JP4693820B2 - Resin plate joining method - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining resin plates that join a thermoplastic resin resin plate such as a plastic cardboard plate so that the joint can be rotated like a hinge, and a plastic cardboard box using the resin plates joined by the method The foldable side wall.

  Plastic corrugated board made of a resin such as polypropylene is more widely used as a logistics material such as a shipping container because it is more water resistant and more durable than paper corrugated board. This plastic corrugated board is made of a thermoplastic resin in which a plurality of liners, which are plate-like parts parallel to each other, and the liners are vertically connected and a plurality of ribs arranged in parallel to each other are made of thermoplastic resin. It is a board. Due to the ribs arranged in parallel, the plastic corrugated board exhibits high strength against both a force perpendicular to the liner and a force applied to an end surface parallel to the rib.

  A box using plastic corrugated cardboard having both strength and reusability is easy to reuse and wash, and is therefore easier to reuse than packaging made of paper, and its packaging applications are expanding. Currently, there are examples of packaging that are used not only for industrial products but also for pharmaceuticals and fresh foods.

  In order to use such a plastic corrugated cardboard as a box, for example, a method as described in Patent Document 1 can be cited. As shown in FIGS. 15A to 15D, a heating iron 2 having a V-shaped cross section is applied to a plastic corrugated board 1 to form a groove 3 having a V-shaped cross section (a). (B). The processed plastic corrugated board 1 ′ is bent with the bottom 4 of the groove 3 as a hinge part to form a corner of the box (c), and each of the parts delimited by the groove 3 of the plastic corrugated board 1 ′ is one side. It can be set as the surrounding wall 1 '(d). By fitting the peripheral wall 1 ′ into the bottom plate 6 having the fixable frame 5, a box using the peripheral wall 1 ′ as a side wall can be obtained (f).

  Such a peripheral wall 1 'can be folded by turning the bottom part 4 serving as a hinge part by turning 270 degrees as shown in FIG. 15E, and can be stored compactly.

  Also, a plastic bubble board as shown in FIGS. 16A to 16C in which a flat sheet 11a is bonded to one surface of a cap sheet 11c having a plurality of cap-shaped protrusions 11b as well as a plastic corrugated board. 11 can also be used as a side wall of the box by the same processing, and can be generally processed by the above-described method for a resin plate made of a thermoplastic resin.

  However, since the width of the plastic corrugated board is limited by the scale of the manufacturing apparatus that performs resin extrusion, it can be formed as shown in FIG. The size of one side that can be produced is theoretically limited to less than half of the maximum width of the original plastic corrugated board 1.

  On the other hand, as described in Patent Document 2, a supporting column 14 having a U-shaped cross section connected by a hinge portion 13 is a supporting column 14 with four corners (FIG. 17A). Is supported on the bottom plate 15, the four side plates 16 are supported by the support portion 12 of the support column 14, and a box 18 (FIG. 17B) with a top plate 17 placed on the upper portion is formed. The side surface can be expanded to the maximum width of the thermoplastic resin plate without bending or cutting the thermoplastic resin plate in the middle. This hinge-supported column is made of a hard resin such as a polyolefin resin, a hard vinyl chloride resin, or an ABS resin at both ends in the longitudinal direction with a soft portion made of a soft resin such as thermoplastic elastomer or soft vinyl chloride resin as a hinge. A fixed frame of a certain side plate is attached.

Japanese Utility Model Publication No. 7-28012 Japanese Patent Laid-Open No. 11-100030

  However, the box described in Patent Document 2 needs to prepare struts separately from the side plates, and there is a problem that the number of parts to be managed increases even when disassembled and folded. Moreover, the support column described in Patent Document 2 is a product integrally formed with the hinge portion, and similarly, the side plate is extruded while being connected to the hinge portion, because the lateral width of the side plate is longer than that of the support column. It has become extremely difficult.

  Therefore, the present invention uses a resin plate made of a thermoplastic resin, and joins the resin plates so that they can be rotated in a hinge-like manner in a simple and strong manner so that side walls can be formed by connecting the resin plates in series to form a box. It aims to provide a way to do.

In the present invention, two resin plates are overlapped, and the end surface formed by aligning the end portions is sized to cover the end surfaces of the two sheets, and the joining plate made of the same thermoplastic resin as the resin plate By applying one surface and heating the bonding plate from the other surface, the bonding plate and the end surfaces of the two resin plates in contact with the bonding plate are softened to a deformable strength. ,
The end portion of the softened resin plate and one surface of the bonding plate are pressed and bonded, and the bonding plate is bent at a bonding line that becomes a boundary portion between the bonded end portions of the resin plates. By making it possible, the above problems have been solved.

  That is, the end portions of the two resin plates are bonded to each other by the bonding plate, and the two resin plates can be rotated in a hinge shape by bending the bonding plate between the resin plates. Become. Moreover, by using the joining plate made of the same thermoplastic resin as the resin plate, the joining between the resin plate and the joining plate becomes strong.

  The thermoplastic resin such as polyolefin used for the resin plate is not easily broken by bending even if it is foldable, and sufficient durability can be maintained even if it is rotated like a hinge.

  For bonding between the bonding plate and the end portion of the resin plate, the bonding plate is made sufficiently large, and after bonding, the peripheral portion protruding from the end surface is removed with a cutting blade, thereby performing reliable bonding. When the resin plate has a hollow structure, it is possible to make it difficult to generate a gap between the end of the joining plate and the flat plate surface of the resin plate.

  Further, in the heating performed for adhesion between the joining plate and the end portion, a heat bar whose contact surface is processed with a fluororesin is used, or a fluororesin processed plastic sheet such as a Teflon (registered trademark) sheet is used. By applying the heat bar, it is possible to suppress the adhesion of the resin of the bonded plate after the adhesion to the heat bar and the roughening of the surface after releasing the heat bar. Furthermore, while the temperature is deformable after bonding, apply a ruler with a fluororesin processed contact surface, or apply a ruler through the plastic sheet, and arrange the other surface, so that the appearance of the joint part Can be a flat and beautiful end face. By reducing the unevenness of the other surface after bonding by these means, the two resin plates form one plane when the resin plates are opened until the ends of the end surfaces of the joints contact each other. Easier to use on the side of the box.

  The bonding method according to the present invention can be used for bonding a general thermoplastic resin plate, and the form of the applicable resin plate is not particularly limited. Specifically, it may be a solid board without a cavity inside, or a flat sheet is bonded to at least one surface of a plastic corrugated cardboard having ribs between liners or a cap sheet having a plurality of cap-shaped protrusions. Plastic bubble board may be used. These hollow structural boards such as plastic corrugated board and plastic bubble board have a hollow part by a method other than foaming. Further, it may be a foamed plastic sheet or foamed plastic board having a hollow portion formed by internally foaming resin and having communication holes, independent holes, or both. Specifically, as the plastic foam board, there is a plastic pearl manufactured by Kawakami Sangyo Co., Ltd. Examples of the foamed plastic board include Sumiceller (registered trademark) manufactured by Sumitomo Chemical Co., Ltd., Fcell (registered trademark) manufactured by Furukawa Electric Co., Ltd., and the like.

  However, the thickness of the resin plate to be joined in the present invention is preferably 1 mm or more. Since the end face of the resin plate is bonded and bonded, if the width of the end face to be bonded is not secured to some extent, sufficient bonding strength cannot be obtained, and the bonding strength becomes insufficient. Thickness is desirable.

  When a solid plate having a thickness of 0.5 to 20 mm is used as the joining plate, the joining plate can be joined with sufficient strength. However, when a solid plate having a thickness of 1 mm or more is used, the solid plate is compressed to have a thickness of the joining portion of 0.1 to 1.5 mm when bonded to the resin plate. By setting the thickness to such a level, bending after joining is sufficiently possible, and the strength does not easily break even if the bending is repeated. In addition, the thickness of the joint part after the compression indicates a thickness of a portion where a joint line between the joined resin plate and the resin plate is bent after joining.

