Packing material layer-to-layer peel strength anomaly detection device

Abstract

The utility model discloses a packaging material layer-to-layer peel strength anomaly detection device, which comprises a bearing flat plate, a polishing roller and a dyeing roller, a support is arranged on the bearing flat plate, the polishing roller and the dyeing roller are rotatably mounted on the support, gaps exist between the polishing roller and the bearing flat plate, and gaps exist between the dyeing roller and the bearing flat plate. The length of the polishing roller is smaller than that of the dyeing roller, the roller surface of the polishing roller is a hard roller surface, the roller surface of the dyeing roller is a soft roller surface, dyeing liquid is adsorbed on the dyeing roller, and the polishing roller and the dyeing roller are located on the same side of the bearing flat plate. The detection device has the following beneficial effects that whether surface peeling occurs can be judged by observing whether chromatic aberration occurs in a polished area and a non-polished area, the operation is simple and convenient, the structure is simpler than that of an infrared spectrometer, the cost is lower, and the daily maintenance cost is lower.

Description

Technical Field

[0001] The utility model relates to the field of packaging material detection, in particular to a device for detecting abnormal peeling strength between packaging material layers. Background Art

[0002] Peel strength has always been an important indicator to determine whether the physical properties of finished flexible packaging products are qualified. Figure 1 The commonly used composite film shown in the figure is a nylon film layer on the left, the adhesive layer (specifically, a cooking-grade polyurethane adhesive) in the middle, and the chlorinated polyethylene film (c) on the right. When this composite film is peeled off, if no peeling phenomenon occurs, as shown in the attached figure, Figure 2 If peeling occurs, Figure 3 As shown, attached Figure 3 It can be simply seen that part of the nylon is pulled onto the adhesive layer ( Figure 3 The situation in the figure is abnormal peel strength). For the problem of peeling of such soft packaging, it is generally determined by sampling and taking infrared spectra to determine whether there is peeling on both sides of the delamination area. Taking infrared spectra requires the use of an infrared spectrometer, which is expensive to purchase, requires high operating skills of the operator, and has high daily maintenance costs. Utility Model Content

[0003] In view of the above problems, the utility model proposes a device for detecting abnormal peeling strength between packaging material layers, which is used to replace the infrared spectrometer to detect and observe whether the peeling phenomenon occurs in an intuitive way.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A device for detecting abnormal peel strength between packaging material layers, comprising a supporting plate, a grinding roller and a dyeing roller, wherein a bracket is provided on the supporting plate, and the grinding roller and the dyeing roller are rotatably mounted on the bracket, and there is a gap between the grinding roller and the dyeing roller and the supporting plate, the length of the grinding roller is smaller than the length of the dyeing roller, the roller surface of the grinding roller is a hard roller surface, the roller surface of the dyeing roller is a soft roller surface, the dyeing roller is adsorbed with dyeing liquid, and the grinding roller and the dyeing roller are located on the same side of the supporting plate.

[0006] Specifically, the dyeing liquid used in this dyeing roller is made of methyl violet and acetone in a certain proportion. This dyeing liquid can react with the polyurethane adhesive, but does not react with nylon.

[0007] The working process of this device is as follows: first, Figure 3The diaphragm on the right side shown in the figure is laid on the supporting plate, and the chlorinated polyethylene film is tightly and flush with the supporting plate. The diaphragm is manually or with the help of external force to pass through the gap between the diaphragm and the grinding roller and the supporting plate, and the gap between the dyeing roller and the supporting plate in turn. The grinding roller will form a grinding area on the diaphragm, and after passing through the grinding roller, a grinding area and a non-grinding area will be formed on the diaphragm, and the dyeing liquid will be smeared on the grinding area and the non-grinding area by the dyeing roller. If there is no color difference between the grinding area and the non-grinding area (indicating that the adhesive layer is not attached to nylon), it means that there is no surface peeling. If there is a color difference between the grinding area and the non-grinding area (the grinding area is dark purple and the ungrinding area is light purple), it means that nylon is attached to the adhesive layer, because the nylon thickness in the grinding area will be lighter due to grinding, and the nylon thickness in the non-grinding area will be darker. Nylon will hinder the reaction of the dyeing liquid and the adhesive, so the greater the color difference.

