JP2002113782A - Hollow board of synthetic resin made of a plurality of materials bound by ultrasonic welding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hollow board of synthetic resin which is made up of a plurality of materials bound together by ultrasonic welding by welding an odd-shaped molding of the same material as the hollow board of synthetic resin with thermoplasticity to the latter. SOLUTION: This hollow board of synthetic resin is formed of a hollow board and an odd-shaped molding edge member with a formed inner groove and is obtained by inserting the hollow board into the inner groove of the edge member and fitting them together and further, welding the outer edge and the inner edge of the odd-shaped molding edge member to the hollow board by ultrasonic welding. In addition, a notch running from the inner edge to the upper surface edge of the edge member is provided, the edge member is bent in the botch direction and the side formed in the botch part is welded by ultrasonic wave. Further, perforated holes are formed in the hollow board and a handle member, a transparent plate and the so forth are welded by ultrasonic wave. A cord holder is bound to the hollow board using an ultrasonic welding means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow board made of a thermoplastic resin in various forms used as a packaging material such as a box, a partition, a building material such as a wall, and more particularly to a hollow board made of a thermoplastic resin. The present invention relates to a synthetic resin hollow board in which a member made of a thermoplastic resin is joined and fused by ultrasonic irradiation means to assimilate a material joining surface.

[0002]

BACKGROUND ART A hollow dumpler board formed by integrally molding two parallel leaves of a thermoplastic synthetic resin sheet between a plurality of ribs through a number of ribs is used as a material for packaging, a packaging material, a partition plate of the packaging material, a wall, and the like. In addition to building materials, it is widely used in various fields.

[0003]

2. Description of the Related Art One of processing means of a hollow board made of synthetic resin.
A technique using the ultrasonic melting method as a seed has a patent application filed on November 14, 1995 and November 27, 1995 by the same applicant as the present applicant.

[0004]

Originally, a hollow board made of synthetic resin (hereinafter referred to as a hollow board) was developed as an alternative material to a known cardboard, and was hollow compared to conventional paper-type cardboard. The board was extremely excellent in its durability, but had difficulty in the bonding technique.

[0005] An adhesive,
Adhesive tape, stapling, riveting, and the like are used. These joining means can also be used for synthetic resin hollow boards, but in the case of joining with adhesives in particular, since hollow boards have a higher load capacity than those made of paper-made corrugated cardboard, they can be used when heavy objects are inserted. Low reliability of adhesion.

[0006] In addition, joining with a stapler, a rivet, or the like is not suitable when airtightness and watertightness are required.

A hollow board made of synthetic resin can be subjected to heat welding, high-frequency welding, and the like, which cannot be used for paper-type corrugated cardboard. However, in practice, there are many inconveniences such as a finished work and burned-out construction points. In order to overcome these problems, there is a problem that a high level of technology is required and low productivity must be improved.

An object of the present invention is to provide a synthetic resin made of a synthetic resin, which is formed by fusing a deformed body of the same material to a thermoplastic synthetic resin hollow board. It is to provide a hollow board.

Another object of the present invention is to provide the above-mentioned synthetic resin hollow board intended for the main constituent material of the box.

[0010]

As means for achieving the above object, a synthetic resin hollow board according to the first invention is a thermoplastic resin in which two parallel sheets are integrally molded through a number of ribs. A hollow board made of a synthetic resin is inserted and fitted into the inner groove of the deformed body edge member having an inner groove having a width dimension substantially the same as the thickness of the hollow board at the outer edge and the inner edge on both sides of the upper surface edge, The outer edge and the inner edge of the deformed body edge member are ultrasonically fused to the hollow board.

According to a second aspect of the present invention, there is provided the synthetic resin hollow board according to the above-mentioned hollow board, wherein a notch extending from the inner edge to the upper surface edge is provided on the deformed body edge member, and the edge member is bent in the notch direction. The sides formed at the portions are joined, and the joined sides and the periphery thereof are subjected to ultrasonic fusion.

[0013] A hollow board made of synthetic resin according to a third aspect of the present invention is the hollow board according to the first aspect of the present invention, wherein a notch is provided at an inner edge and an upper edge of the deformed body edge member, and a notch is formed at an inner edge connected to the notch. The outer edge at the position corresponding to the starting point of the cut is bent, the upper edges of the ends divided by the cut are overlapped, and the mating surface is ultrasonically welded.

