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Preparation method of composite tow for cigarette

A technology of composite spinning and tow, which is applied in the field of preparation of composite tow for cigarettes, can solve problems such as physical harm, and achieve the effects of increasing rod yield, improving curling and resilience performance, and high practical value.

Active Publication Date: 2018-10-30
上海同巽环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, glyceryl triacetate is a low-toxic chemical (LD50: 3000 mg / kg by mouth in rats). When we smoke cigarettes, glyceryl triacetate is easily precipitated and enters the human body with the smoke, which is potentially harmful to the body.

Method used

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  • Preparation method of composite tow for cigarette
  • Preparation method of composite tow for cigarette
  • Preparation method of composite tow for cigarette

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Preparation method of tow

[0038] 1. Raw material slices: component A polyethylene terephthalate PET, melting point 260℃, component B is polylactic acid PLA with conventional melting point (melting point 170℃); component A accounts for 70%wt of the total.

[0039] 2. The preparation process of tow is:

[0040] 1) Drying and crystallizing: Component B slices are dried and crystallized between 70-110°C (heating rate 5°C / h, the temperature remains unchanged when the temperature reaches 110°C), the time is 15h, and the water content in the polylactic acid is controlled to be less than 50ppm; Component A slices are dried and crystallized between 105-170℃ (heating rate is 10℃ / h, and the temperature remains unchanged when the temperature reaches 170℃), the time is 10h, and the water content is controlled to be less than 50ppm;

[0041] 2) Composite melt spinning: the number of holes in the spinneret is 800; the screw temperature of component A spinning is 280℃, the box tem...

Embodiment 2

[0054] Example 2: Preparation method of tow

[0055] 1. Raw material slices: Component A is high melting point polylactic acid (PLLA and PDLA 1:1 blend, melting point 210°C), and component B is conventional melting point PLA (melting point 160°C); component A accounts for the total The amount of 65%wt.

[0056] 2. The preparation process of tow is:

[0057] 1) Dry crystallization: Component B slices are dried and crystallized between 70-110°C (heating rate is 5°C / h, and the temperature remains unchanged when the temperature reaches 110°C), the time is 8h, and the water content in polylactic acid is controlled to be less than 50ppm; Component A slices are dried and crystallized between 105-160℃ (the heating rate is 10℃ / h, and the temperature remains unchanged when the temperature reaches 160℃), the time is 5h, and the water content is controlled below 50ppm;

[0058] 2) Composite melt spinning: the number of holes in the spinneret is 1200; the screw temperature of component A spinning...

Embodiment 3

[0071] Example 3: Preparation method of tow

[0072] 1. Raw material slices: Component A is high melting point PA6 (melting point 250°C), and component B is conventional melting point polylactic acid PLA (melting point 170°C); component A accounts for 65% wt of the total.

[0073] 2. The preparation process of tow is:

[0074] 1) Drying and crystallization: Component B slices are dried and crystallized at 70-110°C (heating rate is 5°C / h, the temperature remains unchanged when the temperature reaches 110°C) for 12 hours, and the water content in polylactic acid is controlled to be less than 50ppm; A slice is dried and crystallized at 110-150℃ (the heating rate is 10℃ / h, and the temperature remains unchanged when the temperature reaches 150℃), the time is 5h, and the water content is controlled to be less than 50ppm;

[0075] 2) Composite melt spinning: the number of holes in the spinneret is 1500; the screw temperature of component A spinning is 310℃, the box temperature is 308℃, the s...

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Abstract

The invention relates to a preparation method of a composite tow for a cigarette. The preparation method includes the processes of drying crystallization, melt compounding spinning, drafting, tensionheat setting, crimping, drying, relaxing heat setting, packaging and the like. According to the tow for the cigarette, in the forming process of a filter tip stick, water-based emulsion adhesives or glycerol triacetate plasticizers do not need to be added, and the preparation method can be used for preparing the additive-free, safe and healthy filter tip stick.

Description

Technical field [0001] The invention relates to the field of cigarettes, in particular to a method for preparing a tow for composite cigarettes. Background technique [0002] At present, the filter materials on the domestic market are mainly cellulose diacetate tow and polypropylene tow, with a total of nearly 300,000 tons, of which the consumption of cellulose diacetate tow accounts for more than 90%. Due to its excellent performance, it is mainly used in In high-end cigarettes, however, the raw materials and technical equipment of cellulose diacetate tow are all dependent on imports. In the 1990s when Sino-US relations were strained, the market derived polypropylene tow as an alternative material and was partially used in low-end cigarettes. The cellulose diacetate tow is derived from wood, and the polypropylene tow is derived from petroleum. There are environmental and energy problems in large-scale use. [0003] The polypropylene tobacco tow is cured and molded with an aqueous...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/12D01D5/34D01D5/32D01D5/30A24D3/02
CPCA24D3/02D01D5/30D01D5/32D01D5/34D01F8/12D01F8/14
Inventor 王振国
Owner 上海同巽环保科技有限公司
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