CN209365542U - A kind of food packing composite film - Google Patents
A kind of food packing composite film Download PDFInfo
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- CN209365542U CN209365542U CN201822212788.9U CN201822212788U CN209365542U CN 209365542 U CN209365542 U CN 209365542U CN 201822212788 U CN201822212788 U CN 201822212788U CN 209365542 U CN209365542 U CN 209365542U
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- food packing
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Abstract
The utility model provides a kind of food packing composite film, including multiple layer combination structure, and the multiple layer combination structure includes: outer layer, and the outer layer is Biaxial tension polyethylene film (BOPE)；Barrier layer, the barrier layer are polyethylene coating；Adhesive layer, the adhesive layer are solvent borne polyurethane adhesive；Internal layer, the internal layer are polyethylene film (PE) or cast polypropylene film (CPP)；The outer layer, the barrier layer, the adhesive layer and the internal layer successively bonding connection.The utility model uses new multiple layer combination structure, makes film under conditions of keeping high mechanical strength, improves barrier property, and the preparation process requirement of the composite membrane is lower, can be improved the product quality prepared, and save preparation cost.And the material of the composite membrane is plastic film, and the later period can be more convenient to recycle, and has good environmental protection characteristic.
Description
Technical field
The utility model relates to Food Packaging technology field, in particular to a kind of food packing composite film.
Background technique
In plastic flexible package system, plastic vacuum packaging is an important field.Vacuum packaging can more effectively make
Food keeps original color, smell, taste, shape and nutritive value for a long time.More in existing vacuum packaging is biaxial tension nylon
Film laminated polyethylene film, with good mechanical performance and puncture resistance, but BON biaxially oriented nylon film cost
Height, barrier property are also poor.The composite packaging of various material is unfavorable for the convenience of recovery operation simultaneously.Patent announcement number is CN
The utility model patent of 206242631U discloses a kind of rice packaging composite membrane, uses layered combinations thereof structure, described big
Rice composite packing film successively includes: outer layer from outside to inside, and the material of the outer layer is Biaxial tension polyethylene film；Gluing
Layer, the material of the adhesive layer are adhesive for polyurethane；Barrier layer, the material of the barrier layer are polyvinyl alcohol；Internal layer, it is described
The material of internal layer is metallocene PE；The outer layer, the adhesive layer, the barrier layer and the internal layer successively company of bonding
It connects.The adhesive for polyurethane is no-solvent type adhesive for polyurethane.Although the utility model theoretical can solve the problems, such as this, should
Resistance oxygen, the block-water performance of film are poor, and metallocene polyethylene film thickness, uniformity and the heat resistance can not show a candle to double stretching to
Polyethylene film causes the coating of polyvinyl alcohol to be easy to appear and does not apply, and coating drying rear film deformation is big, the product prepared
It is difficult to ensure high quality, and increases the cost of production.
Utility model content
In consideration of it, solving composite membrane processing in the prior art the utility model proposes a kind of food packing composite film
Difficulty is big, and barrier property is poor, and the technical issues of high production cost.
The technical solution of the utility model is achieved in that
A kind of food packing composite film, including multiple layer combination structure, the multiple layer combination structure include:
Outer layer, the outer layer are Biaxial tension polyethylene film (BOPE)；
Barrier layer, the barrier layer are polyethylene coating；
Adhesive layer, the adhesive layer are solvent borne polyurethane adhesive；
Internal layer, the internal layer are polyethylene film (PE) or cast polypropylene film (CPP)；
The outer layer, the barrier layer, the adhesive layer and the internal layer successively bonding connection.
More preferably, the outer layer with a thickness of 10-80 μm.The thickness is the preferred value of the film of this structure.Polyethylene
Film heat resistance is poor, and the contraction of Biaxial tension polyethylene film during the drying process can be further decreased under the thickness.
More preferably, the barrier layer is that polyvinyl alcohol emulsions are coated with.Make barrier layer and outer by the way of coating
More closely, and film thickness is uniform for the adhesion of layer, and consistency is high.
More preferably, the solid content of the polyvinyl alcohol emulsions is 4-20%.The viscosity of too high levels polyvinyl alcohol emulsions
Excessive, the thickness of film is difficult to control, and viscosity is too low, cannot play good barrier action.
More preferably, the coating weight of the barrier layer is 0.1-1.0g/m2.It can be effectively by barrier layer and interior using the coating weight
Layer bonding.
More preferably, the spread of the adhesive layer is 1.0-5.0g/m2。
More preferably, the internal layer with a thickness of 20-110 μm.Make the puncture-resistant ability and obstructing capacity of film in the thickness
Strengthened.
Compared with prior art, the utility model has the beneficial effects that the utility model uses new multiple layer combination structure,
Make film under conditions of keeping high mechanical strength, improves barrier property, and the preparation process of the composite membrane requires lower, energy
The product quality prepared enough is improved, and saves preparation cost.And the material of the composite membrane is plastic film, and the later period can
More convenient recycling, has good environmental protection characteristic.
