JPH09226028A - Synthetic-resin made hollow board processed by forming overlay around its periphery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease factors for generating dangers by applying hot melting of a polymer substance of a thermoplastic resin or an adhesive on the sides and corners where edge sides and corners of a hollow board of a raw material are directly exposed in a hollow board product to provide and raise overlay so as to make roughly spherical mass-like shape, solidifying these and hiding and covering thereby blade-like converting element parts of sheet end sides and rib end sides and sharp dangerous condition converting element parts of the top end of the corner parts. SOLUTION: On the board peripheral edge sides of a hollow board 1 made of a themoplastic synthetic resin prepd. by molding integrally two parallel sheets through a number of ribs 1c, a polymer substance of a thermoplastic resin or an adhesive is provided and protruded to be overlaid on all the peripheral edge sides so as to make stripe-like mass 2 with an approximately semi- spherical shape and is solidified to hide and cover the end sides and the corners of the sheet end sides and the ribs 1c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various forms of thermoplastic resin hollow boards used as packaging materials such as boxes, partitions, and building materials such as walls. The present invention relates to a hollow board made of synthetic resin, which prevents a blade from having high rigidity when contacting with a substance or a dangerous material having a sharp edge at a corner portion.

[0002]

BACKGROUND OF THE INVENTION The present invention relates to a hollow dumpler board (hollow board) in which two leaves of a thermoplastic synthetic resin sheet are parallel to each other and a plurality of ribs are integrally formed between the opposite surfaces of the sheet. It is also widely used in various fields in addition to partition plates for the packaging material, building materials such as walls, and the like.

[0003]

2. Description of the Related Art A technique using an ultrasonic fusing method as one kind of peripheral treatment means for a hollow board made of synthetic resin is a patent application filed on November 14, 1995 by the same applicant as the applicant of the present application. There is.

[0004]

Originally, a synthetic resin hollow board (hereinafter referred to as a hollow board) was developed as a substitute material for the well-known corrugated board, and is hollow as compared with conventional corrugated board of paper quality. Since the board is extremely excellent in its durability, it was researched as a substitute material for paper corrugated board at the beginning of development, and it has passed in the direction of directly following the conventional paper corrugated board product, but it is more than the paper corrugated board product. Due to its high durability, it has deviated from the application range of paper corrugated board, and its products are becoming more and more versatile.

However, the hollow board has a high rigidity as compared with the above-mentioned paper corrugated board, and therefore exhibits a phenomenon of cutting into a contact object on the peripheral side,
Further, in the corner portion, the dangerous object may have a sharp tip with respect to the contacted object.

Hollow board products, especially packaging boxes, box boxes, etc. have come to have an ideal effect on the strength of the box itself and on the protection of the contents. It has also been assumed that sometimes the situation may be harsh with respect to the environment in which it exists.

As described above, since the material of the hollow board product is rigid, when the peripheral edge including the corners as the hollow board is exposed to the outer surface of the product, the product is not transported. During transfer, for other substances, including those who come into contact with
It has been predicted that the state of contact causes various forms of damage.

A predisposition to the anticipated risk lies in the structural form of the hollow board itself. That is, a two-leaf sheet made of a synthetic resin and a large number of ribs are integrally molded, and the contact point is in either the rib direction or the direction orthogonal to the rib regardless of the form of the sheet or the rib. Is a sharp edged tool when the edge is a single leaf, and also a sharp edged dangerous object at the corner, causing tears on contacting objects or the human body,
This will cause injury such as stinging.

In view of the above, the present invention relates to a hollow board product, in which the side of the hollow board of the material and the side or corner where the corners are directly exposed are made of a thermoplastic resin or a polymer substance of an adhesive as a hot melt and are substantially spherical. The padding is raised so as to form a lump, and this is solidified to cover and cover the edge state conversion element portion of the sheet edge and the rib edge and the dangerous state conversion element portion of the sharp edge of the corner. The purpose is to reduce the risk factors.

[0010]

The present invention is, as means for achieving the above object, the first invention is a thermoplastic synthetic resin in which parallel two-leaf sheets are integrally molded through a large number of ribs. At the peripheral edge of the hollow board made of thermoplastic resin, a polymeric substance such as a thermoplastic resin or an adhesive is provided as a hot melt on all of the peripheral edge so as to form a ridge-like lump having a substantially semicircular cross section, and ridged. It is solidified and covers the edges of the sheet and the edges of the ribs.

