CN210062291U - Multilayer hinders oxygen complex film and packing carton - Google Patents
Multilayer hinders oxygen complex film and packing carton Download PDFInfo
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- CN210062291U CN210062291U CN201920594390.8U CN201920594390U CN210062291U CN 210062291 U CN210062291 U CN 210062291U CN 201920594390 U CN201920594390 U CN 201920594390U CN 210062291 U CN210062291 U CN 210062291U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
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Abstract
The utility model discloses an oxygen complex film and packing carton are hindered to multilayer, the multilayer hinders oxygen complex film including PETG thin layer, barrier layer and the biaxial stretching thin layer that stacks gradually the setting, wherein, the barrier layer includes EVOH thin layer and PA thin layer, just PETG thin layer with between the barrier layer with between the biaxial stretching thin layer and the EVOH thin layer with between the PA thin layer, all compound through the bond line that the adhesive formed. The utility model provides a multilayer hinders oxygen complex film can also separate completely with the PET packing carton after the encapsulation to make the discarded PET packing carton after finishing using can retrieve as PET plastics and recycle, simultaneously, through regard as the barrier layer with EVOH film and PA film jointly, further improved the multilayer and hindered the separation nature of oxygen complex film to oxygen.
Description
Technical Field
The utility model relates to a packaging material technical field, in particular to food package technical field, concretely relates to multilayer hinders oxygen complex film and packing carton.
Background
The multilayer composite packaging material prepared by the multilayer coextrusion method can meet the standards of boiling resistance, baking resistance and low-temperature freezing resistance, and part of the multilayer composite packaging material also has the functions of gas barrier, shading, moisture resistance and the like, thereby having wide application range. When the existing multilayer composite packaging material is selected as a food packaging material, for example, when the multilayer composite packaging material is used as a cover film of a PET (polyethylene terephthalate) food packaging box, the PET food packaging box is difficult to completely peel off from the PET food packaging box after being packaged with a PET packaging box body, so that the PET food packaging box can only be treated as waste products due to the fact that the PET food packaging box contains impurities which are difficult to separate during recycling, and cannot be recycled as PET plastics.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a multilayer hinders oxygen complex film and packing carton, aims at providing the packaging material that can separate completely with PET packing carton body after the encapsulation.
In order to realize the above-mentioned purpose, the utility model provides an oxygen complex film is hindered to multilayer, include PETG thin layer, barrier layer and the biaxial stretching thin layer that stacks gradually the setting, wherein, the barrier layer includes EVOH thin layer and PA thin layer, just PETG thin layer with between the barrier layer with between the biaxial stretching thin layer and the EVOH thin layer with between the PA thin layer, all compound through the bond line that the adhesive formed.
Optionally, the film comprises a PETG film layer, an EVOH film layer, a PA film layer and a biaxial stretching film layer which are sequentially stacked.
Optionally, the thickness ratio of the PETG film layer, the EVOH film layer, the PA film layer and the biaxially oriented film layer is (5-7): (3-5): (3-5): (5-7).
Optionally, the film comprises a PETG film layer, a first EVOH film layer, a first PA film layer, a second EVOH film layer, a second PA film layer and a biaxial stretching film layer which are sequentially stacked.
Optionally, the thickness ratio of the PETG film layer, the first EVOH film layer, the first PA film layer, the second EVOH film layer, the second PA film layer, and the biaxially oriented film layer is (5-7): (1-2): (2-3): (2-3): (1-2): (5-7).
Optionally, the total thickness of the multi-layer oxygen-barrier composite film is 60-100 μm.
Optionally, the material of the biaxially oriented film layer comprises at least one of a biaxially oriented polypropylene film and a biaxially oriented polyester film.
Further, the utility model also provides a packing box, including end box and epiphragma, wherein, end box is the PET material, the epiphragma is as above the multilayer hinder the oxygen complex film, just the multilayer hinder the oxygen complex film with when end box encapsulates, make the multilayer hinder the PETG thin layer of oxygen complex film with end box laminating carries out the heat-seal.
