JPH02292030A - Method of adhering synthetic resin sheet material and apparatus therefor - Google Patents

Abstract

PURPOSE:To apply uniformly an adhesive agent to a paste marginal member, and prevent the adhesive agent from adhering to ruled line part by rotating an adhesive agent supplying roller, and supplying an adhesive agent from an adhesive agent supplying nozzle, and further, sucking and removing the unnecessary adhesive agent remained on the applied surface after transferred to the paste marginal member. CONSTITUTION:An applying roller 4 is supported rotatably by a rotating shaft 5, and the rotational speed of the applying roller 4 is set, for instance, of the order of 200% so that the speed of an applied surface 4a becomes faster than the moving speed of an original sheet 1. The applying roller 4 is equipped with an adhesive agent supplying nozzle 9 for supplying an adhesive agent A to the applied surface 4a and a suction nozzle 10 for sucking and removing the unnecessary adhesive agent on the applied surface 4a. The adhesive agent A is discharged from the adhesive agent supplying nozzle 9 at a certain rate and applied to the applied surface 4a of the applying roller 4, and the adhesive agent A remained on the applied surface 4a after transferred to the paste marginal member 3 of the original sheet 1 is vacuum-sucked by the suction nozzle 10 and removed therefrom. The amount of the adhesive agent A applied to the applied surface 4a of the applying roller 4 is made constant amount supplied from the adhesive agent nozzle 9, as a result, there never occur unevenness of the adhesive agent, and the adhesive agent A is prevented from adhering to a ruled line part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method and apparatus for pasting synthetic resin sheets, and more particularly, to a method and apparatus for pasting synthetic resin sheets, such as polyvinyl chloride (PVC) sheets. The present invention relates to a method for pasting the bonded parts of containers, boxes, etc., formed by folding and to an apparatus suitable for use in the method.

[Conventional technology]

For example, by bending a plastic sheet (synthetic resin sheet-like material) S having the shape shown in FIG. 10, a doll case as shown in FIG. 11 is made. When forming a box-like object B such as a packaging container, a ruled line L for folding is provided on the sheet S, the sheet is bent along the ruled line L, and adhesive is applied to the adhesive strip C formed at the end. It is done by applying and bonding.

Various proposals have been made in the past as means for automatically applying an adhesive to this adhesive strip and attaching it to the main body of a synthetic resin sheet.

For example, in Japanese Patent Application Laid-Open No. 58-24434, an adhesive application roller is provided in an adhesive container, and the adhesive application roller is placed on a moving means consisting of a belt conveyor and sent. A method is described for applying adhesive by rotating and contacting the adhesive strip of a plastic sheet.

Further, Japanese Patent Application Laid-Open No. 60-234832 describes a method of discharging an adhesive from 21 dollars and applying it to an adhesive piece.

[Problem to be solved by the invention]

However, the former method using an adhesive application roller has a problem in that the amount of adhesive applied is different before and after the adhesive strip, making it impossible to obtain a beautifully finished adhesive surface. The reason for this is that since a large amount of adhesive adheres to the roller, the adhesive is pulled by its surface tension and adheres to the edge of the adhesive strip.

In addition, when using the latter 21 dollars, it is fine if the adhesive strip is wide, but if it is narrow, the adhesive will also adhere to the ruled line for bending, and the adhesive solvent etc. Thin parts of ruled lines sometimes became weak.

SUMMARY OF THE INVENTION The present invention provides a method for attaching a synthetic resin sheet, which can uniformly apply an adhesive to a glue strip to obtain a good adhesive surface, and also prevent the adhesive from adhering to the ruled lines. The purpose is to share equipment.

[Means to solve the problem]

In order to achieve the above object, the method for pasting a synthetic resin sheet-like article of the present invention involves moving a synthetic resin sheet-like article provided with an adhesive piece in a plane, and applying an adhesive application roller to the adhesive piece. In a method for attaching a synthetic resin sheet-like article in which an adhesive is applied by pressing, and then the glue margin piece is attached to a main body of a synthetic resin sheet-like article, the adhesive application roller is moved in the direction of movement of the sheet-like article. and supplying adhesive from an adhesive supply nozzle to the application surface of the adhesive application roller to apply it,
After the adhesive on the application surface is transferred and applied to the glue strip, the glue strip is affixed to the main body of the synthetic resin sheet, and the adhesive remains on the applied surface after being transferred to the glue strip. The feature is that unnecessary adhesive is removed by suction using a suction nozzle.

