JP2017217795A - Gravure cylinder for dry laminate, dry laminate method and laminate using the cylinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gravure cylinder for dry laminate capable of finishing appearance of a laminate laminated at high speed with a certain speed or higher to a uniform surface without stripe or orange peel like pattern, and rubbing, and the laminate obtained thereby.SOLUTION: There is provided a gravure cylinder for dry laminate formed with a honeycomb shape with line number of 70 to 270 lines/inch, line ratio of 8:1 to 12:1 and cell volume of 10 to 30 cm/m. There is provided the gravure cylinder for dry laminate according to the claim 1, which is formed with a honeycomb shape having cell depth of 10 to 200 μm. There is provided a gravure cylinder for dry laminate according to the claim 1 or 2, which is formed with a honeycomb shape having screen angle of 45 to 90 degrees.SELECTED DRAWING: None

Description

  The present invention relates to a gravure cylinder for dry lamination and a laminate obtained by lamination using the cylinder.

Conventionally, a dry lamination method has been used as a method for bonding various plastic films, a method for bonding a plastic film and a plastic film on which a metal is deposited, or a method for bonding a plastic film and a metal foil. In the dry laminating method, an adhesive diluted with a solvent such as an organic solvent or water is applied to a base material, and then the solvent is volatilized with a dryer and bonded to the other base material while applying heat and pressure. Is the method.

  As an adhesive used in the dry laminating method, for example, a two-component curable organic solvent type adhesive obtained by blending a polyisocyanate compound in a solution in which a resin containing a hydroxyl group such as a polyester resin or a polyurethane resin is dissolved in an organic solvent. Many agents are used.

  Various organic solvent-type adhesives are applied to the substrate with a gravure cylinder, but various organic solvent-type adhesives have different fluidity depending on performance and application, so if a gravure cylinder suitable for the adhesive is not used Surface roughness of the laminated body after lamination occurs, a uniform appearance cannot be obtained, and it is difficult to finish well. Therefore, when applying high-solid adhesives with low organic solvent content in response to environmental pollution, risk of fire explosion, and sanitary hindrance of work environment, engraving with an electronic engraving machine It has been proposed to select the stylus angle and the number of gravure lines of the gravure cylinder (see Patent Document 1).

  In recent years, laminates obtained by the dry laminating method tend to expand from the viewpoints of weight reduction and environmental friendliness. Therefore, it is desired to increase the processing speed in order to improve the production efficiency of dry laminate, and to reduce the coating amount from the cost reduction. However, in the dry laminating method using the conventional gravure method, by increasing the speed and reducing the coating amount, a stripe-like pattern can be formed on the surface of the laminated body after lamination, There was a problem that a uniform appearance could not be obtained and it was difficult to finish well.

JP 2010-155343 A

  An object of the present invention is to provide a dry laminate cylinder having a good appearance of a laminated body after lamination at a high processing speed at a certain level or higher, and a laminated body obtained thereby.

 As a result of various studies to solve the above-mentioned problems, the present inventors have determined that the cell shape of the gravure cylinder in which the iron core is chrome-plated when the adhesive is applied by a gravure method at a high processing speed that exceeds a certain level. It was found that the appearance of the laminated body after lamination was improved by selecting the cell volume and the number of gravure lines, and the present invention was completed.

The present invention relates to a gravure cylinder for dry lamination formed in a honeycomb shape having a number of lines of 70 to 270 lines / inch, a line ratio of 8: 1 to 12: 1, and a cell volume of 10 to 30 cm ³ / m ² .

  The present invention also relates to the above dry laminate gravure cylinder formed in a honeycomb shape having a cell depth of 10 to 200 μm.

  The present invention also relates to the above dry laminate gravure cylinder formed in a honeycomb shape having a screen angle of 45 to 90 degrees.

Further, the present invention provides a dry laminate method in which an adhesive diluted with a solvent is applied to a film in a gravure manner at a speed of 180 m / min or more, and then the solvent is volatilized to bond another film to obtain a laminate. In
The present invention relates to a dry laminating method, wherein the adhesive is applied using the gravure cylinder for dry laminating.

  Moreover, this invention relates to the laminated body laminated | stacked by the said dry laminating method.

