Many producers may face a problem: how to have screen printing ink components assembly on the product?Than traditional way is to use screw or rivet, but it's in today's beautiful and efficiency of be particular about industry market, seems to be hold, so some manufacturers will use double-sided adhesive tape, it left in addition to the screw hole inconvenience, but there have been some unnecessary loss of adhesive tape, especially applied in parts a bit through the window;Then, emerging a screen printing glue on the market, not only makes up for the deficiency of the screw and tape, can help manufacturers to reduce production costs.Now most of the screen printing signs or panel, all in acrylic, plastic, such as pet, PVC, ABS, PC film is given priority to.Use glue to paste this kind of screen printing plastic, must choose no corrosive glue, so as not to damage the plastic surface erosion or screen printing inks, water-based glue is the best choice.Water-based glue has a benefit, is that it does not contain organic solution, and will not release harmful gases, and does not burn, is not in danger of fire and other environmental damage, and operator and the ISO14000 environmental protection industrial standard today.Convenient and safe in storage.
The following is the use of screen printing glue technology, selection of glue, printing, silk screen and glue thickness as far as the design, the glue dry.
Using the principle of screen printing glue is very simple, just like silk screen printing ink, screen printing glue through the silk screen printing technology, will glue accurately coated on the substrate to joint, after waiting for glue to dry up, will produce a layer of dry film like tape, after can be real-time joint material end to the other side, or mounted on a layer of the debonding paper, in order to use in the future.
Now most of the screen printing signs or panel, with plastic, such as pet, PVC, ABS, PC film is given priority to.Use glue to paste this kind of screen printing plastic, must choose no corrosive glue, so as not to damage the plastic surface erosion or screen printing inks, water-based glue is the best choice.Water-based glue has a benefit, is that it does not contain organic solution, and will not release harmful gases, and does not burn, is not in danger of fire and other environmental damage, and operator and the ISO14000 environmental protection industrial standard today.Convenient and safe in storage.
The position of the screen printing glue coating greatly depends on the screen and components selection and pattern design.Current vendors are usually use polyester or nylon net yarn, take its economy and high resistance to water, also have the manufacturer USES the stainless steel net yarn, in order to obtain a precise, uniform, and the effect of high stability.
The thickness of the silk screen after the glue dried up and can also according to choose the coating area respectively gauze type and mesh.
In general, after the glue dried up half of the thickness is about when wet.Now most of the printing factory to choose # # 23 to 39 (cm) or 60-100 mesh (inches), but if you want to achieve more accurate and clear pattern of the printing effect, you can choose a higher number of mesh.However, high density of mesh, printed by the glue thickness is relatively thin.As for the thickness of the glue in the surface roughness of substrate are thick, smooth surface of the substrate can make glue thin.Generally, the thickness of the screen printing glue will be affected by the following factors:
（1) silk screen mesh (2) the thickness of the sealing retinal/plasma (3) the design of the printing design 4. Glue the solid content of 5. Glue bonding degree
6. The speed of screen printing 7. 8. Glue scrape Angle glue scrape the hardness of 9. The surface of the substrate
General printing design available flooded immersion (commonly known as the earth) printing, is printing the pattern on the substrate.If you want to print design is more complex, or the seal glue to thicker, we can use linear (commonly known as a zebra crossing) or dot (commonly known as a checkered) printing.
Of water-based screen printing glue dry is influenced by temperature increase and accelerate, SP7533 screen printing glue, for example, if you use 100 # steel net, drying time at room temperature for about 30 minutes, about 15 minutes under 50 ℃, screen printing, also can use infrared lamp or the glue dries up with hot air conveyor belt;The dry speed also have deviation due to different substrate.
The easiest way to identify whether the screen printing glue dries up, from the color change, screen printing after the glue dry film color will become transparent.
The position of the screen printing glue coating greatly depends on the screen and components selection and pattern design.Current vendors are usually use polyester or nylon net yarn, take its economy and high resistance to water, are the manufacturer of stainless steel net yarn, in order to obtain a precise, uniform, and the effect of high stability.
In use process with plug mesh or wire drawing phenomenon, can add a little specific diluent.
Screen printing after the drying time and the coating thickness is associated with the outside temperature, room temperature dry naturally, 30 to 45 minutes, or with 50-70 ℃ temperature bake for about 10 minutes, stay not completely dry when apply from type paper on standby.
In general, after the glue dried up half of the thickness is about when wet.However, high density of mesh, printed by the glue thickness is relatively thin.As for the thickness of the glue in the surface roughness of substrate are thick, smooth surface of the substrate can make glue thin.Shenzhen printing hint, generally, the thickness of the screen printing glue will be affected by the following factors:
Screen mesh, the thickness of the sealing retinal/pulp, printing design in the design, the solid content of glue, glue bonding degree, the speed of screen printing, plastic scraping Angle, rubber hardness, the surface of the substrate.General printing patterns available flooded immersion type printing, is printing the pattern on the substrate.If you want to print design is more complex, or the seal glue to thicker, we can use linear or dot printing.