Furthermore, the apparatus for pasting a synthetic resin sheet-like article of the present invention includes a moving means for moving a synthetic resin sheet-like article provided with a glue strip in a plane, and a moving means for moving the synthetic resin sheet-like article provided with a glue strip, and folding the glue strip toward the main body of the synthetic resin sheet-like article. a folding means; an adhesive application means having an adhesive application roller provided with an adhesive supply nozzle for supplying adhesive and a suction nozzle for suctioning unnecessary adhesive; the adhesive application roller and a glue margin; The present invention is characterized by comprising a pressure bonding means for pressing the adhesive strip toward the main body of the synthetic resin sheet material after the pieces come into contact with each other to adhere the adhesive strip to the main body.

[For production]

As described above, the adhesive application roller is rotated, adhesive is supplied from the adhesive supply nozzle, and unnecessary adhesive remaining on the application surface is removed by suction after being transferred to the adhesive strip. An optimum amount of adhesive can be applied to the application roller, and the amount of adhesive applied to the adhesive piece can be kept approximately constant.

Further, by configuring the apparatus as described above, the glue strip to which the adhesive is evenly applied by the above method can be easily and reliably attached to the main body of the synthetic resin sheet.

[Example] Hereinafter, the present invention will be described in further detail based on an example shown in the drawings.

Figures 1 to 3 show an embodiment of the adhesive application means, with Figure 1 being a partially sectional front view, Figure 2 being a side view, and Figure 3 being a side view.
The figure is a plan view. Further, FIGS. 4 and 5 show other embodiments of the adhesive application means, with FIG. 4 being a side view and FIG.
The figure is a front view.

FIG. 6 to FIG. 9 show an embodiment of the pasting device,
Figure 6 is a plan view, Figure 7 is a front view, and Figure 8 is the same as Figure 6.
-■ Cross-sectional enlarged view, and FIG. 9 is also a ■-■ cross-sectional enlarged view.

First, in FIGS. 1 to 3, a synthetic resin sheet-like material (hereinafter referred to as an original sheet) 1 has a predetermined crease in the ruled line portion 2 in a previous process, and a main body 1a is bent in two. In this state, it is conveyed to the adhesive application process by an appropriate planar moving means, such as a belt conveyor. An adhesive application roller (hereinafter referred to as an application roller) 4 that applies adhesive A to the adhesive strip 3 of the original sheet 1 has an application surface 4a on its outer periphery at an angle of the adhesive margin strip 3. It is formed into a conical surface corresponding to . The application surface 4a may be a normal smooth surface, or may be a suitable embossed surface or have grooves formed therein.

The applicator roller 4 is rotatably supported by a rotating shaft 5, and a pulley 6 at the upper end of the rotating shaft 5 is driven by a belt 7 connected to an electric motor, thereby moving the original sheet 1 in the direction of movement. rotate in the same direction.

The rotational speed of the applicator roller 4 is preferably set to about 200%, for example, so that the speed of the applicator 4a is faster than the moving speed of the original sheet 1. If it is less than 150%, it is difficult to obtain sufficient effect.
Conversely, even if the speed is 300% or more, it is not effective and the adhesive A may be applied less often. The rotational speed of the applicator roller 4 can be set to an optimal state depending on the moving speed of the original sheet 1 and the type of adhesive A.

Further, a guide member 8 is provided at a position facing the application roller 4 with the glue allowance piece 3 in between, and is provided to hold the glue allowance piece 3 at a predetermined angle and bring it into contact with the application surface 4a of the application roller 4. ing.

As the guide member 8, in addition to a general plate-shaped guide plate,
Guide rollers and the like can be used as appropriate.

The application roller 4 is provided with an adhesive supply nozzle 9 for supplying adhesive A to the application surface 4a, and a suction nozzle 10 for suctioning and removing unnecessary adhesive from the application surface 4a. Both nozzles 9 and 10 are arranged close to the application surface 4a, and a fixed amount of adhesive A is discharged from the adhesive supply nozzle 9 and applied to the application surface 4a of the application roller 4. Then, after being transferred to the adhesive strip 3 of the original sheet 1, the adhesive A remaining on the application surface 4a is removed by vacuum suction by the suction nozzle 10.

Thereby, the amount of adhesive A applied to the application surface 4a of the application roller 4 can be a constant amount supplied from the adhesive supply nozzle 9. Therefore, it is possible to eliminate unevenness in the adhesive transferred and applied from the application roller 4 to the adhesive strip 3, to obtain a beautiful finished adhesive surface with a predetermined adhesive force, and to adhere to the ruled line portion 2 for folding. It is also possible to prevent agent A from adhering.

