CN213108563U - Composite film for packaging - Google Patents
Composite film for packaging Download PDFInfo
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- CN213108563U CN213108563U CN202021557961.XU CN202021557961U CN213108563U CN 213108563 U CN213108563 U CN 213108563U CN 202021557961 U CN202021557961 U CN 202021557961U CN 213108563 U CN213108563 U CN 213108563U
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Abstract
The utility model provides a composite film is used to packing relates to film packaging technical field. The utility model provides a composite film is used to packing includes polyester layer (1), printing ink layer (2), first bond line (3), aluminium foil layer (4), second bond line (5), increases tough nylon layer (6), third bond line (7), polyethylene layer (8), fourth bond line (9) and heat-sealable nylon layer (10) by top layer to nexine in proper order. In the utility model, the polyester layer (1) can play a role of moisture protection as a surface layer; the aluminum foil layer (4) is a barrier layer, so that the light can be shielded, and the barrier layer has excellent barrier property; the toughened nylon layer (6) has excellent mechanical strength and toughness; the polyethylene layer (8) has excellent toughness; the heat-sealable nylon layer (10) is used as a heat-sealing layer, so that excellent barrier property, mechanical strength and toughness can be provided for the composite film while heat sealing is ensured.
Description
Technical Field
The utility model relates to a film packaging technical field especially relates to a composite film is used to packing.
Background
In recent years, with the rapid development of the packaging industry, various composite films are widely used in the packaging of industrial products. In particular, there is an increasing demand for packaging films capable of bearing a large strength load, such as a 25kg weight of chemical raw material, which requires that the composite film for packaging has excellent toughness to bear the large strength load.
However, in the prior art, documents or patents mention packaging films having excellent toughness, and therefore, it is required to provide a packaging composite film having excellent toughness to meet the market demand.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a composite film is used to packing. The utility model provides a composite film for packing has excellent toughness.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a packaging composite film comprises polyester layer 1, printing ink layer 2, first bond line 3, aluminium foil layer 4, second bond line 5, toughening nylon layer 6, third bond line 7, polyethylene layer 8, fourth bond line 9 and heat-sealable nylon layer 10 in proper order by top layer to nexine.
Preferably, the thickness of the toughened nylon layer 6 is 12-30 μm.
Preferably, the toughening nylon layer 6 sequentially comprises a first nylon layer, a core layer and a second nylon layer from the surface layer to the inner layer.
Preferably, the thicknesses of the first nylon layer and the second nylon layer are independently 1.5-5 μm; the thickness of the core layer is 5-27 mu m.
Preferably, the thickness of the polyethylene layer 8 is 20 to 40 μm.
Preferably, the thickness of the polyester layer 1 is 12 to 30 μm.
Preferably, the heat-sealable nylon layer 10 sequentially comprises a heat-sealable nylon surface layer, a nylon core layer and a nylon surface layer from the surface layer to the inner layer.
Preferably, the thickness of the heat-sealable nylon layer 10 is 15 to 30 μm.
Preferably, the thickness of the ink layer 2 is 1 to 3 μm.
Preferably, the thickness of the aluminum foil layer 4 is 5 to 15 μm.
The utility model provides a composite film is used to packing includes polyester layer 1, printing ink layer 2, first bond line 3, aluminium foil layer 4, second bond line 5, increases tough nylon layer 6, third bond line 7, polyethylene layer 8, fourth bond line 9 and heat-sealable nylon layer 10 by top layer to nexine in proper order. In the utility model, the polyester layer 1 as the surface layer can play the role of moisture protection; the aluminum foil layer 4 is a barrier layer, can shade light, has excellent barrier performance and can effectively isolate external moisture and oxygen; the toughened nylon layer 6 has excellent mechanical strength and toughness; the polyethylene layer 8 has excellent toughness; the heat-sealable nylon layer 10 serves as a heat-sealing layer, and can provide excellent barrier property, mechanical strength and toughness for the composite film while heat sealing is guaranteed.
