HK1081925B - Method and system for producing shock absorbing package containing packaged article - Google Patents

Description

Method and apparatus for manufacturing cushioning packaging body into which packaged article is put

Technical Field

The present invention relates to a cushion packaging body in which a packaged article is placed, a method of manufacturing the same, and an apparatus for manufacturing the same.

Background

Conventionally, in order to package an object to be packaged which needs to be protected, such as an electric product and a machine component, a cushion package body in which the object is packaged by a cushion plate which can be filled with air has been widely used.

For example, a cushioning package 101 shown in fig. 12 is disclosed in japanese utility model registration No. 3009233. An article storage space 103 is provided so as to be sandwiched by buffer plates made of a plurality of small bubbles 102, and an article to be packed 104 disposed in the article storage space 103 is protected by the small bubbles 102 filled with air.

However, the above-described cushion packaging body 101 is packaged by filling air into the small bubbles 102 after the packaged object 104 is stored, and since the manufacture of the cushion packaging body 101 itself, the storage of the packaged object 104, and the filling of air into the small bubbles 102 cannot be performed simultaneously, a complicated process is required for manufacturing the cushion packaging body in which the packaged object is placed.

Disclosure of Invention

The invention provides a cushion packaging body which can simultaneously carry out the manufacture of the cushion packaging body, the accommodation of the packaged object and the filling of air and is put into the packaged object, a manufacturing method and a manufacturing device thereof.

In order to solve the above problem, a first aspect of the present invention provides a method of manufacturing a cushioning package body into which an object to be packed is inserted, the method including: a first step of forming a cushion plate 1 having small bubbles 11 extending in a width direction of the plate and having an inlet 11a for filling air at least at one end by stacking and heat-sealing long soft resin plates 10 continuously conveyed in a longitudinal direction; a second step of folding the cushion plate 1 so that the cushion plate 1 is folded with a fold line 1b intersecting the extending direction of the small bubble 11 and the small bubble 11 is intersected with the extending direction of the small bubble 11 to form an article housing space 1c surrounded by the small bubble 11, and bonding an end portion of the cushion plate 1 which is overlapped by the folding except for a portion which becomes an article housing opening 1d which is an entrance portion of the article housing space 1 c; a third step of disposing the object to be packed C in the article storage space 1C through the article storage opening 1 d; and a fourth step of filling air from the inlet 11a into the small bubbles 11 to expand them and simultaneously bonding and closing the opening 1d for accommodating the article and the small bubbles 11, wherein the steps are performed in the order described above, and wherein the direction of movement of the object to be packed C when the object to be packed C is placed in the article accommodating space 1C in the third step and the direction of air ejected from the tip portions of the nozzles 61 disposed in the buffer plate 1 for use in order to fill air into the small bubbles 11 in the fourth step are aligned.

By performing the above steps in sequence, the cushioning packaged body into which the object to be packaged is put can be efficiently manufactured.

The first step and the second step are "continuously performed", that is, the buffer plate 1 passes through the second step without being cut after passing through the first step, and it is a matter of course that there is no other mechanism between the first step and the second step at all.

In the second invention, the first step includes a step of forming a plurality of bottom seals 12 in the width direction of the stacked plates at the end portions of the stacked plates, thereby forming a plurality of small bubbles 11 extending in the width direction of the plates, and forming a resistance seal 13 for bonding the stacked soft resin plates 10 and imparting resistance to air flowing through the inlet 11a at the inlet 11a of the small bubbles 11.

By forming the resistance seal 13 at the inlet portion 11a of the small bubbles 11, resistance is given to the air flow passing through the small bubble inlet portion 11a, so that the small bubbles 11 can be closed in a state of being sufficiently filled with air without immediately dropping the air when the air is filled into each small bubble 11.

A third aspect of the present invention provides an apparatus for manufacturing a cushioning packaging body into which a packaged object is put, comprising: a buffer plate forming device 8 for forming a buffer plate 1 having small bubbles 11 extending in the width direction of the plate and having an air-filled inlet 11a at least at one end by stacking and heat-sealing long soft resin plates 10 continuously conveyed in the longitudinal direction; an article storage space forming device 3, which is a device provided continuously to the above-mentioned cushioning plate forming device, and which forms an article storage space 1c, which is a space surrounded by the small bubble 11, by folding the cushioning plate 1 so that the folding line 1b, which is in a crossing relation with the extending direction of the small bubble 11, crosses the small bubble 11 so as to cross the extending direction of the small bubble 11; a plate bonding device 4 for bonding the buffer plates 1 in the stacked state; an article placement device 5 for placing the object C in the article storage space 1C; an air filling device 6 for filling air into the small bubbles 11, wherein the air filling device 6 has a nozzle 61 disposed inside the cushion plate 1 for use in order to fill air into each small bubble 11, and the direction of air ejected from the tip of the nozzle 61 and the moving direction of the objects to be packed C when the objects to be packed C are arranged in the object accommodating space 1C by the article arranging device 5 are aligned.

By passing the long flexible resin sheet 10 through a series of apparatuses as described above, the cushion package in which the object to be packed is placed can be processed, and the cushion package in which the object to be packed is placed can be easily manufactured.

