Adhesive tape box sealing reliability detection mechanism and use method thereof

Abstract

The invention discloses an adhesive tape box sealing reliability detection mechanism and a use method thereof, belongs to the technical field of box sealing adhesive tapes, and provides a testing mechanism and method which are more accurate and scientific in testing. The detection mechanism comprises a fixed outer frame, a movable detection inner frame, a touch switch, a timing display device and a main control device. According to the invention, the actual box sealing requirements are simulated, different box sealing limit grades (relative expansion grades) can be selected, the test result can be accurate to minute and second, and the box sealing firmness of the box sealing adhesive tape can be accurately quantified and scientifically reflected.

Description

Technical Field

[0001] The invention belongs to the technical field of sealing tapes and relates to a tape sealing reliability detection mechanism and a use method thereof. Background Art

[0002] Although there are corresponding testing methods and standards for various physical properties of tape, such as initial tack, peel strength, and sustained tack, these methods have certain limitations and cannot fully reflect the actual sealing performance of the tape. In actual packaging and sealing operations, to prevent the goods inside from shaking, cartons are often designed or filled to be relatively full, which creates a certain outward expansion force after sealing. The general testing method used is a simulated sealing method, relying on random observation of the tape seal popping open. However, the tape seal popping open is a slow process, and the precise time of popping open is difficult to accurately observe. Therefore, traditional testing methods cannot provide accurate test results and waste labor time. Summary of the Invention

[0003] In order to solve the above-mentioned problems, the present invention provides a tape sealing reliability detection mechanism and a testing method thereof.

[0004] The present invention provides a tape sealing reliability detection mechanism, the detection mechanism comprising:

[0005] 1) A fixed outer frame, wherein the front and rear sides of the fixed outer frame are respectively provided with length-adjustable baffles for clamping and fixing the sealed box to be tested;

[0006] Furthermore, the fixed outer frame is a cuboid or cube composed of twelve support rods, and a load-bearing tray is provided at the bottom of the outer frame bracket to facilitate placement of the test cartons; the support rods can be round or square aluminum alloy pipes.

[0007] 2) Activity detection inner frame, the activity detection inner frame is provided in the fixed outer frame and is adjustable in size;

[0008] Furthermore, the movable detection inner frame includes a first and second sliding rods movably mounted on support rods opposite the upper surface of the fixed outer frame and capable of sliding along the support rods; a third and fourth sliding rods disposed on the lower surface of the fixed outer frame and corresponding to the first and second sliding rods; a fifth and sixth sliding rods disposed between the first and third sliding rods and capable of sliding along the pair of sliding rods; and a seventh and eighth sliding rods disposed between the second and fourth sliding rods. The movable detection inner frame can be adjusted in size to match the size of the sealed box to be tested by adjusting the distance between the sliding rods. The first, second, third, and fourth sliding rods can slide left and right to adjust the width of the movable detection inner frame, and the fifth, sixth, seventh, and eighth sliding rods can slide back and forth to adjust the length of the movable detection inner frame.

[0009] Furthermore, a fixing bolt matching each slide bar is provided for fixing the slide bar after adjusting the size of the inner frame.

[0010] 3) Touch switch: The movable detection inner frame is provided with a touch switch (touch / normally closed type) for detecting whether the test carton is opened;

[0011] Furthermore, there are four touch switches, which are respectively arranged on the fifth slide bar, the sixth slide bar, the seventh slide bar and the eighth slide bar. The positions of the touch switches can be set according to actual conditions.

[0012] 4) Timing display device: The timing display device is provided outside the fixed outer frame;

[0013] 5) Main controller: The main controller is electrically connected to the timing display device and the touch switch. The main controller receives the signal from the touch switch and performs timing. The timing display device is used to receive the indication from the main controller and display the time.

[0014] During the test, the carton is placed in the reliability test box and fixed. The main controller starts timing. When the seal of the carton to be tested pops open, it touches the touch switch, which sends a stop timing signal to the main controller to stop the timing. The timing display device displays the timing time in real time.

[0015] During the test, the entire device is placed in a specified temperature and humidity environment, and compressible sponge blocks are filled inside the carton to form an outward expansion force; the sealed carton is placed on the movable detection inner frame, the size of the movable detection inner frame is adjusted to match the size of the carton, the baffle is adjusted to fix the carton, and the test begins.

