JPH0731665U - Assembled cushioning material for packing - Google Patents

Abstract

(57) [Summary] [Purpose] Assembled as a cushioning material for packaging with excellent compressive strength, cushioning property, mass production effect, etc. by continuously bending it from corrugated cardboard. [Structure] A square or rectangular corrugated cardboard (M) is provided with a plurality of folding ridges (10a) (10) parallel to one side thereof.
b) (11) to (19) and one bending ridgeline (39) orthogonal to these are imprinted, and first inwardly and continuously bent from the plurality of parallel bending ridgelines to obtain a cross section. The rectangular first and second rectangular cylinders (A1) and (A2) are assembled, and then the both rectangular cylinders (A1) and (A2) are assembled into a unit having an L-shaped cross section when viewed from the mouth end, and finally the above-mentioned orthogonal one Bending inward from the bent ridgeline, the overall V-shape in flat / bottom view was obtained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a prefabricated cushioning material for packaging.

[0002]

[Prior art]

 Foamed plastic products such as polystyrene foam have been widely used as cushioning materials for packaging, and it is customary to stuff them in the gap between the outer box and the product to safely protect the product from external forces. Is.

[0003]

[Problems to be solved by the device]

 However, since the above-mentioned cushioning material is a plastic molded product, it is necessary to prepare various kinds of products having different three-dimensional shapes and sizes, and as a result of the provisional light weight, the leopard becomes bulky, resulting in a large inventory. It requires a large installation space because it is difficult to store.

Further, since it is a foamed plastic product, there is a problem that it is difficult to recycle and use it when it is discarded or incinerated, which damages the natural environment. In this respect, paper tubes can be reused, but they still require a large installation space for inventory and storage.

[0005]

[Means for Solving the Problems]

 The present invention is intended to solve such a problem, and for that purpose, a single piece of corrugated paperboard having a square or rectangular outline shape in construction is provided with a plurality of folding ridge lines parallel to an arbitrary side thereof. , One folding ridge line orthogonal to the folding ridge line is marked, and one end portion of the corrugated ball paper is folded into a V-shape from the one folding ridge line located on one end side of the corrugated cardboard paper. As a result, the first supporting piece is formed, and the corrugated paper is successively bent from the remaining several folding ridge lines inward at right angles toward the other end side of the corrugated paper, from the first supporting piece. While assembling the first rectangular cylinder with a large rectangular cross section that encloses the bracing piece,

From one bent ridgeline located on the other end side of the corrugated paperboard, the other end portion of the corrugated paperboard is bent into a mountain shape to form a second projecting piece, and from the second projecting piece, the corrugated paperboard is continued. Assemble into a second rectangular tubular body with a small rectangular cross section that encloses the second bracing piece by sequentially bending the corrugated paperboard toward the opposite end side from the remaining several folding ridgelines inward at right angles. In addition, the first and second prismatic cylinders are bent at a corner portion thereof so that the first and second prismatic cylinders are separated from each other by a constant distance having substantially the same dimension as the short side and the constant distance is continuously closed. After assembling into an overall cross-section L-shaped unit that intersects with the second prism by bending and bending inward at a right angle from the ridge line, the unit with an L-shaped cross section can be bent as described above. It is characterized in that it is bent inward at a right angle from one bending ridge line that is orthogonal to the direction, and is finished into a V-shape in flat / bottom view.

[0007]

[Action]

 According to the above configuration of the present invention, since it is made of a single piece of corrugated paper, it can be stacked in a developed state and stored and stored in a large amount. Compared to plastic molded products and paper tubes, it has excellent space saving, mass production, and recycling effects.

[0008] Further, anyone can very easily assemble and use the above corrugated cardboard paper, and in the assembled state, the tension pieces are all wrapped inside the first and second rectangular cylinders having a rectangular cross section. Therefore, it is possible to exert effective compressive strength and cushioning property by the tension piece.

Further, the first and second rectangular cylinders having the rectangular cross section are assembled into a unit having an L-shaped section when viewed from the mouth end surface thereof, and then finished into an overall V-shape in flat / bottom view. Therefore, it can be inserted and used in a stable state in which it contacts both the standing side wall surface and the top wall surface or the bottom wall surface at the corner of the outer box, and it is possible to remarkably protect the product. Becomes

[0010]

【Example】

 The concrete constitution of the present invention will be described in detail below with reference to the illustrated embodiment. The cushioning material of the present invention is a piece of corrugated cardboard paper (M) punched into a rectangular or square contour shape as shown in FIG. By first sequentially bending in one direction to form a pair of a first rectangular cylinder (A1) with a large rectangular cross section and a second rectangular cylinder (A2) with a small rectangular cross section, and then By continuously assembling each pair as an L-shaped unit, which is almost right angle when viewed from the so-called mouth side, and further by bending each pair of the units inward at right angles from the direction orthogonal to the bending direction, As a whole, it is finished in a flat and bottom V-shape as shown in Fig. 1.

