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雙色注塑工藝:破解高端美容儀一體化機身的設(shè)計困局

來源: | 責(zé)任編輯:東莞世邦塑膠 | 發(fā)布日期:2025-07-23
雙色注塑工藝:破解高端美容儀一體化機身的設(shè)計困局

引言:從單一到一體化的技術(shù)突圍

外殼注塑加工廠家注塑模具廠從業(yè)二十年,我見證了美容儀器從 “功能優(yōu)先”到“美感與體驗并重”的演變。早期美容儀機身普遍采用分體式設(shè)計--外殼拼接、表面二次噴涂、硅膠套包裹等工藝,不僅增加了裝配工序,還易出現(xiàn)色差、接縫開裂、材料老化等問題 而雙色注塑工藝的出現(xiàn),通過一次成型實現(xiàn)硬質(zhì)結(jié)構(gòu)+軟觸感表面的無縫結(jié)合,為高端美容儀的一體化設(shè)計提供了革命性解決方 案。

一、困局:高端美容儀機身的四大設(shè)計挑戰(zhàn)

1.人體工學(xué)與握持舒適性

手持類儀器需長時間貼合面部操作,傳統(tǒng)硬質(zhì)塑料導(dǎo)致手部疲勞,后期包覆硅膠又易位移、藏污納垢。

2.防水防腐蝕需求

美容儀常接觸液體環(huán)境,分體式結(jié)構(gòu)接縫處易滲水,電路板腐蝕風(fēng)險高。

3.外觀精細度與品牌辨識度

多色拼接、透光LOGO、漸變紋理等設(shè)計,傳統(tǒng)注塑需多次分件組裝,良品率低且成本激增。

4.環(huán)保與耐用性沖突

噴涂工藝存在VOC排放問題,而覆膜層易剝離;雙色注塑通過材料本體結(jié)合,規(guī)避了二次處理環(huán)節(jié)。

醫(yī)療美容雙色模具注塑1

二、破局者:雙色注塑的核心技術(shù)解析

(1)工藝原理:旋轉(zhuǎn)模具下的精密共舞

雙色注塑依賴專用雙料筒注塑機與可旋轉(zhuǎn)動模系統(tǒng):

第一步:A模腔注射硬質(zhì)材料 ( PC/ABS) ,形成機身骨架;

第二步:模具旋轉(zhuǎn)180°,在 B 模腔注射軟膠材料( TPU/TPE) ,包覆于硬膠表面;

全程自動化,周期60秒,精度誤差控制在 0.01mm內(nèi)。

(2) 材料選擇的科學(xué)邏輯

功能區(qū)域

推薦材料

特性要求

機身骨架

PC、改性PA

高剛性、耐腐蝕、尺寸穩(wěn)定性

握持/接觸面

TPE、硅膠

50~80A軟硬度、抗油脂、

抗汗液

關(guān)鍵準(zhǔn)則:兩種材料熔點差需30 ℃,且分子鏈相容 ( PC+TPU)以避免分層。

(3)模具設(shè)計的三大訣竅

轉(zhuǎn)盤精度:旋轉(zhuǎn)機構(gòu)同軸度0.005mm ,防止雙色錯位;

澆口定位:軟膠澆口需避開硬膠結(jié)合薄弱區(qū),通常采用扇形澆口均衡壓力;

咬合結(jié)構(gòu):硬膠表面設(shè)計燕尾槽、微孔陣列(深度≥ 0.4mm) ,使軟膠熔體嵌入形成機械互鎖。

雙色 (2)

三、案例實證:雙色工藝在美容儀上的應(yīng)用突破

1.射頻儀手柄防滑設(shè)計

傳統(tǒng)方案:硬塑手柄+凹點防滑紋→握壓疼痛;

雙色方案:內(nèi)骨架PC+外側(cè)TPE 漸變包裹→壓力分布均勻,操作30 分鐘疲勞度下降60%

2.導(dǎo)入儀防水結(jié)構(gòu)

硬膠主體與軟膠密封圈一體成型,接口處無拼縫,通過IPX7級防水測試。

3.透光指示模塊革新

硬質(zhì)透明PC(0.7mm)內(nèi)嵌 LED 槽,外層覆蓋乳白色TPU→光線均勻柔和不刺眼,無需額外導(dǎo)光板。

四、行業(yè)痛點與未來演進

雖然雙色注塑優(yōu)勢顯著,但從業(yè)者需警惕以下挑戰(zhàn):

1.模具成本高:雙色模造價約為普通模的2~3 倍,需萬件以上訂單攤薄成本;

2.工藝窗口窄:軟硬膠料溫、注射時序需精確匹配,溫差± 5 ℃即可導(dǎo)致結(jié)合力下降 30%

3.材料創(chuàng)新迫在眉睫:目前適用于美容儀的抗菌TPU 、抗靜電PC 等特種材料仍依賴進口。

未來趨勢已現(xiàn)端倪:三色注塑實現(xiàn)漸變透光紋理、微發(fā)泡雙色技術(shù)減輕機身重量(如碳纖維增強樹脂 )

結(jié)語:技術(shù)與美學(xué)的共生之道

雙色注塑絕非簡單的“雙料疊加”,而是材料科學(xué)、精密機械與工業(yè)設(shè)計的深度協(xié)同。它讓美容儀器從“工具”蛻變?yōu)椤八囆g(shù)品”,在指尖觸碰的瞬間傳遞科技的溫度。作為一名從業(yè)二十年的注塑人,我始終堅信: 每一次模具的旋轉(zhuǎn),都是功能與美學(xué)的精密咬合 ;每一臺無縫機身,都是工業(yè)制造的詩意表達。

【本文標(biāo)簽】 雙色注塑美容儀注塑

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