JPH06263170A - Multilayer corner pad made of single-faced corrugated board, and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide corner pads for packing, suited to mass production and easy to discard, by a method wherein belt-like corrugated boards are stuck together in a plurality of layers in a multilayer structure, and bending is made to the layered structure in L-shape section along the bending lines provided in the longitudinal direction, and bonding, fixing and cutting are applied to the structure with the state of bending kept as it is. CONSTITUTION:A plurality of belt-like single-faced corrugated boards 5, each of which is made up by cutting a single-faced corrugated board material 1 formed by sticking a liner board 3 to one side of a corrugated sheet 2 along the lines intersecting the furrows of the corrugated sheet 2, are stuck together in a plurality of layers 5A-5E and a multilayer stuck body 6 is formed. In this body, the belt-like single-faced corrugated board material 5E on the uppermost layer is laid inside out on the belt-like single-faced corrugated board material 5D with its corrugated sheet 2 facing the corrugated sheet 2 of the belt-like single-faced corrugated board material 5D. The corrugated boards 5A-5E are bent along the bending line 7 extending in the longitudinal direction, and stuck and fixed in definite form by hot air drying. After cutting the multilayer stuck body into specified sizes, the cut bodies are made to serve as corner pads.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when packing various kinds of objects to be packed, protects the corners of the objects to be protected from being damaged by applying the corners of the objects to be packed. For a corner pad, particularly for a single-sided corrugated board multi-layered corner pad and a single-sided corrugated board multi-layered corner pad formed by stacking a plurality of single-sided corrugated board raw materials in the thickness direction Manufacturing equipment.

[0002]

2. Description of the Related Art As is well known, when packing various kinds of objects to be packed, they are used for the purpose of protecting the corners of the objects to be packed so as not to damage the corners of the objects to be packed. The conventional corner pad is made of, for example, a molded product of a foamed synthetic resin such as Styrofoam.

This conventional corner pad made of a foamed synthetic resin is molded by a molding process using a molding die, has a fixed shape, and is different in order to adapt it to the corner portion of various kinds of objects to be packed. There was a very irrational problem that various forms had to be prepared.

Further, the conventional corner pad made of foamed synthetic resin has a problem that it is economically disadvantageous in terms of manufacturing cost because it is a molded product. Furthermore, the conventional corner pad made of foamed synthetic resin is
Since it is a molded product, it has a very serious problem in terms of disposal after use.

[0005]

Therefore, the present invention is
To provide an economically excellent multi-layered corner pad made of single-faced corrugated board and a manufacturing apparatus thereof, which has a relatively simple structure, is suitable for mass production, and can be formed relatively easily with a material that is easily available. It is in.

Further, the present invention provides a multi-layered corner pad made of single-faced corrugated board and a manufacturing apparatus for the same, which can be adapted to various corners of different forms in various objects to be packed without changing the extent to some extent. To provide.

Further, the present invention provides a multi-layered corner pad made of single-faced corrugated board and a manufacturing apparatus for the same, which is extremely easy to dispose of without any problems in disposal after use. Especially.

[0008]

In order to achieve the above object, the present invention specifically uses, as a raw material, a single-faced corrugated board material in which a liner paper is attached to one surface of a corrugated sheet. The single-sided corrugated board material is a strip-shaped single-sided corrugated board material obtained by cutting the single-sided corrugated board material in a strip shape along a line intersecting with the corrugation line of the corrugated sheet. Match and fold along the bending line that extends in the length direction,
In the folded state, the above-mentioned band-shaped single-faced corrugated cardboard material is fixedly bonded and fixed, and a single-faced corrugated cardboard multi-layered corner pad is formed by cutting and forming to appropriate dimensions in the length direction.

Furthermore, the present invention relates to a manufacturing apparatus for manufacturing the above-mentioned corner pad for single-sided corrugated cardboard, which feeds a single-sided corrugated cardboard raw material in which a liner paper is bonded to one surface of a corrugated sheet. A supply mechanism, a slitter mechanism for slitting the one-sided corrugated board raw material into a strip-shaped one-sided corrugated board material of a width dimension preset along a line intersecting the corrugation line of the corrugated sheet, and the slit-shaped one-sided corrugated board material. A width-shifting mechanism for spacing and guiding a predetermined distance in the thickness direction, and a gluing mechanism for applying an adhesive along the corrugated generatrix of the corrugated sheet on the corrugated sheet side of the strip-shaped single-faced corrugated board material. A pressing mechanism for stacking the strip-shaped single-sided corrugated board materials in a thickness direction in an overlapping manner and applying pressure, and a laminated strip-shaped single-sided corrugated board joined in the overlapping shape. Of a single-sided corrugated board multi-layered corner pad, which comprises a folding mechanism for bending the ruling material along the length direction, and a cutter mechanism for cutting the folded laminated strip-shaped single-sided corrugated board material into a predetermined length dimension. It constitutes a manufacturing apparatus.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A single-sided corrugated board multi-layered corner pad and a manufacturing apparatus therefor according to the present invention will be described in detail below with reference to specific embodiments shown in the drawings. 1A to 1C are schematic perspective views showing important parts of a manufacturing process of a specific example of a single-sided corrugated board multi-layered corner pad according to the present invention in accordance with procedures.