That is, in FIG. 2 showing the expanded state of the cushioning material, (10a) (10b) (11) (12) (13) (14) (15) (16) (17) (18) (19). ) Is a plurality of foldable ridge lines that extend in parallel along the left-right lateral direction of the corrugated cardboard (M) as shown in the drawing, and can be punched simultaneously with the contour punching of the corrugated cardboard (M) or separately. It is engraved. The corrugated paper (M) is composed of a pair of liners and a core, but details thereof are omitted.

Regarding the plurality of folding ridgelines (10a) (10b) (11) to (19), the two located on the uppermost side and the lower side of the corrugated paperboard (M) in FIG. 2 As the outward bending ridgelines (10a) and (10b), the remaining nine intermediate positions are set as the first to ninth inward bending ridgelines (11) to (19), respectively.

For convenience of explanation of the folding operation, the reference numerals of the first to fifth inward folding ridgelines (11) to (15) are arranged in order from the upper side to the lower side of the corrugated paper (M). The symbols of the sixth to ninth inward folding ridgelines (16) to (19) are written in order in the reverse order from the lower side to the upper side of the corrugated cardboard (M).

In that case, the mutual band of the first and second inward bending ridge lines (11) and (12), the mutual band of the third and fourth inward bending ridge lines (13) and (14), and the sixth and seventh inward bending ridges. The mutual band of the lines (16) and (17) and the mutual band of the eighth and ninth inwardly bent ridgelines (18) and (19) are both the first and second rectangular tubular bodies (A1) and (A2) having the rectangular cross section. Is sized almost identically to form the short side (x) of the.

Further, the mutual band of the second and third inward bending ridge lines (12) and (13), the mutual band of the fourth and fifth inward bending ridge lines (14) and (15), and the fifth and ninth inward bending ridge lines ( 15) Although the mutual zones of (19) form the long side (y1) of the first rectangular tubular body (A1) having a large rectangular cross section, they are dimensioned in the same manner, but the The mutual zone of the inwardly bent ridgelines (17) and (18) is the second rectangular cylinder (A2) having a rectangular cross section and has a long side (y2). It is dimensioned to be shorter than the long side (y1) of 1).

Further, the mutual band between the upper edge of the corrugated paper (M) and the first inwardly bent ridgeline (11) is slightly wider than the long side (y1) of the first rectangular tubular body (A1). The first outwardly bent ridgeline (10a) interposed in the middle is bent so that it can be bent in a substantially H-shape.

The upper end of the corrugated paper (M) is shaped as a V-shaped first strut (20), and the strut (20) has a large rectangular cross section. By being embedded in the hollow interior, the compression strength up of the first rectangular cylinder (A1) can be achieved.

On the other hand, the mutual zone between the lower edge of the corrugated paper (M) and the sixth inwardly bent ridgeline (16) is slightly wider than the long side (y2) of the second rectangular tubular body (A2). The second outward bending ridgeline (10b) interposed in the middle is bent so as to be bent into a mountain shape.

The lower end portion of the corrugated paper (M) is shaped as a mountain-shaped second supporting piece (21), and the supporting piece (21) of the second rectangular tubular body (A2) having a small rectangular cross section. By being buried inside the hollow, a high compressive strength can be given to the second rectangular cylinder (A2).

In that case, as suggested from the assembled state of FIGS. 3 and 4, the apex (z2) of the second projecting piece (21) forming the mountain shape is connected to the second rectangular tubular body (A2). The first corner that intersects the long side (y2) on a line that bisects it so that it can come into line contact from the inside, and that intersects the second rectangular cylinder (A2) in an approximately L shape when viewed from the mouth end surface. On the bisector of the portion where the long side (y1) of the cylindrical body (A1) is exposed, the apex point (z1) of the first V-shaped tensioning piece (20) is also line-contacted from the inside. Positioned to gain. This is because it is possible to give an effective compressive strength to the contact surface of the lid with the product in use.

Reference numeral (22) is a pair of left and right first insertion fixing pieces bent and raised from the above fifth inward bending ridgeline (15), and is performed simultaneously with or separately from the contour punching of the corrugated paper (M). Is cut out. Reference numeral (23) is a first fixing piece receiving port corresponding to both fixing pieces (22), and is punched as a pair of left and right distribution states on the first inward bending ridgeline (11).

As shown in FIG. 3, the first insertion fixing piece (22) and its receiving port (23) are both located at the corners of the first rectangular tubular body (A1) and can be engaged and disengaged from each other. By the locking force, the assembled state of the first rectangular cylinder (A1) is fixed and held.

Further, (24) is a pair of left and right bent and raised from the mutual band of the fifth and ninth inward bending ridgelines (15) and (19) in the opposite direction to the first insertion fixing piece (22). It is a second insertion fixing piece, which is also cut out at the same time as the contour punching of the corrugated cardboard (M) or separately. Reference numeral (25) is a second fixing piece receiving port corresponding to both fixing pieces (24), and is punched as a pair of left and right distribution states on the sixth inward bending ridgeline (16).

As shown in FIG. 3, the second insertion fixing piece (24) and the receiving port (25) thereof are both located at the corner portion of the second rectangular tubular body (A2), and their phases are also the same. The second prismatic body (A2) is fixedly maintained by being engaged with and disengaged from each other.

The number of the first and second insertion fixing pieces (22) and (24) and the receiving ports (23) and (25) to be installed should be increased more than shown in the figure as long as they are arranged in the left and right distribution states. You can

(26) is a corrugated paper (L1) as a constant band width (L1) that does not reach from the extension line of the fourth inward bending ridgeline (14) to the extension line of the fifth inward bending ridgeline (15). M) is a pair of left and right first insertion cover pieces that are continuously and integrally projected from the left and right lateral directions, and the constant band width (L1) is the same as the long side (y2) of the second rectangular tubular body (A2). They are almost equally sized.

Reference numeral (27) is a pair of left and right second insertion cover pieces arranged in parallel with the first insertion cover piece (26), and is also a fifth and ninth inward folding ridgeline (15) (in corrugated paper (M)). 19) Overlapping from the mutual zone in the left-right lateral direction continuously and integrally, and the constant zone width (L2) is dimensioned to be almost equal to the long side (y1) of the first rectangular cylinder (A1). At the same time, a space (w) having a size substantially equal to the short side (x) of the first and second rectangular tubular bodies (A1) and (A2) is provided between the upper and lower adjacent sides of the first insertion cover piece (26). ) Is maintained.

Since (28), (29), (30) and (31) fold each of the first and second insertion cover pieces (26) and (27) into an L-shape, they project from the corrugated paper (M). It is a parallel inward bending ridgeline that is engraved at the base end part and in the middle part, and is a bending ridgeline that assembles the first and second rectangular tubular bodies (A1) (A2) into a rectangular cross section ( 10a), (10b), (11) to (19), which extend perpendicularly to the vertical direction of FIG.

At this time, the base end inward bending ridges (28) (30) of the first and second insertion cover pieces (26) (27) and the midway part inward bending ridges (29) (31) are mutually connected. The band is dimensioned approximately the same as the short side (x) of the first and second rectangular tubular bodies (A1) and (A2).

Similarly, the mutual band between the inwardly bent ridgelines (29) and (31) of the midway portion and the protruding tip edges of the first and second insertion cover pieces (26) and (27) is also the first and second rectangular tubular bodies ( It is dimensioned almost the same as the short side (x) of A1) (A2), but it is dimensioned to be vastly larger than the short side (x) of the first and second rectangular tubular bodies (A1) (A2). By doing so, the insertion amount of each of the first and second rectangular tubular bodies (A1) and (A2) with respect to each of the wood mouth surfaces may be deepened to enhance the locking force thereof.

The mutual bands of the first and second inward folding ridgelines (11) and (12) on the corrugated paper (M) form the short sides (x) of the first and second rectangular tubular bodies (A1) and (A2). As described above, the second insertion cover piece (27) is received at a position deviated from the first inward folding ridgeline (11) to the upper side of the corrugated paper (M) by a certain amount. A pair of left and right receiving recesses (32) is also bent at a position offset from the second inward bending ridgeline (12) to the lower side of the corrugated paper (M) by a certain amount. The left and right pair of the second receiving notches (33) for receiving the () are cut from the both left and right edges of the corrugated paper (M) by a certain depth.

In addition, the above-mentioned constant deviation amounts are equal to each other, and each of them is dimensioned substantially the same as the short side (x) of the first and second rectangular cylinders (A1) (A2), whereby the first corner is formed. When the cylindrical body (A1) is assembled into a large rectangular cross section, the first and second receiving notches (32) (33) face each other correctly so that the second inserting cover piece (27) is crossed at the same time. Ready to accept.

Further, (34) is also a third receiving notch for receiving the second insert cover piece (27), which is a left and right pair located on the seventh inward bending ridgeline (17), After all, it is cut to a certain depth from both left and right edges of corrugated paper (M).

Then, the first and second rectangular tubular bodies (A1) and (A2) assembled in the rectangular cross section are continuously bent and bent inward at right angles to be assembled into a unit having an overall L-shaped cross section. Of the first to third receiving notches (32) to (34), which are in proper alignment with the third receiving notch (34) when directly aligned with the second receiving notch (33). Securely receive the second insert cover piece (27) inside.

That is, as apparent from FIG. 4, the second insertion cover piece (27) is inserted and locked in a state of straddling both the mouths of the first and second rectangular tubular bodies (A1) and (A2). By doing so, the unit having an overall L-shaped cross section in the first and second rectangular tubular bodies (A1) and (A2) can be assembled and fixed without fear of deformation or bending back. is there.

