JP3087245B1 - Manufacturing method of paper buffer plate - Google Patents

Abstract

The present invention provides a paper buffer plate 10 having improved bending strength and an excellent buffer function. SOLUTION: Single-sided cardboards 10A and 10B are transferred in Fa and Fb directions orthogonal to the extending direction of the step of core papers 13 and 14, respectively. Adhesive B on each step top 13a
Is applied to each step 13a and the other single-sided cardboard 1
0B liner 12 is contacted with each other, and while maintaining this contact state, in a gap defined between the core paper 13 and the liner 12, an air blowing port 33 and an air inlet 34 arranged on both sides in the width direction. The adhesive B is dried by forcibly flowing dry air between the liners 11 and 12 and the core papers 13 and 1.
4 are alternately stacked and bonded to obtain a paper buffer plate 10 in which the directions of the steps of the core papers 13 and 14 are parallel to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a paper cushion plate used as an insole of a cardboard box for packing food.

[0002]

2. Description of the Related Art When packing fruits such as apples to be transported as commodities in a cardboard box, a buffer plate 104 is used as schematically shown in FIG. In FIG. 5, reference numeral 101 denotes fruits as commodities, 102 denotes a cardboard box, and 103 denotes a pack in which recesses 103a into which the fruits 101 enter are formed at regular intervals in the vertical and horizontal directions. That is, fruit 101
Are packed in the cardboard box 102 in a vertically stacked manner in a state of being arranged in the respective concave portions 103a of the pack 103, and the buffer plates 104 are interposed between the respective stages.

[0003] The cushioning plate 104 flattens the surface on which the pack 103 is laid, and absorbs the impact of the transportation process to produce the fruit 1.
No. 01 is used to prevent damage. Conventionally, a cardboard made of single-sided cardboard has been used. One-sided cardboard is a well-known piece of flat paper (called a liner)
And a sheet of paper material (referred to as core paper) that is repeatedly bent in a wavy shape, and the buffer plate 104 made of single-sided corrugated cardboard has a wavy step formed by the core paper and a lower side. It is laid so that it becomes.

[0004]

The following problems have been pointed out in the above-mentioned conventional shock absorbing plate 104. In other words, in recent years, in order to automate packing, the setting operation of the buffer plate 104 on the cardboard box 102 has been performed by the vacuum chuck device 105. Uses a relatively thick paper material of about 115 g / m ² , but has a low bending strength in a direction orthogonal to the extension direction of the corrugated step portion of the core paper, and is attracted to the vacuum chuck device 105 for conveyance. As a result, as shown in FIG. For this reason, there is a risk that the toner may not be firmly sucked and may drop during the conveyance or may enter the cardboard box 102 in a broken state.

As a method of solving such a problem, it is conceivable to use a material having a high bending strength (for example, a thick material) as a material of a single-sided corrugated cardboard liner or a core paper. The buffer plate 104 becomes hard, and its buffer function is impaired. In addition, in order to improve the cushioning property, a cardboard made of a foamed resin bonded to a single-sided cardboard has also been developed. However, such a buffer plate must be disposed of as non-combustible garbage after use. The problem which has a bad influence on is pointed out.

SUMMARY OF THE INVENTION The present invention has been made under the above circumstances, and it is a technical object of the present invention to provide a paper buffer plate having improved bending strength and excellent buffer function. It is in.

[0007]

As means for effectively solving the above-mentioned technical problems, a paper buffer according to the present invention is provided.
The manufacturing method of the board is to use multiple single-sided cardboard
Transfer in the direction perpendicular to the extension direction of the paper wavy step
During the transfer process, each single-sided cardboard core
An adhesive is applied to the top, and each of the above-mentioned adhesives is applied.
Contact the top of the corrugation with the other single-sided cardboard liner
Between the core paper and the liner while maintaining this contact state.
Empty the gap defined between them in the direction orthogonal to the transfer direction.
It is intended to distribute the energy.

