CN101052574A - Plastic pouch and method of producing the same - Google Patents
Plastic pouch and method of producing the same Download PDFInfo
- Publication number
- CN101052574A CN101052574A CN200580036546.1A CN200580036546A CN101052574A CN 101052574 A CN101052574 A CN 101052574A CN 200580036546 A CN200580036546 A CN 200580036546A CN 101052574 A CN101052574 A CN 101052574A
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- CN
- China
- Prior art keywords
- plastic bag
- mentioned
- reflex part
- sealing
- sack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 239000004033 plastic Substances 0.000 title claims abstract description 217
- 238000000034 method Methods 0.000 title claims description 106
- 230000011514 reflex Effects 0.000 claims description 206
- 239000000463 material Substances 0.000 claims description 174
- 238000007789 sealing Methods 0.000 claims description 149
- 238000004519 manufacturing process Methods 0.000 claims description 125
- 230000015572 biosynthetic process Effects 0.000 claims description 60
- 238000010079 rubber tapping Methods 0.000 claims description 30
- 238000009408 flooring Methods 0.000 claims description 25
- 238000012546 transfer Methods 0.000 claims description 22
- 238000005452 bending Methods 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 18
- 238000011049 filling Methods 0.000 claims description 18
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- -1 polypropylene, propylene-ethylene copolymers Polymers 0.000 description 18
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
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- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
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- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
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Images
Landscapes
- Bag Frames (AREA)
- Package Specialized In Special Use (AREA)
Abstract
At least either of a front side film and a back side film that construct a plastic pouch is folded back along the entire length in the width direction of the pouch, and a peripheral section is heat sealed. By this, at least one folded back section that communicates with a pouch body is formed.
Description
Technical field
The present invention relates to the plastic sheeting peripheral part on two sides in the table of formation sack is sealed the formula that lies low plastic bag and the manufacture method thereof that forms.Plastic bag of the present invention is filled the contents such as retort pouch that contain liquid substance, solid matter or their compound, is suitable as micro-wave oven cooking bag.
Background technology
The packaging bag of having filled retort pouch, frozen food etc. and be sealed to form is heated with micro-wave oven, then be accompanied by heating, the aqueous vapor that is produced by content etc. rises bag pressure inside, packaging bag is broken, content disperses, can pollute simultaneously in the micro-wave oven, may cause harm such as burn human body.
, before above-mentioned packaging bag is carried out cooking with micro-wave oven, taked the packaging bag part method of sealing off in advance, perhaps perforate makes the aqueous vapor that produces in the packaging bag etc. be discharged to the outside thus, prevents the method for packaging bag broken bag on the packaging bag body for this reason.
But said method is cumbersome for ordinary consumer, and the aqueous vapor that is produced by the micro-wave oven heating is discharged to outside the packaging bag immediately simultaneously, and the hot digestion effect of aqueous vapor reduces, and flavour of food products reduces.
For addressing the above problem, press to rise automatically in when making the micro-wave oven heating in the bag and eliminate, people have proposed various being provided with according to pressing in the bag and have risen and the plastic bag of the mechanism of opening automatically.
The known above-mentioned plastic bag that is provided with the automatic tapping machine structure has following various forms: the vertical bag (for example with reference to TOHKEMY 2002-249176 communique or TOHKEMY 2003-192042 communique) that sack is erected automatically heat in micro-wave oven, the formula that lies low bag or the dichotomous bag that the automatic tapping machine structure is set in forked section make packaging bag lie low (for example with reference to TOHKEMY 2002-80072 communique, TOHKEMY 2001-106270 communique, the special fair 8-25583 communiques of Japan) such as the formula that lies low bags of heating like that in micro-wave oven.
In these sacks, consider from the angle of productive rate or cost, the most excellent is the sack of the formula of lying low, but the sack of the type when cooking with micro-wave oven and owing in press rise make the automatic opening of sack after, peristome stably can't be remained on a high position, the shortcoming that therefore has the content of sack to spray, spill by automatic peristome.
For this reason, use the peristome of sack for the micro-wave oven cooking of the formula that will lie low and keep high-order, someone has proposed to use the scheme (with reference to TOHKEMY 2003-170930 communique) of accessory appliancess such as individual packaging case, but it is owing to use the accessory appliances that separates with sack, complicated and make the cost raising.
Summary of the invention
The present invention is for eliminating above-mentioned prior art problems, its purpose is to provide and can produces with low-cost high-efficiency ground, when in micro-wave oven, keeping flat cooking, need not to use appurtenance also can make and stably remain on the high-order formula that lies low plastic bag because of pressing the automatic peristome that rises automatic opening in the sack.
The object of the present invention is to provide the manufacture method that the plastic bag of this sack can be provided efficiently.
Another purpose of the present invention is to provide manufacturing, the fill method that can make this sack efficiently, can fill the plastic bag of content efficiently.
In-depth studys such as the inventor, found that: the film that will constitute one of them side of plastic bag turns back across sack Width total length, and periphery is sealed, and forms the reflex part that is communicated with bag body, can address the above problem thus, thereby finish the present invention.
That is, adopted the formation of following 1-12 in the plastic bag of the present invention.
1. plastic bag is characterized in that: the film that will constitute at least one side of the surface film of plastic bag and the inside film turns back across plastic bag Width total length, and periphery is sealed, and forms the reflex part that at least one place is communicated with bag body thus.
2. 1 plastic bag is characterized in that: form reflex part on surface film that constitutes sack and the inside film.
3. 1 or 2 plastic bag is characterized in that: form reflex part in an end near sack.
4. 1 or 2 plastic bag is characterized in that: form reflex part in two ends near sack.
5. each plastic bag among the 1-4, it is characterized in that: the film that will constitute plastic bag carries out zigzag and turns back, and forms reflex part.
6. each plastic bag among the 1-4, it is characterized in that: the film that will constitute plastic bag carries out zigzag and turns back, and then turns back into anti-zigzag, forms reflex part thus.
7. each plastic bag among the 1-6, it is characterized in that: in the perimeter of reflex part, on the film that the more close internal layer of outermost film than surface film that is disposed at the formation perimeter and the inside film exists, aperture portion is set, via this aperture portion, will be configured in that the outermost film in two sides seals in the table.
8. each plastic bag among the 1-7 is characterized in that: near the end of the sack of reflex part or form near it and make this sack automatic tapping machine structure of opening automatically when heating with micro-wave oven.
9. 8 plastic bag is characterized in that: be adjacent to form the automatic tapping machine structure with the perimeter of sack end.
10. 9 plastic bag, it is characterized in that: the perimeter in the sack end is provided with the jut of front end in sack, forms the automatic tapping machine structure thus.
11. 8 plastic bag is characterized in that: the automatic tapping machine structure and the perimeter of sack end are separated formation.
12. each plastic bag among the 8-11 is characterized in that: the automatic tapping machine structure is the vapor seal portion that removes with weakenings.
Plastic bag of the present invention need not must append parts or step as vertical bag or branch's formula bag, gets final product High-efficient Production with the low cost of the formula bag that approaches to lie low.In addition, when lying against in the micro-wave oven cooking, do not use appurtenance can so that by press in the bag rise and automatically the automatic peristome of opening stably keep high-order, can prevent that content is by the peristome ejection or spill.
Learn by the present invention, for this plastic bag, in order positively to make automatic peristome keep high-order, and reflex part can not given prominence to laterally yet and causes obstacle when filling content for the breakage that prevents reflex part heat-sealing place or when not needing automatic peristome is set or when filling back circulation of commodities, more efficient methods is that the two ends, the outside with this plastic bag reflex part Width are fixed on the sack, thereby has realized the manufacture method efficiently of above-mentioned plastic bag.The manufacture method of plastic bag of the present invention adopts the formation of following 13-26.
13. possess the reflex part of the Width of at least one place and internal communication at least one side of surface material and the inside material, periphery is heat-sealed, thereby the sealing outside width direction two ends of this reflex part and above-mentioned surface material or the inside material are fixed made plastic bag simultaneously, turn up at least one side's of above-mentioned surface material and above-mentioned the inside material a part this moment, forms above-mentioned reflex part.
Manufacture method according to this plastic bag, the reflex part that possesses the Width of at least one place and internal communication at least one side of surface material or the inside material, periphery is heat-sealed, thereby the sealing outside width direction two ends of this reflex part and above-mentioned surface material or the inside material are fixed made plastic bag simultaneously, turn up at least one side's of above-mentioned surface material and above-mentioned the inside material a part this moment, form above-mentioned reflex part, by surface material or the inside material any one party or two sides' a part is turned up the formation reflex part, can on surface material into the net by continuous transmission or indexing transfer or the inside material, form reflex part easily.
