图片名称

NEWS

Popular Articles

Contact Us

图片名称
图片名称

Service Hotline

13632675935

CRF

TEL：13632675935

E-mail：shaobo@sfi-crf.com

Address: 1303, Building 3, Manjinghua Science and Innovation Workshop, No.6 Songjiang Road, Songgang Street, Bao'an District, Shenzhen, China.

Application of on-line plasma cleaning machine in cleaning process

Application of on-line plasma cleaning machine in cleaning process

What are the advantages of plasma equipment compared with traditional processing technology? The efficiency link of plasma is gas-solid coherent chemical reaction, which does not consume water and chemical agents, and is environmentally friendly to the natural environment. In the whole process, the gas drying treatment method does not need the anticoagulant and water, which will hardly cause environmental problems, save energy and environmental protection, and save more costs. On-line plasma cleaning machine adopts automatic cleaning method, which is suitable for large production line, saves labor, reduces labor cost, and improves cleaning efficiency greatly, especially its advantages are obvious. With the development of the industry and consumer electronics market, electronic devices are getting thinner and thinner, and the volume is getting smaller. This market demand promotes the miniaturization of microelectronic packaging, and at the same time, it puts forward higher requirements for the reliability of packaging. High-quality packaging technology can extend the service life of products. The bonding gap, the low bonding strength of the lead wire, and the lamination or shedding of the welding ball in the process of wafer packaging have become important factors restricting the reliability of packaging. Therefore, it is necessary to effectively remove all kinds of dirt without damaging the surface properties and electrical properties of the material. There are two main cleaning methods that have been widely used: wet method and dry method. Considering environmental impact, raw material consumption and future development, wet cleaning has great limitations, and dry cleaning is obviously superior to wet cleaning. Among them, plasma cleaning develops rapidly and has obvious advantages. A plasma is an ionized gas. It is a collection of electrons, ions, atoms, molecules, or free radicals. In the process of cleaning, high-energy electrons will collide with gas molecules to make them dissociative or ionizing. Various particles generated will be used to bombate the cleaned surface or have chemical reactions with the cleaned surface to effectively remove various pollutants. At the same time, it can also improve the surface performance of the material itself, such as improving the wettability of the surface, improving the adhesion of the film, etc., which is of great significance in many applications. After plasma cleaning, the surface of the device is dried and no further treatment is required, which can improve the processing efficiency of the whole process line. It can prevent the operator from being hurt by harmful solvent. The plasma can be cleaned deep into the small holes and depressions inside the object, so the shape of the object to be cleaned does not need to be considered too much. It can also handle all kinds of materials, especially for high temperature and solvent resistant materials. All these advantages make plasma cleaning widely concerned.

