CN209141613U - A kind of corona surface heat-sealing curtain coating polyethylene breathable film - Google Patents
A kind of corona surface heat-sealing curtain coating polyethylene breathable film Download PDFInfo
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- CN209141613U CN209141613U CN201821091399.9U CN201821091399U CN209141613U CN 209141613 U CN209141613 U CN 209141613U CN 201821091399 U CN201821091399 U CN 201821091399U CN 209141613 U CN209141613 U CN 209141613U
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- breathable film
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Abstract
The utility model relates to cast film technical fields, disclose a kind of corona surface heat-sealing curtain coating polyethylene breathable film, its key points of the technical solution are that including hot sealing layer, sandwich layer and corona layer, the sandwich layer is located among hot sealing layer and corona layer, the sandwich layer is modified poly ethylene layer, and the sandwich layer is the polythene blending modified layer of different densities, the ventilated membrane is the porous breathable film with several micropores.The ventilated membrane has better permeability.
Description
Technical field
The utility model relates to cast film technical fields, more specifically, it relates to which a kind of corona surface heat-sealing curtain coating is poly-
Ethylene ventilated membrane.
Background technique
Film can be divided into cast film and inflation film according to production technology, and wherein cast film is rapid by melt salivation
The cast film of a kind of tensionless winkler foundation of cold production, non-directional, compared with blown film, its main feature is that speed of production is fast, yield is high, film
The transparency, glossiness, the thickness uniformity etc. it is all extremely outstanding.
In cast film production, usually using polyethylene as raw material, film is set to have that moisture resistance is good, penetrability is small etc. excellent
Point；And other raw materials such as polyethylene and polystyrene, polypropylene or glassine paper are compounded to form film, then have both film a variety of
Performance.
However the permeability of prior art film is bad, is poorly suited for use in the controlled atmosphere of vegetables, fresh flower and fruit
Fresh-keeping packaging and medical treatment and health care product packaging etc. need the occasion of gas across lamellae.
Utility model content
In view of the deficiencies of the prior art, curtain coating polyethylene is sealed the purpose of the utility model is to provide a kind of corona surface to breathe freely
Film, the ventilated membrane have better permeability.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of corona surface heat-sealing stream
Prolong polyethylene breathable film, including hot sealing layer, sandwich layer and corona layer, the sandwich layer is located among hot sealing layer and corona layer, the core
Layer is modified poly ethylene layer, and the sandwich layer is the polythene blending modified layer of different densities, and the ventilated membrane is with several micro-
The porous breathable film in hole.
By using above-mentioned technical proposal, film has higher stiffness by sandwich layer, and hot sealing layer and corona layer make thin respectively
Film has heat sealability and surface tension persistence；The micropore that film has allows gas to pass through film well, to make film
With better permeability；Sandwich layer is the polythene blending modified layer of different densities, improves the tensile strength of sandwich layer and hard
Degree, the tensile strength and hardness of film are higher.
Preferably, the thickness of the hot sealing layer and sandwich layer ratio is 1:3.5~4.5, the thickness ratio of the corona layer and sandwich layer
For 1:3.5~4.5.
By using above-mentioned technical proposal, the performance of hot sealing layer, corona layer and sandwich layer is played well.
Preferably, the corona layer is atactic copolymerized polypropene layer, and the hot sealing layer is polypropylene and polyethylene blend layer.
By using above-mentioned technical proposal, atactic copolymerized polypropene has the preferable transparency and glossiness, improves thin
The transparency and glossiness of film；Hot sealing layer is polypropylene and polyethylene blend layer, so that film more shock resistance and flexibility are more
It is good.
Preferably, the micropore size having on the ventilated membrane is 0.3~0.35 μm.
By using above-mentioned technical proposal, micropore is less than fogdrop diameter and is much larger than the diameter of gas molecule, to hinder
Drop flows through, and makes film that can breathe freely well, it may have certain waterproof performance.
Preferably, the OTR oxygen transmission rate of the ventilated membrane is 5000~7000ml/(m20.1MPa for 24 hours).
By using above-mentioned technical proposal, the OTR oxygen transmission rate of ventilated membrane is more appropriate, has both guaranteed that ventilated membrane is saturating well
Gas is also obstructed to inside and outside ventilated membrane very well.
