JP2011073734A - Fruit-housing film member and fruit-housing container using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fruit-housing film member having the gas permeability and a fruit-housing container using the same. <P>SOLUTION: A molding die with a recessed die for forming a fruit-housing recess being formed thereon is placed opposite to a flexible, thermoplastic synthetic resin-made film, the film is subjected to the vacuum suction via small through holes formed in the recessed die, a flexible fruit-housing recess having the shape along the recessed die is formed on one surface of the thin film by the plastic deformation, and the fruit-housing thin film is formed thereby. The fruit-housing thin film is stretched over an opening peripheral edge of an outer peripheral frame in a horizontally extended state. A fruit-housing film member is formed by joining the outer peripheral part of the thin film with the outer peripheral frame. Small gas permeable holes are formed in parts corresponding to the small through holes in the fruit-housing recess by the vacuum suction downward of the forming die. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is used for wrapping fruits such as figs in a suspended state, and has a breathable fruit storage film member, a fruit storage container using the same, and a fruit storage thin film used for a fruit storage film member. An object is to provide a manufacturing method.

  Conventionally, by forming a plurality of fruit storage recesses through a flat portion on the surface of a flexible thin film, stretching the film on a hard tray, and storing the fruits in a suspended state in these fruit storage recesses, A fruit storage tray having a fruit damage prevention function has been proposed (Patent Document 1).

  In such a tray, when the fruit is stored in the fruit storage recess, the resin film is coated on the lower half of the fruit, and in this state, the bottom surface of the stored fruit is supported in a suspended state without contacting the bottom surface of the tray. It was.

  Moreover, the thin film which comprises the said fruit accommodation recessed part is stretched | tensioned to a cover body, the said half body is fitted on the said fruit storage tray, The said upper half part is supported by the said recessed part, thereby There has also been proposed a tray that supports the top and bottom of a fruit in a suspended state in each of the fruit storage recesses of a flexible thin film (Patent Document 2).

JP2008-81195A JP 2009-96547 A

  By the way, since the fruit still breathes after harvesting, in the state where the upper half or the lower half is covered with the above film, the film exhausted by the gas discharged from the fruit or the moisture contained in the fruit evaporates. There may be cloudiness or water droplets on the inner surface. If the film is cloudy or has water droplets, the quality of the contents may be deteriorated.

  For this reason, it has been desired to give the film breathability without impairing the fruit suspension function in the fruit storage recess of the thin film.

  In order to make the thin film breathable, it may be possible to manually form ventilation holes in the fruit storage recesses of the thin film after molding, but many ventilation holes are manually formed in the many fruit storage recesses. It was inefficient to form.

  The present invention has been made in view of the above-described conventional problems, and is a fruit storage film member for suspending and storing a fruit, and has a breathable fruit storage film member and a fruit storage container using the same, and It aims at providing the efficient manufacturing method of the fruit accommodation thin film which has air permeability.

In order to achieve the above object, the present invention
First, a thin mold having a concave portion for forming a fruit storage recess is opposed to one surface of a flexible thermoplastic synthetic resin thin film, and the thin film is inserted through a small through-hole formed in the concave mold. The film is vacuum-sucked below the mold, and a soft fruit storage recess having a shape along the concave mold is formed on one surface of the thin film through a flat surface by plastic deformation, whereby a fruit storage thin film for storing fruit is obtained. And forming an annular peripheral frame having an upper and lower opening with a side plate having a predetermined vertical width, and stretching the thin film for storing fruit in the horizontal direction around one opening periphery of the outer peripheral frame. The fruit storage film member is formed by joining the outer peripheral part of the film and the outer peripheral frame, and the bottom part of the fruit storage concave part is positioned above the lower end position of the outer peripheral frame, so that the fruit stored in the concave part is obtained. Is formed so as to be supported in a suspended state by the recess, and a small ventilation hole is formed through the fruit storage recess by a vacuum suction to the lower side of the molding die at a position corresponding to the small through hole. It is comprised by the fruit storage film member characterized by being a thing.

  The outer peripheral part of the film can be constituted by an engagement bent part (1b) provided on the film, but can also be constituted by bending the outer peripheral part (outer peripheral part) of the film to the outer peripheral frame side. . The bonding between the outer peripheral portion of the film and the outer peripheral frame can be constituted by, for example, bonding in a spot shape with a hot melt adhesive. Vacuum suction to the lower side of the molding die can be realized, for example, by sucking air toward the lower side of the molding die using a vacuum suction device provided below the molding die. If comprised in this way, a small ventilation hole can be formed with the formation of a fruit accommodation recessed part in a thermoplastic synthetic resin thin film with the method of vacuum suction, and it is small efficiently, without forming only a small ventilation hole manually. Vent holes can be formed. In addition, the small ventilation holes can impart air permeability to the film, and can prevent deterioration of quality of fruits and the like.

