JP2008018953A - Packaging material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging material of a type for placing an article to be packaged on a shock-absorbing material in a bottom frame, and covering an upper package from thereon to package the article, capable of preventing any outward swelling of a side plate by coupling at least one shock-absorbing material with a side plate on the long ridge side, and easily putting the upper package without being caught by the side plate. <P>SOLUTION: A shock-absorbing material 3 arranged at a center part of the longitudinal direction of a bottom frame 1 is coupled with both side plates 13, 13 facing each other on the long side. The side plates 13, 13 are shifted inwardly by using the deflection of the shock-absorbing material 3 caused by the load of an article B to be packaged so as to form a space 5 for permitting the deflection of the shock-absorbing material between a lower side 35 of a back side portion of a loading part 32 to receive the article B in the shock-absorbing material 3 and a bottom part 11 of the bottom frame 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention mainly places an article to be packaged on a packaging material used for packaging of home appliances, in particular, a cushioning material arranged in a box-shaped bottom frame, and the upper packaging body is covered from above so as to cover the whole. The present invention relates to a packaging material for covering and packaging.

  As a packaging method for home appliances such as flat-screen TVs, a box-shaped bottom frame body formed of cardboard or the like and having side plates around the bottom four, a cushioning material made of synthetic resin foam disposed in the bottom frame body, and a cushioning material There is a method of using a packaging material comprising an upper packaging body that covers an object to be packaged placed on top and covers an outer periphery of a bottom frame body.

  In the packaging using such a packaging material, as shown in FIG. 8, the upper packaging body 54 is covered so as to cover the packaging material B placed on the cushioning material 52 in the bottom frame body 51 from above, and the upper packaging body 54 is further covered. The lower end portion 54 a of the package 54 is covered and wrapped so as to surround the outer periphery of the bottom frame 51.

  At this time, the side plate 51a which is bent and continuously provided at the four periphery of the bottom portion of the bottom frame 51 bulges outward by the elastic force (spring back) of the sheet material such as cardboard as shown in FIG. It is often in a state. In particular, the bulge becomes larger as the side plate 51a on the longer side becomes. For this reason, the lower end part 54a of the upper packaging body 54 is hooked on the side plate 51a of the bottom frame body 51 and cannot enter smoothly, and the packaging work takes time.

  In order to solve the above problems, the methods proposed in the past are not fully satisfactory.

  For example, in patent document 1 (Unexamined-Japanese-Patent No. 5-294380), the lower packaging body (bottom frame body) which has a standing part (side plate) in the periphery of the bottom part 4, and it inserts and fixes to the bottom part, and is to be packaged on it. In the packaging body comprising the cushioning material for placing the packaging material and the upper packaging body covering the lower packaging body so as to cover the article to be packaged, concave and concave grooves are formed at both longitudinal ends of the cushioning material. By forming and inserting and fixing the peripheral edge portion of the rising portion in the groove portion, the rising portion is prevented from bulging.

  However, in this proposal, the ease of covering is determined only by the relationship between the length dimension of the cushioning material and the inner dimension of the upper package. Even if a margin clearance is set for both dimensions, the dimensional error of the cushioning material Depending on the case, it may be difficult to cover the upper package, and therefore, a high accuracy is required for the size of the cushioning material.

  Further, in Patent Document 2 (Japanese Utility Model Publication No. 1-15652), a base for packaging in which a frame bottom plate (bottom frame) made of corrugated cardboard and two cushioning materials formed of foamed polystyrene are combined, and an upper packaging. In a packaging device comprising an exterior box as a body, a concave portion formed with an engaging tongue piece on two rising sides as opposing side plates of the frame bottom plate, and bent into the cushioning material by bending the engaging tongue piece inward By fitting and combining, the bulge to the outside of the rising side that is the side plate is prevented.

