JPH0547639Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an apparatus for shaping a sheet material encapsulating a drug or the like.

(Prior art and its problems) Conventionally, when molding sheet materials encapsulating drugs, etc., two sheets are overlapped and the peripheral edges are welded using heat sealing or the like to form an integral part. Heat-sealing is performed using, for example, a wafer, which has problems in that workability is extremely poor and it is difficult to continuously shape the sheet material.

(Means for Solving the Problems) The present invention was devised in view of the above-mentioned conventional problems, and its purpose is to provide a device for forming sheet materials continuously and satisfactorily. is an apparatus for forming a sheet material having a bag-like space in which a drug or the like is sealed and an extension part for fixing on the side edge, and the apparatus comprises a surface forming the sheet material and A pair of heating rollers are provided for thermally welding and integrating the respective sheets on the back side, and a recess for forming the bag-shaped space is formed on the circumferential surface of the heating roller, and the heating roller The axial length of the sheet is smaller than the width of the sheet.

(Function) A recess is formed in the peripheral edge of the heating roller, and by rolling the heating roller in a heated state, the sheet is thermally welded while being sandwiched between the pair of heating rollers. The portion remains as a portion that is not thermally welded, and a bag-like space is automatically formed in that portion. or,
Since the axial length of the heating roller is smaller than the width of the sheet, extensions that are not thermally welded are automatically formed on the side edges of the sheet material being shaped. Since this extending portion has not been heat-denatured in any way, when attaching the shaped sheet material to, for example, a cardboard box for transportation, etc., this extending portion must be properly heat-sealed and attached. I can do it.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows a sheet capable of storing cold that is used for transporting fresh flowers, etc., and FIG. 2 shows an enlarged view of the main part of the cross section taken along line A--A of this sheet.

In the figure, the packaging sheet 1 is formed into a single sheet by dividing a large number of bag-like spaces 1a with vertical and horizontal grooves 1b, and is shown in the cross-sectional view of FIG. As shown, the water permeable sheets S ₁ and S ₂ constituting the front surface and the back surface are pasted to each other at regular intervals to form a groove 1b, and a bag-shaped space having a considerable space between the grooves 1b and 1b. Part 1
A is formed, and a considerable amount of granular water-absorbing resin 2 is sealed inside this bag-shaped space 1a.
In addition, the one in Figure 2 has a water permeable sheet S ₁ on one side.
A waterproof sheet 3 is attached to the surface of the container.

The water-permeable sheets S ₁ and S ₂ are made of a sheet material that allows water and air to pass through. Such sheet materials include paper, nonwoven fabric, woven fabric, knitted fabric, and fibrous materials such as cotton. Examples include sheets.
The waterproof sheet 3 is made of a sheet material that does not allow water to pass through, and is made of a plastic sheet such as polyethylene, polypropylene, polyvinyl chloride, or the like. Also, aluminum foil may be used instead of the plastic sheet.

Moreover, the water-absorbing resin 2 sealed in the bag-like space 1a
Examples include copolymers of monomers and crosslinking agents, such as hydrolysates of starch-acrylonitrile graft polymers and hydrolysates of cellulose-acrylolitrile graft polymers, such as crosslinked polyacrylamide and hydrolysates thereof. , crosslinked sulfonated polyethylene, crosslinked popal, JP-A-52-14689
Cross-linked vinyl ester-unsaturated carboxylic acid copolymer saponified products, cross-linked polyacrylates and acrylic acid-acrylic acid ester copolymers, cross-linked isobutylene- Examples include maleic anhydride copolymers and crosslinked polyethylene oxide. Further, polymers having self-crosslinking properties, such as self-crosslinking polyacrylic acid, the resins described in Japanese Patent Publication No. 30710/1982, and polymers containing at least hydroxyl groups and carboxylate groups in the molecule, such as Japanese Patent Publication No. 54-30710, 37994
The resin described in No. In addition, it is a water-absorbing resin obtained by polymerizing starch or cellulose, a water-soluble monomer and/or a monomer that becomes water-soluble by hydrolysis, and a crosslinking agent as essential components, and performing hydrolysis if necessary. You can.

The above-mentioned water-absorbing resin may be used alone or in combination of two or more types, and the water-absorbing performance is
The amount is preferably about 20 to 2000 g/g, and the shape of the water-absorbing resin 2 is not particularly limited, and may be any shape such as powder, particulate, flake, or fiber.

