CN202702777U - Aluminum foil bag with low heat sealing strength and capable of being opened easily - Google Patents
Aluminum foil bag with low heat sealing strength and capable of being opened easily Download PDFInfo
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- CN202702777U CN202702777U CN 201220319074 CN201220319074U CN202702777U CN 202702777 U CN202702777 U CN 202702777U CN 201220319074 CN201220319074 CN 201220319074 CN 201220319074 U CN201220319074 U CN 201220319074U CN 202702777 U CN202702777 U CN 202702777U
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Abstract
The utility model discloses an aluminum foil bag with low heat sealing strength and capable of being opened easily. The aluminum foil bag is manufactured by a composite film in heat sealing mode. An opening is arranged at one end of the composite film, and a protection layer, an isolation layer and a heat sealing layer are respectively arranged on the composite film from top to bottom sequentially. The protection layer is a polypropylene layer or a polyethylene glycol terephthalate layer. The isolation layer is an aluminum foil layer. The heat sealing layer is of a three film structure composed of a first polyethylene film layer, a second polyethylene film layer and a modified polyethylene film layer which are extruded together. The modified polyethylene film layer is a substance blending film layer of polybutylene, ethylene-propylene copolymer and linear low density polyethylene. The heat sealing strength of the aluminum foil bag can be easily controlled in a proper range, so that the aluminum foil bag can be opened easily and can also keep good sealing performance.
Description
Technical field
The utility model relates to a kind of easy unlatching aluminium foil bag of low heat seal strength, belongs to the packaging material field.
Background technology
In the prior art, many packaging bags are made by plastic-aluminum combined composite membrane, can satisfy like this surface printing, resistance light and the requirement such as block water.But the hot sealing layer of this composite membrane generally adopts polyethylene film material, poly viscosity is very large, in case after the heat-sealing, will cause so producing between the two-layer composite membrane very strong adhesion, the consumer is difficult under general application of force state two-layer composite membrane be opened in use, therefore tearable mouth can only be beaten in packaging bag by manufacturer, but the random difficulty of tearing mouthful or tear still can appear when tearing packaging bag, and easily generation wire drawing when tearing, chip, thus the secondary pollution of medicine, food, medicine equipment caused.
In the prior art, in order to solve the problems of the technologies described above, the researcher attempts adding some in polyethylene and inconsistent other alkene of polyethylene makes blend, and then this blend is applied to the hot sealing layer of composite membrane, so that having, composite membrane easily opens preferably performance and suitable heat seal strength.CN101942133A discloses a kind of polyethylene film and preparation method thereof such as Chinese patent literature, and this film comprises: the PB Polybutene-1 of the low density polyethylene (LDPE) of 50wt%-70wt%, the LLDPE of 20wt%-30wt% and 10wt%-20wt%.This invention also provides a kind of laminated film and preparation method thereof, described laminated film comprises: surface layer, internal layer and be arranged on surface layer and internal layer between barrier layer, described surface layer is bidirectional stretching polypropylene film, described barrier layer is the polyester aluminizer, described internal layer comprises hot sealing layer at least, and described hot sealing layer comprises: the PB Polybutene-1 of the low density polyethylene (LDPE) of 50wt%-70wt%, the LLDPE of 20wt%-30wt% and 10wt%-20wt%.Although the polyethylene film that this invention provides and the heat seal strength of composite membrane are comparatively even, when the melt index of low density polyethylene (LDPE) and LLDPE was too high, the sealing-strength of composite membrane was excessive, caused sealing to be difficult to open; Low density polyethylene (LDPE) and linear density melt index are crossed when hanging down; the heat seal strength of composite membrane again can be too poor; the problem that is easy to reveal in transportation; do not reach the effect of protection product; therefore be difficult to the heat seal strength of composite membrane is controlled in the suitable scope; namely reach and easily open performance, can keep good sealing property again.
The utility model content
Technical problem to be solved in the utility model is that the heat seal strength of composite membrane of the prior art is difficult to be controlled in the suitable scope, namely reach and easily open performance, can keep again the problem of good sealing property, and then a kind of easy unlatching aluminium foil bag of low heat seal strength is provided.
In order to solve the problems of the technologies described above, the utility model provides a kind of easy unlatching aluminium foil bag of low heat seal strength, and described aluminium foil bag is made by the composite membrane heat-sealing, and the one end has opening, and described composite membrane sets gradually matcoveredn, barrier layer and hot sealing layer from top to bottom;
Described protective layer is polypropylene layer or PETG rete;
Described barrier layer is aluminium foil layer;
Described hot sealing layer is the trilamellar membrane structure that is comprised of the first polyethylene film layer, the second polyethylene film layer and modified poly ethylene rete successively from top to bottom that forms through co-extrusion;
The blend rete that described modified poly ethylene rete is polybutene, ethylene-propylene copolymer and LLDPE.
Described the first polyethylene film layer or the second polyethylene film layer are the low density polyethylene films layer.
The biaxially oriented polypropylene film layer that described polypropylene rete is sided corona treatment.
The thickness of described protective layer is 12 μ m; Described barrier layer thickness is 9 μ m; The thickness of described hot sealing layer is 50 μ m.
The thickness of described the first polyethylene film layer is that the thickness of 16 μ m, the second polyethylene film layer is that the thickness of 18 μ m and modified poly ethylene rete is 16 μ m.
Described composite membrane also is provided with enhancement layer, and described enhancement layer is between described hot sealing layer and barrier layer, and described enhancement layer is the nylon rete.
Between described protective layer and barrier layer, also be provided with printed layers.
The edge sealing of an end relative with described opening is curved.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) the easy unlatching aluminium foil bag of a kind of low heat seal strength of the present utility model, described aluminium foil bag is made by the composite membrane heat-sealing, and described composite membrane sets gradually matcoveredn, barrier layer and hot sealing layer from top to bottom; Wherein, described hot sealing layer is the trilamellar membrane structure that is comprised of the first film layer, the second film layer and modified poly ethylene rete successively from top to bottom that forms through co-extrusion, above-mentioned setting makes the heat seal strength of aluminium foil bag be easy to be controlled in the suitable scope, namely reach and easily open performance, can keep good sealing property again, even lamination appears in the modified poly ethylene layer, the first polyethylene film layer, the second polyethylene film layer also can produce sealing function in layering place, make composite membrane have good sealing effectiveness.
(2) the easy unlatching aluminium foil bag of low heat seal strength of the present utility model is further defined the thickness major effect adhesion firmness between layers of each rete to the thickness of protective layer, barrier layer and the hot sealing layer of composite membrane.The thickness of protective layer described in the aluminum foil sealing film described in the utility model is that 12 μ m, described barrier layer thickness are that the thickness of 9 μ m, described hot sealing layer is when being 50 μ m; have best adhesion firmness between each layer of composite membrane for preparing, and through still not producing the phenomenon of layering or splitting after long-term the use between each layer.
(3) the easy unlatching aluminium foil bag of low heat seal strength of the present utility model, thickness to the hot sealing layer of composite membrane is further defined, the thickness of described the first polyethylene film is that the thickness of 16 μ m, the second polyethylene film layer is that the thickness of 18 μ m and modified poly ethylene rete is 16 μ m, and the hot sealing layer of aluminium foil bag described in the utility model like this has best high temperature resistant or low temperature resistant, barrier property and easily opens performance.
(4) the easy unlatching aluminium foil bag of low heat seal strength of the present utility model, described composite membrane also is provided with enhancement layer, and described enhancement layer is between hot sealing layer and barrier layer, and described enhancement layer is polyamide laminate film, thereby has improved the mechanical strength of composite membrane.
Description of drawings
Fig. 1 is the structural representation of composite membrane described in the utility model;
Fig. 2 is the structural representation of the composite membrane with printed layers described in the utility model;
Fig. 3 is the floor map of aluminium foil bag described in the utility model;
Reference numeral:
The 1-protective layer; The 2-barrier layer; 3-the first polyethylene film layer; 4-the second polyethylene film layer; 5-modified poly ethylene rete; The 6-enhancement layer; The 7-printed layers; The 8-edge sealing; The 9-opening.
The specific embodiment
The utility model will be further described below in conjunction with embodiment, but should be noted that these embodiment only are used for method of the present utility model is described, and scope of the present utility model can not be confined to this.
The below will the utility model will be further described by specific embodiment.
A kind of easy unlatching aluminium foil bag of low heat seal strength, described aluminium foil bag is made by the composite membrane heat-sealing, the one end has opening 9, its excess-three end has edge sealing 8 linearly, described composite membrane sets gradually matcoveredn 1 from top to bottom, barrier layer 2 and hot sealing layer, described protective layer 1 is the PETG rete of 12 μ m for thickness, described barrier layer 2 is the aluminium foil layer of 9 μ m for thickness, described hot sealing layer is that three-layer co-extruded method makes, the thickness of described hot sealing layer is 50 μ m, and described hot sealing layer is to be the first polyethylene film layer 3 of 16 μ m successively by thickness from top to bottom, thickness is the trilamellar membrane structure of the second polyethylene film layer 4 of 18 μ m and modified poly ethylene rete 5 compositions that thickness is 16 μ m;
Wherein, described the first polyethylene film layer 3 and described the second polyethylene film layer 4 are the low density polyethylene films layer, and described modified poly ethylene rete 5 is the blend rete of polybutene, ethylene-propylene copolymer and LLDPE.
