CN102380983A - Easy-to-peel cover film - Google Patents
Easy-to-peel cover film Download PDFInfo
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- CN102380983A CN102380983A CN2010102723365A CN201010272336A CN102380983A CN 102380983 A CN102380983 A CN 102380983A CN 2010102723365 A CN2010102723365 A CN 2010102723365A CN 201010272336 A CN201010272336 A CN 201010272336A CN 102380983 A CN102380983 A CN 102380983A
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Abstract
The invention discloses an easy-to-peel cover film, which comprises a hot sealing layer, an easy-to-peel layer, a blocking layer, a bonding layer and a weatherproof layer in sequence arrangement, wherein the hot sealing layer is an ethylene-vinyl acetate copolymer film layer modified by low-density polyethylene and metallocene low-density polyethylene, the easy-to-peel layer is a low-density polyethylene layer, the blocking layer is a soft-state aluminum foil layer, the bonding layer is a polyester type polyurethane layer, and the weatherproof layer is a polyester layer. The easy-to-peel cover film is an easy-to-peel cover film with the advantages that the integral performance is excellent, the easy-to-peel cover film is particularly suitable for various containers, and the easy-to-peel performance, the sealing performance and the ventilation performance are better.
Description
Technical field
The present invention relates to the packaging cover field, particularly a kind of Easy tearing lid film, it is contained in the plastic sheeting of plastic covering vessel port on the plastic containers for heat-sealable.
Background technology
At present; Have on a kind of opening that is encapsulated in plastic containers and the plastic sheeting of being stripped from easily; After outer aluminum plastic film is peeled off; What the internal layer hot sealing layer was still complete is welded on the plastic containers, and the gas that the material in the container gives out can effectively see through in the heat-sealing film entering surrounding air, reaches therapeutic purposes or enhancement of environment purpose.The following defective of using on the current market of general easily tore film ubiquity:
1, barrier layer and internal layer hot sealing layer adhesion strength are too high, are difficult for peeling off;
2, it is also better that internal layer hot sealing layer material hinders moist better while gas barrier property, when the gas that the material in the container behind the involution can not give out gets in the surrounding air;
3, hot sealing layer material antipollution heat-sealing effect is bad, causes leakage behind the involution, gas leakage serious;
4, packing bonnet diaphragm out-of-flatness causes the sense organ of the packing of product poor.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention is to provide a kind of excellent combination property, particularly be fit to multiple container, be prone to stripping performance, sealing property, gas permeability Easy tearing lid film preferably.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of Easy tearing lid film; It comprises the hot sealing layer that sets gradually, easy peel ply, and barrier layer, tack coat and weathering layer, said hot sealing layer are the ethylene-vinyl acetate copolymer rete that a usefulness low density polyethylene (LDPE), metallocene low density polyethylene (LDPE) carry out modification; Said easy peel ply is a low density polyethylene layer; Said barrier layer is a soft attitude aluminium foil layer, and said tack coat is the PAUR layer, and said weathering layer is a polyester layer.
Further, said low density polyethylene (LDPE) and the metallocene low density polyethylene (LDPE) addition in the multi-layer co-extruded ethylene-vinyl acetate copolymer rete of said hot sealing layer all accounts for 30%～40% of gross weight.
Further, low density polyethylene (LDPE) is a kind of coating polyethylene in the said easy peel ply, through extruding the compound acquisition of extruding.
Further, said barrier layer is a soft attitude aluminium foil, and the thickness of aluminium foil is between 7 microns-30 microns.
Further, the peel strength of said easy peel ply and barrier layer is 0.5-2N/15mm.
Further, said barrier layer and weathering layer bond through tack coat, and the peel strength between said barrier layer and the weathering layer is greater than 3N/15mm.
