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The press needs to use different meshes to complete different printing jobs.
Repeatable stretch net frame: The reproducible net frame provided by most manufacturers refers to a drum type net frame
Repetitive stretch net frame: The repetitive stretch net frame is surrounded by a roller bar with a mesh cloth attached to it.
Mesh is a pre-stretch type product, which is attached to the frame by special equipment. Electronic and special printing processes require the use of metal or polyester/metal hybrid screens. Under the premise of current heating, the mesh cloth can promote ink activity. Knowing the major differences between these types can greatly help your choice (you can choose the most appropriate type of frame based on the actual application). In the field of screen printing today, monofilament polyester screens have largely banned silk screens. If necessary, the operating staff can re-tighten loose mesh panels at any time. All mesh fabrics must have stretch functions that can withstand the action of rubber rollers and resist the corrosion of water and recycled chemicals. The mesh size is in the range of 40 to 400 (a measure of centimeters is used in many European measurement methods).
Some inks have certain characteristics that form a constraint on the number of meshes. Because loose meshes cause many problems during printing, printing, and reproduction, we do not recommend using such wood frames. On one side of the net cloth, usually marked with the number of silk screens, the thickness of the wire, and the measurement data of the net cloth
Mesh size: Mesh manufacturers usually indicate the number of meshes, thread thickness, and other specifications at the edge of the mesh.
Frame type
The frame has three main types: hard wood type, hard metal type and repetitive stretch type. Fabric presses can be printed with a mesh of 80 mesh or 110 mesh, and black or white paint can be printed on black fabrics.
Can withstand the pressure generated by the elongate mesh. In order to reach the precise scale, carefully measure the mesh size of the mesh after the ultimate stretch.
Determine the number of screen meshes: After the mesh stretches to the specified scale, the screen mesh number should be measured. With the advancement of screen mesh, the ink flow rate and deposition thickness will gradually decrease. As a result, if you need to repeat the process in the future, you can get a higher degree of print matching and get the same printing effect. Early wooden net frames used pin or groove manual fixing methods, but manual fixing could not fully stretch the net cloth. The screen is composed of a sturdy wood or metal frame and a thin wire braided net, in which the net structure is stretched (or otherwise fixed) on the four sides of the metal frame.
Wooden frame: Wooden frame is the most primitive frame, and it is also the most simple and inexpensive frame.
Premium mesh frames have the following features:
It has an elongated shape that fits into the clamping system of the printing system. When the non-porous material is painted for a long time, it is not necessary to use too much ink to cover the printing surface. Therefore, it is necessary to use a mesh whose mesh number is more than 300 in order to achieve a fine printing scale.
The mesh size is a term used to describe the number of meshes per inch of wire. The fabric printing process requires the use of a rough web so that the ink can flow more through the web. The fine printing process requires the use of denser meshes in order to accurately reflect the dansing on the template.
Mesh should stretch to its preset mesh size, and its mesh size can reach 10% deviation (this deviation is mainly caused by differences in production process and individual stretch parameters). Pottery printing requires that the glass frit coarse particles compensate for the ink through the mesh. In this case, a mesh with a mesh size of 110 to 255 is required. Metal frame sizes are mostly the same, but we can also produce different sizes of frame products according to the customer's special requirements.
The application of repetitive stretched frames eliminates the need for screen stretching equipment - such stretched equipment can only be purchased at the center of a large store or supplier's service. Today, mesh fabrics are woven from fine polyester raw materials (or metal raw materials for a particular purpose). Therefore, this kind of network frame has extremely strong application and high economic value.
Choosing the right screen frame and mesh for the screen printer is very pivotal for creating high-quality prints. This article will describe the author's views on different types of mesh frames, mesh parameters and performance criteria, and recommend some screen printing to the general readers. The details of the pretreatment and how to maintain the printing effect for a long time.
The name of the screen printing process originates from one of its major screens.
net
Woven screen printing meshes come in a variety of types and can meet detailed application and production requirements. In automated printing equipment or in other situations where strict quality control is required, people often use metal mesh frames for printing operations.
Initially, the screen printing process was made of silk, so this process was named "screen printing." The operator can tighten the mesh by rotating the roller bar and then lock the roller bar in the rotated position.
The structure should have waterproof and anti-fouling functions to ensure the stretch or adhesion effect of the mesh. In Greek, the term "silk" is the word "seri", so Europeans use the term "serigrafica (or serigraphy)" to refer to this process. In addition, individual printers or store owners can re-tighten the loose mesh frame, and it takes only a few minutes to regain a tight screen. UV inks require thinner ink deposits for curing, and such inks do not dry on the screen, so mesh screens with a mesh size of more than 305 should be used. Wooden net frames are still active in the garment industry and are mainly used for small family-scale production.
In the process of fixing the net cloth to the net frame, the operating staff should prepare two wrenches: one for rotating the entire side of the net frame, and the other for fixing the lock nut, so that the stretch level of the net frame is maintained at a specified scale. Above.
Analysis of the choice of netting mesh
Metal mesh frame: Compared with wood frame, aluminum mesh frame or steel mesh frame has more obvious advantages in the following aspects: anti-twist or arch deformation, water resistance, light weight and durability.