JP3293103B2 - Mainly plastic egg containers for business use - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic egg container mainly used for business use.

[0002]

2. Description of the Related Art A large amount of eggs necessary for cooking are transported to a school, a hospital, a hotel kitchen, a restaurant, and other places for providing food and drink, or eggs are provided at the place for providing food and drink. As a convenient plastic egg container for storing the egg, the present inventor has previously described Japanese Patent Application No. 11-29217.
No. 1 was proposed.

[0003]

However, as a result of intensive studies since then, it has been found that the above-mentioned prior invention still has the following problems.

[0004] That is, the above-mentioned prior application discloses at least one container body (A1) (A2) (A3) and one container body (A1) to (A3) which can be covered interchangeably. When storing eggs (E) in a number (for example, a total of 30 eggs) corresponding to one piece of the container body (A1), which is composed of the lid body (B), as apparent from FIG. Body (A
1) The cover (B) is directly covered with the cover (B) and fitted, and according to the increase of the eggs (E), the container bodies (A1) to (A)
In the case of using a plurality of (3), as is apparent from FIG. 23, adjacent container bodies (A) in which the eggs (E) are stored
1) to (A3) assembling into a stacked state in which the directions are changed so that the comrades are alternately and horizontally rotated by 90 degrees,
The lid (B) is also covered and fitted to the uppermost container body (A1), and in any case, the lid state is changed to a shrink wrapping of a separate heat-shrinkable plastic film (13) or a stretch. They are fixed and integrated by stretch packaging of a molded plastic film, and are used for transportation and storage.

[0005] Therefore, in order to use the invention of the prior application, it is necessary to prepare an expensive shrink wrapping machine or stretch wrapping machine, which is a plastic egg container for business use which is effective for food sanitation. Nevertheless, it is a bottleneck in its spread.

[0006] Further, since this egg container is a product formed by vacuum molding from a thin plastic sheet material, if shrink packaging or stretch packaging is performed in the above-mentioned covered state, forcible tightening tension accompanying the packaging is required. Under the force, the peripheral portions of the container bodies (A1) to (A3) and the lid (B) are incorrectly deformed so as to be wrinkled, or a positional deviation of the covered state or the stacked state is caused. This makes it difficult to look good in the packaged egg.

[0007] In addition, the egg (E) is completely sealed by the final shrink wrapping or stretch wrapping in the covered state, resulting in stuffiness of the egg (E), which is not suitable for storage in summer. is there.

[0008] In particular, if a stained or cracked egg is found after packaging, it is necessary to unwrap the package and repack it again, which is not only troublesome.
Therefore, the heat-shrinkable plastic film (13) for shrink wrapping and the stretch-type plastic film for stretch wrapping are discarded, and there is a problem that the material saving effect is poor.

[0009]

SUMMARY OF THE INVENTION The present invention is intended to further improve such problems. For this purpose, a separate and independent set of a container body and a lid thereof is formed of a thin transparent or transparent plate. An egg container vacuum-formed from a translucent thermoplastic sheet material into a square planar contour shape having substantially the same size as each other,

[0010] A pair of handle flanges are formed on two parallel sides of the container body so as to protrude by a predetermined band width,

In the intermediate region of the container body except for the handle flanges, a plurality of downwardly depressed egg storage recesses are formed by partitioning walls vertically and horizontally at right angles.

An intermediate partition convex wall is formed from the vertical and horizontal orthogonal portions of the partition grid wall, and a peripheral partition convex wall is formed from a portion where the partition grid wall intersects the four sides of the container body at right angles and from four corner portions of the container main body. , While each of the plurality of scattered distributions is raised upward, opposite to the egg storage recess,

[0013] A pair of handle flanges are formed on two parallel sides of the lid so as to protrude by a predetermined band width.

In the middle region of the lid except for the two handle flanges, a plurality of egg storage recesses which are depressed upward in a position corresponding to the egg storage recesses on the container main body side are also provided with partition grids which are also vertically and horizontally orthogonal. Along with partitioning by walls,

From the vertical and horizontal orthogonal portions of the partition lattice wall, an intermediate partition convex wall corresponding to the intermediate partition convex wall on the container body side is formed, a portion where the partition lattice wall crosses the four sides of the lid at right angles, and a lid. From the four corners of the body, peripheral partitioning convex walls corresponding to the peripheral partitioning convex wall on the container body side are depressed downward in a direction opposite to the egg storage recess, each of which is scattered and distributed. ,

When the eggs are stored in the egg storage recess of the container main body and covered, the bottom surface of the intermediate partition convex wall in the lid and the top surface of the intermediate partition convex wall in the container main body are each formed by a plurality. Some of them fit and the rest make surface contact,

Similarly, the bottom surface of the peripheral partitioning convex wall in the lid and the top surface of the peripheral partitioning convex wall in the container main body are determined so as to be in surface contact with each other.

The intermediate partitioning convex walls between the container body side and the lid side are partially contacted with each other,
It is characterized in that the cover state of the container body is fixed and integrated by spot welding.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the drawings. The egg container of the present invention comprises a set of a separate and independent container body (A) and a lid (B). All of them are vacuum-formed from polyethylene terephthalate, polystyrene, or other thin transparent or translucent thermoplastic plastic sheet materials into square planar contour shapes having substantially the same size as each other.

The substantially square size is, for example, about 290.
If the size is set to mm × 290 mm, the egg containers of the present invention can be stably stored and transported in a commercially available standard-size transport container (not shown) as a set of juxtaposed egg containers in parallel. This is extremely convenient for distribution because there is no need to prepare and prepare a new special transport container.

As the plastic sheet material, not only a virgin material but also a recycled material thereof, an antibacterial sheet material effective for suppressing the growth of bacteria attached to eggs, and the like can be used.

First, the structure of the container body (A) formed into a three-dimensional shape from a plastic sheet material by the vacuum forming mold will be described in detail with reference to FIGS.
(1a) has a fixed band width (for example, about 25 m) on only two parallel sides of the container body (A) having a substantially square planar contour shape.
m) and (w) are a pair of left and right grip flanges formed to protrude, and the middle area of the container body (A) excluding the grip flanges (1a) is rectangular (for example, about 240 mm).
mm × 290 mm).

