CN113165779B - Bag making and filling method - Google Patents
Bag making and filling method Download PDFInfo
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- CN113165779B CN113165779B CN201980076186.XA CN201980076186A CN113165779B CN 113165779 B CN113165779 B CN 113165779B CN 201980076186 A CN201980076186 A CN 201980076186A CN 113165779 B CN113165779 B CN 113165779B
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Abstract
Provided is a bag-making and filling film which can suppress the generation of film fragments when a packaging bag is opened. According to the present invention, there is provided a bag-making and filling film comprising a co-extruded layer obtained by co-extruding a plurality of resin layers, the co-extruded layer including an easily peelable resin layer forming an innermost layer of the bag-making and filling film.
Description
Technical Field
The present invention relates to a bag-making and filling film and a bag-making and filling method.
Background
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 11-130145
Disclosure of Invention
(problems to be solved by the invention)
When the contents are taken out of the packaging bag manufactured by the method of patent document 1, the packaging bag is opened by peeling the easy-peel portion welded by the easy-peel sealant layer, and at this time, if the packaging bag is opened by force, film fragments may be generated.
The present invention has been made in view of the above circumstances, and provides a bag-making and filling film that can suppress film fragments generated when opening a packaging bag.
(means for solving the problems)
According to the present invention, there is provided a bag-making and filling film comprising a co-extruded layer formed by co-extruding a plurality of resin layers, the co-extruded layer including an easily peelable resin layer forming an innermost layer of the bag-making and filling film.
The present inventors have made extensive studies and found that in patent document 1, a film constituting a substrate layer and a film constituting an easily peelable sealant layer are formed in advance, and then these films are laminated to form a laminated film, and that there is a case where the adhesiveness between the substrate layer and the easily peelable sealant layer is insufficient, and film fragments are generated.
When a packaging bag is manufactured by bag-making and filling using a film of an easily peelable resin layer having a coextruded layer as an innermost layer, the adhesion between a plurality of resin layers constituting the coextruded layer is sufficient, and the occurrence of film fragments in opening the packaging bag can be suppressed, leading to completion of the present invention.
Various embodiments of the present invention are exemplified below. The embodiments shown below can be combined with each other.
Preferably, the co-extruded layer of the bag-making and filling film includes a polyamide layer, an LLDPE layer, and the easy-release resin layer in this order.
Preferably, the co-extruded layer of the bag-making and filling film includes a heat-seal layer forming an outermost layer of the bag-making and filling film.
Preferably, the co-extruded layer of the bag-making and filling film includes the heat-sealing layer, a polyamide layer, and the easy-release resin layer in this order.
Preferably, the heat seal layer of the bagging and filling film comprises a polyolefin.
Preferably, the Young's modulus of the bagging and filling film is 100MPa or more.
Preferably, the bag-making and filling film of the bag-making and filling film is a coextruded film composed of only the coextruded layer.
Preferably, the bag-making and filling method includes a bag-making and filling step of filling contents into a cylindrical body formed by heat-sealing the bag-making and filling film into a cylindrical shape having a closed lower end, and then heat-sealing an upper end of the cylindrical body.
Drawings
Fig. 1 is a structural diagram showing a layer structure of a bag-making and filling film 1 according to embodiment 1 of the present invention.
In fig. 2, fig. 2A is a perspective view of the packaging bag 10, and fig. 2B is a sectional view of the vicinity of the vertical seal portion 12.
Fig. 3 is a schematic diagram for explaining the bag-making and filling method.
Fig. 4 is a structural diagram showing the layer structure of the bag-making and filling film 1 according to embodiment 2 of the present invention.
Fig. 5 is a sectional view of the vicinity of the vertical seal portion 12 of the packaging bag 10 according to embodiment 3 of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described. Various features shown in the embodiments shown below may be combined with each other. Meanwhile, each feature may independently establish the invention.
