CN110121465A - Multi-bag - Google Patents
Multi-bag Download PDFInfo
- Publication number
- CN110121465A CN110121465A CN201880005533.5A CN201880005533A CN110121465A CN 110121465 A CN110121465 A CN 110121465A CN 201880005533 A CN201880005533 A CN 201880005533A CN 110121465 A CN110121465 A CN 110121465A
- Authority
- CN
- China
- Prior art keywords
- bag
- tearing
- film
- multiple film
- stop
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
- B65D75/44—Individual packages cut from webs or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5827—Tear-lines provided in a wall portion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Packages (AREA)
Abstract
Project: being capable of providing a kind of multi-bag, will not be separated, can be easily processed from multi-bag ontology by the tearing sheet that tearing generates.Solution: a kind of multi-bag that multiple film is constituted, the multiple film are made of outer side form with internal membrane.It is also formed with back sealing, back sealing is to carry out the deposition of defined width in the state of being overlapped the both ends of multiple film and formed；It is formed with multi-bag, multi-bag fills and forming transversal sealing portion and is sealed with content, and transversal sealing portion is nearby to carry out deposition with two ora terminalis of the defined width pair side orthogonal with back sealing and formed.There is tear initiation near back sealing, tear initiation, corresponding to the forming position of tear initiation, has been formed about tearing stop in end for breaking a seal substantially in parallel relative to transversal sealing portion.
Description
Technical field
The present invention relates to the multi-bags (complex pocket) being made of multiple film (composite membrane), in particular to one kind will not be because of tearing
Part is caused to be scattered in the new multi-bag of surrounding.
Background technique
The liquid that can use at work, semifluid, the material, the food that divide shape body, solid, paste etc. etc., mostly by
Filling is carried into metal container, is taken care of, being peddled.But there are the following problems for metal container: after use
Container volume it is big, be difficult to take out container processing after content, use is difficult, container weight again etc..
According to this situation, the packing method of referred to as so-called bag in box (bag-in-box) is proposed, and widely answered
With in this packing method, by such Contents Fill in the bag being made of plastic film, with this state general
It is accommodated in corrugation chest made of paper, shovel board (pallet) etc. and circulates.In this bag in box, the film for bag is necessary
High mechanical strength is able to use the film that the stacking on the high-strength membrane of nylon, polyester etc. has the layer of thermally welded property and constitutes.Separately
Outside, it in order to further increase mechanical strength, can also attempt that various films are laminated, or increase thickness.
However, it is also proposed that this multi-bag: satisfied performance may not can be obtained on this aspect of intensity, forms the 2 of bag
Film is opened without being laminated (laminate) completely, there is the freedom degree that can be mutually shifted (for example, referring to patent document 1.).
Multi-bag (the alternatively referred to as double bag.) by the outer side form on the outside of being exposed to and the internal membrane structure contacted with content
At even if 1 film generation pin hole (pinhole), also can prevent other films to be damaged.In addition, also can for bending stress
It is enough in the internal membrane for keeping content and contact with corrugated paper chest etc. and support multi-bag outer side form between generate certain left side
Right sliding can absorb impact etc., and inhibition is applied extreme bending stress, will not generate pin hole on the film for forming bag, be
It is ruptured to preventing bag from generating.
For multi-bag, when taking out the content of filling, mostly from back sealing tearing Kaifeng, but for example in the presence of as follows
Problem: it needs to collect in the case where such portion of putting the palms together before one forms back sealing as the laminating type of the portion of putting the palms together before one (engaging portion)
In 4 sealing strips in the portion of putting the palms together before one tear, also there is outer side form and freedom degree etc. that internal membrane can be mutually shifted, easily break a seal
Property is bad.
Such multi-bag is proposed as a result: by the way that tear initiation is arranged, can easily tear multiple film, Yi Kai
Envelope property excellent (for example, referring to patent document 2).
Existing technical literature
Patent document
4490045 bulletin of patent document 1:JP patent
Patent document 2:JP special open 2016-159932 bulletin
Summary of the invention
Subject to be solved by the invention
However, generating multiple tear because of tearing in the case where breaking a seal the multi-bag being made of multiple film by tearing
Sliver.In multiple film, outer side form with internal membrane be not it is integrated, when being torn, the tearing from outer side form can be generated
Piece and tearing sheet from internal membrane, around they can be scattered in, or enter in bag in box etc., cause it to clear up (removing) numerous
It is miscellaneous.
Particularly, in the case where content is food etc., management standard is stringent, it is desirable that is tightly confirmed whether after having use
Film, if quantity be how many.In the case where dividing packaging bag come above and below by tearing etc., if tearing sheet and multi-bag
The number of ontology mismatches, it is likely that is mixed into foreign matter, this can become big problem.Therefore, demand Kaifeng property is good and is difficult to
Isolated packaging bag.