In the middle area of the rectangular container body (A) in a plan view, a plurality (described in the example of FIG.
(0) egg storage recesses are formed in a grid array via partition grid walls that are vertically and horizontally orthogonal.

(2a) is a bent peripheral piece which is bent downward from the projecting end of both handle flanges (1a). This is a bent peripheral piece of the container body (A) having no handle flange (1a). The entire four sides including the remaining two parallel sides are continuously trimmed and reinforced. Therefore, both handle flanges (1a) of the container body (A) can be stably gripped and transported with both hands.

In addition, the flat surfaces of both handle flanges (1a) are also formed by the forming surface of a vacuum forming die, and the notched concave and convex groups (3) for preventing the container bodies (A) from contacting each other.
a) is given. Each of the projections of the notch group (3a) is distributed as an upwardly protruding quadrangular pyramid or the like as shown in FIGS. 6 to 8, and similarly, both handle flanges (1a).
The flat surface (4a) for the suction by the automatic suction machine is also defined on the flat surface so as to secure a so-called blank portion in the notched unevenness group (3a).

As shown in FIG. 1, the suction smooth surface (4a) is a pair of left and right sides symmetrical to the two handle flanges (1a) to divide the notched unevenness group (3a). Rectangular in plan view (for example, about 25 mm x 50 mm
Is preferably distributed in parallel.

In this case, the suction smooth surface (4a) of the handle flange (1a) is used for a large number of container bodies (A) prepared in a flat stacked state in which egg storage recesses to be described later are fitted. In order to transfer the eggs one by one to the belt conveyor of the automatic egg storage line, when sucking by an automatic suction disk (not shown) such as soccer, the suction power of the suction disk is reduced (vacuum air leakage). It is to prevent.

Further, adjacent ones of the container bodies (A) prepared in a stacked state as described above are likely to be intimately integrated due to a charging action or the like. Since it becomes difficult to separate by suction, the above-mentioned notch group (3a) is also provided as a preventive measure, but the notch group (3a) is used as a reinforcing bead for the above-mentioned handle flange (1a). Also helps.

(5a) is a partition lattice wall arranged and arranged in a vertical and horizontal orthogonal relation to a rectangular intermediate area in plan view except for the both handle flanges (1a) in the container body (A). Flange for handle (1a)
A plurality of egg storage recesses (6a), which are depressed downward by a certain depth (for example, about 30 mm) (d1) from the plane of (2), are partitioned into grids in which adjacent eggs (E) do not contact each other.

The flat top surface of the partition lattice wall (5a), which is perpendicular to the vertical and horizontal directions, is located at almost the same height as the plane of the handle flange (1a), and a certain depth (d1) from the height position. Each of the egg storage recesses (6a), which are only depressed, have a substantially truncated octagonal pyramid shape that gradually becomes thinner downward.

(7a) is a conical or frusto-conical concave groove which is inverted and depressed upward from the center of the flat bottom surface in each of the egg storage recesses (6a). Protect safely. (8a) is the same egg storage recess (6a)
The egg receiving step provided at a mid-height position on the outer peripheral surface of the above, receives the egg (E) in a storage state in which it floats from the ground contact surface, prevents accidental breakage, and stores the egg in the recess (6a). It also serves as an annular horizontal rib that reinforces the wall surface of the.

(9a) is the partition lattice wall (5a)
And a middle partition convex wall which is raised upward by a predetermined height (for example, about 15 mm) (h1) from the vertical and horizontal orthogonal portions to the opposite of the egg storage recess (6a). Egg storage recesses (6
It has a substantially truncated octagonal pyramid shape which is continuous with the wall surface of a) and gradually becomes thinner as it goes upward.

The top surface of the intermediate partition convex wall (9a) is entirely flat, but the intermediate partition convex wall (9a) is flat.
Out of the center of the flat top surface, as far as a total of six places, that is, four places scattered at four corner positions and two places interposed as a pair of left and right symmetrical in the middle position among these, A conical or truncated conical fitting protrusion (10a) is raised upward, and this is a corresponding relationship that can be fitted to a fitting groove of the intermediate partition convex wall described later on the lid (B) side. It is in.

Further, partition grid walls (5) arranged and arranged in a rectangular intermediate area in plan view of the container body (A).
a) is a portion which intersects at right angles with both handle flanges (1a) which form two parallel sides of the container body (A), and a partition grid wall (5a) is also formed of a parallel two-sided portion of the container body (A). A portion intersecting at right angles to the side and the four corners of the intermediate region in the container body (A) each have a peripheral partitioning convex wall (1).
1a) is raised upward and tall by the same constant height (h1) as the intermediate partition convex wall (9a), and has an entirely flat plane on the top surface.

The plurality (in the illustrated example, a total of 22
Of the egg storage recess (6).
Participation in section a). That is, the egg storage recesses (6a) distributed in the intermediate area having the rectangular planar contour shape in the container body (A) are formed by the partition lattice wall (5a), the intermediate partition convex wall (9a), and the peripheral partition convex. Due to the wall (11a), almost positive 8 in plan view as in FIG.
All the square openings are formed to have the same size.

The egg storage recesses (6
On the entire wall surface of (a), a group of vertical ribs for exhibiting the supporting strength of the egg (E) is provided by the above-mentioned annular horizontal rib (egg receiving step (8)).
Although the strips are arranged along the vertical direction as the concave and convex strips orthogonal to a), the reference symbols of the vertical rib groups are omitted.

In this case, a plurality of (14 in total in the example in the figure) peripheral partitioning convex walls (11a) projecting upward from a portion where the partition lattice wall (5a) and the flanges (1a) for grips intersect at right angles are formed. As is apparent from the plan view of FIG. 1, about half of the outer side is a special fitting guide convex wall portion (12a) with the lid (B), and overlaps from above to each handle flange (1a). It is in a state of lateral overhang like
The fitting guide convex wall portion (12a) guides the positioning and fitting operation with the lid (B), and also includes a handle flange (1).
It can also function as a support bone for preventing the irregular deformation of a) and a stable cradle when stacking egg containers.

