JP2010280098A - Sleeve sticking device and sticking method - Google Patents

Abstract

A film is sealed to a sleeve so as not to cause wrinkles or air residues.
A sleeve sticking apparatus includes a primary sealer mechanism and a secondary sealer mechanism in order in the film transport direction. The primary sealer mechanism 12 is provided with primary sealers 24A and 24B that can be opened and closed on the front surface and the back surface of a sleeve sandwiched between folded band-like films f. Each sealer 24A, 24B seals the film f only to the central area of the front and back of the sleeve with the primary heaters 30A, 30B. The secondary sealers 44A and 44B provided in the secondary sealer mechanism 13 are provided with secondary heater portions 45A and 45B for sealing the rectangular frame region excluding the central region on the front and back surfaces of the sleeve and the side regions on both sides thereof. Only the central region of the sleeve and the film is sealed with the primary heater portion, and then the square frame region and the side region are sealed with the secondary heater portion. The air vapor | steam means 50 blows off the water vapor | steam of a sleeve, or the vapor | steam of a sealing agent from the film after sealing.
[Selection] Figure 5

Description

  The present invention relates to a sleeve sticking apparatus and sticking method for a package or the like in which a film as a packaging material is heat-sealed to a sleeve.

Conventionally, for example, a sleeve is provided as a substantially cylindrical reinforcing material or molding material on the inside of the package, and a film is provided as a packaging material on the outside. The sleeve and the film are welded, the sleeve is three-dimensionalized, and the film is formed into the sleeve. Some of them have produced box-shaped packages by folding and welding along.
As such a package and a manufacturing method thereof, for example, a package described in Patent Document 1 has been proposed. This packaging body is composed of a packaging material film that forms a packaging material, and the sleeve is also composed of a thick film, and the packaging material is composed of an upper edge and a lower edge or a width direction edge with respect to the sleeve made of the thick film. I was sticking a film.
In such a package, since the sleeve and the packaging film are of the same type of material, the thermal shrinkage rate is the same or similar when both are heat-sealed, and therefore the packaging film is wrinkled by the difference in thermal shrinkage rate. There will be no malfunctions.
On the other hand, a relatively inexpensive and rigid material such as paper is used as the sleeve, and this is covered with a film as a packaging material and integrally sealed with heat to produce a package.

JP 2004-175408 A

However, in the package described in Patent Document 1, in order to manufacture the sleeve with the film material, the sleeve is required to have a thickness and rigidity higher than those of the packaging material film, and there is a problem that the cost is increased.
Also, when different materials such as paper are used for the sleeve for the film, the heat shrinkage rate of the film and the sleeve may be different when the two are heat-sealed. There was a problem that the appearance was not good. Further, during heat sealing, air is trapped between the sleeve and the film, and there is a risk that fine air protrusions remain on the surface of the film or wrinkles are generated.
Further, when the contents stored in such a package is a hygroscopic material such as tea leaves, for example, if moisture evaporates from the sleeve during heat sealing, moisture vapor contained in the paper sleeve is absorbed. There was a problem that contents such as tea leaves deteriorated.

  In view of such circumstances, the present invention provides a sleeve sticking device and a sticking method capable of sealing a film to a sleeve so that wrinkles are not generated in the film to be sealed with the sleeve and air does not remain inside. The purpose is to do.

A sleeve sticking apparatus according to the present invention is a sleeve sticking apparatus in which a film is stacked on the outer periphery of a sleeve having a predetermined shape and the film is heat-sealed on almost the entire front and back surfaces of the sleeve, and a sealer sandwiching the film and the sleeve is provided. The sealer is characterized in that the film and the sleeve are heat-sealed from one side of the sleeve to the other side or from the inside to the outside.
According to the sleeve sticking device of the present invention, the film and the sleeve are heat-sealed from one side of the sleeve to the other side or from the inside to the outside by the sealer in a state where the film is overlapped on the front and back surfaces of the sleeve. Thus, air can be pushed out without staying between the sleeve and the film, and wrinkles can be prevented and surface sealing can be performed.

