Aluminum-containing cover film easy to stamp

Abstract

The utility model discloses an aluminum-containing cover film easy to stamp. The aluminum-containing cover film easy to stamp comprises a first film layer, a second film layer, a third coating, a limiting annular layer and a bonding layer. The first film layer, the limiting annular layer, the second film layer and the third coating layer are sequentially arranged from top to bottom, the limiting annular layer is of an annular structure, and the limiting annular layer is connected with the first film layer and the second film layer through bonding layers; the second film layer is made of aluminum foil, the third coating is gloss oil, and the gloss oil is coated on the face, away from the first film layer, of the second film layer. The aluminum foil is adopted on the second film layer, so that the easy-to-stamp property and the barrier property of the cover film can be improved; the limiting annular layer is arranged between the first film layer and the second film layer, so that the easy-to-stamp property can be improved; the gloss oil is coated on the surface, deviating from the first film layer, of the second film layer, so that the second film layer is prevented from being in direct contact with a reagent, and the alcohol resistance of the second film layer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of covering films, and particularly relates to an easily puncturable aluminum-containing covering film. Background Art

[0002] For some current diagnostic reagents, the heat-sealing bottom material of the covering film used is mostly PP material; and some diagnostic reagents usually contain 75-90% alcohol. When the PP material is in contact with alcohol for a long time, it is easy to affect the sealing performance of the PP material; in addition, after the covering film is heat-sealed, it needs to be punctured with a plastic syringe, so the requirement for the puncturability of the material is very high.

[0003] Therefore, a covering film with certain alcohol resistance, high barrier property and puncturability is needed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects existing in the prior art and provide an easily puncturable aluminum-containing covering film, which can effectively solve the above problems existing in the prior art.

[0005] To achieve the above purpose, the technical solution of the utility model provides

[0006] An easily puncturable aluminum-containing covering film, which comprises a first film layer, a second film layer, a third coating layer, a limiting annular layer and an adhesive layer;

[0007] The first film layer, the limiting annular layer, the second film layer and the third coating layer are arranged in sequence from top to bottom. The limiting annular layer is of a ring structure, and the limiting annular layer is connected to the first film layer and the second film layer through the adhesive layer;

[0008] The second film layer is made of aluminum foil, the third coating layer is varnish, and the varnish is coated on the side of the second film layer facing away from the first film layer.

[0009] Further, the inner ring diameter of the limiting annular layer is 0.5-2 cm.

[0010] Further, the first film layer is made of CPP film, and the thickness of the first film layer is 12-20 μm.

[0011] Further, the thickness of the second film layer is 20-30 μm.

[0012] Further, the thickness of the third coating layer is 0.5-3 μm.

[0013] Further, the limiting annular layer is made of CPP film, and the thickness of the limiting annular layer is 10-15 μm.

[0014] Further, the thickness of the adhesive layer is 2-5 μm.

[0015] The advantages and beneficial effects of the present utility model are as follows: By using aluminum foil in the second film layer, the puncturability and barrier property of the cover film can be improved; by providing a limiting annular layer between the first film layer and the second film layer, the puncturability can be enhanced; by coating varnish on the side of the second film layer facing away from the first film layer, direct contact between the second film layer and the reagent can be avoided, and the alcohol resistance of the second film layer can be effectively improved. Description of the Drawings

[0016] Figure 1 is a schematic structural view of an easily puncturable aluminum-containing cover film according to the present utility model.

[0017] The first film layer 1, the second film layer 2, the third coating layer 3, and the limiting annular layer 4. Detailed Embodiments

[0018] The following further describes the detailed embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and should not be used to limit the protection scope of the present utility model.

[0019] The manufacturers and models of the materials used in the present utility model are as follows:

[0020] Aluminum foil, the manufacturer is Chinalco, and the model is 8011;

[0021] CPP, the manufacturer is Meifeng, and the model is mfh011;

[0022] Varnish, the manufacturer is Sun Chemical;

[0023] Adhesive layer, the manufacturer is Mitsui Glue, and the model is pp6260.

[0024] As Figure 1 shown, an easily puncturable aluminum-containing cover film includes a first film layer 1, a second film layer 2, a third coating layer 3, a limiting annular layer 4, and an adhesive layer;

[0025] The first film layer 1, the limiting annular layer 4, the second film layer 2, and the third coating layer 3 are arranged in sequence from top to bottom. The limiting annular layer 4 is of an annular structure, and the limiting annular layer 4 is respectively connected to the first film layer 1 and the second film layer 2 through an adhesive layer;

[0026] The second film layer 2 uses aluminum foil, the third coating layer 3 is varnish, and the varnish is coated on the side of the second film layer 2 facing away from the first film layer 1.

[0027] In the above technical solution, by using aluminum foil in the second film layer, the puncturability and barrier property of the cover film can be improved; by providing a limiting annular layer between the first film layer and the second film layer, the puncturability can be enhanced; by coating varnish on the side of the second film layer facing away from the first film layer, direct contact between the second film layer and the reagent can be avoided, and the alcohol resistance of the second film layer can be effectively improved.

[0028] Preferably, the inner ring diameter of the limiting annular layer 4 is 0.5 - 2 cm.

[0029] Preferably, the first film layer 1 is made of CPP film, and the thickness of the first film layer 1 is 12 - 20 μm.

[0030] Preferably, the thickness of the second film layer 2 is 20 - 30 μm.

[0031] Preferably, the thickness of the third coating layer 3 is 0.5 - 3 μm.

[0032] Preferably, the limiting annular layer 4 is made of CPP film, and the thickness of the limiting annular layer 4 is 10 - 15 μm.

[0033] Preferably, the thickness of the adhesive layer is 2 - 5 μm.

[0034] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An easy-to-poke aluminum-containing cover film, characterized in that: It comprises a first film layer (1), a second film layer (2), a third coating layer (3), a limiting annular layer (4), and an adhesive layer; The first film layer (1), the limiting annular layer (4), the second film layer (2) and the third coating layer (3) are arranged in sequence from top to bottom; the limiting annular layer (4) is an annular structure; the limiting annular layer (4) is connected to the first film layer (1) and the second film layer (2) via an adhesive layer; The second film layer (2) is made of aluminum foil, the third coating layer (3) is varnish, and the varnish is coated on a surface of the second film layer (2) that is away from the first film layer (1).

2. The easy-to-poke aluminum-containing cover film according to claim 1, characterized in that: The inner ring diameter of the limiting annular layer (4) is 0.5-2 cm.

3. The easy-to-poke aluminum-containing cover film according to claim 2, characterized in that: The first film layer (1) is a CPP film, and the thickness of the first film layer (1) is 12-20 μm.

4. The easy-to-poke aluminum-containing cover film according to claim 1, characterized in that: The thickness of the second film layer (2) is 20-30 μm.

5. The easy-to-poke aluminum-containing cover film according to claim 1, characterized in that: The thickness of the third coating (3) is 0.5-3 μm.

6. The easy-to-poke aluminum-containing cover film according to claim 2, characterized in that: The limiting annular layer (4) is made of a CPP film, and the thickness of the limiting annular layer (4) is 10-15 μm.

7. The easy-to-poke aluminum-containing cover film according to claim 1, characterized in that: The thickness of the adhesive layer is 2-5 μm.

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