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A kind of production method and production equipment of polypropylene melt-blown non-woven special material

A technology of polypropylene melt-blowing and production equipment, which is applied in the field of non-woven fabric production, can solve problems such as too wide molecular weight distribution, insufficient reaction time, and difficult molding, and achieve the effects of stable melt index, complete reaction, and appropriate molecular weight distribution

Active Publication Date: 2017-08-01
HUNAN SHENGJIN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-grade polypropylene melt-blown non-woven special material production method, which solves the problem of insufficient mixing of raw and auxiliary materials and degradation agents during the reaction in the production process of the existing technology, and insufficient reaction time, resulting in product melt index Unstable, the molecular weight distribution is too wide, not suitable for the melt blown spinning process; and the design of the die head and water tank is not suitable, and the molding is difficult

Method used

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  • A kind of production method and production equipment of polypropylene melt-blown non-woven special material
  • A kind of production method and production equipment of polypropylene melt-blown non-woven special material
  • A kind of production method and production equipment of polypropylene melt-blown non-woven special material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1: the production of PF1500 melt-blown special material.

[0053] A certain weight of polypropylene powder with a melting point of 30g / 10min, its properties are shown in Table 1, and it is prepared according to the ratio of Table 2 with stabilizers and lubricants, mixed evenly in the mixer and put into the intermediate silo to become Polypropylene blends to be processed. The intermediate silo is connected with the feeding hopper of the twin-screw extruder. The twin-screw extruder runs according to the operating parameters of Table 4, and the degradation agent is added in the middle of the second to the third section of the twin-screw extruder through the degradation agent pump, and the addition is controlled by the ratio of the degradation agent and the polypropylene mixture in Table 3, That is, the feed load in Table 4 determines the feed amount of the mixture, and the addition amount of the degradation agent is adjusted according to the ratio requirements ...

Embodiment 2

[0064] Embodiment 2: the production of PF1200 melt-blown special material.

[0065] The properties of polypropylene pellets with a certain weight and melting index of 3g / 10min are shown in Table 6, and the stabilizer and lubricant are prepared according to the ratio of Table 7. After being mixed evenly in the mixer, they are put into the intermediate silo to become processed polypropylene mixture. The intermediate silo is connected with the feeding hopper of the twin-screw extruder. The twin-screw extruder runs according to the operating parameters in Table 9, and the degradation agent is added in the middle of the second to the third section of the twin-screw extruder through the degradation agent pump, and the addition is controlled by the ratio of the degradation agent and the polypropylene mixture in Table 8, That is, the feed load in Table 9 determines the feed amount of the mixture, and the addition amount of the degradation agent is adjusted according to the ratio requ...

Embodiment 3

[0076] Embodiment 3: the production of PF1800 melt-blown special material.

[0077] The properties of polypropylene with a certain weight melting index of 35g / 10min are shown in Table 11. The powder, stabilizer and lubricant are prepared according to the ratio in Table 12. After being mixed evenly in the mixer, they are put into the intermediate silo to become processed. polypropylene mixture. The intermediate silo is connected with the feeding hopper of the twin-screw extruder. The twin-screw extruder runs according to the operating parameters in Table 14, and the degradation agent is added in the middle of the second to the third section of the twin-screw extruder through the degradation agent pump, and the addition is controlled according to the ratio of the degradation agent and the polypropylene mixture in Table 13, That is, the feed load in Table 14 determines the feed amount of the mixture, and the addition amount of the degradation agent is adjusted according to the r...

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Abstract

The invention discloses a production method and production equipment for special materials for high-grade polypropylene melt-blown non-woven fabrics. For every 100 kilograms of polypropylene, 50-200 grams of long-acting stabilizers and 25-200 grams of short-acting stabilizers are added to achieve high temperature resistance and stability. 25-160 grams of lubricant, 20-100 grams of lubricant; the mixer stirs, feeds to the extruder, and reacts in the screw reaction section of the twin-screw extruder; the production equipment, including the mixer, mixes uniform raw materials from mixing The material outlet goes down to the middle silo, and the bottom outlet of the middle silo is connected to the inlet of the extruder. The extruder has a twin-screw structure. The extruder sends the processed material to the cooling water tank through the inclined water tank for cooling, and then in the air dryer Air-dried, granulated in a granulator, screened by a vibrating sieve, and sent to a homogenizing blending tank through a rotary feeder. The invention has the beneficial effects of mixing evenly, solving the molding problem of high-fluidity melt index polypropylene, and being suitable for conventional production.

Description

technical field [0001] The invention belongs to the technical field of non-woven fabric production, and relates to a production method and production equipment for special materials for polypropylene melt-blown non-woven fabrics. Background technique [0002] Meltblown nonwoven fabric is a kind of nonwoven fabric. Due to the uniqueness of the melt-blown process, the fibers produced are almost superfine fibers, so the melt-blown non-woven fabric has excellent barrier filtration, air permeability, and oil absorption, and is widely used in medical protection, sanitary materials, and filter materials. , thermal insulation materials, oil-absorbing materials, battery separators and other fields. At present, there are mainly Korean large forest materials on the market. The melting index can reach 900g / 10min and 1500g / 10min, and the Borealis 1200 / 10min. Melting refers to 1500g / 10min). [0003] Due to the immature technology in China, there are very few manufacturers of meltblown ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B7/00B29B9/06B29C47/00B29C47/38B29C47/12B29C47/88B29C47/68C08L23/12B29C48/04B29C48/30B29C48/395
CPCB29C48/04B29C48/919
Inventor 罗志宏周慧初陈邵安
Owner HUNAN SHENGJIN NEW MATERIAL
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