TWI630952B - 中空絲膜模組與中空絲膜模組之製造方法 - Google Patents
中空絲膜模組與中空絲膜模組之製造方法 Download PDFInfo
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Abstract
本發明之中空絲膜模組1具有收容中空絲膜束3之筒狀容器2、集管5、及灌封部4。集管5具有向筒狀容器2側環狀地突出之集管突出部22。筒狀容器2具有向集管5側雙層地環狀地突出之內側突出部50與外側突出部51。集管5與筒狀容器2係於將集管突出部22插入至筒狀容器2之內側突出部50與外側突出部51之間的狀態下藉由超音波熔接而熔接。集管突出部22與筒狀容器2之內側突出部50係於至少一部位以上之區域熔接,且集管突出部22與筒狀容器2之外側突出部51係於至少一部位以上之區域熔接。
Description
本發明係關於一種中空絲膜模組及中空絲膜模組之製造方法。
例如,於血液透析、血液透析過濾、血液過濾、血漿分離等體外循環式之血液淨化處理或腹水等體腔液處理、製劑之病毒去除處理等中,使用作為血液淨化器或成分分離器之中空絲膜模組。中空絲膜模組一般而言具有:筒狀之筒狀容器,其於內部收容中空絲膜束,且於側面具有成為流體之出入口之2個埠(入口埠與出口埠);及集管,其設置於該筒狀容器之兩端,且具有流體之出入口。集管之流體之出入口連通於各中空絲膜之內側區域,筒狀容器之側面之埠連通於各中空絲膜之外側區域。例如,於使用中空絲膜模組之血液透析中藉由如下方式進行,即,使血液自一個集管流入,通過中空絲膜之內側區域自另一個集管流出,並且使透析液自筒狀容器之側面之一埠流入,自另一埠流出而使血液中之多餘物質通過中空絲膜於透析液側分離。
且說,於上述中空絲膜模組之製造步驟中,上述集管相對於筒狀容器之端部以覆蓋該筒狀容器之端部外側之方式嵌入,且藉由超音波熔接而熔接於筒狀容器之端部(參照專利文獻1)。
[專利文獻1]國際公開第2003/146663號
於上述中空絲膜模組之利用中,於對中空絲膜模組內部施加有壓力之狀態(施加有內壓之狀態)下,擔心集管與筒狀容器之背離、或者集管與筒狀容器之局部性之熔接部位之破損,且為了防止處理液向系統外(模組外)之洩漏,亦必須提高集管與筒狀容器之耐壓熔接強度。
本案係鑒於該方面而完成者,其目的在於提高中空絲膜模組之耐壓強度。
本發明者們經過銳意研究之結果發現,對集管與筒狀容器於將集管突出部插入至筒狀容器之內側突出部與外側突出部之間的狀態下藉由超音波熔接而熔接,將集管突出部與筒狀容器之內側突出部於至少一部位以上之區域熔接,且將集管突出部與筒狀容器之外側突出部於至少一部位以上之區域熔接,藉此提高中空絲膜模組之耐壓強度,從而完成本發明。
即,本發明包含以下之態樣。
(1)一種中空絲膜模組,其具有:筒狀容器,其收容中空絲膜束;集管,其設置於上述筒狀容器之兩端部,且具有流體之出入口;及灌封部,其將上述中空絲膜束於上述筒狀容器之兩端部包埋固定;上述集管具有向上述筒狀容器側突出之集管突出部,上述筒狀容器具有向上述集管側雙層地突出之內側突出部與外側突出部,上述集管與上述筒狀容器係於將上述集管突出部插入至上述筒狀容器之內側突出部與外側突出部之間的狀態下藉由超音波熔接而熔接,上述集管突出部與上述筒狀容器之內側突出部係於至少一部位以上之區域熔接,且上述集管突出部與上述筒狀容器之外側
突出部係於至少一部位以上之區域熔接。
(2)如(1)之中空絲膜模組,其中上述集管突出部與上述筒狀容器之外側突出部之熔接部之位置的至少一部位,及上述集管突出部與上述筒狀容器之內側突出部之熔接部之位置的至少一部位係於上述筒狀容器之長度方向上大致相同之位置。
(3)如(1)或(2)中任一項之中空絲膜模組,其中上述集管突出部與上述筒狀容器之內側突出部之熔接部係形成於在上述筒狀容器之長度方向上不同之複數個部位,且於上述不同之熔接部之間,存在上述集管與上述筒狀容器相互不接觸之區域。
