Forming adaptability evaluation method for slotted paper base material

Abstract

The invention belongs to the technical field of tobacco packaging, and particularly relates to a forming adaptability evaluation method for a slotted paper base material. The forming adaptability evaluation method of the slotted paper base material comprises the following steps: S1, testing the stiffness of the paper base material; s2, slotting the paper base material in the step S1 to form a slotted paper base material with at least one preset slot line; s3, respectively testing the stiffness of the slotted paper base material in the step S2 near the slot line; s4, calculating the arithmetic average of the stiffness obtained by testing in the step S3 to obtain the average stiffness, and subtracting the stiffness of the paper base material obtained by testing in the step S1 from the average stiffness to obtain a stiffness difference value; and S5, evaluating the forming adaptability of the slotted paper base material according to the stiffness difference value. The method for evaluating the forming adaptability of the slotted paper base material can fully reflect the visual effect of the appearance after the slotted paper base material is folded and formed into a hard cigarette packaging box.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tobacco packaging, and particularly relates to a forming adaptability evaluation method of a slotted paper substrate. BACKGROUND

[0002] With the increasing demand of consumers for the personalization of cigarette packaging, the top and bottom cover hand-made box is loved by many consumers in the medium and high-end cigarette box type due to its hard and angular appearance. However, the top and bottom cover box needs to be manually formed, which has high production cost, long manufacturing cycle, and non-full mechanized printing process. In addition, automatic cigarette filling equipment must be introduced in the cigarette loading process, which increases the process difficulty.

[0003] However, the current common cigarette mechanized small box packaging is realized through the indentation process, and the indentation corner of the formed packaging is relatively round, without the angular and full appearance of the high-end top and bottom cover hand-made box.

[0004] There is a current strip box slotting technology, but the strip box slotting process only needs to ensure that the slot line is accurate, straight and stable on a straight line, so as to realize the clear folding and angular effect of the three-dimensional structure of the strip box. However, the small box positioning slotting process is more difficult, because the box type of the small box is more complex, and the slot line is more, which needs to be staggered and positioned. Otherwise, the paper surface on the outer side will be deformed due to the influence of the thickness of the paper itself when the paper is folded and formed, so that the appearance of the small cigarette box becomes uneven, affecting the aesthetic degree of the cigarette package. Since the small box slotting process is less used in the field of tobacco packaging technology, the selection of paper substrates can only be tested by the flatness and angle of each surface of the box body after actual slotting to determine whether the paper substrate is suitable for slotting. The experimental efficiency is low, which leads to a longer product development cycle. SUMMARY

[0005] The purpose of the present application is to improve the selection efficiency of the substrate of the slotted cigarette packaging box, and to solve the technical problem: The present application provides a forming adaptability evaluation method of a slotted paper substrate, comprising the following steps: S1, substrate stiffness test: test the stiffness of the paper substrate; S2, substrate slotting: slotting the paper substrate in step S1 to form a slotted paper substrate with at least one preset slot line, the slotted paper substrate is used to form a slotted cigarette packaging box; S3, slot line stiffness test: test the stiffness of the slotted paper substrate in step S2 near the slot line; S4, stiffness difference calculation: calculate the arithmetic mean of each stiffness obtained in step S3 to obtain the average stiffness, and subtract the stiffness of the paper substrate obtained in step S1 from the average stiffness to obtain the stiffness difference; S5, forming evaluation: the forming adaptability of the slotted paper base material is evaluated according to the stiffness difference value.

[0006] Preferably, the stiffness is tested using a stiffness testing system, the stiffness testing system comprising: a crease stiffness clamp, a cutting device and a stiffness tester; The testing of the stiffness in steps S1 and S3 comprises the following steps: (1) installing the crease stiffness clamp on the stiffness tester; (2) cutting the paper base material or the slotted paper base material into a test sample using the cutting device; (3) installing the test sample on the crease stiffness clamp, starting the stiffness tester to test and obtaining the crease stiffness of the test sample.