1. Embodiment 1
1-1. Bag-making filling film 1
As shown in fig. 1, a bag-making and filling film 1 according to embodiment 1 of the present invention includes a coextruded layer 1a formed by coextruding a plurality of resin layers. The coextruded layer 1a includes an easy-peel resin layer 4 as an innermost layer of the film 1. In one example, the coextruded layer 1a is provided with a polyamide layer 2, an LLDPE layer 3, and an easy-release resin layer 4. The LLDPE layer 3 can be omitted and the coextruded layer 1a can be provided with a polyamide layer 2 and an easy-release resin layer 4. The co-extruded layer 1a may have another layer such as an adhesive layer between the layers. In the coextruded layer 1a, the polyamide layer 2 may be the outermost layer, or another layer may be provided outside the polyamide layer 2.
As shown in the present embodiment, the film 1 may be a coextruded film composed only of the coextruded layer 1a (in other words, the film 1 may be a coextruded film in which no other layer is laminated alone), or may be a film composed of the coextruded layer 1a and another layer laminated thereon. In the latter case, the easy-peel resin layer 4 of the coextruded layer 1a is laminated with another film which becomes the innermost layer of the film 1.
Each layer constituting the film 1 may be made of only a resin, or may be made of a material obtained by adding an additive such as a lubricant or an antistatic agent to a resin.
The coextruded layer 1a is formed by coextruding all the layers constituting the coextruded layer from an extruder. The adhesion between the plurality of resin layers constituting the co-extrusion layer 1a is high, and the easily peelable resin layer 4 of the co-extrusion layer 1a is the innermost layer of the film 1, so that it is possible to suppress the generation of film fragments when opening the packaging bag formed using the film 1.
The co-extruded layer 1a can be produced by preparing a resin or an additive necessary for each layer, separately feeding the resins or additives to different extruders for each layer (at least 3 extruders when the number of layers of the co-extruded layer 1a is 3 or more), and then using a known molding method such as a T-die molding method or an inflation molding method.
The inflation method is a method in which a cylindrical molten resin extruded from an annular die is inflated with air to form a tubular inflation film, the inflation film is air-cooled to solidify the inflation film, the inflation film is folded into a flat shape by a pinch roll, and finally the inflation film is wound and formed by a winding roll. The pair of winding rolls may be obtained by winding the tubular film folded into a flat shape as it is to obtain a winding roll of the tubular film, then cutting both ends of the tubular film folded into a flat shape, separating the tubular film into 2 pieces of films, and then winding the films. In the former case, the tubular film fed from the winding roll may be used as it is as the film 1 for bag-making and filling, or the tubular film may be cut at both ends and separated into 2 sheets of films, and then each of the sheets of films may be used as the film 1 for bag-making and filling. Further, 2 films may be wound up to obtain a pair of winding-up rolls. When a pair of take-up rolls is obtained, the films respectively fed out from the take-up rolls are used for bag making and filling as the film 1. When the tubular film is cut at both ends thereof to separate it into 2 sheets, the cylindrical molten resin is preferably extruded so that the easy-peeling layer forms the innermost layer. When the tubular film folded into a flat shape is used for bag making and filling as it is, the easy-peeling layer of the cylindrical molten resin is formed as the outermost layer, and the innermost layer and the outermost layer of the bag at the time of bag making and filling are formed as the easy-peeling layers.
The thickness of the film 1 is, for example, 20 to 300. Mu.m, preferably 70 to 140. Mu.m. The thickness may specifically be, for example, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 250, 300 μm, or may be in a range between any 2 of the values shown.
The Young's modulus of the film 1 is preferably 100MPa or more, more preferably 300MPa or more, and still more preferably 500MPa or more. The Young's modulus of the film 1 is preferably 2000MPa or less, more preferably 1500MPa or less, still more preferably 1300MPa or less, and still more preferably 1100MPa or less. The young's modulus body may be, for example, 100, 200, 300, 400, 500, 1000, 1100, 1300, 1500, 2000MPa, or may be in a range between any 2 values shown. If the Young's modulus is too low, the strength of the film 1 becomes weak, and the film 1 is liable to swing during bag making. If the Young's modulus is too high, the seal strength tends to be too strong. The young's modulus was measured in the MD direction (longitudinal sealing direction) of the film 1 according to JIS K7127.