Just the utility model provides a composite film's thickness is thinner, for 68 ~ 148 mu m, can satisfy the market demand.
Drawings
Fig. 1 is the utility model provides a packaging composite film's structural schematic diagram, wherein, 1 is the polyester layer, 2 is the printing ink layer, 3 is first bond line, 4 is the aluminium foil layer, 5 is the second bond line, 6 is toughening nylon layer, 7 is the third bond line, 8 is the polyethylene layer, 9 is the fourth bond line, 10 is heat-sealable nylon layer.
Detailed Description
Fig. 1 is the utility model provides a packaging composite film's structural schematic diagram, as shown in fig. 1, the utility model provides a packaging composite film comprises polyester layer 1, printing ink layer 2, first bond line 3, aluminium foil layer 4, second bond line 5, increase tough nylon layer 6, third bond line 7, polyethylene layer 8, fourth bond line 9 and heat-sealable nylon layer 10 by top layer to nexine in proper order.
In the present invention, the raw materials used are all conventional commercial products in the field unless otherwise specified.
In the present invention, the thickness of the polyester layer 1 is preferably 12 to 30 μm, and more preferably 15 to 25 μm. In the present invention, the material of the polyester layer 1 is preferably matte polyethylene terephthalate. The utility model discloses in, as an embodiment, the material on top layer is extinction polyethylene terephthalate, not only can play damp-proofing effect, still has the effect of mute light dull polish.
In the present invention, the surface of the polyester layer 1 connected with the ink layer 2 is preferably corona-treated, and the present invention is right to corona-treated without special limitation, and corona treatment known to those skilled in the art is adopted. The utility model discloses a corona treatment helps the better attached to polyester layer surface in printing ink layer.
The utility model discloses in, the thickness of printing ink layer 2 is preferably 1 ~ 3 μm, and more preferably 1.5 ~ 2.5 μm. The present invention is preferably applied to a water-based ink for the ink layer.
In the present invention, the thickness of the first adhesive layer 3, the second adhesive layer 5, the third adhesive layer 7 and the fourth adhesive layer 9 is independently 2 to 5 μm. In the present invention, the material of the first adhesive layer 3, the second adhesive layer 5, the third adhesive layer 7 and the fourth adhesive layer 9 is independently preferably an aqueous acrylic adhesive or a two-component polyurethane adhesive.
In the present invention, the thickness of the aluminum foil layer 4 is preferably 5 to 15 μm, and more preferably 7 to 12 μm. The utility model discloses in to aluminium foil layer 4 is the barrier layer, not only can the shading, still has excellent separation performance.
In the utility model discloses, the thickness of toughening nylon layer 6 is preferably 12 ~ 30 μm, and more preferably 15 ~ 25 μm. The utility model discloses in, the preferred three-layer is crowded biaxial stretching nylon film altogether on nylon layer 6 that toughens, by top layer to nexine preferred first nylon layer, sandwich layer and the second nylon layer of including in proper order. In the utility model, the thickness of the first nylon layer and the second nylon layer is preferably 1.5-5 μm independently, and is further preferably 2-3 μm independently; the thickness of the core layer is preferably 5 to 27 μm, and more preferably 10 to 20 μm. The utility model discloses in, the material of first nylon layer is preferably PA6/66 copolymer, PA6/66 copolymer in PA6 and PA66 the preferred 80 ~ 90 of mass ratio: 10 to 20. The utility model discloses in, the material on second nylon layer is preferably the mixture of nylon and copolymerization nylon, the preferred 70 ~ 80 of mass ratio of nylon and copolymerization nylon: 20-30; the material of the copolymerized nylon is preferably one or more of PA6/66, PA66/6, PA54, PA1010/6, PA1010/66, PA66/610 and PA 1010/66/610. In the utility model discloses in, the material of core layer is preferably PA6/66 copolymer or PA66/6 copolymer, PA6 and PA 66's mass ratio is preferably 80 ~ 90 in the PA6/66 copolymer: 10-20, the mass ratio of PA66 to PA6 in the PA66/6 copolymer is preferably 70-80: 20 to 30. The utility model discloses in, toughened nylon layer 6 can provide excellent mechanical strength and toughness for whole composite film. In the present invention, the upper and lower surfaces of the toughened nylon layer 6 are preferably all subjected to corona treatment, and the present invention is right in that corona treatment is not specially limited, and corona treatment known to those skilled in the art is adopted. The utility model discloses a corona treatment helps toughening nylon layer better and second and third tie coat combine.
