JP2799423B2 - Corrugate manufacturing method, transport / storage method, and corrugated cardboard structure manufacturing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a corrugate manufacturing method, a transport / storage method, and a corrugated cardboard structure manufacturing method.

[Conventional technology]

Corrugates are generally processed as the core of corrugated cardboard, and in the case of double-sided corrugated cardboard, a liner is attached to the front and back of the corrugated corrugation at the top, and the corrugated corrugated shape makes the corrugated cardboard strong, heat-insulating and lightweight. The characteristics such as are exhibited.

The corrugate is one member constituting the corrugated cardboard as described above, and is processed in the single facer portion by a corrugated machine for producing corrugated cardboard.

Thus, corrugates can be advantageously manufactured by corrugated cardboard manufacturers by operating only the single facer portion of the corrugating machine.

However, since corrugates have special properties due to their shapes as described above, corrugates are increasingly being used not only for corrugated cardboard but also for the manufacture of other products utilizing such properties. For example, the cardboard structure is adhered to cardboard, a metal plate, a plywood, or a synthetic resin sheet, and its corrugated cardboard structure is used for not only packaging materials but also daily goods, vehicle ceiling materials, building materials, and the like.

In this case, as the adhesive, a special adhesive having characteristics such as water resistance, weather resistance, and heat resistance is often used instead of a commonly used constarch.

When a special adhesive is applied to an existing corrugating machine and manufactured, the characteristics of the adhesive differ depending on the special adhesive, so that a great deal of time is required for switching loss of a glue roll and the like and cleaning.

On the other hand, when the material to be affixed to the corrugate is a plate-like material such as the above-mentioned cardboard, metal plate, plywood, synthetic resin sheet, etc., it is impossible to manufacture those cardboard structures by a corrugating machine. Was.

The manufacture of such cardboard structures is also made by cardboard manufacturers, but in special cases by the manufacturers of the special cardboard structures. In that case, only the corrugate is purchased separately from the corrugated cardboard manufacturer that owns the corrugate machine.

[Problems to be solved by the invention]

Under the circumstances described above, a corrugated cardboard manufacturer who owns a corrugating machine provides only a corrugating machine in response to a request from another company. In this case, the corrugated cardboard manufacturer processes only the corrugated material using a corrugating machine, winds it up, and transports and stores it.However, according to the corrugated material processing alone, the corrugated shape rebounds due to its material and thickness. There is a problem that the step forming cannot be held cleanly due to the return due to the tension and the tension at the time of winding.

In addition, even in the case of a corrugated cardboard structure manufacturer, when the corrugate is rewound or bonded to another material such as cardboard, there is also a problem that the step molding is broken due to the additional tension and the like.

The present invention has been made in view of the above circumstances, and provides a method of manufacturing a corrugate and a method of manufacturing a corrugated cardboard structure in which, when only a corrugate is processed by a corrugate machine, the shape of the corrugated corrugated step does not occur. It is intended.

[Means for solving the problem]

As a result of repeated experiments and researches to achieve the above object, the present inventors have focused on the fact that the corrugated corrugated form does not collapse in the form of single-sided corrugated cardboard, and have completed the present invention.

That is, the corrugate manufacturing method and the transport / storage method according to the present invention are such that when the corrugate is processed in the corrugate machine, the lead liner is temporarily adhered to the top of the corrugate so that the lead liner can be peeled off, and the temporary single-sided corrugated cardboard is formed with the lead liner. It takes a form.

According to the method for manufacturing a corrugated cardboard structure according to the present invention, in a method for manufacturing a corrugated cardboard structure in which one surface of a corrugate is bonded to another material at the top, a lead liner is temporarily provided on the top of the other surface of the corrugate in advance. The lead liner is detached after bonding the step top on one side of the corrugate to another material while taking the form of a temporary single-sided cardboard with the lead liner.

[Action]

Since the corrugate manufacturing method and the transport / storage method are configured as described above, even if a corrugated material having a strong repulsive property or thickness is used, the repulsive force is stopped by the lead liner, so processing is performed. Sometimes the step forming does not collapse. In addition, when manufacturing, transporting and storing corrugates, they must be wound up, cut short, and stacked, but even if tension is applied at that time, the tension is received by the lead liner. Therefore, the corrugate does not extend, and the step forming is kept neatly in the formed state.

