JPS61213152A - Laminating device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A: Industrial field of application B: Overview of the invention C: Prior art (Fig. 8 to 1G) D: Problem to be solved by the invention E: Means for solving the problem (Fig. 1) F: Effect (Fig. 1) 1
(Fig. 3, Fig. 1O) G Example (Fig. 1 to Fig. 7) H Effect of the invention It is suitable for application to an automatic laminating device that automatically adheres a protective film to a surface.

B Summary of the Invention The present invention uses a laminate film in which a protective film and an adhesive layer are continuously adhered to a base film. The protective film and adhesive layer to be adhered to the base paper are cut off from the base film by applying strong heat to the film and adhesive layer to form a rupture portion.

C. Prior Art As an automatic laminating device of this type, one having the configuration shown in FIG. 8 has been proposed. In FIG. 8, reference numeral 1 denotes a supply reel, which supplies the laminate film 2 wound around a reel body to a laminate roller 4 around a guide roller 3. The laminating roller 4 is moved by the arrow a by a separate drive motor.
It is rotated in a counterclockwise direction as shown in FIG.

As shown in FIG. 9, the laminating film 2 has a base film 2A made of a heat-resistant synthetic resin material, and a thermoplastic synthetic resin material is placed on the surface of the base film on the side of the laminating roller 4 of the two members at a predetermined distance. A protective film 2B and an adhesive layer 2C are laminated in sequence. This protective film 2B and adhesive layer 2C are
As shown in FIG. 10, for example, the base paper is formed into a rectangular shape as a whole with a length slightly shorter than the length and width of the rectangular base paper, and the base paper is aligned on the adhesive layer 2C. At this time, the adhesive 12G and the protective film 2B are arranged outside the base paper so that they do not protrude from the base paper.

Note that in practice, the base paper is inserted one by one through the paper feed mechanism 5 from the base paper insertion slot (not shown), and the laminating roller 4
The protective film 2B and the adhesive layer 2C are placed on top of the protective film 2B and the adhesive layer 2C, which are positioned at an upstream position.

In addition, sublimable dye molecules are attached to the surface of the base paper by transferring the original image using a separate printing device, and these dye molecules are applied to the base paper and the adhesive layer 2C or the protective layer by the heat heated during lamination. It is designed to be dispersed and fixed within the film 2B and to protect the surface.

A laminate heater 6 is provided above the laminate roller 4 so as to be in pressure contact with the surface of the laminate roller 4 with the laminate film 2 in between, and as described above with reference to FIG. The laminate film 2 passes between the laminate roller 4 and the laminate heater 6 together with the base paper in the aligned state, whereby the laminate 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 that produces sufficient adhesive strength.
In this way, a state is obtained in which the protective film 2B is easily peeled off from the two base films, and at the same time, a state is obtained in which the adhesive layer 2C is easily adhered to the base paper.

Such activation of the adhesive layer 2C and the protective film 2B occurs while the adhesive layer 2C, the protective film 2B, and the base paper are passing through the lamination heater 6, and during this time, the dye on the base paper is The molecules are sublimated and dispersed into the base paper and the protective film 2B, and as the adhesive layer 2C, the protective film 2B, and the base paper exit from the downstream side of the laminate heater 6, the temperature increases. When the protective film 2B and adhesive J! cool down rapidly, the protective film 2B and adhesive J! l 2
As C rapidly solidifies, the protective film 2
B is adhered onto the surface of the base paper via the adhesive layer 2C, and the dye molecules dispersed within the base paper and the protective film 2B are solidified and fixed.

Thereafter, the laminate film 2 and the base paper reach a guide roller 8 that constitutes a paper discharge mechanism 7.

The guide roller 8 transports the base film 2A of the laminate film 2 while changing the transport direction in a direction that separates the base film 2A from the paper discharge mechanism 7. At this time, base film 2
A is separated in the direction perpendicular to the base paper, whereas the adhesive M2C is adhered and solidified on the base paper with strong adhesive force, so the adhesive layer 2C of the laminate film 2 and the protective film 2B is peeled off from the base film 2A and remains on the base paper, thus the base film 2
Only A is wound onto the take-up reel 9.

In this way, the base paper separated from the base film 2A is not pinched between the paper discharge rollers 10 and 11 of the paper discharge mechanism 7, but is transported toward the paper discharge port.

The above operation is repeated every time a base paper is inserted into the paper feed mechanism 5, and in the meantime, the next protective film 2B and adhesive layer 2C are formed on the base film 2 with a predetermined interval maintained. is positioned upstream of the laminating roller 4, and is in a state of waiting for the next sheet of paper to be inserted, and thus the laminating operation is automatically repeated each time a sheet of sheet of paper is inserted.

