CN108099329A - Moisture film - Google Patents

Moisture film Download PDF

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Publication number
CN108099329A
CN108099329A CN201711460243.3A CN201711460243A CN108099329A CN 108099329 A CN108099329 A CN 108099329A CN 201711460243 A CN201711460243 A CN 201711460243A CN 108099329 A CN108099329 A CN 108099329A
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CN
China
Prior art keywords
layers
density
moisture film
layer
evoh
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
Application number
CN201711460243.3A
Other languages
Chinese (zh)
Inventor
陈康
爨康翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Luoyang Jin Yu Xin Mstar Technology Ltd
Original Assignee
Luoyang Jin Yu Xin Mstar Technology Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Luoyang Jin Yu Xin Mstar Technology Ltd filed Critical Luoyang Jin Yu Xin Mstar Technology Ltd
Priority to CN201711460243.3A priority Critical patent/CN108099329A/en
Publication of CN108099329A publication Critical patent/CN108099329A/en
Pending legal-status Critical Current

Links

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
    • B32B27/32—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
    • 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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • 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
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a kind of moisture film, including set gradually the first PE layers, the 2nd PE layers, the 3rd PE layers, adhesive layer, PA layers, evoh layer, PA layers, adhesive layer, the 4th PE layers, the 5th PE layers and the 6th PE layers.Moisture film in the application is fine to barriering effects such as oxygen gas and water, carbon dioxide, smells, the transit dose of vapor can down to 0.5g/ ㎡ * for 24 hours, oxygen transit dose can be down to 1.6cm3/cm2.24h0.1mpa；Elongation at break can reach more than 420%, and the elongation at break of similar product is usually no more than 200%, and minority can reach more than 200%, so the tensile property of the moisture film in the application is far above similar product.