  Second, a state in which the fruit storage film member is mounted so as to close the top opening to a top opening-bottomed box having a bottom plate and a side plate, and the fruit is stored in the fruit storage recess of the fruit storage thin film. The fruit storage using the fruit storage film member according to claim 1, wherein a space is interposed between the bottom plate of the top-opened bottomed box and the fruit storage recess. Consists of containers.

  If comprised in this way, a fruit can be supported in a suspended state in a flexible fruit accommodation recessed part, and while being able to prevent damage to a fruit, air permeability can be maintained with the small ventilation hole of a thin film.

  3rdly, the said fruit accommodation recessed part of the said fruit accommodation film member is formed in multiple numbers via the flat surface of the said fruit accommodation thin film, The said thin film between the said adjacent fruit accommodation recessed parts is formed in the bottom plate of the said box. It comprises a support projection for supporting the flat surface of the film from the back surface side.

  With this configuration, a plurality of fruits can be supported in a suspended state in a plurality of flexible fruit storage recesses to prevent fruit damage, and air permeability is maintained by the small vents of the fruit storage thin film. can do.

  Fourth, a plurality of small through holes formed in the concave part for forming the fruit storage recess are formed, and a plurality of small ventilation holes in the fruit storage recess of the fruit storage thin film are also formed corresponding to the small through holes. It is comprised by the fruit accommodation film member of the said 1st characterized by the above-mentioned.

  If comprised in this way, the fruit storage film member which has sufficient air permeability by the some small ventilation hole is realizable.

  Fifth, the fruit storage film member in which the outer peripheral frame is formed in a square shape, wherein a substantially central portion in the longitudinal direction of the outer peripheral frame in a state where the fruit storage thin film is stretched can be bent in an opposing direction. It is comprised by the fruit accommodation film member of the said 1st or 4 characterized by the above-mentioned.

  If comprised in this way, a fruit storage container can be comprised easily by mounting | wearing with an upper surface opening bottomed box body by bending a fruit storage film member.

  Sixth, a plurality of small through holes formed in the concave part for forming the fruit storage recesses are formed, and a plurality of small ventilation holes of the fruit storage recesses of the fruit storage thin film are also formed corresponding to the small through holes. It is comprised by the fruit storage container as described in the said 2nd or 3 characterized by the above-mentioned.

  If comprised in this way, the fruit storage container which has sufficient air permeability with a some small ventilation hole is realizable.

  Seventh, a plurality of fruit storage recess forming concave molds for forming the fruit storage recesses on the flat surface are formed, and a plurality of small vents are formed penetrating downward into each of the concave molds. A fruit storage film mold is formed by providing a small through hole, a thermoplastic synthetic resin thin film is disposed above the flat surface of the fruit storage film mold, and the thermoplastic synthetic resin thin film is heated by a heater. The thermoplastic synthetic resin thin film thus softened is brought into contact with the flat surface, and the film is adsorbed in the concave mold by vacuum suction from below the mold through the small through hole. A method for forming a fruit-containing thin film by plastic deformation of a flexible fruit-receiving recess corresponding to the concave mold, wherein a plurality of the small through holes are formed in the concave mold, After the thin film is adsorbed in the concave mold by air suction and the fruit storage recess is formed by plastic deformation, the vacuum suction is continued to correspond to the small through hole in the fruit storage recess. It is comprised by the manufacturing method of the fruit accommodation thin film characterized by forming the several small ventilation hole which penetrates the said thin film in a position.

  According to such a manufacturing method, a flexible fruit storage recess having a small ventilation hole can be very efficiently formed in the fruit storage thin film, and there is no need to manually form a ventilation hole after forming the thin film. .

  As described above, the present invention can form a small ventilation hole in the fruit storage thin film together with the formation of the fruit storage recess, and can efficiently form the small ventilation hole without manually forming the small ventilation hole. A fruit storage film member can be realized.

  Moreover, the small ventilation hole formed in the fruit storage recessed part can make the fruit storage thin film breathable, and a fruit storage film member capable of preventing quality deterioration of fruits and the like and a fruit storage container using the same Can be realized.

  In addition, a fruit storage container that can support a fruit in a suspended state in a flexible fruit storage recess, prevent damage to the fruit, and maintain air permeability by a small vent of the fruit storage thin film. Can be realized.

  Moreover, the fruit storage film member and fruit storage container which have sufficient air permeability by a some small through-hole are realizable.

  In addition, according to the method for producing a fruit storage thin film of the present invention, a flexible fruit storage recess having a small air hole can be formed in the fruit storage thin film very efficiently. It is not necessary to form a vent hole. Furthermore, a good-shaped small ventilation hole which does not damage the fruit can be formed.

