JPH064317B2 - Laminating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in the following order.

A Industrial Field B Outline of the Invention C Prior Art (Figs. 8 to 10) D Problems to be Solved by the Invention E Means for Solving Problems (Fig. 1) F Action (Fig. FIG. 1, FIG. 3, FIG. 10) G Example (FIGS. 1 to 7) H Effect of the invention A Industrial field of application The present invention relates to a laminating apparatus, and particularly to a base paper inserted from a base paper insertion port. It is suitable to be applied to an automatic laminating device that automatically adheres a protective film to the surface.

B Outline of the Invention The present invention uses a laminate film formed by continuously adhering a protective film and an adhesive layer on a base film, and a protective film is used in a state where a part of the protective film is adhered on a base paper. By strongly heating the film and the adhesive layer to form a fracture portion, the protective film and the adhesive layer to be adhered to the base paper are cut off from the base film.

C Prior Art As an automatic laminating apparatus of this type, the one having the configuration shown in FIG. 8 has been proposed. In FIG. 8, reference numeral 1 denotes a supply reel, which supplies the laminating film 2 wound around the reel body to the laminating roller 4 while passing around the guide roller 3. The laminating roller 4 is rotationally driven in the counterclockwise direction as shown by an arrow a by a separate drive motor, and thus the laminating film 2 is pulled out from the supply reel 1.

As shown in FIG. 9, the laminate film 2 has a base film 2A made of a heat-resistant synthetic resin material, and is made of a thermoplastic synthetic resin material on the surface of the base film 2A on the laminating roller 4 side with a predetermined space. The protective film 2B and the adhesive layer 2C are attached so as to be sequentially laminated. The protective film 2B and the adhesive layer 2C are
As shown in FIG. 10, for example, the base paper L is formed in a rectangular shape as a whole so as to have a length slightly shorter than the length and width of the base paper L, and the base paper L is aligned on the adhesive layer 2C. At this time, the adhesive layer 2C and the protective film 2B do not protrude from the base paper L outside the base paper L.

Actually, the base paper L is inserted one by one through the paper feed mechanism 5 from the base paper insertion port (not shown), and the laminating roller 4 is inserted.
Is overlaid on the protective film 2B and the adhesive layer 2C positioned at the upstream side position.

Further, a sublimation dye molecule obtained by separately transferring an original image by a printing device is attached to the surface of the base paper L, and the base paper L and the adhesive layer are heated by the heat of the dye molecule heated during lamination. 2C or the protective film 2B is dispersed and fixed and the surface is protected.

Above the laminating roller 4, a laminating heater 6 is provided so as to be in pressure contact with the surface of the laminating roller 4 with the laminating film 2 interposed therebetween. As described above with reference to FIG. 10, the base paper L is placed on the adhesive layer 2C. When the laminate film 2 is passed through between the laminating roller 4 and the laminating heater 6 together with the base paper L in the state where is aligned, the laminating heater 6 heats the adhesive layer 2C and the protective film 2B. . At this time, the protective film 2B is slightly softened, while the adhesive layer 2C is activated to a state in which a sufficient adhesive force is produced,
Thus, the protective film 2B is in a state of being easily peeled off from the base film 2A, and at the same time, the adhesive layer 2C has the base paper L.
It is possible to obtain a state in which it is easy to adhere to.

The activation of the adhesive layer 2C and the protective film 2B as described above occurs while the adhesive layer 2C and the protective film 2B and the base paper L pass through the laminating heater 6, and during this time, the dye on the base paper L is dyed. The molecules are sublimated and dispersed in the base paper L and the protective film 2B. In the meantime, when the adhesive layer 2C and the protective film 2B and the base paper L are rapidly cooled as they go out from the downstream side of the laminating heater 6, the protective film 2B and the adhesive layer 2C are cooled. Is rapidly solidified, the protective film 2B is adhered to the surface of the base paper L via the adhesive layer 2C, and the dye molecules dispersed in the base paper L and the protective film 2B are solidified and fixed. Will be done.