Furthermore, by adjusting the rotation speed of the application roller 4 and the amount of adhesive supplied from the adhesive supply nozzle 9, the amount of adhesive A to be applied to the application surface 4a can be changed. The amount of adhesive to be applied depends on the type of original sheet 1 and glue allowance 3.
The amount can be controlled to the optimum amount depending on the size of the adhesive A, the type of adhesive A, etc.

With the adhesive application means configured as described above, a hard PVC sheet (thickness 0.25SV) is used as the original sheet 1, which has a box structure with folding ruled lines 2, adhesive strips 3, etc. At the same time, cyclohexane was used as the adhesive A, and the speed of the application surface 4a of the application roller 4 was set to 200% of the advancing speed (15 m/min) of the adhesive strip 3. As a result, the adhesive A was applied. Adhesive A could be applied to the entire length of replacement piece 3 in a uniform width and thickness. In addition, when the rotation speed of the application roller 4 is reduced and the speed of the application surface 4a is set to 150% or less of the advancing speed of the adhesive strip 3, the amount of adhesive A adhered to the front end of the adhesive margin strip 3 in the advancing direction is reduced. There was a tendency for the adhesive A to be applied thinly on the entire area and more on the rear end, and when it was 3oO% or more, the adhesive A tended to be applied thinly on the entire area.

4 and 5 show the state of the applicator roller 4 when the adhesive strip 3 of the original sheet 1 is in a horizontal state, and the flat cylindrical applicator roller 4 is rotated in the horizontal direction. It is held by shaft 5. In this case as well, the adhesive supply nozzle 9
By adding the suction nozzle 10 and the adhesive nozzle 10, it is possible to uniformly apply the adhesive A to the adhesive strip 3. The adhesive A can also be applied from below the adhesive strip 3, and by changing the width (thickness) of the application roller 4, various width dimensions of the adhesive strip 3 can be accommodated. I can do it.

Next, FIGS. 6 to 9 show an embodiment of the original sheet pasting apparatus of the present invention. Regarding the adhesive application means, see Figures 1 to 3 or Figures 4 and 5 above.
Since it is formed as shown in the figure, detailed illustration and explanation thereof will be omitted.

This pasting device 11 includes a moving means 12 for moving the original sheet 1 in a plane, a folding means 13 for folding the glue allowance piece 3 toward the main body 1a of the original sheet, and the above-mentioned adhesive for supplying an adhesive. The application means 14 presses the adhesive strip 3 after applying the adhesive toward the main body 1a to separate the adhesive strip 3 and the sheet-like article main body 1a.
and crimping means 15 for adhering.

The above-mentioned moving means 12 is configured, for example, by arranging an endless belt 17 on a belt conveyor 16, and moving the original sheet 1 excluding the adhesive portion 3 of the original sheet 1 and the adhesive portion of the main body 1a where the adhesive portion 3 is bonded. The moving means 12 is supported from above and below and moved in a plane, and a normal pre-processing process and a post-processing process can be successively provided before and after this moving means 12.

The folding means 13 abuts from below the glue margin piece 3 protruding from the negative side of the moving means 12, bends the glue margin piece 3 upward from the ruled line portion 2, and gradually folds the glue margin piece 3 upward from the ruled line portion 2, gradually forming the original sheet main body 1a.
The guide plate is bent so as to come into contact with the upper surface of the guide plate, and can be formed by a guide plate having an appropriate twist or a group of appropriate rollers.

Further, the pressure bonding means 15 is disposed in parallel with the moving means 12, following the adhesive application means 14 and the folding means 13 formed as described above. This pressure bonding means 15 is formed by a pair of upper and lower endless belts 18.18 that move the original sheet 1 at the same speed as the moving means 12, and includes a glue strip 3 that is bent and coated with adhesive. The original sheet main body 1a is sandwiched and crimped to adhere both. Further, heating means 19 is provided in the pressure bonding means 15 to heat the glue margin piece 3 and the original sheet main body 1a, thereby making it possible to bond them more reliably. In this case, the endless belt 18 is formed of a material with high thermal conductivity such as a steel belt, and heaters are provided as heating means 19 on both sides of the adjoining parts, so that the heat transmitted through the endless belt 18 is used to It can be formed so that the three portions of the adhesive strip that are sandwiched between the belts 18 and 18 and pressurized are heated.

The moving means 12 and the crimping means 15 can be driven by a known driving means using a drive device such as an appropriate electric motor and a pulley.

