JP2001328179A - Apparatus and method for laminating film for repairing, apparatus for repairing inner surface resin film of pail can, and pail can - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for laminating a film for repairing capable of repairing a damaged part of a resin film of an inner surface of a pail can in a high quality with a compact facility constitution, the pail can, and an apparatus for repairing an inner surface resin film of the can. SOLUTION: A film 25 for repairing is manufactured form an original film 251 via a cylindrical member 512 and the film for repairing is laminated on a damaged area 23 heated to a temporarily adhering temperature by a sampling laminating member 521 provided in the member. Thus, the apparatus constitution can be simplified. After the film for repairing is laminated, a resin film for repairing and an inner surface resin film 21 of the can are heated at a primary adhering temperature, and hence the damaged inner surface resin film and the resin film for repairing are melted and adhered. Accordingly, the stable repairing of a high quality can be conducted at a low cost, and hence the repaired pail can can be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for repairing a resin film adhered to the inner surface of a pail specified in JIS (Japanese Industrial Standards) Z1620 to the resin film on the inner surface of the pail. Repair film pasting device to be pasted, repair film pasting method performed by the repair film pasting device, pail can repaired with the above repair film, and pail can equipped with the above repair film pasting device The present invention relates to an apparatus for repairing an inner resin film.

[0002]

2. Description of the Related Art In a pail specified in JIS Z1620, it is conceivable to attach a resin film to the inner surface of the pail in order to prevent corrosion of the inner surface of the pail by contents to be stored. As a method for manufacturing such a film-attached pail, a flat steel plate to which the above-mentioned resin film has been applied in advance is formed into a cylindrical shape, and a joining portion serving as a so-called seam portion extending in the axial direction of the cylinder is welded. Then, a method of forming a can body portion, and further winding at least a main plate on which a resin film is stuck to the can body portion to produce a can body can be considered.

The above-mentioned pail can be provided with a hanging handle 2 as shown in FIG. 8 or a handle 7 as shown in FIG.
There is a type provided with. In the case of the pail 1 provided with the hanging hand 2, a mounting bracket 3 called an ear is attached to the outer surface of the pail can body 4 by spot welding in order to support the hanging hand 2. Further, in the case of the pail 6 provided with the handle 7, the mounting bracket 8 for supporting the handle 7 is attached to the outer surface of the top plate 9 of the pail by spot welding.

[0004] Therefore, in some cases, the metal fittings 3 and 8 are welded to the pail body 4 and the top plate 9 with respect to the film-attached pail can made by the above-described manufacturing method. In this case, the metal fittings 3 and 8 are attached to the pail can 4
When welding to the top plate 9, since the welding method is spot welding and does not melt to the inner surface of the can as described above, the inner surface portion of the pail can body 4 and the top plate 9 corresponding to the mounting location is The resin film is not removed.

[0005]

However, although the mounting brackets 3 and 8 can be mounted by spot welding,
The resin film on the inner surface portion corresponding to the mounting portions of the mounting brackets 3 and 8 is melted by the heat of welding to form holes, and there is a problem in the corrosion resistance and the like at the mounting portions of the mounting brackets 3 and 8. Occurs. As a repair method for such a melted portion, for example, a method of applying a liquid paint or a powder paint to the melted portion is considered,
There is a problem that the work efficiency is poor and the cost of the product is increased. Therefore, a method of repairing the resin film on the inner surface of the pail corresponding to the mounting bracket when the mounting bracket is welded to the film-attached pail can not be established at present. The present invention has been made in order to solve such problems, and in a compact facility configuration, with respect to the damaged portion of the resin film on the inner surface of the pail, high quality without causing problems such as corrosion and peeling. A repair film sticking device capable of repairing a resin film on the inner surface of a pail, a repair film sticking method performed by the repair device, a pail can having the repair film stuck thereon, and the repair film sticking device An object of the present invention is to provide an apparatus for repairing a resin film on the inner surface of a pail including:

[0006]

According to a first aspect of the present invention, there is provided a repair film sticking apparatus for repairing a damaged area of a resin film on the inner surface of a can in a pail having a resin film adhered to the inner surface of the can. In the sticking device, for the damaged area on the inner surface of the pail, the original film serving as the source of the repair film is disposed, and the perforated boundary corresponding to the contour of the repair film is attached to the original film. The repair film producing device formed in the, the repair film producing device is provided integrally with the repair film producing device, the repair film is extracted from the original film at the perforation boundary portion and attached to the damaged region, and And a removing and sticking device for performing repair.

[0007] The repairing film manufacturing apparatus further comprises a cylindrical member having a perforated boundary forming portion for forming the perforated boundary portion in the original film at one end and movable in a thickness direction of the original film. The attaching device may also include a removal attaching member that moves in the cylindrical member along the axial direction of the tubular member, extracts the repair film from the original film, and attaches the repair film to the damaged area.