[0008] Therefore, this device can determine whether surface peeling occurs by observing whether there is color difference between the polished area and the non-polished area. It is simple and convenient to operate, has a simpler structure than the infrared spectrometer, has lower cost, and has lower daily maintenance cost.

[0009] It should be noted that this device can only roughly evaluate the degree of membrane peeling, and accurate detection still requires the use of an infrared spectrometer.

[0010] Optionally, it also includes guide rollers, which include no less than two guide rollers, which are rotatably mounted on one side of the supporting plate through a bracket, and the grinding roller and the dyeing roller are located between the two guide rollers, and the length of the guide roller is greater than the length of the grinding roller and the dyeing roller.

[0011] The function of the guide roller is to guide and clamp the transported diaphragm.

[0012] Optionally, it also includes a motor, which is arranged on the supporting plate, and the shaft of the motor is matched with the guide roller.

[0013] There are two specific guide rollers, namely the first guide roller and the second guide roller. The first guide roller and the second guide roller are independently rotatably mounted on the bracket. The shaft of the motor is matched with either the first guide roller or the second guide roller, or the motor is matched with both the first guide roller and the second guide roller.

[0014] Optionally, an auxiliary shaft is also included. The dyeing roller and the grinding roller are both connected to the auxiliary shaft, and the auxiliary shaft is rotatably matched with the bracket.

[0015] The specific dyeing roller and the grinding roller are both installed on the bracket through the auxiliary shaft.

[0016] Optionally, it also includes an electric heating pipe, which is arranged on one side of the supporting plate through a suspension rod, and the electric heating pipe and the grinding roller are respectively located on both sides of the supporting plate, and the electric heating pipe does not contact the supporting plate.

[0017] The purpose of using the suspension rod to suspend the electric heating pipe is to use the electric heating pipe to heat the air around the supporting plate, so that the dyed membrane can be dried with hot air to prevent the dye on the membrane from contaminating the second guide roller.

[0018] Optionally, a plurality of parallel and non-contact through holes are provided on the supporting plate, and the through holes are located between the guide roller and the dyeing roller, and the through holes are parallel to the suspension rod.

[0019] Since the electric heating tube is located below the supporting plate, and the diaphragm is located below the supporting plate, the existence of the passage allows the hot air below to overflow directly, thereby quickly drying the diaphragm.

[0020] Optionally, a patch type temperature sensor is also included, wherein the patch type temperature sensor is arranged on the supporting plate, and the patch type temperature sensor and the dyeing roller are respectively located on both sides of the supporting plate.

[0021] The function of the patch temperature sensor is to monitor the temperature of the supporting plate to prevent the temperature of the supporting plate from being too high.

[0022] Optionally, the suspension rod is perpendicular to the supporting plate.

[0023] The beneficial effects of the utility model are: whether surface peeling occurs can be judged by observing whether color difference occurs between the polished area and the non-polished area; the operation is simple and convenient; the structure is simpler than that of the infrared spectrometer; the cost is lower; and the daily maintenance cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the composite membrane;

[0025] Figure 2 It is a schematic diagram when no surface peeling occurs after the composite film is peeled off;

[0026] Figure 3 It is a schematic diagram of surface peeling after the composite film is peeled off;

[0027] Figure 4 This is a schematic diagram showing the working principle of the device for detecting abnormal peel strength between packaging material layers;

[0028] Figure 5 It is a schematic diagram showing the working process of the device for detecting abnormal peeling strength between packaging material layers;

[0029] Figure 6 This is a schematic diagram showing the positions of the polished area and the non-polished area on the diaphragm.

[0030] The reference numerals in the figure are: 1. bracket; 2. first guide roller; 3. grinding roller; 4. dyeing roller; 5. second guide roller; 6. supporting plate; 601. through hole; 7. suspension rod; 8. electric heating tube; 9. chip temperature sensor; 10. auxiliary shaft; 11. diaphragm; 1101. grinding area; 1102. ungrinded area; 12. motor. DETAILED DESCRIPTION

[0031] The utility model is described in detail below in conjunction with the accompanying drawings.