On the other hand, the first insert cover piece (26) has a second insert cover with a constant interval (w) having substantially the same size as the short side (x) of the first and second rectangular cylinders (A1) and (A2). Since it is separated from the piece (27), it is inserted and locked into the wood mouth surface of the first rectangular cylinder (A1) assembled into a large rectangular cross section without interfering with the second insertion cover piece (27). In addition, the first and second rectangular tubular bodies (A1) and (A2) are completely covered with the first and second insertion cover pieces (26) and (27).

(35) has a length reaching the second receiving notch (33) from the upper edge of the corrugated cardboard (M), and a pair of left and right cut out along the left and right edges of the corrugated cardboard (M). The first side relief notch, (36) is the length from the lower edge of the corrugated cardboard (M) to reach the third receiving notch (34). These are a pair of left and right second side relief cutouts, both of which are formed by allowing the first and second insertion cover pieces (26) (27) to escape, so that the first and second rectangular tubular bodies (A1) (A2 ) And the first and second insertion cover pieces (26) and (27) are leveled. The amount of the first and second side relief notches (35, 36) cut out is approximately equal to the thickness dimension of the corrugated paperboard (M).

Further, (37) is a pair of left and right located on the first outward-folded ridgeline (10a) of the corrugated paper (M), and is cut at a certain depth from both left and right edges of the corrugated paper (M). As shown in FIG. 4, the first relief piece (20), which is a first relief groove and is bent in a V shape from the first outward bending ridgeline (10a), is the first insertion cover piece ( 26) to prevent interference with the first rectangular cylinder (A1) and facilitate the insertion of the first insertion cover piece (26) into the first rectangular cylinder (A1).

(38) is also a pair of left and right positioned on the second outward-folded ridgeline (10b) of the corrugated paper (M), and is also cut to a certain depth from both left and right edges of the corrugated paper (M). As shown in FIG. 4, the second relief groove is a second protrusion piece (21) bent in a mountain shape from the second outward bending ridgeline (10b), and the second insertion cover piece (27). ) To interfere with.

Next, (39) is engraved along the vertical and vertical directions of the corrugated paper (M) so as to be orthogonal to the above-mentioned plural folded ridges (10a) (10b) (11) to (19). It is an inwardly bent ridge line, and in the illustrated embodiment, it is arranged on the left and right bisectors (O-O) of the corrugated cardboard paper (M). It does not matter if the marking is made at a position eccentric to the left or right of the corrugated paper (M).

Reference numeral (40) shows a pair of left and right imaginary lines parallel to the half-folded ridgeline (39), which is almost the same as the short side (x) of the first and second rectangular tubular bodies (A1) and (A2). It is separated from the left and right bisectors (O-O) in a reciprocal direction by a constant distance (d).

(41) is located in the mutual band between the upper edge of the corrugated paper (M) and the first inwardly bent ridgeline (11), and is divided from the left and right bisectors (O-O) to the virtual line (40). ) Is a pair of left and right first center relief notches that are notched to the depth that reaches the position), and the intersection has the shape of a V-shaped notch located on the first outward bending ridgeline (10a). .

Further, (42) is located in the band from the first inward bending ridgeline (11) to the fourth inward bending ridgeline (14), and is also virtual from the left and right bisectors (O-O). The depth reaching the line (40) is a pair of left and right second center relief notches that are continuously cut with the first center relief notch (41), and has a substantially isosceles trapezoidal notch shape. is doing.

However, only in the mutual band portion of the third and fourth inwardly bent ridgelines (13) and (14), one of the left and right sides of the second center escape notch (42) is not cut out. It is left as the first inserting tongue (42f) to the other, and the first inserting tongue (42f) reaches the above left / right bisector (O-O).

In other words, the pair of left and right first rectangular cylinders (A1) has a semi-folded ridgeline (only in the mutual zone of the fourth and fifth inwardly bent ridgelines (14) and (15) forming the long side (y1). 39), the short sides (x) of the first rectangular tubular body (A1) are in contact with each other when being bent at an inward right angle from the half-folded ridgeline (39). While interlocking with each other via (42f), the wood entrance surfaces provided with the first and second center relief notches (41) and (42) abut on the left and right bisectors (O-O). It is like this.

On the other hand, (43) is located in the band from the lower edge of the corrugated paper (M) to the eighth inward bending ridgeline (18), and is cut as a depth to further recede from the imaginary line (40). The pair of left and right third center relief cutouts is a pair of left and right third center relief cutouts. The second center relief cutout (42) has a reverse isosceles trapezoidal shape.

However, only in the mutual band portion of the seventh and eighth inward bending ridgelines (17) and (18), one of the left and right sides of the third center escape notch (43) is the imaginary line (40). The second plug-in tongue (43f) is not notched as the depth to recede from, but is left as the second plug-in tongue (43f) to the other, and the second plug-in tongue (43f) reaches the imaginary line (40).

(44) is located in the mutual zone of the 8th and 9th inward bending ridgelines (18) and (19), and is paired with the third center escape notch (43) to form a left and right pair. The fourth center escape notches, all of which recede in parallel from the virtual line (40).

