Stability Control Method of Filter Ventilation Rate

Abstract

The present invention discloses a method for controlling the stability of filter ventilation rate, which comprises: conducting an inspection on tobacco materials before entering the warehouse; judging the quality of tobacco materials according to the inspection results before entering the warehouse; conducting a sampling inspection on production samples, collecting the coefficient of variation of each section of the cigarette, and calculating the value of the synthetic fluctuation amplitude; determining the product quality stability evaluation result according to the difference between the fluctuation amplitude of the filter ventilation rate batches and / or the fluctuation amplitude between the filter ventilation rate samples and the calculated synthetic fluctuation amplitude; if the fluctuation amplitude between batches is greater than the calculated synthetic fluctuation amplitude, optimizing the quality stability of tobacco materials during entering the warehouse; if the fluctuation amplitude between samples is greater than the calculated synthetic fluctuation amplitude, optimizing the stability of the production process. The method for controlling the stability of filter ventilation rate provided by the present invention is in line with the actual production status, finds the factors that affect the fluctuation of the filter ventilation rate, controls these factors, realizes the stability control of the filter ventilation rate, and improves the quality stability of cigarette products.

Description

Technical Field

[0001] The invention relates to the technical field of cigarette smoke control, and in particular to a method for controlling the stability of filter ventilation rate. Background Art

[0002] The control of filter ventilation rate is an important indicator affecting cigarette quality. There are many indicators that affect filter ventilation rate. Therefore, when cigarette products of the same brand, different materials, formulas, and specifications are produced on different models of cigarette machines, the instability of the filter ventilation rate indicator will cause fluctuations in smoke, which will ultimately affect the stability of cigarette product quality. At present, there is no effective means to control the stability of filter ventilation rate.

[0003] Therefore, a method for controlling the stability of filter ventilation rate is urgently needed. Summary of the invention

[0004] The purpose of the present invention is to provide a method for controlling the stability of the filter ventilation rate to solve the problems in the above-mentioned prior art, to be able to conform to the actual production status, to find the factors affecting the fluctuation of the filter ventilation rate, and to control these factors to achieve stability control of the filter ventilation rate.

[0005] The present invention provides a method for controlling the stability of a filter ventilation rate, which comprises:

[0006] Conduct incoming inspection of tobacco materials;

[0007] Determine the quality of tobacco materials based on the results of incoming inspection;

[0008] Conduct random inspection on the produced samples, collect the coefficient of variation of each section of the cigarette, and calculate the synthetic fluctuation amplitude value based on the coefficient of variation of each section of the cigarette;

[0009] Determine the product quality stability evaluation result based on the difference between the fluctuation range of filter ventilation rate batches and / or the fluctuation range of filter ventilation rate samples and the calculated synthetic fluctuation range;

[0010] If the fluctuation range of filter ventilation rate between batches is greater than the calculated synthetic fluctuation range, the quality stability of tobacco materials should be optimized during storage to improve product quality stability;

[0011] If the fluctuation range between filter ventilation rate samples is greater than the calculated composite fluctuation range, the stability of the production process should be optimized to improve the stability of product quality.

[0012] In the above-mentioned filter ventilation rate stability control method, preferably, the warehousing inspection of the tobacco materials specifically includes:

[0013] The tobacco materials are inspected upon entry and the coefficients of variation corresponding to the inspection indicators of different types of tobacco materials are collected, wherein the types of tobacco materials include cigarette paper, tipping paper, shaping paper and filter rods.

[0014] In the above-mentioned filter ventilation rate stability control method, preferably, the quality determination of the tobacco material according to the warehouse inspection result specifically includes:

[0015] Conduct compliance assessment on indicators of various types of tobacco materials;

[0016] Use qualified tobacco materials in cigarette production;

[0017] Dispose of defective products according to preset standards.

[0018] The method for controlling the stability of the filter ventilation rate as described above, wherein preferably, the sampling inspection of the produced samples, collecting the coefficient of variation of each segment of the cigarette, and calculating the synthetic fluctuation amplitude value according to the coefficient of variation of each segment of the cigarette, specifically includes:

[0019] Sampling inspection is carried out on the produced samples, and the coefficient of variation of cigarette paper permeability, tobacco filling density, filter rod draw resistance, forming paper permeability and tipping paper permeability are collected, and the synthetic fluctuation amplitude value is calculated according to the fluctuation amplitude synthesis expression.