  ADVANTAGE OF THE INVENTION According to this invention, the dry laminated cylinder which can finish the external appearance of the laminated body laminated | stacked at the time of more than a fixed speed | rate at the uniform surface without a streak and a yuzu skin-like pattern, and a rubbing, and a laminated body obtained by it Can be provided.

In the conventional dry laminating method, when applying adhesive, a good appearance was obtained without specifying the number and shape of the gravure plate as a cylinder, but the processing speed was increased for the purpose of improving productivity. In the case of coating and reducing the coating amount, a good appearance quality cannot be obtained for the laminated body after lamination unless an appropriate number of gravure cylinder lines and shape are selected. When the processing speed is increased, after the adhesive is applied to the film, the time for the adhesive to spread on the film is shortened, and it is laminated before the surface condition of the adhesive becomes uniform. Patterns and blurring occur, and good appearance quality cannot be obtained.
Even when the coating amount is lowered, the adhesive performance is deteriorated due to the coating amount or a rubbing pattern is generated on the coated surface, and good appearance quality cannot be obtained. A tunneling phenomenon may occur.
The dry lamination method of the present invention uses a honeycomb-shaped corrosion gravure cylinder, and by setting the number of gravure lines, cell volume, line ratio, cell depth, and screen angle to a specific range, the laminated body after lamination has a good appearance. Can be obtained.

The gravure cylinder used in the present invention is preferably formed into a honeycomb shape by corrosion.
As a method for forming a gravure cylinder, there are electronic engraving and ten-engraved methods in addition to the corrosion method. The cell formed by an electronic engraving machine or ten-engraving plate has a different shape from the corroded plate, the opening of the cell (concave portion) is narrow, and the so-called “bank” part between the cells becomes wide and the adhesive is applied and transferred. The adhesive spreads poorly on the film, which can cause poor appearance. Honeycomb gravure plates formed by corrosion can form wide openings in cells (recesses), and the so-called “bank” part between cells becomes narrow, and on the film after transfer of adhesive coating Adhesive wetting spreads better.

Conventionally, the cell shape of gravure cylinder in dry laminate is generally a square shape such as “compressed cell” “Eron gate cell” of electronic engraving plate, “grid cell” of ten-engraving plate, and “corrosion method” of the present invention The “gravure honeycomb shaped cell” has a shape close to a hexagon. When compared with one cell, the quadrangular cell has four corners of 90 degrees, whereas the honeycomb shape is hexagonal, so the corners are obtuse and 120 degrees.
In cell creation by corrosion, the shape tends to be rounded, and an obtuse angle is superior to an acute angle in terms of cell shape reproducibility. For this reason, the area of the intersection of the banks is smaller in the honeycomb-shaped cells than in the quadrangular cells. Accordingly, the honeycomb-shaped cell is advantageous for the transfer of the adhesive and the spreading of the wet.
In the cell formation by ten-time engraving, the cell is formed while stamping on the surface of the gravure cylinder with a mother die, so that metal burrs can be formed at the time of stamping and burrs can be formed on the bank of the cell.
Due to the effect of the burr, the surface roughness is rough compared to other plate making.
Although it is difficult to distinguish the difference due to the above plate making method numerically, it can be judged by checking the cell shape, cell bottom and bank portion with a microscope.

 The number of gravure lines of the gravure cylinder used in the method of the present invention is 70 to 270 lines / inch, preferably 135 to 270 lines / inch. If the number of gravure lines is less than 70 lines / inch, the bank is too thick, and a streak-like pattern is generated along the flow direction of the coating, and a good appearance quality cannot be obtained in the laminated body after lamination. On the other hand, if it exceeds 270 lines / inch, a sufficient coating amount cannot be ensured, resulting in poor adhesion performance or a rubbing pattern on the coated surface, and good appearance quality cannot be obtained.

The cell volume of gravure cylinder used in the methods of the present invention is 10 to 50 cm ³ / m ^2, preferably 10~30cm ³ / m ^2. If the cell capacity is less than 10 cm ³ / m ² , a sufficient amount of adhesive cannot be secured, resulting in poor adhesive performance or a rubbing pattern on the coated surface, and good appearance quality cannot be obtained. When it exceeds 50 cm < ³ > / m < ² >, a tunneling phenomenon may generate | occur | produce in the laminated body after a lamination by the influence of volatilization of the organic solvent to contain.