In the present invention, the thickness of the polyethylene layer 8 is preferably 12 to 30 μm, and more preferably 15 to 25 μm. In the present invention, the material of the polyethylene layer 8 is preferably linear low density polyethylene, and more preferably a biaxially oriented polyethylene film, which has excellent toughness and puncture resistance. In the present invention, the polyethylene layer 8 can further improve the toughness of the composite film.
In the utility model discloses in, but heat-seal nylon layer 10's thickness preferred is 15 ~ 30 μm, and more preferred is 20 ~ 25 μm. The utility model discloses in, but heat-seal nylon layer 10 is preferred to be three-layer coextruding biaxial stretching nylon film, but by top layer to nexine preferred in proper order includes heat-seal nylon top layer, nylon sandwich layer and nylon top layer. In the utility model, the thickness of the heat-sealable nylon surface layer is preferably 2-8 μm, and more preferably 3-7 μm; the thickness of the nylon core layer is preferably 4-26.5 micrometers, and more preferably 8-20 micrometers; the thickness of the nylon surface layer is preferably 1.5 to 3 μm, and more preferably 1.7 to 2.5 μm. The utility model discloses in, the material on heat-sealable nylon layer is preferably copolymer nylon and nylon 6's mixture, copolymer nylon and nylon 6's mass ratio is preferably 70 ~ 95: 5 to 30. In the utility model, the melting point of the copolymerized nylon is preferably 120-140 ℃; the copolymerized nylon is preferably a terpolymer nylon, more preferably a terpolymer nylon composed of three of nylon 6, nylon 66, nylon 11, nylon 12, nylon 1010 and nylon 1212, and more preferably a nylon 6/66/1010 copolymer, a nylon 6/1010/1212 copolymer or a nylon 6/66/12 copolymer as an example. In the present invention, the material of the nylon core layer and the nylon surface layer is preferably nylon 6. The utility model discloses in to but heat-seal nylon layer 10 is the heat-seal layer, when guaranteeing the heat-seal, can provide excellent separation nature, mechanical strength and toughness for the combined film again. In the present invention, the upper and lower surfaces of the heat-sealable nylon layer 10 are preferably all subjected to corona treatment, and the present invention is right to corona treatment without special limitation, and corona treatment well known to those skilled in the art may be adopted. The utility model discloses a corona treatment helps better and the fourth tie coat in heat-sealable nylon layer to combine.
The present packaging composite film is described in detail with reference to the following examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The utility model provides a packaging composite film, includes polyester layer, printing ink layer, first bond line, aluminium foil layer, second bond line, increases tough nylon layer, third bond line, polyethylene layer, fourth bond line and heat-sealable nylon layer by top layer to nexine in proper order.
The polyester layer was made of matte polyethylene terephthalate and had a thickness of 15 μm.
The ink layer is made of water-based ink, the thickness of the ink layer is 2 mu m, and the surface of the polyester layer connected with the ink layer is subjected to corona treatment.
The first bonding layer, the second bonding layer, the third bonding layer and the fourth bonding layer are all made of water-based acrylic adhesives, and the thicknesses of the first bonding layer, the second bonding layer, the third bonding layer and the fourth bonding layer are all 4 micrometers.
The thickness of the aluminium foil layer was 8 μm.
