Production method of polyester filament spunbonded needle-punched felt base

A production method and filament spinning technology, applied in the directions of melt spinning, stretch spinning, filament/thread forming, etc., can solve the problem of long process, poor elongation, low strength, etc. problems, to achieve the effects of thermal shrinkage and stability of various indicators, high molecular chain orientation, and stable molecular structure

Active Publication Date: 2013-07-17
DALIAN HUAYANG NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for faster fibers being produced while maintaining their stability during subsequent processing steps like drawing or twisting them into yarn bundles. It eliminates any extra step needed before final product formation but still results in highly orientated, small diameter polymeric strands. These struts can be further processed through heat treatment processes such as quenching and reheating to improve properties. Overall, this new method simplifies manufacturing processes, saves money, improves quality control over existing methods, resulting in improved performance compared to traditional materials used today.

Problems solved by technology

Technologies described in the technical problem addressed in this patents involve improving the durability and quality of lining materials like rubber ones due to their superior mechanical property compared to traditional methods like thermoplastic resin coatings. However, current solutions have limitations including slow productivity rates, limited application range, difficulty in producing higher grade products without sacrificially compromising certain qualities, and potential negative impact upon environmental concerns associated with these types of chemistry.

Method used

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  • Production method of polyester filament spunbonded needle-punched felt base
  • Production method of polyester filament spunbonded needle-punched felt base

Examples

Experimental program
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Effect test

Embodiment 1

[0058] Put polyester (PET) slices in a pre-crystallizer for pre-crystallization, pre-crystallization temperature: 165°C, pre-crystallization time: 20 minutes. The pre-crystallized raw material was dried, the drying temperature was 155° C., the drying time was 5 hours, and the water content of the raw material after drying was 25 ppm. A screw extruder was used for melt extrusion, and the heating temperatures of each heating zone of the screw extruder were 265°C, 276°C, 281°C, 284°C, 285°C, 285°C, and 285°C. The melt extruded by the screw extruder is filtered through a filter, and the pressure after the filter is 7.0Mpa; the filtered melt enters the spinning machine, and is sprayed into filaments from the spinneret after metering, and the fineness of the single filament is 3dpf. The initial pressure of the filament assembly: 11 Mpa, the maximum operating pressure: 25Mpa, the temperature of the heat medium in the spinning system: 288°C. The primary fiber is cooled by side blowin...

Embodiment 2

[0060] Put polyester (PET) slices in a pre-crystallizer for pre-crystallization, pre-crystallization temperature: 170°C, pre-crystallization time: 25 minutes. The pre-crystallized raw material is dried, the drying temperature is 160° C., the drying time is 5 hours, and the water content of the raw material after drying is 30 ppm. A screw extruder was used for melt extrusion, and the heating temperatures of each heating zone of the screw extruder were 265°C, 276°C, 282°C, 286°C, 288°C, 288°C, and 288°C. The melt extruded by the screw extruder is filtered through a filter, and the pressure after the filter is 8.0Mpa; the filtered melt enters the spinning machine, and after metering, it is sprayed into filaments from the spinneret, and the fineness of the single filament is 4dpf. The initial pressure of the filament assembly: 13 Mpa, the maximum working pressure: 25Mpa, the temperature of the heating medium in the spinning system: 288°C. The primary fiber is cooled by side blowi...

Embodiment 3

[0062] Put polyester (PET) slices in a pre-crystallizer for pre-crystallization, pre-crystallization temperature: 175°C, pre-crystallization time: 35 minutes. The pre-crystallized raw material is dried, the drying temperature is 165° C., the drying time is 5.5 hours, and the water content of the raw material after drying is 30 ppm. A screw extruder was used for melt extrusion, and the heating temperatures of each heating zone of the screw extruder were 275°C, 282°C, 286°C, 286°C, 292°C, 293°C, and 293°C. The melt extruded by the screw extruder is filtered through the filter, and the pressure after the filter is 9.0Mpa; the filtered melt enters the spinning machine, and is sprayed into filaments from the spinneret after metering. The initial pressure of the filament assembly: 11 Mpa, the maximum working pressure: 25Mpa, the temperature of the heat medium in the spinning system: 292°C. The primary fiber is cooled by side blowing, the temperature of the side blowing air is 21°C,...

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Abstract

A production method of a polyester (PET) filament spunbonded needle-punched felt base. The process is as below: pre-crystallizing and drying a polyester (PET) chip, and sending the chip into an extruder for extrusion; passing through a filter, sending into a spinning machine, measuring, and spinning the polyester chip into filaments by a spinneret plate; cooling by cross air blasting; drafting the filaments by tube type air flow, splitting the filaments and swaying the filaments; forming a uniform fiber net on a netting machine; sending the fiber net to a needle machine for needling binding, slitting and winding; and then conducting unreeling, fixing, glue dipping, curing and drying, and edge cutting and winding to produce a felt base; or after needling binding, directly conducting fixing, glue dipping, curing and drying, and edge cutting and winding to produce the felt base. The invention has advantages of simple process, low production cost, high production efficiency, high product tenacity, good uniformity, good thermal shrinkage and stable indicators.

Description

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Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Owner DALIAN HUAYANG NEW MATERIALS TECH CO LTD
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