After that, the laminating film 2 reaches the guide roller 8 constituting the paper discharge mechanism 7 together with the base paper L. The guide roller 8 is the base film 2A of the laminate film 2.
Is transferred while changing the transfer direction to the direction in which it is separated from the paper discharge mechanism 7. At this time, the base film 2A is the base paper L.
While the adhesive layer 2C is adhered and solidified on the base paper L with a strong adhesive force, the adhesive layer 2C and the protective film 2C of the laminate film 2 are separated in a direction perpendicular to 2B is peeled off from the base film 2A and remains on the base paper L, and thus only the base film 2A is taken up by the take-up reel 9.

Thus, the base paper L separated from the base film 2A is conveyed in the direction of the paper discharge port while being sandwiched between the paper discharge rollers 10 and 11 of the paper discharge mechanism 7.

The above operation is repeated each time the base paper L is inserted into the paper feed mechanism 5, and the next protective film 2B and adhesive layer 2C formed on the base film 2A are kept at a predetermined interval therebetween. , Is positioned at the upstream side of the laminating roller 4 and waits for the next base paper L to be inserted. Thus, every time the base paper L is inserted, the laminating operation is automatically repeated.

D. Problems to be Solved by the Invention By the way, in order to automatically repeat the laminating operation in this way, the protective film 2 is formed on the base film 2A.
B and the adhesive material layer 2C must be formed with a predetermined gap maintained. The reason is that the laminating roller is laminated at the timing when the laminating process is performed on the base paper L by one protective film 2B and the adhesive layer 2C and the paper ejection is completed by the paper ejection rollers 10 and 11 of the paper ejection mechanism 7. This is because the next protective film 2B and the adhesive layer 2C must be positioned at the upstream position of No. 4.

Due to such a necessity, as shown in FIG. 10, it is necessary to form a space 2D to which the protective film 2B and the adhesive layer 2C are successively adhered, on the base film 2A. Empty space 2D on film 2A
Is difficult to form easily.

As one of the methods, first, the protective film 2B is applied in the longitudinal direction of the base film 2A while providing the void 2D, and then the adhesive layer 2C is similarly provided while providing the void 2D.
A method of applying is conceivable. However, in this case, there is a great risk that the protective film 2B and the adhesive layer 2C will not be completely laminated and will be displaced, and this cannot be said to be a practical method.

If the adhesive layer 2C protrudes from the protective film 2B to the outside due to the misalignment, when the laminate film 2 passes through the laminate heater 6, the protruded adhesive layer 2C is unnecessarily transferred to the laminating roller 4. Inconvenience such as adhesion occurs, which is not desirable.

As a practical method for solving this problem, after the protective film 2B is applied over the entire surface of the base film 2A, the adhesive layer 2C is applied over the entire surface of the base film 2A, and then the space 2D is obtained. A method of cutting off the portion to be cut with a cutter is adopted. This method can be realized by controlling the positioning so that the blade of the cutter does not cut the base film 2A and can completely cut the adhesive layer 2C and the protective film 2B.

However, this method requires a considerable amount of time and labor to cut out the portion corresponding to the void 2D, and it is desirable to simplify it from the viewpoint of reducing the cost of the laminate film.

The present invention has been made in consideration of the above points, and does not require any of the above-mentioned troublesome work, and can simply and easily make a space 2D.
The present invention intends to propose a laminating apparatus capable of realizing a laminating process capable of obtaining the same effect as that provided with.

E Means for Solving the Problems In order to solve the above problems, in the present invention, a laminate film 2 in which a protective film 2B and an adhesive layer 2C are continuously attached on a base film 2A, and a laminate film 2 protective film 2B and adhesive layer 2
The base paper L to which the protective film 2B is adhered on the surface by the adhesive layer 2C by being heat-treated while being positioned so as to overlap a part of C, and the protective film on the base paper L. A heater 6 for heating the protective film 2B and the adhesive layer 2C with heat for forming the fractured portion 21 is provided in a state where a part of 2B is adhered.

F action When the base paper L is positioned on the protective film 2B and the adhesive layer 2C so as to overlap each other and then heat-treated, the protective film 2B is adhered onto the base paper L by the adhesive layer 2C and thus laminated. A finished paper is obtained.

