CN212219537U - Multilayer high temperature resistant stretch film - Google Patents
Multilayer high temperature resistant stretch film Download PDFInfo
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- CN212219537U CN212219537U CN202020585360.3U CN202020585360U CN212219537U CN 212219537 U CN212219537 U CN 212219537U CN 202020585360 U CN202020585360 U CN 202020585360U CN 212219537 U CN212219537 U CN 212219537U
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Abstract
The utility model relates to a multilayer high temperature resistant stretch film relates to the stretch film field, including the polyethylene layer, the polyethylene layer includes first polyethylene layer and second polyethylene layer, first polyethylene layer with be provided with the nylon layer between the second polyethylene layer, the nylon layer with between the first polyethylene layer the nylon layer with all be provided with the tie coat between the second polyethylene layer. The utility model discloses have the tensile membrane of reinforcing slight effect under the high temperature condition, effectively avoid tensile membrane fracture or too big tensile deformation under the high temperature condition.
Description
Technical Field
The utility model belongs to the technical field of the stretch film and specifically relates to a multilayer high temperature resistant stretch film is related to.
Background
The stretched film is called as an ideal food packaging film, is formed by coating PVA added with nano inorganic matter on a polyethylene stretched film, and then printing and compounding, and solves the technical bottleneck of poor barrier property of the prior three-layer polyethylene co-extrusion packaging stretched film on the premise of not greatly increasing the cost. The biaxially oriented polypropylene film is prepared by co-extruding polypropylene particles to form a sheet and then stretching the sheet in longitudinal and transverse directions. Because of the orientation of the stretching molecules, the stretched film has better physical stability, mechanical strength and air tightness, higher transparency and glossiness, toughness and wear resistance. The barrier property of the multilayer packaging film is obviously superior to that of an EVOH five-layer co-extrusion stretching film, the packaging cost is greatly reduced, the requirements of packaged objects on all quality of aseptic packaging can be met, the aseptic packaging cost of food processing enterprises is greatly reduced, the technical bottleneck that the barrier property of the existing three-layer polyethylene co-extrusion packaging stretching film is poor is solved, and the multilayer packaging film can be used for packaging beverages, fruit juice, milk, soy sauce vinegar and the like. The stretched film is the most widely applied printing film at present, the thickness is generally 20-40 μm, and the most widely applied thickness is 20 μm. The biaxially oriented polypropylene stretch film has the main defect of poor heat sealability, so that the biaxially oriented polypropylene stretch film is generally used as a composite outer layer stretch film, and is ideal in moisture resistance, transparency, strength, stiffness and printability after being compounded with a polyethylene stretch film, and is suitable for containing dry food.
The existing stretching film structure, for example, chinese patent with patent publication No. CN204998082U discloses an anti-aging high-toughness stretching film, which sequentially comprises, from inside to outside, a first PE layer, an EVA resin layer, an anti-aging substrate layer, a PVA coating layer, an adhesive layer, and a second PE layer, wherein the EVA resin layer and the first PE layer are sequentially compounded on the inner side of the anti-aging substrate layer, the PVA coating layer is coated on the outer side of the anti-aging substrate layer, and the second PE layer is bonded and compounded on the outer side of the PVA coating layer through the adhesive layer; and a LOGO identification layer is printed on the outer surface of the second PE layer.
The above prior art solutions have the following drawbacks: the stretch film is used for food packaging, and sometimes can be used for wrapping food in a high-temperature state or heating along with the food, but the structures of the PE layer, the EVA resin layer, the anti-aging base material and the PVA coating layer can be changed under a high-temperature environment, so that the overall strength of the stretch film can be reduced, the stretch film is easy to break or generate large stretching deformation in the process of wrapping the food by using the stretch film, the stretch film is made to lose efficacy, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a multilayer high temperature resistant stretch film, can keep higher intensity in high temperature environment to food package in the adaptation high temperature environment exists to prior art.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a multilayer high temperature resistant stretch film, includes the polyethylene layer, the polyethylene layer includes first polyethylene layer and second polyethylene layer, first polyethylene layer with be provided with the nylon layer between the second polyethylene layer, the nylon layer with between the first polyethylene layer the nylon layer with all be provided with the tie coat between the second polyethylene layer.