[0007] Preferably, the slotted slot depth in step S3 is 0.10mm-0.20mm, 0.20mm-0.30mm, 0.30mm-0.50mm or 0.50-1.00mm.

[0008] Preferably, the slotted slot width in step S3 is 0.10mm-0.50mm, 0.50mm-1.50mm, 1.50mm-3.50mm or 3.50-4.00mm.

[0009] Preferably, the slot line in step S3 is a crease along the slot line; the slot line crease is arranged on the slotted paper base material and is used to form the edge of the slotted cigarette packaging box.

[0010] Preferably, the slotted cigarette packaging box comprises a box part and a flip cover, the box part comprises a front wall, a bottom wall and a rear wall connected in sequence; the creases comprise the slot line crease and the indentation line crease; The two opposite sides of the front wall are respectively provided with first box side walls, and the two opposite sides of the rear wall are respectively provided with second box side walls; when the box part is formed, the first box side walls are bonded to the second box side walls, or the second box side walls are bonded to the first box side walls; the flip cover comprises a cover rear wall, a cover top wall, a cover front wall and a cover inner piece connected in sequence; the two opposite sides of the cover rear wall are respectively provided with first cover side walls, and the two opposite sides of the cover front wall are respectively provided with second cover side walls; when the flip cover is formed, the first cover side walls are bonded to the second cover side walls, or the second cover side walls are bonded to the first cover side walls; The first box side walls are foldably connected to the front wall, and the creases form a first edge of the slotted cigarette packaging box; The second box side walls are foldably connected to the rear wall, and the creases form a second edge of the slotted cigarette packaging box; The front wall, the bottom wall and the rear wall are all foldably connected, and the creases form a third edge of the slotted cigarette packaging box; The first cover side wall is foldably connected with the cover back wall, and a crease forms a fourth edge of the slotted cigarette packaging box; The second cover side wall is foldably connected with the cover front wall, and a crease forms a fifth edge of the slotted cigarette packaging box; The cover back wall, the cover top wall and the cover front wall are foldably connected, and a crease forms a sixth edge of the slotted cigarette packaging box.

[0011] Preferably, in step S5, if the stiffness difference value is less than zero, it is determined that the slotted paper substrate is not suitable for forming the slotted cigarette packaging box.

[0012] Preferably, in step S5, the greater the stiffness difference value, the more suitable the slotted paper substrate is for forming the slotted cigarette packaging box.

[0013] Preferably, the slotted paper substrate is white cardboard, transfer paper or composite paper.

[0014] Preferably, the hard box cigarette packaging box is a packaging box for accommodating 20 cigarette rods.

[0015] Compared with the prior art, the beneficial effects of the present patent are: 1. The slotted paper substrate forming adaptability evaluation method of the present patent can fully reflect the visual effect of the slotted paper substrate after being folded and formed into a hard cigarette packaging box.

[0016] 2. Application of the present patent can avoid repeated folding and forming of the slotted paper substrate, quickly obtain the forming adaptability of the slotted paper substrate, avoid repeated testing of the flatness, length and angle of the slotted paper substrate after being folded and formed into a box, reduce the evaluation time when selecting the slotted paper substrate, and improve the development efficiency of the slotted cigarette box. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above content of the present application and the following specific embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are only examples of the claimed technical solutions.

[0018] Figure 1 A schematic diagram of folding and forming a slotted paper substrate into a slotted cigarette packaging box; Figure 2 A photo of a slotted paper substrate before being folded and formed into a slotted cigarette packaging box; Figure 3 A photo of folding and forming an aluminum foil composite paper (gold) into a slotted cigarette packaging box; Figure 4 A perspective schematic diagram of a slotted cigarette packaging box; Figure 5 A photo of a slotted cigarette packaging box.