[0008] According to the manufacturing method of the present invention, the flat paper material
And multiple liners, and bend repeatedly in a certain direction
Of the same number of core papers as the liner
How to extend the corrugated step of each core paper
A paper buffer plate with directions parallel to each other is obtained. And this one
According to the method, since the adhesive dries in a short time to develop the adhesive strength, it is not necessary to increase the contact pressure to prevent peeling. As a result, even when a thin paper material is used, the core paper can The step top is not crushed, and a paper buffer plate having excellent buffering properties can be obtained.

[0009]

Figure 1 DETAILED DESCRIPTION OF THE INVENTION, manufacturing by the method of the present invention
It shows a manufactured paper buffer plate. Ie this paper
The cushioning plate 10 has a flat shape, which will be described later.
2, two liners 11 and 12 made of a flat paper material, each of which is a square or a rectangle having a size insertable into the two, and two paper materials made of a paper material formed with a wavy step portion bent repeatedly in a wavy manner. The core papers 13 and 14 are alternately stacked and bonded. The extension direction of the corrugated step of the core paper 13 sandwiched between the liners 11 and 12 and the extension direction of the corrugated step of the core paper 14 forming one surface of the paper buffer plate 10 are parallel to each other. I have.

For the liners 11, 12 and the core papers 13, 14, a relatively thin paper material of, for example, about 50 g / m ² is used. Of these, the liners 11 and For the core paper 14, for example, a kraft material is used.

As shown in FIG. 2, the paper buffer plate 10 is provided with a fruit 101 such as an apple and the like in each recess 1 of the pack 103.
03a, in a state where the fruits 101 are arranged vertically and horizontally in a stacked manner in the cardboard box 102, the laying surface of the pack 103 is flattened, and the fruit 101 is absorbed by absorbing the shock in the transportation process. Is inserted between each stage so as not to be damaged. In this case, it is laid so that the flat surface made of the liner 11 is on the upper side, and the wavy step portion made of the core paper 14 is on the lower side.

The work of laying the paper buffer plate 10 on the cardboard box 102 is performed by the vacuum chuck device 105.
That is, the paper buffer plate 10 is conveyed from a predetermined location by being vacuum-adsorbed on the flat upper surface of the liner 11 in a substantially horizontal state by the vacuum chuck device 105, and when the paper buffer plate 10 is inserted into the cardboard box 102, It is released from the vacuum chuck device 105.

The paper buffer plate 10 has a truss structure in which the core paper 13 is bonded between the two liners 11 and 12, so that the bending strength of the paper buffer plate 10 is remarkably superior to that of single-sided cardboard. It has become. For this reason, the vacuum chuck device 105 does not easily bend during the transfer process.
From being accidentally dropped from the cardboard box 102
Can be reliably set.

As described above, the paper buffer plate 10 having the above structure has a cardboard box 102 such that the flat surface of the liner 11 is on the upper side and the step of the core paper 14 is on the lower side.
Is set to In this state, since each convex surface 14a of the core paper 14 made of a thin paper material serves as a buffer surface for the fruit 101 in the lower stage, excellent buffering properties can be obtained.

The paper buffer plate 10 of the above embodiment is manufactured by laminating two single-sided cardboards.
FIG. 3 schematically shows the manufacturing method, that is, in this figure, reference numerals 10A and 10B are single-sided cardboard, and one single-sided cardboard 10A is a liner 11 and a core paper 13 which are bonded together. Similarly, the other single-sided corrugated cardboard 10B has a liner 12 and a core paper 14 bonded together.

Each of the single-sided cardboards 10A and 10B can be manufactured by a known manufacturing apparatus as shown in FIG. 4, for example. That is, in FIG.
Reference numeral 1 denotes a paper material for the liner 11 or 12, and reference numeral 22 denotes a paper material for the core paper 13 or 14, each of which is wound in a roll shape. First, the core paper material 22 is transported (longitudinal direction) by being engaged with a pair of step-forming rollers 23 and 24 having a large number of grooves extending in the axial direction on the outer peripheral surface formed in a wavefront shape. A wavy step extending in a direction (width direction) perpendicular to the direction is bent.

