CN105480571A - Clean stripping aluminum foil easy opening cover - Google Patents
Clean stripping aluminum foil easy opening cover Download PDFInfo
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- CN105480571A CN105480571A CN201510660322.3A CN201510660322A CN105480571A CN 105480571 A CN105480571 A CN 105480571A CN 201510660322 A CN201510660322 A CN 201510660322A CN 105480571 A CN105480571 A CN 105480571A
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- aluminium foil
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Abstract
The invention discloses an easy opening heat sealing film. The easy opening heat sealing film is prepared by 70-90% of ethylene-acrylate copolymer and 10-30% of ethylene-vinyl acetate copolymer. The heat sealing film solves such defects as high heat sealing temperature and easy generation of dead sealing, and is low in opening force and free of rupture and burrs during opening.
Description
Technical field
The present invention relates to flexible packaging industry, more specifically, relate to one and totally peel off aluminum foil openable cover.
Background technology
Traditional canned milk powder package bottle cap is made up of aluminium foil, annular iron, iron covering three part.First to pry open iron covering during unlatching, then cut open aluminium foil layer and just can get milk powder.Easily cause aluminium chip to fall in milk powder in opening process, produce and pollute; Finger is easily hurt in the corner simultaneously cutting open rear remnants, dangerous.Pollution and potential safety hazard will inevitably be made troubles to customer.
In order to solve the problem; Chinese patent literature CN103264840 discloses a kind of for pot type milk powder packaging cover; it comprises the metal cap body being provided with and getting thing hole and the aluminium foil encapsulating film getting thing hole for shutoff, and described aluminium foil encapsulating film is provided with protective cover, barrier layer and hot sealing layer from top to bottom.Described protective cover is gloss oil layer, described barrier layer is aluminium foil, described hot sealing layer on barrier layer aluminium foil, applies one deck glue again with by the film compound 170 DEG C of blowings after the metallocene PE Homogeneous phase mixing of the polybutene of 10-20%, HDPE and 20-40% of 40-60%.Above-mentionedly easily to take off in lid, make aluminum foil cover and metal cap body heat-sealing by the vinyl film of hot sealing layer, there is the advantage being convenient to seal.
But the lid of easily taking off in above-mentioned technology is deposited and be there is following problem in practice:
(1) adopt above-mentioned easily taking off to cover for time canned, heat-sealing temperature can be very high, can reach 200-250 DEG C, and energy consumption consumption is large; Temperature is too high easily to be caused " extremely sealing ", making when opening aluminum foil cover, need very large power, and film also easily breaking, and easily produces chip and drops in milk powder, pollute milk powder in disconnected process; Also can cause simultaneously and get thing difficulty.
(2) above-mentioned easily taking off is adopted to cover for time canned, after opening aluminum foil cover, can see that the heat-sealing aspect of aluminum foil cover heat-sealing aspect and metal cap body can be left a trace, there is a lot of burr, these vestiges are that the burr in the consequence totally do not peeled off, particularly crown cap can contact with arm when getting thing, in the course of time, burr can drop in milk powder, pollutes milk powder.
Summary of the invention
The object of the invention is to, solve current heat-sealing film and can not totally peel off and seal dead problem.
According to above object; first the present invention provides one totally to peel off aluminum foil openable cover; what comprise the metal cap body that is provided with and gets thing hole and get thing hole for shutoff easily takes off heat-sealing film; state aluminium foil encapsulating film and be provided with protective cover, barrier layer and hot sealing layer from top to bottom, described heat-sealing film is made up of the vinyl-acrylate copolymer of 70-90% and the ethylene-vinyl acetate copolymer of 10-30%.
Described vinyl-acrylate copolymer and the fusion index of ethylene-vinyl acetate copolymer are 2-10g/10min.
The thickness of described heat-sealing film is 10-30 μm.
Described clean stripping aluminum foil openable cover is pot type milk powder packaging cover.
The thickness of described protective cover is 1-3um; Barrier layer thickness is: 60-100um.
Described protective cover is gloss oil layer, and described barrier layer is aluminium foil.