A kind of easy unlatching aluminium foil bag of low heat seal strength, described aluminium foil bag is made by the composite membrane heat-sealing, the one end has opening 9, its excess-three end has edge sealing 8, the edge sealing 8 of an end relative with described opening 9 is curved, the edge sealing 8 at all the other two ends linearly, described composite membrane sets gradually matcoveredn 1 from top to bottom, barrier layer 2 and hot sealing layer, described protective layer 1 is the PETG rete of 12 μ m for thickness, described barrier layer 2 is the aluminium foil layer of 30 μ m for thickness, described hot sealing layer is that three-layer co-extruded method makes, the thickness of described hot sealing layer is 30 μ m, and described hot sealing layer is to be the first polyethylene film layer 3 of 12 μ m successively by thickness from top to bottom, thickness is the trilamellar membrane structure of the trilamellar membrane structure of the second polyethylene film layer 4 of 16 μ m and modified poly ethylene rete 5 compositions that thickness is 12 μ m;
Wherein, described the first polyethylene film layer 3 is the low density polyethylene films layer, and described the second polyethylene film layer 4 is the LLDPE rete, and described modified poly ethylene rete 5 is the blend rete of polybutene, ethylene-propylene copolymer and LLDPE.
A kind of easy unlatching aluminium foil bag of low heat seal strength, described aluminium foil bag is made by the composite membrane heat-sealing, the one end has opening 9, its excess-three end has edge sealing 8, the edge sealing 8 of an end relative with described opening 9 is curved, the edge sealing 8 at all the other two ends linearly, described composite membrane sets gradually matcoveredn 1 from top to bottom, barrier layer 2 and hot sealing layer, described protective layer 1 is the polypropylene rete of 18 μ m for thickness, described barrier layer 2 is the aluminium foil layer of 20 μ m for thickness, described hot sealing layer is that three-layer co-extruded method makes, the thickness of described hot sealing layer is 70 μ m, and described hot sealing layer is to be the first polyethylene film layer 3 of 20 μ m successively by thickness from top to bottom, thickness is the trilamellar membrane structure of the trilamellar membrane structure of the second polyethylene film layer 4 of 30 μ m and modified poly ethylene rete 5 compositions that thickness is 20 μ m;
Wherein, described the first polyethylene film layer 3 is the LLDPE rete, and described the second polyethylene film layer 4 is the low density polyethylene films layer, and described modified poly ethylene rete 5 is the blend rete of polybutene, ethylene-propylene copolymer and LLDPE.
A kind of easy unlatching aluminium foil bag of low heat seal strength, described aluminium foil bag is made by the composite membrane heat-sealing, the one end has opening 9, its excess-three end has edge sealing 8, the edge sealing 8 of an end relative with described opening 9 is curved, the edge sealing 8 at all the other two ends linearly, described composite membrane sets gradually matcoveredn 1 from top to bottom, barrier layer 2, enhancement layer 6 and hot sealing layer, described protective layer 1 is the biaxially oriented polypropylene film layer of the sided corona treatment of 18 μ m for thickness, described barrier layer 2 is 9 μ m for thickness, described hot sealing layer is that three-layer co-extruded method makes, the thickness of described hot sealing layer is 70 μ m, and described hot sealing layer is to be the first polyethylene film layer 3 of 20 μ m successively by thickness from top to bottom, thickness is the trilamellar membrane structure of the second polyethylene film layer 4 of 30 μ m and modified poly ethylene rete 5 compositions that thickness is 20 μ m;
Wherein, described the first polyethylene film layer 3 and described the second polyethylene film layer 4 are the low density polyethylene films layer, and described modified poly ethylene rete 5 is the blend rete of polybutene, ethylene-propylene copolymer and LLDPE.
A kind of easy unlatching aluminium foil bag of low heat seal strength, described aluminium foil bag is made by the composite membrane heat-sealing, the one end has opening 9, its excess-three end has edge sealing 8, the edge sealing 8 of an end relative with described opening 9 is curved, the edge sealing 8 at all the other two ends linearly, described composite membrane sets gradually matcoveredn 1 from top to bottom, printed layers 7, barrier layer 2, enhancement layer 6 and hot sealing layer, described protective layer 1 is the PETG rete of 12 μ m for thickness, described barrier layer 2 is the aluminium foil layer of 7 μ m for thickness, described enhancement layer is that thickness is 15 μ m nylon retes, described hot sealing layer is that three-layer co-extruded method makes, the thickness of described hot sealing layer is 30 μ m, and described hot sealing layer is to be the first polyethylene film layer 3 of 12 μ m successively by thickness from top to bottom, thickness is the trilamellar membrane structure of the second polyethylene film layer 4 of 16 μ m and modified poly ethylene rete 5 compositions that thickness is 12 μ m;
Wherein, described the first polyethylene film layer 3 and described the second polyethylene film layer 4 are the low density polyethylene films layer, and described modified poly ethylene rete 5 is the blend rete of polybutene, ethylene-propylene copolymer and LLDPE.