 Moreover, the line ratio (ratio of a cell opening part and a bank) of the gravure cylinder used with the method of this invention is 8: 1 to 12: 1. The line ratio is related to the aperture ratio of the cell and thus has a great influence on the transition and appearance. Preferably it is 9: 1 to 11: 1. When the line ratio is 7: 1, the bank portion becomes large, and it becomes difficult to make the surface uniform due to the wettability of the adhesive, and when the line ratio is 13: 1, the bank portion tends to break down due to continued use, and the amount of adhesive applied Control becomes difficult.

  In addition, the cell depth of the gravure cylinder used in the method of the present invention is 10 to 200 μm, and if it is less than that or more than that, reprinting by etching may be difficult.

Further, the screen angle of the gravure cylinder used in the method of the present invention is 45 to 90 degrees, and if it is less than that, it may easily cause moire or streaks during dry lamination, and good appearance quality may not be obtained. There is sex. A more preferable screen angle is 60 to 75 degrees. In the case of an adhesive, the viscosity at the time of application is generally higher than that of gravure ink, and the leveling is not good because of poor fluidity. Changing the screen angle has the effect of changing the coating fluidity of the adhesive, and is an effective means for improving leveling.
The screen angle refers to an angle with the vertical axis or horizontal axis of the cell for avoiding moire and coating unevenness. A general lattice plate is created at 45 degrees.

 The adhesive used in the dry laminating method of the present invention is not particularly limited as long as it has a nonvolatile content of 20% to 60% diluted with a solvent, and an organic solvent-type adhesive or an aqueous adhesive can be used. If the non-volatile content is less than 20%, the coating amount cannot be secured and the adhesion performance is poor. If it exceeds 60%, it becomes difficult to control the coating amount. In the present invention, unless otherwise specified,% represents% by weight and part represents part by weight.

 Examples of organic solvent adhesives include polyester resins, polyether resins, polyester ether resins, polyurethane resins, polyester urethane resins, polyether urethane resins, polyester ether resins, polyester ether urethane resins, and the like. What melt | dissolved resin which has an adhesive function with the organic solvent is mentioned. These adhesives may be used alone as a resin, but are generally used as a two-component curable adhesive in combination with a curing agent containing a polyisocyanate compound.

 Examples of the polyester-based resin include terephthalic acid, isophthalic acid, adipic acid, azelaic acid, dibasic acid such as sebacic acid, or dialkyl esters thereof or mixtures thereof, for example, ethylene glycol, propylene glycol, diethylene glycol, butylene glycol, Glycols such as neopentyl glycol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, 3,3'-dimethylol heptane, polyoxyethylene glycol, polyoxypropylene glycol, polytetramethylene ether glycol Alternatively, it is obtained by ring-opening polymerization of a polyester resin obtained by reacting with a mixture thereof or lactones such as polycaprolactone, polyvalerolactone, poly (β-methyl-γ-valerolactone). Polyester resin that can be used.

 As the polyether-based resin, for example, an oxirane compound such as ethylene oxide, propylene oxide, butylene oxide, and tetrahydrofuran is polymerized using, for example, water, ethylene glycol, propylene glycol, trimethylolpropane, glycerin, and the like as a low-part polyol. And polyether-based resins obtained.

 As the polyether ester resin, for example, obtained by reacting the above polyether resin with a dibasic acid such as terephthalic acid, isophthalic acid, adipic acid, azelaic acid, sebacic acid or the like, or a mixture thereof. And polyether ester resins.