When the protective film 2B and the adhesive layer 2C are strongly heated in the state where the adhesive layer 2C and the protective film 2B are adhered to the base paper L in this manner, the protective film 2B and the adhesive layer 2C in this portion are strongly heated. A fractured portion 21 is formed in which 2C is weakened and the tensile strength is extremely deteriorated. Accordingly, the protective film 2B and the adhesive layer 2C are used as the base film 2
Even if the laminating film 2 formed by continuously adhering onto A is used, it is possible to cut from the breaking portion 21 as needed by a size necessary for laminating on the base paper L. It is possible to eliminate the need to previously provide a space 2D (FIGS. 10 and 12) between the protective film 2B and the adhesive layer 2C.

As a result, a laminated film manufactured by a simple manufacturing process in which the protective film 2B and the adhesive layer 2C are simply applied to the entire surface of the base film 2A without requiring a complicated manufacturing process for the laminate film. An applicable laminating apparatus can be easily obtained.

G. Embodiment An embodiment of the present invention will be described in detail below with reference to FIG. 2 in which parts corresponding to those in FIG. In the case of FIG. 2, the laminate film 2 is a protective film 2B as shown in FIGS. 3 and 4 corresponding to FIGS.
And the adhesive layer 2C is continuously adhered on the surface of the base film 2A over the entire surface within a predetermined width in the longitudinal direction, and corresponds to the space 2D described above with reference to FIGS. 10 and 12. Is different in that it is not provided.

In addition to this, in the case of FIG. 2, the laminate heater 6 is mounted so as to be movable in the vertical direction, and the protective film 2B and the adhesive layer 2C are attached to the base paper L in the same manner as described above with reference to FIG. At the time of the laminating process of adhering through, the laminating heater 6 is pressed against the laminating roller 4 with the laminating film 2 interposed therebetween to perform the laminating heating process.

In addition to this, the laminate heater 6 is heated to a high temperature for a comparatively short time at the timing when the laminate heating process is completed, thereby strongly heating the protective film 2B and the adhesive layer 2C of the laminate film 2. The fractured portion 21 is formed by performing a weakening treatment for forcibly reducing the tensile strength of the portion that has been subjected to this strong heating.

As shown in FIG. 5, the laminate heater 6 has a rectangular heating head 23 having a ceramic structure in which a temperature detecting resistor 22 is embedded, and a heat generating metal oxide is formed on the back surface of the heating head 23. The resistor 24 is attached.
The resistor 24 is applied using, for example, thick film resistance printing technology, and its both ends are connected to a heating power source to generate juule heat, which is transferred to its surface through the thickness of the heating head 23. The surface temperature of the heating head 23 is maintained at a predetermined value by controlling the heating power source based on the detection output of the temperature detecting resistor 22.

The heating head 23 is supported from the back side by a supporting member 25 made of a heat insulating material, and the surface thereof is laminated film 2
And the base paper L may be sandwiched between the heating head 23 and the laminating roller 4 of the laminating film 2 by the heat supplied from the resistor 24. It is designed to partially heat the part.

In fact, the thickness of the heating head 23 is selected to be a sufficiently small value so as to reduce the temperature capacity, and therefore the temperature on the surface thereof is about 200 [° C.] during the laminating process, while During the forming process, in a short time
It is designed so that it can rise to about 250 [° C].

In the above configuration, the laminating apparatus performs the laminating process on the base paper L in the same manner as the base paper L by performing the laminating process on the base paper L by using the protective film 2B and the adhesive layer 2C continuously formed on the base film 2A. It is executed while performing a cutting process (this is called a breaking process).

First, as shown in FIG. 1 (A), the laminate heater 6 and the laminate roller 4 perform a laminate heat treatment on the laminate film 2A by the tips of the protective film 2B and the adhesive layer 2C attached to the base film 2A. The laminating film 2 and the laminating roller 4 are stopped in a state where the laminating film 2 and the laminating roller 4 are aligned with the position P1 on the upstream side by a predetermined distance W from the position P0. Thus, the laminating apparatus as a whole is in a standby state waiting for the insertion of the base paper separately from the base paper insertion port.

In this standby state, as shown in FIG. 1 (B), the base paper L is inserted and the protective film 2B and the adhesive layer 2C are provided.
When aligned above, heating power is supplied to the laminating heater 6, and when the temperature rises to the laminating processing temperature, the laminating roller 4 is rotationally driven, as shown in FIG. 1 (C). In this way, the laminate film 2 and the base paper L are transferred between the laminate heater 6 and the laminate roller 4 while being heated.