It is a disassembled perspective view of the fruit storage film member which concerns on this invention. It is a perspective view of a member same as the above. The manufacturing process including the cross-sectional view of the mold for manufacturing the member is shown, (a) is a heating process of a thermoplastic synthetic resin film, (b) is a vacuum suction process of the film, and (c) is a film of the same. The separation process is shown. (A) is a partially expanded sectional view of the shaping | molding die of the same member, (b) is a partially enlarged sectional view of the state which removed the fruit storage film from the shaping | molding die of the same member. It is a disassembled perspective view of a fruit storage container. (A) is an exploded side sectional view of the fruit storage container, (b) is a side sectional view of the same container. It is a perspective view of a container same as the above. The top view of the shaping | molding die for shape | molding a member same as the above, (b) is side sectional drawing of a shaping | molding die same as the above. It is sectional drawing of the small ventilation hole formed in a fruit accommodation thin film.

  Hereinafter, according to an accompanying drawing, embodiment of fruit storage film member 10 (Drawing 2) and fruit storage container 12 (Drawing 7) concerning the present invention is described in detail. In the following description, the term “fruit” such as the fruit storage film member 10 and the fruit storage container 12 is used. However, what is stored is not limited to fruits, and includes vegetables that breathe even after harvesting. Moreover, in the following description, the film in which the fruit storage recesses 3 are formed is “fruit storage thin film 1” (FIG. 1), and the film with the fruit storage thin film 1 attached to the outer peripheral frame 2 is “fruit storage film”. The member 10 ”(FIG. 2) and the fruit storage film member 10 mounted on the top open bottomed box 8 are referred to as“ fruit storage container 12 ”(FIG. 7).

  FIG. 1 shows a fruit housing thin film 1 made of a thermoplastic synthetic resin thin film of the same film member and an outer peripheral frame 2 on which the thin film 1 is covered. The fruit storage thin film 1 is formed of a thin and flexible thermoplastic synthetic resin thin film, and a plurality of flexible fruit storage recesses 3 are formed on the flat surface 1a through the flat surface 1a by plastic deformation. In addition, a flexible engaging bent portion 1b is integrally formed as an outer peripheral portion around the flat surface 1a in a direction substantially orthogonal to the flat surface 1a.

  As shown in FIG. 2, the fruit-containing thin film 1 has one opening so as to close the upper surface opening 2a, which is one opening of the outer peripheral frame 2, with the portion of the bent portion 1b for engagement. 2a of the bent portion 1b for engagement of the thin film 1 in a stretched state (a state in which the flat surface 1a which is one surface of the thin film 1 is slightly pulled (stretched) in the horizontal and vertical directions) The plurality of adhesive portions P are joined (adhered) to the outer peripheral frame 2 with a hot melt adhesive or the like.

  The engaging bent portion 1b is provided over the entire periphery of one surface of the fruit-containing thin film 1, and is integrally formed by plastic deformation in a direction substantially orthogonal to the flat surface 1a. It is formed.

  The engaging bent portion 1b as the outer peripheral portion of the fruit-containing thin film 1 forms the thin film 1 wider than the outer peripheral frame 2 (the upper surface of the molding die 6 at the time of molding). The outer peripheral frame 2 is directed to the upper surface opening 2a, the outer peripheral portion (outer peripheral portion) is bent toward the outer peripheral frame 2, and a plurality of portions of the bent portion and the outer peripheral frame 2 are bonded with a hot melt adhesive or the like. You may comprise by joining.

  The said fruit accommodation thin film 1 is comprised by the thermoplastic synthetic resin thin film. This thermoplastic synthetic resin thin film is a very thin flexible film having a thickness of 10 μm to 300 μm, and the material thereof is a thin film transparent, translucent or opaque thermoplastic film such as polyethylene, polypropylene, polyurethane, polystyrene, etc. Is used. In the following embodiments, the thickness of the fruit housing thin film 1 is the same as described above unless otherwise specified. When figs are stored as fruits as in this embodiment, the fruit storage thin film has a thickness of, for example, 90 μm.

  As shown in FIG. 1, the thin film 1 has a fruit storage recess 3 having a shape (the shape of the lower half of the fig) in which the lower half of the fruit (the fig in this case) fits vertically and horizontally on the flat surface 1a. A plurality of layers are formed by plastic deformation by vacuum suction through an intermediate (between fruit storage recesses 3) flat surface 1a '. In the embodiment of FIG. 1, four fruit storage recesses 3 are formed in three rows (12 in total), but the number and shape of the recesses are arbitrary, and can be changed depending on the shape and number of fruits stored. is there.