 The polyurethane-based resin is a polyol having a urethane bond in one molecule, and is, for example, a polyether polyol, polyester polyol, polyether ester polyol (hereinafter referred to as organic polyol (1)) having a number average molecular weight of 200 to 20,000. ) And an organic polyisocyanate are reacted at an NCO / OH of less than 1, preferably 0.9 or less. As said organic polyol, what has a carboxyl group in the molecule | numerator (inside molecule | numerator and molecular terminal) (henceforth organic polyol (2)) can be used. The organic polyol (2) is desirably obtained by reacting the organic polyol (1) with a polybasic acid or an anhydride thereof. As the organic polyol (1) used in this case, those having two or more hydroxyl groups at the molecular ends and having a number average molecular weight of 1,000 to 100,000, preferably 3,000 to 15,000 are preferably used. Is done. If it is 1,000 or less, the cohesive force is insufficient, and if it is 100,000 or more, it is difficult to react a polybasic acid or its anhydride at the terminal for synthesis, and there is a possibility of significant thickening or gelation. Examples of the polybasic acid or anhydride thereof include aromatic polybasic acids such as phthalic acid, trimellitic acid, and pyromellitic acid, and anhydrides thereof. Phthalic anhydride that is an anhydride thereof, Trimellitic anhydride, pyromellitic anhydride and the like are particularly suitable. In addition, ethylene glycol bisanhydro trimellitate, glycerol tris anhydro trimellitate, ethylene glycol bis anhydro pyromellitate, glycerol tris anhydro pyromellitate, rosin component abietic acid derived from these anhydrides In addition, C10H16 diene compounds and derivatives obtained by adding maleic anhydride to a mixture thereof can be used. The synthesis of the organic polyol (2) is carried out by adding a polybasic acid or an anhydride thereof, preferably a polybasic acid anhydride under heating after the synthesis of the organic polyol (1). It is possible to obtain a product containing a carboxyl group from the polycarboxylic acid and the polyhydric alcohol in one step or inside the molecule. The reaction with these polybasic acid anhydrides has an accelerating effect to improve the adhesive performance of the adhesive composition, for example, hot water resistance, oil resistance, acid resistance and the like. The reaction between the organic polyol and the polybasic acid anhydride is controlled to a temperature of 200 ° C. or less, preferably in the range of 150 to 180 ° C. so that the esterification reaction by the ring opening reaction of the polybasic acid anhydride becomes the main reaction. There is a need to. The reaction ratio of both is made into the polybasic acid anhydride of the quantity which consumes 40 mol% or more of the hydroxyl groups in the molecule | numerator of an organic polyol. The “mole equivalent%” here is based on the number of hydroxyl groups in the molecule of the organic polyol. When the said numerical value is less than 40 molar equivalent%, the improvement of the acid resistance of the composition obtained is not enough. In addition, even when an aliphatic polyvalent carboxylic acid anhydride is used as the polybasic acid anhydride, a carboxyl group can be similarly introduced into the molecule, but in this case, the acid resistance is not improved, and the aliphatic polyvalent acid anhydride is not observed. The use of carboxylic acid anhydride is not preferred. Furthermore, when using polyester polyol or polyether ester polyol for the organic polyol (1), if only aromatic polyvalent carboxylic acid is used as the starting carboxylic acid, the physical properties of the organic polyol (1) are controlled. There are many problems in doing this. In particular, trivalent or tetravalent polycarboxylic acids produce branched organic polyols (1), which are easily gelled and cannot be used in large quantities. In addition, since aromatic polyvalent carboxylic acids have sublimation properties, when the organic polyol (1) is synthesized, these sublimates adhere to the reaction kettle or dehydrator, resulting in difficulty in production. In this regard, the use of an organic polyol having a carboxyl group in the molecule (organic polyol (2)) can avoid the above problems. Examples of the organic polyisocyanate include trimethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, 1,2-propylene diisocyanate, 1,2-butylene diisocyanate, 2,3-butylene diisocyanate, 1,3-butylene diisocyanate, 2, Aliphatic diisocyanates such as 4,4- or 2,2,4-trimethylhexamethylene diisocyanate, 2,6-diisocyanate methyl caproate, 1,4-cyclohexane diisocyanate, 1,3-cyclohexane diisocyanate, 3-isocyanate methyl- 3,5,5-trimethylcyclohexyl isocyanate, 4,4'-methylenebis (cyclohexyl isocyanate), methyl 2,4-cyclohexanediisocyanate Alicyclic diisocyanates such as methyl 2,6-cyclohexane diisocyanate, 1,4-bis (isocyanate methyl) cyclohexane, 1,3-bis (isocyanate methyl) cyclohexane, m-phenylene diisocyanate, p-phenylene diisocyanate, 4, 4'-diphenyl diisocyanate, 1,5-naphthalene diisocyanate, 4,4'-diphenylmethane diisocyanate, 2,4- or 2,6-tolylene diisocyanate or mixtures thereof, 4,4'-toluidine diisocyanate, dianisidine diisocyanate, 4 Aromatic diisocyanates such as 4,4'-diphenyl ether diisocyanate, 1,3- or 1,4-xylylene diisocyanate or mixtures thereof, ω, ω'-diisocyanate-1,4 Aromatic aliphatic diisocyanates such as diethylbenzene, 1,3- or 1,4-bis (1-isocyanate-1-methylethyl) benzene or mixtures thereof, triphenylmethane-4,4 ′, 4 ″ -triisocyanate, 1, Organic triisocyanates such as 3,5-triisocyanatebenzene and 2,4,6-triisocyanatetoluene, organic tetraisocyanates such as 4,4'-diphenyldimethylmethane-2,2'-5,5'-tetraisocyanate, etc. Polyisocyanate monomer, dimer, trimer, biuret, allophanate derived from the polyisocyanate monomer, 2,4,6-oxadiazinetrione ring obtained from carbon dioxide and the polyisocyanate monomer Polyisocyanates having, for example, ethylene glycol , Propylene glycol, butylene glycol, hexylene glycol, neopentyl glycol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, 3,3'-dimethylolpropane, cyclohexanedimethanol, diethylene glycol, tri Adducts with low molecular weight polyols having a molecular weight of less than 200 such as ethylene glycol, dipropylene glycol, glycerol, trimethylolpropane, pentaerythritol, sorbitol, or polyester polyols, polyether ester polyols, polyesteramides having a molecular weight of 200 to 20,000 Polyol, polycaprolactone polyol, polyvalerolactone polyol, acrylic polyol, polycarbonate polyol, polyhydroxyalkane, sunflower Examples include adducts such as coconut oil and polyurethane polyol.

