Shanghai Daoqin Plastics Co., Ltd.

LDPE（ in 文名: low density high pressure polyethylene (PE) plastics raw materials ）:

感官 identification:手感 soft/flexible: white transparent, transparent degree generally, has tape and printing 字.（注: tape and printing is can 避免, 但一定 need control its content, this effect/influence in market upper price ）

燃烧 identification:燃烧火焰 upper lower 蓝; 燃烧时无烟, has wax odor, melt 滴落, easy wire drawing.

EVA（ in 文名: poly 乙—乙 acid 乙脂）:

感官 identification: surface soft/flexible; tough property strong/high 于LDPE, 手感发 viscous （但 surface 无胶）; white transparent, transparent degree high, and and PVC film very versus attention/notes separation.

燃烧 identification:燃烧时 and LDPE same has wax odor belt/tape acid 味; 燃烧火焰 upper lower 蓝; 燃烧时无烟.熔 melt 滴落, easy wire drawing.

注:本 product is PE types type in types, price and LDPE, can used for recycled pelletizing, quality requirements and PE same.
PP（ polypropylene (PP) ）:

感官 identification:本 product is white transparent and LDPE versus ratio transparent degree relatively high, 揉搓时 has 声响.

燃烧 identification:燃烧时火焰 upper lower 蓝, odor 似石油, melt 滴落, 燃烧时无黑烟.

PET film （ polyurethane 脂）

感官 identification:本 product is white transparent, relatively hard, 揉搓时 has 声响. appearance 似PP.

燃烧 identification:燃烧时 has 黑烟, has phenomenon, rear material surface black 炭化, 手指揉搓燃烧 rear black material, carbon material powder 末状.

PVC film （ polyvinyl chloride (PVC) ）

感官 identification: appearance 极似EVA但 has elastic property.

燃烧 identification:燃烧时冒黑烟, 离火即灭, surface black, melt phenomenon.

nylon copolymer material （LDPE+ nylon ）:

感官 identification:本 product and LDPE极 is versus 似.

燃烧 identification:燃烧火焰 upper lower 蓝, 燃烧时无烟, has wax odor, melt 滴落, easy wire drawing and LDPE different is 然烧时 has 毛发燃烧 odor, rear 呈淡黄 color.

attention/notes: nylon copolymer material in can used for recycled pelletizing, need and LDPE严格区 separation also need control in large parts in content.

PE+PP copolymer material

感官 identification:本 product and LDPE versus comparison, transparent degree high 于LDPE, and LDPE无差异, experiment/testing 极象PP film, is transparent pure white.

燃烧 identification:本 product 燃烧时火焰 is full color, melt 滴落, 无黑烟, odor 似石油.

PP+PET copolymer material

感官 identification: appearance 似PP, transparent degree high, 揉搓时声响 large 于PP.

燃烧 identification:燃烧时 has 黑烟, has phenomenon, surface black 炭化.

PE+PET composite/compounding film

感官 identification:材 material surface light slip 一面不 light slip, white transparent.

燃烧 identification:燃烧时似PET,无熔 melt phenomenon, surface black 炭化, has 黑烟, has phenomenon, belt/tape has PE wax odor.
waste plastics classification identification use Knowledge

waste plastics product types very more, 花样形式也 very more, its different industry. plastics its structure, · property can can separation is thermoplastic property and hot solid property large type. currently can recycling utilizing large is thermoplastic property plastics, is it is can solvent, can 塑.

waste plastics different formed waste plastics utilizing degree different, price different.首先 is color, color shallow (甚至无 color transparent), utilizing scope/range 越广, white, can formed multiple its it color, can white product, 同样价也 high. its is is product need, in raw materials add various formed 份.

currently from inner market upper 看, main/primary is CaC03(石 powder) content waste plastics utilizing value, CaC03 content more, low. from upper 看, product 不鲜艳, gloss (亚 light remove outer)则CaC03 content more, from upper 也会感觉 to heavy, use 火烧, 则烧 部 separation 会发红熄 rear formed 灰. another also need attention/notes reinforcement (指 glass fiber (GF)) product, currently can utilizing reinforcement product 仅PA, PBT, PP and other types, price high. also has —— types alloy material, currently inner has 销路仅ABS+PC一 types, its it 都不行. again according to raw materials specific gravity (density) 判断该互 mixed material can use, currently issues most more is ABS and PS互 mixed, PC and PMMA互 mixed, PVC sheet/slice material (bottle material) and PEl'’ sheet/slice material mixed, PE and PP各 semi mixed, this types material mixed rear, density more, very difficult use ．

commonly used methods separation 离, therefore, mixed material can is powder material, price very low, 甚至无人 need.

generally identification waste plastics has below/following several steps:

1, color;

2, light degree (transparent material can 掉);

3, 手感(感 weight, light slip degree);

4, 点燃(观火焰 color is 否冒烟, is 否含离火燃烧 or 根本不燃);

5, odor (various plastics 味都不 same, flame retardant and other);

6, wire drawing (CaC03 more wire drawing 肯定不 good, reinforcement 也拉不出 filament).