Rust-proof anti-fog PE shrink film and processing method thereof

Abstract

The invention relates to a rust-proof anti-fog PE shrink film and a processing method thereof. The rust-proof anti-fog PE shrink film sequentially comprises an outer layer, a middle layer and an innerlayer from outside to inside, the outer layer is prepared from the following raw materials in parts by weight: 350 to 550 parts of LDPE, 150 to 300 parts of HDPE, 150 to 300 parts of mLLDPE, 10 to 30parts of a delustering agent, 5 to 15 parts of white carbon black and 10 to 30 parts of a compatilizer; the middle layer is prepared from the following raw materials in parts by weight: 400 to 600 parts of LDPE, 150 to 300 parts of HDPE, 150 to 300 parts of mLLDPE, 100 to 200 parts of an antirust agent, 15 to 35 parts of a delustering agent and 10 to 30 parts of a compatilizer; the delustering agent is a fluorine-containing elastomer; the PE shrink film provided by the invention has excellent antirust and antifogging properties.

Description

technical field [0001] The invention relates to the technical field of shrink films, in particular to an anti-rust and anti-fog PE shrink film and a processing method thereof. Background technique [0002] The coating film of the product outer packaging plays an important role in the storage, quality assurance and beautification of the product itself. At present, the coating film used in the domestic packaging market is more commonly used as PE shrink film. This product has the advantages of good flexibility, strong impact resistance, strong tear resistance, not easy to break, and large shrinkage rate. [0003] The traditional PE shrink film used in the packaging market is a film blown by a single-layer blown film machine. Due to its small shrinkage rate and shrinkage force, various functions are not complete. For example, the invention patent application of CN1285663C discloses a high-transparency polyethylene heat-shrinkable film, which consists of 4-6 parts by weight of ...

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Problems solved by technology

[0005] However, the above-mentioned publication number is that the prior art of CN 101318392A has the following defects: first, although the antirust masterbatch is added, only the inner layer resin film contains the antirust masterbatch, and the middle layer and the outer layer resin film are not added. , when the humidity in the external environment is high, it will cause moisture to easily adhere to the surface of the shrink film and cause fogging, making the packaged objects easy to absorb moisture and corrode or rust; second, only the inner resin film contains anti-rust Masterbatch, when the temperature difference between the inside and outside of the shrink film is large, the surface of the shrink film is prone to fogging, which is not conducive to the safe storage of the packaged objects, but also affects the appearance of the package, and also reduces the applicability of the shrink film; The rust masterbatch is VCI antirust masterbatch, the compatibility of its effective antirust components with the matrix resin is limited, and it is likely that more effective antirust components cannot be dissolved in the matrix resin and precipitate on the surface of the film, thereby affecting shrinkage The surface state of the film and the heat-sealing anti-rust performance, when the packaged object is made of metal, it is prone to rust, which will affect the quality of the packaged object

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