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A kind of binding film and its application

A fluidized bed reactor and copolymer technology, applied in synthetic resin layered products, transportation and packaging, packaging and other directions, can solve the problems of insufficient tear strength and puncture resistance, and high cost

Active Publication Date: 2018-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a strapping film, which has the advantages of high tear strength, high puncture strength and high transparency, and solves the problem of the tear strength of the strapping film in the prior art. And the problem of insufficient puncture strength and high cost

Method used

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  • A kind of binding film and its application
  • A kind of binding film and its application
  • A kind of binding film and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0072] (1) Preparation of copolymer

[0073] in such as figure 1 In the fluidized bed reactor 2 shown in which there is nitrogen fluidization, at first through the pipeline 11, a small amount of TiCl loaded with magnesium chloride is continuously input in an amount of 0.1 kg / h. 3 Catalyst and triethylaluminum as cocatalyst, and input ethylene through pipeline 14, pipeline 15 input 1-hexene raw material gas and pipeline 16 input a small amount of isopentane condensing agent, start initial stage in the fluidized bed reactor Olefin polymerization reaction, the reaction produces a small amount of polyethylene. Then gradually increase the consumption of catalyst and cocatalyst to 5kg / h, and gradually increase the consumption of isopentane, and keep the fluidization gas velocity constant. Along with the progress of reaction, continue to input ethylene through pipeline 14, pipeline 15 continues to input 1-hexene raw material gas, thereby constitute circulating medium in the fluidiz...

Embodiment 2

[0083] (1) Preparation of copolymer

[0084] in such as figure 1In the fluidized bed reactor 2 shown in which there is nitrogen fluidization, at first through the pipeline 11, a small amount of TiCl loaded with magnesium chloride is continuously input in an amount of 0.1 kg / h. 3 Catalyst and triethylaluminum as cocatalyst, and input ethylene through pipeline 14, pipeline 15 input 1-butene raw material gas and pipeline 16 input a small amount of isopentane condensing agent, start initial stage in the fluidized bed reactor Olefin polymerization reaction, the reaction produces a small amount of polyethylene. Then gradually increase the consumption of catalyst and cocatalyst to 5kg / h, and gradually increase the consumption of isopentane, and keep the fluidization gas velocity constant. Along with the progress of reaction, continue to input ethylene through pipeline 14, pipeline 15 continues to input 1-butene raw material gas, thereby constitute circulation medium in fluidized be...

Embodiment 3

[0095] (1) Preparation of strapping film

[0096] The binding film of this embodiment comprises three layers in sequence: an outer layer 1, a core layer and an outer layer 2. The outer layer 1 and the outer layer 2 are respectively connected to the two sides of the core layer, and the outer layers 1 and 2 are directly in contact with the external environment. the outermost layer.

[0097] The raw materials used for the outer layer 1 and the outer layer 2 and the proportioning ratio are: 50wt% of Japan's Mitsui Chemicals company's trademark is SP1520 linear low density polyethylene (LLDPE), 30wt% of South Korea's LG Chemicals company's trademark is H5200 copolymerized polypropylene (MFR =2g / 10min), 16wt% of metallocene polyethylene (MPE) Exceed 1327KD from ExxonMobil Chemical Co., 4wt% anti-adhesive masterbatch.

[0098] The used raw material of core layer and proportioning are: the Exxon Mobil chemical company trade mark of 79wt% is the linear low density polyethylene (LLDPE)...

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Abstract

The invention discloses a bundling film and an application thereof. The bundling film includes a core layer and an external layer. The core layer includes a copolymer of ethylene and [alpha]-olefin, which accounts for 2-49 wt% of the core layer. The copolymer is 20000-250000 in weight-average molecular weight and is 2-15 in molecular weight distribution index. The bundling film has high tear strength, high anti-punching strength and high transparency, solves the problems of poor tear strength and anti-punching strength in the prior art, and can be used widely in package materials.

Description

technical field [0001] The present invention relates to a film product, in particular, the present invention relates to a binding film and its application. Background technique [0002] Strapping film, also known as stretch wrapping film. It is the earliest in China to produce PVC stretch wrap film with PVC as base material and DOA as plasticizer and self-adhesive function. Due to environmental protection issues, high cost (compared with PE, the proportion is large, and the unit packaging area is small), and poor stretchability, it was gradually eliminated when the domestic production of PE stretch wrap film was started in 1994-1995. [0003] Bundling film is a kind of packaging method that uses mechanical stretching device or the deformation stress generated by forcibly stretching the film at room temperature to wrap the goods tightly for transportation and storage. It is a very popular packaging form in the world at present, and it is mostly produced by imported resin an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/08B32B27/30B32B27/32B65D65/40
Inventor 吴文清高文清崔宇辉孙洪霞阳永荣王晓丽王靖岱韩国栋胡晓波王静陈毓明魏文学蒋斌波刘焕毅黄正梁王景江廖祖维薛少利郭俊芝
Owner CHINA PETROLEUM & CHEM CORP
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