D Problems to be Solved by the Invention By the way, in order to repeat the laminating operation automatically in this way, it is necessary to place the protective film 2 on the base film 2A.
The reason why the protective film 2B and the adhesive layer 2C must be formed at a predetermined interval is that the lamination process is performed on the base paper by one protective film 2B and the adhesive layer 2C, and the paper is not discharged from the paper discharge mechanism 7. This is because the next protective film 2B and adhesive layer 2C must be positioned upstream of the laminating roller 4 at the timing when the paper discharge by the rollers 10 and 11 is completed.

Due to this need, as shown in FIG. 10, it is necessary to form a void 2D on the base film 2A to which the protective film 2B and adhesive layer 2C are not attached in sequence, but in reality, the base film Vacant space 2D over film 2A
It is difficult to form it simply.

One method is to first apply the protective film 2B in the longitudinal direction of the base film 2A while creating voids 2D, and then apply the adhesive layer 2C while creating voids 2D in the same way.
One possible method is to apply it. However, if this method is used, there is a large risk that the protective film 2B and the adhesive layer 2C will not be completely laminated and may shift (this cannot be said to be a practical method).

If the adhesive layer 2C protrudes externally from the protective film 2B due to such misalignment, the protruding adhesive layer 2C may unnecessarily touch the laminating roller 4 when the laminating film 2 passes through the laminating heater 6. This is undesirable because it causes problems such as adhesion.

As a practical method to solve this problem, after applying the protective film 2B over the entire surface of the base film 2A, apply the adhesive layer 2C over the entire surface, and then apply the adhesive layer 2C over the entire surface of the base film 2A, and then This method uses a cutter to cut out the part that is to be removed.

This method can be realized by positioning and controlling the cutter blade at a depth such that it does not cut the base film 2A but can completely cut the adhesive layer 2C and the protective film 2B.

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

The present invention has been made in consideration of the above points, and does not require any of the above-mentioned troublesome efforts, and can easily be used to create a blank space 2D.
The present invention attempts to propose a laminating apparatus that can realize a laminating process that can obtain the same effect as that provided with a laminate.

Means for solving Er, 18 points In order to solve this problem, in the present invention, a laminate film 2 formed by continuously adhering a protective film 2B and an adhesive layer 2C on a base film 2A, and a laminate film 2, Protective film 2B and adhesive layer 2 of film 2
The base paper is heat-treated while being positioned so as to overlap a part of the base paper, and the protective film 2B is bonded onto the surface of the base paper using the adhesive Ji2C. A heater 6 is provided to heat the protective film 2B and the adhesive layer 2C so as to form a fractured part 21 in a state where the parts are adhered.

When the two-action base paper is positioned so as to overlap on the protective film 2B and the adhesive layer 2C and then heated, the protective film 2B is adhered onto the base paper by the adhesive layer 2C, thus producing a laminated finished paper. is obtained.

With the adhesive layer 2C and the protective film 2B adhered to the base paper in this way, if the protective film 2B and the adhesive layer 2C are strongly heated, the protective film 2B and the adhesive N2C in this area will be removed. A fractured portion 21 is generated in which the material is weakened and the tensile strength is extremely deteriorated. Therefore, the protective film 2B and the adhesive layer 2C are attached to the base film 2.
Even if the laminate film 2 is continuously attached to the base paper, it can be cut off from the broken part 21 by the size necessary for laminating the base paper. It is possible to eliminate the need to previously provide a space 2D (FIGS. 1θ and 12) between the protective film 2B and the adhesive layer 20.

As a result, a laminate film that does not require a complicated manufacturing process and is manufactured by a simple process of simply coating the protective film 2B and adhesive layer 2C on the base film 2A can be applied. A laminating device can be easily obtained.

Embodiment G An embodiment of the present invention will be described in detail with reference to FIG. 2, in which parts corresponding to those in FIG. 8 are denoted by the same reference numerals.

In the case of Fig. 2, the laminate film 2 is the same as Fig. 10 and 1.
As shown in FIGS. 3 and 4 corresponding to FIG. 2, the protective film 2B and the adhesive J12C are attached to the base film 2.
The difference is that it is attached continuously over the entire surface within a predetermined width in the longitudinal direction on the surface of A, and there is no void corresponding to the void 2D described above with respect to FIGS. 10 and 12. ing.

In addition, 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 adhesive layer 2C are applied to the base paper in the same manner as described above with respect to FIG. At the time of the lamination process in which the film is bonded through the film, the lamination heat treatment is performed by pressing the laminate heater 6 onto the lamination roller 4 with the laminate film 2 interposed therebetween.