The present invention is proposed in view of such existing situation, it is therefore intended that, it is capable of providing a kind of multi-bag, is passed through
The tearing sheet for tearing and generating will not be separated from multi-bag ontology, can be easily processed.
Means for solving the problems
In order to reach purpose above-mentioned, multi-bag of the invention is made of multiple film, and the multiple film is constituted by outer side form
It is constituted with internal membrane, which is characterized in that be formed with back sealing, the back sealing is overlapped at the both ends for making the multiple film
In the state of carry out defined width deposition and formed；It is formed with multi-bag, the multi-bag is and forming transversal sealing portion
Filling is sealed with content, and the transversal sealing portion is attached with two ora terminalis of the defined width pair side orthogonal with the back sealing
It is close to carry out deposition and formed；There is tear initiation near the back sealing, the tear initiation be used for relative to
The transversal sealing portion breaks a seal substantially in parallel；Corresponding to the forming position of the tear initiation, it is formed about in end
There is tearing stop.
Multi-bag of the invention, the forming position with tear initiation is (for example, because envisioning cutting line caused by tearing
On) it is accordingly formed with tearing stop, therefore, the tearing of the multiple film since tear initiation stops in the tearing stop
Only.Therefore, tearing sheet will not be kept completely separate from multi-bag ontology, and tearing sheet is also integrated with multi-bag ontology behind Kaifeng,
Will not it is at random around or enter bag in box in.
The effect of invention
By means of the invention it is possible to a kind of multi-bag is provided, it will not be from multi-bag sheet by the tearing sheet that tearing generates
Body separation, can be easily processed.
Detailed description of the invention
Fig. 1 is the approximate stereogram for indicating an example of multi-bag.
Fig. 2 is the approximate vertical view for indicating multi-bag shown in FIG. 1.
Fig. 3 is the approximate vertical view for indicating the other examples of tearing stop.
Fig. 4 is the approximate vertical view for indicating another other examples of tearing stop.
Fig. 5 is the approximate vertical view for indicating another other examples of tearing stop.
Fig. 6 is the approximate vertical view for indicating the example of setting tearing stop at two.
Fig. 7 is the approximate vertical view for indicating the other examples of setting tearing stop at two.
Fig. 8 is the example for indicating for the tearing stop formed by deposition to be combined with the indentation for being used to stop tearing
Approximate vertical view.
Fig. 9 is other for indicating for the tearing stop formed by deposition to be combined with the indentation for being used to stop tearing
The approximate vertical view of example.
Figure 10 is the major part summary section for indicating the deposition example on tearing stop.
Figure 11 is the major part summary section for indicating other deposition examples on tearing stop.
Figure 12 is the major part summary section for indicating other another deposition examples on tearing stop.
Figure 13 is the approximate stereogram for indicating for multi-bag to be put into the form used in chest as bag in box.
Figure 14 is the figure for indicating the situation of tearing of multi-bag.
Figure 15 is the approximate stereogram for indicating the multi-bag after tearing.
Figure 16 is the explanatory diagram for illustrating the manufacturing method of multi-bag.
Specific embodiment
In the following, the embodiment using multi-bag of the invention is described in detail with reference to the attached drawings.
Fig. 1 is the perspective view for indicating the multi-bag 1 of present embodiment, and Fig. 2 is to indicate that the multi-bag 1 of present embodiment is bowed
View.Fig. 1 and multi-bag shown in Fig. 21 are made of multiple film 2, which is made of outer side form 3 and internal membrane 4.This
Outside, outer side form 3 and internal membrane 4 will be exposed in the case where carrying out bag making (bag making) change as multi-bag 1
(contacting with corrugated paper chest (not shown) etc.) film in the outside of multi-bag 1 as outer side form 3, will appear in multi-bag 1
((not shown) to contact with content) film of inside is as internal membrane 4.
The multi-bag 1 of present embodiment is the multi-bag of adhesion type of putting the palms together before one, to make mode opposite between internal membrane 4 will
The both ends of multiple film 2 are overlapped, to form portion 5 of putting the palms together before one, the back sealing with defined width deposition is formed in the portion 5 of putting the palms together before one
Portion 6.Multiple film 2 is set to be bent into tubular, be overlapped mode mutually opposed between internal membrane 4 by the both ends of multiple film 2, thus
Form the portion 5 of putting the palms together before one for constituting multi-bag 1.
Multi-bag 1 fills defined content when in use, and forms back sealing 6 and transversal sealing portion 7, thus fills out
It fills and seals content.As shown in Figure 1 and Figure 2, relative to the portion of putting the palms together before one 5 with defined width (about 2~20mm or so.Following phase
Together.) with band-like progress deposition, (heat seal, heat are melted deposited.It is same as below.), to form back sealing 6.In addition, with defined width
Spend (about 2~20mm or so.It is same as below.) with two ora terminalis of the band-like deposition side orthogonal with the back sealing 6 near, thus
Form transversal sealing portion 7.In addition, transversal sealing portion 7 can also be made of multiple sealings of thin width threadiness.