[0020] In the above-mentioned filter ventilation rate stability control method, preferably, the fluctuation amplitude synthesis expression is:

[0021]

[0022] Where: CV tobacco Indicates the coefficient of variation of tobacco segment density, in %; CV paper Indicates the coefficient of variation of cigarette paper air permeability, in %; CV filter Indicates the coefficient of variation of filter stick absorption resistance, in %; CV warp Indicates the coefficient of variation of the air permeability of the forming paper, in %; CV tipping It indicates the coefficient of variation of tipping paper air permeability, in %.

[0023] The filter ventilation rate stability control method as described above, wherein preferably, the product quality stability evaluation result is determined based on the difference between the fluctuation range of the filter ventilation rate batches and / or the fluctuation range of the filter ventilation rate samples and the calculated synthetic fluctuation range, specifically comprising:

[0024] If the fluctuation range of the filter ventilation rate between batches is smaller than the calculated synthetic fluctuation range, the evaluation result of product quality stability is that the quality between batches is stable;

[0025] If the fluctuation range of the filter ventilation rate between samples is smaller than the calculated composite fluctuation range, the product quality stability evaluation result is that the quality between samples in the same batch is stable.

[0026] The filter ventilation rate stability control method as described above, wherein preferably, when the fluctuation range of the filter ventilation rate between batches is greater than the calculated synthetic fluctuation range, the quality stability of the tobacco material is optimized during storage to improve the product quality stability, specifically including:

[0027] Among the coefficient of variation of cigarette paper air permeability, coefficient of variation of tobacco filling density, coefficient of variation of filter rod draw resistance, coefficient of variation of forming paper air permeability and coefficient of variation of tipping paper air permeability, the tobacco material with the largest coefficient of variation is optimized.

[0028] The present invention provides a method for controlling the stability of filter ventilation rate. According to the warehouse inspection result, according to the difference between the filter ventilation rate fluctuation amplitude obtained by sample detection and the calculated synthetic fluctuation amplitude, the product quality stability evaluation result is determined; if the product quality is unstable, the quality stability of tobacco materials or the stability of the production process is optimized during warehouse entry to improve the product quality stability. The present invention can be in line with the actual production status, find the factors that affect the fluctuation of the filter ventilation rate, and control these factors to achieve stability control of the filter ventilation rate, thereby improving the stability of cigarette product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0030] Figure 1 A flow chart of an embodiment of a method for controlling the stability of filter ventilation rate provided by the present invention;

[0031] Figure 2 The present invention is a logic diagram of an embodiment of a method for controlling the stability of filter ventilation rate provided by the present invention. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0033] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprises" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When a specific component is described as being connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0035] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0037] like Figure 1 and Figure 2 As shown, the filter ventilation rate stability control method provided in this embodiment specifically includes:

[0038] Step S1, inspecting tobacco materials before they enter storage.

[0039] Specifically, the tobacco materials are inspected upon entry, and the coefficients of variation corresponding to the inspection indicators of different types of tobacco materials are collected, wherein the types of tobacco materials include cigarette paper, tipping paper, forming paper and filter rods. In the specific implementation, the inspection and judgment of tobacco materials are carried out according to national standards, industry standards or enterprise standards, and the tolerance range of each material is specified in the standards.

[0040] Step S2: According to the warehouse inspection results, the quality of the tobacco materials is determined.

[0041] like Figure 2 As shown, in one embodiment of the filter ventilation rate stability control method of the present invention, the step S2 may specifically include:

[0042] Step S21, determining the compliance of indicators of various types of tobacco materials.

[0043] Step S22: using the qualified tobacco materials in cigarette production.

[0044] Step S23: dispose of the unqualified products according to the preset standards.

[0045] Step S3, sampling and testing the produced samples, collecting the coefficient of variation of each segment of the cigarette, and calculating the synthetic fluctuation amplitude value based on the coefficient of variation of each segment of the cigarette.

[0046] Specifically, random inspection is carried out on the produced samples, and the coefficient of variation of cigarette paper permeability, tobacco filling density, filter rod draw resistance, forming paper permeability and tipping paper permeability are collected, and the synthetic fluctuation amplitude value is calculated according to the fluctuation amplitude synthesis expression.