(4)如(1)~(3)中任一項之中空絲膜模組,其中於上述集管突出部與上述筒狀容器之內側突出部之熔接部,及上述集管突出部與上述筒狀容器之外側突出部之熔接部之間,存在上述集管與上述筒狀容器相互不接觸之區域。
(5)如(1)~(4)中任一項之中空絲膜模組,其中上述集管突出部與上述筒狀容器之內側突出部之熔接部之至少一部位,或者上述集管突出部與上述筒狀容器之外側突出部之熔接部之至少一部位,係遍及集管之周向之全周而連續性地熔接。
(6)如(1)~(5)中任一項之中空絲膜模組,其中上述筒狀容器之內側突出部與上述集管突出部係於兩部位之區域熔接,上述筒狀容器之外側突出部與上述集管突出部係於一部位之區域熔接。
(7)如(1)~(6)中任一項之中空絲膜模組,其中於上述灌封部之兩端面形成有將灌封部之兩端部於徑向切斷而形成之灌封部切斷面,上述灌封部切斷面與上述集管之內側面接觸。
(8)如(1)~(7)中任一項之中空絲膜模組,其中上述集管及上述筒狀容器包含聚丙烯系樹脂。
(9)一種中空絲膜模組之製造方法,該中空絲膜模組具有:筒狀容器,其收容中空絲膜束;集管,其設置於上述筒狀容器之兩端部,且具有流體之出入口;及灌封部,其將上述中空絲膜束於上述筒狀容器之兩端部包埋固定;且該中空絲膜模組之製造方法具有如下步驟:以上述集管具有向上述筒狀容器側突出之集管突出部,且上述筒狀容器具有向上述集管側突出之雙層之內側突出部與外側突出部的方式形成集管;及將上述集管與上述筒狀容器於將上述集管突出部插入至上述筒狀容器之內側突出部與上述筒狀容器之外側突出部之間的狀態下藉由超音波熔接而熔接;於上述熔接步驟中,將上述集管突出部與上述筒狀容器之內側突出部、及上述集管突出部與上述筒狀容器之外側突出部分別於至少一部位以上之區域熔接。
根據本發明,由於可提高中空絲膜模組之耐壓強度,故而可抑制集管與筒狀容器之背離、局部性之熔接部位之破損,由此可防止處理液向系統外洩漏。
1‧‧‧中空絲膜模組
2‧‧‧筒狀容器
2a‧‧‧端部
3‧‧‧中空絲膜束
3a‧‧‧中空絲膜束3之兩端部
4‧‧‧灌封部
4a‧‧‧部分
4b‧‧‧部分
4S‧‧‧灌封部切斷面
5‧‧‧集管
10‧‧‧埠
21‧‧‧頂板部
21a‧‧‧內表面
22‧‧‧集管突出部
23‧‧‧空間
30‧‧‧基部
30a‧‧‧第1內周面
31‧‧‧中段部
31a‧‧‧第2內周面
31b‧‧‧外周面
32‧‧‧前端部
32a‧‧‧第3內周面
32b‧‧‧外周面
40‧‧‧平坦面(階部)
41‧‧‧平坦面(階部)
42‧‧‧平坦面(階部)
50‧‧‧內側突出部
50a‧‧‧內周面
50b‧‧‧外周面
51‧‧‧外側突出部
60‧‧‧第1熔接部
61‧‧‧第2熔接部
62‧‧‧第3熔接部
70‧‧‧空間
P‧‧‧中心軸
R0‧‧‧內徑
R1‧‧‧內徑
R2‧‧‧內徑
R3‧‧‧外徑
R4‧‧‧內徑
R5‧‧‧外徑
R6‧‧‧內徑
圖1係表示中空絲膜模組之構成之一例之縱剖面的模式圖。
圖2係表示集管與筒狀容器之接合部分之構成之一例的放大剖視圖。
圖3係集管與筒狀容器之接合部分之A-A剖視圖。
圖4係集管與筒狀容器之接合部分之B-B剖視圖。
圖5係表示將集管與筒狀容器超音波熔接之情況之剖視圖。
圖6係表示集管與筒狀容器之接合部分之力起作用之方向的放大剖視
圖。
圖7係表示顯示熔接部之另一例之集管與筒狀容器之接合部分的構成之一例之放大剖視圖。
圖8係表示顯示熔接部之另一例之集管與筒狀容器之接合部分的構成之一例之放大剖視圖。
圖9係斷續性地熔接之情形時之集管與筒狀容器之接合部分之B-B剖視圖。
以下,參照圖式對本發明之較佳之實施形態進行說明。再者,對相同之要件標註相同之符號,並省略重複之說明。又,上下左右等之位置關係只要未特別說明,設為基於圖式所示之位置關係者。進而,圖式之尺寸比率並不限定於圖示之比率。又,以下之實施形態係用以說明本發明之例示,本發明並不限定於該實施形態。
首先,對本實施形態之中空絲膜模組之構成進行說明。圖1係表示中空絲膜模組1之構成之一例之剖面模式圖。