Carry on the back sealing 6, transversal sealing portion 7, be all in the state of by being connected between the internal membrane 4 of multiple film 2 with flat condition,
It is clamped to be formed from the seal bar (seal bar) etc. of external defined width (not shown).At this point, in addition to connecting
It further include including outer side form 3, whole films (outer side form 2 is opened, internal membrane 2 is opened, and counts 4) of coincidence are melt other than between internal membrane 4
It is deposited and integrated.In addition, this is also same for transversal sealing portion 7.
In addition, in the multi-bag 1 of present embodiment, as shown in Figure 1 and Figure 2, for so that between internal membrane 4 mutually
Opposed mode is puted the palms together before one portion 5 made of being overlapped the both ends of multiple film 2, is formed with tear initiation 51.Tear initiation 51 is
Formed for being broken a seal substantially in parallel relative to transversal sealing portion 7, for example, if with relative to transversal sealing portion 7 substantially
Parallel mode is formed, then user is easy to break a seal for transversal sealing portion 7 substantially in parallel.
For the tear initiation 51 being formed in the portion of putting the palms together before one 5, keep its initial tear resistance weak, improves easily openable.Just
For tear initiation 51, the arbitrary shape of crack (disconnection), V notch, I notch, pinprick, micro- porous aggregate etc. can be made into
Shape.
As shown in Figure 1 and Figure 2, tear initiation 51 is at least formed since the outer rim 52 in the portion of putting the palms together before one to back sealing 6.
Tear initiation 51 reaches back sealing 6, to can easily tear 4 swimmingly once can just tear at Kaifeng
The back sealing 6 of film (2 multiple films 2) aggregation is opened, and becomes the excellent multi-bag 1 of easily openable.In addition, starting as tearing
The length in portion 51 is not particularly limited, but as long as about 5~20mm as long as reaching back sealing 6 as described above.
The multi-bag 1 of present embodiment is formed by the multiple film 2 being easy to tear, and explanation is easy to tear more below
The material of weight film 2.
In the present embodiment, outer side form 3 and internal membrane 4 are multilayered structure, between outer side form 3 and internal membrane 4
Apparently, outer side form 3 is symmetric relation with internal membrane 4, from the outside of multi-bag 1 to the inside of multi-bag 1, successively in the gap of formation
For multi-bag 1 outside/outer layer/middle layer/internal layer (the above are the layers of outer side form 3)/gap/internal layer/intermediate/outer layer (with
The upper layer for internal membrane 4)/multi-bag 1 inside.Also, when forming back sealing 6 or transversal sealing portion 7, belong to the layer of outer layer
It is directly in contact by coincidence by deposition.
In said layer, forming back sealing 6 or when transversal sealing portion 7 is directly in contact by the outer layer of deposition, preferably its
Layer itself has heat sealability, for example, polyolefin resin can be enumerated, specifically, can enumerate high density polyethylene (HDPE) (HDPE), in
Density polyethylene (MDPE), low density polyethylene (LDPE) (LDPE), straight-chain (threadiness) low density polyethylene (LDPE) (LLDPE), straight-chain are super
Low density polyethylene (LDPE) (VLDPE), in addition, can enumerate ethylene and can with the copolymer of the vinyl compound of ethylene copolymer,
For example, ethylene-vinyl acetate copolymer (EVA), ionomer, ethylene-acrylic acid or ethylene-acrylate copolymers can be enumerated
The polythylene resin of object, ethylene methacrylic acid or methacrylate copolymer, ethylene-propylene copolymer etc. or poly- third
Vinyl resin, or by the polyolefin resin acrylic acid of polyethylene, polypropylene etc., methacrylic acid, anhydrous maleic acid, rich horse
The polyolefin resin of acid and its unsaturated carboxylic acid and acid-modified polyolefin resin made of being modified etc..These resin bases can be single
1 kind is solely used, two or more can also be applied in combination.
In these resins, it is preferable to use the excellent low density polyethylene (LDPE) (LDPE) such as heat sealability.In low density polyethylene
In alkene, the particularly preferred also excellent straight-chain low density polyethylene such as mechanical strength with pinhole resistance and due to tough and tensile solid
Alkene (LLDPE).
In addition, physical property, mechanical strength or heat-seal strength etc. when having used straight-chain low density polyethylene (LDPE) (LLDPE),
It is adjusted by the carbon atom number of the alpha-olefin of copolymerization.In general, carbon atom number be 3~13, it is preferable to use carbon atom number be 4~
8 alpha-olefin, such as butene-1, octene-1, hexene -1,4- methylpentene -1, heptene -1 etc..
Low density polyethylene (LDPE) (including straight-chain low density polyethylene (LDPE).) density, preferably 0.870~0.935g/cm3.
