Antistatic PE film-like packaging material

Abstract

The invention discloses an antistatic PE (polyethylene) film-like packaging material which comprises the following raw materials in parts by mass: 85-97 parts of HDPE (high-density polyethylene) and 3-15 parts of cationic antistatic master batch, the surface resistivity of the PE film-like packaging material is relatively small, the PE film-like packaging material has relatively strong antistatic capability and is conveniently processed into a packaging bag subsequently, and a PE film has certain antibacterial performance.

Description

Technical Field

[0001] The invention relates to the field of packaging materials, in particular to an antistatic PE film packaging material. Background Art

[0002] PE film materials are prone to static electricity during processing, which makes it inconvenient to further process PE film materials into packaging bags, and the static electricity effect will also affect the printing effect of PE film materials. When using packaging bags processed from PE film materials, it will also be difficult to open due to static electricity interference. Therefore, how to reduce the static electricity potential of PE film is of great significance.

[0003] For example, the Chinese patent with the announcement number CN115710392A discloses a high-barrier, high-strength, degradable and multifunctional PE film for bags, which includes, by weight: 75-85 parts of high-density polyethylene, 35-45 parts of low-density polyethylene, 20-40 parts of polylactic acid, 18-25 parts of plasticizer, 12-19 parts of modified ultrafine barite powder, 1.2-2.4 parts of antioxidant and 0.5-2 parts of stabilizer. The above PE film may have static electricity, making the bag mouth difficult to open.

[0004] In view of this, the present invention proposes an antistatic PE film packaging material to solve the above problems. Summary of the invention

[0005] In order to overcome the deficiencies of the above-mentioned technology, the present invention provides an antistatic PE film packaging material, which has excellent antistatic ability and is convenient for subsequent processing into packaging bags.

[0006] An electrostatic PE film packaging material comprises the following raw materials in parts by weight: 85 to 97 parts of HDPE and 3 to 15 parts of cationic antistatic masterbatch.

[0007] Preferably, the PE film packaging material comprises the following raw materials in parts by mass: 92 to 97 parts of HDPE and 3 to 8 parts of cationic antistatic masterbatch.

[0008] Preferably, the cationic antistatic masterbatch comprises a quaternary ammonium salt compound.

[0009] Preferably, the PE film packaging material is produced through an extrusion film blowing system; the film blowing system comprises a feeding section, a compression section, a plasticizing section, and a blow molding die.

[0010] Preferably, the temperature of the feeding section is 220°C.

[0011] Preferably, the temperature of the compression section is 260°C.

[0012] Preferably, the temperature of the plasticizing section is 285°C.

[0013] Preferably, the temperature at the blow molding die is 220°C.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. PE film is prone to generate static electricity, which will affect the printing quality of the PE film surface and affect the cutting and sealing of the PE film into packaging bags. Moreover, during the use of PE packaging bags, if there is static electricity, the bag mouth of the PE packaging bag is difficult to open. Therefore, the PE film packaging material of the present invention includes a cationic antistatic masterbatch, which can significantly reduce the surface resistance of the PE material, effectively prevent the accumulation and discharge of static electricity, and thus prevent the above inconveniences from occurring.

[0016] 2. Cationic antistatic masterbatch is a quaternary ammonium salt compound, which can also make PE film packaging materials have certain antibacterial properties. DETAILED DESCRIPTION

[0017] The features of the present invention and other related features are further described in detail below through embodiments to facilitate understanding by those skilled in the art:

[0018] An antistatic PE film packaging material comprises the following raw materials in parts by weight: 85 to 97 parts of HDPE and 3 to 15 parts of cationic antistatic masterbatch.

[0019] In some embodiments, the PE film packaging material comprises the following raw materials in parts by weight: 92 to 97 parts of HDPE and 3 to 8 parts of cationic antistatic masterbatch.

[0020] In some embodiments, the cationic antistatic masterbatch includes a quaternary ammonium salt compound.

[0021] In some embodiments, the PE film packaging material is produced by an extrusion film blowing system; the film blowing system includes a feeding section, a compression section, a plasticizing section, and a blowing die.

[0022] In some embodiments, the temperature of the feeding section is 220°C.

[0023] In some embodiments, the temperature of the compression section is 260°C.

[0024] In some embodiments, the temperature of the plasticizing section is 285°C.

[0025] In some embodiments, the temperature at the blow die is 220°C.

[0026] Example 1 of the present invention provides an antistatic PE film packaging material, which is prepared by an extrusion film blowing system. First, 97 parts of HDPE and 3 parts of cationic antistatic masterbatch are mixed and added to the feeding section of the extrusion film blowing system. The temperature during the feeding section is 220° C. Then, the raw material of the packaging paper is sequentially passed through a compression section at 260° C., a plasticizing section at 285° C., and finally blown into a film at a blowing die at 220° C.

[0027] Example 2 of the present invention provides an antistatic PE film packaging material, which is prepared by an extrusion film blowing system. First, 95 parts of HDPE and 5 parts of cationic antistatic masterbatch are mixed and added to the feeding section of the extrusion film blowing system. The temperature during the feeding section is 220° C. Then, the raw material of the packaging paper is sequentially passed through a compression section at 260° C., a plasticizing section at 285° C., and finally blown into a film at a blowing die at 220° C.

