JPH08569B2 - How to wrap matte products - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of packaging a mat-like product having raised portions at the top and bottom such as a disposable gas mat made of aluminum sheet to be placed on a gas range for display and sale. Regarding

[0002]

2. Description of the Related Art Conventionally, for example, a gas mat product is packaged by sandwiching a plurality of sheets with a packaging sheet from above and below.

That is, as shown in FIG. 7, the gas mat 1
By forming an aluminum sheet, the flange 2
And a boss portion 4 that bulges downward from the flange, a boss portion 4 that bulges above the dish portion 3 at the center, and a central opening portion 5 that is opened at the center of the boss portion 4.

Therefore, a pair of upper and lower packaging sheets 6 and 7 are used for packaging such a gas mat product. Both packaging sheets 6 and 7 are of the same shape and size,
A flange 2a formed by vacuum forming a shape-retaining vinyl chloride sheet along the flange 2 of the gas mat 1, a dish portion 3a along the dish portion 3 and the boss portion 4 Raised circular portion 4 that substantially matches
a.

Thus, conventionally, the packaging sheets 6 and 7 are polymerized on the upper and lower sides of a product 8 in which a plurality of gas mats 1 are laminated,
The peripheral edges of both packaging sheets 6 and 7 are bonded and held to each other with cellophane tape to package the product 8.

[0006]

In the conventional packaging method described above, a pair of upper and lower packaging sheets 6 and 7 formed by vacuum forming a vinyl chloride sheet must be used.
The cost cost is relatively high, and the ratio of packaging cost to inexpensive products is high.

As described above, during the packaging work,
Basically, the packing sheets 6 and 7 are polymerized on the top and bottom of the product 8 and the cellophane tape is attached, so that it is necessary to rely on manual work, and therefore efficiency cannot be improved,
Not suitable for packaging large quantities of goods.

[0008]

Means for Solving the Problems The present invention provides a method for packaging a mat-shaped product that solves the above-mentioned problems, and the first means is to provide a mat-shaped product having upper and lower raised portions. Commodity 19, a dish-shaped packaging sheet 18 that substantially conforms to the lower surface shape of the mat-shaped commodity, a step of preparing a film-shaped packaging sheet 13, and a step of placing the mat-shaped commodity 19 on the dish-shaped packaging sheet 18. A step of disposing the film packaging sheet 13 above the mat-like product 19,
According to the press die 21 having a press surface having a substantially matching shape.
Direct the film-like packaging sheet 13 to the mat-like product 19
The plate-shaped packaging sheet 18 and the film-shaped packaging sheet.
A step of covering the film-shaped packaging sheet 13 along the upper surface shape of the mat-like product 19 while bleeding air between the press-shaped mold 21 and the press die 21.
During pressing , the film-like packaging sheet 13 is welded to the periphery of the dish-like packaging sheet 18 on the outer periphery of the mat-like product 19, and the film-like packaging sheet 13 is divided along the welding line. It is in.

The present invention is configured as a second means in that a mat-like product 19 having up and down raised portions is provided.
And a step of preparing a dish-shaped packaging sheet 18 that substantially conforms to the shape of the lower surface of the mat-shaped product, and a film-shaped packaging sheet 13 that is continuously fed and wound, and placing the dish-shaped packaging sheet 18 on a conveyor. Placing the mat-shaped product 19 on the dish-shaped packaging sheet 18, and placing the film-shaped packaging sheet 13 above the mat-shaped product 19 so that the mat-shaped product 19 has an upper surface shape. Roughly matched
Fill with a press die 21 having a pressing surface of a shape
Press the strip-shaped packaging sheet 13 toward the mat-shaped product 19
Shime, plate-shaped packaging sheet 18 and film-shaped packaging sheet 13
Expel the outer circumferential direction of the air between the the steps of allowed to cover occupies along the film-like wrapping sheet 13 on the upper surface shape of the mat-like product 19, the press in accordance with the press mold 21
In addition, the film-shaped packaging sheet 13 is welded to the peripheral edge of the dish-shaped packaging sheet 18 on the outer periphery of the mat-shaped product 19 and then fused.