By using low density polyethylene (LDPE) of the density in such range, to keep the various characteristics of heat sealability etc..Low density polyethylene
The density of alkene is preferably 0.880~0.920g/cm3.In addition, 190 DEG C of melt flow rate (MFR) (MFR) be preferably 0.1~
30.0g/10 points, particularly preferably 0.5~4.0g/10 points.
For constituting the internal layer of outer side form 3 and internal membrane 4, middle layer, in order to multiple film 2 imparting pinhole resistance,
Mechanical property, other than being able to use the polyolefin resin of the polythylene resin, polypropylene-based resin etc., additionally it is possible to
Use polyamide-based resin (nylon), polyester resin (PET, PBT), ethylene-vinyl resin alcohol copolymer etc..
In addition, being preferably made to the tearable resin layer being made of tearable resin as middle layer.Tearable resin is made
It is clipped in the middle for middle layer, further can assign easily openable to multiple film 2.In addition, being done by outer side form 3 or internal membrane 4
In the case where at 3-tier architecture, for outer side form 3, preferably since the outside of multi-bag 1, it is made into order low by straight-chain
Layer (straight-chain low density polyethylene layer)/tearable resin layer/layer being made of polyolefin resin that density polyethylene is constituted
(polyolefin type resin layer)；For internal membrane 4, preferably it is made into order since the outside of multi-bag 1 (gap) poly-
Olefine kind resin layer/tearable resin layer/straight-chain low density polyethylene layer.Outer side form 3 and internal membrane with this configuration
4, easily openable (tearability) can be assigned in the state ofs keeping heat sealability, pinhole resistance etc..
As the resin of the tearable resin layer of composition, such as the compound tree containing cyclic polyolefin resin also can be used
Rouge.By the way that such layer for containing cyclic polyolefin resin is clipped in the middle as middle layer, to improve the easy Kaifeng of multiple film 2
Property (tearability).
Cyclic polyolefin resin, the general name for the resin usually being polymerize using cyclic olefin as polymeric unit, for example, recording
In JP Laid-Open 1-240517 bulletin, JP Laid-Open 3-14882 bulletin, JP Laid-Open 3-122137 bulletin etc..?
This, it is of course possible to use the ring opening metathesis polymerization body (cycloolefin for polymerizeing cyclic olefin by double decomposition ring-opening polymerization
Polymer: COP), it is also possible to the copolymer of cyclic olefin and alpha-olefin (chain olefin) etc., that is, so-called cyclic olefin is total
They are used unsaturated carboxylic acid or derivatives thereof modified graft polymers, Yi Jihan by polymers (cyclic olefine copolymer: COC)
There is the substance of these hydride etc..
As cyclic olefin, it is able to use vinyl unsaturated bond and any ring-type with bicyclic (bicyclo ring)
Hydrocarbon, Norbornene derivative etc. is well-known, preferably with the object of bicyclic [2.2.1] hept-2-ene" (norbornene) skeleton
Matter.
Specifically, bicyclic [2.2.1] hept-2-ene" and its derivative, tricyclic [the 4.3.0.12.5] -3- last of the ten Heavenly stems can be enumerated
Alkene and its derivative, tricyclic [4.4.0.12.5] -3- endecatylene and its derivative, Fourth Ring
[4.4.0.12.5.17.10] -3- laurylene and its derivative, ten pentaene of five rings [6.5.1.13.6.02.7.09.13] -4-
And its derivative, ten pentaene of five rings [7.4.0.12.5.19.12.08.13] -3- and its derivative, five rings
[6.5.1.13.6.02.7.09.13] -4,10- pentadecane diene and its derivative, five rings
[8.4.0.12.5.19.12.08.13] -3- hexadecene and its derivative etc., but not limited to this.
In addition, for cyclic annular alkene, the anhydride group such as can have carboxyl, carboxylic acid anhydrides, ring as hydrocarbon sub-stituent
The polar group of oxygroup, amino, amide groups, ester group, hydroxyl, thio group, phosphono, phosphino- etc..In addition, (methyl) third can be enumerated
Olefin(e) acid, maleic acid, anhydrous maleic acid, anhydrous itaconic acid, (methyl) glycidyl acrylate, (methyl) alkyl acrylate
(for example, carbon atom number 1~10) ester, Malaysia dialkylaminobenzoic acid (for example, carbon atom number 1~10) ester, (methyl) acrylamide, (methyl)
2-Hydroxy ethyl acrylate etc., preferably may include with carboxyl, anhydride group, epoxy group, amino, amide groups, ester group, hydroxyl,
The unsaturated compound of the polar group of thio group, phosphono, phosphino- etc..