The value of [ thickness (μm) of the film 1 × young's modulus (MPa) of the film 1 ] is preferably 3 ten thousand or more, more preferably 3.5 ten thousand or more, and further preferably 4 ten thousand or more. This is because the bag-making performance becomes particularly good in this case. The value is, for example, 31000 to 150000, and specific examples thereof are 3 ten thousand, 3.5 ten thousand, 4 ten thousand, 5 ten thousand, 6 ten thousand, 7 ten thousand, 8 ten thousand, 9 ten thousand, 1 ten thousand 0, 11 ten thousand, 12 ten thousand, 13 ten thousand, 14 ten thousand, and 15 ten thousand, and may be within a range of any 2 numerical values shown.
The polyamide layer 2 contains polyamide. The polyamide used in the polyamide layer 2 may be a lactam having three or more membered rings, a homopolymer of a polyamide derived from a polymerizable ω -amino acid, a diamine and a dicarboxylic acid, or a copolymer, each of which may be used alone or as a mixture, and specific examples thereof include 6 nylon and 66 nylon. These polyamides may also be homopolyresins, or copolymers and mixtures thereof. The constituent resin of the polyamide layer 2 may be only polyamide, or may contain other resins. As the other resin, a resin that increases the rigidity of the polyamide layer 2 is preferable. The content of the polyamide is preferably 50 mass% or more with respect to the entire resin constituting the polyamide layer 2. Specifically, the content may be, for example, 50, 60, 70, 80, 90, or 100 mass%, or may be in a range between any 2 values shown.
The thickness of the polyamide layer 2 is usually 10 μm or more, preferably 20 μm or more, more preferably 30 μm or more, and usually 150 μm or less, preferably 120 μm or less, more preferably 100 μm or less. The lower limit of the thickness of the polyamide layer 2 is set to 10 μm, and the pinhole resistance is more excellent, and the upper limit is set to 150 μm, and the cutting property of the film is more excellent.
The LLDPE layer 3 contains Linear Low Density Polyethylene (LLDPE). By providing the LLDPE layer 3, the strength of the film 1 is enhanced, thereby reducing the wobbling of the film 1 at the time of bag making. The LLDPE layer 3 may be composed of only LLDPE, or may contain another resin. As the other resin, a resin that increases the rigidity of the LLDPE layer 3 is preferable. The content of LLDPE with respect to the total resin constituting the LLDPE layer 3 is preferably 50 mass% or more. Specifically, the content may be, for example, 50, 60, 70, 80, 90, or 100 mass%, or may be in a range between any 2 values shown.
From the viewpoint of processability, economy and workability, the thickness of the LLDPE layer 3 is usually 5 μm or more, preferably 8 μm or more, and more preferably 10 μm or more, and the upper limit thereof is not particularly limited, but is preferably 25 μm or less, more preferably 20 μm or less, and more preferably 15 μm or less. The Young's modulus of the LLDPE layer 3 is preferably 250MPa or more and 1000MPa or less.
The easy-peel resin layer 4 contains an easy-peel resin. The easy-peel resin preferably has cohesive failure. For example, 2 or more types of heat-sealable resins, and can constitute a weakly-sealable resin having a peel strength substantially lower than 10N/15mm width according to JIS K6854. In one example, the easy peel resin is composed of a mixed resin of a Polyethylene (PE) based resin and a polypropylene (PP) or Polybutylene (PB) based resin.
Blending ratio of PE resin to PP or PB resin: the PE resin is 50 to 90 mass% and the PP or PB resin is 10 to 50 mass%, and the PE resin is preferably contained in a larger amount as the compounding ratio. Preferred PE resins: PP or PB-based resin =70:30.
examples of the PE resin include: linear Low Density Polyethylene (LLDPE), medium Density Polyethylene (MDPE), high Density Polyethylene (HDPE), ethylene acrylic acid copolymer (EAA), ethylene ethyl acrylate copolymer (EEA), ethylene methacrylic acid copolymer (EMAA), ethylene methyl methacrylate copolymer (EMMA), ethylene methyl acrylate copolymer (EMA), and ionomers thereof. These may be used alone or in combination.
