Silk screen printing in the special screen production skills
In industrial applications, silk screen printing plant often face some unusual request, the surface of the peculiar shape, size, fiber and material combinations, etc., and this is only screen printing processing factory of a small part of the test.Screen printing will become the preferred way to industrial application, it depends on whether it can meet these requirements, it will bring considerable profits for manufacturers.
In industrial applications is the most difficult to printing the calendar is not nameplate, oven panel or batch production of membrane switch, but the control panel and box.But flat metal parts, control panel and other heavy industry component functionality is adornment sex is more outstanding, pattern is also relatively simple, usually 1 ~ 2 color trademark structure, almost all of this kind of products are made by spraying metal lighting or sandblasting processing.What is really unusual and challenge screen printing calendar?Should be in bolts, insert, skylight, protrusions, bolt first bulge on the surface of printing image.
Traditional printing methods can meet the printing requirements, these products but improved screen printing technology can effectively solve these problems.Typically, warning signs in industrial equipment, the printing way has 3 kinds: pad printing, stickup ceramic decal paper or silk screen printing directly.Inkjet printing, computer imaging, etching washing can also be considered, but it is not wise.
Pad printing technology
For irregular surface, first consider pad printing printing chamber of commerce.However, in most cases, the pad printing is not a good solution.Although the pad printing is suitable for surface printing, but it requires that the substrates surface must be flat and concave and convex surface, so for what we call the industrial supplies, pad printing is not applicable.Moreover, pad printing printing format and quantity can meet the request of printed matter.
In version of the pad printing cost is another issue, wire mesh can be preserved for a long time and use again, but the pad printing plate using period is only about 12 months.In general, pad printing is suitable for printing flat concave and convex surface only, and not suitable for printing forms, buttons, switches, etc., so, for we discussed here is not suitable for industrial application.
Ceramic decal
Printers often choose ceramic decal paper to complete the questions that have no good solution about print production.For special on the surface of substrates, often on a piece of ceramic decal paper die cutting holes, to give up on the surface of the special location, or use more than small ceramic decal paper to avoid the special surface.
Screen printing, die cutting, and high quality of decals for this small print runs of the product, the cost is a kind of waste.Even using digital printing, die cutting equipment, the cost is considerable, and unable to ensure the quality.In addition, ceramic decals, once on the console or instrument is usually sealed, which makes ceramic decals on the adjustable is limited.Because in the use of ceramic decal paper, no matter how you use your glue must use rivet fixed equipment.On the other hand, direct printing label, no this concern.
Silk screen printing
Silk screen printing, it seems that is not suitable for this kind of work.Because the screen will be substrates convex surface of the puncture, even if is not sharp, convex surface screen with touch screen will appear when slack or stretch distorts the graphic.The problem is that how to overcome this problem.
Making the right screen is the key to solve this problem.Method is a place on the screen corresponding leave empty, make the screen and good contact with substrates when printing.But such modifications will make printing process manual production, resulting in the quality of printing image and size changes, therefore, printing and quantity of these products is less than 1000 pieces, even less than 100.
Printing equipment
As mentioned earlier, when the manual screen printing is used to product the adornment of the process, you need to specification of printing equipment, mainly to follow the following requirements:
1.Accurate positioning;
2.To ensure that the network version of the stability of the fixed on screen system;
3.To ensure that the network version of the lifting gear lifting position precision;
4.Printing machine system can accept device equipped with different rules.
In most of the printing, printing of these parameters are in accordance with the habit custom scraping blade.
A printing unit when equipped with one or more of the scraping blade.The scraper requires proper handle, moderate hardness and scraper blade.If you want to use soft scraper, such as printing wrinkled surface), will choose rigid support plate to prevent blade bending is too large.