JP2005154940A - Base paper for false adhesive paper and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base paper for a false adhesive paper usable for the subsequently pasting type false adhesive paper having excellent inkjet recordability, hiding properties and peelability. <P>SOLUTION: The base paper for the subsequently pasting type false adhesive paper contains 5-40 wt.% mechanical pulp, a cationic polymer having ≥0.3 meq/g cation strength, and 5-40 wt.% inorganic filler, and has 100-500 mJ internal connection strength measured based on an internal bond method regulated by Japan TAPPI 18-2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a base paper for pseudo-adhesive paper used for pseudo-adhesive paper that has a function of temporarily adhering but easily being peeled off when necessary, and a method for producing the same.

  As such a pseudo-crimped paper, after printing / printing characters / graphics etc. on the base paper for pseudo-adhesive paper, it is produced by providing a pseudo-adhesive layer on the printing / printing surface etc. Paper is known.

  On the other hand, in recent years, inkjet recording apparatuses suitable for high-speed and high-definition printing / printing have become widespread, and their use is also increasing in printing / printing of base paper for pseudo-adhesive paper used for post-paste type pseudo-adhesive paper. And the performance improvement due to the improvement of the ink jet recording apparatus in the past few years is remarkable, and it is regarded as one of the efforts of the paper industry to improve the ink jet recording performance of the base paper for pseudo-adhesive paper in response to this. .

On the other hand, pseudo-adhesive paper, for example, is folded with the pseudo-adhesive layer surface on which various information such as confidential information is printed / printed as the inner surface, and the superimposed surface is pseudo-adhered to conceal the information and mail it. It is often used in postcard systems and the like that read the concealment information by peeling the adhesive part. In such applications, high concealment is required so that confidential information cannot be seen through and read by a third party. Accordingly, in the pseudo-adhesive paper, improvement of opacity is also considered as one of the problems in order to improve concealability.
JP 2002-265903 A JP 2000-364335 A

  Here, as one means for increasing the opacity of paper, a method for increasing the proportion of mechanical pulp in raw pulp is known. However, because mechanical pulp is highly hydrophilic, increasing the proportion of mechanical pulp in the raw material pulp improves opacity, but water-based ink is used along with the pulp fibers in printing and printing using a general inkjet ink recorder. As a result, the phenomenon of ink bleeding (feathering) is likely to occur. The occurrence of the feathering reduces the recognition ability of bar code printing or the like frequently used in the postcard system or the like, for example, and hinders efficient operation of the postcard system.

  On the other hand, it is known that when the proportion of mechanical pulp in the raw material pulp is increased, the internal bond strength of the paper in the Z-axis direction tends to be weakened. Therefore, pseudo-adhesive paper in which when the mechanical pulp is mixed excessively in the base paper for pseudo-adhesive paper used for post-paste type pseudo-adhesive paper, peeling occurs between the paper layers at the time of re-peeling and peels off at the pseudo-adhesive layer. The basic functions cannot be secured.

  Therefore, the main problem of the present invention is that it has the basic functions required for the base paper for pseudo-adhesive paper (removability, suitability for form printing, etc.) and is excellent in both opacity and inkjet recording properties. It is to provide a base paper for paper.

The present invention that has solved the above-described problems and the effects thereof are as follows.
<Invention of Claim 1>
After printing / printing characters / graphics, form a pseudo-adhesive layer that can be peeled and pseudo-bonded when given conditions are applied to the printed / printed surface or non-printed surface under normal conditions. A pseudo-adhesive paper base paper for pseudo-adhesive paper,
5 to 40% by weight of mechanical pulp, a cationic polymer having a cationic strength of 0.3 meq / g or more, 5 to 40% by weight of inorganic filler,
And the base paper for pseudo | simulation adhesive paper characterized by the internal bond strength measured based on the internal bond method prescribed | regulated to JAPAN TAPPI 18-2 being 100-500 mJ.

<Invention of Claim 2>
The mechanical pulp is a single pulp selected from the group of ground wood pulp, pulp ground under pressure, thermomechanical pulp, chemithermomechanical pulp, or a mixed pulp in which two or more kinds are mixed. The base paper for pseudo-adhesive paper according to claim 1.