14. 13 formation is characterized in that: on the above-mentioned table the inside material that transmits continuously, carry out the formation of above-mentioned reflex part.
According to the manufacture method of this plastic bag, on the above-mentioned table the inside material that transmits continuously, carry out the formation of above-mentioned reflex part, can form reflex part easily by the table the inside material of continuous transmission.
15. 13 formation is characterized in that: the above-mentioned table the inside material that will transmit continuously carries out the formation of above-mentioned reflex part in the mode of indexing transfer.
According to the manufacture method of this plastic bag, be that the above-mentioned table the inside material that will transmit continuously carries out the formation of above-mentioned reflex part in the mode of indexing transfer, even the table that transmits continuously the inside material can simplyr just form reflex part by indexing transfer.
16. each formation among the 13-15 is characterized in that: at two places of above-mentioned table the inside material any one party or respectively each place forms above-mentioned reflex part, makes with the double-bank form.
Manufacture method according to this plastic bag, at two places of any one party of above-mentioned table the inside material or each one sentence the double-bank form and form above-mentioned reflex part, by forming the reflex part at table material two places, the inside or each place, can make the double-bank manufacture method of on Width, making each two row plastic bag more simple.
17. each formation among the 13-16 is characterized in that: except that the material of above-mentioned table the inside, also use turning back of above-mentioned reflex part of formation to make with flooring.
Manufacture method according to this plastic bag, except that the material of above-mentioned table the inside, also use turning back of above-mentioned reflex part of formation to make with flooring, be not only table the inside material, can also make up turning back of another kind of material at reflex part and make, can use common vertical bag to make like this with Bag Making Machine with flooring.
18. each formation among the 13-15 is characterized in that: three places of any one party of material or two places of any one party and the opposing party's a place form above-mentioned reflex part inside above-mentioned table, with the form manufacturings of three row.
Manufacture method according to this plastic bag, three places of any one party of material or two places of any one party and the opposing party's a place form above-mentioned reflex part inside above-mentioned table, form manufacturing with three row, by forming three place's reflex parts, can make that to make the manufacturing of three row forms of three row plastic bags at Width more simple.
19.13-18 in each formation, it is characterized in that: the overbending direction of the above-mentioned reflex part direction according to equidirectional, different directions or their combination is formed.
According to the manufacture method of this plastic bag, the overbending direction of the above-mentioned reflex part direction with equidirectional, different directions or their combination is formed, so just can make the variant plastic bag of overbending direction of reflex part.
20. each formation among the 13-19 is characterized in that: divide in time successively to form above-mentioned reflex part.
According to the manufacture method of this plastic bag, divide in time successively to form above-mentioned reflex part, need not to form together reflex part, by dividing successively in time, also can easily form reflex part for the flooring that has applied tension force.
21. each formation among the 13-20 is characterized in that: the sealing outside width direction two ends of above-mentioned reflex part fixedly be punching on by the two unilateral materials part of above-mentioned reflex part clamping, fix by heat-sealing then.
Manufacture method according to this plastic bag, the sealing outside width direction two ends of above-mentioned reflex part fixedly be punching on by the two unilateral materials part of above-mentioned reflex part clamping, fix by heat-sealing then, the inside of top and bottom material is contacted and seal fixing.
22. 21 formation is characterized in that: form above-mentioned hole respectively or across two unilateral materials at above-mentioned two unilateral materials or the above-mentioned flooring that turns back.
According to the manufacture method of this plastic bag, form above-mentioned hole respectively or across two unilateral materials at above-mentioned two unilateral materials or the above-mentioned flooring that turns back, the hole that forms across two unilateral materials can make and contact between the inside of flooring up and down and seal fixing.
23. 21 or 22 formation is characterized in that: in the continuous transmission of the above-mentioned table the inside material or the flooring that turns back or carry out the formation in above-mentioned hole in the indexing transfer.
Manufacture method according to this plastic bag, in the continuous transmission of the above-mentioned table the inside material or the flooring that turns back or carry out the formation in above-mentioned hole in the indexing transfer, the hole can be formed under transmission or any situation of indexing transfer continuously, the fixing of reflex part can be carried out.
24. each formation among the 13-20 is characterized in that: the arbitrary form by adhesives, mechanical fixation, welding carries out sealing outside width direction two ends fixing of above-mentioned reflex part.
Manufacture method according to this plastic bag, arbitrary form by adhesives, mechanical fixation, welding carries out sealing outside width direction two ends fixing of above-mentioned reflex part, can adopt the arbitrary form of weldings such as mechanical fixation, ultrasonic sealing such as adhesives, nail rifle or rivet to fix.
25. each formation among the 13-24 is characterized in that: inboard formation can be by the automatic peristome of in-to-in vapour pressure opening in the heat sealed perimeter portion of above-mentioned plastic bag.
According to the manufacture method of this plastic bag, can form automatic peristome easily by the automatic peristome of in-to-in vapour pressure opening in the inboard formation of the heat sealed perimeter portion of above-mentioned plastic bag, can carry out the micro-wave oven heating easily.
26. 25 formation is characterized in that: when carrying out above-mentioned periphery heat-sealing, form heat-sealing portion, in this heat-sealing portion, open through hole then, form above-mentioned automatic peristome.
According to the manufacture method of this plastic bag, when carrying out above-mentioned periphery heat-sealing, form heat-sealing portion, in this heat-sealing portion, open through hole then, form above-mentioned automatic peristome, can form automatic peristome by the through hole that forms in heat-sealing portion thus.
The manufacturing of plastic bag of the present invention, fill method adopt following formation 27-32.
Possesses reflex part with the Width of internal communication 27. be manufactured on a side of table the inside material, simultaneously that these reflex part Width two ends and above-mentioned table the inside material is fixing plastic bag and when filling content, two ends of Width of plastic sheeting are superimposed, make it can form the sealing of above-mentioned reflex part and front end thereof, leading section pillow formula that only will this superimposed part seals, make roughly cylindrical body, cardinal extremity bending that then will this superimposed part, fixing two ends simultaneously, form above-mentioned reflex part, then make this roughly front end osed top forward end seal of cylindrical body, fill content, make the roughly back-end sealing of the back-end closure of cylindrical body again, cut off then.
Manufacturing according to this plastic bag, fill method, a side who is manufactured on table the inside material possesses the reflex part with the Width of internal communication, simultaneously with these reflex part Width two ends and the fixing plastic bag of above-mentioned table the inside material, and when filling content, two ends of Width of plastic sheeting are superimposed, make it can form the sealing of above-mentioned reflex part and front end thereof, leading section pillow formula that only will this superimposed part seals, make roughly cylindrical body, cardinal extremity bending that then will this superimposed part, fixing two ends simultaneously, form above-mentioned reflex part, then make this roughly front end osed top forward end seal of cylindrical body, fill content, make the roughly back-end sealing of the back-end closure of cylindrical body again, cut off then, by plastic bag Width both ends are superimposed, carry out the sealing of reflex part and front end thereof by the sealing of pillow formula, can make the sack that possesses reflex part, by between forward end seal and back-end sealing, filling content, can make the filling of sack limit in the limit.
28. 27 formation is characterized in that: coating adhesive before above-mentioned superimposed part bending, carry out the two ends of above-mentioned reflex part and fix.
According to manufacturing, the fill method of this plastic bag, coating adhesive before above-mentioned superimposed part bending carries out the two ends of above-mentioned reflex part and fixes, and by bending after coating adhesive, can carry out the fixing of reflex part two ends easily.
29. 27 formation is characterized in that: after with above-mentioned superimposed part bending, carry out the fixing of above-mentioned reflex part two ends by mechanical fixation or welding.
Manufacturing, fill method according to this plastic bag, after with above-mentioned superimposed part bending, carry out the fixing of above-mentioned reflex part two ends by mechanical fixation or welding, can fix easily by the fusion of mechanical fixation such as nail rifle or rivet or ultrasonic sealing etc.
30. each formation among the 27-29 is characterized in that: with the back-end sealing of above-mentioned forward end seal and above-mentioned back-end sealing and the above-mentioned roughly cylindrical body of carrying out earlier and after the forward end seal of the above-mentioned roughly cylindrical body of carrying out carry out simultaneously.
Manufacturing, fill method according to this plastic bag, with the back-end sealing of above-mentioned forward end seal and above-mentioned back-end sealing and the above-mentioned roughly cylindrical body of carrying out earlier and after the forward end seal of the above-mentioned roughly cylindrical body of carrying out carry out simultaneously, by carrying out forward end seal and back-end sealing simultaneously, can make efficiently with a sealing arrangement.