When the rear end of the base paper L reaches a position near the laminating processing position P0 as shown in FIG. 1 (D), the laminating roller 4 is stopped from rotating and the laminating heater 6 is strongly heated. At this time, a strip-shaped rupture portion 21 (FIG. 3) is formed so as to cross the protective film 2B and the adhesive layer 2C corresponding to the rear end of the base paper L linearly in the width direction.

As shown in FIG. 6, when the rupture portion 21 is strongly heated, the temperature of the protective film 2B and the adhesive layer 2C becomes a value T _X that exceeds the yield strength T _B of the tensile strength, and therefore becomes strong. The tensile strength of the heated part is extremely reduced and cannot be recovered (this is called weakening). Therefore, if the protective film 2B and the adhesive layer 2C are stretched from both sides of the break portion 21, the result is that the protective film 2B and the adhesive layer 2C tend to be broken at the position of the break portion 21. Incidentally, as shown in FIG. 6, synthetic resin materials generally have a property that their tensile strength further deteriorates when heated at a temperature equal to or higher than the yield point T _B according to the past heating history. Therefore, by selecting the heating temperature in FIG. 1 (D) as the temperature T _X which exceeds the yield point T _B , the above-mentioned breaking operation can be realized.

After that, the laminating apparatus pulls up the laminating heater 6 to a position where it is separated from the laminating roller 4 as shown in FIG. 1 (E), and then drives the supply reel 1 to rotate in the opposite direction as shown in FIG. By doing so, the laminate film 2 remaining on the supply reel 1 side from the laminating position P0 is slightly rewound. At this time, the protective film 2B and the adhesive layer 2C on the take-up reel 9 side from the laminating position P0 are in a state of being adhered on the base paper L and being sandwiched and held by the paper discharge rollers 10 and 11 (FIG. 2). Therefore, when the supply reel 1 performs the rewinding operation, the laminating position P
From 0, the protective film 2B and the adhesive layer 2C on the supply reel 1 side are stretched in the direction away from the break portion 21,
Thus, a break occurs at the weakened break portion 21,
The protective films 2B and 2C are separated from the portion bonded to the base paper L.

The amount of rewinding of the supply reel 1 at this time is a position where the tip portions (the breakage portions 21 remain) of the protective film 2B and the adhesive layer 2C on the supply reel 1 side coincide with the initial positioning position P1 from the breakage position. The value is selected so that it will return to and stops when it comes to that position. On the other hand, at this time, the discharge roller 10
The base paper L sandwiched between and held by 11 and 11 (the protective film 2B is adhered by the adhesive layer 2C) is driven as the finish rollers by driving the discharge rollers 10 and 11 from the discharge port. The paper is ejected.

Thereafter, as shown in FIG. 1 (G), the laminated heater 6
Returns to the state of being pressed against the laminating roller 4 with the laminating film 2 (only the base film 2A remains) sandwiched therebetween, and returns to the standby state similar to that described above with reference to FIG. 1 (A).

In this way, the lamination process for one base paper L is completed, and when a new base paper is subsequently inserted from the base paper insertion port, the above-described operation is repeated, whereby the automatic lamination process is performed.

According to the above-mentioned structure, as the laminate film 2 to be mounted on the supply reel 1, as described above with reference to FIGS. 3 and 4, the protective film is continuously provided over the entire surface of the base film 2A in the longitudinal direction. 2B and the adhesive layer 2C can be applied, so that the laminated film 2
The manufacturing and processing steps can be significantly simplified as compared with the conventional case. Therefore, the cost of the laminated film can be further reduced.

In addition to this, it is not necessary to previously attach the protective film 2B and the adhesive layer 2C having a predetermined size on the base film 2A, so that a laminated film having a common specification may be prepared for base papers having various sizes. Thus, the compatibility of the laminated film can be further improved.

In the above description, as the breakage portion 21, the case where a weak portion having a predetermined width is formed in a strip shape so as to cross the protective film 2B and the adhesive layer 2C linearly in the width direction has been described. The shape of is not limited to a linear shape, and various shapes such as a corrugated shape and a jagged shape may be selected.