  A plurality of small ventilation holes 3 a for ventilation (diameter of about 0.8 mm in this embodiment) are formed through the film 1 in the fruit storage recesses 3. The fruit storage recess 3 is made to oppose a molding die 6 in which a recess 4 for forming a fruit storage recess is formed in opposition to a thermoplastic synthetic resin thin film 1 ′ for forming a fruit storage thin film 1 (see FIG. 3A). ), Vacuum suction is performed below the mold 6 through a plurality of small through-holes 5 (in this embodiment, a diameter of about 1.5 mm) formed in the concave mold 4, and a flat surface 1a, A flexible fruit storage recess 3 having a shape along the concave mold 4 is formed by plastic deformation via 1a ′. The small vents 3 a in the fruit storage recess 3 are formed by penetrating a plurality of small vents 3 a at locations corresponding to the small through holes 5 by vacuum suction downward of the mold 6. It is.

  Such a fruit storage thin film 1 can be formed by the vacuum forming method shown in FIG. The said fruit accommodation thin film 1 is shape | molded by the fruit accommodation film shaping | molding die (molding die) 6 (refer FIG. 3). In the molding die 6, a plurality of fruit storage recess forming concave molds 4 are formed in the upper flat surface 6 a via the flat surface 6 a, and a plurality of suction small through holes 5 are molded inside the concave mold 4. It has a substantially rectangular parallelepiped shape formed so as to penetrate downward in the mold 6 (see FIG. 8). The mold 6 is placed horizontally on the mesh plate 7. The shape of the concave mold 4 corresponds to the lower half of the fig (see FIG. 8).

  Thereafter, a thermoplastic synthetic resin thin film 1 ′ for forming the fruit-containing thin film 1 is disposed facing the flat surface 6 a of the mold 6 and heated by a heater H for several seconds to form the film 1 ′. Soften.

  Then, the thermoplastic synthetic resin thin film 1 ′ softened by the heater H is lowered in the direction of the molding die 6, and its film surface is brought into contact with the flat surface (upper surface) 6 a of the molding die 6 (FIG. 3 ( a) State of two-dot chain line of thermoplastic synthetic resin thin film 1 '). Next, with a vacuum suction device (not shown), air is sucked in the directions of arrows a and a ′ (downward) below the mold 6 and below the mesh plate 7. Then, vacuum suction (arrow a) is performed below the mold 6 through the small through-hole 5 for suction, and vacuum suction (arrow a ′) is performed below the mesh plate 7 around the mold 6. 1 can form a flexible thermoplastic synthetic resin thin film 1 ′ (a film after molding is referred to as a fruit-containing thin film 1) having the flexible fruit-receiving recesses 3 and the flexible engaging bent portions 1 b shown in FIG.

  When the vacuum suction is performed (suction time is about 0.1 seconds, for example), air is sucked from the plurality of small through holes 5 in the direction of the arrow a, so that the thermoplasticity is contained in the concave part 4 for forming the fruit storage recess. The synthetic resin thin film 1 ′ is adsorbed, and the fruit storage recess 3 having a shape along the concave shape in the concave mold 4 is formed on the thin film 1 ′ by plastic deformation (state shown in FIG. 3B).

  Further, since vacuum suction is also performed at the outer peripheral portion of the mold 6 toward the lower side of the mesh plate 7 (arrow a ′), from the flat surface 6a on the outer periphery of the mold 6 of the thermoplastic synthetic resin thin film 1 ′. The outside (surrounding margin) is adsorbed to the outer surface of the mold 6 so as to bend downward along the side surface of the mold 6, and the engagement bent portion 1 b is plastically deformed around the flat surface 1 a of the film 1 ′. It is formed (see FIG. 3B). At this time, the small ventilation hole 3a is not yet opened in the fruit storage recess 3.

  Then, after the fruit storage recess 3 is formed in the thermoplastic synthetic resin thin film 1 ′, if the vacuum suction is further continued (for example, after the vacuum suction of 0.1 seconds, about 0.5 second is further added). In the thermoplastic synthetic resin thin film 1 ′ adsorbed in the concave mold 4, the thin film 1 ′ corresponding to the small through-hole 5 in the concave mold 4 It is sucked into the through hole 5 (see FIG. 4 (a)) and penetrates so that the portion of the film 1 corresponding to the small through hole 5 is sucked downward beyond the limit of plastic deformation. A small vent 3a is formed through (see FIG. 4B). As a result, a plurality of small ventilation holes 3 a as shown in FIG. 1 are formed through the fruit storage recess 3. In the present embodiment, since 17 small through holes 5 are formed in each concave mold 4 of the mold 6 (see FIG. 8), the fruit storage recess 3 of the thermoplastic synthetic resin thin film 1 is also formed. Correspondingly, 17 small ventilation holes 3a are formed. The vacuum suction duration is not limited to the above time, and can be changed according to the molding conditions such as the thickness of the film, and the good-shaped small vent 3a can be formed by varying the length as necessary. it can.