中空絲膜模組1具備筒狀容器2、中空絲膜束3、灌封部4、及集管5等。
筒狀容器2係形成為圓筒狀,且長度方向(圓筒之中心軸P方向)之兩端部2a開口。於筒狀容器2之內部收容有中空絲膜束3。於筒狀容器2之側面,形成有成為流體之出入口之例如2個埠10。
中空絲膜束3係將多條中空絲膜集中而成之束,且沿著長度方向收容
於筒狀容器2內。中空絲膜束3作為分離膜而發揮功能,可於各中空絲膜之內側區域與外側區域之間將作為分離對象之流體之成分分離。
灌封部4係藉由灌封樹脂而構成,且於筒狀容器2之兩端部2a之內側將中空絲膜束3之兩端部3a包埋,並且將中空絲膜束3固定於筒狀容器2之兩端部2a。灌封部4係外周部成為僅藉由灌封樹脂而構成之部分4a,其內側成為灌封樹脂進入至中空絲膜束3之中空絲膜彼此之間隙之部分4b。作為灌封樹脂,例如可列舉聚胺基甲酸酯樹脂、環氧樹脂、矽樹脂等,但並不特別限定於該等。
集管5設置於筒狀容器2之兩端部2a,且作為蓋材而設置於該兩端部2a之開口。集管5具有:管狀之噴嘴部20,其於中心軸P成為流體之出入口;板狀之頂板部21,其自噴嘴部20向徑向擴展;及作為側壁部之集管突出部22,其自頂板部21之外周緣向筒狀容器2側突出。
噴嘴部20具有用以連接外部管之螺紋構造。如圖1及圖2所示,頂板部21具有與中空絲膜束3之端部3a對向,且自噴嘴部20朝向筒狀容器2之端部2a而直徑逐漸變大之內表面21a。於集管5之內表面21a與中空絲膜束3之端部3a之間,形成有自噴嘴部20流入之流體或自噴嘴部20流出之流體通過之空間23。
集管突出部22具有以中心軸P為軸心之圓筒形狀。集管突出部22例如如圖2所示,自頂板部21朝向筒狀容器2側依序具備基部30、中段部31及前端部32。基部30、中段部31及前端部32係徑向之厚度互不相同,基部30之厚度最大,中段部31之厚度第二大,前端部32之厚度最小。
基部30係自頂板部21連續之部分,例如具有第1內周面30a,該第1內
周面30a具有固定之內徑R1。第1內周面30a之內徑R1大於頂板部21之內表面21a之下端(最大徑部)之內徑R0。於頂板部21之內表面21a與基部30之第1內周面30a之間,形成有相對於中心軸P垂直之環狀之平坦面(階部)40。
中段部31具有第2內周面31a,該第2內周面31a具有大於內徑R1之固定之內徑R2。前端部32具有:第3內周面32a,其具有與第2內周面31a相同之內徑R2;及外周面32b,其具有外徑較中段部31之外周面31b小之固定之外徑R3。於基部30之第1內周面30a與中段部31之第2內周面31a之間,形成有相對於中心軸P垂直之環狀之平坦面(階部)41。又,於中段部31之外周面31b與前端部32之外周面32b之間,形成有相對於中心軸P垂直之環狀之平坦面(階部)42。
筒狀容器2之端部2a具有所謂兩股構造。端部2a具有向集管5側雙層地圓筒狀地突出之內側突出部50與外側突出部51。內側突出部50與外側突出部51分別具有以中心軸P為軸心之圓筒形狀,且配置為同心圓狀。內側突出部50較外側突出部51長,且向集管5側(中心軸P方向外側)突出。內側突出部50之內周面50a構成筒狀容器2之內周面。
內側突出部50之內周面50a具有大於集管內徑R0且小於集管內徑R1之內徑R4。內側突出部50之外周面50b具有大於集管內徑R1且小於集管內徑R2之外徑R5。外側突出部51之內周面51a具有大於集管外徑R5之內徑R6。
於將集管突出部22插入至筒狀容器2之內側突出部50與外側突出部51
之間的狀態下,集管5與筒狀容器2藉由超音波熔接而熔接。內側突出部50與集管突出部22之中段部31及前端部32對向,外側突出部51與前端部32對向。
內側突出部50與集管突出部22係於內側突出部50之前端部附近與集管突出部22之中段部31之間的區域(第1熔接部60)、及內側突出部50與前端部32之間之區域(第2熔接部61)熔接。
外側突出部51與集管突出部22係於外側突出部51與前端部32之間之區域(第3熔接部62)熔接。