In the example shown in the drawings, the single-sided corrugated cardboard multi-layered corner pad according to the present invention basically uses a single-sided corrugated board material 1 obtained by laminating a liner paper 3 on one surface of a corrugated sheet 2. The single-sided corrugated board material 1 is formed by a laminated laminated body 6 of strip-shaped single-sided corrugated board materials 5 obtained by cutting the single-sided corrugated board material 1 into strips along a line 4 intersecting the corrugation lines of the corrugated sheet 2. In the present invention, the pitch and the like of the corrugated sheet 2 in the single-sided corrugated board material 1 are not limited to those shown in the drawings, but may be appropriately selected as necessary.

According to the embodiment shown in FIG. 1, the single-sided corrugated cardboard multi-layered corner pad has four strip-shaped single-sided corrugated board groups 5A, 5 which are cut from one single-sided corrugated board material 1.
It is composed of a laminated bonded body 6 of B, 5C and 5D and, for example, one strip-shaped single-sided corrugated board material group 5E separately prepared. In the present invention, the laminated laminated body 6
The present invention is not limited to the illustrated five-piece laminated body, and may be formed into an appropriate number of laminated laminated bodies as necessary.

In the present invention, the strip-shaped one-sided corrugated board material groups 5A, 5B, 5C, 5 for the laminated laminated body 6 are provided.
The width dimensions of D and 5E may be the same as the width dimension W, or, as shown in FIG. 1B, w ₁ , w ₂ (w ₁ + a),
w ₃ (w ₂ + a), w ₄ (w ₃ + a), w ₅ (w ₄ + a) (where + a is the thickness of the strip-shaped single-sided corrugated board, By designing such that it is set in advance by calculating the displacement dimension that occurs when the laminated laminated body 6 is bent, it is not necessary to perform the cutting alignment processing of the side edge after the bending processing described later. . As in the former, the strip-shaped single-sided corrugated board material groups 5A, 5B,
In the case where the width dimensions of 5C, 5D and 5E are the same width dimension W, the side edges are aligned and formed by the side edge cutting alignment processing after the bending processing described later.

In the present invention, the strip-shaped single-sided corrugated board material groups 5A, 5B, 5C, and 5D are separately prepared as shown in FIG. 1B, with each liner paper 3 facing up. Band-shaped single-sided corrugated board material 5E
Are stacked so that the corrugated sheets 2 face the corrugated sheets 2 of the strip-shaped single-faced corrugated board material group 5D.
With such a configuration, the laminated bonded body 6
Both the front and back surfaces can be formed as flat surfaces by the liner paper 3. In the present invention, one of the front and back surfaces of the laminated laminated body 6 may be composed of the corrugated sheet 2, or the front and back surfaces thereof may be composed of the corrugated sheet 2. Good.

In the present invention, the strip-shaped one-sided corrugated board material groups 5A, 5B, 5C, 5D and 5E are superposed by applying an adhesive along the corrugated ridges of each corrugated sheet 2 side. Is laminated and adhered to form a laminated laminated body 6.

The single-sided corrugated board multi-layered corner pad according to the present invention comprises the strip-shaped single-sided corrugated board material groups 5A, 5B,
5C, 5D, and 5E, in the process of drying the adhesive, in the process of drying the adhesive, the laminated laminated body 6 is folded along a folding line 7 extending in the length direction. The folding line 7 may be provided in advance by a splicing line printing process in the slitting process of the one-sided corrugated board material 1. The laminated laminated body 6 is
In the bending process, for example, it is dried with hot air and fixedly bonded and fixed. The bending angle is 90
It is not limited only to °, but can be changed as needed.

In the present invention, the laminated bonded body 6 is finally provided as a single-sided corrugated cardboard multi-layered corner pad 8 by subjecting it to a cutting process with an appropriate dimension in the length direction.

Further, in the present invention, FIG. 2A and FIG. 2B
As shown in FIG. 2, a V-cut portion 9 is provided on one side 8A of the single-sided corrugated cardboard multi-layered corner pad 8 and is bent along a fold line 10 to form a three-ridge line corner portion as shown in FIG. 2B. Get corner pad 11.