The utility model provides an among the technical scheme, regard as with PETG thin layer and biaxial stretching thin layer multilayer composite film's skin to EVOH film and PA film conduct multilayer composite film's interior barrier layer, wherein PETG thin layer is used for encapsulating with the PET packing carton, makes the multilayer hinders the oxygen complex film and can also separate completely with the PET packing carton after the encapsulation to make the discarded PET packing carton after finishing using can regard as PET plastics to retrieve and recycle, simultaneously, through regard as the barrier layer with EVOH film and PA film jointly, further improved the multilayer and hindered the separation nature of oxygen complex film to oxygen.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a multilayer oxygen barrier composite film according to the present invention;
fig. 2 is a schematic structural diagram of another embodiment of the multi-layer oxygen barrier composite film according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Multilayer oxygen barrier composite film | 30 | |
| 10 | PETG |
31 | First PA film layer |
| 20 | EVOH |
32 | Second PA film layer |
| 21 | A first EVOH |
40 | Biaxially oriented |
| 22 | Second EVOH |
50 | Adhesive agent |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
When the existing multilayer composite packaging material is selected as a food packaging material, for example, when the multilayer composite packaging material is used as a cover film of a PET (polyethylene terephthalate) food packaging box, the PET food packaging box is difficult to completely peel off from the PET food packaging box after being packaged with a PET packaging box body, so that the PET food packaging box can only be treated as waste products due to the fact that the PET food packaging box contains impurities which are difficult to separate during recycling, and cannot be recycled as PET plastics.
In view of this, the utility model provides a multilayer hinders oxygen complex film through the selection to the outer material that is used for with the encapsulation of PET packing carton to and design the mode of arranging of barrier layer, when realizing hindering oxygen complex film and can separate completely with the PET packing carton after the encapsulation, improved and hindered the separation rate of oxygen complex film to oxygen, fig. 1 is the utility model provides an embodiment of multilayer complex film. Referring to fig. 1, in the present embodiment, the multilayer oxygen barrier composite film 100 includes a PETG film layer 10, a barrier layer, and a biaxially oriented film layer 40, which are sequentially stacked, wherein the barrier layer includes an EVOH film layer 20 and a PA film layer 30, and bonding layers formed by an adhesive 50 are laminated between the PETG film layer 10 and the barrier layer, between the barrier layer and the biaxially oriented film layer 40, and between the EVOH film layer 20 and the PA film layer 30. The PETG film layer 10 is mainly used for packaging the PET packaging box body and plays a certain supporting role; the EVOH film layer 20 and the PA film layer 30 have a barrier function and mainly have the function of oxygen barrier; the biaxially oriented film layer 40 serves as a support layer and plays a certain role in protecting the EVOH film layer 20 and the PA film layer 30, so that the direct contact between the EVOH film layer 20 and the PA film layer 30 and the outside is reduced, the influence of the external environment on the barrier property is reduced, and the barrier property of the multilayer oxygen barrier composite film 100 on oxygen is ensured; the adhesive 50 is used for bonding and compounding two adjacent film layers, and can be selected from, for example, polyurethane adhesive, acrylic adhesive, biodegradable polymer adhesive, and the like.
The utility model provides an among the technical scheme, regard as with PETG film layer 10 and biaxial stretching film layer 40 multilayer composite film's skin, regard as with EVOH film and PA film multilayer composite film's interior barrier layer, wherein PETG film layer 10 is used for encapsulating with the PET packing carton, makes multilayer hinders oxygen complex film 100 and can also separate with the PET packing carton completely after the encapsulation, thereby makes the discarded PET packing carton after finishing using can retrieve as PET plastics and recycle and has improved the value of the discarded PET packing carton after the consumer uses, and the waste material and the leftover bits that the PET packing carton produced in the shaping course of working also can be retrieved, are favorable to reducing the manufacturing cost of PET packing carton, practice thrift oil resources and reduce environmental pollution etc.; simultaneously, through regard as the barrier layer with EVOH film and PA film jointly, further improved the multilayer and hindered the separation nature of oxygen complex film 100 to oxygen, make and adopting the utility model provides a multilayer hinders when oxygen complex film 100 and PET packing carton cooperation carry out food package, can also prolong the fresh-keeping cycle of food to be favorable to enlarging the sales radius of product, promote the trade development.
