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Polyethylene blends used themselves as a carrier for the microfiber manufacturing process

A blend and polyethylene technology, applied in fiber processing, textiles and papermaking, single-component polyamide rayon, etc., can solve the problems of fiber damage, production delay, fiber thickness fluctuation, poor stability, etc.

Active Publication Date: 2020-03-10
THE POLYOLEFIN COMPANY SINGAPORE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor stability means fiber thickness fluctuates during processing, leading to fiber breakage and production delays during extrusion

Method used

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  • Polyethylene blends used themselves as a carrier for the microfiber manufacturing process
  • Polyethylene blends used themselves as a carrier for the microfiber manufacturing process
  • Polyethylene blends used themselves as a carrier for the microfiber manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4 and comparative example 1

[0137] Preparation of Low Density Polyethylene (LDPE)

[0138] The blended LDPEs listed in Table 1 were prepared by dry blending pellets of each LDPE in the ratios provided in the table. The dry blended materials were then fed into the hopper of the extruder and melt mixed using a screw diameter of 2 mm (the size of the die opening) operating at a temperature of 180°C and providing extruded pellets of 2.0 kg / hr. 20mm Labtech Engineering machine (Model: LBE20-30 / C (L / D: 32)), the resulting blended polymer was then extruded to produce the polymer blends of Examples 1 to 4 in pellet form . A similar method was used for Comparative Example 1.

[0139] Formation of polyamide fibers

[0140] Each blended LDPE was dried in an oven at 90°C for at least 3 hours and the polyamide was dried in an oven at 120°C for at least 3 hours. The blended LDPE and polyamide were manually dry blended in a 1:1 weight ratio. The dry blended LDPE / polyamide mixture was then poured into a hopper ...

Embodiment 5 and comparative example 2

[0154] Formation of blended LDPE

[0155] The following examples utilize industrial scale equipment.

Embodiment 5

[0157] The physical properties of embodiment 5 are as follows: MFR: 54g / 10min; Density: 0.917g / cm 3 ; and MWD: 5.6.

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Abstract

We disclose herein a polymer blend comprising a first polyethylene; and a second polyethylene, wherein the blend has a melt flow rate of from 45 g / 10min to 60 g / 10min, a density of from 0.910 g / cm3 to 0.930 g / cm3 and a molecular weight distribution (Mw / Mn) of from 4 to 7. There is also disclosed a process to make said polymer blend and uses thereof.

Description

technical field [0001] The present invention relates to blended polyethylenes in which the constituent polyethylenes are produced by a tubular process for the manufacture of polyethylenes. In addition, the present invention relates to the use of said polyethylene blend as a carrier for polyamide microfiber manufacturing processes, when compared to unblended polyethylene produced by a tubular process, showing improved fiber stability and maximum Improvements in coiling speed. Background technique [0002] The listing or discussion of a previously published document in this specification should not necessarily be taken as an acknowledgment that the document is part of the state of the art or is common general knowledge. [0003] Despite the simple structure of ethylene, the field of polyethylene is a complex field with a wide variety of polyethylenes and many different manufacturing methods. The autoclave process and the tubular process are two particularly important methods...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/04D01F8/06
CPCD01D5/36D01F6/46D01F6/90D01F8/06D01F8/12
Inventor 陈玮婷
Owner THE POLYOLEFIN COMPANY SINGAPORE