CN209126274U - A kind of cast polypropylene CPP separation film - Google Patents
A kind of cast polypropylene CPP separation film Download PDFInfo
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- CN209126274U CN209126274U CN201821092507.4U CN201821092507U CN209126274U CN 209126274 U CN209126274 U CN 209126274U CN 201821092507 U CN201821092507 U CN 201821092507U CN 209126274 U CN209126274 U CN 209126274U
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Abstract
The utility model relates to plastic film production technical fields, more specifically, it is related to a kind of cast polypropylene CPP separation film, its key points of the technical solution are that including hot sealing layer, sandwich layer and corona layer, the sandwich layer is located at the centre of the hot sealing layer and the corona layer, and the barrier layer of PE material is respectively arranged between the hot sealing layer and sandwich layer and between corona layer and sandwich layer；The solvent-free gluing dosage form of dual-component polyurethane is all made of between the hot sealing layer, barrier layer, sandwich layer and corona layer into composite membrane.Sandwich layer rigidity with higher, hot sealing layer and corona layer make film have heat sealability and surface tension persistence respectively, dual-component polyurethane solvent-free adhesive the barrier layer of PE material can be respectively fixedly connected between hot sealing layer and sandwich layer and corona layer and sandwich layer between, and the solvent-free adhesive distribution of dual-component polyurethane is comprehensively and uniform, cementation power is relatively stable between layers, and then improves the whole barrier property of film.
Description
Technical field
The utility model relates to plastic film production technical fields, more specifically, it relates to a kind of cast polypropylene CPP
Barrier film.
Background technique
Casting films are that a kind of tensionless winkler foundation of quenching production, the cast film of non-directional are salivated by melt, there is single layer salivation
With multi-layer co-extruded salivation two ways.Compared with blown film, its main feature is that speed of production is fast, yield is high, the transparency of film, gloss
Property, the thickness uniformity etc. it is all extremely outstanding.Simultaneously as being cast film subsequent handling, such as prints, is compound all extremely square
Just, thus it is widely used in the packagings of food, medical supplies, textile, fresh flower, daily necessities.
Currently, the packaging of agricultural product especially grain, generally uses woven bag or packaging film, current agricultural product packaging
Film has continued to use the production technology at the beginning of the nineties in last century, and generally existing heat-sealing sealing out-of-flatness, sealing are insecure, and film strength is not
It is enough, cause broken bag and leak-off pocket rate high, the problem of the barrier property difference of film.And for for the agricultural product packet using woven bags packaging
Pack, barrier property is poor, cannot adaptively field width is wide, the temperature difference makes a variation big situation, it is therefore desirable to improve.
Utility model content
In view of the deficiencies of the prior art, the purpose of the utility model is to provide a kind of cast polypropylene CPP separation film, have
While preferable intensity and suppleness, barrier property preferably effect.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of cast polypropylene
CPP barrier film, including hot sealing layer, sandwich layer and corona layer, the sandwich layer are located at the centre of the hot sealing layer and the corona layer, institute
State between hot sealing layer and sandwich layer and be respectively arranged between corona layer and sandwich layer the barrier layer of PE material；The hot sealing layer, resistance
The solvent-free gluing dosage form of dual-component polyurethane is all made of between interlayer, sandwich layer and corona layer into composite membrane.
By using above-mentioned technical proposal, by sandwich layer rigidity with higher, hot sealing layer and corona layer make film respectively
Film has heat sealability and surface tension persistence, while the solvent-free adhesive of dual-component polyurethane can be by the barrier of PE material
Layer be respectively fixedly connected between hot sealing layer and sandwich layer and corona layer and sandwich layer between, and dual-component polyurethane solvent-free glue
Glutinous agent distribution is comprehensively and uniform, so that cementation power is relatively stable between layers for film, and then improves the entirety of film
Barrier property, while extending the service life of casting films.
Preferably, the hot sealing layer and core layer thickness ratio are 1:(2~3), the thickness ratio of the corona layer and sandwich layer is 1:
(2~3).
By using above-mentioned technical proposal, the performance of hot sealing layer, corona layer and sandwich layer is in preferable state, film
Overall performance is more excellent.
Preferably, the thickness range of the sandwich layer is 20~35 μm.
By using above-mentioned technical proposal, when the thickness range of sandwich layer is in 20~35 μ ms, the rigidity of sandwich layer is in
Preferably state, usage amount is minimum while can satisfy film enough rigidity, reduces production cost.
Preferably, the corona layer is plating aluminum oxide polyester film layer, and the thickness range of the plating aluminum oxide polyester film layer is
12~15 μm.
