Shanghai Daoqin Plastics Co., Ltd.

  foam plastics is gas dispersion solid polymer in formed poly 集体, foam plastics tool has light, thermal insulation, 缓冲, insulation, anti 腐, price low and other advantages. therefore, in day use product, packaging, industrial, 农业, 交通运输业, industrial, aerospace industrial to application.

market upper relatively is Common foam plastics main/primary has polyurethane ester (PUR), polystyrene (PS) (PS), polyvinyl chloride (PVC) (PVC), polyethylene (PE) (PE), aldehyde resin (PF)  and polypropylene (PP) （PP） and other.

一．PS, PE, PUR三 type foam plastics property and EPP advantages

USA market in recent years for foam plastics demand amount year 4.2% speed degree growth; 我国20世纪90 year foam plastics development separation speed , its in main/primary product types has PS, PE, PUR三 large type. above type material has 一定 局限 property. performance lower:

◆ polystyrene (PS) （PS） foaming process in use fluorine chlorine combined material, bad large gas oxygen 层, its product degradation difficult also to ring formed “ white 污染”, therefore combined environmental protection 组织决定 to 2005 year use PS foaming product. according to 《 China consumption oxygen material 质逐步淘汰 国家 method 案》我国确定 in 2005 year 12 month 31 day front comprehensive prohibited foam production in use fluorine chlorine carbon combined material.

◆ polyurethane ester foam sheet/slice in foaming process in in for has 害 异氰 acid ester material, and foaming material method recycling utilizing.

◆ crosslinked polyethylene (PE) foam plastics most high use temperature degree is 80℃, 同样, polystyrene (PS) foam by add hot to it 玻璃化 temperature degree 105℃时 soft deformation.

EPP in automotive in application

therefore, foaming polypropylene (PP) material （EPP）应运而生. polypropylene (PP) resin tool has light, raw materials 源丰富, property can price ratio excellent and excellent heat resistant property, chemical resistant property, easy recycling and other features. is world upper output/production volume growth most fast general purpose thermoplastic property resin. for polypropylene (PP) foam research development formed in recent years hot 点.  

二．EPP is what?

EPP is types physical properties excellent 越, chemical property can stability, easy recycling new type high property can resistant pressure thermal insulation material, currently main applications in IT product packaging, equipment and automotive 方面.

 
EPP材质 base/seat 椅撑垫

EPP and EPS材 material versus ratio has very large different in 于: EPS材 material 以自身 structure bad to resistant pressure 缓冲效果, 而EPP材 material through material shrinkage and expand 张, absorption 并释放 can amount to resistant pressure 缓冲效果. in to more outer force rear, EPS材 material resistant pressure 缓冲效果 will reduce, 而EPP材 material effect/influence very small. therefore, 应该说EPP材 material versus ratio EPS材 material 说, resistant pressure 缓冲效果 more is excellent 秀.

1.EPP production process/workflow

polypropylene (PP) foaming 珠粒（EPP）以PP is main/primary raw materials, using/adopting material foaming technology made formed foaming 珠粒. main/primary use mold molding is various 各样 形状 and dimensions, in different combined use. using/adopting polypropylene (PP) foaming and use polypropylene (PP) foaming mold molding polypropylene (PP) foaming product, and commonly used foaming material, 如EPS and EPE versus comparison, tool has many excellent property can, 我们稍 rear again 说. 我们先 through sheet/slice simple 说明EPP production process/workflow:

1）首先 through 特定 配 ratio, to color more PP pellets.

2） through foaming and other 处理, to 5-60倍 foaming PP pellets, upper is 60倍 white EPP.

3） products manufacturing through will 2 in pellets use add hot to product.

2. and other foam plastics versus ratio EPP tool has which advantages?

EPP advantages

◆  polypropylene (PP) (PP) rigid property excellent polyethylene (PE) (PE)

PP flexural modulus large is 1.52Gpa, PE仅 is 207MGpa, chemical resistance and PE versus 似. Japan electrical company Ace type PP foaming material is its force property can tensile strength and strong/high degree foam plastics most high and other grade its pressure shrink strong/high degree low hard 质PUR and foaming PS, ratio soft 质PUR high, tool has in and other pressure shrink strong/high degree.

◆ polypropylene (PP) has relatively high heat deflection temperature (HDT), can in high temperature field/area in application

foaming polypropylene (PP) usually can resistant 130℃, this ratio polyethylene (PE) foam most high use temperature 80℃ high more. foaming PP and foaming PE一样 is 封闭式泡孔 structure, therefore, its hot rate 不会因潮 wet effect/influence, ratio foaming PE low, tool has significantly thermal insulation property, therefore can used as high grade temperature material.

◆ 良 good low temperature features

EPP products make in -30℃时也 performance very good property can.

◆ can amount absorption high

due to EPP products tool has 特殊 泡孔 structure, its through in gas 体滞流 and pressure shrink function absorption dispersion can amount, tool has excellent resistant pressure can property can. widely used in automotive 保险杠 can amount system and other anti 冲撞吸 can parts.

◆ dimensions 形状恢复 stability property good

EPP products more 次连续撞击 and deformation rear 会立即恢复原始形状, generate deformation, tool has “记忆” can force.

◆ 适于反复 use

EPP products flexibility property good, can use, easy 破碎.

◆ quality light

EPP products tool has light quality, can large degree reduce weight, can by used for machine, automotive and other heavy parts.

◆  tool has good surface property

EPP products is semi hard formed 形, tool has degree hardness, soft/flexible property, scratch 伤, and its material 体, tool has relatively good surface property.

