Method for testing adhesive strength of internal sizing of tobacco shreds

Abstract

The invention relates to the field of heating cigarettes, in particular to a tobacco shred internal sizing adhesive force testing method which comprises the following steps: inserting a to-be-tested cigarette into a heating cavity of a heating smoking set, and heating and smoking; separating and taking out the heated and smoked cigarette to be detected from the heating smoking set, and dividing the cigarette to be detected into two parts, namely a tobacco shred section and a filter stick section; and inserting an extraction piece into the tobacco shred section along the axial direction of the tobacco shred section, separating the tobacco shreds and the cigarette paper in the tobacco shred section at a constant speed by means of the extraction piece, measuring the tensile force used in the separation process, and representing the adhesive force degree of the applied glue in the tobacco shreds according to the tensile force. The method can accurately, scientifically and objectively reflect the capability of bonding the tobacco shred section and the cigarette paper by the adhesive in the to-be-detected cigarette, quantitatively, standardly and objectively reflect the bonding force degree of the applied adhesive in the tobacco shred, and provides effective analysis data for the improvement of the tobacco shred formula and process of the heated cigarette; quantitative analysis is carried out on the internal sizing adhesive strength degree of tobacco shreds with different formulas and processes, and optimization and improvement are guided.

Description

Technical Field

[0001] The invention relates to the technical field of heated cigarettes, and in particular to a method for testing the adhesive force of glue applied inside tobacco shreds. Background Art

[0002] At present, heated cigarettes usually refer to tobacco products that are heated but not burned, and are often used in conjunction with heated tobacco utensils for smoking; gluing inside tobacco specifically refers to: along the axial direction of the cigarette, one or more glue lines are applied on the outside of the heated cigarette tobacco segment and the inside of the cigarette paper to prevent relative displacement between the two when external forces intervene. The ability of tobacco to prevent detachment is significantly affected by the selection of different glues and the gluing process. At present, after the heated cigarettes are heated in the heated tobacco device, the tobacco segments often detach from the cigarette paper and remain inside the heating chamber when the cigarettes are pulled out. On the one hand, the heat shrinkage of the tobacco weakens the restraint of the cigarette paper on it, and on the other hand, part of the tobacco is carbonized by heat and adheres to the surface of the internal heating element. To solve the above problems, in recent years, some products have applied one or more glue lines on the outside of the heated cigarette tobacco segment and the inside of the cigarette paper along the axial direction of the cigarette to increase the restraint of the cigarette paper after heating. However, there is currently no mature testing method for evaluating the anti-falling ability of cigarettes after gluing. Most of them are qualitatively evaluated by manually pulling out the cigarettes after artificial heating, which makes it difficult to achieve a standard and objective evaluation of the corresponding anti-falling performance. Summary of the invention

[0003] The present invention provides a method for testing the adhesion of internal gluing of cut tobacco, which can accurately determine the strength of the anti-slipping ability of heated cigarettes using the internal gluing process, and can also provide necessary data support for the selection of adhesives and the optimization of the gluing process.

[0004] The present invention adopts the following technical solution: A method for testing the adhesive strength of internal gluing in tobacco shreds, comprising: Insert the cigarette to be tested into the heating chamber of the heated smoking device for heating and smoking; Separate the tested cigarette from the heated smoking device after the heating and smoking is completed, and divide the tested cigarette into two parts: a tobacco shred section and a filter rod section; Insert the extraction piece into the tobacco segment along the axial direction of the tobacco segment, splice the tobacco segment and the filter rod segment, fix the filter rod segment, separate the tobacco and cigarette paper in the tobacco segment at a uniform speed with the help of the extraction piece, measure the pulling force used in the separation process, and characterize the degree of adhesive bonding in the tobacco based on the pulling force.

[0005] Furthermore, the extraction member includes a baffle portion with a circular contour and a rod-shaped extraction portion arranged at the center of the baffle portion.

[0006] Furthermore, a surface of the baffle portion in the extraction member that contacts the tobacco in the tobacco segment is set as an adhesive surface.

