JP5079607B2 - Root vegetables packaging materials and packages - Google Patents

Description

  The present invention relates to a packaging material and a package used for transporting and storing root vegetables such as Nagatoro and lotus root.

  Traditionally, when transporting and storing root vegetables that are a kind of yam belonging to the genus Yam or long roots such as a lotus root, the main purpose is buffering, fixing, water absorption, moisture retention, sawdust, wood A woody natural material such as hair is used, and the root vegetables are stored in a cardboard box together with the material.

  In recent years, the wood-based natural materials such as sawdust and wood wool are made unnecessary due to the problem of separation and disposal work after use and the cost of processing, as well as concerns about securing future materials. There is a need for alternative materials and packaging materials that can be used.

  For example, as a container for a long bag, as in Patent Document 1 and Patent Document 2, in a container formed from a thermoplastic resin sheet, a long groove-shaped concave portion for storing the long bag is provided side by side, and inward at the bottom of the concave portion. The thing which formed the unevenness | corrugation which became bellows shape with respect to the width direction is disclosed in which the bulging many protrusions were formed in the zigzag form.

  However, in any of the above-mentioned containers, since only a buffering protrusion or unevenness is provided at the bottom of the concave part having a square cross section, it is resistant to impacts caused by a lateral drop or an oblique drop. If the root vegetables stored are slightly smaller in diameter than the groove width, the cushioning effect is low, and there is a risk that the stored long bean will break, and the size and shape of the root vegetables are low. May not be held stably and may swing in the recess due to vibration during transportation. In addition, if root vegetables are in wet contact with condensed water generated on the surface, root vegetables may be damaged. Therefore, it is desirable to reduce the wet contact area due to condensed water as much as possible, and it has moisture retention. Was desired.

  Therefore, as a packaging material for root vegetables, a concentric semicircular ridge rib that bulges inward at every predetermined interval in the longitudinal direction is provided as a shape of a long groove-like storage recess for storing root vegetables. Has proposed a bellows-like packaging material (Patent Document 3).

In this case, root vegetables such as long persimmon and lotus root can be stored and held in a stable manner, have buffering properties, and also have the effect of water separation and moisturizing. Although it can easily cope with changes in size, the buffering properties in the longitudinal direction of stored root vegetables such as long bean are not fully satisfactory. For example, when the root vegetables fall sideways along the longitudinal direction, the end parts of the root vegetables may hit the end wall of the storage recess and break.
Japanese Utility Model Publication No. 58-36710 Japanese Utility Model Publication No. 58-36715 Utility Model Registration No. 31377751

  The present invention has been made to solve the above-mentioned problems in the packaging materials for root vegetables such as Nagatoro and lotus root, and can easily cope with changes in the shape and size of the root vegetables. It can be stored and held in a stable manner, has good water separation and moisture retention, provides good protection of root vegetables, and has excellent buffering properties, particularly buffering against lateral drops along the longitudinal direction of the stored root vegetables. The present invention provides a packaging material that can be suitably used for the shipment and transportation of vegetables, and further provides a packaging body that can hold root vegetables with good freshness as a packaging body that uses the packaging material.

The root vegetables packaging material of the present invention that solves the above problems is formed by integrally forming a plurality of storage recesses in a semicircular cross-sectional shape with a semicircular cross section for storing the root vegetables to accommodate the root vegetables. The concavity is formed into a bellows shape in the longitudinal direction by forming concentric semicircular ridge ribs that bulge inwardly at predetermined intervals in the longitudinal direction, and is adjacent to the concave portion. The convex ribs of the two storage recesses are in a staggered position, and the partition wall between the storage recesses has a wave shape on the upper end surface . A flap for contact during storage is connected to the back side so that it can be bent, and the flap is in contact with the end wall portion at a portion facing the longitudinal end wall portion of the storage recess in the bent state. A shock-absorbing convex portion that can come into contact is provided.