However, of the fourteen peripheral partitioning convex walls (11a) which are scattered and distributed as a plurality of the total of fourteen, the two symmetrical flanges (1a) have a positional relationship facing the smooth suction surface (4a). As far as a total of four pairs of right and left pairs are not provided, there is no special fitting guide convex wall portion (12a) that overlaps from above the handle flange (1a) as described above. The outer wall surface is in a state of standing upright from the protruding base end of the handle flange (1a), and the suction smooth surface (4) of the handle flange (1a).
The automatic suction machine for the above-mentioned soccer or the like can be surely sucked to a) without any trouble.

On the other hand, a plurality of upwardly protruding portions (in the example shown in the drawing) intersecting at right angles with the other two parallel sides of the container body (A) having no handle flange (1a) and the partition lattice wall (5a). The peripheral partitioning convex wall (11a) of 12 places in total, however, 4 places in the four corners overlap.)
These also do not have the special fitting guide convex wall portion (12a), and the flat outer wall surface which is notched in its entirety is the bent peripheral piece (2a) of the container body (A).
And it is almost in a continuous state.

A total of six peripheral partitioning convex walls (11a) projecting laterally as special fitting guide convex wall portions (12a) by about half of the outer side are intermediate partition convex walls (9a).
Similar to, almost truncated 8 that gradually becomes thinner as it goes upward
Contrary to the pyramid shape, the fitting guide convex wall portion (12
The remaining 16 peripheral partitioning convex walls (11a) which do not have a) have an upright form in which only about half of the truncated octagonal pyramid is cut out.

Next, the structure of the lid (B), which is formed into a three-dimensional shape from a plastic sheet material by a vacuum molding die, will be described in detail. FIG. 9 to FIG.
b) has a fixed band width (for example, about 25 m) on only two parallel sides of the lid (B) having the substantially square planar contour shape.
m) A pair of left and right grip flanges formed to protrude only by (w), and the middle area of the lid (B) excluding both grip flanges (1b) is also rectangular (for example, about 240 mm ×
(A size of 290 mm).

However, the intermediate region of the rectangular lid (B) in plan view is a cover surface (C) having a substantially inverted U-shaped cross section, and the intermediate partition convex wall (9a) on the container body (A) side. In addition, the handle (1b) is once raised upward from the flat plane of the handle flange (1b) by a substantially same constant height (for example, about 15 mm) (h1) corresponding to the peripheral partitioning convex wall (11a). ) Is fitted over the container body (A) from above, and the flat top surface of the intermediate partition convex wall (9a) protruding from the container main body (A) side or the peripheral partition convex wall (11a). Can make surface contact with the flat top surface and the outer wall surface.

Then, the cover surface (C) of the lid (B) corresponding to the rectangular intermediate region on the container body (A) side
On the flat top surface, a plurality of egg storage recesses (total of 30 in the example of FIG. 5) described later are also provided on the container body (A) side through partition grid walls which are also vertically and horizontally orthogonal. It is partitioned and formed in a distribution state that can correspond to each egg storage recess (6a).

The protruding tips of both handle flanges (1b) are also bent downward as bent peripheral pieces (2b), and the entire four sides including the remaining two parallel sides of the lid (B) are continuous. The rim is reinforced. for that reason,
The lid (B) is folded over the bent peripheral piece (2) on the container body (A) side.
a) can be fitted from above in a corresponding manner, and at this time, the handle flanges (1a) and (1b) on the lid (B) side and the container body (A) side are kept in contact with each other. It goes without saying that you will be drowned.

(3b) is a cover (B) provided by the shaping surface of the vacuum forming die on the entire flat flat surface of both handle flanges (1b) of the cover (B) for preventing adhesion between the covers (B). It is a group of dents and projections, and is distributed as a quadrangular pyramid or the like that protrudes downward from each of the projections, and its role is similar to that of the container body (A) side. However, the flanges (1b) for both handles on the lid (B) side are not provided with those corresponding to the suction smooth surface (4a) on the container body (A) side.

(5b) is a partition lattice wall of the lid (B) corresponding to the partition lattice wall (5a) on the container body (A) side, and the cover surface (C) of the lid (B). ) From a flat top surface (for example, about 5m)
m) (h2), the partition walls (5b) that are vertically and horizontally orthogonal to each other allow the plurality of egg storage recesses (6b) to be in a grid arrangement state in which adjacent eggs (E) do not come into contact with each other. It is classified.

Each of the egg storage recesses (6b) is depressed upward by a predetermined depth (for example, about 25 mm) (d2) from the flat top surface of the cover surface (C) in the lid (B). The egg storage recess (6a) on the container body (A) side has a corresponding positional relationship facing the egg storage recess (6a), and has a substantially truncated octagonal pyramid shape that gradually becomes thinner upward. (7b) is a conical or frusto-conical concave groove which is inverted downward and depressed from the center of the flat top surface in each of the egg storage recesses (6b), and can safely store the egg (E). Protect.

(9b) and (11b) are lids (B) respectively corresponding to the intermediate partitioning convex wall (9a) and the peripheral partitioning convex wall (11a) protruding upward from the container body (A) side.
The intermediate partition convex wall and the peripheral partition convex wall are shown, and each of the plurality of the partition walls is composed of the cover surface (C) itself of the lid (B).

That is, from the flat top surface of the cover surface (C) of the lid (B), the partition lattice wall (5
b) is raised upward by a certain height (h2), and each egg storage recess (6b) sectioned through the partition lattice wall (5b) also has a flat cover surface (C). A part which is depressed by the same depth upward from the top surface by a certain depth (d2), and which is left downward on the flat top surface of the cover surface (C) in a state of being relatively depressed downward, Intermediate partition convex wall (9b) having the above-mentioned dotted distribution
And a plurality of peripheral partitioning convex walls (11b).