By adopting the technical scheme, the nylon layer is added in the stretched film, the nylon film is a very tough film, has good transparency, good luster, high tensile strength and high tensile strength, also has good heat resistance, cold resistance, oil resistance and organic solvent resistance, and is excellent in wear resistance and puncture resistance, the tensile strength of the stretched film in a high-temperature environment is improved, the structure of the whole stretched film can be maintained, and the problems of breakage or overlarge stretching deformation and the like under the high-temperature condition are avoided.
The present invention may be further configured in a preferred embodiment as: the first polyethylene layer comprises a linear low density polyethylene layer fixed on one side of the bonding layer far away from the nylon layer and a viscous polyethylene layer fixed on one side of the linear low density polyethylene layer far away from the bonding layer;
the film structure of the second polyethylene layer and the first polyethylene layer are symmetrically arranged with respect to the nylon layer.
Through adopting above-mentioned technical scheme, linear low density polyethylene layer intensity is big, toughness is good, the rigidity is big, heat-resisting, cold resistance, and linear low density polyethylene layer can improve tensile membrane holistic intensity and toughness, and linear low density polyethylene layer can be better performance parcel effect under high temperature environment, and viscidity polyethylene layer can provide the adhesion properties of preferred for tensile membrane, makes the better attached to on the parcel thing of tensile membrane, improves the inseparable degree of parcel simultaneously.
The present invention may be further configured in a preferred embodiment as: the adhesive polyethylene layer is internally mixed with a polymer layer of PIB or master batch, and is provided with a plurality of breathable grooves.
Through adopting above-mentioned technical scheme, viscidity polyethylene layer viscidity can become strong under the high temperature condition, even leave high temperature environment, the temperature on viscidity polyethylene layer also can't be cooled off fast, and tensile membrane can become difficult for demolising, through seting up ventilative groove, increases the area of contact of viscidity polyethylene layer and air for cooling rate.
The present invention may be further configured in a preferred embodiment as: and polyvinyl chloride layers are arranged between the linear low-density polyethylene layer and the viscous polyethylene layer.
Through adopting above-mentioned technical scheme, the light fastness, the ageing resistance of polyvinyl chloride layer are better and have better tear resistance, can breathe freely, are a clean, colorless, transparent film, can strengthen viscidity polyethylene layer ventilation effect for cooling rate makes the top layer of tensile membrane have stronger tear resistance simultaneously, and the inside membrane structure of protection tensile membrane that the polyvinyl chloride layer can be better.
The present invention may be further configured in a preferred embodiment as: still include polyester film layer, polyester film layer is provided with two-layerly and is located respectively first polyethylene layer with between the tie coat, second polyethylene layer with between the tie coat.
By adopting the technical scheme, the polyester film layer is colorless, transparent, moisture-proof, air-proof, soft, high in strength, resistant to acid, alkali, grease and solvent and resistant to high and low temperatures, has better surface fastness to ink after being processed by electric sparks, can be used for printing information such as marks and logos, and is not easy to fall off.
The present invention may be further configured in a preferred embodiment as: the nylon film further comprises an aluminized film layer, wherein the aluminized film layer is provided with two layers which are respectively arranged between the bonding layer and the polyester film layer on two sides of the nylon layer.
By adopting the technical scheme, the aluminized film has the characteristics of both a plastic film and a metal film, the aluminized film has the effects of shading and ultraviolet irradiation prevention on the surface of the film, the quality guarantee period of contents is prolonged, the brightness of the film is improved, the aluminized film also has the advantages of low price, attractive appearance and better barrier property, the attractiveness of the stretch film is improved, the stretch film has better shading property, and the aluminized film is arranged between the bonding layer and the polyester film layer and can be prevented from covering mark information on the polyester film layer.
The present invention may be further configured in a preferred embodiment as: the lower surfaces of the linear low-density polyethylene layer, the polyvinyl chloride layer, the polyester film layer and the aluminized film layer are all provided with rough structures.
By adopting the technical scheme, the upper surface of each film layer is subjected to rough treatment, so that the contact area between the film layers is increased, and the connection between the layers is tighter and firmer.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the nylon layer is added in the stretched film, so that the structural strength of the stretched film in a high-temperature environment is improved by means of the material characteristics of the nylon film, the condition that the stretched film is broken or the stretched body is deformed too much in the high-temperature environment is effectively avoided, and the strength and the puncture resistance of the stretched film can be improved by the nylon layer;
2. the polyvinyl chloride layer is arranged on the surface of the stretched film, so that the tear resistance of the stretched film and the surface film layer is enhanced, and the stretched film is less prone to damage;
3. the aluminum-plated thin film layer is added in the stretched film, so that the appearance of the stretched film is more ornamental, the stretched film has a better light shading effect, and articles in the stretched film are better protected.