The synthetic resin hollow board according to a fourth aspect of the present invention provides a hollow board made of a thermoplastic synthetic resin in which two parallel sheets are integrally formed via a large number of ribs, and a perforation is formed at an appropriately set position on the hollow board. A handle member made of a thermoplastic synthetic resin molded of the same quality as the hollow board is engaged with the perforation, and a peripheral edge of the perforation and a flange of the handle member are joined by ultrasonic fusion. I do.

According to a fifth aspect of the present invention, there is provided a synthetic resin hollow board, which is formed of a thermoplastic synthetic resin hollow board in which two parallel sheets are integrally formed through a number of ribs, and is provided at a predetermined position. The card holder made of a thermoplastic synthetic resin molded body is in contact with a base portion thereof, and the contact portion is joined by ultrasonic fusion.

A synthetic resin hollow board according to a sixth aspect of the present invention is a thermoplastic synthetic resin hollow board formed by integrally molding two parallel sheets via a number of ribs, at one set position on one side of the hollow board.
A perforation of a setting shape having an appropriate setting area is provided, and the perforation is covered with a transparent plate made of a thermoplastic resin having a larger area than the perforation, and an overlapping portion of the hollow board and the transparent plate is ultrasonically fused and integrally formed. It is characterized by becoming.

A synthetic resin hollow board according to a sixth aspect of the present invention is a thermoplastic synthetic resin hollow board in which two parallel sheets are integrally formed through a number of ribs, at one set position on one side of the hollow board.
A perforation of a set shape having an appropriately set area is provided, and a rib in a certain set width range is cut from the perimeter side of the perforation to be divided into front and back sheets, and the cutting range dimension of the rib is larger than the perforation between the front and back sheets. A composite made by inserting and laminating a thermoplastic resin transparent plate with a smaller area and laminating them, and ultrasonically fusing the overlapped parts to form a single body. Hollow board made of resin.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a hollow board 1 made of synthetic resin used in the present invention is a single board in which a parallel front sheet 1a and a back sheet 1b are integrally formed by a large number of ribs 1c. It is a plate-like body of. In such a hollow board 1, there are a plurality of types in which the thickness of each molded member of the front and back sheets 1a and 1b and the rib 1c, the height of the rib 1c, the gap width, and the like are different.

Although the front and back sheets 1a and 1b and the ribs 1c have been described for each part as described above, these hollow boards 1 are formed by extrusion in the longitudinal direction of the hollows 1d formed by the ribs 1c. The body is made of a thermoplastic synthetic resin such as polypropylene, polyethylene, and polycarbonate.

The means for performing ultrasonic processing on the hollow board 1 as described above oscillates ultrasonic waves in the front and back directions of a desired position of the hollow board 1. Therefore, the oscillated ultrasonic wave penetrates either the front or back material and the rib 1
c, and the hollow board 1 is melted while generating heat by its oscillating action. Therefore, the existence of the rib 1c as an ultrasonic wave propagation path is an important factor.

Ultrasonic welding, which is used as one of means for joining these thermoplastic resin hollow boards, involves heating and melting by physical vibrations by ultrasonic irradiation processing. Since both thermoplastic resins are simultaneously melted and physically assimilated at the same location, and after the ultrasonic oscillation is completed, integration is expected by consolidation of the assimilated fusion locations by the cooling action of the fusion locations, Before the ultrasonic oscillation is started, it is necessary to provide a means for supporting and fixing the fusion-bonded portions in the same posture as that after solidification.

According to the present invention, a deformed body 3 made of a thermoplastic resin other than the hollow board 1 is applied to the hollow board 1 and pressed against the seat 9 with the ultrasonic oscillator 8 and ultrasonically fused. FIGS. 2 to 6 show examples of forming the edge member 3A to be fused to the opening of the box mainly including the hollow board 1 and joining the hollow board 1 and the edge member 3A. Things.

The edge member 3A is an extruded product formed by being extruded in the longitudinal direction, and is made of a thermoplastic resin such as polypropylene, polyethylene, or polycarbonate, and is the same as the hollow board 1 described above.

The edge member 3A is used as an opening of a box using the hollow board 1 as a main material and as a rigidity auxiliary material, and is fitted on the upper side of the opening peripheral side wall plate of the box using the hollow board 1 as a main material. It is used in the form of a pair of side walls composed of four single-walled panels, or one long hollow board 1 is bent by appropriate dimensions to form four peripheral side walls. There is also a purpose as a forming aid when forming into a cylindrical shape.

