Winding film for optical industry

Abstract

The utility model discloses a wrapping film for optical industry, which comprises a low-pressure linear polyethylene layer, one side of the low-pressure linear polyethylene layer is provided with a high-transparency mixing layer for enhancing the transparency of the film, and one side of the high-transparency mixing layer far away from the low-pressure linear polyethylene layer is provided with a metallocene mixing layer for enhancing the elastic tension of the film. One side, far away from the high-transmittance mixing layer, of the metallocene mixing layer is provided with a reinforced mixing layer for improving the toughness and transparency of the film, and the low-pressure linear polyethylene layer, the high-transmittance mixing layer, the metallocene mixing layer and the reinforced mixing layer are bonded through hot pressing. According to the utility model, the low-pressure linear polyethylene layer, the high-transparency mixing layer, the metallocene mixing layer and the reinforced mixing layer are matched, so that the wrapping film for the optical industry has outstanding properties of high transparency, good tensile strength, high toughness, tear resistance and the like.

Description

Technical Field

[0001] The utility model relates to an optical winding film.

Background Art

[0002] For convenient display so that customers can directly view the packaged products, and for quick inspection and confirmation of the packaging integrity during transportation, the transparency of the winding film is particularly important for some product packaging, especially in the optical industry which has higher requirements for the transparency of the winding film. Currently, the existing winding films are mainly single-layer or double-layer, with C4 polyethylene as the main raw material, resulting in poor transparency, low tensile strength, and weak puncture resistance.

[0003] Therefore, the present utility model is precisely generated based on the above deficiencies.

Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an optical winding film with a simple structure, good transparency, good tensile strength, and good toughness.

[0005] The present utility model is realized through the following technical solutions:

[0006] An optical winding film, characterized in that: it includes a low-pressure linear polyethylene layer 1, one side of the low-pressure linear polyethylene layer 1 is provided with a high-transparency mixed layer 2 for enhancing the transparency of the film, one side of the high-transparency mixed layer 2 away from the low-pressure linear polyethylene layer 1 is provided with a metallocene mixed layer 3 for enhancing the elastic tensile force of the film, one side of the metallocene mixed layer 3 away from the high-transparency mixed layer 2 is provided with an enhanced mixed layer 4 for improving the toughness and transparency of the film, and the low-pressure linear polyethylene layer 1, the high-transparency mixed layer 2, the metallocene mixed layer 3, and the enhanced mixed layer 4 are thermally pressed and bonded together.

[0007] The optical winding film as described above, characterized in that: the material of the high-transparency mixed layer 2 is low-pressure linear polyethylene and high-pressure polyethylene.

[0008] The optical winding film as described above, characterized in that: the mixing ratio of low-pressure linear polyethylene to high-pressure polyethylene in the high-transparency mixed layer 2 is 1:1.

[0009] The optical winding film as described above, characterized in that: the material of the metallocene mixed layer 3 is low-pressure linear polyethylene and metallocene polyethylene.

[0010] The optical winding film as described above, characterized in that: the mixing ratio of low-pressure linear polyethylene to metallocene polyethylene in the metallocene mixed layer 3 is 1:1.

[0011] The optical industry winding film as described above is characterized in that the reinforcing mixed layer 4 is made of low-pressure linear polyethylene and polyolefin elastomer.

[0012] The optical industry winding film as described above is characterized in that the thickness ratio of the low-pressure linear polyethylene layer 1, the high-transparency mixed layer 2, the metallocene mixed layer 3, and the reinforcing mixed layer 4 is 1:6:2:1, and the thickness of the low-pressure linear polyethylene layer 1 is 10 microns.

[0013] The optical industry winding film as described above is characterized in that the high-pressure polyethylene is LDPE 2426, and the low-pressure linear polyethylene is LLDPE 1002.

[0014] The optical industry winding film as described above is characterized in that the metallocene polyethylene is MVLDPE 2010, and the low-pressure linear polyethylene is LLDPE 1002.

[0015] The optical industry winding film as described above is characterized in that the polyolefin elastomer is POE VM6102, and the low-pressure linear polyethylene is LLDPE 1002.

[0016] Compared with the prior art, the present utility model has the following advantages:

[0017] 1. The present utility model adopts the cooperation of a low-pressure linear polyethylene layer, a high-transparency mixed layer, a metallocene mixed layer, and a reinforcing mixed layer, so that the optical industry winding film has outstanding properties such as high transparency, good tensile strength, high toughness, and tear resistance. Moreover, while the high-transparency mixed layer, the metallocene mixed layer, and the reinforcing mixed layer ensure relatively good transparency, tensile properties, and toughness by adding high-pressure polyethylene, metallocene polyethylene, and polyolefin elastomer, the production cost is reduced by mixing linear low-density polyethylene, making the product have higher market competitiveness.

Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present utility model.