In addition, at the timing when the lamination heat treatment is finished, the laminate heater 6 is heated to a high temperature for a relatively short period of time, thereby strongly heating the protective film 2B of the laminate film 2 and the adhesive M2C, The fracture portion 21 is formed by performing a weakening process to forcibly reduce the tensile strength of the portion that has been subjected to strong heating.

As shown in FIG. 5, the laminate heater 6 has a rectangular ceramic heating head 23 with a temperature detection resistor 22 embedded therein, and a heating head 23 made of metal oxide on the back surface of the heating head 23. A resistor 24 is attached.

This resistor 24 is deposited using, for example, thick film resistor printing techniques and is connected at both ends to a heating power source to generate Joule heat, which is transferred through the thickness of the heating head 23 to its surface. Note that the surface temperature of the heating head 23 is maintained at a predetermined value by controlling the heating source 14 based on the detection output of the temperature detection resistor 22.

The heating head 23 is supported from the back side by a support member 25 made of a heat insulating material, and the surface thereof is covered with the laminate film 2.
The part of the laminate film 2 that is pressed between the heating head 23 and the laminating roller 4 is heated by the heat supplied from the resistor 24. It is designed to be partially heated.

In practice, the thickness of the heating head 23 is selected to be sufficiently small to reduce its temperature capacity, so that the temperature on its surface forms the break 21, whereas during the lamination process it is 200 ['C3C3I]. During processing, the temperature can rise to about 250 ("C) in a short period of time.

In the above configuration, the laminating device performs the lamination process on the base paper according to the following procedure, and laminates the protective film 2B and adhesive layer 2C, which are continuously formed on the base film 2A, into the same size as the base paper. Cutting process (
This is called breaking processing).

First, as shown in No. 111(A), the base film 2A
The tips of the protective film 2B and the adhesive N2C attached to the laminate film 2B are located at a position fP1 upstream from fpo by a predetermined distance @W where the laminate heater 6 and the laminate roller 4 perform the laminate heat treatment on the laminate film 2A. In the combined state, the laminating film 2 and the laminating roller 4 are stopped. Thus, the entire laminating apparatus is in a standby state, waiting for the original paper to be inserted from the separate original paper insertion slot.

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

Eventually, as shown in FIG. 1(D), when the rear end of the base paper comes to a position near the lamination treatment position rIt, PO, the rotation of the lamination roller 4 is stopped and the lamination heater 6 is heated strongly. At this time, a broken part 21 (FIG. 3) of the banding is formed so as to linearly cross the protective film 2B and adhesive layer 2C in the width direction corresponding to the rear end of the base paper.

As shown in FIG. 6, when this fractured part 21 is strongly heated, the temperature of the protective film 2B and the adhesive layer 2C reaches a value T8 exceeding the yield point T1 of the tensile strength. The tensile strength of the broken part is extremely reduced and cannot be recovered (this is called weakening). Therefore, when the protective film 2B and the adhesive jW2c are pulled from both sides of the broken part 21, the tensile strength of the broken part 21 becomes weak. As a result, synthetic resin materials tend to break easily at certain positions.In general, as shown in Figure 6, synthetic resin materials tend to break when heated at a temperature above the yield point T1, according to their past heating history. Therefore, by selecting the heating temperature in FIG. 1(D) to be a temperature T8 exceeding the yield point T, the above-mentioned breaking operation can be realized.

Thereafter, 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 rotates the supply reel 1 in the opposite direction, as shown in FIG. By doing so, the laminate film 2 remaining on the supply reel 1 side from the lamination position PO is rewinded a little. At this time, the protective film 2B and adhesive layer 2C on the take-up reel 9 side from the lamination position PO It is in a state where it is fixed and held by the paper ejection rollers lO and 11 (Fig. 2) in a state where it is adhered to the
The protective film 2B and the adhesive layer 2C on the supply reel 1 side are pulled in the direction away from the broken part 21 from O.
A fracture occurs at the fracture portion 21 thus weakened,
The protective films 2B and 2C are separated from the portions adhered to the base paper.

The amount of unwinding of the supply reel l at this time is such that the tip of the protective film 2B and the adhesive layer 2C on the supply reel 1 side (the broken part 21 remains) is moved from the broken position to the position where it coincides with the initial positioning position pt. The value is selected so that the motor will return to that position, and it will stop when it reaches that position. On the other hand, at this time, the paper ejection roller lO
The raw paper L (to which the protective film 2B is adhered by the adhesive layer 2C) held between the paper sheets L and 11 is ejected from the paper ejection port as finished paper by driving the paper ejection rollers lO and 11. I'm going to be done.