[0007] Furthermore, the baffle portion in the extraction piece is a circular pancake structure; the structure of the extraction portion in the extraction piece is adapted to the heating element in the heating smoking device, when the heating element is a needle type, the rod-shaped extraction portion is a cylindrical structure; when the heating element is a sheet type, the rod-shaped extraction portion is a sheet-type rectangular parallelepiped structure.

[0008] Furthermore, the step of inserting the cigarette to be tested into the heating chamber of the heated smoking device for heating and smoking may specifically include: Heat the cigarette to be tested inserted in the smoking device and use the smoking machine to smoke it in HCI mode.

[0009] Furthermore, after the extraction piece is inserted into the tobacco segment along the axial direction of the tobacco segment, the method further comprises: restoring the tested cigarette after smoking, and splicing and compounding the separated tobacco segment and filter rod segment.

[0010] Furthermore, the separated tobacco shreds and filter rod segments are spliced ​​and composited; specifically comprising: The upper part of the filter rod segment should be extended by a hollow paper tube of 1-3mm. The outer diameter of the paper tube should be equal to the outer diameter of the cigarette paper. After the end face of the tobacco segment containing the extraction piece is aligned with the end face of the hollow paper tube, a sticky film should be used to radially wrap and splice the above-mentioned tobacco segment and filter rod segment. The sticky film should be wrapped around for at least one week.

[0011] Furthermore, the method of separating the tobacco and cigarette paper in the tobacco segment at a uniform speed by means of the extraction member and measuring the pulling force used in the separation process comprises: Fix the restored cigarette to be tested on the tensile testing device, fix either the filter rod segment of the cigarette to be tested or the extraction part in the extraction member, and move the other along the axial direction of the cigarette to be tested to separate the tobacco and cigarette paper in the tobacco segment.

[0012] Furthermore, during the separation process, the extraction member moves at a uniform speed of less than 50-100 mm / min.

[0013] Furthermore, characterizing the degree of adhesive strength of the glue in the tobacco shreds according to the pulling force includes: obtaining a maximum pulling force during the separation process, and characterizing the degree of adhesive strength of the glue in the tobacco shreds according to the maximum pulling force.

[0014] Beneficial effects: The present application provides a method for testing the adhesive force of tobacco shreds, comprising: inserting a cigarette to be tested into a heating chamber of a heated tobacco device for heating and smoking; separating and taking out the cigarette to be tested from the heated tobacco device after heating and smoking, and dividing the cigarette to be tested into two parts: a tobacco shred segment and a filter rod segment; inserting an extraction piece into the tobacco shred segment along the axial direction of the tobacco shred segment, separating the tobacco shreds and cigarette paper in the tobacco shred segment at a uniform speed with the help of the extraction piece, and measuring the tensile force used in the separation process, and characterizing the degree of adhesive force of the tobacco shreds according to the tensile force. In the test method of the present application, after the heating of the cigarette is completed, the extraction piece is inserted into the channel opened in the tobacco shred segment by the heating element of the inner core of the heated tobacco device. Subsequently, the filter rod of the heated cigarette is fixed by an insertion and extraction force tester, and the extraction piece located outside the tobacco shred segment is simultaneously lifted up. When a relative displacement occurs between the tobacco shred segment and the cigarette paper, the maximum tensile force value in this process is recorded, which is used as an indicator to characterize the adhesive force applied inside the tobacco shreds. This method can accurately, scientifically and objectively reflect the ability of the adhesive in the tested cigarette to bond the tobacco cut segment to the cigarette paper, and realize the quantitative, standardized and objective evaluation of the degree of adhesive bonding in the tobacco cut, with high accuracy. This method can provide effective data analysis support for the optimization of tobacco cut formula and process improvement of heated cigarettes, and can quantitatively analyze the degree of adhesive bonding in tobacco cut under different formulas and process conditions, thereby guiding its optimization and improvement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A flow chart of a method for testing the adhesive force of internal glue in tobacco shreds in this application; Figure 2 A simplified flow chart of a method for testing the adhesive strength of internal gluing in tobacco according to the present application; Figure 3 A schematic diagram of the structure of an extraction member in the method for testing the adhesive strength of glue applied inside tobacco shreds in this application; Figure 4 Another structural schematic diagram of the extraction member in the method for testing the adhesive force of internal glue in tobacco shreds of the present application; 1. Baffle part, 2. Extraction part. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0019] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0021] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0022] The present invention will be described in detail below with reference to the accompanying drawings: like Figure 1-4 As shown, a method for testing the adhesive force of internal gluing in tobacco shreds comprises: Insert the cigarette to be tested into the heating chamber of the heated smoking device for heating and smoking; Separate the tested cigarette from the heated smoking device after the heating and smoking is completed, and divide the tested cigarette into two parts: a tobacco shred section and a filter rod section; Insert the extraction piece into the tobacco segment along the axial direction of the tobacco segment, splice the tobacco segment and the filter rod segment, fix the filter rod segment, separate the tobacco and cigarette paper in the tobacco segment at a uniform speed with the help of the extraction piece, measure the pulling force used in the separation process, and characterize the degree of adhesive bonding in the tobacco based on the pulling force.

