JP2013067077A - Transportation assist tool and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transportation assist tool that more surely prevents the displacement of a label, and a method for manufacturing the same.SOLUTION: A box-shaped container 1 is formed in the following manner. A label 11 in which prescribed information is printed on the surface is placed on a molding surface, which molds the outer surface of a long-side sidewall 8, of a mold device 21 for molding the box-shaped container 1. The label 11 is suckingly held by a suction device via a slit 26 formed into a frame shape on the molding surface, and then, a molten resin is filled into a cavity 25 and solidified, thereby forming the box-shaped container. When the box-shaped container 1 is molded, the label 11 is placed so that its outer-peripheral side part protrudes from the slit 26 to the outer peripheral side by about 2.0 mm.

Description

  The present invention relates to a transport aid such as a box-type container or a pallet used for transporting an article and a method for manufacturing the same.

  Conventionally, a transport aid such as a box-shaped container or a pallet is used when a plurality of articles are collected together or an article whose posture is difficult to be stabilized or a fragile article is transported in a stable state. In addition, when predetermined information (company name, product name, etc.) is attached to such a transportation aid, the predetermined information is printed on the surface of the cavity of the mold apparatus for molding the transportation aid. There is a technique in which a display surface with the predetermined information is formed at the same time as the transport aid by filling and solidifying a molten thermoplastic resin after installing the label (in-mold label) .

  By the way, when the molten resin is filled in the cavity, the molten resin injected into the cavity strikes the edge of the label vigorously, so that the label is bent, the label is displaced, or the label is wrinkled. It may occur.

  On the other hand, the molten resin injected into the cavity first hits the surface of the label on the inner peripheral side of the outer peripheral edge, and then spreads to the outer peripheral edge of the label along the surface of the label. There is a technology (for example, see Patent Documents 1 and 2).

  More specifically, in Patent Document 1, among the cavities, a molding part of the side wall part where the label is installed (hereinafter, “side wall molding part”) and a molding part of the bottom wall part where the gate is provided (hereinafter, "Bottom wall molding part") intersects with a substantially T-shaped cross section, and the label faces the end of the bottom wall molding part and is placed so as to straddle the bottom wall molding part. In this case, the label is pressed against the molding surface of the side wall molding part by the molten resin flowing from the bottom wall molding part to the side wall molding part, and the molten resin flowing through the cavity is vigorously moved from the front side against the edge of the label. Collision can be avoided, and the above-mentioned problems such as label curling can be suppressed.

  Further, Patent Document 2 discloses a technique of providing a groove (a rectifying channel and a leading hot water channel) for guiding the molten resin injected into the cavity to a surface portion on the inner peripheral side with respect to the outer peripheral edge of the label. ing. Even with the technique of forming the groove portion, it is possible to suppress the curling of the label and the like in the same manner as in Patent Document 1.

JP-A-8-132477 Japanese Patent Publication No.43-3986

  However, when the side wall molded part and the bottom wall molded part are configured so as not to cross each other in a substantially T-shaped cross section, the display surface on which the predetermined information is displayed is located above the bottom wall part in the side wall part. In the case where it is desired to be configured so as to exist only in the case, it is impossible to install the label so as to straddle the bottom wall forming portion as in Patent Document 1 above.

  Moreover, when the said groove part is formed like the said patent document 2, the convex part which made the said groove part the shaping | molding surface in a conveyance assistance tool will be formed although it is unnecessary. Then, due to this, there is a risk of causing various problems such as a decrease in functionality of the transport aid (for example, the bottom surface and the inner surface defining the storage space of the box-shaped container are uneven). In addition, Patent Document 1 discloses a technique for suppressing the curling of the label by increasing the width of the end portion of the bottom wall molding portion to reduce the inflow speed of the molten resin into the side wall molding portion. However, even when the technology is adopted, there is a concern that the thickness of the transport aid becomes unnecessarily thick at the widened portion, and various problems such as molding distortion (sink) are caused.

  The present invention has been made in order to solve the above-described problems and the like, and an object of the present invention is to provide a transport aid that can more reliably prevent the displacement of the label and a method for manufacturing the transport aid. is there.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to a corresponding means are added as needed.

Means 1. A method for manufacturing a transport aid having a placement portion on which an article can be placed and having a display surface for displaying predetermined information,
A mold apparatus having a plurality of molds for forming a cavity for molding the transport aid, an injection apparatus for injecting a molten thermoplastic resin into the cavity, and air in the cavity can be sucked Using a suction device,
Of the molding surface of the mold that defines the cavity, an installation step of installing a label so as to be in close contact with the molding surface of the mold, with respect to a portion that is to mold the display surface;
By filling with the molten resin to the cavity where the label is installed, and through a filling and solidifying step of solidifying,
A transportation aid having the above-described placement portion and having the display surface on which the predetermined information is displayed by the label is integrally formed,
In the mold, a gate for introducing the molten resin supplied from the injection device into the cavity is formed on the molding surface that defines the cavity, and the mold for molding the display surface includes: A slit is formed to allow the air in the cavity to be sucked by the suction device by communicating the cavity and the suction device,
In the installation step, the label is installed such that a portion of the label on the gate side protrudes to the gate side across the slit, and a protruding length from the slit is 1.0 mm or more, 5 A method for manufacturing a transport aid, characterized in that the thickness is 0.0 mm or less.

