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Polyethylene resin film
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A technology of polyethylene-based resin and ethylene, applied in the field of polyethylene-based resin film
Inactive Publication Date: 2012-07-18
SUMITOMO CHEM CO LTD
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[0005] However, when a polyethylene-based resin film is manufactured using a resin composition as described in Japanese Patent Laid-Open No. 2005-232228, it cannot be said that the resulting film has a sufficient balance of impact strength, rigidity, light-reducing properties, and ease of cutting
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Embodiment 1， Embodiment 3， Embodiment 4
[0136] A mixture obtained by simultaneously mixing component (A), component (B) and component (C) at the composition ratios listed in Table 1 was melt-kneaded at 190° C. using an extruder having a screw diameter of 40 mm, to obtain a resin composition.
[0137] Subsequently, using a blown film forming machine (manufactured by Placo. Co., Ltd., a single-screw extruder (diameter 30 mmφ, L / D = 28) with a full-flight screw and a die (die diameter 50 mmφ, die Lip gap 0.8 mm), double slit balloon) under the process conditions of temperature of 190 ℃, extrusion rate of 5.5 kg / hr, cooling line distance (FLD) of 200 mm and inflation ratio of 1.8, the resin composition Films were molded to a thickness of 50 microns.
[0138] The evaluation results of the physical properties of these films are shown in Table 1.
Embodiment 2
[0140] A mixture obtained by simultaneously mixing component (A), component (B) and component (C) at the composition ratios listed in Table 1 was melt-kneaded at 190° C. using an extruder having a screw diameter of 40 mm, to obtain a resin composition.
[0141] Subsequently, a film was produced using a flat die film forming machine manufactured by Sumitomo Heavy Industries Modern, Ltd. In the rubber filter plate (φ51 mm) of the extruder with a diameter of 50 mm and L / D of 32 (L is the length of the extruder barrel, D is the diameter of the extruder), clamp it with 80 mesh wire cloth A sintered filter (MFF NF06 manufactured by Nippon seisen Co., Ltd., filter diameter 10 µm) was set in the configuration. The resin composition was melt-kneaded at 220° C., then supplied through a sintered filter into a flat die (600 mm width) whose temperature was adjusted to 220° C., and extruded from this flat die. Thereafter, the extruded composition was cooled and solidified by stretching wi...
Embodiment 5， Embodiment 6
[0143] A resin composition was produced in the same manner as in Example 1. Subsequently, a film having a thickness of 50 micrometers was produced in the same manner as in Example 1 except for using the conditions of an extrusion amount of 8.0 kg / hr and a blow-up ratio of 2.5. The evaluation results of the physical properties of the obtained films are shown in Table 1.
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Abstract
Disclosed is a polyethylene resin film which is formed from a resin composition that contains the component (A), the component (B) and the component (C) described below. When the total of the component (A), the component (B) and the component (C) contained in the resin composition is taken as 100% by mass, the content of the component (A) is 18-40% by mass, the content of the component (B) is 55-77% by mass, and the content of the component (C) is 3-15% by mass. Component (A): an aliphatic polyester Component (B): an ethylene-a-olefin copolymer having a flow activation energy (Ea) of 45-100 kJ / mol Component (C): a compatibilizer for the component (A) and the component (B).
Description
technical field [0001] The present invention relates to a polyethylene-based resin film. Background technique [0002] Conventionally, as films used as packaging materials, films formed of resins such as polyester typified by polyethylene terephthalate, polyolefins such as polyethylene and polypropylene, and nylon are known. However, films formed from these resins have problems in that high combustion heat is generated by incineration and deterioration of incinerators is accelerated by such combustion heat. [0003] On the other hand, since polylactic acid and poly-3-hydroxybutyrate are plant-derived resins and biodegrade in natural environments, films using these resins as raw materials are expected to facilitate waste disposal. [0004] Therefore, attempts have been made to use conventional polyolefins and the like in combination with polylactic acid. In Japanese Patent Laid-Open No. 2005-232228, a resin composition formed of 1 to 99% by weight of poly-3-hydroxybutyrate-...
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