Shanghai Daoqin Plastics Co., Ltd.

射铸 method (Injection Coining) 谓射铸 method is in material rear, 先维持一段 relatively low clamping force, rear again add large force. table/sheet in 示, has types injection method comparison. 7． formed 形(Molding) injection molding parts mold temperature degree must and material temperature, speed and pressure 一起考虑, cooling time effect/influence to product thick degree, effect/influence “循 ring time ”(Cycle Time). 8．穿孔(Punching) generally Europe injection molding parts machine in 炮筒顶端 has design “针阀 nozzle ”, injection, holding pressure 结束之 rear, in cooling 期 初期, will 会关闭而 nozzle rear 退, in cooling 期末段才施行冲头穿孔 as 业, 我们称此 methods is “ hard 切割”(Hard Cut). Japan injection molding parts machine use 此计阀 nozzle design 而炮筒也不 need rear 退, is in cooling front 段冲头就 already 施行穿孔, therefore plastics also 尚未完 full cooling 时, as already formed, 我们称此 methods is “ soft 切割”(Soft Cut). soft benefits is: (1) plastics can stability flow, temperature degree stability property improve/increase; (2) in plastics still very soft 时穿孔, can hard in inner 孔边缘 generate force (Stress); (3) types methods in 穿孔时不 need rear 退, therefore decrease/reduce machine loss consumption. generally pressure standards inner 孔直径 is 34mm而 in DVD production 部份也 has use 直径22mm pressure inner 孔. 9．取出(Take-out) machine 械手臂(Robot Arm) will water day elastic or again 抛弃 两 types methods. 10． cooling 定形(Conditioning) 当盘基自 injection molding parts mold in rear, temperature degree still very high, this 时若置放 in balanced cooling plant/unit upper, cooling non-uniform will 会导至 warpage generate, light is cooling need has time, in cooling 区域 落尘 amount need 考虑, is make is 1, 000 grade 净化区域, 当盘基 in its in 停留几十 separation still has by machine 会, especially is water 平置放 cooling methods, therefore more semi in high efficiency 滤网(HEPA) 沉流罩 lower still need has “ high pressure electrical device ”(De-ionized Blower), its 针尖处 will 流 空 gas belt/tape electrical, make gas in 灰尘因 belt/tape electrical in upper 而不会乱飞, machine 本身 接 工 as need 落实, 以免累积 amount electrical generate electrical 火花. therefore, most cooling plant/unit is will 盘基直立 边旋边 front 进 直 strip/profile cooling machine 构(Rotation Vertical Cooling Buffer) 四, as and issues analysis 实际操 as upper 我们都希望 can has relatively fast speed, short “ production cycle ”(Cycle Time), reduce production cycle factors has: (a) di 折射; (b) warpage; (c)沟槽 几何形化 1．线 inner optical testing machine (In-Line Optical Scanner) (1) testing light 源(Light Source) inner 100％ testing machine is 由灯泡(Lamp), solid light (Laser Diode) or light tube/pipe (LED) and other light add upper optical sheet/slice (Optical Filter) and light 侦测数组(Photo Array) 做穿透 and light strong/high degree (Light Intensity)测 amount, can to upper 如穿透 rate, rate, warpage and defect and other 状况. (2)盘 sheet/slice rear stability property (Vibration Stability) generally inner optical testing machine need in 1～2秒 inner will sheet/slice machine testing, 故盘基落 in testing machine “承轴”(Chuck) upper need can stability rear again 开始测 amount, this is time use. 以往于1998 year CD-R rigid a large amount of production 时候, can light made upper 会配置 has 三台线 inner optical testing machine, separation for 盘基, material sheet/slice (Dye Disc) and formed product (Finish Disc)做质检, in made more semi already 取消第一台 配置, 即不线 upper inner 测盘基, 而盘基 testing more semi outer optical testing machine 担任. 2．线 outer optical testing machine (off-Line optical Tester) outer optical testing machine and inner versus 似, in can more complex optical 计测, add upper 一 空间 计 amount and light sheet/slice (Polarizer) combined, can 经由计 amount different degree upper dispersion light strong/high degree 估算沟槽 wide degree and deep degree, this value (versus for value) need and force micro 镜(Atomic Force Microscope, AFM) 测出 绝 for value ratio for can its is to versus 当 精 degree. (1) optical 读取头 value is generally light 刻 “ optical 读取头”(Pick-Up Head, PUH) and optical testing machine light 源照射 methods is 不一样, inner outer optical testing machine is using/adopting mm 直径平行 light and PUH in need poly 焦(NA) is different. (2) transparent degree (穿透 rate /反射 rate) add temperature high will plastics 烧焦而 