質および厚さは、古紙含有率９０％以上であって１６０ｇ～１７０ｇ／ｍ２、古紙含有率５０％以上であって１７０ｇ～１８０ｇ／ｍ２または古紙含有率５０％以上であって２１０ｇ～２２０ｇ／ｍ２のいずれかであることを特徴とする板紙の水濡れの履歴確認方法。 spraying an aqueous solution of methanol at a concentration of 10% to 30% onto the surface of the paperboard;
visually checking whether a color difference occurs on the surface of the paperboard due to a difference in penetration of the aqueous solution within 5 minutes after spraying the aqueous solution;
Including,
The paperboard is a liner for gypsum board or corrugated board,
The paper quality and thickness of the liner are either 160g to 170g/ m2 with a recycled paper content of 90% or more, 170g to 180g/ m2 with a recycled paper content of 50% or more, or 210g to 220g/ m2 with a recycled paper content of 50% or more.
前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、
を含み、
前記板紙は、石膏ボード原紙または段ボール原紙のライナであり、
前記ライナの紙質は、古紙含有率９０％以上であり、
前記ライナの厚さは、１６０ｇ～１７０ｇ／ｍ２であることを特徴とする板紙の水濡れの履歴確認方法。 spraying an aqueous solution of ethanol at a concentration of 10% to 30% onto the surface of the paperboard;
visually checking whether a color difference occurs on the surface of the paperboard due to a difference in penetration of the aqueous solution within 5 minutes after spraying the aqueous solution;
Including,
The paperboard is a liner for gypsum board or corrugated board,
The paper quality of the liner has a recycled paper content of 90% or more,
A method for checking the water wetting history of paperboard, characterized in that the thickness of the liner is 160 g to 170 g/m 2.
前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、
を含み、
前記板紙は、石膏ボード原紙であることを特徴とする板紙の水濡れの履歴確認方法。 spraying an aqueous solution of methanol or ethanol at a concentration of 10% to 40% onto the surface of the paperboard;
visually checking whether a color difference occurs on the surface of the paperboard due to a difference in penetration of the aqueous solution within 5 minutes after spraying the aqueous solution;
Including,
The method for checking the water wetting history of paperboard, wherein the paperboard is gypsum board base paper.
前記板紙の前記表面に、前記水溶液の浸透差によって色の濃淡が現れるかどうかを、前記水溶液の噴霧から５分以内に目視で確認する工程と、
を含み、
前記板紙は、石膏ボード原紙または段ボール原紙のライナであり、
前記ライナの紙質は、古紙含有率９０％以上であり、
前記ライナの厚さは、１６０ｇ～１７０ｇ／ｍ２であることを特徴とする板紙の水濡れの履歴確認方法。
spraying an aqueous solution of isopropanol at a concentration of 10% to 15% onto the surface of the paperboard;
visually checking whether a color difference occurs on the surface of the paperboard due to a difference in penetration of the aqueous solution within 5 minutes after spraying the aqueous solution;
Including,
The paperboard is a liner for gypsum board or corrugated board,
The paper quality of the liner has a recycled paper content of 90% or more,
A method for checking the water wetting history of paperboard, characterized in that the thickness of the liner is 160 g to 170 g/m 2.
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|---|---|---|---|---|
| JP2002168847A (en) | 2000-09-21 | 2002-06-14 | Fuji Photo Film Co Ltd | Method for detecting moisture/wetting with water, article with detecting label and detecting function, detecting material, and detecting method |
| JP2007246112A (en) | 2006-03-15 | 2007-09-27 | Kyocera Mita Corp | Packing box |
| JP2009068939A (en) | 2007-09-12 | 2009-04-02 | Toppan Printing Co Ltd | Wetting detection sheet |
| JP2016033508A (en) | 2014-07-29 | 2016-03-10 | 日本製紙パピリア株式会社 | Droplet detection sheet |
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| JPH0798309A (en) * | 1993-09-28 | 1995-04-11 | Toppan Printing Co Ltd | Moisture indicator and ink composition for moisture indicator |
| JP3606493B2 (en) * | 1996-06-13 | 2005-01-05 | 大日本印刷株式会社 | Wet print |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002168847A (en) | 2000-09-21 | 2002-06-14 | Fuji Photo Film Co Ltd | Method for detecting moisture/wetting with water, article with detecting label and detecting function, detecting material, and detecting method |
| JP2007246112A (en) | 2006-03-15 | 2007-09-27 | Kyocera Mita Corp | Packing box |
| JP2009068939A (en) | 2007-09-12 | 2009-04-02 | Toppan Printing Co Ltd | Wetting detection sheet |
| JP2016033508A (en) | 2014-07-29 | 2016-03-10 | 日本製紙パピリア株式会社 | Droplet detection sheet |
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