CN109228584A - Joint strip and its production technology in EVOH high-barrier - Google Patents
Joint strip and its production technology in EVOH high-barrier Download PDFInfo
- Publication number
- CN109228584A CN109228584A CN201810219973.2A CN201810219973A CN109228584A CN 109228584 A CN109228584 A CN 109228584A CN 201810219973 A CN201810219973 A CN 201810219973A CN 109228584 A CN109228584 A CN 109228584A
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- CN
- China
- Prior art keywords
- layers
- evoh
- mpe
- layer
- tie
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7244—Oxygen barrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to Food Packaging technology field more particularly to a kind of interior joint strips.Joint strip in EVOH high-barrier, including lamination layer structure, lamination layer structure are from top to bottom followed successively by MPE layers, TIE layers, evoh layer, TIE layers, MPE layers.Due to the adoption of the above technical scheme, the present invention is applied in the interior envelope of packaging opening portion, using simple five-layer structure, while simplifying technique, ensure that the resistance oxygen of packaging opening portion blocks water.
Description
Technical field
The present invention relates to Food Packaging technology field more particularly to a kind of interior joint strips.
Background technique
With the increasingly promotion of domestic level, the continuous development of domestic paper molten aluminum body aseptic packaging, to liquid packet
The seal request of dress opening portion also increases accordingly.
CN201510020215.4 discloses band in one kind, manufactures the method for interior band and the packing container using interior band, should
The outer layer that interior band is prepared by low density polyethylene (LDPE) and linear low density polyethylene blend；By low density polyethylene (LDPE) and linear low close
Spend the middle layer of polyethylene blend preparation；Adhesive phase；Ethylene-vinyl alcohol copolymer barrier layer；Another adhesive phase；By low
Another middle layer of density polyethylene and the preparation of linear low density polyethylene blend；And by low density polyethylene (LDPE) and linear low
Another outer layer of polyamide blend preparation, these layers are laminated in the order described above.Each tunic cohesive force is equal in order to obtain
Weighing apparatus uses seven-layer structure, and each lamination layer structure contains mixture preparation again, and preparation process is complicated, and material cost is high.
Summary of the invention
The object of the present invention is to provide joint strips in a kind of EVOH high-barrier, to solve the above technical problems.
Another object of the present invention is to provide a kind of production technologies of joint strip in EVOH high-barrier, to solve above-mentioned skill
Art problem.
Technical problem solved by the invention can be realized using following technical scheme:
Joint strip in EVOH high-barrier, including a lamination layer structure, the lamination layer structure be from top to bottom followed successively by MPE layers,
TIE layers, evoh layer, TIE layers, MPE layers.
MPE described in upper layer and lower layer layers is all made of MLLDPE (metallocene catalysis linear low density of polyethylene, abbreviation MPE) material
It is made.Outermost layer of the present invention uses MPE layers, the outer layer phase prepared with low density polyethylene (LDPE) and linear low density polyethylene blend
Than due to the characteristic of MPE low-temperature heat-sealing and wider heat-sealing temperature range, there is low envelope temperature and wide heat-sealing temperature area
Between the advantages of.It is applied in the interior envelope of packaging opening portion due to the present invention, in practical application, outside of the invention also seals aluminium
Foil composite layer, therefore use above-mentioned five-layer structure, it is sufficient to it ensure that the resistance oxygen resistance effect of packaging opening portion.In addition, due to this
The application characteristic of invention, since outermost layer of the present invention is MPE layers, can substantially reduce heat-sealing when it is sealed with aluminium foil composite layer
Temperature saves the reliability when sealing of subsequent packages opening portion.The present invention uses above-mentioned five-layer structure, and overall structure is simpler
It is single, there is more economical and preferably easy making property.
The weight percent of each layer is as follows in the lamination layer structure:
MPE layers 35%/TIE layers 10%/EVOH layers 10%/TIE layers of 10%/MPE layer 35%.
The lamination layer structure integral thickness control is at 50 μm -80 μm, and preferably 60 μm.
