First, the advantages and disadvantages of blister board
Because the color and texture of the blister board are determined by the PVC film coated on the surface, there should be countless colors in theory (only the color of the film is changed, but in fact the color of the film produced by the film manufacturer is still limited). The color and texture of plastic sheets are rich, and there is more room for choice. It can basically meet the color requirements of different customers. Due to the manufacturability of the density board (the density of the density board is relatively uniform, and the particles are relatively small, so it can be processed into any shape), the surface of the plastic board can also generate various three-dimensional shapes, which can meet the different needs of different customers for styles, and it is scratch-resistant and wear-resistant (referring to normal household use, it is definitely not allowed to scrape with a kitchen knife, and naturally it is not allowed to rub the door panel on the cement floor).
Blister board is an excellent board, but there is a big problem-door deformation. Because the manufacturing process is hot pressing, it is inevitable to expand with heat and contract with cold. After cooling, the plastic sheet will sag in the direction of PVC film to varying degrees (so we must pay attention to the choice of substrate, the greater the quality of substrate, the smaller the deformation, which is a relatively simple physical knowledge, I believe everyone can understand). This technically unsolvable problem limits the development of plastic sheets (this problem is not particularly obvious when making cupboard doors, and the plastic sheets on wardrobe doors are too deformed to be used. If you want to use them, you must resort to forming aluminum profiles, which is beyond the scope of this discussion). Of course, some manufacturers are smart enough to use PVC diaphragm with lower thickness to solve the deformation problem (the quality of the substrate is too poor to solve the substrate only from this aspect). Of course, the deformation of the film sheet will be solved by low thickness.
Second, the production process of plastic door panels
1, plastic door panel technology:
Blanking, milling, grinding, glue spraying, secondary grinding, plastic film covering, trimming and cleaning.
2. Sanding and secondary grinding in the process of manufacturing plastic door panels.
Bonding the fire-proof board on the back of the base sanding board-electronic saw-milling-bonding the fire-proof board on the surface-bending and forming-edge sealing is completed.
Edge sealing also has advantages and disadvantages. Technically, there are two kinds of edge sealing: manual edge sealing and machine edge sealing. Machine edge sealing adopts automatic welding wheel pressure welding, and high-quality glue must be used to ensure no glue seam, no ripple, no glue opening, and good vision and feel. This is not the case with manual edge sealing. As far as the origin of edge banding is concerned, high-quality edge banding is made of high-quality primary materials, which has excellent performance, no glue opening and no fading, and has incomparable advantages over general edge banding. High-quality edge banding is made of primary materials, which can be recycled and belongs to environmental protection materials. The seam between the plate and the edge banding is very delicate, and the arc chamfer is very smooth. Generally, the quality of edge sealing tape and adhesive is not high, and the hardness is relatively high, which is prone to the phenomenon of unsmooth chamfer, fracture and degumming. After PVC waterproof edge sealing technology, Debao Dizzani slotted aluminum alloy edge sealing and handle embedded with T-shaped barbs, which not only made the fireproof board have a sense of the times in appearance, but also made a leap in quality. This process is complicated, and only a few domestic manufacturers produce it at present.
Third, the quality appraisal of blister board
First, the quality of the substrate directly determines whether the door panel has the ability to eat nails twice, the ability to hold nails, the deformation degree of the finished plastic panel and the environmental protection performance of the finished plastic panel (the environmental protection performance is the old tune, so I won't repeat it here). A good substrate is different from an ordinary substrate in density. Of course, this difference is difficult to distinguish with the naked eye. At this time, the best way to distinguish is quality (physical name, that is, weight:). At present, there are 730KG/750KG/780KG commonly used in the market, and this data refers to the mass per square meter. Consumers can choose small pieces of the same size and weigh them. Relatively speaking, the higher the density, the better the nail holding ability and the smaller the deformation of the plate.
Secondly, the quality of the film skin directly determines the grade and performance of the finished blister board. A good plastic film should have a certain thickness, even back glue and stable color. If the thickness of PVC film is low, white dew and orange peel will appear on the surface when covering the corners (the reason of orange peel phenomenon is that the substrate particles are too large and the polishing is uneven), which is easy to understand and needs no explanation. In order to cope with these two phenomena, some manufacturers choose to reduce the pressure of plastic suction machine, which reduces the problems of exposure and plate deformation to a certain extent, but can not guarantee the adhesion between PVC film skin and substrate. The main problem caused by the uneven back glue of the film skin is that the PVC film skin can not be attached to the substrate normally, and the PVC film skin itself can not be attached to the substrate with glue by a plastic suction machine, so the glue must be rolled on the back during production, which is called back glue, and whether the back glue is uniform or not. The quality directly affects the adhesion between PVC film skin and substrate. The color problem is the most noticeable problem of the finished plastic sheet, and yellowing is inevitable, but the stability of PVC surface texture and color should be ensured, otherwise the color fading problem is likely to occur in the normal use process.
Third, surface treatment, which is related to the overall image of the finished plastic sheet. If the orange peel phenomenon (orange peel phenomenon refers to the phenomenon that the surface of the finished blister board looks like a pit on the orange peel when viewed from a certain angle) is serious, the whole door panel looks dark (orange peel refracts light), and the high-gloss blister door panel is very obvious in this respect.
Fourth, the problem of workmanship, which is the most prone to problems in the process of use. Mainly manifested in the adsorption at the corners. If there is glue opening, the door panel may absorb water and deform during use, and the PVC film itself will crack. Don't be afraid of a little trouble when purchasing. When you choose, you can use your fingernail to dig the part where the PVC film sticks to the plate, so that a well-made (including adhesive backing and bonding) blister plate will not appear with a little force.
Earlier, I introduced the manufacturing process of plastic door panels, as well as the advantages and disadvantages of plastic door panels. A * * * has seven processes, including grinding and two polishing. Bian Xiao introduced them, hoping to help you. Firstly, the production technology of plastic door panels is introduced. For more information, please continue to pay attention to the decoration of Tuba Rabbit!