[0019] Reference numerals: 1: box portion 11: front wall 12: bottom wall 13: rear wall 14: first box side wall 15: second box side wall 16: first bottom corner piece 2: flip-top box lid 21: lid rear wall 22: lid top wall 23: lid front wall 24: lid inner piece 25: first lid side wall 26: second lid side wall 27: second bottom corner piece 10: first slot line 20: second slot line 30: third slot line 40: fourth slot line 50: fifth slot line 60: sixth slot line 3: cutout 4: misalignment line design 100: front face 101: front face opening line 200: back face 300: top face 400: bottom face 500: left side face 600: right side face 1000: platinum embossed composite paper box 2000: transfer silver light column paper 3000: aluminum foil composite paper (gold) 4000: aluminum foil composite paper (silver) DETAILED DESCRIPTION

[0020] The detailed features and advantages of the present application are described in detail in the detailed description, which is sufficient to enable any person skilled in the art to understand the technical content of the present application and to implement it, and according to the description, claims and drawings disclosed in the specification, those skilled in the art can easily understand the related purposes and advantages of the present application.

[0021] It should be noted that in this specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In order to make the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings. The experimental methods described in the embodiments of the present application are all conventional methods unless otherwise specified, and the materials, reagents and the like used in the following examples can be obtained from commercial channels unless otherwise specified.

[0023] Stiffness test

[0024] A stiffness tester, brand: HANATEK, manufacturer: Hanatek Instruments Rhopoint House was used.

[0025] Stiffness testing steps: 1. Ensure that the crease stiffness fixture is correctly installed on the instrument.

[0026] 2. Use the cutting device to cut the test sample.

[0027] 3. Place the sample in the fixture and press the test button.

[0028] 4. After the test is complete, press the "exit" key to save the results.

[0029] The present patent relates to a method for evaluating the forming adaptability of a slotted paper substrate, comprising the following steps: S1, substrate stiffness testing: testing the stiffness of the paper substrate; S2, substrate slitting: slitting the paper substrate in step S1 to form a slotted paper substrate having at least one preset slot line; S3, slot line stiffness testing: testing the stiffness of the slotted paper substrate in step S2 near the slot line; S4, stiffness difference calculation: calculating the arithmetic mean of each stiffness obtained in step S3 to obtain the average stiffness, and subtracting the stiffness of the paper substrate obtained in step S1 from the average stiffness to obtain the stiffness difference; S5, forming evaluation: evaluating the forming adaptability of the slotted paper substrate according to the stiffness difference.

[0030] A stiffness testing system is used to test the stiffness, which comprises a crease stiffness fixture, a cutting device and a stiffness tester; The testing of stiffness in steps S1 and S3 comprises the following steps: (1) installing the stiffness fixture on the stiffness tester; (2) using the cutting device to cut the paper substrate or the slotted paper substrate into a test sample; (3) installing the test sample on the stiffness fixture and starting the stiffness tester to test and obtain the crease stiffness of the test sample.

[0031] The slotting depth of the slotting in step S3 is 0.10mm~0.20mm, 0.20mm~0.30mm, 0.30mm~0.50mm or 0.50~1.00mm. The slotting width of the slotting is 0.10mm~0.50mm, 0.50mm~1.50mm, 1.50mm~3.50mm or 3.50~4.00mm. The slot line is a crease along the slot line; the slot line crease is arranged on the slotted paper substrate, used to form the edge of the slotted cigarette packaging box.