The intermediate partition convex wall (9b) and the peripheral partition convex wall (11) formed on the cover surface (C) of the lid (B).
The number of b) is the same as the number of the intermediate partition convex wall (9a) and the peripheral partition convex wall (11a) that protrude upward from the container body (A) side, respectively, and the lid body (B) is the container body ( As described above, the flat bottom surfaces of the intermediate partition convex wall (9b) and the peripheral partition convex wall (11b) in the lid body (B) when fitted over from above are fitted to A).
The flat top surfaces of the intermediate partition convex wall (9a) and the peripheral partition convex wall (11a) in the container main body (A) are brought into corresponding surface contact with each other.

In this respect, in the illustrated example, the planer contours of the intermediate partitioning convex wall (9b) and the peripheral partitioning convex wall (11b) in the lid (B) are both shown in FIG. Nearly positive 8 similar to those on the (A) side
It has a square shape.

Each of the egg storage recesses (6b) distributed on the cover surface (C) of the lid (B) has a partition lattice wall (5).
b), an intermediate partitioning convex wall (9b) and a peripheral partitioning convex wall (11b), a substantially regular octagon in bottom view corresponding to each egg storage recess (6a) on the container body (A) side as shown in FIG. It is sectioned as the same size as it all opens into the
Vertical ribs that exert the supporting strength of the egg (E) are also arranged on the entire wall surface as uneven strips along the vertical direction, but the reference numerals are omitted.

In this case, four corner positions of the intermediate partitioning convex wall (9b) distributed as a plurality (in the illustrated example, 4 × 5 in total of 20) on the cover surface (C) of the lid (B). Or four truncated cones and two intervening pairs of left and right symmetrics at the intermediate position, a conical or truncated cone that sinks upward from the center of the flat bottom surface A mold fitting groove (10b) is provided.

When the cover (B) is fitted over the container body (A) from above, the fitting groove (10) of the intermediate partition convex wall (9b) on the cover (B) side is used.
b) and an intermediate partitioning convex wall (9) on the container body (A) side.
The fitting protrusions (10a) of (a) correspond and correspond to each other by themselves, so that the fitting state in which the displacement is impossible can be maintained.

As described above, of the intermediate partitioning convex walls (9a) and (9b) distributed as corresponding pluralities (a total of twenty in the figure) of the container body (A) side and the lid (B) side. The fitting projections (10a) and the fitting grooves (10b) which correspond to each other are limited only to a total of six locations, that is, four locations at the four corner positions and two locations interposed at the intermediate positions thereof. The reason for this is that the lid (B) with respect to the container body (A)
The intermediate partitioning convex walls (9a) and (9b), which are capable of quickly and accurately performing the covering fitting operation, are not fitted in the remaining portion, and are kept in surface contact with each other. This is because heat welding can be performed in a spot manner by an externally heated sealing machine such as an impulse sealing machine.

With respect to the intermediate partition convex wall (9a) on the container body (A) side and the intermediate partition convex wall (9b) on the lid (B) side, all of them are fitted with a convex (10a) and a fitted concave groove. (10
If b) is installed correspondingly, the fitting operation of the container body (A) and the lid body (B) becomes rather difficult, and not only is there a lot of restrictions in forming these, but also the above-mentioned sealing machine requires This is because it is difficult to achieve spot-like heat welding smoothly and stably.

Further, of the peripheral partitioning convex walls (11b) which are scattered and distributed as a plurality (in the illustrated example, a total of 22) on the cover surface (C) of the lid (B), both the handle flanges (1) are provided.
The peripheral partitioning convex wall (1) having the fitting guide convex wall portion (12a) on the side of the container body (A) from two parallel sides where b) exists.
1a), corresponding to each of the upwardly protruding portions at a total of ten places, about half of the outer sides are special fitting guide convex wall portions (12b) with the container body (A), and are used for each handle. It is in a laterally extended state in which it overlaps the flange (1b) from above, and is fitted from above into the fitting guide convex wall portion (12a) of the peripheral partition convex wall (11a) on the container body (A) side. The surface contact state is maintained. The surrounding partition convex wall (11b)
The fitting guide convex wall portion (12b) also contributes as a support bone for reinforcing the handle flange (1b) of the lid (B) so as not to be deformed improperly, and also as a stable support for stacking egg containers.

On the other hand, of the peripheral partitioning convex wall (11b) of the lid (B), both handle flanges (1
b) the remaining four places that protrude upward from the two parallel sides and the twelve places that protrude upward from the two parallel sides that do not have both handle flanges (1b) (four places at the four corners) Does not have a special fitting guide convex wall portion (12b) with the container main body (A), and the flat outer wall surface in a cut-out form The peripheral partitioning convex wall (11a) of the container body (A) is fitted from above so as to be in surface contact with that of the convex wall (11a).

The plastic egg container according to the present invention comprises the above-described separate container body (A) and lid (B).
In use, the egg (E) is housed in the egg housing recess (6a) of the container body (A), and a lid (B) is put on the egg (E) from above and fitted.

Then, the container body (A) and the lid (B)
The intermediate partition convex walls (9a) and (9b) which correspond to each other as a total of 20 and the peripheral partition convex walls (11a) and (11b) which also correspond to a total of 22 correspond to the flat plane. In order to maintain the contact (surface contact) state, a part of all the surface contact portions is heat-welded spot-like from above by an externally heated sealing machine. (P) shows the heat-welded portion.

As can be seen from the plan view of FIG. 16 through which the entirety of the heat welding point (P) can be seen, and FIGS. 17 and 20, in the illustrated embodiment, the fitting guide convex wall portions (12a) (12a)
A total of twelve locations including six peripheral partitioning convex walls (11a) and (11b) provided with b), and six intermediate partitioning convex walls (9a) and (9b) which are interspersed and distributed at appropriate intervals. Are simultaneously welded at a time to stably and integrally integrate the cover state of the container body (A).

FIGS. 21 to 25 illustrate an automatic heat sealing machine (S) useful as an external heating type sealing machine therefor. (13) is a substantially square egg container receiving plate in plan view.
(14) An elevating guide column which is integrally suspended from its four corner positions, (15) is a horizontal motor mounting plate fixedly installed at the upper end of the elevating guide column (14), and (16) is a motor mounting thereof The center spindle is vertically suspended in a state in which the board (15) penetrates, and is moved up and down by forward and reverse rotation of a linear motor (17).

