Novel environment-friendly PE heat shrink film

Abstract

The utility model relates to the related technical field of heat shrink films, in particular to a novel environment-friendly PE heat shrink film which comprises a roller, and the outer side surface of the roller is fixedly connected with a shrink film main body layer. According to the novel environment-friendly PE heat shrink film, the polyethylene is adopted as a base material of the shrink film main body layer, the PE is relatively environment-friendly and can be recycled to a certain extent, meanwhile, additives or chemical substances which are relatively harmful to the environment are not used in the production process of the novel environment-friendly PE heat shrink film, so that the pollution to the environment is reduced, and the production cost is reduced. According to the packaging film, multiple functions are integrated on one layer of film, compared with packaging with multiple films with single functions, the total usage amount of materials is reduced, antibacterial films, heat insulation films and the like do not need to be independently used, resource consumption and waste generation are reduced, the antibacterial layer can prevent food deterioration caused by bacterium breeding, and the packaging film is environment-friendly and energy-saving. The heat-insulating layer is arranged, so that the heat-shrinkable film has certain heat-insulating capacity, and the wear-resistant layer improves the convenience and safety of operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat shrinkable film technical field especially relates to a novel environmental protection PE heat shrinkable film. BACKGROUND

[0002] Heat shrinkable film is shrinkable film type, shrinkable film must have higher puncture resistance, good shrinkage and certain shrinkage stress, the film cannot produce hole in the shrinkage process, in today's packaging industry, heat shrinkable film is widely used in the packaging of various products, plays the role of protection, decoration and facilitates storage and transportation etc.

[0003] But the existing heat shrinkable film, not enough environmental protection, and the function is single, cannot satisfy some products with special requirements for packaging, such as the packaging demand of temperature sensitive and susceptible to microbial contamination etc. UTILITY MODEL CONTENT

[0004] The utility model discloses a novel environmental protection PE heat shrinkable film to solve the above background art proposed existing heat shrinkable film, not enough environmental protection, and the function is single, cannot satisfy some products with special requirements for packaging, such as the packaging demand of temperature sensitive and susceptible to microbial contamination etc.

[0005] To realize above-mentioned purpose, the utility model provides following technical scheme: a novel environmental protection PE heat shrinkable film, including cylinder, the one end surface of cylinder is connected with the limiting block fixedly, the outside surface of cylinder is connected with shrinkable film main body layer fixedly, the inside surface of shrinkable film main body layer is connected with plasticizer microcapsule fixedly, the lower surface of shrinkable film main body layer is connected with bonding transition layer fixedly, the lower surface of bonding transition layer is connected with antibacterial layer fixedly, the upper surface of shrinkable film main body layer is connected with heat insulation layer fixedly, the upper surface of heat insulation layer is connected with wear layer fixedly.

[0006] Preferably, the cylinder is a hollow cylindrical structure, and the limiting block is provided with two groups at both ends of the cylinder.

[0007] Preferably, the shrinkable film main body layer is arranged around the outside surface of the cylinder, and the shrinkable film main body layer is tightly attached to the outside surface of the cylinder, and the thickness of the shrinkable film main body layer is 0.08-0.2mm.

[0008] Preferably, the plasticizer microcapsules are uniformly distributed in multiple groups on the inside surface of the shrinkable film main body layer, and the particle size of the plasticizer microcapsules is 10-50μm.

[0009] Preferably, the thickness of the adhesive transition layer is 0.02-0.05mm, and the antibacterial layer is connected with the shrink film main layer through the adhesive transition layer.

[0010] Preferably, the antibacterial layer contains nano silver particles.

[0011] Preferably, the hardness of the wear-resistant layer is Shore A 60-A80, and the surface of the wear-resistant layer is provided with a rhombic grid-shaped anti-skid pattern.