Moreover, it is preferable that the sealer is not provided at the bent portion of the sleeve.
When the film is heat-sealed to the sleeve by the sealer, since the sealer is not provided at the folded portion of the sleeve, the film is not sealed at the folded portion of the sleeve, so that the film is not pulled and distorted when the sleeve is folded.

Moreover, it is preferable that the sealer has a swingable surface shake countermeasure means.
Even if other members such as sleeves and fasteners are provided on the inner side of the film, and the sealer comes into contact with the surface, the surface of the film and the sleeve can be brought into surface contact by swinging the sealer by means of surface vibration countermeasures. The surface can be reliably sealed.
Further, the surface shake handling means may be capable of swinging the sealer in directions orthogonal to each other.
As a result, when heat-sealing with a pair of sealers sandwiching the sleeve and film, even if surface wobbling occurs due to other articles such as sleeves and fasteners, surface sealing can be ensured from both sides.

The sealer has a pair of primary sealers that heat-seal the central region of the front and back surfaces of the sleeve, and a pair of secondary sealers that heat-seal the entire region including the outer region or the central region except the central region. Is preferred.
Accordingly, the sleeve is formed by heat-sealing the central region of the front surface of the sleeve covered with the film by the primary sealer and then heat-sealing the entire region including the outer region or the central region except the central region previously sealed by the secondary sealer. Since the seal can be advanced from the central region to the outer region of the front surface of the film, the air inside the film can be pushed out and the film can be prevented from wrinkling.

Moreover, you may provide the air blowing means which blows air between the surface of the film which covers the front surface of the sleeve which heat-sealed the sleeve with the primary sealer and the secondary sealer, and the back surface of the film which covers the back surface of the sleeve.
When the sleeve is heat-sealed with a film, even if water vapor is generated from the sleeve, it can be blown out of the film by the air blowing means, so that water vapor does not remain inside, and the contents, sleeve and film Deterioration can be reliably prevented.
Moreover, you may provide the recessed part which forms a non-seal part in the side surface of a box-shaped package in a primary sealer or a secondary sealer, bend | fold and weld the overhang | projection part of the top flap of a box-shaped package to this non-seal part Thus, it is possible to reliably fix the overhanging portion by welding.

The sleeve sticking method according to the present invention is a sleeve sticking method in which a film is stacked on the outer periphery of a sleeve having a predetermined shape, and the film is heat-sealed on almost the entire front and back surfaces of the sleeve by a sealer. A step of inserting the sleeve between the folded belt-like films, and the film covering the front and back surfaces of the sleeve with the sealer, the film and the sleeve from one side to the other side of the film and the sleeve and from the inside to the outside. And a heat sealing step.
According to the method of applying a sleeve according to the present invention, a sleeve is inserted between strip-shaped films folded in the longitudinal direction, and then the film covering the front and back surfaces of the sleeve is sealed with a sealer on one side of the front and back surfaces of the film and sleeve. Heat seal the film and sleeve from one side to the other or from the inside to the outside. Thus, there is no possibility that air remains between the film and the sleeve, and air can be pushed out from one side to the other side or from the inside to the outside, and the film is not wrinkled.

According to the sleeve sticking device and the sticking method according to the present invention, when the film is heat-sealed to the sleeve, air can be pushed out of the film by the sealer, and fine wrinkles are not generated, so that the sticking by the heat seal can be performed neatly. The quality of pasted objects such as packaging is high. Moreover, the structure of the sleeve affixing device is simple and easy to adjust, and can reliably perform surface sealing, resulting in a high yield rate.
Also, the sleeve sticking device has a simple structure, is easy to manufacture, is easy to adjust, and is easy to maintain.

It is the schematic of the bag making machine of the box-shaped package by embodiment of this invention. It is a perspective view of a box-shaped package. It is a perspective view which shows the box-shaped package body in the step before bending a top flap. It is a front view of the sleeve sticking apparatus in a bag making machine. It is the sectional view on the AA line which shows the primary sealer and secondary sealer of the sleeve sticking apparatus in FIG. It is an enlarged view of the primary sealer in FIG. (A), (b) is a figure which shows the heater of a primary sealer, (c), (d) is a figure which shows the heater of a secondary sealer. It is an expanded view of the film surface-sealed in order with a primary sealer and a secondary sealer. It is a perspective view of a sleeve. It is a front view before the assembly of the heat-sealed film.