Next, the single-sided corrugated board multi-layered corner pad manufacturing apparatus 20 according to the present invention will be described in detail with reference to the concrete embodiments shown in FIGS. 3 and 4.
The single-sided corrugated board multi-layered corner pad manufacturing apparatus 20 according to the present invention has a raw material supply mechanism 21 for supplying a single-sided corrugated board raw material 1 in which a liner paper 3 is attached to one surface of a corrugated sheet 2. The raw material supply mechanism 2
The inlet side of 1 may be directly connected to a single-sided corrugated board manufacturing apparatus (not shown).

A slitter mechanism 23 including a joint print processing mechanism 22 is provided on the inlet side of the raw material supply mechanism 21. The slitter mechanism 23 has a width dimension W or w ₁ , w ₂ (w ₁ + a), w which is preset along a line intersecting with the corrugation line of the corrugated sheet 2 in the single-sided corrugated board raw material 1.
_The single-sided corrugated board raw material 1 is slit into the strip-shaped single-sided corrugated board material 5 at an interval of ₃ (w ₂ + a) and w ₄ (w ₃ + a). This is for printing a joining wire acting as a folding line 7 for folding, which will be described later, in the middle of the strip-shaped single-sided corrugated board material 5 along the length direction. The slitter mechanism 23 is composed of a rotary cutter 24 and a backup roller 25.

The strip-shaped single-sided corrugated board material 5 slit by the slitter mechanism 23 is used as a guide roller 26A,
26B, 26C, and 26D respectively branch into layers, and the width-shifting mechanism 27 (partially omitted in the drawing) aligns the strip-shaped single-sided corrugated board materials 5A, 5B, 5C, and 5D with their joint lines 7 aligned on the same line. It is designed so that it will be transported and guided.

A gluing mechanism 28 is provided at the subsequent stage of the width-shifting mechanism 27, and the strip-shaped single-sided corrugated board material 5 is provided.
For A, 5B, 5C, 5D, on each wave sheet 2 side,
An adhesive (not shown) is applied along the corrugated ribs 2a of the corrugated sheet 2. The gluing mechanism 28 includes a glue storage tank 29 and a glue winding roller 3 respectively.
0, a glue application roller 31 and a pressing roller 32.

The above-mentioned strip-shaped single-sided corrugated board material 5 which is pasted
A, 5B, 5C and 5D are the direction change rollers 33A and 3A.
3B, 33C, 33D to the direction change and turning drum 34. On the other hand, in the present invention, the strip-shaped one-sided corrugated board material 5E, which is the lowermost layer, is prepared in another strip-shaped one-sided corrugated board material supply mechanism 35, and through the direction-changing roller 36, the direction-changing and twisting drum 34. At the position, the strip-shaped single-sided corrugated board materials 5A, 5B, 5
You will be guided to the bottom layer of C and 5D.

The strip-shaped single-sided corrugated board materials 5A, 5B, 5
C, 5D, and 5E are stacked in the thickness direction so as to be stacked, and are pressed by the pressing mechanism 37. 3 and 4 are merely shown separately in the drawing, and in reality, the pressing mechanism 37 at the right end in FIG. 3 and the pressing mechanism 37 at the left end in FIG. 4 represent the same part. is there. The laminated bonded body 6 pressed by the pressing mechanism 37 is conveyed and supplied to the bending mechanism 38, and is bent along the joining line 7 during the conveying process. The folding mechanism 3
8 is composed of a plurality of sets of roller assembly components including an upper pressing roller 39, a lower pressing roller 40, a guide roller 41, and an angle determining roller 42. Of these, the angle determining roller 42 is configured to have a conical working surface 42a, and the conical angle gradually increases from the upstream side to the downstream side in the transport direction of the laminated bonded body 6. It is composed by.

In the process of passing the laminated bonded body 6 through the bending mechanism 38, that is, in the bending process, the adhesive is dried by the drying processing mechanism 43, and the laminated bonded body 6 is folded. Then, it is designed to be fixedly bonded and fixed. The drying processing mechanism 43 is based on hot air processing.

After the bending and the adhesive fixing process, the laminated bonded body 6 is cut by a cutting mechanism 44 at desired dimensional intervals in the lengthwise direction, and a single-sided corrugated cardboard multi-layered corner pad 8 as a final product. Served as. The cutting mechanism 44 is, for example, a flying cutter device, and can move the cutting position in the feeding direction of the laminated bonded body 6.

On the other hand, in order to form the corner pad 11 for the three ridge line corners as shown in FIGS. 2A and 2B, one side of the laminated bonded body 6 is cut before the above-mentioned cutting process. The V-cut portion 9 is subjected to a cutting process, and thereafter, the cutting mechanism 44 cuts it into a predetermined length and bends it along the fold line 10, so that the three ridge corner portions as shown in FIG. 2B are obtained. The corner pad 11 can be formed.