[0047] Among them, the synthetic expression of the fluctuation amplitude is:

[0048]

[0049] Where: CV tobacco Indicates the coefficient of variation of tobacco segment density, in %; CV paper Indicates the coefficient of variation of cigarette paper air permeability, in %; CV filter Indicates the coefficient of variation of filter stick absorption resistance, in %; CV warp Indicates the coefficient of variation of the air permeability of the forming paper, in %; CV tipping It represents the coefficient of variation of the air permeability of the tipping paper, in %. As for the derivation process of formula (1), the applicant has made a detailed introduction in another patent, and the invention of this application will not be repeated here.

[0050] Step S4, determining the product quality stability evaluation result according to the difference between the fluctuation range of the filter ventilation rate batches and / or the fluctuation range of the filter ventilation rate samples and the calculated synthetic fluctuation range.

[0051] During the production process, tobacco materials are inspected in batches, and the inspection data is rich and detailed. During the ventilation rate stability control process, the fluctuation range can be synthesized around the coefficient of variation of the tobacco materials, and the fluctuation range that may be caused by the batch of materials can be predicted. The possible fluctuations in the filter ventilation rate can be pre-judged by comparing with the design value and the inspection standard, and the deviation value can be controlled.

[0052] Specifically, if the fluctuation range of the filter ventilation rate between batches is smaller than the calculated composite fluctuation range, the product quality stability evaluation result is that the quality between batches is stable; if the fluctuation range of the filter ventilation rate between samples is smaller than the calculated composite fluctuation range, the product quality stability evaluation result is that the quality between samples within the same batch is stable.

[0053] Step S5: If the fluctuation range of the filter ventilation rate between batches is greater than the calculated synthetic fluctuation range, the quality stability of the tobacco materials is optimized during storage to improve the stability of product quality.

[0054] Specifically, among the coefficient of variation of cigarette paper air permeability, the coefficient of variation of tobacco filling density, the coefficient of variation of filter rod draw resistance, the coefficient of variation of shaping paper air permeability and the coefficient of variation of tipping paper air permeability, the tobacco material with the largest coefficient of variation is optimized. In a specific implementation, the source of the tobacco material can be optimized, and the inspection standard can also be optimized, which is not specifically limited in the present invention.

[0055] Step S6: If the fluctuation range between the filter ventilation rate samples is greater than the calculated combined fluctuation range, the stability of the production process is optimized to improve the stability of product quality.

[0056] In the specific implementation, the production process related to the largest coefficient of variation among the coefficient of variation of cigarette paper air permeability, the coefficient of variation of tobacco filling density, the coefficient of variation of filter rod draw resistance, the coefficient of variation of forming paper air permeability and the coefficient of variation of tipping paper air permeability is optimized to achieve stability control of filter ventilation rate, thereby improving the stability of cigarette product quality. If the product quality stability evaluation result is stable, it is also possible to find factors that can be further optimized based on the analysis of steps S5 and S6, and make continuous improvements to further improve the quality of cigarette products.

[0057] In the present invention, in the case where the fluctuation amplitude exceeds the composite value, the causes are respectively found, and the quality is finally improved.

[0058] Under the condition that the upper tolerance limit of cigarette materials is met, the maximum fluctuation range of filter ventilation rate that may occur can be calculated by formula (1). The upper tolerance limit of each parameter is expressed by the coefficient of variation. Taking the specification of plugging paper of 6000-10000CU as an example, the calculation of the synthetic upper limit fluctuation range and the contribution of each parameter are shown in Table 1:

[0059] Table 1 Upper limit of fluctuation range of cigarette filter ventilation rate

[0060]

[0061] As can be seen from Table 1, if the coefficient of variation of each physical parameter is all at the upper limit specified by the standard, it may cause the filter ventilation rate to fluctuate by 74.07%. Such a fluctuation is not easy to occur in production if analyzed from the sample mean between batches, but it is relatively close for the filter ventilation rate of each cigarette in the sample. If the fluctuation between the maximum and minimum values ​​of the cigarettes in the sample is greater than 74.07%, it means that there are uncontrolled abnormalities in the batch of samples. Taking a certain brand of cigarette products as an example, the fluctuation range within each batch of samples is analyzed, as shown in Table 2:

[0062] Table 2 Fluctuation range of filter ventilation rate in samples of a certain cigarette brand

[0063]

[0064] As can be seen from Table 2, the maximum fluctuation range of the filter ventilation rate in the samples is 58.3%, which is less than 74.07%, indicating that the physical parameters of the product are relatively stable and the coefficient of variation is less than the standard upper limit requirement; however, within the four-day production cycle, the fluctuation range of the filter ventilation rate in the samples exists in a large range of 28.9% to 58.3%, indicating that there is still room for improvement and enhancement in the production process and the stability of tobacco auxiliary materials.