Any of random copolymers, homopolymers, block copolymers and the like can be used as the PP-based resin, and among them, random copolymers are preferably used. The copolymerization component of the copolymer may be an α -olefin such as ethylene.
Examples of the PB-based resin include homopolybutene and a copolymer of butene and ethylene.
The thickness of the easy-to-peel resin layer 4 is usually 3 μm or more, preferably 4 μm or more, and more preferably 5 μm or more, and is usually 15 μm or less, preferably 12 μm or less, and more preferably 10 μm or less, from the viewpoint of film formability and appearance at the time of peeling. By setting the thickness of the easy-peeling resin layer 4 to 3 μm or more, stable film formability can be obtained. By setting the thickness of the easy-peeling resin layer 4 to 15 μm or less, generation of fuzz or film residue at the time of opening the package can be suppressed, and a good peeling appearance can be obtained.
1-2. Packaging bag 10
As shown in fig. 2, a packaging bag 10 according to embodiment 1 of the present invention is configured by forming a film 1 into a bag shape.
The packaging bag 10 includes a vertical seal portion 12, a horizontal seal portion 13, and a horizontal seal portion 14. The vertical seal portions 12 are formed by heat-sealing overlapping portions 15 excluding the end edge portions in a band shape in a state where the film 1 is bent into a cylindrical shape and the easily peelable resin layers 4 at both ends of the film 1 are overlapped with each other. The end edge portions constitute tape peeling portions 16, 17 adjacent to the vertical seal portion 12. The longitudinal seal portion 12 can be easily peeled off by grasping and pulling the tape peeling portions 16, 17.
1-3. Bag making and filling method
A bag-making and filling method using the film 1 is explained with reference to fig. 3. The method may be implemented using a vertical form and fill machine 100. In the present embodiment, a co-extruded film having a young's modulus of 100MPa or more is used as the film 1.
< step 1 of shaping the film 1 into a cylindrical shape >
First, the film 1 fed from the roll F is guided to the molding machine 112 by the plurality of discharge rollers 120 and 121. A sensor 119 is disposed midway along the path from the roll F to the forming machine 112, and detects the alignment marks printed at regular intervals in the longitudinal direction of the film 1, and feeds out the film 1 of a fixed length at regular time intervals on the track of the bag making and filling machine 100. The film 1 is bent into a cylindrical shape when passing through the forming machine 112, and both side edge portions of the bent leading end overlap each other. The overlapping portions 15 are formed at the portions overlapping each other.
< Process 2 of forming the longitudinal seal part 12 >
Then, the overlapped portion 15 of the film 1 is heat-sealed by a longitudinal sealing machine 113 to form a longitudinal sealed portion 12. The vertical sealing machine 113 includes a pair of sealing bars, and performs heat sealing by sandwiching the overlapping portion 15 between the pair of sealing bars for a predetermined time at the timing when the film 1 moves at a predetermined time interval. The bag-filling cannot generally be used because the coextruded film is generally weak in hardness and is liable to cause troubles such as waving at the time of heat-sealing. In the present embodiment, by using a co-extruded film having a young's modulus of 100MPa or more, the film 1 can be suppressed from swinging, and thus bag making and filling can be performed without using a special bag making and filling machine. Note that, instead of using a co-extruded film having a young's modulus of 100MPa or more, the oscillation of the film 1 may be suppressed by using a bag-making and filling machine having a mechanism for suppressing the oscillation of the film 1.
< step 3 of forming a lower lateral seal part 13 >
Then, the openable and closable crushing roller 115 is closed to crush the cylindrical body 7 formed of the film 1. This can flatten (flatten) the cylindrical body 7. Then, the predetermined position of the flattened cylindrical body 7 is heat sealed by a transverse sealing machine 116, thereby forming a transverse sealing portion 13. The cross sealer 116 includes a pair of sealing bars, and performs heat sealing by holding the predetermined position therebetween for a predetermined time.
Thereby, the lower end of the cylindrical body 7 is closed.