Further, the third aspect of the present invention is that the second aspect has a pressing surface.
The pressing die 21 constitutes a heating die, and the pressing die presses the film-shaped packaging sheet 13 against the upper surface of the mat-shaped product 19 and heats the film-shaped packaging sheet 13 to follow the upper surface shape of the mat-shaped product 19. It is in the point of molding.

Further, the fourth aspect of the present invention is that the mat-like product 19 having up and down protrusions is provided.
And a film-shaped lower sheet 31 that is continuously fed and wound along the lower surface of the mat-shaped product, and a film-shaped upper sheet 32 that is continuously fed and wound along the upper surface of the mat-shaped product. The step of preparing and the upper sheet 32 and the lower sheet 3 from above and below sandwiching the mat-like product
The upper sheet 32 and the lower sheet 31 having a pressing surface that substantially matches the upper surface shape and the lower surface shape of the mat-like product, respectively.
The upper and lower sheets 31 and 31 are heated while pressing the upper surface and the lower surface of the mat-like product with a press die composed of the lower mold 35, and the air between the sheets 32 and 31 is discharged to the outer periphery. a step of forming the top and so occupies along the lower surface, the pre-by the press die
In the process , the upper sheet 32 and the lower sheet 31 are welded and fused to each other on the outer periphery of the mat-like product 19.

[0012]

Embodiments of the present invention will be described in detail below with reference to the drawings. In the following description, the terms above or below are based on the drawings, but the present invention reverses the mat-like product to be packaged from the illustrated embodiment, that is, the mat-like product is turned upside down. It is possible to change the design so that the product can be packaged in a fallen posture.

(First Embodiment) A first embodiment of the present invention is shown in FIG.
Through FIG.

In FIG. 1, on the conveyor belt 11 which is intermittently moved, holding frames 12 are arranged at regular intervals with a predetermined interval.
Are lined up. Above the predetermined position of the conveyor path by the conveyor belt 11, the film-shaped packaging sheet 13 is unwound and wound in a direction crossing the conveyor path.
Is arranged. That is, this film packaging sheet 1
3 constitutes a continuous strip-shaped sheet which is intermittently moved from the feeding roll 14 to the winding roll, and nip rolls 16 and 1
By passing through 7, it is arranged in the vicinity of and parallel to the upper surface of the conveyor belt 11.

As shown in FIG. 4A, the holding frame 12 is preferably divided into a plurality of divided bodies 12a, 12b, 12c in the conveying direction F of the conveyor belt 11.
Consists of. Therefore, as shown in FIG. 4 (B), when the conveyor belt 11 passes back around the winding portion for the drive roller or the driven roller 11a, the divided bodies 12a, 12b, 1
2c are mutually refractable and are configured flexibly.

As shown in FIG. 1, in addition to the film-like packaging sheet 13, a dish-like packaging sheet 18 is prepared for the packaging method according to the present invention. Further, as a matter of course, the mat-like product 19 to be wrapped is prepared.

In the illustrated example, the mat-like product 19 is
The gas mat 1 described above with respect to the conventional example is shown, and has the flange 2, the dish portion 3, the boss portion 4, and the central opening 5 as shown in FIG. 7.

The dish-shaped packaging sheet 18 is formed into a shape that generally matches the shape of the lower surface of the mat-like product 19.
This is the same as the packaging sheet 7 described above with respect to the conventional example. Therefore, the flange 2a and the pan 3 as shown in FIG.
a and a raised circular portion 4a, which allows it to be fitted to the lower surface of the gas mat 1. However, the material of the dish-shaped packaging sheet 18 is preferably vacuum-molded using another resin sheet because a conventional vinyl chloride sheet has a pollution problem of generating chlorine gas during combustion.

In a preferred embodiment of the present invention, the film-like packaging sheet 13 and the dish-like packaging sheet 18 are
In order to enable mutual welding described later, resin materials of the same quality are used, and for example, polypropylene or polyethylene can be selected.

Each step of the packaging method according to the first embodiment will be described in order with reference to FIGS. 1 and 2.

The dish-shaped packaging sheet 18 is fitted into the holding frame 12 on the conveyor belt 11. At this time, as shown in FIG. 2A, in the dish-shaped packaging sheet 18, the dish portion 3 a is in contact with the upper surface of the conveyor belt 11, and the flange 2 a is superposed on the frame of the holding frame 12.