  Examples of the polyisocyanate compound used as a curing agent for the organic solvent adhesive include the organic polyisocyanate.

 Examples of the aqueous adhesive include an aqueous polyurethane adhesive, an aqueous acrylic adhesive, an aqueous polyester adhesive, and an aqueous polyether adhesive.

 Aqueous polyurethane adhesives disperse or dissolve in water water a polyol compound containing no carboxyl group in the molecule, a polyol compound containing a carboxyl group in the molecule, and a polyisocyanate compound. There are self-emulsifying water-dispersible or water-soluble water-based urethane adhesives. Further, there is a water-dispersible polyurethane adhesive in which a polyurethane compound obtained by reacting a polyol compound not containing a carboxyl group in the molecule with a polyisocyanate compound is forcibly emulsified in water using surface activity. Polyol compounds that do not contain a carboxyl group in the molecule used in the aqueous urethane adhesive include, for example, polyester polyols, polyether polyols, polyether polyester polyols, polyurethane polyols, polyester amide polyols, acrylic polyols, polycarbonate polyols, and polyhydroxyalkanes. , Castor oil, or mixtures thereof. Examples of the carboxyl group-containing polyol include dimethylolpropionic acid and dimethylolbutanoic acid, and dimethylolbutanoic acid is particularly preferable. Examples of the polyisocyanate compound include tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, 1,6-hexamethylene diisocyanate, isophorone diisocyanate, 1,5-naphthalene diisocyanate, xylylene diisocyanate, and the like. 4,4'-diphenylmethane diisocyanate is particularly preferred.

 The aqueous acrylic adhesive is an aqueous acrylic adhesive obtained by emulsion polymerization of an acrylic monomer containing no carboxyl group and an acrylic acid monomer containing a carboxyl group.

The film used in the dry laminating method of the present invention is not particularly limited, and examples thereof include plastic films such as polyester, polyamide, polyethylene, and polypropylene, metal vapor deposited films such as aluminum, silicon oxide, and aluminum oxide, and metal foils such as aluminum foil. The combination includes the plastic films, a plastic film and a metal vapor-deposited film, a plastic film and a metal foil, and the like. The thickness of the film is also not particularly limited, and is usually 5 to 200 μm.
Even if the coating speed of the dry laminator used in the dry laminating method of the present invention is 180 m / min or more, a good coated product can be obtained.