Hereinafter, a sleeve sticking device in a box-shaped packaging machine according to an embodiment of the present invention will be described with reference to FIGS.
A bag making machine 1 for a package shown in FIG. 1 produces a box-shaped package F as shown in FIG.
Prior to the description of the bag making machine 1 for the package F, the box-shaped package F will be described with reference to FIG. In FIG. 2, for example, a box-shaped package F that accommodates a plurality of triangular pyramid or quadrangular pyramid shaped tea bags containing tea leaves has a substantially rectangular parallelepiped shape. On the inner surface of the package F, for example, a paper sleeve 2 formed in a square tube shape and opened at the upper and lower surfaces is disposed as a reinforcing material, and a film f formed in a substantially square tube shape on the outer peripheral surface thereof. Is bonded to each surface of the sleeve 2 by a heat seal.
In the present embodiment, the sleeve 2 has a substantially rectangular tube shape, but is not limited thereto, and may be an inner member for three-dimensionally reinforcing and molding the film f.

In FIG. 2, the manufactured package F is formed of a front surface 3A, a back surface 3B, both side surfaces 3C, 3C, an upper surface 3D, and a bottom surface 3E. Here, the front surface 3A is a surface that is a good-looking front in the display of patterns, designs, and the like when the package F is manufactured. Similarly, the front surface of the sleeve 2 integrated with the film f and the heat seal is the same as the front surface. It is a surface. The back surface 3B is a surface on the back side that faces the front surface 3A when the package F is manufactured, and the same applies to the sleeve 2.
In FIG. 3, the upper surface 3D of the package F is provided with folding margins 3a and 3a on both sides of the top flap 3d before folding. From the state of FIG. 3, after folding the folding margin 3a into the side faces 3C, 3C of the package F and heat-sealing to the non-seal part m, m of the film f, the bag making process is completed by folding the bottom flap, A box-shaped package F shown in FIG. 2 is manufactured.
In such a package F, it is necessary to adhere the film f to the sleeve 2 almost entirely and integrate it.

Next, the bag making machine 1 for the box-shaped package F shown in FIG. 1 will be described. The bag making machine 1 unwinds the belt-shaped film f from the film roll 6 and unwinds it in the longitudinal direction. The fastener 4 is fed from the fastener roll 7 during the film f feeding process. The fastener 4 is affixed to both sides sandwiching a portion that becomes a crease at the center in the width direction of the surface that becomes the inner side when the male portion 4a and the female portion 4b are separated in the middle and the film f is folded in half. It is done. The film f is folded in two at the center fold in the width direction, and the male portion 4a and the female portion 4b of the fastener 4 are fitted in the vicinity of the fold.
A sleeve laminate 8 in which, for example, rectangular sheet-like sleeves 2 are laminated for each box-like package F is provided in the vicinity of the conveyance path of the folded film f. One sleeve 2 taken out from the sleeve laminate 8 is folded upward from both sides and inserted into the folded film F as a folded shape. The sleeve 2 inserted into the film f is temporarily attached at the temporary attachment portion 9 by a temporary attachment sealer (not shown) in the vicinity of the fastener 4.
A sleeve sticking device 11 in the present embodiment is disposed in the conveying direction of the film f following the tacking unit 9. Further, on the downstream side in the transport direction, a vertical seal portion, a top seal portion, a cutting portion, a molding turret portion, a filling portion, a bottom seal portion, and the like (not shown) are disposed.

4 and 5, the primary sealer mechanism 12 and the secondary sealer mechanism 13 are arranged along the direction in which the folded film f is conveyed. Since these sealer mechanisms 12 and 13 are substantially the same mechanism, the drive mechanism will be described as a representative of the primary sealer mechanism 12.
In the primary sealer mechanism 12 shown in FIG. 4, a fixed frame 15 having a substantially rectangular frame shape is connected to the frames 14 a and 14 b of the bag making machine 1 in a front view. A pair of shafts 18, 19 are slidably disposed through the pair of bearings 16 a, 16 b and 17 a, 17 b fixed to both sides of the fixed frame 15, and both end portions of the shafts 18, 19 are arranged. Are connected by the first movable frame 20 and the second movable frame 21 to form a square frame. A square frame composed of the shafts 18 and 19 and the first and second movable frames 20 and 21 can reciprocate in the longitudinal direction of the shafts 18 and 19 through the bearings 16a and 16b and 17a and 17b of the fixed frame 15. .