The utility model provides an among multilayer hinders oxygen complex film 100, the barrier layer includes EVOH thin layer 20 and PA thin layer 30, wherein, EVOH thin layer 20 with PA thin layer 30 all can set up to individual layer or multilayer. Specifically, referring to fig. 1, in the present embodiment, the multi-layered oxygen barrier composite film 100 includes a PETG film layer 10, an EVOH film layer 20, a PA film layer 30, and a biaxially oriented film layer 40, which are sequentially stacked, that is,the structure of the multilayer oxygen-barrier composite film 100 is a PETG/EVOH/PA/biaxial tension film. In another embodiment provided by the present invention, please refer to fig. 2, the multi-layer oxygen-barrier composite film 100 includes a PETG film layer 10, a first EVOH film layer 21, a first PA film layer 31, a second EVOH film layer 22, a second PA film layer 32, and a biaxially oriented film layer 40 stacked in sequence, that is, the structure of the multi-layer oxygen-barrier composite film 100 is PETG/EVOH/PA/biaxially oriented film. The two composite modes can realize the purpose that the multilayer oxygen-resistant composite film 100 can be completely separated from a PET (polyethylene terephthalate) packing box after being packaged, and simultaneously ensure that the barrier rate of the multilayer oxygen-resistant composite film 100 to oxygen can reach 1cc/m2D below, wherein, for the consideration of the difficulty of the production process, a PETG/EVOH/PA/biaxial tension film composite structure can be selected, and the oxygen barrier rate can reach 0.8cc/m2D, and for the purpose of oxygen barrier rate, a PETG/EVOH/PA/EVOH/PA/biaxially oriented film composite structure can be selected, and the oxygen barrier rate can reach 0.75cc/m2·d。
Further, in the above two kinds of composite structures provided, the thickness of each thin film may not be specifically limited, as long as the composite film simultaneously comprises the above multilayer structure, all belong to the multi-layer oxygen-barrier composite film 100 of the present invention, not only has excellent barrier property, but also can be completely separated from the PET packaging box after being packaged. Preferably, in the composite structure PETG/EVOH/PA/biaxially oriented film provided above, the thickness ratio of the PETG film layer 10, the EVOH film layer 20, the PA film layer 30, and the biaxially oriented film layer 40 is (5-7): (3-5): (3-5): (5-7); in the composite structure PETG/EVOH/PA/biaxially oriented film provided above, the ratio of the thicknesses of the PETG film layer 10, the first EVOH film layer 21, the first PA film layer 31, the second EVOH film layer 22, the second PA film layer 32, and the biaxially oriented film layer 40 is (5 to 7): (1-2): (2-3): (2-3): (1-2): (5-7).
For the barrier film, generally, the thicker the thickness is, the better the barrier property is, but on the premise that the barrier property meets the use requirement, the thinner the thickness is, the better the barrier property is, which is beneficial to reducing the raw material cost, and the product is lighter, in this embodiment, the thickness of the oxygen barrier composite film 100 is preferably 60-100 μm, which has a better barrier property, can meet the food packaging requirement, especially the packaging requirement of fresh food, and the mechanical property can also meet the use requirement.
The biaxially oriented film layer 40 is formed by biaxially oriented film, the biaxially oriented film is formed by extruding polymer particles to form a sheet, and then stretching the sheet in longitudinal and transverse directions, and due to the orientation of stretched molecules, the film has good physical stability, mechanical strength and air tightness, high transparency and glossiness, toughness and wear resistance. In this embodiment, the biaxially oriented film may be at least one of a biaxially oriented polypropylene film (BOPP) and a biaxially oriented polyester film (BOPET), and may be any one of the BOPP and the BOPET, or a composite film formed by the BOPP and the BOPET, and has excellent mechanical properties and a better protective effect on the barrier layer. In other embodiments of the present invention, the multi-layer oxygen-barrier composite film 100 is selected as one of the two-way stretch film and the two-way stretch film is easy to print, so that the surface of the two-way stretch film layer 40 can be directly printed with characters or patterns to obtain a composite film product with a printed layer, so as to mark the packaged product.