The present invention is to solve the aluminium foil heat-sealing temperature in prior art in pot type packaging too highly easily to cause " extremely sealing ", making when opening aluminum foil cover, need very large power, and film also easily breaking, easily producing chip in disconnected process drops in milk powder, pollutes milk powder; Also can cause simultaneously and get thing difficulty.Simultaneously after opening aluminum foil cover, can see that the heat-sealing aspect of aluminum foil cover heat-sealing aspect and metal cap body can be left a trace, there is a lot of burr, these vestiges are the consequences totally do not peeled off, burr particularly on crown cap can contact with arm when getting thing, in the course of time, burr can drop in milk powder, the problem of secondary pollution milk powder.
The present invention has the following advantages:
1. can low-temperature heat-sealing, minimum heat-sealing temperature can reach 100 DEG C-120 DEG C, and crack force is little.
2. totally peel off.Vestige only can stay the hot sealing layer of aluminium foil surface, and the heat cover of metal cap body is very clean, can not leave burr vestige, avoids polluting milk powder.
Detailed description of the invention
The present invention is further described below in conjunction with specific embodiment.Unless stated otherwise, the present invention adopts reagent, equipment and method are conventional commercial reagent, equipment and the conventional method used of the art.
Embodiment 1:
A kind of aluminum foil openable cover, it comprises the metal cap body being provided with and getting thing hole and the aluminium foil encapsulating film getting thing hole for shutoff, and described aluminium foil encapsulating film is provided with protective cover, barrier layer and hot sealing layer from top to bottom.Described protective cover is thickness is 1um gloss oil layer, described barrier layer be thickness is the aluminium foil of 90um, described hot sealing layer be thickness is 10um hot sealing layer; described hot sealing layer is made up of the material of following mass ratio; the vinyl-acrylate copolymer of 80%, fusion index is 5g/min; The ethylene-vinyl acetate copolymer of 20%, fusion index is 10g/min..
The described preparation method easily taking off aluminum foil cover:
1, described metal cap body steel plate materials is made the metal cap body having and get thing hole.
2,10um is covered in the pouring of the one side of described barrier layer and seal tunic, naturally cool after chill roll, obtain hot sealing layer.The gloss oil of the another side coating 1um of barrier layer, dries at 80 DEG C again.
3, the heat cover of above-mentioned aluminium foil encapsulating film covered get on thing hole, and extend to about 3mm on crown cap, as hot edge seal width, then 100 ° in hot edge seal width aluminium foil film and metal cap body seal, obtain aluminum foil openable cover.
Embodiment 2:
A kind of aluminum foil openable cover, it comprises the metal cap body being provided with and getting thing hole and the aluminium foil encapsulating film getting thing hole for shutoff, and described aluminium foil encapsulating film is provided with protective cover, barrier layer and hot sealing layer from top to bottom.Described protective cover is thickness is 2um gloss oil layer, described barrier layer be thickness is the aluminium foil of 70um, described hot sealing layer be thickness is 15um hot sealing layer; described hot sealing layer is made up of the material of following mass ratio; the vinyl-acrylate copolymer of 70%, fusion index is 8g/min; The ethylene-vinyl acetate copolymer of 30%, fusion index is 8g/min..
The described preparation method easily taking off aluminum foil cover:
1, described metal cap body steel plate materials is made the metal cap body having and get thing hole.
2,15um is covered in the pouring of the one side of described barrier layer and seal tunic, naturally cool after chill roll, obtain hot sealing layer.The gloss oil of the another side coating 2um of barrier layer, dries at 90 DEG C again.
3, the heat cover of above-mentioned aluminium foil encapsulating film covered get on thing hole, and extend to about 4mm on crown cap, as hot edge seal width, then 120 ° in hot edge seal width aluminium foil film and metal cap body seal, obtain aluminum foil openable cover.
Embodiment 3:
A kind of aluminum foil openable cover, it comprises the metal cap body being provided with and getting thing hole and the aluminium foil encapsulating film getting thing hole for shutoff, and described aluminium foil encapsulating film is provided with protective cover, barrier layer and hot sealing layer from top to bottom.Described protective cover is thickness is 1um gloss oil layer, described barrier layer be thickness is the aluminium foil of 60um, described hot sealing layer be thickness is 20um hot sealing layer; described hot sealing layer is made up of the material of following mass ratio; the vinyl-acrylate copolymer of 90%, fusion index is 10g/min; The ethylene-vinyl acetate copolymer of 10%, fusion index is 5g/min..