MORE +
Whether the plasma cleaning machine can remove surface oil stains

Whether the plasma cleaning machine can remove surface oil stains

Plasma cleaning machine, surface modification, etching activation equipment widely used in plasma surface activation/cleaning; Plasma-treated bonding; Plasma etching/activation; Plasma degumming; Plasma coating (hydrophilic, hydrophobic); Enhanced bonding; Plasma-ashing, surface modification and other occasions, through plasma treatment, can improve the surface of the material wettability, so that a variety of materials can be coated, etching, printing and other operations, enhance the bond strength, while removing organic pollutants, oil or grease. In plasma, the active particles can effectively activate the dirt on the surface of the object to achieve the purpose of cleaning, that is, plasma cleaning. For the plasma cleaning machine, the plasma adsorption on the surface of the cleaning material, the reaction between the cleaning material and the plasma occurs, produce new molecules, so as to further promote the formation of new molecules into gaseous molecules, remove oil and other dirt on the sticky film. Plasma cleaning machine cleaning is different from traditional wet cleaning. Plasma cleaning is dry cleaning, the whole process of cleaning once, no residue. At the same time, it can improve the adhesion of the substrate surface membrane. The cleaning process is easy to control, easy to operate, highly efficient, and the cleaning time and gas (if necessary) can be controlled. According to our experience, to remove metal oil stains, we need to use the active group of plasma to react with oil stains to achieve the purpose of cleaning. We choose vacuum plasma cleaning machine as the test equipment. The method to judge the cleaning of metal oil stains is to drop a drop of distilled water into the metal surface with a pipette, observe and compare the shape and diffusion of water droplets on the metal surface before and after cleaning, and judge the cleaning result of oil stains. This method is fast and simple, and can be clearly judged by naked eyes. It is an effective means to judge the cleaning effect of metal oil stains. Tools/raw materials. 1. Clean the tweezers. 2. Put 50ml distilled water into a beaker. 3.100ul-500ul pipette. 4. Three heavy greasy metals, three light greasy metals, and three clean metals. Vacuum plasma cleaning machine. Methods/steps. Step 1: Use tweezers to remove a heavy, greasy metal and place it on a clean piece of white paper. Step 2: Adjust the pipette to a scale of 100UL, draw distilled water from the beaker, drop a drop of distilled water slowly on the heavy metal, and observe the shape and spread of the water droplets. Step 3: Take out the second heavy greasy metal with tweezers, put it on the appropriate tray, open the cavity door, put the tray and heavy greasy metal into the cavity of the vacuum plasma cleaning machine system (ensure that the placement position is horizontal and the metal is not easy to slide off), and close the cavity door. Step 4: Click the parameter setting of the touch screen to set the cleaning time. Press the start button. After about 30 seconds, the glow will start. Step 5: Wait for the end of cleaning time and pressure relief, open the door, take out the cleaned metal sample with tweezers, and put it on the white paper. Step 6: Use a pipette to slowly drop a drop of distilled water on the heavy greasy metal, and carefully observe the shape and spread of the water droplets. Finally, compared with the test results, the droplet on the metal surface before cleaning is circular, forming a droplet with a contact Angle of about 90 degrees, and the metal is hydrophobic before cleaning. After using the plasma cleaning machine, the pipette drops the water onto the metal surface, the water droplets immediately disperse, the contact Angle is significantly reduced, and the metal surface's spreading ability to water, namely wettability, is significantly improved, indicating that the metal hydrophilicity is improved, and the metal is cleaner after the plasma cleaning.

MORE +
Advantages and disadvantages of atmospheric plasma cleaning machine

Advantages and disadvantages of atmospheric plasma cleaning machine

Compare the advantages and disadvantages of atmospheric plasma cleaning machine, first of all under the contrast of the vacuum plasma cleaning machine, atmospheric plasma cleaning machine is the biggest advantage of the environment does not need low pressure, and can be made into a variety of online design, integrated in the customer's production line. Atmospheric pressure plasma cleaning machine advantages: Plasma activation can be carried out directly on the conveyor belt; Suitable for in-line processing without the use of vacuum technology; For example, a very thin layer of oxidation (passivation) can be produced when the aluminum is processed by plasma cleaning equipment. Local surface treatment may be performed (e.g. bonding slots); Objects can be processed directly on the conveyor belt; Disadvantages of atmospheric atmospheric plasma cleaning machine: Because of the principle of plasma excitation, the traces left by plasma treatment are very limited (about 8-12 mm). When operating with large objects, multiple nozzles or multiple nozzles types (such as a combination of direct and rotary) must be used, depending on customer requirements and production capacity. The plasma cleaning of easily oxidized objects is limited. For 3D products, which require complex multi-joint robot technology, the clearance penetration of plasma at high atmospheric pressure is limited to some extent. Atmospheric plasma scrubber is generally only suitable for planar treatment. In addition, the processing surface is single, if two surfaces are to be processed at the same time, the process is more complex. When processing, the object must be positioned on the conveyor belt very precisely. The nozzle movement trajectory of atmospheric plasma cleaning machine can be set. However, the object to be processed must be fixed on the moving platform, or it can be determined according to the requirements of customers.

