Production equipment of non-woven fabric compound economic master batch

Abstract

The invention relates to a production equipment of a non-woven fabric compound economic master batch. The formulation of the master batch comprises: 12-18 parts of polypropylene resin with melt index being 60-90, 6-10 parts of polypropylene resin with melt index being 3-30, 55-65 parts of nanometer active calcium carbonate, 8-10 parts of polyethylene wax, 0.5-0.7 part of compound antioxidant, 1.5-2.5 parts of zinc stearate, 1.5-2.5 parts of titanic acid ester, 1.5-2 parts of white oil and 1.5-2 parts of rutile titanium dioxide. The production method of the master batch comprises the steps of: feeding the materials after intensive mixing into a double-screw extruder and later into a single-screw extruder, conducting melt extrusion, grain cutting and screening to produce non-woven fabric finished product. The production equipment adopts a stair-type screw extruder comprising the first-stair double-screw extruder and the second-stair single screw extruder which are arranged in a 'T'-type. The invention adopts the nanometer active calcium carbonate which can partially substitute PP materials used for non-woven fabric. After being added to the PP materials used for the non-woven fabric, the invention can greatly reduce the cost of the materials and save large amount of energy under the premise that melt blowing and calendaring guarantee the no-breaking of fibers.

Description

Technical field: [0001] The invention relates to a production equipment of non-woven fabrics. In particular, it relates to a production equipment for non-woven composite economic masterbatch which is used as non-woven fabric and partially replaces PP. The invention belongs to the technical field of materials for nonwoven fabrics and special production equipment thereof. Background technique: [0002] The raw materials for making non-woven fabrics used to be PP (polypropylene). PP is a by-product of petroleum, which is expensive and consumes a lot of energy. [0003] At present, the processing technology of filling modification, functional masterbatch, and color masterbatch is generally: use a high-speed rotary mixer to fully mix the mediator and various additives with inorganic substances, dehydrate and activate to form a semi-dissolved mass, and then use crushing After the extruder is crushed, the granulation process is completed with a single-screw or twin-screw extruder...

AI Technical Summary

Problems solved by technology

In addition, some processes require the use of low-boiling substances that are immiscible with the mediator to dissolve and separate the additives required in the product from the blend. If the current usual process and equipment are used, the process will be complicated and costly. Time-consuming and labor-intensive, there are constraints on production, for which these processes require the use of new processes and equipment modifications

[0004] The currently used single-screw extruder usually compresses the material entering the feeding section according to a certain compression ratio according to the direction of screw rotation, and then mixes and disperses in the mixing section. The devolatilization effect is poor, and it needs to go through two or The dispersion and devolatilization requirements of the final performance can be completed only after three times of repeated processing

The twin-screw extruder used is an effective equipment that can complete the blending and homogenization and devolatilization process of various blending logistics systems, but the co-rotating twin-screw extrusion has a large shearing effect on the material. The period is under high temperature and high pressure, especially after the material has completed various properties, its fluid is still extruded at a very high temperature, which will have an adverse effect on certain properties of the product, and the high temperature extruded product has poor density. , easy to absorb water twice

At the same time, the self-cleaning property of the twin-screw extruder is poor, resulting in a long residence time of the material, poor dispersion and mixing, and extremely high requirements on the production process, which limits their respective applications in production.

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