Degradable thermal shrinkage film structure

Abstract

The utility model relates to the technical field of thermal shrinkage films, in particular to a degradable thermal shrinkage film structure. Comprising a PE film body, two layers of waterproof films, two layers of flame-retardant layers and two layers of reinforcing rib nets, the PE film body is arranged between the two layers of waterproof films; the two flame-retardant layers are respectively adhered to the waterproof films on the two sides; the two layers of reinforcing rib nets are respectively adhered to the flame-retardant layers on the two sides; the reinforcing rib net comprises a plurality of transverse ribs and a plurality of longitudinal ribs which are arranged at equal intervals, and the extending direction of the transverse ribs is perpendicular to the extending direction of the longitudinal ribs. And a plurality of notches are formed in the transverse ribs and the longitudinal ribs of the reinforcing rib net on one side. Due to the arrangement of the reinforcing rib net, the tensile property and the air permeability of the film body are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrinkable films, in particular to a degradable heat shrinkable film structure. Background Art

[0002] PE stretch film is an industrial packaging film product with high tensile strength, large elongation, good self-adhesion, high transparency and other physical properties. It can be used for manual stretch film, machine stretch film, and can be widely used for centralized packaging of various goods. PE stretch film is mainly made of several different grades of polyolefin resin mixed and extruded. It has puncture resistance, super strength and high performance. It is used to wrap the goods stacked on the pallet to make the packaging more stable and neat, and has a stronger waterproof effect. It is widely used in foreign trade exports, papermaking, hardware, plastic chemicals, building materials, food and medicine.

[0003] A Chinese patent with authorization announcement number CN212501890U discloses a heat shrink film for packaging, including a heat shrink film body and a roll, wherein the heat shrink film body is wound around the outside of the roll, and the upper and lower end surfaces of the heat shrink film body are flush with the upper and lower end surfaces of the roll, and the inner wall of the roll is provided with four slots, the heat shrink film body is composed of a plurality of heat shrink film sheets, and a tear line is provided between two adjacent heat shrink film sheets, the heat shrink film sheets include a first film sheet and a second film sheet, the first film sheet and the second film sheet are an integral structure, and a folding line is provided between the first film sheet and the second film sheet, the upper end surfaces of the first film sheet and the second film sheet are flush, and the outer surface of the first film sheet is provided with two through-going air holes.

[0004] The above-mentioned patent still has the following technical defects: the tensile strength of the film is average, and applying force during the winding process may cause the film to tear; and after being wrapped around an object, the air permeability of the object will be greatly reduced. Utility Model Content

[0005] The utility model aims to provide a degradable heat shrinkable film structure in view of the problems existing in the background technology.

[0006] The technical solution of the utility model is a degradable heat shrinkable film structure, comprising:

[0007] PE film body;

[0008] Two layers of waterproof membrane, the PE membrane body is arranged between the two layers of waterproof membrane;

[0009] Two flame retardant layers, the two flame retardant layers are respectively bonded to the waterproof membrane on both sides;

[0010] Two layers of reinforcing rib nets, and the two layers of reinforcing rib nets are respectively adhered to the flame-retardant layers on both sides; the reinforcing rib net includes a number of transverse rib strips and a number of longitudinal rib strips arranged at equal intervals, and the extending direction of the transverse rib strips is perpendicular to the extending direction of the longitudinal rib strips; a number of notches are formed on both the transverse rib strips and the longitudinal rib strips of the reinforcing rib net on one side.

[0011] Preferably, a number of connecting rib strips are connected between the reinforcing rib nets on both sides, and the connecting rib strips penetrate through the PE film body, the waterproof film and the flame-retardant layer.

[0012] Preferably, the waterproof film is made of TPU material.

[0013] Preferably, the flame-retardant layer is made of polycarbonate material.

[0014] Preferably, the reinforcing rib net is made of polyester resin material.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects: the reinforcing rib net arranged by the transverse rib strips and the longitudinal rib strips, and the reinforcing rib net covers both sides of the film body, so as to improve the tensile performance of the shrink film. The shrink film with the notched side is wound around the surface of the object, and only the part of the reinforcing rib net contacts the object. And a plurality of notches are formed on the reinforcing rib net, so that the air permeability of the shrink film is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the utility model.

[0017] Figure 2 is an exploded view of the utility model.

