Shanghai Daoqin Plastics Co., Ltd.

         China is 奥运会 夺牌 large 国, 而乒乓球 as is China 国球, is 奥运赛场 upper project. made as 乒乓球 Raw Materials ——赛璐珞, is by is plastics field/area 元老, has 悠久 历 history. 奥运会乒乓球开赛三天, 赛程也 already 进入白 hot stage/phase, 今天, 就 聊聊乒乓球 that 事儿!

        赛璐珞, 即硝化 fiber plastics, is plastics types, 由胶棉(low nitrogen content fiber) and increase agent (main/primary is 樟脑), lubricant, material and other processing made formed, is history upper most thermoplastic property resin. its appearance has color or color transparent or transparent sheet/slice 状, property soft, has elastic property, resistant water, oil resistant, resistant acid, tool has very large resistant strong/high degree. 赛璐珞 in acid 根 硝基 fiber is manufacturing 火药 基础 raw materials, 遇明火, high hot easy 燃烧. relatively long time 贮存会 let 赛璐珞逐渐发 hot, hot dispersion 就会引起自燃, resistant property 差. is manufacturing 乒乓球 important raw materials, false 象牙.

        乒乓球 manufacturing process separation complex, can coarse separation is below/following 17 steps:

        ① separation raw materials → ② 挤 pressure → ③ abrasion slip →④ soft 化→ ⑤ 第 one-time molding → ⑥ drying → ⑦ 切割→ ⑧ 测定 thick degree → ⑨ 黏 combined → ⑩ hot dry → ⑪ 测定 weight → ⑫ 第 one-time abrasion → ⑬ drying → ⑭ 第二次 molding → ⑮ 第二次打 abrasion → ⑯ 检查, 鉴定→⑰ 印章, product.

        挤 pressure and abrasion slip

         weight ultra- 100kg 赛璐珞 raw materials, formed thick degree is 0.8mm thin sheet/slice. rear to pressure machine 里, pressure formed thin sheet/slice. will its surface abrasion light slip.

         soft 化

         principle: main/primary formed separation is fiber and 一 脂 type, 他们会 solvent in 里面, this need 预先切割 good sheet/slice 状赛璐珞(硝纤象牙)浸泡 in water 70%, 酒精30% solvent liquid in. make sheet/slice soft, 以方便进行随 rear 工序.

        第 one-time molding: soft sheet/slice hot water in, from lower 方塞入一 standards semi semi material 体, sheet/slice formed semi 圆形 球. steps can 决定一 乒乓球 quality 70%.

         drying and 切割

         in one-time molding rear, this semi 圆形 球浸泡 in solvent liquid 里. rear drying 2天, again remove semi 圆球形 more 余边缘.

        测定 thick degree

         simple 测定乒乓球 thick degree:

         use tool: degree 尺, small strip/profile, in property amount methods: ① use small strip/profile 绕乒乓球一周, in strip/profile 接头处 use in property 笔扎一 small 孔

        ② use degree 尺测出两 small between 距离, is L

        ③ 乒乓球 直径d=L/π

        黏 combined

        测定 thick degree rear, 两 配 sleeve/set semi 圆球组 combined in 一起. in 接缝处 coating upper solvent agent, melt combined 边黏结, most rear formed 球形, 黏结之 rear need 急于碰触, anti 止出现裂缝.

         hot dry

        黏 combined rear, 需进行 large 约一周 hot dry. 此期间 need will 乒乓球位置 solid 定. rear, weight, use 1/100g is standards add separation.

        第 one-time abrasion rear 经 30～40天 自然烘 dry, 进入第二次 molding stage/phase. add hot 一边进行 molding.

         combined in 倾斜台子 upper, 并进行滚动 testing, can 直线滚动 标记 is 三星, its as is use 球.

         most by 选定 球 will upper positive 式发售, 整 乒乓球 made as process to 此结束.

        但 is has 传闻称: from 2014 year 7 month 1 day 起国际乒联组织 ratio will use new plastics 球, this is 继40 mm large 球, 11 separation made, machine water rear heavy large device 材改革, this will formed is 本次里约奥运会国乒队面 for heavy large 考验.