[0032] Reference Figure 1In some embodiments, a typical slotted cigarette packaging box includes a box part 1 and a flip cover 2; the box part 1 includes a front wall 11, a bottom wall 12 and a rear wall 13 connected in sequence; the two opposite sides of the front wall are respectively provided with first box side walls 14, and the two opposite sides of the rear wall are respectively provided with second box side walls 15; when the box part is formed, the first box side walls are bonded to the second box side walls, or the second box side walls are bonded to the first box side walls; the flip cover 2 includes a cover rear wall 21, a cover top wall 22 and a cover front wall 23 and a cover inner piece 24 connected in sequence; the two opposite sides of the cover rear wall are respectively provided with first cover side walls 25, and the two opposite sides of the cover front wall are respectively provided with second cover side walls 26; when the flip cover is formed, the first cover side walls are bonded to the second cover side walls, or the second cover side walls are bonded to the first cover side walls; the first box side walls are foldably connected to the front wall, and the crease is a creasing line crease; the second box side walls are foldably connected to the rear wall, and the crease is a creasing line crease 7; the front wall, the bottom wall and the rear wall are foldably connected, and the crease is a slotted line crease 6; the first cover side walls are foldably connected to the cover rear wall, and the crease is a creasing line crease; the second cover side walls are foldably connected to the cover front wall, and the crease is a creasing line crease; the cover rear wall, the cover top wall and the cover front wall are foldably connected, and the crease is a slotted line crease. Compared with the creasing line, the slotted line has spaced-apart slot openings in the line, and is not prone to wrinkles and bulges when folded and is easier to fold. The two opposite sides of the bottom wall are provided with first bottom corner pieces 16, which are connected to one of the first box side walls and the second box side walls, and one side of the first bottom corner piece is foldably connected to one of the first box side walls and the second box side walls by a creasing line or a slotted line; the remaining side of the first bottom corner piece is a cutting knife line. The two opposite sides of the cover top wall are provided with second bottom corner pieces 27, which are connected to one of the first cover side walls and the second cover side walls, and one side of the second bottom corner piece is foldably connected to one of the first cover side walls and the second cover side walls by a creasing line or a slotted line; the remaining side of the second bottom corner piece is a cutting knife line 8. One of the first box side walls and the second box side walls is provided with a point gluing area 5, which is distributed with glue penetration points; the structure of the glue penetration points facilitates the penetration of the glue, thereby making the bonding more firm; preferably, the point gluing area accounts for 2 / 3-4 / 5 of the entire side wall area. One of the first cover side walls and the second cover side walls is provided with a point gluing area, which is distributed with glue penetration points, the side part of the cover top wall and the cover rear wall is provided with a misalignment line design 4, and the side part lines in both are misaligned. The knife line 8 of the cover top wall and the creasing line 7 of the cover rear wall are misaligned. Preferably, the misalignment of the lines of the two sides is designed according to the thickness of the formed paperboard; for example, when the thickness of the paperboard is 0.5 mm, the line position difference of the two is designed to be 0.5 mm; the design of the misalignment line has the advantage that when the box-type cigarette package is formed, the front size is larger than the back size, and each of the left and right sides is offset by 0.5 mm, the front (large) package and the back (small) surface; a cutout 3 is provided between the second box side wall and the first cover side wall, which facilitates foldable connection.

[0033] The first box side wall is foldably connected with the front wall, and the crease forms a first edge of the slotted cigarette packaging box; the second box side wall is foldably connected with the rear wall, and the crease forms a second edge of the slotted cigarette packaging box; the front wall, the bottom wall and the rear wall are foldably connected, and the crease forms a third edge of the slotted cigarette packaging box; the first cover side wall is foldably connected with the cover rear wall, and the crease forms a fourth edge of the slotted cigarette packaging box; the second cover side wall is foldably connected with the cover front wall, and the crease forms a fifth edge of the slotted cigarette packaging box; the cover rear wall, the cover top wall and the cover front wall are foldably connected, and the crease forms a sixth edge of the slotted cigarette packaging box.

[0034] In step S5, if the stiffness difference is less than zero, it is determined that the slotted paper substrate is not suitable for forming the slotted cigarette packaging box. In step S5, the greater the stiffness difference, the more suitable the slotted paper substrate is for forming the slotted cigarette packaging box.

[0035] At least one of the edges of the slotted cigarette packaging box can be formed by a crease. For example, see Figure 1 The second cover side wall is bonded to the first cover side wall; the first box side wall is foldably connected with the front wall, and the crease is a creasing line crease 7; the second box side wall is foldably connected with the rear wall, and the crease is a creasing line crease 7; the front wall, the bottom wall and the rear wall are foldably connected, and the crease is a slotted line crease 6; the first cover side wall is foldably connected with the cover rear wall, and the crease is a creasing line crease 7; the second cover side wall is foldably connected with the cover front wall, and the crease is a creasing line crease 7; the cover rear wall, the cover top wall and the cover front wall are foldably connected, and the crease is a slotted line crease 6. Compared with the creasing line, the slotted line has a plurality of spaced-apart slots in the line, and is not prone to wrinkles and bulges when folded and is easier to fold.