Medium paper material 2 having a wavy step bent
In the process of being fed while being wound around one of the step forming rollers 24, an adhesive B made of, for example, starch-based glue is supplied to the top of each step from an adhesive tank 25 via a roller 26. The adhesive B is applied by the paste roller 27. Then, further downstream thereof, the press roller 28
As a result, the liner paper 21 is pressed and dried.
Thereby, the single-sided cardboard 10A or 10B is continuously manufactured.

Returning now to FIG. 3, the single-faced cardboards 10A and 10B manufactured as described above are first polymerized in the directions to be superimposed on each other as indicated by thick arrows Fa and Fb, respectively. Sometimes the core paper 13 in one single-sided cardboard 10A is
It is sent to face the liner 12 at B. The transfer speed at this time is, for example, 35 to 50 m / min.
Also, the core papers 13 and 14 of the single-sided cardboards 10A and 10B.
As described above, the step-forming rollers 23, 24
The corrugated step is formed in a direction perpendicular to the transport direction, that is, the corrugated step of the core paper 13 and the corrugated step are formed. Are parallel to each other.

In the process of being transferred in the Fa direction, the one-sided corrugated cardboard 10A is provided with a pressing roller 29 and, for example, a starch-based glue, which is disposed in parallel with the pressing roller 29 and is supplied from an adhesive tank (not shown). The adhesive B is passed between the gluing roller 30 to which the adhesive B is supplied and the adhesive B is applied to each step top 13a of the core paper 13 of the single-sided cardboard 10A. The pressing roller 29 contacts the liner 11 of the single-sided cardboard 10A,
The gap between the pressing roller 29 and the gluing roller 30 is set so that the gluing roller 30 comes into contact with the core paper 13 but makes light contact so that the step tops 13a do not collapse.

The one-sided corrugated cardboard 10A in which the adhesive B is applied to each corrugated top 13a of the core paper 13 and the other one-sided corrugated cardboard 10B sent in the direction of superimposing the same are slightly smaller than the sum of their thicknesses. Through a narrow gap between the conveyors or roller rows 31 and 32 arranged in parallel with each other. As a result, the core paper 13 in the one-sided corrugated cardboard 10A becomes the corrugated top 13a to which the adhesive B is applied.
Are superimposed on each other in a state in which they are lightly in contact with the liner 12 of the other single-sided cardboard 10B, and are sent in the direction indicated by the thick arrow Fc while maintaining this state.

A single-faced cardboard 10 fed in the Fc direction in a state of being superimposed by a conveyor or roller rows 31 and 32
On one side in the width direction of A, 10B, there is disposed an air outlet 33 which is open in a shape extending elongated along the feed path between the conveyor or the roller rows 31, 32, and a similar opening is provided on the other side. An intake port 34 having a shape is arranged. The blower port 33 is connected to a discharge port of a blower (not shown), and the intake port 34 is connected to a suction device (not shown). The air outlets 33 facing each other
The length L of the intake port 34 in the Fc direction is, for example, about 1 m.

Single-faced cardboard 10A, 1 superposed on each other
As shown in FIG. 1, between the liner 11, the core paper 13, the liner 12, and the core paper
A number of gaps G <b> 1 to G <b> 3 that open to both sides in the width direction are defined along the wavy steps 3 and 14. Therefore, in the process in which the single-faced cardboards 10A, 10B pass in the Fc direction between the conveyors or roller rows 31, 32, the dry air blown out from the blower port 33 is subjected to the clearances G1 to G.
3 and is sucked into the intake port 34.

That is, by blowing air from one side in the width direction of the single-faced cardboards 10A and 10B and sucking air on the other side, the air flows reliably through the narrow gaps G1 to G3. Core paper 1
3, the adhesive B interposed between the contact surface between each step top 13a and the liner 12 of the other one-sided cardboard 10B is dried in a short time to develop an adhesive force. For this reason, the single-sided cardboard 10
A and 10B are sent out from between the conveyors or roller rows 31 and 32 in a state where they are bonded to each other, and further cut to a predetermined size by a cutting device (not shown), whereby the paper buffer plate 10 is obtained.