第1熔接部60係例如遍及內側突出部50之端面(圖2中之上端面)與外周面50b而形成。再者,於圖2中,為了方便起見而明確地顯示有熔接部60~62之分界,但於接觸部分熔融而接著之熔接中,其分界模糊,又於每一熔接發生變動。第1熔接部60既可如圖3所示遍及集管突出部22之周向之全周而連續性地形成,或者亦可不連續(斷續性)地形成。於第1熔接部60遍及全周而連續性地形成之情形時,即便於假設血液等處理液超過集管5與灌封部4之接觸部之情形時,亦可由最近之熔接部60堵住,故而可使欲向系統外洩漏之處理液進入之路徑(區域)最短,於該方面較佳。
如圖2所示,第2熔接部61例如形成於集管突出部22之前端部32之前端附近(前端部32之較長度方向之中央更靠前端之位置)。第2熔接部61自第1熔接部60遠離,且於第2熔接部61與第1熔接部60之間,形成有集管突出部22與內側突出部50不接觸之空間70。第2熔接部61既可如圖4所示遍及集管突出部22之周向之全周而連續性地形成,或者不連續(斷續性)地形
成。於第2熔接部61連續性地形成之情形時,自抑制處理液向系統外洩漏之觀點而言較佳。於第2熔接部61不連續地形成之情形時,自可抑制集管5與筒狀容器2之熔接所需要之能量、可提高生產效率之方面而言較佳。
第3熔接部62例如形成於集管突出部22之前端部32之前端附近(前端部32之較長度方向之中央更靠前端之位置)。第3熔接部62既可如圖4所示遍及集管突出部22之周向之全周而連續性地形成,或者不連續(斷續性)地形成。
如圖2所示,第2熔接部61與第3熔接部62例如形成於在中心軸P方向(長度方向)上大致相同之位置。再者,所謂此處所言之「大致相同」,係指第2熔接部61與第3熔接部62係沿著中心軸P方向而至少一部分之位置為共通位置。
如圖2所示,於灌封部4之端面,形成有將灌封部之兩端部於徑向切斷而形成之灌封部切斷面4S。灌封部4向較筒狀容器2之內側突出部50更靠中心軸P方向之外側(集管5側)突出。灌封部切斷面4S相對於集管5之內表面之平坦面40以被賦予有特定壓力之狀態抵接。
作為筒狀容器2及集管5之原材料,並不特別限定,可自各種熱塑性樹脂選擇。例如,於結晶性樹脂中可列舉乙烯與α-烯烴之共聚物或低密度聚乙烯、高密度聚乙烯之聚乙烯系樹脂或丙烯單體之聚合物、丙烯與乙烯之共聚物或者丙烯與乙烯與其他之α-烯烴之共聚物之聚丙烯系樹脂。另一方面,於非晶性樹脂中,可列舉聚酯、聚碳酸酯、聚苯乙烯、苯乙烯-丁二烯共聚物(SBS)、丙烯腈-丁二烯-苯乙烯共聚物(ABS)等樹脂,該等
既可以單體使用或者亦可作為混合物利用。
本實施形態中之較佳之樹脂係上述中之聚丙烯系樹脂,其中丙烯與乙烯之無規共聚物自剛性與耐熱性之觀點而言較佳,且乙烯含量調整為1~8質量%之丙烯與乙烯之無規共聚物更佳。
首先,準備較最終需要之長度更長之中空絲膜束3,收容於筒狀容器2內。其次,於筒狀容器2內形成灌封部4。該灌封部4係將中空絲膜束3之兩端部3a包埋並且將中空絲膜束3固定於筒狀容器2之內周面50a。其次,將灌封部4(中空絲膜束3之兩端部3a)之多餘部分於相對於中心軸P垂直之斷面切斷而形成灌封部切斷面4S。
其次,將集管5熔接於筒狀容器2。例如,如圖5所示,將集管5之集管突出部22插入至筒狀容器2之內側突出部50與外側突出部51之間,然後,將超音波焊頭90移動至集管5之頂板部21側,一面將集管5自中心軸P方向之外側朝向筒狀容器2側壓抵一面附加超音波振動。藉由所施加之超音波振動,而於集管5與筒狀容器2相互接觸之區域產生摩擦熱,形成第1熔接部60、第2熔接部61及第3熔接部62。然後,將灌封部切斷面4S與集管5之內表面之平坦面40抵接。再者,為了於熔接部60、61、62之位置熔接,而於成為熔接部60、61、62之部分之集管突出部22、或內側突出部50及外側突出部51之至少任一者,設置有用以於熔接步驟中使集管5與筒狀容器2相互接觸、衝突之衝突形狀(熔接接頭形狀)。如此,集管5與筒狀容器2於三個部位熔接,完成圖1所示之中空絲膜模組1。
熔接接頭形狀並不特別限定,可選擇對接接頭形狀或共用接頭形
