PVC Foam Board Is Widely Used In Advertisement Exhibition Board

PVC foam board with Moistureproof mold, heat insulation, sound insulation, flame-retardant, moth-proof, light, waterproof advantages But the PCC foam is mainly used in advertising exhibition board, mounted Sketchpad, passenger car, train compartment roof, box core layer, Interior decoration Board, building external wall panels, interior decorative plate, office, residential, public buildings compartment, commercial decoration racks, dust-free room board, ceiling Board, screen printing, computer lettering, advertising signs, exhibition board, PVC Foam Board logo Board album Board and other industries and chemical anti-corrosion Engineering, Thermoforming parts, cold storage board, special cooling engineering, environmental protection plate mold, sports equipment, aquaculture materials, coastal moisture-proof facilities, water-resistant materials, art materials and a variety of lightweight clapboard instead of glass ceiling.

PVC foam board is a kind of foam plate with closed foam pore structure, PVC Foam Board which is widely used in advertisement display board, mounting sketchpad, screen printing, engraving and so on.

PVC foam board features, resin material as a surface technology to make a widely used in the family, engineering and other wall decoration materials, PVC foam board production, color comparable to the traditional wallpaper, but also has the advantages of retaining wall panels, as a new type of wall paint, wallpaper wall decoration materials.

PVC Foam board Bubble Solution Method: In the production process, PVC Foam Board the two functions may exist at the same time, most of the hole is the local bubble uneven expansion, the melt strength is reduced. The melt itself is too low and the melt around the pressure is too small, summed up, mainly in the following aspects

1. Foam Melt thermal stability poor, extrusion temperature setting or improper control

Solution: In the extrusion operation, in addition to ensure good melt plastic, the melt temperature in the extruder must be lower than the foaming agent decomposition temperature, PVC Foam Board to prevent the foaming agent in the machine premature decomposition; The melt temperature of the export mold must reach the decomposition temperature area of the foaming agent, in order to facilitate the full foaming. The setting and control of extrusion temperature should also be adjusted in time according to the material of vacuum hole and the shape of the melt during start-up. PVC Foam Board Ensure that the material is basically orange peel when passing through the vent hole, and the bottom of the screw should not flow with powder. When the melt is extruded from the die, the surface should be smooth, PVC Foam Board with a certain elasticity, not one exit die or a rough section.

2. Low molecular weight or aggregation

Solution: The production of PVC foam board should be selected sc-7 resin, as far as possible not to choose sc-8 resin, or the use of sc-8 resin and sc-5 type or sc-6 resin mixed.

3. Improper addition of foaming agent

Solution: In the premise of not affecting the foaming rate, it can be appropriate to add endothermic foaming agent, replace part of the exothermic foaming agent, to inhibit the addition of exothermic blowing agent caused by the bubble. 1232 or bla-616 foaming agent belongs to exothermic and absorbing heat balance type foaming agents, PVC Foam Board decomposition without induction period, decomposition rate is fast, 10 minutes or so to achieve the maximum gas volume, release, no sudden, the maximum air volume up to 156ml. Its decomposition temperature is in the range of PVC processing temperature, can be used for thicker size, Complex shape of the product dynamic molding process to facilitate the elimination of broken bubbles, to ensure the stability of foaming performance.