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Ultraviolet-proof and biodegradable packaging film
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A biodegradable and ultraviolet technology, applied in the field of packaging film, can solve the problem of poor anti-ultraviolet ability, achieve good physical and mechanical properties, strong ultraviolet blocking rate, and long-term packaging protection effect
Active Publication Date: 2015-02-11
大连华诺塑胶科技有限公司
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For example, its anti-ultraviolet ability is not as good as the film described in the disclosed CN102248728A a kind of anti-ultraviolet biaxially stretched polypropylene film and its manufacturing process
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example 1
[0025] Take 2.5 parts of 2-hydroxy-4-n-octyloxybenzophenone, 3 parts of 2,4,6-tris(2'n-butoxyphenyl)-1,3,5-triazine, 1 part of 2 -(2'-Hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole and 1.5 parts of 4-benzoyloxy-2,2,6,6-tetramethylpiper Pyridine, added to a high-speed mixer for mixing and compounding, then granulated, and then dried in an electric dryer at 60°C for 8 hours to make an anti-ultraviolet compound agent for use.
[0026] Take 60 parts of poly-β-hydroxybutyric acid (product of Jiangsu Nantian Group Co., Ltd.) and 40 parts of β-hydroxyvaleric acid (Ningbo Tianan Biomaterials Co., Ltd.), add them to a high-speed mixer for mixing and compounding, and then granulate them. Use an electric dryer to dry at 60°C for 8 hours to prepare poly-β-hydroxybutyric acid and β-hydroxyvaleric acid copolymer for later use.
[0027] Take 100 parts of poly-β-hydroxybutyric acid and β-hydroxyvaleric acid copolymer, 5 parts of aluminum powder (product of Angang Industrial Fine A...
example 2
[0031] Take 2.5 parts of 2-hydroxy-4-n-octyloxybenzophenone, 3 parts of 2,4,6-tris(2'n-butoxyphenyl)-1,3,5-triazine, 1 part of 2 -(2'-Hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole and 1.5 parts of 4-benzoyloxy-2,2,6,6-tetramethylpiper Pyridine, added to a high-speed mixer for mixing and compounding, then granulated, and then dried in an electric dryer at 60°C for 8 hours to make an anti-ultraviolet compound agent for use.
[0032] Take 60 parts of poly-β-hydroxybutyric acid (product of Jiangsu Nantian Group Co., Ltd.) and 40 parts of β-hydroxyvaleric acid (Ningbo Tianan Biomaterials Co., Ltd.), add them to a high-speed mixer for mixing and compounding, and then granulate them. Use an electric dryer to dry at 60°C for 8 hours to prepare poly-β-hydroxybutyric acid and β-hydroxyvaleric acid copolymer for later use.
[0033] Take 100 parts of poly-β-hydroxybutyric acid and β-hydroxyvaleric acid copolymer, 5 parts of aluminum powder (product of Angang Industrial Fine A...
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Abstract
The invention provides an ultraviolet-proof and biodegradable packaging film. The packaging film comprises a biodegradable ultraviolet reflecting layer and a photodegradable ultraviolet absorbing layer, wherein the biodegradable ultraviolet reflecting layer is prepared from a poly(beta-hydroxybutyric acid)-beta-hydroxypentanoic acid copolymer, aluminum powder, lubricant paraffin, a calcium-zinc compound stabilizer and maleic anhydride, and the photodegradable ultraviolet absorbing layer is prepared from an ethylene-carbon monoxidecopolymer, an anti-ultraviolet mixture, titanium dioxide and the lubricant paraffin, wherein the thickness ratio of the biodegradable ultraviolet reflecting layer to the photodegradable ultraviolet absorbing layer is 1:(1-3), and the thickness of the photodegradable ultraviolet absorbing layer ranges from 0.005mm-0.12mm. The ultraviolet-proof and biodegradable packaging film is capable of rejecting more than 90% of ultraviolet, has excellent mechanical and physical properties, and can be degraded 100% without any pollution on the environment.
Description
technical field [0001] The invention relates to a packaging material, especially a packaging film. Background technique [0002] Polyethyleneplastic film is the preferred packaging material in the packaging industry. At present, the per capita consumption of packaging materials in the world is 145kg / year, of which plastic products account for about 10% to 15%, which is a huge amount. Waste plastics have caused serious pollution to the environment. Therefore, degradable packaging plastics and packaging products are on the rise. For example, CN102924890 has disclosed a fully biodegradable heat-shrinkable film and its preparation method. This invention solves the problem of non-degradable heat-shrinkable film and plays a role in protecting the environment, but it does not take into account the decomposition and endowment of the film during use. Questions about other functions. For example, its anti-ultraviolet ability is not as good as that disclosed in CN102248728A, a kin...
Claims
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