As a result, root vegetables such as long bean and lotus root can be stored and held in a stable manner, with excellent buffering properties required for this type of packaging material, as well as good water and moisture retention, and good protection of root vegetables. Also, it can easily cope with changes in the shape and size of root vegetables. In particular, in the case of the present invention, a flap for contact with the outer box side plate at the time of storing in the outer box is connected to the edge portions on both ends in the longitudinal direction of the storing recess so as to be bent to the back side. Therefore, when the root vegetables are stored in the storage recess and packed in the outer box and packed, the flap elastically contacts the side plate of the outer box so that the flap serves as a cushion between the outer box and the outer box. Therefore, it is possible to absorb the dimensional error between the packaging material and the outer box, to prevent the packaging material from moving and loosening in the outer box, and to pack with good stability.
In addition, the partition wall between the two storage recesses having a wave shape as described above is more easily elastically deformed than the partition wall when the convex ribs and the concave strips are aligned and aligned with each other. This, combined with the fact that the storage recess has an accordion shape, makes it possible to more easily cope with changes in the shape and size (length and thickness) of root vegetables, and the buffering properties are also improved. In addition, since the protruding ribs of the two storage recesses adjacent to each other are in a staggered position, the protruding ribs of both the storage recesses correspond to the recesses between the protruding ribs, and the upper end surface of the partition wall If the minimum width is constant, the distance between the two storage recesses is smaller than in the case where both the convex ribs and the concave strips are aligned at the corresponding positions, and thus the width dimension of the entire packaging material. Can be reduced.

  In addition, since the flap is provided with a buffering convex portion that can come into contact with the end wall portion in a portion facing the longitudinal end wall portion of the storage recess in the bent state, the end wall The portion is elastically supported by the convex portion, and can exhibit a good cushioning property against root vegetables in contact with the end wall portion. For example, when the storage recess falls in the longitudinal direction, the impact of the end of a root vegetable such as a long bean coming into contact with the end wall can be mitigated, and damage such as damage to the end of the root vegetable can be prevented.

  In the above-mentioned root vegetable packaging material, when the flap is bent at a right angle or near a right angle with respect to the flat surface portion of the sheet, the cushioning convex portion elastically contacts the longitudinal end wall portion of the storage concave portion. What is provided so that it may obtain is preferable. Thereby, the impact absorption effect in the longitudinal direction can be favorably maintained.

  In the packaging material, it is preferable that the protruding rib has a triangular cross-section with a rounded top, and the upper end surface of the partition wall has a triangular wave shape. As a result, the contact area of the root vegetables with the protruding ribs can be reduced, so that the dew condensation water or the like is less likely to stay, so that the wet contact area of the root vegetables is reduced, and the root vegetables are more unlikely to be damaged, thus providing good protection. It can be done.

  The thermoplastic resin sheet is a foamed sheet, which is lightweight and has better buffering properties.

  Further, the present invention provides a package for root vegetables using any of the packaging materials of the invention, and the packaging material is for exterior use in a state where the flaps on both ends in the longitudinal direction of the storage recess are bent to the back side. It is housed in an outer box, and root vegetables sealed and wrapped with a film are housed and packaged in each housing recess of the packaging material. In this bag body, the root vegetables to be stored are hermetically packaged with a film, so that a decrease in freshness of the root vegetables can be suppressed.

  According to the packaging material of the present invention and the package using the packaging material, root vegetables such as long persimmon and lotus root can be stably stored and held, and the buffering property required for this type of packaging material, particularly the root vegetables. Excellent longitudinal cushioning, good water separation and moisture retention, good protection of root vegetables, can easily respond to changes in the shape and size of root vegetables, transportation of root vegetables, Can be used well for storage.

  Furthermore, according to the package of the present invention, the effect of the packaging material and the effect of hermetic packaging by the film can be combined to enhance the effect of keeping the freshness of root vegetables and preventing discoloration.

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

  1 is a plan view showing an embodiment of a packaging material for root vegetables according to the present invention, FIG. 2 is an enlarged perspective view of a part of the packaging material, and FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3, FIGS. 5A and 5B are explanatory views of the partition wall, and FIG. 6 is a cross-sectional view of the use state in which the present invention is set in the outer box. 7 is a schematic plan view showing another example of the use state of the present invention, FIG. 8 is a cross-sectional view of the same, and FIG. 9 is a partial cross-sectional view showing another use state.

  The packaging material A of this embodiment is mainly used for packaging root vegetables B such as long persimmons and lotus roots that are longer than the diameter of the thickness, and as shown in the figure, a thermoplastic resin sheet From the sheet forming processing means such as press forming and vacuum forming, the peripheral portion of the sheet plane is left in the shape of a flat plate and is recessed so as to have a semicircular cross section for accommodating the root vegetables B. A plurality of storage recesses 1 are arranged in parallel at a required interval. In the case of the figure, four storage recesses 1 are arranged side by side. Reference numeral 2 in the figure indicates a partition between the storage recesses 1 and 1.

  The storage recess 1 is provided with concentric semicircular convex ribs 3 bulging inward at predetermined intervals in the longitudinal direction, and the concave ribs 4 between the convex ribs 3 and the convex ribs 4. Thus, the entire storage recess 1 has a bellows shape in the longitudinal direction.