(18) is the center spindle (16)
Is a horizontal motor support plate which is attached to the lower end portion of the lifter so as to be hung, and the four corners of which are raised and lowered sleeves (1).
9), it is fitted to the above-mentioned elevating guide column (14) so as to be able to move up and down freely. (20) is also connected to the intermediate portion of the heater support plate (18) via a screw fastener (21) or the like.
A plurality (12 in total in the example in the figure) of heater bodies attached so as to be adjustable in installation height, and peripheral partitioning convex walls (11) provided with the fitting guide convex walls (12a) (12b).
a) (11b) 6 locations of the competitors and the intermediate partition convex walls (9a) (9b) distributed at appropriate intervals between the competitors.
Needless to say, it is located at a total of 12 locations including the location. An electric heating pin (22) hanging down from each heater body (20) is contact-pressed from above onto the egg container,
The container body (A) and the lid (B) are thermally welded.

Reference numeral (23) denotes an egg container holding plate parallel to the lower part of the periphery of the heater support plate (18), and its four corners are also fitted to the lifting guide column (14) so as to be movable up and down. However, it is in a suspended connection state from the heater support plate (18) by a plurality of suspension plates (24).

That is, an elevating guide slot (25) is formed in the hanging plate (24) which is integrally hung from the periphery of the heater support plate (18), and the elevating guide slot (25) is formed. The peripheral portion of the egg container holding plate (23) is inserted and engaged with 25). Therefore, together with the heater support plate (18), the egg container holding plate (2)
3) can also be raised and lowered.

A plurality of escape holes (26) are provided on the egg container holding plate (23) so as to allow the heater body (20) to escape and pass therethrough. The plurality of escape holes are adjacent to the escape hole (26). A cushion film (27) is attached and integrated from below between the mating portions. The holding plate (2
When the egg container is pressed from above by 3), the cushion film (27) is in the egg storage recess (6a) in the lid (B).
It comes into elastic contact with the top surface of the car.

Further, (28) is the lifting guide support (1).
4) the lower limit positioning stopper step provided at the lower part of
(29) is a large-diameter flange protruding from the upper end of the center spindle (16), (LS1) is a first limit switch for detecting an upper limit position which is detachably engaged with the flange (29), (LS2) and (LS3) show a second limit switch for detecting the lower limit position and a third limit switch for detecting the intermediate height position.

The upper and lower pair of the heater support plate (18) and the egg container holding plate (23) in the heat sealing machine (S) are initially in a ready state in which they are suspended to the upper limit position as shown in FIGS. The egg containers in a covered state are sequentially fed and set on the egg container receiving board (13).

When the power switch of the linear motor (17) is turned on in the feeding set state, the center spindle (16) is lowered by forward rotation of the motor (17), as shown in FIG. The egg container holding plate (23), which has reached the lower limit position, stably presses the egg container from above, and the heater support plate (18) lowered to a state where the egg container holding plate (23) penetrates.
The heater main body (20) heats and melts or blows the above-mentioned twelve portions of the container main body (A) and the lid (B) at once by the electric heating pin (22).

When the lower limit position is detected by the second limit switch (LS2), the linear motor (1)
7) is reversed, and only the heater support plate (18) is once raised to the halfway height position by the center main shaft (16) as shown in FIG. 25, while the egg container holding plate (23).
Is still kept in the holding state of the egg container,
Achieve a fully solidified, fully welded state.

The heating pin (2) of the heater body (20)
2) the heat welding point (P) is heated and melted or blown,
The time required for cooling and solidification as it is is set in advance by a timer, and after the lapse of the set time, the egg container holding plate (23) also rises, and FIG.
It will be returned to the initial state of stopping at the upper limit position such as 22. Each time such a process cycle is set in the feeding of the egg container, it is executed for each egg container.

In the illustrated embodiment, the peripheral partitioning convex wall (11) having the fitting guide convex wall portions (12a) (12b) is provided.
a) (11b) Six places of comrades and intermediate partition convex wall (9
a) (9b) Thermal welding of the container body (A) and the lid (B) is performed at a total of 12 locations, including 6 locations distributed at appropriate intervals between the competitors. The number and distribution position of the heat welding locations (P) are not limited to those in the illustrated embodiment, and can be appropriately selected according to the increase and decrease of the egg storage recesses (6a) and (6b).

The intermediate partition convex wall (9a) (9a)
As long as comrades are heat-welded in spots in several places,
Peripheral partition convex walls (11a) and (11b) provided with the fitting guide convex wall portions (12a) and (12b) in addition to or in addition to heat welding of the adjacent convex wall portions (12a) and (12b). The installation of the partitioning convex walls (11a) and (11b) is omitted, and instead of heat-welding them, the entirety of the handle flanges (1a) and (1b) on the container body (A) side and the lid (B) side is used. Alternatively, a flat smooth surface that can come into surface contact with each other may be formed on a part of the flat flange, and several flat portions of the grips (1a) and (1b) may be heat-welded in a spot-like distributed state. .

Further, in the case of the illustrated embodiment, the container body (A)
Of the intermediate partitioning convex walls (9a) and (9b) distributed as corresponding pluralities of the cover and the cover (B).
The fitting protrusion (10a) and the fitting groove (10b) that correspond to each other are provided only in a total of six places, that is, two places that are distributed as a pair of symmetrical left and right at the intermediate position. If the container body (A) and the lid body (B) can be partially fitted to each other, the positions and the number of the fitting projections (10a) and the fitting concave grooves (10b) are scattered. Is not limited to that of the illustrated embodiment, and can be appropriately selected.

At this time, the male / female relationship between the fitting protrusion (10a) and the fitting groove (10b) is reversed, and the fitting groove (10b) is formed in the intermediate partitioning convex wall (9a) on the container body (A) side. ) Is fitted to the intermediate partition convex wall (9b) on the lid (B) side.
a) may be formed correspondingly.