Further, (45) is located in the mutual zone of the fifth and ninth inwardly bent ridgelines (15) and (19), and is continuous from the fourth center escape notch (44), and is divided into left and right bisectors. (O-O) A pair of left and right fifth center relief notches cut out to above, and the notch shape forms an inclined straight line connecting the fifth and ninth inward bending ridgelines (15) and (19).

However, one of the left and right sides is not cut out from the left and right bisector (OO) at all, and is left as a third insertion tongue piece (45r) to the other side. Moreover, the third insertion tongue piece (45r) is present on the opposite side of the second insertion tongue piece (43f).

That is, if the second insertion tongue (43f) exists on the left side of the left and right bisectors (O-O) as a boundary, as shown in FIG. 2, the third insertion tongue (45r). Is placed on the opposite right side, so that when the pair of left and right second rectangular cylinders (A2) are bent inward at a right angle from the half-fold ridge line (39), the second rectangular cylinders (A2). The two knuckles face each other so that they can be quickly and surely inserted and locked through the second and third insertion tongue pieces (43f) (45r).

Furthermore, in comparison with the second insertion tongue piece (43f) located on the imaginary line (40), the third insertion tongue piece (45r) is located on the left and right bisectors (O-O). When the second pair of right and left second rectangular cylinders (A2) are bent inward at a right angle from the semi-folding ridgeline (39) on the left and right bisectors (O-O), the third insertion The tongue piece (45r) is inserted earlier, and then the second insertion tongue piece (43f) is inserted under that state. As a result, the bending work from the half-folded ridgeline (39) can be carried out lightly, and it is stable and robust even in the assembled state of V-shape in plan view and bottom view.

In assembling the cushioning material having the above structure, the upper side of the corrugated paper (M) in FIG. 2 is bent into a V shape from the first outwardly bending ridgeline (10a), and as shown in FIG. A first tension piece (20) is formed on the upper end of the corrugated paper (M).

Then, the first inward folding ridgeline (11) is sharply bent in the opposite inward direction, and subsequently, the H-shaped first tension piece (20) is wrapped under the corrugated paper (M) so as to wrap it. Toward the side, it is sequentially bent inward at right angles from the second to fourth inward bending ridgelines (12) to (14), and the first rectangular tubular body (see FIG. Assemble to A1).

Then, the first insert cover piece (26) is sequentially bent inward at a right angle from the base end inward bending ridgeline (28) and the midway part inward bending ridgeline (29) to form an L-shape. While shaping, from the tip portion to the mouth end surface of the first rectangular tubular body (A1), especially the long letter (y1) of the first rectangular tubular body (A1) and the first lettering piece (20) on the long side (y1) As shown in FIG. 4, the mold is affixed to and interlocked with the apex (z1) of the mold, and the assembled state of the first rectangular cylinder (A1) is fixed so as not to lose its shape.

Needless to say, the assembly of the first rectangular cylinder (A1) is performed for each of the left and right pair.

On the other hand, the lower side of the corrugated cardboard (M) is bent in a mountain shape from the second outwardly bent ridgeline (10b), and the second projecting piece is attached to the lower end of the corrugated cardboard (M) as shown in FIG. (21) is molded.

Then, sharply bend in the opposite direction from the sixth inward bending ridgeline (16), and then wrap the corrugated paper (M) so as to wrap around the above-mentioned mountain-shaped second bracing piece (21). This is bent upward inward from the seventh to ninth inward bending ridgelines (17) to (19) inwardly at a right angle, and the second rectangular tubular body (A2 having a small rectangular cross section as shown in FIGS. ) To assemble.

Thereafter, as shown in FIG. 8, the corrugated paperboard (M) is bent inward from the fifth inward bending ridgeline (15) at an inward right angle so as to be half-folded, and then the first of the large rectangular cross section is formed. The second rectangular cylinder (A2) having a small rectangular cross section is stacked on the rectangular cylinder (A1) to be assembled into a unit having an overall L-shaped cross section.

Then, as is apparent from FIG. 4, the first and second receiving notches (32) and (33) that are opened corresponding to the long sides (y1) facing each other of the first rectangular tubular body (A1) and the second receiving notches (32) and (33). Since the third receiving notch (34) opening on the short side (x) of the rectangular tubular body (A2) is in a mating communication state in which the third receiving notch (34) is properly aligned in a straight line when viewed from the wood mouth surface, finally the first to 3 Into the receiving notches (32) to (34), insert a second insertion cover piece (27) shaped like an L-shape like the first insertion cover piece (26) into its tip as shown in FIG. It is inserted and locked.

At this time, the tip of the second insertion cover piece (27) is the long side (y2) of the second rectangular tubular body (A2) and the peak-shaped apex (z2) of the second bracing piece (21). As a matter of course, the second insertion cover piece (27) is straddled over the both mouths of the first and second rectangular tubular bodies (A1) and (A2) as shown in FIG. As a result, the assembled state, which is composed of both of them and intersects as a unit having an L-shaped cross section as shown in FIG. 10, is stably and reliably fixed and maintained without fear of deformation or bending back. .

