CN105733138B - Tubular package - Google Patents
Tubular package Download PDFInfo
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- CN105733138B CN105733138B CN201510931628.8A CN201510931628A CN105733138B CN 105733138 B CN105733138 B CN 105733138B CN 201510931628 A CN201510931628 A CN 201510931628A CN 105733138 B CN105733138 B CN 105733138B
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- Prior art keywords
- precursor film
- film
- sealing
- boundling
- side direction
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/08—Homopolymers or copolymers of vinylidene chloride
-
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
-
- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/22—Details
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D2565/38—Packaging materials of special type or form
- B65D2565/381—Details of packaging materials of special type or form
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/08—Homopolymers or copolymers of vinylidene chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
Abstract
There is provided a kind of sealing of clamping section excellent tubular package.【Solution】A kind of tubular package, possesses：(A) filler；(B) boundling sealing is carried out by the both ends to long side direction, makes tubular precursor film that the filler is filled, being made up of polyvinylidene chloride based resin film；(C) welding is on the precursor film, so as to wind and cover reinforcing band part, being made up of polyvinylidene chloride based resin film that the precursor film is sealed by boundling, characterized in that, percent thermal shrinkage R of the short side direction of the precursor film before boundling sealing at 100 DEG CB‑TDIn the range of 10.0~18.9%, acetone extraction rate is below 9.0%, and the thorn energy at 120 DEG C is in more than 2.1mJ.
Description
Technical field
The present invention relates to process food to be used as the tubular package of filler using cheese, sausage, breaded fish stick, ham etc..
Background technology
Seal as the tubular film that will be filled with the processed foods such as cheese, sausage, breaded fish stick, ham, thus obtain
Obtain encapsulating method during each package body, it is known to the method that boundling sealing is carried out to the end of tubular film.But using this
The tubular package that the method for the end boundling sealing of tubular film is obtained, is present by its closure part or sealing
Side, the problem of easily pin hole occur.Therefore, in order to solve this problem, using the long side direction of precursor film to tubular
Both ends carry out boundling sealing, the method that band is reinforced in welding in the boundling closure part for have been carried out the precursor film.But
It is, using the tubular package that welding is reinforced the method for band and obtained on the part that the boundling of precursor film is sealed, in tubular
It is not necessarily sufficient in terms of the sealing of pin hole and package body on film.
Therefore, a kind of tubular package has been recorded in Japanese Patent Laid-Open 2009-46148 publications are patent document 1,
It possesses filler；By carrying out boundling sealing to the both ends of long side direction, make the mother for the tubular that the filler is filled
Material film；Welding is on the precursor film, so as to wind and cover the reinforcing for the part that the precursor film is sealed by boundling
Band, wherein, by being set in the percent thermal shrinkage and stretching secant spring rate before the welding of the reinforcing band in particular range,
It can be adequately suppressed on tubular film and pin hole occur, improve sealing.
But, these are reinforced with based on studying, and the leeway of research is left to precursor film.Band is reinforced by welding and obtained
Sealing, particularly improve the part that band is reinforced in welding, the sealing of hereinafter referred to as " clamping section " be it is limited, because
This is, it is necessary to develop the new method for the sealing that can further improve tubular package.
Prior art literature
Patent document
Patent document 1：Japanese Patent Laid-Open 2009-46148 publications
The content of the invention
The invention problem to be solved
The present invention is in view of problem present in above-mentioned conventional art, it is therefore intended that provide a kind of sealing of clamping section good
Tubular package.
Technical scheme
The inventors of the present invention, to reach above-mentioned purpose, are repeated the result studied with keen determination and are found that a kind of tubular
Package body, it possesses：(A) filler；(B) boundling sealing is carried out by the both ends to long side direction, makes the filler quilt
Tubular precursor film filling, being made up of polyvinylidene chloride based resin film；(C) welding is on the precursor film, from
And wind and cover reinforcing part, being made up of polyvinylidene chloride based resin film that the precursor film is sealed by boundling
Band, wherein, it is poly- inclined in particular range using acetone extraction rate, thorn energy, percent thermal shrinkage by being used as the precursor film
Vinylidene chloride resin film, the sealing of tubular package clamping section is improved, so as to complete the present invention.
That is, tubular package involved in the present invention, possesses：(A) filler；(B) both ends to long side direction are passed through
Boundling sealing is carried out, makes tubular precursor film that the filler is filled, being made up of polyvinylidene chloride based resin film；
(C) welding is on the precursor film, thus wind and cover the precursor film by boundling seal it is part, by gathering inclined two
The reinforcing band that vinyl chloride resin film is constituted,
Characterized in that, percent thermal shrinkage R of the short side direction of the precursor film before boundling sealing at 100 DEG CB-TD
In the range of 10.0~18.9%, acetone extraction rate is below 9.0%, and the thorn energy at 120 DEG C is in more than 2.1mJ.
The tubular package of the present invention, heat of the short side direction at 100 DEG C of the precursor film before the sealing of its boundling
Shrinkage factor RB-TDWith the percent thermal shrinkage R of the long side direction of the reinforcing band before welding at 100 DEG CC-MD, preferably meet following formula
(F1)：
- 8%≤RB-TD-RC-MD≤ 9% (F1)
Shown in condition, more preferably meet following formula (F1a)：
4.5%≤RB-TD-RC-MD≤ 6.5% (F1a)
Shown in condition.
Moreover, the tubular package of the present invention, thorn energy of the precursor film at 120 DEG C before the sealing of its boundling,
Preferably more than 2.5mJ, in addition, boundling sealing before the precursor film long side direction stretching secant spring rate EB-MD,
It is also preferred that in the range of 332~450MPa.
In addition, the tubular package of the present invention, as the precursor film, preferably by containing vinylidene and chlorine
The polyvinylidene chloride based resin film of the copolymer of vinyl monomer is constituted, in addition, as the reinforcing band, preferably by containing inclined
The polyvinylidene chloride based resin film of the copolymer of dichloroethylene monomer and VCM is constituted.
Beneficial effect
According to the present invention, the good tubular package of the sealing of clamping section can be obtained.
Embodiment
Hereinafter, mode is appropriately carried out according to the present invention, be specifically described.
