JPH027822B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for laminating a plastic film on the surface of printing paper or the like by a simple means without using ordinary adhesives, organic solvents, etc.

<Prior art> As is well known, printing paper such as folding cartons, publications, cards, posters, and other paper products (hereinafter referred to as "printed materials, etc.") requires protection of the printed surface, water resistance,
Many products have plastic film laminated on their surfaces for the purpose of imparting oil resistance, gloss, and beautification, and this process is known in the industry as "print lamination" or "print lamination."
It is called.

Conventionally, such print lamination involves applying an adhesive dissolved in an organic solvent to a plastic film in the coating section of a laminating machine, scattering the organic solvent through a drying process, and then bonding the adhesive-coated surface of the plastic film with printing paper, etc. It is made by thermocompression bonding. However, the methods using organic solvents have problems in terms of work safety such as the risk of fire, health management of workers, and environmental protection such as the generation of odors and air pollution. However, there has been a strong demand for a laminating method that does not require the use of organic solvents. In addition, in the conventional method of glazing, when laminating with heat and pressure between a mirror-finished heated metal roll and a pressure roll, the adhesive is softened by heat, and as a result, the heated metal roll smoothes the surface of the plastic film, creating a glossy finish. This takes advantage of the fact that the color becomes like this, and naturally the higher the temperature, the better the gloss. However, with the conventional method, it is impossible to completely remove the organic solvent contained in the adhesive applied to the plastic film, and there is some residual solvent, which foams due to heat during thermocompression bonding. On the other hand, in order to suppress foaming as much as possible, it is necessary to heat and press the product at a low temperature, but this will result in a lack of gloss, so it is difficult to satisfy both of no foaming and gloss. It was hot. That is, in the past, we had to settle for an unsatisfactory product with some foaming and some lack of gloss, which was a serious drawback in terms of product quality.

In view of this technical background, the present inventors developed a new print laminating method and first filed a patent application in 1983.
The application was filed as No. 208760 (Japanese Unexamined Patent Publication No. 59-24669), but the gist of the application is that ``the heat-sensitive adhesive resin layer of a composite polypropylene film on which a heat-sensitive adhesive resin layer is laminated is brought together with the printed surface of printing paper, etc. This method solves the conventional problem of foaming during thermocompression bonding, but further study is required in terms of gloss. Ta. In other words, instantaneous thermocompression bonding is inevitably insufficient for achieving gloss, and although it is theoretically possible to apply gloss using a press, it complicates the process and reduces efficiency. This could not be put to practical use, so we investigated a new method that would allow the glazing to be carried out continuously with the thermocompression bonding process, and filed an application as Japanese Patent Application No. 59-41191 (Japanese Unexamined Patent Publication No. 60-184826). One of the methods is ``When laminating a print lamination film consisting of at least two layers, a base film layer and a heat-sensitive adhesive resin layer, with printing paper, etc., it is necessary to A device is used in which an endless metallic belt with a mirror-finished surface is stretched around the outer periphery of a heating metal roll and an auxiliary roll, and a pressure roll is provided opposite the heating metal roll via the endless metal belt. , between the metal endless belt and the pressure roll, the base film layer is placed on the metal endless belt side, and the printing paper, etc. is placed on the pressure roll side, and the print lamination film and the printing paper, etc. are fed. Send and heat-press laminate.
A method for obtaining a polished printed laminated product by subsequently transporting the laminated product in close contact with the endless metal belt, and this method has almost solved the conventional problems. .

<Problems to be Solved by the Invention> However, in the above method, a metal endless belt is located between a heating metal roll and a pressure roll that face each other, and a base is placed between the metal endless belt and the pressure roll. Since the material film layer is placed on the belt side and the printing paper etc. is placed on the pressure roll side, the contact between the endless belt and the film surface is inevitably weak.
There was a problem that a better polish could not be obtained.

<Means for Solving the Problems> (Means) The present invention provides a print lamination film 1 comprising at least two layers, a base film layer 2 and a heat-sensitive adhesive resin layer 3, as shown in FIGS. 1 and 7. When laminating the printing paper, etc. 4, the film 1 is placed on the heating roll 7 side, and the printing paper, etc. 4 is placed on the pressing roll 8 side, between the heating roll 7 and the pressure roll 8, which are arranged facing each other. Laminated body 6' by thermocompression bonding
and then the heating roll 7 and the heating roll 7
The thermocompression bonded laminate body 6' is run between endless circulation members 10 provided in surface contact with each other, and the film surface 1 is polished.