A primary sealer 24A is attached to the central portion of the first movable frame 20 via a connecting member 23A. In addition, bearings 26 and 27 slidable relative to the shafts 18 and 19 are provided inside the fixed frame 15, and these bearings 26 and 27 are connected by a support frame 28. Therefore, the support frame 28 is slidable along the shafts 18 and 19.
A primary sealer 24B is attached to the support frame 28 via a connecting member 23B so as to face the primary sealer 24A.
Each primary sealer 24A, 24B is attached at a position where the first heater portions 30A, 30B that heat-seal the film f only at the front and back central portions of the sleeve 2 are opposed to each other (FIGS. 7A, 7B). )reference).
Further, a first cylinder 32A and a second cylinder 32B are attached to both sides of a fixed plate 15a provided on the side of the fixed frame 15 away from the primary sealer 24A. In the first cylinder 32A, the second movable frame 21 is connected to the rod 33, and in the second cylinder 32B, the support frame 28 is connected to the rod 33.

A guide plate 34 is provided upstream of the primary sealer mechanism 12 and downstream of the secondary sealer mechanism 13 to support the film f. A guide rod 34a is provided above the guide plate 34 to prevent the film F from flickering and maintain a folded state. Primary sealers 24A and 24B are arranged opposite to each other on the upper and lower sides of the film f supported by the guide plate 34, and the primary sealers 24A and 24B are slid in a direction approaching each other by pushing out the cylinders 32A and 32B. It moves and abuts against the film f, and only the front and back center portions of the film f are heated and sealed with the first heater portions 30A and 30B (see FIGS. 7A and 7B).
Further, a plurality of coil springs 36 are stretched as elastic members between the fixed plate 15a and the second movable frame 21 to prevent the primary sealer 23A from dropping due to its tensile force. It prevents the air from running out and coming into contact with the film f.

Further, the surface run-out countermeasure mechanisms 25A and 25B are provided on the connecting members 23A and 23B connected to the primary sealers 24A and 24B, respectively, so that they can swing. The surface shake handling mechanism 25A, 25B will be described with reference to the surface shake handling mechanism 25B shown in FIG. 38 is inserted and connected in a direction perpendicular to the support frame 28, and the primary sealer 24B is swingably supported by the shaft 38 via a holder. Therefore, the primary sealer 24B can swing in the C direction about the shaft 38.
Adjustment bolts 39 are engaged with the support frame 28 on both sides of the shaft 38. Each adjustment bolt 39 has an elastic member 40 at the upper end, and a fixing nut 41 is attached to the lower end. The height of each adjustment bolt 39 can be adjusted by loosening the fixing nut 41. These constitute the adjusting member 42. A primary sealer 24B is provided at a position facing the elastic member 40 with a slight gap L therebetween. Therefore, the primary sealer 24B can be swung in the C direction about the shaft 38, and the swing range thereof is adjusted to the gap L (for example, L = 0.5 mm) and the deformation range of the elastic member 40 by the adjusting members 42 and 42. Limited.

  The primary surface sealer 24A facing the primary sealer 24B is also provided with the same surface runout countermeasure mechanism 25A, but each member is arranged in a direction orthogonal to the surface runout correspondence mechanism 25B of the primary sealer 24B. Therefore, the same reference numerals are used for the same members and the description thereof is omitted. The surface shake countermeasure mechanism 25 provided in the primary sealer 24A can swing around the shaft 38 in the direction D perpendicular to the swing direction C around the shaft 38 in the primary sealer 24B.