  As long as the convex rib 3 has a concentric semicircular shape, the storage recess 1 may have a trapezoidal, semicircular, or arcuate cross section in the longitudinal direction. A cross-sectional shape having a rounded top 3a so that the contact area with the class B is as small as possible and not damaging the root vegetables, for example, as shown in the figure, the top 3a has a rounded triangular cross-section. Is preferred. In particular, when the ridge rib 3 and the groove portion 4 between the ridge ribs 3 and 3 are formed so as to have a wave shape such as a triangular waveform or a sine waveform in the longitudinal section, root vegetables It becomes easy to elastically deform following the change in the shape and size of B.

  The height H and the arrangement pitch (interval) P of the ridge rib 3 are appropriately set according to the thickness and elasticity of the thermoplastic resin sheet, the size of the storage recess 1 and the type of root vegetables B to be stored. For example, when the root vegetable B is long, the ridge rib 3 from the bottom of the maximum diameter of the ridge portion 4 from the viewpoint of stability of the support state, buffer effect, contact area, etc. The height H is preferably 10 to 20 mm, and the arrangement pitch P is preferably in the range of 20 to 40 mm. Of course, implementation outside the above range is also possible.

  Each of the storage recesses 1 can be implemented by arranging the protruding ribs 3 and the recesses 4 side by side in the same row, but in the illustrated embodiment, the adjacent storage recesses 1 , 1 so that the protruding ribs 3 are in a staggered position, the positions of the protruding ribs 3 are shifted by a half of the arrangement pitch of the protruding ribs 3. The protruding ribs 3 and the other recessed ribs 4 are arranged, and the partition wall 2 between the two adjacent recesses 1 and 1 has a wave shape on the upper end surface 2a. The corrugated shape of the upper end surface 2a of the partition wall 2 is a corrugated shape corresponding to the shape of the convex ribs 3 and concave grooves 4, such as a triangular wave shape (zigzag shape) as shown in the figure.

  As described above, the protruding ribs 3 of the adjacent storage recesses 1 and 1 are in alternate positions, and the partition wall 2 between the storage recesses has a wave shape on the upper end surface 2a as shown in FIG. In this case, the partition wall portion 2 is more easily elastically deformed in shape than the partition wall portion 2 when the convex ribs 3 and the concave stripe portions 4 are arranged in the same row as shown in FIG. This, combined with the fact that the storage recess 1 has a bellows shape, can easily cope with changes in the shape and size (length and thickness) of the root vegetables, and the buffering property is also improved. In particular, the bottoms of the recesses 4 and 4 of the storage recesses 1 and 1 are formed so as to enter the position of the center in the width direction or the other side of the center on the upper end surface 2a of the partition wall 2. If it exists, it will become easier to elastically deform and buffer property will become high.

  Further, in the case of the wavy partition wall portion 2 [FIG. 5A], the interval S1 between the two storage recesses 1 and 1 adjacent to each other by the partition wall portion 2 is the ribs and recesses of the storage recesses. Can be set to be narrower than the interval S2 in FIG. 5B. For example, in the case of the wavy partition wall 2 shown in FIG. 5A, the minimum width between the protruding ribs 3 of the two adjacent storage recesses 1 and 1 and the other recess 4 is the same height, When the ribs 3 and the concave strips 4 having the same pitch are arranged in the same row, if the width is the same as the minimum width between the concave strips 4 and 4 in the partition wall 2 in FIG. The space between the storage recesses 1 and 1 is reduced by the height of the convex rib 3. Therefore, it becomes easy to match the dimensions of an existing outer box such as a folding container or a cardboard box, which will be described later, and space saving during transportation and storage can be achieved.

  In any case, a contact flap 5 that can be bent downward is formed in a V-groove shape on the back side at the end edges of the packaging recess A on both ends in the longitudinal direction of the storage recess 1. It is connected via the bending part 6 which makes a hinge structure. Thus, when the packaging material A is accommodated in the outer box C and packed, it is easy to be accommodated in the outer box C, and the flap 5 elastically contacts the inner surface of the side plate of the outer box C, thereby It plays a role (FIGS. 6 and 9), and can improve the buffering property against vibration and impact in the longitudinal direction of the storage recess 1. The flap 5 has such a length that the lower end does not protrude downward from the lower surface of the recess 4 having the maximum diameter of the storage recess 1 in a state where the flap 5 is bent downward.

