Method for detecting sealing performance of buccal product packaging box

Abstract

The embodiment of the invention provides a buccal product packaging box sealing performance detection, and the buccal product packaging box sealing performance detection provided by the embodiment of the invention comprises the steps: firstly packaging a buccal product sample for testing in a packaging box, and then weighing the buccal product sample to obtain a first weight; heating the packaging box in which the buccal product sample for testing is packaged until at least part of liquid is vaporized, and weighing to obtain a second weight; and then the sealing performance of the packaging box is determined according to the first weight and the second weight. Wherein the sealing performance is directly quantified by adopting the weight loss ratio, the sealing performance difference of packaging boxes of different brands and structures can be accurately distinguished, external force does not need to be applied to the packaging boxes, the test can be completed in a sample intact state, in addition, expensive equipment is not needed in the test process, the test steps are simple and easy to implement, and the method is suitable for large-scale application; the problems that according to an existing air tightness testing method, box deformation is likely to be caused, and the air tightness difference of different packaging boxes cannot be distinguished are solved.

Description

Technical Field

[0001] This application relates to the technical field of oral products, and particularly to a method for detecting the sealing performance of a packaging box for oral products. Background Art

[0002] Oral tobacco products contain easily oxidizable components such as nicotine salts and flavors, and their quality stability is directly limited by the packaging sealing performance. The current mainstream polypropylene (PP) plastic boxes have an oxygen transmission rate (OTR) of 100 - 300 cm 3 / (m 2 ·day·atm), and the water vapor transmission rate (WVTR) is 0.5 - 1.0 g·mm / (m 2 ·day), making it difficult to block the penetration of trace amounts of oxygen and moisture, resulting in the degradation of active substances and a shortened shelf life.

[0003] However, in related technologies, the airtightness test methods for the packaging boxes of oral tobacco products mainly rely on positive pressure or negative pressure tests, which easily cause the boxes to deform or even break, resulting in test failures, and cannot effectively distinguish the sealing differences of different packaging boxes.

[0004] Therefore, there is an urgent need to develop a non-destructive, easy-to-operate, economical and efficient sealing detection method to meet the test requirements for the sealing performance of packaging boxes. Summary of the Invention

[0005] The technical problem to be solved by this application is to provide a method for detecting the sealing performance of a packaging box for oral products, so as to improve the problems that the existing airtightness test methods are prone to cause box deformation and cannot distinguish the sealing differences of different packaging boxes.

[0006] To improve the above problems, this application is implemented through the following technical solutions:

[0007] This application provides a method for detecting the sealing performance of a packaging box for oral products, including:

[0008] Weigh the packaging box after encapsulating the test oral product sample to obtain the first weight;

[0009] Heat the packaging box encapsulating the test oral product sample until at least part of the liquid in the test oral product sample vaporizes, and perform a weighing process to obtain the second weight;

[0010] Determine the sealing performance of the packaging box according to the first weight and the second weight.

[0011] Further, before weighing the packaging box after encapsulating the test oral product sample, the method further includes:

[0012] Mix microcrystalline cellulose and purified water according to the theoretical water content, granulate them, and encapsulate them with non-woven fabric to form the sample of the test buccal product.

[0013] Further, in the detection method, encapsulating the sample of the test buccal product in a packaging box includes:

[0014] Encapsulate multiple samples of the test buccal product in the packaging box according to the actual packaging standard.

[0015] Further, after encapsulating the sample of the test buccal product in the packaging box, the detection method further includes:

[0016] Seal the packaging box.

[0017] Further, in the detection method, heating the packaging box containing the sample of the test buccal product includes:

[0018] Place the packaging box flat in a drying device for drying treatment.

[0019] Further, in the detection method, the heating temperature for heating the packaging box is 80 - 120 °C and the time is 1 - 3 h.

[0020] Further, in the detection method, the heating temperature for heating the packaging box is 101 - 105 °C and the time is 1.5 - 2.5 h.