Drawings
FIG. 1 is a schematic structural diagram of the first embodiment;
fig. 2 is a schematic structural diagram of the second embodiment.
Reference numerals: 1. a first polyethylene layer; 2. a second polyethylene layer; 3. a nylon layer; 4. a bonding layer; 5. a linear low density polyethylene layer; 6. a tacky polyethylene layer; 7. a ventilation groove; 8. a polyvinyl chloride layer; 9. a polyester film layer; 10. and (5) aluminizing the film layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1, the multilayer high temperature resistant stretch film includes a first polyethylene layer 1 and a second polyethylene layer 2, a nylon layer 3 is disposed between the first polyethylene layer 1 and the second polyethylene layer 2, TIE layers 4 are disposed between the nylon layer 3 and the first polyethylene layer 1 and the second polyethylene layer 2 to connect a nylon film and a polyethylene film which are not easy to be combined, and the TIE layers 4 are TIE (adhesive resin).
The implementation principle of the embodiment is as follows: the nylon layer 3 and the polyethylene layer which are difficult to compound together are firmly connected together through the TIE bonding layer 4; under the high-temperature condition, the nylon layer 3 has stronger toughness, the nylon layer 3 enables the whole stretching film to have stronger structural strength under the high-temperature condition, the stretching film is not easy to be broken or generate unrecoverable deformation under the high-temperature condition, and the normal function of the stretching film under the high-temperature environment is ensured; the nylon layer 3, the first polyethylene layer 1 and the second polyethylene layer 2 do not produce harmful substances under the high-temperature condition, and cannot pollute food.
Example two:
referring to fig. 2, the multilayer high temperature resistant stretch film comprises a polyethylene layer and a nylon layer 3, wherein the polyethylene layer comprises a first polyethylene layer 1 and a second polyethylene layer 2, the nylon layer 3 is arranged between the first polyethylene layer 1 and the second polyethylene layer 2, bonding layers 4 are arranged between the nylon layer 3 and the first polyethylene layer 1 and between the nylon layer 3 and the second polyethylene layer 2, and the bonding layers 4 are bonding resin layers.
The first polyethylene layer 1 comprises a linear low density polyethylene layer 5 fixed on one side of the bonding layer 4 far away from the nylon layer 3 and an adhesive polyethylene layer 6 fixed on one side of the linear low density polyethylene layer 5 far away from the bonding layer 4; the film structure of the second polyethylene layer 2 and the first polyethylene layer 1 is symmetrically arranged about the nylon layer 3; a polyvinyl chloride layer 8 is arranged between the linear low-density polyethylene layer 5 and the viscous polyethylene layer 6, and the polyvinyl chloride layer 8 is used as a protective film layer on the outer side of the stretch film, so that the stretch film has a good tear-resistant effect; viscous polyethylene layer 6 has stronger viscidity for mixing the polymer layer that has PIB or master batch under the high temperature condition, has seted up a plurality of ventilative grooves 7 on viscous polyethylene layer 6 to increase the area of contact of viscous polyethylene layer 6 with the air, when tensile membrane left high temperature environment, ventilative groove 7 can be the cooling of the surperficial rete of tensile membrane fast to a certain extent, and faster messenger's viscidity of tensile membrane resumes normally, conveniently demolishs tensile membrane.
This stretch film still includes polyester film layer 9, and polyester film layer 9 is provided with two-layer and is located respectively between first polyethylene layer 1 and tie coat 4, between second polyethylene layer 2 and the tie coat 4, and polyester film layer 9 surface is through the electric spark treatment back, can be comparatively firm attached with printing ink, and polyester film layer 9 can regard as the printing layer, prints the LOGO information that needs on it.
The stretch film further comprises an aluminum-plated thin film layer 10, the aluminum-plated thin film layer 10 is provided with two layers and is respectively located between the bonding layers 4 and the polyester thin film layer 9 on the two sides of the nylon layer 3, the aluminum-plated thin film layer 10 has a good reflection effect, and the overall attractiveness of the stretch film is improved.