狀。對接接頭具有如下優點:具有被稱為能量指向矢之三角形之肋,超音波振動使伸縮運動集中性地產生於三角形之肋部分,藉此以極短時間發熱至樹脂之熔融溫度為止而可進行熔接,從而可較佳地利用於第1熔接部60。共用接頭具有如下優點:相對於所施加之超音波之縱向振動,而接觸面與振動方向接近於相同方向,故而難以於熔接面產生氣泡,熔接部之液密性或氣密性優異,從而可較佳地利用於第1、2、3熔接部60、61、62。
根據本實施形態,集管5與筒狀容器2係於將集管突出部22插入至筒狀容器2之內側突出部50與外側突出部51之間的狀態下藉由超音波熔接而熔接,於集管突出部22與內側突出部50之至少一部位以上之區域(熔接部60、61)熔接,且於集管突出部22與外側突出部51之至少一部位以上之區域(熔接部63)熔接。其結果,集管5不易自筒狀容器2背離,可提高中空絲膜模組1之耐壓強度。進而,集管5與筒狀容器2不隔著任何構件而直接熔接,故而集管5與筒狀容器2牢固地結合。又,可既提高生產效率,亦將成本抑制得較低。
於因中空絲膜模組1之處理液而施加有內壓之狀態下,對集管5與筒狀容器2之熔接部位,附加有企圖將集管5自筒狀容器2剝離之應力。於本實施形態中,於集管突出部22與內側突出部50之至少一部位以上之區域(熔接部60、61)熔接,且於集管突出部22與外側突出部51之至少一部位以上之區域(熔接部63)熔接,故而可使上述應力分散,從而可提高耐壓強度。尤其,於將集管突出部22與內側突出部50之熔接部位設置有複數個之情形時(熔接部60、61),藉由減輕施加至中空絲膜模組內部之與流體之距離最近之熔接部位(熔接部60)的應力,而提高耐壓強度,可防止伴隨熔接部位之破壞之處理液之洩漏。又,於對中空絲膜模組1施加有內壓之狀
態下,如圖6所示流體自灌封部切斷面4S與集管5之內表面之間進入至外側之情形時,流體之壓力直接附加至包含處於集管突出部22與內側突出部50之間且遍及周向而連續性地形成之第1熔接部60在內的與流體之接觸面,對第1熔接部60附加剪應力(圖6之下方向箭頭),故而熔接部之破壞會進展。而且,於集管5內之流體之壓力進而上升,第1熔接部60之一部分破損之情形時,該壓力附加至包含處於集管突出部22與內側突出部50之間之第2熔接部61在內之與流體之接觸面,對第2熔接部亦同樣地附加剪應力(圖6之下方向箭頭),熔接部之破壞會進展。另一方面,處於集管突出部22與外側突出部51之間之第3熔接部62於不產生與流體之直接接觸的期間,即,未於遍及周向而連續性地形成之第1熔接部60或者第2熔接部61之至少一者產生局部性之破壞之期間,可相對於在藉由集管5之內壓使集管5自筒狀容器2遠離之方向作用的力而始終產生抵抗力。自以上之觀點而言,藉由形成熔接部60、61、62而集管5亦難以自筒狀容器2脫離,可提高中空絲膜模組1之耐壓強度。
又,筒狀容器2之內側突出部50與外側突出部51自兩側固持並按壓集管突出部22,故而可抑制集管突出部22向徑向之內側或外側彎曲。藉此,即便於中空絲膜模組1之內壓成為高壓時,亦可抑制集管突出部22之相對於徑向之彎曲。因此,可抑制伴隨熔接部60、61、62之變形而產生之集管5與筒狀容器2之熔接界面之剝離。其結果,可提高中空絲膜模組1之耐壓強度。
根據本實施形態,藉由將集管突出部22與外側突出部51之第3熔接部62之位置、及集管突出部22與內側突出部50之第2熔接部61之位置,設為於筒狀容器2之長度方向大致相同之位置,可提高熔接過程之生產效率。
又,可將集管突出部22與內側突出部50之第2熔接部61、及集管突出部22與外側突出部51之第3熔接部62於超音波熔接之過程中同時地形成。