In accordance with a fourth aspect of the present invention, there is provided an apparatus for manufacturing a cushioning packaging body into which a packaged object is put, wherein the plate bonding apparatus 4 includes: a longitudinal direction sealing portion 41 for bonding the longitudinal direction of the cushion plate 1, a width direction sealing portion 42 for bonding the width direction, and a bubble closing sealing portion 43 for bonding the cushion plate 1 at the inlet portion 11a of the bubble 11, wherein an air passage 15 communicating with the bubble 11 is formed in the cushion plate 1 by the longitudinal direction sealing portion 41, and the air-packing device 6 includes: the air nozzle 61 having the air discharge portion 61a at the tip end disposed in the air passage 15, and the backflow preventing member 62 for pressing the air passage 15 to cause the air in the air passage 15 to flow toward the small bubbles 11 are both formed on the moving body M which is movable in the longitudinal direction of the buffer plate 1 in accordance with the size of the object C to be packaged, and after the air discharged from the air nozzle 61 is filled into the small bubbles 11, the moving body M is moved in the downstream direction together with the buffer plate 1, and the buffer plate 1 is bonded by the width direction sealing portion 42 and the inlet 11a of the small bubbles 11 is closed by the small bubble closing sealing portion 43 to complete the cushion packaging body to be placed in the object.

As described above, since the air is efficiently filled in the cells 11 by the operation of the moving body M having the widthwise sealing portion 42 and the backflow preventing member 62, the cushion package in which the object to be packed is put can be easily manufactured.

In the fifth invention, a recess 62a having a shape corresponding to the cross-sectional shape of the air nozzle 61 is formed in the tip end portion 62b of the backflow preventing member 62, and the air passage 15 other than the portion where the air nozzle 61 is disposed is closed by pressing the tip end portion 62b against the air passage 15 in a state where the air nozzle 61 disposed in the air passage 15 is disposed in the recess 62 a.

As described above, by pressing the front end portion 62b of the backflow prevention member 62 against the air passage 15, the air supplied from the air nozzle 61 can be reliably filled into the small bubbles 11.

In the fourth or fifth aspect of the present invention, the air-packing device 6 includes an adjusting nozzle 63 having a tip end portion disposed in the article storage space 1c, and the adjusting nozzle 63 includes a device for adjusting the internal pressure of the article storage space 1c, and the device can either draw out air existing in the article storage space 1c or fill the article storage space 1c with gas such as air or inert gas.

As described above, the adjustment nozzle 63 adjusts the internal pressure of the article storage space 1C to the positive pressure or the negative pressure as compared with the external pressure, thereby preventing the air from being filled into the small bubbles 11 and maintaining the quality of the object to be packed C, and improving the cushioning effect of the entire cushioning package, so as to manufacture the optimum cushioning package according to the purpose of use.

Drawings

FIG. 1 is an explanatory view of a buffer plate forming apparatus of a manufacturing apparatus according to an example of the present invention;

FIG. 2 is an explanatory view showing a plate supply adjusting device, an article housing space forming device, a plate bonding device and an air filling device in a state where an article arranging device is omitted in the manufacturing apparatus;

FIG. 3 is a perspective view showing the cushion plate in a state where the small bubbles are formed;

FIG. 4A is an enlarged explanatory view of a main part of a reverse-bending apparatus in the article storage space forming apparatus, and (B) is a sectional view taken along line A-A of (A);

FIG. 5 is a perspective view illustrating a state where the buffer plate is bent;

FIG. 6 is an explanatory view showing a front view of the article arranging apparatus;

FIG. 7 is an explanatory diagram of a left view thereof;

FIG. 8 is an explanatory view of a top view thereof;

FIG. 9A is a view showing a main part of a manufacturing apparatus according to an example of the present invention, in which a buffer plate is filled with air, and FIG. 9B is a view showing a backflow preventing member;

fig. 10 is a main part explanatory view showing a state where the moving body is moved downward after air is filled in the buffer plate in the manufacturing apparatus;

FIG. 11 is a perspective view showing an example of a cushioning packaging body for storing a packaged article according to the present invention;

fig. 12 is a perspective view showing an example of a conventional cushioning packaging body into which an object to be packaged is put.

Detailed Description

The following describes an apparatus for manufacturing a cushioning package in which a material to be packed is placed, as an example of an embodiment of the present invention, with reference to the drawings. Fig. 1 is an explanatory view showing a buffer plate forming apparatus of a manufacturing apparatus of this example, fig. 2 is an explanatory view showing a plate supply adjusting apparatus, an article accommodating space forming apparatus, a plate bonding apparatus, and an air charging apparatus in a state where an article arranging apparatus is omitted in the manufacturing apparatus of this example, and fig. 6 to 8 are explanatory views showing the article arranging apparatus.

The manufacturing apparatus of this example forms the cushion sheet 1 having the cells 11 by using the long soft resin sheet 10, and fills the cells 11 with air while surrounding the object C to be packed, thereby manufacturing the cushion package body in which the object C to be packed is put.

The manufacturing apparatus of this example includes: a buffer plate forming device 8 shown in fig. 1, and a plate supply adjusting device 2, an article storage space forming device 3, a plate bonding device 4, an article arranging device 5, and an air filling device 6 shown in fig. 2.

The respective devices will be described below. The following description is made in terms of the order of steps of the manufacturing apparatus of this example, but the order of the steps of the present invention should not be construed as being limited to this example, and the steps can be replaced as appropriate within the possible range. In addition, a part of the process may be omitted in some cases.

