JPH05305969A - Package cushioning material and method and device for its production - Google Patents

Abstract

PURPOSE:To obtain the method and device for an efficient production of cushioning material by effectively using powdered used paper as filling element in the cushioning material instead of incinerating or burying used paper as in the conventional case. CONSTITUTION:The powdered used paper in an aggregate form is used as the filling element 1 of cushioning material. The filling elements 1 consisting of such paper powder are enclosed with an air-permeable rough tissue paper 2, which is then wrapped and sealed with a flexible outer cover 5. More specifically, the paper powder in a hopper 25 is emptied on rough tissue paper 2a with negative pressure applied to its rear face, a second rough tissue paper 2b is placed thereon, their peripheral edges are folded to form an inner pack 3 and the inner pack 3 is wrapped with a flexible outer cover 5 by using a prior art sealing and wrapping device 60. In the production of the inner pack 3, the paper powder in the hopper 25 is emptied on the strip-like rough tissue paper 2 being fed by a mesh belt 42 from its feed roll 47 provided on the upstream side of a mesh belt conveyor 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material to be filled between an article and a transport container when a fragile article is conveyed, and more particularly to a cushioning material using crushed waste paper as a filling element. And its manufacturing method and apparatus.

[0002]

2. Description of the Related Art Styrofoam molded products are used in large quantities as a cushioning material for packaging. However, since Styrofoam uses freon as a foaming material, there is a problem of environmental destruction. When used Styrofoam is incinerated. There is a problem such as the large amount of combustion heat. On the other hand, it is preferable to use used paper as a raw material for recycled paper, but copy paper or the like with carbon printed on the back side cannot be recycled, and is therefore incinerated or landfilled. Also, confidential documents are shredded with shredder and discarded, but paper that has been shredded into small pieces cannot be used as a raw material due to problems in the recycled paper manufacturing process, and must be incinerated or landfilled. is the current situation.

[0003]

The present invention was made as part of a research for effective utilization of non-recyclable waste paper that was conventionally incinerated or landfilled from the viewpoint of environmental protection and effective utilization of resources. By using waste paper, which cannot be used as a raw material for recycled paper, as a cushioning material for packaging, it is intended to reuse the waste paper and reduce the amount of Styrofoam used.

[0004]

The cushioning material for packaging of the present invention uses an aggregate of crushed waste paper as the filling element 1 (a, b). As the used paper, it is effective to use used paper that cannot be used as a raw material for recycled paper such as back carbon paper or paper cut with a shredder. A packing element 1 made of waste paper powder is encapsulated in a breathable rough tissue paper 2 (a, b) such as tissue paper, and further hermetically wrapped in a flexible outer skin 5 such as polyethylene sheet or kraft paper. .. In this case, a small hole 4 is punched in the flexible outer skin 5 so that air can flow out from the small hole 4 when crushed.

A collection of waste paper powder, which becomes the filling element 1, is discharged from the hopper 25 (a, b) or the like in a state where a negative pressure is applied to the back surface of the rough tissue paper 2 having air permeability such as tissue paper. It can be formed by dropping waste paper powder. An aggregate 1 of waste paper powder formed on the rough textured paper 2
Covers the second rough tissue paper 2b from above and folds the periphery, or the rough texture paper 2a which is the underlay
By folding and wrapping the aggregate 1, the inner tissue 3 is enclosed by the rough tissue paper 2.

[0006] The inner package 3 is supplied to a conventionally known hermetic packaging device 60 at a constant interval by a conveyor or the like, and is packaged with a flexible outer skin 5 such as a heat-meltable plastic film or kraft paper. .. This hermetic packaging device 6
0 is an inner package 3 to be packaged by heat welding or an adhesive.
Use a structure that can seal. The flexible outer skin 5 is provided with a small hole 4 for ventilation in advance by providing a needle roller 68 or the like in the supply path.

As a concrete apparatus for forming the aggregate 1 of waste paper powder on the rough textured paper 2, the mesh belt 42 (a,
The paper feed roll 47 (a, b) of the band-shaped coarse textured paper 2 is provided on the upstream side of the conveyor 41 (a, b) around which the b) is wound, and the upper surface of the mesh belt 42 is exposed to waste paper powder or other fibrous powder. A hopper 25 for dropping the body is provided, and an air intake port 43 (a, b) of the suction blower is provided at a position facing the drop port 32 (a, b) of the hopper 25 with the mesh belt 42 interposed therebetween.
A device with an open mouth is used.

In this case, as shown in the embodiment, a stack 1b of waste paper powder is formed on the second rough tissue paper 2b by the same apparatus as described above, and the stacks 1a and 1b are superposed on each other. When the second rough textured paper 2b is covered on the first rough textured paper 2a, the stack 1 having a large thickness can be easily and stably formed.

The obtained aggregate 1 is wrapped with a band-shaped rough tissue paper 2 by a former 52 or the like to form an inner package 3,
It is cut by the cutting machine 54 and sent to the hermetic packaging device 60 by the separating and conveying device 55.

As the separating / conveying device 55, specifically, a finger conveyor in which fingers 57 are provided on a chain conveyor at regular intervals can be used, and the inner package 3 cut by the cutting device 54 is arranged at the intervals of the fingers 57. The structure may be one by one.

As the hermetic packaging device 60, the paper feed roll 4 of the flexible outer cover 5 such as a heat-meltable plastic film is used.
7, a known structure having a folding portion 66 of a flexible outer skin, a center sealing device 67 at the folding end, and an end sealing / cutting device 69 between inner envelopes can be used.

To supply the waste paper powder to the hopper 25, the waste paper powder crushed to a fine powder state by the shredders 14 and 17 is temporarily stored in the stocker 23 by air conveyance, and is connected to the upper end of the hopper 25 by the take-out fan 24. It is efficient to feed it to the hopper 25 by supplying it to the duct 19.

[0013]

The cushioning material 6 for packaging of the present invention manufactured by the method and apparatus described above is used by being filled in the space between the transported object and the transportation container. Filling element 1 for cushioning material according to the present invention
Is an aggregate of finely pulverized waste paper powder, that is, fibrous powder, and therefore it is easily deformed and rich in cushioning properties.
The impact acting on the transport container during transport is not transmitted to the contents.

The used cushioning material 6 can be directly discarded as general waste and can be incinerated. However, one side of the outer skin can be opened to discharge it to sewage such as tempura oil, waste oil, and used detergent. It is also possible to pour in an unsuitable liquid, absorb it with waste paper powder, discard it in that state, and incinerate it as general waste. Since waste paper powder absorbs about 10 times its own weight of liquid, it is also very effective as an absorber of waste liquid, and the cushioning material of the present invention is used as a cushioning material for articles delivered to general households and restaurants. If used, further reuse of the used cushioning material can be expected.

Since fibrous powder such as waste paper powder has a very small specific gravity, it easily floats in the air stream and is extremely difficult to package by a usual method. According to the method and apparatus of the present invention, the aggregate 1 can be formed without causing the used paper powder to be scattered around by dropping the used paper powder onto the rough tissue paper 2 having a negative pressure applied to the back surface.

The cushioning material for packaging must be one that can be manufactured inexpensively and in large quantities. The cushioning material 6 of this invention is
Since waste paper powder is used as the filling element 1, the material is extremely inexpensive and easily available. Further, according to the apparatus of the present invention, it is possible to continuously produce various sizes of cushioning material without manpower, and the cushioning material of this invention can be supplied inexpensively and in large quantities.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described based on the embodiments shown in the drawings. 3 to 6 showing an embodiment of the apparatus of the present invention, the used paper used as the material of the filling element passes through the metal detector 11 and, if metal is contained, is removed, While being pressed by the pressing roll 13 via the feeding belt conveyor 12, the particles are primarily crushed by the coarse crushing shredder 14, conveyed in the duct 16 by the air flow of the primary air blowing fan 15, and supplied to the fine crushing shredder 17. It The shredder 17 for fine crushing crushes the supplied waste paper into a fine powder state, and the crushed matter rides on the air flow of the secondary air blowing fan 18 and the cyclone 2 in the duct 19.
Lead to zero. The waste paper powder separated from the carrier air by the cyclone 20 is stored in the stock tank 23 through the chamber 21 with the inspection window and the rotary valve 22.

The waste paper powder in the stock tank 23 is sent out to the circulation duct 26 connected to the upper ends of the hoppers 25a and 25b by the air flow of the take-out fan 24. The circulation duct 26 passes through the upper ends of the hoppers 25a and 25b, and the second cyclone 2 provided in the stock tank 23.
The waste paper powder that has been guided to the No. 7 and separated by the second cyclone 27 is returned to the stock tank 23 through the chamber 28 with the inspection window and the rotary valve 29.

The waste paper powder flowing in the circulation duct 26 along with the air flow of the take-out fan 24 is hoppers 25a, 25b.
When it passes the upper end of, it falls into the hoppers 25a and 25b. The waste paper powder that has dropped into the hoppers 25a and 25b is sent downward by the feed belts 31a and 31b,
It falls from the drop openings 32a and 32b.

Below the drop port 32a of the first hopper 25a, a mesh belt 42a running around the first conveyor 41a runs, and the suction blower faces the drop port 32a with the mesh belt 42a sandwiched therebetween. The intake port 43a is open. First mesh belt 42a
Is wound around pulleys 44 and 45 at both ends and three tension pulleys 46 below, and a paper feed roll 47a having a belt-shaped tissue paper 2a wound upstream thereof.
Is pivotally supported. A pressing roller 48a is in contact with the upstream pulley 44 of the first conveyor with the mesh belt 42a interposed therebetween, and the band-shaped tissue paper 2a fed from the paper feed roll 47a is attached to the mesh belt 42a by the pressing roller 48. When collected and pulled out, and when passing under the drop opening 32a of the first hopper, the waste paper powder falling from the hopper 25a forms a stack 1a on the band-shaped tissue paper 2a (see FIG. 1 (a)).

On the other hand, a second conveyor 41b equipped with a second mesh belt 42b is also provided below the drop opening 32b of the second hopper 25b.
On the upstream side (the left side in the figure) of b, a second paper feed roll 47b wound with a second strip-shaped tissue paper 2b is provided, and the second strip-shaped tissue paper 2b is attached on the second mesh belt 42b. An intake port 43b of the suction blower that faces the pressing roller 48b and the drop port 32b is provided as in the case of the first hopper 25a. Then, similarly to the first mesh belt, the second tissue paper 2b is also placed on the second mesh belt 42b.
The waste paper powder dropped from the second hopper 25b is continuously accumulated on the upper side to form the second accumulated body 1b.

The second tissue paper 2b and the stack 1b stacked thereon are inverted when passing through the pulley 49 at the right end of the second conveyor 41b in the figure, and are turned upside down to turn over the first conveyor. It is superposed on the stack 1a on the first tissue paper 2a being fed by 41a (see FIG. 1 (b)). In this way, the hopper 25
Aggregate 1 made of waste paper powder dropped from a and 25b
a and 1b are strip-shaped tissue paper 2a above and below,
2b is attached and sent out between the first and second conveyors, and a pair of upper and lower belt conveyors 51a, 51
The press conveyor 51 formed by b is slightly compressed from above and below and brought into close contact with each other.

The stack 1 (a, b) sent out from the press conveyer 51 passes through a folding plate (former) 52 having folding guides on both sides, and on both sides of the upper and lower strip-shaped tissue papers 2a, 2b. The edges are bent, and then the folded both ends are pressed by the second press conveyer 53 to wrap up the stack 1 to form the yokan-like inner package 3 (see FIG. 1 (c)).

The yokan-shaped inner body 3 is then covered with the upper blade roll 5.
4a and the lower blade roll 54b, and is cut into a certain size by a cutter 54 formed by both (Fig. 1 (d)
reference). The cut inner envelope body 3 is then fed to the finger feed conveyor 55. Finger feed conveyor 55
As shown in FIG. 6, a chain 58, in which fingers 57 are erected at regular intervals on both sides of a central belt 56, is arranged. When the chain 58 travels diagonally upward at the entrance of a conveyor 55, 57 is inserted between the cut inner inclusions 3 and 3, and the inner inclusion 3 is inserted into the fingers 57.
Transport at the arrangement pitch of. The arrangement pitch of the fingers 57 is slightly longer than the cut length of the inner packet body 3, and the inner packet bodies 3, 3 are conveyed with a predetermined space therebetween.

The finger feed conveyor 55 functions as a package supply conveyor for the hermetic packaging device 60 provided downstream of the finger transport conveyor 55. The hermetic wrapping device 60 has a film roll 61 for outer skin such as a strip-shaped polyethylene film or laminated paper, and the outer skin film 5 unreeled from the film roll 61 is a tension roller 6
2, 63 and the guide bar 64 are guided to the package insert port 65 and covered on the individually supplied inner packet 3, and then both sides thereof are bent downward by the folding part 66, The bent end is sealed by the center seal device 67. A needle roller 68 is provided between the tension rollers 62, 63 and the guide bar 64,
Small holes are preliminarily punched in the supplied skin film 5. The needle roller 68 is one in which several needles are erected on the peripheral surface of the roller, and rotates in synchronization with the supply speed of the outer cover film 5 to punch a small slit-shaped hole in the outer cover film 5 with the needle.

A feed conveyor 68 is provided on the downstream side of the center seal device 67, and an end seal / cut device 69 is arranged on the downstream side thereof. The end seal and cut device 69 sandwiches the upper and lower outer skin films 5 and 5 between the inner envelope bodies 3 and 3 and heat-presses them, and cuts the outer skin film at the midpoint thereof (see FIG. 1 (e)). The cut packaging body 6 is discharged by the carry-out conveyor 70, and the packaging cushioning material 6 of the present invention having the internal structure shown in FIG. 2 is manufactured (see FIG. 1 (f)).

[0027]

INDUSTRIAL APPLICABILITY The cushioning material for packaging of the present invention described above uses waste paper powder as a filling element, and this waste paper powder cannot be used as a raw material for recycled paper. Since it can be manufactured using as a raw material, it is possible to reuse the waste paper that was conventionally discarded, and by using it as a substitute for the expanded polystyrene cushioning material, the problem of environmental pollution due to the production and incineration of expanded polystyrene can be reduced. ..

Further, by using the cushioning material of the present invention as a cushioning material for articles delivered to general households, restaurants, etc., one side of the outer skin of the cushioning material of the present invention is opened to remove waste liquid such as tempura oil and detergent liquid. If the waste paper powder, which is a filling element, is absorbed and then incinerated together with general waste, it is possible to reduce water pollution due to waste liquid.

Further, according to the method and apparatus of the present invention, it is possible to continuously produce a cushioning material containing waste paper powder as a filling element with high productivity, and to provide a large amount at low cost. In addition, since waste paper dust is scattered on the rough tissue paper such as tissue paper by applying negative pressure from the back side and then encapsulating it with the rough tissue paper, scattering of waste paper dust at the time of manufacturing is adopted. Can be prevented.

In addition, once the waste paper powder is once wrapped with rough textured paper,
Since it is sealed with an outer skin film and the outer skin film is provided with a small hole for previously providing air permeability, it is possible to prevent the outer skin from bursting due to the internal air pressure when the outer skin film is crushed. Also, since this small hole is pre-punched before wrapping the inner package, scattering of waste paper powder when air flows out from this small hole is prevented by the coarse tissue paper, and the cushioning material is damaged or cushioned during use. It is possible to prevent waste paper powder from flowing out of the material.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a manufacturing process of a cushioning material of the present invention.

FIG. 2 is a schematic sectional view of a cushioning material.

FIG. 3 is a view showing a device for crushing used paper and supplying used paper powder.

FIG. 4 is a side view showing a front stage portion of the device of the present invention.

FIG. 5 is a side view showing the latter part of the device of the present invention.

FIG. 6 is a perspective view showing an example of a separation conveyance device.

[Explanation of symbols]

 1 (a, b) Aggregate 2 (a, b) Band-shaped tissue paper 3 Inner package 4 Small hole 5 Outer skin 25 (a, b) Hopper 32 (a, b) Drop opening 41 (a, b) Conveyor 42 (a , b) Mesh belt 43 (a, b) Air inlet 47 (a, b) Paper feed roll 52 Former 54 (a, b) Cutter 55 Finger feed conveyor 60 Sealing and packaging equipment

Claims (3)

[Claims] 1. A crushed waste paper is used as the packing element (1), and the packing element (1) has a breathable rough tissue paper (2).
A non-breathable outer skin (5) with a small hole (4) for providing breathability, which is formed by wrapping with
A cushioning material for packaging, which is sealed with. 2. An aggregate (1) obtained by dropping waste paper powder or other fibrous powder onto a breathable rough tissue paper (2) while applying a negative pressure to the lower surface of the rough texture paper. The inner envelope body (3) is formed by wrapping it with paper (2), and the inner envelope body (3) is wrapped with a flexible outer skin (5) in which small holes (4) have been perforated in advance, and the flexible outer skin (5).
A method for manufacturing a cushioning material for packaging, characterized in that the inner package (3) is hermetically sealed by welding or adhering the opening of the. 3. A paper feed roll (47) for the strip-shaped rough textured paper (2a) on the upstream side of a conveyor (41a) wound with a mesh belt (42a).
a) is provided, and a hopper (25a) is provided to face the upper surface of the mesh belt (42a) to drop waste paper powder and other fibrous powders.The drop opening (32a) of this hopper (25a) and the mesh belt ( The air intake port (43a) of the suction blower is opened at a position facing each other with the mesh belt (42a) on the downstream side of the hopper (25a).
A second conveyor (41b) is provided to cover the belt from above and the mesh belt (4b) is provided on the downstream side of the second conveyor (41b).
There is a former (52) for folding both side edges of the strip-shaped rough tissue papers (2a) and (2b) conveyed by (2a), and the cutting machine (54) and the cutting machine (54) are provided on the downstream side of the former (52). Machine (54)
Characterized in that it is provided with a separation conveyance device (55) for transferring the conveyance bodies cut by the above in a state of being separated from each other, and a hermetic packaging device (60) using a flexible outer cover (5). , Equipment for manufacturing cushioning materials for packaging.