MPE described in upper layer and lower layer layers of thickness control is at 20 μm -30 μm, and preferably 25 μm.
Two layers of TIE layers of thickness control is at 2 μm -5 μm, and preferably 2 μm.
The thickness control of the evoh layer is at 6 μm -10 μm, and preferably 6 μm.Above-mentioned thickness selection, meets prior art condition
Under, obtain thinner more preferably interior joint strip application.
Described TIE layers preferably using the adhesive layer of the 41E687 trade mark of Du Pont.Using this adhesive layer for bond MPE layer with
Evoh layer is applied in the present invention, the adhesion strength with superelevation.
The production technology of joint strip, includes the following steps: in EVOH high-barrier
1) MPE resin, TIE resin and EVOH resin are separately added into difference extruder；
2) extruder temperature is set as 120 degree of -220 degree, and extrusion die temperature is 210 degree；
3) according to the speed parameter of extrusion output ratio setting extruder；
4) blown film；
5) it winds, obtains final lamination layer structure.
In step 1), following weight percent is used when MPE resin, TIE resin and EVOH resin are added:
MPE layers 35%/TIE layers 10%/EVOH layers 10%/TIE layers of 10%/MPE layer 35%.
The present invention uses above-mentioned design, according to the speed parameter of extruder, extrusion output is adjusted, to obtain ideal weight percentage
Each layer of ratio, finally obtained lamination layer structure ensure that the resistance oxygen of packaging opening portion blocks water work while simplifying technique
With.
The utility model has the advantages that due to the adoption of the above technical scheme, the present invention is applied in the interior envelope of packaging opening portion, using simple
Five-layer structure, simplify technique while, ensure that packaging opening portion resistance oxygen block water.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of lamination layer structure of the present invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating that the present invention is further explained.
Referring to Fig.1, joint strip in EVOH high-barrier, including lamination layer structure, lamination layer structure are from top to bottom followed successively by MPE layers
1, TIE layer 2, evoh layer 3, TIE layer 4, MPE layer 5.
MPE layer 1, MPE layer 5 are all made of MLLDPE (metallocene catalysis linear low density of polyethylene, abbreviation MPE) material system
At.Outermost layer of the present invention uses MPE layer 1, MPE layer 5, prepares with low density polyethylene (LDPE) and linear low density polyethylene blend
Outer layer is compared, and due to the characteristic of MPE low-temperature heat-sealing and wider heat-sealing temperature range, has low envelope temperature and wide heat-sealing
The advantages of temperature range.It is applied in the interior envelope of packaging opening portion due to the present invention, in practical application, outside of the invention is also
Heat-sealed aluminium foils composite layer, therefore use above-mentioned five-layer structure, it is sufficient to it ensure that the resistance oxygen resistance effect of packaging opening portion.In addition,
Due to application characteristic of the invention, when it is sealed with aluminium foil composite layer, since outermost layer of the present invention is MPE layer 1, can drop significantly
Low heat-sealing temperature saves the reliability when sealing of subsequent packages opening portion.The present invention uses above-mentioned five-layer structure, and overall structure is more
Add simple, there is more economical and preferably easy making property.
The weight percent of each layer is as follows in lamination layer structure: MPE layers of 35%/TIE layers of 3 10%/TIE of 10%/EVOH layer
2 10%/MPE layer 35% of layer.
Lamination layer structure integral thickness is controlled at 50 μm -80 μm, and preferably 60 μm.MPE layer 1, MPE layer 5 thickness control
At 20 μm -30 μm, preferably 25 μm.TIE layer 2, TIE layer 4 thickness control at 2 μm -5 μm, preferably 2 μm.The thickness of evoh layer 3
Control is at 6 μm -10 μm, and preferably 6 μm.Above-mentioned thickness selection under the conditions of meeting prior art, obtains thinner more preferably interior joint strip and answers
With.