31. each formation among the 27-30 is characterized in that: on material in the above-mentioned table, form and to pass through the in-to-in steam and the automatic peristome of opening.
According to manufacturing, the fill method of this plastic bag, on material in the above-mentioned table, form and can pass through the in-to-in steam and the automatic peristome of opening, by forming automatic peristome, promptly use the micro-wave oven heating that the rising of internal pressure is eliminated automatically by peristome.
32. 31 formation is characterized in that: when carrying out above-mentioned forward end seal and above-mentioned back-end sealing, form heat-sealing portion, open through hole in this heat-sealing portion then, form above-mentioned automatic peristome.
Manufacturing, fill method according to this plastic bag, when carrying out above-mentioned forward end seal and above-mentioned back-end sealing, form heat-sealing portion, open through hole in this heat-sealing portion then, form above-mentioned automatic peristome, by when carrying out above-mentioned forward end seal and above-mentioned back-end sealing, forming heat-sealing portion and forming through hole, can form automatic peristome easily.
The accompanying drawing summary
Fig. 1 is the step mode chart that an example of plastic bag of the present invention is made in explanation.
Fig. 2 is the planar view by the being seen plastic bag that is obtained by the step of Fig. 1 in inboard.
Fig. 3 is the mode chart of the state of expression when the sack of Fig. 2 is heated in micro-wave oven.
Fig. 4 is the step mode chart that another example of plastic bag of the present invention is made in explanation.
Fig. 5 is the planar view of the plastic bag that obtained by the step of Fig. 4 by inboard finding.
Fig. 6 is the step mode chart that another example of plastic bag of the present invention is made in explanation.
Fig. 7 is the planar view of the plastic bag that obtained by the step of Fig. 6 by inboard finding.
Fig. 8 is the step mode chart that the reflex part of the sack that forms Fig. 7 is described.
Fig. 9 is the step mode chart that another example of plastic bag of the present invention is made in explanation.
Figure 10 is the planar view of the plastic bag that obtained by the step of Fig. 9 by inboard finding.
Figure 11 is the mode chart of the state of expression when the sack of Figure 10 is heated in micro-wave oven.
Figure 12 is the summary pie graph of the conventional manufacturing line of the common formula that lies low sack.
Figure 13 is a manufacturing object plastic bag of the present invention, (a) is the block diagram of surface material, (b) is the block diagram of the inside material, (c) is the ground plan of assembled state, (d) is the block diagram of micro-wave oven heated condition.
Figure 14 is the step diagrammatic illustration figure of an embodiment of the manufacture method of plastic bag of the present invention.
Figure 15 is the configuration diagrammatic illustration figure that is used for fixing the hole of reflex part in the embodiment of manufacture method of plastic bag of the present invention.
Figure 16 is peristome configuration diagrammatic illustration figure automatically in the embodiment of plastic bag manufacture method of the present invention.
Figure 17 is the diagrammatic illustration figure of other fixing means of reflex part in the embodiment of manufacture method of plastic bag of the present invention.
Figure 18 is another embodiment of plastic bag manufacture method of the present invention, is respectively the diagrammatic illustration figure of step.
Figure 19 is the instruction diagram of step diagrammatic illustration figure and cut-off parts in the embodiment of manufacture method of plastic bag of the present invention.
Figure 20 is the sack diagrammatic illustration figure and the step diagrammatic illustration figure of another embodiment in the plastic bag manufacture method of the present invention.
Figure 21 is the summary pie graph and the part enlarged drawing of manufacturing line in the embodiment of manufacturing, fill method of plastic bag of the present invention.
Figure 22 is a plastic bag, (a) is the block diagram of membraneous material, (b) is the ground plan of assembled state, (c) is the block diagram of micro-wave oven heated condition.
The specific embodiment
Below embodiment of the present invention are elaborated.
The plastic sheeting that constitutes plastic bag of the present invention can use the plastic material with heat sealability that uses usually in the manufacturing of packaging bag.Described plastic material for example has: contain the single thin film of the thermoplastic base resin with heat sealability, thermoplastic base resin that the sheet material class maybe will have heat sealability and the laminated multilayer film that form of other thermoplastic base resin etc.
Above-mentioned plastic material with heat sealability for example has known low density polyethylene (LDPE), wire low density polyethylene (LDPE), medium density polyethylene, high density polyethylene (HDPE), polypropylene, propylene-ethylene copolymers, vinyl-vinyl-acetic ester copolymer, by the polyamide of ethylenic unsaturated carboxylic acid and anhydride grafting modified ethylene series resin, low melting point and even low softening points such as olefin resin thereof and copolyamide resin, polyester and copolymer polyester resin, polycarbonate resin etc.
Can use the film that contains the thermoplastic base resin that has or do not have heat sealability or various barrier films etc. with laminated other plastic material of the plastic material with heat sealability.
Above-mentioned thermoplastic base resin for example has: crystalline polypropylene, crystallinity propylene-ethylene copolymers, crystallinity Polybutene-1, crystallinity poly 4-methylpene-1, low-, in-or high density polyethylene (HDPE), vinyl-vinyl-acetic ester copolymer (EVA), EVA are saponified, ethylene-ethyl acrylate copolymer (EEA), ionomer olefin copolymer polyolefinss such as (ionomers); Aromatic ethenyl copolymer such as polystyrene, SB; Vinyl halides such as polyvinylchloride, permalon based polyalcohol; Polyacrylates is a resin; Nitrile polymer such as acrylonitritrile-styrene resin, acrylonitrile-styrene-butadiene copolymer; Polyesters such as polyethylene terephthalate, poly terephthalic acid tetramethylene ester; Various polycarbonate; Fluorine resin; Thermoplastic base resins such as poly-acetal such as polyoxyethylene.These thermoplastic base resins can be separately or two kinds or above blending are used, and also can cooperate various additives to use.
Various barrier films can be the mylars of steam coating silicon dioxide, the mylar of evaporation aluminium oxide, the nylon film of steam coating silicon dioxide, the nylon film of evaporation aluminium oxide, the polypropylene film of evaporation aluminium oxide, the mylar of evaporation carbon film, the nylon film of evaporation carbon film, and on basement membranes such as mylar or nylon film the dual evaporated film of evaporation aluminium oxide and silicon dioxide simultaneously, also have nylon 6/ m-xylene diamine nylon 6 co-extrusion films, polypropylene/ethylene-ethenol copolymer co-extrusion film, the polypropylene film of polyethylene coating, the mylar of polyethylene coating, the nylon film of polyethylene coating, the resin-coated mylar of polyacrylic, the resin-coated polypropylene film of polyacrylic, the mylar of polyglycolic acid resin coating, the nylon film of polyglycolic acid resin coating, the film of the organic resin coatings such as polypropylene film of polyglycolic acid resin coating, and the mixed coating material that will contain organic resin material and inorganic material is coated on mylar or nylon film, the film that forms on the basement membranes such as polypropylene film etc.These barrier films can be separately or with two kinds or above being used in combination.
Can also use the film that contains the oxygen uptake resin or the laminate film of oxygen uptake resin and other thermoplastic base resin with laminated other plastic material of the plastic material with heat sealability.
The oxygen uptake resin can use (1) resin itself to have the resin of oxygen uptake, perhaps uses (2) to cooperate the resin combination of oxygen absorbent in the thermoplastic base resin that has or do not have oxygen uptake.The thermoplastic base resin that constitutes oxygen-absorbing resin composition (2) is not particularly limited, and has the thermoplastic base resin of resistance oxygen or do not have the thermoplastic base resin that hinders oxygen all can use.When the thermoplastic base resin that constitutes resin combination (2) uses resin itself to have the resin of oxygen uptake or resistance oxygen, by with the oxygen uptake combination of effects of bringing by oxygen absorbent, can effectively prevent the effect of block, therefore preferably to the intrusion of internal tank.
The form that resin itself has oxygen uptake for example has the oxidizing reaction of utilizing resin.Can use that for example poly-butadiene, polyisoprene, polypropylene, ethene-carbon monoxide multipolymer, 6-nylon, 12-nylon, a benzene two methanediamines (MX) nylon etc. add in polyamide-based as light sensitizer gained such as the organic acid salt that contains transition metal such as cobalt, rhodium, copper of oxide catalyst or benzophenone, acetophenone, chlorine ketone at the organic material of oxidisability.When using these oxygen-absorbing materials,, effect is further showed by high-energy rays such as irradiation ultraviolet radiation, electron raies.