MORE +
Selection Guide of vacuum plasma cleaning machine

Selection Guide of vacuum plasma cleaning machine

The plasma cleaning technology, which originated in the early 20th century, has been widely used with the rapid development of high and new technology industry, and has occupied a key position in many high and new technology fields. Plasma has a great influence on the industrial economy and human civilization, and has been the first to promote the development of the electronic information industry, especially the semiconductor and optoelectronic industries. Since plasma cleaning machine is used more and more in more and more industries, how to choose a suitable plasma cleaning machine has become a concern of people, today we will talk about how to choose a plasma vacuum plasma cleaning machine. In the choice of plasma plasma cleaner, we mainly consider the following aspects. The model of plasma cleaning machine is firstly determined by the cavity size. The cavity size is mainly considered from the following two aspects. 1. Workpiece size: In general, the classification of vacuum plasma cleaning machine is mainly according to the cavity size and cavity material to divide, the choice of cavity size should first consider is the size of the workpiece, that is to say, at least to be able to put the workpiece down, if the workpiece even put can not put down, then consider other factors also does not have much meaning. 2. Production Capacity: For products with high production capacity requirements, the cavity size must be selected according to the production capacity. The larger the cavity size is, the more products will be processed at one time. If the production capacity requirements are not high, the workpiece size will be given priority. When the workpiece can be put down, we can calculate the appropriate cavity size according to its production capacity. The second question we need to consider is what frequency to choose for the plasma cleaner. Frequency selection: The frequencies commonly used today are 40KHz and 13.56MHz and 20Mhz. The self-bias voltage of 40kHz is about 1000V, that of 13.56mhz is about 250V, and that of 20MHz is even lower. These three excitation frequencies have different mechanisms. The reaction of 40kHz is physical reaction, the reaction of 13.56mhz is both physical reaction and chemical reaction, and the reaction of 20MHz is physical reaction but the main reaction is chemical reaction. Cavity material selection: Now commonly used cavity materials have the following: quartz cavity, stainless steel cavity, aluminum cavity, the three cavities have their own advantages, quartz cavity temperature is low, and is not easy to react. Advantages of aluminum profile: 1, aluminum profile low density, high strength, better than steel, with better mechanical processing performance. Aluminum has good conductivity, heat conduction and corrosion resistance. The compatibility of the material to the chemical reaction is good, not easy to produce metal pollution, will not produce pollution. Vacuum pump selection: In the end is the choice of domestic, or imported, dry pump or oil pump, single stage pump, or bipolar pump, each vacuum pump selection can be based on the actual needs of customers, here will not be repeated. Gas path selection: General vacuum plasma cleaning machine is a two-channel gas, but this can not meet all the processing requirements, if more reaction gas is needed, the airway should be appropriately increased, this is also according to the actual needs of users, choose multi-channel gas.

MORE +
Improvement of plasma treatment technology and bonding coating performance

Improvement of plasma treatment technology and bonding coating performance

The barrier coating can be used on the inside and outside of the package, but many factors need to be considered in the specific choice of which method, plasma treatment technology is an effective method in this application. The permeability of the gas in different parts of the PET container is also different due to the biaxial orientation of the molecules inside the plastic. The outer coating is easy to cause mechanical damage. But in order to improve the scratch resistance, secondary coating process can be used for treatment. The advantage of inner coating is that it can prevent the change of packaging bottle material from having an impact on the food performance, but the inner layer is in direct contact with the food, so the interaction between the two must be considered. The coating on the inside of the filling bottle is subject to intense cleaning and may fall off during cleaning. In order to prevent fracturing of the bottle body, the outer space of the bottle body needs to be vacuumed when the vacuum coating system works. In addition to improving the mechanical and optical properties of the polymer, it is necessary to ensure that the polymer has good bonding properties, so plasma surface treatment is needed. The substrate surface condition before coating treatment is an important factor to determine the performance of vacuum deposition barrier coating. Many common polymers have low surface energy, so it is difficult to get a good barrier layer by coating treatment. The surface of the material can be treated by plasma treatment with high-energy ions, free radicals, electrons and neutral particles, which can make the surface modified molecules reach a certain depth. In the process of plasma surface treatment modification, not only dirt (such as organic matter) can be removed, but also some functional polar groups can be generated, which promote the bonding and generate the compensation effect through crosslinking. Corona discharge is often used in the process of winding coating, which is efficient and economical for many polymers. According to the practical application, the newly developed surface treatment technology can be used to ionize the mixed gas in the rf plant, combine with the DC magnetron sputtering technology, and use the plasma treatment technology to oxidize, nitride, ammoniate or hydrolyze the surface, so as to enhance the surface energy of the material and improve its binding performance. In addition, the surface morphology of selected materials also has a great influence on the performance of the barrier layer. For example, a smooth, flat base is easier to coat with high-quality septal faults.

