WO2016136954A1 - Papier d'emballage - Google Patents

Papier d'emballage Download PDF

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Publication number
WO2016136954A1
WO2016136954A1 PCT/JP2016/055858 JP2016055858W WO2016136954A1 WO 2016136954 A1 WO2016136954 A1 WO 2016136954A1 JP 2016055858 W JP2016055858 W JP 2016055858W WO 2016136954 A1 WO2016136954 A1 WO 2016136954A1
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WO
WIPO (PCT)
Prior art keywords
pulp
paper
watermark
wrapping paper
present
Prior art date
Application number
PCT/JP2016/055858
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English (en)
Japanese (ja)
Inventor
幸恵 鈴木
Original Assignee
特種東海製紙株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 特種東海製紙株式会社 filed Critical 特種東海製紙株式会社
Priority to JP2017502515A priority Critical patent/JP6781691B2/ja
Priority to CN201680011852.8A priority patent/CN107407056A/zh
Publication of WO2016136954A1 publication Critical patent/WO2016136954A1/fr

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/02—Patterned paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • the present invention relates to a wrapping paper, and in particular, to a wrapping paper made of a pattern paper with a white watermark.
  • Patterned paper with a watermark is widely used in fields such as packaging, decoration, and printing according to the appearance characteristics.
  • These watermark patterns are usually formed by partially changing the basis weight of pulp in the wet paper forming stage (wire part) in the paper making process.
  • wire part when a papermaking net with a convex pattern is used, the part corresponding to the convex pattern part in the wet paper is thinned as compared to the peripheral part, and the part is The portion becomes a white watermark in the paper obtained by drying the wet paper.
  • the outer surface of a pressing means such as a press roll having a convex pattern on the outer surface of a wet paper (wet paper having a uniform pulp basis weight) formed of a wire part.
  • a method in which a pattern is transferred to a wet paper by pressing and shaped is also known.
  • Patent Document 1 discloses an anti-counterfeit paper with a white watermark.
  • This anti-counterfeit paper with white watermark is obtained by subjecting paper obtained by mixing natural pulp and polyolefin fiber to hot-press processing by off-machine processing after paper making. It is formed by softening and melting polyolefin fibers by hot pressing.
  • the present invention relates to a wrapping paper in which a contrast is generated between a watermark portion and a non-watermark portion when it is held over light, the watermark portion looks clean and excellent in design, and also in cushioning properties.
  • the present invention is a wrapping paper obtained by mixing paper making of natural pulp and olefin-based synthetic pulp, and has a watermark portion having a high light transmittance as compared with the peripheral portion, and the watermark portion has pulp. It is a wrapping paper that is not or has less pulp than the periphery.
  • the present invention is a method for producing the packaging paper of the present invention, comprising: forming a wet paper by making both pulps from the dispersion of the natural pulp and the synthetic pulp, and then drying the wet paper. It is a method for producing a wrapping paper in which pulp is not present in the wet paper before being dried, or a portion having less pulp as compared with the peripheral portion is formed.
  • the “part where pulp is not present or the pulp is less than the peripheral part” in the wet paper is the formation of the watermark in the wet paper forming step. Preferably, it is formed by intentionally inhibiting pulp accumulation in the part.
  • a wrapping paper in which a contrast is produced between a watermark portion and a non-watermark portion when it is held over light, the watermark portion looks clean and excellent in design properties and cushioning properties.
  • FIG. 1A is a photograph of the packaging paper of Example 1
  • FIG. 1B is a photograph of the packaging paper of Comparative Example 1.
  • the wrapping paper of the present invention is obtained by mixing paper making of natural pulp and olefin synthetic pulp.
  • wood bleached chemical pulp such as softwood bleached kraft pulp (NBKP), hardwood bleached kraft pulp (LBKP), softwood bleached sulfite pulp (NBSP), etc. is used as natural pulp.
  • Mechanical pulp such as (GP), thermomechanical pulp (TMP), chemical thermomechanical pulp (BCTMP); non-wood pulp such as hemp, bamboo, straw, kenaf, sanaf, straw, cotton etc .; waste paper pulp is used.
