JP4188137B2 - Air buffer bag manufacturing method and air buffer bag manufacturing apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and an apparatus for manufacturing an air buffer bag that protects various products and parts from impacts.
[0002]
[Prior art]
The air cushioning material is, for example, a two-sheet material such as a plastic film bonded together by a heat sheet, and air is sealed between the sheets (for example, Patent Document 1 below), or a plastic film is formed in a bag shape. In addition, an apparatus in which air is blown into this to inflate it (for example, Patent Document 2) is known.
[0003]
[Patent Document 1]
JP 2002-283443 A [Patent Document 2]
Patent No. 3149130 [0004]
[Problems to be solved by the invention]
A sheet material (film material) bonded together to enclose air between sheets can only form a sheet-like cushioning material, and the range of use is limited. Moreover, it takes time and effort to process such a sheet-like cushioning material into a three-dimensional bag shape. In addition, since such a sheet-like cushioning material has a small amount of enclosed air, the cushioning function is not so large. Moreover, the thing described in patent document 2 requires the process of forming a plastic film in a bag shape, and the process of blowing air in the plastic film formed in the bag shape, and a manufacturing process is complicated.
[0005]
The present invention can simplify the manufacturing process, also aims at buffering function to provide a manufacturing method and a manufacturing apparatus for sufficiently obtained Rue A buffer bag.
[0006]
[Means for Solving the Problems]
An air buffer bag manufacturing method according to the present invention is a method of manufacturing an air buffer bag comprising a plurality of small bag bodies , and is a closed loop intermittently disposed along a predetermined loop line that defines the contour of the air buffer bag. from Jo melting resin discharge port, thereby discharging the melt resin in a closed loop, to supply compressed air to the central portion of the melted resin discharged in a closed loop, the pouch forming step for forming a pouch body, the pouch body A contour forming step of forming a contour of the air buffer bag by supplying compressed air to the sachet formed by the forming step to inflate, fusing and connecting the sachets discharged from the adjacent molten resin discharge ports, and The contour forming step includes a heat sealing step of sealing the base end portion of the small bag body of the air buffer bag. According to this air buffer bag manufacturing method, since a series of steps for manufacturing the air buffer bag can be performed continuously, the air buffer bag can be manufactured in a short time.
[0007]
The air buffer bag manufacturing apparatus of the present invention is an air buffer bag manufacturing apparatus for manufacturing an air buffer bag composed of a plurality of small bag bodies, and includes a resin melting extrusion device and a molten resin extrusion portion of the resin melting extrusion device. A molten resin outlet that is installed and discharges the molten resin in a closed loop shape, a die having a compressed air outlet that blows out compressed air from the center of the molten resin outlet, and supplies the compressed air to the compressed air outlet In the air buffer bag manufacturing apparatus including a compressed air supply mechanism and a heat seal mechanism that appropriately seals a sachet body that is expanded by supplying compressed air discharged from the molten resin discharge port of the die, multiple melting resin discharge port along a predetermined loop line defining the contour of the air impact bag have been intermittently arranged, ejected from the melting resin discharge port, swollen pouch body adjacent Solution fused between the resin discharge port, and a by Ren'nara pouch body discharged from the melting resin discharge ports adjacent, characterized in that the formation of the outer shape of the air impact bag. In this case, the molten resin discharge port of the die is provided with a molten resin discharge port sealing mechanism that seals the molten resin discharge port, and the molten resin discharge port is optionally sealed according to the shape of the air buffer bag to be created. It is good to be able to. As a result, it becomes easy to form air buffer bags of various shapes with one die, and it is easy to change the air buffer bags to be created.
[0008]
The air buffer bag manufactured by the air buffer bag manufacturing method and the air buffer bag manufacturing apparatus of the present invention is a closed loop intermittently disposed along a predetermined loop line that defines the contour of the air buffer bag. of fused resin discharge port, thereby discharging the melt resin in a closed loop, to form a pouch body by supplying compressed air to the central portion of the melted resin discharged in a closed loop, inflated pouch body by means of compressed air, next The pouches discharged from the molten resin discharge ports are fused and connected to form an outline of the air buffer bag, and the base end of the continuous pouches is sealed by heat sealing. Since this air buffer bag is filled with sufficient air in each small bag (air cell), it has a sufficient buffer function. Furthermore, since by Ren'nara pouch body (air cells) to form an air impact bag, it contained goods can be completely covered by the pouch body (air cells). Moreover, since each small bag body (air cell) is independent, even if a pinhole is formed in one small bag body , the function and buffer function which hold | maintain the product of an air buffer bag can be maintained.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
It will be described with reference to manufacturing methods and air impact bag manufacturing equipment of an air impact bag according to an embodiment of the present invention with reference to the drawings.
