Preparation method of chip cutting film

Abstract

The invention provides a preparation method of a chip cutting film, and belongs to the technical field of cutting film preparation methods. A preparation method of a chip cutting film is characterized by comprising the following steps that S1, 100 parts by mass of PVC resin powder, 30 parts by mass of a plasticizer, 2.2 parts by mass of a stabilizer, 0.07 part by mass of a blue pigment, 0.04 part by mass of a red pigment and 0.6 part by mass of a processing aid are put into a stirrer through high-speed stirring and mixed to be uniform at a high speed; and S2, carrying out extrusion, open milling, filtration, calendaring, cooling, trimming, curling and other working sections on the material in the S1 to obtain a finished product. The adhesive tape has the advantages of easiness in sticking and stripping, no adhesive shifting and no fracture.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting film preparation methods, and in particular relates to a chip cutting film preparation method. Background Art

[0002] Chip cutting film is a special film, usually made of polymer material, with good adhesion and high temperature resistance. During the wafer cutting process, the chip cutting film is coated on the silicon wafer, and then a laser or other cutting tools are used to cut the wafer into independent chips or devices according to the design requirements. The cutting film plays a role in protecting the wafer during the cutting process to ensure that the chip or device will not be damaged. During the preparation process of the existing chip cutting film, especially when trimming the film material, the film material is quickly cut only by a cutter fixed on the cutting frame, and the cutting frame is fixed on the workbench. If the cutting distance needs to be adjusted, it needs to be adjusted manually, which increases the processing time and is very troublesome. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems in the prior art and to propose a method for preparing a chip cutting film, which has the advantages of easy peeling, no glue transfer and no cracking.

[0004] The object of the present invention can be achieved by the following technical scheme: A method for preparing a chip cutting film, characterized in that the preparation method comprises the following steps:

[0005] S1. Put 100 parts of PVC resin powder, 30 parts of plasticizer, 2.2 parts of stabilizer, 0.07 parts of blue colorant, 0.04 parts of red colorant and 0.6 parts of processing aid into a blender by high-speed stirring and mix them evenly;

[0006] The materials in S2 and S1 are then subjected to extrusion, refining, filtering, calendering, cooling, trimming, curling and other processes to obtain finished products.

[0007] Preferably, the trimming device in step S2 includes a workbench, the workbench has a conveying roller for conveying film materials and a first driving mechanism installed on the left and right sides of the workbench, a work frame is slidably arranged on the first driving mechanism, two first grooves are symmetrically provided on the work frame, a first mounting frame is symmetrically installed on the work frame, a partition plate is provided at the center of the work frame, a first driving motor is installed on the first mounting frame, a first screw rod is transmission-connected to the output shaft of the first driving motor, first guide rails are installed on both sides of the first mounting frame, first sliding seats are slidably arranged on the two first guide rails, the first sliding seat is connected to the first screw rod, and the first mounting frame A through slot connected to the first groove is provided at the bottom, and second guide rails are installed on both sides of the through slot. A first sliding block is provided at the bottom of the first sliding seat, and the first sliding block is slidably arranged on the second guide rail. A measuring piece for pointing to the width of the cutting film material is provided on the top of the first sliding block, and a scale plate is provided on one side of the first mounting frame, and the measuring piece points to the scale plate; a lifting frame is fixed to the bottom of the first sliding block, a first lifting motor is installed at the center of the lifting frame, and a plurality of lifting rods are also installed on the lifting frame, and the lifting rods and the first lifting motor are connected to a second mounting plate together, and the bottom of the second mounting plate includes a first positioning pressing assembly, a second positioning pressing assembly and a cutting knife assembly;

[0008] The cutter assembly includes a cutter frame, a second drive motor and a rotary cutter. The cutter frame is fixed to the bottom of the second mounting plate, the second drive motor is installed on one side of the cutter frame, and the output shaft of the second drive motor is connected to the rotary cutter for cutting the edges of the film material.

[0009] Preferably, the first drive assembly includes a third drive motor, a second mounting frame, a third guide rail, a second screw rod and a second sliding block. The second mounting frame is mounted on the front and rear sides of the workbench. The third drive motor is mounted on one side of the second mounting frame. The output shaft of the third drive motor is transmission-connected with a second screw rod. The second mounting frame is also mounted with a third guide rail. A second sliding block is slidably arranged on the third guide rail. The second sliding block is connected to the second screw rod, and a work frame is fixed on the second sliding block.

[0010] Preferably, the measuring member includes a measuring disk and a measuring needle. The measuring disk is fixed on the top of the first sliding block. An observation hole is provided on the measuring disk. A measuring needle is installed at the bottom of one end of the measuring disk. The measuring needle is aligned with the scale line on the scale plate.

[0011] Preferably, the first pressing assembly includes a first fixed rod located on both sides of the second driving motor, the first fixed rod is fixed to the bottom of the second mounting plate, first connecting plates are installed on both sides of the cutting frame, a second connecting plate is installed on one side of the first connecting plate, and the second connecting plate is also connected to the first fixed rod, the bottom of the first fixed rod has a first pressing rod, and the bottom of the cutting frame has a second pressing rod, the first pressing rod and the second pressing rod are jointly connected to a first pressing plate, and the first pressing plate is located on the left side of the rotating cutting disk and rests against the top of the film material.

[0012] Preferably, the second pressing assembly includes a second fixing rod fixed to the bottom of the second mounting plate, a third pressing rod is fixed to the bottom of the second fixing rod, the third pressing rod is fixedly connected to the second pressing plate, and the second pressing plate is located on the right side of the rotating cutting disk and rests against the top of the film material.

[0013] Preferably, a second groove is further formed at the bottom of the second mounting plate.

[0014] Preferably, a control panel is also installed on one side of the workbench.

[0015] Preferably, the processing aid in step S1 is an acrylic polymer, and the stabilizer in step S1 is a barium zinc stabilizer.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. Easy to peel off, no glue transfer, and no cracking when bent 90° with the applied object;

[0018] 2. Withstand 2Kg / 2.5cm 2 Load for 360 hours, 20-50℃, and then peel off without any adhesive residue on the surface;

[0019] 3. After being irradiated with 300W UV lamp at 50℃ for 240 hours, it will not crack or deform, and there will be no residual glue on the surface after peeling off; moisture resistance test, 1 hour of light + 1 hour of rain > 240 hours without falling off, and there will be no residual glue on the surface after peeling off;

[0020] 4. By setting a first sliding seat that can automatically adjust the cutting edge of the membrane material and a first positioning pressing assembly and a second positioning pressing assembly for pressing both sides of the membrane material to be cut while cutting the edge, it is beneficial to accurate cutting and has a high degree of automation. At the same time, it has a measuring piece and a scale plate for convenient observation and indication, which is beneficial to real-time observation of the size and width of the cutting edge and convenient adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the present invention.

[0022] Figure 2It is a side sectional view of the present invention.

[0023] Figure 3 It is a top view of the second sliding block and the working frame of the present invention.

[0024] Figure 4 It is a structural diagram below the second mounting plate in the present invention.

[0025] Figure 5 It is a partial structural diagram between the working frame and the first groove in the present invention.

[0026] Figure 6 It is an enlarged view of point A in the present invention.

[0027] In the figure, 2, workbench; 21, conveying roller; 31, third driving motor; 32, second mounting frame; 33, third guide rail; 34, second screw rod; 35, second sliding block; 4, work frame; 41, first groove; 411, through groove; 412, second guide rail; 42, first mounting frame; 43, partition plate; 44, first driving motor; 45, first screw rod; 46, first guide rail; 51, first sliding seat; 52, first sliding block; 531, measuring disk; 532, measuring needle; 533 , observation hole; 54, scale plate; 55, lifting frame; 56, first lifting motor; 57, lifting rod; 58, second mounting plate; 581, cutter frame; 582, second drive motor; 583, rotary cutter; 61, first fixed rod; 611, first pressing rod; 62, first connecting plate; 63, second connecting plate; 64, second pressing rod; 65, first pressing plate; 71, second fixed rod; 72, third pressing rod; 73, second pressing plate; 74, second groove; 8, control panel. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figures 1 to 6 As shown, a method for preparing a chip cutting film is characterized in that the preparation method comprises the following steps:

[0030] S1. Put 100 parts of PVC resin powder, 30 parts of plasticizer, 2.2 parts of stabilizer, 0.07 parts of blue colorant, 0.04 parts of red colorant and 0.6 parts of processing aid into a blender by high-speed stirring and mix them evenly;

[0031] The materials in S2 and S1 are then extruded, smelted, filtered, rolled, cooled, trimmed, and curled to obtain the finished product. With the above structure, the chip cutting film is easy to peel, does not transfer glue, and does not break when bent 90° with the applied object; it can withstand 2Kg / 2.5cm 2 Load for 360 hours, no glue residue on the surface after peeling off at 20-50℃; no cracking or deformation after irradiation with 300W UV lamp at 50℃ for 240 hours, no glue residue on the surface after peeling off; moisture resistance test, 1 hour of light + 1 hour of rain > 240 hours without falling off, no glue residue on the surface after peeling off;

[0032] Specifically, if Figures 1 to 6 As shown, the trimming device in step S2 includes a workbench 2, the workbench 2 has a conveying roller 21 for conveying film materials and a first driving mechanism installed on the left and right sides of the workbench 2, a work frame 4 is slidably arranged on the first driving mechanism, two first grooves 41 are symmetrically provided on the work frame 4, a first mounting frame 42 is symmetrically installed on the work frame 4, a partition plate 43 is provided at the center of the work frame 4, a first driving motor 44 is installed on the first mounting frame 42, a first screw rod 45 is transmission-connected to the output shaft of the first driving motor 44, first guide rails 46 are installed on both sides of the frame of the first mounting frame 42, first sliding seats 51 are slidably arranged on the two first guide rails 46, the first sliding seats 51 are connected to the first screw rod 45, and the bottom of the first mounting frame 42 is provided with a first guide rail 46. A through slot 411 connected to the first groove 41, and second guide rails 412 are installed on both sides of the through slot 411. The bottom of the first sliding seat 51 has a first sliding block 52, and the first sliding block 52 is slidably set on the second guide rail 412. The top of the first sliding block 52 has a measuring piece for pointing to the width of the cutting film material, and one side of the first installation frame 42 has a scale plate 54, and the measuring piece points to the scale plate 54; a lifting frame 55 is fixed to the bottom of the first sliding block 52, and a first lifting motor 56 is installed at the center of the lifting frame 55. A plurality of lifting rods 57 are also installed on the lifting frame 55, and the lifting rods 57 and the first lifting motor 56 are commonly connected to a second mounting plate 58, and the bottom of the second mounting plate 58 includes a first positioning pressing assembly, a second positioning pressing assembly and a cutter assembly;

[0033] The cutter assembly includes a cutter frame 581, a second drive motor 582 and a rotating cutter 583. The cutter frame 581 is fixed to the bottom of the second mounting plate 58. The second drive motor 582 is installed on one side of the cutter frame 581. The output shaft of the second drive motor 582 is connected to the rotating cutter 583 for cutting the edges of the film material.

[0034] With the above structure, the working frame 4 is driven to move left or right by the first driving assembly, and the first screw rod 45 is driven to rotate by the first driving motor 44. The first screw rod 45 is connected to the first sliding seat 51. The first guide rails 46 arranged on both sides of the first sliding seat 51 are slidably matched with the first sliding seat 51. The first sliding seat 51 can be moved left or right according to the required cutting size. The measuring piece arranged above the first sliding seat 51 can point to the cutting size in real time, which is convenient for the operator to observe the cutting size of the cutting knife assembly when cutting the edges in real time. If there is a deviation, the first driving motor 44 can be controlled to make corresponding adjustments. After determining the cutting size, the first lifting motor 56 and the lifting rod 57 are used to adjust the cutting size. The second mounting plate 58 is lowered, and the first positioning pressing assembly and the second positioning pressing assembly on the second mounting plate 58 are pressed down to the upper surface against the film material, and the second driving motor 582 is driven to drive the rotary cutter 583 to rotate to trim the film material. While trimming, the working frame 4 can be moved left and right by the first driving assembly to quickly cut both sides of the film material. By providing a first sliding seat 51 that can automatically adjust the trimming of the film material and a first positioning pressing assembly and a second positioning pressing assembly for pressing both sides of the film material to be cut while trimming, accurate trimming is facilitated and the degree of automation is high. At the same time, the measuring parts and the scale plate 54 for convenient observation and indication are provided, which are conducive to real-time observation of the size and width of the trimming and convenient adjustment.

[0035] like Figures 1 to 6 As shown, the first driving assembly includes a third driving motor 31, a second mounting frame 32, a third guide rail 33, a second screw rod 34 and a second sliding block 35. The second mounting frame 32 is mounted on the front and rear sides of the workbench 2. The third driving motor 31 is mounted on one side of the second mounting frame 32. The second screw rod 34 is transmission-connected to the output shaft of the third driving motor 31. The third guide rail 33 is also mounted in the second mounting frame 32. The second sliding block 35 is slidably arranged on the third guide rail 33. The second sliding block 35 is connected to the second screw rod 34, and the working frame 4 is fixed on the second sliding block 35.

[0036] The third driving motor 31 is provided to drive the second sliding block 35 slidably arranged on the third guide rail 33 to move leftward or rightward, which is beneficial to automatically move the working frame 4 during edge trimming, and has a high degree of automation and higher edge trimming efficiency.

[0037] like Figures 1 to 6 As shown, the measuring member includes a measuring disk 531 and a measuring needle 532. The measuring disk 531 is fixed on the top of the first sliding block 52. An observation hole 533 is opened on the measuring disk 531. A measuring needle 532 is installed at the bottom of one end of the measuring disk 531. The measuring needle 532 is aligned with the scale line on the scale plate 54.

[0038] The provision of the directional measuring needle 532 and the observation hole 533 facilitates the operator to observe the scale lines of the scale plate 54 in real time and make real-time adjustments.

[0039] like Figures 1 to 6 As shown, the first pressing assembly includes a first fixed rod 61 located on both sides of the second driving motor 582, the first fixed rod 61 is fixed to the bottom of the second mounting plate 58, first connecting plates 62 are installed on both sides of the cutting frame 581, a second connecting plate 63 is installed on one side of the first connecting plate 62, and the second connecting plate 63 is also connected to the first fixed rod 61, the bottom of the first fixed rod 61 has a first pressing rod 611, the bottom of the cutting frame 581 has a second pressing rod 64, the first pressing rod 611 and the second pressing rod 64 are jointly connected to a first pressing plate 65, the first pressing plate 65 is located on the left side of the rotating cutting disk and rests against the top of the film material.

[0040] like Figures 1 to 6 As shown, the second pressing assembly includes a second fixing rod 71 fixed to the bottom of the second mounting plate 58, a third pressing rod 72 is fixed to the bottom of the second fixing rod 71, and the third pressing rod 72 is fixedly connected to a second pressing plate 73. The second pressing plate 73 is located on the right side of the rotating cutting disk and rests against the top of the film material.

[0041] By providing a first sliding seat 51 that can automatically adjust the cutting edge of the membrane material, and a first positioning pressing assembly and a second positioning pressing assembly that are used to press the two sides of the membrane material to be cut while cutting the edge, it is beneficial to accurate cutting, better cutting effect, and a high degree of automation. At the same time, the first positioning pressing assembly and the second positioning pressing assembly are integrated into one design, with a good pressing effect and a high degree of mechanization.

[0042] like Figures 1 to 6 As shown, a second groove 74 is further defined at the bottom of the second mounting plate 58 .

[0043] The second groove 74 is provided to reserve space for the rotary cutter 583 , thereby preventing the rotary cutter 583 from accidentally cutting the bottom of the second mounting plate 58 , which is safer.

[0044] like Figures 1 to 6 As shown, a control panel 8 is also installed on one side of the workbench 2.

[0045] By setting the control panel 8, it is convenient and quick to control the operation of the device in real time.

[0046] like Figures 1 to 6 As shown, the processing aid in step S1 is an acrylic polymer, and the stabilizer in step S1 is a barium zinc stabilizer.

[0047] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. At the same time, the meaning of "and / or" appearing in the full text is that it includes three schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] The above components are all common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A method for preparing a chip cutting film, characterized in that: The preparation method comprises the following steps: S1. Put 100 parts of PVC resin powder, 30 parts of plasticizer, 2.2 parts of stabilizer, 0.07 parts of blue colorant, 0.04 parts of red colorant and 0.6 parts of processing aid into a blender by high-speed stirring and mix them evenly; The materials in S2 and S1 are then subjected to extrusion, refining, filtering, calendering, cooling, trimming, curling and other processes to obtain finished products.

2. The method for preparing a chip cutting film according to claim 1, characterized in that: The trimming device in step S2 comprises a workbench (2), the workbench (2) having a conveying roller (21) for conveying film materials and a first driving mechanism installed on the left and right sides of the workbench (2), a work frame (4) being slidably arranged on the first driving mechanism, two first grooves (41) being symmetrically provided on the work frame (4), a first mounting frame (42) being symmetrically arranged on the work frame (4), a partition plate (43) being provided at the center of the work frame (4), a first driving motor (44) being installed on the first mounting frame (42), a first screw rod (45) being transmission-connected to the output shaft of the first driving motor (44), first guide rails (46) being installed on both sides of the first mounting frame (42), first sliding seats (51) being slidably arranged on the two first guide rails (46), the first sliding seats (51) being connected to the first screw rod (45), a first mounting frame (42) having a bottom having a first sliding seat connected to the first screw rod (45), and a first sliding seat (51) being provided on the bottom of the first mounting frame (42). A through groove (411) connected to the groove (41), second guide rails (412) are installed on both sides of the through groove (411), a first sliding block (52) is provided at the bottom of the first sliding seat (51), the first sliding block (52) is slidably arranged on the second guide rail (412), a measuring piece for pointing to the width of the cutting film material is provided at the top of the first sliding block (52), a scale plate (54) is provided on one side of the first installation frame (42), and the measuring piece points to the scale plate (54); a lifting frame (55) is fixed at the bottom of the first sliding block (52), a first lifting motor (56) is installed at the center of the lifting frame (55), and a plurality of lifting rods (57) are also installed on the lifting frame (55), the lifting rods (57) and the first lifting motor (56) are commonly connected to a second mounting plate (58), and the bottom of the second mounting plate (58) includes a first positioning pressing assembly, a second positioning pressing assembly and a cutting knife assembly; The cutter assembly comprises a cutter frame (581), a second drive motor (582) and a rotating cutter (583); the cutter frame (581) is fixed to the bottom of the second mounting plate (58); the second drive motor (582) is installed on one side of the cutter frame (581); the output shaft of the second drive motor (582) is connected to the rotating cutter (583) for cutting the edges of the film material.

3. The method for preparing a chip cutting film according to claim 2, characterized in that: The first driving assembly comprises a third driving motor (31), a second mounting frame (32), a third guide rail (33), a second screw rod (34) and a second sliding block (35); the second mounting frame (32) is mounted on the front and rear sides of the workbench (2); the third driving motor (31) is mounted on one side of the second mounting frame (32); the second screw rod (34) is transmission-connected to the output shaft of the third driving motor (31); the third guide rail (33) is also mounted in the second mounting frame (32); the second sliding block (35) is slidably arranged on the third guide rail (33); the second sliding block (35) is connected to the second screw rod (34); and the working frame (4) is fixed on the second sliding block (35).

4. The method for preparing a chip cutting film according to claim 2, characterized in that: The measuring member comprises a measuring disk (531) and a measuring needle (532); the measuring disk (531) is fixed on the top of the first sliding block (52); an observation hole (533) is provided on the measuring disk (531); a measuring needle (532) is installed at the bottom of one end of the measuring disk (531); and the measuring needle (532) is aligned with a scale line on the scale plate (54).

5. The method for preparing a chip cutting film according to claim 2, characterized in that: The first pressing assembly includes a first fixed rod (61) located on both sides of the second driving motor (582), the first fixed rod (61) is fixed to the bottom of the second mounting plate (58), first connecting plates (62) are installed on both sides of the cutting frame (581), a second connecting plate (63) is installed on one side of the first connecting plate (62), and the second connecting plate (63) is also connected to the first fixed rod (61), the bottom of the first fixed rod (61) has a first pressing rod (611), the bottom of the cutting frame (581) has a second pressing rod (64), the first pressing rod (611) and the second pressing rod (64) are commonly connected to a first pressing plate (65), the first pressing plate (65) is located on the left side of the rotating cutting disk and rests against the top of the film material.

6. The method for preparing a chip cutting film according to claim 2, characterized in that: The second pressing assembly comprises a second fixing rod (71) fixed to the bottom of the second mounting plate (58); a third pressing rod (72) is fixed to the bottom of the second fixing rod (71); the third pressing rod (72) is fixedly connected to a second pressing plate (73); the second pressing plate (73) is located on the right side of the rotating cutting disc and rests against the top of the film material.

7. The method for preparing a chip cutting film according to claim 2, characterized in that: A second groove (74) is also formed at the bottom of the second mounting plate (58).

8. The method for preparing a chip cutting film according to claim 2, characterized in that: A control panel (8) is also installed on one side of the workbench (2).

9. The method for preparing a chip cutting film according to claim 1, characterized in that: The processing aid in step S1 is an acrylic polymer, and the stabilizer in step S1 is a barium zinc stabilizer.

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