  • 1 type of these natural pulp can be used individually or in combination of 2 or more types.
  • the Canadian standard freeness according to JIS P8121 of natural pulp used in the present invention is preferably 100 to 500 ml, more preferably 250 to 400 ml.
  • Freeness is a value that indicates the degree of pulp beating (a process in which pulp is beaten mechanically and ground in the presence of water). The smaller the freeness value, the stronger the degree of beating, and the fiber from beating The damage of this is great and fibrillation is progressing.
  • the freeness of natural pulp is within the above range, the balance of various properties such as low basis weight of packaging paper and improved liquid permeability is improved.
  • the adjustment of the freeness that is, the adjustment of the degree of beating of the pulp can be performed by appropriately adjusting the type of beating apparatus and the processing conditions (pulp concentration, temperature, pressure, rotation speed, blade shape, number of times of processing, etc.).
  • the beating device known materials can be used.
  • beating machines such as beaters, PFI mills, single disc refiners, double disc refiners, dispersion of pigments, ball mills, dyno mills, etc. used for grinding
  • a machine can also be used.
  • Examples of the olefin resin constituting the olefin synthetic pulp used in the present invention include polyethylene and polypropylene.
  • the olefin synthetic pulp used in the present invention is preferably fibrillated as in the case of natural pulp from the viewpoint of securing a practically sufficient paper strength.
  • the fibrillation of the olefin-based synthetic pulp can be performed by the same method as the fibrillation of the natural pulp.
  • the freeness of the olefin synthetic pulp used in the present invention is preferably 100 to 700 ml, more preferably 300 to 600 ml.
  • SWP registered trademark
  • Mitsui Chemicals, Inc. is a fibrillated olefin-based synthetic pulp.
  • the fiber length of the olefin synthetic pulp used in the present invention is preferably 0.1 to 2.0 mm, more preferably 0.5 to 1.5 mm.
  • the fiber length of the olefin synthetic pulp is within such a range, water breakage is improved in the wire part in the paper making process when the wrapping paper is produced by the wet paper making method, and the watermark part is easily formed.
  • paper strength enhancer or fixing agent such as starch, polyacrylamide, polyamine polyamide epichlorohydrin, sizing agent, filler,
  • paper strength enhancer or fixing agent such as starch, polyacrylamide, polyamine polyamide epichlorohydrin, sizing agent, filler,
  • additives commonly used in wet papermaking methods such as drainage yield improver, water resistance improver, fixing agent, antifoaming agent and slime control agent may be contained.
  • the wrapping paper of the present invention has a watermark portion that has a higher light transmittance than the peripheral portion.
  • the watermark portion according to the present invention is a portion where there is no pulp or there is less pulp compared to the peripheral portion (non-watermark portion), in other words, a through-hole or a peripheral portion that penetrates the wrapping paper in the thickness direction.
  • This is a low pulp accumulation portion where the amount of accumulated pulp is small compared to the portion (non-watermark portion), and is a so-called white watermark that appears brighter than the peripheral portion when viewed with transmitted light.
  • the shape, size, number, formation pattern, and the like of the watermark portion in plan view are not particularly limited, and may be appropriately adjusted according to the application.
  • An example of the wrapping paper of the present invention is one in which a plurality of watermark portions are formed in a predetermined pattern and each watermark portion is surrounded by a non-watermark portion.
  • the watermark portion may be only a through hole, or may be only a low pulp accumulation portion, and may include both.
  • a through hole that penetrates the wrapping paper in the thickness direction, and surrounds the through hole. And the thing comprised including the low pulp accumulation
  • the non-watermark part which is the peripheral part of the watermark part, is a high pulp accumulation part in which the amount of accumulated pulp is larger than that of the watermark part, and is a part that does not transmit light or has a light transmittance lower than that of the watermark part.
  • olefin-based synthetic pulp has an effect of improving the opacity of the paper and making the white watermark look fine.
  • olefin-based synthetic pulp has a shorter fiber length and better drainage than natural pulp.