[0010]
As shown in FIGS. 1A and 1B, the air buffer bag manufacturing apparatus 1 includes a resin melting extrusion apparatus 2 that melts a resin chip and extrudes a molten resin, and a die 3 that is attached to the resin melting extrusion apparatus 2. , and a compressed air supply mechanism 4 to form a pouch body by supplying air to the melting resin discharged from the die 3, the heat sealing mechanism 5 that seals the discharged pouch body.
[0011]
The resin melting extrusion apparatus 2 includes a popper 11 into which resin chips are charged, a melting furnace 12 for melting the resin chips charged from the popper 11, and a screw drive motor 13 for extruding molten resin inside the melting furnace 12. .
[0012]
The melting furnace 12 in the illustrated example includes a heating unit 16 in which a coil is wound around the outer periphery of a cylindrical melting furnace body. The screw drive motor 13 includes a screw (not shown) inserted into the melting furnace 12, a motor 17, and a speed reducer 18 that is attached to a drive shaft of the motor 17 and transmits the rotational driving force of the motor 17 to the screw. I have. According to this resin melting and extruding apparatus 2, the resin chip charged in the popper 11 is melted in the melting furnace 12 and sent from the base end portion of the melting furnace 12 to the front end side by the screw of the screw drive motor 13. . The molten resin melted in the melting furnace 12 is pushed out from the tip of the melting furnace 12.
[0013]
As shown in FIGS. 2A and 2B, the die 3 attached to the tip of the melting furnace 12 has an elongated end face 21 corresponding to the contour of the air buffer bag. The end surface 21 of the die 3 is provided with a molten resin discharge port 22 having a closed loop shape (circular in the illustrated example) intermittently along a predetermined loop line L indicated by a two-dot chain line in the drawing. A compressed air outlet 23 for discharging compressed air is provided at the center of each molten resin outlet 22.
[0014]
A predetermined loop line L provided with the molten resin discharge port 22 of the die 3 shown in FIG. 2B is a virtual line that defines the outer shape of the air buffer bag to be molded. The spacing of the melting resin discharge port 22 provided along the loop line L, in the process step described below, the pouches of the melting resin bulging discharged from the melting resin discharge port 22 adjacent the bag with one another In the maintained state, the distance is set to be fused.
[0015]
The compressed air supply mechanism 4 includes, for example, a compressor 26 and a compressed air supply pipe 27 that supplies compressed air from the compressor 26 to each compressed air outlet 23 of the die 3, and each compressed air outlet of the die 3. 23 can be supplied with compressed air in a timely manner.
[0016]
The heat seal mechanism 5 is provided below the die 3 (in front of the molten resin discharge direction), and seal members 33 and 34 (press sealing members) sandwiching the molten resin discharged from the die 3 from both sides are piston portions. It is comprised by a pair of air cylinders 31 and 32 attached to the front-end | tip. Although illustration is omitted, a feed mechanism for pulling out the air buffer bag heat-sealed by the air cylinders 31, 32 may be provided below the air cylinders 31, 32. For example, the feeding mechanism may be a mechanism that pulls out the air buffer bag with a pair of rollers, and preferably a cushion material is wound around the outer periphery of the roller so as not to break the molded air buffer bag.
[0017]
The resin melting and extruding apparatus 2 of the air buffer bag manufacturing apparatus 1 melts a resin chip put into the popper 11 in a melting furnace 12 and pushes out the melted resin with a screw drive motor 13. The molten resin extruded by the resin melting extrusion device 2 is discharged from the molten resin discharge port 22 of the die 3.
[0018]
Next, a process of forming an air buffer bag suitable for housing a notebook computer using the air buffer bag manufacturing apparatus 1 will be described.
[0019]
When molding an air buffer bag for storing a notebook computer, molding is performed by sealing the molten resin discharge port 22a located at the end of the die 3, as shown in FIG.
[0020]
In a preparation stage before entering the molding process, a predetermined amount of the molten resin is discharged, and the front end of the molten resin is heat-sealed by the heat seal mechanism 5.
