CN219566136U - Special steel coil packaging film - Google Patents
Special steel coil packaging film Download PDFInfo
- Publication number
- CN219566136U CN219566136U CN202320265407.1U CN202320265407U CN219566136U CN 219566136 U CN219566136 U CN 219566136U CN 202320265407 U CN202320265407 U CN 202320265407U CN 219566136 U CN219566136 U CN 219566136U
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- China
- Prior art keywords
- layer
- compression
- bonding
- medium density
- density board
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Abstract
The utility model discloses a special steel coil packaging film, which is provided with a medium density board, wherein the front side and the back side of the medium density board are connected with an adhesive layer through adhesive materials, the adhesive layer on one side of the medium density board is also connected with a co-extrusion layer, and the adhesive layer on the other side of the medium density board is connected with a polyethylene foam layer, and the utility model has the advantages that: the co-extrusion layer is divided into three layers of co-extrusion layers, after each layer is connected together in a pressing manner, the bonding layer and the bonding layer are also connected together in a pressing manner, so that the structural strength is ensured, the arrangement of the medium density board provides a certain supporting property for the packaging film, the polyethylene foam layer is used as the inner side to protect the steel coil, the cost of the structure is low, the structure has supporting property, the overall structure is light, the packaging is easy, the chemical resistance of the co-extrusion layer is good, and the storage and the transportation are convenient.
Description
Technical Field
The utility model relates to the field of packaging and transportation, in particular to a protection device for a large steel coil.
Background
The coil of strip can receive stress and can lead to the coil of strip to appear deformation at the in-process of transportation if meetting special road surface, consequently current coil of strip then can adopt the better roll up membrane of material to carry out the cladding when packing, still some special coil of strip need safer coil of strip packaging film in order to guarantee that the packaging film provides higher security for the coil of strip at the in-process of transportation in addition, current coil of strip packing generally adopts galvanized sheet, material such as iron sheet to carry out the cladding, but the cost is too high, and can't cushion the surface impact of coil of strip in the transportation, and reuse rate is low.
Disclosure of Invention
The utility model discloses a special steel coil packaging film, which aims to solve the problems of low reuse rate, high cost and large transportation loss of the existing steel coil packaging film.
The specific technical scheme is as follows:
the special steel coil packaging film is provided with a medium density board, the front side and the back side of the medium density board are connected with bonding layers through bonding materials, the bonding layers on one side of the medium density board are also connected with a co-extrusion layer, and the bonding layers on the other side of the medium density board are connected with a polyethylene foam layer.
The bonding layer is a film composed of ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer and low-density polyethylene copolymer.
The co-extrusion layer comprises polyethylene, a polypropylene blend film layer, a high-density foaming layer and an adhesive layer, wherein the adhesive layer comprises a polypropylene film layer and resin for bonding, which is arranged on the polypropylene film layer, and the adhesive layer are combined together through lamination.
The polyethylene foam layer and the adhesive layer are connected together through resin for bonding.
The bonding layer on the other side of the medium density board is connected with the compression-resistant framework layer, and the compression-resistant framework layer is connected with the polyethylene foam layer; the compression-resistant units of the compression-resistant framework layer are of a quadrilateral arc-shaped cavity structure, and the compression-resistant units are uniformly distributed in the compression-resistant framework layer;
an arc-shaped notch is arranged between each two compression-resistant units.
The utility model has the advantages that: the co-extrusion layer is divided into three layers of co-extrusion layers, after each layer is connected together in a pressing manner, the bonding layer and the bonding layer are also connected together in a pressing manner, so that the structural strength is ensured, the arrangement of the medium density board provides a certain supporting property for the packaging film, the polyethylene foam layer is used as the inner side to protect the steel coil, the cost of the structure is low, the structure has supporting property, the overall structure is light, the packaging is easy, the chemical resistance of the co-extrusion layer is good, and the storage and the transportation are convenient.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of a packaging film with a compression resistant skeleton;
fig. 4 is a schematic diagram of the arrangement of the compression unit.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. A special steel coil packaging film is provided with a middle density board 1, the middle base layer of the whole packaging film is guaranteed to have supportability, the front side and the back side of the middle density board 1 are connected with an adhesive layer 2 through adhesive materials, the adhesive materials can be used as mediums for mutually bonding films by using water-based laminating adhesives, the adhesive layer 2 on one side of the middle density board 1 is also connected with a co-extrusion layer 3, the adhesive layer 2 on the other side of the middle density board 1 is connected with a polyethylene foam layer 4, the polyethylene foam layer is arranged to effectively protect steel coils and prevent damage, and meanwhile, the structure provided with the polyethylene foam layer has heat preservation and insulation properties, and the temperature difference between the steel coils and the outside can be guaranteed to be within a certain range.
The adhesive layer 2 is a film comprising ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer and low-density polyethylene copolymer.