Description

Moisture film
Technical field
The present invention relates to a kind of co-extrusion films, and in particular to moisture film.
Background technology
Co-extrusion film has most of feature of composite membrane, but has and a little distinguish, i.e. all layers of co-extrusion film are all same Time extrusion molding simultaneously, therefore other non-plastic materials such as aluminium foil, paper are not had.The combining form of its product material is opposite Less, the scope of application is also smaller, but due to being to be combined by hot melt without binder between layers, food packaging is total to The wholesomeness of extruded film wants that relatively reliable and tensile property is good, surface brightness is good, meets the multinomial mark of coating glue film, food-film Standard, but in the case where some are higher to the requirement of film barrier properties for gases, some existing co-extrusion films are difficult to meet the requirements.
The content of the invention
It is an object of the invention to provide a kind of moisture films, solve the problems, such as that some existing co-extrusion film barrier properties are poor.
To solve the technical issues of above-mentioned, the present invention uses following technical scheme：
A kind of moisture film, including set gradually the first PE layers, the 2nd PE layers, the 3rd PE layers, adhesive layer, PA layers, evoh layer, PA Layer, adhesive layer, the 4th PE layers, the 5th PE layers and the 6th PE layers.
As preference, including PA 20-30wt% and EVOH 5-6wt%.
As preference, the described first PE layers of density are 0.89-0.92 g/cm3, the 2nd PE layers of density be 1.14- 1.18g/cm3, the 3rd PE layers of density be 0.88-0.91g/cm3, the 4th PE layers of density be 0.89-0.94 g/cm3, the 5th PE layers Density is 0.90-0.95 g/cm3, the 6th PE layers of density be 0.89-0.92 g/cm3。
As preference, evoh layer density is 1.17-1.21g/cm3, PA layers of density be 0.88-0.92g/cm3。
As preference, the described first PE layers, the 2nd PE layers, the 3rd PE layers, PA layers, evoh layer, PA layers, the 4th PE layers, 5th PE layers and the 6th PE layers of thickness is followed successively by 10-12 μm, 18-22 μm, 5-10 μm, 5-8 μm, 5-8 μm, 5-8 μm, 10-12 μ M, 10-12 μm and 5-8 μm.
As preference, being 11 layers of co-extrusion film, density is 0.95-0.975 g/cm3。
As preference, during processing, every layer of corresponding raw material is chosen respectively after melting from respective cross-head Squeeze out, wherein, the first PE layers, the 2nd PE layers, the 3rd PE layers, PA layers, evoh layer, PA layers, the 4th PE layers, the 5th PE layers and the 6th The extrusion temperature of PE layers of corresponding raw material is respectively 170-250 DEG C, 220-250 DEG C, 170-240 DEG C, 220-250 DEG C, 170-240 DEG C, 170-220 DEG C, 170-240 DEG C, 170-240 DEG C and 170-240 DEG C.
As preference, the described first PE layers, the 2nd PE layers, the 3rd PE layers, the 4th PE layers, the 5th PE layers and the 6th PE layers Include the PPA that mass fraction is 0.5-1%.
Moisture film in the application is after choosing the empty raw material of respective layer, respectively from respective extruder machine after melting Head squeezes out, and is finally converted to eleventh floor co-extrusion film, is wound through traction roller group traction, obtains finished product.
PE layers in the application include density different the first PE layers, the 2nd PE layers, the 3rd PE layers, the 4th PE layers, the 5th It PE layers and the 6th PE layer, will be respectively since its properties of the different PE of density such as intensity, toughness, hardness etc. are variant The PE of kind density is used in conjunction with each other, and is learnt from other's strong points to offset one's weaknesses, is improved the performance of moisture film.
There is hydrophily and hygroscopicity since there is hydroxyls, EVOH resins in the molecular structure of EVOH resins.Work as suction After attached moisture, the barrier property of gas can be affected, therefore organize PA layers in evoh layer both sides society, and PA layers are played evoh layer Support and the effect of protection, since polarity spectrum is larger between PA layers and PE layers, so adhesion therebetween is bad, if not It is easily come off using adhesive, so setting adhesive layer between PA layers and PE layers, adhesive layer can be resin binder, thick Degree can need to set according to those skilled in the art.
Compared with prior art, the beneficial effects of the invention are as follows：
Moisture film in the application is fine to barriering effects such as oxygen gas and water, carbon dioxide, smells, and the transit dose of vapor can be low To 0.5g/ ㎡ * for 24 hours, oxygen transit dose can be down to 1.6cm3/cm2.24h0.1mpa.
The elongation at break of moisture film in the application can reach more than 420%, and the elongation at break of similar product is generally not More than 200%, minority can reach more than 200%, so the tensile property of the moisture film in the application is far above similar product.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
Embodiment 1：
Present embodiments provide a kind of moisture film, including set gradually the first PE layers, the 2nd PE layers, the 3rd PE layers, adhesive layer, PA Layer, evoh layer, PA layers, adhesive layer, the 4th PE layers, the 5th PE layers and the 6th PE layers, including PPA0.5-1wt%；Described One PE layers of density is 0.89 g/cm3, the 2nd PE layers of density be 1.14g/cm3, the 3rd PE layers of density be 0.91g/cm3, the 4th PE Layer density is 0.94 g/cm3, the 5th PE layers of density be 0.95 g/cm3, the 6th PE layers of density be 0.92 g/cm3, evoh layer it is close It spends for 1.17g/cm3, PA layers of density be 0.88g/cm3；Described first PE layers, the 2nd PE layers, the 3rd PE layers, PA layers, evoh layer, PA layers, the 4th PE layers, the 5th PE layers and the 6th PE layers of thickness be followed successively by 10 μm, 18 μm, 10 μm, 8 μm, 8 μm, 8 μm, 12 μm, 12 μm and 8 μm；During processing, choose every layer of corresponding raw material and squeezed out respectively after melting from respective cross-head, wherein, First PE layers, the 2nd PE layers, the 3rd PE layers, PA layers, evoh layer, PA layers, the 4th PE layers, the 5th PE layers and the 6th PE layers institute it is right The extrusion temperature for the raw material answered is respectively 170-250 DEG C, 220-250 DEG C, 170-240 DEG C, 220-250 DEG C, 170-240 DEG C, 170-220 DEG C, 170-240 DEG C, 170-240 DEG C and 170-240 DEG C.Embodiment 1：
Present embodiments provide a kind of moisture film, including set gradually the first PE layers, the 2nd PE layers, the 3rd PE layers, adhesive layer, PA Layer, evoh layer, PA layers, adhesive layer, the 4th PE layers, the 5th PE layers and the 6th PE layers, PPA1wt%；Described first PE layers of density are 0.92 g/cm3, the 2nd PE layers of density be 1.18g/cm3, the 3rd PE layers of density be 0.88g/cm3, the 4th PE layers of density be 0.89 g/cm3, the 5th PE layers of density be 0.90g/cm3, the 6th PE layers of density be 0.8g/cm3, evoh layer density be 1.21g/cm3、PA Layer density is 0.92g/cm3；Described first PE layers, the 2nd PE layers, the 3rd PE layers, PA layers, evoh layer, PA layers, the 4th PE layers, Five PE layers and the 6th PE layers of thickness are followed successively by 12 μm, 22 μm, 5 μm, 5 μm, 5 μm, 5 μm, 10 μm, 10 μm and 5 μm；During processing, Every layer of corresponding raw material is chosen to squeeze out from respective cross-head after melting respectively, wherein, the first PE layers, the 2nd PE Layer, the 3rd PE layers, PA layers, evoh layer, PA layers, the 4th PE layers, the 5th PE layers and the 6th PE layers corresponding raw material extrusion Temperature is respectively 170-250 DEG C, 220-250 DEG C, 170-240 DEG C, 220-250 DEG C, 170-240 DEG C, 170-220 DEG C, 170-240 DEG C, 170-240 DEG C and 170-240 DEG C.Embodiment 1：
Present embodiments provide a kind of moisture film, including set gradually the first PE layers, the 2nd PE layers, the 3rd PE layers, adhesive layer, PA Layer, evoh layer, PA layers, adhesive layer, the 4th PE layers, the 5th PE layers and the 6th PE layers, including PPA0.75wt%；Described first PE layers of density are 0.90 g/cm3, the 2nd PE layers of density be 1.16g/cm3, the 3rd PE layers of density be 0.90g/cm3, the 4th PE layers Density is 0.92 g/cm3, the 5th PE layers of density be 0.91g/cm3, the 6th PE layers of density be 0.90 g/cm3, evoh layer density be 1.19g/cm3, PA layers of density be 0.90g/cm3；Described first PE layers, the 2nd PE layers, the 3rd PE layers, PA layers, evoh layer, PA layers, 4th PE layers, the 5th PE layers and the 6th PE layers of thickness be followed successively by 11 μm, 20 μm, 8 μm, 6 μm, 6 μm, 6 μm, 11 μm, 11 μm and 6 μm；During processing, choose every layer of corresponding raw material and squeezed out respectively after melting from respective cross-head, wherein, the first PE Layer, the 2nd PE layers, the 3rd PE layers, PA layers, evoh layer, PA layers, the 4th PE layers, the 5th PE layers and the 6th PE layers of corresponding original The extrusion temperature of material is respectively 170-250 DEG C, 220-250 DEG C, 170-240 DEG C, 220-250 DEG C, 170-240 DEG C, 170-220 DEG C, 170-240 DEG C, 170-240 DEG C and 170-240 DEG C.
The properties of above-mentioned three kinds of moisture films are detected according to GB/T28117-2011, wherein obtained by embodiment 3 Moisture film is superior to embodiment 1 and embodiment 2 no matter on elongation at break or barrier property to vapor and oxygen, The transit dose of vapor can down to 0.5g/ ㎡ * for 24 hours, oxygen transit dose can down to 1.6cm3/cm2.24h0.1mpa, fracture Elongation can reach more than 420%, as follows to the testing result of the properties of the moisture film of 3 gained of embodiment：
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that ability Field technique personnel can be designed that a lot of other modifications and embodiment, these modifications and embodiment will fall in the application public affairs Within the spirit and spirit opened.It more specifically, can be to theme group in the range of disclosure and claim The building block and/or layout for closing layout carry out a variety of variations and modifications.Except the deformation carried out to building block and/or layout Outer with improving, to those skilled in the art, other purposes also will be apparent.

