For many years, rotary gravure cylinders have been manufactured from steel or aluminum, with little change. The roller base of the gravure cylinder is also considered to be no problem.
In the winter of 1985, McGinley M. Luther of the Society of Gravure Printing Technology pointed out in a paper titled "Drum: The Big Dilemma of Gravure" that the gravure driving device, ink supply, direct digital imaging, laser imaging and Some of the technological advances made in engraving, etc., briefly mention gravure sleeves and rolled plates, and predict that engraveable or exposable polymer materials may replace copper.
The problem that must be solved At the time, Mr. Ludt realized that until 1985 the industry did not take any measures to improve the roller base of the drum to increase its cost-effectiveness. At that time, flexo technology had just begun to seize the dominant market that was considered a gravure printing technology. The gravure cylinder roll base is still the least problematic for most gravure printers today. At the same time, flexo printing continues to dominate the gravure printing market because flexo printing costs less than gravure and the quality is good.
One of the important issues we face today is to reduce the job replacement time of presses. One of the key steps is to reduce the weight of the gravure cylinder. The bulky rotogravure roller brought great inconvenience to the logistic management service work, which resulted in high storage costs and transportation costs. In addition, the bulky gravure cylinders increase the time, labour, and cost of replacing the job.
The current cost-effective gravure cylinder has been available. However, this type of gravure cylinder cannot be separated from the new auxiliary equipment, so that the light-weight, easy-to-carry telescopic cylinder becomes a common production tool, not a novelty device. Otherwise, it will be difficult to make continuous progress.
The new drums are not copper-engraved or chrome-plated engraving drums, but are rotating image carriers with specific job functions. The lightweight sleeve type roller can play a role, but it is not enough to change the competitive strength of the gravure printer. There are many things that need to be done.
Gravure printers, roller engraving and processing centers, printer manufacturers, and users of gravure and paper products should intensify their cooperation to seek new gravure equipment and gravure cylinders that are lighter and more efficient.
Although engineering polymers are widely used in military, aerospace, and automotive manufacturing, metal strength is still higher than plastic in most people; plastics are suitable for making toys, picnic spoons, and other common products, but not for To make a roller. Therefore, we decided to use the term engineering polymer instead of plastic when we described the new cylinder. Engineering polymer performance is comparable to metal.
The lightweight polymer rotary image cutting device (New Roller, Translator's Note) has been introduced to help reduce the time for job replacement, reduce the operating costs, and reduce freight and storage costs. This lightweight image carrier is particularly suitable for use. On sleeve type printers (eg shaftless printers). With a sleeve-type printer using a lightweight polymer image, a 38-inch roll can be replaced in less than five minutes, eliminating the need for special handling tools.
Related services The lightweight gravure cylinder produced by ROTAG has the following features:
* Single axis can fully meet professional standards for photocopying * Not subject to corrosion of commonly used packaging inks * Using electrostatically assisted ink transfer device * With required stretch, compressive strength * Can be re-engraved * Size can be changed * Can be repaired * Can be combined with existing metal drums * Install concentric measuring devices * Reduce weight by at least 50% compared to metal rollers
* Lower cost than metal rollers (without copper)
* Can be used on presses with the same or larger width* Air freight is relatively low ROTAG rollers are made of injection-hardened thermosetting engineering polymers and are plated and polished. The total number of ROTAG drums has reached tens of thousands. It is mounted on a gravure press with a width of 7.5-65 inches and a drum circumference of 10-36 inches. The substrate includes a 1/2 mil (1 mil = 0.001 inch) film and high wet strength cardboard. The printing presses included include Schiavi, Champlain, Uteco, Rotomec, DCM, Chestnut, Chambon, Andreotti, CMR, and other brands of presses. Chemical engraving is sometimes used to engrave the drum, and Helio, Ohio, and Daetwyler engraving systems are sometimes used.