MORE +
Plasma surface activator

Plasma surface activator

The surface of the material must have good wettability, so that it can be well bonded with the adhesive material in painting, bonding, printing or pressure welding. Not only does dirt containing oil and grease prevent wetting, but the surfaces of many materials cannot be completely wetted by various fluids, adhesives, and coatings. After the liquid drops, even after curing and drying, it cannot be well attached to the surface. The surface can be activated and treated with the plasma surface activator. This is because the substrate has a low surface energy. Normally, materials with a low surface energy are those with a high surface energy that can be wetted, but conversely, materials with a high surface energy are those that cannot be wetted. The surface energy of the liquid added, also known as surface tension, must in any case be lower than the surface energy of the substrate. Most plastics have a very low surface energy, and because the surface is nonpolar, liquid molecules cannot find connections where they can aggregate and therefore cannot be wetted by adhesives and coatings. The surface energy of the material surface is increased so that the surface is activated and the activated surface establishes a gathering point for the added liquid. Chemical primers and liquid adhesion promoters can generally be used to activate the material surface. But the treatment is often corrosive and harmful to the environment. On the one hand, adequate ventilation must be carried out before follow-up processing; on the other hand, activation state cannot be maintained for a long time. Nonpolar materials such as polyolefin cannot be fully activated by chemical primers. In addition, it can be activated in the arc corona. This is a form of atmospheric pressure plasma surface activated machine treatment, but only for flat or convex surfaces, where an arc is introduced. For atmospheric plasma activation cleaning machine, arc plasma will be ejected through the nozzle, so the surface of complex parts can also be activated. When activated in an air or oxygen plasma, the nonpolar hydrogen bonds of plastic polymers can be replaced by oxygen bonds. It can provide free valence electrons to bond with liquid molecules, thus improving the surface polarity. "Non-viscous" plastics, such as polyformaldehyde, polyethylene and polypropylene, can also have good adhesion and sprayability when activated by plasma at low or atmospheric pressure. The required surface energy can be adjusted very precisely, which also prevents over-activation, which can lead to etching. In a low pressure plasma, gases other than air and oxygen can be used, and these gases must be able to adsorb nitrogen (N2), amine (NHx), or carbonyl (-COOh) at the position of oxygen as the reaction group. The surface of the plastic remains active for 24 hours. However, follow-up treatment should be carried out as soon as possible, because with aging, new dirt will be absorbed. Adhesion of PTFE can also be achieved by plasma treatment, however it is not activated but etched. Metals, ceramics and glass usually have higher surface energy than plastics. If they need to be bonded or printed, it is advantageous to use plasma-surface activators for activation. The surface tension of the solder alloy is very high, however, some of it will still come off the metal surface. Therefore, plasma activation can improve the wettability during the welding process. The activation of the metal is mostly short and the welding must be carried out immediately.

MORE +
< 1...789...46 > proceed page
图片名称

CRF

National Service Hotline

136 3267 5935

Contact Email

shaobo@sfi-crf.com

Address:1303, Building 3, Manjinghua Science and Innovation Workshop, No.6 Songjiang Road, Songgang Street, Bao'an District, Shenzhen, China.

图片名称

Add WeChat
Get related information

Links

Apply to exchange friend links

Copyright © Shenzhen Chengfeng Smart Co.

京ICP备10002622号-38

粤公网安备 44030602005200号

图片名称

Cheng Feng Zhi Zuang a focus on plasma research and development for 20 years

We

The services of

Inquire for free sample testing

1-to-1 program customization

24-hour online after-sales service

Source manufacturer

Get the program
%{tishi_zhanwei}%
图片名称

Scan the code for information

诚峰智造