[0021]
In the main forming step, as shown in FIG. 4, while the compressed air is blown out from the compressed air outlet 23 of the die 3 by the compressed air supply mechanism 4, the molten resin is discharged from the molten resin discharge port 22 of the die 3 by the resin melting extruder 2. Extrude from. At this time, by supplying compressed air from the compressed air outlet 23 to the central portion of the molten resin discharge port 22, the molten resin discharged from the molten resin discharge port 22 is expanded in the discharge direction to form the pouch body 41.
[0022]
Next, the air buffer bag manufacturing apparatus continues to supply the compressed air from the compressed air outlet 23 to the pouch body of the molten resin while discharging the molten resin from the molten resin outlet 22, and discharges from each molten resin outlet 22. The small bag body 41 is elongated in the discharge direction and is grown thick. And the small resin body 41 of the molten resin discharged from the adjacent molten resin discharge port 22 is made to contact, the small bag body 41 is melt | fused with a residual heat, and the small bag body 41 continues and the outline of the air buffer bag 40 is formed. .
[0023]
Next, the discharge of the molten resin is continued in a state where the small bag body 41 discharged from the adjacent molten resin discharge port 22 is fused. When the small bag body 41 discharged from the molten resin discharge port 22 has a predetermined length, the base end portion of the small bag body 41 is heat sealed by the heat seal mechanism 5.
[0024]
As a result, as shown in FIG. 5A, a position corresponding to the molten resin discharge port 22 located at the end of the sealed die 3 is opened, and the periphery is surrounded by a small bag body 41 (air cell) of the molten resin. The air buffer bag 40 can be formed. As shown in FIG. 5 (b), the air buffer bag 40 can accommodate the notebook computer 42 from the opened end. According to the air buffer bag 40, the notebook type personal computer 42 can be protected from impact because the notebook type personal computer 42 accommodated is surrounded by a small bag 41 (air cell) of molten resin.
[0025]
As described above, the air buffer bag suitable for storing the notebook type personal computer is illustrated and the apparatus and the manufacturing method for manufacturing the air buffer bag have been described. The shape and size of the air buffer bag can be changed by selectively changing the molten resin discharge port to be sealed among the outlets 22 and adjusting the timing for performing heat sealing.
[0026]
For example, as shown in FIG. 6A, when a predetermined number of molten resin discharge ports 22a are sealed from one end and molded, an air buffer bag shallower than the above embodiment can be formed. Further, as shown in FIG. 6B, when a predetermined number of upper molten resin discharge ports 22a on one end side are sealed, the lower molten resin discharge port 22b on one end side becomes a lid portion covering the opening. An air buffer bag with a lid can be formed. Moreover, as shown in FIG.6 (c), if the center molten resin discharge port 22a is sealed and shape | molded, the air buffer bag which the center opened can be shape | molded. Moreover, as shown in FIG.6 (d), if the molten resin discharge port 22a of both ends is sealed and shape | molded, the sleeve-shaped air buffer bag which both ends opened can be shape | molded.
[0027]
Further, as shown in FIG. 7 (a), when the molten resin discharge port 22a at the center is intermittently sealed and molded, as shown in FIG. 7 (b), the resin is discharged from the other molten resin discharge ports at the center. An independent pouch body 52 (air cell) that is not connected to the pouch body 51 can be formed. As shown in FIG. 7C, for example, the air buffer bag 50 molded in this manner accommodates the notebook computer 42, and the accessory 43 of the notebook computer 42 is independent of the outer surface of the air buffer bag 50. And can be held between the small bag body 52.
[0028]
Thus, the shape of the air buffer bag can be arbitrarily changed by selectively changing the molten resin discharge port 22 to be sealed.
[0029]
Further, if the timing for heat sealing is lengthened, the pouch body 41 extends in the discharge direction in accordance with the discharge speed of the molten resin discharged from the molten resin discharge port 22, and the width of the air buffer bag is accordingly increased. . Therefore, it is possible to easily change the size of the air buffer bag according to the size of the product to be stored.
[0030]
As mentioned above, although one embodiment of the manufacturing method of the air buffer bag, the air buffer bag manufacturing apparatus, and the air buffer bag has been described, the present invention is not limited to the above embodiment.