<Invention of Claim 3>
Pseudo-adhesive layer that, after printing / printing characters / graphics, pseudo-adhesively peels off when given conditions are applied on the printed / printed surface or non-printed / printed surface without bonding under normal conditions Is a method of manufacturing a base paper for pseudo-adhesive paper to form pseudo-adhesive paper,
Papermaking a raw material before papermaking containing 5 to 40% by weight of mechanical pulp, 0.1 to 5% by weight of a cationic polymer having a cationic strength of 0.3 meq / g or more, and 5 to 40% by weight of an inorganic filler,
A method for producing a base paper for pseudo-adhesive paper, characterized in that an internal bond strength measured based on an internal bond method defined in JAPAN TAPPI 18-2 is 100 to 500 mJ.

<Invention of Claim 4>
Pseudo-adhesive layer that, after printing / printing characters / graphics, pseudo-adhesively peels off when given conditions are applied on the printed / printed surface or non-printed / printed surface without bonding under normal conditions Is a method of manufacturing a base paper for pseudo-adhesive paper to form pseudo-adhesive paper,
Coating containing 1 to 10% by weight of a cationic polymer having a cationic strength of 0.3 meq / g or more after papermaking a raw material before papermaking containing 5 to 40% by weight of mechanical pulp and 5 to 40% by weight of inorganic filler Apply the liquid,
A method for producing a base paper for pseudo-adhesive paper, wherein an internal bond strength measured based on an internal bond method defined in JAPAN TAPPI 18-2 is 100 to 500 mJ or more.

<Invention of Claim 5>
The mechanical pulp is a single pulp selected from the group of ground wood pulp, pulp ground under pressure, thermomechanical pulp, chemithermomechanical pulp, or a mixed pulp in which two or more kinds are mixed. The manufacturing method of the base paper for pseudo | simulation adhesive paper of Claim 3 or 4.

  The base paper for pseudo-adhesive paper according to the present invention has high opacity because the proportion of mechanical pulp is 5 to 40% by weight. Moreover, since the mechanical pulp has a high cushioning property, the ink transfer property of the offset ink is excellent, and not only the printing / printing by the ink jet recording apparatus but also the printing / printing by the offset printing apparatus is excellent. Further, since the pseudo adhesive paper base paper contains a cationic polymer having a cation strength of 0.3 meq / g or more, the ink fixing force is strong and the feathering of ink droplets along the pulp fibers is suppressed. In particular, since the cationic polymer is effective for water-based ink, the printability and printability of the ink-jet recording apparatus in which the water-based ink is generally used are excellent. Furthermore, by setting the internal bond strength measured based on the internal bond method defined in JAPAN TAPPI 18-2 in the range of 100 to 500 mJ, there is a significant risk of paper delamination due to mechanical pulp blending. Less. Furthermore, by making the internal bond strength within the above range, paper dust generation troubles during printing or pseudo-adhesive coating can be reduced.

Next, embodiments of the present invention will be described in detail below.
The pseudo-adhesive base paper of the present invention does not adhere to the printed / printed surface or non-printed / printed surface of at least one side of the front and back surfaces in a normal state after printing / printing with various printers such as offset printing and inkjet printers. When a predetermined condition is applied, a pseudo-adhesive layer that is detachably pseudo-bonded is provided and used.

  And, the base paper for pseudo-adhesive paper according to this example is made by making a paper before raw paper containing a raw material pulp containing a mechanical pulp, a cationic polymer and an inorganic filler, or a raw material pulp containing a mechanical pulp and an inorganic filler. After the papermaking raw material containing the paper is made, it can be produced by coating a coating solution containing a cationic polymer.

  As the raw material pulp, used paper pulp such as newspapers, flyers, magazines and copy papers can be used in addition to virgin pulp. The raw material pulp can be used after being bleached if necessary. In that case, it is desirable to bleach by a bleaching method not using chlorine. That is, when bleached pulp is used, it is desirable to use TCF pulp or ECF pulp. The type of mechanical pulp in the raw material pulp is not particularly limited, but it is easy to improve the opacity, and the internal bond strength is easily within the range of the present invention. Therefore, pulp (PWG) and ground wood pulp (RGP) that are crushed under pressure ), Thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), or a single pulp selected from the group consisting of two or more types.

  The proportion of mechanical pulp is 5 to 40% by weight. When the blending amount of the mechanical pulp is less than 5% by weight, the effect of improving the opacity is small. On the other hand, when it exceeds 40% by weight, it is difficult to obtain an effect of preventing delamination, and with the cationic polymer described later. Therefore, it is difficult to obtain an effect of suppressing feathering and an effect of preventing delamination. The ratio of the mechanical pulp can be adjusted by adjusting the blending ratio of the mechanical pulp in the raw material before papermaking. The blending ratio of mechanical pulp in the raw material before paper making and the blending ratio of mechanical pulp in the base paper for pseudo-adhesive paper are almost the same. In addition, the ratio of the mechanical pulp in the base paper for pseudo-adhesive paper can be measured by a fiber composition test method according to JIS P 8120.