In FIG. 5, a secondary sealer mechanism 13 is disposed downstream of the primary sealer mechanism 12 in the transport direction of the film f. The configuration of the secondary sealer mechanism 13 is substantially the same as the configuration of the primary sealer mechanism 12 described above, and the same components are denoted by the same reference numerals and description thereof is omitted.
As a difference, in the secondary sealer mechanism 13, secondary sealers 44 </ b> A and 44 </ b> B are arranged to face the primary movable frame 20 and the support frame 28 in place of the primary sealers 24 </ b> A and 24 </ b> B. The secondary sealers 44A and 44B are provided with secondary heater portions 45A and 45B that heat-seal the folded film f sandwiching the sleeve 2 at opposite positions.
These secondary heater portions 45A and 45B have front and back square frame regions 45Aa and 45Ba excluding the central region of the primary heater portions 30A and 30B and side surface regions 45Ab and 45Bb on both sides thereof (FIG. 7 ( c) and (d)).

In particular, the secondary heater portion 45A is provided with a recess 46 for forming a non-seal portion m in each side region 45Ab (see FIG. 7 (c)), whereby a box-shaped package F as shown in FIG. At the time of assembling, the folding margin 3a can be folded into the side surface 3C and welded to the non-seal portion m. A concave groove 47 for forming non-sealed portions n and n is also provided between the square frame region 45Aa and the side surface regions 45Ab and 45Ab. Since the folded ends of the sleeve 2 are positioned between the square frame region 45Aa and the other side surface region 45Ab, the concave groove 47 for forming the non-seal portion n is not provided.
In FIG. 7D, the secondary heater portion 45B is also provided with a groove 47 that forms a non-seal portion n between the square frame region 45Ba and the side surface regions 45Bb and 45Bb on both sides thereof.

  In FIG. 5, a guide plate 34 and a guide rod 34 a are provided further downstream of the guide plate 34 downstream of the secondary sealer mechanism 13. An air blowing means 50 for blowing air into the film f folded in two between the two guide plates 34 downstream of the secondary sealer mechanism 13 is inserted. Water vapor is generated from the paper-made sleeve 2 by heat-sealing the sleeve 2, and in this case, the water vapor generated in the film f by the air blowing means 50 is discharged outside by blowing air. It has become.

The sleeve sticking device 11 in the bag making machine 1 for the box-shaped package F according to the present embodiment has the above-described configuration. Next, a sleeve sticking method for the film f for the box-shaped package F is shown in FIGS. Description will be made mainly with reference to FIG.
In the bag making machine 1 for the box-shaped package F shown in FIG. 1, the belt-shaped film f is fed out from the film roll 6, and the fastener 4 is fed out from the fastener roll 7 in the middle of the film f feeding process. The fastener 4 separates the mated male part 4a and female part 4b in the middle, and is located near both sides sandwiching a fold for bi-folding at the approximate center in the width direction of the inner surface when the film f is folded in half. A male part 4a and a female part 4b are pasted along the crease.
The film f is folded in two at the center fold in the width direction, and the male portion 4a and the female portion 4b of the fastener 4 are fitted in the vicinity of the fold.

  Next, a sleeve laminate 8 in which a paper sleeve 2 is laminated is provided in the vicinity of the conveyance path of the folded film f. One sleeve 2 in the lowermost layer is taken out and folded upward from both sides in the longitudinal direction to form the folded shape shown in FIG. The sleeve 2 is inserted into the folded film f for each section of the box-shaped package F, and temporarily fixed to the film f by the tacking portion 9. In this state, the continuous film f is intermittently conveyed to the sleeve sticking device 11.

In the sleeve sticking device 11 shown in FIGS. 4 to 7, first, in the primary sealer mechanism 12, one section of the folded film f for one package F is stationary between the primary sealers 24A and 24B which are spaced apart and opposed to each other. Be made. In FIG. 4, the film f may have either the front surface 3A or the back surface 3B of the package F facing upward, that is, facing the primary sealer 24A, but here the back surface 3B is facing the primary sealer 24A, that is, facing upward. To do.
In this state, when the pair of cylinders 32A and 32B are pushed out, the rods 33 and 33 protrude outward. When one of the cylinders 32B is operated, the support frame 28 is pushed through the rod 33, so that the primary sealer 24B is guided by the shafts 18 and 19 and slides to move to the front surface side (front surface 3A side) of the film f. At the same time, when the cylinder 32A is actuated, the shafts 18 and 19 are guided by the bearings 16a, 16b, 17a and 17b to slide so as to push the second movable frame 21 away from the fixed frame 15 via the rod 33. Then, the first movable frame 20 is moved in the direction of the fixed frame 15. Thereby, the primary sealer 24A connected to the first movable frame 20 by the connecting member 23A moves to the back surface side (the back surface 3B side) of the film f.