In the case of this proposal, in the combined state, the portion of the engaging tongue piece at the rising side of the bottom frame plate is in an open state, and foreign matter such as dust enters from this portion, and the packaged object is contaminated. May occur. In addition, since the engaging tongue piece is bent inward and fitted into the recess of the cushioning material, the cushioning material is disposed inside the bottom frame plate, and then the engagement tongue piece needs to be bent and fitted. In addition, if the engagement tongue piece is not sufficiently bent, a force to return it to the original force acts, and the fitting may be insufficient or may be detached.
JP-A-5-294380 Japanese Utility Model Publication 1-15652

  The present invention has been made in view of the above, and at least one cushioning material disposed on the bottom frame is coupled to the side plate on the long side to prevent the side plate from bulging to the outside, and the upper packaging. The body can be easily fitted on the outer periphery of the bottom frame body, and in particular, the side plate is brought into the inside by utilizing the bending of the cushioning material when receiving the load of the package. In this way, the side plate can be reliably prevented from bulging.

  The present invention includes a planar rectangular box-shaped bottom frame formed of a plate-like sheet material such as cardboard and having side plates around the bottom four, and a substrate disposed on the inside of the bottom frame. A packaging material comprising a cushioning material for receiving a packaging material and a box-shaped upper packaging body having an open bottom surface that covers the packaged object and covers the periphery of the bottom frame body from above. The bottom frame body is disposed in the longitudinal center of the bottom frame body and is coupled to opposite long side plates, and the bottom frame and the bottom frame of the back side portion of the mounting portion for receiving the package in the cushioning material It is provided so that it may have a space | gap which accept | permits bending of this buffer material between the bottom part of a body.

  As a result, the opposite long side plates of the bottom frame body are connected to at least one cushioning material disposed in the center in the longitudinal direction of the bottom frame body, thereby bulging outward. Is regulated. In particular, since the cushioning material has a gap between the lower surface of the back side portion of the placing part of the packaged article and the bottom part of the bottom frame body, the cushioning material receives the load of the packaged article placed thereon. So that the upper side of both end portions of the cushioning material is slightly displaced inward, and the side plates coupled to the both end portions are inclined inward. Will be attracted. Therefore, when covering the upper packaging body which forms the box shape of the open bottom surface from above so as to surround the outer periphery of the bottom frame body, it can be easily covered without causing the side plate to be caught.

  In the packaging material, the lower surface of the cushioning material coupled to the both side plates is provided with a convex portion that contacts the bottom portion of the bottom frame body at a position closer to the end portion than the back side portion of the mounting portion. Is preferred. Thereby, when receiving the load of the article to be packaged, the cushioning material can bend the center part downward with the convex part as a fulcrum without applying the load of the article to be packaged to the side plate, By this bending, the both side plates can be drawn so as to be inclined inward.

  In the packaging material, it is preferable to have a gap between the side plates on the long side of the bottom frame and the end surfaces other than the coupling portion of the cushioning material coupled to the side plates. Due to the bending of the cushioning material, the both side plates are easily displaced so as to be inclined inward, and the inward pulling of the both side plates is ensured.

  In particular, the length between both end faces excluding the joint portion between the both side plates of the cushioning material is made smaller than the inner dimension between the both side plates of the bottom frame, and the upper portions of the both side plates are in contact with the end faces. It is preferable to bind in a state. As a result, the both side plates are coupled to the buffer material in a state of being slightly inclined inward, and the effect of pulling the both side plates to the inside due to the bending of the buffer material is further increased.

  In the packaging material, as a means for connecting the side plate of the bottom frame body and the cushioning material, the notches provided on the upper side plate of the bottom frame body correspond to the notches at both ends of the cushioning material. It is preferable that the convex part formed in the shape is fitted and engaged with the side plate inward. As a result, the combination of the bottom frame and the cushioning material is facilitated, the space for opening and the breakage can be combined with stability without causing damage, and the separation work after use is facilitated.