Since the temporary single-faced cardboard has the structure of a normal single-faced cardboard, it can be advantageously manufactured in the single facer portion of the corrugating machine. However, it is not inconsistent with the gist of the present invention to manufacture by another method. For example, a lead liner may be adhered to one surface after corrugating.

Here, the lead liner refers to a liner that is temporarily bonded to the corrugated step top in order to keep the corrugated step molding clean.

The following are examples of the material of the lead liner.

(1) Paper laminated with a film of polyethylene or polypropylene resin or the like With such a laminated paper, the film can be temporarily adhered to the top of the corrugate by heat welding the film. In the case of polypropylene having a high melting point, a temporary adhesive state that can be peeled is easily obtained.

(2) Paper coated with a temporary adhesive, for example, a soft adhesive. (3) Ordinary cardboard cardboard. In this case, the paper and the step top, or any one of them, are temporarily bonded while the temporary adhesive is applied. Recently, an adhesive or the like capable of repeating bonding and peeling many times has been developed, and it is more preferable to use such an adhesive.

The following can be cited as materials for the corrugate.

Metal sheet (iron, copper, aluminum, stainless steel, etc. and their composite materials) Synthetic resin sheet (polypropylene, polyethylene, polyester, polystyrene and their foam materials, and their composite materials) Paper, interleaving paper Cardboard structure manufacturing method Since the above is configured as described above, even if a tension is applied when the corrugate is bonded to another material, the tension is received by the lead liner, and the corrugation is prevented from elongating, so that the step molding is not collapsed, It is kept clean in the molded state.

Further, even if another material is curved, the corrugate can be easily applied to the curved surface by the guidance of the lead liner and adhered to the curved surface while maintaining the same pitch.

Other materials include, for example, the following.

(1) Metal sheet, synthetic resin sheet, paper, plywood (similar to the corrugated material) (2) Plywood (plywood, concrete panel, particle board, fiber board, gypsum board, etc.) [Example] Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a single facer portion of a corrugating machine as a corrugating manufacturing apparatus, in which one of a pair of step rolls 1 and 1 meshing with each other has a glue roll 2 and a press roll 3 on one of the step rolls 1. Are bonded, and the glue tank 4 contains a soft adhesive. 5 is a supply roll of corrugated base paper, 6 is a supply roll of a lead liner, and 7 is a take-up axis of a temporary single-sided cardboard.

The corrugated base paper 8a fed from the roll 5 to the two-stage rolls 1, 1 is formed into a stage, a soft adhesive is applied to the top of one side thereof, and the lead liner 9 supplied from the roll 6 is pressed by a press roll. Adhered by 3 and corrugated roll 1
The temporary single-faced corrugated cardboard 10 is fed out from between the press roll 3 and the temporary single-faced corrugated cardboard 10, and then wound around the winding shaft 7.

In the production of ordinary corrugated cardboard, the corrugated rolls 1 and 1 are used to gelatinize starch paste (containing starch).
However, in the case of this embodiment, since the adhesive is used for adhesion, heating of the step rolls 1 and 1 is not required.

On the other hand, when using starch paste, it is possible to make the gelatinization of the starch paste inadequate by heating it at a lower temperature than usual, thereby creating a soft adhesive state.

FIG. 2 shows the temporary single-sided cardboard 10 manufactured as described above.
The lead liner 9 is adhered to the corrugated top of one side of the corrugate 8 in the same manner as a normal single-sided cardboard, but since the adhesion is made by a soft adhesive, the lead liner 9 can be peeled off. It is.

The take-up shaft 7 of the temporary single-faced cardboard 10 may be provided at a location following the double facer portion. In that case, the temporary single-faced cardboard 10 is passed through the double facer portion as it is. Further, after passing through the double facer portion, cutting may be performed by a cutter provided at an end portion.