By forming the original sheet pasting device 11 in this way, even if the original sheet 1 is uneven or wavy,
The original sheet main body 1a can be reliably clamped and held by the moving means 12, and the end portion of the original sheet main body 1a and the adhesive strip 3 can be reliably stuck to a predetermined position. Further, the adhesive application means 14 as described above can uniformly apply the adhesive to the glue margin piece 3, and then the folding means 1
Since the glue margin piece 3 folded in step 3 and the original sheet main body 1a are crimped by the crimping means 15 to adhere them, a beautiful finished adhesive surface can be obtained. Furthermore, the crimping means 1
If heating means 19 is provided together with 5, more reliable adhesion can be achieved.

〔Effect of the invention〕

As explained above, in the method for pasting synthetic resin sheet-like materials of the present invention, the adhesive application roller is rotated, adhesive is supplied from the adhesive supply nozzle, and unnecessary adhesive is removed by suction. By setting the optimum amount of adhesive to the application surface of the adhesive application roller, the amount of adhesive applied to the adhesive strip can be kept almost constant, resulting in an adhesive surface that is good in both appearance and strength. can be obtained. Further, since the adhesive does not adhere to the ruled line portion, the ruled line portion will not be attacked and weakened by the solvent of the adhesive.

Further, the apparatus for pasting a synthetic resin sheet-like article of the present invention includes a means for moving the original sheet, a means for folding in the adhesive sheet, a means for applying adhesive to the adhesive sheet, and a means for applying the adhesive sheet and the sheet-like article. Since it is equipped with a crimping means for crimping the main body, it is possible to perform the process from applying the adhesive to pasting it consistently, and the original sheet can be held securely, so the above method allows the adhesive to be applied evenly. The attached adhesive strip can be reliably attached to a predetermined position.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the adhesive application means, with Figure 1 being a partially sectional front view, Figure 2 being a side view, and Figure 3 being a side view.
The figure is a plan view. Further, FIGS. 4 and 5 show other embodiments of the adhesive application means, with FIG. 4 being a side view and FIG.
The figure is a front view. FIG. 6 to FIG. 9 show an embodiment of the pasting device,
Figure 6 is a plan view, Figure 7 is a front view, and Figure 8 is the same as Figure 6.
-■ Cross-sectional enlarged view, and FIG. 9 is also a ■-■ cross-sectional enlarged view. Figure 10 is a developed view showing an example of a folding box Kawahara sheet;
FIG. 11 is a perspective view showing the assembled state of the original sheet shown in FIG. 10. 1... Original sheet} 1a... Main body 2... Ruled line portion 3... Glue margin piece 4... Application roller 4a.
... Application surface 9 ... Adhesive supply nozzle 10 ... Suction nozzle 11 ... Pasting device 12 ... Moving means
13... Folding means 14... Adhesive application means 15... Pressing means 19... Heating means
A... Adhesive patent applicant Kohoku Seiko Co., Ltd. Mitsubishi Plastics Co., Ltd. Kisuji 1 Ingishi 2

Claims (1)

[Scope of Claims] 1. While moving a synthetic resin sheet-like article provided with a glue strip in a plane, press an adhesive application roller against the glue strip to apply adhesive, and then apply the adhesive to the glue strip. In a method for attaching a synthetic resin sheet-like article to a main body of a synthetic resin sheet-like article,
The adhesive application roller is rotated in the same direction as the moving direction of the sheet-like object, and the adhesive is supplied from the adhesive supply nozzle to the application surface of the adhesive application roller and applied, and the adhesive is applied to the application surface of the adhesive application roller. After transferring and applying the adhesive onto the glue strip, the glue strip is affixed to the main body of the synthetic resin sheet, and unnecessary adhesive remaining on the applied surface after being transferred to the glue strip is removed. A method for attaching a synthetic resin sheet-like material, characterized in that the material is removed by suction using a suction nozzle. 2. A moving means for moving a synthetic resin sheet-like article provided with a glue margin piece in a plane, a folding means for folding the glue margin piece toward the main body of the synthetic resin sheet-like article, an adhesive supply nozzle for supplying an adhesive, and An adhesive application means having an adhesive application roller provided with a suction nozzle for sucking unnecessary adhesive, and after the adhesive application roller and the adhesive piece come into contact, the adhesive agent is applied to a synthetic resin sheet-like material. 1. An apparatus for pasting a synthetic resin sheet-like article, comprising: a pressure bonding means for pasting a glue strip on a sheet-like body by pressing toward the body.