For example, as shown in FIG. 3, the packaging sheet 1 configured as described above is attached to an upper flap 5a on the upper side of a flower transportation case 5 into which fresh flowers or the like can be stuffed.
It can be used by being fixed to the back side of the board via the stables 4, 4, etc. That is, as shown in FIG. 1, extending portions 1c, 1c which do not have a bag-like space 1a are integrally formed on the longitudinal side edge of the packaging sheet 1, and these extending portions 1c, 1c are formed integrally with each other. The packaging sheet 1 can be fixed to the back side of the upper flap 5a of the flower transport case 5 by driving in the stables 4, 4, etc., respectively.

In addition, when fixing the packaging sheet 1 to the back side of the upper flap 5a in this way, it is necessary to soak the packaging sheet ₁ in water in advance, and then take it out and pre-cool it in a freezer. Water penetrates into the bag-shaped space 1a, and the water-absorbing resin 2 inside
When water is absorbed and frozen in this state, the water in the water-absorbing resin 2 is stored cold, and if carnations, roses, etc. are packed in the flower transportation case 5 and delivered to a home, the water gradually cools during transportation. Cold air is emitted from the water-absorbing resin 2, so that the inside of the flower transport case 5 can be kept cool, and quality deterioration during transport of fresh flowers can be minimized.

In addition, when this packaging sheet 1 is used, even if dew condensation occurs on the surface of the packaging sheet 1, the internal water-absorbing resin 2 can absorb this condensation water well, and there is no dripping of condensation water. Even if the flower transport case 5 is made of cardboard or the like, there is no possibility of water seeping into the transport case 5, and a decrease in the strength of the transport case 5 can be minimized.

In addition to fixing the packaging sheet 1 to the upper flap 5a using the stabilizer 4, it can also be fixed using tape such as gummed tape or cloth tape.
It may be attached using an adhesive or the like.

Furthermore, if a laminate such as polyethylene laminate, polypropylene laminate, or chlorinated biphenyl film laminate is laid inside the flower transport case 5, the extending portion 1c of the packaging sheet 1 can be thermally welded to the laminate material. When heat-sealing the extension portion 1c to these laminate materials, a separate sealing machine can be used to continuously fix the packaging sheet 1 to the flower transportation case 5, so that it is possible to fix the packaging sheet 1 to the flower transportation case 5 at the time of shipping fresh flowers, etc. It is also possible to create a line.

If the entire interior of the flower transport case 5 is laminated, the heat insulation effect will be extremely good, and the transport case 5 will have excellent strength.

In addition, in this example, the packaging sheet 1 is in the form of a divided package having a large number of bag-like spaces 1a, 1a, 1a, so that the cold storage agent is not concentrated locally and is stored uniformly over the entire area. Because the agent is placed
Uniform cool air can be supplied over almost the entire area of the flower transport case 5.

In the case of the packaging sheet 1 as shown in FIG. 2, it is preferable to use the waterproof sheet 3 side in contact with the upper flap 5a.

The packaging sheet 1 can also be used for a transportation case 5 as shown in FIG. The packaging sheets 1 can also be fixed to each other for use, and in such usage conditions, freshness can be maintained more strongly. In this case,
The packaging sheet 1 fixed to the bottom flap 5b side may be hydrated and pre-cooled, but it can also be affixed without being hydrated and pre-cooled. That is, when used in a state without any water content, even if dew condensation or the like occurs inside the transport case 5 during transportation, the water-absorbing resin within the packaging sheet 1 absorbs this condensation water and the transport case 5 Good transportation is possible without water seeping into the bottom flap 5b, and the packaging sheet 1 on the bottom flap 5b side mainly functions as a moisture absorbent.

Note that although the packaging sheet 1 is shown in the form of a sachet in FIGS. Even in this case, if fixed extension parts 1c, 1c are formed on both edges, it is possible to securely fix the case to the flap part of the transportation case 5, etc. via these extension parts 1c, 1c. It is.

Furthermore, the packaging sheet may be formed into a structure as shown in the enlarged cross-sectional view in FIG. 6, and the packaging sheet 11 in FIG. The partition sheet material 14 can be formed, for example, in a triple structure in the central part, and a high melting point linear low density polyethylene layer 14a is formed in the central part, and on the front and back sides thereof Low melting point linear polyethylene 14b, 14b is arranged, and this partition sheet material 14 can also be formed into a single sheet of low melting point linear polyethylene in addition to the sandwich structure.