[0021] Further, in the detection method, determining the tightness of the packaging box according to the first weight and the second weight includes:

[0022] Determine the weight loss rate according to the first weight and the second weight;

[0023] When the weight loss rate is less than or equal to the weight loss rate threshold, determine that the tightness of the packaging box is qualified;

[0024] When the weight loss rate is greater than the weight loss rate threshold, determine that the tightness of the packaging box is unqualified.

[0025] Further, before weighing the heated packaging box, the detection method further includes:

[0026] Cool the packaging box.

[0027] Further, in the detection method, the cooling treatment includes:

[0028] Place the packaging box at room temperature for 0.1 - 1 h.

[0029] Compared with the prior art, the embodiments of the present application include the following advantages:

[0030] In the embodiments of the present application, in the method for detecting the sealing performance of the oral product packaging box, first, the test oral product sample is encapsulated in the packaging box and weighed to obtain the first weight; then, the packaging box is successively subjected to heat treatment and weighed to obtain the second weight; and then, according to the first weight and the second weight, the sealing performance of the packaging box is determined. Among them, the weight loss rate is used to directly quantify the sealing performance, which can not only accurately distinguish the sealing performance differences of packaging boxes of different brands and structures, but also does not require external force to be applied to the packaging box, and the test can be completed in the intact state of the sample. In addition, the test process does not require expensive equipment, the test steps are simple and easy to implement, and it is suitable for large-scale application, improving the problems that the existing airtightness test methods are prone to cause box deformation and cannot distinguish the sealing performance differences of different packaging boxes.

[0031] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a flowchart of the method for detecting the sealing performance of the oral product packaging box provided by the embodiments of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0034] Oral products such as oral cigarettes contain easily oxidizable components such as nicotine salts and flavors, and their quality stability is directly limited by the packaging sealing performance. The applicant found that the conventional airtightness test methods mainly rely on positive pressure or negative pressure tests. Among them, the traditional positive pressure detection method needs to inject 0.2 - 0.5 MPa of compressed air into the package interior, while the negative pressure method needs to establish a vacuum environment below -80 kPa in a closed chamber, both of which will cause plastic deformation or even structural damage to the plastic box, and the sample rejection rate after testing is as high as more than 60%, seriously restricting the on-line detection application in the production process.

[0035] Although existing precision instruments such as helium mass spectrometers can achieve non-destructive detection, their million-level equipment costs and complex operation processes cannot meet the requirements of large-scale production; while the encapsulation defect detection based on machine vision can only identify macroscopic gaps > 50 μm and lacks the ability to distinguish micron-level leakage channels; the immersion test method is affected by surface tension and is difficult to quantitatively evaluate the leakage rate difference of < 10 - 3 Pa·m 3 / s.

[0036] In view of the above problems, the embodiments of the present application provide a method for detecting the sealing performance of the oral product packaging box, asFigure 1 As shown, it includes steps 101 to 103:

[0037] Step 101: Enclose the test oral product sample in a packaging box and weigh it to obtain the first weight.

[0038] In this step, the test oral product sample is put into the packaging box and sealed to simulate the actual packaging standard of the oral product. Then, an electronic scale is used to record the weight of the whole box to obtain the above-mentioned first weight, which can be denoted as G1.

[0039] In this step, the test oral product sample can be an actual product such as oral tobacco, or a simulated product specifically used for detecting the sealing performance of the packaging box.

[0040] Step 102: Heat the packaging box containing the test oral product sample until at least part of the liquid in the test oral product sample vaporizes, and then weigh it to obtain the second weight.

[0041] In this step, first, through heat treatment, the water vapor in the sample is accelerated to vaporize. If it is sealed, the water vapor remains in the box; if the sealing is not good, the gas will be lost. After cooling to liquefy the water vapor, the lost weight is the water vapor leaked due to poor sealing. Then, an electronic scale is used to record the weight of the whole box to obtain the above-mentioned second weight, which can be denoted as G2.

