JP3425537B2 - Dry laminating equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer section for transferring an adhesive to a base material, a dryer for drying the adhesive transferred to the base material, a base material and a laminate material derived from the dryer. The present invention relates to a dry laminating apparatus including a laminating section for adhering to each other.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
At the outlet of the dryer 4 for drying the adhesive transferred to
A meandering correction roll 31 that corrects the meandering of the base material 2 while guiding the base material 2, and a drive means 11 including a drive cylinder that swings and displaces the meandering correction roll 31 about a pivot 32 is provided. The meandering correction roll 31 is oscillated and displaced by the driving means 11 to correct the meandering of the base material 2.

For example, when the base material 2 passes through the dryer 4, the base material 2 is affected by the wind pressure of the drying air or the like, as shown by the phantom line in FIG. When it meanders, the meandering correction roll 31 is oscillated and displaced in the direction indicated by the arrow to displace one end side of the meandering correction roll 31 to the downstream side in the transport direction of the base material 2 and the other end. By displacing the part side to the same upstream side, the base material 2
Is returned to the normal transport position to correct the meandering.

[0004]

When the meandering correction roll 31 is oscillated and displaced to correct the meandering of the base material 2 as described above, a predetermined tension is applied to the base material 2. At the same time, it is necessary to guide the base material 2 by the meandering correction roll 31 so that the base material 2 can be slid and displaced, but if the tension is large, there is a problem that wrinkles are likely to occur on the base material 2. That is, when the base material 2 is affected by heat when passing through the dryer 4, a part of the base material 2 expands and is separated from the surface of the meandering correction roll 31, and a predetermined tension is applied to this part. The formation of wrinkles was inevitable due to the action.

Therefore, as shown in FIG. 6, the meandering correction roll 31 has an inverted crown shape, and a biasing force acts in a direction of pulling both side portions of the base material 2 outward in accordance with the rotation of the meandering correction roll 31. By doing so, the occurrence of the wrinkles is prevented. Thus, the meandering correction roll 3
When 1 has an inverted crown shape, it is possible to effectively prevent wrinkles from being formed on the base material 2 made of a material that easily expands and contracts.

However, when the meandering correction roll 31 having the inverted crown shape is used as described above, when the base material 2 is formed of a material which is difficult to expand or contract, such as a material for laminating a polyethylene terephthalate film and an aluminum foil, A gap is easily formed between the central portion of the meandering correction roll 31 and the base material 2.
There is a problem that wrinkles are unavoidable to be formed in the central portion of the base material 2 when the base material 2 is transferred to the guide roll arranged on the downstream side.

Further, the surface of the meandering correction roll is formed of a rubber material, and the surface is chemically treated to bring the above base material into close contact with the surface of the meandering correction roll. To prevent wrinkles due to the formation of a gap between the base material and the meandering correction roll by effectively correcting the meandering and reducing the tension acting on the base material. Has also been done.

However, even in the case of the above construction, when the restraining force of the base material decreases due to the deterioration of the rubber material with time, it becomes impossible to properly correct the meandering of the base material, and at the same time during operation. If the hardness of the rubber material is lowered due to a change in the temperature of the roll or the like, there is a problem that the effect of preventing the base material from wrinkling cannot be obtained.

The present invention has been made in view of the above points, and effectively prevents the meandering of the base material while preventing wrinkles from being formed on the base material led out from the dryer. The purpose of the present invention is to provide a dry laminating apparatus that can be used.

[0010]

The invention according to claim 1 is
A transfer unit that transfers the adhesive to the base material, a dryer that dries the adhesive transferred to the base material, a meandering correction unit that corrects the meandering of the base material led out from the dryer, and the meandering correction unit In a dry laminating apparatus including a laminating section for adhering a laminating material to a base material derived from the above, in the meandering correcting section, a peripheral surface section is formed of a hard material having heat resistance, and a center section and both side end sections are formed. A meandering correction roll having a double-helical flat surface formed on the peripheral surface portion, which is composed of a continuous body of a non-convex surface portion and a convex surface portion which are inclined symmetrically toward and away, and the base material is on one end side of the meandering correction roller. Meandering
When one of the meandering correction rolls
In the same direction, and the other end side is the base material.
Fulcrum so that it is displaced upstream in the transport direction
And swinging the meandering correction roll
A drive means for correcting the meandering of the base material is provided, and a meandering correction roll is installed so that the apex portion of the double helical flat surface faces the downstream side in the conveying direction of the base material, and the convex surface of the double helical flat surface. Only the part is formed on a smooth surface having a center line average roughness within the range of 0.3 to 0.5 μmRa.