In any case, the egg container in which the container body (A) and the lid (B) are spot-welded to each other in a spot-like manner as described above is formed by projecting peripheral walls from the four sides of the container body (A). In combination with the fact that (11a) is raised upward and tall, the egg (E) is kept in a fixed state in which the egg (E) never falls off even if it is tilted, so that it can be transported extremely safely. It is also possible to assemble them in a stacked state with their directions changed so that they are rotated horizontally by 90 degrees as shown in FIG.

Then, the egg storage recess (6a) of the container body (A) in the upper egg container is formed by the intermediate partition convex wall (9b) and the peripheral partition convex wall of the lid (B) in the lower egg container. According to (11b), it is accepted as a so-called staggered arrangement state, so that the entire stacked state is low in volume and flattened, and there is no possibility that the stacked state is displaced.

In addition, the peripheral partitioning convex wall (11a)
Some of the parts (11b) include a handle flange (1).
a) Since the fitting guide convex wall portions (12a) and (12b) which also function as reinforcing bones of (1b) are formed so as to protrude,
The peripheral partition convex wall (11b) provided with the fitting guide convex wall portion (12b) of the lid (B) in the lower egg container,
The egg storage recess (6) of the container body (A) in the upper egg container
a) can be received more and more stably. This is the reason that it has already been stated that it serves as a cradle when stacking egg containers.

In the plastic egg container of the present invention,
Since the container body (A) and the lid (B) are heat-welded in a spot manner as described above, there is no danger that the egg (E) will be hermetically sealed, and the air permeability that is still exerted will allow the summer season to be achieved. Eggs (E) can be prevented from stuffiness and premature corrosion even during storage.

As a precautionary measure, the top surface of each egg storage recess (6b) in the lid (B) and / or the bottom surface of each egg storage recess (6a) in the container body (A) are placed in FIG. Such a vent (30) may be formed by opening, and in this case, unlike the shrink wrapping or the stretch wrapping using a separate plastic film, there is no possibility that the vent (30) is subsequently sealed.

When the egg (E) is used at the food and drink providing place, the container body (A) and the lid (B) are strongly separated from each other to fix the container at the heat welding point (P). Needless to say, the state can be solved and the egg (E) can be taken out.

Further, the spot-like heat welding point (P)
Depending on the number and distribution of
By changing the direction so that it rotates horizontally by a degree, and setting it in the heat sealing machine (S), it is possible to perform new heat welding at a position different from the previous heat welding point (P). It is.

As a result, the egg container once heat-sealed
In the unlikely event that a stained or cracked egg is found, the container body (A) and the lid (B) are strongly separated from each other, and the heat-sealed state is released, and the above-mentioned egg is returned to normal. After the replacement with the product, the egg container is subjected to the above-mentioned direction change and the heat welding again, so that there is an advantage that the egg container can be effectively used without having to be discarded.

In such a case, a manual heat sealing machine as a so-called hand tool is used to perform spot-like heat welding at a distribution position different from the automatic mechanical heat-welding point (P). Of course it is good.

[0085]

As described above, according to the present invention, a separate and independent set of the container body (A) and the lid (B) is made of a thin transparent or translucent thermoplastic sheet material substantially the same as each other. An egg container vacuum-formed into a square planar contour having a size,

A pair of handle flanges (1a) are formed on two parallel sides of the container body (A) so as to protrude by a predetermined band width (w).

In the middle region of the container body (A) except for the handle flanges (1a), a plurality of downwardly depressed egg storage recesses (6a) are provided with partition grid walls (5a) vertically and horizontally orthogonally.
With the partition formation,

From the vertical and horizontal orthogonal portions of the partition lattice wall (5a), the intermediate partition convex wall (9a), the part where the partition lattice wall (5a) crosses the four sides of the container body (A) at right angles, and the container From the four corners of the main body (A), the peripheral partitioning convex wall (11a) is raised upward in a direction opposite to the above-mentioned egg storage recess (6a), all of which are scattered and distributed.

A pair of gripping flanges (1b) are formed on two parallel sides of the lid (B) so as to protrude by a predetermined band width (w).

In the middle area of the lid (B) except for the handle flanges (1b), the egg storage which is depressed upward in a position corresponding to the egg storage recess (6a) on the container body (A) side. A plurality of recesses (6b) are defined by partition grid walls (5b), which are also vertically and horizontally orthogonal,

From the vertical and horizontal orthogonal portions of the partition lattice wall (5b), the intermediate partition convex wall (9a) on the container body (A) side.
And the intermediate partition convex wall (9b) corresponding to the above-mentioned container body from the part where the partition lattice wall (5b) intersects the four sides of the lid (B) at right angles and the four corners of the lid (B). The peripheral partitioning convex wall (11b) corresponding to the peripheral partitioning convex wall (11a) on the (A) side is depressed downward in a direction opposite to the egg storage recess (6b), each of which is scattered and distributed. Let me

The egg storage recess (6a) of the container body (A)
When the egg (E) is stored and covered, the bottom surface of the intermediate partition convex wall (9b) in the cover (B) and the container body (A)
And the top surface of the intermediate partitioning convex wall (9a) fits in a part of each of the plurality, and comes into surface contact with the rest,

Similarly, the bottom surface of the peripheral partitioning convex wall (11b) in the lid (B) and the top surface of the peripheral partitioning convex wall (11a) in the container body (A) are determined so as to be in complete contact with each other. hand,

The intermediate partitioning convex walls (9a) and (9b) between the container body (A) side and the lid (B) side face-to-face spots are partially heated out of all the places where they come into surface contact with each other. By welding, the cover state of the container body (A) is fixed and integrated, so that there is an effect that all the problems of the invention of the prior application described at the outset can be completely improved.