As shown in fig. 1, the buffer plate forming device 8 includes: the web feeding device 81, the conveying device 82, and the bottom seal forming device 83 form the buffer plate 1 having the cells 11 by performing heat sealing on the web 10.

The coil supplying device 81 is a device for continuously conveying a long coil 10 having a constant width in the longitudinal direction, and in this example, a sheet made of a soft thermoplastic resin such as polyethylene or nylon is used as a material of the coil 10. Transparent to the web 10 is used in this example, but colored and translucent and opaque may also be used, or pre-printed with notes and promotional text on the surface.

The coil supplying device 81 is provided with a shaft (not shown) capable of supporting the rotation thereof, and a coil drum 10a for winding the coil 10 in a cylindrical state is attached to the shaft. In this example, a sheet amount sensing mechanism 81a is provided, which is in contact with the outer peripheral surface of the web cylinder 10 a. Which is used to detect the web diameter of the web cylinder 10a so that the time to change the web cylinder 10a can be known.

In this example, the web rolls 10a and 10a are provided in the vertical direction in the figure so as to face the surface of the conveyor 82 on which the web 10 flows, but the position of the web rolls 10a is not limited to this, and they may be provided in parallel in the horizontal direction or the like, and may be changed as appropriate depending on the surrounding conditions such as the installation location of the buffer sheet forming device 8.

The web 10 drawn out from the web roll 10a is then passed through the tension adjusting mechanism 81 b. Which is provided with a moderate tension by hanging the coil 10 on rollers pressed in the up-down direction, respectively, for preventing slackening. The web 10 with the tension applied thereto is then stacked on top of another at the feed roller 81c and fed to the conveyor 82. Since tension adjustment is separately performed in the sheet supply adjusting device 2 located downstream of the conveyor 82, the web 10 can be heat sealed without being slackened even during conveyance on the conveyor belt 82a of the conveyor 82.

The conveyor 82 conveys the web 10 while supporting it from below by a conveyor belt 82a formed of a flat belt or the like, a bottom seal forming device 83 described later is positioned on the conveyor 82, and a roller of the bottom seal forming device 83 presses the web 10 supported by the conveyor belt 82a to perform heat sealing.

The web 10 thus conveyed by the conveyor 82 passes through the lower bottom seal forming device 83. In this example, as shown in fig. 1, the bottom seal forming device 83 is a roller having a cylindrical roller outer peripheral surface provided with a heating protrusion 83 a. A heating device such as a heater is provided inside the roller, and the heating protrusions 83a to which the thermal energy is transferred are pressed against the web 10, whereby the web 10 in a vertically overlapped state is bonded, and a bottom seal 12 having a straight line shape in the width direction shown in fig. 3 is formed. Since the bottom seal forming device 83 is also rotated together with the operation of the conveyor 82, the bottom seals 12 are sequentially formed in the longitudinal direction thereof with a certain interval corresponding to the heating protrusions 83a of the rollers.

In the middle between the bottom seals 12, a space extending in a rectangular shape in the width direction becomes the small bubble 11. At the point in time when the bottom seal 12 is formed in this way, the small bubble 11 is not yet a closed space, but is closed in an air-filled state by the rear panel bonding device 4.

As shown in fig. 3, one end of the bottom seal 12 is connected to one side 1e of the end edge along the longitudinal direction of the cushion plate 1. The other end of the bottom seal 12 is formed at a predetermined interval from the other end 1f of the end edge along the longitudinal direction of the cushion plate 1. The portion where the interval is maintained becomes an air passage 15 extending in the same direction as the bottom seal 12 is formed in order in the longitudinal direction. That is, by forming the bottom seal 12, the small bubbles 11 extending in the width direction are formed to be branched orthogonally to the air passage 15 extending in the longitudinal direction of the cushion plate 1.

By this bottom seal forming means 83, a resistance seal 13 is also formed simultaneously with the bottom seal 12. In this example, as shown in fig. 3, the resistance seal 13 is composed of a first seal 13a and a second seal 13b formed in a straight line shape and inclined with respect to the bottom seal 12, and a third seal 13c formed in a circular shape inside the first seal 13a and the second seal 13b, and the air passage of the blister inlet 11a is reduced by these seals 13a to 13 c. By forming the resistance seal 13 in this way, resistance can be given to the air flow passing through the small bubble inlet portion 11a without the air filled in each small bubble 11 running off immediately after filling.

The specific shape of the resistance seal 13 is not limited to the one shown in this example, and various modifications may be made as long as the resistance can be given to the air flow passing through the small bubble inlet 11a, such as narrowing the air passage of the small bubble inlet 11a, or forming the air passage in a labyrinth shape. If a mechanism such as a pressure plate for clamping the cell inlet 11a in order to prevent the air filled in the cell 11 from escaping is provided in the plate bonding device 4 and the air filling device 6 located on the downstream side, the formation of the resistive seal 13 may be omitted.