(Means) As shown in FIG. 6, a heating roll 17 and a pressure roll 18 are arranged opposite to each other in the means (), and a heating metal roll 19 is provided separately from the heating roll 17. An endless circulation member 10 is provided in surface contact with each other, and the thermocompression bonded laminate 6' is run between the roll 19 and the endless circulation member 10, and the film surface 1 is also polished. Also, FIG. 8 differs from FIG. 6 in that the laminate body 6' is run so that the printing paper side 4 is in contact with the heating metal roll 19.

<Function> In FIGS. 1 and 7, printing paper, etc. 4 (sheets) are fed one by one from a paper feed unit (not shown) with the printed side facing up, as shown in FIGS. 2 and 3. The opposing ends are sequentially overlapped and supplied toward the crimp section 11 . On the other hand, the print lamination film 1 is supplied toward the pressure bonding section 11 so that its heat-sensitive adhesive resin layer 3 is included in the printed surface of the sheet 4. When both of them reach the pressure bonding part 11, they are thermocompression bonded between the heating roll 7 and the pressure bonding roll 8 to form a laminate body 6', but this laminate body 6' continues to run in surface contact with the heating roll 7, and this surface By pressurizing the sheets 4 of the laminate 6' with the endless circulating member 10 disposed in surface contact with the heating roll 7 during contact running, each component of the laminate 6' is more strongly integrated and the film is Polish the surface.

6 and 8 are the same as in FIGS. 1 and 7, and it is the heating metal roll 19 that is in surface contact with the endless circulation member 10, and this roll 19 is different from the heating roll 7 in the former. The two-stage heating of the heating roll 7 and the heating metal roll 19 allows the laminate body 6' to be strongly integrated and polished more smoothly.

<Example> The present invention will be explained in detail below.

The print lamination film 1 according to the present invention is as follows:
A laminated film having at least two layers, a base film layer 2 and a heat-sensitive adhesive resin layer 3,
The base film layer 2 is made of polyolefin such as polypropylene, polyester, polyamide, or other thermoplastic polymer, and is a stretched or unstretched film having a higher melting point than the polymer forming the heat-sensitive adhesive resin layer 3. A preferred example is a biaxially stretched polypropylene film. In this case, the biaxially oriented polypropylene film mentioned above is a polypropylene homopolymer with a boiling n-hbutane extraction residue of 90% or more, a propylene-α with an α-olefin content of 5 mol% or less
- an olefin copolymer, or a mixture of a propylene homopolymer and a propylene-α-olefin copolymer blended such that the total propylene content is 95 mol% or more,
Furthermore, it is also preferable to use the above-mentioned polypropylene resin mixed with film waste generated during the production of the film according to the present invention. There is no particular limit to the thickness of the base film layer 2, but a thickness of about 10 to 20 μm is usually preferred. Products to which a bulking agent, stabilizer, ultraviolet absorber, antistatic agent, etc. are added may also be used as required.

Further, the heat-sensitive adhesive resin layer 3 laminated on the base film layer 2 is not particularly limited as long as it is a solvent-free type with a melting point lower than that of the base film.
Preferably an ethylene-based polymer, such as polyethylene or ethylene at least 70%
Examples include a copolymer containing 70% by weight or a mixture of polymers having a total ethylene content of 70% by weight or more. There is no particular restriction on the monomer to be copolymerized with ethylene at this time, and any monomer that can be copolymerized with ethylene may be used. Examples of such monomers include propylene, 1-butene, 1-hexene, vinyl acetate, ethyl acrylate, and acrylic acid. Furthermore, those modified by copolymerization followed by hydrolysis or crosslinking with metal ions, and those modified by graft polymerization with maleic anhydride or the like can also be used. However, the total ethylene content
If it is less than 70% by weight, it is difficult to return the film waste generated in the film manufacturing process or the slitting process to the base film layer, for example, the above-mentioned polypropylene layer, and reuse it, which is undesirable from the viewpoint of resource conservation.