[0018] Figure 3 is Figure 1 a partial enlarged structural schematic diagram of part A of

[0019] Reference numerals: 1, PE film body; 2, waterproof film; 3, flame-retardant layer; 41, transverse rib strip; 42, longitudinal rib strip; 4001, notch; 5, connecting rib strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Embodiment 1

[0021] As Figures 1 - 3As shown in the figure, a degradable heat-shrinkable film structure proposed in this embodiment includes a PE film body 1, two waterproof films 2, two flame-retardant layers 3, and two reinforcing mesh webs; the PE film body 1 is disposed between the two waterproof films 2; the waterproof film is made of TPU material; the two flame-retardant layers 3 are respectively adhered to the waterproof films 2 on both sides; the flame-retardant layer is made of polycarbonate material; the two reinforcing mesh webs are respectively adhered to the flame-retardant layers 3 on both sides; the reinforcing mesh web includes a plurality of transverse ribs 41 and a plurality of longitudinal ribs 42 arranged at equal intervals, the reinforcing mesh web is made of polyester resin material, and the extending direction of the transverse ribs 41 is perpendicular to the extending direction of the longitudinal ribs 42; a plurality of notches 4001 are formed on both the transverse ribs 41 and the longitudinal ribs 42 of the reinforcing mesh web on one side; in order to facilitate the tearing of the shrinkable film, a plurality of easy-tearing lines can be arranged at equal intervals on the shrinkable film.

[0022] In this embodiment, the setting of the waterproof film 2 and the flame-retardant layer 3 enables the shrinkable film to have the effects of waterproofing and flame retardancy, and by arranging the reinforcing mesh webs on both outer sides, the tensile property of the shrinkable film can be improved. Tie the shrinkable film with the side having the notches 4001 to the surface of an object, and the part in contact with the object is only the part of the reinforcing mesh web, and a plurality of notches 4001 are formed on the reinforcing mesh web, so that the air permeability of the shrinkable film can be improved. If the air permeability is not considered, the other side can be wrapped around the surface of the object.

[0023] Embodiment 2

[0024] As Figures 1 - 3 As shown in the figure, a degradable heat-shrinkable film structure proposed in this embodiment includes a PE film body 1, two waterproof films 2, two flame-retardant layers 3, and two reinforcing mesh webs; the PE film body 1 is disposed between the two waterproof films 2; the waterproof film is made of TPU material; the two flame-retardant layers 3 are respectively adhered to the waterproof films 2 on both sides; the flame-retardant layer is made of polycarbonate material; the two reinforcing mesh webs are respectively adhered to the flame-retardant layers 3 on both sides; the reinforcing mesh web includes a plurality of transverse ribs 41 and a plurality of longitudinal ribs 42 arranged at equal intervals, the reinforcing mesh web is made of polyester resin material, and the extending direction of the transverse ribs 41 is perpendicular to the extending direction of the longitudinal ribs 42; a plurality of notches 4001 are formed on both the transverse ribs 41 and the longitudinal ribs 42 of the reinforcing mesh web on one side; in order to facilitate the tearing of the shrinkable film, a plurality of easy-tearing lines can be arranged at equal intervals on the shrinkable film.

[0025] A plurality of connecting ribs 5 are connected between the reinforcing mesh webs on both sides, and the connecting ribs 5 penetrate through the PE film body 1, the waterproof film 2, and the flame-retardant layer 3. By arranging the connecting ribs 5, the connection between the reinforcing mesh webs on both sides can be strengthened, and the tear resistance of the shrinkable film can be further improved.

[0026] The embodiments of the present utility model have been described in detail in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those skilled in the art to which it pertains.

Claims

1. A degradable heat-shrinkable film structure, characterized in that, Comprising: A PE film body (1); Two waterproof films (2), with the PE film body (1) disposed between the two waterproof films (2); Two flame-retardant layers (3), which are respectively bonded to the waterproof films (2) on both sides; Two reinforcing mesh layers, which are respectively bonded to the flame-retardant layers (3) on both sides; The reinforcing mesh layer includes a number of transverse rib strips (41) arranged at equal intervals and a number of longitudinal rib strips (42), and the extending direction of the transverse rib strips (41) is perpendicular to the extending direction of the longitudinal rib strips (42); A number of notches (4001) are formed on both the transverse rib strips (41) and the longitudinal rib strips (42) of the reinforcing mesh layer on one side.

2. The structure of a degradable heat-shrinkable film according to claim 1, wherein, A number of connecting rib strips (5) are connected between the reinforcing mesh layers on both sides, and the connecting rib strips (5) penetrate through the PE film body (1), the waterproof film (2) and the flame-retardant layer (3).

3. A degradable heat-shrinkable film structure according to claim 1, characterized in that, The waterproof film is made of TPU material.

4. A degradable heat-shrinkable film structure according to claim 1, characterized in that, The flame-retardant layer is made of polycarbonate material.

5. A degradable heat shrinkable film structure according to claim 1, wherein, The reinforcing mesh layer is made of polyester resin material.

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