  According to the means 1, the part on the gate side of the label is installed so as to protrude by 1.0 mm to 5.0 mm on the gate side across the slit. Accordingly, at least a portion on the gate side of the label can be reliably held by the suction force of the suction device, and a holding force can be sufficiently exerted on at least the outer edge portion of the label on the gate side. Therefore, even if the molten resin flowing into the cavity from the gate hits the outer edge of the label on the gate side, the label can be kept in close contact with the molding surface of the mold, and the label can be lifted and misaligned. , Soot generation can be prevented.

  In addition, when the protruding length from the slit of the label exceeds 5.0 mm, the holding force by suction of the suction device becomes difficult to the outer edge portion of the label which protrudes, and the molten resin does not reach the outer edge portion. If it hits vigorously, the outer edge of the label may rise, and there is a risk of incurring problems such as the molten resin entering between the label and the molding surface of the mold. On the other hand, when the protruding length of the label from the slit is less than 1.0 mm, the label is favorably adsorbed due to a part of the label sucked into the slit being slightly pulled toward the slit. This is not preferable because a gap may be formed between the peripheral edge of the slit of the molding surface and the label, and air may flow into the slit from there.

  Note that “the portion of the outer edge portion of the label on the gate side” means “when the gate and the installed label are developed on the same plane, two of the outer edge portion of the label, the gate and the label. The meaning of “a part on the gate side between the contacts of the common outer tangent line” is included. In addition, “predetermined information” refers to information related to the goods transported by the transport aid (name of the company that manufactures and sells the goods, product name of the goods, etc.), and information related to transportation (the name of the company that transports the goods) Etc.), information related to transportation aids (company name, product name, etc. of the manufacturer and distributor of transportation aids) and information displayed by printing on the label surface such as illustrations that improve design Not only that, but also information that can be recognized by the shape and installation position of the label (such as being able to grasp the direction of the transportation aid) is included.

Mean 2. The gate is formed in a mold for molding the lower surface of the transport aid,
The display surface is formed on a side surface of the transport aid,
The label comprises a pair of left and right vertical sides extending substantially vertically along the side surface of the transport aid,
The slit is formed in a substantially U shape or a substantially B shape corresponding to at least the lower side portion and the left and right vertical side portions of the label,
In the installation step, the label is installed so that the lower part and the left and right side parts of the label protrude across the slit to the outer peripheral side of the slit, and the protruding length from the slit is 1.0 mm or more. The method for manufacturing a transport aid according to the means 1, characterized in that it is 5.0 mm or less.

  According to the means 2, in the configuration in which the label includes a pair of left and right vertical sides extending substantially vertically along the side surface of the transport aid, the label is more reliably secured during the filling / solidifying process of the manufacture of the transport aid. Can be held. In addition, it is possible to more reliably prevent the molten resin from entering between the label and the molding surface of the mold. In addition, since the label is held more reliably, the filling rate of the molten resin into the cavity can be increased. In this case, productivity can be improved.

  In addition, as a shape of a label provided with the said vertical side part, a rectangle and a square are mentioned, However, It is not restricted to these, A lower side part and an upper side part may be curved or bent (square). It does not have to be a shape).

Means 3. The label is constituted by a transparent or translucent see-through portion, at least a part of the portion displaced by 1.0 mm to 5.0 mm from the outer periphery to the inner periphery.
The method for manufacturing a transport aid according to means 1 or 2, wherein the slit is visible through the see-through portion in the installation step.

  According to the means 3, the position of the slit can be confirmed through the label in the fluoroscopic part. For this reason, in an installation process, it can be grasped comparatively easily whether the slit is relatively arranged in the desired position displaced about 1.0 mm to 5.0 mm from the outer edge of the label to the inner peripheral side. . Therefore, the label and the slit can be more accurately arranged relative to each other while improving workability. Furthermore, it is not necessary to turn the label in order to confirm the position of the slit again from the state where the slit and the label overlap with each other, and it is possible to avoid a situation where the label is deformed.

Means 4. The see-through part is formed along the outer periphery of the label,
In the installation step, the label is installed so that a boundary portion between the see-through portion and the other general portion coincides with the slit. .

  According to the means 4, since the see-through part is formed along the outer peripheral edge of the label, the effect of the means 3 is more reliably achieved. The label is installed so that the boundary between the see-through portion and the general portion coincides with the slit. That is, since the boundary part between the fluoroscopic part and the general part serves as a mark for a suitable installation position of the label, the label can be installed more accurately. Furthermore, about the site | part attracted | sucked by the suction device through a slit among labels, there exists a possibility that the trace of a slit may be attached (a protrusion may be formed) resulting from suction. In this respect, as in the present means 4, by aligning the boundary between the see-through portion and the general portion of the label and the slit, the trace of the slit is formed along the boundary portion, and the slit Can be made inconspicuous compared to the case where the mark is formed on other parts of the label.

Means 5. Formed by the manufacturing method according to any one of the above means 1 to 4,
A transportation aid having a placement part on which an article can be placed and having a display surface for displaying predetermined information,
The display surface is formed by insert molding the label on which the predetermined information is printed so that the print surface is exposed,
A portion of the label that is displaced from the outer peripheral edge to the inner peripheral side by about 1.0 mm to 5.0 mm has a mark formed by holding the label by suction when the label is insert-molded. A transport aid characterized by

  When manufacturing the transportation aid described in the means 5, it is possible to improve workability as described in the means 1 and the like. Further, particularly in correspondence with the means 4, the mark of the slit (projection) formed in the label by sucking and holding the label at the time of molding coincides with the boundary portion between the see-through portion and the general portion of the label. Therefore, it is possible to prevent a situation in which the traces of the slits are conspicuous, and it is possible to make the boundary portion between the see-through portion and the general portion of the label more clearly visible and to improve the design.