[0032] As attached Figure 4 , Attachment Figure 5 And attached Figure 6 As shown, a device for detecting abnormal peeling strength between packaging material layers includes a supporting plate 6, a grinding roller 3 and a dyeing roller 4. A bracket 1 is provided on the supporting plate 6. The grinding roller 3 and the dyeing roller 4 are rotatably installed on the bracket 1. There are gaps between the grinding roller 3 and the dyeing roller 4 and the supporting plate 6. The length of the grinding roller 3 is smaller than the length of the dyeing roller 4. The roller surface of the grinding roller 3 is a hard roller surface, and the roller surface of the dyeing roller 4 is a soft roller surface. The dyeing roller 4 is adsorbed with dyeing liquid, and the grinding roller 3 and the dyeing roller 4 are located on the same side of the supporting plate 6.

[0033] Specifically, the dyeing liquid used in the dyeing roller 4 is made of methyl violet and acetone in a certain proportion. The dyeing liquid can react with the polyurethane adhesive, but does not react with nylon.

[0034] The working process of this device is as follows: first, Figure 3 The right side diaphragm 11 shown in the figure is laid on the supporting plate, and the chlorinated polyethylene film is closely flushed with the supporting plate. The diaphragm 11 is manually or with the help of external force to pass through the gap between the diaphragm 11 and the grinding roller 3 and the supporting plate, and the gap between the dyeing roller 4 and the supporting plate in turn. The grinding roller 3 will form a grinding area 1101 on the diaphragm 11. After passing through the grinding roller 3, a grinding area 1101 and a non-grinding area 1101 will be formed on the diaphragm 11, and the dyeing liquid will be smeared on the grinding area 1101 and the non-grinding area 1101 by the dyeing roller 4. If If there is no color difference between the polished area 1101 and the non-polished area 1101 (indicating that there is no nylon attached to the adhesive layer), it means that there is no surface peeling. If there is a color difference between the polished area 1101 and the non-polished area 1101 (the polished area 1101 is dark purple and the non-polished area 1101 is light purple), it means that there is nylon attached to the adhesive layer. Because the thickness of the nylon in the polished area 1101 will be lighter due to polishing, and the thickness of the nylon in the non-polished area 1101 will be darker, nylon will hinder the reaction of the dyeing solution and the adhesive, so the color difference is greater.

[0035] Therefore, this device can determine whether surface peeling occurs by observing whether there is color difference between the polished area 1101 and the non-polished area 1101. The operation is simple and convenient, the structure is simpler than that of the infrared spectrometer, the cost is lower, and the daily maintenance cost is lower.

[0036] It should be noted that the present device can only roughly assess the extent of the peeling of the membrane 11, and accurate detection still requires the aid of an infrared spectrometer.

[0037] As attached Figure 4 , Attachment Figure 5 And attached Figure 6 As shown, it also includes guide rollers, there are no less than two guide rollers, the guide rollers are rotatably installed on one side of the supporting plate 6 through the bracket 1, and the grinding roller 3 and the dyeing roller 4 are located between the two guide rollers, and the length of the guide rollers is greater than the length of the grinding roller 3 and the dyeing roller 4.

[0038] The function of the guide roller is to guide and clamp the film 11 being transported.

[0039] As attached Figure 4 , Attachment Figure 5 And attached Figure 6 As shown, it also includes a motor 12, which is arranged on the supporting plate 6, and the shaft of the motor 12 is matched with the guide roller.

[0040] There are two specific guide rollers, namely the first guide roller 2 and the second guide roller 5. The first guide roller 2 and the second guide roller 5 are independently rotatably installed on the bracket 1. The shaft of the motor 12 is matched with either the first guide roller 2 or the second guide roller 5, or the motor 12 is matched with both the first guide roller 2 and the second guide roller 5.

[0041] As attached Figure 4 , Attachment Figure 5 And attached Figure 6 As shown, an auxiliary shaft 10 is also included. The dyeing roller 4 and the grinding roller 3 are both connected with the auxiliary shaft 10, and the auxiliary shaft 10 is rotatably matched with the bracket 1.

[0042] Specifically, the dyeing roller 4 and the grinding roller 3 are both mounted on the bracket 1 through the auxiliary shaft 10 .