[0042] Step 103: Determine the sealing performance of the packaging box according to the first weight and the second weight.

[0043] In this step, since the degree of water vapor overflow in the packaging box is directly related to its sealing performance, and the difference between the first weight and the second weight is caused by the overflow of water vapor in the packaging box, the sealing performance of the packaging box can be determined based on the difference between the first weight and the second weight.

[0044] Optionally, in one implementation, the above step 103 includes steps 301 to 303:

[0045] Step 301: Determine the weight loss rate according to the first weight and the second weight.

[0046] In this step, based on the difference between the first weight and the second weight, the above-mentioned weight loss rate is calculated. Specifically, the following formula can be used to calculate the weight loss rate μ:

[0047]

[0048] Among them, substituting the measured values of the first weight G1 and the second weight G2, the weight loss rate μ of the packaging box sample can be calculated.

[0049] Step 302: When the weight loss rate is less than or equal to the weight loss rate threshold, it is determined that the sealing performance of the packaging box is qualified.

[0050] In this step, the weight loss rate threshold is the weight loss rate value for defining whether the sealing performance of the packaging box is qualified. The weight loss rate threshold is 0.5% - 2.5%, and can be specifically adjusted based on the actual situation of the test oral products. For example, it can be one of 0.5%, 0.8%, 1.0%, 1.5%, 2.0%, 2.5% or a range value between any two of them.

[0051] In this step, when the calculated weight loss rate is less than or equal to the weight loss rate threshold, it indicates that the weight change of the packaging box containing the test oral products before and after drying is small, that is, the powder dissipation amount is small, so it is determined that the sealing performance of the packaging box is qualified.

[0052] Step 303: When the weight loss rate is greater than the weight loss rate threshold, it is determined that the sealing performance of the packaging box is unqualified.

[0053] In this step, the weight loss rate threshold is the weight loss rate value for defining whether the sealing performance of the packaging box is qualified. When the calculated weight loss rate is greater than the weight loss rate threshold, it indicates that the weight change of the packaging box containing the test oral product samples before and after drying is large, that is, the powder dissipation amount is large, so it is determined that the sealing performance of the packaging box is unqualified.

[0054] In this embodiment, by comparing the weight loss rate with the preset weight loss rate threshold, the actual sealing performance of the packaging box is directly defined by the weight loss rate, which can quantify the difference in sealing performance between different packaging boxes and quickly determine the actual sealing performance of the packaging box.

[0055] In the embodiments of the present application, first, the test oral product samples are encapsulated in the packaging box and then weighed to obtain the first weight; then the packaging box is heated and weighed in sequence to obtain the second weight; then, based on the first weight and the second weight, the sealing performance of the packaging box is determined. Among them, using the weight loss rate to directly quantify the sealing performance can not only accurately distinguish the difference in sealing performance of packaging boxes of different brands and structures, but also does not require external force on the packaging box, and the test can be completed in the intact state of the sample. In addition, the test process does not require expensive equipment, the test steps are simple and easy to implement, suitable for large-scale applications, and improves the problem that the existing airtightness test method is easy to cause the box to deform and cannot distinguish the difference in sealing performance of different packaging boxes.

[0056] Optionally, in some embodiments, before weighing after encapsulating the test oral product samples in the packaging box, the method provided by the embodiments of the present application further includes step 100:

[0057] Step 100: Mix microcrystalline cellulose and purified water according to the theoretical water content, granulate the mixture, and encapsulate it with non-woven fabric to form the sample of the test buccal product.

[0058] In this step, considering that actual products such as buccal cigarettes contain a mixture of flavors, nicotine, and water, which are very easy to oxidize and volatilize, and the water content of products taken out at different times varies greatly. Therefore, a simulated product made by granulating a mixture of microcrystalline cellulose and purified water and then encapsulating it with non-woven fabric is used for the detection of the sealing performance of the packaging box. After the sample is heated, only the purified water is vaporized, and the weight of the microcrystalline cellulose itself does not change, avoiding the influence of the vaporization of substances such as flavors in the actual buccal product on the detection result. It can reduce the detection error while meeting the test objectives, and has better stability than the product made by using the raw materials in terms of the ratio of finished product raw materials.