[0031]
For example, the dice of the air buffer bag manufacturing apparatus is not limited to the above embodiment. For example, when the die 3 ′ shown in FIG. 8A is used to seal and mold the molten resin discharge port 22a at one end, an air buffer bag having a shape in which three bags are integrated can be formed. Further, as shown in FIG. 8 (b), it is possible to form a three-stage air buffer bag having an opening at the center by sealing and molding the two molten resin discharge ports 22a at the center. Further, as shown in FIG. 8C, when the molten resin discharge ports 22a at both ends are sealed and molded, an air buffer bag in which sleeve-like bags having both ends opened can be integrated.
[0032]
Moreover, since the shape of the air buffer bag to be molded can be changed by selectively sealing each molten resin discharge port 22 of the die in this way, a plurality of molten resin discharge ports are formed in advance on the end surface of the die. 22 and a compressed air outlet 23 are formed, and a mechanism (molten resin discharge port) that can selectively seal each molten resin discharge port 22 of the die according to the shape of the air buffer bag to be created. An exit sealing mechanism) may be provided separately. As a result, it becomes easy to form air buffer bags of various shapes with one die, and it is easy to change the air buffer bags to be created. For the convenience of the operator, the molten resin discharge port sealing mechanism for sealing the molten resin discharge port may be provided with a control mechanism that can operate and control the sealing of the molten resin discharge port by an electric circuit or a mechanical mechanism. [0033]
Next, the heat seal mechanism 5 is illustrated as having a pair of air cylinders 31 and 32 in which a sealing member (pressing sealing member) sandwiching the molten resin from both sides is attached to the tip of the piston portion. In this case, when a soft material such as silicon rubber is used for one seal member and pressed against the other seal member, the one seal member abuts against the other seal member and deforms to ensure the molten resin It is good to be able to seal without a gap. In addition, the pair of seal members may have a structure in which one seal member is a convex shape and the other seal member is a concave shape into which one seal member is fitted to be sealed at two locations. Further, a cut blade may be provided in the center of the seal member so that perforation is made at the same time as sealing, or the air buffer bags may be cut one by one at the same time as sealing. In addition, when using a pair of air cylinders 31 and 32 for a heat seal mechanism, it is preferable to attach the roller which pulls out an air buffer bag.
[0034]
The heat seal mechanism 5 includes a pair of pinch rollers 61 and 62 provided so as to sandwich the molten resin from both sides, as shown in FIGS. 9A and 9B, instead of the pair of air cylinders 31 and 32. It may be used. The pinch rollers 61 and 62 in the illustrated example are provided with a plurality (four) of pressing members 63 around the rollers at equal intervals, and each of them is driven to rotate at a constant speed by obtaining a driving force from a motor 64 via a belt 65. The molten resin is heat-sealed with the pressing member 63 sandwiching the molten resin at a predetermined timing according to the rotation speed.
[0035]
According to the heat sealing mechanism 5 using the pinch rollers 61 and 62, the molten resin can be heat sealed while the molten resin is pulled out by the pinch rollers 61 and 62. Therefore, it is suitable for continuously forming the air buffer bag. . Further, according to the heat seal mechanism 5 using the pinch rollers 61 and 62, continuous molding can be performed while the molten resin is pulled out by the pinch rollers 61 and 62, so there is no need to attach a roller for pulling out the air buffer bag separately.
[0036]
As mentioned above, although the modification of the heat seal mechanism was demonstrated, the heat seal mechanism of this invention should just be a mechanism which can heat-seal molten resin at a predetermined timing, and is not limited to said embodiment.
[0037]
【The invention's effect】
According to the air buffer bag manufacturing method and the air buffer bag manufacturing apparatus according to the present invention, the closed loop shape from the closed loop melted resin discharge port disposed intermittently along a predetermined loop line that defines the outline of the bag. the compressed air is supplied to the central portion of the discharged melted resin to form a pouch body manufactures air impact bag was heat sealed by Ren'nara pouch body adjacent. For this reason, since a series of processes which manufacture an air buffer bag can be performed continuously, an air buffer bag can be manufactured in a short time. Further, since the molten resin is discharged from the closed loop-shaped molten resin discharge port intermittently disposed along a predetermined loop line that defines the outline of the bag, the air buffer bag is formed, so that the conventional resin sheet ( Compared to an air cushioning material using a film), it is possible to easily manufacture a bag according to the shape of the product to be stored.
[0038]
Further, the air buffer bag manufactured in this manner has a sufficient buffering function because each small bag body is filled with sufficient air. In addition, since the bags are formed by connecting the sachets , the contents can be completely covered with the sachets . Furthermore, since each sachet is independent, even if a pinhole is formed in one sachet, the function of holding the product of the air buffer bag and the cushioning function can be maintained.