  Further, as the joining plate, a hollow structure plate having a hollow portion inside a plastic corrugated board, a plastic bubble board, a foamed plastic board or the like can be used. In that case, when bonding with the resin plate, the hollow portion of the hollow structure plate is shrunk, the resin to be formed is compressed, and the thickness of the bonded portion after compression is 0.1 to 1.5 mm. Thus, the strength is easy to bend and not easily break. In addition, in order to be compressible to such a thickness, when using a plastic corrugated board or a plastic bubble board as the hollow structure board used for the joining plate, it is preferable to use one having a thickness of 1 to 15 mm, especially It is more preferable that it is 1-5 mm. Moreover, when using a foamed plastic sheet or a foamed plastic board, it is preferable to use a 0.5-15 mm thing, and it is especially more preferable that it is 0.5-1 mm. The foamed plastic sheet and the foamed plastic board have the same structure except for the different thicknesses. For convenience, the original thickness of less than 5 mm is called the foamed plastic sheet, and the foamed plastic sheet is foamed with a thickness of 5 mm or more. Called a plastic board.

  Furthermore, the above-described bonding method is not performed every two resin plates, but can be performed at once on a larger number of resin plates. That is, four or more even number of resin plates are stacked, end portions are aligned, end surfaces are formed, and the above-described joining plate covering the end surfaces is applied, and the end portions of the resin plates are the same as described above. Bond the bonding plate. Thereby, it will be in the state in which all the resin plates prepared for one joining board were joined. After bonding, among the bonding lines between the adjacent resin plates on the bonding plate, the bonding plate is divided every two resin plates along even-numbered bonding lines counted from the end of the bonding plate. Cut into sections. Thereby, when the resin plates are stacked, two sets of resin plates adjacent to each other can be obtained at a time by joining the cut pieces of the joining plates cut individually. Each of the bonded resin plates can be rotated in a hinge-like manner with the odd-numbered bonding line as an axis that has not been cut.

  In addition, a large number of resin plates can be continuously connected in one direction by the bonding plate. First, three or more rectangular resin plates are overlapped to form end surfaces by aligning the end portions, and the above-mentioned joining plates are applied to each of a pair of end surfaces facing each other to be bonded in the same manner. Next, among each of the above-mentioned joining plates, one joining plate is cut by an even-numbered joining line from the end, and the other joining plate is cut by an odd-numbered joining line from the end. As a result, all the used resin plates can be continuously joined in one direction, and can be folded at the joining line that has not been cut, and can be folded alternately by returning the bending of the joining line. Can be obtained.

  When the resin plate is bonded by the bonding method according to the present invention, a bonded resin plate having a plurality of rotatable surfaces can be obtained. A rectangular cylindrical wall can be formed by joining three or more of the resin plates by a joining method according to the present invention for each pair of ends. Moreover, a cylindrical wall can also be formed by joining an unjoined end of a joined resin plate continuously connected in one direction to another resin plate or a joined resin plate by the above joining method. Can do. When the bonding resin plate according to the present invention is used as the side wall of the box, a box having side surfaces formed by utilizing the original size of the resin plate to the maximum can be manufactured, and a groove is formed in the middle of the conventional resin plate. A box larger than the method of carving the hinge portion can be manufactured.

  In addition, the side wall may be formed by opening one end portion without joining, and applying another plastic corrugated cardboard to the open end portion, instead of forming a cylindrical shape. As such a side wall, the joining resin board connected continuously in the said one direction can also be used as it is.

  A specific method of use as a resin box includes a plate-shaped bottom plate and a frame plate standing upright around the bottom plate, with the bonding resin plate having a rectangular side wall with at least a part of the bonding portion as a corner. A resin box can be formed on the bottom board by placing the frame plate in contact with at least a portion of the lower part without joining. This resin box can be disassembled by removing the side wall from the bottom board and folding the joint portion, whereby the side wall made of the above-mentioned joined resin plate can be folded into a flat plate shape and can be stored compactly during storage. The bottom board and the top board placed on the side wall may be made of resin or made of other materials.

  When the bonding resin plate is used as the side wall, if the portion of the bonding portion is formed so that the bonding line faces the outer side surface, it can be folded so as to be recessed inward from the portion, and the width is increased when the side wall is folded. Can be shortened.

  Using at least one of the resin plates used for the side wall, which has a groove having a V-shaped cross section on one side in advance and is rotatable with the bottom of the groove as a hinge, When used on the side wall, the groove forming the hinge is at least one of the corners of the side wall, and the remaining corners are joined by the joining method according to the present invention. It can also be used.

  According to the joining method concerning this invention, when joining the edge parts of a thermoplastic resin board, there are almost no difficult work locations, and it can join simply, without requiring high work precision. This is simpler than applying a method of integrally molding together with a soft member made of elastomer, which is a conventional joining method, to a wide resin plate. Furthermore, since the opposite end surfaces of the resin plates joined to one end surface can be easily joined, the joined resin plates that can be used as side walls of the box can be easily connected by connecting the resin plates joined by the same joining method. Can be manufactured.

  The part joined by the joining method according to the present invention can be bent freely, can be rotated around the joined resin plate, and the side wall of the box is removed from the bottom plate to form a flat plate. Can be folded.

  Hereinafter, the resin plate joining method according to the present invention will be described with reference to specific embodiments. First, a first embodiment will be described with reference to FIG. In this embodiment, a plastic corrugated board 21 provided with ribs 21b between liners 21a shown in FIG. 1A is used as a resin board made of thermoplastic resin. The end portions to be joined (each shown as 21d) are aligned as shown in FIG. 1B, and a joining plate 22 made of the same thermoplastic resin is applied to the formed end face.

  The area of the joining plate 22 is preferably large enough to cover at least the end surfaces of the two end portions of the two plastic corrugated board 21 to be joined together. If the length is smaller than that, the length of the plastic corrugated board 21 in the thickness direction is not sufficient to bond the two liners 21a. Therefore, the bonding strength between the joining board 22 and the plastic corrugated board 21 is insufficient. Become. Further, if the length of the plastic corrugated board 21 in the direction of the liner 21a is insufficient, a portion where the end surface (indicated by 21c) is exposed remains, so that dirt easily accumulates in that portion.

  The end face to which the bonding plate 22 is applied and bonded is on either side of the end portion (on the 21c side) where the cross section of the rib 21b is exposed and the end portion (on the 21d side) where the rib 21b is not exposed. However, when the bonded end surface sealing plate obtained by bonding is used as the side wall of the resin box, it is preferable to adhere to the end portion (on the 21d side) where the cross section of the rib 21b is not exposed. When used for the side wall when bonded in this manner, the rib 21b is arranged in the vertical direction, so that the cross-section of the rib 21b is in the vertical direction more than the case where it is bonded at the exposed end (21c side). This is because it becomes stronger against the force it receives. Hereinafter, the surface formed by overlapping and aligning the end portions where the cross section of the rib 21b is not exposed is referred to as an end surface 21d.

  FIG. 1C shows a cross-sectional view in a state where one surface 22a of the joining plate 22 is in contact with the end surface 21d. In order to maintain the state in which the joining plate 22 completely covers the end faces 21d of the two plastic corrugated cardboard plates 21, the base 23 on which the plastic corrugated cardboard plate 21 is placed may have a step 23a with a depressed end.