< step 4 of filling the content >
After the crushing roller 115 is opened, a predetermined amount of the content W is charged into the cylindrical body 7 by the hopper 111.
< step 5 of forming a lateral seal part 14 in the upper part of the bag >
Then, the transport roller 114 is rotated to feed out the tubular body 7 and the film 1 immediately following the tubular body by a predetermined length together with the packaging bag 10a before separation. The pair of sealing bars of the cross sealer 116 is closed for a predetermined time and heat-sealed at predetermined positions, and the upper cross seal 14 is formed to seal the packaging bag 10, and the lower cross seal 13 of the next packaging bag located upstream of the track to which it is connected is formed.
< 6 th Process for cutting boundary line of continuous bag >
The pressing and cutting unit 118 is closed, the lower side transverse sealing portion 13 of the packaging bag 10a before separation and the upper side transverse sealing portion 14 connected thereto are pressed, the boundary between the two is divided into two by the cutting unit 118a, and the packaging bag 10 is dropped onto the conveyor 130.
In this manner, the packaging bag 10 filled with the content W can be manufactured. In the packaging bag 10, the content W is taken out by opening the vertical seal portion 12 and peeling the easily peelable resin layer 4 of the coextruded layer 1a as the innermost layer of the film 1, so that the adhesiveness between the resin layers is sufficiently high and the generation of film fragments at the time of opening can be suppressed.
Examples of the content W include viscous foods such as flour paste (flour paste), jam, and filling.
Especially in food factories, flour chips in which a batter is packed into a sheet are added on the production line of bread dough. It is therefore desirable to be able to easily unseal the bag. The internal volume is, for example, 0.5kg to 10kg, and the packaging bag is, for example, a size for business use (the size of the bag is 30 cm. Times.30 cm or more).
2. Embodiment 2
In the present embodiment, the coextruded layer 1a includes a heat seal layer 5 as the outermost layer of the film 1. In one example, the coextrusion layer 1a includes a heat seal layer 5, a polyamide layer 2, and an easy peel resin layer 4. The polyamide layer 2 may be omitted, and the co-extrusion layer 1a may be provided with the heat-sealing layer 5 and the easily peelable resin layer 4. The coextruded layer 1a may be provided with another layer such as an adhesive layer between the layers.
The description of the polyamide layer 2 and the peelable resin layer 4 is the same as in embodiment 1. The heat seal layer 5 is a layer containing a resin having heat sealability. Examples of such resins include polyolefins such as polyethylene, polypropylene, and propylene-ethylene copolymers, polyamides or copolyamides having a low melting point or a low softening point, polyester fibers or copolyester fibers, and polycarbonate fibers, with polyolefins being preferred and polypropylene being more preferred. This is because polyolefin is excellent in heat sealability, and polypropylene is excellent in heat sealability and rigidity. The content of the polyolefin is preferably 50% by mass or more with respect to the entire resin constituting the heat seal layer 5. Specifically, the content may be, for example, 50, 60, 70, 80, 90, or 100 mass%, or may be in a range between any 2 values shown.
From the viewpoint of heat sealability, the heat seal layer 5 is preferably made of a resin having a lower melting point than the polyamide layer 2. In general, since polyolefin has a lower melting point than polyamide, it is preferable that the heat-seal layer 5 contains polyolefin from the viewpoint of heat-sealability.
Further, since polyamide has high hygroscopicity, when the polyamide layer 2 is the outermost layer of the film 1, the polyamide layer 2 may absorb moisture to cause warpage of the film 1. In the present embodiment, the heat seal layer 5 is the outermost layer, and therefore moisture absorption of the polyamide layer 2 can be suppressed. From this viewpoint, the heat seal layer 5 is preferably made of a resin having lower moisture absorption than the polyamide layer 2. Since polyolefin generally has lower moisture absorption than polyamide, it is preferable that heat-seal layer 5 contains polyolefin from the viewpoint of moisture absorption.