Detailed Embodiment

[0019] The present utility model will be further described below in conjunction with the drawings:

[0020] Such as Figure 1As shown in the figure, an optical winding film includes a low-pressure linear polyethylene layer 1. On one side of the low-pressure linear polyethylene layer 1, there is a high-transparency hybrid layer 2 for enhancing the transparency of the film. On the side of the high-transparency hybrid layer 2 away from the low-pressure linear polyethylene layer 1, there is a metallocene hybrid layer 3 for enhancing the elastic tensile force of the film. On the side of the metallocene hybrid layer 3 away from the high-transparency hybrid layer 2, there is an enhanced hybrid layer 4 for improving the toughness and transparency of the film. Specifically, the low-pressure linear polyethylene layer 1, the high-transparency hybrid layer 2, the metallocene hybrid layer 3, and the enhanced hybrid layer 4 are thermally pressed and bonded together. The utility model uses the cooperation of the low-pressure linear polyethylene layer, the high-transparency hybrid layer, the metallocene hybrid layer, and the enhanced hybrid layer, so that the optical winding film has outstanding properties such as high transparency, good tensile strength, high toughness, and tear resistance. Moreover, while the high-transparency hybrid layer, the metallocene hybrid layer, and the enhanced hybrid layer ensure relatively good transparency, tensile properties, and toughness by adding high-pressure polyethylene, metallocene polyethylene, and polyolefin elastomer, the production cost is reduced by mixing linear low-density polyethylene, making the product more competitive in the market.

[0021] Specifically, the material of the high-transparency hybrid layer 2 is low-pressure linear polyethylene and high-pressure polyethylene. Among them, the high-pressure polyethylene is LDPE 2426, which has high transparency and good processing performance. When added to this optical winding film, it can endow the winding film with good transparency; the low-pressure linear polyethylene is LLDPE 1002, also known as low-pressure linear polyethylene 1002, which has good physical and chemical properties, such as good strength, good toughness, heat resistance, environmental stress cracking resistance, and resistance to acids and alkalis. As a thin-film grade low-density polyethylene, it has the ability to reduce the cost of the film. The low-pressure linear polyethylene layer 1 is also made of low-pressure linear polyethylene 1002.

[0022] In practical applications, the mixing ratio of low-pressure linear polyethylene to high-pressure polyethylene in the high-transparency hybrid layer 2 is 1:1, which can reduce the production cost while ensuring good transparency performance.

[0023] Specifically, the material of the metallocene hybrid layer 3 is low-pressure linear polyethylene and metallocene polyethylene. Among them, the low-pressure linear polyethylene is LLDPE 1002, and the metallocene polyethylene is MVLDPE 2010. In specific implementations, ExxonMobil Enable2010 can be selected. MVLDPE 2010 has excellent stretchability, high impact strength, and good puncture resistance. The metallocene hybrid layer added with MVLDPE 2010 can enhance the elastic tensile force of this winding film, enabling the film to withstand greater tensile force;

[0024] In practical applications, the mixing ratio of low-pressure linear polyethylene to metallocene polyethylene in the metallocene hybrid layer 3 is 1:1, which can reduce the production cost while ensuring good tear resistance and puncture resistance.

[0025] Specifically, the material of the enhanced hybrid layer 4 is low-pressure linear polyethylene and polyolefin elastomer. The low-pressure linear polyethylene is LLDPE 1002, and the polyolefin elastomer is POE VM6102. ExxonMobil Vistamaxx 6102FL is selected, which has excellent transparency, elasticity, flexibility and toughness. The enhanced hybrid layer added with elastomer 6102 can enhance the toughness of this winding film and further enhance the transparency of this winding film.

[0026] Specifically, the thickness ratio of the low-pressure linear polyethylene layer 1, the high-transparency hybrid layer 2, the metallocene hybrid layer 3, and the enhanced hybrid layer 4 is 1:6:2:1. If the thickness of the low-pressure linear polyethylene layer 1 is 10 microns, the thickness of the high-transparency hybrid layer 2 is 60 microns, the thickness of the metallocene hybrid layer 3 is 20 microns, and the thickness of the enhanced hybrid layer 4 is 10 microns. At the above thickness ratio, the overall transparency, tensile properties and toughness of this winding film are good, and the production cost is relatively low.

Claims

1. An optical winding film, characterized in that: It includes a low-pressure linear polyethylene layer (1). On one side of the low-pressure linear polyethylene layer (1), there is a high-transparency hybrid layer (2) for enhancing the transparency of the film. On the side of the high-transparency hybrid layer (2) away from the low-pressure linear polyethylene layer (1), there is a metallocene hybrid layer (3) for enhancing the elastic tensile force of the film. On the side of the metallocene hybrid layer (3) away from the high-transparency hybrid layer (2), there is an enhanced hybrid layer (4) for improving the toughness and transparency of the film. The low-pressure linear polyethylene layer (1), the high-transparency hybrid layer (2), the metallocene hybrid layer (3), and the enhanced hybrid layer (4) are thermally pressed and bonded together; the thickness ratio of the low-pressure linear polyethylene layer (1), the high-transparency hybrid layer (2), the metallocene hybrid layer (3), and the enhanced hybrid layer (4) is 1:6:2:1, and the thickness of the low-pressure linear polyethylene layer (1) is 10 microns.

2. The optical winding film according to claim 1, wherein: The high-transparency hybrid layer (2) is made of low-pressure linear polyethylene and high-pressure polyethylene.

3. The optical use winding film according to claim 1, characterized in that: The metallocene hybrid layer (3) is made of low-pressure linear polyethylene and metallocene polyethylene.

4. The optical-use winding film according to claim 1, wherein: The enhanced hybrid layer (4) is made of low-pressure linear polyethylene and polyolefin elastomer.

5. The optical-use winding film according to claim 2, characterized in that: The high-pressure polyethylene is LDPE2426, and the low-pressure linear polyethylene is LLDPE 1002.

6. The optically used winding film according to claim 3, characterized in that: The metallocene polyethylene is MVLDPE2010, and the low-pressure linear polyethylene is LLDPE1002.

7. The optical-use winding film according to claim 4, wherein: The polyolefin elastomer is POEVM6102, and the low-pressure linear polyethylene is LLDPE 1002.

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