[0008] Further, when the tubular member is moved in the thickness direction to form the perforated boundary portion, the original film is supported between the damaged region on the inner surface of the pail can and the original film. In addition, the apparatus may further include a film support plate having a through-hole which is located corresponding to the damaged area and through which the removal attaching member and the repairing film can penetrate.

The tubular member has a heating section for heating the perforated boundary forming section to a film melting temperature for melting the original film, and the perforated boundary section is supported by the film support plate. The perforated boundary forming part heated to the film melting temperature may be formed in contact with the original film.

The resin film repair apparatus for a pail can inner surface according to a second aspect of the present invention heats the can inner resin film in a damaged area of the can inner resin film to a temporary bonding temperature in a pail in which a resin film is stuck on the inner surface of the can. And a repair film covering the damaged area with respect to the resin film on the inner surface of the can in the damaged area softened at the temporary bonding temperature.
A film adhering device for repair according to any one of items 1 to 4,
A main bonding heating device that heats and fuses the attached resin film for repair to a final bonding temperature higher than the temporary bonding temperature and performs a final fusion to the resin film on the inner surface of the can. I do.

The pail according to the third aspect of the present invention is characterized in that
It was repaired by the pail can inner surface resin film repairing apparatus of the aspect.

[0012] A repair film attaching method according to a fourth aspect of the present invention is directed to the repair film attaching method for repairing a damaged area of the resin film on the inner surface of the can in a pail having a resin film adhered on the inner surface of the can. The original film that is the basis of the film for the film is arranged to face the damaged area on the inner surface of the pail, and the perforated boundary corresponding to the contour of the film for repair is formed by melting the original film, and is melted. While the formed perforated boundary portion is in a molten state, the repair film is extracted from the original film at the perforated boundary portion, and the extracted repair film is attached to the damaged region to form the damaged region. Perform repairs,
It is characterized by the following.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A repairing film sticking apparatus, a repairing film sticking method executed by the repairing film sticking apparatus, and an inner surface of a pail equipped with the above repairing film sticking apparatus, which are embodiments of the present invention. For the resin film repair device, and the pail to which the repair film is attached,
This will be described below with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals. Further, a repair film is stuck by the repair film sticking device, and a pail can be repaired by the pail can inner surface resin film repair device has a resin film 21 on the can inner surface as shown in FIG. This is a pail can previously attached, and here is a pail can 10 corresponding to the pail 1 in which a mounting bracket 3 for mounting the hanging hand 2 shown in FIG. 8 is spot-welded to the outer surface of the can.

As shown in FIG. 7, in a can inner surface resin film 21 affixed to the inner surface of the pail can 10,
As described above, in the portion corresponding to the mounting portion of the mounting bracket 3, five molten portions 22 are melted by the heat of the spot welding when the mounting bracket 3 is fixed. Exists on the circumference corresponding to the outer shape of. In the present embodiment, the above-mentioned five melting portions 22 are used.
Is approximately 30 mm in diameter. In the present embodiment, the pail can 10 having such a molten portion 22 has a size corresponding to the damaged area 23 including all of the five molten portions 22 and has a size corresponding to a repair film. A resin film 25 is produced by a repair film sticking apparatus described later in detail, and the resin film 25 is stuck and then heated and fused to form a resin film 21 on the inner surface of the can.
Perform repairs. Hereinafter, preparation of the resin film 25 for repair, application and repair of the resin film 21 on the inner surface of the can will be described.

The above-described repair is performed by a resin film repair device 60 in a pail as shown in FIG. The resin film repairing device 60 in a pail can includes a repairing film sticking device 50, a heating device 62, a transport driving device 63, and a control device 68. In the present embodiment, the heating device 62 includes a temporary bonding heating device 622 and a final bonding heating device 623. Each of the heating devices 622 and 623 is a pail outer surface portion corresponding to the damaged area 23 from the outer surface side of the pail 10 in order to finally fuse the resin film 21 on the inner surface of the can and the resin film 25 for repair. That is, the mounting bracket 3 and its vicinity are heated. The temporary adhesion heating device 622 is a device that heats at least the damaged region 23 before the repair resin film 25 is attached to the damaged region 23. After the repair resin film 25 is adhered to the heating device 23, the device is heated at the applied portion. In the repairing device 60, any heating device performs heating by hot air, but the heating device is not limited to this, and for example, heating by direct fire, a heater, high-frequency heating, or the like may be performed. Further, in the repair device 60, any heating device performs heating from the outer surface side of the pail can 10, but the heating device is not limited to this, and heats at least the damaged area 23 of the pail can inner surface portion, or Heat may be applied from both inside and outside of the pail.

The temporary bonding heating device 622 heats the damaged area 23 at a temperature of about 140 to 180 ° C. so that the temporary bonding temperature is substantially about 150 ° C. At least about 180 ° C. of the repairing resin film 25 in the damaged area 23, preferably about 180 ° C., so that the repairing resin film 25 and the can inner surface resin film 21 in the damaged area 23 have a substantial heating temperature of about 200 ° C.
Heat in the range of about 210 ° C. The heating temperature is 22
If the temperature exceeds 0 ° C., discoloration or the like is likely to occur in the printing performed on the outer surface of the pail can. The measurement of the temporary bonding temperature and the final bonding temperature was performed by providing a temperature sensor using a thermocouple on the outer surface of the pail can 10, but is not limited to this method. For example, the damage may be measured using a radiation thermometer. The temperature of the region 23 may be measured.