[0043] As attached Figure 4 , Attachment Figure 5 And attached Figure 6 As shown, it also includes an electric heating pipe 8, which is arranged on one side of the supporting plate 6 through a suspension rod 7, and the electric heating pipe 8 and the grinding roller 3 are respectively located on both sides of the supporting plate 6, and the electric heating pipe 8 does not contact the supporting plate 6.

[0044] The purpose of using the suspension rod 7 to suspend the electric heating tube 8 is to use the electric heating tube 8 to heat the air around the supporting plate 6, so that the dyed membrane 11 can be dried with hot air to prevent the dye on the membrane 11 from contaminating the second guide roller 5.

[0045] As attached Figure 4 , Attachment Figure 5 And attached Figure 6 As shown, a plurality of parallel and non-contact through holes 601 are provided on the supporting plate 6 , and the through holes 601 are located between the guide roller and the dyeing roller 4 , and the through holes 601 are parallel to the suspension rod 7 .

[0046] Since the electric heating tube 8 is located below the supporting plate 6 , and the diaphragm 11 is located below the supporting plate 6 , the presence of the passage allows the hot air below to directly overflow, thereby quickly drying the diaphragm 11 .

[0047] As attached Figure 4 , Attachment Figure 5 And attached Figure 6 As shown, it also includes a patch temperature sensor 9, which is arranged on the supporting plate 6, and the patch temperature sensor 9 and the dyeing roller 4 are respectively located on both sides of the supporting plate 6.

[0048] The function of the patch temperature sensor 9 is to monitor the temperature of the supporting plate 6 to prevent the temperature of the supporting plate 6 from being too high.

[0049] As attached Figure 4 , Attachment Figure 5 And attached Figure 6 As shown, the suspension rod 7 is perpendicular to the supporting plate 6.

[0050] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. A device for detecting abnormal peel strength between packaging material layers, characterized in that: It includes a supporting plate, a grinding roller and a dyeing roller. A bracket is provided on the supporting plate. The grinding roller and the dyeing roller are rotatably installed on the bracket. There is a gap between the grinding roller and the dyeing roller and the supporting plate. The length of the grinding roller is smaller than the length of the dyeing roller. The roller surface of the grinding roller is a hard roller surface, and the roller surface of the dyeing roller is a soft roller surface. Dyeing liquid is adsorbed on the dyeing roller. The grinding roller and the dyeing roller are located on the same side of the supporting plate.

2. The device for detecting abnormal peel strength between packaging material layers according to claim 1, characterized in that: It also includes guide rollers, which are no less than two in number. The guide rollers are rotatably installed on one side of the supporting plate through brackets, and the grinding roller and the dyeing roller are located between the two guide rollers, and the length of the guide roller is greater than the length of the grinding roller and the dyeing roller.

3. The device for detecting abnormal peel strength between packaging material layers according to claim 2, characterized in that: It also includes a motor, which is arranged on the supporting plate, and the shaft of the motor is matched with the guide roller.

4. The device for detecting abnormal peel strength between packaging material layers according to claim 1, characterized in that: It also includes an auxiliary shaft, the dyeing roller and the grinding roller are both connected with the auxiliary shaft, and the auxiliary shaft is rotatably matched with the bracket.

5. The device for detecting abnormal peel strength between packaging material layers according to claim 1, characterized in that: It also includes an electric heating pipe, which is arranged on one side of the supporting plate through a suspension rod, and the electric heating pipe and the grinding roller are respectively located on both sides of the supporting plate, and the electric heating pipe does not contact the supporting plate.

6. The device for detecting abnormal peel strength between packaging material layers according to claim 5, characterized in that: The supporting plate is provided with a plurality of parallel and non-contact through holes, and the through holes are located between the guide roller and the dyeing roller, and the through holes are parallel to the suspension rod.

7. The device for detecting abnormal peel strength between packaging material layers according to claim 5, characterized in that: It also includes a patch type temperature sensor, which is arranged on the supporting plate, and the patch type temperature sensor and the dyeing roller are respectively located on both sides of the supporting plate.

8. The device for detecting abnormal peel strength between packaging material layers according to claim 5, characterized in that: The suspension rod is perpendicular to the supporting plate.

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