Since the edge member 3A shown in FIG. 2 is a long body extruded as described above, the edge member 3A is appropriately cut to a predetermined length for use. The basic shape of the cross section is an inverted U-shape. The inner groove 3a is a groove into which the thickness direction of the hollow board 1 can be press-fitted, and is formed by an outer edge 3b, an inner edge 3c, and an upper edge 3d connecting these. The edge member 3A of the illustrated embodiment has a frame edge 3e in which the outer edge 3b is higher than the height of the inner edge 3c and protrudes above the upper edge 3d.

A single or a plurality of beads 3n are projected in the longitudinal direction of the edge member 3A on the back surface of the outer edge, that is, on the side of the inner groove 3a, thereby increasing the melting area by the beads 3n. It is intended to obtain a more efficient bonding effect.

The hollow board 1 is inserted into the inner groove 3 of the edge member 3A.
a, the outer surface of either the outer edge 3b or the inner edge 3c is selected and placed on the receiving seat 9, and the ultrasonic oscillator 8 oscillates ultrasonic waves from the ultrasonic oscillator 8 in contact with the corresponding surface. Is basically formed by melting and joining the hollow board 1 and the edge member 3A.

The purpose of combining the hollow board 1 and the edge member 3A as described above is to form the box with the edge member 3A and to reinforce the opening. In general, there are four open sides of the box. When this is formed by one edge member 3A, at least three places need to be bent, and the other one is connected to the front and rear ends to form an annular shape. In order to make the bending action favorable, the upper edge 3d as shown in FIGS.
A notch 3g and a notch 3h are provided in the inner edge 3c to form a bent portion 3f, and if necessary, ultrasonic welding is performed at the bent portion 3f to form a joint 4 and maintain the bent shape. It is.

There are a plurality of forms for forming the bent portion 3f at which the bending angle is bent to 90 degrees. To explain a typical form, as shown in FIG. 3, both the upper edge 3d and the inner edge 3c of the edge member 3A are angled from the joining edge of the outer edge 3b and the upper edge 3d toward the inner edge 3c. No 90 ° angle through 45 ° and inner edge 3c from the joining side
A notch 3g extending vertically to the lower side is formed, and both sides are bent inward from the notch starting point 3f of the upper surface edge 3d to the outer edge 3b as a bending line.
When joining the notched sides of the notched 3g cutout at 90 degrees,
As shown in FIG. 8, a bent portion 3f is formed by bending the edge member 3A at an angle of 90 degrees.

In the bent edge member 3A,
In the case where the bent portion 3f is solidified, an ultrasonic fusion work is performed on a portion where the tangent side straddles, and the two tangent sides can be united by assimilation melting (see FIG. 8).

As another embodiment, a notch 3h is provided in the width direction of the edge member 3A from a desired bending point at a side where the outer edge 3b and the upper surface edge 3d of the edge member 3A are joined. The length from the end of the notch 3h reaching the side where the edge 3c joins with the inner edge 3c to the point separated by the same length dimension as the length of the notch 3h in each of the left and right directions. Cut out the area surrounded by the vertical line that has been lowered to the lower side of the inner edge 3c.
Form g. Then, the cut 3h of the upper surface edge 3d
When the vertical line of the outer edge 3b corresponding to the starting point of the above is made a bending line, and the left and right edge members 3A are bent inward from the line,
Each of the tangent sides of the upper surface edge 3d along the line of the cut 3h is overlapped and rotated upward and downward, and the edge member 3A can be bent at a right angle at an intermediate position as shown in FIG. Furthermore, the upper surface edge 3 formed by this bending
The folded state can be solidified by subjecting the overlapped portion d to ultrasonic fusion.

The edge member 3A as described above can be melted and united by ultrasonic waves before or after the fitting operation of the hollow board 1 in accordance with an arbitrary manufacturing process of the box.

In addition to the edge member 3A, the deformed body 3 includes a handle member 3B, a transparent plate 3C and a card holder 3.
There is D.

When the handle member 3B and the transparent plate 3C are mounted on the hollow board 1, a hole 5 is formed in the hollow board 1 to cope with this.