Tubular package involved in the present invention, possesses：(A) filler；(B) carried out by the both ends to long side direction
Boundling is sealed, and makes tubular precursor film that the filler is filled, being made up of polyvinylidene chloride based resin film；(C)
Welding on the precursor film so that wind and cover the precursor film by boundling seal it is part, by gather inclined dichloro
The reinforcing band that vinyl resins film is constituted,
Characterized in that, percent thermal shrinkage R of the short side direction of the precursor film before boundling sealing at 100 DEG CB-TD
In the range of 10.0~18.9%, acetone extraction rate is below 9.0%, and the thorn energy at 120 DEG C is in more than 2.1mJ.
As (A) filler involved in the present invention, there is no particular restriction, for example, can enumerate cheese, sausage, breaded fish stick, fire
Leg etc. is processed food.
(precursor film)
Precursor film involved in the present invention is to carry out boundling sealing by the both ends to long side direction, makes the filling
The tubular film that thing is filled.Moreover, precursor film involved in the present invention, it is necessary to be by polyvinylidene chloride based resin film
The film of composition.In this manual, polyvinylidene chloride resinoid hereinafter referred to as PVDC resinoids refer to, with inclined two chloroethene
Alkene is the copolymer resin of main component.This PVDC resinoids, have good barrier to oxygen and water vapour, therefore, make
For precursor film in use, the appearance of the degradation phenomenas such as oxidation or the decrement of filler can be suppressed, commodity value is kept.In addition,
This PVDC resinoids, it is its heat filling adaptability, also very excellent to the adaptability of high-temperature sterilization treatment such as boiling or distilling, because
This, processes food as the precursor film material of the tubular package of filler as with cheese, sausage, breaded fish stick, ham etc.
It is especially suitable.
In precursor film involved in the present invention, thermal contraction of the short side direction (TD) at 100 DEG C before boundling sealing
Rate RB-TD, it is necessary in the range of 10.0~18.9%.Percent thermal shrinkage RB-TDIf 10.0%, contraction during distillation will
Deficiency, will so produce gauffer on tubular package, on the contrary, more than 18.9%, the sealing of clamping section is just
It can decline.In addition, fully shrinking during from by distilling, thus becoming to be difficult to occur on tubular package gauffer this viewpoint and coming
See, be used as the percent thermal shrinkage RB-TD, preferably 15.0~18.9%.In addition, the precursor film before this boundling sealing
Percent thermal shrinkage, can be by controlling stretching ratio etc. during manufacture film, to be suitably adjusted.
In addition, in precursor film involved in the present invention, the acetone extraction rate before boundling sealing need 9.0% with
Under.The acetone extraction rate of precursor film is more than 9.0%, and precursor film material involved in the present invention is PVDC resinoids
The decline of melt viscosity after melting is larger, when being sealed carrying out pack to precursor film using reinforcing band, it is impossible to securely
Welding, the sealing of clamping section declines.In addition, from the viewpoint of the further sealing for improving clamping section, this mother metal is thin
Acetone extraction rate before the boundling sealing of film, preferably less than 6.0%, more preferably less than 4.0%, particularly preferably 3.0%
Below.In addition, as the lower limit of acetone extraction rate, be not particularly limited, but from film it is extrudability from the viewpoint of, it is excellent
Elect more than 1.0% as.In addition, the acetone extraction rate of the precursor film before this boundling sealing, can be by controlling polymerization originally
Temperature, reaction time when the involved precursor film material of invention is PVDC resinoids, to be suitably adjusted.
Moreover, in precursor film involved in the present invention, the thorn energy demand before boundling sealing is in more than 2.1mJ.It is female
The thorn energy of material film is less than 2.1mJ, film shrunk stress when precursor film will bear incessantly to distill, it is possible to meeting
Occurs pin hole on clamping section, the sealing of clamping section declines.In addition, the viewpoint from the further sealing for improving clamping section is come
See, thorn energy of this precursor film before boundling sealing is preferably more than 2.5mJ, and more preferably more than 2.8mJ is further excellent
Elect more than 3.2mJ, particularly preferably more than 3.5mJ as.In addition, the thorn energy of the precursor film before this boundling sealing,
Can be by controlling precursor film the material involved in the present invention i.e. molecular weight of PVDC resinoids, vinylidene chloride and vinyl chloride
Copolymerization ratio etc., to be suitably adjusted.
In addition, in precursor film involved in the present invention, the stretching secant bullet of the long side direction (MD) before boundling sealing
Property rate EB-MD, preferably in the range of 332~450MPa, in addition, the stretching secant spring rate E of short side direction (TD)B-TD, preferably
In the range of 220~370MPa.The stretching secant spring rate E of long side directionB-MDOr the stretching secant spring rate of short side direction
EB-TDIf the not enough lower limit, precursor film is caused to lack enough intensity, therefore, will be on the part sealed by boundling
There is pin hole, on the contrary, more than if the upper limit, the installation for reinforcing band is that matching (fit) property will decline, and reinforcing band can not
With precursor film welding, the sealing of the tubular package obtained declines.In addition, the mother metal before this boundling sealing is thin
The stretching secant spring rate of film, the addition of the additive such as copolymerization ratio, plasticizer that can be by controlling vinylidene chloride and vinyl chloride
Amount, to be suitably adjusted.
Thickness before the boundling sealing of precursor film involved in the present invention, there is no particular restriction, preferably at 20~80 μm
In the range of, more preferably in the range of 30~60 μm.If the thickness deficiency lower limit, the tubular package obtained has
Because from outside impact and friction and the tendency for pin hole easily occur during transport, on the other hand, more than the upper limit, then
Cause the boundling of precursor film end insufficient, the part without welding occurs with including including reinforcing, and obtained
The insufficient tendency of the sealing of tubular package.
The material of precursor film involved in the present invention is PVDC resinoids, can be by making vinylidene chloride and inclined two chloroethene
Monomer beyond alkene carries out copolymerization to obtain.As the monomer beyond this vinylidene chloride, it is not particularly limited, for example may be used
Enumerate vinyl chloride, acrylonitrile, methacrylate.
In addition, this PVDC resinoids be preferably containing following copolymer resin, the copolymer be 78~84 mass %,
More preferably 79~83 mass %, particularly preferably 80~82 mass % vinylidene chloride, with 22~16 mass %, more preferably
For 21~17 mass %, particularly preferably 20~18 mass % vinyl chloride copolymer.The addition of vinylidene chloride
If the not enough lower limit, have when carrying out melt extruded stretching film, it is impossible to tendency crystallization fully, cause to be difficult to
The tendency being stably filmed, in addition, because the precursor film heat resistance obtained is not enough, problems with will be occurred
Tendency, i.e., the problem of tubular package for the high-temperature heating treatment such as handling by retort sterilisation and obtaining ruptures, on the contrary, surpassing
If crossing the upper limit, because the fusing point of the increase of accompanying crystallization rises, the load for having melt extruded becomes big tendency.