In the dry laminating method of the present invention, the dry coating amount of the adhesive can be secured in the range of 1 to 8 g / m ^2, a stable laminate appearance can be secured even during high-speed processing, and a laminate having excellent adhesive performance can be obtained. In particular, it can be suitably used for food applications.

  Hereinafter, the present invention will be described in detail by way of examples. However, the following examples do not limit the present invention.

Example 1
Using a biaxially stretched polypropylene film (OPP; manufactured by Toyobo Co., Ltd., Pyrene Film OTP-2161) having a thickness of 20 μm as a base material, a gravure number of 120 lines / inch and a cell capacity of 23. Organic solvent type adhesive (Toyo Morton Co., Ltd.) with a dry laminator (Fuji Machine Industry Co., Ltd .: FL2 type) using a corrosive plate of 06 g / m ² , line ratio 10: 1, cell depth 32 μm, screen angle 75 ° Manufactured by Polyester Adhesive, TM-550) at a solid content of 40% by mass at a processing speed of 200 m / min, and the solvent was volatilized by a dryer (temperature 60 ° C., 70 ° C., 80 ° C., 80 ° C.). Thereafter, an unstretched polypropylene film (CPP; manufactured by Tosero Co., Ltd., GHC # 25) having a thickness of 25 μm is laminated at 50 ° C. with a nip roll, and a laminate. Obtained.

After cutting the obtained laminated body into a size of 10 cm × 10 cm, the weight of the laminated body: A (g) was measured with a precision balance. Thereafter, the laminate was peeled off, and the adhesive adhering to both peeled surfaces was completely wiped off with ethyl acetate. The film after wiping off the adhesive was dried at 80 ° C. for 5 minutes, and the weight (B) of both films peeled off by a precision balance was measured. The dry coating amount was calculated by the following formula, and found to be 2.9 g / m ² .

Dry coating amount (g / m ² ) = (A−B) /0.01
Moreover, when the external appearance of the obtained laminated body was visually observed, it was a uniform and favorable surface.

(Example 2)
As the honeycomb-shaped corrosion plate, the same as in Example 1 except that a corrosion plate having a gravure line number of 160 lines / inch, a cell capacity of 22.86 g / m ² , a line ratio of 8: 1, a cell depth of 49 μm, and a screen angle of 75 ° is used. A laminate was obtained by the method. The dry coating amount of the adhesive was 2.8 g / m ² . When the external appearance of the obtained laminated body was visually observed, it was a uniform and favorable surface.

(Example 3)
As the honeycomb-shaped corrosion plate, the same as in Example 1 except that a corrosion plate having a gravure number of 90 lines / inch, a cell capacity of 23.70 g / m ² , a line ratio of 11: 1, a cell depth of 17 μm, and a screen angle of 75 ° is used. A laminate was obtained by the method. The dry coating amount of the adhesive was 3.0 g / m ² . When the external appearance of the obtained laminated body was visually observed, it was a uniform and favorable surface.

Example 4
Coating with a processing speed of 130 m / min using a corrosive plate having a gravure number of 180 lines / inch, a cell capacity of 17.20 g / m ² , a line ratio of 9: 1, a cell depth of 18 μm, and a screen angle of 60 ° as a honeycomb-shaped corroded plate. A laminated body was obtained by the same method as in Example 1 except that. The dry coating amount of the adhesive was 2.1 g / m ² . When the external appearance of the obtained laminated body was visually observed, it was a uniform and favorable surface.

(Example 5)
Coating at a processing speed of 120 m / min using a corrosive plate having a gravure line number of 200 lines / inch, a cell capacity of 12.40 g / m ² , a line ratio of 9: 1, a cell depth of 12 μm, and a screen angle of 60 ° as a honeycomb-shaped corroded plate. A laminated body was obtained by the same method as in Example 1 except that. The dry coating amount of the adhesive was 1.5 g / m ² . When the external appearance of the obtained laminated body was visually observed, it was a uniform and favorable surface.

