Winding film for electronic industry

Abstract

The utility model discloses a wrapping film for the electronic industry, which comprises an antistatic layer, a transparent layer capable of enhancing the transparency of the film is arranged on one side of the antistatic layer, and a metallocene polyethylene layer for enhancing the elastic tension of the film is arranged on one side, far away from the antistatic layer, of the transparent layer. A reinforcing layer for improving the toughness and transparency of the film is arranged on one side, far away from the transparent layer, of the metallocene polyethylene layer, and the antistatic layer, the transparent layer, the metallocene polyethylene layer and the reinforcing layer are bonded through hot pressing. The antistatic layer, the transparent layer, the metallocene polyethylene layer and the reinforcing layer are matched, so that the wrapping film for the electronic industry has outstanding antistatic performance, high transparency, good tensile strength, high toughness, tear resistance and the like.

Description

Technical field

[0001] The utility model relates to a stretch film for the electronics industry. [Background Technology]

[0002] Stretch film can be wrapped around the exterior of a product, providing stability, coverage, and protection. It is widely used in various industries. When used to wrap electronic products and their components, in addition to providing surface protection against scratches, it also needs to have an antistatic effect to prevent static damage to the product and its components, as well as to prevent the adsorption of dust and impurities. Currently, some antistatic stretch films are available on the market, such as the one disclosed in Chinese Utility Model Patent Application No. 201520658056.6. This type of stretch film comprises an antistatic film substrate layer, a metal layer, and an antistatic coating layer. The metal layer is vacuum-plated onto the outer surface of the antistatic film substrate layer, and the antistatic coating layer is applied to the outer surface of the metal layer. While this type of stretch film provides some antistatic effect, it suffers from poor tensile strength, puncture resistance, and transparency. Furthermore, the presence of the antistatic coating layer on the film surface during use makes the antistatic agent easily lost due to friction and washing, resulting in unsatisfactory durability.

[0003] Therefore, the present invention is just based on above deficiency and produces. [Utility Model Content]

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a stretch film for the electronics industry which has antistatic properties, good transparency, good tensile strength and good toughness.

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

[0006] A wrapping film for the electronics industry, characterized in that it includes an antistatic layer 1, a transparent layer 2 capable of enhancing the transparency of the film is provided on one side of the antistatic layer 1, a metallocene polyethylene layer 3 for enhancing the elastic tension of the film is provided on the side of the transparent layer 2 away from the antistatic layer 1, and a reinforcing layer 4 for improving the toughness and transparency of the film is provided on the side of the metallocene polyethylene layer 3 away from the transparent layer 2. The antistatic layer 1, the transparent layer 2, the metallocene polyethylene layer 3 and the reinforcing layer 4 are thermally pressed and bonded together.

[0007] The stretch film for the electronics industry as described above is characterized in that the antistatic layer 1 is a mixed layer comprising low-pressure linear polyethylene and an antistatic agent.

[0008] The stretch film for the electronics industry as described above is characterized in that the transparent layer 2 is a mixed layer comprising low-pressure linear polyethylene, high-pressure polyethylene and an antistatic agent.

[0009] The stretch film for the electronics industry as described above is characterized in that the reinforcement layer 4 is a mixed layer containing low-pressure linear polyethylene and polyolefin elastomer.

[0010] The stretch film for the electronics industry as described above is characterized in that the metallocene polyethylene layer 3 is made of MVLDPE2010.

[0011] The stretch film for the electronics industry as described above is characterized in that the thickness ratio of the antistatic layer 1, the transparent layer 2, the metallocene polyethylene layer 3 and the reinforcement layer 4 is 1:6:2:1, and the thickness of the antistatic layer 1 is 10 microns.

[0012] The stretch film for the electronics industry as described above is characterized in that the low-pressure linear polyethylene is LLDPE 7042.

[0013] The stretch film for the electronics industry as described above is characterized in that the low-pressure linear polyethylene is LLDPE 1002 and the high-pressure polyethylene is LDPE 2420.

[0014] The stretch film for the electronics industry is characterized in that the polyolefin elastomer is POE VM6102 and the low-pressure linear polyethylene is LLDPE 1002.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. The utility model adopts an antistatic layer, a transparent layer, a metallocene polyethylene layer and a reinforcement layer to make the stretch film for the electronics industry have outstanding antistatic, high transparency, good tensile strength, high toughness, and tear resistance.

[0017] 2. Antistatic agent is further mixed into the transparent layer. Through the simultaneous action of the antistatic layer and the transparent layer, the antistatic effect of the electronic industry stretch film is enhanced, and the generation and spread of static electricity is better prevented.

