Polylactic acid/polypropylene cigarette composite tow with sheath-core structure and preparation method thereof

A technology of composite tow and polylactic acid, applied in the direction of conjugated synthetic polymer artificial filament, application, tobacco, etc., can solve the problems of polylactic acid tobacco tow performance deterioration, low rod yield, and reduced economic benefits , to achieve excellent physical and mechanical properties, improve production capacity, and improve economic benefits

Active Publication Date: 2012-09-26
江苏合吉烟用材料有限公司 +2
View PDF9 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Currently There have been several domestic patents on polylactic acid tow for cigarettes. In Patent No.: 200610131699.0 "A Cigarette Filter Tow and Its Preparation Method", the process and methods of spinning polylactic acid resin raw materials for polylactic acid tow are introduced. Method; In Patent No.: 200710055310.3 "A Filter Stick for Cigarettes and Its Preparation Method", it is introduced that the tow of polylactic acid cigarettes is prepared by opening, bonding, wrapping, cutting and post-processing to prepare filter sticks for polylactic acid cigarettes. method, but there are some unsolvable problems in these two patents
For example, in the process of spinning polylactic acid tow from polylactic acid resin raw materials, it is necessary to carry out crimping and drying and shaping processing at a high temperature of about 100°C to improve its crimping performance and physical and mechanical propertie

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
  • Polylactic acid/polypropylene cigarette composite tow with sheath-core structure and preparation method thereof
  • Polylactic acid/polypropylene cigarette composite tow with sheath-core structure and preparation method thereof
  • Polylactic acid/polypropylene cigarette composite tow with sheath-core structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] A polylactic acid resin with a melt index of 2.68g / 10min and a melting point of 169°C is selected, and dried at 80°C for 8 hours with a vacuum drum dryer, with a moisture content of less than 100ppm; the dried raw materials are melted at 210°C. Filtration, quantitatively input the composite spinning assembly through the metering pump, and at the same time, send the polypropylene resin (the melt index is 26g / 10min) to another spinning system, after melting and filtering at 265℃, the metering pump quantitatively enters the composite spinning Silk component, the ratio of the two materials by weight is 50:50 (polylactic acid: polypropylene), the number of spinneret holes is 11400, and the shape of the spinneret holes is triangular; the cooling air at 11°C is used for cooling and molding. The oil tanker coats the surface of the tow with the oil; the tow is wound at a winding speed of 650m / min and then temporarily stored in the silk bucket. The tow is drawn ...

Example Embodiment

[0030] Example 2

[0031] Choose a polylactic acid resin with a melt index of 2.43g / 10min and a melting point of 167°C, and use a vacuum drum dryer to dry at 80°C for 8 hours, with a moisture content of less than 100ppm; melt the dried raw materials at 215°C. Filter, quantitatively input the composite spinning assembly through the metering pump, and at the same time, send the polypropylene resin (the melt index is 26g / 10min) to another spinning system, after melting and filtering at 260℃, the metering pump quantitatively enters the composite spinning Silk component, the ratio of the two materials by weight is 70:30 (polylactic acid: polypropylene), the number of spinneret holes is 13,200, and the shape of the spinneret holes is round; the cooling air at 11°C is used for cooling and molding, The oil tanker coats the surface of the tow; the tow is wound at a winding speed of 500m / min and then temporarily stored in the silk barrel. The tow is drawn in a water bath at 70°C, the dra...

Example Embodiment

[0032] Example 3

[0033] A polylactic acid resin with a melt index of 2.72g / 10min and a melting point of 168°C is selected, and dried at 80°C for 8 hours with a vacuum drum dryer, with a moisture content of less than 100ppm; the dried raw materials are melted at 210°C. Filtration, quantitatively input the composite spinning assembly through the metering pump, and at the same time, send the polypropylene resin (melt index of 26g / 10min) to another spinning system, after melting and filtering at 270℃, quantitatively input the composite spinning through the metering pump Silk component, the ratio of the two materials by weight is 25:75 (polylactic acid: polypropylene), the number of spinneret holes is 13,200, and the shape of the spinneret holes is round; the cooling air at 11°C is used for cooling and molding. The oil tanker coats the surface of the tow; the tow is wound at a winding speed of 550m / min and then temporarily stored in the silk bucket. The tow is drawn in a water ba...

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
Melt indexaaaaaaaaaa
Melting pointaaaaaaaaaa
Melt indexaaaaaaaaaa
Login to view more

Abstract

The invention relates to a polylactic acid/polypropylene cigarette composite tow with a sheath-core structure and a preparation method thereof. The polylactic acid/polypropylene cigarette composite tow is prepared by a composite spinning technology in a melt spinning method, the section of a single prepared fiber is in a surface-core structure (the core is polypropylene, and the surface is polylactic acid), the linear density of the tow is 3.5-5.5 ktex, the monofilament linear density is 2-5 dtex, the crispation number is 18-28/25 mm, and the crispation index is about 0.55. Because the surface-core structure is adopted, the inside polypropylene is used as a skeleton, the composite tow can be crimped and processed for drying and shaping at the high temperature about 100 DEG C, and the cigarette tow with good crimping performance and physical and mechanical performance can be obtained; and in addition, the polylactic acid in the tow has the characteristic of biodegradation, and the environment pollution is reduced.

Description

[0001] technical field [0002] The invention belongs to the technical field of cigarette filter composite material and its preparation, and in particular relates to a skin-core structure polylactic acid / polypropylene composite tow for cigarettes and a preparation method thereof. Background technique [0003] Cigarette filter is an important part of cigarettes. It can filter, block and absorb tar in the smoke, reduce the harm of harmful substances in the smoke to the human body, and improve the quality of the smoke. There are two main types of cigarette filter materials currently on the market: cellulose diacetate and polypropylene tobacco tow. [0004] Cellulose diacetate fiber filter is a filter with excellent performance and wide application. Acetate molecules are composed of oxygen-containing ring structures connected by ether bonds, and the branch chains contain highly polar acetyl groups (-OCOCH 3 ) and hydroxyl (-OH), so the cellulose acetate tow has a strong affini...

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): D01D5/34D01D5/253D01F8/14D01F8/06A24D3/08
Inventor 包旭东刘惠民赵献忠聂聪何映鸣杨松
Owner 江苏合吉烟用材料有限公司
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