The oxygen absorbent that is engaged in the thermoplastic base resin can use the whole oxygen absorbents that in the past used in this kind purposes, usually preferred reducibility and water-fast basically oxygen absorbent, its preferred example are with the metal powder that will have reducibility for example reducibility iron, reducibility zinc, reducibility tin powder; The metal low oxide is FeO, Fe for example
3O
4The reducing metal cmpd for example one or more compositions that combine of carbide of iron, iron suicide, carbonyl iron, ferrous hydroxide etc. as the oxygen absorbent of main component.Particularly preferred oxygen absorbent has reducibility iron, for example with the ferric oxide that obtains in the coke reduction iron and steel manufacturing step, the sponge iron that generates is pulverized, and carries out the formed reducibility iron of essence reduction in hydrogen or decomposition ammonia; Iron is separated out in electrolysis in the ferric chloride in aqueous solution that obtains from acid pickling step, carries out reducibility iron that smart reduction obtains etc. after the pulverizing.
These oxygen absorbents also can be as required and the hydroxide that contains alkalies, alkaline earth, carbonate, sulfite, thiosulfate, tertiary phosphate, electrolytical oxidation accelerator such as two generation phosphate, acylate, halide etc., and auxiliary agent such as active carbon, activated alumina, activated clay is used in combination.The oxidation accelerator that particularly preferred oxidation accelerator has sodium chloride, calcium chloride or they are combined.
When reducibility iron and oxidation accelerator are used in combination, both proportionings are to be 100 weight portions with total amount, preferred reducibility iron is that 99-80 weight portion, oxidation accelerator are the 1-20 weight portion, and preferred especially reducibility iron is that 98-90 weight portion, oxidation accelerator are the 2-10 weight portion.
Other oxygen absorbent also has the high molecular compound that has polyatomic phenol in the skeleton for example to contain phenol resin of polyatomic phenol etc.Also can preferably use water-soluble substances ascorbic acid, arabo-ascorbic acid, tocopherols and their salt etc.In these oxygen uptake materials, preferred especially reducibility iron and ascorbic acid based compound.
The resin that above-mentioned resin itself can also be had oxygen uptake is engaged in the thermoplastic base resin as oxygen absorbent.
The common mean grain size of above-mentioned oxygen absorbent is 50 μ m or following, especially preferably has 30 μ m or following particle diameter.Necessarily require when transparent or semitransparent, preferred mean grain size is 10 μ m or following, especially preferably has 5 μ m or following particle diameter.Oxygen absorbent preferably cooperates with the proportioning of 1-70 weight %, particularly 5-30 weight %.
Among the present invention, will seal according to conventional approach, constitute packaging pouch for microwave oven thus by not stretching of constituting of above-mentioned plastic material or single shaft or biaxial stretch-formed film.Film is when having the thermoplastic base resin of heat sealability and not having the laminate film of thermoplastic base resin of heat sealability, and the thermoplastic resin heat-sealing with heat sealability inside.
Below, with reference to the accompanying drawings the formation that lies low the formula plastic bag of the present invention is described.Following concrete example also is not used in qualification the present invention.
Fig. 1-Fig. 3 is the figure of an example of expression plastic bag of the present invention, and Fig. 1 is the mode chart of the manufacturing step of explanation sack, and Fig. 2 is the planar view by inboard finding sack.
Fig. 3 is the mode chart of expression with this sack heated state in micro-wave oven, (a) represents the not state of sack in cooking of opening, (b) expression bag section opening, the state that the cooking finishes.
This sack 1 following manufacturing: the film 11 and the film 12 inside the formation sack that will constitute the sack surface are superimposed, and peripheral part is sealed.At this moment, the film 12 that constitutes the sack the inside is turned back into zigzag across sack Width total length,, all the other peripheries are sealed, form the reflex part 2 that is communicated with bag body except filling the minor face end of mouth 4 as content.In addition, with the minor face end of filling mouthful 4 relative sides, it is outstanding to make perimeter be the U font towards the sack inboard, aperture portion 7 (through hole) is set in protrusion 6, form row's vapor seal portion thus, be formed in when sack being heated the automatic tapping machine structure 5 of opening automatically with micro-wave oven with weakenings.
The formation method of weakenings can certainly adopt other known method that half through hole, finedraw or unsealing portion etc. replace perforate (through hole) is set.
Content such as filling food in this bag 1 will fill mouthful 4 heat-sealings then, will carry out sack that boiling sterilization handles and lie in and carry out cooking in the micro-wave oven, the aqueous vapor that produces by content etc. make sack in press liter, sack expands.Being located in the reflex part 2 at 12 places, sack the inside also encroached water steam this moment, is starting point with reflex part 2, and (with reference to Fig. 3 (a)) holded up in the sack end that is provided with automatic tapping machine structure 5.
Be accompanied by sack 1 in press liter, stress concentration is to the front end of the protrusion 6 of automatic tapping machine structure 5, sealing is peeled off to the sack lateral direction slowly, when peeling off when reaching perforate 7 places, the bag section opening, aqueous vapors etc. are discharged outside by perforate 7, and the internal drop of sack is low.At this moment, the reflex part 2 that is located at sack the inside 12 plays the effect of support, has made out the automatic tapping machine structure 5 of mouth stably remain on a high position (with reference to Fig. 3 (b)).
Like this, in this sack 1, with in the micro-wave oven cooking or behind the end of cooking, the automatic tapping machine structure 5 that forms on sack remains a high position, can prevent the ejection of content or spill.
Fig. 4 and Fig. 5 are the figure of another example of expression plastic bag of the present invention, and Fig. 4 is the mode chart of the manufacturing step of explanation sack, and Fig. 5 is the planar view by the inboard being seen sack of sack.
In this sack 21, the film 12 that constitutes the sack the inside is turned back into zigzag across sack Width total length, and then turn back into anti-zigzag, form reflex part 2 thus.In addition, make perimeter protrude the U font towards the sack inboard, the perforate 7 of setting and sack external communications in protrusion 6 forms automatic tapping machine structure 5.Other of sack 21 constitutes with the sack of Fig. 1-Fig. 3 same.
In this sack 21, by film being turned back in the both sides of reflex part 2, with sack 21 usefulness micro-wave oven cookings the time, make the volume increase of open reflex part 2 owing to the intrusion of aqueous vapor, it is that starting point is holded up that the sack end is easy to reflex part 2, can make automatic tapping machine structure 5 stably keep higher position.
Fig. 6-Fig. 8 is another example figure of expression plastic bag of the present invention, and Fig. 6 is the mode chart of the manufacturing step of explanation sack, and Fig. 7 is that Fig. 8 is the amplification mode figure that the step of the reflex part that forms sack is described by the planar view of table side finding sack.
This sack 31 be with constitute the film 11 on sack surface and constitute the inside film 12 both on same position, turn back into anti-Z type and Z type respectively, thus at the two sides of sack formation reflex part 32,32.
Forming this reflex part 32,32 o'clock, as Fig. 8 finding, be arranged at the outermost film of surface film 11 that constitutes perimeter 3,3 than configuration and the inside film 12 on the film of internal layer aperture portion 33 (this example amounts to everywhere) is set, the two sides is configured in outermost film 11,12 and seals in will showing via this aperture portion 33.
By above-mentioned formation is made in the heat-sealing of reflex part 32, can improve the heat seal strength of reflex part 32,32 perimeter 3, when sack 31 usefulness micro-wave ovens are carried out cooking, can guarantee that the sack end holds up.
Also be applicable to the sack that only on the film of the inside of sack, forms Fig. 1-Fig. 5 of reflex part in the above-mentioned formation that aperture portion is set on the film that is positioned at reflex part perimeter internal layer.
In this sack 31, as automatic tapping machine structure 35, the film on two sides seals in will showing on the position of leaving perimeter 3, and perforate 37 (through hole) is set in this heat-sealing portion 36, can form the vapor seal portion 36 that removes with weakenings 37.
The formation method of weakenings 37 certainly adopts half through hole, finedraw or unsealing portion to replace perforate (through hole) to wait other known method.
Fig. 9-Figure 11 is the figure of other example of expression plastic bag of the present invention, and Fig. 9 is the mode chart of explanation sack manufacturing step, and Figure 10 is the planar view by inboard finding sack, and Figure 11 is the mode chart of expression with sack heated state in micro-wave oven.
In this sack 42, in position near an end of sack, the film 12 that constitutes the sack the inside is turned back into zigzag across the Width total length of sack, form the 1st reflex part 42 thus, anti-zigzag is turned back into film 12 in position at the close other end of sack, forms the 2nd reflex part 42.