Test case
The evaluation Example of heat seal strength
Measure the heat seal strength of the aluminium foil bag of embodiment 1-5 by national standard QB/T2358, the heat seal strength of the aluminium foil bag sealing of test result embodiment 1-5 is in the 10-20N/15mm scope, the heat seal strength of hence one can see that aluminium foil bag is easy to control in the suitable scope, has well the easily property opened.
The evaluation Example of sealing property:
Measure the sealing property of above-described embodiment 1 ~ 5 described aluminium foil bag according to the method for GB/T 15171-1994, test result is as described below.It is qualified that the aluminium foil bag of embodiment 1-5 is, and illustrates that aluminium foil has good sealing property.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (8)
1. the easy unlatching aluminium foil bag of a low heat seal strength, described aluminium foil bag is made by the composite membrane heat-sealing, and the one end has opening (9), it is characterized in that: described composite membrane sets gradually matcoveredn (1) from top to bottom, barrier layer (2) and hot sealing layer;
Described protective layer (1) is polypropylene layer or PETG rete;
Described barrier layer (2) is aluminium foil layer;
Described hot sealing layer is the trilamellar membrane structure that is comprised of the first polyethylene film layer (3), the second polyethylene film layer (4) and modified poly ethylene rete (5) successively from top to bottom that forms through co-extrusion;
Described modified poly ethylene rete (5) is the blend rete.
2. aluminium foil bag according to claim 1 is characterized in that, described the first polyethylene film layer (3) or the second polyethylene film layer (4) are the low density polyethylene films layer.
3. aluminium foil bag according to claim 1 and 2 is characterized in that, the biaxially oriented polypropylene film layer that described polypropylene rete is sided corona treatment.
4. aluminium foil bag according to claim 1 and 2 is characterized in that, the thickness of described protective layer (1) is 12 μ m; Described barrier layer (2) thickness is 9 μ m; The thickness of described hot sealing layer is 50 μ m.
5. aluminium foil bag according to claim 4 is characterized in that, the thickness of described the first polyethylene film layer (3) is that the thickness of 16 μ m, the second polyethylene film layer (4) is that the thickness of 18 μ m and modified poly ethylene rete (5) is 16 μ m.
6. aluminium foil bag according to claim 1 and 2 is characterized in that, described composite membrane also is provided with enhancement layer (6), and described enhancement layer (6) is between described hot sealing layer and barrier layer, and described enhancement layer (6) is the nylon rete.
7. aluminium foil bag according to claim 6 is characterized in that, also is provided with printed layers (7) between described protective layer (1) and barrier layer (2).
8. aluminium foil bag according to claim 1 and 2 is characterized in that, the edge sealing (8) of an end relative with described opening (9) is curved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220319074 CN202702777U (en) | 2012-07-03 | 2012-07-03 | Aluminum foil bag with low heat sealing strength and capable of being opened easily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220319074 CN202702777U (en) | 2012-07-03 | 2012-07-03 | Aluminum foil bag with low heat sealing strength and capable of being opened easily |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202702777U true CN202702777U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220319074 Expired - Lifetime CN202702777U (en) | 2012-07-03 | 2012-07-03 | Aluminum foil bag with low heat sealing strength and capable of being opened easily |
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| Country | Link |
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| CN (1) | CN202702777U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104495066A (en) * | 2014-11-24 | 2015-04-08 | 陈伟群 | Sealing film suitable for low temperature sealing |
| CN108749217A (en) * | 2018-06-01 | 2018-11-06 | 广东美士达药包材料股份有限公司 | One kind easily tearing composite membrane and preparation method thereof |
| CN109177415A (en) * | 2018-09-29 | 2019-01-11 | 浙江金石包装有限公司 | A kind of package compound film and preparation method thereof |
| CN110356087A (en) * | 2019-08-15 | 2019-10-22 | 江阴升辉包装材料有限公司 | Printable easy-to-uncover cover film with anti-fouling heat sealing layer and process thereof |
-
2012
- 2012-07-03 CN CN 201220319074 patent/CN202702777U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104495066A (en) * | 2014-11-24 | 2015-04-08 | 陈伟群 | Sealing film suitable for low temperature sealing |
| CN108749217A (en) * | 2018-06-01 | 2018-11-06 | 广东美士达药包材料股份有限公司 | One kind easily tearing composite membrane and preparation method thereof |
| CN109177415A (en) * | 2018-09-29 | 2019-01-11 | 浙江金石包装有限公司 | A kind of package compound film and preparation method thereof |
| CN110356087A (en) * | 2019-08-15 | 2019-10-22 | 江阴升辉包装材料有限公司 | Printable easy-to-uncover cover film with anti-fouling heat sealing layer and process thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
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| CX01 | Expiry of patent term |