We usually say that packaging printing, including color box printing, carton printing, label printing, bag printing, bottle printing, different products have the most suitable printing method. Flexographic, offset, gravure and screen printing are among the world's four most popular printing methods, each with its own characteristics. Flexo printing has evolved from letterpress printing, a direct printing method known as flexographic printing due to the use of elastic, raised image plates. The flexographic plate is glued to the plate cylinder and the plate is supplied by an engraved metal anilox roll. Offset printing is a kind of lithography. It is very simple to say that offset printing is the printing method of transferring the graphic on the printing plate to the printing substrate by means of rubber (blank), that is, there are three rollers (printing plate, blanket, embossing). The lithographic method is called offset printing in the south of China. The gravure printing ink is full and full of three-dimensional, the graphic has a convexity, and the layers are rich, the lines are clear, the high quality printing plate has a long service life, and is suitable for mass printing. Gravure can print extremely thin materials such as plastic films.

The foam tape used in this process has excellent sealing performance, which can effectively avoid gas release and atomization to a certain extent. The foam tape has excellent anti-compression deformation ability, and the product has persistent elasticity, which can effectively ensure that parts get its long-term shock protection. With a certain degree of flame retardant foam tape, Foam Acrylic Adhesive Tape with Company Logo when used will not contain toxic substances, no residue, will not pollute the equipment, will not corrode metal, the product can be effectively used in a variety of temperatures, ranging from negative degrees Celsius to can be used. The surface of foam tape will have good infiltration when running, and it is very easy to adhere in the process of use, easy to produce, easy to cut, the whole product has a long viscosity, long peel time, strong initial adhesion, good corrosion resistance. Before pasting,Good Sealing Yellowish Stationery Tape foam tape should effectively remove sticky oil stains and dirt from the surface of the object and keep it dry. Do not paste it when the wall sounds very wet, such as pasting lens. It is recommended to clean the adhesive surface with alcohol. Foam tape to paste in its working temperature is below 10 ℃, otherwise can use hair dryer will appropriate heating tape paste paste surface, pressure sensitive adhesive tape in the paste after 24 hours to play the best effect, and paste the tape as compac

LLDPE stretch wrap production Stretch film is a rubber-like good elasticity and puncture resistance at room temperature, stretching ratio up to 200% -300%, and has a large retractability, long-lasting tension, single or double-sided Special film with self-adhesion. At present, the stretch film is mainly used for tray type transport packaging, bulk packaging for bulky or all kinds of loose articles, as well as storage and fresh packaging for various types of articles. This project was funded by China Petroleum & Chemical Corporation. LLDPE stretch film production equipment The Institute of Plastics Machinery and Plastics Engineering of Beijing University of Chemical Technology can provide users with a complete set of production equipment and software technology for linear low-density polyethylene stretch film in a turnkey manner. Production equipment is manufactured by fixed-point manufacturers. With an annual output of 400 tons of stretch film production line, the main equipment for the production line is high-speed mixer, compound extrusion blown film unit, film slitting machine and so on. Film blowing machine covers an area of 90 square meters, height 8.5 meters, total distribution 90kW. The main technical indicators of the production line of stretch wrap film

Stretch wrapping film knowledge you want to know Using the wrapping film for product packaging, the price of plastic packaging film can effectively reduce the cost of use. stretch wrap 18 x 1500 The wrapping film wrapped with plastic is only about 15% of the original wooden box packaging, about 35% of the heat shrinkable film, and about 50% of the carton packaging. . At the same time, it can reduce the labor intensity of workers, improve packaging efficiency and packaging grade. Stretch film is divided into mechanical film and artificial film. The stretched form of plastic packaging film of tray mechanical packaging has direct stretching (also called flat stretching or plastic packaging film resistance stretching) and pre-stretching. 1. The stretched film shrinks too much during the stretching process and does not reach the required width of the product; 2. The stretched film is too hot to retract during the secondary compounding process, which exceeds the standard requirements and does not reach the required width of the product. The material of the stretched film is an amorphous polymer which, when subjected to a tensile force greater than the yield strength in a certain temperature range, produces plastic elongation deformation, and polymer structural units (segments, macromolecules and crystallites) during the deformation process. Orientation begins due to stretching. As the degree of orientation increases, the force between the macromolecules increases, causing the viscosity of the polymer to increase and tend to harden, and the deformation tends to be stable and no longer develops. This phenomenon is called "stress hardening".