According to the above construction, the base material taken out from the dryer is guided in a state of being in close contact with the peripheral surface portion of the meandering correction roll, and both side portions of the base material are urged outward. It is possible to prevent wrinkles from being generated on the base material. And
When the meandering occurs on the base material, the meandering correction roll is driven by the driving means to swing and move in a direction for correcting the meandering of the base material, and the meandering correction roll corrects the meandering of the base material. become.

According to a second aspect of the present invention, in the dry laminating apparatus according to the first aspect, at least the peripheral surface portion of the meandering correction roll is formed of a light alloy material.

According to the above construction, the meandering correction roll effectively corrects the meandering of the base material without the peripheral surface portion of the meandering correction roll changing with time or being affected by the temperature change during operation. be able to.

[0014]

FIG. 1 shows an embodiment of a dry laminating apparatus according to the present invention. The dry laminating apparatus includes a transfer unit 3 including a transfer roll that transfers an adhesive to a base material 2 that is formed by laminating a polypropylene film or a polyethylene terephthalate film fed from a first paper feed roll 1 and an aluminum foil.
And a dryer 4 for drying the adhesive transferred to the base material 2.
And a meandering correction part 5 for correcting the meandering of the base material 2 led out from the dryer 4, and a transparent material fed from the second paper feed roll 6 to the base material 2 led out from the meandering correction part 5. A laminating unit 8 for adhering a laminating material 7 made of a film or the like is provided.

As shown in FIG. 2, the meandering correction section 5 includes a meandering correction roll 9 which is a guide roll for guiding the base material 2 drawn out from the dryer 4 downward, and a guide by the meandering correction roll 9. The meandering detection means 10 including an air pressure sensor or a photosensor for detecting the edge position of the base material 2 to be formed, and the driving means 11 including a drive cylinder for oscillating the meandering correction roll 9 with the pivot 32 as a fulcrum. Is provided.

When it is confirmed by the meandering detecting means 10 that the base material 2 is in a meandering state,
Similar to the conventional example shown in FIG. 3, the meandering correction roll 9 is swingably displaced by the driving means 11 with the pivotally supporting portion 32 as a fulcrum, so that the meandering of the base material 2 is corrected.

At least the peripheral surface of the meandering correction roll 9 is made of a heat-resistant hard material made of a light alloy material such as an aluminum alloy or a magnesium alloy. On the peripheral surface of the meandering correction roll 9, as shown in FIGS. 3 and 4, a continuous body of double helical flat planes 12 extending symmetrically from the central portion toward the left and right end portions at a predetermined inclination angle θ is provided. The double helical surface 12 is formed so that the apex portion 13 of the double helical flat surface 12 faces the downstream side of the base material 2 in the transport direction.

The inclination angle θ of the double helical flat surface 12 is set to about 15 °. Further, as shown in FIG. 4, the double helical flat surface 12 is constituted by a continuous body of a non-convex surface portion 12a having a concave or flat cross section and a convex surface portion 12b formed in a convex surface. At the same time, only the convex portion 12b is finished to be a smooth surface. That is, the convex surface portion 12 of the double helical flat surface 12 that constitutes the peripheral surface portion of the meandering correction roll 9
b has a center line average roughness (JIS standard) of 0.3 to
By being set within the range of 0.5 μmRa, a smooth surface is formed. As described above, the non-convex surface portions 12a and the convex surface portions 12b are alternately arranged on the peripheral surface portion of the meandering correction roll 9 and only the convex surface portion 12b is finished to be a smooth surface. It is possible to effectively improve the meandering correction function of the base material 2.

In the above structure, the base material 2 fed from the first paper feed roll 1 is supplied to the transfer section 3 to transfer the adhesive to the base material 2, and then the base material 2 is dried on the dryer 4. The adhesive is dried by introducing it into the inside and blowing hot air for drying on the transfer surface of the adhesive.