The transport driving device 63 drives a conveyor on which the pail can 10 is mounted by, for example, a motor.
The pail can 10 is carried into the repairing film sticking device 50, and the pail can 10 is transferred from the repairing film sticking device 50.
Out. The control device 65 controls the operation of each of the components described above and executes the method for repairing the resin film on the inner surface of the pail can.

The repairing film sticking apparatus 50 will be described in detail with reference to FIGS. As described above, in the present embodiment, the repair target portion is a portion corresponding to the mounting brackets 3 provided at two places on the outer surface of the pail can 10, and therefore, in the present embodiment, the repair film attaching device 50 includes: As shown in FIG. 1, one pail 10
In addition, two sets of repairing film producing devices 51 and two sets of extracting and sticking devices 52 are provided, and further, each film supporting plate 54 provided corresponding to each repairing film producing device 51 is provided. , Each sampling and pasting device 5
2 and a pail can positioning device 53 provided for each of them. In the present embodiment, each of the above-mentioned repair film production apparatus 51, extraction / pasting apparatus 52, and pail can support apparatus 55 perform the same operation at the same time. FIGS. 3 to 5 show only one of the repairing film manufacturing apparatus 51, the extracting and attaching apparatus 52, the film supporting plate 54, and the pail can supporting apparatus 55. Further, as described above, in this embodiment, two sets of the repair film production apparatus 51, two sets of the extraction and sticking apparatuses 52, two film support plates 54, and two pail can support apparatuses 5 are provided.
5, but the present invention is not limited to this configuration. For each pail 10, one set of a repairing film production device 51, a removing and sticking device 52, one film support plate 54, and one pail can A support device 55 may be provided.

The pail can positioning device 53 repairs the pail 10 placed at the carry-in position 531 with respect to the repair film sticking device 50 by the transport driving device 63 and the carry-in position 531 with the carry-in position 531. And a lifting device 533 whose operation is controlled by the control device 68. When the pail can 10 is raised to the repair film attaching position 532 by the pail can positioning device 53, two sets of the repair film producing device 51, two sets of the extracting and attaching device 52, and the two film support plates 54 are provided. Are arranged inside the pail 10 and correspond to the respective damaged areas 23. In addition, each film support plate 54 is provided with a through-hole 541 which is a perfect circle in the present embodiment and through which a later-described extraction / pasting member 521 and the above-mentioned repair film 25 can penetrate. The film support plate 54 and the repairing film production device 51 are arranged such that the tubular member 512 of the repairing film production device 51 described later is located coaxially. When the pail can 10 is arranged at the repair film attaching position 532, the damaged area 23 and the through hole 541 are arranged correspondingly. Note that the shape of the through hole 514 and the shape of the cylindrical member 512 only need to correspond to each other, and the through hole 514 is not limited to the perfect circular shape in the present embodiment.

The pail can supporting device 55 includes a supporting member 5.
51 and the support member 5 by operation control of the control device 68.
A driving unit 55 for moving the pail 51 in the diameter direction of the pail 10
And when the pail can 10 is disposed at the repair film attaching position 532, the respective support members 5
51 is located corresponding to each of the mounting brackets 3. Then, the driving member 552 causes the support member 551 to contact the mounting bracket 3, so that the supporting member 551 supports the mounting bracket 3 and the periphery thereof from the outer surface of the pail can 10.

The repairing film production apparatus 51 is shown in FIG.
As shown in the figure, the apparatus for forming a perforated fusion portion 253 corresponding to the contour of the repair film 25 in the original film 251 includes a resin film transport device 511 and a cylindrical member 512.
And a tubular member driving device 513. The perforated fusion part 253 corresponds to an example that functions as a perforated boundary. The resin film transport device 511 includes a supply reel 5111 for winding the original film 251 and supplying the original film 251, and a supply reel 511 as shown in FIG.
The original film 251 unwound from the cylindrical member 512
A plurality of transport rollers 5112 arranged to transport between the film and the film support plate 54, and a motor 5114 as a power source, which is driven by the motor 5114 to extract the repair film 25 from the original film 251. Take-up reel 5113 for winding the finished film 252. The original film 2 unwound from the supply reel 5111 by the resin film transport device 511 thus configured.
51 is conveyed in the direction of arrow 5115 shown in FIG.