In two ends of sack 42, the vapor seal portion 46 that removes with the weakenings 47 that is formed by perforate is set respectively on the position of leaving perimeter 3, form automatic tapping machine structure 45,45 thus.
This sack 41 is lain in heating in the micro-wave oven, the aqueous vapor that produces by content etc. make sack 41 in press liter, sack 41 expands.This moment, aqueous vapor also invaded in the reflex part 42,42, and the both sides of sack 41 are that starting point is holded up with reflex part 42,42, and automatic tapping machine structure 45,45 keeps high-order (with reference to Figure 11) respectively.Automatic tapping machine structure 45,45 openings, the internal drop of sack 41 is low, even the cooking is finished, sack 41 still keeps this shape with the state that dwindles.Therefore, this sack 41 also can use as pallet.
In above-mentioned each example, be that the plastic bag of the present invention that is provided with the automatic tapping machine structure on sack is illustrated, also above-mentioned automatic tapping machine structure can be set and constitute plastic bag with reflex part of the present invention.
The automatic tapping machine structure that adopts among the present invention is not particularly limited, it is outstanding for example can be that perimeter with sack is U font and vee shape towards the sack inboard, unsealing portion with the sack exterior is set in protrusion, this unsealing portion is opened constitutes the automatic tapping machine structure.Can also except that vapor seal portion, use the material different to constitute the known the whole bag of tricks of relevant automatic tapping machine structure such as automatic tapping machine structure with sack.
The material of the film of the size of certain plastic bag, shape or formation sack etc. can suitably be selected.
And adaptable content can be headed by the food of handling with boiling sterilization, can be need not to carry out frozen food that boiling sterilization handles etc., need be when using by all food of micro-wave oven heating.
With reference to the accompanying drawings the embodiment of the manufacture method of plastic bag of the present invention is described below.
At first, for the conventional manufacturing line of the common formula that lies low, the double-bank situation of making 2 sacks to the time shown in Figure 12 describes, this is a blank 101 of the plastic sheeting lamilated body that the inside at least has a Thermoadhesive being made web-like, by debatching roller mechanism 102 blank 101 is become plumbness by the horizontality debatching, transmit simultaneously, cut with laser cutting machine 103, two films 104,105 up and down that relative mask has Thermoadhesive are made in horizontal transmission then.
These two films 104,105 are respectively via the dance roller 106 of indexing transfer, transmit by feeding roller 107, print the location, superimposed, sealing arrangement 108 in heat-sealing usefulness makes sack bottom and the sealing of sack both sides, be cut into sack respectively in cutting unit 109 then, make two row sacks simultaneously.
Illustrated by plastic bag such as Figure 13 that above-mentioned manufacturing line is made.
Figure 13 is a plastic bag, (a) is the block diagram of surface material, (b) is the block diagram of the inside material, (c) is the ground plan of assembled state, (d) is the block diagram of heated condition in micro-wave oven.
For example as shown in figure 13, this plastic bag 110 is made of surface material 111 and the inside material 112, the pars intermedia of the inside material 112 is provided with the reflex part 113 of Width, slightly be zigzag and form by the inside material 112 is bent in (positions on the inside material 112 length directions) among the direction vertical with width, the periphery heat-sealing forms sealing 114, in the sack monomer before filling content, a limit of the bottom of sack does not seal, and forms to fill mouth 115.
In this sack 110, the Width two ends 113a in the outside of the sealing 114 of reflex part 113 and the inside material 112 are fixing.
Making filling will be with the sack of the content of micro-wave oven heating the time, as required because of in press that to rise the peristome 116 of opening automatically be that form with the through hole that connects heat-sealing portion 117 forms, for example the heat-sealing portion 114 with heat-sealing portion 117 and bag perimeter portion separates formation, forms peristome 116 on this part.
In the above-mentioned sack 110, because the reflex part 113 of the Width of formation and internal communication among a flooring 112 of the formula of lying low, therefore by interior pressure this reflex part 113 is expanded, increase with the flooring 112 of width vertical direction, hold up, even when possessing automatic peristome 116, also can remain on a high position (with reference to Figure 13 (d)).
Below, during sack 110 that its outboard end 113a is fixing, the fixing means of the method for making of reflex part 113 and reflex part 113 two ends 113a has a significant impact production efficiency when manufacturing possesses above-mentioned reflex part 113.
As shown in figure 14, in the manufacture method 120 of plastic bag of the present invention, for example be bent to form reflex part 123, make under the double-bank situation of two sacks simultaneously in a part with the surface material 121 in surface material 121 and the inside material 122, on the material 121,122 of table the inside, with the bottom of sack outwardly, relative, the transversely arranged state manufacturing of head.
In this manufacture method 120, by manufacturing line etc. as shown in Figure 12, the plastic sheeting lamilated body that the inside has Thermoadhesive is cut off, with mode feed relative between the inside, as surface material 121 and the inside material 122, be used to seal the fixedly perforation processing of the hole 123b of the two ends 123a of reflex part 123 with this.
Shown in Figure 15 (a), the perforation processing that is used to seal the two ends 123a that fixes this reflex part 123 is machining hole 123b on two unilateral material 121a, the 121b of surface material 121 inboards of clamping by the quilt table the inside material 121,122 that is bent to form, surface material 121 and the inside material 122 can be fixed by the two ends 123a of heat-sealing with reflex part 123 via hole 123b direct contact thus.
Shown in Figure 15 (b), the hole 123b that is used to seal the two ends 123a that fixes this reflex part 123 forms circular hole respectively on two unilateral material 121a, 121b, perhaps form the oblong hole 123b across two unilateral material 121a, 121b.
Shown in Figure 15 (c), form hole 123b in mode across the sack of on manufacturing line, successively making, the result forms semicircle or half-elliptic hole 123b on each sack, at this moment, the platform number that is provided with of perforating device can be reduced by half.
Then, surface material 121 is carried out two row bendings, form reflex part 123, the longitudinal sealing 124a of the periphery of sack and transverse sealing 124b are undertaken by sealing 124 then, make and fill mouthful 125 openings, the end 123a of reflex part 123 also is fixed by transverse sealing 124b via hole 123b simultaneously.
Periphery to sack seals at 124 o'clock, can seal 124 and the heat-sealing 126 of peristome automatically simultaneously with the approaching any one party of longitudinal sealing 124a and transverse sealing 124b.
Promptly, shown in Figure 16 (a), when the heat-sealing 126 that is used to form automatic peristome 127 is positioned at the angle portion of longitudinal sealing 124a and transverse sealing 124b, can in arbitrary step of longitudinal sealing 124a or transverse sealing 124b, carry out simultaneously, adjacently with the central portion of the longitudinal sealing 124a shown in Figure 16 (b) seal at 126 o'clock, can when carrying out longitudinal sealing 124a, carry out.
Form heat seal lands by the heat-sealing 126 that is used to form automatic peristome, on heat seal lands, carry out perforate processing, form automatic peristome 127.
Cut off by the cutting unit then, sack is separated, make two row simultaneously.
Can make the plastic bag that double-bank possesses reflex part 123 easily thus.
The perforate procedure of processing that is used for fixing the hole 123b of reflex part 123 two ends 123a can also can be carried out with tapping and plugging machine in indexing transfer by carrying out with rotary cutter etc. in material 121, the 122 continuous transfer step of table the inside.
The part of this surface material 121 bending and the reflex part 123 that forms can be to bend in the continuous transmission of surface material 121, also can be by manufacturing indexing transfer states such as dance rollers, bending then, if bending in transmitting continuously, then can guarantee to bend the stability of step, preferred.
And, be provided for the perforate procedure of processing of the fixing hole 123b of the two ends 123a of reflex part 123, to being clipped on two surface materials 121 between the reflex part 123 perforate and heat-sealing fixedly the time (situation shown in Figure 14), can be by bending surface material 121 after indexing transfer, this can utilize the indexing transfer state by actv., makes efficiently.
The situation that fixedly being not limited to of the two ends 123a of reflex part 123 forms hole 123b and carry out simultaneously with the heat-sealing 124 of periphery, also can be as shown in figure 17, adhesivess 128 such as use hot melt adhesive are fixed, can also carry out the mechanical fixation of mechanical fixation by nail rifle or rivet etc., perhaps carry out welding etc. by ultrasonic sealing, be not limited to these, also can use other fixing means to fix.
In this embodiment, if double-bank situation, then form two place's reflex parts 123 on the surface material 121, also two places on the inside material 121 can be bent to form reflex part 123, can also on surface material 121 and the inside material 122, distinguish each and bend place formation reflex part 123.