It is a front view of a box-shaped container. (A) is the sectional view on the AA line of FIG. 1, (b) is an enlarged view which shows the J section of (a). It is a cross-sectional schematic diagram which shows a metal mold apparatus. It is sectional drawing which shows a long side slide type | mold. (A) is sectional drawing which shows a long side slide type | mold etc., (b) is an enlarged view which shows the K section of (a). It is a partial front view which shows a part of molding surface of a long side slide type | mold. (A) It is a rear view which shows the base face side of a nest, (b) is a side view of a nest. It is a rear view of the nesting in another embodiment. The nesting in another embodiment is shown, (a) is a rear view, (b) is a side view. The nesting in another embodiment is shown, (a) is a rear view, (b) is a side view. It is a front view which shows the example of application to a pallet. It is sectional drawing which shows the long side slide type | mold in another embodiment.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1 and FIG. 2, a box-shaped container 1 as a transportation aid includes a substantially rectangular plate-like bottom wall 2 having a pair of opposed long sides and a pair of opposed short sides, A substantially square cylindrical peripheral wall portion 3 extending upward from the outer peripheral edge of the bottom wall portion 2, an upper flange 4 projecting from the upper edge portion of the peripheral wall portion 3 in the outer peripheral direction of the peripheral wall portion 3, and under the peripheral wall portion 3 A lower flange 5 projecting from the position slightly above the lower edge portion in the outer circumferential direction of the peripheral wall portion 3 along the edge portion, and a vertical flange 6 connecting the upper flange 4 and the lower flange 5, These are integrally formed by molding. The box-type container 1 of the present embodiment is made of polypropylene.

  The peripheral wall portion 3 extends upward from each of the long side portions 8 of the bottom wall portion 2 and extends upward from each of the short side portions of the bottom wall portion 2. It is comprised from a pair of short side wall part 9 (refer FIG. 2) which connects between the side edge parts of the side wall part 8. FIG. Further, the peripheral wall portion 3 extends slightly inclined toward the outer peripheral side toward the upper side. In this embodiment, the box-shaped containers 1 are stacked one above the other so that the lower surface of the lower flange 5 of the upper box-shaped container 1 comes into contact with and is supported by the upper surface of the upper flange 4 of the lower box-shaped container 1. At the same time, the bottom wall 2 of the upper box-shaped container 1 is accommodated on the inner peripheral side of the peripheral wall 3 of the lower box-shaped container 1. Thereby, the box-shaped containers 1 can be stacked (stacked) up and down while preventing the positional displacement of the upper box-shaped container 1 in the horizontal direction with respect to the lower box-shaped container 1.

  In the present embodiment, predetermined information (company name, product name, etc.) is displayed in a range including the central portion of the outer surface of each long side wall portion 8. Although details will be described later, in this embodiment, the label 11 (in-mold label) having the predetermined information printed on the surface thereof is insert-molded so that the surface is exposed on the outer surface of the long side wall portion 8. Thus, the predetermined information is displayed.

  As shown in FIGS. 1 and 6, the label 11 has a rectangular shape that is long on the left and right sides, and surrounds the information display area 12 printed with predetermined information (not shown) on the surface and the entire outer peripheral edge of the information display area 12. The free space area 13 is formed in a square frame shape. The label 11 is made of polypropylene. In particular, in the present embodiment, the empty space 13 is transparent (colorable) and the information display area 12 is opaque. Moreover, the width | variety of the empty margin area | region 13, ie, the distance between the outer periphery of the label 11, and the information display area 12, is 2.0 mm in any site | part. In the present embodiment, the outer surface of the long side wall portion 8 constitutes the display surface, and the bottom wall portion 2 (the upper surface of the bottom wall portion 2) constitutes the placement portion. In addition, the free space area 13 constitutes a fluoroscopic part, and the information display area 12 constitutes a general part of the label.

  Next, the mold apparatus 21 which shape | molds the box-type container 1 is demonstrated with reference to FIGS. In FIG. 3, for the sake of convenience, the left half shows a cross-section at the site forming the longitudinal center of the long side wall 8 and the right half at the site forming the vicinity of one longitudinal end of the long side wall. A cross section is shown.

  As shown in FIG. 3, the mold apparatus 21 includes a female mold 22 that molds the lower surface of the bottom wall portion 2, a male mold 23 that molds the upper surface of the bottom wall portion 2, the inner peripheral surface of the peripheral wall portion 3, and the like. A long-side slide mold 24 that molds the outer surface and the like of the long-side side wall portion 8 and a short-side slide mold (not shown) that molds the outer surface and the like of the short-side side wall portion 9 are provided. Each of these molds 22 to 24 is formed with a molding surface corresponding to the surface shape of the box-shaped container 1, and a cavity 25 for molding the box-shaped container 1 is formed by these molding surfaces.

  As shown in FIGS. 4 and 5, the long-side slide mold 24 is fitted into the concave portion 32 and a main body portion 31 in which a rectangular concave portion 32 that is long on the left and right is formed on the molding surface that defines the cavity 25. The nesting 41 is provided. The main body 31 is formed with a communication hole 33 that allows communication between the bottom surface of the recess 32 and the surface opposite to the surface on which the recess 32 is formed.