  As described above, the small vent 3a is formed in all the fruit storage recesses 3 by maintaining the vacuum suction operation after the fruit storage recesses 3 are formed by plastic deformation in the molding process of the fruit storage recesses 3. Since it is generated at substantially the same time, the small vent 3a can be generated very efficiently.

  Further, since the small ventilation hole 3a is generated, the small ventilation hole 3a is formed through the portion corresponding to the small through hole 5 by the vacuum suction to the lower side of the molding die 6, so that FIG. As shown in FIG. 4, a downward burr 3a ′ may be formed around the small through hole 3a. However, since such a burr 3a 'is formed downward from the bottom of the fruit storage recess 3, when the fruit is stored in the fruit storage recess 3, the fruit is not damaged and the fruit is not damaged. Have no effect. Further, since the burr 3a 'remains in the small vent 3a, the shape retaining property of the small vent 3a is maintained, and the air permeability of the small vent 3a is not impaired even if the film 1 is flexibly deformed. Has an effect. Further, as shown in FIG. 9, since the small vent 3a is formed by downward vacuum suction, the opening peripheral edge 3 ′ of one small vent 3a has a downward smooth surface (downward curved surface) 3. ”And the sharp notch edge or puncture edge as in the case of being opened by piercing with a blade is not formed, so that it has excellent cosmetic properties when viewed from above the recess 3, and in the vicinity of the small through hole 3 a, the notch edge The edges and puncture edges do not cause scratches on the stored fruit, and the fruit is not damaged around the small through-hole 3a.

  After the small vents 3a are formed through all the fruit storage recesses 3, the thermoplastic synthetic resin thin film (fruit storage thin film) 1 is detached from the mold 6 (see FIG. 3C). At this time, since the horizontal portion 1b 'on the outer periphery of the engaging bent portion 1b is not necessary, the horizontal portion 1b' is cut off at the position c.

  The fruit storage thin film 1 molded by such a method is substantially orthogonal to the flat surface 1a in which a plurality of flexible fruit storage recesses 3 are formed by plastic deformation and the entire periphery of the periphery of the flat surface 1a. A bending portion for engagement 1b that is flexible in the direction (downward in FIG. 1) is formed integrally with the flat surface 1a by plastic deformation.

  The fruit-containing thin film 1 maintains the shape as shown in FIG. 1 after being molded, but since the thickness is extremely thin, it has overall flexibility and is folded in two or three. Can be stored compactly, for example, when folded up and down, and when the folding portion 1b for engagement and the fruit storage recess 3 are compressed in an indefinite shape in the vertical direction, a large number of films 1 are stacked. Can be stored and transported without being bulky. In addition, since the said recessed part 3 etc. are plastically deformed even after compressing to an indefinite shape, the shape of the original fruit storage recessed part 3 and the bending part 1b for engagement is maintained, and it is nothing regarding storage of articles | goods. There is no hindrance.

  The outer peripheral frame 2 (see FIG. 1) is formed by connecting cardboards having a constant width (vertical width) or side plates 2b made of synthetic resin in an annular shape, for example, a rectangular shape.

  The thing shown in FIG. 2 forms the fruit accommodation film member 10 by covering the outer periphery frame 2 with the bending part 1b for engagement of the fruit accommodation thin film 1 comprised as mentioned above. By covering the thin film 1 on the outer peripheral frame 2, the flat surface 1a of the thin film 1 is pulled (stretched) in the direction of the four sides (horizontal direction) of the thin film 1, and the flat surface 1a is tightly stretched. It becomes a set state. And the outer periphery frame 2 and the said film 1 are joined by adhere | attaching the adhesion part P of the bending part 1b for engagement of the said film 1 to the outer periphery frame 2 with a hot-melt-adhesive etc., thereby, a fruit storage film member 10 is formed.

  As shown in FIG. 1, when the outer peripheral frame 2 is formed in a square shape (rectangular in the case of FIG. 1), the longitudinal side plate 2b of the outer peripheral frame 2 in a state where the fruit storage thin film 1 is stretched. A fold groove is provided in a substantially central portion, and the fold groove can be bent in the opposite direction (see FIG. 5). If comprised in this way, fruit storage film member 10 itself can be folded and stored compactly, it can improve the loading efficiency at the time of transportation, and also when mounting in the top open bottomed box 8, By bending the central portion of the longitudinal side plate 2b in the opposite direction, it can be easily mounted on the box 8.

  The depth of the fruit storage recess 3 is formed to be about ½ of the height of the side plate 2 b of the outer peripheral frame 2, and even when the outer peripheral frame 2 is attached to the box 8, A space S is formed between the box bottom plate 8a (see FIG. 6B).

