Magnesium Die Cut Printing Plates typically cost between $50 – $200 each, depending on the size. Photopolymer Plates cost between $35 – $75 per plate, depending on the size. They are less durable, but still very effective depending on your specific project.
What are letterpress plates made of?
The polymer plate is made of a light-sensitive, water-soluble plastic with a clear backing. The portions of the plate that are exposed through the clear parts of the film hardens, and what is not washes away. What remains is a raised surface in the shape of the design.
What is a photopolymer plate?
Photopolymer is photosensitive material in sheet form that is exposed to UV lights through a negative film. The light shines through the clear sections of the film and hardens the polymer. The plate is washed out with water. The plate is dried and exposed to UV one more time to complete the process.
How does letterpress printing work?
letterpress printing, also called Relief Printing, or Typographic Printing, in commercial printing, process by which many copies of an image are produced by repeated direct impression of an inked, raised surface against sheets or a continuous roll of paper.
How do you expose a photopolymer?
Photopolymer plates have a light-sensitive surface on either plastic backing or metal backing. A film negative is placed over the plate surface, secured with Kreene or a glass covering, and exposed to ultraviolet light. Where the light hits the plate, the plate is exposed and hardened.
What is photopolymer plate made of?
Simply put, a photopolymer plate is a sheet of polymer with one side that is light sensitive. The digitally created design is transferred to a photo negative that is placed on top of the sheet of polymer. It is then exposed to light in a controlled exposing unit.
How do you cut photopolymer plates?
Steel-backed photopolymer plates are not simple to cut. For the cleanest cut, we recommend using a metal shear or heavy-duty trimmer. You can also use tin snips, though you may end up with kinks in your plate, as tin snips won’t cut as cleanly.
What is liquid photopolymer?
Photopolymers come in the form of a liquid that solidifies (polymerises) within seconds when exposed to UV light of a specific wavelength. The hardness of the cured polymer depends on the chemistry and can range from soft rubber-like to hard plastic.
What is photopolymer in 3D printing?
Photopolymerization is the curing process that’s characterized by the use of ultraviolet (UV) light. In 3D printing, it’s used to cure the deposited material. When exposed to UV light, the deposited material cures. Rather, this curing process is used exclusively for photopolymer materials.
What are the different types of PhotoPolymer Printing plates?
The processes in which photopolymer plates are used to carry ink and transfer it to the substrate are lithography, flexography, letterpress and gravure. Although most printing plates are sold as solid plates, liquid photopolymers are also available to make flexographic and letterpress printing plates.
What is the difference between diazo and photopolymer-based litho plates?
Photopolymer-based litho plates mainly compete with diazo plates. In letterpress plates, the face of image elements is raised above open areas. Here photopolymer plates have replaced stereotypes and metal plates. On dry offset plates, also called letterset plates, an intermediate blanket cylinder is used to transfer the image to the substrate.
What is the difference between dry offset and letterpress plates?
In letterpress plates, the face of image elements is raised above open areas. Here photopolymer plates have replaced stereotypes and metal plates. On dry offset plates, also called letterset plates, an intermediate blanket cylinder is used to transfer the image to the substrate.
What is the difference between solid and liquid photopolymers?
Although most printing plates are sold as solid plates, liquid photopolymers are also available to make flexographic and letterpress printing plates. Lithographic plates are planographic plates which are also known as offset plates. Photopolymer-based litho plates mainly compete with diazo plates.
