Laser die-cutting device for self-adhesive packaging materials

Abstract

The present invention belongs to the technical field of laser die-cutting, and specifically is a laser die-cutting device for self-adhesive packaging materials, comprising a bottom plate, a box body is installed on the bottom plate, an entrance is provided on the box body, an elastic plate is installed at the entrance, a laser head and an air pipe are installed in the box body; a sliding groove is provided on the inner wall of the box body, a pressing plate is installed in the box body, a slider is installed on the pressing plate, the slider is installed in the sliding groove, and a spring is connected between the slider and the sliding groove; the pressing plate is pressed on the material strip passing through the box body, a cavity is provided inside the pressing plate, and a cooling pipe is installed on the pressing plate; the present invention has a simple structure, can die-cut the material strip under the protection of an inert atmosphere, and can flatten and cool the material strip by using the pressing plate and a contact plate, so as to avoid the adverse effects of high temperature during die-cutting and make the material strip cool quickly, so as to facilitate the winding of the material strip.

Description

Technical Field

[0001] The invention belongs to the technical field of laser die-cutting, in particular to a laser die-cutting device for self-adhesive packaging materials. Background Art

[0002] Self-adhesive packaging materials are also called self-adhesive label materials. They are made of paper, film or other special materials as the surface, with adhesive coated on the back and glassine backing paper as the base paper. After printing, die-cutting and other processing, they become finished self-adhesive packaging materials. They have the advantages of no need to brush glue, no need to use paste, no need to dip in water, no pollution, and saving labeling time. They have a wide range of applications and are convenient and fast.

[0003] Laser die-cutting is a process that uses a high-energy, high-density laser beam to move quickly according to a designed pattern, instantly heating the die-cut material to the vaporization temperature, thereby obtaining continuous or intermittent slits and indentations. However, when using laser to die-cut self-adhesive packaging materials, the laser cutting material generates high temperature and reacts with oxygen in the air, which will increase the temperature of the material's die-cutting slit. The high temperature causes a violent reaction and cannot ensure a smooth cross-section. At the same time, the high temperature will cause the printing ink on the self-adhesive packaging material to be burned and discolored, which will cause irregular die-cutting slits of film materials and widen the slit width. The vaporized residue adheres to the die-cutting edge, which will cause the slit edge of paper materials to oxidize and turn yellow, the slit width to widen, and there will be a lot of smoke. In addition, the oxidation reaction increases the heat-affected zone, making the cutting quality relatively poor. Summary of the invention

[0004] In order to make up for the shortcomings of the prior art, the material strip is die-cut under the protection of an inert atmosphere, and the material strip is flattened and cooled using a pressing plate and a contact plate to avoid the adverse effects of high temperature during die-cutting and to quickly cool the material strip for easy winding of the material strip. The present invention proposes a laser die-cutting device for self-adhesive packaging materials.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: the laser die-cutting device for self-adhesive packaging materials of the present invention comprises a bottom plate, a box body is installed on the bottom plate, entrances are opened on both sides of the box body, elastic plates are installed at the entrances, a laser head is installed in the box body, and an air pipe is installed on the box body;

[0006] A sliding groove is provided on the inner wall of the box body, a pressing plate is installed in the box body, sliders are installed at both ends of the pressing plate, the sliders are slidably installed in the sliding groove, and a spring is connected between the upper surface of the slider and the top surface of the sliding groove;

[0007] The pressing plate is pressed onto the material strip passing through the box body, a cavity is opened inside the pressing plate, a cooling pipe is installed on the pressing plate, and the cooling pipe delivers external cooling liquid into the cavity.

[0008] Preferably, the pressing plates are symmetrically arranged in the box, and the cutting area of ​​the material strip by the laser head is located between the two pressing plates.

[0009] Preferably, a raised platform is installed on the bottom plate, a guide roller is installed in the box body, and the material belt passes through the surface of the raised platform under the action of the guide roller;

[0010] The pressure plate is located above the raised platform, and the pressure in the box body is in a slightly positive pressure state.

[0011] Preferably, a contact plate is installed on the raised platform, the surface of the contact plate is flush with the surface of the raised platform, the contact plate is a heat spreader, both ends of the contact plate are located below the pressure plate, and the raised platform is made of a material with relatively low thermal conductivity.