For example, as cyclic olefin copolymer, as the alpha-olefin being copolymerized with cyclic olefin, such as be able to use ethylene,
The alpha-olefin of carbon atom number 3~20, specifically, can enumerate ethylene, propylene, 1- butylene, 1- amylene, 3-methyl-1-butene,
Ethylene etc. is widely used in 1- hexene, 4-methyl-1-pentene etc..
Using polythylene resin as resin (aftermentioned) combined with cyclic polyolefin resin, it is based on
Relative to polyethylene, the reason of favorable dispersibility etc. is, it is preferable to use cyclic olefin copolymer (COC), particularly preferably by copolymerization
The ethylene-cyclic olefin copolymer of ethylene is made in alpha-olefin.
For the manufacture of ring opening metathesis polymerization body, as long as well known ring opening metathesis polymerzation, does not have
It is particularly limited to；The cyclic olefin can be made to carry out ring-opening polymerisation with polymerization catalyst, to be manufactured.
In addition, for the manufacture of cyclic olefin copolymer, for example, utilizing the monocrystalline class catalyst of metallocene catalyst etc.
Or polycrystalline class catalyst, so that the alpha-olefin of regulation molar ratio is polymerized at random with cyclic olefin.
In addition, the hydrogen additive of ring-opening polymerisation body of cyclic olefin monomers etc., can pass through well known hydrogenation catalyst pair
Ring-opening polymerisation body, which is hydrogenated, to be obtained.
, it is preferable to use glass transition temperature (Tg) is (for example, JISK7121 etc. for cyclic polyolefin resin.) it is 60 DEG C
Above.By using cyclic polyolefin resin of the glass transition temperature in such range, it is able to maintain excellent heat resistance.Just
For cyclic polyolefin resin, particularly preferred glass transition temperature (Tg) is 70 DEG C or more.
In addition, the melt flow rate (MFR) (MFR) of cyclic polyolefin resin is preferably 3.0~30.0g/10 points.By using
Cyclic polyolefin resin of the MFR in such range, is able to maintain excellent heat resistance.For the MFR of cyclic polyolefin resin,
As long as use is with ISO 1133, ASTM D-1238 (for example, 280 DEG C.The value being measured on the basis of 21.18N).Especially
It is preferred that the MFR of cyclic polyolefin resin is 5.0~20.0g/10 points.
In the case that middle layer to be set to the hybrid resin, as what can be applied in combination with cyclic polyolefin resin
Resin is able to use the polyolefin resin of the polythylene resin, polypropylene-based resin etc..Wherein it is also preferred that polyethylene kind
Resin is more highly preferred to low density polyethylene (LDPE) (LDPE), particularly preferred straight-chain low density polyethylene (LDPE) (LLDPE).
The content for constituting the cyclic polyolefin resin in the hybrid resin of tearable resin layer, preferably with respect to whole mixing
Resin (refers to the total of the resin that cyclic polyolefin resin and the cyclic polyolefin resin are applied in combination.) and be set as 3~
99 mass %.By controlling the content of cyclic polyolefin resin in such range, tearability can be implemented well.
The content of cyclic polyolefin resin is more preferably set as 60~90 mass % relative to whole hybrid resins, and particularly preferably 60
~80 mass %.
In addition, in the outer side form 3 of multilayer and internal membrane 4, preferably by be made of the hybrid resin it is this containing
The layer of cyclic polyolefin resin is set as middle layer, but in the case where outer side form 3 or internal membrane 4 are multilayer, can also be set
For the layer other than middle layer.
For manufacturing the method for the multiple film 2 of multi-bag 1, such as it is preferable to use expansion embrane methods to obtain.Expanded film
Become pipe (tube) shape (tubular) in advance, can be used in the state of manufacturing, have the advantage that the nothing in rear process
Film need to be made into tubular again, seam will not be generated.Also, for expanded film, can not only it is easy to manufacture go out the thin film of thickness,
It also being capable of the thicker film of thickness out easy to manufacture.
As general expansion embrane method, for example, the melting resin of tubulose will be extruded as through die sleeve (die) from extruder,
Along vertical direction pull-up, air is supplied during by such melting resin along vertical direction pull-up and keeps melting resin swollen
Be expanded into tubulose, be made into flat film while being gas-cooled (air cooling) and on winding device, so as to
It accesses tubular film with the volume (volume youngster) of flat winding.
In addition, in the case where multiple film 2 is made into tubular film, for being not present on outer side form 3 and internal membrane 4
Outside and the layer (internal layer) being in contact preferably are mutually bonded (blocking) (bonding bonding).Here, " being mutually bonded " is
Refer to, the film and film being in contact, is not melted by the other media such as adhesive or heat and apply bonding completely integrated, doubtful bonding
And become the state of soft (flexible).Bonding can occur in the entire surface of film, can also generate in a upper part of film.
By bonding, so that outer side form 3 is integrated with internal membrane 4 whens bag making etc., operability is good.