In the present embodiment, the cylindrical member 512 is made of metal and has a cylindrical shape with an inner diameter of about 45 mm. One end of the cylindrical member 512 has a perforated boundary forming portion for forming the perforated fusion portion 253 in the original film 251. 5121, the outer surface of which has
A heating section 5122 for heating the perforated boundary forming section 5121 to a film melting temperature for melting the original film 251 is provided. In the present embodiment, the heating unit 5122 is configured by a heater, and is provided over substantially the entire length of the tubular member 512 as illustrated. The film melting temperature is such that the perforated fusion portion 253 is quickly and easily formed in the original film 251 to produce the repair film 25 from the original film 251, and the perforated fusion portion 253 is The temperature must be such that the appearance of the contour of the extracted repair film 25 is good. According to the experiments of the applicant, the film melting temperature is preferably about 100 to about 200 ° C. higher than the melting point of the original film 251. In the present embodiment, the melting point of the polyethylene constituting the original film 251 is about 120 to 130. ° C, the heating unit 5122
Temperature is controlled.

Further, the molten state of the original film 251 in the perforated fusion portion 253 affects the appearance of the contour of the repair film 25, so that the perforated boundary formation portion 512
It is preferable that the area of the perforated fusion part 253 heated and melted by the first part is as small as possible, that is, the perforated fusion part 253 is a narrow linear shape. Therefore, as shown in the figure, the perforation boundary forming portion 5121 is formed with an outer diameter dimension φA smaller than the outer diameter dimension of the tubular member 512. In addition, as described above, the cylindrical member 512 and the through hole 541 of the film support plate 54 are coaxially arranged.
In the present embodiment, the inner diameter of the through hole 541 is slightly larger than the outer diameter φA of the perforation boundary forming portion 5121, and is about 0.2 mm larger in the present embodiment. Therefore, in the present embodiment, the perforation boundary forming part 5121 can enter the through hole 541. Note that the magnitude relationship between the through hole 541 and the perforation boundary forming portion 5121 is not limited to the relationship of the present embodiment described above, and may be any shape as long as a later-described extraction / pasting member 521 and the repair film 25 can pass through the through hole 541. .

The tubular member driving device 513 is a device for moving the tubular member 512 along its axial direction between a standby position 5134 and a fusing position 5135. In the present embodiment, which serves as a drive source, An air cylinder 5131, a driving arm 5132 having one end connected to the drive shaft of the air cylinder 5131 and the other end attached to the other end of the cylindrical member 512, an air supply device 5133 for the air cylinder 5131, Having. Air supply device 51
33 is connected to the control device 68, and the operation of the air cylinder 5131 is controlled via the air supply device 5133.

The repair film production apparatus 51 constructed as described above operates as follows. That is, the original film 251 is disposed between the tubular member 512 and the film support plate 54 by the resin film transport device 511 as shown in FIG. Next, after the perforation boundary forming portion 5121 is heated to the film melting temperature by the heating portion 5122, the cylindrical member 512 is moved from the standby position 5134 to the film support plate 54 side by the air cylinder 5131. Therefore, as shown in FIG.
Touches and presses the original film 251, and the pressed original film 251 is applied to the cylindrical member 512 by the film support plate 54.
Is restricted in the moving direction. Therefore, as shown in FIG. 4, when the tubular member 512 is located at the fusing position 5135, the original film 251 is sandwiched between the perforated boundary forming portion 5121 and the film support plate 54 and heated to the above-mentioned film melting temperature. It is melted in the perforated boundary forming part 5121. As a result, the perforated fusion portion 253 is formed in the original film 251 at the perforated boundary forming portion 5121. The diameter of the perforated fusion zone 253 thus formed is substantially equal to the inner diameter of the cylindrical member 512, and is about 45 mm in the present embodiment. Also, the perforation boundary forming part 5121
The molten state of the perforated fusion section 253 by the
51 is a state in which the repair film 25 is completely separated from the repair film 25, or a state in which the repair film 25 is almost melted. It is in a molten state. In addition, when the perforated boundary forming part 5121 forms the perforated fusion part 253 and prepares the repair film 25,
The cylindrical member 512 returns to the standby position 5134 by driving the air cylinder 5131.

Next, the sampling and pasting device 52 will be described. The removing and pasting device 52 applies the repair film 25 corresponding to the inner peripheral side region of the perforation fusion portion 253 formed on the original film 251 by the repair film production device 51 as described above to the perforation fusion portion 253. After the formation of the original film 2
51, when the pail can 10 is disposed at the repair film sticking position 532, the repair film 25 is attached to the damaged area 23. And a removal and attachment member driving device 522 for moving the attachment member. As described above, since the diameter of the perforated fusion portion 253 is approximately 45 mm in the present embodiment, the diameter of the repairing film 25 that is manufactured by extraction is also approximately 45 mm in the present embodiment.

In the present embodiment, the extracting and attaching member driving device 522 serves as a driving source.
A drive arm 5222 having one end connected to the drive shaft of the air cylinder 5221 and the other end attached to the rear end of the extracting and attaching member 521;
And an air supply device 5223. The air supply device 5223 is connected to the control device 68, and the operation of the air cylinder 5221 is controlled via the air supply device 5223.