  In a state where one surface 22a of the joining plate 22 and the end face 21d of the two plastic corrugated cardboard plates 21 are in contact with each other, the other surface 22b of the joining plate 22 is pressed against the heat bar 24 and heated. The heat bar 24 is an object having good heat conductivity that can sufficiently heat the bonding plate 22, and needs to have a temperature at which the thermoplastic resin constituting the plastic corrugated board 21 and the bonding plate 22 can be softened.

  FIG. 1D shows a cross-sectional view of a state where the heat bar 24 is applied to the other surface 22b of the joining plate 22 and heated. The joining plate 22 in contact with the heat bar 24 is softened by the heat of the heat bar 24. In addition, the respective end portions forming the end surfaces 21d of the plastic corrugated board 21 and 21 in contact with the joining plate 22 are also heated through the joining plate 22 so that the contact portions between the joining plate 22 and the plastic corrugated board 21 are mutually connected. Heat until softened and bondable.

  With the joining plate 22 and the end face 21d of the plastic corrugated board 21 and 21 both sufficiently bonded, the plastic corrugated board 21 and 21 are directed toward the joining board 22 with the end face 21d aligned. Push in. Thereby, the end portions of the liner 21a and the rib 21b of the plastic corrugated board 21 and 21 are pushed into the joining board 22, and the resin of the joining board 22 and the plastic corrugated board 21 and 21 is bonded to each other. Thereby, the two plastic corrugated board 21 and 21 are joined via the joining plate 22.

  When it is sufficiently bonded, the heat bar 24 is separated from the bonding plate 22. At this time, the thermoplastic resin of the joining plate 22 may adhere to the surface of the heat bar 24, and the other surface 22b of the joining plate 22 may become rough. For this reason, in order to prevent adhesion of the thermoplastic resin, it is preferable that the contact surface of the heat bar 24 is processed with a fluororesin or heated through a plastic sheet processed with the fluororesin.

  However, regardless of the presence or absence of the above-mentioned fluororesin-processed plastic sheet or the presence or absence of fluororesin processing of the heat bar 24, the bonding plate 22 is heated until it can be bonded on one surface 22a. The other surface 22b is inevitably softened and uneven. In order to flatten the unevenness, a ruler 25 is applied to the other surface 22b of the joining plate while the resin of the joining plate 22 is at a deformable temperature (FIG. 1E), and the joining plate 22 is cooled. While making the end face flat. The ruler 25 has a flat plate that can flatten the other surface 22b, and is a temperature at which the bonding plate 22 can be cooled. Further, it is preferable that the surface of the ruler 25 is made of a fluororesin processed so that the resin of the joining plate 22 does not stick, or the end face is arranged through a fluororesin processed plastic sheet in the same manner as described above. FIG. 1 (f) shows a state in which the other surface 22 b of the joining plate 22 that has become a new end surface of the plastic corrugated cardboard 21 is flattened by the ruler 25.

  Instead of using the ruler 25, it is also possible to heat and bond the joining plate 22 by applying the heat bar 24, and then fix the heat bar 24 as it is and cool it together with the heat bar 24 to adjust the end face. However, separately adjusting the end face using a ruler 25 having a low temperature can speed up the cooling and reduce the unevenness of the surface, thereby achieving a clean surface.

  When the joining plate 22 is larger than the end surfaces 21d of the two end portions of the plastic corrugated board 21, the upper and lower portions 22d of the end surface 21d are obstructive, as shown in FIG. In addition, the excess portion 22d is cut with the cutting blade 28 so as to be aligned with the height of the liner 21a.

  By the above procedure, the two end portions forming the end surfaces 21d of the two plastic corrugated board plates 21 and 21 can be joined, and the joining plate 22 is bent at the joining line 22c that is a portion between the plastic corrugated board plates 21. Thus, the plastic cardboard plates 21 and 21 can be rotated around the joining line 22c. A state where the joining plate 22 is bent is shown in FIG. By this bending, the angle θ can be rotated up to 180 degrees. When the angle θ is increased to 90 degrees, the joint can be a corner of the side wall of the box. When the angle θ is increased to 180 degrees, in this case, the two plastic corrugated boards 21 and 21 become plastic corrugated boards having two flat plates connected in a flat manner.

  Further, as shown in FIGS. 1F and 1G, since the resin derived from the joining plate 22 is pushed between the liners 21a and hardened, the joining plate 22 and the plastic corrugated board 21 are firmly bonded to each other. The plate 22 is not easily peeled off.

  The thickness of the solid plate used as the bonding plate 22 in this embodiment is not particularly limited. In the first embodiment, a joining method in the case where the thickness of the solid plate to be used is made thicker than the optimum thickness for bending will be described with reference to FIG. First, as shown in FIG. 2A, the heat bar 24 is adhered as in the case of FIG. 1, and the thick solid plate 27 is heated. The end face of the plastic corrugated board 21 is pushed into the solid board 27 softened by heating, and the resin existing between the heat bar 24 is pressed and compressed to reduce the amount of resin existing between the end face and the heat bar 24. The substantial thickness of the joining plate is reduced to a thickness that can be easily bent. This reduced state is shown in FIG. 2 (b). At the same time, the end surface is melted and the bonding proceeds. Thereafter, as in the case of FIG. 1 above, after adjusting the end face with the ruler 25 (FIG. 2 (c)), the remaining portion 27d of the pressed resin is cut off, and is almost equivalent to the case of FIG. Can be joined. By using the solid plate 27 having a large thickness in this manner, the adhesion between the solid plate 27 and the resin plate 21 can be further strengthened as compared with the case where the joining plate 22 which is a thin solid plate is used.

  Next, a second embodiment of the joining method according to the present invention will be described with reference to FIG. In this embodiment, a plastic bubble board 26 as shown in FIG. 3A is used as a resin plate to be joined. This is a flat sheet 26a bonded to both surfaces of a cap sheet 26c having a plurality of cap-shaped protrusions 26b. The manufacturing method includes, for example, forming a cap sheet 26c by pressing a melt-extruded sheet by a plurality of cylindrical protrusions from a surface on the base side, and forming a flat sheet on each surface. Examples thereof include a method of thermally welding 26a, a method of forming a cap sheet 26c having the same shape by injection molding, and similarly heat-sealing the flat sheet 26a.

  Two plastic bubble boards 26 are used, and the end face 26d is formed by aligning the ends of the two sheets as shown in FIG. 3A, as in the first embodiment. When the bonding plate 22 is applied to the end face 26d, unlike the first embodiment, since the plastic bubble board 26 has no directionality, it may be applied to any end face. As in the first embodiment, as shown in FIGS. 3B and 3C, the heat bar 24 is applied to the other surface 22b of the joining plate 22 and heated to heat the cap sheet 26c and the end surfaces 26d of the flat sheets 26a and 26a. Is bonded to the bonding plate 22.

  Further, as in the first embodiment, a new end face is prepared by applying the ruler 25, and the upper and lower surplus portions 22d are cut away, so that the plastic bubbles are formed by the joining plate 22 as shown in FIG. A joined plastic bubble board 26 'joined with the board 26 can be obtained. As shown in FIG. 3E, the bonded plastic bubble board 26 ′ is formed by bending the bonded plate 22 at a bonding line 22c that is a portion between the plastic bubble boards 26, as in the first embodiment. The plastic bubble boards 26 and 26 can be rotated around the joining line 22c.

  In addition, in the second embodiment, a plastic bubble board in which the flat sheet 26a is bonded to any one surface of the cap sheet 26c can be similarly bonded, but the flat sheet 26a is provided on both surfaces. In comparison, bonding tends to be insufficient.