  • wrapping paper is produced by a wet papermaking method.
  • wire part in the paper making process at the time of manufacturing since it becomes easy to form a through hole and a low pulp accumulation part in a wet paper, there also exists an advantage that formation of a watermark part becomes easy.
  • the wrapping paper of the present invention has been made based on these findings.
  • the opacity (opacity of the portion other than the watermark portion (non-watermark portion)) defined in JIS P8149 of the packaging paper of the present invention is preferably 35 to 80%, more preferably 40 to 65%.
  • the opacity of the wrapping paper can be adjusted by appropriately adjusting the type and content of the olefin synthetic pulp.
  • the wrapping paper of the present invention containing natural pulp and olefin-based synthetic pulp has the features of low density and high cushioning properties compared to ordinary paper containing natural pulp and not containing olefin-based synthetic pulp. Therefore, it is suitable for the packaging use of articles utilizing its cushioning properties.
  • the density of the wrapping paper of the present invention is preferably 0.2 to 0.6 g / cm 3 , more preferably 0.3 to 0.5 g / cm 3 .
  • the wrapping paper of the present invention is produced by the method 1) or 2) described later (a method of forming a through hole or a low pulp accumulation portion in the wet paper before drying), that is, “pulp” in the wet paper
  • the part where there is no pulp or where there is less pulp compared to the peripheral part "(the part that becomes the watermark after drying the wet paper) is intended to deposit the pulp in the part where the watermark will be formed in the wet paper forming process
  • the density of the watermark portion in the wrapping paper thus obtained is the same as or lower than that of the surrounding non-watermark portion.
  • the watermark portion (white watermark) in the paper described in Patent Document 1 is formed by softening and melting the polyolefin fiber by hot-pressure treatment in the off-machine processing after paper making. It is assumed that the density is high.
  • the paper described in Patent Document 1 is obtained by subjecting a part of paper with a uniform basis weight of pulp to a hot pressure treatment to form a watermark portion.
  • the amount of pulp is not substantially changed between the portion and the surrounding non-watermark portion that has not been subjected to the heat and pressure treatment.
  • the watermark portion according to the present invention is a portion where pulp is not present or is less pulp than the peripheral portion (non-watermark portion), and is formed by hot-pressing of dried paper.
  • the watermark portion thus made differs not only in density but also in the amount of pulp.
  • Such a watermark portion with a relatively small amount of pulp cannot be formed by hot-pressing the paper.
  • pulp is deposited on the portion where the watermark portion is to be formed in the wet paper forming process. It is formed by intentionally inhibiting.
  • the watermark formed by hot-pressure treatment usually depends on the conditions of hot-pressure treatment, but the olefin-based synthetic pulp is usually melt-softened by hot-pressure treatment, so that the fiber form is maintained.
  • the inter-fiber gap is less than that of the surrounding non-watermark portion that has not been subjected to the heat and pressure treatment. In some cases, the inter-fiber gap disappears almost completely, and a film-like film-like form can be taken.
  • the watermark portion according to the present invention that has not undergone the heat-pressure treatment maintains the fiber form, and the form as the fiber aggregate is substantially different from the non-watermark portion in the peripheral portion.
  • the cushioning property of the wrapping paper can be evaluated by the compressive strength of the wrapping paper.
  • the compressive strength of the wrapping paper of the present invention is preferably 0.2 to 0.9, more preferably 0.4 to 0.6.
  • the compressive strength (cushioning property) of the wrapping paper can be adjusted by appropriately adjusting the type and content of the olefin synthetic pulp.
  • the paper (packaging paper) obtained by drying the wet paper ) Is preferably not pressed.
  • the compression hardness measurement method using a KES compression tester is a method of measuring stress when a measurement object (wrapping paper) is compressed on a circular plane (2 cm 2 ), and the compression hardness is the linearity of compression. As the numerical value approaches 1, the measurement object is harder.
  • the KES compression tester used for the measurement includes a metal pressurizer having a contact area of 2 cm 2 with the object to be measured.