This is because, if these are intentionally returned, the transparency, slipperiness, dimensional stability, etc. may be significantly deteriorated, and there is a risk that a polypropylene film that cannot be put to practical use may be produced. Therefore, the total ethylene content is at least 70
A desirable range is 85% by weight, more specifically, 85% by weight. Of course, if the above-mentioned return is not taken into consideration, it goes without saying that it can be used even outside this range. In addition to the above-mentioned polymers mainly composed of ethylene, polymers mainly composed of propylene, such as polypropylene, propylene-ethylene copolymers containing a large amount of propylene (for example, 55 mol% or more), and propylene-1-butene, can also be used. A polymer or the like may also be added. It is convenient to add these polymers containing propylene as a main component to improve lubricity and the like. In addition, lubricants, anti-blocking agents, stabilizers, colorants, ultraviolet absorbers, antistatic agents, other thermoplastic polymers, etc. may be added to the heat-sensitive adhesive resin layer to meet various requirements such as transparency and thermal adhesiveness. It goes without saying that the present invention can also be applied to substances added within a range that does not impair quality.

Any known method may be used to manufacture the print lamination film 1, which is a laminated film comprising the base film layer 2 and the heat-sensitive adhesive resin layer 3 according to the present invention. The thickness of the heat-sensitive adhesive resin layer 3 may be appropriately selected depending on the smoothness of the surface of the printed paper, the required adhesive strength, etc., and is usually preferably 1 to 5 microns. Although the use of a layer with a thickness of 5 μm or more is not prohibited, it results in an unnecessary layer thickness.

Although there are no particular restrictions on the heat-sensitive adhesive resin layer 3, it is desirable that the layer be subjected to a surface treatment in order to impart thermal adhesion to the printing paper or the like 4. Examples of such treatment methods include common methods such as chemical treatment, flame treatment, and corona discharge treatment, but corona discharge treatment is particularly effective, and among them, corona discharge treatment in a nitrogen atmosphere with an oxygen concentration of less than 20.9% by volume It is even more effective to do this. At this time, the effect is recognized when the residual oxygen concentration in the nitrogen atmosphere is less than 20.9 volume%, which is lower than the 20.9 volume% that is considered to be the oxygen concentration in air.
The lower the residual oxygen concentration, the greater the effect, and is preferably 5% by volume or less. Corona discharge treatment strength and film temperature during treatment may be selected appropriately depending on the desired adhesive strength, but usually 20 to 100 W.
min/m ² and room temperature to about 90°C. Any known method may be used to create a nitrogen atmosphere.
Examples include a method in which the entire corona discharge treatment mechanism is surrounded by a box and the air inside is replaced with nitrogen gas, and a method in which nitrogen gas is sprayed onto the corona discharge section through a slit or the like. In addition, although the surface treatment applied to the heat-sensitive adhesive resin layer 3 as necessary is performed before lamination,
There is no particular restriction on whether it is carried out after lamination. Further, in the print lamination film 1 according to the present invention, a film layer made of an appropriate material may be laminated on the base film layer 2, or between the base film layer 2 and the heat-sensitive adhesive resin layer 3. Of course, a three-layer structure or a three-layer structure or more may be formed by interposing an intermediate layer made of a suitable thermoplastic polymer layer, such as a propylene-based copolymer containing propylene as a main component.
Next, the method of the present invention will be explained with reference to the drawings. 1st
The figure is a side view showing the main parts of a preferred apparatus used in the method of the first invention. Paper feed section (not shown)
In this example, the printed sheets are fed to the pressure bonding section 11 by a conveyor or the like with the printed side facing up. The sheets 4 are supplied with opposing ends successively overlapped as shown in FIGS. 2 and 3. This crimping part 11 is made up of a crimping part A of a heating roll 7 and a crimping roll 8, and a polished part B of an endless circulation member 10 provided in surface contact with the heating roll 7 and the heating roll 7. It is stretched endlessly and in a circulating manner using guide rolls and the like.