較佳為,集管突出部22與內側突出部50之熔接部60、61係形成於在筒狀容器2之長度方向上不同之複數個部位,且於不同之熔接部60、61之間,存在集管5與筒狀容器2相互不接觸之區域(空間70)。藉由使各熔接部60、61相互獨立,可防止熔接部之龜裂(裂縫)破損,其結果,中空絲膜模組內部之與流體之距離較近之熔接部位(熔接部60、61)之破壞階段性地產生,可延長直至熔接部之破壞為止之時間。進而,於集管突出部22與內側突出部50之至少一部位以上之區域(熔接部60、61)、及集管突出部22與外側突出部51之至少一部位以上之區域(熔接部63)之熔接部之間,存在集管5與筒狀容器2相互不接觸之區域,故而可防止伴隨熔接部之龜裂(裂縫)破壞之中空絲膜模組1內之處理液向系統外洩漏。
筒狀容器2之內側突出部50與集管突出部22係於兩部位之區域熔接,且筒狀容器2之外側突出部51與集管突出部22係於一部位之區域熔接,藉此於集管突出部22之內側兩度充分堵住剛漏出之處理液,並且即便於假設處理液通過集管突出部22之內側之情形時,亦可於集管突出部22之外側抑制處理液漏出。進而藉由將內側兩部位、外側一部位熔接而可飛躍性地提高耐壓強度。
熔接部60~62係遍及集管5之周向之全周而連續性地熔接,故而可進而提高各熔接部60~62之強度。
於灌封部4之兩端面,形成有將灌封部之兩端部於徑向切斷而形成之灌封部切斷面4S,灌封部切斷面4S與集管5之內表面之平坦面40密接。藉此,可抑制流體容易地進入至集管突出部22與筒狀容器2之端部2a之間
隙,從而可提高集管5與筒狀容器2之間之密封力。
於以上之實施形態中,集管突出部22與內側突出部50之間之熔接部為兩部位,集管突出部22與外側突出部51之間之熔接部為一部位,但各個熔接部之數量並不限定於此,可任意地選擇。此時,複數個部位之熔接部亦可以共用接頭形狀熔接。
例如,亦可如圖7所示僅為第1熔接部60與第3熔接部62,亦可如圖8所示僅為第2熔接部61與第3熔接部62。又,既可於集管突出部22與內側突出部50之間為三個部位以上之熔接部,亦可於集管突出部22與外側突出部51之間為兩部位以上之熔接部。
於以上之實施形態中,熔接部60~62係遍及集管5之周向之全周而連續性地形成,但亦可於集管5之周向斷續性地形成。例如,亦可如圖9所示僅集管突出部22之外側之第3熔接部62於集管5之周向斷續性地形成。另外,亦可為熔接部60、61之至少任一者於集管5之周向斷續性地形成。
以上,一面參照隨附圖式一面對本發明之較佳之實施形態進行了說明,但本發明並不限定於該例。只要為業者,則明白可於申請專利範圍所記載之思想之範疇內,想到各種變更例或修正例,且瞭解其等亦當然屬於本發明之技術性範圍。
例如,於以上之實施形態中,集管5之集管突出部22之構造、或筒狀容器2之內側突出部50與外側突出部51之構造並不限定於此。例如,集管5之集管突出部22、或筒狀容器2之內側突出部50與外側突出部51係遍及中空絲膜模組1之全周而環狀地形成,但既可於中空絲膜模組1之周向之複數個部位斷續性地形成,亦可僅於一部分形成。又,筒狀容器2、集管5之整體構造亦並不限定於此。中空絲膜模組1之用途並不限定於血液等液體
處理,亦可為氣體之處理。
以下,列舉具體性之實施例與比較例進行說明,但本發明並不限定於以下之實施例。
進行下述之各實施例、比較例中所獲得之中空絲膜模組之X射線CT測定,於通過中空絲膜模組1之中心軸P之觀察剖面中,求出配置於集管或筒狀容器之過盈部相互衝突、集管與筒狀容器熔合或相互重合之部分之截面面積(熔接部面積總和)。
按照下述順序進行耐壓強度試驗。使鑽孔器自下述各實施例、比較例中所獲得之中空絲膜模組之集管之噴嘴部進入,於灌封樹脂固定部之一部分形成貫通孔,自集管之噴嘴部、筒狀容器之埠填充水,於集管之噴嘴部2部位與筒狀容器之埠安裝栓體。然後,自筒狀容器之埠使用水壓式泵注入水,以每次0.1MPa進行加壓,測定觀察到熔接部或中空絲膜模組破損之前之壓力。加壓係進行至成為最大2.0MPa為止。
製成如圖2所示之中空絲膜模組1。集管5與筒狀容器2之成形使用聚丙烯系樹脂。為了形成第1熔接部60,而於集管5之基部30之內周面30a設置遍及全周之共用接頭形狀之過盈部,為了形成第2熔接部61,而於筒狀容器2之內側突出部50之外周面50b設置遍及全周之共用接頭形狀之過盈部,為了形成第3熔接部62,而於筒狀容器2之外側突出部51之內周面51a設置遍及全周之共用接頭形狀之過盈部。