By using above-mentioned technical proposal, in this thickness range, the transparency and tension persistence of corona layer are preferable, energy
Usage amount is minimum while enough meeting film enough tension, reduces production cost.
Preferably, the corona layer is provided with waterproof membrane away from the surface of barrier layer.
By using above-mentioned technical proposal, the setting of waterproof membrane can not only prevent from water convection current from prolonging film causing directly to damage
It is bad, at the same can also anti-water-stop body cause after casting films remained on surface bacterium etc. breed, to play guarantor to casting films
Shield effect.
Preferably, the thickness range of the waterproof membrane is 7~9 μm.
By using above-mentioned technical proposal, in this thickness range, waterproof membrane can play sufficient waterproof effect, simultaneously
It is also possible that the usage amount of waterproof membrane is minimum, production cost is reduced, while but also the integral thickness of casting films is smaller, surely
It is qualitative higher.
Preferably, the waterproof membrane is provided with multiple miniatur convexes away from the surface of corona layer.
By using above-mentioned technical proposal, the setting of convex grain increases the roughness of film surface, improves the anti-of film
Sliding effect.
Preferably, the waterproof membrane is provided with anti-skid chequer away from the surface of corona layer.
By using above-mentioned technical proposal, the setting of anti-skid chequer improves the roughness of film surface, improves film
Antiskid effect, while compared to convex grain, it is easier to it processes.
In conclusion the utility model has the following beneficial effects:
1, film makes film have heat sealability and surface respectively by sandwich layer rigidity with higher, hot sealing layer and corona layer
Tension persistence, while the barrier layer of PE material can be respectively fixedly connected with and seal by the solvent-free adhesive of dual-component polyurethane
Between layer and sandwich layer and between corona layer and sandwich layer, and the solvent-free adhesive distribution of dual-component polyurethane is comprehensively and uniform,
So that cementation power is relatively stable between layers for film, and then the whole barrier property of film is improved, extended simultaneously
The service life of casting films；
2, the setting of waterproof membrane can not only prevent from water convection current from prolonging film causing directly to damage, while can also anti-water-stop body
Bacterium etc. is caused to breed after casting films remained on surface, to play protective effect to casting films.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one film of the utility model embodiment；
Fig. 2 is the structural schematic diagram of two film of the utility model embodiment.
In figure: 1, sandwich layer；2, corona layer；3, hot sealing layer；4, barrier layer；5, waterproof membrane；6, convex grain；7, anti-skid chequer.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Implementation one: a kind of cast polypropylene CPP separation film, referring to Fig.1, including hot sealing layer 3, sandwich layer 1 and corona layer 2, and
Sandwich layer 1 is located among hot sealing layer 3 and corona layer 2.
Meanwhile hot sealing layer 3 and 1 thickness ratio of sandwich layer are 1:(2~3), the thickness ratio of corona layer 2 and sandwich layer 1 is 1:(2~3).
In the present embodiment, the thickness ratio of hot sealing layer 3 and 1 thickness of sandwich layer ratio preferably 1:2.0, corona layer 2 and sandwich layer 1 is 1:2.0,
Under this thickness ratio, the performance of hot sealing layer 3, corona layer 2 and sandwich layer 1 is in preferable state, and the overall performance of film is more excellent.
Specifically, hot sealing layer 3 is that co-extruded modified curtain coating poly- third is blended in 5~30% mass fraction propylene-based elastomerics of addition
Alkene film layer, in the present embodiment, the mass fraction that co-extruded modified cast polypropylene is blended in propylene-based elastomeric is preferably 15%,
Under this mass fraction, cast polypropylene film thickness is uniform, and vertical and horizontal performance is uniform, so that cast polypropylene film
Enable the structural strength of casting films more uniform on the whole.
Corona layer 2 is plating aluminum oxide polyester film layer, and there is plating aluminum oxide polyester film good transparency and surface tension to hold
Long property；Meanwhile the thickness range of corona layer 2, at 12~15 μm, in the present embodiment, the thickness of corona layer 2 is preferably 13 μm,
Under this thickness, the tension persistence of corona layer 2 is preferable, and usage amount is minimum while can satisfy film enough tension, reduces
Production cost.
Sandwich layer 1 is the film layer of modified polypropene and ethylene propylene copolymer blended material, and wherein ethylene propylene copolymer accounts for
Than 20~40%, and the thickness range of sandwich layer 1 is 20~35 μm, and in the present embodiment, the thickness of sandwich layer 1 is preferably 26 μm, herein
Under thickness, the rigidity of sandwich layer 1 is more excellent.