[Brief description of the drawings]
FIG. 1 (a) is a front view of an air cushion bag manufacturing apparatus according to an embodiment of the present invention, and FIG. 1 (b) is a side view thereof.
2A is a front view of a die used in an air cushion bag manufacturing apparatus according to an embodiment of the present invention, and FIG. 2B is a bottom view thereof.
FIG. 3 is a bottom view showing a usage state of a die used in an air cushion bag manufacturing apparatus according to an embodiment of the present invention.
FIG. 4 is a front view of a die showing a state in which molten resin is discharged from the die of the air buffer bag manufacturing apparatus according to the embodiment of the present invention.
5A is a perspective view showing an air buffer bag manufactured by the air buffer bag manufacturing apparatus of the present invention, and FIG. 5B is a perspective view showing a use state thereof.
FIGS. 6A to 6D are bottom views of dies showing modified examples of the use state of the dies, respectively. FIGS.
FIG. 7A is a bottom view of a die showing a modified example of the die and its usage, and FIG. 7B is a longitudinal sectional view of an air buffer bag manufactured using the die of FIG. (C) is a longitudinal cross-sectional view which shows the use condition of the air buffer bag of (b).
FIG. 8A is a bottom view of a die showing a modified example of the die and a use state thereof, and FIG. 8B is a bottom view of the die showing a modified example of the use state of the die of FIG. c) is a bottom view of a die showing a modification of the usage state of the die of (a).
9A is a front view of an air buffer bag manufacturing apparatus showing a modification of the heat seal mechanism, and FIG. 9B is a side view of the air buffer bag manufacturing apparatus of FIG. 9A.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Air buffer bag manufacturing apparatus 2 Resin melt-extrusion apparatus 3 Dies 4 Compressed air supply mechanism 5 Heat seal mechanism 11 Popper 12 Melting furnace 13 Screw drive electric motor 16 Heat generating part 17 Motor 18 Decelerator 21 End face 22 of dice Molten resin discharge port 22a Sealing Compressed air outlet 26 Compressed air outlet 26 Compressor 27 Compressed air supply piping 31, 32 Air cylinders 33, 34 Press member 41 Small bag body 40, 50 Air buffer bag 42 Notebook computer 52 Independent small bag body 61, 62 Pinch Roller 63 Pressing member 64 Motor 65 Belt

Claims (3)

A method of manufacturing an air buffer bag comprising a plurality of small bags,
The molten resin is discharged in a closed loop shape from a closed loop-shaped molten resin discharge port intermittently disposed along a predetermined loop line that defines the outline of the air buffer bag, and the center of the molten resin discharged in the closed loop shape supplying compressed air to the part, and the pouch forming step for forming a pouch body,
Contoured to form said inflated pouch forming process by supplying the compressed air to the pouch body formed by causes Ren'nara by fusing the pouch body discharged from the melting resin discharge port adjacent to the contour of the air impact bag Process,
In the contour forming step, a method for producing an air buffer bag, comprising: a heat sealing step of sealing a proximal end portion of a small bag body of the air buffer bag. An air buffer bag manufacturing apparatus for manufacturing an air buffer bag comprising a plurality of small bag bodies,
A resin melting extrusion device;
A die provided with a molten resin discharge port that discharges the molten resin in a closed loop shape, and a compressed air outlet that blows out compressed air from the central portion of the molten resin discharge port, installed in the molten resin extrusion portion of the resin melting extrusion device,
A compressed air supply mechanism for supplying compressed air to the compressed air outlet;
In the air buffer bag manufacturing apparatus including a heat seal mechanism that appropriately seals the sachet that is discharged from the molten resin discharge port of the die and inflated by supplying compressed air,
A plurality of molten resin discharge ports are intermittently arranged on the die along a predetermined loop line that defines the outline of the air buffer bag, and the swelled small bag body is adjacent to the molten resin discharge port. An apparatus for producing an air buffer bag, wherein the outer shape of an air buffer bag is formed by fusing between molten resin discharge ports and connecting small bag bodies discharged from adjacent molten resin discharge ports.   The molten resin discharge port of the die is equipped with a molten resin discharge port sealing mechanism for sealing the molten resin discharge port, and the molten resin discharge port can be arbitrarily sealed according to the shape of the air buffer bag to be created. The air buffer bag manufacturing apparatus according to claim 2, wherein the air buffer bag manufacturing apparatus can be used.

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