When the heat seal layer 5 is provided on the outermost layer of the film 1, the outermost layer of the film 1 is welded to each other at the intersection 18 of the longitudinal seal portion 12 and the transverse seal portions 13, 14 as shown in fig. 2A. That is, the tape separating portions 16 and 17 shown in fig. 2B are welded to the facing surfaces 16a and 17a of the intersecting portions 18. Gaps G1, G2 are provided between the tape separating portions 16, 17 and the facing surfaces 16a, 17a of the vertical seal portion 12 other than the intersecting portion 18. When the packaging bag 10 is opened, the tape peeling parts 16 and 17 are pulled to separate the tape peeling parts 16 and 17 from each other in a state where one finger is inserted into the gap G1 and the other finger is inserted into the gap G2 to grip the tape peeling part 17, whereby the seal at the vertical seal part 12 is broken, but at this time, the fingers slip in the longitudinal direction of the tape peeling parts 16 and 17 (i.e., the longitudinal direction of the vertical seal part 12). If the fingers slip, the tape peeled portions 16, 17 are difficult to be pulled. However, in the present embodiment, the belt separating portions 16 and 17 and the facing surfaces 16a and 17a thereof are welded to the intersecting portion 18, and even if a finger slips in the longitudinal direction of the belt separating portions 16 and 17, the slip stops at the intersecting portion 18. Therefore, the package bag 10 is easily opened.
3. Embodiment 3
In embodiment 2, the width of the tape peeling section 16 is substantially the same as the width of the vertical seal section 12, but when the outermost layers of the film 1 are welded to each other at the intersection 18, it is difficult to insert the finger grip tape peeling section 16 into the gap G1 between the tape peeling section 16 and the opposed surface 16a thereof. Therefore, in the present embodiment, as shown in fig. 5, the width of the tape peeling section 16 is made wider than the width of the vertical seal section 12. The value of [ width of the tape peeling section 16/width of the longitudinal seal section 12 ] is, for example, 1.1 to 5, preferably 1.5 to 2.5. The value may specifically be, for example, 1.1, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, or may be in a range between any 2 values shown.
The width of the tape peeling section 16 is preferably 15mm to 50 mm. The width may specifically be, for example, 15, 20, 25, 30, 35, 40, 45, 50mm, or may be in a range between any of the 2 values shown. If the width of the tape peeling part 16 is too narrow, it is difficult to hold the tape peeling part 16, and if the width of the tape peeling part 16 is too wide, the manufacturing cost of the packaging bag 1 increases, and dust easily enters the gap G1. The tape peeling section 17 also has the same width.
(symbol description)
1: bag-making and filling film, 2: polyamide layer, 3: LLDPE layer, 4: easy-peel resin layer, 5: heat-seal layer, 7: cylindrical body, 10: packaging bag, 10a: packaging bag, 12: longitudinal seal portion, 13: lateral seal portion, 14: lateral seal portion, 15: overlapping section, 16: tape peeling section, 16a: opposed surface, 17: tape peeling section, 17a: opposed surface, 18: intersection part, 100: bag making and filling machine, 111: hopper, 112: molding machine, 113: longitudinal sealer, 114: conveying roller, 115: roller, 116: cross sealer, 118: extrusion and cutter, 118a: cutting knife, 119: a sensor, 120: discharge roller, 121: pay-out roller, 130: conveyor, F: roll-shaped coil material, W: and (4) the contents.
Claims (5)
1. A bag-making and filling method comprises a bag-making and filling step,
in the bag-making and filling step, after contents are filled into a cylindrical body formed by heat-sealing a bag-making and filling film into a cylindrical shape with a closed lower end, the upper end of the cylindrical body is heat-sealed to form a packaging bag filled with the contents,
the film is composed of only a coextruded layer formed by coextruding a plurality of resin layers,
the coextruded layer includes an easy release resin layer forming the innermost layer of the film,
the co-extruded layer comprises a heat-seal layer forming the outermost layer of the film,
the packaging bag is provided with a vertical sealing part which is heat-sealed for forming the tubular body by making the film into a tubular shape, and a horizontal sealing part which is heat-sealed for closing the lower end and the upper end of the tubular body,
the heat-seal layers of the outermost layers of the film are heat-sealed to each other at the intersection of the longitudinal seal and the transverse seal.