TIE layer 2 is preferably using the adhesive layer of the 41E687 trade mark of Du Pont.Using this adhesive layer for bonding MPE and EVOH,
Applied in the present invention, there is the adhesion strength of superelevation.
The production technology of joint strip in EVOH high-barrier includes the following steps: MPE resin, TIE resin and EVOH resin point
It Jia Ru not difference extruder；Extruder temperature is set as 120 degree of -220 degree, and extrusion die temperature is 210 degree；According to extrusion output
The speed parameter of ratio setting extruder；Blown film；Winding, obtains final lamination layer structure.
Using following weight percent when MPE resin, TIE resin and EVOH resin are added: MPE layers 35%/TIE layers
10%/EVOH layers of 10%/TIE layers of 10%/MPE layer 35%.
Embodiment one:
MPE resin, TIE resin and EVOH resin are separately added into difference extruder；Weight percent is as follows when addition:
MPE layers of 35%/TIE layers of 3 10%/TIE layer of 10%/EVOH layer, 2 10%/MPE layer 35%.Extruder temperature is set as 120 degree,
Extrusion die temperature is 210 degree；According to the speed parameter of extrusion output ratio setting extruder；Blown film；Winding, obtains final answer
Sheet combination structure.
Obtained lamination layer structure integral thickness is 50 μm, each thickness degree are as follows: 2 μm/evoh layer of MPE layer 20 μm/TIE layer, 6 μ
20 μm of layer of 2 μm/MPE of m/TIE layer.
Embodiment two:
MPE resin, TIE resin and EVOH resin are separately added into difference extruder；Weight percent is as follows when addition:
MPE layers of 35%/TIE layers of 3 10%/TIE layer of 10%/EVOH layer, 2 10%/MPE layer 35%.Extruder temperature is set as 220 degree,
Extrusion die temperature is 210 degree；According to the speed parameter of extrusion output ratio setting extruder；Blown film；Winding, obtains final answer
Sheet combination structure.
Obtained lamination layer structure integral thickness is 80 μm, each thickness degree are as follows: 5 μm/evoh layer of MPE layer 30 μm/TIE layer 10
μm/30 μm of layer of 5 μm/MPE of TIE layer.
Embodiment three:
MPE resin, TIE resin and EVOH resin are separately added into difference extruder；Weight percent is as follows when addition:
MPE layers of 35%/TIE layers of 3 10%/TIE layer of 10%/EVOH layer, 2 10%/MPE layer 35%.Extruder temperature is set as 170 degree,
Extrusion die temperature is 210 degree；According to the speed parameter of extrusion output ratio setting extruder；Blown film；Winding, obtains final answer
Sheet combination structure.
Obtained lamination layer structure integral thickness is 60 μm, each thickness degree are as follows: 2 μm/evoh layer of MPE layer 25 μm/TIE layer, 6 μ
25 μm of layer of 2 μm/MPE of m/TIE layer.
By lamination layer structure made of the present invention, in the interior envelope for packing opening portion, it is sealed in the interior of packaging opening
Surface, when specifically used, the outer surface for packing opening is sealed with the compound tie rod of aluminium foil, the compound tie rod of aluminium foil with it is of the invention compound
Layer structure seals compound in opening portion.The compound tie rod of aluminium foil is pulled open, removing situation of the invention is observed.When the present invention is cut rapidly
Disconnected, the present invention will not extend in the edge environ of opening portion inner surface, and the fibre that a part leaves also is not present in the present invention
Dimension or fritter, it is believed that test passes.Otherwise, if the present invention extends about in opening portion inner surface edge part and leaves part fibre
Peacekeeping fritter, it is believed that test failure.
The present invention made of above-mentioned 3 embodiments, respectively takes 100 samples, is tested, and test result is as follows shown in table 1:
| Sample | Embodiment one | Embodiment two | Embodiment three |
| It is qualified | 88 | 91 | 99 |
| It is unqualified | 12 | 9 | 1 |
Table 1
As it can be seen that the lamination layer structure obtained using the present invention, in the interior envelope of packaging opening portion, five-layer structure is simpler
It is single, there is more economical and preferably easy making property.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
- Joint strip in 1.EVOH high-barrier, including a lamination layer structure, which is characterized in that the lamination layer structure is from top to bottom successively For MPE layers, TIE layers, evoh layer, TIE layers, MPE layers.