Then, the meandering state of the base material 2 led out from the dryer 4 is detected by the meandering detecting means 10 provided in the meandering correction section 5, and it is confirmed that the base material 2 meanders. In this case, the meandering correction roll 9 is oscillated and displaced by the driving means 11 in a direction to correct the meandering of the base material 2. As a result, the base material 2 is conveyed to the laminating unit 8 in a state where the meandering is corrected by the meandering correcting roll 9.

The transfer portion 3 for transferring the adhesive to the base material 2 in this way, the dryer 4 for drying the adhesive transferred to the base material 2, and the meandering of the base material 2 drawn out from the dryer 4. In the dry laminating apparatus provided with the meandering correction part 5 for correcting the above, the peripheral surface part of the meandering correction part 5 is formed of a hard material having heat resistance, and the meandering correction part 5 is bilaterally symmetrical from the center part to both end parts. A meandering correction roll 9 in which a continuous body of double helical flat planes 12 extending in an inclined state is formed on the peripheral surface portion, and when the base material 2 meanders, the meandering correction roll 9 in a direction to correct the meandering of the base material 2. And a drive means 11 for oscillating and displacing the double helical surface 1
Since the meandering correction roll 9 is installed so that the apex portion 13 of the base 2 faces the downstream side of the base material 1 in the transport direction, wrinkles are prevented from being formed on the base material 2 with a simple structure, and the base material 2 is prevented. By closely contacting with the peripheral surface of the meandering correction roll 9, the meandering of the base material 2 can be effectively corrected.

That is, on the peripheral surface of the meandering correction roll 9, a continuous body of double helical flat surfaces 12 extending symmetrically from the central portion toward both end portions is formed, and the double helical flat surface is formed. 12 apex 13
Since the meandering correction roll 9 is installed so as to face the downstream side of the substrate 1 in the conveying direction, the tension acting on the substrate 2 is 3.5 kg.
Even when the value is set to a small value, by bringing the base material 2 into close contact with the double helical flat surface 12,
The base material 2 can be effectively restrained by the meandering correction roll 9 to reliably correct the meandering.

Therefore, the tension acting on the base material 2 is set to a small value as described above, and both side portions of the base material 2 are moved along the double helical flat surface 12 in accordance with the rotation of the meandering correction roll 9. By biasing to the outer side,
While the wrinkles are effectively prevented from being formed on the base material 2, the meandering correction roll 9 can effectively correct the meandering of the base material 2.

An experiment was conducted to correct the meandering of the single layer base material 2 made of an OPP material (biaxially oriented polypropylene film) having a thickness of 20 μm by the meandering correction roll 9 shown in the above embodiment. The experimental data as shown in Test 1 was obtained, and it was confirmed that the meandering can be effectively corrected without causing wrinkles in the base material 2 except when the tension of the base material 2 is set to 2.5 kg. It was The width of the base material 2 was set to 1000 mm.

Similarly, a single-layer substrate 2 made of polypropylene terephthalate having a thickness of 12 μm and a thickness of 12 μm
Base material 2 made of a laminated material of polypropylene terephthalate and aluminum foil having a thickness of 7 μm, and a thickness of 12
An experiment was conducted to correct the meandering of the base material 2 made of a laminated material of a polypropylene terephthalate having a thickness of 7 μm, an aluminum foil having a thickness of 7 μm, and a CPP material (unstretched polypropylene film), and shown in Tests 2 to 4 in Table 1 below. Such experimental data were obtained, and it was confirmed that the meandering of the base material 2 could be corrected almost appropriately.

On the other hand, a base material made of a composite material of polypropylene terephthalate and aluminum foil by means of a meandering correction roll having an outer peripheral portion made of a rubber material, polypropylene terephthalate having a thickness of 12 μm and a thickness of 7 μm.
When an experiment was conducted to correct the meandering of a base material made of a material laminated with an aluminum foil of m, the experimental data as shown in Tests 5 and 6 of Table 1 below were obtained, and the tension or feeding speed of the base material was small. It was confirmed that wrinkles were generated on the base material.

[0027]

[Table 1]

The outer peripheral portion of the meandering correction roll 9 is
Since it is formed of a hard material having heat resistance, the binding force of the base material 2 is lowered due to deterioration over time, or the temperature is changed during use, as in the case where the outer peripheral portion is formed of a rubber material. It was confirmed that the meandering correction roll 9 stably corrects the meandering of the base material 2 for a long period of time without causing a problem such that the generation of wrinkles cannot be prevented.