The configuration requirements for each press can be met by the roller walk design. Some printers, such as DCM printers, have a sleeve cylinder with a straight hole. Such presses require the use of molded inserts. Other printers use cones more often to locate and transmit power. The above-mentioned rollers, originally made of steel, can now be molded using a reinforced engineering polymer. The outlook is very bright. (U.S.) Cherry Rain Adams
In the winter of 1985, McGinley M. Luther of the Society of Gravure Printing Technology pointed out in a paper titled "Drum: The Big Dilemma of Gravure" that the gravure driving device, ink supply, direct digital imaging, laser imaging and Some of the technological advances made in engraving, etc., briefly mention gravure sleeves and rolled plates, and predict that engraveable or exposable polymer materials may replace copper.
The problem that must be solved At the time, Mr. Ludt realized that until 1985 the industry did not take any measures to improve the roller base of the drum to increase its cost-effectiveness. At that time, flexo technology had just begun to seize the dominant market that was considered a gravure printing technology. The gravure cylinder roll base is still the least problematic for most gravure printers today. At the same time, flexo printing continues to dominate the gravure printing market because flexo printing costs less than gravure and the quality is good.
One of the important issues we face today is to reduce the job replacement time of presses. One of the key steps is to reduce the weight of the gravure cylinder. The bulky rotogravure roller brought great inconvenience to the logistic management service work, which resulted in high storage costs and transportation costs. In addition, the bulky gravure cylinders increase the time, labour, and cost of replacing the job.
The current cost-effective gravure cylinder has been available. However, this type of gravure cylinder cannot be separated from the new auxiliary equipment, so that the light-weight, easy-to-carry telescopic cylinder becomes a common production tool, not a novelty device. Otherwise, it will be difficult to make continuous progress.
The new drums are not copper-engraved or chrome-plated engraving drums, but are rotating image carriers with specific job functions. The lightweight sleeve type roller can play a role, but it is not enough to change the competitive strength of the gravure printer. There are many things that need to be done.
Gravure printers, roller engraving and processing centers, printer manufacturers, and users of gravure and paper products should intensify their cooperation to seek new gravure equipment and gravure cylinders that are lighter and more efficient.
Although engineering polymers are widely used in military, aerospace, and automotive manufacturing, metal strength is still higher than plastic in most people; plastics are suitable for making toys, picnic spoons, and other common products, but not for To make a roller. Therefore, we decided to use the term engineering polymer instead of plastic when we described the new cylinder. Engineering polymer performance is comparable to metal.
The lightweight polymer rotary image cutting device (New Roller, Translator's Note) has been introduced to help reduce the time for job replacement, reduce the operating costs, and reduce freight and storage costs. This lightweight image carrier is particularly suitable for use. On sleeve type printers (eg shaftless printers). With a sleeve-type printer using a lightweight polymer image, a 38-inch roll can be replaced in less than five minutes, eliminating the need for special handling tools.
Related services The lightweight gravure cylinder produced by ROTAG has the following features:
* Single axis can fully meet professional standards for photocopying * Not subject to corrosion of commonly used packaging inks * Using electrostatically assisted ink transfer device * With required stretch, compressive strength * Can be re-engraved * Size can be changed * Can be repaired * Can be combined with existing metal drums * Install concentric measuring devices * Reduce weight by at least 50% compared to metal rollers
* Lower cost than metal rollers (without copper)
* Can be used on presses with the same or larger width* Air freight is relatively low ROTAG rollers are made of injection-hardened thermosetting engineering polymers and are plated and polished. The total number of ROTAG drums has reached tens of thousands. It is mounted on a gravure press with a width of 7.5-65 inches and a drum circumference of 10-36 inches. The substrate includes a 1/2 mil (1 mil = 0.001 inch) film and high wet strength cardboard. The printing presses included include Schiavi, Champlain, Uteco, Rotomec, DCM, Chestnut, Chambon, Andreotti, CMR, and other brands of presses. Chemical engraving is sometimes used to engrave the drum, and Helio, Ohio, and Daetwyler engraving systems are sometimes used.
The configuration requirements for each press can be met by the roller walk design. Some printers, such as DCM printers, have a sleeve cylinder with a straight hole. Such presses require the use of molded inserts. Other printers use cones more often to locate and transmit power. The above-mentioned rollers, originally made of steel, can now be molded using a reinforced engineering polymer. The outlook is very bright. (U.S.) Cherry Rain Adams
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