[0012] Preferably, a fluff brush is installed on the surface of the elastic plate, and the fluff brush is provided in multiple groups, and the fluff brush is in contact with the surface of the material belt.

[0013] Preferably, the velvet brush is made of polytetrafluoroethylene material and is anti-statically treated.

[0014] Preferably, a protective film is attached to the surface of the contact plate.

[0015] Preferably, guide tapes are symmetrically attached to the lower surface of the pressing plate, the material tape passes through between the guide tapes, the thickness of the guide tapes is greater than or equal to the thickness of the material tape, and the guide tapes are Teflon tapes.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The laser die-cutting device for self-adhesive packaging materials described in the present invention, by setting a box body, a pressure plate and a contact plate, allows the material strip to be die-cut in an inert atmosphere, and the material strip is flattened by the pressure plate to avoid jittering when the material strip moves too fast, affecting the accuracy of the die-cutting position. At the same time, when the coolant is passed, the temperature of the pressure plate and the contact plate is relatively low, so that the surface temperature of the material strip before die-cutting is low and the material strip is quickly cooled during die-cutting, so that the temperature of the material strip is low during die-cutting, the heat can be quickly dissipated, and the cooling effect is good, thereby ensuring that the die-cutting effect and cutting quality of the material strip are relatively good.

[0018] 2. The laser die-cutting device for self-adhesive packaging materials described in the present invention makes the space in the box relatively sealed by arranging a raised platform, an air pipe, an inlet, an elastic plate and a velvet brush, and the inert gas in the box moves from top to bottom, and the concentration of the nitrogen inert gas gradually decreases from top to bottom. At the same time, since the die-cutting position of the material strip in the box is relatively high, the die-cutting position is ensured to be at a position in the box where the concentration of the inert gas is relatively high, thereby improving the protection effect of the die-cutting process of the material strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a front view of the die-cutting device of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the die-cutting device of the present invention;

[0022] Figure 3 It is a cross-sectional schematic diagram of a raised platform, a pressing plate and a contact plate in the die-cutting device of the present invention;

[0023] Figure 4 It is a schematic structural diagram of a pressing plate in a die-cutting device of the present invention;

[0024] Figure 5 yes Figure 2 A partial enlarged view of the middle part;

[0025] In the figure: base plate 1, box body 2, guide roller 21, sliding groove 22, laser head 23, air pipe 24, raised platform 3, pressure plate 4, slider 41, spring 42, cooling tube 43, contact plate 5, elastic plate 6, fluff brush 61, material belt 7. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0027] like Figures 1 to 5 As shown, the laser die-cutting device for self-adhesive packaging materials of the present invention comprises a bottom plate 1, a box body 2 is mounted on the bottom plate 1, entrances are opened on both sides of the box body 2, elastic plates 6 are mounted at the entrances, a laser head 23 is mounted in the box body 2, and an air pipe 24 is mounted on the box body 2;

[0028] A sliding groove 22 is provided on the inner wall of the box body 2, a pressing plate 4 is installed in the box body 2, sliders 41 are installed at both ends of the pressing plate 4, the sliders 41 are slidably installed in the sliding groove 22, and a spring 42 is connected between the upper surface of the slider 41 and the top surface of the sliding groove 22;

[0029] The pressing plate 4 is pressed on the material strip 7 passing through the box body 2, and a cavity is opened inside the pressing plate 4. A cooling pipe 43 is installed on the pressing plate 4, and the cooling pipe 43 delivers external cooling liquid into the cavity;

[0030] During operation, the controller controls the external gas source so that an inert gas, such as nitrogen, is sent into the box body 2 from the gas pipe 24, so that the box body 2 is in an inert atmosphere. Then, the self-adhesive packaging material to be cut, that is, the material strip 7 is sent into the box body 2 from the entrance on one side, so that the material strip 7 is die-cut by the laser emitted by the laser head 23 in the box body 2. After the die-cutting is completed, the material strip 7 leaves the box body 2 from the entrance on the other side.