In particular, when at least the peripheral surface portion of the meandering correction roll 9 is formed of a light alloy material such as an aluminum alloy as shown in the above-mentioned embodiment, it has excellent heat resistance and a predetermined hardness. There is an advantage that the surface portion can be formed relatively inexpensively.

Further, since the center line average roughness in the peripheral surface portion of the meandering correction roll 9 made of a light alloy material such as the above aluminum alloy is set within the range of 0.3 to 05 μmRa to form a smooth surface, the above base material is used. The base material 2 is effectively adhered to the peripheral surface of the meandering correction roll 9 by
Can be reliably restrained and the meandering can be effectively corrected.

The peripheral surface of the meandering correction roll 9 is sprayed with a ceramic material or a carbon fiber reinforced plastic material so that the peripheral surface of the meandering correction roll 9 has predetermined heat resistance and hardness. Good.

[0032]

As described above, the present invention is derived from the transfer section for transferring the adhesive to the base material, the dryer for drying the adhesive transferred to the base material, and the dryer. In a dry laminating apparatus including a meandering correction part for correcting meandering of a base material and a laminating part for adhering a laminating material to the base material derived from the meandering correction part, the meandering correction part has a heat-resistant peripheral surface part. A meandering double-helical flat surface formed of a continuous body of a non-convex surface portion and a convex surface portion, which is formed by a hard material having, and extends symmetrically from the central portion toward both end portions, is formed on the peripheral surface portion. A correction roll and, when the base material meanders, are provided with a drive means for oscillatingly displacing the meandering correction roll in a direction that corrects the meandering of the base material, and the apex portion of the double-helical plane is the base material. Downstream side in the transport direction Since the meandering correction roll is installed so as to face, and only the convex portion of the double helical flat surface is formed as a smooth surface having a center line average roughness within the range of 0.3 to 0.5 μmRa, With the structure, it is possible to prevent wrinkles from being formed on the base material, and to effectively fix the meandering of the base material by effectively adhering the base material to the meandering correction roll on the peripheral surface.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of a dry laminating apparatus according to an embodiment of the present invention.

FIG. 2 is a side view showing a specific configuration of a meandering correction unit.

FIG. 3 is a plan view showing a specific configuration of a meandering correction roll.

FIG. 4 is a cross-sectional view showing a specific configuration of a meandering correction roll.

FIG. 5 is a plan view showing a conventional example of a meandering correction portion.

FIG. 6 is an explanatory diagram showing a conventional example of a meandering correction roll.

[Explanation of symbols]

2 base materials 3 Adhesive transfer part 4 dryer 5 Meandering correction part 7 Laminated material 8 Laminating section 9 Meandering correction roll 11 Drive means 12 double helical plane 12a Non-convex surface part 12b convex part 13 apex

─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-53-99280 (JP, A) JP-A-5-286104 (JP, A) JP-A-8-66962 (JP, A) Actual Kaihei 7- 17531 (JP, U) Japanese Patent Publication 3-52354 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) B29C 65/00-65/82

Claims (2)

(57) [Claims] 1. A transfer section for transferring an adhesive to a base material, a dryer for drying the adhesive transferred to the base material, and a meandering correction section for correcting meandering of the base material led out from the dryer. In the dry laminating apparatus including a laminating section for adhering a laminating material to the base material derived from the meandering correction section, the meandering correction section has a peripheral surface formed of a hard material having heat resistance, and a central portion. Meandering correction roll in which a double helical flat surface formed of a continuous body of a non-convex surface portion and a convex surface portion extending symmetrically from both sides toward both end portions is formed on the peripheral surface portion, and the base material meandering correction roll. One
If it meanders to the end side, one end of this meandering correction roll
Side is displaced to the downstream side in the conveying direction of the substrate, and
Displace the other end to the upstream side in the direction of substrate transport.
Then, the meandering correction roll is oscillated with the pivotal support as a fulcrum.
By providing a drive means for correcting the meandering of the base material , and installing the meandering correction roll so that the apex of the double helical plane faces the downstream side in the conveying direction of the base material, and the double helical Only the convex part of the curved plane,
A dry laminating apparatus having a center line average roughness formed on a smooth surface having a range of 0.3 to 0.5 μmRa. 2. The dry laminating apparatus according to claim 1, wherein at least the peripheral surface portion of the meandering correction roll is formed of a light alloy material.