It is PVDC resinoids to precursor film material involved in the present invention, as needed, can also adds other resins.Make
For other this resins, for example, it can enumerate vinyl-vinyl acetate copolymer, methacrylate, methyl methacrylate-fourth
Diene-styrene copolymer etc., the wherein methacrylate are preferably that the carbon number of alkyl is 1~18 methacrylate
The copolymer of ester, for example, methyl methacrylate-butyl methacrylate copolymer.Other this resins, can be added to PVDC
As PVDC resin compositions in resinoid, one part or whole can be also added to the coloring containing pigment in advance and used
In resin combination, and it is added to this coloring resin combination in PVDC resinoids.In addition, from gas barrier property and heat-resisting
From the point of view of the viewpoints such as property, other this resins preferably add into vinylidene chloride composition in the mixture with PVDC resinoids
Content ratio is more than 50 mass %.
Moreover, precursor film material involved in the present invention is PVDC resinoids, in order to assign melting extrusion, heat to it
The characteristic of fissility between stability, draftability, flexibility, coloring and filler etc., can add plasticizer, stabilizer, profit
The additives such as lubrication prescription, colouring agent, surfactant, mercerising polishing agent.In addition, in PVDC resinoids, can hybrid shaping processing
When produce, formed scrap of PVDC resin compositions of cycling and reutilization etc. can be carried out.
As the additive, well-known plasticizer, stabilizer, adhesive, tackifier, pigment, lubrication can be enumerated
Agent, auxiliary agent, filler, surfactant etc..As the plasticizer of liquid, citroflex A-4 (ATBC), two can be enumerated
Acetyl lauric monoglyceride (GDAML), dibutyl sebacate (DBS), di-n-octyl sebacate and diacetyl monoglyceride
(DALG) etc..As stabilizer, the epoxidation such as epoxidised soybean oil (ESBO), epoxidized linseed (ELO) can be enumerated and planted
Thing oil, the amide derivatives of Arrcostab, magnesium hydroxide, tetrasodium pyrophosphate etc..As adhesive, can enumerate polyisobutene (PIB),
Poly- multivalence alcohol such as polybutene (PB), polybutadiene, polyethylene glycol, polyglycerol, polypropylene glycol etc..As tackifier, it can enumerate
Sorbitan carboxylic esterses, methyl glycol fatty acid ester, the interface such as sorbierite list trioleate, glycerine list trioleate are lived
Glycerol fatty acid ester, paraffin class or the cycloalkanes such as naphthenic processing oil, solid paraffin, atoleine are mineral oil such as property agent
Class liquid saturated hydrocarbons etc..As lubricant, the paraffin class such as oxidic polyethylene, solid paraffin can be enumerated；Such as butyramide, penta
Sour acid amides, hexanoic acid amide, octanoic acid (Caprylic acid) acid amides, capric acid (Capric acid) acid amides, lauric amide, Pork and beans
The saturated fats such as the sour acid amides of cool sour acid amides, palm fibre Palm, stearic amide, arachidamide, behenamide (Docosanamide)
Sour acid amides；The unrighted acid acid amides such as oleamide, erucyl amide；Span；Polyglyceryl fatty acid ester；
Such as N- oleyl palmitamides, N- stearyl stearoyls acid amides, N- stearyls oleamide, N- oleyl stearamides, N-
The substituted amides such as stearyl erucamide；The methylol amide such as hydroxymethylstearic acid acid amides；Such as di-2-ethylhexylphosphine oxide stearic acid
The saturated fatty acid bisamides such as acid amides, vinyl di-hydroxy stearic acid acid amides；The unsaturated lipid such as vinyl double erucyl amides
Fat acid bisamide；Fragrant same clan bisamide etc. xyxylene di-hydroxy stearic acid acid amides between.As auxiliary agent, it can enumerate：
Ethylene-vinyl acetate copolymer；Such as 2,6- di-t-butyls -4- methyl-phenol (BHT), triethylene glycol-bis- [3- (the tertiary fourths of 3-
Base -5- methyl -4- hydroxyphenyls) propionic ester], 2,4- dimethyl -6-S- alkyl phenols, 2,4- dimethyl -6- (1- methyl pentadecanes
Base) phenol, and the phenol antioxidant such as these mixture；The thioether class such as thiodipropionic acid, thiodipropionic acid diester is anti-oxidant
Agent；Phosphite antioxidant etc. such as trisnonyl phenyl phosphite, distearyl pentaerythrityl diphosphite.As
Inserts, can enumerate silica, calcium carbonate, zeolite etc..As interfacial agent, sorbitan carboxylic esterses class can be enumerated
Deng.
As the manufacture method of precursor film involved in the present invention, for example, following methods can be used, that is, use melting extrusion
The PVDC resinoids are heated and melted by machine, and double by the progress of the methods such as blow molding method after tubular nozzle extrusion, chilling
The method of axle stretching.The stretching ratio of longitudinal direction (MD) when biaxial stretch-formed, more preferably preferably 2~5 times, 2.2~3.5 times.
In addition, the stretching ratio of horizontal (TD), more preferably preferably 2~5 times, 3.5~4.5 times.Draft temperature, preferably 15~40
DEG C or so, more preferably 15~30 DEG C or so.
In addition, in the manufacture method of precursor film involved in the present invention, in order to improve the dimensionally stable of precursor film
Property, the film after stretching can be made, relax or shrink to longitudinal direction (MD) and horizontal (TD).The mitigation rate of longitudinal direction (MD), preferably 1~
20% or so, more preferably 5~9% or so.In addition, the mitigation rate of horizontal (TD), preferably 1~20% or so, more preferably 5
~10% or so.Relax temperature, more preferably preferably 40~80 DEG C or so, 50~70 DEG C or so.
(reinforcing band)
(C) involved in the present invention reinforces band, and welding is on the precursor film, so as to wind and to cover the mother metal thin
The part that film is sealed by boundling.Moreover, reinforcing band involved in the present invention, it is necessary to be by polyvinylidene chloride based resin film structure
Into film.As band is reinforced, by using the reinforcing band being made up of polyvinylidene chloride based resin film, so as to increase reinforcing
Weldability between band and the precursor film.
Reinforcing band involved in the present invention, percent thermal shrinkage R of the long side direction (MD) at 100 DEG C before weldingC-MD, preferably
In the range of 10~27%, more preferably in the range of 12~25%, particularly preferably in the range of 13~24%.Thermal contraction
Rate RC-MDIn the scope, between the sealing of the tubular package obtained and change in size as reinforcing band etc.