That is, in the case of the handle member 3B, FIG.
As shown in the figure, the entire gripping edge 3j of the hand insertion hole 3i is formed in an annular shape or an inverted U-shape (not shown) in which the lower side is cut off, and is formed in the outer peripheral direction from one side of the gripping edge 3j. The handle member 3B is formed by extending the flange 3k.
Similarly to the above-mentioned edge member 3A, it is a molded body made of a thermoplastic resin, and a perforation 5 which can be engaged with the outer periphery of the gripping edge 3j at an arbitrary set position of the hollow board 1 intended for the side wall of the box product. Then, the handle member 3B is inserted into the perforation 5 from its grip edge 3j, and one surface of the hollow board 1 inserted and engaged and the back surface of the flange 3k are tightly joined. Then, the ultrasonic oscillator 8 is brought into contact with the joined portion to oscillate ultrasonic waves, causing a melting phenomenon on both of the joining surfaces, assimilating and fusing, and uniting. In this case, the oscillating direction of the ultrasonic wave is arbitrary, and in the case of the above-mentioned inverted U-shape, the edge of the perforation 5 that is not covered by the flange 3k is subjected to plate-forming processing by ultrasonic fusion to form a hole edge. Form.

Further, when the above-mentioned transparent plate 3C is used, a window hole having an arbitrary shape is formed at an arbitrary position of the hollow board 1 intended for the side wall plate of the box product as described above.
On the other hand, a transparent plate 3C made of a thermoplastic resin is formed in a shape similar to the perforations 5 and larger than the perforations 5, and the perforations 5 in the hollow board 1 are formed.
Are superposed so as to cover each other, and ultrasonic waves are oscillated at the overlapping portions at the edges of the perforations 5 to cause a melting phenomenon on both of the joining surfaces to assimilate and fuse together to unite. In this case, the oscillation direction of the ultrasonic wave is arbitrary.

FIG. 13 shows another embodiment of the fusion of the transparent plate 3C and the hollow board 1 described above. The area corresponding to the area of the transparent plate 3C larger than the area of the perforations 5 in the hollow board 1 is shown. Rib 1 within the width range with the peripheral side of perforation 5
c, a cut is made so that the front sheet 1a and the back sheet 1b can be branched, and the outer periphery of the transparent plate 3C is inserted into the gap formed by dividing the front sheet 1a and the back sheet 1b. The edge is sandwiched in the middle, and the overlapped portions are melted by the ultrasonic oscillation action and fused.

Further, the above-mentioned card holder 3D
In this case, an inverted U-shaped plate having one side opened is formed of a thermoplastic resin similar to the material of the hollow board 1 described above, and the outer periphery thereof is formed as a base 31 and the inner periphery thereof is formed. Is raised from the bottom surface of the base 3i by an amount corresponding to the thickness of the cards to be inserted and engaged.
m is formed integrally with the back surface of the base 31 so that a set gap is formed between the back side of the card engaging portion 3m and the surface of the hollow board 1 on the surface of the hollow board 1 of the desired side plate forming the box. The surface of the hollow board 1 is brought into contact with the surface of the hollow board 1, and the contact point is melted by oscillating ultrasonic waves. Thus, a material for the side wall of the box in which the card holder 3D is united on the surface of the hollow board 1 via the joint 4 is formed.

As described above, the present invention relates to a hollow board 1 made of a thermoplastic resin and an edge member 3 made of the same material.
A, handle member 3B, transparent plate 3C or card holder 3
The joint member of D is melted by ultrasonic oscillation to form a fused box material.

[0039]

As described above, according to the present invention, a hollow board made of a thermoplastic synthetic resin and an edge member, a handle member, a window member made of a transparent plate, or a card holder are melted by ultrasonic oscillation means. Since the material at the melting point is assimilated and coalesced, a box-shaped surface structure is obtained without peeling or scorching of the joint and no formation of keloid traces.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view in which a deformed body is joined to a hollow board in the same plane direction.

FIG. 2 is a partial perspective view of an edge member.

FIG. 3 is a partial perspective view of a bent portion of the edge member.

FIG. 4 is a partial perspective view of a bent portion of the edge member.

FIG. 5 is a partial perspective view of a corner in which a hollow board is combined with an edge member.

FIG. 5 is a partial perspective view for explaining another molten state of the corner portion of the edge member.

FIG. 6 is a perspective view of a handle member partially cut away.

FIG. 7 is an enlarged sectional view in which a handle member and a hollow board are combined.