Easy tearing lid film compared with prior art of the present invention has the following advantages:
(1) inner layer material through the modification to ethylene-vinyl acetate copolymer (EVA resin), is effectively controlled the content of VA on selecting for use.Descend because the increase of VA content, degree of crystallinity can be linear, flexibility improves, and viscoplasticity improves, and the permeability of density and steam rises, and rigidity and softening point descend, and stress cracking resistance improves.The fusing point of EVA descends with the increase of VA content simultaneously, and modified EVA is used as the heat sealable material of good low temperature, can carry out involution by good and various containers, and the antipollution heat sealability is good;
(2) when producing inner layer material in order to increase the permeability of inner layer film, select for use density less, the LLDPE that barrier property is relatively poor relatively, ultra-low density polyethylene carries out modification to EVA, has strengthened the gas permeability of internal layer membrane; When effectively distributing gas in the back entering surrounding air, the material in the container behind the involution reaches due effect;
(3) said peel ply resin can have effective adhesive aluminium foil layer and inner layer material, and guarantee that peel strength is lower for applying the level polyethylene, reaches the desirable effect that is prone to peel off.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.The specific embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Fig. 1 is the layer structure sketch map of Easy tearing lid film of the present invention.
Label declaration among the figure: 1, hot sealing layer, 2, be prone to peel ply, 3, barrier layer, 4, tack coat, 5, weathering layer.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is further explained.
Referring to shown in Figure 1, a kind of novel Easy tearing lid film, it comprises the hot sealing layer 1 that sets gradually, easy peel ply 2, barrier layer 3, tack coat 4 and weathering layer 5 five-layer structures.
Further, said low density polyethylene (LDPE) and the metallocene low density polyethylene (LDPE) addition in said hot sealing layer 1 multi-layer co-extruded ethene-vinyl acetate co-extrusion rete all accounts for 30%～40% of gross weight.
Further, low density polyethylene (LDPE) is a kind of coating polyethylene in the said easy peel ply 2, through extruding the compound acquisition of extruding; Extruding the compound tense resin temperature can not be above 280 ℃.
Further, said barrier layer 3 is a soft attitude aluminium foil, and the thickness of aluminium foil is between 7 microns-30 microns.
Preferably, the peel strength of said easy peel ply 2 and barrier layer 3 is 0.5-2N/15mm.
Preferably, said barrier layer 3 bonds through tack coat 4 with weathering layer 5, and the peel strength between barrier layer 3 and the weathering layer 5 is greater than 3N/15mm;
Further, the processing mode of said product structure can select for use dry type compound, extrude modes such as compound, coextrusion casting and produce.
Claims (3)
1. Easy tearing lid film; It is characterized in that: comprise the hot sealing layer (1) that sets gradually, easy peel ply (2), barrier layer (3), tack coat (4) and weathering layer (5), said hot sealing layer (1) are the ethylene-vinyl acetate copolymer rete that a usefulness low density polyethylene (LDPE) and metallocene low density polyethylene (LDPE) carry out modification; Said easy peel ply (2) is a low density polyethylene layer; Said barrier layer (3) is a soft attitude aluminium foil layer, and said tack coat (4) is the PAUR layer, and said weathering layer (5) is a polyester layer.
2. Easy tearing lid film according to claim 1 is characterized in that: said low density polyethylene (LDPE) and metallocene low density polyethylene (LDPE) all account for 30%～40% of gross weight in the addition of said hot sealing layer (1).