Equilibrium, will become good.On the other hand, percent thermal shrinkage RC-MDIf the not enough lower limit, in the tubular packaging obtained
On the both ends of body, pin hole appearance can not be just adequately suppressed, the sealing of the tubular package obtained becomes inadequate
Tendency, on the contrary, more than if the upper limit, will producing as reinforcing with the change in size before use or excess shrinkage institute
Caused corrugation, reinforces the part with hardening is shunk in addition, having, is in contact and is damaged with the package body positioned at periphery, so as to lure
The tendency in hairpin hole.In addition, percent thermal shrinkage R of the short side direction (TD) of the reinforcing band before welding at 100 DEG CC-TD, from
Suppress the clamping section poor sealing caused by the contraction difference between precursor film and reinforce the folder caused by the excess shrinkage of band
From the viewpoint of the shape defect in tight portion, preferably in the range of 8~35%.In addition, the reinforcing band before this welding
Percent thermal shrinkage, can be by controlling stretching ratio during manufacture film etc., to be suitably adjusted.
In addition, reinforcing band involved in the present invention, the stretching secant spring rate E of the long side direction (MD) before weldingC-MD, it is excellent
It is selected in the range of 250~450MPa, more preferably in the range of 260~420MPa, the model particularly preferably in 270~400MPa
In enclosing, in addition, the stretching secant spring rate E of short side direction (TD)C-TD, preferably in the range of 220~370MPa.Long side direction
Stretching secant spring rate EC-MDWith the stretching secant spring rate E of short side directionC-TDIn the scope, the cylinder obtained
Balanced between the hardness etc. of the sealing of shape package body with reinforcing band will become good.On the other hand, the drawing of long side direction
Stretch secant spring rate EC-MDOr the stretching secant spring rate E of short side directionC-TD, if the not enough lower limit, reinforcing band will not have
Enough hardness, therefore, on the part sealed by boundling of precursor film, when band is reinforced in addition, it is easy to addition occur and add
Gu band is local uneven, therefore, on the both ends of the tubular package obtained, can not just be adequately suppressed pin hole and go out
It is existing, the tendency of the sealing decline of the tubular package obtained, on the contrary, if exceeding the upper limit, reinforcing band to mother metal
The installation for the part that film is sealed by boundling i.e. matching will decline, reinforce band can not with precursor film welding, obtained
The tendency that the sealing of the tubular package obtained declines.In addition, the stretching secant spring rate of the reinforcing band before this welding,
Can be by controlling the additions of the additives such as plasticizer, to be suitably adjusted.
The thickness of reinforcing band involved in the present invention before welding, preferably in the range of 10~150 μm, more preferably 30
In the range of~120 μm, particularly preferably in the range of 40~100 μm.If the thickness deficiency lower limit, in tubular package
Manufacturing process in, cause to be difficult to be wrapped on both ends, and have the tendency of not enough as the intensity for reinforcing band.On the other hand,
If thickness exceedes the upper limit, the part welding sealed by boundling of meeting not with precursor film, the tubular packaging obtained
The tendency that the sealing of body declines.
The material of reinforcing band involved in the present invention is PVDC resinoids, can be by making vinylidene chloride and vinylidene chloride
Monomer in addition carries out copolymerization to obtain.As the monomer beyond this vinylidene chloride, it is not particularly limited, for example, can arranges
Lift vinyl chloride, acrylonitrile, methacrylate.It is good from the reactivity between vinylidene chloride in these materials, and institute
From the viewpoint of the control of the physical property of the copolymer of acquisition becomes easily, vinyl chloride is preferably used.
In addition, this PVDC resinoids be preferably containing following copolymer resin, the copolymer be 78~84 mass %,
More preferably 79~83 mass %, particularly preferably 80~82 mass % vinylidene chloride, with 22~16 mass %, more preferably
For 21~17 mass %, particularly preferably 20~18 mass % vinyl chloride copolymer.The addition of vinylidene chloride
If the not enough lower limit, have when carrying out melt extruded stretching film, it is impossible to fully crystallize, it becomes difficult to stably
The tendency being filmed, in addition, because the reinforcing band heat resistance obtained is not enough, the tendency of problems with will be occurred, i.e.,
The problem of tubular package for the high-temperature heating treatment such as handling by retort sterilisation and obtaining ruptures, on the contrary, more than described
If the upper limit, because the fusing point of the increase of accompanying crystallization rises, the load of melt extruded just has the tendency for becoming big.
The material of reinforcing band involved in the present invention is PVDC resinoids, in order to control the thermal contraction of obtained reinforcing band
Rate and stretching secant spring rate, for example, the stabilizers such as the plasticizer such as dibutyl sebacate, epoxidized vegetable oil, fat can be added
The polishing agent of the mercerisings such as the lubricants such as acid esters, calcium carbonate.
Reinforcing band involved in the present invention, for example, can manufacture by the following method, i.e., will be described with melt extruder
The heating melting of PVDC resinoids, and it is biaxial stretch-formed by the progress of the methods such as blow molding method after tubular nozzle extrusion, chilling, and
By the reinforcing band film obtained, cut into suitably sized.The stretching ratio of longitudinal direction (MD) when biaxial stretch-formed, be preferably
2~5 times, more preferably 2.2~3.5 times.In addition, the stretching ratio of horizontal (TD), preferably 2~5 times, more preferably 3.5~
4.5 again.Draft temperature, more preferably preferably 15~40 DEG C or so, 15~30 DEG C or so.
In addition, in the manufacture method of reinforcing band involved in the present invention, can in order to improve the dimensional stability for reinforcing band
Make the film after stretching, relax or shrink to longitudinal direction (MD) and horizontal (TD).The mitigation rate of longitudinal direction (MD), preferably 1~20%
Left and right, more preferably 5~9% or so.In addition, the mitigation rate of horizontal (TD), preferably 1~20% or so, more preferably 5~
15% or so.Relax temperature, more preferably preferably 40~80 DEG C or so, 50~70 DEG C or so.
