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Modified polypropylene soft bottle material, as well as preparation method and applications thereof

A polypropylene and soft bottle technology, applied in the field of polypropylene soft bottle materials and its preparation, can solve the problems of harsh production process conditions, low impact strength, secondary pollution, etc., and achieve excellent drop resistance and collision performance, High impact strength, saving processing cost

Active Publication Date: 2014-10-08
RENOLIT PLASTICS TECH BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the polymer materials used in the domestic production of non-PVC soft bags are imported membrane materials, such as the M312C membrane material of Sealed Air Company of the United States and the APP114 membrane material produced by Polycine Company of Germany. The price is very expensive and the production cost is high.
The quality of domestically produced materials is not yet fully qualified, mainly due to harsh production process conditions, high leakage rate of finished products, low impact strength, poor toughness, easy to break, and poor weldability
[0004] The packaging of traditional plastic bottles needs to go through embryo making, blow molding, placement of lifting rings and other processes, which is very cumbersome. If the packaging of infusion bottles is not handled properly in every production link, it will cause pollution to drugs
In addition, when plastic bottles are used, they need to be exhausted, which is easy to cause secondary pollution

Method used

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  • Modified polypropylene soft bottle material, as well as preparation method and applications thereof
  • Modified polypropylene soft bottle material, as well as preparation method and applications thereof
  • Modified polypropylene soft bottle material, as well as preparation method and applications thereof

Examples

Experimental program
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Embodiment 1

[0031] This embodiment provides a kind of preparation method of modified polypropylene soft bottle material, and this method comprises the following steps, and its flow process is as follows figure 1 Shown:

[0032] (1) 50% by weight of ethylene-propylene-based propylene-based thermoplastic elastomer (in this ethylene-propylene-based propylene-based thermoplastic elastomer, the weight percentage of ethylene is 5%, the weight percentage of propylene is 95%, and the density is 0.878 g / cm 3; Under the test conditions of 230°C and 2.16kg, the melt flow rate is 10g / 10min; the glass transition temperature is -25°C) and 50% by weight of random copolymerized polypropylene (the random copolymerized polypropylene is Copolymerization product of 7wt% ethylene and 93wt% propylene; under the test conditions of 230°C and 2.16kg, its melt flow rate is 3.0g / 10min; melting point is 140°C; notched impact strength is 10KJ / m 2 ) and 0.08% phenolic antioxidant (2,6-tert-butyl-4-methylphenol) and ...

Embodiment 2

[0038] The present embodiment provides a kind of preparation method of modified polypropylene soft bottle material, and this method comprises the following steps:

[0039] (1) The weight percentage is 65% styrene-based thermoplastic elastomer (the styrene-based thermoplastic elastomer is a styrene-ethylene / butylene-styrene block copolymer, and the weight percentage of styrene≤40%; At 25°C, its viscosity in 20% toluene solution is 500-2000MPa·s) and 35% by weight of random copolymerized polypropylene (the random copolymerized polypropylene is 7wt% of ethylene and 93wt% of propylene) Copolymerization product; under the test conditions of 230°C and 2.16kg, its melt flow rate is 3.0g / 10min; melting point is 140°C; notched impact strength is 10KJ / m 2 ) and 0.08% phenolic antioxidant (bis(3,5-tert-butyl-4-hydroxyphenyl) sulfide) and 0.05% phosphite antioxidant (bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite) is physically mixed in a high-speed mixer, and then pelletized ...

Embodiment 3

[0046] The present embodiment provides a kind of preparation method of modified polypropylene soft bottle material, and this method comprises the following steps:

[0047] (1) 80% styrene-based thermoplastic elastomer (the styrene-based thermoplastic elastomer is a styrene-ethylene / butylene-styrene block copolymer with a weight percentage of styrene≤40%; At 25°C, its viscosity in 20% toluene solution is 500-2000MPa·s) and 20% by weight of random copolymerized polypropylene (the random copolymerized polypropylene is 5wt% of ethylene and 95wt% of propylene) Copolymerization product; under the test conditions of 230°C and 2.16kg, its melt flow rate is 8.0g / 10min; melting point is 148°C; notched impact strength is 7KJ / m 2 ) and 0.08% phenolic antioxidant (tetrakis (β-(3,5-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester) and 0.05% phosphorous acid The ester antioxidant (tris(2,4-di-tert-butylphenyl) phosphite) is physically mixed in a high-speed mixer, and then pelle...

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Abstract

The invention relates to a modified polypropylene soft bottle material, as well as a preparation method and applications thereof. The preparation method of the modified polypropylene soft bottle material comprises the following steps: (1) mixing ethylene-propylene type propenyl thermoplastic elastomer or styrenic thermoplastic elastomer with polypropylene random copolymer, phenols antioxidant and phosphite ester antioxidant, then pelletizing underwater through an extruder, to obtain granular elastomer master batch; and (2) conducting dry blending to the polypropylene random copolymer and the elastomer master batch to obtain the modified polypropylene soft bottle material, wherein the amount of the polypropylene random copolymer adopted in the step (2) is greater than that of the polypropylene random copolymer adopted in the step (1). The obtained modified polypropylene soft bottle material has excellent physical performance and safety performance in contact with liquor, and can meet the blowing-filling-sealing technological requirements in preparation of soft bottles (bags), and the obtained polypropylene soft bottle (bag) is soft, good in self-sealing effect, has high qualification rate of 99% in the emptying test, high safety and high anti-impact strength.

Description

technical field [0001] The invention relates to a material for polypropylene soft bottles and its preparation method and application, in particular to a modified material used in blow-fill-seal (BFS) technology to prepare polypropylene soft bottles and the related preparation method and application. Background technique [0002] At present, in the field of infusion packaging in my country, there are three kinds of packaging products, namely glass bottles, plastic bottles and non-PVC film soft bags (or PVC soft bags). Air is introduced into the bottle to generate a pressure difference. At this time, the infusion is in a fully open state, and tiny particles and microorganisms in the air can enter the glass or plastic bottle and contaminate the infusion, causing potential harm to clinical application. Although the clinically used PVC soft bags overcome the above defects, there are also weaknesses: PVC soft bags have poor insulation to water, moisture and air, and are not easy to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L53/02C08K5/13C08K5/526C08K5/375C08K5/134C08J3/22
CPCC08J3/226C08J2323/14C08J2423/16C08J2453/00C08L23/14C08L2203/10C08L2205/025C08L2205/03C08L23/16C08K5/13C08K5/526C08L53/00C08K5/375C08K5/1345
Inventor 张文芳马懿王璧鲍文锦张丽铮
Owner RENOLIT PLASTICS TECH BEIJING CO LTD
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