Degradable biaxially oriented polypropylene cigarette packaging film and manufacturing method thereof

A technology of biaxial stretching and polypropylene, which is applied in the field of new polymer materials, can solve the problems of dull and yellowish degraded films, performance degradation, and difficulties in popularization, and achieve good degradability effects

Active Publication Date: 2013-03-06
HAINAN SHINER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current degradable films generally have problems such as dull yellowing, low transparency, high price, and performance degradation. It is extremely difficult to promote and the prospect is not optimistic.
In particular, cigarette packaging film is

Method used

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  • Degradable biaxially oriented polypropylene cigarette packaging film and manufacturing method thereof

Examples

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Example Embodiment

[0026] Example 1

[0027] Ingredients: Produce a film with a thickness of 18 μm. The thickness of the upper layer is 0.8μm, of which the content of binary copolymerized polypropylene is 96%, 0.8% of cross-linked methyl acrylate, 2.9% of silicone, and 0.3% of sodium stearate; the thickness of the middle layer is 16.4μm, which contains 0.5~0.8% of ethylene mono The propylene-ethylene random copolymer content of the body is 73.7%, hydrogenated resin 25%, glycerol monostearate 1.0%, sodium stearate 0.3%; the thickness of the lower layer is 0.8 μm, and the content of binary copolymerized polypropylene is 98.9% , cross-linked methyl acrylate 0.8%, sodium stearate 0.3%.

[0028] Film making: The degradable biaxially stretched polypropylene cigarette film packaging film of the present invention is produced by biaxially stretching co-extrusion process, wherein the extruder temperature: 220°C; casting machine temperature: 23°C; longitudinal stretch ratio: 490 %, longitudinal stretchin...

Example Embodiment

[0029] Example 2

[0030] Ingredients: Produce a film with a thickness of 19 μm. The thickness of the upper layer is 0.9μm, of which the content of binary copolymerized polypropylene is 96.5%, 0.7% of cross-linked methyl acrylate, 2.6% of silicone, and 0.2% of sodium stearate; the thickness of the middle layer is 17.2μm, which contains 0.5~0.8% of ethylene mono The propylene-ethylene random copolymer content of the body is 78.7%, hydrogenated resin 23%, glycerol monostearate 1.5%, sodium stearate 0.2%; the thickness of the lower layer is 0.9 μm, and the content of binary copolymerized polypropylene is 99.1% , cross-linked methyl acrylate 0.7%, sodium stearate 0.2%.

[0031] Film making: The degradable biaxially stretched polypropylene cigarette film packaging film of the present invention is produced by using a biaxially stretched co-extrusion process, wherein the temperature of the extruder: 223°C; the temperature of the casting machine: 21°C; the longitudinal stretch ratio:...

Example Embodiment

[0032] Example 3

[0033] Ingredients: Produce a film with a thickness of 20 μm. The thickness of the upper layer is 1.0 μm, of which the content of binary copolymerized polypropylene is 96.5%, 0.6% of cross-linked methyl acrylate, 2.7% of silicone, and 0.2% of sodium stearate; the thickness of the middle layer is 18 μm, which contains 0.5~0.8% of vinyl monomer The content of propylene-ethylene random copolymer is 78.7%, hydrogenated resin is 22%, glycerol monostearate is 1.0%, sodium stearate is 0.2%; the thickness of the lower layer is 1 μm, and the content of binary copolymerized polypropylene is 99.2%. Methyl diacrylate 0.6%, sodium stearate 0.2%.

[0034] Film making: The degradable biaxially stretched polypropylene cigarette film packaging film of the present invention is produced by using a biaxially stretched co-extrusion process, wherein the temperature of the extruder: 230°C; the temperature of the casting machine: 20°C; the longitudinal stretch ratio: 520 %, longi...

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Abstract

The invention relates to a degradable biaxially oriented polypropylene cigarette packaging film. The packaging film is in a triple-layer structure and comprises an upper layer, a middle layer and a lower layer, wherein the total thickness of the packaging film is 18-22 mum. The upper layer is prepared by the following compositions by weight content: 96-98.5% of binary co-polypropylene, 0.3-0.8% of anti-blocking agent, 1-3% of slip agent and 0.1-0.3% of degradation agent; the middle layer is prepared by the following compositions by weight content: 72-84% of polypropylene resin, 15-25% of hydrogenated resin, 0.5-2% of antistatic agent and 0.1-0.3% of degradation agent; and the lower layer is prepared by the following compositions by weight content: 98.9-99.5% of binary co-polypropylene, 0.3-0.8% of anti-blocking agent and 0.1-0.3% of degradation agent. The degradable biaxially oriented polypropylene cigarette packaging film has good biodegradability and only needs 20 days to be completely cracked under the condition of solarization temperature of 60 DEG C.

Description

Technical field [0001] The invention relates to a degradable biaxially stretched polypropylene cigarette packaging film and a manufacturing method thereof, which belong to the field of new polymer materials. Background technique [0002] The annual consumption of cigarette packaging film is more than 70,000 tons nationwide. The environmental pollution of discarded cigarette packaging film after consumption is obvious. As people pay more and more attention to environmental protection, there is a requirement for the degradation of cigarette packaging film. At present, there are three types of plastic degradation methods: photodegradation, biodegradation and photo-biodegradation. However, the current degradable films generally have problems such as dull yellowing, low transparency, high price, and performance degradation. It is extremely difficult to promote and the prospect is not optimistic. In particular, cigarette packaging film is a high-end product packaging film. The sp...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/18C08L23/14C08K5/098C08L23/16C08K5/103B29C69/02B29C55/14B29C47/92B65D65/40B29C48/92
CPCB29C48/08B29C48/92B29C2948/92704B29C2948/92895B29C2948/92923
Inventor 邢青涛冯任明
Owner HAINAN SHINER IND
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