As a matter of course, the assembly of the second rectangular cylinder (A2) itself and the assembling unit with the first rectangular cylinder (A1) are performed for each of the left and right pair. It should be noted that the first insertion cover piece (26) may be inserted and locked after the second insertion cover piece (27) is inserted and locked.

Then, when viewed from the above-described mouth end surface, the left and right pairs of the first and second rectangular cylinders (A1) and (A2) assembled in a unit having an overall L-shaped cross section are continuously folded as described above. From the half-fold ridgeline (39) orthogonal to the bending direction (horizontal direction), it can be bent inward at a right angle.

That is, since the first to fifth center relief notches (41) to (45) are provided along the vertical direction in the center of the corrugated paper (M), the first and second corners are formed. The left and right pairs of the cylinders (A1) and (A2) can be separately assembled into a rectangular section, and they can also be assembled into a unit having an overall L-shaped section when viewed from the mouth end. However, at the completion of the assembly up to that point, as shown in FIG. 11, a pair of left and right units is formed by the first corner formed by the mutual zones of the above-mentioned fourth and fifth inward folding ridgelines (14) and (15) of the corrugated paper (M). The long side (y1) of the tubular body (A1) is defined as a half-folded ridgeline (39), and only this portion is connected.

Therefore, the unit of the first and second rectangular cylinders (A1) and (A2) is bent from the half-folded ridgeline (39) at an inward right angle at which the mating faces face each other as shown in FIG. , Then, the first insertion tongue (42f) that reaches on the other left-right bisector (O-O) so as to face either the left or right second center escape notch (42) in the unit. However, as shown in FIGS. 13 and 14, the unit is inserted and locked into the particularly first rectangular cylinder (A1) of the unit through the second center relief notch (42).

Also, as shown in FIGS. 13 and 14, the third insertion tongue piece (45r) that reaches the left or right bisector (O-O) of the right or left side of the unit is also opposite to the other. Through the third center escape notch (43) of the unit, the unit is inserted and locked in the second square tubular body (A2) of the unit. In that case, the third insertion tongue piece (45 r) enters between the skirt portion of the chevron-shaped strut piece (21) wrapped in the second prismatic body (A2) and the long side with which it contacts. .

Further, after the first inserting tongue piece (42f) and the third inserting tongue piece (45r) are inserted and locked, they face either the left or right fifth center escape notch (45) of the unit. As described above, the third inserting tongue (45r) reaching the other left and right bisectors (O-O) has its fifth center escape notch (45), as also apparent from FIGS. After that, the unit is inserted and locked in the especially second prismatic cylindrical body (A2).

The fifth insertion tongue piece (45r) includes the apex (z2) of the mountain-shaped bracing piece (21) wrapped in the second prismatic body (A2), and the long side (y2) with which it abuts. Invade each other.

As a result, the cushioning material of the present invention is finally finished from a single piece of corrugated cardboard paper (M) into a V-shape in flat / bottom view as shown in FIG. 1. The product (C) can be safely protected by inserting it into the corners of the outer packaging box (B).

In particular, in the illustrated embodiment, two intersecting sides having an L-shaped cross-section that are assembled from the first and second rectangular tubular bodies (A1) and (A2) are connected to the first rectangular tubular body (A1). ), The dimensions corresponding to the long side (y1) are set to have the same relation to each other, but a difference in length may be given to the length dimensions of the two sides.

In any case, since the cushioning material of the present invention has a V-shape in a flat / bottom view, it can be fitted to the corners of the outer box (B) and, of course, the cross section L when viewed from the mouth side. Since it has a character-shaped unit, it can be fitted not only to the standing side wall surface of the outer box (B) but also to the top wall surface or the bottom wall surface intersecting with it, which is extremely effective for protecting the article (C). It is fruitful.

It is also possible to bend and restore the cushioning material to the expanded state by performing an operation in the opposite direction to the above assembling order, which is saved as the single corrugated cardboard paper (M). It goes without saying that they can be stacked and stored in space.

[0073]

[Effect of device]

 As described above, in the assembling type cushioning material for packing according to the present invention, a single corrugated cardboard paper (M) having a square or rectangular contour shape is provided with a plurality of folding ridge lines parallel to any one side thereof. (10a) (10b) (11) (12) (13) (14) (15) (16) (17) (18) (19) and its bent ridgelines (10a) (10b) (11)- One folding ridgeline (39) orthogonal to (19) is imprinted, and one folding ridgeline (10a) located on one end side of the corrugated cardboard (M) is cut into one end of the corrugated cardboard (M). The part is bent into a letter V shape to form a first supporting piece (20), and the first supporting piece (20) continues to the other end side of the corrugated board paper (M). In order from the bent ridgelines (11) to (14) By going inwardly bent at a right angle, while the assembled first corner cylinder of larger cross-section rectangle encompassing the first bracing piece (20) (A1),