  As described above, according to the packaging material of the present invention, it is possible to prevent the bottom frame body from bulging to the outside of the opposite long side plates by the cushioning material coupled thereto, and in particular, to receive an object to be packaged. Utilizing a gap provided between the lower back surface of the mounting portion and the bottom portion of the bottom frame body, the cushioning material is bent by the load of the article to be packed and the both side plates on the long side are drawn inward. As a result, the outward expansion of the side plate can be reliably prevented, the upper package can be easily covered so as to surround the outer periphery of the bottom frame, and the packaging operation can be easily performed.

  In addition, when the side plate of the bottom frame body and the cushioning material are joined to the notch provided in the side plate by fitting the convex portion formed at the end of the cushioning material, the space that becomes the opening It can be used without intrusion or removal of foreign matter such as dust.

  Next, embodiments of the present invention will be described based on examples shown in the drawings.

  FIG. 1 is a perspective view in which a bottom frame body, a cushioning material, and an upper packaging body of a packaging material according to the present invention are separated, and FIG. 2 is a sectional view in which the bottom frame body and a cushioning material arranged in the center are separated. 3 is a cross-sectional view of the state in which the cushioning material is fitted and arranged, FIG. 4 is an enlarged view of a part of FIG. 3, FIG. 5 is a cross-sectional view of a state in which the article to be packaged is placed on the cushioning material, and FIG. It is an expanded sectional view of the joint part of a side plate and a buffer material. FIG. 7 is a partial perspective view showing a coupling portion of another embodiment.

  In the figure, reference numeral 1 denotes a bottom frame body in the form of a flat rectangular box formed of corrugated cardboard or other moderately seated sheet material, and 2, 2 and 3 are longitudinal ends of the bottom frame body 1 And a cushioning material made of a synthetic resin foam such as polystyrene foam disposed in the central portion. Reference numeral 4 denotes an upper packaging body having a box shape with an open bottom surface that covers the article to be packaged B placed on the cushioning materials 2, 2, and 3 and is covered from above so as to surround the outer periphery of the bottom frame body 1. Usually, it is formed from a plate-like sheet material such as cardboard similar to the bottom frame 1. Although the packaging material A which concerns on this invention is comprised by the combination of the said member, the buffer material (not shown) which protects the upper part of the to-be-packaged product B other than the said member may be combined.

  The bottom frame 1 is folded into two sides on the short side opposite to each other and both sides on the long side opposite to each other, with the bottom 11 of the plane rectangle as the center. Side plates 12, 12 and 13, 13 that are bent and stand are connected to each other, and adjacent side plates are connected to each other to form a relatively shallow box shape.

  As with the bottom frame 1, the upper package 4 is formed in a box shape opened downward by the top 41 and the four side plates 42 a, 42 b, 42 c, 42 d. The top portion 41 may be formed to be openable and closable by a flap piece (not shown) connected to the side plates 42a, 42b, 42c, and 42d.

  The cushioning materials 2, 2 and 3 disposed inside the bottom frame 1 are formed with recesses 21, 21, and 31 into which the articles to be packaged B can be fitted, respectively. The package B is formed so that the package B can be placed and held in a state where the lower part of the package B is fitted to 31. That is, the bottoms of the recesses 21, 21, and 31 serve as mounting portions 22, 22, and 32 that receive the package B.

  And at least one cushioning material 3 arranged in the central part of the bottom frame 1 in the longitudinal direction, that is, the central part region between the cushioning materials 2 and 2 arranged at both ends in the longitudinal direction, It is partially coupled to the opposite long side plates 13 and 13. As a means for the connection, a part of the end surface at both end portions of the cushioning material 3 can be bonded to the side plates 13 and 13 using an adhesive, but separation work for recycling after use, or From the viewpoint of ease of combination work, it is preferable to use an engaging means that does not use an adhesive.

  In the case of the embodiment shown in the drawing, the side plates 13 and 13 on the long side of the bottom frame 1 are provided with notches 14 for engagement that open to the upper edge above the position where the cushioning material 3 is disposed. 14 is provided. The notches 14 and 14 in the figure have a substantially T-shape having the same width as the cushioning material 3 and opening at the upper edge. On the other hand, projections 33 and 33 for engagement having a shape corresponding to the notches 14 and 14, for example, a substantially T shape as shown in the figure, are formed on the upper end surfaces at both ends of the cushioning material 3. In addition, the convex portions 33 and 33 are configured to be engaged with the side plates 13 and 13 inward by being fitted into the notches 14 and 14 from above.