The direction balanced configuration of the reflex part 123 that two row can be turned up respectively also can be a symmetrical arrangements.
When two row reflex parts 123 being bent, need not two row are turned up simultaneously, can separately successively turn up the time, as long as before sealing 124, form two row reflex parts 123 with the double-bank form.
During one-rank form, arbitrary part of surface material 121 or the inside material 122 can be turned up, form reflex part 123, can be according to making plastic bag with the same manufacturing step of biserial.
Below, according to Figure 18 and Figure 19 another embodiment of the manufacture method of plastic bag of the present invention is described, with the embodiment that has illustrated for then to adopt prosign with a part, omit repeat specification.
In this manufacture method 130, it is the situation of making three row of three plastic bags 110 simultaneously, square one-tenth three places at surface material 121 or the inside material 122 turn up, form three row reflex parts 123, this situation of making plastic bag is with the step manufacturing same with double-bank situation described above, and diagram is omitted.
Turn up, form three row reflex parts 123 at a square one-tenth three places of this surface material 121 or the inside material 122 on one side, when making plastic bag on one side, need not to begin simultaneously turning up of three places, for example can be to begin to turn up two places earlier, and then carry out another place and turn up, can carry out at different time, can easily regulate and show the inside material 121,122 Widths relative folded position, the amount of turning up like this.
Then, under the situation of three row, for example as Figure 18 (a), (b) shown in, for on surface material 121, forming two place's reflex parts 123, inside the situation that forms place's reflex part 123 on the material 122 can followingly be made: two sacks are relative as the peristome 125 of the filling mouth that does not seal, simultaneously with one of them with remaining one by two heat-sealings osed top bottom is relative, dispose three row sacks, the situation of Figure 18 (a) for example, the fold direction of two reflex parts 123 that form on surface material 121 is asymmetric, in the situation of Figure 18 (b), the fold direction symmetry of two reflex parts 123 that on surface material 121, form.
For example under the situation of Figure 18 (a), the substantial middle part of a reflex part 123 configurable 122 Widths of material inside that form on the material 122 inside can be formed, under the situation of Figure 18 (b), a reflex part 123 that forms on the material 122 inside can be configured in and depart from very big end with middle body and form.
Shown in Figure 18 (a) and (b), become the peristome 125 that does not seal of two sacks relative the alignment arrangements of three sacks, one of them is that the bottom of two heat-sealings is relative with remaining one simultaneously, when in the final step of manufacturing line, becoming single sack by cutting unit cutting,, can not use the plastic sheeting lamilated body effectively because of finishing causes waste part.
And, under the situation of three row, on surface material 121, form two place's reflex parts 123, when forming a place reflex part 123 inside on the material 122, for example shown in Figure 19 (a), can followingly make: make the peristome 125 that does not seal of two sacks relative, the peristome 125 relative configuration three row sacks that the bottom of a heat-sealing in the middle of making simultaneously and remaining another one do not seal, two reflex parts 123 that form on surface material 121 can form in two ends of fabric width direction, simultaneously can be symmetrically formed fold direction, and a reflex part 123 that forms on the material 122 forms and can form with fabric width direction substantial middle position inside.
Thus, on the direction of transfer of surface material 121 or the inside material 122,, form reflex part 123 even under the state that applies tension force by feeding roller etc., also can on the fabric width direction, disperse equably.
When this three row sack is arranged, when in the final step of manufacturing line, cutting each sack respectively by the cutting unit, shown in Figure 19 (b), in the bottom of a heat-sealing of central portion and a remaining part that peristome 125 of heat-sealing is not relative, must be cut into and divide residual heat-sealing 124 in the bottom, do not have residual heat-sealing 124 at peristome 125, only produced the waste part that a bit causes because of finishing.
Another step of the manufacture method of the plastic bag of above-mentioned three row can be carried out equally with the double-bank situation that has illustrated, omits its explanation here.
As mentioned above, turn up, form reflex part 123 thus, can make the plastic bag of three row by on surface material 121 and the inside material 122, forming three row.
Below, according to Figure 20 the another embodiment of plastic bag manufacture method of the present invention is described.
In this manufacture method 140, the plastic bag 110A of manufacturing is except that so far surface material 111 and the inside material 112, and using in addition again turns back constitutes with flooring 119, and the leading section of reflex part 113 is by heat-sealing 114A sealing.
Above-mentioned plastic bag 110A can utilize the equipment of the manufacturing line of making the vertical plastic bag, and supplying with turns back replaces bottom material to make with flooring 119 (129).
Promptly, in this manufacture method 140, for example during biserial, in the manufacturing line 120 that has illustrated, the plastic sheeting lamilated body that the inside has Thermoadhesive is divided into 2, supplies with flooring 129 as turning back, and turns back once each end superimposed, form reflex part 123, be used to seal the perforate processing of fixing hole 123b then in two superimposed parts of the two ends of this reflex part 123 123a.
Be used for the hole processing that the two ends 123a of this reflex part 123 heat-sealing is fixing as long as form according to the position configuration in the hole that has illustrated and shape etc.
Turning back with superimposed surface material 121 above the flooring 129 then, while superimposed below the inside material 122, then except that the longitudinal sealing 124a and transverse sealing 124b of bag perimeter portion, carry out the sealing 124c at 124 reflex parts, 123 tops by heat-sealing, will be as peristome 125 openings of filling mouth, the end 123a of reflex part 123 fixes via hole 123b and transverse sealing 124b simultaneously.
When use is turned back with flooring 129 as other material, the part of necessity of sack can be sealed by heat-sealing.
The heat-sealing that is used for automatic peristome after this or the formation of peristome, cutting becomes sack etc. to carry out equally with the double-bank manufacture method 120 that has illustrated respectively.
At this moment, form by the heat-sealing 124 sealing 124c that form, also can pre-shaping step be set as required and repair at the top of reflex part 123.
According to the manufacture method 140 of above-mentioned plastic bag, supply with other material and turn back with flooring 129 and form reflex part 123, therefore can separate and turn up or the processing of hole 123b with the supply of surface material 121 and the inside material 122.
The application step that adhesives 128 also can be set replaces the processing of hole 123b, fixes the end 123a of reflex part 123 with this, can also fix with other fixing means.
More than, have been described in detail in conjunction with embodiment, manufacture method according to plastic bag of the present invention, by any one party of surface material or the inside material or two sides' a part are turned up the formation reflex part, net by continuous transmission or indexing transfer, can on surface material or the inside material, form reflex part, can make the plastic bag that possesses reflex part easily.
According to the manufacture method of plastic bag of the present invention, can form reflex part simply by the table the inside material of continuous transmission.
And according to the manufacture method of plastic bag of the present invention, the table the inside material that transmits continuously can form reflex part more simply by indexing transfer.
According to the manufacture method of plastic bag of the present invention, form reflex part by two places or each place at table the inside material, can carry out on the fabric width direction, making the double-bank manufacturing of each 2 row plastic bag easily.
And according to the manufacture method of plastic bag of the present invention, be not only table the inside material, can also make up turning back of other material at reflex part and make sack, use common vertical Bag Making Machine can make the sack that possesses reflex part with flooring.
Manufacture method according to plastic bag of the present invention, three places or two places of any one party and the opposing party's place formation reflex part by any one party of material inside table, form three place's reflex parts, can make easily has three row of three row plastic bags to make on the fabric width direction.
According to the manufacture method of plastic bag of the present invention, can be with the fold direction of reflex part with being combined to form of same direction, different directions or they, the overbending direction that can make reflex part thus easily possesses the plastic bag of reflex part arbitrarily.
Manufacture method according to plastic bag of the present invention, by successively carrying out the formation of reflex part in time, need not once to form reflex part, by separating in time, also reflex part can be easily formed to the flooring that has applied tension force, the plastic bag that possesses reflex part can be easily made.
Manufacture method according to plastic bag of the present invention, can be with the fixing of sealing outside width direction two ends of reflex part by perforate on the two unilateral material parts of clamping in the portion of being folded back, heat-sealing is fixing then, hole via two unilateral materials makes top and bottom material the inside contact like this, can seal fixing simply.
According to the manufacture method of plastic bag of the present invention, can form the hole respectively or across two unilateral materials at the two unilateral materials or the flooring that turns back, make flooring the inside contact up and down, can fix simply by heat-sealing.
Manufacture method according to plastic bag of the present invention, can or carry out the formation in hole in the continuous transmission of the table the inside material or the flooring that turns back in the indexing transfer, transmit continuously or indexing transfer all can form the hole in any case, can be by heat-sealing fixing reflex part simply.