  The nesting 41 basically has a rectangular parallelepiped shape that fits in the recess 32 of the main body 31. The molding surface 42 of the nesting 41 that forms the cavity 25 is substantially similar to the label 11. It has a shape. In addition, as shown in FIG. 7, guide grooves 44 are formed in a lattice shape on the bottom surface 43 of the insert 41 that faces the bottom surface of the recess 32. The guide groove 44 extends from a portion of the basal surface 43 facing the communication hole 33 (see the two-dot chain line in FIG. 7A) to the edge of the basal surface 43. Furthermore, an extension groove 45 extending from the end edge of the guide groove 44 to a portion in the vicinity of the molding surface 42 of the insert 41 on the outer peripheral surface of the insert 41 facing the inner peripheral surface of the recess 32, and the tip of the extension groove 45 A circumferential groove 46 extending across the entire circumferential direction of the outer peripheral surface of the insert 41 is formed so as to connect the two.

  When the nest 41 is accommodated in the recess 32 until the base bottom surface 43 of the nest 41 contacts the bottom surface of the recess 32, the molding surface 42 of the nest 41 is substantially flush with the molding surface of the main body 31. Further, with respect to the molding surface of the main body 31 surrounding the molding surface 42 of the insert 41, there is no step between the installation area where the label 11 (described later in detail) is installed and the surrounding general area, and it is flush. ing. However, in this embodiment, between the entire peripheral area of the outer peripheral surface between the circumferential groove 46 and the molding surface 42 of the insert 41 and the inner peripheral surface of the concave portion 32, about 0.02 mm to 0.05 mm. A gap is formed. That is, on the molding surface of the long side slide mold 24, as shown in FIG. 6, a slit 26 communicating with the communication hole 33 extends in a substantially square shape between the insert 41 and the main body 31. In this way, it is formed.

  In addition, as shown in FIGS. 5 and 7B, the outer peripheral surface between the circumferential groove 46 of the nest and the base bottom surface 43 has an inner periphery of the recess 32 when the nest 41 is accommodated in the recess 32. It comes in contact with the surface. Thereby, rattling of the nesting 41 is prevented. The insert 41 is detachably attached to the main body 31 by attachment means (not shown).

  Further, a suction device such as a vacuum pump (not shown) is connected (communication) to the communication hole 33 of the main body 31. When the suction device is driven, air in the cavity 25 is sucked through the communication hole 33, the grooves 44, 45, 46 and the slit 26. Since the slit 26 has a width of about 0.02 mm to 0.05 mm, air can pass through the slit 26, but molten thermoplastic resin (in this example, polypropylene) does not pass through the slit 26. It is possible. Moreover, the pressure reduction force of the suction by the suction device is -0.01 Mpa to -0.2 Mpa.

  Further, as shown in FIG. 3, the female die 22 is formed with a gate 27 that communicates with the cavity 25 and a sprue 28 that communicates with the gate 27 and engages with the nozzle tip of an injection device (not shown). ing. The female mold 22 is provided with a hydraulic cylinder 29 for displacing each long side slide mold 24.

  Next, a method for manufacturing the box-shaped container 1 will be described. First, with the mold device 21 opened, the suction device is driven, and the label 11 is printed on the molding surface of the long side slide mold 24 so as to cover the entire molding surface 42 of the insert 41. It is installed so that the surface is in contact with the molding surface of the long side slide mold 24. As a result, the label 11 is sucked by the suction device through the slit 26, the grooves 44, 45, 46, the communication hole 33, and the like, and the label 11 is held in close contact with the molding surface.

  In particular, in this embodiment, the shape of the information display area 12 of the label 11 and the shape of the molding surface 42 of the insert 41 are substantially the same. While confirming the position of the slit 26 through 13, the outer peripheral edge of the information display area 12, that is, the boundary line between the information display area 12 and the vacant margin area 13, and the slit 26 of the long side slide mold 24 are matched. In this way, the label 11 (see the two-dot chain line in FIG. 6) is installed. As described above, the width of the empty margin area 13 is 2.0 mm, and the label 11 is formed by aligning the boundary line between the information display area 12 and the empty margin area 13 and the slit 26 of the long side slide mold 24. However, about 2.0 mm basically protrudes from the slit 26 to the outer peripheral side over the entire peripheral area.

  In the present embodiment, the corner portion of the molding surface 42 of the insert 41 has an R shape, while the corner portion of the label 11 does not have an R shape and intersects substantially at a right angle. For this reason, in the installation process, in the corner portion of the label 11, the distance between the outer peripheral edge of the label 11 and the slit 26 is larger than the other parts, but in this embodiment, the distance is 5.0 mm. It is configured to fit within.

  Then, the mold is clamped while the label 11 is sucked by the suction device, and the molten polypropylene is filled into the cavity 25 through the sprue 28 and the gate 27 formed in the female die 22, Solidify. After the solidification is completed, the box-shaped container 1 formed by opening the mold is removed from the mold apparatus 21. As described above, the bottom wall 2, the peripheral wall 3, the flanges 4, 5, 6 and the like are provided, and the long side wall 8 is exposed by the label 11 exposed on the outer surface of the long side wall 8. Thus, the box-shaped container 1 on which the predetermined information is displayed is obtained. In the present embodiment, when the box-shaped container 1 is formed, the label 11 is sucked by the suction device through the slit 26 to hold the label 11. Therefore, the manufactured box-shaped container 1 includes the label 11. The trace of the ridge is formed along the portion sucked by the slit 26, that is, along the boundary portion between the information display area 12 and the empty margin area 13 of the label 11.

