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Polyolefin resin composition and film contg said composition

A technology of polyolefin resin and composition, applied in the field of polyolefin resin composition and film containing the resin composition, can solve the problems of unsatisfactory see-through property and film scintillation, obvious film scintillation of film see-through property and the like

Inactive Publication Date: 2002-05-01
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, a film containing the composition disclosed in JP-A 7-258478 has problems in that see-through and film flicker are conspicuous because the composition has a large amount of antiblocking agent not less than 1.0% by weight, and the large amount of antiblocking agent Have a particle size of not less than 22 μm in the volume particle size distribution
[0008] In addition, the film containing the disclosure of JP-A 8-92428 has similar unsatisfactory problems of see-through and film flickering because the composition has a large amount of antiblocking agent not less than 1.0% by weight, and the large amount of antiblocking agent The adhesive has a particle size of not less than 22 μm in the volume particle size distribution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0058] The multilayer film can be produced, for example, according to a coextrusion tubular film method or a coextrusion casting method by extruding the polyolefin resin composition of the present invention and polymers constituting various layers.

[0059] The films of the invention can be used to prepare laminated film articles comprising the films of the invention and substrates comprising, for example, plastic, aluminum foil, cardboard and paper. A laminate molded article can be produced, for example, by combining (i) an extrusion molding or a coextrusion molding of the polyolefin resin composition of the present invention and (ii) a substrate such as (a) a film comprising, for example, polypropylene films, polyester films and polyamide films, oriented or not; (b) aluminum foil; (c) cellophane; and (d) paper, by dry lamination or interlayer. A laminated film can be produced by extruding the polyolefin resin composition of the present invention on a substrate, for example, ...

Embodiment 1 and comparative example 1-4

[0146] The antiblocking agent and the polyolefin resin were melt-kneaded with a Banbury mixer to obtain a masterbatch having an antiblocking agent concentration of 10% by weight, provided that the weight of the masterbatch was set to 100% by weight.

[0147] The organic amide and the polyolefin resin were melt-kneaded with a Banbury mixer to obtain a masterbatch having an organic amide concentration of 2.0% by weight, provided that the weight of the masterbatch was set to 100% by weight.

[0148] The above-mentioned anti-blocking agent masterbatch, organic amide compound masterbatch and polyolefin resin were dry mixed with a drum mixer to obtain the ratio of each component shown in Table 2, thereby obtaining a mixture. With the tubular film molding machine that has the single-screw extruder of 50mm φ manufactured by Placo Co., Ltd., be 25 kg / hour at extrusion speed, be 200 ℃ of die temperature, BUR (blow-up ratio) be 1.8 The mixture was molded into a film under the condition o...

Embodiment 2 and comparative example 5-7

[0157] The above-mentioned antiblocking agent masterbatch, organic amide compound masterbatch and polyolefin resin were dry mixed with a drum mixer to obtain the ratio of each component shown in Table 4, thereby obtaining a mixture. With the tubular film molding machine that has the single-screw extruder of φ 50mm manufactured by Placo Co., Ltd., be 25 kg / hour at extrusion rate, die head temperature is 200 ℃, BUR (blow-up ratio) is 1.8 The mixture was molded into a film under the condition of , thereby obtaining a single-layer film with a thickness of 20 μm and another single-layer film with a thickness of 80 μm in each of the examples and comparative examples, provided that only poly Olefin resin.

[0158] The evaluation results of the respective films are listed in Table 5. For the measurement of haze, LSI and sparkle of the film, an 80 μm thick film was used, and for the measurement of blocking resistance, rubbing angle and scratch resistance, a 20 μm thick film was used. ...

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PUM

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Abstract

There is provided a polyolefin resin composition comprising: (i) a polyolefin resin, and (ii) an anti-blocking agent in an amount of from 500 to 15,000 ppm by weight based on the weight of the polyolefin resin, which anti-blocking agent is made of a natural mineral and has specific particle diameters.

Description

technical field [0001] The present invention relates to a polyolefin resin composition and a film containing the resin composition, which film is excellent in transparency, see-through property, blocking resistance, slipping property, scratch resistance, manufacture and visual appearance (flicker of the film) , and the film has a good balance in these properties. Background technique [0002] For materials used in the production of films for packaging purposes, (1) good film-forming properties, and (2) little contamination of film-forming machines are required. [0003] In addition, for the film, it is also required that (1) the packaged goods are clearly visible (that is, the transparency of the film is excellent), (2) its appearance is good, and (3) the film is easy to process when it is processed from the film into a bag (that is, the film has good transparency). excellent preparation performance), (4) when the items are packaged in bags (especially when automatically pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08K3/34C08K7/00
CPCC08J2323/02C08K2201/014C08K7/00C08J5/18C08K3/34C08L23/02
Inventor 三野直弘白石宽之
Owner SUMITOMO CHEM CO LTD