Spinning plate used in non-woven fabric production

A technology of non-woven fabrics and spinnerets, applied in textiles and papermaking, spinneret assemblies, melt spinning, etc., can solve problems such as rough surface of spinneret fibers and lower spinneret efficiency
CN1392297AInactive Publication Date: 2003-01-22SUETOMI ENG
1 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUETOMI ENG
Publication Date
2003-01-22
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

This present invention provides a spinning die for a melt-blow type nonwoven fabric, capable of spinning out a smooth fiber having a minute diameter, and capable of reducing an energy cost. This spinning die has a pair of hot air-jetting slits arranged at the vicinity of the tip of a nozzle for extruding a molten polymer, a pair of cold air-jetting slits arranged at the downstream thereof, and ventilation slits formed at the spinning opening. The pair of the slits are regulated so that a large amount of the cold air may be blown to draw the molten polymer extruded from the nozzle by the negative pressure. The ventilation slits reduce the whirlpool caused by the rapid jetting of the cold air to enable the fiber with the smooth surface to be spun.
Need to check novelty before this filing date? Find Prior Art

Description

field of invention

[0001] The invention relates to spinnerets for the production of nonwovens by the so-called meltblowing process. Background technique

[0002] Such as Figure 5 As shown, in the melt blowing method, raw material sheets are put into a hopper 1, heated and melted in an extruder 2, and supplied to a die 3 for spinning. The short spun fibers are deposited onto a sheet on a conveyor belt 4 comprising a collection mesh. After the sheet passes through the calender rolls 5 while stripping the spun fibers from the conveyor belt 4, the spun fibers are crimped up by a crimping device 6 to produce a nonwoven fabric.

[0003] The mold 3 ejects the molten resin discharged through the spinneret hole 3a by hot air supplied through the hot air discharge hole 3b. Because a precise balance is required between the amount of molten polymer discharged through the spinneret hole 3a and the amount of hot air, it is very difficult to eject fibers with a desired diameter, especia...

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
Login to View More