Closed to make tubular film generate bonding, for example, to the tubular film of the polyolefins made of expanded film method into
Row folds, and is pressurizeed using nippin rolIer etc., squeezes out the air between the film to coincide on one side, is wound into carry out one on one side
The 2 flat tunics of secondary folding, thus, it is possible to easily be manufactured.
It is the basic structure of multi-bag 1 above, multi-bag 1 above-mentioned has such feature: by forming tear initiation
51, user breaks a seal substantially in parallel easily with respect to transversal sealing portion 7.Therefore, if torn using tear initiation 51
Kaifeng multi-bag 1 can be torn simplerly along with multiple film 2 is formed by the material being easy to tear so that tearing sheet from
Multi-bag 1 separates.
In the case where multi-bag 1, since it is made of multiple film 2, the tearing from outer side form 3 can be generated
Piece, multiple tearing sheet from the tearing sheet of internal membrane 4 etc., they are possible to be scattered in surrounding, or enter in bag in box,
It handles many and diverse.
As a result, in the multi-bag of present embodiment 1, as shown in Figure 1 and Figure 2, corresponding to being formed in tearing for the portion of putting the palms together before one 5
It splits beginning portion 51, setting tearing stop 10, so that the tearing of the multiple film 2 since tear initiation 51 stops herein.
The tearing of multiple film 2 since tear initiation 51, advances substantially in parallel relative to transversal sealing portion 7.That is,
The tearing of multiple film 2 is advanced approximately along the x-x line on Fig. 2.Therefore, stop as long as forming tearing in a manner of stopping the x- line
Portion 10, it will be able to stop the tearing of multiple film 2 herein, tearing sheet will not be made to separate from multi-bag 1.
Stop 10 is torn in the same manner as back sealing 6, transversal sealing portion 7, is to be formed by heat seal as melt-coating part
, in the case where example shown in Fig. 2, centered on the position of x-x line, tearing bifurcated etc. is estimated, is formed and is provided in two sides
Length.In the tearing stop 10 as melt-coating part, outer side form 3,4 integration of internal membrane of multiple film 2 are made by deposition,
Intensity is enhanced, realizes the function of making tearing not advance further.
For tearing the forming position of stop 10, as described above, being located at the position intersected with x-x line, formed as far as possible
In the position (near end) on the close side parallel with the back sealing 6 of multi-bag 1.If tearing the forming position of stop 10
Far from the side, it is likely that because forming the tearing stop 10 as melt-coating part, and cause to influence to form being used for for multi-bag 1
Store the space of content.
In the example shown in Fig. 2, tearing stop 10 is formed with defined length, but not limited to this, such as such as Fig. 3 institute
Show, also can be formed as linear from one end of multi-bag 1 to the other end in parallel with back sealing 6.As a result, in multiple film 2
In the case that tearing deviates x-x line, it also can reliably stop tearing.
Alternatively, as shown in figure 4, tearing stop 10 can be also formed as to arc-shaped, end 10a, 10b reach multiple
The side of bag 1.In this case, content will not be packed by the part that the tearing stop 10 of arc-shaped fences up.Fig. 5 is and cross
The example of tearing stop 10 has been integrally formed in sealing 7.
In turn, as shown in fig. 6, can also tear stop 10 at setting two.Similarly, Fig. 7 is linear at setting two
Tearing stop 10 example.So, by tearing stop 10 at setting two, can become makes tearing sheet to provide
The state that is connect with the ontology of multi-bag 1 of length, be reliably prevented from disengaging.
In multi-bag 1 above-mentioned, in order to reliably stop tearing, tearing stop can will be also formed by deposition
10 mode with indentation come stop tearing by way of be combined.Fig. 8 is that circular tearing stop 10 is formed by deposition
And the example of semicircular indentation 11 is formed in the center of tearing stop 10.Fig. 9 is to be integrally formed to tear with transversal sealing portion 7
Stop 10 is split, similarly forms the example of semicircular indentation 11 in the center of tearing stop 10.
In the tearing of multi-bag 1, in the case where not stopping tearing by tearing stop 10, breach can be reached and is used for
Stop the indentation 11 of tearing.If breach is connected with indentation 11, tear edge can be to the two of the tearing direction downstream side of indentation 11
Locate end dispersion, play a role to not be re-used as shear strength, so that tearing stops.Thereby, it is possible to reliably stop tearing
It splits.
In addition, though the multiple film 2 in tearing stop 10 is deposition state, but as shown in Figure 10, not only to joint
Internal membrane 4 between melt it is deposited, can also (outer side form 2 opens, internal membrane 2 by whole films of the coincidence including outer side form 3
, count 4) deposition is integral；Can also be as shown in figure 11, to not deposition between the internal membrane 4 to contact with each other, but respectively will
Outer side form 3 carries out deposition with internal membrane 4.As not to deposition is carried out between the internal membrane 4 to contact with each other but externally side form 3 with
Internal membrane 4 carry out deposition mode, be also shown in Fig.12, only to table or in side outer side form 3 and internal membrane 4 carry out
Deposition.