A second aspect of the present invention is a thermoplastic synthetic resin hollow board in which parallel two-leaf sheets are integrally molded through a large number of ribs, on the peripheral side in a position parallel to the ribs and facing each other. A sheet material of thermoplastic resin or adhesive is used as a hot melt on all of the sheet edges of the two leaves to build up and solidify by adding the meat so that it becomes a strip-shaped mass having a substantially semicircular cross section. The edges and rib edges are covered and covered.

A third aspect of the present invention is a hollow board made of a thermoplastic synthetic resin, which is formed by integrally forming parallel two-leaf sheets via a large number of ribs, and has a large number of hollow openings due to the large number of the ribs. At the end of the hollow opening of the sheet, as well as the edges of the rib and the edge of the hollow opening, a polymeric substance of a thermoplastic resin or an adhesive is used as a hot melt to form a strip-like mass having a semicircular cross section. The sheet is raised and solidified to cover and cover the edges of the sheet and the edges of the rib.

According to a fourth aspect of the present invention, in a board of a thermoplastic synthetic resin hollow board formed by integrally molding parallel two-leaf sheets through a large number of ribs, a large number of ribs are provided by the end edges parallel to the ribs and a large number of ribs. At the corners formed by contact with the edge having the hollow opening, a polymeric substance of thermoplastic resin or adhesive is hot melted to build up into a spherical mass and solidify by bulging. The tip is covered and covered to form a spherical surface.

In a fifth aspect of the present invention, a thermoplastic synthetic resin hollow board formed by integrally molding parallel two-leaf sheets through a large number of ribs is heat-bonded or ultrasonic-fused to an arbitrarily set portion on the peripheral edge side of the board. The edge of the plugging treatment, which is formed by peripheral treatment for the purpose of plugging by adhesion, is made of a thermoplastic resin or a polymer substance of an adhesive as a hot melt so that it becomes a strip-shaped mass with a semicircular cross section. The meat is added to the
The sheet edge and the rib edge are covered and covered.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A hollow board 1 made of synthetic resin according to the present invention comprises two sheets, and a front sheet 1 for convenience.
A hollow sheet 1b and a back sheet 1b will be described below, but these hollow boards 1 have substantially no distinction between front and back. The above-mentioned front sheet 1a and back sheet 1b are parallel to each other, and these are integrally molded by a number of ribs 1c to form a single plate-shaped body.

The hollow board 1 is the front / back sheet 1 described above.
a, 1b and rib 1c, thickness of each forming member, rib 1
There are a plurality of types having different heights of c and gap widths.

In a product in which such a hollow board 1 is formed from the original plate or the hollow board 1 as a material,
As the hollow board 1, a polymeric material such as a thermoplastic resin or an adhesive is added as a hot melt to the peripheral edge side and the exposed corners of the hollow board, and the hollow board 1 is raised and solidified to be molded.

As described above, the hollow board 1 is composed of the front and back sheets 1a and 1b and the ribs 1c and has a proper plate thickness.

This plate thickness is not constant, and there are a plurality of types from thin to thick.

Unintentional accidents occur regardless of the thickness of these hollow boards 1, but especially from small to medium thicknesses. That is, when the human body and the substance are injured, the hollow board 1 most often occurs due to contact with either one of the front and back sheets, and both of them are on the peripheral edge side and the two peripheral edge sides. It is a corner portion 1e formed by a part.

Also, the rib 1c is provided on the side parallel to the rib 1c.
Even when c forms a plate thickness, the rib 1c is damaged due to contact between the rib 1c and a ridge line that joins one of the sheets.

Furthermore, the ridge line formed by the joining of the plate thickness direction and the flat surface portion is a risk factor even at the peripheral side where many of the hollow openings 1d are open, and this is also the same as above.

Further, the corner portion 1e, which is a one-sided sheet and whose two peripheral side edges are joined, is also a dangerous place.

Each of these hollow boards 1 is highly rigid in its essential parts, and the human body or each substance is ruptured by the sliding contact in the longitudinal direction at the peripheral side, and the hollow board 1 exists in the corner 1e. However, the sharp tip causes a sting.

In the above situation, the original plate or the hollow board 1
This is an obstacle caused by the non-machined peripheral side of the product, but even after the original plate is shaped by the processing for a certain purpose, the same cases as the above-mentioned obstacle may occur.