  When the cation strength is less than 0.3 meq / g, the effect of improving the feathering is not sufficient, and the ink coloring property and the fixing property (water resistance) are not sufficient. The upper limit of the cation strength is not particularly limited, but the improvement of the effect is reduced from about 2.5 meq / g or more, and the effect is saturated at about 3.0 meq / g, so the upper limit is about 3.0 meq / g. In addition, as a method for measuring the cation strength, there is a so-called “colloidal titration method”. The colloid titration method uses an ion association reaction between colloidal particles, and uses a solution in which an ionic polymer with a known molecular structure is dissolved as a specified solution, and an unknown polymer sample with an ionicity opposite to that of the known sample. This is a method for measuring the ionic strength of the. In the titration method, the cation strength of the cationic polymer can be measured by using an anionic polymer in the specified solution. The cation strength of the cationic polymer contained in the pseudo-adhesive paper base paper can be measured by performing colloidal titration on a heat extraction liquid extracted by a heat extraction method.

  Specific examples of the cationic polymer include dimethyldiallylammonium chloride polymer, dimethyldiallyl chloride / acrylamide copolymer, diallylammonium chloride / acrylamide copolymer, dimethyldiallylammonium chloride / diallylamine / epichlorohydrin copolymer, polymethyldiallylamine. Epichlorohydrin copolymer, polyethyleneimine, polydiallylamine, polyallylamine, JP-A-59-20696, 59-33176, 59-33177, 60-11389, 60-49990, 62-198493 No. 63-115780, JP-A-1-40371, JP-A-6-234268, JP-A-7-125411, JP-A-10-19376, etc. It includes polymers having the cationic polymer, especially containing a quaternary ammonium base is preferred.

When the cationic polymer is blended in the raw material before papermaking, it is desired to be 0.1 to 5% by weight, preferably 0.2 to 3% by weight in the total raw material before papermaking. If it is less than 0.1% by weight, a sufficient anti-feathering effect is not exhibited. Moreover, even if it mixes exceeding 5% by weight, the effect of preventing feathering is saturated and the cost is increased. Moreover, when making it coat in coating liquids, such as a size press liquid, it is desirable to mix | blend 1 to 10 weight% in a coating liquid, Preferably it is 2 to 6 weight%. If it is less than 1% by weight, a sufficient anti-feathering effect is not exhibited. Moreover, even if it mixes exceeding 5% by weight, the effect of preventing feathering is saturated and the cost is increased. When producing a base paper for pseudo-adhesive paper containing a cationic polymer by coating with a coating solution, the coating solution is applied at a coating amount of about 3 to 15 g / m ² with a conventionally known coating machine. Just work. Here, the cationic polymer of the above example may be added to a pseudo-adhesive layer to be described later if necessary, and used for improving the ink jet recording suitability.

  On the other hand, the inorganic filler may be blended with the raw material before paper making so that the ratio of the inorganic filler in the base paper for pseudo-adhesive paper is 5 to 40% by weight. When the filler is less than 5% by weight, the effect of improving opacity is small. On the other hand, when the filler exceeds 40% by weight, it becomes difficult to make the desired internal bond strength in the range of 100 to 500 mJ, and the fixing property of the pseudo-adhesive Becomes worse. The ratio of the filler can be adjusted by appropriately adjusting the blending ratio of the pigment in the raw material before papermaking. The blending ratio of the pigment is appropriately adjusted in consideration of the specific paper making method and the retention rate in the paper. The proportion of the filler in the base paper can be measured by image analysis of the cross section of the base paper, for example, by cutting the base paper with a microtome and analyzing the pigment distribution in the cross section. What is necessary is just to observe the pigment distribution state of a cross section with an electron microscope, an optical microscope, etc. FIG.