  Next, the case where the plastic corrugated board 29 is used for the said joining board as 3rd embodiment is demonstrated. An embodiment in this case is shown in FIG. As in the first embodiment, the end faces of the plastic corrugated board 21 and 21 that are the resin boards to be joined are aligned to form an end face, and the plastic corrugated board 29 made of the same thermoplastic resin as the joining board is formed there. Are placed vertically, the end surfaces of the plastic corrugated board 21 and 21 are applied to one surface, and the heat bar 24 is applied to the other surface. This state is shown in FIG. The end faces of the plastic cardboard plates 21 and 21 are pushed toward the softened and softened plastic corrugated cardboard plate 29 in contact with the heat bar 24 to perform bonding, and the plastic corrugated cardboard plate 29 is compressed while shrinking the cavity between the liners 29a. Compress. This state is shown in FIG. When the cavity between the heat bar 24 and the plastic corrugated board 21 and 21 is almost eliminated and the thickness of the joined portion of the joined plate is compressed to about 0.1 to 1.5 mm, the heating is stopped there. This state is shown in FIG. By compressing to such a thickness, it is possible to bend the joined plate after joining and rotate the plastic cardboard plates 21 and 21 as in the first embodiment. After that, as in the first embodiment, the end face is adjusted by the ruler 25, and the upper and lower portions of the plastic corrugated board 29 are cut off to complete the joining.

  Furthermore, the case where the foamed plastic board 30 is used for the said joining board is demonstrated as 4th embodiment. The foamed plastic board 30 is a plastic board in which a thermoplastic resin is foamed to have independent holes, communication holes, or both inside. As in the first embodiment, the end faces of the plastic corrugated boards 21 and 21 that are the resin plates to be joined are aligned, and a foamed plastic board 30 made of the same thermoplastic resin is vertically set up as the joining plate there. Then, the end face where the end portions of the plastic corrugated board 21 and 21 are aligned is applied to one surface, and the heat bar 24 is applied to the other surface. This state is shown in FIG. The end surfaces of the plastic corrugated boards 21 and 21 are pushed into the foamed plastic board 30 heated and softened by being in contact with the heat bar 24 to perform adhesion, and the cavities in the foamed plastic board 30 are contracted and compressed. This state is shown in FIG. When the hollow portion between the heat bar 24 and the plastic corrugated board 21 and 21 is almost eliminated and the surface in contact with the heat bar 24 is compressed to a flat plate, the heating is stopped there. This state is shown in FIG. At this time, when the joining portion of the foamed plastic boat 30 as the joining plate is compressed to about 0.1 to 1.5 mm, the joining plate is bent and the plastic corrugated board 21 and 21 are rotated. It can be moved. After that, bonding is completed through the same steps as in the first embodiment. In particular, in this embodiment, since the foamed plastic board 30 is easily heated and softened, the joining operation can be performed quickly, so that the working efficiency is better than that of the other embodiments.

  Next, a fifth embodiment in which a plurality of sets of resin plates are joined together by the joining method according to the present invention will be described. The implementation procedure is shown in FIG. First, an even number of plastic corrugated cardboard plates 21 that are resin plates of the same size are stacked, and their end portions are aligned to form an end surface 21d. FIG. 6 shows an example in which eight plastic cardboard plates 21 are used. The joining plate 22 is applied to the formed end face 21d as in the above embodiment. This state is shown in FIG. Similarly to the above, the heat bar 24 is applied to the other surface of the bonding plate 22 and heated to bond the end portions of all the resins forming the end surface 21d and the bonding plate 22 together. This state is shown in FIG. In addition, although not shown in figure, it is good to arrange with an end surface with the ruler 25. The used plastic corrugated board 21 is joined at the end face 21d by the joining plate 22, and an integrated resin plate joined body 81 is obtained. This state is shown in FIG. In this resin plate joined body 81, the remaining portion 22 d above and below the joining plate 22 protrudes, so these are first cut out with the cutting blade 28. The joining plate 22 can be bent at a joining line at a boundary portion while in contact with each plastic corrugated board 21. Among these joining lines, even-numbered joining lines counted from one end of the joining plate 22 are cut by the cutting blades 28, respectively. A joining line to be cut is indicated by 22e in the figure, and a joining line not to be cut is indicated by 22c. This state is shown in FIG. As a result, the bonding resin plates 82 obtained by bonding the two plastic cardboard plates 21 by the cut pieces 22 ′ of the cut bonding plates 22 are obtained in a number half that of the original plastic cardboard plates 21. Each of the bonding resin plates 82 can be bent at an uncut bonding line 22c that was originally an odd number from the end. This state is shown in FIG.

  In the first embodiment shown in FIG. 1 described above, a set of resin plates had to be joined individually, whereas in this embodiment, a larger number of sets of resin plates could be joined at once. it can. In this embodiment, a step of cutting each bonding resin plate 82 from the resin plate bonded body 81 is required. However, even when bonding individually, cutting with the cutting blade 28 to cut off the upper and lower portions 22d. In this embodiment, the number of cutting operations can be reduced. Furthermore, since the bonding process of the joining plate 22 which takes the most time and labor can be completed at once, the time and labor required for the process can be greatly shortened and simplified.

  Furthermore, a sixth embodiment in which a large number of resin plates are continuously joined in one direction by the joining method according to the present invention will be described. The implementation procedure is shown in FIG. First, as shown in FIG. 7 (a), a plastic cardboard plate 21 which is a rectangular and the same size resin plate is overlapped, and a joining plate 22 is applied to an end surface 21d where the end portions are aligned, and the heat bar 24 collects them. Glue. FIG. 7 shows an example using eight plastic corrugated board 21. Although not shown, the end face may be adjusted with a ruler 25.

  Next, as shown in FIG. 7B, the bonding plate 22 is similarly bonded to the end surface 21d 'facing the end surface 21d to which the bonding has been performed. FIG. 7C shows a state in which the opposite end surfaces 21d and 21d 'of the overlapped plastic corrugated board 21 are joined by the joining plate 22. First, the upper and lower surplus portions 22 d of the respective joining plates 22 are cut off by the cutting blade 28. Next, with respect to one joining plate 22 (referred to as a right joining plate in FIG. 7C), the even-numbered joining line counted from the upper end is cut, and the other joining plate 22 (FIG. 7) is cut. In (c), the left joining plate is cut off odd-numbered joining lines from the upper end. In the figure, the joining line to be cut is indicated as 22e, and the joining line not to be cut is indicated as 22c.

  In this way, by alternately switching the portions that are to be cut and the portions that are not to be cut, the plastic is continuously separated in one direction by the piece 22 ′ of the bonding plate that includes the bonding line 22c that is not cut while separating the cut portions. A continuous bonded resin plate 86 to which the corrugated board 21 is bonded is obtained. A conceptual diagram of the obtained continuous bonded resin plate 86 is shown in FIG. The overlapped plastic corrugated board 21 can be made into a single plate that is continuous in one direction by bending a section 22 ′ connecting the end portions with a joining line 22 c. The state is shown in FIG. The expanded continuous bonding resin plate 86 includes a portion where the joining line 22c which becomes the crest of each piece 22 ′ comes out and a place which is located under the section 22 ′ where the joining line 22c which becomes the valley is folded. Appear alternately. Such a continuous bonded resin plate 86 can be longer than the plastic corrugated board 21 obtained by a normal manufacturing method, and therefore can be used when a long plastic corrugated board 21 is required. It should be noted that the end portions of the plastic corrugated board 21 which are both ends of the bonding resin plate 86 are sealed by leaving the sections 22 ′ not involved in the bonding.

  Furthermore, as the form of the resin plate that can be joined in the present invention, a thermoplastic resin non-woven fabric is bonded to the above-mentioned plastic corrugated board, plastic bubble board, foamed plastic sheet or foamed plastic board, or a thermoplastic resin Examples thereof include those obtained by laminating foam layers, plastic cardboards, plastic bubble boards, foam plastic sheets, and those obtained by further laminating foam plastic boards. In addition, you may use the solid board which does not have a hollow part inside as said resin board. Furthermore, the cap sheet of the plastic bubble board is not limited to the above-mentioned shape. For example, the cap sheet is formed so as to form a protrusion from both sides, or the protrusion is other than a cylinder. It can also be any form.