That is, according to the above configuration of the present invention, when the egg (E) is stored in the egg storage recess (6a) of the container body (A) and covered, the lid (B) side and the container are closed. Peripheral partitioning convex walls (11a) (1
1b) While the comrades are kept in surface contact with each other, the corresponding intermediate partition convex wall (9a)
(9b) Communities are fitted in a part of them, are in surface contact with the rest, and are spot-welded in spots at some of all the places where the surface contact is maintained. Therefore, the cover state of the container body (A) can be securely fixed and integrated by an externally heated sealing machine such as a simple and inexpensive heat sealing machine (S), and the workability of the heat welding is improved. It is extremely useful for the spread of this type of professional egg container.

Also, when the container body (A) is covered, the intermediate partitioning convex walls (9a) and (9b) are partially fitted together so that the container body (A) and the lid body (B) are connected. In this state, the bottom surface of the intermediate partition convex wall (9b) in the lid (B) and the top surface of the intermediate partition convex wall (9a) in the container body (A) are maintained. Since the heat welding is performed in spots, the heat welding work can be performed easily and conveniently, and unlike the shrink wrapping and stretch wrapping described at the beginning, the subsequent irregular deformation of the egg container and In addition, there is no possibility of the cover being displaced in position, etc., and a fixed state in which heat welding is always performed stably and reliably can be obtained.

As described above, the intermediate partitioning convex walls (9a) and (9b) between the container body (A) side and the lid (B) side are:
In some parts of all the parts that come into contact with the surface, it is heat-spotted in a spot,
Again, unlike shrink wrap and stretch wrap, there is no risk that the egg (E) stored in the egg container will be subsequently sealed, and the air permeability at the above-mentioned non-heat-welded parts will allow the egg to be stored even in the summer. (E) Moisture and its early corrosion can be prevented.

Further, depending on the selection of the number of spot-like heat-weldings to be performed and the distribution position thereof, if a fouled egg or a cracked egg is found in the egg container once heat-sealed, such By changing the direction of the egg container, it is possible to perform a new heat welding at a distribution position different from the above-mentioned heat welding point, so that it is not necessary to dispose of the egg container, and the shrink wrap described at the beginning There is no danger of wasting too much plastic film for the packaging as in the case of stretch packaging.

The above-mentioned egg container has a substantially square planar outline shape, and the cover state of the container body (A) is fixed and integrated by the spot-like heat welding.
It is possible to stably assemble a stacked state in which the direction is changed so as to be rotated horizontally every time, and there is also an effect that a large amount of the eggs (E) can be transported and stored extremely low and flat.

In this case, the container body (A) and the lid (B) have partition lattice walls (5a) (5b) and intermediate partition convex walls (9a) which define the egg storage recesses (6a) (6b). (9
In addition to b), the peripheral partitioning convex wall (11
a) Since (11b) also faces each other, it is raised up tall, so that even if the egg container is inclined for handling such as transportation and storage, the egg (E) in the stored state is accidentally inadvertently inclined. There is no risk of falling off.

In particular, if the constitution of claim 2 or 3 is adopted, not only the intermediate partitioning convex walls (9a) and (9b) between the container body (A) side and the lid (B) side, but also Peripheral partitioning convex walls (11a) and (11b) provided with the fitting guide convex wall portions (12a) and (12b), and a handle flange (1a).
(1b) Since the comrades are also thermally welded in a spot manner, the cover state of the container body (A) can be fixed and integrated more and more stably, and the safety in transportation and storage is improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing a container body of an egg container according to the present invention.

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

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

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

FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. 1;

FIG. 6 is an enlarged plan view showing a part of the handle flange of FIG.

FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG.

FIG. 8 is an enlarged horizontal sectional view showing a corner portion extracted from FIG. 1;

FIG. 9 is a plan view showing a lid of the egg container according to the present invention.

FIG. 10 is an enlarged sectional view taken along line 10-10 in FIG. 9;

FIG. 11 is an enlarged sectional view taken along line 11-11 of FIG.

FIG. 12 is an enlarged sectional view taken along line 12-12 of FIG. 9;

FIG. 13 is an enlarged sectional view taken along line 13-13 of FIG. 9;

FIG. 14 is an enlarged plan view showing a part of the handle flange of FIG. 9 in a partially extracted manner.

FIG. 15 is an enlarged sectional view taken along line 15-15 of FIG.

FIG. 16 is a plan view showing a state in which the egg container according to the present invention is covered and thermally welded.

FIG. 17 is an enlarged sectional view taken along line 17-17 of FIG. 16;

FIG. 18 is an enlarged sectional view taken along line 18-18 of FIG.

FIG. 19 is an enlarged sectional view taken along line 19-19 in FIG.

FIG. 20 is an enlarged sectional view taken along line 20-20 in FIG.

FIG. 21 is a front view of the heat sealing machine.

FIG. 22 is a side view of FIG. 21.

FIG. 23 is a sectional view taken along the line 23-23 in FIG. 21;

FIG. 24 is a cross-sectional view showing the step of heat-sealing the egg container by the heat sealing machine.

FIG. 25 is a cross-sectional view showing a step of pressing the egg container by the heat sealing machine.

FIG. 26 is a cross-sectional view showing a stacked state of egg containers according to the present invention.

FIG. 27 is a sectional view showing a modified embodiment of the egg container corresponding to FIG. 18;

[Explanation of symbols]

 (1a) (1b) ・ Flange for handle (3a) (3b) ・ Group of notches (4a) ・ Smooth surface for suction (5a) (5b) ・ Partition grid wall (6a) (6b) ・ Egg storage recess ( 9a) (9b), intermediate partition convex wall (10a), fitting convex (10b), fitting concave groove (11a) (11b), peripheral partition convex wall (12a) (12b), fitting guide convex wall (18)-Heater support plate (20)-Heater body (22)-Electric heating pin (23)-Egg container holding plate (30)-Vent (A)-Container body (B)-Lid (C)-Cover Surface (E), egg (P), heat-welding point (S), heat sealing machine (h1) (h2), constant height (w), constant band width

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 85/32 B65D 1/26 B65D 81/24

Claims (6)