Further, the utility model provides a packing carton, including end box and epiphragma, wherein, end box is the PET material, the epiphragma is as above the multilayer hinder oxygen complex film 100, just the multilayer hinder oxygen complex film 100 with end box when encapsulating, make the PETG thin layer 10 that the multilayer hinders oxygen complex film 100 with end box laminating carries out the heat-seal, the packing carton that so obtains, when the consumer is using, the epiphragma can be directly through the mode of tearing and drawing with end box thorough separation for the discarded PET packing carton after the consumer uses can directly obtain recycling as the PET plastics.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides an oxygen complex film is hindered to multilayer which characterized in that, includes PETG thin layer, barrier layer and the biaxial stretching thin layer that stacks gradually the setting, wherein, the barrier layer includes EVOH thin layer and PA thin layer, just PETG thin layer with between the barrier layer with between the biaxial stretching thin layer and the EVOH thin layer with between the PA thin layer, it is all compound through the bond line that the adhesive formed.
2. The multilayer oxygen barrier composite film of claim 1 comprising a PETG film layer, an EVOH film layer, a PA film layer, and a biaxially oriented film layer in sequential stacked arrangement.
3. The multilayer oxygen barrier composite film according to claim 2, wherein the thickness ratio of the PETG film layer, the EVOH film layer, the PA film layer and the biaxially oriented film layer is (5-7): (3-5): (3-5): (5-7).
4. The multilayer oxygen barrier composite film of claim 1 comprising a PETG film layer, a first EVOH film layer, a first PA film layer, a second EVOH film layer, a second PA film layer, and a biaxially oriented film layer, in sequential stacked arrangement.
5. The multilayer oxygen barrier composite film according to claim 4, wherein the thickness ratio of the PETG film layer, the first EVOH film layer, the first PA film layer, the second EVOH film layer, the second PA film layer and the biaxially oriented film layer is (5-7): (1-2): (2-3): (2-3): (1-2): (5-7).
6. The multi-layer oxygen barrier composite film according to claim 1, wherein the total thickness of the multi-layer oxygen barrier composite film is 60 to 100 μm.
7. The multilayer oxygen barrier composite film of claim 1 wherein the biaxially oriented film layer material comprises at least one of biaxially oriented polypropylene film and biaxially oriented polyester film.
8. A packaging box is characterized by comprising a bottom box and a cover film, wherein the bottom box is made of PET materials, the cover film is the multilayer oxygen-barrier composite film according to any one of claims 1 to 7, and when the multilayer oxygen-barrier composite film is packaged with the bottom box, a PETG thin film layer of the multilayer oxygen-barrier composite film is attached to the bottom box for heat sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594390.8U CN210062291U (en) | 2019-04-26 | 2019-04-26 | Multilayer hinders oxygen complex film and packing carton |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594390.8U CN210062291U (en) | 2019-04-26 | 2019-04-26 | Multilayer hinders oxygen complex film and packing carton |
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| CN210062291U true CN210062291U (en) | 2020-02-14 |
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| CN201920594390.8U Expired - Fee Related CN210062291U (en) | 2019-04-26 | 2019-04-26 | Multilayer hinders oxygen complex film and packing carton |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889266A (en) * | 2022-04-27 | 2022-08-12 | 河南银金达彩印股份有限公司 | PETG curtain coating membrane |
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2019
- 2019-04-26 CN CN201920594390.8U patent/CN210062291U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889266A (en) * | 2022-04-27 | 2022-08-12 | 河南银金达彩印股份有限公司 | PETG curtain coating membrane |
| CN114889266B (en) * | 2022-04-27 | 2023-11-07 | 河南银金达彩印股份有限公司 | PETG curtain coating membrane |
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