  Reference numeral 8 denotes a rectangular parallelepiped box (top-opened bottomed box) having a top-opening bottomed box shape (see FIG. 5), and is formed of cardboard. The box 8 is composed of a bottom plate 8a and side plates 8b that stand in four directions. Upright plates 9 and 9 are provided in two rows at the center along the longitudinal direction of the box 8, and the two rows of upright plates. 9 and 9 are provided with upright plates 9 'orthogonal to the upright plates 9 and 9, respectively. On the upright plates 9, 9, upward support projections 9a are formed to project at three locations at regular intervals in the longitudinal direction, and upward at two regular intervals in the longitudinal direction of the upright plate 9 '. A support protrusion 9b is formed to protrude. The support protrusions 9a and 9a at the center of the upright plates 9 and 9 and the support protrusions 9b and 9b intersect with each other in an orthogonal state to form integral support protrusions 9c and 9c.

  When the fruit storage film member 10 is stored and placed in the box 8, the support protrusions 9 a and 9 c are such that the upper ends of the support protrusions 9 a and 9 c are the back surfaces of the flat surface 1 a ′ of the fruit storage thin film 1. It contacts the side, thereby supporting the thin film 1 and realizing support in a suspended state of the fruit 11 stored in the fruit storage recess 3 (FIG. 6B).

  That is, the support projections 9a and 9c of the upright plate 9 support the back surface of the flat surface 1a 'of the film 1 when the fruit storage film member 10 is mounted on the box 8, and the flat surface 1a of the film 1 This prevents the downward bending (sagging) of '(see FIG. 6B). Therefore, the upper surface of each of the support protrusions 9a and 9c is configured to be positioned on the flat surface 1a 'between the fruit storage recesses 3. The upright piece 9 may be provided with a notch 9 ″ having the same shape in the bottom plate 8a (see the two-dot chain line in FIG. 5), formed in a standing manner, and mounted with a separately formed upright piece 9 ′. The bottom plate 8a may be formed with all the standing pieces 9 and 9 'as separate parts without providing an opening.When the standing piece 9 is of a standing type, the standing piece 9 is raised. Since the opening by the notch 9 ″ is formed in the bottom plate 8a, the air permeability as the fruit storage container 12 can be further improved.

  Since the fruit storage film member 10 of this invention is comprised as mentioned above, in order to comprise the said member 10, the folding part 1b for engagement of the fruit storage thin film 1 is covered on the outer periphery frame 2, In a state where the flat surface 1a is stretched in the horizontal and vertical directions, a plurality of the bent portions 1b (bonding portions P) of the engaging bent portions 1b and the outer peripheral frame 2 are bonded (bonded) with a hot melt adhesive. Thereafter, as shown in FIG. 5, the box 8 is closed so that the upper surface opening 8c of the box 8 is closed in a state where the substantially central portion of the longitudinal side plate 2b of the outer peripheral frame 2 of the fruit storage film member 10 is folded inward. What is necessary is just to form the fruit storage container 12 by installing in the body 8 (refer FIG.5, FIG.6, FIG.7). Even if the fruit storage film member 10 is bent as described above, the fruit storage thin film 1 is very thin and easily deformed. If the member 10 is placed in the box 8 and released, the outer periphery The frame 2 is elastically restored to a rectangular shape, and the fruit storage thin film 1 is also returned to the stretched state to form the fruit storage container 12 shown in FIG. At this time, since both end portions of the upright piece 9 ′ are located in the vicinity of the bent portion of the longitudinal side plate 2b of the outer peripheral frame 2, the inside of the bent portion of the longitudinal side plate 2b is located on the upright piece 9 ′. Supported by both ends, the rectangular state of the outer peripheral frame 2 is maintained (FIG. 6B).

  At this time, the outer peripheral frame 2 of the fruit storage film member 10 is located inside the side plate 8b of the box 8, and the film member 10 is stored inside the box 8 (FIG. 6B). In addition, the outer dimension of the outer peripheral frame 2 is formed slightly smaller than the area of the upper surface opening 8c of the box 8, and when the fruit storage film member 10 is mounted in the box 8, the film member The flat surface 1a of the ten fruit storage films 1 is configured to be positioned over the entire opening 8c so as to close the upper surface opening 8c of the box 8 (see FIG. 7).

  When the fruit storage film member 10 is stored and placed in the box 8, the flat surface 1 a of the thin film 1 is positioned at a lower level than the upper edge 8 d of the box 8, thereby storing the fruit. When the fruit 11 is accommodated in the recessed part 3, it is comprised so that the upper part of the fruit 11 may not be located above the said upper edge 8d (FIG.6 (b)).

