Bottle cap graphic design and printing points analysis (in)

4, the template of homemade

The process selects or combines the use of plate-making glues depending on the fineness of the text pattern and the color registration. The following is a description of the processing steps:

1 steel plate grinding: Its purpose is to use physical and chemical methods, remove the oil on the board surface, in order to improve its suction performance, to avoid the printing plate appears rough, brittle, telescopic degumming, difficult to etch and other defects. Generally choose more than 300-mesh ointment THE-201, if the steel plate in 3 or more smooth and smooth just fine.

2 steel plate cleaning: The use of THE-202A drip, hand rub a few, after the oil oil water rinse, electric blow heat drying, or use HTE-202B instant cleaning powder hot water soak to remove oil. Then use THE-704 surface treatment agent to wipe it again.

3 plate making glue: two kinds of sensitized THE-301 and unsensitized THE-302. The use of sensitized plate-making glue for fine, high-density, and overprinting; the use of non-sensitized plate-making glue instead. This step is a key process technology and strict requirements. The plate-making standard requirement is that the plane is flat, the thick book is consistent, and the adhesion is good, which is favorable for the next process.

4 Curing: The sensitizing plate is placed on a roaster for drying, and the sensitized plate is dried with a hair dryer without sensitizing the plate. The baking temperature is controlled at about 50~70°C. If there is hot air evaporated from the glue, it does not have to be blown and allowed to dry. The time is too short, and the glue does not dry; Cooling can be placed in the cooling plate, that is, putting sponge and half cold water in the plate, so that the curing time of the plate making glue is short and firm.

5 manuscript ([Film]: Check the contents of the dense, dark depth, film surface, layout position, etc., and then positioned better than the steel plate.

6 Exposure: The emulsion surface of the positive film is affixed to the sensitized adhesive surface and placed on the exposure device. The exposure time of the UV light source is 1 to 2 minutes, which is advantageous for short development. The double exposure curing is advantageous for etching.

7 Development: Use THE-701 developer solution to the water, gently wipe the exposure area with a brush, expose the picture, and dry water. The revised version mainly focuses on areas that have not been developed. For those who have excessive trachoma or partial ecstasy, use plate-making glue to correct it, and then dry or expose it.

8 Etching: This step is the key to the quality of the steel plate, and each site requires full preparation and operation.
â—† The etching solution THE-801 is pre-filled according to the amount in a small plastic bottle or plastic box, and must not be placed in a metal container. Etched brush or brush ready.
â—† The area around the steel plate should not be etched and taped into a box shape to facilitate the placement of the etching solution.
â—†Slightly bake the steel plate in the tropical temperature and place the plastic plate on the shelf, which will facilitate the smooth and smooth etching.
â—† Put on a mask and anti-corrosion plastic rubber gloves to prevent the smoke from irritating the nose and throat, and prevent the accidental etching liquid from splashing on the skin.
â—† Use a brush to brush and etch the droplets in the steel graphic box, let the natural etching reaction, or evenly wipe the brush 2-5 times around the plate graphic. Each time the surface of the fresh etching liquid is bright green, after 3~10 minutes, the picture is obviously concave, and you can put clear water to rinse.
â—†The etching depth is about 30~50um. If it is not reached, the steel plate is baked and etched again.
The key is to grasp the relationship between etching and depth, temperature, and time.

9 Stripping: For the sensitized steel plate can be removed with THE-707, heating the sensitized steel plate into the disc containing the stripping solution THE-901, should be with anti-corrosion gloves. After washing and drying. Comprehensive quality inspection (using instrumentation tools is best).

10 Packing: The surface of the steel plate is lubricated and filled into the plastic package. The working fluids are returned to their respective packagings, and the tools and articles are cleaned and placed in special plastic trays.
If smooth, a 10×10cm steel plate can be machined in about 20 minutes

5, the design of the fixture

According to the shape of the printed product, a special fixture should be designed and manufactured. Securely secure the printed products to ensure the accuracy of printing and the repeatability in the printing process, and the convenience, convenience and safety of pick and place operations. For a large number of continuous operations, in order to improve efficiency, a conveyor belt structure can be designed.

(to be continued)