  Examples of the thermoplastic resin constituting the plastic corrugated boards 21 and 29, the joining plate 22, the plastic bubble board 26, and the foamed plastic board 30 used in these embodiments include polyolefins such as polypropylene and polyethylene. Among these, in particular, it is easy to manufacture if it is made of polypropylene due to the temperature required for melting.

  In any of the above-described joining methods, the resin plate can be joined to the joining plate to obtain a rotatable joining resin plate. Such a bonding resin plate can be used for a member that needs to change an angle by rotation. Specifically, it can be used, for example, on the side wall of a plastic cardboard box that can be folded.

  Next, an embodiment of a resin box in which the side wall can be folded using a bonded resin plate bonded by the bonding method according to the present invention will be described. A first embodiment of the resin box is shown in FIG.

  First, as shown in FIG. 8A, four plastic cardboard plates 21 are prepared. Each of these becomes the side wall of the resin box. Two of them are overlapped and the end portions are aligned to form an end face 21d, which are joined by the joining plate 22 by the joining method described above. FIG. 8B shows a joined plastic corrugated board 21 'obtained by joining. Each of the two bonded plastic corrugated cardboard plates 21 ′ and 21 ′ is bent at the bonding line 22 c and spreads as shown in FIG. 8C so that the angle θ is 180. The spread bonded plastic corrugated cardboard plates 21 'and 21' are overlapped with the exposed side of the bonding line 22c facing each other, and the end portions that are not yet bonded are aligned to form an end surface 21d '. This state is shown in FIG. Each of the end faces 21d 'that have not yet been joined is brought into contact with the joining plate 22 and joined by the above method. The state after joining is shown in FIG. Four plastic cardboard plates 21 are rotatably joined to other plastic cardboard plates 21 at end faces 21d and 21d 'parallel to the ribs 21b. By setting the bending angle θ at each joint line 22c to 90 degrees, a quadrangular prism-shaped cylinder can be formed as shown in FIG.

  As the resin box, there is separately prepared a bottom board 33 including a square and flat bottom plate 31 and a frame plate 32 standing upright around the bottom plate. The bonded plastic corrugated cardboard plate 21 ′ manufactured in the above-described embodiment is formed as a side wall 35, and the lower part of the side wall is bonded to the frame plate 32 and bonded to the bottom plate 33. By placing them without plastic, a plastic cardboard box which is a resin box can be formed. Further, a top plate 36 that covers the upper end of the side wall 35 is placed on the upper side of the side wall 35.

  In the plastic cardboard box of this embodiment, a plastic cardboard plate that is generally manufactured can be used as it is for each surface of the side wall, so that the circumference of the side wall can be increased. The length of the plastic corrugated board 21 in the direction perpendicular to the ribs 21b depends on the scale of the manufacturing apparatus that performs extrusion molding of the thermoplastic resin, and cannot be increased without limit. In the conventional method, since the limited width is divided into four sides, the circumference of the peripheral wall is remarkably limited. However, by the joining method according to the present invention, the size of the circumference is simply quadrupled. Can be enlarged.

  Next, a second embodiment of the resin box will be described. The manufacturing procedure of the resin box in this embodiment is shown in FIG. In this embodiment, a plastic corrugated board 21 is used as a resin plate constituting the side plate, in which a V-shaped groove is engraved at a predetermined location and is rotatable about the bottom of the groove.

  First, a heat bar 41 having a V-shaped cross section is pressed against a portion of the plastic corrugated board 21 where a turning shaft to be bent is formed. A cross-sectional view at that time is shown in FIG. The heat bar 41 is a metal part having a temperature at which the thermoplastic resin constituting the plastic corrugated board 21 can be melted by heat, and the contact surface is processed with a fluororesin to prevent the thermoplastic resin from adhering. In addition, even if the heat bar 41 is pressed through a fluororesin-processed plastic sheet instead of processing the heat bar 41 with the fluororesin, adhesion of the thermoplastic resin to the heat bar 41 can be similarly prevented. By pressing the heat bar 41, a predetermined portion of the plastic corrugated board 21 is compressed into a V-shaped cross section as shown in FIG. 9B. At this time, care should be taken not to heat-cut the plastic corrugated board 21 by pushing the heat bar 41 too much. At least the lower liner 21a is connected. As a result, a groove 21f having a V-shaped cross section as shown in FIG. 9C is formed on one surface 21e.

  In this way, two plastic corrugated cardboard plates 21 ″ having the same size with a V-shaped groove 21f are created, and the one surface 21e on the side with the groove 21f is faced to each other, and the ends are aligned. An end face 21d is formed, and this state is shown in Fig. 9 (d), and the joining plate 22 is bonded and joined to the end face 21d by the joining method according to the present invention.

  FIG. 9E shows a bonded plastic corrugated board in which both end surfaces are bonded to each other in this way. The both sides 21h of the groove 21f are aligned with each other with the bottom 21g of the groove 21f as an axis, and the angle θ is opened with the bonding line 22c of the bonding plate 22 as the axis, thereby forming a rectangular columnar side wall as shown in FIG. 45 can be formed. By forming the side wall 45 into a cylindrical shape and placing it on the same base as in FIG. 6 and covering the top, a plastic cardboard box, which is a resin box, can be obtained. Further, when storing, it can be stored compactly by removing it from the bottom plate and the top plate and returning the side wall to the folded state shown in FIG.

  Further, a third embodiment of the resin box will be described with reference to FIG. As shown in FIG. 10 (a), two joined plastic corrugated cardboard plates 51 joined by the joining method according to the present invention are prepared, and a joining line serving as a rotation axis is formed on each joined plastic corrugated board 51. After opening so that the angle θ by the original plastic corrugated cardboard at the center becomes 180 degrees, the end surface 21d that has not yet been bonded is joined to the surface opposite to the previously joined joint line 52 by the joining line 53. In this way, it is joined to the end face of another plastic corrugated board 54 so as to have a cylindrical shape. Among these, the joint part (corresponding to 52 in the figure) with the joint line facing outward is extended to 180 degrees, and the joint part with the joint line facing inward (corresponding to 53 part in the figure). Can be used as a resin box as a side wall as shown in FIG. 10A by placing it on the bottom plate 33 similar to FIG.

  When the resin box is dismantled, the side wall is removed from the bottom board 33, and a connection point (a portion corresponding to the bonding line 52 previously bonded) widened 180 degrees in the middle of the side wall as shown in FIG. Is folded inward, and the angle θ of all joints is folded to 0 degree. FIG. 10C shows this folded state.

  In this third embodiment, the pair of side surfaces can be folded in half as shown in FIG. 10 (c) when folded, so that the lateral width when folded is greater than in the case of the first embodiment. Can also be reduced.

  Next, a fourth embodiment of the resin box will be described with reference to FIG. As shown in FIG. 11A, the side walls used in this embodiment are respectively provided on both end faces 62 parallel to the unbonded ribs of the joined plastic corrugated board 61 joined by the joining method according to the present invention. The end face 64 of the plastic corrugated board 63, 63 prepared separately is joined. In the joining, the joining is performed after the angle θ of the original plastic corrugated board 61 with the joining line 65 of the plastic corrugated board 61 joined as the axis is expanded to 180 degrees. Also, the joining line 65 of the joining part joined first and the joining line 66 of the joining part joined later are the opposite surfaces of a single plate in which the angle θ of the joining plastic corrugated board 61 is widened to 180 degrees. To be present. The bonded plastic corrugated board 67 bonded in this way forms three surfaces of the peripheral wall of the resin box.