3. according to claim 1 or 3 described Easy tearing lid films, it is characterized in that: the thickness of said barrier layer (3) is between 7 microns-30 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102723365A CN102380983A (en) | 2010-09-06 | 2010-09-06 | Easy-to-peel cover film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102723365A CN102380983A (en) | 2010-09-06 | 2010-09-06 | Easy-to-peel cover film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102380983A true CN102380983A (en) | 2012-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102723365A Pending CN102380983A (en) | 2010-09-06 | 2010-09-06 | Easy-to-peel cover film |
Country Status (1)
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| CN (1) | CN102380983A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057662A (en) * | 2014-06-25 | 2014-09-24 | 金石包装（嘉兴）有限公司 | Laminating aluminum plastic composite membrane with patterns on inner surface and production method thereof |
| CN105342850A (en) * | 2015-11-13 | 2016-02-24 | 重庆莱美药业股份有限公司 | Single-needle medicine mixing device, hard dual joint and infusion soft bag |
| CN106366824A (en) * | 2016-08-30 | 2017-02-01 | 湖州金洁实业有限公司 | Easy-to-tear cover aluminum foil for food packaging |
| CN106380960A (en) * | 2016-08-30 | 2017-02-08 | 湖州金洁实业有限公司 | Easy-tear cover aluminium foil for food package and preparation technology of easy-tear cover aluminium foil |
| CN108238366A (en) * | 2018-01-12 | 2018-07-03 | 惠州宝柏包装有限公司 | A kind of layer-stepping openable cover film |
| CN110328943A (en) * | 2019-06-05 | 2019-10-15 | 江苏隆晟医药包装材料有限公司 | Open-type high sealing plastic-aluminum epiphragma |
| CN111286736A (en) * | 2018-12-10 | 2020-06-16 | 广州方邦电子股份有限公司 | Preparation method of metal foil with carrier |
| CN114407453A (en) * | 2021-12-14 | 2022-04-29 | 江阴宝柏新型包装材料有限公司 | Low-temperature heat-sealing easy-cutting sealing film and preparation method thereof |
| CN115195166A (en) * | 2022-07-09 | 2022-10-18 | 浙江多凌药用包装材料有限公司 | Easy-to-tear polyvinyl chloride-polyvinylidene chloride-polyethylene compounding process |
| CN115320188A (en) * | 2022-10-17 | 2022-11-11 | 宁波时代铝箔科技股份有限公司 | Tearable packaging material, preparation method thereof and packaging container |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1300238A2 (en) * | 2001-09-27 | 2003-04-09 | Flexopack S A | Multilayer packaging film and process |
| CN201372022Y (en) * | 2008-12-05 | 2009-12-30 | 江阴宝柏包装有限公司 | Easily torn aluminum-plastic composite packing film for suppository |
-
2010
- 2010-09-06 CN CN2010102723365A patent/CN102380983A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1300238A2 (en) * | 2001-09-27 | 2003-04-09 | Flexopack S A | Multilayer packaging film and process |
| CN201372022Y (en) * | 2008-12-05 | 2009-12-30 | 江阴宝柏包装有限公司 | Easily torn aluminum-plastic composite packing film for suppository |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057662A (en) * | 2014-06-25 | 2014-09-24 | 金石包装（嘉兴）有限公司 | Laminating aluminum plastic composite membrane with patterns on inner surface and production method thereof |
| CN105342850A (en) * | 2015-11-13 | 2016-02-24 | 重庆莱美药业股份有限公司 | Single-needle medicine mixing device, hard dual joint and infusion soft bag |
| CN105342850B (en) * | 2015-11-13 | 2019-10-18 | 重庆莱美药业股份有限公司 | Single needle medicine mixer, hard double nip and transfusion flexible bag |
| CN106366824A (en) * | 2016-08-30 | 2017-02-01 | 湖州金洁实业有限公司 | Easy-to-tear cover aluminum foil for food packaging |
| CN106380960A (en) * | 2016-08-30 | 2017-02-08 | 湖州金洁实业有限公司 | Easy-tear cover aluminium foil for food package and preparation technology of easy-tear cover aluminium foil |
| CN106380960B (en) * | 2016-08-30 | 2019-03-12 | 湖州金洁实业有限公司 | A kind of food packaging Easy tearing lid aluminium foil and its preparation process |
| CN108238366A (en) * | 2018-01-12 | 2018-07-03 | 惠州宝柏包装有限公司 | A kind of layer-stepping openable cover film |
| CN111286736A (en) * | 2018-12-10 | 2020-06-16 | 广州方邦电子股份有限公司 | Preparation method of metal foil with carrier |
| CN110328943A (en) * | 2019-06-05 | 2019-10-15 | 江苏隆晟医药包装材料有限公司 | Open-type high sealing plastic-aluminum epiphragma |
| CN114407453A (en) * | 2021-12-14 | 2022-04-29 | 江阴宝柏新型包装材料有限公司 | Low-temperature heat-sealing easy-cutting sealing film and preparation method thereof |
| CN115195166A (en) * | 2022-07-09 | 2022-10-18 | 浙江多凌药用包装材料有限公司 | Easy-to-tear polyvinyl chloride-polyvinylidene chloride-polyethylene compounding process |
| CN115320188A (en) * | 2022-10-17 | 2022-11-11 | 宁波时代铝箔科技股份有限公司 | Tearable packaging material, preparation method thereof and packaging container |
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Application publication date: 20120321 |