Further, instead of being formed continuously in the width direction, the breakage portion 21 may be formed in a jump shape like a perforation, for example. In such a case, the laminate heater 6 may have a so-called print head configuration as shown in FIG. 7, for example.

In the case of FIG. 7, a large number of thin film resistors 32 are arranged in the width direction on a semi-cylindrical base 31 having a semi-cylindrical shape, and the thin film resistors 32 are mounted in a support member 33 that supports the base 31 with respect to each thin film resistor 32. The heating power source is selectively supplied from the integrated IC circuit.

In the configuration of FIG. 7, when laminating the base paper L, the protective film 2B is controlled by controlling, for example, all the thin film resistors 32 to generate a heating temperature corresponding to the laminating temperature. Adhesive layer 2
It can be adhered to the base paper L via C. Here, the thin film resistor 32
If the space between them is selected to be sufficiently small for practical use, it is possible to obtain a finished paper in which the protective film 2B is adhered over the entire width of the base paper L for practical use.

When the breakage portion 21 is formed thereafter, the current flowing through the thin film resistor 32 is further increased, so that the protective film 2B and the adhesive layer 2C are fragilely treated in a pattern corresponding to the arrangement pattern of the thin film resistor 32. Thus, the protective film 2B and the adhesive layer 2C can be broken in a so-called perforated shape.

Further, in the above-mentioned embodiment, the break portion 21 is formed only in the width direction of the base film 2A.
It may be formed in the longitudinal direction. That is, in the case of FIG. 3, the protective film 2B and the adhesive layer 2C are not attached to both side edge portions in the width direction of the base film 2A, but instead, the protective film 2B is also attached to the both side edge portions. Also, the adhesive layer 2C is applied in advance, and both side edge portions are cut off when laminating is performed.

In this case, for example, the laminating heater 6 having the configuration described above with reference to FIG. 7 is used, and its boundary position or both side edge portions are left so that both side edge portions in the width direction are left during the laminating process described above with reference to FIG. Thin film resistor 32 in position
On the other hand, by applying a stronger current than the thin film resistor 32 in the central portion, the weakened fractured portions are formed in the longitudinal direction on both side edge portions while laminating the central portion. With this configuration, both widthwise edges of the base film 2A can be cut off by the breaks formed in the longitudinal direction.

H Effect of the Invention As described above, according to the present invention, the protective film 2B and the adhesive layer 2 are continuously compared on the base film 2A.
By making it possible to cut out C as much as necessary for the laminating process during the laminating process, it is possible to easily obtain a laminating apparatus that can use a laminating film having a remarkably simple manufacturing process as a laminating film. You can

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the processing steps of the laminating apparatus according to the present invention, FIG. 2 is a schematic diagram showing an embodiment of the laminating apparatus according to the present invention, and FIGS. 3 and 4 show the laminating film 2 thereof. FIG. 5 is a plan view and a side view for explanation, FIG. 5 is a cross-sectional view showing a detailed structure of the laminate heater 6, FIG. 6 is a characteristic curve diagram for explanation of weakening treatment of the protective film 2B and the adhesive layer 2C, FIG. 7 is a perspective view showing another embodiment of the laminate heater, FIG. 8 is a schematic diagram showing a conventional laminating apparatus, and FIGS. 9 to 12 are sectional views, side views, and planes showing a conventional laminating film. It is a figure. 1 ... Supply reel, 2 ... Laminated film, 2A ...
… Base film, 2B …… Protective film, 2C ……
Adhesive layer, 4 ... Laminating roller, 6 ... Laminating heater, 9 ... Take-up reel, 21 ... Breakage part, L ... Base paper.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B29L 9:00 4F

Claims (1)

[Claims] 1. A laminate film comprising (a) a base film and a protective film and an adhesive layer continuously attached to the base film, and (b) a part of the protective film and the adhesive layer of the laminate film. In a state of being positioned so as to overlap with each other, a heat treatment is applied to the base paper on which the protective film is adhered by the adhesive layer, and (c) one of the protective film on the base paper. A laminating apparatus, comprising: a heater that heats the protective film and the adhesive layer so that a broken portion is formed in a state where the portions are adhered to each other.