generate issues, plastics drying full 盘基也会 has generate, generally positive as lower, maintain 适当 “ screw speed degree ”(Screw Circumferential Velocity) and “射 speed ”(Injection Velocity), plastics maintain good transparent degree. (3) warpage degree (Tilt/Dishing) warpage formed main/primary is semi injection molding parts mold temperature degree 差异, its is in injection molding parts mold in cooling speed rate, and cooling 时 模穴 pressure and mold opening front 吹风(Air Blow), in mold opening rear 取出 盘基 still very hot, has cooling generate warpage, rear 续 染 material 盘基烘 dry, 溅射, bonding, outer light hard 化保护胶层(UV Curing) and printing and other effect/influence to warpage large small. generally warpage more semi is is toward “ warpage ”(Radial Tilt), has “切线 warpage ”(Tangential Tilt). (4) di optical upper “ di 折射”(Birefringence) also 称“ rear amount ”(Retardation), this is in material structure in direction rate has different, formed different direction upper “偏 light separation amount ”(Polarization Component) although same plastics thick degree has versus 位(Phase) upper 差异. 当盘基 in has di 折射 变异时, optical 头读取信号 激 light light 盘反射 rear in light separation amount upper versus has different, dry dry strong/high low function 会进而 effect/influence to strong/high degree 读取, therefore, need reduce di amount, 并维持 inner outer upper di 折射 一致 property. di formed has: (a) plastics separation in formed cooling fast slow, is has force 残留; (b)冲头切口 time is 否会造 formed inner material upper force; (c) injection molding parts methods selection is make solvent plastics in injection molding parts mold in flow and shrinkage issues; (d) plastics density 变异. di effect/influence is: (a)改变激 light 极化偏振 versus 位, make optical 读取头 信号变异: (b)PUH循轨 force amount decrease low; (c)容 easy generate dispersion 射(scattering); (d) can light formed product 刻录效果不佳, formed 形变异, for machine property decrease low. di adjustment 如图 示, increase material temperature or add large clamping force make inner outer di 折射一同 reduce, its it parameters (reduce speed, reduce mold temperature, long cooling time, rear 冲头切口 time and other) adjustment can make inner outer upper di amount to 一致. (5)复 made rate will mold temperature, temperature degree, injection speed degree or clamping force improve/increase increase 盘基沟槽 复 made rate, clamping force need to certain value above 且维持 time 足够才 can has relatively 佳 复 made rate, high clamping force time also can 久, 以避免因 is “ plastics 盘基”(PC substrate) and “镍质 pressure 模”(Nickel Stamper) shrinkage rate different, formed outer shrinkage rate high molding 不佳. (6) for 沟槽几何形状 requirements for can light 盘 刻录 and injection molding parts conditions comparison, 刻录方面希望 need has 清楚 沟槽轮廓, 但实际 injection molding parts method to 此理想 value, is solution water and other issues, 沟槽几何误差 容许 rate must degree wide. (7)穿透 rate 盘基 穿透 rate can 直接线 upper outer testing machine upper 测出, has 关盘基 defect can 经由直接溅射 metal 层 观察, need attention/notes is various material process 需 沟槽 wide deep different, in cm 直径 平行 light 束照射之 lower has different dispersion amount, therefore 测 穿透 rate 会不一样, 故以线 outer testing machine (如CATS Pulstec and other) true positive has to “数 value 孔径”(NA) rate positive 确. (8) shrinkage rate for/regarding shrinkage rate 计算, 我们必 must 借助如原子 force micro 镜 观察, inner outer 径沟槽 几何 dimensions 变化, basic upper 以垂直距离 ratio table/sheet 示, has add upper water upper material, 甚至以沟槽而积 计算. generally plastics shrinkage rate in 95％ to 98％ between, different parameters large small for shrinkage rate effect/influence different, 请参考图说. 3． issues analysis (1) machine features (Mechanical Properties) A． water more 云雾(Cloud /Release Mark) water generate more semi in mold opening (Mold Opening) 瞬间, basic upper is is “ water shrinkage 差异” and “ warpage ” add formed factors formed, in inner outer upper 各处皆 has can can property, 但出现 in inner machine rate high. 