  The kind of the inorganic filler is not particularly limited. What is necessary is just to select in consideration of whiteness from the filler used for manufacture of paper. Specific examples include clay, calcite-based precipitated calcium carbonate forming primary or secondary aggregates (manufactured by Shiraishi Kogyo Co., Ltd .: PC, Callite KT), and aragonite-based precipitated forming secondary aggregates. Calcium carbonate (Shiraishi Kogyo Co., Ltd .: Callite SA), calcium carbonate, silica, synthetic fine particle silica, amino surface modified silica, wax surface treated silica, spherical silica, normal calcium, zinc, magnesium, aluminum or titanium, etc. Inorganic fillers such as metal oxides, hydroxides, carbonates and silicates, or mixtures thereof. With these fillers, it is easy to set the whiteness to 70% or more. Among the inorganic filler examples, spindle-shaped or needle-shaped light calcium carbonate is particularly suitable for the present invention. Since this form of calcium carbonate improves the entanglement between the fibers, there is little decrease in the internal bond strength accompanying the pigment blending. Also, when calcium carbonate is agglomerated in a secondary manner, it has a high opacity improving effect and a high opacity paper even if the basis weight is low. It is suitable because it is easy. In particular, it is suitable for use as a base paper for pseudo-adhesive paper used for postcard systems with weight regulation.

  As for the paper making method of the base paper for pseudo-adhesive paper, general paper making machines can be used, and paper machines such as long net paper machines, round net paper machines, twin wire type paper machines, and multi-layer paper machines are used. To make paper.

  Here, the base paper for pseudo-adhesive paper of the present invention has an internal bond strength of 100 to 500 mJ measured based on the internal bond method defined in JAPAN TAPPI 18-2. If the internal bond strength of the pseudo-adhesive paper base paper is less than 100 mJ, the risk of delamination of the paper increases. On the other hand, when the internal bond strength exceeds 500 mJ, it becomes difficult to disaggregate the paper, which causes other adverse effects such as when used paper is used.

  Adjustment of the internal bond strength to the above range can be achieved, for example, by adjusting the amount of paper strength enhancing agent added to the raw material before paper making and the amount of pigment. As the paper strength enhancer, a water-soluble resin, an aqueous emulsion resin, or the like can be used. Specific examples include polyacrylamide, acrylic copolymer resin, PVA, vinyl acetate resin, styrene / butadiene latex, acrylic / styrene copolymer, olefin resin, and the like. If a polyacrylamide resin is used, about 1 to 10 kg / pulpton may be added to the raw material before paper making.

  In addition, the measurement of the internal bond strength by the internal bond method prescribed | regulated to JAPAN TAPPI 18-2 can be measured using an internal bond tester (made by Kumagai Riki Kogyo Co., Ltd.). .

  On the other hand, the pseudo adhesive paper base paper according to the present invention has an ISO whiteness measured based on JIS P 8148 of 70% or more and an opacity measured based on JIS P 8138 of 96 to 100%. desirable. When the whiteness is less than 70%, the opacity is improved, but the contrast as a printed matter is lowered, and the appearance is deteriorated particularly in color printing / printing. In order to conceal the recorded information when the whiteness is 70% or more, an opacity of 96% or more is sufficient. In order to adjust to such whiteness, it may be adjusted by a conventionally known method such as bleaching of raw material pulp.

  On the other hand, the pseudo-adhesive layer is a non-peelable adhesive (hereinafter referred to as “adhesive base”) containing a filler having non-affinity in the adhesive base to give a pseudo-adhesive force. May be provided, or a film showing pseudo-adhesiveness may be provided in close contact with the paper surface according to a conventionally known method.

  When using a pseudo-adhesive, the blending ratio of the non-peeling adhesive and the filler is a general composition of a kind of pseudo-adhesive formed by adding a filler to the peelable adhesive. The split ratio may be sufficient, specifically, about 5 to 500 parts by weight of filler with respect to 100 parts by weight of the peelable adhesive. In the present invention, a particularly preferable range is 10 to 300 parts by weight of the filler with respect to 100 parts by weight of the peelable adhesive.

  As the adhesive base, it can be arbitrarily selected from those conventionally used for usual adhesive bases such as latex, specifically natural rubber, synthetic rubber, etc. Sulfur-free vulcanized natural rubber latex mixed with methyl methacrylate, natural rubber latex obtained by graft copolymerization of methyl methacrylate with natural rubber, acrylic modified rubber latex, rubber latex and protective colloidal acrylic copolymer A mixture with a polymerized emulsion is preferred in terms of blocking resistance, resistance to deterioration over time, and the like.

  The kind of the filler is not particularly limited. Those containing an inorganic pigment, particularly those containing an inorganic pigment having an oil absorption of 80 ml / 100 g or more are suitable. Specific examples of inorganic pigments include calcite-based precipitated calcium carbonate forming primary or secondary aggregates, aragonite-based precipitated calcium carbonate forming secondary aggregates, heavy calcium carbonate, calcined kaolin And synthetic silica. These may be used alone or two or more of them may be mixed. In addition, styrene beads, synthetic fine particle silica, amino surface-modified silica, wax surface-treated silica, spherical silica, ordinary calcium, metal oxides such as zinc, magnesium, aluminum or titanium, hydroxide, carbonate, silicic acid A salt or a mixture thereof may be contained.