From one folding ridge line (10b) located on the other end side of the corrugated cardboard (M), the other end of the corrugated cardboard (M) is bent into a mountain shape to form a second projecting piece (21). Then, from the second tension piece (21) toward the opposite one end side of the corrugated paperboard (M), the corrugated paperboard (M) is left in order from several folding ridge lines (16) to (19). By assembling into the second rectangular tubular body (A2) having a small rectangular cross-section that encloses the second tension piece (21) by bending at right angles to each other, the first and second rectangular tubular bodies (A1) (A2) are assembled. ) Is separated from the short side (x) by a constant distance (w) having substantially the same dimension, and the constant distance (w) is continuously closed so that the first rectangular cylinder (A1) is positioned at the corner portion. Inside from the bent ridgeline (15) After being assembled into an L-shaped unit having an overall cross section that intersects with the second rectangular tubular body (A2) by bending and bending at right angles to the direction, the unit having an L-shaped cross section is attached to one unit that is orthogonal to the bending direction. By folding inward at a right angle from the folding ridgeline (39), the structure is finished in a V-shape in flat / bottom view, but is composed of a single piece of corrugated cardboard paper (M). With the two strut pieces (20) and (21), it is possible to exert high strength against the compressive force from the outside and effective cushioning properties, and in mass production compared to conventional foamed plastic products. Also, it is remarkably excellent in recycling.

Since it is made of a single piece of corrugated cardboard paper (M), it can be stocked and stored in a large amount by stacking it under the flattened state, and it is also excellent in space saving. It can be assembled and used very easily by simply bending it continuously from the unfolded state.

Particularly, in the assembled state of the cushioning material, the first and second rectangular tubular bodies (A1) and (A2) form a unit having an L-shaped cross section when viewed from the mouth end surface, and the unit is flat and bottom-viewed. Since it has a V-shape, it can be used by inserting it into the corner of the outer box (B) in a state of contacting not only the standing side wall surface but also the top wall surface or the bottom wall surface. There is an effect that (C) can be protected safely. By continuously bending a piece of corrugated cardboard (M), it is possible to obtain an assembled state that is rich in compressive strength and cushioning effect, although it can be easily assembled.

In that case, if the configuration of claim 2 is adopted, the corner portion is provided with uniform reinforcement and cushioning effect without being restricted by the directionality in use in insertion into the exterior box (B). It is very convenient to handle.

If the configuration of claim 3 is adopted, there is an effect that the finished state of the V-shaped cushioning material can be stably fixed and held without fear of its shape being deformed or bent back.

If the configuration of claim 4 is adopted, there is an effect that each of the first and second rectangular tubular bodies (A1) and (A2) can be maintained stable and firmly in the assembled state having the rectangular section. It is possible to prevent the possibility of deformation and bending back.

Further, if the structure of claim 5 is adopted, the unit assembled from the first and the second rectangular tubular bodies (A1) and (A2) in an L-shaped cross section is still in danger of being deformed or bent back. There is an effect that it can be fixed and held.

[Brief description of drawings]

FIG. 1 is a perspective view showing a finished state of a cushioning material according to the present invention.

FIG. 2 is a plan view showing a developed state of FIG.

FIG. 3 is an enlarged sectional view taken along line 3-3 of FIG.

FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG.

FIG. 5 is a perspective view showing a bending operation process from FIG. 2 to first and second rectangular cylinders.

FIG. 6 is a perspective view showing a bending action process of a rectangular cross section subsequent to FIG. 5;

FIG. 7 is a partial perspective view seen from a direction different from FIG.

8 is a perspective view showing a bending operation process of the unit having an L-shaped cross section, following FIG.

FIG. 9 is a perspective view showing the insertion locking operation process of the insertion cover piece continued from FIG. 8;

10 is a perspective view showing a state in which insertion of the insertion cover piece is completed, following FIG.

FIG. 11 is an overall perspective view showing a pair of L-shaped cross-section units.

FIG. 12 is a perspective view showing a half-folding operation process from FIG. 11 into a V-shape.

13 is a partially enlarged plan view of FIG.

14 is a sectional view taken along line 14-14 of FIG.

FIG. 15 is a schematic vertical sectional view showing a usage state of the present invention.

[Explanation of symbols]

 (10a) -First outward-folding ridgeline (10b) -Second outward-folding ridgeline (11) -First inward-folding ridgeline (12) -Second inward-folding ridgeline (13) -Third inward-folding ridgeline (14) -Fourth inward bending ridgeline (15) Fifth inward bending ridgeline (16) -Sixth inward bending ridgeline (17) -Seventh inward bending ridgeline (18) -Eighth inward bending ridgeline ( 19) 9th inward bending ridge (20) 1st tension piece (21) 2nd tension piece (22) 1st insertion fixing piece (23) 1st fixing piece receiving port (24) 2nd Insertion fixing piece (25), second fixing piece receiving port (26), first insertion cover piece (27), second insertion cover piece (39), inwardly bent ridgeline (half-folded ridgeline) (41), first Center escape notch ( 42) · Second center relief notch (42f) · First insertion tongue (43) · Third center relief notch (43f) · Second insertion tongue (44) · Fourth center relief notch (45) · Fifth Center relief notch (45r), third insertion tongue (A1), first square cylinder (A2), second square cylinder (M), corrugated paperboard (d), constant interval (w), constant interval (x ) ・ Short side (y1) ・ Long side (y2) ・ Long side (OO) ・ Left and right bisector