For example, when laminating a print lamination film 1 consisting of a base film layer 2 and a heat-sensitive adhesive resin layer 3 as shown in FIG. 4 and a printing sheet 4, the heat-sensitive adhesive resin layer of the film 1 is 3 and the printing surface of the sheet 4 are aligned, and the base film layer 2 is placed on the heating roll 7 side and the sheet 4 is placed on the pressure roll 8 and endless circulation member 10 side, First, it is supplied to the crimping section A, where it is thermocompression bonded to form a laminate 6'. Subsequently, the laminate body 6' is run on the surface of the heating roll 7, and further, by the action of the endless circulation member 10, the laminate body 6' is appropriately pressed against the surface of the heating roll 7. Thus, it passes through the glazing section B and becomes a sheet 6 with a glazed print laminate (hereinafter referred to as "print laminate product") as shown in FIG. In addition, in Figure 5 (5)
indicates the printed part. At this time, the temperature and pressure of the crimped portion A may be determined appropriately taking into consideration the heat sensitivity of the thermosensitive adhesive resin layer 3 and the properties of the printing paper 4, etc., but preferably the temperature and pressure are 80 to 160°C, and the linear pressure is Approximately 30-120Kg/cm is sufficient. Further, the endless circulation member 10 of the polished portion B does not reach the heating roll 7 and the pressing force may be determined appropriately depending on the degree of polishing, and it may be in a state where the endless circulation member 10 of the polished portion B is simply in contact and no pressure is applied. 0.1~ in pressure
^{Approximately} 10Kg/cm2 is desirable. What is shown in FIG. 7 is a side view of another embodiment, in which an endless circulation member 10 is stretched in an endless manner by a guide roll 25 and a pressure bonding roll 8, and the endless circulation member 10 is endlessly stretched at the pressure bonding portion A at the same time as crimping. Polishing is also performed by the circulating member 10, and subsequently, polishing is performed continuously by the action of the endless circulating member 10, which is advantageous in terms of polishing. In this case, the temperature and pressure of the crimped portion A may be set as appropriate, and the same level as in the previous example is sufficient, and the subsequent pressing force exerted on the heating roll 7 by the endless circulation member 10 may also be set as appropriate, and the same level as in the previous example is sufficient.

Next, a preferred example of the second invention will be described with reference to FIG. The printing sheets 4 sent from a paper feed section (not shown) in the same manner as in the embodiment shown in FIG.
It is supplied to the crimp section 11 in the same state as in the previous example. This pressure bonding part 11 also includes a heating roll 17 and a pressure bonding roll 18.
The polished portion 21 provided next is made up of a mirror-finished heating metal roll 19 and an endless circulation member 10 stretched in an endless manner by a guide roll.

Now, print lamination film 1 similar to the previous example.
When laminating the sheet 4 and the printed sheet 4, first, the heat-sensitive adhesive resin layer 3 of the film 1 and the printed surface of the sheet 4 are brought together, and the base film layer 2 of the film 1 is laminated with a heating roll. 17 and mirror-finished heating metal roll 19 side, sheets 4 are arranged so as to be on the crimping roll 18 and endless circulation member 10 side, and are crimped and laminated in the crimping section 11, and then the crimped laminate is Body 6' is the polishing part 2
When passing through 1, it is pressed by the endless circulation member 10,
The polishing effect is exhibited, resulting in a printed laminated product 6. At this time, the temperature and pressure of the crimped portion 11 is desirably the same as in the previous example, but may be set as appropriate, and the temperature conditions of the heating metal roll 19 in the polished portion 21 may be set as appropriate, but are preferably about 80 to 160°C. Further, the pressure exerted by the endless circulating member 10 on the mirror-finished heating metal roll 19 may be determined as appropriate depending on the degree of polishing, and may be in a state where the endless circulation member 10 is merely in contact with no pressure, but usually the surface pressure
A pressure of about 0.1 to 10 Kg/cm ² is desirable, and by applying pressure in this manner, the laminate body 6 runs in moderate contact with the surface of the heated metal roll 19, so that the polishing effect is further exhibited.

FIG. 8 is a side view of another embodiment. In this embodiment, the main body of the print laminating apparatus is basically the same as that shown in FIG. ’ is passed in the opposite way from the previous example. That is, the film 1 side of the laminate body 6' bonded under heat and pressure in the polishing section 21 is placed on the endless circulation member 10 side, and the sheet 4 is placed on the heating metal roll 1 side.
9 side and passes through the polishing section 21 to produce a polishing effect. The temperature and pressure conditions of the polishing section 21 in this example may be arbitrary, and may be, for example, comparable to those of the previous example.

The heating rolls 17, 17 in the above embodiments are preferably made of metal, but there are no particular restrictions on the material, heating means, etc., and any appropriate material may be used. However, it is preferable to have a mirror-finished surface, and in particular, for the embodiment of FIG. 1 according to the first invention, a mirror-finished surface is desirable in view of the polishing effect. Further, the heating metal roll 19 may be made of any suitable material, heating means, etc., but preferably one having a mirror-finished surface is suitable for the polishing effect. Crimping roll 8,1
There are no special restrictions on 8, for example, rubber hardness.
A rubber roll of 70-95 degrees is sufficient. Further, the endless circulation member 10 may be a belt-shaped member made of metal, rubber, cloth, etc., but is not particularly limited and may be made of any suitable material.