  In the present invention, as other auxiliary agents incorporated in the pseudo-adhesive, a lubricant, a printability improver, an antioxidant, an ultraviolet absorber, a conductive agent, a fluorescent dye, a coloring dye, an antiseptic, a humectant, an ink jet An ink fixing agent or the like can be blended as necessary.

The application of the pseudo-adhesive can be performed by a coating method using a conventionally known coating machine. In the present invention, the coating machine is preferably coated using an air knife coater, blade coater, rod metering coater, curtain coater, or roll coater. The coating amount is desirably 3 to 15 g / m ² . If it is less than 3 g / m ² , the desired adhesive force cannot be obtained and unintended peeling tends to occur. If it exceeds 15 g / m ² , the adhesive strength becomes too strong to make it difficult to peel again, and glue will adhere to the coating roll at the time of coating, leading to operational and quality problems.

  After providing the pseudo adhesive by coating, it is desirable to smooth the coated surface. The smoothing process can be performed by a normal calendar process. Calendar processing can be performed with a coating machine and a series of calendars (on-machine calendar), or with a coating machine and a completely separate calendar (off-machine calendar). The type of is not particularly limited. Conventionally known calendars such as a calendar provided with a metal roll and an elastic roll, a calendar obtained by combining metal rolls, and the like can be used.

  Regarding the base paper for pseudo-adhesive paper according to the present invention (Examples 1 to 14) and the base paper for pseudo-adhesive paper (Comparative Examples 1 to 7) different from the present invention, concealability, peelability, occurrence of feathering, electronic The toner transferability in a photographic printer was tested and evaluated. The toner transferability of an electrophotographic printer was evaluated by an aptitude test because post-paste pseudo-adhesive paper is often printed using an electrophotographic method, unlike the front paste method. Moreover, about the peelability, the pseudo adhesive layer was provided and tested and evaluated.

In each example and each comparative example, 3 kg / pulpton of internal sizing agent (AKD) was blended with the raw material before paper making, and the basis weight was all adjusted to 104.7 g / m ² . In a size press apparatus, a size press solution containing 7% starch by dry weight and 3% cationic polymer by dry weight was applied to both sides at 1.5 g / m ² .

For the pseudo-adhesive layer in the peel test, 5 g / m ^{2 of} UV curable acrylic varnish for forming a pseudo-adhesive layer (manufactured by Kyoyo Chemical Co., Ltd .: plus size OP-5220) was applied to the base paper for pseudo-adhesive paper. It was formed by curing with ultraviolet irradiation.

  Filling and ratio of base paper used in each example and comparative example, ratio of mechanical pulp in base paper, blending of internal paper strength enhancer (using polyacrylamide water-soluble resin) in raw material before paper making The ratio and the cation strength of the used cationic polymer are shown in Table 1 below together with the test results.

The details of the test method and physical property measurement method are as follows. The test results are shown in Table 2.
[Whiteness] ISO whiteness was measured based on JIS P 8148.
[Opacity] The opacity was measured according to JIS P 8138.
[Internal bond strength] Measured based on the internal bond method defined in JAPAN TAPPI 18-2.
[Releasability] One sample (width 50 mm × length 100 mm) in a set of two sheets, and the pseudo adhesive layers of the roll gap 14 using a mail sealer (MS-900: manufactured by Dai Nippon Printing Co., Ltd.) After pressure setting and pseudo-adhesion and leaving for 5 minutes, a test for peeling from the end in the length direction was performed using a T-type peel tester under conditions of 500 mm / min. Ten sets of samples were prepared and tested for each example and each comparative example. Evaluation was based on the number of samples peeled in the base paper layer. The evaluation criteria are as follows: ○ when there was no sample from which the base paper layer was peeled, Δ when there were 1 to 2 sets of samples from which the base paper was peeled, and × when there were three or more sets of samples from which the base paper was peeled evaluated.
[Concealment] After printing 5 characters with black ink with an ink-jet printer (Pixus 850i: manufactured by Canon Inc.), it was tested whether the characters printed from the side opposite to the printed surface could be visually read. . In the evaluation, “◯” indicates that the characters could not be visually read, “Δ” indicates that the characters were partially read, and “x” indicates that all the characters could be read.
[Feathering] A 5 mm long thin line is printed with black ink on the pseudo-adhesive layer forming surface with an inkjet printer (Pixus 850i: manufactured by Canon Inc.). It was measured whether m ink smeared. The evaluation was ○ when the whisker-like blur having a length of 0.1 mm or less was only found, Δ when the whisker-like blur of 0.1 mm or more and 0.2 mm or less was confirmed, and exceeding 0.2 mm The thing where the beard-like blur was confirmed was set as x.
[Toner transferability] In the test, each example and each comparative example were cut into A4 size, a special black toner was set on a page printer (IPSiO NX6505: manufactured by RICOH), and a square of 2 mm in length and 2 mm in width was set. A total of 9 figures were printed in 3 rows and 3 rows. The intervals between the figures were 10 mm apart vertically and horizontally. After printing, each figure was visually observed to confirm that there were no white spots (generally referred to as white spots). In the evaluation, one in which no white spot having a diameter of 0.1 mm or more was confirmed in nine figures, and one or two figures in which nine white spots having a diameter of 0.1 mm or more were recognized. Δ, and those having three or more of the nine figures having a diameter of 0.1 mm or more recognized as “x”.

