Polystyrene foamed plastic into inflating continuous extrusion type EPS and XPS two kinds, the former is the benzene board, the latter is extruded board. Compared with the benzene board, extruded board belongs to the rigid foam thermal insulation material, polystyrene foamed plastic into inflating continuous extrusion type EPS and XPS two kinds, the former is the benzene board, the latter is extruded board.

Compared with the benzene board, extruded board belongs to the rigid foam thermal insulation material; it overcomes the EPS from craft and complex production process, EPS irreplaceable advantages. It is made of polystyrene resin and other additives produced by extrusion process with continuous uniform surface and closed pore type honeycomb structure of plate, the cellular structure of the thick plate, not appear, this kind of closed-cell structure of heat preservation material can have different pressure (kpa), 150-500, at the same time with the same low coefficient of thermal conductivity (only 0.028 W/M.K) and enduring excellent heat preservation and compressive properties, compressive strength can reach 220-220 kpa. Its mechanical properties are EPS incomparable, in addition, due to continuous extrusion of tightly closed pore structure. Its density, water absorption, coefficient of thermal conductivity and vapor permeability are lower than other types of plate, is recognized as the market at present the best thermal insulation material. EPS board, is short for inflating polystyrene foam plastics. It is raw material for polystyrene after pretest, curing, molding, drying and cutting. It can be made into different density, different shapes of foam products, and can produce all kinds of different thickness of foam plank. Widely used in building, heat preservation, packaging, freezing, daily necessities, industrial casting, etc. Can also be used to display the venue, the cabinet goods, advertising signs and toy manufacturing. Now in order to meet the national building energy-saving requirements is mainly used in wall exterior insulation, exterior wall insulation, floor heating. EPS board is a kind of thermoplastic material, per cubic meter of volume contains 300-300 independent airtight bubble, with the volume of air for more than 98%, due to air thermal conductivity is small, and sealed in plastic foam and cannot be convection, so the EPS is a kind of heat insulation performance is very good material.

EPS expansion of polystyrene board thin plastering exterior insulation system of exterior wall thermal insulation system is a common, has a superior heat preservation and heat insulation performance, good waterproof performance and wind resistance, shock resistance, can effectively solve the legal crack and leakage of wall. This system mature technology, construction is convenient, cost-effective, is insulation energy-saving building design and construction unit of the commonly used thermal insulation system of EPS board thin plaster external thermal insulation system in countries such as France, Switzerland, the United States, Canada has more than 30 years of application history, not the introduction of our country, in the 1989 s has scale buildings in large and medium-sized cities, and achieved good economic and social and economic benefits, won a wide range of application, recently, the domestic study of EPS have focused on by adding flame retardant nanometer technology processing, design of polymer molecular weight, select a specific proportion of foaming agent and screening has adjust the additive of polymer molecular inter-atomic forces, to increase the fire rating of EPS to B1 level. XPS board, the type is continuous extrusion polystyrene foam plastics. It is raw material for polystyrene and other auxiliary materials and polymer by heating mixed into the catalyst at the same time, and then extruded extrusion molding and manufacturing of hard foam plastic board.