[0065] The filter ventilation rate stability control method provided in the embodiment of the present invention determines the product quality stability evaluation result according to the warehouse inspection result and the difference between the filter ventilation rate fluctuation amplitude obtained by sample detection and the calculated synthetic fluctuation amplitude; if the product quality is unstable, the quality stability of the tobacco materials or the stability of the production process is optimized during warehouse entry to improve the product quality stability. The present invention can match the actual production status, find the factors that affect the filter ventilation rate fluctuation, and control these factors to achieve stability control of the filter ventilation rate, thereby improving the stability of the cigarette product quality.

[0066] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0067] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A method for controlling the stability of filter ventilation rate, characterized in that: include: Conduct incoming inspection of tobacco materials; Determine the quality of tobacco materials based on the results of incoming inspection; Conduct random inspection on the produced samples, collect the coefficient of variation of each section of the cigarette, and calculate the synthetic fluctuation amplitude value based on the coefficient of variation of each section of the cigarette; Determine the product quality stability evaluation result based on the difference between the fluctuation range of filter ventilation rate batches and / or the fluctuation range of filter ventilation rate samples and the calculated synthetic fluctuation range; If the fluctuation range of filter ventilation rate between batches is greater than the calculated synthetic fluctuation range, the quality stability of tobacco materials should be optimized during storage to improve product quality stability; If the fluctuation range between filter ventilation rate samples is greater than the calculated synthetic fluctuation range, the stability of the production process should be optimized to improve the stability of product quality. The method of sampling and testing the produced samples, collecting the coefficient of variation of each segment of the cigarette, and calculating the synthetic fluctuation amplitude value according to the coefficient of variation of each segment of the cigarette specifically includes: Sampling inspection is carried out on the produced samples, and the coefficient of variation of cigarette paper permeability, tobacco filling density, filter rod draw resistance, forming paper permeability and tipping paper permeability are collected. The synthetic fluctuation amplitude value is calculated according to the fluctuation amplitude synthesis expression. The synthetic expression of the fluctuation amplitude is: Where: CV tobacco Indicates the coefficient of variation of tobacco segment density, in %; CV paper Indicates the coefficient of variation of cigarette paper air permeability, in %; CV filter Indicates the coefficient of variation of filter stick absorption resistance, in %; CV warp Indicates the coefficient of variation of the air permeability of the forming paper, in %; CV tipping It indicates the coefficient of variation of tipping paper air permeability, in %.

2. The filter ventilation rate stability control method according to claim 1, characterized in that: The inspection of tobacco materials into storage specifically includes: The tobacco materials are inspected upon entry into the warehouse, and the coefficients of variation corresponding to the inspection indicators of different types of tobacco materials are collected, wherein the types of tobacco materials include cigarette paper, tipping paper, shaping paper and filter rods.

3. The filter ventilation rate stability control method according to claim 2, characterized in that: The quality of tobacco materials is determined based on the warehouse inspection results, specifically including: Conduct compliance assessment on indicators of various types of tobacco materials; Use qualified tobacco materials in cigarette production; Dispose of defective products according to preset standards.

4. The filter ventilation rate stability control method according to claim 1, characterized in that: Determining the product quality stability evaluation result according to the difference between the fluctuation range of filter ventilation rate batches and / or the fluctuation range of filter ventilation rate samples and the calculated synthetic fluctuation range specifically includes: If the fluctuation range of the filter ventilation rate between batches is smaller than the calculated synthetic fluctuation range, the evaluation result of product quality stability is that the quality between batches is stable; If the fluctuation range of the filter ventilation rate between samples is smaller than the calculated composite fluctuation range, the product quality stability evaluation result is that the quality between samples in the same batch is stable.

5. The filter ventilation rate stability control method according to claim 2, characterized in that: In the case where the fluctuation range of the filter ventilation rate between batches is greater than the calculated synthetic fluctuation range, the quality stability of the tobacco materials is optimized during storage to improve the quality stability of the product, specifically including: Among the coefficient of variation of cigarette paper air permeability, coefficient of variation of tobacco filling density, coefficient of variation of filter rod draw resistance, coefficient of variation of forming paper air permeability and coefficient of variation of tipping paper air permeability, the tobacco material with the largest coefficient of variation is optimized.

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