A kind of sugar alcohol modified polylactic acid copolymer material and its tow for tobacco

A polylactic acid copolymer and sugar alcohol modification technology, applied in the direction of single-component polyester rayon, application, tobacco, etc., can solve the gaps in the sensory quality of cigarettes, the difficulty of mass promotion and application, and the decline in heat resistance, etc. problem, achieve cost reduction, easy control of quality indicators, and solve the effect of sticking knives

Active Publication Date: 2016-03-23
湖北金叶玉阳化纤有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the crystallinity of polylactic acid tow is reduced, the heat resistance performance is greatly reduced. When cigarettes are tipped at high speed, the problem of blade sticking occurs due to frictional heat generated by blades. Only a large number of tows can ensure the hardness of the filter rod, and the cost of the filter rod has also risen sharply, making it difficult to popularize and apply in large quantities
Some units in China have developed polylactic acid fiber filter rods with tobacco water-based adhesives. The produced filter rods have better physical indicators such as hardness, circumference, and cut surface, and have basically solved the problems of heat resistance and cost. However, the sensory quality of cigarettes after receiving cigarettes Compared with acetate sticks, there is still a gap

Method used

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  • A kind of sugar alcohol modified polylactic acid copolymer material and its tow for tobacco
  • A kind of sugar alcohol modified polylactic acid copolymer material and its tow for tobacco
  • A kind of sugar alcohol modified polylactic acid copolymer material and its tow for tobacco

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 20.3kgTiO , 1.1kg titanate coupling agent, 79kg polylactic acid were fully mixed, and a matting whitening masterbatch was prepared at a temperature of 180°C with a twin-screw extruder for subsequent use.

[0020] Using polylactic acid as the basic component and xylitol as the grafting monomer, under the catalytic conditions of the catalyst stannous octoate, adding whitening and brightening masterbatches, heating to a molten state at 200 ° C, and synthesizing the grafting rate 0.25% (w / w) sugar alcohol-g-polylactic acid graft copolymer. Among them, 98kg of polylactic acid, 1kg of xylitol, 0.5kg of stannous octoate, and 0.5kg of matting whitening masterbatch.

[0021] The copolymerized material was blended and melt spun at 190°C, spun through a 11000 three-lobe spinneret spinneret, cooled to room temperature with ring air at 25°C, drawn in a water bath at 80°C for 3 seconds to 3.0 water bath draw ratio, 70 ℃ crimp forming, and after setting at 110 ℃ for 10 minutes, a t...

Embodiment 2

[0023] 15.5kgSiO , 1.5kg of silane coupling agent, 82.8kg of polylactic acid are fully mixed, with a twin-screw extruder at a temperature of 180 ° C to prepare matting whitening masterbatch for subsequent use.

[0024]Using polylactic acid as the basic component and mannose ester as the grafting monomer, under the catalytic conditions of the catalyst stannous octoate, adding the whitening and brightening masterbatch, heating to the molten state at 180°C, the grafting rate is synthesized It is 0.48% (w / w) sugar alcohol-g-polylactic acid graft copolymer. Among them, 96kg of polylactic acid, 2.8kg of mannose vinegar, 0.9kg of stannous octoate, and 0.3kg of matting whitening masterbatch.

[0025] The copolymerized material was blended and melt-spun at 230°C, spun through a 12,000-three-lobe spinneret spinning plate, cooled to room temperature with ring air at 25°C, and stretched in a water bath at 85°C for 5 seconds to a draft ratio of 4.2 in a water bath, 70 ℃ crimp forming, a...

Embodiment 3

[0027] 29kgTiO , 2kg of silane coupling agent, 69.3kg of polylactic acid are fully mixed, with a twin-screw extruder at a temperature of 180 ° C to prepare matting whitening masterbatch for subsequent use.

[0028] Polylactic acid is used as the basic component, sorbitol, erythritol and mannitol are used as grafting monomers, under the catalytic conditions of zinc oxide catalyst, after adding whitening and brightening masterbatch, at 180 ° C, heated to In the molten state, a sugar alcohol-g-polylactic acid graft copolymer with a graft rate of 0.6% (w / w) was synthesized. Among them, 93.2kg of polylactic acid, 1kg of sorbitol, 1kg of erythritol and 3kg of mannitol, 1.3kg of zinc oxide, and 0.5kg of matting whitening masterbatch.

[0029] The sugar alcohol-g-polylactic acid graft copolymer with a grafting rate of 0.6% (w / w) was blended and melt spun at 200 ° C, and spun through a 12000 three-lobe spinneret spinneret at 25 ° C Cool to room temperature with a circular blower, dr...

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Abstract

The invention discloses a sugar alcohol-modified polylactic acid copolymer material and application thereof to tobacco tows. The sugar alcohol-modified polylactic acid copolymer material is prepared by carrying out the following steps: adding whitening and brightening master batches into polylactic acid serving as a basic component and sugar alcohol serving as a grafted monomer under the catalytic action of stannous octoate and / or zinc oxide serving as a catalyst, heating to a molten state at 180-200 DEG C, and synthesizing a sugar alcohol-g-polylactic acid grafted copolymer; blending, fusing and spinning the copolymer material, spinning by using a spinneret plate provided with three-blade spinneret holes in sequence, annularly blowing air at 20-25 DEG C, cooling to the room temperature, performing water-bath traction at 70-95 DEG C, molding by crimping at 70-90 DEG C, and drying and sizing at 80-125 DEG C to obtain the tobacco tows. By adopting the method, the filtration and adsorption effects of a polypropylene (or polylactic acid) fiber tobacco filter tip as well as the sensory quality of cigarettes can be enhanced, and the product level is raised. Meanwhile, the production process of the filter tip is easy and convenient to implement, the produced filter tip is low in cost, and the application and popularization of the filter tip are facilitated.

Description

technical field [0001] The invention relates to a method for preparing tobacco tow, in particular to a sugar alcohol-modified polylactic acid material and a method for preparing the same. Background technique [0002] Cigarette filters play an important role in reducing coke and harm and improving the quality of cigarettes, and are an indispensable part of the cigarette production process. The cigarette filter tip material on the market mainly contains two kinds at present, and the one, acetate fiber tow, the 2nd, polypropylene fiber tow. The comprehensive performance of cellulose acetate tow is excellent, and it is mainly used in middle and high-end cigarettes. However, cellulose acetate tow is made of perennial high-quality wood, and is produced by chemical reaction to produce cellulose diacetate sheets, which are then dissolved in acetone and produced by dry spinning. out, the whole production process is complicated, the investment is large, the price is expensive, and i...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L67/04C08G63/91D01F6/92D01F1/10D01D5/253D01D5/092D01D5/14A24D3/02
Inventor周新庆方斌陈水平黄仲波胡喜怀杨建礼
Owner湖北金叶玉阳化纤有限公司