In addition, the PVDC resinoids used in the present invention, can be by suspension polymerisation, emulsion polymerization, polymerisation in solution
Any one polymerization synthesize, still, in order to form mixture as powdered resin, preferably with 40~600 μ
M or so granularity, is obtained without the suspension polymerization of pulverizing process.In addition, PVDC resinoids can contain it when it polymerize
There are antioxidant, plasticizer, epoxide etc..The powdered resin of PVDC resinoids, in general with 40~600 μm or so
Average grain diameter.In the present invention, the powdered resin containing the additive such as epoxide and plasticizer can be used during polymerization.When
So, the powdered resin without the additive such as epoxide and plasticizer, could be used that in the present invention.Contain epoxy during polymerization
The powdered resin of the PVDC resinoids of the additive such as compound and plasticizer is, before polymerization, or in the course of the polymerization process, and or
On at least any one time point after polymerisation, these additives are added in polymerisation system, it is covered generation
In PVDC resinoids, the resin reclaimed as powdered resin.
In addition, in the present invention, precursor film or the percent thermal shrinkage for reinforcing band are by precursor film or reinforce band film
As sample film, according to JIS：Method described in Z1709 is measured.That is, in the long side direction of sample film
(MD) or on short side direction (TD), make the distance between 2 points for 100mm and mark, soaked 3 minutes in 100 DEG C of boiling water
Afterwards, cooled down in running water, then, measure it is described between 2 points apart from d, that is, the point to point after being immersed in boiling water
Distance, unit is mm, and calculates reduced value (100-d) mm of the distance between 2 points after being soaked in boiling water, relatively
The percentage apart from 100mm between 2 points be immersed in before boiling water, as precursor film or reinforcing band at 100 DEG C
Percent thermal shrinkage, unit is %.
Precursor film or the stretching secant spring rate for reinforcing band, are that precursor film or reinforcing band film is thin as sample
Film, the tensilon cupping machines produced using A＆D companies, according to JIS：Method described in K7113 items 8.5 is surveyed
Fixed.That is, cut from precursor film or reinforcing band with film, make long side direction (MD) measurement sample film or short side
The width of direction (TD) measurement sample film respectively becomes 20mm, and then sample film is arranged on cupping machine, surveys
Fixed condition is 23 DEG C, 50%RH, make between the long side direction of the sample film or the test length i.e. chuck of short side direction distance into
For 100mm, and tension test is carried out by 10mm/ points of speed.Moreover, deformation will be provided：ε is set to 0.025, reads sample film
Deformation quantity until reach 0.025 untill needed for stress：F, unit is N, and further according to the area of section of sample film：
S, unit is mm2, use relationship below：
(stretching secant spring rate：E)=(F/ (ε × S))
Calculate precursor film or reinforce the stretching secant spring rate of band, unit is MPa.
The acetone extraction rate of precursor film is measured according to following methods.That is, as sample, by precursor film 5g
It is immersed in 60 DEG C of tetrahydrofuran (THF) 100ml, is allowed to dissolve.And the THF solution obtained is stirred, it is same with this
When, each a small amount of progress of methanol is dripped, drippage total amount is 500ml, sample is carried out after reprecipitation, by mixed solvent 90
It is dried at DEG C.Afterwards, methanol 50ml is added, including the sample of reprecipitation, solution is poured into apparatus,Soxhlet's,
Absorbent cotton is put at an upper portion thereof.Then, methanol 70ml is poured into and dried in advance, and determine the 150ml of quality
Boiling flask in, and on the apparatus,Soxhlet's, extracted 24 hours at 85 DEG C.By the sample after extraction, rope is put into
In family name's extractor, and absorbent cotton is put on top.Then, acetone 120ml is poured into and dried in advance, and determined
In the boiling flask of quality, it is then fitted on apparatus,Soxhlet's, is extracted 24 hours at 75 DEG C.Use filter paper No.5A, i.e. base
In the filter paper of the standard of " JIS P3801-1995 filter paper (chemical analysis use) ", 100ml extract solutions are filled into graduated cylinder, and is put
Enter to being dried in advance, and determine in the 150ml boiling flasks of quality.Used amount is cleaned with carbon tetrachloride
Cylinder, and cleaning fluid is added in boiling flask.In 80 DEG C of constant temperature water tank is adjusted to, apparatus,Soxhlet's dry acetone is used.
Afterwards, dried 1 hour using the drying machine for being adjusted to 105 DEG C, cooling 1 hour is stood in drier, is obtained equipped with extract
Boiling flask quality, and according to following formula, obtain the acetone extraction rate of precursor film, unit is %.
Acetone extraction amount %={ (A-B) × E/ (C × D) } × 100%
A：The quality (g) of boiling flask equipped with extract.
B：The quality (g) for the boiling flask dried in advance.
C：The quality (g) of sample.
D：The amount (100ml) of extract solution after being filtered through filter paper NO.5A.
E：Amount (120ml) for the acetone of extraction.
The thorn energy of precursor film is measured by the following method.That is, on the reinforcing ring that internal diameter is 45mm, peace
Precursor film is filled, that is, will to pierce 50mm/ points of speed at the temperature at which distilling at a temperature of 120CBe needled into mother
Material film, by the load from extensibility 0% to breakaway poing, with displacement principal value of integral, is used as thorn of the precursor film under 120C
Energy, unit is mJ.
(tubular package)
Tubular package involved in the present invention be it is a kind of possess filler described above, precursor film and reinforce band
Package body.The present invention tubular package, its boundling sealing before the precursor film short side direction under 100C heat receipts
Percent thermal shrinkage RC-MD of the long side direction of the reinforcing band before shrinkage RB-TD and welding under 100C, preferably meets following formula
(F1)：
- 8%≤RB-TD-RC-MD≤ 9% (F1)
Shown in condition, more preferably meet following formula (F1a)：
4.5%≤RB-TD-RC-MD≤ 6.5% (F1a)
Shown in condition.As described above, the difference of the respective percent thermal shrinkage by controlling precursor film and reinforcing band, institute
The tendency that the sealing of the clamping section of the tubular package of acquisition is improved.On the other hand, RB-TD-RC-MDValue, it is not enough it is described under
If limit, when carrying out the high-temperature heating treatment such as retort sterilisation processing, reinforce band can excess shrinkage, therefore, have positioned at being obtained
Tubular package portion on the shoulders reinforcing band end on, easily there is the tendency rolled.On the other hand, RB-TD-RC-MDValue,
More than the upper limit, cause reinforcing band insufficient to the tightness of the part sealed by boundling of precursor film, therefore,
The insufficient tendency of the sealing of the clamping section of the tubular package obtained, and there is reinforcing band easily to depart from from tubular package
Tendency.