[0031] At the same time, when the material strip 7 is die-cut by the laser emitted by the laser head 23, the material strip 7 is in an inert atmosphere, isolating the air to prevent the material strip 7 from being oxidized during die-cutting, and avoiding the material strip 7 from reacting violently with oxygen at high temperature, resulting in low quality of the die-cutting seam, and making the laser die-cutting quality of the material strip 7 poor;

[0032] At the same time, the elastic plate 6 is used to contact and squeeze the material belt 7 so as to relatively close the inlet on the box body 2, thereby avoiding or reducing the escape of the inert gas filled in the box body 2 and ensuring the stability of the inert gas atmosphere in the box body 2;

[0033] At the same time, the pressing plate 4 is pressed on the surface of the material belt 7 by the spring 42, so that the material belt 7 moves stably in the box 2, and the material belt 7 is prevented from shaking due to the excessively fast movement speed, which affects the accuracy and quality of the laser die-cutting of the material belt 7. At the same time, the pressing plate 4 flattens and restricts the material belt 7, so that the material belt 7 does not need to be too tight or tensioned, thereby preventing the material belt 7 from accidentally breaking during movement when the material belt 7 moves at a fast speed and the tensioning force is large, ensuring that the material belt 7 can be continuously and stably laser-die-cut and the accuracy of the die-cutting position is ensured;

[0034] At the same time, the controller controls the external cooling equipment so that the coolant circulates in the cavity of the pressing plate 4, thereby ensuring that the temperature of the pressing plate 4 is relatively low. At this time, when the material strip 7 passes under the pressing plate 4, the temperature of the surface of the material strip 7 will be affected by the pressing plate 4 and reduced, so that the material strip 7 heats up relatively slowly during laser die-cutting and the heat-affected zone is relatively small, thereby reducing the impact of high temperature on the material strip 7 during laser die-cutting, avoiding poor cutting quality on the material strip 7 and affecting the laser die-cutting effect of the material strip 7.

[0035] As an embodiment of the present invention, the pressing plates 4 are symmetrically arranged in the box body 2, and the cutting area of ​​the material strip 7 by the laser head 23 is located between the two pressing plates 4;

[0036] By means of the symmetrically arranged pressure plates 4, the front and rear ends of the material strip 7 at the die-cutting position are flattened to ensure that the material strip 7 can pass through the die-cutting area stably and accurately, so that the die-cutting position of the material strip 7 is accurate and the die-cutting effect of the material strip 7 is improved. At the same time, since there is cooling liquid flowing in the pressure plate 4, the temperature of the pressure plate 4 is relatively low, so that the material strip 7 is quickly cooled before and after the die-cutting, so that the heat-affected area of ​​the material strip 7 is relatively small during die-cutting, and irregular cutting edges, increased cutting width, and ink on the material strip 7 are avoided from being burned and discolored. At the same time, after the die-cutting of the material strip 7, the pressure plate 4 located behind the die-cutting position will quickly cool down the contacted material strip 7, so that the material strip 7 can be cooled quickly, and the temperature of the die-cutting part of the material strip 7 is avoided to be relatively high after the laser die-cutting, which affects the subsequent waste discharge and winding of the material strip 7.

[0037] As an embodiment of the present invention, a raised platform 3 is installed on the bottom plate 1, a guide roller 21 is installed in the box body 2, and the material belt 7 passes through the surface of the raised platform 3 under the action of the guide roller 21;

[0038] The pressure plate 4 is located above the raised platform 3, and the pressure in the box body 2 is in a slightly positive pressure state;

[0039] After the material strip 7 enters the box body 2, the material strip 7 changes its moving direction under the action of the guide roller 21, so that the material strip 7 can pass through the surface of the raised platform 3. At the same time, since the surface of the raised platform 3 is much higher than the entrance on the box body 2, the part of the material strip 7 that is being die-cut is also located above the entrance.

[0040] At the same time, since the pressure in the box body 2 is in a slightly positive pressure state, and the inert gas in the box body 2 is introduced from the upper part of the box body 2, the nitrogen gas introduced into the box body 2 with a relatively small density as an inert gas will be in the upper part of the box body 2. After that, the nitrogen gas in the box body 2 will slowly move from top to bottom under the slightly positive pressure. After that, the nitrogen gas in the box body 2 will leave the box body 2 from the gap at the entrance. During this process, the nitrogen concentration in the box body 2, that is, the purity of the nitrogen gas in the box body 2, gradually decreases from top to bottom, and then the material strip 7 die-cut on the surface of the raised platform 3 will always be in a nitrogen atmosphere with a relatively high purity, thereby ensuring that the nitrogen atmosphere has a good protective effect on the die-cutting process of the material strip 7.