The described preparation method easily taking off aluminum foil cover:
1, described metal cap body steel plate materials is made the metal cap body having and get thing hole.
2,20um is covered in the pouring of the one side of described barrier layer and seal tunic, naturally cool after chill roll, obtain hot sealing layer.The gloss oil of the another side coating 1um of barrier layer, dries at 80 DEG C again.
3, the heat cover of above-mentioned aluminium foil encapsulating film covered get on thing hole, and extend to about 4mm on crown cap, as hot edge seal width, then 150 ° in hot edge seal width aluminium foil film and metal cap body seal, obtain aluminum foil openable cover.
Embodiment 4:
A kind of aluminum foil openable cover, it comprises the metal cap body being provided with and getting thing hole and the aluminium foil encapsulating film getting thing hole for shutoff, and described aluminium foil encapsulating film is provided with protective cover, barrier layer and hot sealing layer from top to bottom.Described protective cover is thickness is 1um gloss oil layer, described barrier layer be thickness is the aluminium foil of 90um, described hot sealing layer be thickness is 20um hot sealing layer; described hot sealing layer is made up of the material of following mass ratio; the vinyl-acrylate copolymer of 90%, fusion index is 10g/min; The ethylene-vinyl acetate copolymer of 10%, fusion index is 5g/min..
The present invention also puies forward the described preparation method easily taking off aluminum foil cover much of that:
1, described metal cap body steel plate materials is made the metal cap body having and get thing hole.
2,20um is covered in the pouring of the one side of described barrier layer and seal tunic, naturally cool after chill roll, obtain hot sealing layer.The gloss oil of the another side coating 1um of barrier layer, dries at 80 DEG C again.
3, the heat cover of above-mentioned aluminium foil encapsulating film covered get on thing hole, and extend to about 5mm on crown cap, as hot edge seal width, then 170 ° in hot edge seal width aluminium foil film and metal cap body seal, obtain aluminum foil openable cover.
Embodiment 5:
A kind of aluminum foil openable cover, it comprises the metal cap body being provided with and getting thing hole and the aluminium foil encapsulating film getting thing hole for shutoff, and described aluminium foil encapsulating film is provided with protective cover, barrier layer and hot sealing layer from top to bottom.Described protective cover is thickness is 2um gloss oil layer, described barrier layer be thickness is the aluminium foil of 90um, described hot sealing layer be thickness is 15um hot sealing layer; described hot sealing layer is made up of the material of following mass ratio; the vinyl-acrylate copolymer of 85%, fusion index is 8g/min; The ethylene-vinyl acetate copolymer of 15%, fusion index is 10g/min..
The present invention also puies forward the described preparation method easily taking off aluminum foil cover much of that:
1, described metal cap body steel plate materials is made the metal cap body having and get thing hole.
2,15um is covered in the pouring of the one side of described barrier layer and seal tunic, naturally cool after chill roll, obtain hot sealing layer.The gloss oil of the another side coating 1um of barrier layer, dries at 80 DEG C again.
3, the heat cover of above-mentioned aluminium foil encapsulating film covered get on thing hole, and extend to about 5mm on crown cap, as hot edge seal width, then 180 ° in hot edge seal width aluminium foil film and metal cap body seal, obtain aluminum foil openable cover.
Further illustrate, above-mentioned five kinds of embodiment metal cap body steel plate materialses can be plain sheet, band epoxy coating iron, band polyester coatings iron and film-covered iron, save and describe it, but also belong to protection claimed range in embodiment.Simultaneously; although the present invention has carried out detailed elaboration by above-mentioned specific embodiment to it; but professional and technical personnel should be understood that done for exceeding any form and the variations in detail of claims on this basis, all belongs to the scope that the present invention will protect.
Embodiment 6 measure of merit
The present invention obtains following data by conventional test
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Whether totally peel off | Be | Be | Be | Be | Be |
| Peel off and whether occur fracture | No | No | No | No | No |
| Whether jagged after stripping | No | No | No | No | No |
| Crack force (aviation value) | 21N | 24N | 25N | 26N | 26N |
| Heat-sealing temperature DEG C | 100 | 120 | 150 | 170 | 180 |
Known through above test, not only heat-sealing temperature of the present invention is low, and peels off more clean, and impulse-free robustness, crack force is low simultaneously, there will not be fracture.