The bottom seal forming device 83 is not limited to the use of rollers to continuously heat seal the supplied web 10a as in this example. For example, a flat plate-like hot plate which can move up and down with respect to the conveyor belt 82a may be pressed against the web 10a to perform heat sealing. However, in this case, the coil 10a needs to be intermittently fed in accordance with the operation of the heating plate, and when the feeding time of the buffer plate 1 deviates from the operation time of each device after the plate feeding adjustment device 2, a mechanism for absorbing the intermittent operation of the buffer plate 1 needs to be separately provided. This mechanism may be provided in the buffer plate forming device 8 or may be provided in the plate supply adjusting device 2 on the downstream side.

The roller heating protrusion 83a of the bottom seal forming device 83 may be detachable from the roller body so as to change the interval between the bottom seals 12, that is, the width of the small bubbles 11.

In this example, in the buffer sheet forming apparatus 8, only the side seal 12 and the resistance seal 13 are formed on the web 10, but the two sheets are not heat-sealed to the end edge 11f shown immediately before in fig. 3, but the side seal 12 and the resistance seal 13 may be heat-sealed in a spot form as a temporary fixing for not dispersing or curling the two sheets even to the end edge 11 f.

The shape of the small bubble 11 is not limited to the rectangular shape as in this example. For example, a plurality of circular and elliptical small bubbles may be formed by changing the shape of the roller heating protrusion 83a of the bottom seal forming device 83, and the respective small bubbles may be formed to be connected to each other through an air passage, or the buffer plate 1 itself may be formed as one air layer, that is, as the large small bubbles 11 without forming the bottom seal 12. Alternatively, even if the bottom seal 12 is formed as in this example, the interval may be formed unevenly so as to expand into the small bubbles 11 having different sizes.

That is, the form of the small bubbles 11 may be changed in various ways as long as the air can be filled into the inside.

Then, the cushion plate 1 having the bottom seal 12 and the resistance seal 13 formed in the cushion plate forming device 8 is supplied to the plate supply adjusting device 2 without being cut. Here, as in this example, there may be no other mechanism between the buffer plate forming device 8 and the plate supply adjusting device 2, or there may be another mechanism such as a mechanism for performing another additional processing on the buffer plate 1 processed by the buffer plate forming device 8 or a mechanism for once retaining the buffer plate 1.

The mechanism for once retaining the buffer plate 1 is particularly necessary when the buffer plate forming device 8 continuously feeds the buffer plate 1 and each device after the plate supply adjusting device 2 intermittently feeds the buffer plate 1. Even if the processing by the buffer plate forming device 8 is performed intermittently, it is also necessary if there is a deviation from the processing time of each device after the plate supply adjusting device 2.

The plate supply adjusting device 2 is provided with a driving roller 21, a tension adjusting arm 22, and the like, and pulls out the cushion plate 1 heat-sealed by the cushion plate forming device 8, and supplies the plate in a tensioned state to each device after the article storage space forming device 3. These are driven in conjunction with the operation of a moving body M described later, and only the portion of the cushion plate 1 moving on the downstream side is pulled out in tension on the upstream side.

The article storage space forming device 3 bends the buffer plates 1, and the article storage space 1c is formed between the bent buffer plates 1.

The article storage space forming device 3 includes a folding device 31, a folding device 32, and a reverse folding device 33 in this example.

The bending devices 31 each include: a center support part 31a for supporting the substantially center of the buffer plate 1 in the width direction on the downstream side and both end periphery support parts 31b for supporting the peripheries of both end parts of the buffer plate 1 in the width direction on the upstream side are provided, so that a fold is formed in the center of the buffer plate 1 in the width direction. Specifically, the plan view is a flat plate of a substantially equilateral triangle, the vertex (the vertex sandwiched by the respective equilateral sides) of which is the center support portion 31a, and the equilateral sides are the both-end peripheral support portions 31 b. And in this example the plate is arranged obliquely upward from the upstream side to the downstream side.

When the cushion plate 1 passes through the bending device 31, it is bent along the both end peripheral support portions (each equilateral side) 31b, and the fold lines 1b are sequentially formed in the portion of the central support portion (apex) 31 a.

The bending device 31 is not limited to a flat plate shape as in this example, and may be a V-shaped bar having only vertices and equal sides. Moreover, only the apex and the periphery of the width direction end (not necessarily both ends) of the cushion plate 1 may be supported in a dot shape. That is, the configuration may be modified to various forms as long as the periphery of the end portion of the cushion plate 1 can be supported without trouble in the subsequent step by forming a fold line at the approximate center of the cushion plate 1 and bending the cushion plate 1.

The folding device 32 is connected downstream of the central support portion 31a of the folding device 31, and folds the cushion plate 1 along the fold line 1b formed as described above while being sandwiched between two rollers 32a and 32a provided as a set and guided as the cushion plate 1.

In this example, since the folding line 1b is positioned at the upper side by the folding device 31 and both end positions of the cushion plate 1 are folded at the lower side, the rollers 32a and 32a are arranged in the vertical direction as shown in fig. 2.

The reverse bending devices 33 each include: an intermediate support part 33b for supporting the intermediate part of the cushion plate 1 on the upstream side and an end peripheral support part 33c for supporting the peripheral edge of the end part of the cushion plate 1 in the width direction on the downstream side are formed so that the cushion plate 1 folded by the folding device 32 is folded back and forth in the opposite directions to form an article storage space 1c surrounded by the cushion plate 1.

