CN201942109U - Easily-torn cover film - Google Patents
Easily-torn cover film Download PDFInfo
- Publication number
- CN201942109U CN201942109U CN2010205171102U CN201020517110U CN201942109U CN 201942109 U CN201942109 U CN 201942109U CN 2010205171102 U CN2010205171102 U CN 2010205171102U CN 201020517110 U CN201020517110 U CN 201020517110U CN 201942109 U CN201942109 U CN 201942109U
- Authority
- CN
- China
- Prior art keywords
- layer
- low density
- density polyethylene
- weathering
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000013039 cover film Substances 0.000 title abstract 3
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 21
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000005030 aluminium foil Substances 0.000 claims abstract description 8
- 229920000728 polyester Polymers 0.000 claims abstract description 4
- 230000004888 barrier function Effects 0.000 claims description 18
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract description 8
- 230000035699 permeability Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 abstract 13
- 239000012793 heat-sealing layer Substances 0.000 abstract 2
- 239000010408 film Substances 0.000 abstract 1
- 229920002635 polyurethane Polymers 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000003570 air Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
The utility model discloses an easily-torn cover film, which comprises a heat-sealing layer, an easy-stripped layer, an obstructing layer, a bonding layer and a weathering resisting layer disposed successively; wherein the heat-sealing layer is an ethylene-vinyl acetate copolymer film layer made by modifying low density polyethylene and metallocene low density polyethylene; the easily-stripped layer is a low density polyethylene layer; the obstructing layer is a soft aluminium foil layer; the bonding layer is a poly ester type polyurethane layer; and the weathering resisting layer is a polyester layer. The easily-torn cover film of the utility model achieves excellent comprehensive performances including easily-stripped performance, sealing performance and permeability; and is especially suitable for various containers.
Description
Technical field
The utility model relates to the packaging cover field, particularly a kind of Easy tearing lid film, and it is the heat-sealable plastic sheeting that is contained in plastic covering vessel port on the plastic container.
Background technology
At present, have on a kind of opening that is encapsulated in plastic container 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 container, and the gas that the material in the container gives out can enter in the ambient air through heat-sealing film by actv., 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 bond 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, and the gas that can not give out when the material in the container behind the involution enters in the ambient air;
3, hot sealing layer material antipollution heat-sealing effect is bad, causes leakage behind the involution, gas leakage serious;
4, packing bonnet diaphragm unfairness causes the sense organ of the packing of product poor.
The utility model content
For overcoming deficiency of the prior art, the purpose of this utility model is to provide a kind of excellent combination property, particularly is fit to multiple container, easy stripping performance, sealing property, permeability to air Easy tearing lid film preferably.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the utility model has adopted following technical scheme:
A kind of Easy tearing lid film, it comprises the hot sealing layer that sets gradually, easy peel ply, barrier layer, tack coat and weathering layer, described hot sealing layer is the ethylene-vinyl acetate copolymer rete that a usefulness low density polyethylene (LDPE), metallocene low density polyethylene (LDPE) carry out modification, described easy peel ply is a low density polyethylene layer, described barrier layer is a soft attitude aluminium foil layer, and described tack coat is the PAUR layer, and described weathering layer is a polyester layer.
Further, described low density polyethylene (LDPE) and the metallocene low density polyethylene (LDPE) addition in the multi-layer co-extruded ethylene-vinyl acetate copolymer rete of described hot sealing layer all accounts for 30%～40% of total weight.
Further, low density polyethylene (LDPE) is a kind of coating polyethylene in the described easy peel ply, by extruding the compound acquisition of extruding.
Further, described 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 described easy peel ply and barrier layer is 0.5-2N/15mm.
Further, described barrier layer and weathering layer bond by tack coat, and the peel strength between described barrier layer and the weathering layer is greater than 3N/15mm.
Easy tearing lid film compared with prior art of the present utility model has the following advantages:
(1) inner layer material by 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, crystallinity can be linear, flexibility improves, and visoelasticity improves, and the penetrablility of density and aqueous vapor 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 linear low density polyethylene that barrier property is relatively poor relatively, ultra-low density polyethylene carries out modification to EVA, has strengthened the permeability to air of internal layer membrane; After the material in the container behind the involution can effectively distribute gas, enter and reach due effect in the ambient air;
(3) described 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 of easily peeling off.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification sheets, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.The specific embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the laminar texture scheme drawing of Easy tearing lid film of the present utility model.