2. The bag-making and filling method of claim 1,
the co-extruded layer is provided with a polyamide layer, an LLDPE layer, and the easily peelable resin layer in this order.
3. The bag-making and filling method of claim 1,
the co-extrusion layer is provided with the heat seal layer, a polyamide layer, and the easy-to-peel resin layer in this order.
4. The bag-making and filling method of claim 1,
the heat-sealing layer contains polyolefin.
5. The bag-making filling method according to any one of claims 1 to 4,
the Young's modulus of the film is 100MPa or more.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-219608 | 2018-11-22 | ||
| JP2018219608 | 2018-11-22 | ||
| JP2019-209071 | 2019-11-19 | ||
| JP2019209071A JP7440737B2 (en) | 2018-11-22 | 2019-11-19 | Film for bag making and filling, bag making and filling method |
| PCT/JP2019/045673 WO2020105710A1 (en) | 2018-11-22 | 2019-11-21 | Form-fill-sealing film and form-fill-sealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113165779A CN113165779A (en) | 2021-07-23 |
| CN113165779B true CN113165779B (en) | 2023-02-24 |
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| CN201980076186.XA Active CN113165779B (en) | 2018-11-22 | 2019-11-21 | Bag making and filling method |
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| JP (1) | JP7440737B2 (en) |
| CN (1) | CN113165779B (en) |
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| JP2006281675A (en) * | 2005-04-01 | 2006-10-19 | Mitsubishi Plastics Ind Ltd | Easily opening co-extruded film, lid material and deep-drawn vessel using film |
| JP2013095475A (en) * | 2011-10-31 | 2013-05-20 | Kyoraku Co Ltd | Package and method for manufacturing the same |
| TW201615422A (en) * | 2014-07-23 | 2016-05-01 | Kyodo Printing Co Ltd | Easily peelable packaging bag |
| CN106255595A (en) * | 2014-04-28 | 2016-12-21 | 三得为株式会社 | Multi-layer sealed film |
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| JP3367348B2 (en) * | 1996-09-06 | 2003-01-14 | 東洋紡績株式会社 | Linear low density polyethylene film |
| JP2001048220A (en) * | 1999-08-06 | 2001-02-20 | Dainippon Printing Co Ltd | Cup lid material having re-sealability |
| US7338708B2 (en) * | 2003-03-05 | 2008-03-04 | Cryovac, Inc. | Thick shrink film having high oxygen transmission rate |
| JP5672060B2 (en) * | 2011-02-24 | 2015-02-18 | 東レフィルム加工株式会社 | Sealant film for polypropylene retort packaging and laminate thereof |
| EP2790918A1 (en) * | 2011-12-15 | 2014-10-22 | Windmöller & Hölscher KG | Film product for packaging products in sealed film packages |
| JP5926569B2 (en) * | 2012-02-04 | 2016-05-25 | 三菱樹脂株式会社 | Double bag packaging inflation film and double bag packaging |
| JP2014218292A (en) * | 2013-05-10 | 2014-11-20 | キョーラク株式会社 | Packaging bag |
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2019
- 2019-11-19 JP JP2019209071A patent/JP7440737B2/en active Active
- 2019-11-21 CN CN201980076186.XA patent/CN113165779B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006281675A (en) * | 2005-04-01 | 2006-10-19 | Mitsubishi Plastics Ind Ltd | Easily opening co-extruded film, lid material and deep-drawn vessel using film |
| JP2013095475A (en) * | 2011-10-31 | 2013-05-20 | Kyoraku Co Ltd | Package and method for manufacturing the same |
| CN106255595A (en) * | 2014-04-28 | 2016-12-21 | 三得为株式会社 | Multi-layer sealed film |
| TW201615422A (en) * | 2014-07-23 | 2016-05-01 | Kyodo Printing Co Ltd | Easily peelable packaging bag |
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| Publication number | Publication date |
|---|---|
| JP7440737B2 (en) | 2024-02-29 |
| JP2020090326A (en) | 2020-06-11 |
| CN113165779A (en) | 2021-07-23 |
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