[0036] The slotted paper substrate is white cardboard, transfer paper or composite paper.

[0037] The hard box cigarette packaging box is a packaging box for containing 20 cigarette rods.

[0038] Examples

[0039] The present application will be further described below in conjunction with specific examples. In each example, the paper substrate used is a commercially available product, and its manufacturing process basically includes: Platinum embossed composite paper: paper and film compounding → back coating → drying → varnishing → drying → winding → slitting → packaging.

[0040] Transfer silver light column paper: paper and film compounding → back coating → drying → stripping → varnishing → drying → winding → slitting → packaging.

[0041] Aluminum foil composite paper: aluminum foil compounding → PET compounding → embossing → slitting → sheeting.

[0042] Before slitting, the parameters of the paper substrate are as follows: Table 1, slotting width and depth of paper substrate

[0043] Referring to the slotting method of Chinese patent 202410229748.2, 202310843510.4, the paper substrate is slotted, and the slot line refers to Figure 2 .

[0044] The slotting width and depth are shown in Table 2.

[0045] Table 2, slotting width and depth

[0046] After slotting, the stiffness of each slot line is tested, and the results are shown in Table 3. In other embodiments, slot lines can also be formed on other substrates for forming hard box corners. Figure 1 Table 3, slot line stiffness after slotting

[0047]

[0048] Appearance evaluation Each paper substrate is folded into a GDX hard box to obtain three platinum embossed composite paper boxes 1000, transfer silver light column paper 2000, aluminum foil composite paper (gold) 3000, and aluminum foil composite paper (silver) 4000, respectively. Referring to

[0049] , the angles of each corner and the flatness of each surface of the box body are measured, and the data is arranged in Tables 4, 5, 6, and 7. The hard box has a maximum side of the opening line 101, which is the front surface 100. According to the spatial relationship shown in Figures 3~5 , the other surfaces are in turn the back surface 200, the top surface 300, the bottom surface 400, the left side surface 500, and the right side surface 600. Figure 4

[0050] Table 4, platinum embossed composite paper appearance evaluation data

[0051]

[0052] Table 5, transfer silver light column paper appearance evaluation data

[0053]

[0054] Table 6, aluminum foil composite paper (gold) appearance evaluation data

[0055] ​

[0056] Table 7, aluminum foil composite paper (silver)

[0057]

[0058] It can be seen that, from the perspective of the sharpness of the angle and the degree of angle stability, the platinum gold relief composite paper is superior to the transfer silver light column paper, which is superior to the aluminum foil composite paper (gold), which is superior to the aluminum foil composite paper (silver). When the angle data is close to 90 degrees, the hard box packaging box has sharp edges and has a very striking visual effect.

[0059] In addition, from the perspective of flatness and edge length stability, the platinum gold relief composite paper is superior to the transfer silver light column paper, which is superior to the aluminum foil composite paper (gold), which is superior to the aluminum foil composite paper (silver). The smaller the flatness, the more stable the edge length, which also means that the hard box packaging box has sharp edges, and also shows that the substrate is better adapted to the slotting process, and still has good flatness and stability after slotting and boxing.

[0060] In addition, the average value of the stiffness of each slot line after slotting according to the use requirements is higher than the stiffness of the paper substrate before slotting, which is more suitable for slotting, and the hard box packaging box has a better appearance. Moreover, the greater the stiffness difference, the more suitable the paper substrate is for slotting, and the better the appearance of the hard box packaging box.

[0061] Similarly, it should be noted that although the present application has been described with reference to the current specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or replacements can be made without departing from the spirit of the present application, therefore, any changes or modifications to the above embodiments within the scope of the spirit of the present application will fall within the scope of the claims of the present application.