Next, a mat-shaped product 19 formed by stacking a plurality of gas mats 1 is placed on the dish-shaped packaging sheet 18 held by the holding frame 12. At this time,
As shown in (B), the mat-shaped product 19 is fitted substantially to the dish-shaped packaging sheet 18 and fitted to the mat-shaped product 19.
The flange 2 of the (gas mat 1) is superposed on the flange 2a of the dish-shaped packaging sheet 18. In this state, the flange 2a of the dish-shaped packaging sheet 18 has a projecting edge 2b that projects more outward than the flange 2 of the gas mat 1.

The conveyor belt 11 is stopped in a state where the mat-like product 19 is located below the film-like packaging sheet 13 by the conveyance of the conveyor belt 11, and the film-like packaging sheet 13 is brought into contact with the upper surface of the mat-like product 19 by the contact means. It is covered along the shape.

In order to configure this contact means, as shown in FIG. 1, a press die 21 driven by an elevating device 20 such as a cylinder is arranged above the film-like packaging sheet 13, and the press die 21 is disposed. 21 is a mat-like product 19
A preform with a shape that approximately matches the shape of the upper surface of the (gas mat 1).
The surface is formed. The press die 21 is provided with heating means by a heater.

Therefore, as shown in FIG. 2C, when the film-shaped packaging sheet 13 is pressed by the press die 21 toward the mat-shaped product 19, the space between the dish-shaped packaging sheet 18 and the film-shaped packaging sheet 13 is reduced. The air is discharged to the outer peripheral direction, and the film-shaped packaging sheet 13 is molded into a shape along the upper surface of the mat-shaped product 19 while being heated.

Subsequently, during pressing by the press die 21, the film packaging sheet 13 is welded to the peripheral edge of the dish-shaped packaging sheet 18, that is, the overhanging edge 2b on the outer periphery of the mat-like product 19, and the welding line is formed. The film-shaped packaging sheet 13 can be divided along the line.

For this reason, as shown in FIG. 1, above the press die 21, there is arranged a downward-dish-shaped welding die 23 which is moved up and down by a driving device 22 such as a cylinder. As shown in FIG. 3 (A), a welding surface 23a facing the overhanging edge 2b of the dish-shaped packaging sheet 18 and a welding blade 23b located on the outer peripheral side of the welding surface 23a are formed.

Therefore, as shown in FIG. 2D, when the welding mold 23 is lowered, the film-like packaging sheet 13 is pressed while covering the peripheral edge of the mat-like product 19, and the plate-like packaging sheet 18 is stretched. It is pressed against the projecting edge 2b, where the film-shaped packaging sheet 13 and the projecting edge 2b of the dish-shaped packaging sheet 18 are welded to each other by the welding surface 23a, and the film-shaped packaging sheet 13 is fused by the fusing blade 12b. Divide.

Thus, the welding mold 23 and the press mold 21.
When the conveyor belt 11 is caused to run after the conveyor is raised, a package 24 as shown in FIG. 2 (E) is dropped from the holding frame 12 at the winding portion of the conveyor belt 1.

Incidentally, in the film-like packaging sheet 13, a part of a continuous strip-shaped sheet is cut out by the welding mold 23, but the remaining strip-shaped sheet remains as a continuous strip-shaped sheet, so the cut-out portion is wound. A new sheet portion is unrolled from the unrolling roll 14 while being wound up on the take-up roll 15 to prepare for the next packaging operation. After that, the above-described work is repeated using the holding frame 12 on the conveyor belt 11.

(Modified Embodiment) In the above first embodiment,
Various modified embodiments can be constructed.

For example, in the step of covering the mat-like product 19 with the film packaging sheet 13, that is, in the step shown in FIG. 2C, when the above-mentioned air bleeding is not sufficient, a separate air bleeding means may be provided. It is possible. For example, between the overhanging edge 2b of the dish-shaped packaging sheet 18 and the film-shaped packaging sheet 13, a vacuum suction nozzle that is movable back and forth with respect to the side edge portion of the mat-like product 19 is arranged and forced. By removing the air, the film packaging sheet 13 can be made to conform to the shape of the upper surface of the mat-like product 19 in a suitable manner.