[0016] The present invention also provides a method for detecting the reliability of tape sealing, which comprises the following steps:

[0017] First: Use new folding double-corrugated paper cartons that comply with GB / T 6543-2008 standards, with the sum of length, width, and height between 1000 and 1400 mm. Used cartons cannot be reused. If recycled paper cartons are used, this should be indicated in the test report.

[0018] Second: Conditioning: Place the adhesive tape and carton at a temperature of (23±2)°C and a relative humidity of (50±10)% for more than 24 hours.

[0019] Third: Seal the bottom of the carton: Cut a sample of appropriate length from the adhesive tape to be tested, seal the bottom of the carton with a "straight" seal, leaving an appropriate length (5cm) of tape on both sides of the carton, and press the carton tightly to seal without leaving any gaps. Use a manual roller to roll back and forth once at a speed of 50mm / s to compact the tape (samples of pressure-sensitive adhesives must be rolled within 60s, and samples of water-based adhesives must be rolled within 5s).

[0020] Specimen cutter: Fix two single-edged blades in parallel planes and maintain a precise distance to form a specimen cutter with accurate specimen width. The recommended cutting width of the cutter is 48.0 or 50.0 mm. Alternatively, use other cutters that will not damage the edges. The accuracy of the distance between the blades is nominal width ± 0.1 mm.

[0021] The manual pressure roller should be a cylindrical steel with a mass of (2000±100)g, a diameter of (85.0±2.5)mm, a width of (45.0±1.5)mm, and a surface covered with rubber with a thickness of (6.0±1.0)mm and a Shore hardness of (80±5)HA.

[0022] Fourth: Put sponge blocks into the carton. The length of the sponge should be 85% to 88% of the empty space length in the carton (accurate to the integer of cm), the width of the sponge should be 60±2mm, and the height of the sponge should be the empty space height in the carton plus 35±2mm. Then seal the carton. The purpose of increasing the height is to form an outward expansion force.

[0023] ① According to the test needs, you can choose sponge blocks of different densities to set different levels of outward expansion force, as shown in the following table:

[0024]

[0025]

[0026] ② According to the test needs, you can choose sponge blocks of different heights to set different levels of outward expansion force, as shown in the following table:

[0027]

[0028] Fifth: Seal the upper part of the carton: Cover the upper part of the carton and use a straight seal. Leave an appropriate length (5cm) of tape on both sides of the carton, press the carton tightly to seal without leaving any gaps, and use a manual roller to roll back and forth once to compact the tape (samples with pressure-sensitive adhesives are required to be rolled within 60 seconds, and samples with water-based adhesives are required to be rolled within 5 seconds).

[0029] The manual pressure roller should be a cylindrical steel with a mass of (2000±100)g, a diameter of (85.0±2.5)mm, a width of (45.0±1.5)mm, and a surface covered with rubber with a thickness of (6.0±1.0)mm and a Shore hardness of (80±5)HA.

[0030] Sixth: Place the carton in the testing mechanism. Adjust the slide bar on the movable detection inner frame to accommodate the size of the carton being tested. Within 10 minutes, place the sealed carton in the test chamber. Place the test specimen on its side in the specified test environment. Adjust the touch switches on the chamber so they are located at both ends of the carton seal. Adjust the slide bar to ensure the gap between the touch plate and the carton is within a 0-1mm range. Once these adjustments are complete, press the timer button to automatically begin timing. If the carton seal pops open, triggering the touch plate of the touch switch, the timer automatically stops, and the timer's running light stops flashing.

[0031] Table-1 Test environment parameter requirements

[0032]

[0033] The present invention simulates actual sealing requirements and can select different sealing limit levels (relative expansion levels). The test results can be accurate to minutes and seconds, can be accurately quantified, and scientifically reflect the sealing firmness of the sealing tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the detection mechanism of the present invention;

[0035] Figure 2 It is a detection schematic diagram of the detection mechanism of the present invention. DETAILED DESCRIPTION

[0036] The present invention will be further explained and illustrated below in conjunction with the accompanying drawings.