  • a KES compression tester having such a configuration for example, a disk-shaped metal A trade name “KES-G5” manufactured by Kato Tech Co., Ltd., which is equipped with a pressurizer, can be mentioned.
  • the measurement object (packaging paper) is fixed on the sample mounting table of the KES compression tester, and the pressurizer is pushed in from the upper side of the measurement object at a predetermined pressure in the thickness direction of the measurement object. Measure the maximum value of stress.
  • the pressing speed of the pressurizer is 0.0067 to 0.02 mm / second, and the pressing pressure is 50 to 500 gf / cm 2 .
  • the measurement of the maximum stress is carried out at three arbitrary points per 100 cm 2 area in the measurement object, and the average value of the plurality of measurement values obtained in this way is used as the compression hardness of the measurement object, and The compression strength of the measurement object is calculated.
  • Compressive strength 1-compression hardness
  • the compressive strength of the wrapping paper can vary depending on the shape, size, number, etc. of the watermark portion in the wrapping paper in plan view.
  • a low-basis weight packaging paper having a basis weight of 30 g / m 2 or less has a small absolute amount of pulp that has a positive effect on cushioning properties and paper strength. The effects on such things are not negligible.
  • the watermark portion according to the present invention is a portion where there is no pulp or there is less pulp as compared with the peripheral portion (non-watermark portion). In order to satisfy, it is preferable that such relatively low pulp portions exist discretely or scatteredly on the entire wrapping paper, rather than locally on the wrapping paper.
  • the pattern of the watermark portion is not particularly limited.
  • a watermark having a “shape not surrounded by the non-watermark portion” such as a linear shape extending from one end of the wrapping paper to the other end.
  • a plurality of watermarks are scattered all over the wrapping paper and each watermark is a non-watermark”
  • a pattern surrounded by a portion, that is, a closed shape is preferable.
  • the wrapping paper of each embodiment to be described later embodies such a preferable watermark pattern.
  • each watermark portion is not particularly limited, and can be arbitrarily selected from a circular shape, an elliptical shape, a triangular shape, a polygonal shape of quadrilateral or more, a linear shape such as a straight line or a curve, and the planar view shape is different. Two or more kinds may be combined.
  • the area of one watermark in the packaging paper is preferably 1.5 cm 2 or less, more preferably 0.01 to 1.0 cm 2 . .
  • the number of watermark portions per 100 cm 2 of the wrapping paper is preferably 5 or more, more preferably 10 to 600. It is.
  • the distance between the centers of adjacent watermark portions (pitch of the watermark portion) is preferably 1 to 50 mm, more preferably 3 to 30 mm.
  • the content of the olefin-based synthetic pulp in the packaging paper of the present invention is based on 100 parts by mass of natural pulp in the packaging paper.
  • the amount is preferably 1 to 70 parts by mass, more preferably 5 to 40 parts by mass. If the content of the olefinic synthetic pulp with respect to the natural pulp is too small, the above-mentioned effect of the olefinic synthetic pulp may not be sufficiently obtained. If the content of the olefinic synthetic pulp with respect to the natural pulp is too large, the sheet The strength is weak, and there is a possibility that the strength required for wrapping paper cannot be obtained.
  • the wrapping paper of the present invention is manufactured by a known wet papermaking method. Specifically, the wet paper is formed by forming both pulps from a dispersion of natural pulp and synthetic pulp using a papermaking net, and then forming the wet paper. It is manufactured through a process of drying.
  • the watermark part i.e., the low pulp accumulation part with less pulp accumulation compared to the through-hole or peripheral part that penetrates the wrapping paper in the thickness direction, is uneven on the outer surface of the paper obtained by drying the wet paper
  • It can also be formed by a method (dry embossing method) in which the concavo-convex pattern is transferred and shaped on the paper by pressing and shaping on the outer surface of the roll on which the pattern is applied.
  • the wet paper before drying has no pulp or a portion with less pulp compared to the peripheral portion (through hole or low pulp accumulation portion). Is preferably formed.
  • the through-hole or low pulp accumulation part formed in the wet paper becomes a watermark part (white watermark) in paper (packaging paper) obtained by drying the wet paper.