Claims

1. A method for evaluating the molding adaptability of slotted paper substrate, characterized in that, Includes the following steps: S1. Substrate stiffness test: Tests the stiffness of the paper substrate; S2. Substrate grooving: Grooving is performed on the paper substrate described in step S1 to form a grooved paper substrate with at least one preset groove line. The grooved paper substrate is used to form a grooved cigarette packaging box. S3. Groove stiffness test: Test the stiffness of the grooved paper substrate near the groove line as described in step S2. S4. Stiffness difference calculation: Calculate the arithmetic mean of the stiffness values ​​obtained in step S3 to obtain the average stiffness. Subtract the stiffness of the paper substrate obtained in step S1 from the average stiffness to obtain the stiffness difference. S5. Molding evaluation: Evaluate the molding adaptability of the slotted paper substrate based on the stiffness difference.

2. The molding adaptability evaluation method according to claim 1, characterized in that, The stiffness is tested using a stiffness testing system, which includes: a crease stiffness fixture, a cutting device, and a stiffness tester; The stiffness test described in steps S1 and S3 includes the following steps: (1) Install the stiffness fixture onto the stiffness tester; (2) Use a cutting device to cut the paper substrate or the slotted paper substrate into test samples; (3) Install the test sample on the stiffness fixture and start the stiffness tester to test and obtain the crease stiffness of the test sample.

3. The molding adaptability evaluation method according to claim 1, characterized in that, The groove depth in step S3 is 0.10mm~0.20mm, 0.20mm~0.30mm, 0.30mm~0.50mm or 0.50~1.00mm.

4. The molding adaptability evaluation method according to claim 1, characterized in that, The groove width described in step S3 is 0.10mm~0.50mm, 0.50mm~1.50mm, 1.50mm~3.50mm, or 3.50~4.00mm.

5. The molding adaptability evaluation method according to claim 1, characterized in that, The groove line mentioned in step S3 is set along the crease of the groove line; the crease of the groove line is set on the grooved paper substrate and is used to form the edge of the grooved cigarette packaging box.

6. The molding adaptability evaluation method according to claim 5, characterized in that, The slotted cigarette packaging box includes a box part and a flip-top lid. The box part includes a front wall, a bottom wall and a rear wall connected in sequence. The creases include the slotted line creases and the crease lines. The front wall has a first box sidewall on each of its two opposite sides, and the rear wall has a second box sidewall on each of its two opposite sides. During the box forming process, the side wall of the first box is bonded to the side wall of the second box, or the side wall of the second box is bonded to the side wall of the first box. The flip-top lid includes a rear wall, a top wall, a front wall, and an inner sheet connected in sequence; the rear wall has a first side wall on each of its two opposite sides, and the front wall has a second side wall on each of its two opposite sides; when the flip-top lid is formed, the first side wall is bonded to the second side wall, or the second side wall is bonded to the first side wall. The side wall and front wall of the first box are folded together, and the crease forms the first edge of the slotted cigarette packaging box; The side wall and rear wall of the second box are folded together, and the crease forms the second edge of the slotted cigarette packaging box. The front wall, bottom wall and rear wall are all connected by folds, and the folds form the third edge of the slotted cigarette packaging box; The first cover sidewall and the cover rear wall are folded together, and the crease forms the fourth edge of the slotted cigarette packaging box; The second cover sidewall is folded and connected to the front cover wall, and the crease forms the fifth edge of the slotted cigarette packaging box; The back wall, top wall, and front wall of the cover are all connected by folds, and the folds form the sixth edge of the slotted cigarette packaging box.

7. The molding adaptability evaluation method according to claim 1, characterized in that, In step S5, if the stiffness difference is less than zero, it is determined that the slotted paper substrate is not suitable for forming the slotted cigarette packaging box.

8. The molding adaptability evaluation method according to claim 1, characterized in that, In step S5, the larger the stiffness difference, the more suitable the slotted paper substrate is for forming the slotted cigarette packaging box.

9. The molding adaptability evaluation method according to claim 1, characterized in that, The slotted paper substrate is white cardboard, transfer paper, or composite paper.

10. The molding adaptability evaluation method according to claim 1, characterized in that, The slotted cigarette packaging box is a packaging box for holding 20 cigarettes.

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