[0028] Example 3 of the present invention provides an antistatic PE film packaging material, which is prepared by an extrusion film blowing system. First, 92 parts of HDPE and 8 parts of cationic antistatic masterbatch are mixed and added to the feeding section of the extrusion film blowing system. The temperature during the feeding section is 220° C. Then, the raw material of the packaging paper is sequentially passed through a compression section at 260° C., a plasticizing section at 285° C., and finally blown into a film at a blowing die at 220° C.

[0029] Example 4 of the present invention provides an antistatic PE film packaging material, which is prepared by an extrusion film blowing system. First, 90 parts of HDPE and 10 parts of cationic antistatic masterbatch are mixed and added to the feeding section of the extrusion film blowing system. The temperature during the feeding section is 220° C. Then, the raw material of the packaging paper is sequentially passed through a compression section at 260° C., a plasticizing section at 285° C., and finally blown into a film at a blowing die at 220° C.

[0030] Example 5 of the present invention provides an antistatic PE film packaging material, which is prepared by an extrusion film blowing system. First, 85 parts of HDPE and 15 parts of cationic antistatic masterbatch are mixed and added to the feeding section of the extrusion film blowing system. The temperature during the feeding section is 220° C. Then, the raw material of the packaging paper is sequentially passed through a compression section at 260° C., a plasticizing section at 285° C., and finally blown into a film at a blowing die at 220° C.

[0031] Comparative Example 1 of the present invention provides an antistatic PE film packaging material, which is prepared by an extrusion film blowing system, wherein 100 parts of HDPE are added to a feeding section of the extrusion film blowing system, and the temperature during the feeding section is 220° C. Thereafter, the raw material of the packaging paper is sequentially passed through a compression section at 260° C., a plasticization section at 285° C., and finally blown into a film at a blowing die at 220° C.

[0032] 1. Antistatic performance test, the test process is as follows: four metal probes with equal spacing are placed on the surface of the PE film packaging material, two of which are used to pass current, and the other two are used to measure voltage. By measuring the values ​​of current and voltage, the surface resistivity of the PE film is calculated. The smaller the surface resistivity of the material, the easier it is for the charge to flow and dissipate on its surface, so the material can release the accumulated static charge faster, thus showing a stronger antistatic ability.

[0033] 2. Antibacterial performance test, the test process is as follows: Examples 1 to 5, Comparative Example 1 2 × 2cm 2 The PE films of different sizes were placed in a culture dish with the test bacterial solution, cultured at 37°C under natural light for 12 hours, and the antibacterial rate was calculated. Antibacterial rate = (the number of bacteria on the blank sample - the number of bacteria on comparative example 1) / the number of bacteria on the blank sample × 100%.

[0034] Table 1 Test results of embodiments and comparative examples

[0035]

[0036] 1. By comparing Example 1 with Comparative Example 1, it can be seen that adding 3% cationic antistatic masterbatch to the PE film can significantly reduce the surface resistivity of the PE film, so that the PE film has a strong antistatic ability. Moreover, by comparing Examples 1 to 5, it can be seen that when the amount of cationic antistatic masterbatch is gradually added from 0% to 5%, the surface resistivity of the PE film decreases significantly; when the amount of cationic antistatic masterbatch is gradually added from 5% to 15%, the surface resistivity of the PE film gradually slows down; and when the content of cationic antistatic masterbatch in the PE film exceeds 8%, the tensile strength and impact strength of the PE film will be reduced. In summary, the mass fraction of cationic antistatic masterbatch in the PE film is preferably 3 to 8%.

[0037] 2. The cationic antistatic masterbatch of the present invention is a quaternary ammonium salt compound. By comparing Examples 1 to 5 with Comparative Example 1, it can be seen that adding a quaternary ammonium salt compound to the PE film can make the PE film have antibacterial properties. The PE film is used to package products, which can inhibit the growth of bacteria in the environment around the product, thereby achieving the effect of protecting the product.

[0038] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. An antistatic PE film packaging material, characterized in that: The invention comprises the following raw materials in parts by weight: 85 to 97 parts of HDPE and 3 to 15 parts of cationic antistatic masterbatch.

2. The antistatic PE film packaging material according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 92 to 97 parts of HDPE and 3 to 8 parts of cationic antistatic masterbatch.

3. The antistatic PE film packaging material according to claim 1, characterized in that: The cationic antistatic masterbatch comprises a quaternary ammonium salt compound.

4. The antistatic PE film packaging material according to claim 1 is made by an extrusion film blowing system; the film blowing system includes a feeding section, a compression section, a plasticizing section, and a blowing die.

5. The antistatic PE film packaging material according to claim 4, characterized in that: The temperature of the feeding section is 220°C.

6. The antistatic PE film packaging material according to claim 4, characterized in that: The temperature of the compression section was 260°C.

7. The antistatic PE film packaging material according to claim 4, characterized in that: The temperature of the plasticizing section is 285°C.

8. The antistatic PE film packaging material according to claim 4, characterized in that: The temperature at the blow mold mouth was 220°C.

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