  • a method for forming a through hole or a low pulp accumulation portion in a wet paper a method for suppressing a reduction in cushioning improvement effect by an olefin-based synthetic pulp
  • a through hole or a low pulp accumulation portion in packaging paper
  • a paper net with a concave and convex part corresponding to the watermark part), or a paper net with a mesh closed with a resin in accordance with a through hole or a low pulp accumulation part for example, 1) a through hole or a low pulp accumulation portion (in packaging paper) A paper net with a concave and convex part corresponding to the watermark part), or a paper net with a mesh closed with a resin in accordance with a through hole or a low pulp accumulation part.
  • the cushioning property of the pressed portion of the wrapping paper obtained by drying the wet paper may be reduced due to partial pressing of the wet paper.
  • the pressure linear pressure of the pressing means such as a press roll
  • the method of 1) above that is, a method of partially inhibiting or restricting the pulp accumulation at the time of wet paper formation and forming a wet paper in which a through hole or a low pulp accumulation portion is formed in advance, Since there is no fear of a decrease in cushioning properties, it is preferably used in the present invention.
  • the basis weight of the wrapping paper of the present invention is not particularly limited.
  • the wrapping paper of the present invention has the following features: Since the contrast with the non-watermark part is clear and the watermark part looks beautiful, a relatively low basis weight is preferable from the viewpoint of fully utilizing this characteristic, and specifically, preferably 30 g. / M 2 or less, more preferably 10 to 25 g / m 2 .
  • the wrapping paper of the present invention can be colored in any color, may have a single layer structure, or may have a multilayer structure in which a plurality of layers are laminated. In the case of a multilayer structure, it is preferable that the layers are integrated by papermaking. In the case of a multilayer structure, a watermark portion can be formed on all or a part of a plurality of layers, and a watermark portion in one layer and a watermark portion in another layer may overlap in plan view.
  • NBKP was used as natural pulp. NBKP is beaten with a double disc refiner until the Canadian standard freeness reaches 400 ml, and olefin synthetic pulp (SWP (registered trademark), brand name “E620” manufactured by Mitsui Chemicals, Inc.) is 40 masses with respect to 100 mass parts of NBKP.
  • SWP registered trademark
  • E620 brand name “E620” manufactured by Mitsui Chemicals, Inc.
  • a stock was prepared by adding a part. Using this stock, a non-colored packaging paper having a basis weight of 17 g / m 2 was obtained by a circular paper machine according to the method of 1) above. As shown in FIG. 1A, the obtained wrapping paper was formed with a lot of watermarks in which no pulp was present or there were few pulps compared to the peripheral part.
  • Example 2 A single-layer structure and a non-colored packaging paper having a basis weight of 17 g / m 2 were obtained in the same manner as in Example 1 except that 5 parts by mass of olefin synthetic pulp was added to 100 parts by mass of NBKP.
  • Example 3 A single-layer structure and a non-colored packaging paper having a basis weight of 17 g / m 2 were obtained in the same manner as in Example 1 except that 10 parts by mass of olefin-based synthetic pulp was added to 100 parts by mass of NBKP.
  • Example 4 A single-layer structure and a non-colored packaging paper having a basis weight of 17 g / m 2 were obtained in the same manner as in Example 1 except that 20 parts by mass of olefin synthetic pulp was added to 100 parts by mass of NBKP.
  • Example 5 A single-layer structure and uncolored packaging paper was obtained in the same manner as in Example 1 except that the basis weight was 30 g / m 2 .
  • Example 1 A non-colored packaging paper having a single-layer structure with a basis weight of 17 g / m 2 was obtained in the same manner as in Example 1 except that olefin-based synthetic pulp was not used.
  • Example 2 Except that the watermark portion was formed by a method according to Patent Document 1, that is, a method in which a paper obtained by drying a wet paper was subjected to a heat and pressure treatment in a predetermined pattern, the same as in Example 1, A single-layer structure and an uncolored packaging paper having a basis weight of 17 g / m 2 was obtained. More specifically, a paper having a uniform basis weight is manufactured by a circular paper machine using the same paper material as in Example 1, and the same pattern as the watermark in Example 1 is used for this paper. A watermark was formed by applying a hot pressure treatment at a heating temperature of 140 ° C. for a heating time of 4 seconds.