[0023] The test method of the present application is to insert the extraction piece into the channel opened in the tobacco segment by the heating element of the inner core of the heated tobacco device after the heating of the cigarette is completed. Subsequently, the filter rod of the heated cigarette is fixed by an insertion and extraction force testing machine, and the extraction piece located outside the tobacco segment is simultaneously lifted up. When relative displacement occurs between the tobacco segment and the cigarette paper, the maximum tensile force value in this process is recorded as an indicator to characterize the adhesive relay force applied inside the tobacco. This method can accurately, scientifically and objectively reflect the ability of the adhesive in the tested cigarette to bond the tobacco segment to the cigarette paper, and realize the quantification, standardization and objective evaluation of the degree of adhesive relay force in the tobacco, with a high degree of accuracy. This method can provide effective data analysis support for the optimization of the tobacco formula and the improvement of the process of heated cigarette tobacco, and can quantitatively analyze the degree of adhesive relay force in the tobacco under different formulas and process conditions, thereby guiding its optimization and improvement work.

[0024] Furthermore, the extraction piece includes a baffle portion 1 with a circular contour and a rod-shaped extraction portion 2 arranged in the center of the baffle portion; a side of the baffle portion in the extraction piece that contacts tobacco in the tobacco segment is set as a viscose surface, and when the extraction piece is inserted, the baffle portion can fit tightly with the tobacco end face of the tobacco segment; at the same time, it can be set here to prevent the extraction piece from being relatively displaced in the axial direction of the tobacco segment when the tobacco segment and the filter rod segment are subsequently spliced, thereby affecting the fitting operation.

[0025] Specifically, the baffle portion in the extraction piece is a circular cake structure, whose diameter is 0.1mm smaller than the cross-sectional diameter of the tobacco segment and whose thickness is not greater than 1mm; this structural design can drive the tobacco segment to move as a whole during extraction, while not generating relative friction with the inner side of the cigarette paper. The structure of the extraction portion in the extraction piece is adapted to the heating element in the heating tobacco device. When the heating element is a needle type, the rod-shaped extraction portion is a cylindrical structure, and its diameter should be 0.1-0.2mm smaller than the diameter of the heating element that heats the cigarette; when the heating element is a sheet type, the rod-shaped extraction portion is a sheet-shaped rectangular parallelepiped structure, and its length and width should be 0.05-0.1mm smaller than the length and width of the heating element that heats the cigarette. This structural design can ensure that the extraction portion can be smoothly inserted into the reserved passage inside the tobacco segment, and the position of the tobacco segment is relatively fixed, so as to avoid relative displacement during the extraction process that affects the accuracy of the test results.

[0026] Furthermore, the step of inserting the cigarette to be tested into the heating chamber of the heated smoking device for heating and smoking may specifically include: Heat the cigarette to be tested inserted in the smoking device and use the smoking machine to smoke it in HCI mode.

