CN207291200U - A kind of environment-friendly type composite membrane - Google Patents
A kind of environment-friendly type composite membrane Download PDFInfo
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- CN207291200U CN207291200U CN201721143534.5U CN201721143534U CN207291200U CN 207291200 U CN207291200 U CN 207291200U CN 201721143534 U CN201721143534 U CN 201721143534U CN 207291200 U CN207291200 U CN 207291200U
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Abstract
A kind of environment-friendly type composite membrane is the utility model is related to, the environment-friendly type composite membrane includes Biaxially oriented polypropylene layer, polypropylene tack coat and the cast polypropylene layer being bonded successively.Three layers of precoat, tack coat and the hot sealing layer of composite membrane described in the utility model are all made of polypropylene, and without using flexible packaging industry adhesive of the prior art, you can ensure that there is higher bond strength between each layer and integral strength is stablized.Convenient recycling at the same time, can recycle, reduce exhaust emission, environmentally protective.
Description
Technical field
It the utility model is related to technical field of soft package, more particularly to a kind of environment-friendly type composite membrane.
Background technology
Flexible packaging industry at present, it is main using the compound technique being integrally formed of type raw material is not had to, its main feature is that taking length
Mend short, play the speciality of different raw material, meet the needs of packaging.But most of composite membranes are after compound, it is difficult to be subject to
Distinguish and recycle, and most of plastic film is all difficult degraded, and the later stage is carried out often through the mode of burning or landfill
Processing, brings environment significant pollution.
In the prior art using, except being not easy to recycle, being further included the drawbacks of film forming for composite without material：It is compound strong
Spend bad, it is necessary to rely on adhesive.It is compound main by the way of dry type is compound between difference in functionality layer in the prior art, than
Such as BOPP/CPP structures, that is, high tensile, impact strength, the rigid and good transparency that BOPP has are comprehensively utilized, with
And CPP have it is transparent it is good, be easy to the features such as heat sealing；The compound mode of generally use dry type, passes through adhesive for polyurethane
The two bonding is integrally formed.But the introducing of dry multiple adhesive, had both brought the wholesomeness risk of dissolvent residual, also to final packaging
The processing of discarded object brings separated difficulty, is unfavorable for environmental protection.
Utility model content
In view of problems of the prior art, the purpose of this utility model is that a kind of environment-friendly type easy to recycling of design
Composite membrane, is made of one species material but the Film laminated with different performance, and convenient recycling, can recycle, reduce
Waste pollution.
For this purpose, the utility model adopts the following technical solution：
The utility model provides a kind of environment-friendly type composite membrane, and the environment-friendly type composite membrane includes the two-way drawing being bonded successively
Stretched polypropylene layer, polypropylene tack coat and cast polypropylene layer.
Preferably, the thickness of the environment-friendly type composite membrane is 40~150 μm.
Preferably, the thickness ratio of the Biaxially oriented polypropylene layer, polypropylene layer and cast polypropylene layer is 1:(0.15~
2):(0.25~4) such as 1:0.15:1、1:1:1、1:0.67:2、1:1.5:1.5 or 1:2:3 etc..The utility model passes through setting
Thickness ratio between each layer so that each layer gives full play to respective function, make use of the synergistic effect between each layer so that composite membrane is not
Only environmental protection also ensures the comprehensive performance of composite membrane, and has universality, and different flexible packages can be met to composite film material performance
Individual requirement.
Preferably, the thickness of the Biaxially oriented polypropylene layer be 15~60 μm, such as 15 μm, 18 μm, 20 μm, 22 μm,
25 μm, 28 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm or 60 μm etc..
Preferably, the thickness of the bonding polypropylene layer be 10~30 μm, such as 10 μm, 12 μm, 15 μm, 18 μm, 20 μm,
22 μm, 25 μm, 28 μm or 30 μm etc..