  In the folded state, the flap 5 has a portion corresponding to the longitudinal end wall portion 1a of the housing recess 1 in the folded state where the flap 5 is at a right angle or near a right angle with respect to the sheet plane portion. A shock-absorbing convex portion 7 capable of elastic deformation that can elastically abut against one longitudinal end wall portion 1a is provided. It is preferable that the convex portion 7 is formed so as to bulge out toward the back surface with respect to the flap 5 because it can retain good elasticity. The planar shape of the convex portion 7 may be any shape such as a circle, an ellipse, or a quadrangle, and one convex portion 7 is provided at a portion corresponding to the end wall portion 1a of one storage concave portion 1. A plurality of convex portions may be provided corresponding to the two end wall portions 1a.

  As the thermoplastic resin sheet forming the packaging material A, there are polystyrene resin, polyolefin resin such as polypropylene and polyethylene, high density polyethylene resin, polyester resin, polyvinyl chloride resin and other appropriate elasticity. In addition, various synthetic resin foam sheets having shape retention strength, or synthetic resin foam sheets provided with a non-foamed resin skin layer on one or both surfaces of these synthetic resin foam sheets are preferably used. Of course, a non-foamed resin sheet of the synthetic resin can also be used.

The thickness in the case where the thermoplastic resin sheet is a foam sheet varies depending on the material used, but in the case of a polystyrene resin foam sheet, the thickness is about 1 to 3 mm, and the density is 0.05 to 0.2 g / Those foaming to about cm ³ are preferable. In the case of a foamed sheet of a crosslinked polypropylene resin, a foamed sheet having a thickness of about 2 to 6 mm and a density of about 0.02 to 0.1 g / cm ³ is preferable.
The packaging material A is usually set in an outer packaging box C such as a corrugated cardboard box or a plastic folding container, and a long bag or lotus root to be packaged as shown in FIG. 6, FIG. 7 or FIG. Root vegetables B such as are stored in each storage recess 1 and used.

  For example, a plastic folding container is used as the outer box C, the packaging material A of the present invention is accommodated in the container, and the packaging material A is accommodated in each storage recess 1 and shipped, delivered, and displayed as it is. Later, the container can be collected and used repeatedly. The root vegetables B to be stored can be stored directly in the storage recess 1 (FIG. 6), but mainly in order to obtain an effect of suppressing a decrease in freshness, a plastic film as shown in FIGS. In particular, it is preferable to store and package in a hermetically sealed state with the film 8 having good gas barrier properties.

  That is, in packaging in which agricultural products are sealed with a plastic film, the gas environment inside the film is stable at an oxygen concentration of 2 to 3% and carbon dioxide gas of 5 to 10%, and an environment with a low oxygen-high carbon dioxide concentration compared to the atmosphere. It is known that there is an effect (CA effect) that suppresses a decrease in freshness by storing in this environment as compared with those stored in the atmosphere. By sealing and packaging with a barrier film 8, the fineness retention system can be used, and in combination with the effect of preventing drying by the film, the freshness of root vegetables B is prevented and discoloration is prevented. Can enhance the effect.

  When packing the root vegetables B in a state of being stored in the storage recess 1 as described above, the packaging material A is used by being stored and set in an outer box C such as a container alone, as illustrated in FIG. The packaging material A ′ having the same form can be used as an upper lid on the root vegetables B stored in the packaging material A. That is, two packaging materials A and A ′ can be used in combination. Further, without using the packaging material A as an upper lid, it is possible to cover the root vegetables B with a cushioning sheet such as an air cap sheet. 9 shows a state in which the root vegetables B are not hermetically packaged by the film 8, but it goes without saying that the root vegetables B can be hermetically packaged and stored by the film 8 as described above.

  In any case, by folding the flaps 5 connected to the end edges on both ends in the longitudinal direction of the storage recesses 1 of the packaging materials A and A ′, storing them in the outer box C and setting them in the outer box C, Since the flap 5 elastically contacts the inner surface of the side plate of the outer box C, the flap 5 serves as a cushion between the outer box C and a dimensional error between the packaging material A and the outer box C. Can be absorbed, the looseness of the packaging material A in the outer box C and backlash can be prevented, and the packaging can be performed with good stability.

  And in the packaged body packed as described above, the stored root vegetables B has a concentric semicircular shape corresponding to the storage recess 1 in the storage recess 1 in the lower part of the substantially half circumference. Therefore, it is supported with stability at a plurality of locations from below and from the left and right sides. When the packaging material A 'having the same shape is covered as an upper lid, the upper half of the root vegetable B can be supported in the same manner as described above. Moreover, since the said storage recessed part 1 has comprised the bellows shape in the longitudinal direction with the said protruding item | line rib 3, it can easily follow the change of the shape and magnitude | size of root vegetables B, and natural root vegetables B with a variation naturally. Can be stored without problems and can be held stably.