In this example, the reverse-folding device 33 is provided in the layout of the manufacturing apparatus for the purpose of converting the longitudinal direction of the cushion plate 1 into the downward direction by making the cushion plate 1 disposed at the lower right in the figure shown in fig. 2 traverse when passing through the upper folding device 31 and the folding device 32, and easily disposing the objects to be packed C in the article storage space 1C of the cushion plate 1, and may be omitted as appropriate. When the reverse-folding device 33 is omitted, the space surrounded by the cushion plate 1 in the folded shape of the cushion plate 1 becomes the article storage space 1c at the time of passing through the folding device 32.

The specific shape of the reverse-bending apparatus 33 in this example is such that the cushion plate 1 passes through the insides of the flat plates 33a, 33a arranged in parallel, as shown in fig. 4 (B). The flat plate 33a is a flat plate having a substantially right-angle equilateral triangle in a side view. As shown in fig. 2 and 4(a), the oblique side of the end peripheral support portion 33c of the flat plate 33a is arranged at a low position on the downstream side. And the apex of the high end of the hypotenuse 33c is the intermediate support portion 33 b.

The cushion plate 1 is covered on the respective flat plates 33a, 33a along the oblique side 33c in a state where the fold 1b is at the upper position. Then, since the cushion plate 1 moves downward in a shape of falling between the flat plates 33a and 33a, the fold 1b is bent in the opposite direction by the intermediate support portion 33b and the end peripheral support portion 33c, and the front and back of the cushion plate 1 are reversely reversed.

As shown in fig. 4(B), the cushion plate 1 is formed in a U shape along the flat plates 33a and 33a, and the space surrounded by the cushion plate 1 is an article storage space 1 c.

Here, the interval between the flat plates 33a, 33a of the reverse-folding device 33 and the mounting position of the reverse-folding device 33 in the manufacturing apparatus (the left-right direction position in fig. 2) can be changed by fixing with screws or the like, so that the bag-making size can be changed, and a variety of cushion packages can be manufactured by one manufacturing apparatus.

The plate bonding device 4 bonds only the cushion plate 1 folded by the article storage space forming device 3 by heat sealing or the like, and wraps the object C with the cushion plate 1.

The plate bonding apparatus 4 includes a longitudinal sealing portion 41 and a width sealing portion 42. The longitudinal seal portion 41 is provided downstream of the reverse bending device 33. The longitudinal seal portion 41 is formed with a longitudinal seal 14 in the longitudinal direction at the end portion on the opening side of the U-shaped cushion plate 1 shown in fig. 4(B), and thus, as shown in fig. 5, the cushion plate 1 is formed in a cylindrical shape surrounding the article storage space 1c, and along with the formation of the longitudinal seal 14, an air passage 15 is formed between the bottom seal 12 formed at the stage from the cushion plate 1 and the longitudinal seal 14.

The width direction seal portion 42 is provided in a moving body M described later, and seals the article storage space 1c and the air passage 15, and performs a width direction seal 16 in the width direction of the buffer plate 1.

In this example, as shown in fig. 2, first, a widthwise seal 16 for receiving the object to be packed C is formed at the end edge of the buffer plate 1 on the short side. The upstream side of the article storage space 1c is opened at the time when the width direction seal 16 is formed, and this portion becomes an entrance of the article storage space 1c, that is, an article storage opening 1 d. After the packaged object C is disposed in the article storage space 1C through the article storage opening 1d, a width seal 16 is formed in the article storage opening 1d to close the article storage space 1C.

These seals 14 and 16 performed in each direction are not limited to the heat seal of this example, and may be formed by various methods using an adhesive or the like, and the bonding method may be modified.

The shape of the seal is a continuous linear seal in this example, but may be an intermittent seal such as a dashed line through which air can flow inside and outside the article storage space 1c, or may be a dotted line seal, and various modifications may be made.

The article placement device 5 includes a clamp 51, a movable arm 52, and driving cylinders 53a and 53b as shown in fig. 6 to 8, and is disposed above the reverse-folding device 33 as shown by the broken line in fig. 2.

Each part of the article placement device 5 is driven by air pressure, and the movable arm 52 is connected to the driving cylinders 53a and 53 b. Thus, the movable arm 52 can be moved. A gripping portion 51 is provided at the lower end of the movable arm 52 for gripping the object C. Therefore, the clamp portion 51 can move up, down, left, and right.

In this example, the article arranging apparatus 5 uses the driving cylinders 53a and 53b, but the present invention is not limited thereto, and various driving apparatuses may be used. For example, by using a servo motor, even when the shape of the object to be packed C changes, the object to be packed C can be freely disposed in the article storage space 1C.

The operation for arranging the object to be packed C positioned on the side surface of the reverse-folding device 33 in the article accommodating space 1C of the buffer plate 1 will be described with reference to fig. 2, and first, the object to be packed C is gripped by the grip portion 51, and the vertical direction driving cylinder 53a is operated to ascend at once (operation 1). Then, the horizontal direction driving cylinder 53b is operated and moved rightward to be positioned directly above the article storage space 1c (operation 2). Then, the vertical direction driving cylinder 53a is operated to move the movable arm 52 downward, whereby the object to be packed C is lowered into the article storage space 1C, and when the object to be packed C is placed in contact with the width direction seal 16 formed in advance at the lowermost flow position of the buffer plate 1 (operation 3), the clamp portion 51 is released and separated from the object to be packed C. Then, the clamp portion 51 is returned to the original position by the reverse operation.