Referring to Fig.1, the resistance of PE material is respectively arranged between hot sealing layer 3 and sandwich layer 1 and between corona layer 2 and sandwich layer 1
Interlayer 4, while the solvent-free gluing dosage form of dual-component polyurethane is all made of between hot sealing layer 3, barrier layer 4, sandwich layer 1 and corona layer 2
At composite membrane.
Dual-component polyurethane solvent-free adhesive the barrier layer 4 of PE material can be respectively fixedly connected with hot sealing layer 3 with
Between sandwich layer 1 and between corona layer 2 and sandwich layer 1, and the solvent-free adhesive distribution of dual-component polyurethane is comprehensively and uniform, makes
Obtaining film, cementation power is relatively stable between layers, and then improves the whole barrier property of film, extends casting films
Service life.
Meanwhile corona layer 2 is provided with waterproof membrane 5 away from the surface of barrier layer 4, wherein waterproof membrane 5 is preferably common
PE waterproof membrane 5, and the thickness range of waterproof membrane 5, at 7~9 μm, in the present embodiment, the thickness of waterproof membrane 5 is preferably 7 μm.It is anti-
The setting of moisture film 5 can not only prevent from water convection current from prolonging film causing directly to damage, at the same can also anti-water-stop body in casting films table
Bacterium etc. is caused to breed after the residual of face, to play protective effect to casting films.
In addition, waterproof membrane 5 is provided with multiple miniatur convexes 6 away from the surface of corona layer 2, and multiple convex grains 6 are uniformly distributed
On waterproof membrane 5.The setting of convex grain 6 increases the roughness of film surface, improves the antiskid effect of film.
Embodiment two: a kind of cast polypropylene CPP separation film, referring to Fig. 2, waterproof membrane 5 is arranged away from the surface of corona layer 2
There is anti-skid chequer 7.The setting of anti-skid chequer 7 increases the roughness of film surface, improves the antiskid effect of film；Simultaneously with implementation
The setting of one convexity grain 6 of example, it is easier to fabricate.
Above-described embodiment is only the explanation to the utility model, is not limitations of the present invention, this field
Technical staff can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but only
It will be in the scope of the claims of the utility model all by the protection of Patent Law.
Claims (4)
1. a kind of cast polypropylene CPP separation film, including hot sealing layer (3), sandwich layer (1) and corona layer (2), sandwich layer (1) position
In the hot sealing layer (3) and the centre of the corona layer (2), it is characterized in that: between the hot sealing layer (3) and sandwich layer (1) and
The barrier layer (4) of PE material is respectively arranged between corona layer (2) and sandwich layer (1)；The hot sealing layer (3), barrier layer (4), core
The solvent-free gluing dosage form of dual-component polyurethane is all made of between layer (1) and corona layer (2) into composite membrane, the hot sealing layer (3) and
Sandwich layer (1) thickness ratio is 1:(2~3), the thickness ratio of the corona layer (2) and sandwich layer (1) is 1:(2~3)；The sandwich layer (1)
Thickness range be 20~35 μm；The corona layer (2) is plating aluminum oxide polyester film layer, the thickness of the plating aluminum oxide polyester film layer
Spending range is 12~15 μm, and the corona layer (2) is provided with waterproof membrane (5) away from the surface of barrier layer (4).
2. a kind of cast polypropylene CPP separation film according to claim 1, it is characterized in that: the thickness of the waterproof membrane (5)
Range is 7~9 μm.
3. a kind of cast polypropylene CPP separation film according to claim 2, it is characterized in that: the waterproof membrane (5) is away from electricity
The surface of dizzy layer (2) is provided with multiple miniatur convexes (6).
4. a kind of cast polypropylene CPP separation film according to claim 2, it is characterized in that: the waterproof membrane (5) is away from electricity
The surface of dizzy layer (2) is provided with anti-skid chequer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821092507.4U CN209126274U (en) | 2018-07-10 | 2018-07-10 | A kind of cast polypropylene CPP separation film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821092507.4U CN209126274U (en) | 2018-07-10 | 2018-07-10 | A kind of cast polypropylene CPP separation film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209126274U true CN209126274U (en) | 2019-07-19 |
Family
ID=67228009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821092507.4U Active CN209126274U (en) | 2018-07-10 | 2018-07-10 | A kind of cast polypropylene CPP separation film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209126274U (en) |
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2018
- 2018-07-10 CN CN201821092507.4U patent/CN209126274U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230717 Address after: 201100 floor 3-4, building 15, No. 631, Jiangchuan Road, Minhang District, Shanghai Patentee after: Haiying printing technology (Shanghai) Co.,Ltd. Address before: 201600 building 3-5, 68 gangde Road, Xiaokunshan Town, Songjiang District, Shanghai Patentee before: SHANGHAI DAHUI PLASTIC INDUSTRY CO.,LTD. |