According to the manufacture method of plastic bag of the present invention, can all can carry out sealing outside width direction two ends fixing of reflex part simply by arbitrary method such as adhesives, mechanical fixation, weldings.
According to the manufacture method of plastic bag of the present invention,, can safely and carry out the heating of micro-wave oven easily by can forming automatic peristome simply because of the automatic peristome of in-to-in vapour pressure opening in the inboard formation of the heat sealed perimeter portion of plastic bag.
According to the manufacture method of plastic bag of the present invention, can or form heat-sealing portion when carrying out the periphery heat-sealing, open through hole in this heat-sealing portion then, can form automatic peristome easily thus.
With reference to the accompanying drawings the manufacturing of plastic bag of the present invention, an embodiment of fill method are elaborated below.
At first, describe for the manufacturing of plastic bag of the present invention, the plastic bag that fill method was suitable for according to Figure 22.
Figure 22 is a plastic bag, (a) is the block diagram of membraneous material, (b) is the ground plan of assembled state, (c) is the block diagram of micro-wave oven heated condition.
For example as shown in figure 22, this plastic bag 210 is lie low sacks of formula of lengthwise, serves as vertically to grow the limit, be laterally use with the minor face, and here, the fabric width direction is parallel with short side direction.
This plastic bag 210 is made of membraneous material 211, the centre portion of membraneous material 211 is provided with the reflex part 213 of Width, membraneous material 211 (in the middle of length direction of membraneous material 211) in the middle of the width vertical direction turned up slightly become zigzag and form, seal by the sealing 214a of periphery front end and the sealing 214c of reflex part 213, form sealing 214.
In this plastic bag 210, the sealing 214 outside width direction two ends 213a of reflex part 213 and membraneous material 211 are fixing.
When making the sack that to fill the content that needs the micro-wave oven heating etc., as required because of in press that to rise the automatic peristome 216 of opening automatically be that form with the through hole that connects heat-sealing portion 217 forms, for example the heat-sealing portion 217 and the heat-sealing portion 214 of bag perimeter portion are formed respectively, form automatic peristome 216 in this part.
In the above-mentioned plastic bag 210, the reflex part 213 of the Width of formation and internal communication in the middle of the membraneous material 211 of the formula that lies low sack, by interior pressure this reflex part 213 is expanded, the membraneous material vertical with Width 211 increased and hold up, therefore when possessing automatic peristome 216, can keep high-order (with reference to Figure 22 (c)).
Below, according to Figure 21, manufacturing, the fill method of filling content when making above-mentioned plastic bag 210 described.
As shown in figure 21, in this manufacturing, the fill method, about being positioned at the long limit of the plastic bag that Figure 22 is illustrated 210, minor face be positioned at about the state of configuration transmit continuously, fill content while make sack, reflex part 213 forms along direction of transfer.
As shown in figure 21, in this manufacturing, the fill method, the inside has plastic sheeting lamilated body 221 debatchings of Thermoadhesive, import forming supporter 223 via a plurality of feeding rollers 222, bend to tubular during by this forming supporter 223, the dual-side portion of film is superimposed, forms intersection 224.
In this intersection 224 step afterwards its cardinal extremity is bent, shown in Figure 21 (b), from the length L of the cardinal extremity of this bending is the length of length L 2 additions of the necessary front end desired seal 214c of portion that is used to seal reflex part 213 in the length L 1 of reflex part 213 plastic bag 210 and this manufacturing step, and the length of the superimposed part during than common pillow type packaging only grows reflex part 213 partial L 1.
Then, on the superimposed part 224 of cylindrical body 226 roughly, by adhesive coated device 27, after step in become inboard plastic bag 210 reflex parts 213 by the bending of this cardinal extremity two ends 213a coating adhesive 228 hot melt adhesive for example, wherein, according to the running condition of plastic bag 210, to be equivalent to the interval coating adhesive 228 of width.
Roughly cylindrical body 226 superimposed parts 224 are transmitted, and by pressure roller 229, by the cardinal extremity pressing, make the face bending that has been coated with adhesives 228 in the inboard, and the two ends 213a of reflex part 213 is adhesively fixed.
Like this, when possessing reflex part 213, formed the continuous roughly cylindrical body 226 that two ends 213a is fixed, then this roughly the front end of cylindrical body 226 make its forward end seal 231 by hot sealing device 230, become the forward end seal 214a of plastic bag 210.
Then, roughly filled content 232 in the inside of cylindrical body 226 by content filling device 233 forward end by forward end seal 231 osed tops, this roughly forms back-end sealing portion 234 by hot sealing device 230 in the rear end of cylindrical body 226 then, the forward end seal 214a of plastic bag 210 is as the opposing party, and plastic bag 210 forms the sealing state that is filled with content.
Use cutting unit 235 then, cut off, cut off into single plastic bag 210 at the rear of back-end sealing 234.
When the manufacturing of above-mentioned continuous plastic bag 210 and the filling of content, but forward end seal 231 green phases of the plastic bag 210 of the back-end sealing 234 of the plastic bag 210 of going ahead of the rest and back row with hot sealing device 230 carry out simultaneously.
In this plastic bag 210, on plastic sheeting lamilated body 221, form by the inner vapor of bag 210 and press and automatic peristome 216 that can opening, form heat-sealing portion 217 by hot sealing device 230 simultaneously at the leak free that carries out leading section 231 and back-end sealing 234, open through hole by perforating device 236 in this heat-sealing portion 217 then, form automatic peristome 216.
Thus, by forming automatic peristome 216, promptly use the micro-wave oven heating that the rising of internal pressure is left automatically by peristome 216.
Describe in detail as above, manufacturing, fill method according to this plastic bag, two edge parts of plastic bag 221 Widths are superimposed, carry out the sealing of reflex part 213 and forward sealing portion 214c thereof by pillow formula sealing arrangement 225, can make the sack 210 that possesses reflex part 213, and can between forward sealing portion 231 and back-end sealing portion 234, fill content 232, fill content 232, can make efficiently, fill while can make plastic bag 210.
Manufacturing, fill method according to this plastic bag, carry out the fixing of reflex part 213 two ends 213a by coating adhesive 228 before superimposed part 224 bendings, so the fixing of the two ends 213a of reflex part 213 can carry out simply in coating adhesive 228 backs by bending.
And manufacturing fill method according to this plastic bag, forward end seal 231 and back-end sealing 234 can be carried out simultaneously with roughly cylindrical body 226 back-end sealings 234 of going ahead of the rest and roughly cylindrical body 226 forward end seal 231 of back row, therefore a hot sealing device 230 can be made effectively, fill.
According to the manufacturing fill method of this plastic bag, form the automatic peristome 216 that can press off mouth at plastic bag 210 by inner vapor, therefore promptly use the micro-wave oven heating also can eliminate the risings of internal pressure automatically by peristome 216.
Manufacturing, fill method according to this plastic bag, can in forward end seal 231 and back-end sealing 234, form heat-sealing portion 217 by hot sealing device 230, in this heat-sealing portion 217, open through hole then and form automatic peristome 216, therefore can form automatic peristome 216 easily with perforating device 236.
In the above-mentioned embodiment, can carry out the fixing of reflex part 213 two ends 213a by adhesives 228, but be not limited to this, can also be after superimposed part 224 is bent, with the reflex part 213 two ends 213a mechanical fixation such as nail rifle or rivet that bend, perhaps fix, all can fix easily with weldings such as ultrasonic sealings.
Industrial applicability
Polybag of the present invention can the filling liquid material, fixed substance or their mixture The contents such as retort pouch are applicable to microwave-oven-heating bag for cooking.
Claims (32)
1. plastic bag is characterized in that: the film that will constitute at least one side of the surface film of plastic bag and the inside film turns back across plastic bag Width total length, and periphery is sealed, and forms the reflex part that at least one place is communicated with bag body thus.
2. the plastic bag of claim 1 is characterized in that: form reflex part on surface film that constitutes sack and the inside film.
3. claim 1 or 2 plastic bag is characterized in that: form reflex part in an end near sack.
4. claim 1 or 2 plastic bag is characterized in that: form reflex parts in two ends near sack.
5. each plastic bag among the claim 1-4, it is characterized in that: the film that will constitute plastic bag carries out zigzag and turns back, and forms reflex part.
6. each plastic bag among the claim 1-4, it is characterized in that: the film that will constitute plastic bag carries out zigzag and turns back, and then is bent into anti-zigzag, forms reflex part thus.