By repeating the above-described operation, the objects to be packed C can be continuously arranged in the article storage space 1C.

In this example, as shown in fig. 2, the air charging device 6 is configured such that a tubular nozzle 61 is disposed inside the air passage 15 formed in the cushion plate 1, the nozzle 61 is located upstream of the longitudinal seal portion 41, extends rightward, and is bent downward, and the base end thereof is fixed to the manufacturing device.

Air supplied from an air supply device (not shown) such as an air compressor is ejected from the air ejection portion 61a at the front end through the nozzle 61.

In this example, the adjustment nozzle 63 having the same shape as the nozzle 61 is provided in parallel with the nozzle 61. The tip of the adjusting nozzle 63 is disposed in the article storage space 1c of the cushion plate 1.

Here, the sequence of filling the air into the small bubbles 11 and putting the cushioning material into the packed object will be described with respect to the cushioning plate 1 in which the packed object C is arranged in the article storage space 1C as described above.

The manufacturing apparatus of this example includes a movable body M that is movable up and down along the longitudinal direction of the cushion plate 1. The moving body M includes: a width direction sealing part 42, a backflow preventing member 62 for pressing the buffer plate 1 in the width direction, and a cutter 7 for cutting the buffer plate 1. A small bubble sealing portion 43 for sealing the small bubble inlet portion 11a by heat sealing is provided below the moving body M.

As shown in fig. 9(a), air is ejected from the air ejection portion 61a of the nozzle 61 disposed in the air passage 15 to the cushion plate 1 in a state where the object to be packed C is disposed in the article storage space 1C, and the air is filled into the small bubbles 11 through the air passage 15. At this time, the backflow prevention member 62 is disposed slightly upstream of the air discharge portion 61a of the nozzle 61, and the cushion plate 1 is sandwiched. The backflow prevention member 62 is a plate-like body having a tip portion 62B with a planar shape, and recesses 62a and 62a with a substantially rectangular or semi-elliptical cross-sectional shape as shown in fig. 9(B) are formed by partially recessing the tip portion, and the nozzle 61 and the adjustment nozzle 63 are disposed in the recesses 62a and 62 a. Here, the nozzle 61 presses the air passage 15 of the buffer plate 1 by the tip portion 62b, so that the air supplied from the nozzle 61 does not leak and does not flow backward in the upstream direction. The same applies to the adjusting nozzle 63.

Here, the shapes of the nozzle 61, the adjusting nozzle 63, and the recesses 62a and 62a are preferably configured so that wrinkles do not form on the buffer plate 1 when the reverse-flow preventing member 62 sandwiches the buffer plate 1. For example, it is preferable to reduce the dimension in the direction perpendicular to the longitudinal direction of the backflow prevention member 62 as much as possible.

Here, in the cushion plate 1 of the present invention, since the bubble 11 is not provided with the check valve for preventing the air from escaping, but only the resistance seal 13 for providing resistance to the air flow passing through the bubble inlet 11a is provided, even if the air is filled into the bubble 11 through the nozzle 61 as described above, the air flows back to the air passage 15 as it is, and the air escapes from the bubble 11. The bubble closing seal 17 as shown by a broken line in fig. 5 is formed by the bubble closing seal portion 43 to close the bubble inlet portion 11 a. Thus, the small bubble 11 is completely sealed, and the filled air does not leak out, thereby maintaining the cushioning effect.

After the air is filled in the small bubbles 11, the small bubble inlet 11a may be clamped by a jig such as a rubber roller or a pressing plate so that the air filled in the small bubbles 11 does not leak out while the small bubble inlet 11a is closed as described above.

Then, as shown in fig. 10, the moving body M is moved to a position below the predetermined distance. Specifically, only downward movement enables the production of a portion of cushioning material into which the object to be packed is placed. At this time, since the backflow prevention member 62 is in a state of not holding the buffer plate 1 therebetween, the buffer plate 1 also moves downward in accordance with the movement of the moving body M. The plate supply adjusting device 2 operates in conjunction with this to supply the buffer plate 1 from the buffer plate forming device 8 only to the portion where the moving body M moves.

Here, the moving distance of the moving body M can be appropriately adjusted, and thus the most suitable cushion package can be manufactured according to the size of the object to be packed C and the like.

In this state, the width direction seal 16 is formed and closed in the article storage opening 1d by the width direction seal portion 42. The width direction seal portions 42 are arranged in two parallel rows at the front end portions thereof contacting the cushion plate 1, i.e., the seal bars 42a, so that the width direction seals 16 form two parallel rows on the cushion plate 1.

The article storage opening 1d is closed by the formation of the width direction seal 16, and the article storage opening is cut by the cutter 7 between the width direction seals 16, 16 provided in two rows. As shown in fig. 11, the cushion package in which the packed object C is enclosed by the air-filled small bubbles 11 is completed.

As described above, according to the present invention, since the steps of the respective apparatuses are sequentially continuous, the cushioning packaged body into which the object to be packed is put can be efficiently manufactured.