In this state, heat sealing is performed by the primary heaters 30A and 30B shown in FIGS. 7A and 7B of the primary sealers 24A and 24B sandwiching the film f. As a result, as shown in FIG. 8A, the film f in the central region p on the back surface and the front surface of the sleeve 2 is welded (indicated by hatching in the drawing). When the cylinders 32A and 32B are pulled in after the film f has been sealed by the primary heaters 30A and 30B, the first sealers 24A and 24B are moved away from the film f by being pulled by the rods 33.
Note that the film f shown in FIG. 8 is originally sealed in a state in which the film f is folded in half and the sleeve 2 is sandwiched as shown in FIG. The state which was heat-sealed by the sleeve 2 in the expanded state is shown. FIG. 8A shows a process in which the central region p of the film f is heated and sealed to the sleeve 2 by the primary sealer mechanism 12, and FIG. 8B shows the process of the central region p of the film f by the secondary sealer mechanism 13. The process of heat-sealing the rectangular frame region q and the side regions r, r to the sleeve 2 is shown.

Next, the film f is conveyed from the primary sealer mechanism 12 to the secondary sealer mechanism 13 and stopped. Even in this state, the same operation as the primary sealer mechanism 12 is performed. That is, in the secondary sealer mechanism 13, the pair of cylinders 32A and 32B are pushed out, and the rods 33 and 33 are projected.
Thereby, the support frame 28 is guided by the shafts 18 and 19 and moves to the guide plate 34 side, and the secondary sealer 44B moves to the front side (front surface 3A side) of the film f. At the same time, the second movable frame 21 is guided by the bearings 16a, 16b, 17a, and 17b and moves away from the fixed frame 15. Therefore, the first movable frame 20 moves in the direction of the guide plate 34 and becomes secondary. The sealer 44A moves to the back side (the back side 3B side) of the film f. Thereby, the secondary sealers 44A and 44B are brought into contact with each other with the film f interposed therebetween.

In this state, as shown in FIGS. 7C and 7D, heat sealing is performed by the secondary heater portions 45A and 45B of the secondary sealers 44A and 44B sandwiching the film f, and the sleeve is shown in FIG. 8B. The film f is welded to the portion excluding the center region p on the front surface and the rear surface of 2 (indicated by hatching in the figure). That is, on the front and back sides of the film f folded in half with the sleeve 2 interposed, the secondary sealers 45A and 45B have the film f applied to the square frame region q excluding the central region p of the sleeve 2 at the square frame portions 45Aa and 45Ba. The film f is welded to the side regions r and r on both sides in the side regions 45Ab and 45Bb.
Here, on the back surface of the film f, the non-sealed portions m and m are left in the side surface regions r and r by the concave portions 46 of the side surface region 45Bb of the secondary heater unit 45B. Further, non-sealed portions n and n are provided between the rectangular frame region q and the side surface regions r and r on both sides on the front surface of the sleeve 2 by a concave groove 47, and the rectangular frame region q and one side surface are also provided on the back surface of the film. A non-seal portion n is provided between the region r and the concave groove 47.

When the film f sandwiching the sleeve 2 with the primary sealers 24A and 24B is heat-sealed, the primary sealers 24A and 24B with respect to the film f are shaken by the sleeve 2 and the fastener 4 provided in the film f and face the film f. There may be no contact. In such a case, each primary sealer 24A, 24B is provided with the surface deflection countermeasure mechanism 25, so that it can swing a small angle around the shaft 38 in the range of a small gap L. In addition, since the swing direction D of the primary sealer 24A and the swing direction C of the other primary sealer 24B are perpendicular to each other in the horizontal plane, they are brought into surface contact with each other across the film f so that both surfaces are entirely Each primary sealer 24A, 24B can be adjusted by minute angular surface runout so as to be heat-sealed.
Similarly, the secondary sealers 44A and 44B are respectively provided with surface run-off countermeasure mechanisms 25 and 25 that can swing in directions orthogonal to each other, and in the same manner, are in surface contact with each other with the film f interposed therebetween to heat both surfaces as a whole. Each secondary sealer 44A, 44B can be finely adjusted to seal.