(Example 6)
Coating at a processing speed of 150 m / min using a corrosive plate having a gravure number of 70 lines / inch, a cell capacity of 49.10 g / m ² , a line ratio of 12: 1, a cell depth of 58 μm, and a screen angle of 60 ° as a honeycomb-shaped corroded plate. A laminated body was obtained by the same method as in Example 1 except that. The dry coating amount of the adhesive was 5.9 g / m ² . When the external appearance of the obtained laminated body was visually observed, it was a uniform and favorable surface.

(Comparative Example 1)
As the honeycomb-shaped corrosion plate, the same as in Example 1, except that a corrosion plate having a gravure wire number of 90 lines / inch, a cell capacity of 23.10 g / m ² , a line ratio of 7: 1, a cell depth of 41 μm, and a screen angle of 75 ° is used. A laminate was obtained by the method. The dry coating amount of the adhesive was 2.8 g / m ² . When the appearance of the obtained laminate was visually observed, a streak-like pattern was produced.

(Comparative Example 2)
The same as in Example 1 except that a gravure line number of 120 lines / inch, a cell capacity of 23.06 g / m ² , a line ratio of 10: 1, a cell depth of 32 μm, and a screen angle of 45 ° are used as the lattice-shaped corrosion plate. A laminate was obtained by the method. The dry coating amount of the adhesive was 2.9 g / m ² . When the appearance of the obtained laminate was visually observed, a streak-like pattern was produced.

(Comparative Example 3)
Other than using an electronic engraving plate having a gravure line number of 165 lines / inch, a cell capacity of 28.10 g / m ² , a line ratio of 10: 1, a cell depth of 55.5 μm, and a screen angle of 30 ° as a compressed electronic engraving plate A laminate was obtained in the same manner as in Example 1. The dry coating amount of the adhesive was 3.0 g / m ² . When the appearance of the obtained laminate was visually observed, a streak-like pattern was produced.

(Comparative Example 4)
Example of using an electronic engraving plate having a gravure line number of 137 lines / inch, a cell capacity of 25.98 g / m ² , a line ratio of 10: 1, a cell depth of 54.6 μm, and a screen angle of 60 ° as an elongate shape electronic engraving plate 1 was used to obtain a laminate. The dry coating amount of the adhesive was 2.9 g / m ² . When the appearance of the obtained laminate was visually observed, a streak-like pattern was produced.

(Comparative Example 5)
Example 1 is the same as Example 1 except that a gravure line number of 120 lines / inch, a cell capacity of 32.00 g / m ² , a line ratio of 10: 1, a cell depth of 85 μm, and a screen angle of 45 ° are used as the lattice-shaped ten-plate. A laminate was obtained in the same manner. The dry coating amount of the adhesive was 3.0 g / m ² . When the appearance of the obtained laminate was visually observed, a streak-like pattern was produced.
The results are shown in Table 1.

 From Table 1, Examples 1-6 were the surfaces where the external appearance of the laminated body after a lamination was uniform and was favorable. On the other hand, Comparative Examples 1 to 5 outside the scope of the present invention (Comparative Example 1 has a line ratio outside the range. Comparative Examples 2 to 4 have a cell shape that is not a honeycomb). A streaky pattern or rubbing occurred and a good surface could not be obtained.

Claims (6)

A gravure cylinder for dry lamination formed in a honeycomb shape having a number of lines of 70 to 270 lines / inch, a line ratio of 8: 1 to 12: 1, and a cell volume of 10 to 30 cm ³ / m ² .   The gravure cylinder for dry lamination according to claim 1, wherein the gravure cylinder has a cell depth of 10 to 200 μm.   The gravure cylinder for dry lamination according to claim 1 or 2, wherein the screen angle is formed in a honeycomb shape of 45 to 90 degrees. In a dry laminating method in which an adhesive diluted with a solvent is applied to a film in a gravure manner at a speed of 180 m / min or more, and then the solvent is volatilized to bond another film to obtain a laminate.
The dry-laminating method characterized by apply | coating the said adhesive agent using the gravure cylinder for dry-laminates in any one of Claims 1-3.   The dry laminating method according to claim 4, wherein the honeycomb shape of the gravure cylinder for dry laminating is formed by a corrosion method.   A laminate laminated by the dry laminating method according to claim 4 or 5.