When the air cylinder 5221 is driven, the extracting and attaching member 521 moves within the tubular member 512 between the standby position 5224 and the attaching position 5225 along the axial direction of the tubular member 512, This is a member for removing the repairing film 25 from the original film 251 and attaching the repairing film 25 that has been removed through the through hole 514 of the film support plate 54 to the damaged area 23 as shown in FIG. The distal end portion of the extraction sticking member 521, that is, the portion that comes into contact with the repair film 25, is attached to the original film 25.
An elastic member 5211 made of, for example, a rubber material or the like, which can hold the repairing film 25 extracted from the portion 1 is provided.
By providing the elastic member 5211, the following effects can be obtained. That is, the elastic member 5211 is attached to the repair film 2.
5, the repair film 25 can be held, and when the repair film 25 is pressed against the damaged area 23, it is crushed and spreads in the diameter direction. Therefore, the elastic member 5211 is attached to the repair film 25 in the diameter direction.
And can cover the entire damaged area 23 and the repair film 25.

In this embodiment, the elastic member 5211
Has a drum-like shape with its central portion inflated as shown. As a result, the repair film 25 held by the elastic member 5211 also swells at its central portion following the elastic member 5211. Therefore, when such a drum-like repair film 25 is stuck to the damaged area 23, the drum-like repair film 25 comes into contact with the can inner surface resin film 21 from the central portion to the peripheral portion of the repair film 25. Entrapment of air between the repair film 25 and the can inner surface resin film 21 can be prevented. After the repair film 25 is attached to the damaged area 23, the extraction and attachment member 521 returns to the standby position 5224 by driving the air cylinder 5221.

As described above, when the pail can 10 is disposed at the repair film sticking position 532, the repair film manufacturing apparatus 51 moves the pail can 10 to the damaged region 23 on the inner surface of the pail can. Support plate 54 and original film 251 that is a source of repair film 25
Are arranged with the interposition. Therefore, the above-mentioned extraction sticking member 52
1 is also arranged facing the damaged area 23. Further, as described above, since the repair film 25 is extracted from the original film 251 and is attached to the damaged area 23, the original film 251 should be a resin film of the same type as the can inner surface resin film 21. A base film made of low-density polyethylene and a film made of linear polyethylene are laminated on one side, that is, a surface in contact with the resin film 21 on the inner surface of the can, so that the film has a thickness of About 80 μm, more preferably about 100 to 150 μm is desirable. In the present embodiment, the original film 251 has a width of 50 m.
m, a polyethylene resin film having a thickness of 120 μm and a melting point of about 120 to 130 ° C.

In order to remove and attach the repair film 25 from the original film 251 by the repair film producing apparatus 51 and the extracting and attaching apparatus 52, the transport of the original film 251 needs to be an intermittent operation. Therefore, the motor 5114 provided in the resin film transport device 511 is desirably a stepping motor, a servomotor or the like capable of controlling the operation.

A method of repairing a resin film in a pail, which is an operation of the apparatus for repairing a resin film in a pail, configured as described above, will be described below. In step 1 (indicated by “S” in the figure) 1 shown in FIG. 6, the pail can 10 placed on the conveyor of the resin film repairing device 60 in the pail can be temporarily heated by the transport driving device 63 for temporary adhesion heating. It is carried into the device 622. After the carry-in, the pail can 10 is subjected to at least the damaged area 2 by the temporary adhesive heating device 622.
3 is heated to a temporary bonding temperature of about 150 ° C. By this heating, at least the inner resin film 21 in the damaged area 23 is softened.

The reason why the damaged area 23 is first heated to the temporary bonding temperature is as follows. That is, since the can inner surface resin film 21 and the repairing resin film 25 are fused to repair the damaged area 23,
A method of heating the damaged area 23 at a stretch to the final bonding temperature and attaching the repairing resin film 25 is also conceivable. However, if this method is adopted, the damaged area 2 of the resin film 21 on the inner surface of the can is considered.
3 is melted, and it is difficult to obtain a desired adhesive strength even when the repairing resin film 25 is attached to the molten resin film 21 on the inner surface of the can. The melting points of the resin film 21 on the inner surface of the can and the resin film 25 for repair are about 120 to 130 ° C. as described above. Therefore, the above 15
If the temporary bonding temperature is about 0 ° C., the resin film 2
One damaged area 23 is softened without melting.

After the heating to the temporary bonding temperature is completed, in step 2, the pail heated to the temporary bonding temperature is carried into the repairing film sticking device 50 by the transport driving device 63. In step 3, the pail can 10 is lifted from the carry-in position 531 to the repair film attaching position 532 and positioned by the pail can positioning device 53.
When the pail can 10 is positioned at the repair film attaching position 532, as described above, the tubular member 512 of the repair film manufacturing apparatus 51, the removal attaching member 521 provided on the tubular member 512, and Film support plate 54
Are arranged corresponding to the damaged area 23. Further, the perforation boundary forming portion 5121 of the cylindrical member 512 heated to the film melting temperature of about 250 ° C. as described above by the heating portion 5122 of the cylindrical member 512 is blown off from the standby position 5134 by the cylindrical member driving device 513. Position 513
5, the perforated boundary forming part 5121 is moved to the original film 25.
1 and is pressed. Original film 251 pressed
The movement of the cylindrical member 512 in the moving direction is restricted by the film support plate 54, and the bending is suppressed. Therefore, the original film 251 is melted at the perforation boundary forming part 5121, the perforated fusion part 253 is formed, and the repair film 25 is manufactured. In the present embodiment, the supplied original film 251 is not heated.

