JPH10305502A - Manufacture of material-recyclable structural panel substitutable for multi-laminated corrugated board plywood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain strength equal to plywood by forming multi-laminations by reducing strength difference between major axis X of flute winding direction, and minor axis Y of flute winding direction orthogonal to the X axis of a reinforced composite corrugated board having winding flutes. SOLUTION: A panel interlayer 2 is composed by stacking reinforced composite corrugated board cores 2, and an one-side corrugated board, where corrugated board multi-lamination interliners 3 are formed by bonding. And a surface water-resistant corrugated board liner 1 is formed through an adhesive on the exposed side of the cores 2. The directional property of the one-side corrugated board stacking is the same, and flutes are laminated so as to fit crests and roots, thereby, panel strength is improved. In the case that the different types of corrugated boards are multi-laminated, the major axis X direction of flute winding of reinforced composite corrugated boards, and parallel X axis direction of flute winding of ordinary corrugated boards are adjusted. And at the laminating of the same type of corrugated boards, crests and roots of the flutes are laminated to be fitted mutually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a structural panel which replaces ordinary plywood and concrete formwork plywood by multiply stacking corrugated cardboard with recyclable material resources.

[0002]

BACKGROUND OF THE INVENTION Ordinary plywood and concrete formwork plywood are:
Recycling of material resources is difficult and there is a problem of disposal as industrial waste. In addition, resources of Nanyang lumber suitable for plywood tend to be depleted, which limits resource utilization.

[0003] Corrugated cardboard multi-laminate products that are excellent in resource recycling for the purpose of replacing plywood are commercialized only for limited uses due to the limit of strength characteristics of corrugated cardboard. It has not yet been used as a general structural panel material in the construction method.

[0004] The conventional corrugated cardboard lamination has a maximum of three layers of triple wall as mass production, and a production apparatus capable of supplying a large number of more multi-layers has not been widespread.

[0005]

A general ordinary cardboard has a straight flute and an X parallel to the flute.
There is a difference in strength between the axial direction and the Y-axis direction orthogonal to the axis direction. Even when multiple layers are stacked, the bending strength in the Y-axis direction is weak and buckling is likely to occur.

The present invention uses a corrugated cardboard that reduces the difference in strength in the X-axis and Y-axis directions of a general corrugated cardboard, and can increase the integral strength of the panel by multiply laminating the same. It is an object of the present invention to provide a method for manufacturing a corrugated cardboard multi-layer panel having excellent strength.

[0007]

In order to achieve the above-mentioned object, a reinforced composite corrugated cardboard having strength characteristics different from that of a general cardboard is used. In this corrugated cardboard, the flutes meander, and the difference in strength between the meander major axis X-axis direction of the flute and the perpendicular meandering minor axis Y-axis direction is smaller than that of ordinary cardboard. As a result, the above-mentioned drawbacks in strength are eliminated. (Refer to the public information of Japanese Patent Publication No. 64-71738)

The reinforced composite corrugated corrugated cardboard is laminated in a multi-layered manner, and a corrugated cardboard having a straight flute is used at the center of the multi-layered corrugated cardboard. It is possible to laminate multiple types of corrugated cardboard using reinforced composite corrugated cardboard on both sides of the panel.

As a method of laminating in synchronization with corrugated paperboard sheets produced in large quantities at high speed, iron powder or ferrite, which is a fine particle generating heat at high frequency, is mixed into glue glue and fused together.

The material of the present invention is used paper and recycled pulp, and the adhesive used is starch, starch and the like which is excellent in recycling. Reduce environmental pollution by waste and solve environmental problems.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a reinforced composite corrugated cardboard multi-layer panel.
Panel middle layer is a reinforced composite corrugated corrugated cardboard box 2
Then, the single-sided corrugated cardboards on which the corrugated cardboard multi-layered intermediate liners 3 are bonded are stacked, and the surface water-resistant corrugated cardboard liner 1 is formed with an adhesive on the side where the inner shin is exposed.

In order to increase the crushing strength and the water resistance of the panel surface according to the conditions of use, a surface water resistant corrugated cardboard liner 1 having better strength characteristics than the corrugated cardboard multi-layered intermediate liner 3 is formed with an adhesive.

The direction of stacking the single-faced cardboard is the same in all directions, and the flutes are stuck together so that their peaks and valleys coincide, thereby increasing the strength of the panel.

In the embodiment shown in FIG. 2, an ordinary corrugated cardboard lining 6 having a straight flute is used at the center of the multi-layer, and a reinforced composite corrugated cardboard is provided on both side surfaces of the panel where compression and tensile strength are required. It is sectional drawing which shows the Example of the panel which multiply laminated | stacked the different cardboard using the middle shin 2.

In order to stack different types of corrugated cardboard in multiple layers, it is necessary to align the flute meandering major axis X-axis direction of the reinforced composite corrugated cardboard with the X-axis direction parallel to the flute of ordinary corrugated cardboard. Laminated so that the peaks and valleys match.

Since the present invention is configured as described above, it has the following effects.

The weight of this panel having the same strength as plywood has the effect of reducing transportation costs, making site construction more efficient, and improving economic efficiency by being about 10% lighter than plywood to be replaced.

The thickness of the panel can be freely produced by the number of laminated cardboards. Compared with the concrete form plywood to be replaced, use is made of an extremely thick panel which secures the strength of the section modulus which does not require a pier. This makes it possible to significantly reduce the number of execution steps, thereby improving the execution efficiency and economic efficiency.

This panel, which has an air layer in the middle, has excellent heat insulation properties, and can be used as a disposable heat-insulating concrete formwork or a heat-insulating structure that can be framed using only this material. It is possible to omit the process, which has the effect of improving the execution efficiency and economic efficiency.

The panel material is cardboard made of recycled paper and can be reused, so that the consumption of forest resources of plywood as a substitute is reduced, and construction and furniture disposal, such as concrete formwork plywood, is a representative. Has the effect of reducing environmental pollution due to

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a reinforced composite corrugated cardboard multi-layer panel.

FIG. 2 is a cross-sectional view illustrating an embodiment of a panel in which different types of cardboard are stacked in multiple layers.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Surface water-resistant corrugated cardboard liner 2 Reinforced composite corrugated body corrugated medium liner 3 Corrugated cardboard multi-layered intermediate liner 4 Flute parallel (meandering long axis) X axis 5 Flute straight line (meandering short axis) Y axis 6 Normal corrugated medium liner

Claims (3)

[Claims] 1. A method of manufacturing a corrugated cardboard multi-layer panel using a reinforced composite corrugated corrugated cardboard bobbin 2 with meandering flutes. 2. Production of different types of multi-layered corrugated cardboard using a normal corrugated cardboard core 6 with a straight flute at the center of the multi-layer corrugated cardboard and a reinforced composite corrugated corrugated cardboard core 2 on both sides of the panel. Method. 3. A manufacturing apparatus for collectively stacking cut sheets produced by a corrugator in order to produce multi-layered corrugated cardboard in an application in place of plywood to produce building materials of standard dimensions.