Claims (8)
1. easily take off a heat-sealing film, it is characterized in that, be made up of the vinyl-acrylate copolymer of 70-90% and the ethylene-vinyl acetate copolymer of 10-30%.
2. according to claim 1ly easily take off heat-sealing film, it is characterized in that, described vinyl-acrylate copolymer and the fusion index of ethylene-vinyl acetate copolymer are 2-10g/10min.
3. a heat-sealing film of easily taking off according to claim 1 is easily taking off the application in aluminium lid.
4. application according to claim 3, is characterized in that, the thickness of described heat-sealing film is 10-30 μm.
5. application according to claim 3, is characterized in that, described aluminium lid of easily taking off also comprises protective cover and barrier layer, and described barrier layer is between protective cover and heat-sealing film.
6. application according to claim 3, is characterized in that, described aluminium lid of easily taking off is pot type milk powder packaging cover.
7. application according to claim 5, is characterized in that, the thickness of described protective cover is 1-3um; Barrier layer thickness is: 60-100um.
8. application according to claim 5, is characterized in that, described protective cover is gloss oil layer, and described barrier layer is aluminium foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510660322.3A CN105480571A (en) | 2015-10-13 | 2015-10-13 | Clean stripping aluminum foil easy opening cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510660322.3A CN105480571A (en) | 2015-10-13 | 2015-10-13 | Clean stripping aluminum foil easy opening cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105480571A true CN105480571A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510660322.3A Pending CN105480571A (en) | 2015-10-13 | 2015-10-13 | Clean stripping aluminum foil easy opening cover |
Country Status (1)
| Country | Link |
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| CN (1) | CN105480571A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130381A (en) * | 2018-07-06 | 2019-01-04 | 黄山永新股份有限公司 | A kind of Yoghourt plastic cup sealing 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581672A (en) * | 1981-06-23 | 1983-01-07 | 東洋製罐株式会社 | Thermally sealed package which is easily unsealed |
| JPH0379342A (en) * | 1989-08-23 | 1991-04-04 | Dainippon Ink & Chem Inc | Laminate for easy release packing material |
| JP2000079956A (en) * | 1998-09-01 | 2000-03-21 | Toppan Printing Co Ltd | Lid material |
| JP2004026222A (en) * | 2002-06-25 | 2004-01-29 | Toray Ind Inc | Lid material |
| 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 |
| CN101665174A (en) * | 2009-10-21 | 2010-03-10 | 浙江金石包装有限公司 | Hot melt adhesive aluminum foil sealing film and manufacturing method thereof |
| CN103287718A (en) * | 2013-06-07 | 2013-09-11 | 浙江金石包装有限公司 | Semi-pull-lug easy-uncovering aluminum foil sealing film and preparing method thereof |
-
2015
- 2015-10-13 CN CN201510660322.3A patent/CN105480571A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581672A (en) * | 1981-06-23 | 1983-01-07 | 東洋製罐株式会社 | Thermally sealed package which is easily unsealed |
| JPH0379342A (en) * | 1989-08-23 | 1991-04-04 | Dainippon Ink & Chem Inc | Laminate for easy release packing material |
| JP2000079956A (en) * | 1998-09-01 | 2000-03-21 | Toppan Printing Co Ltd | Lid material |
| JP2004026222A (en) * | 2002-06-25 | 2004-01-29 | Toray Ind Inc | Lid material |
| 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 |
| CN101665174A (en) * | 2009-10-21 | 2010-03-10 | 浙江金石包装有限公司 | Hot melt adhesive aluminum foil sealing film and manufacturing method thereof |
| CN103287718A (en) * | 2013-06-07 | 2013-09-11 | 浙江金石包装有限公司 | Semi-pull-lug easy-uncovering aluminum foil sealing film and preparing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130381A (en) * | 2018-07-06 | 2019-01-04 | 黄山永新股份有限公司 | A kind of Yoghourt plastic cup sealing 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 |
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Application publication date: 20160413 |
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| RJ01 | Rejection of invention patent application after publication |