This is a phenomenon that is observed on the side of the exposed peripheral edge of the hollow board 1 after the plugging process of the hollow opening 1d formed by the rib 1c.
It has a shaped shape after the heat-pressing or pressure-contacting from the front and back sides and the melting process by ultrasonic waves.

This is intended to block the hollow opening 1d regardless of the plate thickness of the hollow board 1 of the original plate, so that the plugged end 1f has a sharp edge in the shape of a knife and has a dangerous position. Comprises.

In the present invention, in the hollow board 1, in particular, the front sheet 1a and the back sheet 1b are separately provided on all of the parallel peripheral side edges, and the front sheet 1a and the back sheet which are separated in parallel by the ribs 1c. 1b A polymeric substance such as a thermoplastic resin or an adhesive is hot-melted in a cross-linking structure on all of the two peripheral sides to be attached by bulging and swelling by any means such as dipping or pouring. , So that a strip-shaped mass 2 having a substantially semicircular cross section is formed and the hanging ends are fixed to the surface portions of the front sheet 1a and the back sheet 1b to cover the peripheral side of the hollow board 1 in a concealing manner. Is.

Further, even in the corner portion 1e, a substantially spherical mass 3 is formed by the same processing as described above to completely cover and cover the corner portion 1e. In some cases, the strip-shaped lump 2 is not provided on the peripheral side as in No. 8.

As described above, there are various thicknesses of the hollow board 1 from thin to thick, and the thicknesses of the front sheet 1a, the back sheet 1b and the ribs 1c also change substantially in proportion to the thickness. Therefore, the maximum plate thickness is about 1
There is also 5 mm, and each sheet and the rib 1c are also thick in accordance with this, so that the rate of damage on the peripheral side is reduced,
In the corner portion 1e, cases of damage are the same regardless of thickness.

On the contrary, when the plate thickness becomes thin, the above-mentioned build-up addition and bulging process is also carried out by immersing in the hot melt alone at the parts specified as the front sheet 1a, the back sheet 1b and the ribs 1c. Machining is not easy, and because the purpose of the added ridge processing is to prevent danger, it does not require high precision, so as shown in FIGS. 7 and 8, the entire plate thickness portion or corner portion 1 even if only 1e
It may be a strip-shaped mass 2 of strips and one substantially spherical mass 3.

The single strip-shaped mass 2 and one substantially spherical mass 3 formed by these processing means are the front sheet 1.
a, the back sheet 1b or the ribs 1c are laid and raised so as to form a cross-linking structure at a parallel position or an adjacent position.

Further, a polymer material such as a thermoplastic resin or an adhesive is hot-melted on the top of the plugging edge portion 1f to raise the meat by adding any means such as dipping or pouring. It is adhered and processed so as to form a strip-shaped mass 2 having a substantially semicircular cross section.

The above-mentioned strip-shaped mass 2 and substantially spherical mass 3 are
In the case of using a plate-shaped body (plate-shaped body) as it is as a raw material or in the case of the plugged edge 1f that has been plugged, additional processing is performed to build up and build up before the construction, and cutting is also performed. In the case of tangible machining that requires cutting, the build-up adding ridge processing is performed at the time of expanding material after cutting the required shape, or after the tangential assembling processing, the peripheral edge side of the cutting trace or the corner portion 1e is tangible. In this case, the exposed portion where the contact with humans or articles is predicted, whether inside or outside, and the latent portion of the risk factor are subjected to padding and ridge processing.

[0035]

As described above, according to the present invention, the thermoplastic resin is used for the peripheral side edge and the corners or the corners of the hollow board made of synthetic resin in which the parallel front and back sheets are integrally molded through a large number of ribs. Alternatively, a polymer material such as an adhesive is added as a hot melt to build up and solidify it to form a strip-shaped mass or a substantially spherical mass, and the edge or corner of the sheet is completely concealed to cover it, and a blade-like conversion effect is obtained. Or, it eliminates the pointed dangerous material.

In particular, immediately after the production of this hollow board, the corners with sharp tips were specially cut so as to have rounded corners for the purpose of risk prevention before shipment. However, the hollow board with rounded corners, which was cut once, recuts all sides to reproduce the square corners in order to eliminate the rounded corners when using the building materials with the entire shape adjacent to each other. However, since these added padding ridges can be easily peeled off with a sharp instrument, the original plate can be reproduced.

Also in a three-dimensional product made of a hollow board, a thermoplastic resin or a polymer substance of an adhesive is hot-melted if the peripheral side or corner is exposed as the hollow board and is considered to be a risk factor. Since the work of adding and raising the padding so as to form a strip-like mass having a substantially semicircular cross section and solidifying can also be carried out afterward, it is effective that these danger prevention processes can be performed at any time. .