  Thereafter, in a state where the fruit storage film member 10 is attached to the box 8, the fruit 11 (FIG. 6 in this embodiment) may be stored in each fruit storage recess 3 of the flat surface 1a of the film 1 (FIG. 6B). )reference).

  When the fruit storage film member 10 is mounted in the box 8, the lower part of the outer peripheral frame 2 is placed on the box bottom plate 8a, and the lower part of the fruit storage recess 3 of the thin film 1 and the box bottom plate 8a. A space S is formed between the flat film 1 and the flat surface 1a of the thin film 1 is positioned at a lower level than the position of the upper edge 8d of the box 8 (FIG. 6B). FIG. 7).

  Accordingly, when the fruit 11 is stored in the fruit storage recess 3, the thin film 1 in the flexible fruit storage recess 3 adheres to the surface of the lower half of the fruit 11 as shown in FIG. 6 (b). The fruit storage recess 3 and the bottom plate 8a of the box 8 have a space S. Therefore, the fruit 11 is stored in the thin film 1 in a suspended state. In addition, since the fruit 11 is stored, there is a slight space between the upper part of the fruit 11 and the box upper edge 8d, so that the upper opening 8c of the box 8 has a flat lid or the like (not shown). It can be closed with.

  At this time, since the engaging bent portion 1b of the thin film 1 is adhered to the outer peripheral frame 2, even if the fruit 11 is stored in all the fruit storing recesses 3, the thin film 1 is lowered by its weight. There is no slippage. Further, since the support protrusions 9a and 9c are present in the central portion of the box 8, when the fruit 11 is stored, the back surface of the central portion in the longitudinal direction of the flat surface 1a is supported by the support protrusions 9a and 9c. 11 is supported in a suspended state by film surfaces (flat surfaces 1a, 1a ′) that engage with the upper edge 2a ′ of the outer peripheral frame 2 and the support protrusions 9a, 9c.

  In the suspended state of the fruit 11, a plurality of small ventilation holes 3a are formed through the fruit storage recesses 3, so that gas discharged from the fruit or moisture contained in the fruit is discharged from the ventilation holes 3a. Is done. Therefore, the fruit storage thin film 1 is clouded or moisture is accumulated in the fruit storage recess 3, so that the quality of the fruit is not deteriorated, and the product value can be prevented from being lowered.

  In addition, when the flexible fruit storage recesses 3 are formed by the vacuum forming method, a plurality of small ventilation holes 3a can be formed in each fruit storage recess 3 together with the fruit storage recesses 3, and the ventilation holes can be formed manually. Therefore, it is possible to form the small ventilation hole very efficiently.

  Moreover, the fruit storage container 12 packaged in this way is stored and transported on a truck or the like alone or stacked in the vertical direction. At this time, since each fruit 11 is wrapped in a suspended state by the fruit-holding thin film 1 as described above, it does not come into contact with or collide with any place even if vibration or the like occurs during transportation. Can be transported to.

  The connection between the fruit-containing thin film 1 and the outer peripheral frame 2 is not limited to the hot melt adhesive, but an engaging protrusion is provided on the outer peripheral frame, and the engaging bent portion of the film 1 is engaged with the engaging protrusion. It can also join by doing.

  The outer peripheral frame 2 can be made of a plastic cardboard board, cardboard, etc. in addition to the cardboard board.

  As described above, the present invention can form the small vents 3a together with the formation of the fruit storage recesses 3 in the thermoplastic synthetic resin thin film 1 ′ by the vacuum forming method. The fruit-containing thin film 1 having the small vents 3a can be efficiently formed without manually forming only the small air holes 3a.

  Moreover, the small ventilation hole 3a formed in the fruit accommodation recessed part 3 can give air permeability to the fruit accommodation film 1, and can prevent quality degradation, such as a fruit, effectively.

  Further, the fruit can be supported in a suspended state in the flexible fruit storage recess 3 so that the fruit can be prevented from being damaged, and the air permeability can be maintained by the small vent 3a of the fruit storage thin film 1.

  Moreover, the fruit storage film member 10 and the fruit storage container 12 which have sufficient air permeability by the some small through-hole 3a are realizable.

  Moreover, the flexible fruit accommodation recessed part 3 which has the small ventilation hole 3a in the fruit accommodation thin film 1 can be formed very efficiently, and it is not necessary to form a ventilation hole manually after the fruit accommodation thin film 1 shaping | molding. . Further, since the opening peripheral edge 3 'of the small vent 3a is formed by a smooth surface (curved surface) 3 ", the stored fruit is not damaged near the small vent 3a.

  Further, the fruit can be buffer-wrapped in a suspended state by the flexible fruit-storing thin film 1, and a fruit storage container that can reliably buffer the fruit or the like can be realized.