Preferably, the thickness of the cast polypropylene layer be 15~60 μm, such as 15 μm, 18 μm, 20 μm, 22 μm, 25 μm,
28 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm or 60 μm etc..
The preparation method of environment-friendly type composite membrane described in the utility model can be：Prepared by the mode for extruding compound.Will
The heating of polypropylene binding resin melts and extrudes to obtain intermediate layer, as tack coat, then by bidirectional stretching polypropylene film with flowing
Prolong the two sides that polypropylene film is bonded in middle polypropylene tack coat respectively.
When film in the utility model is used to process flexible package, Biaxially oriented polypropylene layer is the outer layer surface bed of material, its physics
Stability, mechanical strength, air-tightness are preferable, and transparency and glossiness are higher, tough and hard wear resistant, can be printed as needed or
Do not print.The flexible package sealed for needs, cast polypropylene layer can need to select different heat-sealings as hot sealing layer according to product
The model of temperature.Three layers of precoat, tack coat and the hot sealing layer of composite membrane described in the utility model are all made of polypropylene, and
And without using flexible packaging industry adhesive of the prior art, you can ensure that there is higher bond strength and entirety between each layer
Intensity stabilization.Convenient recycling at the same time, can recycle, reduce exhaust emission, environmentally protective.
It should also be noted that, in the utility model, term " comprising " or its any other variant are intended to non-
It is exclusive to include, so that process, method, article or equipment including a series of elements not only include those key elements,
But also including other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some key elements.In the absence of more restrictions, the key element limited by sentence " including ... ", it is not excluded that including described
Also there are other identical element in the process of key element, method, article or equipment.
Compared with prior art, the utility model at least has the advantages that：
(1) three layers of the precoat of composite membrane described in the utility model, tack coat and hot sealing layer are all made of polypropylene, and
And without using flexible packaging industry adhesive of the prior art, you can ensure that there is higher bond strength and entirety between each layer
Intensity stabilization.Convenient recycling at the same time, can recycle, reduce exhaust emission, environmentally protective.
(2) the utility model is by setting thickness ratio between each layer so that each layer gives full play to respective function, make use of each
Synergistic effect between layer so that not only environmental protection also ensures the comprehensive performance of composite membrane to composite membrane, and has universality, can be full
Individual requirement of the foot difference flexible package to composite film material performance.
Brief description of the drawings
Fig. 1 is the cross-sectional view of the utility model embodiment composite membrane
The mark in the figure shows：1：Biaxially oriented polypropylene layer；2：Polypropylene tack coat；3：Cast polypropylene layer
Embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.It is but following
Example be only the utility model simple example, not represent or limit the utility model rights protection scope, this reality
Claims are subject to new protection domain.
Embodiment 1
A kind of food packaging environment-friendly type composite membrane as shown in Figure 1, thickness are 70 μm, are 18 by thickness ratio:12:40
Biaxially oriented polypropylene layer 1, polypropylene tack coat 2 and cast polypropylene layer 3 are bonded composition successively.
Embodiment 2
A kind of Key works Drug packing as shown in Figure 1 environment-friendly type composite membrane, thickness are 95 μm, are 20 by thickness ratio:15:60
Biaxially oriented polypropylene layer 1, polypropylene tack coat 2 and cast polypropylene layer 3 are bonded composition successively.
Embodiment 3
A kind of toy packaging as shown in Figure 1 environment-friendly type composite membrane, thickness are 50 μm, are 18 by thickness ratio:12:20
Biaxially oriented polypropylene layer 1, polypropylene tack coat 2 and cast polypropylene layer 3 are bonded composition successively.
Embodiment 4
A kind of environment-friendly type composite membrane as shown in Figure 1, thickness are 40 μm, by Biaxially oriented polypropylene layer 1 15 μm thick, thickness
10 μm of polypropylene tack coat 2 and cast polypropylene layer 3 15 μm thick are bonded composition successively.
Embodiment 5
A kind of environment-friendly type composite membrane as shown in Figure 1, thickness are 150 μm, by thick 60 μm of Biaxially oriented polypropylene layer 1,
Polypropylene tack coat 2 30 μm thick and cast polypropylene layer 3 60 μm thick are bonded composition successively.
Comparative example 1
With differing only in for embodiment 1：Polypropylene tack coat replaces with adhesive for polyurethane, passes through the compound preparation of dry type
Obtain composite membrane.
The sample of each embodiment and comparative example is taken to carry out the test of peel strength, heat seal strength.Test result is arranged in table
1。
Table 1
| Sample | Peel strength (N/15mm) | Heat seal strength (N/15mm) |
| Embodiment 1 | 1.2 | 35 |
| Embodiment 2 | 1.8 | 45 |
| Embodiment 3 | 1.0 | 20 |
| Embodiment 4 | 1.0 | 17 |
| Embodiment 5 | 2.0 | 60 |
| Comparative example 1 | 0.8 | 30 |
Table 1 shows, the peel strength of 1~5 composite membrane of embodiment is in more than 1.0N/15mm, and heat seal strength is in 17N/15mm
More than, under identical test condition, embodiment 1 is not only embodied in environmental protection compared to the advantage of comparative example 1, is also embodied in compound
In intensity.Illustrate that the utility model replaces the adhesive of the prior art by Biaxially oriented polypropylene layer by using polypropylene tack coat
It is bonded as one with cast polypropylene layer, it is not only environmentally friendly, but also improve peel strength and heat seal strength.
Applicant states that the utility model illustrates the detailed process equipment of the utility model and work by above-described embodiment
Skill flow, but the utility model is not limited to above-mentioned detailed process equipment and technological process, that is, does not mean that the utility model
Having to rely on above-mentioned detailed process equipment and technological process could implement.Person of ordinary skill in the field is it will be clearly understood that right
Any improvement of the utility model, the adding of equivalence replacement and auxiliary element to each raw material of the utility model product, specific side
Selection of formula etc., all falls within the scope of protection of the utility model and the open scope.
Claims (6)
1. a kind of environment-friendly type composite membrane, it is characterised in that the environment-friendly type composite membrane includes the biaxial stretching polypropylene being bonded successively
Alkene layer, polypropylene tack coat and cast polypropylene layer.
2. environment-friendly type composite membrane as claimed in claim 1, it is characterised in that the thickness of the environment-friendly type composite membrane for 40~
150μm。
3. environment-friendly type composite membrane as claimed in claim 1, it is characterised in that the Biaxially oriented polypropylene layer, polypropylene glue
The thickness ratio for tying layer and cast polypropylene layer is 1:(0.15~2):(0.25~4).
4. environment-friendly type composite membrane as claimed in claim 1, it is characterised in that the thickness of the Biaxially oriented polypropylene layer is 15
~60 μm.
5. environment-friendly type composite membrane as claimed in claim 1, it is characterised in that the thickness of the polypropylene tack coat is 10~30
μm。
6. environment-friendly type composite membrane as claimed in claim 1, it is characterised in that the thickness of the cast polypropylene layer is 15~60
μm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143534.5U CN207291200U (en) | 2017-09-07 | 2017-09-07 | A kind of environment-friendly type composite membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143534.5U CN207291200U (en) | 2017-09-07 | 2017-09-07 | A kind of environment-friendly type composite membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207291200U true CN207291200U (en) | 2018-05-01 |
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ID=62446379
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721143534.5U Active CN207291200U (en) | 2017-09-07 | 2017-09-07 | A kind of environment-friendly type composite membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207291200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114867603A (en) * | 2019-12-23 | 2022-08-05 | 高露洁-棕榄公司 | Recyclable package |
-
2017
- 2017-09-07 CN CN201721143534.5U patent/CN207291200U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114867603A (en) * | 2019-12-23 | 2022-08-05 | 高露洁-棕榄公司 | Recyclable package |
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