Further, the utility model uses special thickness parameter and preparation parameter, makes the pull resistance of film entirety
Energy, puncture-resistant ability, obstructing capacity get a promotion, and are better than existing film, the packaging suitable for varieties of food items.It is especially suitable
In rice and hard snack products.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only the preferred reality of the utility model
Example is applied, it for those of ordinary skill in the art, without any creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model one embodiment；
Appended drawing reference in figure are as follows: outer layer 1, barrier layer 2, adhesive layer 3, internal layer 4.
Specific embodiment
In order to be best understood from the utility model technology contents, a specific embodiment is provided below, and in conjunction with attached drawing to this reality
It is described further with novel.
A kind of food packing composite film, structure is as shown in Figure 1, it uses MULTILAYER COMPOSITE to form.Its multilayered structure is from outer
Outer layer 1, barrier layer 2, adhesive layer 3, internal layer 4 are followed successively by interior.
Outer layer 1 is Biaxial tension polyethylene film, has good mechanical performance.Biaxially-oriented polyethylene can provide phase
With while mechanical performance with the characteristic more at low cost than BON biaxially oriented nylon film.Non-stretched polyethylene film is compared simultaneously
There is smaller shrinking percentage, is more suitable for being coated with.Outer layer 1 with a thickness of 10-80 μm, preferably 20-60 μm.
Barrier layer 2 is to dry after polyvinyl alcohol emulsions are coated with, with high oxygen-barrier property.Polyvinyl alcohol cream
The solid content of liquid is 4-20%.Coating weight is preferably 0.5g/m2, and polyethylene coating can be less than under the coating weight
The barriering effect of 1cc/ (m224h0.1MPa).Polyvinyl alcohol is famous environment-friendly materials, itself is nontoxic, biodegrade
Property is excellent, can be degradable in field.Tri- kinds of elements of C, H, O itself are contained only, recovery processing does not generate other harmful substances.
It can survey and be directly printed in it after the completion of coating.Barrier layer 2 is coated on the inner face of outer layer 1, and coating weight can be 0.1-
1.0g/m2, under the coating weight, barrier layer has good barriering effect.
Adhesive layer 3 is solvent borne polyurethane adhesive, and commercially available any a solvent type composite polyurethane compound adhesive can be selected,
Product is mature, cheap.Its effect is that coating barrier layer 2 and internal layer 4 are glued together.The coating weight of adhesive layer is 1.0-
5.0g/m2 can effectively be bonded barrier layer 2 and internal layer 4 using the coating weight.
Internal layer 4 is polyethylene film (PE) or cast polypropylene film (CPP).Internal layer 4 is with a thickness of 20-110 μm, preferably
20-90μm。
Outer layer 1, barrier layer 2 and internal layer 4, are all environment-friendly materials, and recovery processing does not generate poisonous and harmful substance.
The composite membrane of the implementation case is coated with or is combined with this from outside to inside by above-mentioned four layers.It is strong with barrier property,
Environmental protection, it is at low cost the features such as.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of food packing composite film, it is characterised in that: including multiple layer combination structure, the multiple layer combination structure includes:
Outer layer, the outer layer are Biaxial tension polyethylene film；
Barrier layer, the barrier layer are polyethylene coating；
Adhesive layer, the adhesive layer are solvent borne polyurethane adhesive；
Internal layer, the internal layer are polyethylene film or cast polypropylene film；
The outer layer, the barrier layer, the adhesive layer and the internal layer successively bonding connection.
2. a kind of food packing composite film as described in claim 1, it is characterised in that: the outer layer with a thickness of 10-80 μm.
3. a kind of food packing composite film as claimed in claim 1 or 2, it is characterised in that: the barrier layer is polyvinyl alcohol
Emulsion coating forms.
4. a kind of food packing composite film as claimed in claim 3, it is characterised in that: the coating weight of the barrier layer is 0.1-
1.0g/m2。
5. a kind of food packing composite film as described in claim 1,2 or 4, it is characterised in that: the spread of the adhesive layer is
1.0-5.0g/m2。
6. a kind of food packing composite film as claimed in claim 5, it is characterised in that: the internal layer with a thickness of 20-110 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822212788.9U CN209365542U (en) | 2018-12-27 | 2018-12-27 | A kind of food packing composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822212788.9U CN209365542U (en) | 2018-12-27 | 2018-12-27 | A kind of food packing composite film |
Publications (1)
| Publication Number | Publication Date |
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| CN209365542U true CN209365542U (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822212788.9U Active CN209365542U (en) | 2018-12-27 | 2018-12-27 | A kind of food packing composite film |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407466A (en) * | 2022-01-18 | 2022-04-29 | 珠海市德燊环保包装有限公司 | Composite membrane and preparation method and application thereof |
| CN117141077A (en) * | 2023-11-01 | 2023-12-01 | 南通金丝楠膜材料有限公司 | Barrier type polyethylene single-material composite antibacterial film and preparation method thereof |
-
2018
- 2018-12-27 CN CN201822212788.9U patent/CN209365542U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407466A (en) * | 2022-01-18 | 2022-04-29 | 珠海市德燊环保包装有限公司 | Composite membrane and preparation method and application thereof |
| CN117141077A (en) * | 2023-11-01 | 2023-12-01 | 南通金丝楠膜材料有限公司 | Barrier type polyethylene single-material composite antibacterial film and preparation method thereof |
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