Blister cupboard door how to Blister cupboard door quality how to distinguish
Blister cupboard door, also known as cabinet molded door, originated in Germany, western families prefer this type of door board, use medium density board as base material, after engraving and milling pattern molding machine, fine grinding and then spray special glue, twice After polishing, the surface covered with PVC film was vacuum-blown by a plastic machine. So, how about the plastic cupboard door ? Blister cupboard door quality how to distinguish? Let's take a look with Xiao Bian below.
Blister cupboard door how to
Blister cupboard door PVC film color rich, realistic and three-dimensional wood grain, pure color, pure color, generally no cracking, deformation, resistance to scratches, heat, stain resistance, fade resistance and environmental performance. Blister cupboard door plate pattern is various, after the plastic molding can be sealed around the door plate as a whole, without secondary sealing, to solve the problem of some boards after the long-term open plastic and damp and other issues, foreign call it "no Defective plate."
The thickness of the PVC film used in plastic cupboard door panels is generally 0.15mm-0.45mm. The price imported from Germany is relatively expensive, followed by South Korea, Japan, and joint venture products, and the domestic price is relatively low. Good quality plastic door base material is not easy to be deformed, and has good environmental protection performance, delicate appearance, wear resistance, scratch resistance, high temperature resistance, flame retardant properties. The poor quality of the plastic door panel, the substrate is easy to deform, rough appearance, fear of scraping and so on.
Blister cupboard doorboard advantages and disadvantages:
1, the advantages of plastic door
The pvc skin on the surface of the blister door determines the color and texture of the blister cupboard door panel. Therefore, theoretically, there should be countless colors. The blister door panel is rich in color and texture, and the available options are relatively large to meet your needs. The need for any color (in fact, the membrane skin produced by the manufacturer of the membrane skin is still limited in color); because of the manufacturability of the medium density fiberboard, the surface of the plastic panel can also generate a variety of three-dimensional shapes, which can meet the different styles of different customers. Demand, and scratch resistance.
2, the disadvantages of plastic door
Although the blister door panel is a relatively good cabinet door, there is one drawback that can't be disguised anyway, so the problem of deforming the cabinet door panel is problematic. Because the manufacturing process is hot-pressing, it is inevitable that there will be thermal expansion and contraction. After cooling, the blister plate will have different degrees of indentation in the direction of the PVC film (the greater the substrate quality, the smaller the deformation), this process Unsolved problems have limited the further development of the plastic door panel.
Blister cupboard door quality how to distinguish
Grasp the quality of the cabinet door, is also one of the skills to buy cabinets, a good cabinet, the quality of the door must pass. The method of discriminating the quality of plastic door panels can be seen from four aspects: the quality of the substrate, the quality of the film, the surface treatment and the workmanship.
1, substrate quality identification method
The quality of the substrate directly determines whether the cabinet door panel has the secondary nailing ability, the ability to hold the nail, the degree of deformation of the finished blister board, and the environmental performance of the finished blister board. Good blister door base material is different in density from ordinary base material. The best resolution method is to select the same size small pieces of sheet material. We just need to weigh it. The high density plastic blister door holds the nail relatively. The ability will be better and the deformation will be smaller.
2. Membrane skin quality discrimination method
The quality of the film directly determines the grade and performance of the finished plastic door panel. Good plastic film must reach a certain thickness, the film skin adhesive uniform, color should be stable. If the thickness of the PVC film is low, it will cause whitening phenomenon and orange peel on the surface when crimping the corners. Some manufacturers choose to lower the pressure of the plastic machine in order to deal with these two phenomena. This reduces the whiteness to some extent. Plate deformation problem, but can not guarantee the adhesion of PVC film skin and substrate. The main problem with the uneven skin membrane adhesive is that the PVC membrane skin and the substrate cannot be adhered and pressed. The PVC membrane skin itself cannot be adhered and pressed by the plastic machine glue and the substrate. It must be glued on the back side during production. We call it back adhesive, whether the adhesive is uniform or not, and the quality of the adhesive directly affects the adhesion and pressure between the PVC film and the substrate. The problem of color is the most noticeable issue for finished blister board. Yellowing is an inevitable problem, but the stability of PVC surface texture and color is to be guaranteed, otherwise it is likely to occur during the normal use of the wiping process. Discoloration problems.
