CN208585555U - Bilayer resistance oxygen is protected from light packaging bag - Google Patents
Bilayer resistance oxygen is protected from light packaging bag Download PDFInfo
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- CN208585555U CN208585555U CN201821376041.0U CN201821376041U CN208585555U CN 208585555 U CN208585555 U CN 208585555U CN 201821376041 U CN201821376041 U CN 201821376041U CN 208585555 U CN208585555 U CN 208585555U
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Abstract
Bilayer resistance oxygen is protected from light packaging bag.Existing packaging bag all uses the form of single layer PE or composite construction, and such packaging bag is not protected from light, and the substance not being protected from light in packaging bag is apt to deteriorate, and oxygen resistance is poor, reduces shelf life of products.The utility model includes: PE layers of double-layer coextrusion (1) and PE layers of co-extrusion (7), metal layer (5) and PVA coating layer (2) are respectively set between PE layers of double-layer coextrusion (1) and PE layers of co-extrusion (7), it is accompanied evoh layer (6) between the double-deck PE film (7), PE layers of co-extrusion are formed by LLDPE, LDPE, EVA and metallocene blending extrusion.The double-deck resistance oxygen that the utility model is suitable for packaging bag is protected from light.
Description
Technical field
The utility model relates to a kind of packaging bags, and in particular to a kind of double-deck resistance oxygen is protected from light packaging bag.
Background technique
Existing packaging bag all uses the form of single layer PE or composite construction, and such packaging bag is not protected from light, is not protected from light
Substance in packaging bag is apt to deteriorate, and oxygen resistance is poor, reduces shelf life of products.
Summary of the invention
The utility model is not protected from light to solve existing packaging bag, the high problem of oxygen permeating amount, provides and a kind of be protected from light, hinder oxygen
Resistance oxygen is protected from light packaging bag.
Above-mentioned purpose is realized by following scheme:
A kind of double-deck resistance oxygen is protected from light packaging bag, and composition includes: the double-deck PE film (7) and PE layers of co-extrusion (1), the double-deck PE film
(7) metal layer (5) and PVA coating layer (2) are respectively set between PE layers of co-extrusion (1), accompanies evoh layer between the double-deck PE film (7)
(6), co-extrusion PE layers are formed by LLDPE, LDPE, EVA and metallocene blending extrusion.
The double-deck resistance oxygen is protected from light packaging bag, and metal layer (5) is vacuum aluminum-coated or vacuum copper facing.
The described double-deck resistance oxygen is protected from light packaging bag, metal layer (5) with a thickness of 0.01-0.1um.
The described double-deck resistance oxygen is protected from light packaging bag, PVA coating layer (2) with a thickness of 0.1-100 μm.
The described double-deck resistance oxygen is protected from light packaging bag, evoh layer (6) with a thickness of 0.1-100 μm.
Beneficial effect
1. the utility model is combined using setting PVA coating layer and evoh layer, the effect of resistance oxygen, oxygen flow can achieve
Amount is often up to 1cc/ (m2day) hereinafter, evoh layer is clipped between two layers of PE film that the mechanical strength of evoh layer can be improved, stretch
Contracting and wearability, evoh layer barrier properties for gases with higher and humidity resistance.
2. metal layer is arranged in the utility model, packaging bag can be made to play the role of being protected from light.
3. the utility model adopts internal layer, cladding material is all made of co-extrusion PE, can protect PVA layers of water resistance, while can
With the corrosion resistance of guard metal layer.
Detailed description of the invention
Attached drawing 1 is the first structural schematic diagram of the utility model；
Attached drawing 2 is second of structural schematic diagram of the utility model；
Attached drawing 3 is the third structural schematic diagram of the utility model；
Attached drawing 4 is the 4th kind of structural schematic diagram of the utility model；
Attached drawing 5 is the 5th kind of structural schematic diagram of the utility model；
In figure: 1, co-extrusion PE layers；2, PVA coating layer；3, pattern printed layers；4, glue layer；5, metal layer；6, evoh layer；
7, bilayer PE film.
Specific embodiment:
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, no
For limiting the present invention.
Embodiment 1:
A kind of double-deck resistance oxygen is protected from light packaging bag, and composition includes: the double-deck PE film (7) and PE layers of co-extrusion (1), the double-deck PE film
(7) metal layer (5) and PVA coating layer (2) are respectively set between PE layers of co-extrusion (1), accompanies evoh layer between the double-deck PE film (7)
(6), co-extrusion PE layers are formed by LLDPE, LDPE, EVA and metallocene blending extrusion.
The resistance oxygen rate of PVA coating layer and evoh layer is both less than 1cc/ (m2day) can by the setting of two layers of oxygen-proof membrane
It effectively prevent the oxidation of food in packaging film, go bad, while can keep the fragrance of packaged film object that can not be lost, have outstanding
Fresh-keeping, guarantor's perfume, guarantor's function of odor；
LLDPE layers of heat sealability is good, and tensile break strength and elongation at break are big, and tensile strength is thick up to 25.5MPa
Degree is 25 μm；
Co-extrusion PE is formed by LLDPE, LDPE, EVA and metallocene blending extrusion.Tensile break strength can be improved and prolong
Rate is stretched, tensile strength can reach 300% up to 20MPa, elongation percentage.
Metal layer (5) is vacuum aluminum-coated or vacuum copper facing.
There is splendid metallic luster using vacuum aluminum-coated, light reflectivity has good photophobism, anti-purple up to 97%
Outer light irradiation, extends the shelf-life of content, while improving the brightness of film.
Metal layer (5) with a thickness of 0.01-0.1um.
The thickness of metal layer is set as 0.01-0.1 μm, while can playing the effect being protected from light, can be sealed with save the cost
Mouth performance is good, and metal layer setting does not need good toughness between compound PE and PE layers, and the toughness of packaging bag mainly passes through altogether
PE layers are squeezed to realize, metal layer primarily serves the effect being protected from light.
PVA coating layer (2) with a thickness of 0.1-100 μm.
Evoh layer (6) with a thickness of 0.1-100 μm.
PVA coating layer (2) is arranged in the inside of metal layer, and the double-deck PE film is as internal layer, metal layer (5) and PE layers of co-extrusion
Between set gradually glue layer and pattern printed layers from inside to outside；
The double-deck PE film be PE layers of two layers co-extrusion and be clipped between the structure that squeezes out jointly of evoh layer；
Adhesive is Resin adhesive, and viscosity is high, peel strength with higher, heat resistance with higher and weather-proof
Property, it can be adapted for different ambient temperature variations.
Embodiment 2:
The present embodiment the difference from embodiment 1 is that: PVA coating layer (2) is arranged in the outside of metal layer, and the double-deck PE film is made
For internal layer, glue layer and pattern printed layers are set gradually from inside to outside between metal layer (5) and PVA coating layer (2)；
The double-deck PE film be PE layers of two layers co-extrusion and be clipped between the structure that squeezes out jointly of evoh layer；
Embodiment 3:
The present embodiment the difference from embodiment 1 is that: PVA coating layer (2) is arranged in the outside of metal layer, and the double-deck PE film is made
For outer layer, pattern printed layers, metal layer (5) and the co-extrusion PE as internal layer are set between metal layer (5) and PVA coating layer (2)
Glue layer is set between layer；
The double-deck PE film be PE layers of two layers co-extrusion and be clipped between the structure that squeezes out jointly of evoh layer；
Embodiment 4:
The present embodiment the difference from embodiment 1 is that: PVA coating layer (2) is arranged in the outside of metal layer, and the double-deck PE film is made
For outer layer, glue layer and pattern printed layers are set gradually from inside to outside between metal layer (5) and PVA coating layer (2)；
The double-deck PE film be PE layers of two layers co-extrusion and be clipped between the structure that squeezes out jointly of evoh layer；
Embodiment 5:
The present embodiment the difference from embodiment 1 is that: PVA coating layer (2) is arranged in the outside of metal layer, and the double-deck PE film is made
For outer layer, pattern printed layers are set, metal layer (5) and as glue is arranged between PE layers of co-extrusion of internal layer outside the double-deck PE film (7)
Water layer；
The double-deck PE film be PE layers of two layers co-extrusion and be clipped between the structure that squeezes out jointly of evoh layer；
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of double-deck resistance oxygen is protected from light packaging bag, composition includes: the double-deck PE film (7) and PE layers of co-extrusion (1), it is characterized in that: double
Metal layer (5) and PVA coating layer (2) is respectively set between layer PE film (7) and PE layers of co-extrusion (1), is accompanied between the double-deck PE film (7)
Evoh layer (6), PE layers of co-extrusion are formed by LLDPE, LDPE, EVA and metallocene blending extrusion.
2. the double-deck resistance oxygen according to claim 1 is protected from light packaging bag, it is characterized in that: metal layer (5) is vacuum aluminum-coated or true
Empty copper facing.
3. the double-deck resistance oxygen according to claim 1 or 2 is protected from light packaging bag, it is characterized in that: metal layer (5) with a thickness of
0.01-0.1um。
4. the double-deck resistance oxygen according to claim 1 is protected from light packaging bag, it is characterized in that: PVA coating layer (2) with a thickness of 0.1-
100μm。
5. the double-deck resistance oxygen according to claim 1 is protected from light packaging bag, it is characterized in that: evoh layer (6) with a thickness of 0.1-100
μm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821376041.0U CN208585555U (en) | 2018-08-24 | 2018-08-24 | Bilayer resistance oxygen is protected from light packaging bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821376041.0U CN208585555U (en) | 2018-08-24 | 2018-08-24 | Bilayer resistance oxygen is protected from light packaging bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208585555U true CN208585555U (en) | 2019-03-08 |
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ID=65545076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821376041.0U Active CN208585555U (en) | 2018-08-24 | 2018-08-24 | Bilayer resistance oxygen is protected from light packaging bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208585555U (en) |
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2018
- 2018-08-24 CN CN201821376041.0U patent/CN208585555U/en active Active
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