Embossing roller and production line for preparing packaging material microstructure

Abstract

The utility model relates to the technical field of packaging material microstructure processing, and provides an embossing roller for preparing a packaging material microstructure and a production line, the embossing roller comprises a roller body, the surface of the roller body is provided with an embossing structure for preparing a packaging material surface microstructure, and vent holes are uniformly distributed in the embossing structure; a heating area, a negative pressure area, a cooling area and a demolding area are sequentially arranged on the surface of the knurling structure in the circumferential direction of the roller body. The knurling structure is arranged on the surface of the roller body provided by the utility model, so that a surface microstructure of a packaging material can be prepared; the embossing structure is provided with the vent holes and is provided with the heating area, the negative pressure area, the cooling area and the demolding area, the precision of the microstructure can be guaranteed, the microstructure can be rapidly cooled and demolded through the cooling area and the demolding area after being formed, and therefore the microstructure of the packaging material has the good forming effect, and the quality level of a finished product is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to packaging material microstructure processing technical field especially, a kind of for preparing packaging material microstructure's flower roll and production line. BACKGROUND

[0002] Currently, embossing structure is prepared on the surface of packaging material, generally heating forming mode is used, first material is preheated, then material is pressed by rubber roller and heated flower roll, after material demoulding, it is cooled and shaped again. Microstructure on the surface of material needs to be formed perfectly in the whole preparation process, to ensure the precise preset side wall angle and structure depth.

[0003] However, in actual processing process, the following shortcomings exist in using existing heating roller to form microstructure on the surface of packaging material:

[0004] Firstly, because high molecular material in packaging material softens into viscous flow state under heating state, it causes that packaging material is adhered and pulled between heating roller during demoulding process due to untimely and inadequate cooling, which causes the precise microstructure on the surface of packaging material to be deformed, and affects the forming effect of microstructure;Secondly, the long-time wear between rubber roller and flower roller also causes that part of compression position of rubber roller and flower roller is not tight enough, which causes that packaging material is not completely formed on the surface of microstructure flower roller, so as to cause the precision of functional microstructure preparation to be poor, and affect the quality and production efficiency of finished product. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of for preparing packaging material microstructure's flower roll and production line to solve the technical problems, such as that packaging material is not timely and not in place in prior art after preparing microstructure Demoulding cooling, which causes poor microstructure forming effect, and uneven compression of rubber roller and flower roller causes poor precision of microstructure.

[0006] The utility model provides a kind of for preparing packaging material microstructure's flower roll, it includes: roller body, the surface of the roller body is provided with the embossing structure for preparing the microstructure on the surface of packaging material, and the embossing structure is uniformly distributed with air hole, the inside of the roller body is provided with containing cavity;

[0007] Support structure is arranged in the containing cavity, the support structure and the roller body relatively move, and the support structure divides the containing cavity along the circumference of the roller body into first space, second space, third space and fourth space;

[0008] Wherein, in the process of the roller body rolling the packaging material, the first space corresponds to the heating area of the roller body surface, the second space corresponds to the negative pressure area of the roller body surface, the third space corresponds to the cooling area of the roller body surface, and the fourth space corresponds to the demoulding area of the roller body surface.

[0009] According to the flower roller for preparing the microstructure of the packaging material, further comprising: a heating unit, a negative pressure unit and a demoulding unit;

[0010] The heating unit is arranged on the support structure and located in the first space, and is used for heating the heating area.

[0011] The negative pressure unit is arranged on the support structure and located in the second space, and is used for providing suction force to the negative pressure area.

[0012] The demoulding unit is arranged on the support structure and located in the fourth space, and is used for blowing and demoulding the demoulding area.

[0013] According to the flower roller for preparing the microstructure of the packaging material, further comprising: a shaft body, the shaft body passes through the support structure along the rolling center of the roller body, and the support structure rotates around the shaft body to adjust the relative positions of the heating area, the negative pressure area, the cooling area and the demoulding area.