The printed laminated product thus produced is normally passed through a cooling section if necessary, and then cut into individual sheets for use.

The above describes preferred embodiments 1.2 of the present application, and the present application is not limited to such embodiments.
Of course, it is also possible to adopt an appropriate embodiment.

Next, specific examples of the present invention will be described.

Example Crystalline polypropylene melt extruded film (thickness
750μ) was stretched 5 times in the machine direction at 130°C using a roll stretching machine, and then 70% by weight of an ethylene-vinyl acetate copolymer containing 90% by weight of ethylene and 90% by mole of ethylene were placed on the uniaxially stretched film. low crystalline ethylene-1-butene random copolymer of
A blend consisting of 30% by weight was laminated by melt extrusion to a thickness of 30μ, and then stretched 10 times in the transverse direction at 160°C to form a biaxially stretched polypropylene layer (base film layer 2) of 15μ, as described above. Ethylene-vinyl acetate copolymer blend layer (heat-sensitive adhesive resin layer 3)
A 3μ thick laminated film was obtained, and the heat-sensitive adhesive resin surface was subjected to corona discharge treatment in a nitrogen atmosphere with a residual oxygen concentration of 1.0% by volume at a film temperature of 60°C and a treatment intensity of 25w.min/m ² to produce print lamination film 1. I got it. The obtained film was slit into a width of 780 mm and a length of 2000 m using a slitter, and wound into a 3-inch paper tube.

The rolled film rolled up in the paper tube is fed with a printing paper strip 4 having a length of 540 mm and a width of 760 mm from the paper feeding section (not shown) of the apparatus shown in FIG. Heat-sensitive adhesive resin layer 3 and sheet paper 4 of printed lamination film 1
The printed surfaces of Crimp laminated. At this time, the endless circulation member 10 is a stainless steel belt, the heating roll 7 is a metal surface with a mirror finish and a diameter of 450 mm, and the temperature is 120 mm.
The pressure roll 8 was a 250 mm diameter rubber roll with a rubber hardness of 90 degrees, and the pressure was 100 kg/cm. In addition, the endless circulation member 10 is connected to the heating roll 7.
The pressing pressure, that is, the pressing force against the laminate body 6' was about 0.5 kg/cm ² , and as a result, a glossy and beautiful printed laminate product 6 could be obtained. The speed of the laminating machine shown above is 15~
20 m/cm ² , and the printed laminated products 6 can be obtained continuously at a fairly high speed, and after being polished, they are cut into printed paper strips after passing through a cooling process if necessary.

Example A melt-extruded crystalline polypropylene film (thickness 750μ) was stretched 5 times in the longitudinal direction using a roll stretching machine at 130°C, and then ethylene-acrylic acid with an acrylic acid content of 5% by weight was placed on the uniaxially stretched film. The copolymer was laminated by melt extrusion to a thickness of 30μ, and then laminated in the transverse direction at 160℃ for 10 minutes.
A laminated film with a biaxially stretched polypropylene layer (base film layer 2) of 15 μm and an ethylene-acrylic acid copolymer layer (heat-sensitive adhesive resin layer 3) of 3 μm was obtained by stretching the film twice, and the ethylene-acrylic acid copolymer side was Film 1 for print lamination was obtained by corona discharge treatment at a film temperature of 40° C. and a treatment intensity of 40 w.min/m ² in a nitrogen atmosphere with a residual oxygen concentration of 0.5% by volume. The obtained film is slittered to a width of 780 mm.
The material was slit to a length of 2,000 m and rolled up into a 3-inch paper tube.