FIG. 8 is a perspective view of a card holder partially cut away.

FIG. 9 is an enlarged sectional view in which a card holder and a hollow board are combined.

FIG. 11 is a partial front view of a hollow board partially provided with a transparent plate and provided with a see-through window.

FIG. 12 is a partial front view of a hollow board having a see-through window formed by inserting a peripheral edge of a transparent plate into a front and back sheet of a perforated edge of the hollow board and fusing and joining them.

13 is an enlarged sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hollow board 1a Front sheet 1b Back sheet 1c Rib 1d Hollow 1A Joined body 2 Side edge 3 Deformed body 3A Edge member 3B Handle member 3C Transparent plate 3D Card holder 3a Inner groove 3b Outer edge 3c Inner edge 3d Top edge 3e Frame edge 3f Bending point 3g Notch 3h Notch 3i Hand insertion hole 3j Grip edge 3k Flange 3l Base 3m Card locking part 3n Bead 4 Joint part 5 Perforation 7 Jig 8 Ultrasonic oscillator 9 Receiver

[Reference number] PAS001-021

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E162 CD04 GA05 GB07 3E060 BC04 BC10 CA12 CA42 DA25 4F211 AD05 AG06 AH47 AH53 TA01 TC14 TD11 TH18 TN22 TQ04

Claims (7)

[Claims] 1. A hollow board made of a thermoplastic synthetic resin, in which two parallel sheets are integrally formed through a large number of ribs,
The outer edge and the inner edge on both sides of the upper surface edge are inserted and fitted into the inner groove of the deformed body edge member having an inner groove having a width substantially equal to the thickness of the hollow board, and the outer edge of the deformed body edge member is A synthetic resin hollow board formed by joining a plurality of materials by ultrasonic welding, wherein the inner edge is ultrasonically welded to the hollow board. 2. A notch extending from the inner edge to the upper edge of the deformed body edge member, and the edge member is bent in the notch direction,
2. A plurality of materials according to claim 1, wherein the sides formed in the cutout portions are joined together, and the joined sides and the periphery thereof are subjected to ultrasonic fusion. Hollow board made of synthetic resin. 3. A notch is provided at an inner edge and an upper surface edge of the deformed body edge member, a notch is provided at an inner edge connected to the notch, and an outer edge at a position corresponding to a starting point of the notch is bent to be divided by the notch. 2. The synthetic resin hollow board according to claim 1, wherein the upper surfaces of the end portions are overlapped with each other, and the mating surfaces are ultrasonically fused. . 4. A perforated hole is formed at an appropriate setting position of a thermoplastic synthetic resin hollow board formed by integrally molding two parallel sheets through a large number of ribs, and the perforated hole is formed with heat of the same quality as the hollow board. A plurality of materials characterized by engaging a handle member made of a molded article made of a plastic synthetic resin and joining a peripheral edge of the perforation and a flange of the handle member by ultrasonic fusion. Hollow board made of synthetic resin. 5. A thermoplastic synthetic resin molded body made of a thermoplastic synthetic resin of the same quality as the hollow board, at an appropriate setting position of a thermoplastic synthetic resin hollow board formed by integrally molding two parallel sheets through a number of ribs. Face the base of the card holder,
A hollow board made of synthetic resin obtained by joining a plurality of materials by ultrasonic welding, wherein the contact surfaces are joined by ultrasonic welding. 6. A perforation of a set shape having an appropriately set area is provided at a set point on one surface of a thermoplastic synthetic resin hollow board formed by integrally molding two parallel sheets through a number of ribs. A plurality of materials, characterized in that the perforations are covered with a transparent plate made of a thermoplastic resin having a larger area and the hollow board and the transparent plate are integrally formed by ultrasonic fusion at the overlapping portion. Synthetic resin hollow board joined by wearing. 7. A perforated hole having a set shape having an appropriate set area is provided at a set point on one side of a thermoplastic synthetic resin hollow board formed by integrally molding two parallel sheets through a number of ribs. Cut a rib of a certain set width range from the peripheral side and divide it into front and back sheets, and insert a thermoplastic resin transparent plate with an area larger than the perforation and smaller than the cutting range dimension of the rib between the front and back sheets. A synthetic resin hollow board formed by combining a plurality of materials by ultrasonic fusion, wherein the laminated portions are integrally formed by ultrasonic fusion of a superposed portion.