7. each plastic bag among the claim 1-6, it is characterized in that: in the perimeter of reflex part, on the film that the more close internal layer of outermost film than surface film that is disposed at the formation perimeter and the inside film exists, aperture portion is set, makes via this aperture portion to be configured in the outermost film heat-sealing in two sides in the table.
8. each plastic bag among the claim 1-7 is characterized in that: near the end of the sack of reflex part or form near it and make this sack automatic tapping machine structure of opening automatically when heating with micro-wave oven.
9. the plastic bag of claim 8 is characterized in that: be adjacent to form the automatic tapping machine structure with the perimeter of sack end.
10. the plastic bag of claim 9 is characterized in that: the perimeter in the sack end is provided with the jut of front end side in sack, forms the automatic tapping machine structure thus.
11. the plastic bag of claim 8 is characterized in that: the automatic tapping machine structure and the perimeter of sack end are separated formation.
12. each plastic bag among the claim 8-11 is characterized in that: the automatic tapping machine structure is the vapor seal portion that removes with weakenings.
13. the manufacture method of plastic bag, this method is the reflex part that possesses the Width of at least one place and internal communication at least one side of surface material and the inside material, periphery is heat-sealed, and simultaneously the sealing outside width direction two ends of this reflex part and above-mentioned surface material or the inside material is fixed
It is characterized in that: at least one side's of above-mentioned surface material and above-mentioned the inside material a part is turned up, formed above-mentioned reflex part.
14. the manufacture method of the plastic bag of claim 13 is characterized in that: on the above-mentioned table the inside material that transmits continuously, carry out the formation of above-mentioned reflex part.
15. the manufacture method of the plastic bag of claim 13 is characterized in that: the above-mentioned table the inside material that will transmit continuously carries out the formation of above-mentioned reflex part in the mode of indexing transfer.
16. the manufacture method of each plastic bag among the claim 13-15 is characterized in that: at two places of above-mentioned table the inside material any one party or respectively each place forms above-mentioned reflex part, makes with the double-bank form.
17. the manufacture method of each plastic bag among the claim 13-16 is characterized in that: except that the material of above-mentioned table the inside, also use turning back of above-mentioned reflex part of formation to make with flooring.
18. the manufacture method of each plastic bag among the claim 13-15 is characterized in that: three places of any one party of material or two places of any one party and the opposing party's a place form above-mentioned reflex part inside above-mentioned table, with the form manufacturings of three row.
19. the manufacture method of each plastic bag among the claim 13-18 is characterized in that: the overbending direction of the above-mentioned reflex part direction according to equidirectional, different directions or their combination is formed.
20. the manufacture method of each plastic bag among the claim 13-19 is characterized in that: divide in time successively to form above-mentioned reflex part.
21. the manufacture method of each plastic bag among the claim 13-20, it is characterized in that: the sealing outside width direction two ends of above-mentioned reflex part fixedly be punching on by the two unilateral materials part of above-mentioned reflex part clamping, fix by heat-sealing then.
22. the manufacture method of the plastic bag of claim 21 is characterized in that: form above-mentioned hole respectively or across two unilateral materials at above-mentioned two unilateral materials or the above-mentioned flooring that turns back.
23. the manufacture method of the plastic bag of claim 21 or 22 is characterized in that: in the continuous transmission of the above-mentioned table the inside material or the flooring that turns back or carry out the formation in above-mentioned hole in the indexing transfer.
24. the manufacture method of each plastic bag among the claim 13-20 is characterized in that: the arbitrary form by adhesives, mechanical fixation, welding carries out sealing outside width direction two ends fixing of above-mentioned reflex part.
25. the manufacture method of each plastic bag among the claim 13-24 is characterized in that: inboard formation can be by the automatic peristome of in-to-in vapour pressure opening in the heat sealed perimeter portion of above-mentioned plastic bag.
26. the manufacture method of the plastic bag of claim 25 is characterized in that: when carrying out above-mentioned periphery heat-sealing, form heat-sealing portion, in this heat-sealing portion, open through hole then, form above-mentioned automatic peristome.
27. the manufacturing of plastic bag, fill method, it is characterized in that: a side who is manufactured on table the inside material possesses with the reflex part of the Width of internal communication, the plastic bag of simultaneously material inside these reflex part Width two ends and the above-mentioned table being fixed and when filling content
Two ends of Width of plastic sheeting are superimposed, make it can form the sealing of above-mentioned reflex part and front end thereof, roughly cylindrical body is made in leading section pillow formula heat-sealing that only will this superimposed part, and cardinal extremity that then will this superimposed part bends, fixing two ends simultaneously, form above-mentioned reflex part, then make this roughly front end osed top forward end seal of cylindrical body, fill content, make the roughly back-end sealing of the back-end closure of cylindrical body again, cut off then.
28. the manufacturing of the plastic bag of claim 27, fill method is characterized in that: coating adhesive before above-mentioned superimposed part bending, carry out the two ends of above-mentioned reflex part and fix.
29. the manufacturing of the plastic bag of claim 27, fill method is characterized in that: after with above-mentioned superimposed part bending, carry out the fixing of above-mentioned reflex part two ends by mechanical fixation or welding.
30. the manufacturing of each plastic bag, fill method among the claim 27-29 is characterized in that: with the back-end sealing of above-mentioned forward end seal and above-mentioned back-end sealing and the above-mentioned roughly cylindrical body of carrying out earlier and after the forward end seal of the above-mentioned roughly cylindrical body of carrying out carry out simultaneously.
31. the manufacturing of each plastic bag, fill method among the claim 27-30 is characterized in that: on material in the above-mentioned table, form and to pass through the in-to-in steam and the automatic peristome of opening.
32. the manufacturing of the plastic bag of claim 31, fill method is characterized in that: when carrying out above-mentioned forward end seal and above-mentioned back-end sealing, form heat-sealing portion, open through hole in this heat-sealing portion then, form above-mentioned automatic peristome.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004244606A JP4258455B2 (en) | 2004-08-25 | 2004-08-25 | Plastic pouch |
| JP244606/2004 | 2004-08-25 | ||
| JP2005188351A JP4760159B2 (en) | 2005-06-28 | 2005-06-28 | Manufacturing method of plastic pouch |
| JP2005188352A JP2007008485A (en) | 2005-06-28 | 2005-06-28 | Manufacturing/filling method for plastic pouch |
| JP188351/2005 | 2005-06-28 | ||
| JP188352/2005 | 2005-06-28 | ||
| PCT/JP2005/015965 WO2006022435A1 (en) | 2004-08-25 | 2005-08-25 | Plastic pouch and method of producing the same |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910179293A Division CN101670892A (en) | 2004-08-25 | 2005-08-25 | Plastic pouch and method of producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101052574A true CN101052574A (en) | 2007-10-10 |
| CN101052574B CN101052574B (en) | 2010-09-29 |
Family
ID=36109496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800365461A Active CN101052574B (en) | 2004-08-25 | 2005-08-25 | Plastic pouch and method of producing the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4258455B2 (en) |
| CN (1) | CN101052574B (en) |
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| JP4029590B2 (en) * | 2000-12-19 | 2008-01-09 | 東洋製罐株式会社 | Microwave packaging bag |
| JP4231988B2 (en) * | 2001-09-14 | 2009-03-04 | 東洋製罐株式会社 | Packaging bag for microwave oven and method for producing package body filled with contents in the packaging bag |
| JP3675399B2 (en) * | 2001-12-21 | 2005-07-27 | 東洋製罐株式会社 | PACKAGING BAG FOR MICROWAVE RANGE AND METHOD FOR MANUFACTURING PACKAGE BODY PACKED WITH CONTENTS |
| JP2004106863A (en) * | 2002-09-17 | 2004-04-08 | Dainippon Printing Co Ltd | Packaging bag for use in microwave oven |
| JP4337466B2 (en) * | 2003-08-08 | 2009-09-30 | 凸版印刷株式会社 | Packaging bag having steam venting function and packaging body using the same |
-
2004
- 2004-08-25 JP JP2004244606A patent/JP4258455B2/en active Active
-
2005
- 2005-08-25 CN CN2005800365461A patent/CN101052574B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502157A (en) * | 2018-12-08 | 2019-03-22 | 中山市太力家庭用品制造有限公司 | A kind of vacuum compression bag that can be disposable and its manufacturing method |
| CN111366048A (en) * | 2020-03-24 | 2020-07-03 | 宋俊生 | Coupling type water cannon mud bag and method for filling blast hole by using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101052574B (en) | 2010-09-29 |
| JP2006062672A (en) | 2006-03-09 |
| JP4258455B2 (en) | 2009-04-30 |
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