[0027] Furthermore, after the extraction piece is inserted into the tobacco segment along the axial direction of the tobacco segment, the method further comprises: restoring the tested cigarette after smoking, and splicing and compounding the separated tobacco segment and filter rod segment.

[0028] Furthermore, the separated tobacco shreds and filter rod segments are spliced ​​and composited; specifically comprising: The upper part of the filter rod segment splicing should be extended by 1-3mm of the hollow paper tube, and the outer diameter of the paper tube should be equal to the outer diameter of the cigarette paper. After the end face of the tobacco segment containing the extraction piece is aligned with the end face of the hollow paper tube, the above tobacco segment and filter rod segment should be radially wrapped and spliced ​​with an adhesive film, and the adhesive film should be wrapped around for at least one week. Through the coating of the adhesive film, the tobacco segment and filter rod segment of the cigarette to be tested can be fixed, and the cigarette to be tested can be spliced ​​and restored to prevent the cigarette to be tested from breaking during the test process.

[0029] After the tobacco segment and the filter rod segment are spliced ​​and restored, the cigarette to be tested can be conveniently fixed as a whole with the help of the filter rod segment, while not affecting the separation of the extraction piece, tobacco and cigarette paper in the tobacco segment.

[0030] Furthermore, the method of separating the tobacco and cigarette paper in the tobacco segment at a uniform speed by means of the extraction member and measuring the pulling force used in the separation process comprises: Fix the restored cigarette to be tested to the tensile testing device, fix any one of the filter rod segment and the extraction part of the extraction piece of the cigarette to be tested, and move the other side along the axial direction of the cigarette to be tested to separate the tobacco and cigarette paper in the tobacco segment. During the separation process, the extraction piece moves at a uniform speed of less than 50-100mm / min. Specifically, the cigarette to be tested should be placed vertically on a device with a tensile testing function, the filter rod segment is fixed to the lower part of the instrument through the device clamp, and the extraction part of the extraction piece is fixed to the upper part of the instrument. When the extraction piece separates the tobacco segment and the cigarette paper, the filter rod segment remains stationary, and the extraction piece moves upward at a uniform speed of less than 50-100mm / min, and the change in tension during the separation process is recorded, and the maximum tension is selected as the index of the adhesive bonding force of the tobacco; that is, the maximum tension during the separation process is obtained, and the degree of adhesive bonding force of the tobacco is characterized according to the maximum tension.

[0031] It should be noted that for some existing heating devices (heating smoking devices) equipped with extractors, the extractors can facilitate the extraction of cigarettes and enhance the fixation of cigarettes inserted into smoking devices. The test method for the adhesion of glue applied to tobacco also includes the operation of dissociating the extractor; please refer to Figure 2. Specifically, a method for testing the adhesive force of tobacco shreds includes: inserting a heated cigarette into an inner core heating device and using a smoking machine to smoke in HCI mode; after smoking is completed, pulling out the device extractor to separate the cigarette and the extractor from the heating device as a whole, and then separating the cigarette and the extractor; cutting the cigarette to be tested into a tobacco segment and a filter rod segment; inserting an extraction piece along the passage left when the inner core heating element is inserted into the cigarette to be tested, so that the baffle part of the extraction piece is close to the cross-section of the tail end of the tobacco segment; using a sticky film to radially cover and splice the tobacco segment and the filter rod segment with the extraction piece; fixing the cigarette filter rod segment and the end of the tobacco extraction piece to the tensile testing device; separating the tobacco segment and the cigarette paper, and recording the change in tension during the separation process, and selecting the maximum tension as the index of the adhesive force of tobacco shreds.