[0059] Optionally, in some embodiments, the above step 100 specifically includes:

[0060] Measure the water content of the microcrystalline cellulose; according to the water content of the microcrystalline cellulose and the theoretical water content in the sample of the test buccal product, mix the microcrystalline cellulose and purified water and then granulate them, and then encapsulate them with non-woven fabric to form the sample of the test buccal product.

[0061] In this embodiment, considering that the water content rate of microcrystalline cellulose is different under different storage conditions and environmental temperature and humidity, measuring the water content of microcrystalline cellulose first and then matching the water content makes the water content in the formed sample of the test buccal product more accurate, that is, closer to the above-mentioned theoretical water content.

[0062] Among them, the above-mentioned theoretical water content can be 35%, and it can be specifically adjusted according to the actual water content of the sample of the buccal product.

[0063] Among them, during the process of encapsulating the sample of the test buccal product with non-woven fabric, control the weight of each PCS to be maintained at 0.5 - 0.6 g to simulate the weight of the actual buccal product.

[0064] Optionally, in some embodiments, encapsulating the sample of the test buccal product in a packaging box includes:

[0065] Encapsulate multiple pieces of the sample of the test buccal product in the packaging box according to the actual packaging standard.

[0066] In this embodiment, loading multiple pieces of the sample of the test buccal product into the packaging box and sealing it according to the actual packaging standard can simulate the actual production and packaging state, making the measurement result more accurate. Among them, multiple pieces of the sample of the test buccal product can specifically be 20 pieces of the sample of the test buccal product.

[0067] Optionally, in one embodiment, after encapsulating the test oral product sample in the packaging box, the method for detecting the sealing performance of the oral product sample packaging box provided by the embodiments of the present application further includes:

[0068] Sealing the packaging box.

[0069] In this embodiment, after encapsulating the test oral product sample in the packaging box, the packaging box is sealed, and then weighed to simulate the actual shipping conditions, so that the calculation result is more in line with the actual production scenario.

[0070] Optionally, in one embodiment, heating the packaging box encapsulating the test oral product sample includes:

[0071] Placing the packaging box flat in a drying device for drying treatment.

[0072] In this embodiment, the packaging box encapsulating the test oral product sample is placed flat in a drying device such as an oven for drying treatment, so as to vaporize the water vapor in the packaging box by high temperature evaporation, and then use an electronic scale to record the weight of the whole box, so as to quickly obtain the above-mentioned second weight and quickly complete the test.

[0073] Optionally, in some embodiments, the heating temperature for heating the packaging box is 60-120°C and the time is 1-3h, which can effectively vaporize the water vapor in the packaging box and complete the drying treatment of the packaging box encapsulating the test oral product sample.

[0074] Optionally, in some embodiments, the heating temperature for heating the packaging box is 101-105°C and the time is 1.5-2.5h. Drying treatment is carried out in an environment with a temperature higher than the boiling point of water, which can make the water inside the packaging box boil and quickly and fully volatilize into steam, so as to achieve the purpose of quickly completing the test.

[0075] Optionally, in some embodiments, before weighing the heated packaging box, the method for detecting the sealing performance of the oral product packaging box provided by the embodiments of the present application further includes:

[0076] Cooling the packaging box.

[0077] In this embodiment, after drying the packaging box encapsulating the test oral product sample, it is cooled. Since the simulated sample only contains cellulose and water, the cooling treatment can liquefy all the vaporized water, which is convenient for weighing to obtain the above-mentioned second weight, and avoid the weighing result error caused by high temperature, thereby improving the accuracy of the detection result.

[0078] Optionally, in some possible embodiments, the above cooling treatment includes:

[0079] Place the packaging box at room temperature for 0.1 - 1 h.