The non-welded portion 25 may be partially formed in advance on the projecting edge 2b of the dish-shaped packaging sheet 18. The non-welding portion 25 is configured by applying or printing a non-welding agent such as printing ink or varnish on the overhang edge 2b. According to this configuration, the film packaging sheet 1
Since 3 is not welded to the non-welded portion 25, when the consumer opens the package 24 and takes out the mat-like product 19, the unwelded portion of the film packaging sheet 13 should be picked and the welded portion should be peeled off. Will be easier.

(Second Embodiment) FIG. 5 shows a second embodiment of the present invention.
And shown in FIG.

According to the second embodiment of the present invention, the packaging materials for covering the upper and lower sides of the mat-like product 19 are both film-like packaging sheets. That is, with respect to the mat-like product 19, a film-shaped lower sheet 31 that is continuously fed and wound along the lower surface, a film-shaped upper sheet 32 that is continuously fed and wound along the upper surface, and both sheets. Between 31 and 32, the mat-like product 19 held by the holder 33
(Gas mat 1) is prepared.

As shown in FIG. 5A, the upper mold 34 and the lower mold 3 are arranged above and below the pair of sheets 31 and 32, respectively.
5 are arranged, and these upper and lower molds form a heat press mold with a built-in heater.

The upper mold 34 forms a press surface that substantially matches the shape of the upper surface of the mat-like product 19, and the center mold 34a
And a ring mold 34b, and the center mold 34a and the ring mold 34b are independently lifted and lowered by a lifting device such as a cylinder.

The lower mold 35 forms a pressing surface that substantially matches the shape of the lower surface of the mat-like product 19, and the center mold 35a
And a ring die 35b, and the center die 35a and the ring die 35b are independently lifted and lowered by a lifting device such as a cylinder.

Each step of the packaging method according to the second embodiment will be described in order with reference to FIGS. 5 and 6.

As shown in FIG. 5A, the mat-like product 19
As shown in FIG. 5 (B), the center molds 34a, 35 of the upper and lower molds 34, 35 are held in a state where they are held by the holding body 33.
a is moved forward to sandwich and hold the film-shaped upper sheet 32 and the lower sheet 31 above and below the mat-like product 19. In this state, the mat-like product 19 has a pair of center molds 34.
Since it is held by a and 35a, the holder 33 is retracted and separated from the mat-like product 19.

Next, as shown in FIG. 6, the upper and lower molds 3
The ring dies 34b and 35b of Nos. 4 and 35 are advanced to cover the upper and lower surfaces of the mat-like product 19 with the film-like upper sheet 32 and the lower sheet 31. At this time, the upper and lower molds 34, 3
5 is the upper surface shape and the lower surface shape of the mat-like product 19, respectively.
The upper sheet 32 and the lower sheet by a pressing surface that substantially conforms to the shape
The part sheet 31 along the upper surface and the lower surface of the mat-like product 19.
In this state, heat pressing is performed by the upper and lower molds 34 and 35, and the upper sheet 32 and the lower sheet 31 are formed so as to be along the upper surface and the lower surface of the mat-like product 19.

Each ring mold 34 b of the upper and lower molds 34, 35,
35b is welding surface 34c of welding the upper and lower sheets 32 and 31 to each other, 35c and fusion cutter 34d, is provided with the 35d, as shown in FIG. 6, flop by upper and lower molds 34 and 35
During the pressing , the upper and lower sheets 32, 31 are separated, and thereby the packaging of the mat-like product 19 is completed.

Thereafter, in the reverse order of the above, first the ring type 3
4b and 35b are retracted, and the holding body 33 is moved forward in this state to hold the packaging body, and subsequently,
After retracting the center molds 34a and 35a, the holder 33
Remove the package from. After that, the same work as described above may be repeated.

[0044]

According to the present invention as set forth in claims 1 to 3, a pair of upper and lower dish-shaped packaging sheets has been conventionally required, whereas the dish-shaped packaging sheet 18 is used only on one of the upper and lower sides and the other one. Since the inexpensive film-like packaging sheet 13 is used for the above, the cost for packaging can be significantly reduced.