  As can be seen from Table 2, Examples 1 to 14 of the present invention were evaluated as “good” in all the test items of ink jet printer printing, printer printing in an electrophotographic system, hiding property, and peelability. On the other hand, about Comparative Examples 1-7, it was a result with evaluation of (triangle | delta) or x in each test. According to the above test examples, the base paper for pseudo-adhesive paper of the present invention has almost no feathering during ink jet recording, high concealment, excellent releasability, and excellent electrophotographic printer suitability. It was shown that

  The present invention can be used for a label having confidentiality, an information hiding paper, a confidential postcard, a confidential envelope, and the like.

Claims (5)

After printing / printing characters / graphics, form a pseudo-adhesive layer that can be peeled and pseudo-bonded when given conditions are applied to the printed / printed surface or non-printed surface under normal conditions. A pseudo-adhesive paper base paper for pseudo-adhesive paper,
5 to 40% by weight of mechanical pulp, a cationic polymer having a cationic strength of 0.3 meq / g or more, 5 to 40% by weight of inorganic filler,
And the base paper for pseudo | simulation adhesive paper characterized by the internal bond strength measured based on the internal bond method prescribed | regulated to JAPAN TAPPI 18-2 being 100-500 mJ. The mechanical pulp is a single pulp selected from the group of ground wood pulp, pulp ground under pressure, thermomechanical pulp, chemithermomechanical pulp, or a mixed pulp in which two or more kinds are mixed. The base paper for pseudo-adhesive paper according to claim 1. Pseudo-adhesive layer that, after printing / printing characters / graphics, pseudo-adhesively peels off when given conditions are applied on the printed / printed surface or non-printed / printed surface without bonding under normal conditions Is a method of manufacturing a base paper for pseudo-adhesive paper to form pseudo-adhesive paper,
Papermaking a raw material before papermaking containing 5 to 40% by weight of mechanical pulp, 0.1 to 5% by weight of a cationic polymer having a cationic strength of 0.3 meq / g or more, and 5 to 40% by weight of an inorganic filler,
A method for producing a base paper for pseudo-adhesive paper, characterized in that an internal bond strength measured based on an internal bond method defined in JAPAN TAPPI 18-2 is 100 to 500 mJ. Pseudo-adhesive layer that, after printing / printing characters / graphics, pseudo-adhesively peels off when given conditions are applied on the printed / printed surface or non-printed / printed surface without bonding under normal conditions Is a method of manufacturing a base paper for pseudo-adhesive paper to form pseudo-adhesive paper,
Coating containing 1 to 10% by weight of a cationic polymer having a cationic strength of 0.3 meq / g or more after papermaking a raw material before papermaking containing 5 to 40% by weight of mechanical pulp and 5 to 40% by weight of inorganic filler Apply the liquid,
A method for producing a base paper for pseudo-adhesive paper, wherein an internal bond strength measured based on an internal bond method defined in JAPAN TAPPI 18-2 is 100 to 500 mJ or more. The mechanical pulp is a single pulp selected from the group of ground wood pulp, pulp ground under pressure, thermomechanical pulp, chemithermomechanical pulp, or a mixed pulp in which two or more kinds are mixed. The manufacturing method of the base paper for pseudo | simulation adhesive paper of Claim 3 or 4.