[0012] Compared with the prior art, the novel environment-friendly PE heat shrinkable film has the beneficial effects that: when in use, the shrink film main layer is wrapped around and closely attached to the outer side of the roller, and maintains a relatively flat state when not heated, the plasticizer microcapsules are uniformly distributed on the inner side surface of the shrink film main layer, and at this time, the plasticizer microcapsules are in a relatively stable state and are wrapped inside the film layer; when the heat shrinkable film is heated, the shrink film main layer is heated, and at this time, the plasticizer is rapidly and uniformly released from the microcapsules, the released plasticizer uniformly acts on the shrink film main layer, the nano silver particles in the antibacterial layer interact with the cell membranes of bacteria, the antibacterial layer continuously plays an antibacterial role, and the packaged object is protected from microbial contamination; the adhesive transition layer can adapt to the shrinkage deformation of the shrink film main layer, ensures that the antibacterial layer and the shrink film main layer will not be separated, and guarantees the stability of the entire heat shrinkable film structure; when there is heat transfer from the outside, for example, in a high-temperature environment or in the presence of a heat radiation source, the heat insulation layer can block or reduce the conduction of heat to the packaged object; the wear-resistant layer can resist wear and tear when in contact with other objects and rubbing, and maintains the integrity of the heat shrinkable film; polyethylene is used as the basic material of the shrink film main layer, PE itself is relatively environmentally friendly and can be recycled to some extent, meanwhile, the novel heat shrinkable film does not use additives or chemicals that are harmful to the environment during the production process, thereby reducing pollution to the environment; the various functions are integrated into a thin film, compared with using multiple single-function films for packaging, the total amount of materials used is reduced, and the use of antibacterial films, heat insulation films and the like is not required, thereby reducing resource consumption and waste generation; the antibacterial layer can prevent food spoilage caused by bacterial growth; the heat insulation layer enables the heat shrinkable film to have certain heat insulation capacity; and the wear-resistant layer improves the convenience and safety of operation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a side view of the appearance structure of the utility model;

[0014] Figure 2 It is a schematic view of the mutual cooperation structure of the shrink film main layer and the heat insulation layer of the utility model;

[0015] Figure 3The utility model discloses a bonding transition layer and antibacterial layer mutual cooperation structure schematic view.

[0016] Figure 4 The utility model discloses a plasticizer microcapsule and shrink film main body layer mutual cooperation structure schematic view.

[0017] In the figure: 1, cylinder; 2, limiting block; 3, shrink film main body layer; 4, plasticizer microcapsule; 5, bonding transition layer; 6, antibacterial layer; 7, heat insulation layer; 8, wear-resistant layer. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work fall within the protection scope of the utility model.

[0019] Please refer to Figures 1-4 The utility model provides a technical scheme: a novel environmental protection PE heat shrinkable film, including cylinder 1, the surface of one end of cylinder 1 is fixedly connected with limiting block 2, the outside surface of cylinder 1 is fixedly connected with shrink film main body layer 3, the inside surface of shrink film main body layer 3 is fixedly connected with plasticizer microcapsule 4, the lower surface of shrink film main body layer 3 is fixedly connected with bonding transition layer 5, the lower surface of bonding transition layer 5 is fixedly connected with antibacterial layer 6, the upper surface of shrink film main body layer 3 is fixedly connected with heat insulation layer 7, the upper surface of heat insulation layer 7 is fixedly connected with wear-resistant layer 8.

[0020] Further, the cylinder 1 is a hollow cylindrical structure, the limiting block 2 is provided with two groups at both ends of the cylinder 1, through the setting of the cylinder 1 and the limiting block 2, when using, the cylinder 1 is a hollow cylindrical structure, so that the cylinder 1 is more easily formed in the manufacturing process, and also facilitates the operation and installation in the use process, the hollow design can also reduce the material usage, reduce the cost, the limiting block 2 can play the positioning role, ensure that the position of shrink film main body layer 3 on the cylinder 1 is accurate, prevent shrink film main body layer 3 from slipping off from the cylinder 1, so that the heat shrinkable film can be smoothly unfolded and wrapped on the article.