A nonwoven fabric 1 is provided on one side surface of this packaging sheet 11.
2 is disposed, and an air-permeable plastic film 13 is disposed on the other side. The nonwoven fabric 12 is made of, for example, a polyester-nylon spunpond nonwoven fabric or an olefin spunpond nonwoven fabric, and has good water permeability. On the other hand, the permeable plastic film 13 is made of low density polyethylene, vinyl chloride, polycarbonate, polypropylene, nylon, hydrochloric acid rubber, vinylon, etc., and has pores that do not allow water to pass through but allow air to pass through. You can keep it.

The partition sheet material 14, the nonwoven fabric 12, and the air-permeable plastic film 13 are heat-welded at predetermined intervals to form grooves 11a to form the bag-shaped spaces A and B on the front and back sides, respectively, in the shape of a sachet. . For example, water-absorbing polymer 2, silica gel 15, etc. can be sealed in the bag-like space A, and in the bag-like space B on the other side, for example, a life-prolonging agent, a gas adsorbent, an oxygen absorber (iron powder), etc. can be sealed. ), an oxygen generating agent, a carbon dioxide generating agent, a deethyleneizing agent 16, etc. can be sealed.

The packaging sheet 11 formed in this way can be used by being arranged in a spanning manner on the upper part of the flower transport case 5, as shown in FIG. Connect the exit portion 11c to the inside of the upper flaps 5a, 5a of the transport case 5,
Alternatively, it can be attached to the inside of the main body of the transport case 5 using double-sided tape, heat welding, high-frequency sealing, etc. If it is transported in such a state, for example, the bag-shaped space A may be on the bottom side. If the bag-like space B is located on the upper surface side, the water-absorbing polymer 2 in the bag-like space A is hydrated and cooled, and cold air is drawn from the water-absorbing polymer 2 into the transport case 5 during transportation. Ethylene gas generated inside the transport case 5 due to the action of the life-prolonging agent, de-ethening agent, etc. sealed in the bag-shaped space B on the upper surface side, Carbon dioxide gas and the like can be adsorbed well in this bag-shaped space B, and better freshness can be maintained.

Incidentally, FIG. 8 shows a schematic perspective view of an apparatus for shaping the packaging sheet 1 shown in FIGS. 1 and 2.

That is, the apparatus has drums 20, 20 around which the water-permeable sheets S ₁ and S ₂ are wound, respectively.
In the process of drawing out sheets S ₁ and S ₂ separately from 0, both sheets S ₁ and S ₂ are passed between a pair of heating rollers 21 and 22, and the pair of heating rollers 21 and 22 are kept in a heated state. , the water-permeable sheets S ₁ and S ₂ are thermally welded and integrated. In addition, a large number of recesses 22a are formed in the circumferential surface of both or one side of the heating roller.
This portion of the recess 22a is not heat welded, and the bag-shaped space 1a is formed in this portion in the form of a sachet. In addition, the integrated seat
S ₁ and S ₂ are cut into appropriate lengths using cutters 23 and 23 to complete the packaging sheet 1. In addition, when heat-sealing with the heating rollers 21 and 22, by dropping the water-absorbing resin 2 etc. from above the pair of heating rollers 21, 22 through a hopper etc., this water-absorbing resin 2 is well formed into a bag shape. It is enclosed within the space 1a.

In addition, in this example, the water permeable sheet S ₁ on one side
The width H ₁ of the heating roller 21 is shorter than the width H ₂ of the water permeable sheet S ₂ on the other side.
The axial lengths of and 22 are set to a length corresponding to the width _H1 . For this reason, extending portions 1c consisting only of the water-permeable sheet _S2 on one side are continuously formed on both edges of the packaging sheet 1 that is completed when heat-welded and integrated.

Furthermore, FIG. 9 shows an apparatus for shaping the packaging sheet 11 shown in FIG. 6.