In addition, the tubular package of the present invention, the stretching of the short side direction of the precursor film before the sealing of its boundling is cut
Linear elasticity rate EB-TDWith the stretching secant spring rate E of the long side direction of the reinforcing band before weldingB-MD, preferably meet following formula
(F2)：
-140MPa≤EB-TD-EC-MD≤80MPa (F2)
Shown in condition, more preferably meet following formula (F2a)：
-135MPa≤EB-TD-EC-MD≤-50MPa (F2a)
Shown in condition.As described above, by controlling precursor film and reinforcing the respective stretching secant spring rate of band
Difference, the tendency that the sealing of the clamping section of the tubular package obtained is improved.On the other hand, EB-TD-EC-MDValue it is not enough
If the lower limit, reinforce band becomes result relatively really up to the mark relative to precursor film so that reinforces band and is collected to precursor film
The installation of the part of beam sealing is that matching declines, and reinforcing band can be with precursor film welding, the tubular packaging obtained
The tendency that the sealing of body declines.On the contrary, EB-TD-EC-MDValue, if the upper limit, reinforce band relative to precursor film
The result of softness is crossed relatively so that reinforce band becomes insufficient to the tightness of the part sealed by boundling of precursor film,
Therefore, the tendency that the sealing of the clamping section of the tubular package obtained is reduced.
As the manufacture method of this tubular package of the invention, for example, it can come using the following method, i.e., by precursor film
Tubular is shaped to, while filling filler, afterwards by way of ultrasonic sealing, boundling is carried out to the end of precursor film,
At the same time, add reinforcing and bring progress sealing sealing, thus the method to obtain tubular package.Moreover, as this
The device of the method for kind, for example, the auto-filling-packing machine that the trade name that the production of KUREHA companies can be used is KAP.Embodiment
Hereinafter, more specific description is carried out to the present invention according to embodiment and comparative example, but the present invention be not limited in
Lower embodiment.
(embodiment 1)
First, the monomer input mass ratio when the vinylidene chloride (VD) of 100 mass parts polymerize with vinyl chloride (VC)
(VD/VC) in 81/19 copolymer A, addition amounts to citroflex A-4 (ATBC), the decanedioic acid two of 9 mass parts
Butyl ester (DBS) and epoxidized vegetable oil, further addition amount to surfactant, lubricant and the mercerising polishing of 0.2 mass parts
Agent, obtains polyvinylidene chloride resinoid.Moreover, using a diameter of 90mm extruder screw, to obtained poly- inclined two
Vinyl chloride resin carries out melt extruded, and by the film obtained, draft temperature and stretching ratio according to table 1 carry out double
Axle is stretched, and after further the mitigation temperature and mitigation rate according to table 1 are relaxed, obtains precursor film.Determine
The thickness of the precursor film obtained, acetone extraction rate, the thorn energy at 120 DEG C, long side direction and short side direction at 100 DEG C
Percent thermal shrinkage, long side direction and short side direction stretching secant spring rate.Its result is as shown in table 1.
In addition, the monomer input mass ratio when the vinylidene chloride (VD) of 100 mass parts polymerize with vinyl chloride (VC)
(VD/VC) in 81/19 copolymer A, addition amounts to citroflex A-4 (ATBC), the decanedioic acid two of 8 mass parts
Butyl ester (DBS) and epoxidized vegetable oil, further addition amount to surfactant, lubricant and the mercerising polishing of 0.1 mass parts
Agent, obtains polyvinylidene chloride resinoid.Moreover, using a diameter of 90mm extruder screw, to obtained poly- inclined two
Vinyl chloride resin carries out melt extruded, and by the film obtained, draft temperature and stretching ratio according to table 1 carry out double
Axle is stretched, after further the mitigation temperature and mitigation rate according to table 1 are relaxed, and obtains reinforcing band film.Make
With the reinforcing band film obtained, the thermal contraction of the thickness for reinforcing band, the long side direction at 100 DEG C and short side direction is determined
The stretching secant spring rate of rate, long side direction and short side direction.Its result is as shown in table 1.
Then, using the precursor film and cut into the reinforcing band that width is 16mm that width is 82mm is cut into, it will fill
Thing is packed into the trade name of KUREHA companies production in the auto-filling-packing machine of KAP3000 types, to obtain tubular packaging
Body, above-mentioned filler is formed sediment by 50 mass % flesh of fish meat gruel, 28.6 mass % frozen water, 10 mass % vegetable oil, 8 mass % corns
Powder, 2 mass % soybean proteins, the paste of 1.4 mass % salt composition.That is, precursor film is shaped to tubular, filled simultaneously
Filler, and by way of ultrasonic is sealed, boundling is carried out to the end of precursor film, at the same time, reinforcing is added and brings
Melting sealing sealing is carried out, and obtains tubular package.In addition, in the precursor film of tubular, condition is adjusted into folding length
That is the length of circumference half is that 36mm, Cutting Length are that 225mm, quality are 75g, and above-mentioned Cutting Length refers to from tubular package
On choose filler, and the precursor film of remaining tubular is shakeout, the length then determined along long side direction.In addition, automatic
The operating condition of filling-packaging machine is as follows.
Filling speed：150/point.
Beckiron gap：0.1mm.
Seal pressure：450kPa.
Amplitude amount scale：69 (equivalent to 16 μm).
Sealing design：Flat 6.5mm seal widths.
Thickness before the distillation of weld portion of the precursor film with reinforcing band：80~160 μm.
Longitudinal closed condition：Processed goods provided with annular knurl line.
Boundling degree：Diameter 2mm.
Thin film cutter：The commercially available knife of olfa companies production.
(embodiment 2)
Monomer input mass ratio (VD/VC) when the vinylidene chloride (VD) of 100 mass parts polymerize with vinyl chloride (VC)
For in 81/19 copolymer A, addition amounts to citroflex A-4 (ATBC), the dibutyl sebacate of 8 mass parts
(DBS) and epoxidized vegetable oil, further addition amounts to surfactant, lubricant and mercerising the polishing agent of 0.4 mass parts, obtains
Obtained polyvinylidene chloride resinoid.Moreover, using a diameter of 90mm extruder screw, to the polyvinylidene chloride obtained
Resinoid carries out melt extruded, and by the film obtained, draft temperature and stretching ratio according to table 1 carry out twin shaft drawing
Stretch, after further the mitigation temperature and mitigation rate according to table 1 are relaxed, obtain precursor film.Determine and obtained
The thickness of precursor film, acetone extraction rate, the thorn energy at 120 DEG C, the heat of the long side direction at 100 DEG C and short side direction
Shrinkage factor, long side direction and short side direction stretching secant spring rate.Its result is as shown in table 1.