於大氣下對筒狀容器2之兩端部之內周面50a進行電暈處理之後,插入將內徑200μm、膜厚43μm之中空絲膜7,700條捆束而成之中空絲膜束3,進行灌封樹脂之注入、離心旋轉、固化保管,將中空絲膜束3於筒狀容器2之兩端部包埋固定而成型灌封樹脂固定部4。將自筒狀容器2之兩端部突出之灌封樹脂固定部4遍及全周而均勻地切斷,將中空絲膜束3之端部開口。此時之灌封樹脂固定部切斷面4S之高度之平均值為0.7mm。
於確認到於上述灌封樹脂固定部4被切斷之筒狀容器2組合集管5,且將集管突出部22插入至筒狀容器2之內側突出部50與外側突出部51之間的狀態之後,於頻率20kHz、加壓力0.3MPa、熔接時間0.15秒、保持時間0.5秒之條件下進行超音波熔接。
使用如此獲得之中空絲膜模組1,實施上述耐壓強度試驗。於第1熔接部60、第2熔接部61及第3熔接部62全部於周向連續性地形成之實施例1中,加壓至最大2.0MPa為止,但未導致熔接部60至62及中空絲膜模組1破損。
除了如表1所記載般改變第1至第3熔接部之有無、各熔接部之周向之連續性之有無以外,與實施例1同樣地製成中空絲膜模組1,實施該所獲得之中空絲膜模組1之耐壓強度試驗。該中空絲膜模組1之評估結果示於表1。
除了不於筒狀容器2之內側突出部50及外側突出部51設置過盈部以外,即除了不設置第2熔接部與第3熔接部以外,與實施例1同樣地製成中空絲膜模組1,實施該所獲得之中空絲膜模組1之耐壓強度試驗。該中空絲
膜模組1之評估結果示於表1。
除了不於集管5之基部30之內周面30a設置過盈部,而且不於筒狀容器2之外側突出部51設置過盈部以外,即除了不設置第1熔接部與第3熔接部以外,與實施例1同樣地製成中空絲膜模組1,實施該所獲得之中空絲膜模組1之耐壓強度試驗。該中空絲膜模組1之評估結果示於表1。
除了不於集管5之基部30之內周面30a設置過盈部,而且不於筒狀容器2之內側突出部50設置過盈部以外,即除了不設置第1熔接部與第2熔接部以外,與實施例1同樣地製成中空絲膜模組1,實施該所獲得之中空絲膜模組1之耐壓強度試驗。該中空絲膜模組1之評估結果示於表1。
本發明係於提高中空絲膜模組之耐壓強度時有用。
本申請案係基於2016年3月31日申請之日本專利申請案編號2016-073294者,且將其記載內容引用於此。
Claims (24)
- 一種中空絲膜模組,其具有:筒狀容器,其收容中空絲膜束;集管,其設置於上述筒狀容器之兩端部,且具有流體之出入口;及灌封部,其將上述中空絲膜束於上述筒狀容器之兩端部包埋固定;上述集管具有向上述筒狀容器側突出之集管突出部,上述筒狀容器具有向上述集管側雙層地突出之內側突出部與外側突出部,上述集管與上述筒狀容器係於將上述集管突出部插入至上述筒狀容器之內側突出部與外側突出部之間的狀態下藉由超音波熔接而熔接,上述集管突出部與上述筒狀容器之內側突出部係於至少一部位以上之區域熔接,且上述集管突出部與上述筒狀容器之外側突出部係於至少一部位以上之區域熔接。
- 如請求項1之中空絲膜模組,其中上述集管突出部與上述筒狀容器之外側突出部之熔接部之位置的至少一部位,及上述集管突出部與上述筒狀容器之內側突出部之熔接部之位置的至少一部位係於上述筒狀容器之長度方向上大致相同之位置。
- 如請求項1之中空絲膜模組,其中上述集管突出部與上述筒狀容器之內側突出部之熔接部係形成於在上述筒狀容器之長度方向上不同之複數個部位,且於上述不同之熔接部之間,存在上述集管與上述筒狀容器相互不接觸之區域。
- 如請求項2之中空絲膜模組,其中上述集管突出部與上述筒狀容器之內側突出部之熔接部係形成於在上述筒狀容器之長度方向上不同之複數個部位,且於上述不同之熔接部之間,存在上述集管與上述筒狀容器相互不接觸之區域。
- 如請求項1之中空絲膜模組,其中於上述集管突出部與上述筒狀容器之內側突出部之熔接部,及上述集管突出部與上述筒狀容器之外側突出部之熔接部之間,存在上述集管與上述筒狀容器相互不接觸之區域。