Above all, since it enables automatic packaging, it greatly improves the efficiency as compared with the conventional manual packaging, and a large number of products can be packaged quickly in a short time. It is possible to tighten.

Further, according to the present invention, since the film-like packaging sheet 13 is formed along the surface of the mat-like product 19 and formed and covered, the product does not rattle during packaging, and the gas mat 1 is Such soft products can be preferably packaged without impairing the shape retention. In particular,
According to the present invention as set forth in claims 1 to 3, the press die 2 is provided.
1 has a shape that substantially matches the top surface shape of the mat-like product 19.
It has a pressing surface, and a film is formed by the pressing die 21.
The packaging sheet 13 against the mat-like product 19
So the plate-shaped packaging sheet 18 and the film-shaped packaging sheet
While removing the air between 13 and the outer circumference,
To make the packaging sheet 13 adhere to the mat-like product 19
Can be. Moreover, the press die 21
Film-like packaging around the outer periphery of the mat-like product 19
The sheet 13 is welded to the peripheral edge of the dish-shaped packaging sheet 18.
Therefore, as described above, the plate shape should be in a close contact state with air removed.
Between the wrapping sheet 18 and the film-like wrapping sheet 13,
It becomes possible to seal the cup-shaped product 19. In other words
For example, after pressing with a press die, press the die with a film.
If the sheet 13 is separated from the sheet-like packaging sheet 13,
Air is sucked in while restoring, and it is used in the later welding process.
And the sheet 13 is in the form of a package in which the mat-like product 19 is closely attached
However, in the present invention, the film-like wrapping is not possible.
The packaging in which the packaging sheet 13 is closely attached to the mat-like product 19
The effect is that it will be possible.

According to the present invention described in claim 4, since both the upper and lower packaging materials can be constituted by the film-like sheets 31 and 32, the cost cost for packaging can be further reduced. Moreover, since the film-like sheets 31 and 32 are formed along the upper and lower surfaces of the mat-like product 19 at the time of packaging, there is no need to previously form the dish-like packaging sheet as in the conventional case, which contributes to cost reduction. it can. Particularly, according to the present invention as set forth in claim 4,
The upper mold 34 and the lower mold 35, which form the less mold, are
A product that roughly matches the top and bottom shapes of the product 19
The upper and lower molds 34, 35 have a lower surface.
The top 32 and the lower sheet 31 of the mat-like product 19
Between the two sheets 32, 31 as they are pressed toward
Close the mat-like product 19 while bleeding air
Can be tightened. Moreover, by the upper and lower molds 34, 35
An upper sheet on the periphery of the mat-like product 19 during pressing
32 and the lower sheet 31 are welded to each other
As described above, the upper sheet 3 in the close contact state with air removed
2 to seal the mat-like product 19 between the lower sheet 31
It will be possible. In other words, press by press die
After that, the upper mold 34 and the lower mold 35 are respectively attached to the upper sheet 32.
And when separating from the lower seat 31, both seats 3
While the 2 and 31 were restored, they sucked in air and melted later.
Both sheets 32 and 31 are mat-like products 19 in the wearing process.
However, in the present invention
Attach both sheets 32, 31 to the mat-like product 19
This has the effect of enabling waste packaging.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a sectional view sequentially showing each step of the first embodiment of the present invention.

FIG. 3 shows details of the first embodiment of the present invention,
(A) is an enlarged sectional view showing a welding type welding surface and a fusing blade,
(B) is a partially cutaway perspective view showing a non-welded portion of the dish-shaped packaging sheet.

FIG. 4 shows details of the first embodiment of the present invention,
(A) is a perspective view showing a holding frame on a conveyor belt,
(B) is a side view showing a state in the winding portion.

FIG. 5 shows a second embodiment of the present invention, (A) is a cross-sectional view showing a state in which the upper and lower molds are opened with a mat-like product sandwiched therebetween,
(B) is a cross-sectional view showing a state in which the center mold of the upper and lower molds is closed.

FIG. 6 is a sectional view showing a second embodiment of the present invention and showing a state in which the upper and lower molds are completely closed and the packaging is completed.

FIG. 7 is a perspective view showing a conventional method for packaging mat-like products.