FIG. 3 shows a temporary single-faced corrugated cardboard 10 in which a heat-welding film 12 of polypropylene is laminated on one surface of the lead liner 9 and the lead liner 9 is temporarily bonded to the corrugate 8 by the heat welding. The glue roll 2 is unnecessary, but the step rolls 1 and 1 are heated for heat welding. The heating temperature is around 150 ° C.

FIG. 4 shows a state in which the corrugate 8 is adhered to another material 13 and then the lead liner 9 is peeled off. The other material 13 is an aluminum plate. Thereby, a lightweight and highly heat-insulating aluminum building material is manufactured as the cardboard structure F.

The corrugated cardboard structure can be continuously mass-produced by a manufacturing apparatus. The manufacturing apparatus has a structure similar to the double facer portion of the conventional corrugating machine, but additionally, a lead liner peeling device is provided for heat. The peeling device can be composed of, for example, a peeling roll and a winding section of a lead liner.

FIGS. 5 and 6 each show another example of the corrugated cardboard structure piece. In each case, the other material 13 to which the corrugate 8 is adhered has a curved surface. Also, the corrugate 8 can be adhered by the guidance of the lead liner, and at this time, the step forming of the corrugate 8 never loses its shape or the pitch is out of order.

In the above case, the other material 13 is curved in one direction,
Even in the case of curving in two directions, it can be relatively easily bonded by the guidance of the lead liner 9.

〔The invention's effect〕

Since the present invention is as described above, the following effects are remarkably exhibited.

According to the corrugate manufacturing method and the transportation and storage method,
In the corrugating machine, when processing the corrugate, the lead liner is temporarily adhered to the top of the corrugate so that it can be peeled off, and it takes the form of a temporary single-sided corrugated cardboard with the lead liner. During or during transportation / storage, the corrugated shape does not return due to repulsion, and production, transportation, and storage can be performed while maintaining the step molding in a predetermined clean form.

According to the method of manufacturing a corrugated cardboard structure, in a method of manufacturing a corrugated cardboard structure in which one surface of a corrugate is bonded to another material at the step top, a lead liner is temporarily bonded in advance to the step top of the other surface of the corrugate. After adhering the corrugated top of the corrugate to another material while taking the form of temporary single-sided cardboard with the lead liner, the lead liner is removed, so it can be adhered to other materials without breaking the step molding Even if the bonding surface is a complicated curved surface, the bonding can be easily performed by guiding the lead liner. The same can be said for the manufacturing method of the double-faced cardboard structure.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is an explanatory view of an apparatus for manufacturing a corrugate, FIGS. 2 and 3 are cross-sectional views of a corrugate, respectively, and FIG. 5 to 7 are sectional views of different cardboard structures. 8 ... corrugated, 9 ... lead liner 10 ... temporary single-sided corrugated cardboard, 13 ... other material F ... corrugated cardboard structure

Claims (4)

(57) [Claims] In a corrugating machine, when a corrugate is machined, a lead liner is temporarily adhered to a step top on one surface of the corrugate so as to be peelable, and a corrugated cardboard is formed with the lead liner. Production method. 2. The corrugating machine according to claim 1, wherein when the corrugate is machined, a lead liner is temporarily adhered to the step top on one side of the corrugate so as to be peelable, and a temporary single-sided cardboard is formed with the lead liner. Transportation and storage method. 3. A method for manufacturing a corrugated cardboard structure in which one surface of a corrugate is bonded to another material at the step top, wherein a lead liner is temporarily bonded in advance to the step top of the other surface of the corrugate.
A method for manufacturing a corrugated cardboard structure, comprising: bonding a corrugated surface, a corrugated top, and another material while taking the form of a temporary single-faced cardboard with a lead liner, and then removing the lead liner. 4. A method of manufacturing a corrugated cardboard structure in which one surface of a corrugate is bonded to another material at the step top, wherein a lead liner is temporarily bonded in advance to the step top of the other surface of the corrugate.
After bonding the corrugated top of one side and other materials while taking the form of temporary single-sided cardboard with the lead liner, remove the lead liner and glue the second material to the other side of this corrugate A method for producing a corrugated cardboard structure.