[0037] Example 1

[0038] The reliability testing mechanism of the tape sealing provided by the present invention can be found in Figure 1 , the detection mechanism includes:

[0039] 1) A fixed outer frame 1, wherein the front and rear sides of the fixed outer frame are provided with adjustable length baffles for clamping and fixing the sealed box to be tested, namely a front baffle 11 and a rear baffle 12;

[0040] Furthermore, the fixed outer frame 1 is a cuboid or cube composed of twelve support rods, and a load-bearing tray is provided at the bottom of the outer frame bracket to facilitate placement of the test cartons; the support rods can be round or square aluminum alloy pipes.

[0041] 2) Activity detection inner frame 2, the activity detection inner frame 2 is provided in the fixed outer frame 1, the size is adjustable;

[0042] Furthermore, the movable detection inner frame 2 includes first and second slide bars 21, 22, which are movably mounted on support bars opposite the upper surface of the fixed outer frame and can slide along the support bars; third and fourth slide bars 23, 24, which are disposed on the lower surface of the fixed outer frame 1 and correspond to the first and second slide bars 21, 22; fifth and sixth slide bars 25, 26, which are disposed between the first and third slide bars 21, 23 and can slide along the pair of slide bars; and seventh and eighth slide bars 27, 28, which are disposed between the second and fourth slide bars 22, 24. The movable detection inner frame 2 can be adjusted in size by adjusting the distance between the slide bars to match the size of the sealed box being tested. The first, second, third, and fourth slide bars 21, 22, 23, and 24 slide left and right to adjust the width of the movable detection inner frame, while the fifth, sixth, seventh, and eighth slide bars 25, 26, 27, and eighth slide bars 28 slide forward and backward to adjust the length of the movable detection inner frame.

[0043] Furthermore, a fixing bolt 29 is provided which matches each slide bar and is used to fix the slide bar after adjusting the size of the inner frame.

[0044] 3) Touch switch 3: The activity detection inner frame is provided with a touch switch (touch / normally closed type) for detecting whether the test carton is opened;

[0045] Furthermore, there are four touch switches 3, which are respectively arranged on the fifth slide bar, the sixth slide bar, the seventh slide bar and the eighth slide bar, and their positions can be set according to actual conditions.

[0046] 4) Timing display device 4: The timing display device 4 is provided outside the fixed outer frame;

[0047] 5) Main controller: The main controller is electrically connected to the timing display device 4 and the touch switch. During testing, the carton 01 is placed in the reliability test box and fixed. The main controller starts timing. When the seal of the carton to be tested pops open, it touches the touch switch, which sends a stop timing signal to the main controller, stopping the timing. The timing display device displays the timing time in real time.

[0048] Example 2

[0049] The present invention also provides a method for testing a reliability detection mechanism for sealing a box using adhesive tape, the method comprising the following steps:

[0050] 1. Test Preparation

[0051] 1) Take a roll of transparent BOPP pressure-sensitive adhesive tape, 48mm wide, 50m long, and 50um thick;

[0052] 2) Take 3 double-walled corrugated cartons with the dimensions of 500*400*400mm in length*width*height.

[0053] 3) Take three pieces of 40D sponge, length * width * height = 430 * 60 * 433 mm (relative expansion force level: level 2);

[0054] 4) Two testing institutions, numbered: Test Chamber No. 1 and Test Chamber No. 2;

[0055] 2. Environmental Adaptation

[0056] Place the tape and carton in a room with a temperature of 23±2℃ and a humidity of 50%±10 for 24 hours to acclimate.

[0057] 3. Preparation of carton samples

[0058] 1) Pull open the tape and remove the outermost 5 layers. Seal the bottom of the carton in an "I" shape with tape, leaving 5 cm of tape on each side of the carton. Then use a manual roller to roll back and forth once at a speed of 50 mm / s to compact the tape.

[0059] 2) Place a sponge in the center of carton 01, cover the top of carton 01, flatten the carton, and seal it tightly. Use tape to seal the top of the carton in an "I" shape, leaving 5 cm of tape on each side of the carton. Use a manual roller to roll the tape back and forth once at a speed of 50 mm / s to compact the tape.

[0060] 3) Prepare three samples according to the above process and requirements and mark them: Sample 1, Sample 2 and Sample 3.