Then, except substituting the precursor film that is obtained in embodiment 1, and use beyond the precursor film, with reality
The identical method of example 1 is applied, tubular package is obtained.
(embodiment 3)
Monomer input mass ratio (VD/VC) when the vinylidene chloride (VD) of 100 mass parts polymerize with vinyl chloride (VC)
Monomer when polymerizeing for 81/19 copolymer A, and vinylidene chloride (VD) with vinyl chloride (VC) puts into mass ratio (VD/VC)
In 71/29 copolymer B mixture, wherein A/B (mass ratio)=75/25, addition amounts to the acetyl citrate of 6 mass parts
Tributyl (ATBC), dibutyl sebacate (DBS) and epoxidized vegetable oil, further addition amount to the surface work of 0.25 mass parts
Property agent, lubricant and mercerising polishing agent, obtain polyvinylidene chloride resinoid.Moreover, using a diameter of 90mm extruder
Screw rod, melt extruded, by the film obtained, the drawing according to table 1 are carried out to the polyvinylidene chloride resinoid obtained
Stretch temperature and stretching ratio progress is biaxial stretch-formed, after further the mitigation temperature and mitigation rate according to table 1 are relaxed,
Obtain precursor film.Determine the thickness of obtained precursor film, acetone extraction rate, the thorn energy at 120 DEG C, 100 DEG C
Under long side direction and the percent thermal shrinkage of short side direction, long side direction and short side direction stretching secant spring rate.Its result such as table 1
It is shown.
Then, except substituting the precursor film that is obtained in embodiment 1, and use beyond the precursor film, with reality
The identical method of example 1 is applied, tubular package is obtained.
(comparative example 1)
Monomer input mass ratio (VD/VC) when the vinylidene chloride (VD) of 100 mass parts polymerize with vinyl chloride (VC)
Monomer when polymerizeing for 80/20 copolymer C, and vinylidene chloride (VD) with vinyl chloride (VC) puts into mass ratio (VD/VC)
In 71/29 copolymer B mixture, wherein C/B (mass ratio)=75/25, addition amounts to the acetyl citrate of 8 mass parts
Tributyl (ATBC), dibutyl sebacate (DBS) and epoxidized vegetable oil, further addition amount to the surface work of 0.2 mass parts
Property agent, lubricant and mercerising polishing agent, obtain polyvinylidene chloride resinoid.Moreover, using a diameter of 90mm extruder
Screw rod, melt extruded, by the film obtained, the drawing according to table 1 are carried out to the polyvinylidene chloride resinoid obtained
Stretch temperature and stretching ratio progress is biaxial stretch-formed, after further the mitigation temperature and mitigation rate according to table 1 are relaxed,
Obtain precursor film.Determine the thickness of obtained precursor film, acetone extraction rate, the thorn energy at 120 DEG C, 100 DEG C
Under long side direction and the percent thermal shrinkage of short side direction, long side direction and short side direction stretching secant spring rate.Its result such as table 1
It is shown.
Then, except substituting the precursor film that is obtained in embodiment 1, and use beyond the precursor film, with reality
The identical method of example 1 is applied, tubular package is obtained.
(comparative example 2)
Monomer input mass ratio (VD/VC) when the vinylidene chloride (VD) of 100 mass parts polymerize with vinyl chloride (VC)
Monomer when polymerizeing for 81/19 copolymer A, and vinylidene chloride (VD) with vinyl chloride (VC) puts into mass ratio (VD/VC)
In 71/29 copolymer B mixture, wherein A/B (mass ratio)=85/15, addition amounts to the acetyl group lemon of 6.5 mass parts
Sour tributyl (ATBC), dibutyl sebacate (DBS) and epoxidized vegetable oil, further addition amount to the surface of 0.4 mass parts
Activating agent, lubricant and mercerising polishing agent, obtain polyvinylidene chloride resinoid.Moreover, using a diameter of 90mm extrusion
Machine screw rod, carries out melt extruded, by the film obtained, according to table 1 to the polyvinylidene chloride resinoid obtained
Draft temperature and stretching ratio progress are biaxial stretch-formed, and mitigation temperature and mitigation rate further according to table 1 carry out mitigation
Afterwards, precursor film is obtained.Determine the thickness of obtained precursor film, acetone extraction rate, the thorn energy at 120 DEG C, 100
Percent thermal shrinkage, long side direction and the short side direction stretching secant spring rate of long side direction and short side direction at DEG C.Its result is such as
Shown in table 1.
Then, except substituting the precursor film that is obtained in embodiment 1, and use beyond the precursor film, with reality
The identical method of example 1 is applied, tubular package is obtained.
(comparative example 3)
Monomer input mass ratio (VD/VC) when the vinylidene chloride (VD) of 100 mass parts polymerize with vinyl chloride (VC)
For in 82/18 copolymer D, addition amounts to citroflex A-4 (ATBC), the dibutyl sebacate of 6 mass parts
(DBS) and epoxidized vegetable oil, further addition amounts to surfactant, lubricant and mercerising the polishing agent of 0.4 mass parts, obtains
Obtained polyvinylidene chloride resinoid.Moreover, using a diameter of 90mm extruder screw, to the polyvinylidene chloride obtained
Resinoid carries out melt extruded, and by the film obtained, draft temperature and stretching ratio according to table 1 carry out twin shaft drawing
Stretch, after further the mitigation temperature and mitigation rate according to table 1 are relaxed, obtain precursor film.Determine and obtained
The thickness of precursor film, acetone extraction rate, the thorn energy at 120 DEG C, the heat of the long side direction at 100 DEG C and short side direction
Shrinkage factor, long side direction and short side direction stretching secant spring rate.Its result is as shown in table 1.
Then, except substituting the precursor film that is obtained in embodiment 1, and use beyond the precursor film, with reality
The identical method of example 1 is applied, tubular package is obtained.
<The assessment of tubular package sealing>
What the sealing to the tubular package obtained in embodiment and comparative example was carried out is evaluated as follows.That is,
Using heat accumulation ability of swimming retort sterilisation device (Ban manufacturing companies produce, trade name is Flavor Ace), in temperature 120
DEG C, setting pressure 2.5kg/cm2Under conditions of, the distillation processing of 15 minutes when being to tubular package, and made
For sample.Carrying out second day that distillation is handled, 100 samples are randomly being extracted, and these samples are immersed in
In 0.4 mass % No. 1 pigment solution of cyan, and under conditions of 5~10 DEG C of temperature, 5 days are stood.Afterwards, by sample from
Take out, after being washed to outer surface, film is sealed off, whether the filler inside investigation has coloring, passes through in pigment solution
This mode is assessed sealing.In addition, it may be found that because of pigment solution infiltration, and cause the filler of the inside to have coloring
Clamping section, i.e. welding reinforces the part of band, is determined as poor sealing clamping section, obtains 200 clamping sections of 100 samples
In poor sealing clamping section ratio (percentage), be used as the sealing disqualification rate of clamping section.Its result is as shown in table 1.