In the case where the former (example shown in Fig. 10), is formed and melt firm melt-coating part (the tearing stop for having applied 4 films
10) tearing of multiple film 2, can more reliably be stopped.In the case where the latter (Figure 11 and Figure 12 shown in example), due to
Not to carrying out deposition between internal membrane 4, therefore form the content accommodating space that tearing stop 10 does not interfere with multi-bag 1
Form.
Multi-bag 1 above-mentioned is used as the inner bag of bag in box, housing corrugation chest made of paper or metal can etc., and at it
In filled with being contained in the state of content.Figure 13 shows the usage mode for the multi-bag 1 being incorporated in outer container 20, opens
Outer container 20, break a seal multi-bag 1, to take out content.
Figure 14 is the figure for showing the opening status of multi-bag 1.When breaking a seal multi-bag 1, across tear initiation 51 and on
Under catch the portion of putting the palms together before one 5, to two laybacks.It is as a result, starting point with tear initiation 51, multi-bag 1 is torn.The tearing can be set to
Stop at the tearing stop 10 of multi-bag 1.Figure 15 shows the state of the multi-bag 1 after tearing, and the tearing of multi-bag 1 is being torn
Stop at stop 10, tearing sheet keeps the state connecting with the ontology of multi-bag 1.
Next, being directed to the manufacturing method of multi-bag 1, enumerates using pillow type packing machine 100 shown in Figure 16 and made
The example made carries out.In the case where manufacturing multi-bag 1 using pillow type packing machine 100, manufactured in the following order, that is,
Multiple stacked film 34 is set to tubular by the 1st process；2nd process forms back sealing (vertical sealing portion) 6；3rd process, under formation
The transversal sealing portion 7 of side；4th process fills packed article W；5th process forms the transversal sealing portion 7 of upside；6th process, cutting
The boundary line of the bag of sequential like.It is illustrated below as process sequence.
In the 1st process that multiple stacked film is set to tubular, the multiple stacked film 34 extracted out successively from web-like film 35,
Flaring die (Former) 112 is directed to via multiple draw-off rollers 120,121.From web-like film 35 to the road of flaring die 112
Diameter on the way, is configured with sensor 119, detects printing in the longitudinal direction every certain (regulation) interval on multiple stacked film 34
Recording mark, to send out centainly (regulation) length according to certain (regulation) time interval on the track of packing machine 100
Multiple stacked film 34.Multiple stacked film 34 is bent into tubular in a period of through flaring die 112, to become with two ora terminalis
The inner face and the mutually opposed mode of inner face in portion form the form of the cylindrical body in the portion of putting the palms together before one.
In the 2nd process for forming vertical sealing portion, cooperate multiple stacked film 34 with certain (regulation) time interval movement
On opportunity, vertical sealer 113 makes bearing surface be contacted, be separated with the portion of putting the palms together before one of multiple stacked film 34, to carry out thermally welded, shape
At back sealing 6.In addition, simultaneously, also stop 10 can be torn by thermally welded formation.
In 3rd process of the transversal sealing portion on the downside of formation, if the thermally welded end carried out by indulging sealer 113,
Then closure is capable of the smoothing out with the fingers along roller 115 of freely openable, to smooth out with the fingers along the cylindrical body formed by multiple stacked film 34.As a result, flat
The specified position of cylindrical body is closed horizontal sealer 116,117, forms the transversal sealing portion 7 of downside.
In the 4th process of filling packed article, the quilt of filling specified amount is put into cylindrical body followed by hopper 111
Packing material W.
In 5th process of the horizontal sealing on the upside of formation, after opening is smoothed out with the fingers along roller 115, horizontal sealer 116,117, make
Conveying roller 114 rotates, to take out cylindrical body and the multiple stacked film 34 being contiguous therewith together with the packaging bag 1a before separating
Defined length out.It is closed horizontal sealer 116,117, it is thermally welded to specified position progress, to form the transversal sealing portion of upside
7, it is formed simultaneously the transversal sealing portion 7 of the downside of next packaging bag of the upstream on coupled track.
In the 6th process of the boundary line of the bag of cutting sequential like, closed amputation device (breathcut) 118 is being clipped point
While transversal sealing portion 7 of the transversal sealing portion 7 of downside from preceding packaging bag 1a and the upside being contiguous therewith, by the two boundary
It is divided into two, falls on multi-bag 1 on conveyer 130.
It this concludes the description of using embodiments of the present invention, but the present invention is certainly not limited to embodiment above-mentioned, not
It is detached from the range of spirit, is able to carry out various changes.
For example, in the above-described embodiment, having enumerated the multi-bag for applying the present invention to so-called adhesion type of putting the palms together before one
Example, but can also apply to the multi-bag etc. of so-called sealed tube adhesion type.