Preferably, the sandwich layer is linear low density polyethylene resin and high-density polyethylene resin blending and modifying layer.
By using above-mentioned technical proposal, the effect for improving sandwich layer tensile strength and hardness is more preferable.
Preferably, antistatic layer is equipped between the hot sealing layer and sandwich layer, the antistatic layer is added with antistatic agent
Polyethylene layer.
By using above-mentioned technical proposal, antistatic layer makes film have anti-static function, and film is more applicable in.
Preferably, uvioresistant layer is equipped between the corona layer and sandwich layer, the uvioresistant layer is added with ultraviolet
The polyethylene layer of light absorbers.
By using above-mentioned technical proposal, uvioresistant layer makes film be not easily susceptible to ultraviolet light damage, preferably protects thin
Film.
In conclusion the utility model has the following beneficial effects: the micropore that film has allows gas to pass through well
Film, to make film that there is better permeability；Micropore is less than fogdrop diameter and is much larger than the diameter of gas molecule, thus
It hinders drop to flow through, makes film that can breathe freely well, it may have certain waterproof performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one film of the utility model embodiment.
In figure: 1, hot sealing layer；2, antistatic layer；3, sandwich layer；4, uvioresistant layer；5, corona layer；6, micropore.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment one: a kind of corona surface heat-sealing curtain coating polyethylene breathable film, as shown in Figure 1, including hot sealing layer 1,3 and of sandwich layer
Corona layer 5, sandwich layer 3 are located among hot sealing layer 1 and corona layer 5.Ventilated membrane with a thickness of 24 μm, ventilated membrane is with several micropores
6 porous breathable film.Micropore 6 is added appropriate pore additive calcium carbonate in production by film and stretches to be formed.
Film has higher stiffness by sandwich layer 3, and hot sealing layer 1 and corona layer 5 make film have heat sealability and surface respectively
Tension persistence.The micropore 6 that film has allows gas to pass through film well, so that film be made to have better gas permeability
Energy；In addition, film with a thickness of 24 μm, the thickness is more appropriate, in film toughness and the impregnable premise of other performance
Under, compared to thicker film, film is quickly penetrated conducive to gases such as carbon dioxide or oxygen, further increases film breathable
Property.
6 aperture of micropore having on ventilated membrane is 0.33 μm, and micropore 6 is less than fogdrop diameter and is much larger than the straight of gas molecule
Diameter makes film that can breathe freely well so that drop be hindered to flow through, it may have certain waterproof performance.
Micropore 6 is uniformly distributed, and keeps film everywhere air permeability effect identical；The OTR oxygen transmission rate of ventilated membrane be 5000~
7000ml/(m20.1MPa for 24 hours), the OTR oxygen transmission rate of ventilated membrane is more appropriate, both guarantee the good gas permeability of ventilated membrane,
Also it is obstructed very well to inside and outside ventilated membrane.
Sandwich layer 3 is modified poly ethylene layer, and sandwich layer 3 is the polythene blending modified layer of different densities, i.e., sandwich layer 3 is linear low
Density Polyethylene Resin LLDPE and high-density polyethylene resin HDPE blending and modifying layer, and the proportion of LLDPE and HDPE is 3.5:
1, to substantially increase the tensile strength and hardness of sandwich layer 3, the tensile strength and hardness of film are higher.
The thickness of hot sealing layer 1 and sandwich layer 3 ratio is 1:4, and the thickness ratio of corona layer 5 and sandwich layer 3 is 1:4, to make hot sealing layer
1, corona layer 5 and the performance of sandwich layer 3 are played well.
Hot sealing layer 1 is polypropylene and polyethylene blend layer, so that film more shock resistance and flexibility are more preferable.Corona layer 5
It is atactic copolymerized polypropene layer, atactic copolymerized polypropene has the preferable transparency and glossiness, improves the transparency of film
And glossiness.
There is antistatic layer 2 between hot sealing layer 1 and sandwich layer 3, antistatic layer 2 is the polyethylene layer added with antistatic agent, is added
The antistatic agent added is internal hybrid antistatic agent, and is ionic or non-ionic antistatic agent；Antistatic layer 2 has film
Anti-static function, film are more applicable in.