- 2. joint strip in EVOH high-barrier according to claim 1, which is characterized in that the weight of each layer in the lamination layer structure It is as follows to measure percentage:MPE layers 35%/TIE layers 10%/EVOH layers 10%/TIE layers of 10%/MPE layer 35%.
- 3. joint strip in EVOH high-barrier according to claim 1, which is characterized in that the lamination layer structure integral thickness control System is at 50 μm -80 μm.
- 4. joint strip in EVOH high-barrier according to claim 1 or 3, which is characterized in that MPE described in upper layer and lower layer layers of thickness Degree control is at 20 μm -30 μm.
- 5. joint strip in EVOH high-barrier according to claim 1 or 3, which is characterized in that two layers of described TIE layers of thickness control System is at 2 μm -5 μm.
- 6. joint strip in EVOH high-barrier according to claim 1 or 3, which is characterized in that the thickness control of the evoh layer At 6 μm -10 μm.
- 7. joint strip in EVOH high-barrier according to claim 1, which is characterized in that described TIE layers using Du Pont The adhesive layer of the 41E687 trade mark.
- 8. the production technology of joint strip in EVOH high-barrier described in any one of manufacturing claims 1 to 7, which is characterized in that Include the following steps:1) MPE resin, TIE resin and EVOH resin are separately added into difference extruder；2) extruder temperature is set as 120 degree of -220 degree, and extrusion die temperature is 210 degree；3) according to the speed parameter of extrusion output ratio setting extruder；4) blown film；5) it winds, obtains final lamination layer structure.
- 9. the production technology of joint strip in EVOH high-barrier according to claim 8, which is characterized in that in step 1), MPE tree Following weight percent is used when rouge, TIE resin and EVOH resin are added:MPE layers 35%/TIE layers 10%/EVOH layers 10%/TIE layers of 10%/MPE layer 35%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219973.2A CN109228584A (en) | 2018-03-16 | 2018-03-16 | Joint strip and its production technology in EVOH high-barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219973.2A CN109228584A (en) | 2018-03-16 | 2018-03-16 | Joint strip and its production technology in EVOH high-barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109228584A true CN109228584A (en) | 2019-01-18 |
Family
ID=65084081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810219973.2A Pending CN109228584A (en) | 2018-03-16 | 2018-03-16 | Joint strip and its production technology in EVOH high-barrier |
Country Status (1)
| Country | Link |
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| CN (1) | CN109228584A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693420A (en) * | 2009-10-16 | 2010-04-14 | 江阴升辉包装材料有限公司 | Coextruded film with improved performance and preparation method thereof |
| CN102501511A (en) * | 2011-11-18 | 2012-06-20 | 佛山佛塑科技集团股份有限公司 | Barrier heat sealing type biaxial tensile composite thin film and preparation method thereof |
| CN104589749A (en) * | 2014-12-24 | 2015-05-06 | 广东德冠薄膜新材料股份有限公司 | High-barrier bi-directionally stretched polythene film and preparation method thereof |
-
2018
- 2018-03-16 CN CN201810219973.2A patent/CN109228584A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693420A (en) * | 2009-10-16 | 2010-04-14 | 江阴升辉包装材料有限公司 | Coextruded film with improved performance and preparation method thereof |
| CN102501511A (en) * | 2011-11-18 | 2012-06-20 | 佛山佛塑科技集团股份有限公司 | Barrier heat sealing type biaxial tensile composite thin film and preparation method thereof |
| CN104589749A (en) * | 2014-12-24 | 2015-05-06 | 广东德冠薄膜新材料股份有限公司 | High-barrier bi-directionally stretched polythene film and preparation method thereof |
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Application publication date: 20190118 |
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