The explanation of appended drawing reference
1 multi-bag
2 multiple films
3 outer side forms
4 internal membranes
5 put the palms together before one portion
51 tear initiations
6 back sealings
10 tearing stops
11 indentations
Claims (10)
1. a kind of multi-bag is made of multiple film, the multiple film composition is made of outer side form with internal membrane, which is characterized in that
It is formed with back sealing, the back sealing is to carry out defined width in the state of being overlapped the both ends of the multiple film
Deposition and formed,
It is formed with multi-bag, the multi-bag fills and forming transversal sealing portion and is sealed with content, and the transversal sealing portion is
Nearby deposition is carried out with two ora terminalis of the defined width pair side orthogonal with the back sealing and is formed,
There is tear initiation near the back sealing, the tear initiation is used for relative to the transversal sealing portion substantially
It breaks a seal in parallel,
Corresponding to the forming position of the tear initiation, tearing stop has been formed about in end.
2. multi-bag as described in claim 1, which is characterized in that
To make mode mutually opposed between the internal membrane, the both ends of the multiple film is made to be overlapped and be formed with the portion of putting the palms together before one,
It is formed in the portion of putting the palms together before one to carry on the back sealing made of defined width deposition, and the tear initiation is formed in
It is described to put the palms together before one in portion.
3. multi-bag as claimed in claim 1 or 2, which is characterized in that
The tearing stop is made of melt to multiple film with specific length substantially in parallel with the back sealing and applying
Melt-coating part.
4. multi-bag as claimed in claim 3, which is characterized in that
The tearing stop is upwardly formed in the formation side of the entire back sealing.
5. multi-bag as claimed in claim 3, which is characterized in that
The tearing stop is formed as arc-shaped in such a way that both ends reach one side of bag.
6. the multi-bag as described in any one of claim 3~5, which is characterized in that
The tearing stop is carried out made of deposition to all two multiple films of coincidence.
7. the multi-bag as described in any one of claim 3~5, which is characterized in that
The tearing stop is carried out made of deposition to the outer side form and internal membrane of multiple film.
8. the multi-bag as described in any one of claim 1~7, which is characterized in that
The multiple film is made of two opposed films, and the film of tubulose is set to flat and by two by two opposed films
It is bag-shaped for opening the both ends closure of overlapping.
9. the multi-bag as described in any one of claim 1~8, which is characterized in that
The outer side form, according to from the outside of multi-bag to the sequence of inside, successively by being made of straight-chain low density polyethylene (LDPE)
Layer, tearable resin layer, the resin layer being made of polyolefin resin constitute,
The internal membrane, according to from the outside of multi-bag to the sequence of inside, with this by the layer, easily that is made of polyolefin resin
Tearing resin layer is made of the layer that straight-chain low density polyethylene (LDPE) is constituted.
10. multi-bag as claimed in claim 9, which is characterized in that
The tearable resin layer is by the cyclic polyolefin containing 3~99 mass % relative to entire tearable resin layer
Hybrid resin constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642135.0A CN110329657B (en) | 2017-03-02 | 2018-02-23 | Bag (A |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-039915 | 2017-03-02 | ||
| JP2017039915A JP7209937B2 (en) | 2017-03-02 | 2017-03-02 | multiple bags |
| PCT/JP2018/006830 WO2018159509A1 (en) | 2017-03-02 | 2018-02-23 | Multilayer bag |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910642135.0A Division CN110329657B (en) | 2017-03-02 | 2018-02-23 | Bag (A |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110121465A true CN110121465A (en) | 2019-08-13 |
| CN110121465B CN110121465B (en) | 2022-11-04 |
Family
ID=63370805
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880005533.5A Active CN110121465B (en) | 2017-03-02 | 2018-02-23 | Multiple bag |
| CN201910642135.0A Active CN110329657B (en) | 2017-03-02 | 2018-02-23 | Bag (A |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910642135.0A Active CN110329657B (en) | 2017-03-02 | 2018-02-23 | Bag (A |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7209937B2 (en) |
| CN (2) | CN110121465B (en) |
| WO (1) | WO2018159509A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7230260B2 (en) | 2017-12-18 | 2023-02-28 | キヤノン株式会社 | Image forming apparatus and its control method |
| DE202018106857U1 (en) * | 2018-12-03 | 2018-12-07 | Takigawa Corporation Japan | Tear-resistant packaging bag |
| JP2021187488A (en) * | 2020-05-28 | 2021-12-13 | キョーラク株式会社 | Packaging bag |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018159509A1 (en) | 2018-09-07 |
| CN110329657B (en) | 2022-07-22 |
| JP2018144837A (en) | 2018-09-20 |
| CN110329657A (en) | 2019-10-15 |
| JP7209937B2 (en) | 2023-01-23 |
| CN110121465B (en) | 2022-11-04 |
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