3, the surface treatment of plastic door
Surface treatment is related to the overall image of the finished blister board. If the orange peel is serious, the whole door panel looks darker (orange peel reflects light), and the high-gloss blister panel is very obvious at this point.
4, Blister door workmanship issues
This is the easiest problem that causes trouble during use. Mainly in the corner of the adsorption, if there is open plastic phenomenon, then this piece of plastic cabinet door in the course of the use of water absorption deformation may occur and PVC membrane skin itself cracking problem. When choosing, you can use the fingernail to use a little force to look at the part where the PVC film and the plate are pressed and pressed. The blister board with good workmanship (including back glue and glue sticking pressure) will not slam down with a little force.
More on how to how to blister and plastic cabinet door cupboard door quality to discern a brief introduction here, I hope for your help. For more information, please visit this website. Stay tuned.
Cabinet door
A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. In some ball check Valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal. The interior surface of the main seats of ball check valves are more or less conically-tapered to guide the ball into the seat and form a positive seal when stopping reverse flow.
Ball check valves are often very small, simple, and cheap. They are commonly used in liquid or gel minipump dispenser spigots, spray devices, some rubber bulbs for pumping air, etc., manual air pumps and some other pumps, and refillable dispensing syringes. Although the balls are most often made of metal, they can be made of other materials, or in some specialized cases out of artificial ruby. High pressure HPLC pumps and similar applications commonly use small inlet and outlet ball check valves with both balls and seats made of artificial ruby, for both hardness and chemical resistance. After prolonged use, such check valves can eventually wear out or the seat can develop a crack, requiring replacement. Therefore, such valves are made to be replaceable, sometimes placed in a small plastic body tightly-fitted inside a metal fitting which can withstand high pressure and which is screwed into the pump head.
There are similar check valves where the disc is not a ball, but some other shape, such as a poppet energized by a spring. Ball check valves should not be confused with Ball Valves, which is a different type of valve in which a ball acts as a controllable rotor to stop or direct flow.
A diaphragm check valve uses a flexing rubber diaphragm positioned to create a normally-closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side by a certain amount, known as the pressure differential, for the check valve to open allowing flow. Once positive pressure stops, the diaphragm automatically flexes back to its original closed position.
A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. The flapper valve in a flush-toilet mechanism is an example of this type of valve. Tank pressure holding it closed is overcome by manual lift of the flapper. It then remains open until the tank Drains and the flapper falls due to gravity. Another variation of this mechanism is the clapper valve, used in applications such firefighting and fire life safety systems. A hinged gate only remains open in the inflowing direction. The clapper valve often also has a spring that keeps the gate shut when there is no forward pressure. Another example is the backwater valve (for sanitary drainage system) that protects against flooding caused by return flow of sewage waters. Such risk occurs most often in sanitary drainage systems connected to combined sewerage systems and in rainwater drainage systems. It may be caused by intense rainfall, thaw or flood.
A stop-check valve is a check valve with override control to stop flow regardless of flow direction or pressure. In addition to closing in response to backflow or insufficient forward pressure (normal check-valve behavior), it can also be deliberately shut by an external mechanism, thereby preventing any flow regardless of forward pressure.
A lift-check valve is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.
An in-line check valve is a check valve similar to the lift check valve. However, this valve generally has a spring that will 'lift' when there is pressure on the upstream side of the valve. The pressure needed on the upstream side of the valve to overcome the spring tension is called the 'cracking pressure'. When the pressure going through the valve goes below the cracking pressure, the spring will close the valve to prevent back-flow in the process.
A duckbill valve is a check valve in which flow proceeds through a soft tube that protrudes into the downstream side. Back-pressure collapses this tube, cutting off flow.
A pneumatic non-return valve.
Multiple check valves can be connected in series. For example, a double check valve is often used as a backflow prevention device to keep potentially contaminated water from siphoning back into municipal water supply lines. There are also double ball check valves in which there are two ball/seat combinations sequentially in the same body to ensure positive leak-tight shutoff when blocking reverse flow; and piston check valves, wafer check valves, and ball-and-cone check valves.
Check Valves, Water Check Valves, Brass Check Valves, Sanitary Check Valves
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