◆ 透 water property small, force good

due to EPP structure, its products tool has long 期, good property water property small, 甚至至于 salt water in decrease low its property.

◆  oil resistant, chemical resistant product good

due to EPP chemical inert property, make its products oil resistant, chemical resistant agent property very good.

◆  can heavy utilizing environmental protection material

easy recycling again utilizing, easy separation understanding, products for has has formed separation, 燃烧不 generate has material 质.

◆  density can property

can made formed separation density different EPP products.

◆  stability property good, can in different ring lower use

EPP products has good resistant property, UV resistant 暴露, material bad, temperature degree (-30℃-130℃) abrasion loss and other poor ring 境.

◆ 隔音 property can good

EPP products tool has high 效 噪音隔离 function.

三．EPP product application areas

1． food packaging

in hard packaging market, PP market force very large, outer upper foaming PP sheet/slice density is 0.063g/cm3, 普通PP sheet/slice 材0.91g/cm3. 随 PP foaming sheet/slice products development, will add strong/high it in food field/area substitute/replace PET competition force.

现 in micro and micro food already 经进入人们 家庭生 active, crosslinked foaming PP sheet/slice hot molding food packaging container due to heat resistant property high 达130℃, can in micro use, but also resistant water, high temperature stability property good, surface 感觉舒适, for it ring 境印象 relatively good. density in 0.5-0.7g/cm3, thick degree in 0.5-1.5mm hot molding foaming PP is production tool has high rigidity and good insulation property tool, material and other raw materials. density in 0.2-1.51g/cm3, thick degree in 1.0-3.5mm foaming PP sheet/slice used for production type packaging materials, food packaging materials and bottle use 密封垫.  

2．缓冲 packaging

缓冲 packaging requirements most important property can is can amount absorption property. PP foam products can use high 载荷, its for heavy impact anti can force ratio foaming property polystyrene (PS) (PS)模塑 products or foaming polyurethane ester (PUR) more excellent 越. therefore, foaming PP can used for machine, high grade medical device tool, precision device, 声像材 material, versus machine, 玻璃陶瓷, process product, various use electrical appliances and other anti 震缓冲 packaging, in in loss and bad. due to can recycling, soft/flexible loss by packaging material surface advantages, in electrical appliances packaging field/area has 取代PS foaming material trend.

 
day commonly used packaging box/case

据 statistics, 我国1997 year color color electrical machine and color color tube/pipe this product use PS foam plastics 2 10,000 tons. Hotec Folien company is, PP foaming has polystyrene (PS) 模塑盘 trend, use 户感兴趣 is PP foaming sheet/slice can from 卷曲辊 upper add to molding -罐装-封口 plant/unit upper. can recycling utilizing foaming PP pallet for water and its it product and very 方便.

3． automotive parts

polypropylene (PP) foam plastics remove tool has high heat resistant property, high impact can absorption can force, good elastic property and hot molding property outer, also has can recycling recycled advantages, used for manufacturing automotive parts. 例如, use slip reinforcement PP manufacturing table/sheet 托架, use PP foam plastics made as soft/flexible elastic property in 间层, use soft 质密封 film as outer and other. this parts in automotive waste rear can recycling again use, 经拆卸, and heavy new pelletizing, can used as relatively low grade product 如车轮拱 sheet/plate inner 衬.  

1） automotive inner decoration material

automotive inner decoration material usually use has PP foaming, （芯材）, PUR（缓冲材 material ）, PVC（ table/sheet 皮）组 formed lamination material.

如 use crosslinked foaming PP and table/sheet material and 缓冲材 material lamination manufacturing automotive and and other inner decoration material tool has good hot welding property, make foaming PP can used for as automotive sheet/plate; its hot processing property good, make crosslinked foaming PP can 进一步 application in control and anti sheet/plate and other parts in.

 
EPP材质 automotive cationic sheet/plate

foaming PP sheet/slice can and PP, ABS and other inner material and PVC and other table/sheet material through bonding agent or add hot combined, true molding rear can made as carpet 支撑材 material, sheet/plate, and 行李架 and other.

foaming PP also can manufacturing direction 盘, 行李舱 inner and machine retardant sheet/plate, sheet/plate, inner sheet/plate can 保护垫, 缓冲垫, 头枕, tool and other. in need relatively high as temperature degree field/area, foaming PP ratio foaming PE（ can used for ultra- 80℃ 场 combined ） more has 利, cationic sheet/plate, table/sheet temperature sheet/plate and 车门间 temperature degree easy rise high 方.

2） automotive 保险杠

先进 automotive 保险杠 use combined formed resin 包覆PUR or PS foam plastics made. foam is effect/influence automotive 保险杠 property can important material, usually requirements has good can amount absorption property and resistant property, meanwhile requirements comparison light.

现 in already use polyolefin foaming material as automotive 保险杠 芯材, USA already production used for automotive 保险杠 PP珠粒 foaming material, Japan Styren Paper company production non crosslinked foaming 保险杠 already by company using/adopting, this type of 保险杠 using/adopting JSP company development EPP foaming production, 该保险杠 tool has good heat resistant property, dimensional stability, and absorption impact can amount large, light, easy recycling features.

 
EPP材质 automotive 保险杠

currently, PP foam plastics automotive parts already automotive parts market. currently market upper supply density 约0.069g/cm3 thick degree 2-6mm foaming PP sheet/plate can processing formed automotive inner decoration material, cover/cap 子, and other, density in 0.035-0.0850g/cm3, thick degree in 1.5-66mm PP crosslinked foaming material in in automotive upper use 做衬材 and retardant material