The front and back surfaces of the film f thus obtained are welded to the sleeve 2 in the central region p and the square frame region q as shown in FIG. 8B, and are also welded to the side regions r and r on both sides. The FIG. 10 shows the film f and the sleeve 2 in a normal state where they are folded.
When the cylinders 32A and 32B are retracted after the film f is sealed by the secondary heaters 45A and 45B, the secondary sealers 44A and 44B are moved away from the film f by being pulled by the rods 33.
Next, the film f welded to the sleeve 2 is transported to the next process, supported between the guide plates 34, 34, and the both ends of the film f1 section being pressed by the guide rods 34a, 34a, as shown in FIG. As described above, the air blowing means 50 is inserted into the film f to blow air. When the sleeve 2 and the film f are heat-sealed by the primary and secondary sealers 24A, 24B, 44A, 44B, water vapor generated from the paper sleeve 2 or the like can be blown off by air.
Thereafter, the film f is subjected to processes such as vertical sealing, assembling into a top seal and packaging F, filling of contents, bottom sealing, etc., and then the film f is used with the sleeve 2 as a reinforcing material as shown in FIGS. When the upper and lower upper surfaces 3D and 3E of the sleeve 2 are folded, a box-shaped package F is formed.

As described above, according to the sleeve sticking device 11 of the bag making machine 1 according to the present embodiment, when the film f is heat-sealed on the front surface and the back surface of the sleeve 2, the central region p on the front surface and the back surface of the sleeve 2 is sealed first. Then, since the rectangular frame region q and the side surface regions r, r outside the central region p are heat-sealed, the surface sealing can be sequentially performed from the inside to the outside of the front surface and the back surface. Therefore, air is not confined on the welding surface of the sleeve 2 and the film f, and the film f is not wrinkled, so that the film surface is clean and the packaging quality is high. Further, since the sealing surfaces of the sleeve 2 and the film f are not sealed twice, even if a material that cannot be heat-sealed twice is adopted, the film f and the sleeve 2 cured by the first seal are not treated twice. It is possible to prevent a seal failure from occurring when sealing.
In addition, since water vapor generated from the sleeve 2 by the heat seal after the primary and secondary seals and the vapor of the sealant are blown out to the outside by the air blowing means 50, water droplets due to water vapor do not remain in the packaging bag F, and the contents Can be prevented, and the quality of the product can be kept high.

In addition, the primary and secondary sealers 24A, 24B, 44A, and 44B can surely seal the surface of the sleeve 2 and the film f, so that the sleeve 2 and the film f expand and contract integrally by heat, and the film f is not wrinkled. Good product rate is high.
In addition, the folded portion of the front surface and the back surface and the side surface of the sleeve 2 is an unsealed portion n and is not sealed with the film f, so that the film f is not pulled and distorted when the sleeve 2 is folded. Moreover, since the non-sealed portions m and m are provided on the both side surfaces 3C and 3C of the packaging bag F, the protruding portion 3a of the top flap 3d on the upper surface 3D can be bent to the side surface 3C and welded by the non-sealed portions m and m.
Further, since the primary and secondary sealers 24A, 24B, 44A, and 44B are provided with the surface deflection support mechanism 25, the heater portions 30A, 30B, 45A, and 45B are subject to surface vibration by the sleeve 2 and the fastener 4 in the film f. Even if it occurs, the angle can be adjusted so that it automatically swings and comes into surface contact with each other.