  Furthermore, the support | pillar 71 is joined to the end surface 69 which has not yet joined the plastic corrugated board 63 which forms the surface used as both ends among three connected surfaces. This support 71 has U-shaped frame portions 72 and 73 with an angular difference of 90 degrees, and the height is more than half of the height when the plastic corrugated board 63 is used as a peripheral wall. The height of the plastic corrugated board 63 is assumed to be smaller.

  One of the frame portions 72 is joined to the end face 69 that is not yet joined. In joining, both sides of the end face 69 are sandwiched by the frame portion 72, and then joined by an arbitrary method such as heat welding by heating, welding by ultrasonic waves, joining by metal or resin rivets, joining by pins, and the like. Do. It is assumed that the attachment position is in contact with the lower surface of the plastic corrugated board 63 serving as a peripheral wall, and has a portion not joined to the support on the upper side. Further, it is assumed that the remaining U-shaped frame portions 73 that are not joined face each other as illustrated in FIG. The plastic corrugated board 63 may be sealed with the above-mentioned solid board or the like in advance before being joined to the support 71.

  The joined plastic corrugated board 67 is developed so that the angle θ of the previously joined portion is 180 degrees and the angle θ of the joined portion is 90 degrees later, and placed on the bottom board 70. The bottom board 70 is provided with a frame member 74 along each periphery. The width of the frame member 74 is a width that can be fixed with the plastic corrugated board 61 and 63 and the support 71 interposed therebetween.

  In this state, there is no peripheral wall between the opposed U-shaped frame portions 73 that are not fitted with anything, so when introducing a load into the frame, it is not lowered from above, but passes between the columns 71. Can be inserted from the side. When the baggage has been put in, the plastic corrugated board 75 is separately lowered so as to be sandwiched between the frame portions 73 that are not yet joined to the support columns 71. This state is shown in FIG. The plastic corrugated board 75 to be lowered to the last side is joined with support pillars 77 similar to the support pillars 71 at both ends on the upper side when installed. The column 77 has U-shaped frame portions 78 and 79 similar to those of the column 71 described above, and one of the frame portions 79 is made of plastic corrugated cardboard by a method such as heat welding as described above. It is joined to both upper ends of the plate 75. Further, the frame portion 78 that is not joined faces in the same direction, and when the frame portion 78 is lowered between the support columns 71, the frame portion 78 is still joined to the joined plastic corrugated board 67 previously lowered onto the bottom board 70. The upper part of the non-end face 69 is sandwiched. That is, the height of the support 71 and the support 77 is the same as the height of the plastic corrugated boards 61, 63, 75.

  On the other hand, the joining plastic corrugated board 67 used as a surrounding wall can be stored compactly like FIG.11 (c) by returning each joining board 22 to the original state. At this time, it is preferable to slightly shift the U-shaped frame portions of the support 71 that do not interfere with each other.

  The end surface 69 of the joined plastic corrugated board 61 used as the side wall and not joined and the end face 76 of the plastic corrugated board 75 used as the last peripheral wall are the same plates as the joined plate 22 and are heated and pasted by the heat bar. Thus, it is preferable to seal each end face. Alternatively, a heat bar may be applied to the end surface 76 to melt the resin, and the flat surface may be flattened and sealed. In addition, what processed the fluororesin in any case may be used, and you may seal through the sheet | seat which processed the fluororesin. This is because the cross section of the liner can be prevented from being exposed, and the end surface can be finished to be flat and attractive.

  Next, an embodiment for manufacturing a plurality of cylindrical walls at once by joining together a large amount of the joining resin plates 82 obtained at once by the joining method shown in FIG. 6 will be described with reference to FIG. To do. First, an even number of bonded resin plates 82 are prepared and stacked. At this time, each bonding resin plate 82 spreads the piece 22 'of the bonded bonding plates, spreads the bonded plastic corrugated board 21 until it becomes a single plate, and the plastic corrugated board 21 The formed inner corner side joining line 22c is exposed. The exposed inner corner side joining line 22c is made to face the inner corner side joining line 22c which is the other joint resin plate 82 exposed. That is, the two bonding resin plates 82 are spread and stacked face to face. This situation is shown in FIG. In FIG. 12A, four sets of eight bonding resin plates 82 are overlapped with the bonding lines 22c of the bonding resin plates 82 constituting each set facing each other.

  Next, end surfaces 83 and 84 are formed by aligning the end portions of both wings parallel to the bonding line 22c of the overlapping bonding resin plates 82. This state is shown in FIG. Similar to the above-described embodiment, first, the joining plate 22 that covers the entire end face 83 is applied to one end face 83 and bonded by the heat bar 24. Next, the joining plate 22 is also applied to the other end face 84 and bonded by the heat bar 24. This state is shown in FIG. Although not shown, the end face may be adjusted with a ruler 25. After the end faces 83 and 84 at both ends are bonded with the joining plate 22, first, the upper and lower surplus portions 22d of each joining plate 22 are cut off with a cutting blade. Further, the joining plate 22 is cut along even-numbered joining lines counted from the end. The relationship of the cutting lines for cutting is shown in FIG. That is, a set of bonding resin plates 82 with the bonding lines 22c facing each other is cut out.

  FIG. 12E shows a four-plate joined body 85 obtained by joining the end faces of the pair of joined resin plates 82 cut out. The four-plate bonded body 85 opens the newly bonded and cut piece 22 'and returns the bending angle of the previously cut and cut piece 22' to 90 degrees so that the four plastic corrugated boards 21 are arranged on the four sides. It can be used as a cylindrical wall (shown at the bottom of FIG. 12 (e)). Conversely, when stored after use, the entire set can be folded into a flat plate by opening the pair of pieces 22 'facing each other and returning the remaining set of pieces to the flat plate. This cylindrical wall can be used as a part of the box in the same manner as the cylindrical wall shown in FIG.

  Next, an embodiment in which a cylindrical wall is obtained by further combining the continuous joining resin plates 86 obtained by the joining method shown in FIG. This embodiment is shown in FIG. First, as shown in FIG. 13A, two continuous bonded resin plates 86 are prepared in which four plastic corrugated cardboard plates 21 are connected together by the bonding method shown in FIG. With these two ends (91, 95) and the central piece (93) facing each other, the joining line on the inner corner side of the first and third pieces (92, 94) is the other continuous joining resin plate. Each piece is bent so as to face each joining line 86, and the continuous joining resin plates 86 are stacked as two spread plates. At that time, both ends 91 and 95 are aligned to form end faces. This state is shown in FIG. As shown in FIGS. 13 (b) and 13 (c), the joining plate 22 is applied to the end surfaces of both ends 91 and 95, respectively, and is adhered by the heat bar 24. In addition, you may arrange an end surface with the ruler 25 also for these. Moreover, the excess part 22d of the joining board 22 is excised similarly to said process.

  FIG. 13D shows a state where both end portions 91 and 95 are bonded in the above-described process and joined by the sections 91 ′ and 95 ′. The new sections 91 ′ and 95 ′ are bent to 180 degrees, and the adjacent sections 92, 92, 94, and 94 are folded back to 90 degrees, so that each side of the plastic corrugated board 21 has two sections 91 ′. , 95 ′, 93, 93, and can be a cylindrical wall. The state of this cylindrical wall is shown in FIG.

  This embodiment is not limited to the continuous joining resin plate 86 formed of the four plastic corrugated cardboard plates 21 shown in FIG. Therefore, even if a continuous bonding resin plate 86 made of six or more plastic corrugated cardboard plates 21 is used, a similar cylindrical wall can be obtained by aligning the end portions and bonding them in the same manner. In this case, since the length from 92 to 94 in FIG. 13 is further increased, the obtained cylindrical wall is not a square section but a rectangular section.