Table 1
It was found from the result shown in table 1, tubular package of the invention, i.e. embodiment 1~3, the folder of its tubular package
The sealing in tight portion is excellent.
Industrial utilizability
As described above, according to the present invention, the good tubular package of the sealing of clamping section can be obtained.
Therefore, the present invention institute tubular package, as with cheese, sausage, breaded fish stick, ham etc. process food for filler
Tubular package and it is useful.
Claims (7)
1. a kind of tubular package, possesses：(A) filler；(B) boundling sealing is carried out by the both ends to long side direction, made
Tubular precursor film that the filler is filled, being made up of polyvinylidene chloride based resin film；(C) welding is in the mother
On material film, thus wind and cover the precursor film by boundling seal it is part, thin by polyvinylidene chloride resinoid
The reinforcing band that film is constituted,
Characterized in that, the precursor film before boundling sealing, according to JIS:It is that method described in Z1709 is determined, 100
DEG C boiling water in immersion 3 minutes after, the percent thermal shrinkage R that short side direction is at 100 DEG CB-TDIn 10.0~18.9% scope
It is interior, the acetone extraction rate of 24 hours is extracted in 75 DEG C of acetone below 9.0%, the thorn energy at 120 DEG C 2.1mJ with
On,
The thorn energy is to install precursor film on 45mm reinforcing ring, to pierce speed at a temperature of 120 DEG C in internal diameter
50mm/ points willBe needled into precursor film, the value that the load from extensibility 0% to breakaway poing is integrated with displacement.
2. tubular package according to claim 1, it is characterised in that the short side of the precursor film before boundling sealing
Percent thermal shrinkage R of the direction at 100 DEG CB-TDWith the percent thermal shrinkage of the long side direction of the reinforcing band before welding at 100 DEG C
RC-MD, meet following formula (F1)：
- 8%≤RB-TD-RC-MD≤ 9% (F1)
Shown in condition.
3. tubular package according to claim 2, it is characterised in that the short side of the precursor film before boundling sealing
Percent thermal shrinkage R of the direction at 100 DEG CB-TDWith the percent thermal shrinkage of the long side direction of the reinforcing band before welding at 100 DEG C
RC-MD, meet following formula (F1a)：
4.5%≤RB-TD-RC-MD≤ 6.5% (F1a)
Shown in condition.
4. tubular package according to any one of claim 1 to 3, it is characterised in that the mother before boundling sealing
Thorn energy of the material film at 120 DEG C is more than 2.5mJ.
5. tubular package according to any one of claim 1 to 3, it is characterised in that the mother before boundling sealing
Material film, according to JIS:Stretching secant that method described in K7113 items 8.5 is determined under 23 DEG C, 50%RH, long side direction
Spring rate EB-MDIn the range of 332~450MPa.
6. tubular package according to any one of claim 1 to 3, it is characterised in that the precursor film, by containing
The polyvinylidene chloride based resin film of the copolymer of vinylidene and VCM is constituted.
7. tubular package according to any one of claim 1 to 3, it is characterised in that the reinforcing band, by containing inclined
The polyvinylidene chloride based resin film of the copolymer of dichloroethylene monomer and VCM is constituted.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-265137 | 2014-12-26 | ||
| JP2014265137A JP6334391B2 (en) | 2014-12-26 | 2014-12-26 | Cylindrical package |
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| Publication Number | Publication Date |
|---|---|
| CN105733138A CN105733138A (en) | 2016-07-06 |
| CN105733138B true CN105733138B (en) | 2017-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510931628.8A Active CN105733138B (en) | 2014-12-26 | 2015-12-15 | Tubular package |
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| CN (1) | CN105733138B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6920101B2 (en) * | 2017-05-15 | 2021-08-18 | 株式会社クレハ | Package with opening piece |
| CN111474076A (en) * | 2020-03-25 | 2020-07-31 | 山东省医疗器械产品质量检验中心 | Method for separating polyvinylidene chloride coating in medicinal composite material and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88100301A (en) * | 1987-01-29 | 1988-08-10 | 吴羽化学工业株式会社 | Reel like film package body and method for making thereof and equipment |
| CN88102500A (en) * | 1987-04-30 | 1988-11-16 | 吴羽化学工业株式会社 | The cylindrical packing body made with film and preparation method thereof and producing device |
| US6250468B1 (en) * | 1999-02-10 | 2001-06-26 | Teepak Investments, Inc. | Easy to remove overwrap |
| CN101778780A (en) * | 2007-08-20 | 2010-07-14 | 株式会社吴羽 | Tubular package |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6271647A (en) * | 1985-09-25 | 1987-04-02 | 大倉工業株式会社 | Film for packaging chilled beef |
| US4777095A (en) * | 1985-09-25 | 1988-10-11 | Okura Industrial Co., Ltd. | Chilled beef packaging film |
| EP2905310A4 (en) * | 2012-10-01 | 2016-02-24 | Kureha Corp | Vinylidene chloride-based copolymer resin composition and molded product thereof |
-
2014
- 2014-12-26 JP JP2014265137A patent/JP6334391B2/en active Active
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2015
- 2015-12-15 CN CN201510931628.8A patent/CN105733138B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88100301A (en) * | 1987-01-29 | 1988-08-10 | 吴羽化学工业株式会社 | Reel like film package body and method for making thereof and equipment |
| CN88102500A (en) * | 1987-04-30 | 1988-11-16 | 吴羽化学工业株式会社 | The cylindrical packing body made with film and preparation method thereof and producing device |
| US6250468B1 (en) * | 1999-02-10 | 2001-06-26 | Teepak Investments, Inc. | Easy to remove overwrap |
| CN101778780A (en) * | 2007-08-20 | 2010-07-14 | 株式会社吴羽 | Tubular package |
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| Publication number | Publication date |
|---|---|
| CN105733138A (en) | 2016-07-06 |
| JP6334391B2 (en) | 2018-05-30 |
| JP2016124567A (en) | 2016-07-11 |
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