[Brief description of drawings]

FIG. 1 is a partial perspective view of a hollow board, showing a state in which a part of a raised portion is cut off.

FIG. 2 is a perspective view of a corner portion of a hollow board, showing a state in which a built-up protrusion is provided at the corner portion.

FIG. 3 is a partial cross-sectional view of a hollow board with a raised bump.

FIG. 4 is a partial vertical cross-sectional view of a hollow board with a raised bump.

FIG. 5 is a partial vertical cross-sectional view of a rib portion of a hollow board with a raised bump.

FIG. 6 is a partial vertical cross-sectional view of a corner portion of a hollow board with a raised bump.

FIG. 7 is a partial perspective view of a corner portion of a hollow board with a built-up bulge for explaining a built-up state in which a part is cut.

FIG. 8 is a partial perspective view of the hollow board, showing a state in which only the corner portions are bridged and built up by bridging.

FIG. 9 is a partial perspective view of a hollow board showing a sealing edge.

FIG. 10 is a cross-sectional view of an empty board in which a line-shaped lump is added to the edge of the plugging edge by a build-up process.

[Explanation of Codes] 1 Hollow board, 1a Front sheet, 1b Back sheet, 1c Rib, 1d Hollow opening, 1e Corner, 1f Closing edge, 2 Article-like lump, 3 Approximately spherical lump.

Claims (5)

[Claims] 1. A parallel two-leaf sheet is provided with a large number of ribs 1c.
Hollow board made of thermoplastic synthetic resin integrally molded through
On the peripheral edge of the board, a polymeric substance such as a thermoplastic resin or an adhesive is hot-melted on all of the peripheral edge so as to form a ridge-like mass 2 having a substantially semicircular cross section, and is bulged and solidified. A hollow board made of synthetic resin, the peripheral edge of which is overlay-molded, characterized in that the sheet edge and the rib 1c edge are covered and covered. 2. A parallel two-leaf sheet is provided with a large number of ribs 1c.
Hollow board made of thermoplastic synthetic resin integrally molded through
A strip having a semi-circular cross section with a polymeric substance of a thermoplastic resin or an adhesive as a hot melt on the peripheral side of the board in a position parallel to the rib 1c and on all of the sheet edges of the two opposite leaves. The padding shaping process is performed on the periphery of the sheet according to claim 1, wherein the padding is raised and solidified so as to form a lump 2, and the sheet edge and the rib 1c edge are covered and covered. Hollow board made of synthetic resin. 3. A parallel two-leaf sheet is provided with a large number of ribs 1c.
Hollow board made of thermoplastic synthetic resin integrally molded through
Of the hollow board 1 having a large number of hollow openings due to the large number of the ribs 1c in the board of FIG. 1 and the sheet of the hollow openings and all of the edges of the ribs 1c are made of thermoplastic resin or adhesive. It is characterized in that a polymer substance is hot-melted into a strip-shaped lump 2 having a substantially semicircular cross section, and is raised and solidified to cover the edges of the sheet and the edges of the rib 1c. A hollow board made of synthetic resin, wherein the peripheral portion of claim 1 or 2 is subjected to overlay molding processing. 4. A parallel two-leaf sheet is provided with a large number of ribs 1c.
Hollow board made of thermoplastic synthetic resin integrally molded through
The thermoplastic resin or the adhesive polymer material is applied to the corner 1e formed by the edge of the board parallel to the rib 1c and the edge having a number of hollow openings 1d formed by the numerous ribs 1c. 4. A hot melt, which is built up by swelling and solidifying so as to have a substantially spherical shape 3 and is covered with a conical tip to form a spherical surface. Hollow board made of synthetic resin with padding shaping on the periphery. 5. A parallel two-leaf sheet is provided with a large number of ribs 1c.
Hollow board made of thermoplastic synthetic resin integrally molded through
The peripheral edge side 1f of the board formed by performing the peripheral edge treatment for the purpose of the plugging processing by the heat fusion or the ultrasonic fusion is formed of the thermoplastic resin or the adhesive. The polymeric material is used as hot melt to build up the ridges 2 in a semi-circular cross section and solidify by bulging.
A hollow board made of synthetic resin, which is formed by overlaying the periphery of the sheet and the edges of the ribs 1c with a cover.