After that, as shown in FIG. 1 (G), the laminate heater 6
is returned to the state in which it is in pressure contact with the laminating roller 4 with the laminating film 2 (only two base films remaining) sandwiched therebetween, and the same standby state as described above with respect to FIG. 1(A) is returned.

In this way, the lamination process for one sheet of base paper is completed, and then when a new base paper is inserted from the base paper insertion slot, the above-mentioned operation is repeated, thereby automatically performing the lamination process.

According to the above-mentioned structure, the laminate film 2 to be attached to the supply reel l is a protective film that is continuous over the entire lengthwise surface of the base film 2A, as described above with reference to FIGS. 3 and 4. 2B and an adhesive layer 2C can be applied, so the laminate film 2
The manufacturing process can be significantly simplified compared to the conventional case.

Therefore, the cost of the laminate film can be further reduced.

In addition, since it is not necessary to attach the protective film 2B and adhesive layer 2C of predetermined dimensions to the base film 2A in advance, it is sufficient to prepare laminated films with common specifications for base papers of various sizes. Thus, the compatibility of the laminate film can be further improved.

In the following description, a case has been described in which a fragile part of a predetermined width is formed in a band shape as the broken part 21 so as to linearly cross the protective film 2B and the adhesive layer 2C in the width direction. The shape of 21 is not limited to a linear shape, and various shapes such as a wavy shape or a jagged shape may be selected.

Moreover, instead of forming the breaking portion 21 continuously in the width direction, it may be formed in a jumping manner, for example, like a perforation. In this 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 semicylindrical ceramic base 31 at predetermined intervals, and each thin film resistor 32 is mounted within a support member 33 that supports the base 31. Heating power is selectively supplied from the integrated circuit.

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

Thereafter, when forming the rupture portion 21, the current applied to the thin film resistor 32 is further increased, so that the protective film 2B and the adhesive layer 2C are weakened in a pattern corresponding to the arrangement pattern of the thin film resistor 32. In this way, the protective film 2B and the adhesive layer 2C can be broken in a so-called perforation shape.

Further, in the above-mentioned embodiment, the broken portion 21 was formed only in the width direction of the base film 2A, but
It may also be formed in the longitudinal direction. In other words, in the case of FIG. 3, the protective film 2B and the adhesive M2C are not attached to both side edge portions of the two base films in the width direction, but instead, the protective film 2B is also attached to these both side edge portions. Then, an adhesive layer 2C is applied, and these side edge portions are cut out when laminating.

In this case, for example, the lamination heater 6 having the configuration described above with reference to FIG. 7 is used, and the border position or both side edges are heated so that both side edge portions in the width direction are left during the lamination process described above with reference to FIG. 1(C). Thin film resistor 32 located at
By passing a stronger current than the thin film resistor 32 in the central part of the base, weakened fractured parts are formed in the longitudinal direction on both side edges while laminating the central part. Both edges of the film 2A in the width direction can be cut off by a break section formed in the longitudinal direction.

H Effects 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 the amount of C that is necessary for the lamination process during the lamination process, it is possible to easily create a laminating device that can use a laminating film that has a much simpler manufacturing process as a laminated film. Obtainable.

[Brief explanation of the drawing]

FIG. 1 is a route map showing the processing steps of the laminating device according to the present invention, FIG. 2 is a route map showing an embodiment of the laminating device according to the present invention, and FIGS. 3 and 4 are explanations of the laminating film 2. 5 is a sectional view showing the detailed configuration of the laminate heater 6, FIG. 6 is a characteristic curve diagram for explaining the weakening treatment of the protective film 2B and the adhesive layer 2C, and FIG. 7 is a plan view and a side view. 8 is a perspective view showing another embodiment of the laminate heater, FIG. 8 is a route diagram showing a conventional laminating device, and FIGS. 9 to 12 are a sectional view, side view, and plan view showing a conventional laminate film. . ■...Supply reel, 2...Laminate film, 2A...Base film, 2B...
...protective film, 2C...adhesive layer,
4... Laminating roller, 6... Laminating heater, 9... Take-up reel, 21...
...Broken part, L...Base paper.

Claims (1)

[Scope of Claims] (a) A laminate film formed by continuously adhering a protective film and an adhesive layer on a base film; (b) a part of the protective film and adhesive layer of the laminate film; (c) a base paper on which the protective film is adhered by the adhesive layer on the surface thereof by heating treatment while the base paper is positioned so as to overlap with the base paper; A laminating apparatus comprising: a heater that applies heat to form a break in the protective film and the adhesive layer when the protective film and the adhesive layer are partially adhered.