Production method and production equipment of special material for polypropylene melt-blown non-woven fabric

A polypropylene melt-blown and production equipment technology, applied in the field of non-woven fabric production, can solve the problems of too wide molecular weight distribution, insufficient reaction time, and difficulty in forming, and achieve the effects of stable product melt finger, complete reaction, and suitable molecular weight distribution.

Active Publication Date: 2015-05-06
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

Method used

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  • Production method and production equipment of special material for polypropylene melt-blown non-woven fabric
  • Production method and production equipment of special material for polypropylene melt-blown non-woven fabric
  • Production method and production equipment of special material for polypropylene melt-blown non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: the production of PF1500 melt-blown special material.

[0048] 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

[0060] Embodiment 2: the production of PF1200 melt-blown special material.

[0061] 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

[0072] Embodiment 3: the production of PF1800 melt-blown special material.

[0073]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 ra...

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Abstract

The invention discloses a production method and production equipment of a special material for a polypropylene melt-blown non-woven fabric. The production method comprises the following steps: adding 50-200g of a long-acting stabilizing agent, 25-200g of a short-acting stabilizing agent, 25-160g of a high-temperature-resistant stabilizing agent and 20-100g of a lubricating agent to each 100kg of polypropylene; and mixing by using a mixing machine, and discharging to an extruder, and generating a reaction in a lead-screw reaction section of a double-screw extruder. The production equipment comprises a mixing machine, wherein uniformly mixed raw materials are discharged into an intermediate bunker from a mixed material outlet, an outlet in the bottom of the intermediate bunker is connected with an inlet of the extruder, the extruder is of a dual-screw structure and is used for sending processed materials to a cooling water tank for being cooled by virtue of an inclined water tank, then air-dried by an air dryer, granulated in a granulating machine, screened by a vibrating screen, and sent into a homogenizing and mixing tank by virtue of a rotary discharging device. The production method and the production equipment have the beneficial effects of uniformly mixing the raw materials and solving the difficulty of forming of polypropylene with a high flowing melting index, and are 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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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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