  In addition, the continuous joining resin board 86 obtained by embodiment of said FIG. 7 can be used as the wall which surrounds three directions by itself. The embodiment is shown in FIG. As shown in FIG. 14A, a continuously bonded resin plate 86 in which six plastic corrugated cardboard plates 21 are connected together is used. The sections (102, 104, 106) bonded by the joining plate 22 different from both ends (101, 107) of one continuous connection are bent 180 degrees, and the same joining is made to both ends (101, 107). The section (103, 105) bonded by the plate 22 is bent to 90 degrees. In this way, the section (103, 105) bent 90 degrees becomes a corner and the section (102, 104, 106) bent 180 degrees becomes a half of one side, and can be used as a wall surrounding three directions. Such a three-way wall can be used similarly to the three-way wall shown in FIG.

(A) A perspective view of a plastic corrugated board in the first embodiment of the joining method, (b) a perspective view in a state in which end faces are aligned, (c) a sectional view in a state in which the joining board is applied to the end faces, (d) a heat bar (E) Cross-sectional view when applying a ruler, (f) Cross-sectional view when cutting off the remaining part of the joining plate, (g) Bending the joining plate at the joining line Sectional view (A) A cross-sectional view when the thickness of the solid plate is increased, (b) a cross-sectional view when compressing the thick solid plate, (c) a cross-sectional view when applying a ruler after compression, (d) a surplus portion Cross section when excising (A) Perspective view of plastic bubble board in the second embodiment of the joining method, (b) A sectional view in a state where the joining plate is applied to the end face and the heat bar is brought close, (c) A sectional view when the end face is adjusted with a ruler , (D) Cross-sectional view of the bonded plastic foam board after cutting off the surplus part, (e) Cross-sectional view of the state where the bonded plate is folded at the bonding line (A) Sectional view when joining plastic corrugated board in the third embodiment of the joining method, (b) Sectional view when compressing the plastic corrugated board used for the joining board, (c) Cross section after the used plastic corrugated board is compressed (A) Sectional view at the time of joining using the foamed plastic board in the fourth embodiment of the joining method, (b) Sectional view at the time of compressing the foamed plastic board, (c) Finishing the compression of the foamed plastic board Cross section after (A) Cross-sectional view in a state where end portions are aligned in an embodiment in which a plurality of sets of plastic corrugated board are bonded together, (b) a cross-sectional view when bonding is performed by applying a bonding plate to an end surface, and (c) bonding plate Sectional drawing at the time of cutting the surplus part after bonding, (d) Perspective view at the time of cutting even-numbered bonding lines, (e) Perspective view of the obtained plural sets of bonding resin plates (A) Cross-sectional view of a state in which a plurality of plastic corrugated boards are connected in a row, with the end portions aligned and a joining plate applied to one end surface, (b) a cross-sectional view when bonding the end surfaces facing each other , (C) Cross-sectional view when cutting the bonding line of the bonding plate, (d) Cross-sectional view of the continuous bonding resin plate after cutting, (e) Cross-sectional view of the continuous bonding resin plate in which all the sections are folded by 180 degrees and expanded. FIG. 1 is a diagram of a first embodiment of a resin box, (a) a cross-sectional view of four plastic corrugated cardboard plates and a joining plate prepared first, (b) a cross-sectional view of a joined plastic corrugated cardboard plate joined with the joining plate, c) A cross-sectional view of a state in which the bonded plastic corrugated board is spread around the bond line, (d) a cross-sectional view in which the surfaces having the bond lines are faced to each other, and (e) a state in which the remaining end surfaces are bonded. (F) Perspective view of resin box using bonded plastic corrugated board The figure of 2nd embodiment of resin-made boxes, (a) Sectional drawing of the state which applies a cross-section V-shaped heat bar to a plastic corrugated board, (b) Sectional drawing at the time of forming a slot in a plastic corrugated board with a heat bar, (C) A cross-sectional view of a plastic corrugated board engraved with a V-shaped groove, (d) a cross-sectional view when two plastic corrugated boards engraved with a groove are stacked, and (e) a cross-sectional view of each end face joined together (F) Cross-sectional view when the both sides of the groove are aligned and the joining portion is opened 90 degrees to form a cylindrical side wall The figure of 3rd embodiment of a resin box, (a) The conceptual diagram of the state which mounts a joining plastic corrugated cardboard board on a bottom board as a surrounding wall, (b) The conceptual diagram at the time of folding a surrounding wall, (c) The state of folding the surrounding wall Conceptual diagram Fig. 4 is a diagram of a fourth embodiment of a resin box; (a) a conceptual diagram of a bonded plastic corrugated board having two support columns and surrounding walls in three directions; and a bottom board; and (b) a bonded plastic corrugated board on the bottom board. (C) Conceptual diagram of the state in which the side wall is folded (A) Cross-sectional view when stacking bonding resin plates in an embodiment in which a cylindrical wall is manufactured from a plurality of sets of bonding resin plates, (b) Cross-section when bonding plates are bonded to end faces with aligned end portions Figure, (c) Cross-sectional view when bonding plate is bonded to the other end surface, (d) Cross-sectional view showing a cut portion when cutting out the four-plate bonded body, (e) Four-plate bonded body to the cylindrical wall Perspective view when unfolding (A) A cross-sectional view when facing each other to bond two continuous bonding resin plates, (b) a cross-sectional view when bonding the end surfaces aligned by opening the continuous bonding resin plates, and (c) another Sectional view when bonding one end face, (d) Sectional view after bonding both end faces, (e) Sectional view when deployed on a cylindrical wall (A) Cross-sectional view when the continuous bonding resin plate is expanded, (b) Cross-sectional view when the continuous bonding resin plate is expanded to form a three-way wall The figure of the formation method of the side wall made from a plastic corrugated board by the method of patent document 1, (a) Sectional drawing of a plastic corrugated board and a heat bar, (b) Sectional drawing of the state which applied the heat bar, (c) Bending the bottom part as a hinge part Cross-sectional view of the state, (d) Cross-sectional view of a rectangular cylinder, (e) A conceptual diagram of the situation during storage, (f) A conceptual diagram when using the cylindrical shape as a side wall of a box (A) Conceptual diagram of a plastic bubble board with a flat sheet affixed to the bottom side of the cap sheet, (b) Conceptual diagram of a plastic bubble board with a flat sheet affixed on the protrusion of the cap sheet, (c) Cap sheet Conceptual diagram of plastic bubble board with flat sheets pasted on both sides (A) Conceptual diagram of hinged column, (b) Conceptual diagram of resin box using hinged column

Explanation of symbols

1 Plastic corrugated board 1 'Plastic corrugated board after processing (peripheral wall)
DESCRIPTION OF SYMBOLS 1a Liner 1b Rib 2 Heating iron 3 Groove 4 Bottom part 5 Frame 6 Bottom board 11 Plastic bubble board 11a Flat sheet 11b Protrusion 11c Cap sheet 12 Support part 13 Hinge part 14 (with hinge) Post 15 Bottom board 16 Side board 17 Top board 18 Box 21 Plastic corrugated board 21 ′ Joined plastic corrugated board 21 ”(corrugated) plastic corrugated board 21a liner 21b rib 21c (exposed rib cross section) end 21d (exposed rib cross section exposed) end face 21e Surface 21f Groove 21g Bottom 21h Both surfaces 22 Bonding plate 22a One surface 22b Other surface 22c Bonding line 22d Surplus portion 22 '(joining plate) section 23 stand 23a step 24 heat bar 25 ruler 26 (sheet on both sides of cap sheet) Affixed plastic foam board 26 ' Plastic bubble board 26a Flat sheet 26b Protrusion 26c Cap sheet 26d End face 27 (Thick) Solid plate 28 Cutting blade 29 Plastic corrugated board 30 (used as a joining plate) Foamed plastic board 31 Bottom plate 32 Frame plate 33 Bottom plate 35 Side wall 36 Top plate 41 Heat bar 45 (V-shaped cross section) Side walls 51, 54 Bonded plastic corrugated board 52, 53 Bonding line 61 Bonded plastic cardboard board 62 End face 63 Plastic cardboard board 64 End face 65, 66 Bonding line 67 (forming three faces) Corrugated board 70 Bottom board 71, 77 Post 72, 73, 78, 79 Frame part 74 Frame material 75 Plastic cardboard board 81 Resin board joined body 82 Joined resin board 83, 84 End face 85 Four board joined body 86 Continuous joined resin board 91, 95 End 92, 93, 94 Piece 101 and 107 (resin plate with each other to form a joining line as an axis) end 102-106 intercept θ angle