[0080] In this embodiment, after the heat treatment is completed, the packaging box containing the test oral product sample is removed from the heating device, and then left standing in a room temperature environment such as a laboratory for 0.1 - 1 h, for example, 0.1 h, 0.2 h, 0.3 h, 0.4 h, 0.5 h, 0.6 h, 0.7 h, 0.8 h, 0.9 h, 1 h, so that the packaging box can be cooled to room temperature, thereby simulating actual use conditions and making the calculation results more in line with the actual use scenario.

[0081] To make the invention object, technical solution and beneficial effects of the present application clearer, the present application will be further described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present application and not to limit the scope of the present application.

[0082] The present application will be described in detail below through embodiments.

[0083] Example 1

[0084] (1) Sample preparation: Measure the moisture content of microcrystalline cellulose, and prepare purified water at room temperature for later use; calculate the amounts of microcrystalline cellulose and purified water to be added according to the proportion of the theoretical water content of 35%; mix microcrystalline cellulose and purified water and then granulate, and then encapsulate them with non-woven fabric into test oral tobacco products, and the weight of each test oral tobacco product is kept at 0.5 - 0.6 g.

[0085] (2) Sample bagging: Put the made oral tobacco into a box, with 20 pieces in each box, then seal it with a sealing strip on the side of the sample box, and use an electronic scale to record the weight of the whole box, denoted as G1.

[0086] (3) Sample heat treatment: Open the oven, set the oven temperature to 103 °C, and after waiting for the temperature to stabilize, place the sample box flat in the oven and heat for 2 hours.

[0087] (4) Cooling and recording: Turn off the power of the oven, take out the sample from the oven, cool the sample for 30 minutes, and then record the weight of the whole box of samples, denoted as G2.

[0088] (5) Calculation of weight loss rate: Calculate the weight loss rate μ of G1 and G2 according to the following formula:

[0089] Repeat steps (1) - (5) three times for the packaging boxes of three brands A, B, C, and D respectively to obtain test results, and then record and analyze according to the calculation results.

[0090] Comparative Example 1

[0091] The difference between Comparative Example 1 and Example 1 is as follows:

[0092] In step (1), after granulation, the test oral tobacco product is no longer encapsulated with non-woven fabric.

[0093] In step (2), the granulated samples are directly scattered and put into the box without attaching a sealing strip to the side, and then the weight of the whole box is recorded using an electronic scale, denoted as G1.

[0094] Comparative Example 2

[0095] The difference between Comparative Example 2 and Example 1 is as follows:

[0096] In step (1), after granulation, the test oral tobacco product is no longer encapsulated with non-woven fabric.

[0097] In step (2), after the granulated samples are scattered and put into the box, they are flattened using a jig, without attaching a sealing strip to the side, and then the weight of the whole box is recorded using an electronic scale, denoted as G1.

[0098] The test results of Example 1, Comparative Example 1, and Comparative Example 2 are shown in Tables 1, 2, and 3 respectively.

[0099] Table 1

[0100]

[0101] Table 2

[0102]

[0103]

[0104] Table 3

[0105]

[0106]

[0107] As can be seen from Table 1, in the method of the present application, after encapsulation with a sealing strip, weighing is carried out, then heating and cooling are performed, and finally weighing is carried out again to calculate the weight loss rate. The average weight loss rate range of all brands is 0.5% - 2.1%, and the deviation is 0.1% - 0.3%, indicating that the test results show high consistency among different brands and can meet the requirements of accurate sealing evaluation.

[0108] As can be seen from Table 2, when the powder is directly put into the box without using a sealing strip for encapsulation, the average weight loss rate of all brands measured is 1.5% - 4.3%. The range is relatively high and the deviation increases significantly. For some brands such as Brand C, it reaches 4.3%, indicating a significant difference in sealing performance. The deviation value of the weight loss rate is between 0.4% and 1.6%. Especially Brands A and C show greater instability, indicating that the design without a sealing strip has a greater impact on the performance of the packaging box. The accuracy of the sealing performance evaluation result of the scheme of directly putting the powder into the box without using a sealing strip for encapsulation is insufficient and it is difficult to accurately reflect the actual sealing performance of the packaging box.