[Explanation of symbols]

 1 Gas Mat 2a Flange 2b Overhanging Edge 3a Plate Part 4a Raised Circular Part 11 Conveyor Belt 12 Holding Frame 13 Film Packaging Sheet 18 Dish Packaging Sheet 19 Mat Product 21 Press Mold 23 Welding Mold 23a Welding Surface 23b Welding Blade 24 Packaging Body 25 Non-welded portion 31 Film-like lower sheet 32 Film-like upper sheet 33 Holding body 34 Upper mold 34a Center mold 34b Ring mold 35 Lower mold 35a Center mold 35b Ring mold

Claims (4)

[Claims] 1. A mat-like product (1) having upper and lower raised portions.
9), a dish-shaped wrapping sheet (18) which substantially matches the shape of the lower surface of the mat-like product, and a film-like wrapping sheet (1
3), the step of placing the mat-shaped product (19) on the dish-shaped packaging sheet (18), and the film-shaped packaging sheet (13) arranged above the mat-shaped product (19). Process and upper surface of the mat-like product (19)
A press die having a press surface with a shape that roughly matches the shape.
Mat the film-like packaging sheet (13) with (21)
Plate-shaped packaging sheet that is pressed against the product (19)
Air between (18) and the film packaging sheet (13)
Expel the outer peripheral direction, a step of allowed to coated tighten along the upper surface shape of the film-like wrapping sheet (13) of the mat product (19), up by the press die (21)
The film-shaped packaging sheet (13) is placed on the outer periphery of the mat-shaped product (19) during the press, and the dish-shaped packaging sheet (18) is formed.
And a step of cutting the film-like packaging sheet (13) along the welding line while welding the mat-like article. 2. A mat-like product (1) having up and down raised portions.
9), a step of preparing a dish-shaped packaging sheet (18) that substantially conforms to the shape of the lower surface of the mat-like product, and a film-shaped packaging sheet (13) that is continuously fed and wound, and the dish-shaped packaging. The step of placing the sheet (18) on the conveyor, and the mat-like product (1
A step of placing a 9), brought arranged a film-like wrapping sheet (13) above the mat-like products (19), 該Ma
A product with a shape that roughly matches the shape of the top surface of the product (19).
Film-shaped packaging with press die (21)
Press the sheet (13) toward the mat-like product (19)
Shime, dish-shaped packaging sheet (18) and film-shaped packaging sheet
A step of covering the film-shaped packaging sheet (13) along the upper surface shape of the mat-shaped product (19) while bleeding air between the film-shaped packaging sheet (13) and the press die.
During the pressing according to (21), the mat-like product (19)
A method for packaging a mat-like product, comprising the steps of welding and fusing the film-like packaging sheet (13) to the periphery of the dish-like packaging sheet (18) on the outer periphery of the mat-like article. 3. A press die (21) having a press surface is added.
An upper surface of the mat-like product (19) is constituted by forming a heat mold and pressing the film-like packing sheet (13) against the upper surface of the mat-like product (19) by the press mold and heating the film-like packing sheet (13). The method for wrapping a mat-like product according to claim 2, wherein the mat-shaped product is molded so as to follow the shape. 4. A mat-like product (1) having upper and lower raised portions.
9), a film-like lower sheet (31) which is continuously drawn and wound along the lower surface of the mat-like product, and a film-like upper part which is continuously drawn and taken up along the upper surface of the mat-like product. A step of preparing a sheet (32),
Upper sheet (32) from above and below sandwiching the mat-like product
And the lower sheet (31) are sandwiched between them, and the upper sheet (32) and the lower sheet (31) have an upper die (34) and a lower die each having a press surface that substantially matches the upper surface shape and the lower surface shape of the mat-like product, respectively. From mold (35)
While pressing the upper and lower surfaces of the mat-like product by a press type comprising an upper sheet (32) and a lower sheet (3 Expel air to the outer periphery between both sheets (32, 31)
By heating 1) to form the mat-like product (19) along the upper and lower surfaces thereof, and by the press die
A method for packaging a mat-like product, comprising the steps of welding and fusing the upper sheet (32) and the lower sheet (31) to each other on the outer periphery of the mat-like product (19) during pressing .