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Heat-resistant polylactic acid cigarette tows and preparing method thereof

A technology of polylactic acid and polylactic acid resin, applied in the field of cigarette tow, can solve the problems of poor elastic recovery force of heat-resistant polylactic acid cigarette tow, reduced filter rod bulkiness, low filter rod output rate, etc., and achieves the reduction of fiber Stiffening phenomenon, strong elastic recovery, good heat resistance effect

Inactive Publication Date: 2016-12-14
金国安
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat-resistant polylactic acid cigarette tow has poor elastic resilience. When the filter rod is produced when the temperature rises suddenly, the random molecular structure in the fiber amorphous region in the cigarette tow instantly forms a rigid body, and the fiber stiffens. Phenomenon, resulting in a decrease in the fluffiness of the filter rod, so that the rod yield of the filter rod is not high, and the rod yield is only 1.4 million to 1.45 million per ton

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: a heat-resistant polylactic acid shredded cigarette bundle, comprising the following components in parts by weight:

[0043] Polylactic acid resin 100

[0044] Colored Adsorbents 1.8

[0045] Crystal nucleating agent 0.3

[0046] The coloring adsorbent is formed by uniformly mixing polylactic acid resin, calcium sulfate and titanium dioxide in a weight ratio of 1:1:1; the crystal nucleating agent is zeolite powder with a particle size of 100nm-1500nm.

[0047] In this embodiment, the molecular weight of the polylactic acid resin is 50,000-300,000, the relative viscosity is 2.4-4.0, the melting point is 160-180°C, the glass transition temperature is 55-61°C, the crystallization temperature is 70-115°C, and isotactic The index is more than 97%, the optical activity is more than 90%, the degree of racemization is less than 5%, the residual monomer content is less than 1%, the molecular weight distribution is less than 2.21%, and the melt index is 5g / 10min~2...

Embodiment 2

[0052] Embodiment 2: a heat-resistant polylactic acid shredded cigarette bundle, comprising each component of the following parts by weight:

[0053] Polylactic acid resin 100

[0054] Colored Adsorbent 5

[0055] Crystal Nucleating Agent 8

[0056] The coloring adsorbent is formed by uniform mixing of polylactic acid resin, calcium sulfate and titanium dioxide in a weight ratio of 1:1:1; the crystal nucleating agent is zeolite powder with a particle size of 100nm-1500nm, sepiolite powder with a particle size of 100nm-1500nm, 100nm - Mixture of 1500nm attapulgite powder, 100nm-1500nm aluminium silicate powder, 100nm-1500nm kaolin powder and 100nm-1500nm silicon dioxide powder.

[0057] In this embodiment, the molecular weight of the polylactic acid resin is 50,000-300,000, the relative viscosity is 2.4-4.0, the melting point is 160-180°C, the glass transition temperature is 55-61°C, the crystallization temperature is 70-115°C, and isotactic The index is more than 97%, the o...

Embodiment 3

[0063] Embodiment 3: a kind of heat-resistant polylactic acid cigarette tow, including each component of following parts by weight:

[0064] Polylactic acid resin 100

[0065] Colored Adsorbents 2.5

[0066] Crystal Nucleating Agent 6

[0067] The coloring adsorbent is formed by uniformly mixing polylactic acid resin, calcium sulfate and titanium dioxide in a weight ratio of 1:1:1; the crystallization nucleating agent is sepiolite powder with a particle size of 100nm-1500nm.

[0068] In this embodiment, the molecular weight of the polylactic acid resin is 50,000-300,000, the relative viscosity is 2.4-4.0, the melting point is 160-180°C, the glass transition temperature is 55-61°C, the crystallization temperature is 70-115°C, and isotactic The index is more than 97%, the optical activity is more than 90%, the degree of racemization is less than 5%, the residual monomer content is less than 1%, the molecular weight distribution is less than 2.21%, and the melt index is 5g / 10mi...

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Abstract

The invention discloses heat-resistant polylactic acid cigarette tows and a preparing method thereof. By weight, 1-5 parts of coloring adsorbent and 0.3-8 parts of crystallization and nucleation agent are added into 100 parts of polylactic resin; polylactic resin, calcium sulfate and titanium dioxide are mixed uniformly by the weight ratio of 1:1:1 to form the coloring adsorbent, and the crystallization and nucleation agent is one or a mixture of zeolite powder with the particle size of 100-1500 nm, sepiolite powder with the particle size of 100-1500 nm, attapulgite powder with the particle size of 100-1500 nm, aluminium silicate powder with the particle size of 100-1500 nm, kaolin powder with the particle size of 100-1500 nm and silicon dioxide powder with the particle size of 100-1500 nm. The heat-resistant polylactic acid cigarette tows have the advantages of being high in bulkiness property and elastic recovery on the basis of high heat resistance and capable of increasing output rate of filter sticks.

Description

technical field [0001] The invention relates to a cigarette tow, in particular to a heat-resistant polylactic acid cigarette tow and a preparation method thereof. Background technique [0002] Cigarette filter is an important part of cigarettes, which can improve the taste of cigarettes and reduce the harm of harmful substances in smoke to human body. The traditional material for preparing cigarette tow is cellulose diacetate, which needs to use a large amount of harmful substances such as sulfuric acid, oxalic acid or acetone during the preparation process of cellulose diacetate, which causes serious environmental pollution, complicated production process, long production cycle and high cost. Polylactic acid (PLA) is non-toxic and tasteless. Its material comes from nature and belongs to nature. It will biodegrade and eventually generate carbon dioxide and water. It can be recycled without leaving any pollutants. It is an excellent green and environmentally friendly biodegra...

Claims

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Application Information

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IPC IPC(8): D02G3/02D01D5/08D01D11/06D01F1/10D01F6/92D01F11/08D02G1/20D02J1/22A24D3/02A24D3/10
CPCD02G3/02A24D3/02A24D3/10D01D5/08D01D11/06D01F1/10D01F6/92D01F11/08D02G1/205D02J1/224D10B2331/04
Inventor 金国安
Owner 金国安