The lower surfaces of the linear low-density polyethylene layer 5, the polyvinyl chloride layer 8, the polyester film layer 9 and the aluminized film layer 10 are all provided with rough structures so as to increase the contact area between the film layers and enhance the tightness degree of connection between the layers, so that the connection between the layers is firmer.
The implementation principle of the embodiment is as follows: the nylon layer 3 is added in the stretched film, so that the structural strength of the stretched film in a high-temperature environment is improved by means of the material characteristics of the nylon film, the condition that the stretched film is broken or the stretched body is deformed too much in the high-temperature environment is effectively avoided, and the nylon layer 3 can also improve the strength and the puncture resistance of the stretched film; the polyvinyl chloride layer 8 is arranged on the surface of the stretch film, the polyvinyl chloride film layer has a good anti-tearing effect, the anti-tearing performance of the stretch film and the mask film layer can be enhanced, and the polyvinyl chloride layer 8 can effectively protect other film layers in the stretch film; the aluminum-plated thin film layer 10 is added in the stretched film, so that the appearance of the stretched film is more ornamental, the stretched film has a better light shielding effect, and articles in the stretched film are better protected.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. A multilayer high temperature resistant stretch film, includes polyethylene layer, its characterized in that: the polyethylene layer comprises a first polyethylene layer (1) and a second polyethylene layer (2), a nylon layer (3) is arranged between the first polyethylene layer (1) and the second polyethylene layer (2), and bonding layers (4) are arranged between the nylon layer (3) and the first polyethylene layer (1) and between the nylon layer (3) and the second polyethylene layer (2).
2. The multilayer high temperature resistant stretch film of claim 1, wherein: the first polyethylene layer (1) comprises a linear low-density polyethylene layer (5) fixed on one side of the bonding layer (4) far away from the nylon layer (3) and an adhesive polyethylene layer (6) fixed on one side of the linear low-density polyethylene layer (5) far away from the bonding layer (4);
the film structure of the second polyethylene layer (2) and the first polyethylene layer (1) is symmetrically arranged with respect to the nylon layer (3).
3. The multilayer high temperature resistant stretch film of claim 2, wherein: the adhesive polyethylene layer (6) is internally mixed with a polymer layer of PIB or master batch, and the adhesive polyethylene layer (6) is provided with a plurality of ventilation grooves (7).
4. The multilayer high temperature resistant stretch film of claim 2, wherein: and a polyvinyl chloride layer (8) is arranged between the linear low-density polyethylene layer (5) and the viscous polyethylene layer (6).
5. The multilayer high temperature resistant stretch film of claim 4, wherein: still include polyester film layer (9), polyester film layer (9) are provided with two-layerly and are located respectively first polyethylene layer (1) with between tie coat (4), second polyethylene layer (2) with between tie coat (4).
6. The multilayer high temperature resistant stretch film of claim 5, wherein: the nylon film is characterized by further comprising an aluminum-plated film layer (10), wherein the aluminum-plated film layer (10) is provided with two layers, and the two layers are respectively located between the bonding layer (4) and the polyester film layer (9) on the two sides of the nylon layer (3).
7. The multilayer high temperature resistant stretch film of claim 6, wherein: the lower surfaces of the linear low-density polyethylene layer (5), the polyvinyl chloride layer (8), the polyester film layer (9) and the aluminized film layer (10) are all provided with rough structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020585360.3U CN212219537U (en) | 2020-04-17 | 2020-04-17 | Multilayer high temperature resistant stretch film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020585360.3U CN212219537U (en) | 2020-04-17 | 2020-04-17 | Multilayer high temperature resistant stretch film |
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| Publication Number | Publication Date |
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| CN212219537U true CN212219537U (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020585360.3U Active CN212219537U (en) | 2020-04-17 | 2020-04-17 | Multilayer high temperature resistant stretch film |
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| CN (1) | CN212219537U (en) |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200540 No. 611, Shantong Road, Shanyang Town, Jinshan District, Shanghai Patentee after: Shanghai Tangke New Material Technology Co.,Ltd. Address before: 200540 No. 611, Shantong Road, Shanyang Town, Jinshan District, Shanghai Patentee before: SHANGHAI TANGKE NEW PACKAGE MATERIAL Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A multilayer high-temperature tensile film Effective date of registration: 20230116 Granted publication date: 20201225 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Jinshan sub branch Pledgor: Shanghai Tangke New Material Technology Co.,Ltd. Registration number: Y2023310000009 |