Shijiazhuang Goodi Trading Company has always focused on the development and innovation of coating, slitting, rewinding, and packaging machines. For over 20 years, we have significantly improved the performance of tape coating machines, providing huge benefits to our customers.

Our tape coating machine has been widely used in various industries such as food, clothing, housing, transportation, packaging, optical displays, and has been sold to more than 50 countries worldwide.

According to different product requirements, not only can customization be made according to customer requirements, but professional design and planning are also included. Ensure the advantages of versatility and ease of operation. Improve production capacity and total value.

Coating machine introduction

Coating machines are mainly used for surface coating processes in producing films, paper, etc., coating a layer of special functional glue, coating, or ink on the rolled substrate, and rewinding after drying. The coating equipment adopts a special multifunctional coating head, which can realize various forms of surface coating production. The rewinding and unwinding adopt a full-speed automatic film splicing mechanism and the PLC program tension closed-loop automatic control. It is also called a coating laminating machine coating production line, etc.

Goodi is a professional coating and laminating machine manufacturer in China. We provide a full range of coating production lines, such as multifunctional coating machines for silicone oil paper, BOPP tape, self-adhesive paper label paper, double-sided tape, hot stamping foil, medicinal aluminum foil (PTP), high barrier film, reflective film, lithium battery film or special laminated materials. We provide water-based or solvent-based adhesive coating machines, hot melt adhesive coating machines, etc. Usually, all these coating and laminating machines are specially manufactured according to the customer's technical specifications. Therefore, you can invest in coating equipment at a reasonable price and reliable quality. Please tell us your budget and technical parameter requirements, and then we can make the best coating solution for you. Our engineers have accumulated rich experience, some of them have worked in this field for more than 30 years and are experts in the industry. We can bring better solutions for your coating production technology. Our team has a positive attitude and friendly cooperation. We always think from your perspective and bring more value to our buyers. We not only sell coating machines but also help you run your project successfully. Please contact us now, we are always ready to provide you with the best coating technology.

Coating process (scraper + wire rod)

The coating machine has two coating processes, wire rod and scraper. Scraper is a traditional coating process. Its advantages are: it can obtain higher smoothness and glossiness; its disadvantages are: it has higher requirements for the original film and the speed of glue coating is relatively slow. As a coating process that has just emerged in recent years, wire rod has the advantages of: low requirements for the original film, fast glue coating speed, and can adapt to high solid content coating; its disadvantages are: the adjustable range of coating amount is small, the metering rod is easy to break, and the glue quality requirements are high. Each process has its own shining points, and the two processes can only coexist, and neither of them can be eliminated.

Coating speed (process differences)

The production process of the coating machine is divided into wire rod process and scraper process. Generally speaking, the production speed of wire rod machine is faster than that of scraper machine. According to statistics, the current production speed of wire rod machines is 250-260 m/min, 280-290 m/min, and some can reach more than 300 m/min; while the production speed of scraper machines is 220-230 m/min, 180-190 m/min, 150 m/min, and even some old lines are around 100 m/min. Therefore, the production capacity of each coating machine is still quite different.

Specific steps of tape production

1. Add raw materials: The first thing to do in the tape production process is to add tape raw materials, such as acrylic acid.

2. Emulsification tank: Then add acrylic acid, a raw material for tape, to the emulsification tank for emulsification.

3. Reactor: After acrylic acid is added to the emulsification tank for emulsification, it is placed in the reaction pot for heating.

4. Glue: After the above tape production process steps, the finished glue is produced.

5. Coating machine: Put the newly made glue on the film for gluing.

6. Semi-finished products: The semi-finished products of tapes produced through these tape production processes - mother rolls.

7. Tube cutting machine: The newly produced mother roll of tape is cut by a tube cutting machine.

8. Slitting machine: After the mother roll of tape is successfully cut, a slitting machine is used to slit the tape production process.

9. Carton: After the mother roll of tape is cut and slit, it becomes the tape people see on the market, and now it can be packaged in cartons.

10. Tape: The packaged tape is placed in the warehouse. This is the last tape production process, and it can be called a finished tape at this time.

Daily maintenance of coating machine

1. Check the screws of each part of the packaging machine regularly to avoid looseness.

2. Pay attention to the waterproof, moisture-proof, anti-corrosion and rat-proof of the electrical parts of the coating machine. The inside of the electric control box and the wiring terminals should be kept clean to prevent electrical failure.

3. When the coating machine is stopped, the two heat-sealing rollers should be in the open position to prevent scalding of the packaging materials.

The cleaning and maintenance of the coating machine are as follows:

Cleaning of the coating knife head: Wipe with dry gauze after the equipment is heated. Roller cleaning: Wipe the stainless steel roller with clean dry gauze dipped in 75% alcohol. If glue is found on the surface, wipe it with dry gauze dipped in 1620 solvent/ethyl acetate solvent; the glue on the surface of the rubber roller must not be treated with organic solvents to avoid damaging the rubber roller. It should be removed with strong adhesive curing glue. Equipment outer surface; cleaning method: Wipe with clean dry gauze dipped in 75% alcohol. Batch cleaning: Cleaning of the hot melt adhesive coating machine glue box and hose (applicable to changing the glue model and coating method): After draining the original glue, add 2~3Kg of new glue, heat until completely melted and drain all, then add new glue, and after completely melting, drain at least 1Kg to start formal production.

Cleaning of the coating knife head (applicable to changing the glue model and coating method): After the equipment is heated, wipe it with dry gauze. Coating the roller at the composite position; wipe the surface dust with clean dry gauze; if glue is found on the surface, do not use organic solvents to treat it to avoid damaging the rubber roller, and use strong adhesive curing glue to remove it.

Cleaning of the corona device: After confirming that the power is turned off, wipe it with a clean dry gauze dipped in 75% alcohol. Hot melt adhesive coating machine non-fixed periodic cleaning: When the coating method and glue type and grade change, the coating head of the hot melt adhesive coating machine must be cleaned. When cleaning, the coating head must be removed before the glue solidifies, and the coating head must be wiped clean with dry gauze dipped in 1620 solvent. During the production process, the overflowing glue must be wiped off with a clean gauze when the equipment is shut down and restarted. Half-month cleaning Hot melt adhesive coating machine glue box filter cleaning. Hot melt adhesive coating machine coating head filter cleaning. If the production is stopped for more than one month, all coating equipment must be cleaned according to the above-mentioned daily, before and after batch change, half a month and non-fixed periodic cleaning content and requirements before it can be put into use; for the hot melt adhesive coating machine glue box, after emptying the original glue, about 30Kg of white mineral oil must be added to dissolve the residual glue. After emptying, about 30Kg of white mineral oil must be added to dissolve again, and it must be completely emptied and set aside.

The coating machine must be operated by a fixed person who is proficient in the startup and bag-making procedures, simple instrument debugging, parameter change, etc.; working procedures, operating modes, working status, common fault troubleshooting and handling; unqualified personnel are strictly prohibited from operating the coating machine computer instrument. Daily maintenance must ensure that the computer instrument box inside and outside is clean and dry; this will extend the service life of the coating machine and avoid unnecessary failures during work.