  In addition, the flap 5 is provided with a buffering convex portion 7 that elastically abuts against the end wall portion 1a of each storage concave portion 1 in the bent state. It acts as an elastic support by abutting against the wall 1a, and the impact due to the lateral drop in the longitudinal direction of the storage concave portion can be absorbed and relaxed by the elastic deformation of the convex portion 7, so that the stored root vegetables B A good buffering effect can be exhibited.

  Therefore, in the package using the packaging material A of the present invention, the stored root vegetables B are less likely to roll and not only in the bottom direction, but also in the lateral direction, particularly along the longitudinal direction of the root vegetables. Excellent buffer protection effect against impacts caused by directional or oblique drops. Moreover, when the packaging material A of the same shape is used in combination as an upper lid as described above, the shock-absorbing property against a reverse top-down fall is also good.

  In addition, moisture such as dew condensation water generated on the surface of the root vegetables B flows into the concave strip portion 4 between the convex ribs 3, 3, so that it remains at the contact portion between the root vegetables B and the convex rib 3. If the ribs 3 have a triangular shape with a rounded top, the contact area with the root vegetable B is small, and the root vegetable B is difficult to be kept in a wet contact state. Damage from the contact portion of the class B can be suppressed. In addition, the moisture accumulated in the concave stripe portion 4 between the convex ribs 3 and 3 can prevent the inside of the storage concave portion 1 from being dried, and the moisture retention necessary for maintaining the freshness of the root vegetables B can be ensured.

  In particular, in a package in which the root vegetables are hermetically packaged and stored with a film, in addition to the effects of the packaging material, the effects of keeping the root vegetables fresh and preventing discoloration can be enhanced.

  The root vegetables packaging material of the present invention can be suitably used for shipping, transporting and storing root vegetables in a packaged state in which the length of a long bean or lotus root is longer than the diameter of the thickness.

It is a plane which shows the Example of the packaging material of root vegetables concerning this invention. It is a one part enlarged perspective view of a packaging material same as the above. It is an expanded sectional view of the III-III line of FIG. It is an expanded sectional view of the IV-IV line of FIG. (A) It is explanatory drawing of each partition part of (b). It is sectional drawing of the use condition which set this invention to the outer case. It is a schematic plan view which shows the other example of the use condition of this invention. It is sectional drawing same as the above. It is a partial cross section figure which shows another use condition.

Explanation of symbols

  A, A '... packaging material, B ... root vegetables, C ... outer box, 1 ... storage recess, 1a ... end wall part, 2 ... partition wall part, 2a ... upper end surface, 3 ... convex rib, 3a ... top part, 4 ... concave groove part, 5 ... flap, 6 ... bent part, 7 ... convex part.

Claims (6)

A root vegetable packaging material, which is integrally formed from a thermoplastic resin sheet, and is formed by arranging a plurality of storage recesses in a semicircular cross-sectional shape and a long groove shape for storing the root vegetables. The concave portion has a bellows shape in the longitudinal direction by the formation of concentric semicircular convex ribs that bulge inwardly at predetermined intervals in the longitudinal direction, and the convex strips of both adjacent storage concave portions. The ribs are in a staggered position, the partition between the storage recesses has a wave shape on the upper end surface, and abuts at the end edges of the storage recesses in the longitudinal direction at the time of storage in the outer box And a flap for buffering that can be in contact with the end wall portion at a portion facing the longitudinal end wall portion of the storage recess in the bent state. A packaging material for root vegetables characterized by comprising a portion. The cushioning convex portion is provided so as to be able to elastically contact the longitudinal end wall portion of the storage concave portion when the flap is bent at a right angle or near a right angle with respect to the flat surface portion of the seat. The packaging material of root vegetables as described in 1. The packaging material for root vegetables according to claim 1 or 2, wherein the convex portion has a bulging shape toward the back side and is elastically deformable when abutting against the end wall portion. The packaging material for root vegetables according to any one of claims 1 to 3 , wherein the protruding rib has a triangular cross section with a rounded top, and the upper end surface of the partition wall has a triangular wave shape. The packaging material for root vegetables according to any one of claims 1 to 4, wherein the thermoplastic resin sheet is a foam sheet. A package of root vegetables using the packaging material according to any one of claims 1 to 5 , wherein the packaging material is bent on the back side on the flaps on both ends in the longitudinal direction of the storage recess. A package of root vegetables, which is housed in an outer box for exterior packaging, and is packaged by storing the root vegetables hermetically sealed with a film in each storage recess of the packaging material.

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