The co-extrusion layer 3 comprises an outer polyethylene and polypropylene blend film layer 31, a middle high-density foaming layer 32 and an inner adhesive layer 33;
the polyethylene and polypropylene blend film layer 31 is arranged, so that the outer part of the packaging film is not easy to damage, the packaging film has certain wear resistance, meanwhile, the manufacturing cost is low, the production is easy, films with specific sizes can be produced according to steel coils with corresponding sizes, the high-density foaming layer 32 can effectively prevent moisture and preserve heat, the adhesive layer comprises a polypropylene film layer and resin for adhesive bonding, and the adhesive layer 33 and the adhesive layer 2 are combined together through lamination and absorb certain external stress; in information technology materials, 2019 (020) 006, analysis of cause of adhesion decrease between a back sheet using polyolefin as an internal adhesive layer and EVA shows that EVA used in the above-described process is different in terms of performance, but the performance is relatively close. The bonding between the adhesive layer in the back plate and EVA occurs in the lamination process, and the bonding mechanism accords with the diffusion theory between two phases. For example, when the materials A and B are closely contacted, if the materials A and B are mutually soluble, an intermediate phase can be formed between the two phases, the existence of the intermediate phase can greatly reduce stress concentration, and the physical properties are not mutated. The interdiffusion of two phases in contact is a dissolution phenomenon, so that the degree of the interdiffusion is related to the chemical composition, the structural morphology, the polymerization degree and the like of two materials, and the more similar the chemical composition is, the stronger the interdiffusion effect is, the more the viscosity between the two phases is increased, and if the molecular structure is provided with a linear or branched structure, the bonding between the two phases is promoted. The adhesive layer 33 comprises a polypropylene film layer and a resin for adhesive bonding arranged on the polypropylene film layer, the performance of the adhesive layer is relatively close to that of a film composed of ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer and low-density polyethylene copolymer contained in the adhesive layer 2, and the adhesive layer are of film structures, so that the connection between the co-extrusion layer and the medium-density plate is better and more stable due to the lamination effect.
The polyethylene foam layer 4 is connected with the bonding layer 2 through resin for bonding, the last inner film of the polyethylene foam layer is in direct contact with the steel coil, and the surface layer of the steel coil can be protected again.
In order to further provide protection support for the steel coil, the utility model provides a structure with a compression-resistant framework, wherein an adhesive layer 2 on the other side of the medium density board 1 is connected with a compression-resistant framework layer 5, and the compression-resistant framework layer 5 is connected with a polyethylene foam layer 4; the compression-resistant units 51 of the compression-resistant framework layer are of a quadrilateral arc-shaped cavity structure, and the compression-resistant units 51 are uniformly distributed in the compression-resistant framework layer 5;
an arc gap 52 is arranged between each compression-resistant unit 51, and the compression-resistant units 51 can be compressed in the arc gap 52 after being subjected to stress deformation due to the arrangement of the arc gap 52 structure, so that stress is buffered, and steel coils are better protected.
Claims (4)
1. A special steel coil packaging film is characterized in that: the method comprises the steps of arranging a medium density board, wherein the front side and the back side of the medium density board are connected with bonding layers through bonding materials, the bonding layer on one side of the medium density board is also connected with a co-extrusion layer, and the bonding layer on the other side of the medium density board is connected with a polyethylene foam layer; the co-extrusion layer comprises polyethylene, a polypropylene blend film layer, a high-density foaming layer and an adhesive layer, wherein the adhesive layer comprises a polypropylene film layer and resin for bonding, which is arranged on the polypropylene film layer, and the adhesive layer are combined together through lamination.
2. The special steel coil packaging film according to claim 1, wherein: the bonding layer is a film composed of ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer and low-density polyethylene copolymer.
3. The special steel coil packaging film according to claim 1, wherein: the bonding layer on the other side of the medium density board is connected with the compression-resistant framework layer, and the compression-resistant framework layer is connected with the polyethylene foam layer; the compression-resistant units of the compression-resistant framework layer are of a quadrilateral arc-shaped cavity structure, and the compression-resistant units are uniformly distributed in the compression-resistant framework layer.
4. A special steel coil packaging film as set forth in claim 3, wherein: an arc-shaped notch is arranged between each two compression-resistant units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320265407.1U CN219566136U (en) | 2023-02-21 | 2023-02-21 | Special steel coil packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320265407.1U CN219566136U (en) | 2023-02-21 | 2023-02-21 | Special steel coil packaging film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219566136U true CN219566136U (en) | 2023-08-22 |
Family
ID=87655529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320265407.1U Active CN219566136U (en) | 2023-02-21 | 2023-02-21 | Special steel coil packaging film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219566136U (en) |
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2023
- 2023-02-21 CN CN202320265407.1U patent/CN219566136U/en active Active
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