In the apparatus shown in FIG. 9, a drum 25 with a partition sheet material 14 wound thereon is disposed at its upper portion, and a pair of hoppers 28 and 29 are disposed below the drum 25. Measuring devices 30 and 31 are provided at the bottom of 29, respectively. For example, a water-absorbing polymer 2 or the like can be placed in this hopper 28.
9 can contain life-extending agents, activated carbon, etc. Each measuring device 30, 31 is formed in the shape of a plurality of squares, and in order to obtain the packaging sheet 11 in the form of sachets, an appropriate amount of water-absorbing polymer, etc. is dispersed and placed in each square. Become. A drum 26 wrapped with a nonwoven fabric 12 and an air-permeable plastic film 1 are attached to the bottom of the pair of measuring devices 30 and 31.
The drums 27 on which the nonwoven fabric 12 is wound are disposed facing each other.
A permeable plastic film 13 is supplied and combined with the partition sheet material 14 from the drum 25. The pair of heat rollers 32, 32 are for thermally welding the sheets 12, 13, 14 at predetermined intervals in the drawing direction, and are heated, and when the pair of heat rollers 32, 32 come into contact, , the groove portion 11a is formed by thermal welding. At this time, as described above, water-absorbing polymers and the like are dropped through the measuring devices 30 and 31 and encapsulated in the sheet. A pair of heat rollers 33, 33 are disposed below, and these heat rollers 33, 33 are for forming grooves 11a in the vertical direction of the packaging sheet 11, and grooves 33a are formed at predetermined intervals in the horizontal direction. and a convex portion 33b are formed, and when the convex portions 33b of the pair of heat rollers 33, 33 are continuously rotated in contact with each other, the groove portion 11a is longitudinally thermally welded to the packaging sheet 11.
are formed continuously. In this way, the pair of heat rollers 32, 32 and the heat rollers 33, 33 below the heat rollers 33, 33 separate the packaging sheet 11 into packages.
are continuously formed, and the lower cutters 34, 34
The packaging sheet 11 is completed by cutting at predetermined intervals.

(Effects of the invention) The present invention is an apparatus for forming a sheet material having a bag-like space in which a drug or the like is sealed and an extension part for fixing on the side edge. A pair of heating rollers are provided for thermally welding and integrating the front and back sheets constituting the sheet material, and a recess for forming the bag-shaped space is formed on the circumferential surface of the heating roller. In addition, since the axial length of the heating roller is smaller than the width of the sheet, the pair of heating rollers are rotated to thermally weld the front and back sheets to continuously form the sheet material. Since the concave portion of the circumferential surface of the heating roller is not thermally welded during this modeling, a bag-shaped space is automatically formed. Since the length is small, an unwelded extension 2 is automatically formed on the side edge of the sheet material, and this extension can be used to properly stick the shaped sheet material in the appropriate place. This has the effect of expanding the range of uses of the shaped sheet material.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a perspective view of a packaging sheet, Fig. 2 is an enlarged cross-sectional view taken along the line A-A in Fig. 1, and Fig. 3 shows the packaging sheet in Fig. FIG. 4 is a perspective view of the packaging sheet attached to a transport case for transportation, FIG. 5 is a perspective view of a modification of the packaging sheet, and FIG. 6 is a packaging sheet. Fig. 7 is a perspective view of the packaging sheet shown in Fig. 6 when used in a transportation case, and Fig. 8 shows the packaging sheet shown in Figs. 1 and 2. FIG. 9 is a schematic diagram of an apparatus for shaping the packaging sheet shown in FIG. 6. FIG. 1...Packaging sheet, 1a, A, B...Bag-shaped space part, 1b, 11a...Groove part, 1c...Extending part, 2
... Water-absorbing polymer, 3 ... Waterproof sheet, 4 ...
Staple, 5...Flower transport case, 5a...Top flap, 5b...Bottom flap, 12...Non-woven fabric,
13...Permeable plastic, 14...Partition sheet material, 20, 25, 26, 27...Drum, 2
1, 22... Heating roller, 23, 34... Cutter, 28, 29... Hopper, 30, 31...
Measuring device, 32, 33...Heat roller, S ₁ , S ₂
...Water permeable sheet.

Claims (1)

[Scope of utility model registration request] A device for modeling a sheet material having a bag-like space in which a drug or the like is sealed and an extension part for adhesion on the side edge, the device comprising: A pair of heating rollers are provided for thermally welding and integrating the respective sheets, and a recess for forming the bag-shaped space is formed on the circumferential surface of the heating roller, and an axis of the heating roller is provided. A sheet material shaping device characterized in that the length in the direction is smaller than the width of the sheet.