Energy-saving glass processing - Starlight Glass Technology Co., Ltd

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First, unpacking
1. The product is packed in a wooden box, double-layer plastic film sealed package (built-in desiccant, sunshade, moisture proof), coated film (in the box) with protective film, foamed pearl cotton between the glass.
2 , according to the box side arrow mark pointing out of the box, and take the sheet from the glass surface facing the box (the opposite side of the coated surface).

Second, cutting
1. Cutting requires oil-free cutting on the coated surface of the glass.
2. If manual cutting is performed with automatic or semi-automatic mechanical cutting or with a roller cutter, it is recommended to work directly on the protective film.
3. If the protective film is partially wrinkled during the cutting process, it should be smoothed first and then continue to work.

Third, stacking
1. The glass should be stacked on the “ A -frame (at 6-7 ° angle) or L -frame”, and the number of stacked on the first side should not exceed 30 .
2. For glass that has not been tempered after cutting, the coated surface should be stacked on the outside of the A -frame.
3. After cutting and tempering the glass, except for the innermost glass, which is stacked outside the coating surface, the remaining glass is stacked on the surface of the coating.
4 , the tempered glass should be separated by dry cardboard or equivalent spacer to avoid scratching the film surface, and the glass with different specifications such as size and thickness must be effectively isolated at the junction, otherwise the larger glass film The membrane surface was crushed.

Fourth, edging
1. Do not remove the protective film on the coating surface when grinding.
2. The roller, support member and pressing belt of the edging machine must be cleaned before edging. The pressure belt should not be too tight. The belt can be raised by 0.2mm according to the thickness of the glass .
3 , cooling water cooling cooling water must be diligently replaced, can not, entrain large hard particles, so as not to cause LOW-E film surface scratches.

Fifth, Cleaning
1. Clean the glass immediately after edging.
2 , the cleaning machine should be thoroughly cleaned and maintained before use.
3. The glass must be cleaned with clean, filtered tap water, preferably deionized water.
4. The protective film of the coating surface should not be removed during cleaning. At the same time, the brush of the cleaning machine should be properly raised to prevent the brush from damaging the protective film.
5. During the cleaning process, the glass should not be retained in the cleaning machine to avoid accidental damage to the coated surface.
6. After cleaning, the glass should not leave water drops, otherwise it must be dried with paper.
7. After edging, it must be packed in plastic. The two pieces of glass should be separated by a 2-4 mm thick dry paper, and a proper amount of desiccant should be placed in the package to absorb moisture (unless hot processing is performed immediately).

Sixth, the removal of the coating surface protective film
1. The protective film of the four corners should be lifted separately and then removed as a whole, otherwise the edge film layer may fall off.
2. After the protective film is removed, the film surface should not be in contact with foreign matter, especially organic pollutants.
3 , the glass torn off the protective film can not be cleaned, otherwise it may cause scratches on the film surface.

Seven, hot processing (tempered, semi-tempered)
1. Before thermal processing, remove the protective film and check the appearance quality of the film surface according to national standards (check whether there are abnormalities such as film removal and slag removal).
2 , before the tempering should keep the coating surface clean, the operator must wear gloves and masks, and avoid direct contact with the film surface as much as possible, some of the collapsed need to be hand-polished, pay attention to cover with thick paper film to prevent glass slag Damage to the membrane surface.
3 , in order to reduce the appearance of the product deformation (waveform, bow and optical deformation, etc.), it is recommended to use a convection heating tempering furnace, if the radiant heating tempering furnace should have a thermal outflow compensation device.
4. The furnace and the wind screen must be kept clean during the tempering process to avoid foreign matter adhering to the glass surface during the tempering process.
5. SO2 or sulphur powder must be stopped 24 hours before the production of tempered Low-E glass products .
6. When tempering, the coating surface must face upwards. The tempering heating time of single silver Low-E glass should be longer than that of the same thickness transparent glass. The tempering heating time of single silver Low-E glass is longer.
7. Because the Low-E film surface reflects infrared rays, the bottom furnace temperature should be appropriately reduced.
8. The small piece of glass is processed separately, and the small piece of glass absorbs heat quickly, which can shorten the heating time appropriately.
9. The process parameters of the specific tempering process are set by each processing manufacturer according to the characteristics of the equipment.
10 , after the product is glass tempered, it is packaged in plastic cloth, and the glass is separated by paper skin with 2-4mm thickness. At the same time, an appropriate amount of desiccant should be placed in the package to absorb moisture (if the hollow is synthesized immediately, this procedure can be avoided).

Eight, hollow synthesis
1. When synthesizing hollow, the edge of the glass to be bonded with the sealant must be treated first to remove the coated surface (commonly known as film removal), and the film layer must be completely peeled off.
2 , the glass cleaning after the film must be carried out with a special soft brush, and should be used to clean the resistivity of more than 10M pure water, otherwise it is easy to leave residual traces, affecting the appearance quality.
3. Adhesives compatible with coated glass should be used for bonding.
4 , hollow synthesis must use two or more sealing processing, the spacer strips are filled with 3A molecular sieve on all four sides , the whole operation process should keep the sealing of the insulating glass and the drying of the hollow layer air, so as not to affect the service life of the product.

*About processing time
1. After the glass is unpacked, the cutting operation, edging and tempering synthesis should be carried out as soon as possible. It should not be exposed to air for too long, otherwise it will easily cause oxidation of the glass coating surface. All the above steps must be completed within 24 hours.
2. It is recommended that each of the above processes must be completed within 4 hours. Each process should be reasonably arranged according to the processing efficiency of the equipment to avoid oxidation caused by the timeout of the glass coating surface.
3. If the processing cannot be completed within the specified time, the product must be resealed and packaged and filled with nitrogen. The maximum storage time should not exceed 60 hours. If the time exceeds the specified time, the film may be oxidized.

* Other considerations
1. During the whole processing process, the coated surface can not be sucked by the suction cup.
2. The glass of the same project should be processed in the same tempering furnace. The first time production should retain the engineering sample for comparison and inspection during subsequent production.
3 , the performance of the glass before and after tempering, the appearance is different, can not be mixed.
4. The color of the tempered Low-E product is closely related to the thermal history of the glass, so it cannot be returned to the furnace.
5. When the hollow is synthesized, the coated surface of the Low-E glass should be placed on the second side (ie, the hollow glass faces the outer one as Low-E glass, and the membrane surface faces the hollow glass air layer).
6. This product is not to be used in synthetic laminated glass.