[0109] As can be seen from Table 3, when the powder is pressed flat and put into the box without using a sealing strip for encapsulation, the average weight loss rate of all brands measured is 2.1% - 4.2%. The range is relatively high and the deviation increases significantly, indicating a significant difference in sealing performance. The deviation value of the weight loss rate is between 0.9% and 1.9%, and the test consistency is poor, indicating that pressing flat fails to effectively improve the sealing performance. The accuracy of the sealing performance evaluation result of the scheme of pressing the powder flat and putting it into the box without using a sealing strip for encapsulation is insufficient and it is difficult to accurately reflect the actual sealing performance of the packaging box.

[0110] In this application, first, the oral product sample for testing is encapsulated in the packaging box and weighed to obtain the first weight. Then, the packaging box is heated and weighed in sequence to obtain the second weight. Then, according to the first weight and the second weight, the sealing performance of the packaging box is determined. Among them, using the weight loss rate to directly quantify the sealing performance can not only accurately distinguish the sealing performance differences of packaging boxes of different brands and structures, but also does not require external force to be applied to the packaging box, and the test can be completed in the intact state of the sample. In addition, the test process does not require expensive equipment, the test steps are simple and easy to implement, and it is suitable for large-scale applications, improving the problems that the existing airtightness test methods are easy to cause the box to deform and cannot distinguish the sealing performance differences of different packaging boxes.

[0111] Although the preferred embodiments of the embodiments of this application have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the claims are intended to be interpreted to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of this application.

[0112] The above has introduced in detail a method for detecting the sealing performance of an oral product packaging box provided by this application. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A method for detecting the sealing property of an oral product packaging box, characterized in that: include: The test oral product sample is sealed in a packaging box and weighed to obtain a first weight; The packaging box encapsulating the test oral product sample is heated until at least a portion of the liquid in the test oral product sample is vaporized, and then weighed to obtain a second weight; The sealing performance of the packaging box is determined according to the first weight and the second weight.

2. The detection method according to claim 1, characterized in that: Before packaging the test oral product sample in a packaging box and weighing it, the method further comprises: According to the theoretical water content, microcrystalline cellulose and purified water are mixed and granulated, and then packaged with non-woven fabric to form the oral product sample for testing.

3. The detection method according to claim 1, characterized in that: The oral product sample for testing is packaged in a packaging box, including: According to the actual packaging standard, a plurality of test oral product samples are packaged in the packaging box.

4. The detection method according to claim 1, characterized in that: After the oral product for testing is packaged in a packaging box, the following is also included: The packaging box is sealed.

5. The detection method according to claim 1, characterized in that: The packaging box encapsulating the test oral product sample is heated, comprising: The packaging box is placed flat in a drying device for drying.

6. The detection method according to claim 1, characterized in that: The packaging box is heated at a temperature of 80 to 120° C. for a time of 1 to 3 hours.

7. The detection method according to claim 1, characterized in that: The packaging box is heated at a temperature of 101 to 105° C. for a time of 1.5 to 2.5 hours.

8. The detection method according to claim 1, characterized in that: Determining the sealing property of the packaging box according to the first weight and the second weight includes: determining a weight loss rate according to the first weight and the second weight; When the weight loss rate is less than or equal to the weight loss rate threshold, determining that the sealing of the packaging box is qualified; When the weight loss rate is greater than the weight loss rate threshold, it is determined that the sealing of the packaging box is unqualified.

9. The detection method according to any one of claims 1 to 8, characterized in that: Before weighing the heated packaging box, the method further comprises: The packaging box is subjected to a cooling process.

10. The detection method according to claim 9, characterized in that: Cooling treatment includes: The packaging box is placed at room temperature for 0.1 to 1 hour.

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