[0061] 4. Entering the trial

[0062] 1) The reliability test chamber is placed in a room with a normal temperature of 23±2℃ and a humidity of 50%±10, and the timer is reset;

[0063] 2) Immediately place the sealed carton samples 1 and 2 into test box No. 1 and test box No. 2 respectively, and place them on their side. Adjust the front baffle 11 and the rear baffle 12 to fix the cartons, adjust the inner frame slide to the appropriate position, and adjust the touch switch 3 so that the touch plate is close to the two ends of the carton seal. After the adjustment is completed, start the timer and the running light flashes.

[0064] 3) Place the sealed sample 3 in a room with a temperature of 23±2°C and a humidity of 50%±10°C, stand it on its side (without any objects touching it), and press the timer to start timing.

[0065] 5. Test results

[0066] 1) After 48 hours, check the timing results of Sample 1 and Sample 2 by the testing agency.

[0067] 2) Sample 3 was observed manually every 4 hours using the traditional method. It was observed that it did not pop open in the 7th 4 hours, but popped open in the 8th 4 hours.

[0068] The timing results are as follows:

[0069]

Claims

1. A tape sealing reliability detection mechanism, characterized in that: The detection mechanism includes: A fixed outer frame, wherein the fixed outer frame is provided with baffles with adjustable lengths at the front and back for clamping and fixing the sealed box to be tested; An adjustable activity detection inner frame within a fixed outer frame; A touch switch provided in the movable detection inner frame for detecting the opening and closing status of the test carton; Timing display device: The timing display device is arranged outside the fixed outer frame; Main controller: The main controller is electrically connected to the timing display device and the touch switch. The main controller receives the signal from the touch switch and counts time. The timing display device is used to receive the indication from the main controller and display the time.

2. The tape sealing reliability detection mechanism according to claim 1, characterized in that: The fixed outer frame is a cuboid or a cube composed of twelve support rods, and a bearing support plate is provided at the bottom of the cuboid or the cube.

3. The tape sealing reliability detection mechanism according to claim 1, characterized in that: The activity detection inner frame includes a first slide bar and a second slide bar movably mounted on a support bar opposite to the upper surface of the fixed outer frame and capable of sliding along the support bar, a third slide bar and a fourth slide bar arranged on the lower surface of the fixed outer frame and corresponding to the first slide bar and the second slide bar, a fifth slide bar and a sixth slide bar arranged between the first slide bar and the third slide bar and capable of sliding along the pair of slide bars, and a seventh slide bar and an eighth slide bar arranged between the second slide bar and the fourth slide bar.

4. The tape sealing reliability detection mechanism according to claim 3, characterized in that: The first slide bar, the second slide bar, the third slide bar, the fourth slide bar, the fifth slide bar, the sixth slide bar, the seventh slide bar and the eighth slide bar are provided with fixing bolts matched with each slide bar.

5. The tape sealing reliability detection mechanism according to claim 3, characterized in that: Furthermore, there are four touch switches, which are respectively arranged on the fifth slide bar, the sixth slide bar, the seventh slide bar and the eighth slide bar.

6. The method for using the tape sealing reliability detection mechanism according to claim 1, wherein: The method of use comprises the following steps: First: Select a new carton to be tested; Second: Conditioning: Place the adhesive tape and carton at 23±2℃ and relative humidity 50±10% for more than 24 hours; Third: Seal the bottom of the carton: Use a "one-line" seal to seal the bottom of the carton, leaving appropriate lengths of tape on both sides of the carton, and press the carton tightly to seal without leaving any gaps; Fourth: Put sponge blocks into the carton. The length of the sponge should be 85% to 88% of the empty space in the carton. The width of the sponge should be 60±2mm. The height of the sponge should be the empty space height in the carton plus 35±2mm. Then seal the carton. The purpose of increasing the height is to form an outward expansion force. Fifth: Seal the top of the carton: Cover the top of the carton and seal it with a straight line. Leave the tape on both sides of the carton at the same length as the bottom of the carton, and press the carton tightly to seal it without leaving any gaps. Sixth: Place the sealed carton sideways into the detection mechanism, adjust the slide bar of the movable detection inner frame to adapt to the size of the carton to be tested, place the test box in the specified test environment, adjust the position of the touch switch so that the touch switch is located at both ends of the carton seal, and adjust the slide bar so that the gap between the touch plate and the carton is in the range of 0-1mm. After the adjustment is completed, start the timing button and the timing starts until the carton seal pops open, triggering the touch plate of the touch switch and stopping the timing.

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