In the next step 4, the extracting and attaching member 521 is moved to the standby position 5224 by the extracting and attaching member driving device 522.
To the pasting position 5225. By this movement, the repair film 25 produced as described above is extracted from the original film 251 and held by the elastic member 5211 attached to the tip of the extraction and attachment member 521. The repair film 25 is attached to the film supporting plate 5 together with the elastic member 5211.
4 through the through-hole 541 and is pressed against the resin film 21 on the inner surface of the can in the damaged area 23 heated to the temporary bonding temperature. At the time of the pressing, the support member 551 of the pail can support device 55 abuts and presses the mounting bracket 3 and the peripheral portion thereof, and balances the pressing force of the extracting and pasting member 521. In the present embodiment, since the diameter of the circle where the molten portion 22 exists is about 30 mm as described above,
The repair resin film 25 cut into a circle having a diameter of about 45 mm can cover the entire damaged area 23.
Further, at the time of pressing, the peripheral portion of the repair film 25 is also pressed by the resin film 21 on the inner surface of the can due to the collapse of the elastic member 5211 as described above.

Since there is a problem in the finished state of the resin film 21 on the inner surface of the can after the repair and the winding of the used film 252 after the removal of the repair film 25, the cylindrical member of the used film 252 and the repair film 25 is formed. It is necessary to avoid melting by the heat of 512. In other words, if the time until the repairing film 25 is applied after the perforated fusion portion 253 is formed and the repairing film 25 is formed is long, the peripheral portion of the repairing film 25 is excessively melted. As a result, a lump or the like of the molten resin occurs. Therefore, when such a repairing film 25 is attached to the resin film 21 on the inner surface of the can, the repairing film 25 becomes stepped at the peripheral portion. Therefore, as soon as the repair film 25 is produced, it is preferable that the cylindrical member 512 returns to the standby position 5134 and the extraction and attachment member 521 moves to the attachment position 5225. Therefore, after the perforation fusion part 253 is formed in the perforation boundary forming part 5121 in Step 3 and the repair film 25 is manufactured, Step 4 is performed.
The time required for the prepared repair film 25 to be attached to the damaged area 23 is preferably about 0.1 second to 2 seconds, and is set to about 0.5 second in the present embodiment. The time varies depending on the material of the original film 251 to be used and the above-mentioned film melting temperature of the perforated boundary forming portion 5121. That is, the film melting temperature and the original film 25
The larger the difference from the melting point of No. 1 is, the more the bonding operation needs to be performed in a shorter time after fusing the original film 251.

Further, by storing the above relationship in the control device 68, the control device 68 obtains an appropriate time based on the material of the original film 251 to be used and the film melting temperature, and the tubular member driving device 513 And it can also be configured to control the operation of the above-mentioned extracting and attaching member driving device 522.

In the present embodiment, the pressing force of the repairing film 25 against the resin film 21 on the inner surface of the can by the extracting and attaching member driving device 522 is about 140 kPa to about 220 kPa.
It is desirable that This is because when the force pressing the repair film 25 is less than about 140 kPa, the elastic member 5211 is insufficiently crushed when pressed,
Attachment of the peripheral portion of the repair film 25 becomes insufficient, and the force for pressing the repair film 25 is about 22
When the pressure exceeds 0 kPa, the resin film 21 on the inner surface of the can
This is because traces due to pressing are generated.

The perforated boundary forming portion 51 of the cylindrical member 512
The film melting temperature in 21 varies depending on the material of the original film, but when the original film 251 is made of polyethylene as in the present embodiment, for example, when it exceeds about 280 ° C., the following inconvenience occurs. Therefore, it is not preferable. That is, in the repaired portion to which the repairing film 25 is attached, there is no pinhole and the appearance of the further attached repairing film 25 is good, but the used film 25 after the repairing film 25 has been removed is good.
The second point is that the perforated portion is melted due to the thermal influence of the perforated boundary forming portion 5121 to cause unevenness,
Of the resin film transfer device 511
Is difficult to take up by the take-up reel 5113, and it is not preferable because a continuous attaching operation cannot be performed.

After the cylindrical member 512 has returned to the standby position 5134 and the repairing film 25 has been applied to the damaged area 23, the removal and attachment member 521 returns to the standby position 5224, and the support member 551 of the pail can support device 55 is also attached. It separates from the metal fitting 3 and returns to the original position. Thereafter, the pail can 10 is moved down from the repairing film sticking position 532 to the carry-in position 531 and positioned by the pail can positioning device 53.