(57) [Claims] An independent set of a container body (A) and a lid (B) thereof is made of a thin transparent or translucent thermoplastic sheet material, and has a square planar contour shape of substantially the same size as each other. A pair of handle flanges (1a) are formed on two parallel sides of the container body (A) by a predetermined band width (w), and the two handle flanges (1a) are formed. ), A plurality of downwardly depressed egg storage recesses (6a) are defined by partition grid walls (5a) that are vertically and horizontally orthogonal to each other, and the partition grid walls (5a) are formed in the middle area of the container body (A). The intermediate partitioning convex wall (9a) is formed from the vertical and horizontal orthogonal portions, the partitioning grid wall (5a) is also crossed at right angles to the four sides of the container body (A), and the four corners of the container body (A). Peripheral partition convex wall (11
a) is raised upward, opposite to the egg storage recesses (6a), and a pair of handle flanges is also provided on two parallel sides of the lid (B). (1b) is formed so as to protrude by a fixed band width (w), and the egg storage recess () on the container body (A) side is provided in an intermediate region of the lid (B) except for the handle flanges (1b). 6a)
A plurality of egg storage recesses (6b) which are depressed upward in a position corresponding to the above are also formed by partition walls (5b) which are also vertically and horizontally orthogonal, and the above-mentioned vertical and horizontal orthogonal portions of the partition lattice walls (5b) The intermediate partition convex wall (9b) corresponding to the intermediate partition convex wall (9a) on the container body (A) side is similarly partitioned by the partition lattice wall (5).
b) a portion intersecting at right angles with the four sides of the lid (B) and the four corners of the lid (B), the peripheral partition corresponding to the peripheral partition convex wall (11a) on the container body (A) side. The convex wall (11b) is depressed downward in a direction opposite to the egg storage recess (6b), and each of the plurality of scattered distributions is lowered to the egg storage recess (6a) of the container body (A). When the egg (E) is stored and covered, the bottom surface of the intermediate partition convex wall (9b) in the lid body (B) and the top surface of the intermediate partition convex wall (9a) in the container body (A) are the same. A part of each of the plurality is fitted, and the rest makes surface contact. Similarly, the bottom surface of the peripheral partition convex wall (11b) in the lid body (B) and the peripheral partition convex wall (11) in the container body (A).
The top surface of a) is defined so as to be in surface contact with each of the plurality of surfaces, and the intermediate partitioning convex walls (9a) and (9b) between the container body (A) side and the lid (B) side face each other. A part mainly made of plastic for business use, characterized in that the cover state of the container body (A) is fixedly integrated by spot-welding some of the contacted parts in a spot manner. Egg container. 2. The peripheral partitioning convex wall (11) which is scattered and distributed as a plurality of corresponding pluralities on the container body (A) side and the lid (B) side.
a) Of (11b), the pair of handle flanges (1)
a) Some of the parts that protrude upward from the part that intersects the right angles of (1b) and the partition lattice walls (5a) (5b) into the handle flanges (1a) (1b) from above. Overlapping fitting guide convex wall portion (12a)
(12b) is formed to project laterally, and the bottom surface of the peripheral partitioning convex wall (11b) provided with the fitting guide convex wall portion (12b) on the lid body (B) side corresponds to the container body (A) side. 2. The heat-welding method according to claim 1, wherein a portion where the top surface of the peripheral partitioning convex wall (11a) provided with the general fitting guide convex wall portion (12a) is in surface contact is also spot-welded. Commercial egg container for business. 3. A flat smooth surface capable of making surface contact with the whole or a part of the handle flanges (1a) and (1b) correspondingly projecting from the container body (A) side and the lid body (B) side. 2. The business flange according to claim 1, wherein the handle flanges (1a) and (1b) are heat-welded in spots in a scattered distribution at several places where they come into surface contact with each other. Plastic egg container. 4. An intermediate partitioning convex wall (9) which is scattered and distributed as corresponding pluralities on the container body (A) side and the lid (B) side.
a) Of (9b), the top surface of the intermediate partitioning convex wall (9a) and the lid (B) of the container body (A) are limited to only four of the four corner positions and some of the intermediate positions. ), A fitting protrusion (10a) is provided on one of the bottom surfaces of the intermediate partitioning convex wall (9b), and a fitting groove (10b) is provided on the other, and the container body (A) is covered. When the fitting protrusion (10a)
The plastic egg container according to claim 1, characterized in that it is determined that the fitting groove (10b) and the fitting groove (10b) are fitted properly by itself. 5. The intermediate partitioning convex wall (9) on the container body (A) side.
a) and the peripheral partitioning convex wall (11a) are raised upward by the same constant height (h1) from the plane of the handle flange (1a), and have substantially the same height as the plane of the handle flange (1a). The partitioning grid wall (5a) located at the upper position and the two types of partitioning convex walls (9a) and (11a) form the handle flange (1).
The egg storage recess (6a), which is depressed downward by a certain depth (d1) from the plane of (a), is formed, while the intermediate area on the side of the lid (B) has an inverted U-shaped cover surface in cross section. C) The height (h) is substantially the same as the height of the intermediate partition convex wall (9a) and the peripheral partition convex wall (11a) on the container body (A) side from the plane of the handle flange (1b).
1) upwardly, and a certain depth (d) from the flat top surface of the cover surface (C).
By providing an egg storage recess (6b) depressed upward only by 2) and a partition lattice wall (5b) protruding upward by a certain height (h2) from a flat top surface as well, relative to these. As a relation state of being downwardly depressed, the portion that will remain on the top surface of the cover surface (C) is separated from the intermediate partition convex wall (9a) and the peripheral partition convex wall (11a) on the container body (A) side, respectively. 2. An intermediate partition convex wall (9b) and a peripheral partition convex wall (11b) on the side of the lid (B) which can be brought into surface contact with each other.
A plastic egg container mainly for business use as described. 6. A handle flange (1) on the container body (A) side.
On the flat surface of a) and the handle flange (1b) on the side of the lid (B), notched concave / convex groups (3a) and (3b) each serving as a reinforcing bead are formed, and the container body (A) is formed. The smoothing surface (4a) for suction by an automatic suction machine is also defined on the handle flange (1a) on the side of the ()) side in a partially blank state of the group of concave and convex portions (3a). 2. A plastic egg container according to 1 mainly for business use.