  • the watermark part formed by the hot-pressure treatment has a substantial difference in the amount of pulp compared to the surrounding non-watermark part due to the melting and softening of the olefin synthetic pulp present in the hot-pressure treatment. Although not, the density is high and the fiber morphology is not maintained.
  • the wrapping paper of each example is compared to the wrapping paper of Comparative Example 1 that does not contain olefinic synthetic pulp due to the fact that it contains olefinic synthetic pulp in addition to natural pulp.
  • the opacity of the non-watermark part is high, and the compression strength, that is, the cushioning property is high.
  • the opacity of the non-watermark part is high, the contrast between the watermark part and the non-watermark part becomes clear when the wrapping paper is held over light, so that there is a visual effect that the watermark part is lifted. As a result, the watermark portion looks beautiful and the design is improved.
  • the wrapping paper of Example 1 see FIG.
  • Comparative Example 2 is different from Example 1 in that the watermark part is formed by heat pressure processing.
  • the watermark part and the surrounding non-watermark part are caused by the difference in the manufacturing method.
  • the amount of pulp is substantially the same in (non-hot pressure treatment part), and in this respect, there is no pulp in the watermark part or there is less pulp compared to the peripheral part, and the configuration of Example 1 Is different.
  • the fiber form is not maintained because the watermark part has undergone the heat pressure treatment, and in this respect, the fiber form of the watermark part is maintained and is substantially the same as the fiber form of the non-watermark part.
  • the configuration is different from that of the first embodiment.
  • Example 1 and the comparative example 2 have the same pattern of a watermark part, a significant difference is seen in compression strength as shown in Table 1, and the direction of Example 1 is more excellent in cushioning properties. As a result. From the above, in order to obtain a wrapping paper with a high cushioning property, it is preferable that there is no pulp in the watermark portion or there is less pulp compared to the peripheral portion (non-watermark portion), or It can be seen that the fiber form is preferably maintained in the watermark portion.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Buffer Packaging (AREA)
  • Wrappers (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un papier d'emballage dans lequel, lorsque le papier d'emballage est tenu en pleine lumière, un contraste entre une partie filigranée et une partie non filigranée est visible et la partie filigranée a une belle apparence, de manière à obtenir un excellent effet de conception et qui présente également d'excellentes propriétés d'amortissement. La solution selon l'invention porte sur un papier d'emballage qui est obtenu en soumettant une pâte à papier naturelle et une pâte à papier synthétique à base d'oléfine à une fabrication de papier mixte et qui comporte une partie filigranée, ladite partie filigranée ayant une transmittance à la lumière supérieure à une partie environnante associée et ne contenant pas ou contenant moins de pâte à papier que la partie environnante. Le grammage du papier d'emballage selon la présente invention est de préférence inférieur ou égal à 30 g/m2. Le papier d'emballage selon la présente invention est fabriqué par une étape consistant à soumettre une dispersion de la pâte à papier naturelle et de la pâte à papier synthétique à une fabrication de papier, ce qui permet de produire une bande de papier humide, puis à sécher la bande de papier humide. Dans la bande de papier humide avant séchage, une partie, qui ne contient pas ou qui contient moins de pâte à papier qu'une partie environnante associée, est formée.
PCT/JP2016/055858 2015-02-27 2016-02-26 Papier d'emballage WO2016136954A1 (fr)

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CN201680011852.8A CN107407056A (zh) 2015-02-27 2016-02-26 包装用纸

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JPS49110905A (fr) * 1973-03-01 1974-10-22
JPH06287883A (ja) * 1992-05-08 1994-10-11 Tokushu Seishi Kk 透き入れ用模様網及びそれを使用して製造した透き入れ紙
JP2005041012A (ja) * 2003-07-23 2005-02-17 Mitsui Chemicals Inc インモールドラベル用フィルムおよびそれを用いた容器

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