In the above-described embodiment, when the front and back surfaces of the sleeve 2 are face-sealed with the film f, the central region p is face-sealed with the primary sealers 24A and 24B, and then the secondary sealers 44A and 44B surround the central region p. However, the present invention is not limited to such a configuration, and other methods can be used as long as heat sealing can be performed so that no air remains between the sleeve 2 and the film f. It may be adopted.
For example, a film f sandwiching the sleeve 2 is sandwiched by a pair of sealers, and one or both sealers are formed by, for example, arcuate heaters or rotary heaters, and are directed from one end side to the other end side of the front and back surfaces of the sleeve 2. If it is configured so as to be heat-sealed, it is possible to prevent air from remaining inside the film f or generating wrinkles. In this case, only one set of sealers may be provided.
Furthermore, in this embodiment, since the width of the side surface of the package F is short, only the front surface and the back surface are sealed in two stages. However, when the width of the side surface of the package F is wide, the side surface is also sealed in two stages. May be.

In addition, the sleeve 2 and the film f used in the above-described embodiment are ones in which the sealant of the sleeve 2 is melted and extended by the first heat seal, and it is difficult to weld even if it is heat sealed again. If the sealable material is used, a heater can be provided on the entire surface of the secondary sealers 44A and 44B without using a heater in the square frame region 45a having a hollow inside in the secondary heater portions 45A and 45B.
In addition, although the above-mentioned embodiment etc. demonstrated the box-shaped package F, this invention is not limited to the box-shaped package F, If it is a sticking apparatus which heat-seals the film f to the sleeve 2, The present invention can be employed in a sleeve sticking device for appropriate members other than differently shaped packaging bodies F and packaging bodies F.

In addition, you may attach a heat resistant rubber to the surface which touches the film f about each heater 30A, 30B, 45A, 45B etc., and thereby, the surface sealing of the film f and the sleeve 2 can be performed more reliably.
In the above embodiment, the air blowing means 50 is provided immediately downstream of the secondary sealers 44A and 44B. However, a cooling means such as a cooling plate is provided between the secondary sealers 44A and 44B and the air blowing means 50. May be. Thereby, the sealed film f may be cooled to ensure sealing adhesion of the film f, and then air may be blown.

DESCRIPTION OF SYMBOLS 1 Bag making machine 2 Sleeve 4 Fastener 11 Sleeve sticking apparatus 12 Primary sealer mechanism 13 Secondary sealer mechanism 15 Fixed frame 20 First movable frame 21 Second movable frames 24A and 24B Primary sealer 25 Surface runout corresponding mechanism 30A and 30B Primary heater part 32A, 32B Cylinders 44A, 44B Secondary sealers 45A, 45B Secondary heater 45a Square frame region 45b Side region 46 Concave portion 47 Concave groove 50 Air blowing means f Film F Package p Central region q Square frame region r Side region m, n Non-seal part

Claims (7)

A sleeve affixing device formed by stacking a film on the outer periphery of a sleeve having a predetermined shape and heat-sealing the film on almost the entire front and back surfaces of the sleeve,
A sealer for sandwiching the film and the sleeve, the sealer heat-sealing the film and the sleeve from one side of the sleeve to the other side or from the inside to the outside.   The sleeve sticking device according to claim 1, wherein the sealer is not provided in a bent portion of the sleeve.   The sleeve sticking device according to claim 1 or 2, wherein the sealer has a swingable surface runout countermeasure means.   The sleeve sticking device according to claim 3, wherein the surface runout countermeasure means can swing the sealer in directions orthogonal to each other.   The sealer includes a pair of primary sealers that heat-seal the central region of the front and back surfaces of the sleeve, and a pair of secondary sealers that heat-seal the entire region including the outer region or the central region excluding the central region. The sleeve sticking device according to any one of claims 1 to 4, characterized in that:   The sleeve sticking device according to claim 4 or 5, further comprising an air blowing means for blowing air between a front surface and a back surface of a film in which the sleeve is heated and sealed with the primary sealer and the secondary sealer. A sleeve affixing method in which a film is stacked on the outer periphery of a sleeve having a predetermined shape, and the film is heat-sealed on almost the entire front and back surfaces of the sleeve by a sealer,
Inserting the sleeve between strip-like films folded in the longitudinal direction;
Heat sealing the film and the sleeve covering the front and back surfaces of the sleeve from one side to the other side of the front and back surfaces of the film and the sleeve, or from the inside to the outside, using a sealer. Sleeve affixing method.

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