  As shown in the enlarged view of FIG. 6, the protrusions 33, 33 have a protruding height h from the end face of the cushioning material 3 larger than the thickness t of the side plate 13, and a base 33 a in the protruding height direction is The outer shape is substantially the same as that of the notch 14, and at least the width of the T-shaped lower part is at least the same as or slightly larger than the width of the T-shaped lower part of the notch 14 and is continuous with the base 33 a. The end portion 33b is formed to protrude slightly larger than the base portion 33a at the lower edge and both side edges in the width direction, and the cross section has a substantially mushroom shape. As a result, the protruding portion of the outer end 33 b is engaged with the peripheral edge of the notch 14 in an inward direction by elastically fitting the portion of the base 33 a into the notch 14. It has become. If the degree of overhang of the outer end portion 33b increases, damage may occur at the overhanging edge, so that the degree of overhang may be small as long as it can be engaged inward.

  In addition to the above, as the means for engaging the convex portion 33 in the notched state of the side plate 13 with the notch 14, the outer dimensions of the convex portion 33, particularly the width dimension, can be determined. The base portion of the projecting portion 33a is pushed into the notch 14 of the side plate 13 and is forcedly fitted into the notch 14. It is also possible to engage the inner periphery of the convex portion 33 with the base portion of the convex portion 33 by using the elasticity of the synthetic resin foam. In this case, the protruding height h of the convex portion 33 can be made substantially equal to the thickness t of the side plate 13. If the upper end corner of the convex portion 33 is formed on the inclined surface 34 which is chamfered as shown in the figure, it is preferable that the upper packaging body 4 can be prevented from being caught.

  Regarding the shapes of the notches 14 and the convex portions 33, in addition to a rectangular shape when viewed from the side, a trapezoidal shape or a reverse trapezoidal shape in which both side edges are slightly tapered or inversely tapered with respect to the opening of the upper edge, etc. The present invention can be carried out by a quadrangular shape, a triangular shape, a semicircular shape, a multi-stage shape such as a substantially T shape as shown in the figure, and other various shapes. From the point of stability of the inward engagement state of the convex portion 33 with respect to the peripheral edge of the notch 14, that is, the stability of the coupling state of the buffer material 3 and the side plate 13, resistance to the upward projection of the convex portion 33. It is preferable to form a large shape, for example, a quadrilateral in which both side edges are substantially perpendicular or slightly inclined with respect to the upper edge of the side plate 13 or a multistage shape as shown in the figure. Further, when the width of the cushioning material 3 is large, as shown in FIG. 7, the cutout 14 of the side plate 13 and the convex portion 33 of the cushioning material 3 are provided at a plurality of locations, for example, two locations. You can also.

  The length L1 including the convex portions 33, 33 at both ends of the cushioning material 3 is in the direction along the short side of the bottom frame 1 so as not to obstruct the covering of the upper packaging body 4. The outer dimension W1 or less is preferable. Further, the length of the cushioning material 3 excluding the convex portions 33, 33, that is, the length L2 of the cushioning material 3 excluding the joint portion between the convex portions 33, 33 and the side plates 13, 13 is: In the state where the inner dimension W2 in the direction along the short side of the bottom frame 1 is less than the inner dimension W2, particularly slightly shorter than the inner dimension W2, and coupled to the side plates 13 and 13 as described above, the side plate 13 as shown in FIG. , 13 is more preferably inclined slightly inward, because the upper package 4 can be easily covered.