[0014] According to the flower roller for preparing the microstructure of the packaging material, the temperature of the heating area is between 30 DEG C-120 DEG C.

[0015] The temperature of the negative pressure area is between 30 DEG C-120 DEG C, and the temperature of the negative pressure area is greater than the temperature of the heating area.

[0016] The temperature of the cooling area is less than the temperature of the negative pressure area, and the temperature of the demoulding area is less than the temperature of the cooling area.

[0017] According to the flower roller for preparing the microstructure of the packaging material, the temperature of the air sent by the demoulding unit is less than the temperature of the demoulding area.

[0018] According to the flower roller for preparing the microstructure of the packaging material, the embossing structure is any one or combination of several of linear pattern, curved pattern, diamond grid pattern and irregular pattern arranged on the outer surface of the roller body.

[0019] According to the flower roller for preparing the microstructure of the packaging material, the embossing structure is a convex three-dimensional structure protruding from the outer surface of the roller body.

[0020] The interval between the convex three-dimensional structures is between 1 nm and 1 mm;

[0021] The height of the convex three-dimensional structure is between 1 nm and 2 mm.

[0022] According to the embossing roller for preparing the microstructure of the packaging material provided by the utility model, the embossing structure is a concave three-dimensional structure extending towards the inside of the roller body, and the packaging material is pressed and imprinted by the embossing structure.

[0023] The interval between the concave three-dimensional structures is between 1 nm and 1 mm;

[0024] The depth of the concave three-dimensional structure is between 1 nm and 2 mm.

[0025] The utility model also provides a production line, including above-mentioned for preparing packaging material microstructure's embossing roller, still including unwinding roller, rubber roller, cooling roller, tensioning roller and winding roller, the unwinding roller sets up in the front section of roller body, rubber roller is closely pressed with the roller body, is used for pressing the packaging material, the cooling roller sets up in the rear section of roller body, the rear section of cooling roller sequentially sets up tensioning roller and winding roller.

[0026] According to the production line provided by the utility model, the preheating device is arranged between the unwinding roller and the roller body.

[0027] The embossing roller for preparing the microstructure of the packaging material provided by the utility model is provided with the embossing structure on the surface of the roller body, and the surface microstructure of the packaging material can be prepared; the air vent is arranged on the embossing structure, and the heating area, the negative pressure area, the cooling area and the demolding area are arranged respectively; the above four areas correspond to four functions of the roller body respectively; the packaging material can be more closely attached to the embossing structure after being heated in the heating area and passing through the negative pressure area, so that the microstructure can be more fully formed, and the precision of the microstructure is guaranteed; after being formed, the packaging material can be rapidly cooled and demolded in the cooling area and the demolding area, and the problem of adhesion and pulling of the packaging material does not occur, so that the microstructure of the packaging material has good forming effect, and the overall quality level of the finished product is improved.

[0028] In addition, the production line provided by the utility model includes the above-mentioned embossing roller for preparing the microstructure of the packaging material, and the packaging material can be rapidly and continuously processed, and the production efficiency is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 is a side view of the embossing roller provided by the present application for preparing microstructure of packaging material;

[0031] Figure 2 is an example of the embossing structure provided by the present application Figure One ;

[0032] Figure 3 is an example of the embossing structure provided by the present application Figure Two ;

[0033] Figure 4 is an example of the embossing structure provided by the present application Figure Three ;

[0034] Figure 5 is an example of the embossing structure provided by the present application Figure Four ;

[0035] Figure 6 is an example of the embossing structure provided by the present application Figure Five ;

[0036] Figure 7 is an example of the embossing structure provided by the present application Figure Six ;

[0037] Figure 8 is a schematic view of the production line provided by the present application.

[0038] Reference signs:

[0039] 1: roller body; 11: embossing structure; 111: convex three-dimensional structure; 112: concave three-dimensional structure; 12: air hole; 13: heating area, 14: negative pressure area; 15: cooling area; 16: demolding area;

[0040] 2: containing cavity; 21: first space; 22: second space; 23: third space; 24: fourth space;

[0041] 3: support structure; 31: heating unit; 32: negative pressure unit; 33: demolding unit;

[0042] 4: shaft body;

[0043] 51: unwinding roller; 52: rubber roller; 53: cooling roller; 54: tension roller; 55: winding roller; 56: preheating device. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described clearly and completely in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0045] The utility model provides a roller for preparing microstructure of packaging material and production line. Figures 1-8 The utility model provides a roller for preparing microstructure of packaging material and production line.

[0046] Figure 1 It is the side view of the roller for preparing microstructure of packaging material provided by the utility model, as shown in Figure 1 The utility model provides a roller for preparing microstructure of packaging material, which comprises a roller body 1, the surface of the roller body 1 is provided with an embossing structure 11 for preparing the surface microstructure of packaging material, and the embossing structure 11 is uniformly provided with a vent hole 12.

[0047] The inside of the roller body 1 is provided with a containing cavity 2, and the containing cavity 2 is provided with a support structure 3; the support structure 3 divides the containing cavity 2 into a first space 21, a second space 22, a third space 23 and a fourth space 24 along the circumference of the roller body 1; wherein the surface of the roller body 1 corresponding to the first space 21 is a heating area 13; the surface of the roller body 1 corresponding to the second space 22 is a negative pressure area 14; the surface of the roller body 1 corresponding to the third space 23 is a cooling area 15; and the surface of the roller body 1 corresponding to the fourth space 24 is a demolding area 16.

[0048] The heating area 13 heats the packaging material on the surface of the roller body 1; the negative pressure area 14 adsorbs the packaging material on the surface of the roller body 1; the cooling area 15 cools the packaging material on the surface of the roller body 1; and the demolding area 16 demolds the packaging material on the surface of the roller body 1; the above-mentioned heating area 13, negative pressure area 14, cooling area 15 and demolding area 16 are not fixedly arranged on the surface of the roller body 1 and will not change position following the rotation of the roller body 1, but are determined according to the heating, adsorption, cooling and demolding requirements of the packaging material.

[0049] Specifically, in the embodiment, the support structure 3 is a frame body provided with a plurality of partitions, and the plurality of partitions divide the containing cavity 2 into a plurality of spaces.

[0050] Further, the support structure 3 described above is not limited to the form and structure shown in the drawings, and in another embodiment of the present application, the support structure 3 is a cylinder; the two ends of the cylinder are provided with shafts 4, the shafts 4 pass through the two ends of the roller body 1 and are connected with a power source such as a motor, since the power sources of the roller body 1 and the cylinder are different, differential rotation of the cylinder and the roller body 1 is realized, and the relative positions of the plurality of spaces in the cylinder and the plurality of regions of the roller body 1 can be adjusted; a plurality of holes need to be formed on the surface of the cylinder for ventilation.

[0051] According to the flower roller for preparing a microstructure of packaging material provided in the embodiment of the present application, further comprising: a heating unit 31, a negative pressure unit 32 and a demolding unit 33; the heating unit 31 is arranged on the support structure 3 and located in the first space 21, and is used for heating the heating area 13; the heating unit 31 can adopt uniformly distributed electric heating rods or electric heating wires, and the surface of the roller body 1 is heated step by step and quickly, so that the surface of the roller body 1 can be raised to a preset temperature when it is in contact with the packaging material; when the heating rod is adopted, the fixed end of the heating rod is fixed on the support structure 3, and the heating end of the heating rod is close to the inner wall of the roller body 1 to heat the roller body 1; further, in order to monitor the accuracy of the temperature of the heating area 13, the heating area 13 is provided with a plurality of uniformly distributed temperature probes.

[0052] The negative pressure unit 32 is arranged on the support structure 3 and located in the second space 22, and is used for providing suction force to the negative pressure area 14; the negative pressure unit 32 can adopt a vacuum air extractor, and according to actual use requirements, a plurality of vacuum air extractors can be arranged in the second space 22 at intervals; wherein the air suction port of the vacuum air extractor is close to the inner wall of the roller body 1 as much as possible to provide stronger suction force and achieve better negative pressure effect; in the vacuum air suction area, the heating unit 31 continuously heats, when the packaging material is in contact with the heating area 13, the packaging material is continuously softened due to the high temperature of the roller body 1, and under the pressure of the upper rubber roller 52, the packaging material is pressed into the embossing structure 11 on the surface of the roller body 1, and the softened and pressed packaging material is further adsorbed by the principle of vacuum adsorption through the ventilation hole 12, so that the packaging material is tightly attached to the surface of the flower roller microstructure, and the problem of incomplete filling of the packaging material in the flower roller microstructure is solved.

[0053] The demolding unit 33 is arranged on the support structure 3 and located in the fourth space 24, and is used for blowing and demolding the demolding area 16; the demolding unit 33 can adopt a gas blower, the gas blower blows high-speed cold wind, which can quickly cool and shape the roller body 1 and the packaging material, and the impact force of the high-speed gas pushes the packaging material outward through the ventilation hole, which helps the cooled packaging material to separate from the surface of the flower roller microstructure mold, and avoids the problem of pulling and deformation of the packaging material in the previous demolding process.

[0054] According to the flower roller for preparing microstructure of packaging material provided by the embodiment of the utility model, the shaft body 4 is installed with a motor or other power source at the end, the shaft body 4 passes through the support structure 3 along the rolling center of the roller body 1, the support structure 3 rotates around the shaft body 4 to realize the adjustment of the relative positions of the heating area 13, the negative pressure area 14, the cooling area 15 and the demolding area 16; the function is used for the deviation of the position of the impression point of the flower roller and the rubber roller 52 and the cooling roller 53 in the actual production line assembly, if the deviation leads to the non-correspondence of each space and each area, the shaft body 4 can be rotated by the motor to correct.

[0055] In another embodiment of the utility model, the partition plates on the support structure 3 are connected with the shaft body 4, and the heating unit 31 is also connected with the shaft body 4, by controlling the rotation of the shaft body 4, the partition plates and the heating unit 31 can be rotated, the rotation of the partition plates brings the change of the space, thereby the size of the first space 21, the second space 22, the third space 23 and the fourth space 24, the proportion of each space in the accommodation cavity 2 and the distribution position of the space can be adjusted, and the position of the heating unit can also be adjusted; thereby the corresponding adjustment of each area on the surface of the roller body 1 is carried out to cope with the processing requirement of different packaging materials.

[0056] According to the flower roller for preparing microstructure of packaging material provided by the embodiment of the utility model, the temperature of the heating area 13 is between 30 DEG C-120 DEG C; the temperature of the negative pressure area 14 is between 30 DEG C-120 DEG C, and the temperature of the negative pressure area 14 is greater than the temperature of the heating area 13; the temperature of the cooling area 15 is less than the temperature of the negative pressure area 14, and the temperature of the demolding area 16 is less than the temperature of the cooling area 15; wherein the temperature of the air sent by the demolding unit 33 is less than the temperature of the demolding area 16.

[0057] Further, the utility model provides a specific embodiment:

[0058] For example, the polyethylene / Al foil composite film is used as the packaging material, the diameter of the roller body 1 is greater than 400 mm, the heating area 13 between the cooling area 15 and the negative pressure area 14 is provided with more than three heating rods, the temperature of the heating rods is set to 30-120℃, preferably 80℃, the temperature of the vacuum suction area is set to 30-120℃, preferably 90℃, the polyethylene / Al foil composite film (the thickness of the composite film is 1-1000 microns, preferably 100 microns, the thickness of the Al film is 1-1000 microns, preferably 40 microns) is attached to the roller body 1 after the previous process, the packaging material is softened and closely attached to the surface of the embossing structure 11 of the roller body 1 after being sucked by the vacuum fan in the negative pressure unit 32, wherein the forming pressure is 0.06-0.085 MPa, preferably 0.07 MPa, the packaging material rotates with the roller body 1 to the cooling area 15 and the demolding area 16, wherein the temperature of the cooling air is 0-20℃, preferably 10℃, the blowing pressure is less than 0.1 MPa, preferably 0.08 MPa, and finally, the packaging material is cooled and shaped and demolded from the surface of the embossing structure 11.

[0059] As shown in Figures 2-5 , several example diagrams of the embossing structure are provided, and the roller provided by the embodiment of the present application is used for preparing the microstructure of the packaging material, the embossing structure 11 is any one or a combination of several of the straight line pattern, the curved line pattern, the rhombic grid pattern and the irregular pattern arranged on the outer surface of the roller body 1.

[0060] As shown in Figure 6 and Figure 7 , the roller provided by the embodiment of the present application is used for preparing the microstructure of the packaging material, the embossing structure 11 is a three-dimensional pattern arranged on the outer surface of the roller body 1.

[0061] The three-dimensional pattern includes the convex three-dimensional structure 111 protruding from the outer surface of the roller body 1 and / or the concave three-dimensional structure 112 extending towards the inside of the roller body 1.

[0062] The spacing between the convex three-dimensional structure 111 and / or the concave three-dimensional structure 112 is between 1 nm and 1 mm.

[0063] The height of the convex three-dimensional structure 111 and / or the depth of the concave three-dimensional structure 112 is between 1 nm and 2 mm.

[0064] The above-mentioned three-dimensional structure can be in the shape of a cylinder, a prism, a pyramid, a cone, etc.

[0065] Further, in the above-mentioned embossing structure 11, the straight line pattern, the curved line pattern, the rhombic grid pattern, the irregular pattern, the convex three-dimensional structure 111 and the concave three-dimensional structure 112 can exist alone or in the form of two or more combinations.

[0066] Figure 8This is a schematic diagram of the production line provided by this utility model, as shown below. Figure 8 As shown, this utility model also provides a production line, including the above-mentioned patterned roller for preparing microstructures of packaging materials; it also includes an unwinding roller 51, a rubber roller 52, a cooling roller 53, a tensioning roller 54, and a take-up roller 55; the unwinding roller 51 is disposed at the front section of the roller body 1; the rubber roller 52 is pressed against the roller body 1 for imprinting the packaging material; the cooling roller 53 is disposed at the rear section of the roller body 1; the tensioning roller 54 and the take-up roller 55 are sequentially disposed at the rear section of the cooling roller 53; the tensioning roller 54 is used to provide tension to the packaging material to tighten the packaging material, ensure the flatness of the packaging material, and facilitate the uniformity and flatness of film formation, thereby ensuring the quality of the product. Pressure sensors can be added between the tensioning roller 54 and the take-up roller 55, and between the unwinding roller 51 and the roller body 1, to monitor the tension of the packaging material in real time.

[0067] According to an embodiment of the present invention, a production line further includes a preheating device 56, which is disposed between the unwinding roller 51 and the roller body 1 for preheating the packaging material, so as to facilitate the rapid attainment of the preset temperature in the subsequent process, thereby facilitating the molding of microstructures and improving production efficiency.

[0068] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pattern roll for preparing microstructures of packaging material, characterized in that The application relates to a roller body (1) provided with an embossing structure (11) for preparing a microstructure on the surface of a packaging material, wherein the embossing structure (11) is uniformly provided with air holes (12), and the roller body (1) is internally provided with a containing cavity (2); a supporting structure (3) is arranged in the containing cavity (2), the supporting structure (3) and the roller body (1) are relatively moved, and the supporting structure (3) divides the containing cavity (2) into a first space (21), a second space (22), a third space (23) and a fourth space (24) along the circumference of the roller body (1); wherein, in the process that the roller body (1) rolls the packaging material, the surface of the roller body (1) corresponding to the first space (21) is a heating area (13), the surface of the roller body (1) corresponding to the second space (22) is a negative pressure area (14), the surface of the roller body (1) corresponding to the third space (23) is a cooling area (15), and the surface of the roller body (1) corresponding to the fourth space (24) is a demolding area (16). The application further comprises a heating unit (31), a negative pressure unit (32) and a demolding unit (33); the heating unit (31) is arranged on the supporting structure (3) and located in the first space (21) and used for heating the heating area (13); the negative pressure unit (32) is arranged on the supporting structure (3) and located in the second space (22) and used for providing suction force to the negative pressure area (14); and the demolding unit (33) is arranged on the supporting structure (3) and located in the fourth space (24) and used for blowing and demolding the demolding area (16). The application further comprises a shaft body (4) penetrating through the supporting structure (3) along the rolling center of the roller body (1), the supporting structure (3) rotates around the shaft body (4) to adjust the relative positions of the heating area (13), the negative pressure area (14), the cooling area (15) and the demolding area (16). The temperature of the heating area (13) is between 30 DEG C and 120 DEG C; the temperature of the negative pressure area (14) is between 30 DEG C and 120 DEG C, and the temperature of the negative pressure area (14) is higher than that of the heating area (13); the temperature of the cooling area (15) is lower than that of the negative pressure area (14), and the temperature of the demolding area (16) is lower than that of the cooling area (15).

2. The flower roll for preparing microstructures of packaging material according to claim 1, characterized in that, The demolding unit (33) sends out air with a temperature lower than that of the demolding area (16). The embossing structure (11) is any one or a combination of linear patterns, curve patterns, rhombic grid patterns and irregular patterns arranged on the outer surface of the roller body (1). The embossing structure (11) is a convex three-dimensional structure (111) protruding from the outer surface of the roller body (1); the distance between the convex three-dimensional structures (111) is between 1 nm and 1 mm; and the height of the convex three-dimensional structures (111) is between 1 nm and 2 mm. ​ ​ 3. The flower roll for making microstructures of packaging material according to claim 1, characterized in that, ​ ​ 4. The flower roll for making microstructures of packaging material according to claim 2, characterized in that, ​ ​ ​ 5. The flower roll for making microstructures of packaging material according to claim 4, characterized in that, ​ 6. An engraved roll for producing microstructures in packaging material according to any one of claims 1-5, characterised in that ​ 7. An engraved roll for making microstructures in packaging material according to any of claims 1-5, characterised in that ​ ​ ​ 8. An engraved roll for making microstructures in packaging material according to any of claims 1-5, characterized in that, The embossing structure (11) is a concave three-dimensional structure (112) extending towards the inside of the roller body (1); The spacing between the concave three-dimensional structures (112) is between 1 nm and 1 mm; The depth of the concave three-dimensional structure (112) is between 1 nm and 2 mm.

9. A production line, characterized in that, The embossing roller for preparing microstructure of packaging material according to any one of claims 1-8; Further comprising an unwinding roller (51), a rubber roller (52), a cooling roller (53), a tensioning roller (54) and a winding roller (55); The unwinding roller (51) is arranged at the front section of the roller body (1); The rubber roller (52) is in pressure contact with the roller body (1) and is used for stamping the packaging material; The cooling roller (53) is arranged at the rear section of the roller body (1); The rear section of the cooling roller (53) is sequentially provided with the tensioning roller (54) and the winding roller (55).

10. The production line according to claim 9, characterized in that, Further comprising a preheating device (56) arranged between the unwinding roller (51) and the roller body (1).

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