Supercharge Your Innovation With Domain-Expert AI Agents!

Degradable tow with O-shaped sheath-core structure for cigarette filter tip and preparation method of degradable tow

A skin-core structure and filter technology, which is applied in the field of degradable tow preparation, can solve the problems of environmental pollution, thermal stability and poor adhesion, and achieve the effects of simple preparation process, easy operation and improved environmental protection

Pending Publication Date: 2021-01-22
SHENZHEN HUAYUAN NEW MATERIAL CO LTD
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the poor thermal stability and cohesiveness of existing cigarette filter materials, chemical reagents are usually used for chemical bonding, and the use of chemical reagents also has certain environmental pollution problems.

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
  • Degradable tow with O-shaped sheath-core structure for cigarette filter tip and preparation method of degradable tow
  • Degradable tow with O-shaped sheath-core structure for cigarette filter tip and preparation method of degradable tow
  • Degradable tow with O-shaped sheath-core structure for cigarette filter tip and preparation method of degradable tow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for preparing a degradable tow with an O-shaped skin-core structure for a cigarette filter, comprising the following steps:

[0038] Put PBAT resin as the core layer resin in an oven at 90°C for 12 hours, and PBS resin as the skin layer resin in an oven at 80°C for 12 hours. The weight ratio of the skin layer to the core layer is 1:1. Then add materials into different twin-screw extruders respectively. The core layer twin-screw temperature is set at 120°C-140°C-160°C-140°C-130°C, and the filtration temperature is 165°C. Cortex twin-screw 120°C-130°C-150°C-140°C-130°C, filtration temperature 155°C. The diameter of the spinneret is 200 mm, the spinneret holes are O-shaped, and the number of holes is 1200. Then through drawing, crimping, drying to get such as figure 1 tow shown. The obtained tow is thermally bonded at 120° C. for 3 seconds and then shaped by a filter rod forming machine through a forming process to obtain a cigarette filter rod.

Embodiment 2

[0040] A method for preparing a degradable tow with an O-shaped skin-core structure for a cigarette filter, comprising the following steps:

[0041] Put PBS resin as the core layer resin in an oven at 85°C for 12 hours, and PBSA resin as the skin layer resin in an oven at 80°C for 12 hours. The weight ratio of the skin layer to the core layer is 1:0.5. Then add materials into different twin-screw extruders respectively. The core layer twin-screw temperature is set at 120°C-130°C-150°C-140°C-130°C, and the filtration temperature is 160°C. Cortex twin-screw 120°C-130°C-150°C-140°C-130°C, filtration temperature 160°C. The diameter of the spinneret is 200 mm, the spinneret holes are O-shaped, and the number of holes is 1500. Then through drawing, crimping, drying to get such as figure 1 tow shown. The obtained tow is thermally bonded at 110° C. for 5 seconds and then shaped by a filter rod forming machine through a forming process to obtain a cigarette filter rod.

Embodiment 3

[0043] A method for preparing a degradable tow with an O-shaped skin-core structure for a cigarette filter, comprising the following steps:

[0044] Put PBAT resin as core layer resin into 80 ℃ oven and dry for 12h, PBS and PBSA resin (wherein the mass fraction of PBS and PBSA are 50%) put into 80 ℃ oven for 12h as cortex resin, wherein the weight of cortex and core layer The ratio is 1:0.7. Then add materials into different twin-screw extruders respectively. The core layer twin-screw temperature is set at 120°C-140°C-160°C-140°C-130°C, and the filtration temperature is 165°C. Cortex twin-screw 120°C-130°C-150°C-140°C-130°C, filtration temperature 150°C. The diameter of the spinneret is 200 mm, the spinneret holes are O-shaped, and the number of holes is 1000. Then through drawing, crimping, drying to get such as figure 1 tow shown. The obtained tow is thermally bonded at 120° C. for 5 seconds and then shaped by a filter rod forming machine through a forming process to ob...

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

No PUM Login to View More

Abstract

The invention provides a degradable tow with an O-shaped sheath-core structure for a cigarette filter tip. A single fiber in the degradable tow has the O-shaped sheath-core structure, the O-shaped sheath-core structure comprises a sheath layer and a core layer, and the cross section of the single fiber is O-shaped; and the resin material of the degradable tow is PBAT, PBS, and PBSA. According to the degradable tow with the O-shaped sheath-core structure for the cigarette filter tip, the degradable resin PBAT, PBS and PBSA are adopted, and the prepared cigarette filter tip tow is degradable andenvironmentally friendly; and meanwhile, the skin-core structure can integrate excellent properties of the two degradable resins, the melting temperatures of the degradable resin is low, thermal bonding can be carried out to replace a traditional chemical bonding method, and thus the environmental protection property is further improved.

Description

technical field [0001] The invention belongs to the technical field of cigarette filter material and its preparation, in particular to a degradable tow with an O-shaped sheath-core structure for a cigarette filter, and to the degradable tow with an O-shaped sheath-core structure for a cigarette filter method of preparation. Background technique [0002] Cigarette filters are by far the most abundant type of plastic litter in the ocean. The vast majority of cigarette filters are currently made from cellulose acetate, a plastic that takes a decade or more to decompose. Therefore, the use of degradable materials for spinning into tow to prepare cigarette filters can effectively solve the environmental pollution caused by cigarette filters for a long time. At the same time, due to the poor thermal stability and cohesiveness of existing cigarette filter materials, chemical reagents are usually used for chemical bonding, and the use of chemical reagents also has certain environme...

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): D01F8/14D01D5/34D01D5/08A24D3/08
CPCD01F8/14D01D5/34D01D5/08A24D3/08
Inventor 卢集伟白杨
Owner SHENZHEN HUAYUAN NEW MATERIAL CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com