  The cushioning material 3 is placed on the long-side side plates 13 and 13 as described above, and particularly when the packaging material B is not placed, the cushioning material 3 receives the packaging material B. Between the lower surface 35 of the back side part of the placing portion 32 and the bottom portion 11 of the bottom frame body 1, there is a slight gap 5 that can allow the cushioning material 3 to be bent, and the load of the packaged object B to be placed By being received, it is formed so that it can be bent and deformed downward. Therefore, the height of the cushioning material 3 is such that the lower surface 35 is slightly lifted from the bottom portion 11 when the cushioning material 3 is combined with the side plate 13 and combined as described above. Is set to hold 5. In addition, since the said buffer material 3 has the recessed part 31 formed in the center part, and has comprised the substantially U shape, even if it consists of synthetic resin foams, such as a polystyrene foam, it becomes comparatively easy to bend.

  In this case, on the lower surface 35 of the cushioning material 3 coupled to the both side plates 13, 13, the bottom frame 1 is located at a position closer to the end than the back side portion of the mounting portion 32, preferably in the vicinity of both ends. Protrusions 36, 36 that contact the bottom 11 of the product are provided, and when the load of the article to be packaged B is received, the central part can be bent downward with the convex parts 36, 36 as fulcrums. It is preferable to form it. Thereby, even if the dimensional accuracy such as the height of the cushioning material 3 is bad, the gap 5 that can be allowed to bend between the lower surface 35 and the bottom portion 11 of the cushioning material 3 can be held, and the side plate 13 The buffer material 3 can be bent without applying the load of the package B. The shape, size, and the like of the protrusions 36 and 36 are not particularly limited, but they are not crushed even when subjected to the load of the article to be packaged B.

  When the gap dimension S1 of the gap 5 is narrow, the effect due to the bending deformation of the buffer material 3, that is, the effect of bringing the side plate 13 toward the inside as described later cannot be obtained. There is a risk of cracks. Therefore, although the gap dimension S1 varies depending on the size of the packaging material, etc., it is usually about 2 to 10 mm, particularly preferably about 3 to 5 mm.

  Further, the length L2 of the cushioning material 3, that is, the length L2 fitted between the both side plates 13 and 13, is made slightly smaller than the inner dimension W2 in the direction along the short side of the bottom frame 1, so that the side plate 13 is formed. If the gap 6 is held between the end face of the cushioning material 3 and the side plate 13 after being slightly tilted inward, the side plates 13, 13 can be easily moved inward.

  According to the packaging material A of the above embodiment, the cushioning materials 2 and 2 are disposed at both ends in the longitudinal direction of the bottom frame 1, and the cushioning material 3 is disposed at the center in the longitudinal direction. The convex portions 33 and 33 at both ends are fitted into the notches 14 and 14 provided on the long side plates 13 and 13 so as to be engaged inward, thereby maintaining the coupled state. Thereby, the bottom frame body 1 and the cushioning material 3 can be easily combined, and can be combined without causing a space or breakage to be opened. At this time, when the length L2 of the cushioning material 3 is smaller than the inner dimension W2 in the direction along the short side of the bottom frame 1, the side plates 13 and 13 are slightly inclined inward as shown in FIG. Become. Moreover, the outward expansion of the side plates 13 and 13 coupled to the cushioning material 3 is restricted.

  Moreover, since the said buffer material 3 has the space | gap 5 between the lower surface 35 of the back side site | part of the mounting part 32 of the to-be-packaged goods B, and the bottom part 11 of the said bottom frame 1, on the said buffer material 3 When the article to be packaged B is placed, it receives the load of the article to be packaged B and is bent downward slightly in the range of the gap 5. Along with this bending, the upper sides of both end portions of the cushioning material 3 are slightly displaced inward, and the side plates 13 and 13 coupled to the both end portions are further brought closer to each other so as to be inclined inward ( FIG. 5). Therefore, when the upper packaging body 4 having the box shape of the open bottom surface is covered from above so as to surround the outer periphery of the bottom frame body 1, It can be easily put on without causing a catch. Further, due to the inward displacement of both end portions due to the bending of the cushioning material 3, the dimensional error of the cushioning material 3 can be absorbed to some extent, and high dimensional accuracy is not required in the production of the cushioning material 3. Become.

  In particular, if convex portions 36 and 36 that are in contact with the bottom portion 11 of the bottom frame 1 are provided at positions near the end portions of the lower surface 35 of the cushioning material 3, the side plates 13 and 13 are packaged. Without applying the load of B, the convex portions 36 and 36 can be bent downward, and the side plates 13 and 13 can be bent inward by bending of the cushioning material 3 without bending and deforming. .

  In addition, in the above-mentioned Example, although the case where the one buffer material 3 was arrange | positioned in the center part separately from the buffer materials 2 and 2 of the longitudinal direction both ends of the bottom frame 1 was shown, the dimension of a longitudinal direction is shown. In some cases, a plurality of cushioning materials may be arranged at intervals in the center portion, and in that case, at least one cushioning material may be configured and implemented as described above, Swelling to the outside of both side plates can be prevented.

  The packaging material of the present invention is a packaging material used for packaging various products such as household electrical appliances, and in particular, a packaged material is placed on a cushioning material arranged in a box-like bottom frame, and this whole is covered. Thus, it can utilize suitably for the packaging material of the system which covers and covers an upper package from above.

It is the perspective view which isolate | separated the bottom frame of the packaging material which concerns on this invention, the shock absorbing material, and the upper packaging body. It is sectional drawing which isolate | separated the bottom frame same as the above and the shock absorbing material arrange | positioned in the center part. It is sectional drawing of the state which fitted and arranged the buffer material same as the above. It is a one part enlarged view same as the above. It is sectional drawing of the state which mounted the to-be-packaged item in the shock absorbing material. It is an expanded sectional view of the joint part of a side plate same as the above and a buffer material. It is a partial perspective view which shows the coupling | bond part of another Example. It is a perspective view before covering the upper packaging body explaining the packaging state by the conventional packaging material. It is sectional drawing in the longitudinal direction center part same as the above.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Bottom frame body, 2 ... Cushioning material, 3 ... Cushioning material arrange | positioned in center part, 4 ... Upper packaging body, 5 ... Gap, 6 ... Gap, 11 ... Bottom part, 12 ... Side plate of short side, 13 ... Side plate on long side, 14 ... notch for engagement, 21, 31 ... recess, 22, 32 ... mounting portion, 33 ... convex portion for engagement, 33a ... base, 33b ... outer end, 34 ... inclined A surface, 35 ... lower surface, 36 ... convex part, A ... packaging material, B ... to-be-packaged object.

Claims (5)

A flat rectangular box-shaped bottom frame body formed of a plate-like sheet material such as cardboard and having side plates around the bottom portion 4 and an object to be packaged placed on the inside of the bottom frame body. In a packaging material composed of a cushioning material and a box-shaped upper packaging body having an open bottom surface that covers the packaging object and covers the periphery of the bottom frame from above,
At least one cushioning material is disposed at the center of the bottom frame in the longitudinal direction, and is coupled to opposite side plates on the long side. A packaging material, characterized in that it is provided between the lower surface of the base frame and the bottom portion of the bottom frame so as to have a gap allowing the cushioning material to bend.   The lower surface of the cushioning material coupled to the both side plates is provided with a convex portion that is in contact with the bottom of the bottom frame body at a position closer to the end than the back side portion of the mounting portion. Packaging material.   The packaging material of Claim 1 or 2 which has a space | gap between the side plate of the long side of the said bottom frame, and end surfaces other than the coupling | bond part of this buffer material couple | bonded with this side plate.   The length between the two end faces excluding the joint portion of the cushioning material with the two side plates is smaller than the inner dimension between the two side plates of the bottom frame, and the upper portions of the two side plates are joined in contact with the end faces. The packaging material according to claim 3. As a coupling means between the side plate of the bottom frame and the buffer material, a protrusion formed on the both ends of the buffer material in a shape corresponding to the notch with respect to the notch provided at the upper part of the side plate of the bottom frame body The packaging material according to any one of claims 1 to 4, wherein the shape portion is fitted and engaged with the side plate in an inward direction.

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