Brief Description of the Drawings

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

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figure 1The figure shows a stretch film for the electronics industry, comprising an antistatic layer 1, a transparent layer 2 for enhancing the film's transparency disposed on one side of the antistatic layer 1, a metallocene polyethylene layer 3 for enhancing the film's elastic tensile strength disposed on the side of the transparent layer 2 facing away from the antistatic layer 1, and a reinforcing layer 4 for improving the film's toughness and transparency disposed on the side of the metallocene polyethylene layer 3 facing away from the transparent layer 2. The antistatic layer 1, transparent layer 2, metallocene polyethylene layer 3, and reinforcing layer 4 are bonded together by heat-pressing. The combination of the antistatic layer, transparent layer, metallocene polyethylene layer, and reinforcing layer results in a stretch film for the electronics industry with outstanding antistatic properties, high transparency, good tensile strength, high toughness, and tear resistance.

[0021] Specifically, the antistatic layer 1 is a mixed layer comprising low-pressure linear polyethylene (LDPE) and an antistatic agent. The low-pressure linear polyethylene in the antistatic layer 1 is LLDPE 7042, which has low density, high toughness, and abrasion resistance. As a component of the antistatic layer 1, LLDPE 7042 imparts high softness and elasticity to the film surface, enabling it to withstand significant tensile forces without breaking. Furthermore, LLDPE 7042 is a relatively stable polymer material, and mixing with the antistatic agent does not affect their performance. The antistatic agent can be selected from commonly available commercial antistatic agents, such as ethoxyalkylamines and fatty acid esters.

[0022] Specifically, transparent layer 2 is a mixed layer containing low-pressure linear polyethylene, high-pressure polyethylene, and an antistatic agent. The high-pressure polyethylene is LDPE 2420, which has high transparency and good processability. When added to this electronic stretch film, it imparts excellent transparency. The low-pressure linear polyethylene is LLDPE 1002, also known as low-pressure linear polyethylene 1002. It has excellent physical and chemical properties, such as strength, toughness, heat resistance, environmental stress cracking resistance, and acid and alkali tolerance. As a film-grade low-density polyethylene, it can reduce film costs. The antistatic agent is further mixed into this transparent layer 2. The simultaneous action of the antistatic layer 1 and the transparent layer 2 enhances the antistatic effect of this electronic stretch film, effectively preventing the generation and spread of static electricity.

[0023] Specifically, the reinforcement layer 4 is a blend of low-pressure linear polyethylene (LLDPE) and polyolefin elastomer (POE). The LLDPE is LLDPE 1002, and in practice, Exxon LL1002YB can be used. The polyolefin elastomer is POEVM 6102, and Exxon Vistamaxx 6102FL is used. This polyolefin elastomer exhibits excellent transparency, elasticity, flexibility, and toughness. The addition of POE 6102 to the reinforced blended layer enhances the toughness and transparency of the stretch film. While maintaining excellent toughness, the present invention reduces production costs by incorporating LLDPE, making the product more competitive in the market.

[0024] Specifically, the metallocene polyethylene layer 3 is made of MVLDPE 2010. ExxonMobil Enable 2010 can be used in specific implementations. MVLDPE 2010 has excellent tensile properties, high impact strength, and good puncture resistance. The addition of the MVLDPE 2010 metallocene hybrid layer enhances the elastic tensile strength of the stretch film, allowing the film to withstand greater tensile forces.

[0025] Specifically, the thickness ratio of the antistatic layer 1, the transparent layer 2, the metallocene polyethylene layer 3 and the reinforcing layer 4 is 1:6:2:1. The thickness of the antistatic layer 1 is 10 microns, the thickness of the transparent layer 2 is 60 microns, the thickness of the metallocene polyethylene layer 3 is 20 microns, and the thickness of the reinforcing layer 4 is 10 microns. Under the above thickness ratio, the overall antistatic effect, transparency, tensile properties and toughness of the wrapping film are good, and the production cost is low.

Claims

1. A stretch film for the electronics industry, characterized by: The invention comprises an antistatic layer (1), a transparent layer (2) capable of enhancing the transparency of the film is provided on one side of the antistatic layer (1), a metallocene polyethylene layer (3) for enhancing the elastic tension of the film is provided on the side of the transparent layer (2) away from the antistatic layer (1), and a reinforcing layer (4) for improving the toughness and transparency of the film is provided on the side of the metallocene polyethylene layer (3) away from the transparent layer (2), and the antistatic layer (1), the transparent layer (2), the metallocene polyethylene layer (3) and the reinforcing layer (4) are thermally pressed and bonded to each other.

2. The stretch film for the electronics industry according to claim 1, characterized in that: The metallocene polyethylene layer (3) is made of MVLDPE 2010.

3. The stretch film for the electronics industry according to claim 1, characterized in that: The thickness ratio of the antistatic layer (1), the transparent layer (2), the metallocene polyethylene layer (3) and the reinforcing layer (4) is 1:6:2:1, and the thickness of the antistatic layer (1) is 10 microns.

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