The rolled film rolled up on the paper tube is fed from the paper feeding section (not shown) of the apparatus shown in FIG. 6 with a printing paper strip 4 of length 450 mm and width 786 mm with the printing side facing up, and the other paper is fed out from the top. The heat-sensitive adhesive resin layer 3 of the printed lamination film 1 and the printed surface of the sheet 4 are aligned, and the sheet 4 is pressed onto the base film layer 2 on the heating roll 17 and heating metal roll 19 side. By being supplied so as to be on the roll 18 and endless circulation member 10 side, thermocompression bonding and lamination were performed by the compression bonding section 11. The endless circulation member 10 used at this time was a stainless steel belt. The heating roll 17 was made of metal, had a diameter of 450 mm, and had a temperature of 130°C. The pressure roll 18 was a rubber roll with a rubber hardness of 90 degrees and a diameter of 250 mm, and the pressure for pressure was 100 kg/cm. Subsequently, the thermocompression bonded laminate body 6' advanced to the polishing section 21. This heating metal roll 19 has a diameter of 450 mm and has a mirror finish on its surface, and the temperature is ¹³⁰ °C. Ta. This kind of polishing part 2
By passing the laminate body 6' through 1, a glossy and beautiful printed laminate product 6 could be obtained. In addition, the laminating equipment in this example is 30 to 40 m/
It was driven at a fairly high speed of min.

Comparative Example For comparison, print laminating film 1 and sheet paper 4, which had been coated with a conventional solvent-type adhesive and subjected to a drying process, were applied to the apparatus shown in Fig. 6 under the same conditions as in the example. Although it was almost the same as the example, foaming was severe and it could hardly be used as a product. In order to suppress foaming, tests were carried out under various crimping conditions.
The most preferable product was obtained at a temperature of 100℃ and a surface pressure of around 1Kg/ ^cm2 , but this product also had some foaming.
The gloss was also inferior to the examples, and no conditions were found that would produce a product similar to the examples, which had both good gloss and foaming.

<Effects of the Invention> As described above, according to the present invention, high-speed operation is possible, and it is possible to create glossy and beautiful printed lamination products without foaming, which is superior to the conventional printed lamination method using solvent-type adhesives. There is a marked difference in the quality of the product compared to other products, and this also shows that the present invention is superior and has exceptional effects.

In particular, in the present invention, between the heating roll and the pressure roll, the print lamination film is placed on the heating roll side.
Printed paper or the like is placed on the pressure roll side and bonded under heat to form a laminate, which is then run between the heating roll or a separate heating metal roll and an endless circulation member provided in surface contact with these rolls. So,
The endless circulating member effectively acts on the laminate, and therefore the components of the laminate are more closely integrated with each other, and better polishing can be achieved.

[Brief explanation of drawings]

FIG. 1 is a side view of the main parts of a preferred apparatus used in the first method of the present invention, FIG. 2 is a plan view showing the feeding state of printing paper, etc., and FIG. FIG. 4 is a side view for explaining a printed lamination product; FIG. 4 is a sectional view showing an example of a film for printed lamination according to the present invention;
The figure is a cross-sectional view of a printed laminated product according to the present invention, and FIG.
7 is a drawing showing another embodiment of the apparatus shown in FIG. 1, and FIG. 8 is a drawing showing another embodiment of the apparatus shown in FIG. 1... Film for printed lamination, 2... Base film layer, 3... Heat sensitive adhesive resin layer, 4... Printing paper etc. (leaf paper), 6... Laminate body, 6... Print laminated product, 7,17... heating roll, 8,
18...Crimping roll, 10...Endless circulation member, 1
1...Crimping part, 19...Heating metal roll.

Claims (1)

[Claims] 1. When laminating a print lamination film consisting of at least two layers, a base film layer and a heat-sensitive adhesive resin layer, with a printing paper, etc., there is a process between a heating roll and a pressure roll arranged oppositely. , the film is placed on the heating roll side and the printing paper or the like is placed on the pressure roll side, and thermocompression bonding is performed to obtain a laminate, and then between the heating roll and an endless circulation member provided in surface contact with the heating roll. A print lamination method characterized in that the thermocompression-bonded laminate body is run on a laminate body to obtain a polished print laminate product in which the film surface is subjected to a polishing process. 2. When laminating a print lamination film consisting of at least two layers, a base film layer and a heat-sensitive adhesive resin layer, with a printing paper, etc., the film is placed between a heating roll and a pressure roll arranged opposite to each other. A laminate is obtained by placing printing paper or the like on the pressure roll side and subjecting it to thermocompression bonding, and then a heating metal roll separate from the heating roll and an endless circulation member provided in surface contact with the roll. A print lamination method characterized in that the thermocompression-bonded laminate body is run between the layers to obtain a polished print laminate product in which the film surface is polished.