In the next step 5, the transport driving device 63
The conveyor moves, and the pail can 10 is carried out of the repairing film sticking device 50, and the final adhesive heating device 623 is used.
Move to the location of. Then, the area including at least the portion where the repair film 25 is affixed in step 4 is heated to the above-mentioned final bonding temperature by the final adhesive heating device 623, and the repair film 25 and the inner surface of the can in the damaged area 23 are heated. The resin film 21 is melted and fused together. Therefore, the repair resin film 25 is adhered to the resin film 21 on the inner surface of the can with a desired adhesive strength, and even if there is a defect such as a pinhole, these are all repaired. The heating time at the final bonding temperature is as follows:
The time required for the resin film for repair 25 and the resin film 21 on the inner surface of the can to be melted and fused together.
The heating may be stopped immediately after the fusion. Next Step 6
Then, the repaired pail 10 is cooled by natural cooling or forced cooling.

As described above, according to the method for repairing the resin film on the inner surface of the pail using the repairing film sticking apparatus 50 of the present embodiment, the technology for repairing the resin film on the inner surface of the pail corresponding to the mounting bracket is established. Since the repairing resin film 25 is cut and pasted to the damaged area 23 in a short time, a resin film pasting pail of high quality and stable repairing performance can be provided in mass production. In addition, since the polyethylene film is relatively inexpensive, the above-mentioned repair method can be said to be an excellent repair method in terms of cost.

Further, the cylindrical member 512 of the repairing film producing apparatus 51 and the extracting and attaching member 521 of the extracting and attaching apparatus 52 are arranged so as to correspond to the damaged area 23.
At 12, a perforated fusion portion 253 is formed in the original film 251 to form the repair film 25, and then the extraction and attachment member 5 is formed.
At 21, the repair film 25 was extracted from the original film 251 and attached to the damaged area 23. Therefore, the repair film 25 can be manufactured and attached in a state close to the damaged region 23, the equipment configuration can be made compact, and the repair film 25 can be manufactured and applied continuously. .

In the repairing film sticking apparatus 50 described above, the damaged area 2 caused by welding of the fitting 3
One piece of the resin film 25 for repair was attached to 3
It is not limited to this. That is, a configuration in which a plurality of sheets are attached according to the degree of damage can be employed. In addition, the above-mentioned repair film producing apparatus 51 and the extracting and pasting apparatus 52
The technical idea of attaching the repair film 25 to the damaged area 23 by using is not limited to the damaged area 23 caused by the welding of the mounting bracket 3 as a place where the repair film 25 is attached. For example, when the mounting bracket 8 for supporting the handle 7 is attached to the outer surface of the top plate 9 of the pail by spot welding, a resin film on the inner surface of the top plate 9 for mounting the mounting bracket 8 is used. The present invention is also applicable to the case where the repair film 25 is applied to the damaged area of the can, and is not limited to the damage caused by welding, and is applicable to the application of the repair film 25 to the damaged area in the resin film 21 on the inner surface of the can. It is.

In the above embodiment, the original film 251 is made of polyethylene because it is inexpensive and easily available. However, the present invention is not limited to this. For example, polypropylene can be considered.

In the repair film manufacturing apparatus 51 in the above-described embodiment, the cylindrical member 512 is heated to melt the original film 251 to form the perforated fusion portion 253.
Without heating, or in a state where the original film 251 is heated to a temperature at which the original film 251 is softened but cannot be melted, the perforated boundary forming portion 5121 is inserted into the through hole 541 of the film support plate 54.
The repair film 25 can be formed from the original film 251 by a shearing force when the repair film 25 is entered. In this case, the portion of the original film 251 that is sheared by the above-described shear force corresponds to a perforated boundary.

[0047]

As described in detail above, according to the repairing film sticking apparatus of the first aspect of the present invention, a perforated boundary is formed in the original film by the repairing film producing apparatus, and the perforated boundary is formed at the perforated boundary. The repair film was removed from the original film and attached to the damaged area. Therefore, the repair film can be manufactured and attached in a state close to the damaged area, and the equipment configuration can be made compact.

By forming the above-mentioned perforated boundary portion with a tubular member and providing a removal attaching member for attaching the repairing film inside the tubular member, it is possible to reduce the size of the equipment configuration.

Further, by providing a film support plate,
When the repair film is produced, the original film can be prevented from sagging, and the repair film can be produced efficiently.

Further, a heating section is provided on the tubular member, and the original film is melted to form the perforated boundary, whereby
A repair film can be easily produced.

According to the apparatus for repairing a resin film on the inner surface of a pail can according to the second aspect of the present invention, the apparatus for attaching a film for repair of the first aspect, the apparatus for temporary adhesion heating, and the apparatus for permanent adhesion heating are provided. After the damaged area was heated to the temporary bonding temperature to attach the repair resin film to the damaged area, the repair resin film in the damaged area was heated to the final bonding temperature. Therefore, the above-mentioned repair resin film is melted and adhered to the damaged inner resin film, so that high-quality and stable repair can be performed, and problems such as corrosion and peeling are caused on the inner surface of the can corresponding to the mounting bracket. The resin film on the inner surface of the pail can be repaired with high quality without generation of cracks.
Further, the apparatus configuration can be made compact as described above. Further, it is possible to provide a pail in which the above-mentioned high-quality and stable repair is performed.