Claims (13)

A method for joining resin plates made of thermoplastic resin,
One of the joining plates made of the thermoplastic resin having a size that covers the end surfaces of the two resin plates on one of the end surfaces formed by overlapping two resin plates and aligning the end portions. By heating the joining plate from the other surface, the joining plate and each end face of the two resin plates in contact with the joining plate are softened to a deformable strength,
By pressing and adhering the softened end surface of the resin plate and one surface of the joining plate,
After bonding the joining plate to the end face, while the joining plate is at a deformable temperature, the other surface of the joining plate is applied with a ruler whose surface is processed with a fluororesin, or a plastic processed with a fluororesin Apply a ruler through the sheet, arrange the other side into a flat plate,
The ends of the two resin plates are joined to each other by the joining plate, and the joining plates are bent at a joining line between the resin plates, so that the two resin plates are hinged about the joining line. A resin plate joining method that can be rotated. A method for joining resin plates made of thermoplastic resin,
Overlapping two sheets of resin plates, to one of the end surface was formed by aligning the ends, a size to cover an end face of the resin plate two partial foaming inside me the thermoplastic resin der The bonding plate is a hollow structural plate having a hollow portion formed by a method other than 1 mm and having a thickness of 1 mm to 15 mm , and one surface of the bonding plate is applied, and the bonding plate is heated from the other surface, , Soften each of the end faces of the two resin plates in contact with the joining plate to a deformable strength,
The end surface of the softened resin plate and one surface of the bonding plate are pressed and bonded , the hollow portion is compressed during the bonding, and the thickness of the bonded portion after bonding is 0.1 mm or more and 1.5 mm or less as a,
The ends of the two resin plates are joined to each other by the joining plate, and the joining plates are bent at a joining line between the resin plates, so that the two resin plates are hinged about the joining line. A resin plate joining method that can be rotated. A method for joining resin plates made of thermoplastic resin,
Overlapping two sheets of resin plate, inside one of the end surface was formed by aligning end and a size resin I wherein the thermoplastic resin der covering the end face of the resin plate two minutes By applying one surface of a joining plate which is a foamed plastic sheet or foaming plastic board having a thickness of 0.5 to 15 mm having a hollow portion foamed from the above, and heating the joining plate from the other surface, Softening the joining plate and the respective end faces of the two resin plates in contact with the joining plate to a deformable strength,
The softened end face of the resin plate and one surface of the joining plate are pressed and bonded together , and the hollow portion due to foaming is compressed during the bonding, and the thickness of the bonded portion after bonding is 0.1 mm or more. as a 5mm or less,
The ends of the two resin plates are joined to each other by the joining plate, and the joining plates are bent at a joining line between the resin plates, so that the two resin plates are hinged about the joining line. A resin plate joining method that can be rotated. After bonding the joining plate to the end face, while the joining plate is at a deformable temperature, the other surface of the joining plate is applied with a ruler whose surface is processed with a fluororesin, or a plastic processed with a fluororesin The method for joining resin plates according to claim 2 or 3 , wherein a ruler is applied through the sheet to arrange the other surface into a flat plate shape. A method for joining resin plates made of thermoplastic resin,
One surface of the joining plate made of the thermoplastic resin having a size covering the end surface is overlapped with one of the end surfaces formed by aligning four or more resin plates and aligning the end portions. By heating the joining plate from the other surface, the joining plate and the respective end portions of all the resin plates in contact with the joining plate are softened to a deformable strength,
Pressing and adhering the softened end of the resin plate and one surface of the joining plate, and joining the end surfaces of the aligned resin plates together by the joining plate,
By cutting only the bonding line corresponding to the even number counted from the end of the bonding plate among the bonding lines on the bonding plate where the resin plates are in contact with each other,
The end faces of the two resin plates are joined to each other by a piece of the joining plate, and the set of joined resin plates are hinged around the joining line that is an odd number when counted from the end of the joining plate. A method of joining a plurality of sets of resin plates that can be rotated in a shape. A method for joining resin plates made of thermoplastic resin and having a flat plate surface having a rectangular shape,
Three or more resin plates are stacked, and among the end surfaces formed by aligning the end portions, a pair of facing end surfaces is applied with a joining plate that is sized to cover the end surfaces and made of the thermoplastic resin, respectively. By heating the bonding plate from the other surface opposite to the one surface applied to the end surface, the bonding plate and the respective end portions of all the resin plates in contact with the bonding plate can be deformed. Soften to a strong strength,
Pressing and adhering the softened end of the resin plate and one surface of the joining plate, and joining each of the facing end surfaces of the aligned resin plates together by the joining plate,
Among the bonding lines on the bonding plate, where the resin plates are in contact with each other, one of the bonding plates is counted from the end, and the other bonding plate is counted from the same end. By cutting the joint line corresponding to the even number with a cutting blade,
A plurality of resin plates in which end surfaces of the adjacent resin plates are joined to each other by a piece of the joining plate, and the adjacent resin plates can be rotated in a hinge shape around the joining line that has not been cut. Joining method. After bonding the joining plate to the end face, while the joining plate is at a deformable temperature, the other surface of the joining plate is applied with a ruler whose surface is processed with a fluororesin, or a plastic processed with a fluororesin The method for joining resin plates according to claim 5 or 6 , wherein a ruler is applied through the sheet to arrange the other surface into a flat plate shape. The joining plate is a hollow structural plate having a thickness of 1 mm or more and 15 mm or less having a hollow portion formed by a method other than foaming inside, and compressing the hollow portion at the time of bonding, The method for joining resin plates according to any one of claims 5 to 7 , wherein the thickness is 0.1 mm or more and 1.5 mm or less. The joining plate is a foamed plastic sheet or a foamed plastic board having a thickness of 0.5 to 15 mm having a hollow portion obtained by foaming resin from the inside, and compresses the hollow portion due to foaming for bonding. The resin plate joining method according to any one of claims 5 to 7 , wherein a thickness of a subsequent joined portion is set to 0.1 mm or more and 1.5 mm or less. Rotatable coupling resin plate obtained by bonding the resin sheet at a bonding method according to any one of claims 1 to 9. The cylindrical wall which connected the said resin board in the cylinder shape with the joining method in any one of Claims 1 thru | or 9 . A bottom plate composed of a square and flat bottom plate, and a frame plate standing upright around the bottom plate;
It consists of the said resin board joined by the joining method in any one of Claims 1 thru | or 9 , It is set | placed on the said bottom board without joining, At least one part of the lower part contact | connects the said frame board, A side wall part of which is a corner,
A resin box in which the side wall can be folded into a flat plate shape when dismantling. The resin box according to claim 12 , wherein at least one of the resin plates has a groove having a V-shaped cross section on one surface, and the bottom of the groove can be rotated as a hinge.

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