The air passage 15 of the buffer plate 1 is also closed by the formation of the width direction seal 16. Therefore, even if the bubble closing seal 17 is not formed as described above, the width direction seal 16 can prevent the air filled in the bubble 11 from leaking to the outside from the air passage 15. However, unlike the case where the bubble closing seal 17 is provided to close each of the bubbles 11 as described above, in the case where only the air passage 15 is closed, if the width direction seal 16 is broken and the article storage space 1c is opened, the air filled in the bubbles 11 escapes to the outside through the air passage 15 at the same time, and even if one of the bubbles 11 is broken, all the air escapes to the outside, so that the use thereof is limited to disposable cushion packages and the like.

Here, the operation of the adjustment nozzle 63 will be described.

When air is filled into the small bubbles 11, as described above, the backflow prevention member 62 ejects air from the air ejection portion 61a of the nozzle 61 while pressing the cushion plate 1, and as shown in fig. 10, the air is filled into the small bubbles 11 and expands, and the expanded small bubbles 11 press the article storage space 1 c. This is because the article storage space 1c and the formed longitudinal seal 14, fold 1b, and width seal 16 are closed by the pressing of the backflow prevention member 62 in this example. Accordingly, the small bubble inlet 11a is pressed to interrupt the flow of air from the air passage 15 to the small bubble 11 in the middle, and thus, an air filling failure may occur in the small bubble 11.

Then, the adjusting nozzle 63 is disposed in the article storage space 1c, and the air in the sealed article storage space 1c is discharged to the outside through the adjusting nozzle 63 to adjust the internal pressure, thereby preventing the occurrence of the air filling failure as described above.

As another application of the adjusting nozzle 63, for example, when the article is in contact with air or when the article may be rusted or deteriorated due to moisture, the quality of the article C can be maintained by deaerating the article accommodating space 1C in advance by the adjusting nozzle 63 and filling the article accommodating space 1C with an inert gas such as nitrogen.

The cushion plate 1 is made of nylon having excellent air-blocking properties, and the article storage space 1C is sealed by bonding the cushion plate 1 by heat sealing 14, 16, etc., and the sealed state prevents air from flowing in from the outside and inert gas from flowing out from the inside, thereby maintaining the quality of the packed article C for a long period of time.

After the small bubbles 11 are completely filled with air, the air is further filled into the article accommodating space 1c from the adjusting nozzle 63 to be expanded, and the article accommodating space 1c itself has a cushioning effect, so that the double cushioning effect is provided together with the small bubbles 11, and the cushioning effect of the whole cushioning packaging body can be improved.

Therefore, by adjusting the positive pressure or the negative pressure in comparison with the outside in the article storage space 1c, an optimum cushion package can be manufactured according to the purpose of use.

The present invention is not limited to the embodiment shown in the present example, and various modifications are possible.

For example, unlike this example in which one cushion plate 1 is folded, the article storage space 1c may be formed by using two cushion plates 1 and bonding four sides of the opposing cushion plates 1 to each other, or by bonding three sides other than one side in the longitudinal direction, or by bonding two sides in the width direction. Thus, a completely closed cushion package is formed when all four sides are bonded, a cushion package having an opening at one position when three sides other than one side in the longitudinal direction are bonded, and a sleeve-like cushion package is formed when two sides in the width direction are bonded.

Instead of forming the article storage space 1C as in this example, the object to be packed C may be placed on the cushion plate 1 in a state where it is not stretched, by placing the object to be packed C on the cushion plate 1, and then packing and filling the air into the small bubbles 11.

As described above, the order of the steps and the processing method may be variously modified within the scope of the present invention as long as the cushion packaging body into which the object to be packaged is put is formed by a series of steps.

The present invention has the following excellent effects.

In the first invention, the first step of forming the cushion plate having the small bubbles, the second step of forming the article accommodating space, the third step of disposing the object to be packed in the article accommodating space, and the fourth step of closing the opening for article accommodating are performed in this order, whereby the cushion package body in which the object to be packed is placed can be efficiently manufactured.

The second invention is, in addition to the effect of the first invention, capable of sealing the small bubbles in a state of being sufficiently filled with air by forming a resistance seal at the inlet of the small bubbles and giving resistance to the air flow passing through the inlet of the small bubbles, so that the air does not immediately escape when the small bubbles are filled with air.

The third invention is to process a cushion-packed body in which a packed object is put by passing a long flexible resin sheet through a series of devices, and to easily manufacture the cushion-packed body in which the packed object is put.

The fourth invention is the cushion package body in which the object to be packed is put, which is easily manufactured because the air is efficiently filled in the small bubbles by the operation of the moving body having the width direction sealing portion and the backflow preventing member in addition to the effect of the third invention.

The fifth invention, in addition to the effect of the fourth invention, can reliably fill the small bubbles with the air supplied from the air nozzle by pressing the front end portion of the backflow preventing member against the air passage.

In the sixth invention, in addition to the effects of the fourth or fifth invention, the internal pressure of the article storage space is adjusted by the adjusting nozzle to be a positive pressure or a negative pressure as compared with the external pressure, thereby preventing the air from being insufficiently filled into the small bubbles and maintaining the quality of the packaged article, improving the cushioning effect of the entire cushioning package, and enabling the manufacture of an optimum cushioning package according to the intended use.