[0028]

The single-sided corrugated cardboard multi-layered corner pad according to the present invention having the above-mentioned structure has a relatively simple structure, is suitable for mass production, and is formed relatively easily by a single-sided corrugated board material that is easily available. In that respect, it is possible to provide an economically inexpensive multi-layered corner pad made of single-sided corrugated board, and in that respect, it can be said that it is extremely effective.

Furthermore, the single-sided corrugated cardboard multi-layered corner pad according to the present invention can be applied to various corner portions of different types of objects to be packed without any design change. In that respect, too, it can be said that it works extremely economically.

Furthermore, the single-sided corrugated cardboard multi-layered corner pad according to the present invention is composed only of the single-sided corrugated board material whose raw material is paper, and is extremely easy to be disposed of after use without any problem. It can be said that it is extremely effective in that it can be disposed of.

[Brief description of drawings]

FIG. 1A to FIG. 1C are schematic perspective views showing a main forming mode according to a manufacturing procedure of a specific example of a single-sided corrugated board multi-layered corner pad according to the present invention.

FIG. 2A and FIG. 2B are different embodiments of a single-sided corrugated board multi-layered corner pad according to the present invention,
It is a schematic perspective view which shows the example of the corner pad used with respect to the three ridgeline corners of a to-be-packaged object.

FIG. 3 shows a concrete example of a manufacturing apparatus for manufacturing the single-sided corrugated cardboard multi-layered corner pad according to the present invention, and shows the left half part of the apparatus for the convenience of drawing. It is a schematic perspective view.

4 shows a specific embodiment of a manufacturing apparatus for manufacturing a single-sided corrugated cardboard multi-layered corner pad according to the present invention, in which a pressing mechanism 37 is overlapped at the right end of FIG. It is a schematic perspective view which shows the left half part of the apparatus which is made to continue.

[Explanation of symbols]

 1 single-sided corrugated board 2 corrugated sheet 3 liner paper 4 line crossing the corrugated line 5 strip-shaped single-sided corrugated board 6 laminated laminated body 7 folding line 8 single-sided corrugated multi-layered corner pad 9 V-cut section 10 folding line 11 3 ridge line corner Corner pad 20 Multi-layer pasting corner pad manufacturing device 21 Raw material supply mechanism 22 Seam printing processing mechanism 23 Slitter mechanism 27 Width adjustment mechanism 28 Gluing mechanism 34 Direction change and shivering drum 35 Another strip-shaped one-sided corrugated board material supply mechanism 37 Pressing mechanism 38 Bending mechanism 42 Angle determining roller 43 Drying treatment mechanism 44 Cutting mechanism

Claims (3)

[Claims] 1. A raw material is a single-sided corrugated board material in which a liner paper is attached to one surface of a corrugated sheet,
The single-sided corrugated board material is a strip-shaped single-sided corrugated board material obtained by cutting the single-sided corrugated board material in a strip shape along a line intersecting with the corrugation line of the corrugated sheet, and a plurality of the band-shaped single-sided corrugated board materials are laminated in a thickness direction. In the folded state, the overlapping strip-shaped single-sided corrugated board material is fixed along the lengthwise direction by bending along a bending line extending in the lengthwise direction, and is cut and formed to an appropriate dimension in the lengthwise direction. The featured single-sided cardboard multi-layered corner pad. 2. The liner paper in each of the outermost strip-shaped single-faced cardboard materials out of the strip-shaped single-faced cardboard materials laminated in a stacking manner in the thickness direction is outwardly facing, respectively. Item 1. A single-sided corrugated cardboard multi-layered corner pad according to item 1. 3. A raw material supply mechanism for supplying a single-sided corrugated board raw material in which a liner paper is attached to one surface of a corrugated sheet, and the single-sided corrugated board raw material is preset along a line intersecting with the corrugation line of the corrugated sheet. A slitting mechanism for slitting a strip-shaped single-faced corrugated board material having a width dimension, a width-shifting mechanism for guiding the slit strip-shaped single-faced corrugated board material by arranging them at predetermined intervals in the thickness direction, and the strip-shaped single-sided corrugated board On the corrugated sheet side of the material, a gluing mechanism for applying an adhesive along the corrugated ridges of the corrugated sheet, and the strip-shaped single-sided corrugated board material are laminated in the thickness direction in an overlapping manner and joined by applying pressure. A pressure mechanism, a bending mechanism for bending the laminated strip-shaped single-sided corrugated board materials joined in a laminated shape along the length direction, and the folded laminated strip-shaped single-sided corrugated board material And a cutter mechanism for cutting into a predetermined length dimension.