According to this manufacturing method, since the adhesive B dries in a short time and exhibits adhesive strength as described above,
Single-sided cardboard 10A, 1 to prevent peeling of the adhesive surface
There is no need to increase the contact pressure of the conveyor or roller rows 31, 32 with respect to OB. For this reason, the step tops 13a and 14a of the core papers 13 and 14 are hardly crushed, and the gap G
1 to G3 are also forced into the step top 1
It has the effect of preventing the collapse of 3a, 14a. As a result, it is possible to obtain a paper buffer plate 10 having excellent buffer properties using a relatively thin paper material of about 50 g / m ² .

In order to form a paper buffer plate having a large bending strength, the extending direction of the step portion of the core paper 13 sandwiched between the liners 11 and 12 and the one side of this paper buffer plate 10 It is conceivable to bond the single-sided cardboards 10A and 10B so that the extending direction of the step portion of the core paper 14 is orthogonal to each other. However, such a structure is difficult to manufacture due to the relationship between the feed direction of the single-sided cardboards 10A and 10B and the direction of the step of the core paper. On the other hand, the paper cushioning plate 10 of the above embodiment can be easily manufactured by the above-described steps, and is equivalent to the one in which the extending directions of the step portions of the core papers 13 and 14 are attached to be perpendicular to each other. Buffer performance can be realized.

[0026]

According to the method of manufacturing a paper buffer plate according to the present invention,
And a liner made of flat paper
It is made of a paper material that is repeatedly bent in a wavy manner and has the same number as the liner
The core papers are alternately stacked and laminated, and the core papers are
Paper buffer plates with the extending directions of the wavy steps parallel to each other are obtained.
Intended to be, since drying in a short period of time the adhesive is forced circulating air in the gap between the liner and corrugating medium, it is not necessary to increase the pressure contact force for adhesion, the thinner sheet material When used, a buffer plate having a good buffer function can be obtained, and an effect of being incinerated after use is realized. And the paper buffer plate obtained by this manufacturing method,
Flexural strength in the direction perpendicular to the extension direction of the step of the core paper
Because of the increase in
It is hard to bend and falls, and it is difficult to set
Can be prevented .

[Brief description of the drawings]

FIG. 1 shows a paper buffer plate manufactured by the method of the present invention .
It is to partial perspective view.

FIG. 2 is an explanatory view schematically showing a usage example of the paper buffer plate .

FIG. 3 is an explanatory view schematically showing a method of manufacturing a paper buffer plate according to the present invention .

FIG. 4 is an explanatory view schematically showing a step of obtaining a single-sided corrugated cardboard in the method of manufacturing a paper buffer plate .

FIG. 5 is an explanatory view schematically showing a conventional paper buffer plate and an example of its use.

FIG. 6 is an explanatory view schematically showing a state of occurrence of bending in a process of transporting a paper buffer plate according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Paper buffer plate 10A, 10B Single-sided corrugated cardboard 11,12 Liner 13,14 Core paper 13a, 14a Step top 33 Blow port 34 Inlet port 30 Glue rollers G1-G3 Gap

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B65D 57/00 B31B 1/04 B31F 1/24 B31F 1/28 B65D 81/14

Claims (1)

(57) [Claims] 1. A plurality of single-sided cardboards each having a core paper
Transport in the direction perpendicular to the extension direction of the wavy step,
During the transfer process, the top of each single-sided cardboard core
An adhesive is applied to each of the tops of the steps to which the adhesive has been applied.
Part and the other single-sided cardboard liner are in contact with each other,
While maintaining this contact state, the gap between the core paper and the liner
Allow air to flow through the gap in a direction perpendicular to the transfer direction
A method for producing a paper buffer plate, characterized in that: