A manufacturing process for buffered acrylic tape

Abstract

The invention relates to the technical field of adhesive tapes, and discloses a manufacturing process of a buffered acrylic adhesive tape, wherein the manufacturing process of the adhesive tape comprises the following steps: step 1, preparing cellulose with a weight ratio of 5% of the weight of an adhesive, and adsorbing conductive metal ions on the cellulose to obtain metal cellulose; step 2, adding the metal cellulose to glycerol and breaking it up using a centrifugal device, obtaining metal cellulose filaments after separation, and draining the glycerol and drying for standby use; step 3, preparing an adhesive component; step 4, pouring the adhesive component into a container and activating it using ultrasound, and adding metal cellulose filaments at intervals; step 5, heating the mixed solution of step 4 to 50°C-80°C to further increase the activity, and using mechanical equipment to stir so that the metal cellulose filaments are integrated into the adhesive component to obtain an adhesive; step 6, applying the adhesive to the surface of a substrate by roller coating, and attaching a transparent release film and a grid release film on the surface, and finally using a winding device to roll up the tape.

Description

Technical Field

[0001] The invention relates to the technical field of adhesive tapes, in particular to a manufacturing process of a buffered acrylic adhesive tape. Background Art

[0002] Buffered acrylic tape is a material used in the electronics, optoelectronics and semiconductor industries. Its main function is to protect products from static electricity and mechanical damage during transportation and packaging. The acrylic adhesive used in this tape has good adhesion and peeling properties, and has certain high temperature resistance, weather resistance and moisture resistance. At the same time, the tape is also covered with a layer of conductive material to prevent the generation and accumulation of static electricity.

[0003] After searching the existing publication number CN 106189906 A, a method for manufacturing acrylic tape was found. 0.42 parts of micron-sized SiO2 powder, 0.26 parts of micron-sized Al2O3 powder and 1.8 parts of silane coupling agent were added to 12 parts of butanone for ultrasonic treatment to obtain a pre-dispersion liquid; 2.6 parts of nano-sized SiO2 powder, 1.6 parts of nano-sized Al2O3 powder and 0.65 parts of isocyanate were added to the pre-dispersion liquid for ultrasonic treatment to obtain a modulated pre-dispersion liquid; methyl methacrylate, ethyl acrylate and dimethyldiethoxysilane were added to toluene for mechanical stirring to obtain a polymer solution; the modulated pre-dispersion liquid and the polymer solution were mixed and rosin resin, terpene resin, azo compound and N-nitroso compound were added in sequence to obtain a matte acrylic adhesive mixture. The invention improves the surface roughness uniformity and bonding stability of the matte coating in contact with the release agent coating.

[0004] After actual testing, it was found that the prior art requires the addition of a large amount of conductive liquid and other metal components in the preparation of the conductive properties of the buffered acrylic tape to ensure that the tape can conduct static electricity. The preparation of the formula is extremely complicated, and the conductive liquid and the metal components may be unevenly dispersed, resulting in an unsatisfactory conductive effect. At the same time, during the actual pasting of the tape, bubbles may appear due to inaccurate positioning or improper operation by the operator, affecting the adhesion of the tape. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a manufacturing process for a buffered acrylic tape, which has the advantages of simple preparation of conductive components, continuous and smooth conductive performance of the tape, anti-static effect, and difficulty in generating bubbles during attachment, thereby solving the problems of the above-mentioned technologies.

[0006] To achieve the above object, the present invention provides the following technical solution: a manufacturing process of a buffer acrylic tape, wherein the tape is composed of a substrate and an adhesive, the tape is a pure black roll, the adhesive comprises an adhesive component and a conductive component, and the tape manufacturing comprises the following steps:

[0007] Step 1, preparing cellulose with a weight ratio of 5% of the weight of the adhesive, and adsorbing conductive metal ions on the cellulose to obtain metal cellulose;

[0008] Step 2: adding metal cellulose to glycerol and breaking it up using a centrifugal device to separate the metal cellulose filaments, and then draining the glycerol and drying them for later use;

[0009] Step 3, preparing an adhesive component; mixing a butyl acrylate polymer, an ethyl acrylate polymer and a propyl acrylate polymer to prepare an adhesive component for standby use;

[0010] Step 4: Pour the adhesive components into a container and activate them using ultrasound, and add metal cellulose filaments at intervals;

[0011] Step 5: heating the mixed solution of step 4 to 50°C-80°C to further increase the activity, and using mechanical equipment to stir the mixed solution to make the metal cellulose fibers blend into the adhesive component to obtain an adhesive;

[0012] Step 6: Apply the adhesive to the surface of the substrate by rolling, and stick a transparent release film and a grid release film on the surface, and finally roll up the tape with a winding device.

[0013] Preferably, the adhesive component further includes acrylic glue, glue curing agent, glue diluent, antistatic agent and tackifier.

[0014] Preferably, the transparent release film is passed through an oven and adhered to the surface of the substrate, and polyurethane rubber is also glued to the transparent release film and the surface of the substrate to serve as a support.

[0015] Preferably, the step 1 of adsorbing conductive metal ions on cellulose further comprises the following steps:

[0016] S2.1. Prepare a solution or suspension containing conductive metal ions;

[0017] S2.2, soaking the cellulose in a conductive ion solution or suspension, ensuring that the cellulose is completely in contact therewith;

[0018] S2.3, maintaining a contact time of 10-20 minutes to allow the conductive metal ions to be fully adsorbed on the cellulose;

[0019] S2.4, taking out the treated cellulose from the solution, and washing the cellulose to remove excess solution and impurities;

[0020] S2.5, drying the cellulose to obtain the final metal cellulose.

[0021] By adding cellulose as a conductive material, the conductivity of acrylic tape is significantly improved. The adsorption of conductive metal ions will cause cellulose to contain metal substances with good conductivity, thereby improving the conductivity of cellulose itself, and then improving the conductivity of the entire acrylic tape. Metal cellulose can be evenly dispersed in the cellulose matrix, making the distribution of conductive materials more uniform, which helps to improve the stability and consistency of conductive properties.

[0022] Preferably, the step 2 further comprises the following detailed steps:

[0023] S3.1. Add the prepared metal cellulose to glycerol and gently stir at room temperature to help dissolve evenly and ensure that the metal cellulose can be evenly dispersed in the glycerol;

[0024] S3.2, transferring the mixture to a centrifugal device and performing centrifugal separation;

[0025] S3.3, after centrifugation, metal cellulose filaments will be obtained at the bottom of the centrifugal device, and the metal cellulose filaments are taken out;

[0026] S3.4. Place the separated metal cellulose fibers in a ventilated place to allow them to drain naturally or use absorbent paper towels to remove excess glycerin from the surface;

[0027] S3.5. After the metal cellulose fibers have been drained, place them in a well-ventilated environment to dry, ensuring that the metal cellulose fibers are completely dry and there is no residual glycerin.

[0028] The addition of metal cellulose promotes the uniform distribution of conductive properties. Metal cellulose can effectively cover the entire material by interweaving with the matrix of acrylic tape, ensuring that the conductive properties remain consistent over the entire area and avoiding the problem of uneven conductivity. The application of metal cellulose can improve the conductive reliability of buffered acrylic tape. Compared with traditional conductive additives, metal cellulose can better integrate with the matrix to form a more solid structure, reduce resistance and contact problems, thereby improving the reliability of conductive properties. The addition of metal cellulose improves the durability of buffered acrylic tape. Metal cellulose has good corrosion resistance and wear resistance, and can maintain conductive properties for a long time without being easily damaged by the external environment.

[0029] Preferably, the rotation speed of the centrifugal device in S3.2 is 300 / prm-500 / prm, and the centrifugal time of the centrifugal device is 5min-10min.

[0030] Preferably, the step 4 further includes the following detailed steps:

[0031] S4.1. Prepare the container: Select a clean container that can withstand ultrasonic treatment and has sufficient mixing space and sealing to facilitate subsequent ultrasonic treatment and mixing operations;

[0032] S4.2. Pour the prepared adhesive components into the prepared container, using a flow addition method with a flow acceleration of 50 ml / min;

[0033] S4.3. Place an ultrasonic device in the container and start the device to perform ultrasonic treatment on the adhesive component;

[0034] S4.4. During the interval of ultrasonic treatment, add metal cellulose fibers to the adhesive component in the container.

[0035] Compared with the prior art, the present invention provides a manufacturing process for a buffer acrylic tape, which has the following beneficial effects:

[0036] 1. The present invention significantly improves the conductivity of the acrylic tape by adding cellulose as a conductive material. The adsorption of conductive metal ions causes the cellulose to contain metal substances with good conductivity, thereby improving the conductivity of the cellulose itself, and further improving the conductivity of the entire acrylic tape. Only adding metal cellulose as a conductive material without using other metal powders achieves the beneficial effect of simple preparation of the conductive component.

[0037] 2. The present invention promotes uniform distribution of conductive properties by adding metal cellulose. Metal cellulose can effectively cover the entire material by interweaving with the matrix of acrylic tape, ensuring that the conductive properties remain consistent over the entire area and avoiding the problem of uneven conductivity. The application of metal cellulose can improve the conductive reliability of the buffer acrylic tape. Compared with traditional conductive additives, metal cellulose can better integrate with the matrix to form a more solid structure, reduce resistance and contact problems, and thus improve the reliability of conductive properties. The addition of metal cellulose improves the durability of the buffer acrylic tape. Metal cellulose has good corrosion resistance and wear resistance, and can maintain conductive properties for a long time without being easily damaged by the external environment. Furthermore, the grid release film releases or disperses static electricity through the conductive grid to reduce static electricity accumulation and prevent static electricity generation. Static electricity is released on the conductive grid on the surface of the grid release film, reducing the accumulation of static electricity. These conductive grids can conduct static charge to the ground or other conductors to balance it. The grid structure on the grid release film can disperse the static charge over the entire surface to prevent static electricity from accumulating in local areas. Furthermore, the grid release film has a conductive grid structure, but its main material is usually an insulating material. The insulating material can effectively prevent the formation of static electricity and avoid the accumulation of charge, thereby achieving the beneficial effect of the tape's conductive properties being continuous and smooth while having an anti-static effect.

[0038] 3. The present invention has an exhaust function through the adhesive surface of the mesh release film, so it is not easy to generate bubbles when attached, achieving the beneficial effect of not easily generating bubbles when attached. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the process of the present invention; DETAILED DESCRIPTION

[0040] 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.

[0041] See also Figure 1 A manufacturing process of a buffer acrylic tape, wherein the tape is composed of a substrate and an adhesive, the tape is in a pure black roll, the adhesive comprises an adhesive component and a conductive component, and the tape manufacturing comprises the following steps:

[0042] Step 1, preparing cellulose with a weight ratio of 5% of the weight of the adhesive, and adsorbing conductive metal ions on the cellulose to obtain metal cellulose;

[0043] Step 2: adding metal cellulose to glycerol and breaking it up using a centrifugal device to separate the metal cellulose filaments, and then draining the glycerol and drying them for later use;

[0044] Step 3, preparing an adhesive component; mixing a butyl acrylate polymer, an ethyl acrylate polymer and a propyl acrylate polymer to prepare an adhesive component for standby use;

[0045] Step 4: Pour the adhesive components into a container and activate them using ultrasound, and add metal cellulose filaments at intervals;

[0046] Step 5: heating the mixed solution of step 4 to 50°C-80°C to further increase the activity, and using mechanical equipment to stir the mixed solution to make the metal cellulose fibers blend into the adhesive component to obtain an adhesive;

[0047] Step 6: Apply the adhesive to the surface of the substrate by rolling, and stick a transparent release film and a grid release film on the surface, and finally roll up the tape with a winding device.

[0048] Specifically, the glue filtration mesh number is 400 meshes, and the adhesive component also includes acrylic glue, glue curing agent, glue diluent, antistatic agent and tackifier.

[0049] Specifically, the transparent release film is passed through an oven and adhered to the surface of the substrate. The transparent release film and the surface of the substrate are also adhered with polyurethane rubber to serve as a support.

[0050] Specifically, the cellulose adsorption of conductive metal ions in step 1 further comprises the following steps:

[0051] S2.1. Prepare a solution or suspension containing conductive metal ions;

[0052] S2.2, soaking the cellulose in a conductive ion solution or suspension, ensuring that the cellulose is completely in contact therewith;

[0053] S2.3, maintaining a contact time of 10-20 minutes to allow the conductive metal ions to be fully adsorbed on the cellulose;

[0054] S2.4, taking out the treated cellulose from the solution, and washing the cellulose to remove excess solution and impurities;

[0055] S2.5, drying the cellulose to obtain the final metal cellulose.

[0056] By adding cellulose as a conductive material, the conductivity of acrylic tape is significantly improved. The adsorption of conductive metal ions will cause cellulose to contain metal substances with good conductivity, thereby improving the conductivity of cellulose itself, and then improving the conductivity of the entire acrylic tape. Metal cellulose can be evenly dispersed in the cellulose matrix, making the distribution of conductive materials more uniform, which helps to improve the stability and consistency of conductive properties.

[0057] Specifically, the step 2 also includes the following detailed steps:

[0058] S3.1. Add the prepared metal cellulose to glycerol and gently stir at room temperature to help dissolve evenly and ensure that the metal cellulose can be evenly dispersed in the glycerol;

[0059] S3.2, transferring the mixture to a centrifugal device and performing centrifugal separation;

[0060] S3.3, after centrifugation, metal cellulose filaments will be obtained at the bottom of the centrifugal device, and the metal cellulose filaments are taken out;

[0061] S3.4. Place the separated metal cellulose fibers in a ventilated place to allow them to drain naturally or use absorbent paper towels to remove excess glycerin from the surface;

[0062] S3.5. After the metal cellulose fibers have been drained, place them in a well-ventilated environment to dry, ensuring that the metal cellulose fibers are completely dry and there is no residual glycerin.

[0063] The addition of metal cellulose promotes the uniform distribution of conductive properties. Metal cellulose can effectively cover the entire material by interweaving with the matrix of acrylic tape, ensuring that the conductive properties remain consistent over the entire area and avoiding the problem of uneven conductivity. The application of metal cellulose can improve the conductive reliability of buffered acrylic tape. Compared with traditional conductive additives, metal cellulose can better integrate with the matrix to form a more solid structure, reduce resistance and contact problems, thereby improving the reliability of conductive properties. The addition of metal cellulose improves the durability of buffered acrylic tape. Metal cellulose has good corrosion resistance and wear resistance, and can maintain conductive properties for a long time without being easily damaged by the external environment.

[0064] Specifically, the rotation speed of the centrifugal device in S3.2 is 300 / prm-500 / prm, and the centrifugal time of the centrifugal device is 5min-10min.

[0065] Specifically, the step 4 also includes the following detailed steps:

[0066] S4.1. Prepare the container: Select a clean container that can withstand ultrasonic treatment and has sufficient mixing space and sealing to facilitate subsequent ultrasonic treatment and mixing operations;

[0067] S4.2. Pour the prepared adhesive components into the prepared container, using a flow addition method with a flow acceleration of 50 ml / min;

[0068] S4.3. Place an ultrasonic device in the container and start the device to perform ultrasonic treatment on the adhesive component;

[0069] S4.4. During the interval of ultrasonic treatment, add metal cellulose fibers to the adhesive component in the container.

[0070] Furthermore, in step S4.2, the prepared adhesive component is poured into a container by a flow-addition method, and metal cellulose is added in S4.4, which will help to evenly disperse the metal cellulose in the adhesive component and ensure the mixing uniformity during the preparation process. Ultrasonic treatment of the adhesive component is used in S4.3, which promotes the full mixing and reaction of the metal cellulose and the adhesive component through the mechanical action and heating effect of ultrasound, which is beneficial to enhance the combination of metal cellulose and other components and improve the quality, stability and performance.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A process for manufacturing a buffered acrylic tape, the tape comprising a substrate and an adhesive, characterized in that: The adhesive tape is in a pure black roll package, the adhesive comprises an adhesive component and a conductive component, and the manufacturing of the adhesive tape comprises the following steps: Step 1, preparing cellulose with a weight ratio of 5% of the weight of the adhesive, and adsorbing conductive metal ions on the cellulose to obtain metal cellulose; Step 2: adding metal cellulose to glycerol and breaking it up using a centrifugal device to separate the metal cellulose filaments, and then draining the glycerol and drying them for later use; Step 3, preparing an adhesive component; mixing a butyl acrylate polymer, an ethyl acrylate polymer and a propyl acrylate polymer to prepare an adhesive component for standby use; Step 4: Pour the adhesive components into a container and activate them using ultrasound, and add metal cellulose filaments at intervals; Step 5: heating the mixed solution of step 4 to 50°C-80°C to further increase the activity, and using mechanical equipment to stir the mixed solution to make the metal cellulose fibers blend into the adhesive component to obtain an adhesive; Step 6: Apply the adhesive to the surface of the substrate by rolling, and stick a transparent release film and a grid release film on the surface, and finally roll up the tape with a winding device.

2. A process for manufacturing a buffer acrylic tape according to claim 1, characterized in that: The adhesive component also includes acrylic glue, glue curing agent, glue diluent, antistatic agent and tackifier.

3. The manufacturing process of a buffer acrylic tape according to claim 1, characterized in that: The transparent release film is passed through an oven and adhered to the surface of the substrate. The transparent release film and the surface of the substrate are also adhered with polyurethane rubber to serve as a support.

4. The manufacturing process of a buffer acrylic tape according to claim 1, characterized in that: The step 1 in which cellulose absorbs conductive metal ions further comprises the following steps: S2.

1. Prepare a solution or suspension containing conductive metal ions; S2.2, soaking the cellulose in a conductive ion solution or suspension, ensuring that the cellulose is completely in contact therewith; S2.3, maintaining a contact time of 10-20 minutes to allow the conductive metal ions to be fully adsorbed on the cellulose; S2.4, taking out the treated cellulose from the solution, and washing the cellulose to remove excess solution and impurities; S2.5, drying the cellulose to obtain the final metal cellulose.

5. The manufacturing process of a buffer acrylic tape according to claim 1, characterized in that: The step 2 also includes the following detailed steps: S3.

1. Add the prepared metal cellulose to glycerol and gently stir at room temperature to help dissolve evenly and ensure that the metal cellulose can be evenly dispersed in the glycerol; S3.2, transferring the mixture to a centrifugal device and performing centrifugal separation; S3.3, after centrifugation, metal cellulose filaments will be obtained at the bottom of the centrifugal device, and the metal cellulose filaments are taken out; S3.

4. Place the separated metal cellulose fibers in a ventilated place to allow them to drain naturally or use absorbent paper towels to remove excess glycerin from the surface; S3.

5. After the metal cellulose fibers have been drained, place them in a well-ventilated environment to dry, ensuring that the metal cellulose fibers are completely dry and there is no residual glycerin.

6. A process for manufacturing a buffer acrylic tape according to claim 5, characterized in that: The rotation speed of the centrifugal device in S3.2 is 300 / prm-500 / prm, and the centrifugal time of the centrifugal device is 5min-10min.

7. The manufacturing process of a buffer acrylic tape according to claim 1, characterized in that: The step 4 also includes the following detailed steps: S4.

1. Prepare the container: Select a clean container that can withstand ultrasonic treatment and has sufficient mixing space and sealing to facilitate subsequent ultrasonic treatment and mixing operations; S4.

2. Pour the prepared adhesive components into the prepared container, using a flow addition method with a flow acceleration of 50 ml / min; S4.

3. Place an ultrasonic device in the container and start the device to perform ultrasonic treatment on the adhesive component; S4.

4. During the interval of ultrasonic treatment, add metal cellulose fibers to the adhesive component in the container.

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