  As described above in detail, according to the present embodiment, when the box 11 is formed, when the label 11 is placed on the forming surface of the long-side slide mold 24 of the mold apparatus 21, the container 11 has a substantially rectangular shape. The label 11 is installed so as to protrude about 2.0 mm on the outer peripheral side across the slit 26 having a substantially rectangular frame shape over the entire outer peripheral edge. Thereby, the gap 11 does not enter the slit 26 from between the label 11 and the peripheral edge of the slit 26, and the label 11 can be securely held by the suction force of the suction device, and the outer periphery of the label 11 can be held. Can also exert sufficient holding power. Therefore, even if the molten resin (polypropylene in this example) flowing into the cavity 25 from the gate 27 hits the outer peripheral edge of the label 11, the label 11 is kept in close contact with the molding surface of the long side slide mold 24. It is possible to prevent the label 11 from being lifted, misaligned, wrinkled, and the like. In particular, in this embodiment, since the label 11 is installed so as to cover the entire rectangular frame-shaped slit 26 formed corresponding to the outer peripheral edge of the label 11, the label 11 is attached over the entire circumference of the label 11. It is possible to suck more strongly, the above-mentioned operational effects are more reliably achieved, and melting is performed while avoiding a situation in which a molten resin enters between the label 11 and the molding surface of the long side slide mold 24. The filling rate of the resin into the cavity 25 can also be increased.

  If the protruding length of the label 11 from the slit 26 exceeds 5.0 mm, the holding force due to suction of the suction device is difficult to reach the outer peripheral edge of the label 11, and the molten resin is If it hits the outer peripheral edge vigorously, the outer peripheral edge of the label 11 is lifted, and there is a risk of causing problems such as the molten resin entering between the label 11 and the molding surface of the long side slide mold 24. On the other hand, when the protruding length of the label 11 from the slit 26 is less than 1.0 mm, the portion of the label 11 sucked by the slit 26 is slightly drawn to the slit 26 side. There is a possibility that the label 11 is not properly adsorbed (a gap is formed between the peripheral portion of the slit 26 and the label 11 and air flows into the slit 26 from there) and the holding becomes insufficient. Yes, not preferred.

  The label 11 has a transparent margin area 13 formed along the outer peripheral edge thereof. For this reason, in the process of installing the label 11 in the cavity 25, the label 11 can be installed while visually recognizing the position of the slit 26 through the empty space 13. In particular, in this embodiment, since the width of the empty margin area 13 is about 2.0 mm in any part, the boundary between the information display area 12 and the empty margin area 13 and the slit 26 are positioned. By placing the label 11 while aligning, the label 11 can be relatively disposed at a suitable position where the outer edge of the label 11 protrudes from the slit 26 to the outer peripheral side by about 2.0 mm. Therefore, the label 11 and the slit 26 can be more accurately arranged relative to each other while improving workability. Furthermore, it is not necessary to turn the label 11 in order to confirm the position of the slit 26 again from the state where the slit 26 and the label 11 overlap with each other, and the situation where the label 11 is deformed can be avoided.

  In addition, the marks (projections) of the slit 26 formed in the portion of the label 11 sucked by the suction device through the slit 26 are formed at the boundary portion between the information display area 12 and the free space area 13 of the label 11. It will be formed along. Therefore, it can be made inconspicuous compared with the case where the mark of the slit 26 is formed in other parts of the label 11, and the deterioration of the appearance quality can be suppressed. Furthermore, the boundary part between the information display area 12 and the free allowance area 13 of the label 11 can be seen more clearly, and the design can be improved.

  In addition, in this embodiment, the surface of the label 11 is formed so as to be flush with the outer surface of the long side wall portion 8. For this reason, when the box-shaped container 1 is transported or the like, it is possible to suppress a situation in which the label 11 is rubbed and damaged by other members or the floor surface.

  In the present embodiment, by inserting the insert 41 into the recess 32 communicating with the communication hole 33, the slit 26 is formed between the molding surface of the insert 41 and the opening peripheral edge of the recess 32, and The nest 41 is formed with a guide groove 44 formed on the base surface 43, an extension groove 45 formed on the outer peripheral surface, and a circulation groove 46. Even if the base bottom surface 43 of the insert 41 and the bottom surface of the recess 32 are brought into contact with each other due to the presence of the guide groove 44, an air passage for sucking the label 11 by the suction device is provided on the inner peripheral surface of the recess 32. Can be secured. For this reason, the suction force for sucking the label 11 can be improved without increasing the suction force itself of the suction device. Further, the base 41 of the insert 41 and the bottom of the recess 32 are brought into contact with each other, so that the play of the insert 41 can be suppressed, the mounting state is stabilized, and the configuration relating to the attachment of the insert 41 is simplified. Can be achieved.

  Further, due to the presence of the extension groove 45, the air passage for sucking the label 11 by the suction device can be extended from the end of the guide groove 44 to the molding surface 42 side. Therefore, even when the clearance between the outer peripheral surface of the insert 41 and the inner peripheral surface of the recess 32 is small, the suction force for sucking the label 11 can be improved without increasing the suction force itself of the suction device. it can. In particular, in the range in which the extension groove 45 is formed (the portion between the circumferential groove 46 and the base surface 43), even if the outer peripheral surface of the insert 41 and the inner peripheral surface of the recess 32 are brought into contact with each other, the extension groove 45 Since the air passage for sucking the label 11 by the suction device communicates with the molding surface 42 side, the outer peripheral surface of the nesting 41 and the inner peripheral surface of the concave portion 32 are brought into contact with each other. Can be suppressed.