Claims (8)

1. a kind of moisture film, it is characterised in that：Including set gradually the first PE layers, the 2nd PE layers, the 3rd PE layers, adhesive layer, PA Layer, evoh layer, PA layers, adhesive layer, the 4th PE layers, the 5th PE layers and the 6th PE layers.
2. moisture film according to claim 1, which is characterized in that including PA 20-30wt% and EVOH 5-6wt%.
3. moisture film according to claim 1, which is characterized in that the described first PE layers of density are 0.89-0.92 g/cm3, Two PE layers of density is 1.14-1.18g/cm3, the 3rd PE layers of density be 0.88-0.91g/cm3, the 4th PE layers of density be 0.89- 0.94 g/cm3, the 5th PE layers of density be 0.90-0.95 g/cm3, the 6th PE layers of density be 0.89-0.92 g/cm3。
4. moisture film according to claim 1, which is characterized in that evoh layer density is 1.17-1.21g/cm3, PA layers of density be 0.88-0.92g/cm3。
5. moisture film according to claim 1, which is characterized in that the described first PE layers, the 2nd PE layers, the 3rd PE layers, PA layers, Evoh layer, PA layers, the 4th PE layers, the 5th PE layers and the 6th PE layers of thickness be followed successively by 10-12 μm, 18-22 μm, 5-10 μm, 5-8 μm, 5-8 μm, 5-8 μm, 10-12 μm, 10-12 μm and 5-8 μm.
6. moisture film according to claim 1, which is characterized in that for 11 layers of co-extrusion film, density is 0.95-0.975 g/cm3。
7. moisture film according to claim 1, which is characterized in that during processing, choose every layer of corresponding raw material respectively through superfusion Squeezed out after melting from respective cross-head, wherein, the first PE layers, the 2nd PE layers, the 3rd PE layers, PA layers, evoh layer, PA layers, 4th PE layers, the 5th PE layers and the 6th PE layers corresponding raw material extrusion temperature be respectively 170-250 DEG C, 220-250 DEG C, 170-240 DEG C, 220-250 DEG C, 170-240 DEG C, 170-220 DEG C, 170-240 DEG C, 170-240 DEG C and 170-240 DEG C.
8. moisture film according to claim 1, which is characterized in that the described first PE layers, the 2nd PE layers, the 3rd PE layers, the 4th PE layers, the 5th PE layers and the 6th PE layers include mass fraction be 0.5-1% PPA.
CN201711460243.3A 2017-12-28 2017-12-28 Moisture film Pending CN108099329A (en)

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Application Number Priority Date Filing Date Title
CN201711460243.3A CN108099329A (en) 2017-12-28 2017-12-28 Moisture film

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Application Number Priority Date Filing Date Title
CN201711460243.3A CN108099329A (en) 2017-12-28 2017-12-28 Moisture film

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201573373U (en) * 2009-11-10 2010-09-08 江阴升辉包装材料有限公司 Full-plastic multi-layer co-extrusion sheet
CN102555379A (en) * 2011-12-16 2012-07-11 江阴升辉包装材料有限公司 Highly obstructed multilayer coextrusion thermal shrink film
CN102700210A (en) * 2012-06-12 2012-10-03 黄山永新股份有限公司 Seven-layer co-extrusion transparent high-isolation film and preparation method thereof
CN106113834A (en) * 2016-06-28 2016-11-16 朝阳佛瑞达科技有限公司 A kind of coiling-resistant high-barrier casting films and production method thereof
CN106739329A (en) * 2016-11-16 2017-05-31 东莞市博晨塑料科技有限公司 A kind of novel multi-layer co-extrusion graining film and preparation method thereof
CN106739340A (en) * 2017-01-23 2017-05-31 嘉兴市明跃包装材料有限公司 A kind of packaging film do not rolled up after high-barrier high temperature resistant sterilizing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201573373U (en) * 2009-11-10 2010-09-08 江阴升辉包装材料有限公司 Full-plastic multi-layer co-extrusion sheet
CN102555379A (en) * 2011-12-16 2012-07-11 江阴升辉包装材料有限公司 Highly obstructed multilayer coextrusion thermal shrink film
CN102700210A (en) * 2012-06-12 2012-10-03 黄山永新股份有限公司 Seven-layer co-extrusion transparent high-isolation film and preparation method thereof
CN106113834A (en) * 2016-06-28 2016-11-16 朝阳佛瑞达科技有限公司 A kind of coiling-resistant high-barrier casting films and production method thereof
CN106739329A (en) * 2016-11-16 2017-05-31 东莞市博晨塑料科技有限公司 A kind of novel multi-layer co-extrusion graining film and preparation method thereof
CN106739340A (en) * 2017-01-23 2017-05-31 嘉兴市明跃包装材料有限公司 A kind of packaging film do not rolled up after high-barrier high temperature resistant sterilizing

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Application publication date: 20180601