According to the method for attaching a repair film according to the fourth aspect of the present invention, the repair film can be easily produced by melting the original film to form the perforated boundary. The prepared repair film can be removed from the original film at the perforated boundary and attached to the damaged area.

[Brief description of the drawings]

FIG. 1 is a front view of a repairing film sticking apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of a pail can inner surface resin film repairing apparatus according to an embodiment of the present invention, which includes the repairing film sticking apparatus shown in FIG.

FIG. 3 is a view showing a repair film producing device and a removing and pasting device portion of the repair film pasting device shown in FIG. 1;

FIG. 4 is a view showing a state in which the tubular member shown in FIG. 3 has moved to a melting position.

FIG. 5 is a view showing a state in which the extracting and attaching member shown in FIG. 3 has moved to an attaching position.

FIG. 6 is a flowchart of a repair operation performed by the pail can inner surface resin film repair apparatus shown in FIG. 2;

FIG. 7 is a perspective view showing the concept of the attaching operation of the repair film.

FIG. 8 is a perspective view showing a hanger type pail.

FIG. 9 is a perspective view showing a handle-type pail.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pail can, 3, 8 ... Mounting bracket, 21 ... Resin inner surface resin film, 23 ... Damage area, 25 ... Repair resin film, 51 ... Repair film production device, 52 ... Removal attachment device, 54 ... Film support Board, 251 ... original film, 2
53: Melting part for perforation, 512: cylindrical member, 521: extraction and sticking member, 541: through hole, 5121: perforation boundary forming part, 5122: heating part.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Minoru Nakatsu 894 Sahachi-cho, Ise-shi, Mie Pref. WM03 WM07 WM42

Claims (7)

[Claims] 1. A device for attaching a repair film (25) for repairing a damaged area (23) of the resin film on the inner surface of the pail in a pail with a resin film (21) adhered to the inner surface of the can. A perforated boundary portion (253) corresponding to the contour of the repair film is formed in the original film with the base film (251) serving as the base of the repair film interposed in the damaged region. A repairing film producing device (51), which is provided integrally with the repairing film producing device, removes the repairing film from the original film at the perforated boundary, and affixes the repairing film to the damaged region, A film sticking device for repair, comprising: a sample sticking device (52) for repair. 2. The repairing film production apparatus according to claim 1, wherein the repairing film forming apparatus has a perforated boundary forming portion (5121) at one end for forming the perforated boundary portion in the original film, and has a cylindrical member (512) movable in a thickness direction of the original film. ), Wherein the removing and pasting device moves the inside of the tubular member along the axial direction of the tubular member, removes the repairing film from the original film, and affixes the repairing film to the damaged area (521). 2. The repair film sticking apparatus according to claim 1, comprising: 3. The original film is disposed between the damaged region on the inner surface of the pail can and the original film, and supports the original film when the cylindrical member moves in the thickness direction to form the perforated boundary. And a film support plate (5) having a through hole (541) positioned corresponding to the damaged area and capable of penetrating the removal and attachment member and the repair film.
The repair film sticking apparatus according to claim 2, further comprising (4). 4. The cylindrical member has a heating section (5122) for heating the perforated boundary forming section to a film melting temperature for melting the original film, and the perforated boundary section is formed by the film support plate. The repairing film sticking device according to claim 3, wherein the perforated boundary forming portion heated to the film melting temperature is formed in contact with the supported original film. 5. A temporary bonding heating device for heating a softened resin film on the inner surface of a can in a damaged area (23) of the resin film on the inner surface of the can in a pail with a resin film (21) adhered to the inner surface of the can. An apparatus (622) and a repair film (25) attached to the can inner surface resin film in the damaged area softened at the temporary bonding temperature, covering the damaged area. A repair film sticking apparatus (50) according to any one of (1) and (2), wherein the attached repair resin film is heated to a final bonding temperature higher than the temporary bonding temperature and melted, and the book is completely fused to the can inner resin film. An apparatus for repairing a resin film on the inner surface of a pail can, comprising: a device (623) for bonding and heating. 6. A pail which has been repaired by the apparatus for repairing a resin film on the inner surface of a pail. 7. A method for attaching a repair film (25) for repairing a damaged region (23) of the resin film on the inner surface of the pail in a pail with a resin film (21) attached on the inner surface of the can, comprising: An original film (251) serving as a base is disposed facing the damaged area on the inner surface of the pail, and a perforated boundary (25) corresponding to the contour of the repair film is provided.
3) was formed by fusing the original film, and while the perforated boundary formed by melting was in a molten state, the repairing film was withdrawn from the original film at the perforated boundary, and then withdrawn. A method for attaching a repair film, comprising: attaching the repair film to the damaged area to repair the damaged area.