  In addition, due to the presence of the circumferential groove 46, the air passage for sucking the label 11 by the suction device can be expanded in the circumferential direction of the outer peripheral surface of the insert 41, and the suction force is partially in the extending direction of the slit 26. Can be prevented from being strong or weak. Therefore, it is possible to improve the stability of the label 11 that is sucked and held on the molding surface of the long-side slide mold 24 by the suction device, or to prevent the label 11 from partially lifting.

  Further, the suction force can be made almost constant at any part of the slit 26. In this case, the suction mark of the slit 26 formed in the manufactured box-shaped container 1 is uneven, or the label 11 is slit 26. It is possible to avoid deformation due to adsorption by partially different suction forces in the extending direction. Furthermore, when the same mold apparatus 21 is used and a relatively small label 11 is placed so as to overlap only a part of the slit 26 to form a box-shaped container or the like, the convenience is improved. be able to.

  By forming the guide groove 44, the extension groove 45, and the circumferential groove 46 in the insert 41 as described above, the label 11 can be more firmly adsorbed to the molding surface of the long side wall portion 8, and the cavity When the long side slide mold 24 is displaced from the opened state to the closed state, not only when the molten resin is filled in the molten resin 25, it is possible to reliably prevent the label 11 from dropping off or being displaced. it can.

  On the other hand, since the groove portions 44 to 46 as described above are formed so as not to cover the molding surface 42 of the insert 41, a slit between the molding surface 42 of the insert 41 and the peripheral portion of the concave portion 32 of the main body portion 31. It is possible to avoid a situation in which the width of 26 widens. Therefore, it is possible to avoid a situation in which the molten resin enters from the slit 26 due to the slit 26 becoming too wide. Further, it is possible to avoid a situation in which irregularities are formed on the surface of the label 11 held in close contact with the molding surface 42 of the insert 41 due to the formation of the groove on the molding surface 42 of the insert 41. Can do.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the label 11 is positioned such that the lower side, upper side, and left and right vertical sides of the label 11 are all located on the outer peripheral side of the slit 26. Although it is installed on the molding surface of the long side slide mold 24 and the length protruding from the slit 26 is basically 2.0 mm, at least a portion of the label 11 on the gate 27 side ( In the said embodiment, it corresponds to the site | part on the lower side part side) straddles the slit 26 (in the said embodiment, it straddles the slit 26, and it protrudes below), and the length which protruded the slit 26 among the labels 11 is 1.0 mm- It should just be in the range of 5.0 mm. That is, the molten resin injected into the cavity 25 through the gate 27 may collide with the momentum injected into the cavity 25 as it is against the lower edge of the label 11, but in other parts. On the other hand, since it reaches around the side of the label 11 or climbs over the surface, there is not so much momentum. Accordingly, even when only the portion on the gate 27 side of the label 11 is held and the other portions are not held, the lifting of the label 11 can be sufficiently suppressed.

  However, like the left and right vertical side portions of the label 11 of the above embodiment, there is a side portion where the molten resin injected from the gate 27 into the cavity 25 flows along the longitudinal direction (extending direction). In this case, it is desirable to form the slit 26 corresponding to the side portion and to make the label 11 protrude from the slit 26 by about 1.0 mm to 5.0 mm. Further, as in the above-described embodiment, the slit 26 is formed corresponding to all the side portions of the label 11 so that the molten resin enters between the label 11 and the long side slide mold 24. Can be prevented more reliably. Further, as in the embodiment described above, the entire area of the slit 26 is closed with the label 11, so that air can be prevented from flowing into the slit 26 with the label 11 placed on the molding surface. Can be held more firmly.

  (B) In the said embodiment, although the transparent empty margin area | region 13 is formed along the outer periphery whole area of the label 11, it displaced 1.0 mm-5.0 mm inner peripheral side rather than the outer periphery of the label 11 It is only necessary that the slit 26 can be visually recognized through the label 11 in the part. For example, the empty margin regions 13 may be provided at predetermined intervals along the outer peripheral edge, or the outer periphery of the empty margin region 13 may be provided. An opaque part may be formed on the side. Further, for example, in the side portion where the slit 26 is provided correspondingly, at least one transparent portion extending from the outer peripheral edge to the inner peripheral side by about 5.0 mm to 10 mm may be provided. Good. Furthermore, the vacant allowance area 13 may be translucent as long as the slit 26 can be visually recognized through the vacant allowance area 13. In addition, the free space area 13 can be omitted.

  (C) Further, in the above embodiment, the label 11 has a rectangular shape and is arranged so that the longitudinal direction extends along the horizontal direction. For example, the side portion may be bent or curved (the label 11 is circular), and each side portion of the label 11 may be the upper side portion of the long side wall portion 8 or You may arrange | position so that all may incline with respect to a lower side part. However, the protruding length of the label 11 from the slit 26 is set within the range of 1.0 mm to 5.0 mm for at least the side portion disposed on the gate 27 side of the label 11.

  Even when the configuration (c) is adopted, the portion of the label 11 on the gate 27 side is located on the gate 27 side across the slit 26 and the length of the label 11 protruding from the slit 26 is 1 It should just be in the range of 0.0 mm-5.0 mm. Note that “the portion on the gate 27 side of the outer edge portion of the label 11” means “when the gate 27 and the installed label 11 are developed on the same plane, the gate 27 and the outer edge portion of the label 11 The meaning of “a part on the gate 27 side between the contacts of two common outer tangents of the label 11” is included.