- 如請求項2之中空絲膜模組,其中於上述集管突出部與上述筒狀容器之內側突出部之熔接部,及上述集管突出部與上述筒狀容器之外側突出部之熔接部之間,存在上述集管與上述筒狀容器相互不接觸之區域。
- 如請求項3之中空絲膜模組,其中於上述集管突出部與上述筒狀容器之內側突出部之熔接部,及上述集管突出部與上述筒狀容器之外側突出部之熔接部之間,存在上述集管與上述筒狀容器相互不接觸之區域。
- 如請求項4之中空絲膜模組,其中於上述集管突出部與上述筒狀容器之內側突出部之熔接部,及上述集管突出部與上述筒狀容器之外側突出部之熔接部之間,存在上述集管與上述筒狀容器相互不接觸之區域。
- 如請求項1至8中任一項之中空絲膜模組,其中上述集管突出部與上述筒狀容器之內側突出部之熔接部之至少一部位,或者上述集管突出部與上述筒狀容器之外側突出部之熔接部之至少一部位,係遍及集管之周向之全周而連續性地熔接。
- 如請求項1至8中任一項之中空絲膜模組,其中上述筒狀容器之內側突出部與上述集管突出部係於兩部位之區域熔接,上述筒狀容器之外側突出部與上述集管突出部係於一部位之區域熔接。
- 如請求項9之中空絲膜模組,其中上述筒狀容器之內側突出部與上述集管突出部係於兩部位之區域熔接,上述筒狀容器之外側突出部與上述集管突出部係於一部位之區域熔接。
- 如請求項1至8中任一項之中空絲膜模組,其中於上述灌封部之兩端面,形成有將灌封部之兩端部於徑向切斷而形成之灌封部切斷面,上述灌封部切斷面與上述集管之內側面接觸。
- 如請求項9之中空絲膜模組,其中於上述灌封部之兩端面,形成有將灌封部之兩端部於徑向切斷而形成之灌封部切斷面,上述灌封部切斷面與上述集管之內側面接觸。
- 如請求項10之中空絲膜模組,其中於上述灌封部之兩端面,形成有將灌封部之兩端部於徑向切斷而形成之灌封部切斷面,上述灌封部切斷面與上述集管之內側面接觸。
- 如請求項11之中空絲膜模組,其中於上述灌封部之兩端面,形成有將灌封部之兩端部於徑向切斷而形成之灌封部切斷面,上述灌封部切斷面與上述集管之內側面接觸。
- 如請求項1至8中任一項之中空絲膜模組,其中上述集管及上述筒狀容器包含聚丙烯系樹脂。
- 如請求項9之中空絲膜模組,其中上述集管及上述筒狀容器包含聚丙烯系樹脂。
- 如請求項10之中空絲膜模組,其中上述集管及上述筒狀容器包含聚丙烯系樹脂。
- 如請求項11之中空絲膜模組,其中上述集管及上述筒狀容器包含聚丙烯系樹脂。
- 如請求項12之中空絲膜模組,其中上述集管及上述筒狀容器包含聚丙烯系樹脂。
- 如請求項13之中空絲膜模組,其中上述集管及上述筒狀容器包含聚丙烯系樹脂。
- 如請求項14之中空絲膜模組,其中上述集管及上述筒狀容器包含聚丙烯系樹脂。
- 如請求項15之中空絲膜模組,其中上述集管及上述筒狀容器包含聚丙烯系樹脂。
- 一種中空絲膜模組之製造方法,該中空絲膜模組具有:筒狀容器,其收容中空絲膜束;集管,其設置於上述筒狀容器之兩端部,且具有流體之出入口;及灌封部,其將上述中空絲膜束於上述筒狀容器之兩端部包埋固定;且該中空絲膜模組之製造方法具有如下步驟:以上述集管具有向上述筒狀容器側突出之集管突出部,且上述筒狀容器具有向上述集管側突出之雙層之內側突出部與外側突出部的方式形成集管;及將上述集管與上述筒狀容器於將上述集管突出部插入至上述筒狀容器之內側突出部與上述筒狀容器之外側突出部之間的狀態下藉由超音波熔接而熔接;於上述熔接步驟中,將上述集管突出部與上述筒狀容器之內側突出部、及上述集管突出部與上述筒狀容器之外側突出部分別於至少一部位以上之區域熔接。
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CN113546231B (zh) * | 2021-06-11 | 2023-08-15 | 中聚科技股份有限公司 | 一种高耐久的超声结构焊接及血液净化器 |
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