A method for judging the use end point of film-forming liquid

A technology of film-forming liquid and end point, which is applied in the field of preparation of brittle capsules for cigarettes, can solve problems such as increased defective product rate, substandard mechanical strength, waste of film-forming liquid, etc., and achieves low cost, fast and accurate viscosity detection, achieve convenient effects

CN105628553BActive Publication Date: 2020-08-07CHINA TOBACCO GUIZHOU IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-08-07

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Abstract

The invention relates to a method for judging a use end point of film forming liquid, and belongs to the technical field of preparation of tobacco brittle capsules. In the process of preparing the tobacco brittle capsules by recycling the film forming liquid, a viscosity of the film forming liquid is measured at time intervals; a change curve of the viscosity along with time is drawn, and when the viscosity reaches the minimum value and then is rebounded, time corresponding to the minimum value is judged as the use end point of the film forming liquid. When the film forming liquid is judged to reach the use end point according to the method, the film forming liquid is replaced. The method disclosed by the invention is rapid and accurate to detect, is good in reproducibility, simple to operate, and convenient to implement, and particularly can achieve online detection, the use end point of the film forming liquid can be more timely judged, and the conditions that mechanical strength of the product does not reach the standard and a defective rate is risen are prevented.
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Description

technical field

[0001] The invention relates to a method for judging the use end point of a film-forming liquid, and belongs to the technical field of preparation of brittle capsules for cigarettes. Background technique

[0002] The concentration of alginate solution in the film-forming liquid during the preparation of crisp capsules for cigarettes by the single-hole method is related to the mechanical strength of the final capsules, and the capsules with too low mechanical strength do not meet the acceptance criteria of the final product. The average mechanical strength of the produced capsules showed a downward trend after the film-forming liquid was thoroughly recycled for many times. How to quickly and accurately judge the use end of the film-forming liquid, prevent the mechanical strength of the product from failing to meet the standard and the rate of defective products, and ensure that the film-forming liquid is replaced in time before the quality of the film-forming ...

Examples

Embodiment 1

[0029] A method for judging the use end point of the film-forming liquid, comprising the following steps: measuring the viscosity of the film-forming liquid (alginate solution, with a mass concentration of 0.8%) used in the process of preparing crisp capsules for cigarettes by a single-hole method every 0.5h; drawing The change curve of viscosity with time, the viscosity reaches the lowest value, and then rebounds, and the time corresponding to the lowest value is the end of use of the film-forming liquid. When the film-forming liquid reaches the end of use according to the above method, replace the film-forming liquid; or stop dripping immediately if the viscosity is found to increase, and replace the film-forming liquid.

Embodiment 2

[0031] A method for judging the use end point of the film-forming liquid, which differs from Example 1 only in that the time interval for measuring the viscosity is 2 hours. When the film-forming liquid reaches the end of use according to the above method, replace the film-forming liquid; or stop dripping immediately if the viscosity is found to increase, and replace the film-forming liquid.

Embodiment 3

[0033] A method for judging the use end point of the film-forming liquid. The difference from Example 1 is that the time interval for measuring the viscosity is 1 hour; the film-forming liquid alginate solution used has a mass concentration of 1%. When the film-forming liquid reaches the end of use according to the above method, replace the film-forming liquid; or stop dripping immediately if the viscosity is found to increase, and replace the film-forming liquid.