As an important means of finishing after printing, the film has been widely used in recent years, and has driven the development of related materials production, equipment manufacturing, production management, and scientific research.
In order to ensure economic sustainable development, environmental management and environmental protection have attracted widespread attention, especially industrial enterprises, must be in strict accordance with the ISO-1400 environmental management international standards for clean production.
The new technology of modern film coating - the promotion of the precoating film dry compounding process, has solved the problems of the long-standing blistering, filming, curling and other quality problems of the traditional coated glue wet compounding process. It also avoids the pollution to the atmosphere and the health hazards to the operators during the traditional film production process, and eliminates potential fire hazards.
Technological innovation has promoted the application of high technology in the post-press field. From emulsion adhesives and their laminating machines to solvent-based adhesives and their laminating machines is an improvement. The non-polluting, reliable, and convenient hot-melt adhesives with pre-wax dry compounding have produced a new leap in film-covering technology and have increasingly demonstrated its superiority.
At present, the wet glue compounding process employs both solvent-based adhesives and emulsion-based adhesives; and the precoating film dry-coating process is also a melt-coating precoating film and a solvent-coated volatilized precoating film. Materials coexist.
To avoid weaknesses can promote technological progress; objective notarization can ensure the truth of science. In order to promote the rapid development of post-press processing, to meet the needs of prepress and post-press printing technology for post-press processing, and to narrow the gap with the world's military families, the process flow, production process and function of the film coating process are now being produced. The materials and characteristics, production quality and production cost classification are briefly compared and used for reference by peers.
First, the technological process compares the pre-coating dry composite process provinces and provinces Huaihuai Huai adjustment, coating, drying the three most prone to the problem of the process flow, to avoid the lamination film printed foaming and filming, curl quality accident And eliminate the source of pollution, damage to human health and fire.
1, stock preparation is a pre-film production preparation process. The use of ready-to-glue wet composite processes requires the preparation of BOPP film, adhesives (solvent adhesives or emulsion adhesives) and olefins (solvents or water) in the stock preparation process.
The use of pre-film dry-type composite process, in the preparation phase only with the preparation of molten pre-coated BOPP film or solvent evaporation pre-coated BOPP film.
2. Discharging For the wet glue compounding process, the purpose of material discharging is to adjust the hard bones of the BOPP film before the glue is applied. The process of the bulk material is: the BOPP film is passively rotated and conveyed on the material rack. , Through the glue coating mechanism, the drying mechanism, the flattening roll and the bow-shaped variable roll of the thermocompression bonding mechanism to level the full width surface of the BOPP film.
For the precoating dry composite process, the purpose of discharge is to advance and adjust the state of the surface of the precoating film before compounding.
The discharging process of the melted BOPP film is as follows: the BOPP film is passively rotated and conveyed on the discharge rack, and after passing through the flattening roll of the hot press-fitting mechanism, the full width of the BOPP film is leveled.
3, glue adjustment, glue coating and drying using glue that is wet composite process to be in accordance with the technical requirements before the film configuration according to the requirements of the appropriate concentration of glue, and then adjust the operation of the coating mechanism, forcing the film will be coated The thick and concentrated glue on the roller is “scratched†to complete the transfer of the glue from the film on the rubber roll. Afterwards, the solvent is dried in the adhesive as much as possible. Volatilize.
When reconstituting glue, generally 1 part of the concentrated adhesive should be added to 0.3-1 part of solvent (ene), and 1 part of emulsion adhesive should be added to 0.1-0.3 parts of water. (To be continued)
In order to ensure economic sustainable development, environmental management and environmental protection have attracted widespread attention, especially industrial enterprises, must be in strict accordance with the ISO-1400 environmental management international standards for clean production.
The new technology of modern film coating - the promotion of the precoating film dry compounding process, has solved the problems of the long-standing blistering, filming, curling and other quality problems of the traditional coated glue wet compounding process. It also avoids the pollution to the atmosphere and the health hazards to the operators during the traditional film production process, and eliminates potential fire hazards.
Technological innovation has promoted the application of high technology in the post-press field. From emulsion adhesives and their laminating machines to solvent-based adhesives and their laminating machines is an improvement. The non-polluting, reliable, and convenient hot-melt adhesives with pre-wax dry compounding have produced a new leap in film-covering technology and have increasingly demonstrated its superiority.
At present, the wet glue compounding process employs both solvent-based adhesives and emulsion-based adhesives; and the precoating film dry-coating process is also a melt-coating precoating film and a solvent-coated volatilized precoating film. Materials coexist.
To avoid weaknesses can promote technological progress; objective notarization can ensure the truth of science. In order to promote the rapid development of post-press processing, to meet the needs of prepress and post-press printing technology for post-press processing, and to narrow the gap with the world's military families, the process flow, production process and function of the film coating process are now being produced. The materials and characteristics, production quality and production cost classification are briefly compared and used for reference by peers.
First, the technological process compares the pre-coating dry composite process provinces and provinces Huaihuai Huai adjustment, coating, drying the three most prone to the problem of the process flow, to avoid the lamination film printed foaming and filming, curl quality accident And eliminate the source of pollution, damage to human health and fire.
1, stock preparation is a pre-film production preparation process. The use of ready-to-glue wet composite processes requires the preparation of BOPP film, adhesives (solvent adhesives or emulsion adhesives) and olefins (solvents or water) in the stock preparation process.
The use of pre-film dry-type composite process, in the preparation phase only with the preparation of molten pre-coated BOPP film or solvent evaporation pre-coated BOPP film.
2. Discharging For the wet glue compounding process, the purpose of material discharging is to adjust the hard bones of the BOPP film before the glue is applied. The process of the bulk material is: the BOPP film is passively rotated and conveyed on the material rack. , Through the glue coating mechanism, the drying mechanism, the flattening roll and the bow-shaped variable roll of the thermocompression bonding mechanism to level the full width surface of the BOPP film.
For the precoating dry composite process, the purpose of discharge is to advance and adjust the state of the surface of the precoating film before compounding.
The discharging process of the melted BOPP film is as follows: the BOPP film is passively rotated and conveyed on the discharge rack, and after passing through the flattening roll of the hot press-fitting mechanism, the full width of the BOPP film is leveled.
3, glue adjustment, glue coating and drying using glue that is wet composite process to be in accordance with the technical requirements before the film configuration according to the requirements of the appropriate concentration of glue, and then adjust the operation of the coating mechanism, forcing the film will be coated The thick and concentrated glue on the roller is “scratched†to complete the transfer of the glue from the film on the rubber roll. Afterwards, the solvent is dried in the adhesive as much as possible. Volatilize.
When reconstituting glue, generally 1 part of the concentrated adhesive should be added to 0.3-1 part of solvent (ene), and 1 part of emulsion adhesive should be added to 0.1-0.3 parts of water. (To be continued)
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