[0032] Table 1 Test data of adhesive strength of tobacco shreds

[0033] Compared with the prior art, the test method of this application can accurately, scientifically and objectively demonstrate the ability of the adhesive in the tested cigarette to bond the tobacco shreds to the cigarette paper, and realize the quantitative, standardized and objective evaluation of the degree of adhesive bonding inside the tobacco shreds, with a high degree of accuracy. This method provides strong data support for the improvement of the formula and process of heated cigarette tobacco shreds, and can quantitatively analyze the degree of adhesive bonding inside the tobacco shreds under different formulas and processes, thereby guiding its optimization and improvement.

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for testing the adhesive strength of tobacco shreds, characterized in that: include: Insert the cigarette to be tested into the heating chamber of the heated smoking device for heating and smoking; Separate the tested cigarette from the heated smoking device after the heating and smoking is completed, and divide the tested cigarette into two parts: a tobacco shred section and a filter rod section; Insert an extraction piece into the tobacco segment along the axial direction of the tobacco segment, separate the tobacco and cigarette paper in the tobacco segment at a uniform speed with the help of the extraction piece, measure the pulling force used in the separation process, and characterize the degree of adhesive bonding in the tobacco based on the pulling force.

2. The method for testing the adhesive strength of tobacco shreds according to claim 1, characterized in that: The extraction member comprises a baffle portion with a circular contour and a rod-shaped extraction portion arranged at the center of the baffle portion.

3. The method for testing the adhesive strength of tobacco shreds according to claim 2, characterized in that: The side of the baffle portion in the extraction member that contacts the tobacco in the tobacco section is set as an adhesive surface.

4. The method for testing the adhesive strength of tobacco shreds according to claim 2, characterized in that: The baffle portion in the extraction piece is a circular pancake structure; the structure of the extraction portion in the extraction piece is adapted to the heating element in the heating smoking device. When the heating element is a needle type, the rod-shaped extraction portion is a cylindrical structure; when the heating element is a sheet type, the rod-shaped extraction portion is a sheet-type rectangular parallelepiped structure.

5. The method for testing the adhesive force of internal glue in tobacco according to any one of claims 1 to 4, characterized in that: Inserting the cigarette to be tested into the heating chamber of the heating smoking device for heating and smoking; Specifically include: Heat the cigarette to be tested inserted in the smoking device and use the smoking machine to smoke it in HCI mode.

6. The method for testing the adhesive strength of tobacco shreds according to claim 5, characterized in that: After the extraction piece is inserted into the tobacco segment along the axial direction of the tobacco segment, the method further comprises: restoring the smoked cigarette to be tested, and splicing and compounding the separated tobacco segment and the filter rod segment.

7. The method for testing the adhesive strength of tobacco shreds according to claim 6, characterized in that: The method of splicing and compounding the separated tobacco shreds and filter rod segments specifically comprises: The upper part of the filter rod segment should be extended by a hollow paper tube of 1-3mm. The outer diameter of the paper tube should be equal to the outer diameter of the cigarette paper. After the end face of the tobacco segment containing the extraction piece is aligned with the end face of the hollow paper tube, a sticky film should be used to radially wrap and splice the above-mentioned tobacco segment and filter rod segment. The sticky film should be wrapped around for at least one week.

8. The method for testing the adhesive strength of tobacco shreds according to claim 7, characterized in that: The method of separating the tobacco and cigarette paper in the tobacco shreds at a uniform speed by means of an extraction member and measuring the pulling force used in the separation process comprises: Fix the restored cigarette to be tested on the tensile testing device, fix either the filter rod segment of the cigarette to be tested or the extraction part in the extraction member, and move the other along the axial direction of the cigarette to be tested to separate the tobacco and cigarette paper in the tobacco segment.

9. The method for testing the adhesive strength of tobacco shreds according to claim 8, characterized in that: During the separation process, the extraction member moves at a constant speed of less than 50-100 mm / min.

10. The method for testing the adhesive strength of tobacco shreds according to claim 8, characterized in that: Characterizing the degree of adhesive force of the glue applied in the tobacco shreds according to the pulling force includes: obtaining the maximum pulling force in the separation process, and characterizing the degree of adhesive force of the glue applied in the tobacco shreds according to the maximum pulling force.

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