Claims (6)

1. A method for manufacturing a cushioning packaging body into which a packaged article is put, comprising:

a first step of forming a cushion plate (1) having small bubbles (11) extending in the width direction of the plate and having an inlet (11a) for filling air at least at one end by stacking and heat-sealing long soft resin plates (10) continuously conveyed in the longitudinal direction;

a second step, which is a step that follows the first step, wherein the cushion plate (1) is folded so as to cross the small bubble (11) so as to form an article housing space (1c) that is a space surrounded by the small bubble (11) by a fold (1b) that is in a crossing relationship with the extending direction of the small bubble (11) and so as to cross the small bubble (11) so as to cross the extending direction of the small bubble (11), and the end of the cushion plate (1) that is brought into a superimposed state by the folding is bonded except for a portion that becomes an article housing opening (1d) that is an entrance portion of the article housing space (1 c);

a third step of disposing the object (C) in the article storage space (1C) through the article storage opening (1 d);

a fourth step of bonding and sealing the opening (1d) for article accommodation and the small bubble (11) while filling air from the inlet (11a) into the small bubble (11) to expand the small bubble,

wherein each of the steps is performed in the order described above, and wherein,

in the third step, the moving direction of the object (C) when the object (C) is disposed in the article storage space (1C), and

in the fourth step, the direction of the air ejected from the tip portions of the nozzles (61) disposed inside the cushion plate (1) to be used is aligned in order to fill the air into the respective small bubbles (11).

2. The method of manufacturing a cushioning packaging body into which a packaged article is put according to claim 1,

the first process includes a process of forming a plurality of bottom seals (12) in the width direction of the sheet in the end portions of the superimposed sheets, so that a plurality of small bubbles (11) extending in the width direction of the sheet are formed,

and a resistance seal (13) formed at the inlet (11a) of the small bubble (11), bonded with the overlapped soft resin plate (10) and used for providing resistance to the air flowing at the inlet (11 a).

3. An apparatus for manufacturing a cushioning packaging body into which a packaged article is put, comprising:

a buffer plate forming device (8) for forming a buffer plate (1) having small bubbles (11) extending in the width direction of the plate and having an inlet (11a) for filling air at least at one end by laminating and heat-sealing long soft resin plates (10) continuously conveyed in the length direction;

an article storage space forming device (3) which is provided continuously to the buffer plate forming device and which forms an article storage space (1c) which is a space surrounded by the small bubble (11) by folding the buffer plate (1) so that the small bubble (11) is crossed with a fold (1b) intersecting with the extending direction of the small bubble (11) and the small bubble (11) is crossed with the extending direction of the small bubble (11);

a plate bonding device (4) for bonding the buffer plates (1) in a stacked state;

an article arrangement device (5) for arranging the article (C) to be packed in the article storage space (1C);

an air filling device (6) for filling air into the small bubbles (11),

the air filling device (6) has a nozzle (61) disposed inside the cushion plate (1) for filling air into each of the small bubbles (11), and the direction of the air ejected from the tip of the nozzle (61) is the same as the direction of the air ejected from the tip of the nozzle (61)

The moving direction of the packaged objects (C) is consistent when the packaged objects (C) are arranged in the object accommodating space (1C) by the article arrangement device (5).

4. The apparatus for manufacturing a cushioning packaging body into which a packaged article is put according to claim 3, wherein said plate bonding means (4) comprises: a length direction sealing part (41) for bonding the length direction of the buffer plate (1), a width direction sealing part (42) for bonding the width direction, and a small bubble sealing part (43) for bonding the buffer plate (1) at the inlet part (11a) of the small bubble (11), an air passage (15) communicated with the small bubble (11) is formed on the buffer plate (1) through the length direction sealing part (41), the air filling device (6) comprises: an air nozzle (61) having an air discharge portion (61a) at the tip thereof disposed in the air passage (15), and a backflow prevention member (62) for pressing the air passage (15) to cause the air in the air passage (15) to flow toward the small bubbles (11), the width direction sealing part (42) and the backflow preventing component (62) are both formed on a moving body (M) which can move along the length direction of the buffer plate (1) according to the size of the object to be packed (C), after the air ejected from the air nozzle (61) is filled into the small bubbles (11), the moving body (M) is moved to the downstream side together with the buffer plate (1), the cushion plate (1) is bonded by a width direction sealing part (42) and the entrance part (11a) of the small bubble (11) is closed by a small bubble closing sealing part (43) to complete the cushion packaging body for putting the packaged object.

5. The apparatus for manufacturing a cushioning packaging body into which a packaged article is put according to claim 4, wherein the backflow prevention member (62) has a recessed portion (62a) formed at a tip end portion (62b) thereof, the recessed portion having a shape conforming to a cross-sectional shape of the air nozzle (61), and the air passage (15) other than a portion where the air nozzle (61) is disposed is closed by pressing the tip end portion (62b) against the air passage (15) in a state where the air nozzle (61) disposed in the air passage (15) is disposed in the recessed portion (62 a).

6. The apparatus for manufacturing a cushioning packaging body into which a packaged article is put according to claim 4 or 5, wherein the air-packing device (6) has an adjusting nozzle (63) whose tip portion is disposed in the article storage space (1c), and the adjusting nozzle (63) has a device for adjusting the internal pressure of the article storage space (1c), said device being capable of either extracting air existing in the article storage space (1c) or filling air or inert gas into the article storage space (1 c).