The toughened nylon layer is a three-layer co-extrusion biaxially oriented nylon film, the thickness is 25 microns, the first nylon layer, the core layer and the second nylon layer are sequentially arranged from the surface layer to the inner layer, the first nylon layer is made of PA6/66 copolymer and is 3 microns in thickness, the core layer is made of PA6/66 copolymer and is 19 microns in thickness, and the second nylon layer is made of a mixture of nylon and PA66/6 copolymer and is 3 microns in thickness. The upper and lower surfaces of the toughened nylon layer are both subjected to corona treatment.
The polyethylene layer is made of a biaxially oriented polyethylene film with a thickness of 30 μm.
But heat-seal nylon layer is three-layer co-extrusion biaxial stretching nylon film, and thickness is 30 mu m, but by top layer to nexine preferred in proper order include heat-seal nylon top layer, nylon sandwich layer and nylon top layer, and wherein, the material on heat-seal nylon top layer is nylon 6/66/1010 copolymer, and the material on nylon sandwich layer and nylon top layer is nylon 6 respectively, and the thickness on heat-seal nylon top layer is 7 mu m, and the thickness on nylon sandwich layer is 21 mu m, and the thickness on nylon top layer is 2 mu m. The upper and lower surfaces of the heat-sealable nylon layer are both subjected to corona treatment.
When the composite film is used for packaging a weight of 25kg, the problems of bag breaking and the like are not found, and the actual requirements can be met.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The composite film for packaging is characterized by comprising a polyester layer (1), an ink layer (2), a first bonding layer (3), an aluminum foil layer (4), a second bonding layer (5), a toughening nylon layer (6), a third bonding layer (7), a polyethylene layer (8), a fourth bonding layer (9) and a heat-sealable nylon layer (10) from a surface layer to an inner layer in sequence.
2. The packaging composite film according to claim 1, wherein the thickness of the toughened nylon layer (6) is 12 to 30 μm.
3. The packaging composite film according to claim 1 or 2, wherein the toughened nylon layer (6) comprises a first nylon layer, a core layer and a second nylon layer in sequence from the surface layer to the inner layer.
4. The packaging composite film according to claim 3, wherein the first nylon layer and the second nylon layer independently have a thickness of 1.5 to 5 μm; the thickness of the core layer is 5-27 mu m.
5. The packaging composite film according to claim 1, wherein the polyethylene layer (8) has a thickness of 20 to 40 μm.
6. The packaging composite film according to claim 1, wherein the thickness of the polyester layer (1) is 12 to 30 μm.
7. The packaging composite film according to claim 1, wherein the heat-sealable nylon layer (10) has a thickness of 15 to 30 μm.
8. The packaging composite film according to claim 1 or 7, wherein the heat-sealable nylon layer (10) comprises a heat-sealable nylon surface layer, a nylon core layer and a nylon surface layer in this order from the surface layer to the inner layer.
9. The packaging composite film according to claim 1, wherein the thickness of the ink layer (2) is 1 to 3 μm.
10. The packaging composite film according to claim 1, wherein the aluminum foil layer (4) has a thickness of 5 to 15 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021557961.XU CN213108563U (en) | 2020-07-30 | 2020-07-30 | Composite film for packaging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021557961.XU CN213108563U (en) | 2020-07-30 | 2020-07-30 | Composite film for packaging |
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| CN213108563U true CN213108563U (en) | 2021-05-04 |
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| CN202021557961.XU Active CN213108563U (en) | 2020-07-30 | 2020-07-30 | Composite film for packaging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113371337A (en) * | 2021-08-12 | 2021-09-10 | 北京中康顺医疗科技有限公司 | Recyclable packaging material and preparation method thereof |
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2020
- 2020-07-30 CN CN202021557961.XU patent/CN213108563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113371337A (en) * | 2021-08-12 | 2021-09-10 | 北京中康顺医疗科技有限公司 | Recyclable packaging material and preparation method thereof |
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