[0021] Further, the shrink film main body layer 3 is arranged around the outer surface of the roller 1, and is tightly attached to the outer surface of the roller 1, and the thickness of the shrink film main body layer 3 is 0.08-0.2mm. Through the arrangement of the shrink film main body layer 3 and the roller 1, the shrink film main body layer 3 is uniformly wound on the roller 1 during use. Due to the tight attachment, the distribution of the film layer on the roller 1 is more regular, avoiding the occurrence of local over-thickness or under-thickness, so that the performance consistency of each part of the heat shrink film is improved, and the stability of the product quality is improved. The thickness of the shrink film main body layer 3 is 0.08-0.2mm. This thickness interval can not only ensure that the shrink film main body layer 3 has enough strength to carry other functional layers and realize the basic packaging protection function, but also takes into account the material cost and packaging convenience, avoiding the increase of cost and the difficulty of packaging operation caused by excessive thickness, or the inability to effectively protect the product caused by excessive thinness, so that the comprehensive performance of the heat shrink film in actual use is optimal.

[0022] Further, the plurality of groups of plasticizer microcapsules 4 are uniformly distributed on the inner surface of the shrink film main body layer 3, and the particle size of the plasticizer microcapsules 4 is 10-50μm. Through the arrangement of the plasticizer microcapsules 4 and the shrink film main body layer 3, the uniform distribution of the plasticizer microcapsules 4 can effectively improve the flexibility of the shrink film main body layer 3. The addition of the plasticizer microcapsules 4 enables the film to maintain good flexibility at low temperatures and not be easily broken. The particle size of the plasticizer microcapsules 4 is 10-50μm, which can ensure that the plasticizer is uniformly released when the heat shrink film is heated and shrunk, thereby optimizing the shrink performance of the film. The coating form of the plasticizer microcapsules 4 can effectively protect the plasticizer from oxidation or volatilization, thereby prolonging the service life of the heat shrink film.

[0023] Further, the thickness of the bonding transition layer 5 is 0.02-0.05mm, and the antibacterial layer 6 is bonded and connected to the shrink film main body layer 3 through the bonding transition layer 5. Through the arrangement of the bonding transition layer 5, the antibacterial layer 6 and the shrink film main body layer 3, if the thickness is too thin, it may not be completely bonded and may easily delaminate. If the thickness is too thick, it not only increases the material cost, but also may affect the overall film performance. The thickness of the bonding transition layer 5 is in the range of 0.02-0.05mm, which can provide sufficient bonding force to firmly bond and connect the antibacterial layer 6 to the shrink film main body layer 3. The bonding transition layer 5 plays a transitional role. The shrink film main body layer 3 has its own flexibility, shrinkability and other properties, and the antibacterial layer 6 has its special antibacterial function related properties. The bonding transition layer 5 can coordinate between the two, so that the antibacterial function of the antibacterial layer 6 can be best exerted without affecting the basic performance of the shrink film main body layer 3, and the independence and stability of the functions of the antibacterial layer 6 and the shrink film main body layer 3 are maintained, ensuring the performance reliability of the heat shrink film under different environmental conditions.

[0024] Further, the antibacterial layer 6 contains nano-silver particles. When in use, the nano-silver particles have strong antibacterial performance and can inhibit the growth and reproduction of bacteria, molds and other microorganisms. For packaging food, medicine and other products susceptible to microbial contamination, the shelf life of the products can be significantly prolonged, the product quality and safety can be ensured, and the product deterioration caused by microbial erosion can be reduced.

[0025] Further, the wear-resistant layer 8 has a hardness of Shore A 60-A80, and the surface of the wear-resistant layer 8 is provided with a rhombic grid-shaped anti-skid pattern. When in use, the hardness of Shore A 60-A80 enables the wear-resistant layer 8 to have good wear resistance, and the anti-skid pattern on the surface of the wear-resistant layer 8 can increase the friction force of the surface of the heat shrinkable film. When the film is stacked and transported, the anti-skid pattern can prevent the film from slipping between the film and the film, the film and the packaging equipment or the hands of the operator, thereby improving the operation safety and convenience.

