Process flow: Confirm the original → plate-making photography (including color separation) → development → fixing → washing → drying → plate revision → photographic screening → plate revision → sun screen printing plate. When making a monochromatic plate, according to the phase process, a photo positive film is produced, which can be used for printing screen printing plates. When making color manuscript negatives, you can follow the phase program to shoot the screening phase plate, or contact copy screening. It can then be used to produce screen printing plates. The specific contents of some items in the above process flow are as follows: Confirm manuscripts—that is, organize the manuscripts to be copied, calculate the specification ratio, and determine the rule line. Plate-making photography—When photographing color separations of multi-color manuscripts with photographic equipment, color separations are taken for photography. Development-The film after shooting is put into the developer for development. After the photosensitive film is exposed to light, the silver halide of the emulsion layer is converted into a latent image by photochemical action. After the chemical treatment of the developer, the latent image becomes a visible clear image. Fixing-In order to keep the image visible for a long time after the photosensitive film is developed, it needs to undergo fixing chemistry and management. The principle is to remove the unexposed residual silver halide on the photosensitive film to fix the image. Water washing-water washing can be divided into intermediate water washing and final water washing, which are two small links in the photo-engraving process and two procedures that cannot be ignored. Intermediate water washing is carried out between development and fixing, which can stop the development and protect the fixing solution. The final water wash is to rinse off the fixer and other impurities. The water used in this kind of water washing is clean and not flowing, and the temperature of this water is required to be 16-24 ° C. Asphalt distributor is a kind of black pavement construction machinery, it is a highway, city roads, airports and ports construction of major equipment. Asphalt distributor ,Bitumen Truck,Bitumen Semi Truck,Liquid Bitumen Truck,Bitumen Tanker CLW GROUP TRUCK , https://www.clwgrouptruck.net
Introduction
In the asphalt penetration method is adopted, asphalt layer surface on the asphalt or residue treatment construction or maintenance of asphalt pavement, asphalt distributor can be used to transport and makes liquid asphalt (including hot asphalt, emulsified asphalt and residue) : it can also be to the breaking up of in situ soil supply asphalt binder and asphalt stabilized soil to build or pavement base.
CLW GROUP TRUCK Construction of high-grade highway asphalt pavement at the bottom of the transparent layer of waterproof adhesive layer of asphalt, asphalt surface of highway maintenance, spraying, can also be used to implement layered pavers anti-interference ability of the equipment.
Intelligent asphalt distributor is used for construction of high-grade highway asphalt pavement at the bottom of the transparent layer of oil spill cloth, waterproof layer, bonding layer. Can makes high viscosity modified asphalt, asphalt, modified emulsified asphalt, emulsified asphalt etc. Can also be used to implement layered paving process of construction of county and township levels road oil. The distributor by the automobile chassis, asphalt tank, asphalt pump and spraying system, heat conduction oil heating system, hydraulic system, combustion system and control system, pneumatic system, operating platform.
Classification of asphalt distributor
CLW GROUP TRUCK Asphalt distributor can be used in sealing layer, through up and down the road, asphalt surface treatment and asphalt penetration type, the fog sealing layer, such as construction, can also be used for liquid asphalt or other heavy oil transportation.
Automatic asphalt distributor is due to the computer automatic control, high operability, it is widely used in highway construction and highway maintenance engineering, can be used for different grade of road surface and sealing layer, layer, waterproof layer, adhesive layer, asphalt surface treatment and asphalt penetration type, the fog sealing layer, such as construction, can also be used for liquid asphalt or other heavy oil transportation.
CLW GROUP TRUCK Rubber asphalt distributor is easy to operate, in the absorption of similar products at home and abroad on the basis of the technology, increased to ensure the construction quality of technical content and highlight the construction condition, construction environment improvement of humanized design. Its design is reasonable and reliable to ensure the asphalt distributing uniformity, industrial computer control is stable and reliable, the machine technical performance has reached the world advanced level. The vehicle engineering in the construction by our company continuous improvement, innovation, perfect, has the ability to apply to all kinds of work environment.
This type truck can replace the existing asphalt distributor, in construction process can not only makes the rubber asphalt, emulsified asphalt can also spread cloth, heat diluted asphalt, asphalt, asphalt and high viscosity modified asphalt.