Claims (5)

[Scope of utility model registration request] 1. A single corrugated cardboard paper (M) having a square or rectangular contour shape, and a plurality of folding ridge lines (10a) (10b) (11) (1) parallel to an arbitrary side thereof.
2) (13) (14) (15) (16) (17) (1
8) (19) and its bent ridgelines (10a) (10
b) A single folded ridgeline (39) orthogonal to (11) to (19) is imprinted, and the corrugated cardboard is obtained from the one folded ridgeline (10a) located at one end side of the corrugated paper (M). By bending one end of the paper (M) into a V-shape, the first tension piece (2
0), and from the first tension piece (20) toward the other end side of the corrugated paperboard (M), the corrugated paperboard (M) is sequentially indented from some remaining ridge lines (11) to (14). By folding at a right angle to the direction, the first strut piece (20) is assembled into a first rectangular tubular body (A1) having a large rectangular cross-section that encloses the first strut piece (20), while one is located on the other end side of the corrugated paper (M). The second tension piece (21) by bending the other end of the corrugated paperboard (M) from the bent ridgeline (10b) of FIG.
Then, from the second tension piece (21) toward the opposite one end side of the corrugated paperboard (M), the corrugated paperboard (M)
Are sequentially bent inward at right angles from the remaining remaining bending ridgelines (16) to (19) to form a second rectangular tubular body (A2) having a small rectangular cross section that encloses the second bracing piece (21). Assembling and separating the first and second rectangular cylinders (A1) and (A2) by a constant distance (w) having substantially the same size as the short side (x), and closing the constant distance (w) continuously. , Above first
By bending and raising the rectangular tubular body (A1) inwardly at a right angle from the bending ridgeline (15) located at the corner portion,
After assembling into an overall unit having an L-shaped cross section that intersects with the rectangular tubular body (A2), the unit having an L-shaped cross section is formed at a right angle inward from one bending ridgeline (39) orthogonal to the bending direction. Assembled cushioning material for packaging, which is finished in a V shape when viewed flat and bottom by folding. 2. A plurality of bent ridgelines (10a) (10b) for assembling first and second rectangular tubular bodies (A1) (A2).
One bent ridgeline (3
9) is stamped on the bisector (O-O) of the corrugated cardboard paper (M), and the cross section L of the first and second rectangular tubular bodies (A1) and (A2).
2. The prefabricated cushioning material for packing according to claim 1, wherein the character-shaped unit is defined to be half-folded from the folding ridgeline (39). 3. A plurality of bent ridgelines (10a) (10b) for assembling first and second rectangular tubular bodies (A1) (A2).
One bent ridgeline (3
9) is stamped on the bisector (O-O) of the corrugated paper (M), and a plurality of center escape notches (41) to (45) are provided on the bisector (O-O). And insert tongue (42
f) (43f) and (45r) are provided, and the overall V in a plan view and bottom view from the bent ridgeline (39).
2. An L-shaped cross-section unit to be finished in a V shape is fixedly held by the insertion locking force of the insertion tongues (42f) (43f) (45r).
Assembled cushioning material for packaging as described. 4. A first and a second rectangular cylinder (A1) (A having a rectangular cross section).
Insert the fixing pieces (22) (24) into the corners of 2).
And the receiving ports (23) and (25) are formed correspondingly,
Due to the mutual locking force, the first and second rectangular cylinders (A1)
The assembled cushioning material for packing according to claim 1, wherein the assembled state of (A2) is fixedly held. 5. A constant band width (L1) substantially equal to the total size of the short side (x) of the first rectangular cylinder (A1) and the long side (y2) of the second rectangular cylinder (A2). A pair of facing insertion cover pieces (27) is continuously and integrally projected from the other side of the corrugated paper (M), and the first and second corners are provided at the protruding base end and the middle of each insertion cover piece (27). Bending ridgelines (10a) (10) for assembling the tubular bodies (A1) (A2) into a rectangular cross section.
b) (11) (12) (13) (14) (15) (1
6) Two bent ridgelines (30) and (31) orthogonal to (17), (18) and (19) are engraved, and L-shapes are bent inward from the bent ridgelines (30) and (31) respectively. First and second rectangular tubular bodies (A1) and (A2) that intersect the insertion cover piece (27) of FIG.
2. The packaging according to claim 1, wherein the assembled state of the first and second rectangular tubular bodies (A1) and (A2) is fixed and maintained by inserting and locking the two wooden mouths in a straddling state. Assembled cushioning material.