如同开 new 车一样 need engine abrasion loss 状况, 建议每张 pressure use 之初100～200 sheet/slice injection molding parts, use relatively small clamping force and relatively long injection molding parts cycle, production rear again add high clamping force and add fast speed amount 产 工 as. B． weight and thick degree (weight/Thickness) holding pressure pressure large 则盘基 thick degree thick, its it effect/influence thick degree factors has clamping force, mold temperature and material temperature. basic concept is machine temperature machine rear injection molding parts 约60 sheet/slice rear 才会趋于 stability, make in amount in has short machine, in machine 时约会 has 先期 5～20 sheet/slice thick degree and dimensions unstable. injection molding parts machine good bad and is to injection molding parts control adjustment most optimization, can in amount 产时盘基 weight most large value 6δ) large small 决定. C． inner large small, and balanced pressure 模冲孔偏差 and 盘基冲孔偏差 and other formed 轨道读取时 摇晃, especially light in 做52X high speed 旋转时, make 循轨(Tracking)不 easy. another in injection molding parts 盘基 造 formed density and direction upper different thick degree and other issues, make quality in 心偏移 material dimensions in 心, formed in 旋转时 “不 balanced ”(Unbalance) and “ poly 焦”(Focus) issues, this Common high speed lower light generate 噪音. (2) appearance defect (Cosmetic Defects) in appearance defect has wire drawing (Threads), plastics inner 污染(潮 wet, 杂质…), 刮伤(Scratches), surface 污染, formed full, degree saturated and and flow marks and other and other. basic upper need attention/notes pressure inner ring 码位置, use defect 发生方位 and inner 径距, is in same 位置, more semi is injection molding parts mold issues, 若发生位置不 in 同一方位, has can can is material, and supply unstable formed, 依序做推理 as to causes, generally plastics 供货商 has provide issues solution manual/handbook 做参考. 4．原子 force micro and high optical testing machine ratio for force micro 镜(Atomic Force Microscope, AFM) as principle is 以一 极 fine 探针(Probe) in in 以原子间 斥 force (凡 瓦 force)而悬浮一 small 段距离, micro small upper lower 起幅会 make sheet/plate rear 反射激 light very large 振幅 摆动, therefore this micro small high low 变化会 reaction to light 侦测数组 in 做记录, 当探针针尖连续走 几道沟槽 rear 累积起 一 立体 影像, this testing value ratio optical testing machine use optical 绕射测 amount 准确, 但AFM can for small 区域做测 amount, 而绕射 testing can in inner 做完整张沟身沟 wide amount, front is for rear is versus for 式, 两者间 need ratio for positive has 意义. 图三十九, AFM图像显示DVD-R in 平台(Land) upper has 信号坑五, Toyo injection molding parts machine currently machine full electrical injection molding parts machine most machine type is ST50discPRO, in 己添名 is S machine type, table/sheet “ standards machine type (Standard) 意思. remove 承袭以往 design in injection molding parts has 净化沉流罩 outer, injection molding parts machine has 附自己 injection molding parts mold 净化罩, nozzle upper has design, mono true and outer lubricated 油泵. remove and other design outer, most important is its has 50顿 锁模出 force; most solid machine 身; in in also has add sheet/slice force sheet/plate, use more uniform will clamping force injection molding parts mold in: control is 随 一 tool electrical machine force 驱动, can to soft as upper to more 完美 切口, maintain inner 孔 均一 property. high quality market development 需, has development in ST50discPRO-S 四支拉杆末端 upper add upper 一 伺服 electrical machine injection molding parts machine is “ST50discPRO－H”, tool electrical machine add upper in injection molding parts mold inner high density 四象限式 pressure device ring control, can mono 独调校每 拉杆 upper force amount, make clamping force more uniform in 盘基 各放射 direction upper, decrease/reduce 盘基 不 balanced issues, non combined high speed (48X above) can light 盘CD-R and DVD-R(4X above) production. another, Disc BOX直立式 injection molding parts machine has 占 面积 most small, can heavy force formed plastics density and 直立施展 clamping force easy property advantages, ring cycle can add fast to 2．8s/DVD. DiscPRO-V injection molding parts machine using/adopting di screw di injection molding parts mold design, and its it injection molding parts processing design mono screw di injection molding parts mold different, is mono need negative injection molding parts mold injection, in “注道衬 sleeve/set ”(Sprue Bush)不 for 称 情况 lower, has 充填(Filling) non-uniform 情况发生, very easy generate light 盘 不 balanced issues. therefore has di screw di injection molding parts mold can to in for injection molding parts.