  In addition, since the fruit storage thin film 1 itself has flexibility as a whole even after plastic deformation, it can be stored compactly by folding or folding the film 1 itself.

  The fruit storage film member and fruit storage container of the present invention are not limited to fruits, and can be widely used for packaging foods that breathe after harvest, such as vegetables. In addition, the small vents are cosmetic because the perimeter of the opening has a very smooth curved surface, and therefore, the small vents make a pictorial representation (for example, forming a star shape etc. with a plurality of small vents). Thus, a packaging film having a new design pattern can be formed. When configured in this way, it can be widely used not only for fruits and the like, but also for hanging packaging of general industrial products such as mobile phones.

1 Fruit storing thin film 1a, 1a 'Flat surface 1b Folding part for engagement (outer peripheral part)
1 'Thermoplastic synthetic resin thin film 2 Peripheral frame 2a Opening 3 Fruit storing recess 3a Small vent 4 Fruit storing recess forming concave 5 Small through hole 6 Molding die 8 Top opening bottomed box 8a Bottom plate 8b Side plate 8c Upper opening 10 Fruit storage film member 11 Fruit 12 Fruit storage containers 9a, 9b, 9c Support protrusion H Heater P Adhesion S Space

Claims (7)

A mold having a concave portion for forming a fruit storage recess is opposed to one surface of a flexible thermoplastic synthetic resin thin film, and the thin film is molded through a small through-hole formed in the recess. Vacuum sucking downward, forming a flexible fruit storage concave part of the shape along the concave mold through a flat surface on one surface of the thin film by plastic deformation, thereby forming a fruit storage thin film for storing fruit,
An upper and lower opening annular outer peripheral frame is formed by a side plate having a predetermined vertical width, and the fruit-containing thin film is stretched in a horizontally extending state on one opening peripheral edge of the outer peripheral frame, and the outer periphery of the thin film A fruit storage film member is formed by joining the part and the outer peripheral frame,
By forming the bottom of the fruit storage recess above the lower end position of the outer peripheral frame, the fruit stored in the recess can be supported in a suspended state by the recess,
And the fruit accommodation film member characterized by the small ventilation hole penetratingly formed in the location corresponding to the said small through-hole by the said vacuum suction to the said shaping | molding mold downward in the said fruit accommodation recessed part. Attach the fruit storage film member to close the top opening to the bottom opening box with a bottom plate and side plates,
In the state where the fruit is stored in the fruit storage recess of the fruit storage thin film, a space is interposed between the bottom plate of the top-opened bottomed box and the fruit storage recess. A fruit storage container using the fruit storage film member according to claim 1. A plurality of the fruit storage recesses of the fruit storage film member are formed through the flat surface of the fruit storage thin film,
The fruit storage according to claim 2, wherein the bottom plate of the box is provided with a support protrusion for supporting the flat surface of the thin film between the adjacent fruit storage recesses from the back side. container.   A plurality of small through holes formed in the concave part for forming the fruit storage concave part are formed, and a plurality of small ventilation holes in the fruit storage concave part of the fruit storage thin film are formed corresponding to the small through holes. The fruit storage film member according to claim 1, wherein   The fruit storage film member in which the outer peripheral frame is formed in a square shape, wherein a substantially central portion in the longitudinal direction of the outer peripheral frame in a state where the fruit storage thin film is stretched is configured to be foldable in an opposing direction. The fruit storage film member according to claim 1 or 4, wherein the fruit storage film member is provided.   A plurality of small through holes formed in the concave part for forming the fruit storage concave part are formed, and a plurality of small ventilation holes in the fruit storage concave part of the fruit storage thin film are formed corresponding to the small through holes. The fruit storage container according to claim 2, wherein the fruit storage container is a fruit storage container. A plurality of concave portions for forming fruit storage recesses for forming fruit storage recesses on a flat surface are formed, and a plurality of small through holes for forming small vent holes penetrating downward are formed inside each of the concave molds. By forming a fruit storage film mold,
Place the thermoplastic synthetic resin thin film above the flat surface of the fruit storage film mold,
The thermoplastic synthetic resin thin film is softened by heating with a heater,
The softened thermoplastic synthetic resin thin film is brought into contact with the flat surface, and vacuum suction is performed from below the mold through the small through-hole, thereby adsorbing the film into the concave mold to form the concave mold. A method for forming a fruit-containing thin film in which a corresponding flexible fruit-containing recess is formed by plastic deformation,
A plurality of the small through holes are formed in the concave mold,
After the thin film is adsorbed in the concave mold by the vacuum suction and the fruit storage recess is formed by plastic deformation, the vacuum suction is continued to correspond to the small through hole in the fruit storage recess. A method for producing a fruit-containing thin film, comprising: forming a plurality of small vents penetrating the thin film at positions where the thin film penetrates.

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