There is uvioresistant layer 4 between corona layer 5 and sandwich layer 3, uvioresistant layer 4 is the poly- second added with ultraviolet absorbing agent
Alkene layer, the ultraviolet absorbing agent of addition are septichen phenyl ester, benzotriazole or dihydroxy benaophenonel etc.；By too
When sunlight irradiates, uvioresistant layer 4 makes film be not easily susceptible to ultraviolet light damage, preferably protective film.
Embodiment two: a kind of corona surface heat-sealing curtain coating polyethylene breathable film, the difference between this embodiment and the first embodiment lies in:
The micropore having on film is bellmouth, is formed by laser processing, and the osculum end diameter of micropore and big opening end diameter difference
For 0.25 μm and 0.35 μm, the osculum end of micropore and big opening end are located at corona layer and hot sealing layer.The vegetables of film inner packing,
Products such as fruit can be from breathing freely from inside to outside well, and the impurity in outside air is then less susceptible to enter in film from outer, from
And making the effect of thin film packaging products more preferable, product preferably keeps quality.
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 (6)
1. a kind of corona surface heat-sealing curtain coating polyethylene breathable film, it is characterized in that: including hot sealing layer (1), sandwich layer (3) and corona layer
(5), the sandwich layer (3) is located at hot sealing layer (1) and corona layer (5) is intermediate, and the sandwich layer (3) is modified poly ethylene layer, and described
Sandwich layer (3) is the polythene blending modified layer of different densities, and the ventilated membrane is the porous breathable film with several micropores (6).
2. a kind of corona surface heat-sealing curtain coating polyethylene breathable film according to claim 1, it is characterized in that: the hot sealing layer
(1) and the thickness ratio of sandwich layer (3) is 1:3.5~4.5, and the thickness ratio of the corona layer (5) and sandwich layer (3) is 1:3.5~4.5.
3. a kind of corona surface heat-sealing curtain coating polyethylene breathable film according to claim 1, it is characterized in that: on the ventilated membrane
Micropore (6) aperture having is 0.3~0.35 μm.
4. a kind of corona surface heat-sealing curtain coating polyethylene breathable film according to claim 1 or 3, it is characterized in that: described ventilative
The OTR oxygen transmission rate of film is 5000~7000ml/(m20.1MPa for 24 hours).
5. a kind of corona surface heat-sealing curtain coating polyethylene breathable film according to claim 1, it is characterized in that: the hot sealing layer
(1) antistatic layer (2) are equipped between sandwich layer (3), the antistatic layer (2) is the polyethylene layer added with antistatic agent.
6. a kind of corona surface heat-sealing curtain coating polyethylene breathable film according to claim 1, it is characterized in that: the corona layer
(5) uvioresistant layer (4) are equipped between sandwich layer (3), the uvioresistant layer (4) is the poly- second added with ultraviolet absorbing agent
Alkene layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821091399.9U CN209141613U (en) | 2018-07-10 | 2018-07-10 | A kind of corona surface heat-sealing curtain coating polyethylene breathable film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821091399.9U CN209141613U (en) | 2018-07-10 | 2018-07-10 | A kind of corona surface heat-sealing curtain coating polyethylene breathable film |
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| CN209141613U true CN209141613U (en) | 2019-07-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112537109A (en) * | 2020-10-30 | 2021-03-23 | 永新股份（黄山）包装有限公司 | High-breathability antistatic film for medical protective clothing and preparation method thereof |
| CN114142170A (en) * | 2021-10-22 | 2022-03-04 | 浙江华正能源材料有限公司 | Puncture-resistant electrolyte-resistant cast polypropylene film, aluminum plastic film and application thereof |
-
2018
- 2018-07-10 CN CN201821091399.9U patent/CN209141613U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112537109A (en) * | 2020-10-30 | 2021-03-23 | 永新股份（黄山）包装有限公司 | High-breathability antistatic film for medical protective clothing and preparation method thereof |
| CN114142170A (en) * | 2021-10-22 | 2022-03-04 | 浙江华正能源材料有限公司 | Puncture-resistant electrolyte-resistant cast polypropylene film, aluminum plastic film and application thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230814 Address after: 200000 floors 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. |
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| TR01 | Transfer of patent right |