Number in the figure explanation: 1, hot sealing layer, 2, easy peel ply, 3, barrier layer, 4, tack coat, 5, weathering layer.
The specific embodiment
Below in conjunction with drawings and Examples to the technical solution of the utility model further instruction.
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, described low density polyethylene (LDPE) and the metallocene low density polyethylene (LDPE) addition in described hot sealing layer 1 multi-layer co-extruded ethene-vinyl acetate co-extrusion rete all accounts for 30%～40% of total weight.
Further, low density polyethylene (LDPE) is a kind of coating polyethylene in the described easy peel ply 2, by extruding the compound acquisition of extruding; Extruding the compound tense resin temperature can not be above 280 ℃.
Further, described 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 described easy peel ply 2 and barrier layer 3 is 0.5-2N/15mm.
Preferably, described barrier layer 3 bonds by 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 described product structure can select for use dry type compound, extrude modes such as compound, coextrusion casting and produce.
Claims (2)
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), described easy peel ply (2) is a low density polyethylene layer, described barrier layer (3) is a soft attitude aluminium foil layer, described tack coat (4) is the PAUR layer, and described weathering layer (5) is a polyester layer.
2. Easy tearing lid film according to claim 1 is characterized in that: the thickness of described barrier layer (3) is between 7 microns-30 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205171102U CN201942109U (en) | 2010-09-06 | 2010-09-06 | Easily-torn cover film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205171102U CN201942109U (en) | 2010-09-06 | 2010-09-06 | Easily-torn cover film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201942109U true CN201942109U (en) | 2011-08-24 |
Family
ID=44469457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205171102U Expired - Lifetime CN201942109U (en) | 2010-09-06 | 2010-09-06 | Easily-torn cover film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201942109U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386788A (en) * | 2013-07-02 | 2013-11-13 | 余姚市康乐彩印包装有限公司 | Laminate-paper easy-pulling cover and preparation method thereof |
| CN104608988A (en) * | 2015-01-15 | 2015-05-13 | 上海迈高新材料科技有限公司 | Zipper pull and packaging container with zipper pull |
| CN104812680A (en) * | 2012-10-19 | 2015-07-29 | Å&R隆德纸箱公司 | flexible cover |
-
2010
- 2010-09-06 CN CN2010205171102U patent/CN201942109U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812680A (en) * | 2012-10-19 | 2015-07-29 | Å&R隆德纸箱公司 | flexible cover |
| CN104812680B (en) * | 2012-10-19 | 2016-08-17 | A&R隆德纸箱公司 | Flexible cover |
| CN103386788A (en) * | 2013-07-02 | 2013-11-13 | 余姚市康乐彩印包装有限公司 | Laminate-paper easy-pulling cover and preparation method thereof |
| CN103386788B (en) * | 2013-07-02 | 2015-12-23 | 余姚市康乐彩印包装有限公司 | A kind of film papery Easy tearing lid and preparation method thereof |
| CN104608988A (en) * | 2015-01-15 | 2015-05-13 | 上海迈高新材料科技有限公司 | Zipper pull and packaging container with zipper pull |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HAISHUN NEW PHARMACEUTICAL PACKAGING CO., Effective date: 20111130 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111130 Address after: 215213, Jiangsu Province, Wujiang City, Suzhou Fen Lake Town show Road Co-patentee after: Shanghai Haishun New Pharmaceutical Packaging Material Co., Ltd. Patentee after: Suzhou Haishun Packaging Material Co., Ltd. Address before: 215213, Jiangsu Province, Wujiang City, Suzhou Fen Lake Town show Road Patentee before: Suzhou Haishun Packaging Material Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HAISHUN NEW MEDICINAL PACKING MATERIALS C Free format text: FORMER OWNER: SHANGHAI HAISHUN NEW PHARMACEUTICAL PACKAGING CO., LTD. Effective date: 20130129 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215213 SUZHOU, JIANGSU PROVINCE TO: 215211 SUZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130129 Address after: 215211 Wujiang City, Suzhou province Fen town to show Road No. 8 Patentee after: Suzhou Haishun Packaging Material Co., Ltd. Patentee after: Shanghai Haishun New Pharmaceutical Packaging Co., Ltd. Address before: 215213, Jiangsu Province, Wujiang City, Suzhou Fen Lake Town show Road Patentee before: Suzhou Haishun Packaging Material Co., Ltd. Patentee before: Shanghai Haishun New Pharmaceutical Packaging Material Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |
|
| CX01 | Expiry of patent term |