  (D) In the said embodiment, it does not specifically limit about the shape of the nest | insert 41, The shaping | molding surface 42 (surface in which the label 11 is closely_contact | adhered) which comprises the cavity 25 is the outer periphery shape of the label 11 at least. It is sufficient if the shape corresponds to. For example, as shown in FIG. 8, more grooves may be crossed as the guide grooves 44. Further, as shown in FIG. 8, the nesting 41 may be formed by combining a plurality of parts (three parts in FIG. 8). Although the number of the guide grooves 44 can be reduced, the guide grooves 44 extend through at least a portion of the base bottom surface 43 of the insert 41 that faces the communication hole 33 to the end of the base bottom surface 43. It is desirable. Further, the circumferential groove 46 formed on the outer peripheral surface of the insert 41 may not be formed over the entire periphery of the outer peripheral surface of the insert 41. By forming the peripheral groove 46, the suction of the label 11 by the suction device is possible. It is only necessary that the air passage is widened even in the circumferential direction of the outer peripheral surface of the insert 41. Further, as shown in FIGS. 9A and 9B, the circumferential groove 46 may be omitted.

  As described above, the entire outer peripheral edge of the label 11 and the entire line of the slit 26 do not necessarily coincide with each other, but, for example, a portion where the guide groove 44 and the extension groove 45 are formed is formed. It can be considered that there is a difference in suction force from the portion that is not provided, and when the label 11 is installed only corresponding to the portion where the guide groove 44 is not formed, the force for holding the label 11 is significantly reduced. There is a concern that In this regard, as shown in FIG. 8, by increasing the region where the guide groove 44 is formed, or by forming the circumferential groove 46 as in the above embodiment, a comparison is made as shown by the two-dot chain line in FIG. 8. Even when a relatively small label 11 is installed, the label 11 can be stably held. In particular, when it is desired to suppress the generation of a gap by sucking the label 11 from the entire area of the slit 26 with a relatively uniform force, it is desirable to form the circumferential groove 46 as in the above embodiment.

  Furthermore, as shown in FIG. 10, the outer dimension of the insert 41 on the molding surface 42 side is configured to be larger than that of the base surface 43 side, so that the space between the molding surface 42 side of the insert 41 and the recess 32 is increased. It is good also as comprising so that the direction of the clearance gap between the site | part on the base face 43 side and the recessed part 32 may become larger than the clearance gap of this. In this case, the effect that the suction force for sucking the label 11 through the slit 26 can be increased without increasing the suction force of the suction device itself is more reliably achieved. In addition, the part by the side of the molding surface 42 of the nest 41 is formed corresponding to the opening peripheral part of the recessed part 32 of the long side slide type | mold 24 so that the width | variety of the slit 26 may be about 0.02 mm-0.05 mm. Suppose that In addition, it is possible to make the entire surface of the insert 41 flat by omitting the guide groove 44, the extension groove 45, and the circumferential groove 46. However, by providing these grooves 44, 45, 46, the force for sucking the label 11 can be increased without increasing the suction force of the suction device itself. Furthermore, while increasing the suction force in this way, the portion of the outer peripheral surface of the insert 41 between the circumferential groove 46 and the base surface 43 is brought into contact with the inner peripheral surface of the recess 32 to position the insert 41. be able to.

  (E) In the above embodiment, the rectangular frame-shaped slit 26 is formed between the insert 41 and the opening peripheral edge of the recess 32 by fitting the insert 41 into the recess 32 formed in the long side slide mold 24. However, it is not particularly limited to such a configuration. For example, the nesting 41 may be omitted, and the slit 26 may be configured in a straight line corresponding to only the lower side portion of the label 11 installed on the gate 27 side, It is good also as being comprised in U shape corresponding to the side part on either side.

  Further, in FIG. 3 and the like, the box-shaped container 1 is formed by the mold device 21 in the direction in which the box-shaped container 1 opens upward. For example, the direction in which the box-shaped container 1 opens in the lateral direction ( You may comprise so that it may shape | mold in the direction where the bottom wall part 2 is extended up and down.

  Moreover, in the said embodiment, although the gate 27 is formed in the mold apparatus 21 in the position which shape | molds the bottom wall part 2 (the lower surface) of the box-type container 1, it is limited especially to such a structure. is not. For example, the slit 11 can be formed on the molding surface on which the gate 27 is formed, and the label 11 can be installed. Furthermore, in the said embodiment, although the label 11 is provided corresponding to the outer surface of the long side wall part 8, it is not limited to such a structure in particular, The inner surface of the long side wall part 8, It is also possible to provide on the outer surface / inner surface of the short side wall portion 9 and the upper surface / lower surface of the bottom wall portion 2. In addition, the number of labels 11 provided in the box-type container 1 and the number of wall portions provided with the labels 11 exposed are not particularly limited. For example, the long side wall portions 8 and the short side walls 8 are provided. It is good also as providing the label 11 in all the outer surfaces of the side side wall part 9. FIG.

  (F) In the above embodiment, it is embodied in the box-type container 1, but it may be applied to a transport aid used for transporting and storing articles, for example, a tray having a shallow bottom and a bottomed cylinder. In addition to a container in which the peripheral wall 3 is provided so as to surround a mounting surface such as a cylindrical container, the present invention can also be applied to a pallet 51 without the peripheral wall 3 as shown in FIG.