[0026] Working principle: when the heat shrinkable film is unwound from the roller 1, the shrinkable film main layer 3 is wrapped around and tightly attached to the outer side of the roller 1. Polyethylene is used as the basic material of the shrinkable film main layer 3. PE itself is relatively environmentally friendly and can be recycled to some extent. At the same time, this new type of heat shrinkable film does not use additives or chemicals that are harmful to the environment during production, thereby reducing environmental pollution. The heat shrinkable film maintains a relatively flat state when not heated, and the plasticizer microcapsules 4 are uniformly distributed on the inner surface of the shrinkable film main layer 3. At this time, the plasticizer microcapsules 4 are in a relatively stable state and are wrapped inside the film layer. When the heat shrinkable film is heated, the shrinkable film main layer 3 is heated. At this time, the plasticizer is rapidly and uniformly released from the microcapsules. The released plasticizer uniformly acts on the shrinkable film main layer 3. The nano-silver particles in the antibacterial layer 6 interact with the cell membrane of bacteria. The antibacterial layer 6 continuously plays an antibacterial role to protect the packaged objects from microbial contamination. The adhesive transition layer 5 can adapt to the shrinkage deformation of the shrinkable film main layer 3, ensuring that the antibacterial layer 6 and the shrinkable film main layer 3 will not separate, and ensuring the stability of the entire heat shrinkable film structure. When there is heat transfer from the outside, such as in a high-temperature environment or in the presence of a heat radiation source, the heat insulation layer 7 can block or reduce the conduction of heat to the packaged objects. The wear-resistant layer 8 can resist wear and tear when it comes into contact with other objects and rubs against them, thereby maintaining the integrity of the heat shrinkable film.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A novel environmentally friendly PE heat shrink film, comprising a roller (1), characterized in that: A limiting block (2) is fixedly connected to one end surface of the roller (1), a shrink film main body layer (3) is fixedly connected to the outer surface of the roller (1), a plasticizer microcapsule (4) is fixedly connected to the inner surface of the shrink film main body layer (3), an adhesive transition layer (5) is fixedly connected to the lower surface of the shrink film main body layer (3), an antibacterial layer (6) is fixedly connected to the lower surface of the adhesive transition layer (5), a heat insulation layer (7) is fixedly connected to the upper surface of the shrink film main body layer (3), and a wear-resistant layer (8) is fixedly connected to the upper surface of the heat insulation layer (7).

2. The novel environmentally friendly PE heat-shrinkable film according to claim 1, characterized in that: The roller (1) is a hollow cylindrical structure, and the limiting block (2) is provided in two sets at both ends of the roller (1).

3. The novel environmentally friendly PE heat-shrinkable film according to claim 1, characterized in that: The shrink film main body layer (3) is disposed around the outer surface of the roller (1), the shrink film main body layer (3) is closely attached to the outer surface of the roller (1), and the thickness of the shrink film main body layer (3) is 0.08-0.2mm.

4. The novel environmentally friendly PE heat-shrinkable film according to claim 1, characterized in that: The plasticizer microcapsules (4) are evenly distributed in multiple groups on the inner surface of the shrink film main layer (3), and the particle size of the plasticizer microcapsules (4) is 10-50 μm.

5. The novel environmentally friendly PE heat-shrinkable film according to claim 1, characterized in that: The thickness of the bonding transition layer (5) is 0.02-0.05 mm, and the antibacterial layer (6) is bonded to the shrink film main body layer (3) through the bonding transition layer (5).

6. The novel environmentally friendly PE heat-shrinkable film according to claim 1, characterized in that: The antibacterial layer (6) contains silver nanoparticles.

7. The novel environmentally friendly PE heat-shrinkable film according to claim 1, characterized in that: The wear-resistant layer (8) has a hardness of Shore A60-A80, and the surface of the wear-resistant layer (8) is provided with a diamond-shaped grid anti-slip texture.

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