However, the commonly used tape film thickness is different, and the price per square meter of tape is also different. Of course, the thicker the film is, the more expensive it is, and the thickness of the whole tape will also increase, but the algorithm is the same.
1928 In St. Paul, Minnesota, USA, Richard Drew invented scotch tape. Tape can be divided into high-temperature tape, double-sided tape, insulating tape, special tape, pressure-sensitive tape and die-cutting tape according to their functions, and different functions are suitable for different industry needs.
Only by coating a layer of glue on the surface of the adhesive tape can the adhesive tape stick to the object. The earliest adhesives came from animals and plants. In the19th century, rubber was the main component of adhesives. In modern times, various polymers are widely used.
The main process of tape production: film blowing → gluing → rewinding → cutting.
Blowing film: plastic masterbatch is blown into plastic film by a film blowing machine, and the width is generally about1.3m. According to the use of the adhesive tape, different plastic particles are selected and some special additives are added.
Glue coating: after film blowing, add coating glue to the coating machine. In fact, this process is mainly based on the viscosity and use of the tape, and then the tape is coated.
Rewinding: Then we need to rewind this large roll of plastic film into a small roll of film by rewinding machine, which can be rewinded according to the length of tape we usually use.
Cutting: the rewinding film can be cut into the required width of the tape used at ordinary times with a slitting machine. The two processes that have the greatest influence on the production quality of adhesive tape are film blowing and coating, because these two processes are semi-finished products, while the subsequent rewinding and cutting have little influence on the adhesive tape.