  Further, in the above embodiment, the lower flange 5 may be omitted, and the box-shaped containers 1 may be configured to be nestable. Furthermore, in the above-described embodiment, as shown in FIG. 12, using a mold apparatus 21 in which the part on which the label 11 of the long side slide mold 24 is installed protrudes from the other part to the inside of the cavity 25, You may form so that the site | part in which the label 11 is exposed among the outer surfaces of the long side wall part 8 may be immersed in the long side wall part 8 rather than the site | part of the outer peripheral side. In this case, damage or the like of the label 11 can be suppressed when the box-shaped container 1 is transported. Moreover, in the structure which can perform nesting of the box-shaped containers 1, the situation where the label 11 is rubbed at the time of nesting can be avoided.

  In addition, by using a mold device 21 in which the part on which the label 11 of the long side slide mold 24 is installed is immersed more than the other part, at least the surface side part of the label 11 is placed on the long side wall portion 8. You may form so that it may protrude from an outer surface.

  (G) Moreover, it is not specifically limited as information obtained by visually recognizing the label 11, It can change suitably. For example, information related to the goods transported in the box-shaped container 1 (such as the name of the company that manufactures and sells the goods, the product name of the goods), information related to transportation (such as the name of the company that transports the goods), and the box-shaped container 1 (information such as the name of the company that manufactures and sells the box-shaped container 1 and the product name of the box-shaped container 1), illustrations that improve design, and the like. Further, not only the information displayed by printing the surface of the label 11 but also information that can be recognized by the shape and installation position of the label 11 (eg, the orientation of the box-shaped container 1 can be grasped) is included.

  (H) In the above embodiment, the box-shaped container 1 is made of polypropylene, but may be made of other resin materials (thermoplastic resin) such as polyethylene, PET, and polyamide. Moreover, although the label 11 is comprised by the polypropylene film, it is good also as comprising by other resin materials, such as a polyethylene film and a nylon film. In the above embodiment, since the constituent materials of the box-shaped container 1 main body and the label 11 are the same, the recyclability can be improved.

  DESCRIPTION OF SYMBOLS 1 ... Box-shaped container, 2 ... Bottom wall part, 8 ... Long side wall part, 11 ... Label, 12 ... Information display area, 13 ... Empty space area, 21 ... Mold apparatus, 22 ... Female mold, 23 ... Male Mold, 24 ... Long-side slide mold, 25 ... Cavity, 26 ... Slit, 27 ... Gate, 31 ... Body part, 32 ... Recess, 33 ... Communication hole, 41 ... Nest, 42 ... Molding surface, 43 ... Base surface, 44 ... guide groove, 45 ... extension groove, 46 ... circulation groove.

Claims (5)

A method for manufacturing a transport aid having a placement portion on which an article can be placed and having a display surface for displaying predetermined information,
A mold apparatus having a plurality of molds for forming a cavity for molding the transport aid, an injection apparatus for injecting a molten thermoplastic resin into the cavity, and air in the cavity can be sucked Using a suction device,
Of the molding surface of the mold that defines the cavity, an installation step of installing a label so as to be in close contact with the molding surface of the mold, with respect to a portion that is to mold the display surface;
By filling with the molten resin to the cavity where the label is installed, and through a filling and solidifying step of solidifying,
A transportation aid having the above-described placement portion and having the display surface on which the predetermined information is displayed by the label is integrally formed,
In the mold, a gate for introducing the molten resin supplied from the injection device into the cavity is formed on the molding surface that defines the cavity, and the mold for molding the display surface includes: A slit is formed to allow the air in the cavity to be sucked by the suction device by communicating the cavity and the suction device,
In the installation step, the label is installed such that a portion of the label on the gate side protrudes to the gate side across the slit, and a protruding length from the slit is 1.0 mm or more, 5 A method for manufacturing a transport aid, characterized in that the thickness is 0.0 mm or less. The gate is formed in a mold for molding the lower surface of the transport aid,
The display surface is formed on a side surface of the transport aid,
The label comprises a pair of left and right vertical sides extending substantially vertically along the side surface of the transport aid,
The slit is formed in a substantially U shape or a substantially B shape corresponding to at least the lower side portion and the left and right vertical side portions of the label,
In the installation step, the label is installed so that the lower part and the left and right side parts of the label protrude across the slit to the outer peripheral side of the slit, and the protruding length from the slit is 1.0 mm or more. The method of manufacturing a transport aid according to claim 1, characterized in that it is 5.0 mm or less. The label is constituted by a transparent or translucent see-through portion, at least a part of the portion displaced by 1.0 mm to 5.0 mm from the outer periphery to the inner periphery.
The method for manufacturing a transport aid according to claim 1 or 2, wherein in the installation step, the slit is visible through the see-through portion. The see-through part is formed along the outer periphery of the label,
The said auxiliary | assistant process WHEREIN: The said label is installed so that the boundary part of the said see-through | perspective part and another general part may correspond with the said slit, The manufacture of the conveyance assistance tool of Claim 3 characterized by the above-mentioned. Method. It is formed by the manufacturing method according to any one of claims 1 to 4,
A transportation aid having a placement part on which an article can be placed and having a display surface for displaying predetermined information,
The display surface is formed by insert molding the label on which the predetermined information is printed so that the print surface is exposed,
A portion of the label that is displaced from the outer peripheral edge to the inner peripheral side by about 1.0 mm to 5.0 mm has a mark formed by holding the label by suction when the label is insert-molded. A transport aid characterized by

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