[0041] At the same time, since there are only inlets on both sides of the box body 2, and the inlets are located below the upper surface of the raised platform 3, when the outside air invades the box body 2 from the inlet, after the air is doped and mixed into the nitrogen atmosphere, the nitrogen with reduced concentration or purity cannot exceed the height of the raised platform 3, thereby preventing the mixed nitrogen from contacting the die-cutting part of the material strip 7 and affecting the protection effect of the die-cutting part of the material strip 7.

[0042] As an embodiment of the present invention, a contact plate 5 is installed on the raised platform 3, the surface of the contact plate 5 is flush with the surface of the raised platform 3, the contact plate 5 is a heat spreader, both ends of the contact plate 5 are located below the pressure plate 4, and the raised platform 3 is made of a material with a relatively low thermal conductivity;

[0043] Since the pressing plates 4 are arranged on the front and rear sides of the die-cutting part of the material strip 7, the material strip 7 will be closely attached to the surface of the contact plate 5. At the same time, during the laser die-cutting process of the material strip 7, the heat generated by the laser will be dissipated to the contact plate 5, thereby quickly reducing the temperature of the die-cutting part of the material strip 7, reducing the temperature of the area melted by the laser at the die-cutting part of the material strip 7 to a relatively low level, avoiding the ink on the material strip 7 from being burned and discolored by high temperature, and making the die-cutting slit width small and high quality;

[0044] At the same time, since the areas of the contact plate 5 and the pressure plate 4 are larger than the area of ​​the material strip 7, the parts of the contact plate 5 at both ends that extend beyond the material strip 7 can be sufficiently close to the pressure plate 4, thereby transferring the heat on the contact plate 5 to the pressure plate 4, ensuring that the temperature of the contact plate 5 is relatively low.

[0045] As an embodiment of the present invention, a fluff brush 61 is installed on the surface of the elastic plate 6, and the fluff brush 61 is provided in multiple groups, and the fluff brush 61 is in contact with the surface of the material belt 7;

[0046] By making the fluff brush 61 contact with the material belt 7, the friction between the elastic plate 6 and the material belt 7 is reduced, and the extrusion force between the elastic plate 6 and the material belt 7 is prevented from being too large, which causes the surface of the material belt 7 to be damaged when the movement speed of the material belt 7 is relatively high. At the same time, since the density of the fluff brush 61 is relatively large, when the fluff brush 61 contacts with the material belt 7, the sealing effect of the gap at the entrance is relatively good.

[0047] As an embodiment of the present invention, the velvet brush 61 is made of polytetrafluoroethylene material, and the velvet brush 61 is anti-statically treated;

[0048] The fluff brush 61 is made of polytetrafluoroethylene material, which further reduces the friction between the fluff brush 61 and the material belt 7. When the fluff brush 61 and the material belt 7 are tightly attached to each other and the sealing effect at the entrance is ensured, excessive wear between the fluff brush 61 and the material belt 7 can be avoided, thereby ensuring a long service life of the fluff brush 61. At the same time, after the fluff brush 61 is anti-statically treated, the fluff brush 61 and the material belt 7 will not generate excessive static electricity after contacting each other, thereby avoiding electrostatic attraction between the fluff brush 61 and the material belt 7, which affects the normal movement of the material belt 7.

[0049] As an embodiment of the present invention, a protective film is attached to the surface of the contact plate 5;

[0050] A protective film is covered on the surface of the contact plate 5 so that the material strip 7 contacts the surface of the protective film, thereby reducing the wear on the surface of the contact plate 5 when the material strip 7 moves and extending the service life of the contact plate 5. At the same time, since the laser die-cutting area on the material strip 7 is located above the contact plate 5, there is a situation in which the laser cuts through the material strip 7 or the laser irradiates the surface of the contact plate 5 during the die-cutting process, which causes the surface of the contact plate 5 to be damaged by the laser. Therefore, a protective film is covered on the surface of the contact plate 5 to avoid or reduce the damage to the surface of the contact plate 5 caused by the laser.

[0051] As an embodiment of the present invention, guide tapes are symmetrically attached to the lower surface of the pressing plate 4, the material tape 7 passes through the guide tapes, the thickness of the guide tapes is greater than or equal to the thickness of the material tape 7, and the guide tapes are Teflon tapes;

[0052] A guide tape is pasted on the surface of the pressing plate 4, and the space between the guide tapes is used to guide and limit the movement of the material strip 7 to prevent the material strip 7 from shifting during the movement and affecting the accuracy of the die-cutting position of the material strip 7. At the same time, due to the guide tape on the pressing plate 4, the surfaces at both ends of the pressing plate 4 and the contact plate 5 will contact each other, which facilitates heat transfer between the pressing plate 4 and the contact plate 5.

[0053] The specific workflow is as follows:

[0054] During operation, the controller controls the external gas source so that an inert gas, such as nitrogen, is sent into the box body 2 from the gas pipe 24, so that the box body 2 is in an inert atmosphere. Then, the self-adhesive packaging material to be cut, that is, the material strip 7 is sent into the box body 2 from the entrance on one side, so that the material strip 7 is die-cut by the laser emitted by the laser head 23 in the box body 2. After the die-cutting is completed, the material strip 7 leaves the box body 2 from the entrance on the other side.

[0055] At the same time, when the material strip 7 is cut by the laser emitted by the laser head 23, the material strip 7 is in an inert atmosphere;

[0056] At the same time, the elastic plate 6 is used to contact and squeeze the material belt 7 so as to relatively close the inlet on the box body 2;

[0057] At the same time, the pressing plate 4 is pressed on the surface of the material belt 7 by the action of the spring 42, so that the material belt 7 moves stably in the box body 2, and the material belt 7 is prevented from shaking due to excessively fast movement speed;

[0058] At the same time, the controller controls the external cooling equipment so that the coolant circulates in the cavity of the pressing plate 4, thereby ensuring that the temperature of the pressing plate 4 is relatively low. At this time, when the material strip 7 passes under the pressing plate 4, the temperature of the surface of the material strip 7 will be affected by the pressing plate 4 and reduced, so that the material strip 7 heats up relatively slowly during laser die cutting and the heat-affected zone is relatively small;

[0059] The front and rear ends of the material strip 7 at the die-cutting position are flattened by the symmetrically arranged pressing plates 4, ensuring that the material strip 7 can stably and accurately pass through the die-cutting area. At the same time, the material strip 7 is quickly cooled before and after die-cutting, so that the heat-affected area of ​​the material strip 7 is relatively small during die-cutting. At the same time, after the material strip 7 is die-cut, the pressing plate 4 located behind the die-cutting position will quickly cool the contacted material strip 7, so that the material strip 7 can be cooled quickly.

[0060] After the material strip 7 enters the box body 2, the material strip 7 changes its moving direction under the action of the guide roller 21, so that the material strip 7 can pass through the surface of the raised platform 3. At the same time, since the surface of the raised platform 3 is much higher than the entrance on the box body 2, the part of the material strip 7 that is being die-cut is also located above the entrance.

[0061] At the same time, since the pressure in the box body 2 is in a slightly positive pressure state, and the inert gas in the box body 2 is introduced from the upper part of the box body 2, the nitrogen gas with a relatively small density introduced into the box body 2 as an inert gas will be in the upper part of the box body 2. After that, the nitrogen gas in the box body 2 will slowly move from top to bottom under the slightly positive pressure. After that, the nitrogen gas in the box body 2 will leave the box body 2 from the gap at the entrance. In this process, the nitrogen concentration in the box body 2, that is, the purity of the nitrogen gas in the box body 2, gradually decreases from top to bottom, and then the material strip 7 die-cut on the surface of the raised platform 3 will always be in a nitrogen atmosphere with a relatively high purity.

[0062] At the same time, since there are only inlets on both sides of the box body 2, and the inlets are located below the upper surface of the raised platform 3, when the outside air invades the box body 2 from the inlets, after the air is doped and mixed into the nitrogen atmosphere, the nitrogen with reduced concentration or purity cannot exceed the height of the raised platform 3, thereby preventing the mixed nitrogen from contacting the die-cutting part of the material strip 7;

[0063] Since the pressing plates 4 are arranged on the front and rear sides of the die-cutting part of the material strip 7, the material strip 7 will be closely attached to the surface of the contact plate 5. At the same time, during the laser die-cutting process of the material strip 7, the heat generated by the laser will be dissipated to the contact plate 5, thereby quickly reducing the temperature of the die-cutting part of the material strip 7;

[0064] At the same time, since the areas of the contact plate 5 and the pressing plate 4 are larger than the area of ​​the material strip 7, the parts of the contact plate 5 at both ends that extend beyond the material strip 7 can be sufficiently close to the pressing plate 4, thereby transferring the heat on the contact plate 5 to the pressing plate 4;

[0065] The fluff brush 61 is in contact with the material belt 7 to reduce the friction between the elastic plate 6 and the material belt 7, thereby preventing the extrusion force between the elastic plate 6 and the material belt 7 from being too large;

[0066] The velvet brush 61 is made of polytetrafluoroethylene material to further reduce the friction between the velvet brush 61 and the material belt 7. At the same time, the velvet brush 61 is anti-statically treated so that the velvet brush 61 and the material belt 7 will not generate excessive static electricity after contacting each other.

[0067] A protective film is covered on the surface of the contact plate 5 so that the material belt 7 contacts the surface of the protective film, thereby reducing the wear of the surface of the contact plate 5 when the material belt 7 moves. At the same time, since the laser die-cutting area on the material belt 7 is located above the contact plate 5, there is a situation in which the laser cuts through the material belt 7 or the laser irradiates the surface of the contact plate 5 during the die-cutting process, thereby causing the surface of the contact plate 5 to be damaged by the laser. Therefore, the protective film is covered on the surface of the contact plate 5 to avoid or reduce the damage of the laser to the surface of the contact plate 5;

[0068] A guide tape is pasted on the surface of the pressing plate 4, and the space between the guide tapes is used to guide and limit the movement of the material strip 7 to prevent the material strip 7 from shifting during the movement and affecting the accuracy of the die-cutting position of the material strip 7. At the same time, due to the guide tape on the pressing plate 4, the surfaces at both ends of the pressing plate 4 and the contact plate 5 will contact each other, which facilitates heat transfer between the pressing plate 4 and the contact plate 5.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laser die-cutting device for self-adhesive packaging materials, comprising a bottom plate (1), a box body (2) mounted on the bottom plate (1), inlet openings being provided on both sides of the box body (2), elastic plates (6) being mounted at the inlet openings, a laser head (23) being mounted in the box body (2), and an air pipe (24) being mounted on the box body (2); Features: A sliding groove (22) is provided on the inner wall of the box body (2), a pressing plate (4) is installed in the box body (2), sliding blocks (41) are installed at both ends of the pressing plate (4), the sliding blocks (41) are slidably installed in the sliding groove (22), and a spring (42) is connected between the upper surface of the sliding block (41) and the top surface of the sliding groove (22); The pressing plate (4) is pressed onto the material strip (7) passing through the box body (2), a cavity is provided inside the pressing plate (4), a cooling pipe (43) is installed on the pressing plate (4), and the cooling pipe (43) delivers external cooling liquid into the cavity; The pressing plates (4) are symmetrically arranged in the box body (2), and the cutting area of ​​the material strip (7) by the laser head (23) is located between the two pressing plates (4); A raised platform (3) is installed on the bottom plate (1), a guide roller (21) is installed in the box body (2), and the material belt (7) passes through the surface of the raised platform (3) under the action of the guide roller (21); The pressure plate (4) is located above the raised platform (3), and the pressure in the box body (2) is in a slightly positive pressure state; A contact plate (5) is mounted on the raised platform (3), the surface of the contact plate (5) is flush with the surface of the raised platform (3), the contact plate (5) is a heat spreader, both ends of the contact plate (5) are located below the pressure plate (4), and the raised platform (3) is made of a material with a relatively low thermal conductivity; A fluff brush (61) is installed on the surface of the elastic plate (6), and a plurality of groups of the fluff brushes (61) are provided. The fluff brushes (61) are in contact with the surface of the material belt (7).

2. According to claim 1, a laser die-cutting device for self-adhesive packaging materials is characterized in that: The velvet brush (61) is made of polytetrafluoroethylene material, and the velvet brush (61) is subjected to antistatic treatment.

3. The laser die-cutting device for self-adhesive packaging materials according to claim 1, characterized in that: A protective film is attached to the surface of the contact plate (5).

4. The laser die-cutting device for self-adhesive packaging materials according to claim 1, characterized in that: The lower surface of the pressing plate (4) is symmetrically pasted with guide tapes, the material tape (7) passes through between the guide tapes, the thickness of the guide tapes is greater than or equal to the thickness of the material tape (7), and the guide tapes are Teflon tapes.

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