High strength PE-PP skin-core composite filament with low melting point and preparation method thereof

A technology of PE-PP and composite monofilament, which is applied in rayon manufacturing, conjugated synthetic polymer rayon, filament/thread forming, etc., can solve the problem of affecting stress concentration point network nodes, insufficient fracture strength coefficient, Affect crystallinity and other issues

Inactive Publication Date: 2018-05-04
GUANGDONG MODERN HIGH TECH FIBER CO LTD
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyethylene and polypropylene monofilaments have been widely used in fishing nets due to their light specific gravity and non-absorbent properties. Especially in ocean fishing, they can reduce dragging horsepower, but due to their insufficient breaking strength coefficient after forming nets, they affect The use of large nets for pelagic fishing
After the monofilament is formed into a net, it needs a certain temperature to set the shape to make the node firm, usually higher than the glass transition temperature of the material, but this temperature will affect the change of the molecular structure of the polymer, thereby affecting the crystallinity, and then affecting the stress concentration point Node

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High strength PE-PP skin-core composite filament with low melting point and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1. Preparation of antioxidant masterbatch: melting, shearing, kneading, feeding, drawing (cooling), cutting of polypropylene powder and antioxidant UV531 with a weight ratio of 70:30 through a twin-screw extruder Granules to prepare antioxidant masterbatches.

Embodiment 2

[0025] Example 2. Benbai 330D PE-PP sheath-core composite monofilament with low melting point and high strength, the spinning speed is 100m / min.

[0026] (1) Pour 99.0wt% HDPE polyethylene and 1.0wt% antioxidant UV531 masterbatch into the blender, mix evenly and release it, then pour it into the screw extruder for melting, shearing and plasticizing the cortex material Booster metering pump. Set the speed and metering mass ratio of the metering pump to 15%, the melt enters the cortex cavity in the composite component through the pipeline, and the pressure in the cortex cavity is controlled at 5-9MPa to ensure the pressure in the cortex cavity is stable. The cortex melt enters the cortex cavity in the composite assembly in the composite spinning box for composite spinning.

[0027] The temperature setting of each zone of the cortical screw extruder:

[0028] Zone 1 130~210℃;

[0029] Zone 2 160~220℃;

[0030] Zone 3 160~220℃;

[0031] Zone 4 160~220℃;

[0032] Zone 5 160~2...

Embodiment 3

[0049] Example 3, black 330D low-melting point high-strength PE-PP sheath-core composite monofilament, spinning speed 100m / min.

[0050] (1) Pour 94.7wt% HDPE polyethylene, 4.5wt% black masterbatch and 0.8wt% antioxidant UV531 masterbatch into the mixer, mix evenly and release it, then pour it into the cortex material screw extruder to melt, Shearing and plasticizing are evenly sent to the booster metering pump. Set the speed metering mass ratio of the metering pump to 18%, the melt enters the cortex cavity in the composite component through the pipeline, and the pressure of the cortex cavity is controlled at 5-9MPa to ensure the pressure in the cortex cavity is stable. The cortex melt enters the cortex cavity in the composite assembly in the composite spinning box for composite spinning.

[0051] The temperature setting of each zone of the cortical screw extruder:

[0052] Zone 1 140~220℃;

[0053] Zone 2 160~220℃;

[0054] Zone 3 160~220℃;

[0055] Zone 4 160~220℃;

[...

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

PUM

PropertyMeasurementUnit
Strengthaaaaaaaaaa
Strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a high strength PE-PP skin-core composite filament with a low melting point and a manufacturing method thereof. The composite filament is composed of a skin layer and a core layer. The skin layer material accounts for 10 to 30 wt% of the composite filament, and the core layer material accounts for 70 to 90 wt% of the composite filament. The skin layer material is composedof HDPE polyethylene, color master batches, and antioxidant master batches. The core layer material is composed of homo-polymerized PP, color master batches, and antioxidant master batches. The core layer PP is homo-polymerized polypropylene. The skin layer PE is high density polyethylene with a low melting point. Through composite spinning and high stretching, PP of the core layer can maintain ahigh strength skeleton. During net forming and moulding, PE of network nodes can be melted at a low temperature (the melting point of PE is about 130 DEG C) and solidified to form firm network nodes;PP of the core layer can maintain an original strength and high temperature resistant property, and the provided skin-core composite filament is mainly used to prepare long range fishing energy savingfishing tools namely fishing nets.

Description

technical field [0001] The invention relates to a low-melting-point high-strength PE-PP skin-core composite monofilament and a manufacturing method thereof. Applied to ocean fishing energy-saving fishing gear. Background technique [0002] The traditional fishing net silk is mainly nylon monofilament. High strength, wear resistance and aging resistance. However, due to its large specificity, water absorption, and large drag resistance in water, the energy consumption during fishing operations is relatively large. Polyethylene and polypropylene monofilaments have been widely used in fishing nets due to their light specific gravity and non-absorbent properties. Especially in ocean fishing, they can reduce dragging horsepower, but due to their insufficient breaking strength coefficient after forming nets, they affect The use of large nets for pelagic fishing has been eliminated. After the monofilament is formed into a net, it needs a certain temperature to set the shape to ...

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): D01F8/06D01F1/10D01D5/34
CPCD01D5/34D01F1/106D01F8/06
Inventor 郭清海江建平郭人琦
Owner GUANGDONG MODERN HIGH TECH FIBER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap