TWI754091B - 人工皮革及其製造方法 - Google Patents

人工皮革及其製造方法 Download PDF

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TWI754091B
TWI754091B TW107127579A TW107127579A TWI754091B TW I754091 B TWI754091 B TW I754091B TW 107127579 A TW107127579 A TW 107127579A TW 107127579 A TW107127579 A TW 107127579A TW I754091 B TWI754091 B TW I754091B
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thermoplastic polyurethane
polyurethane fiber
layer
tpu
fiber web
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TW202007814A (zh
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林至逸
鄭國光
楊高隆
傅永裕
廖偉傑
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三芳化學工業股份有限公司
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Priority to TW107127579A priority Critical patent/TWI754091B/zh
Priority to US16/533,727 priority patent/US10968564B2/en
Priority to EP19190342.6A priority patent/EP3608098B1/en
Publication of TW202007814A publication Critical patent/TW202007814A/zh
Priority to US17/190,290 priority patent/US11505895B2/en
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    • D06N3/14Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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Abstract

本發明係關於一種人工皮革及其製造方法。該人工皮革之製造方法包括:提供熱塑性聚氨酯(TPU)酯粒;加熱熔融熱塑性聚氨酯(TPU)酯粒;熔噴已熔融之熱塑性聚氨酯,以形成一第一熱塑性聚氨酯纖維網層;熔噴已熔融之熱塑性聚氨酯,以形成一第二熱塑性聚氨酯纖維網層於該第一熱塑性聚氨酯纖維網層上,且形成多層熱塑性聚氨酯(TPU)纖維網層結構物;及熱壓該多層熱塑性聚氨酯纖維網層結構物,以製得人工皮革。

Description

人工皮革及其製造方法
本發明關於一種人工皮革及其製造方法。
習知製造多層人工皮革普遍會採用多種不同製程,且部分製程中需使用溶劑,如含浸樹脂或纖維溶除的製程。然而,上述製法不僅會使得製造工序更加複雜,亦不符合環保需求。
因此,有必要提供一創新且具進步性之環保人工皮革及其製造方法,以解決上述習知缺失。
本發明係關於一種人工皮革。在一實施例中,該人工皮革包括:多層熱塑性聚氨酯(TPU)纖維網層,該等熱塑性聚氨酯纖維網層之纖維細度範圍為5μm至30μm。
本發明係關於一種人工皮革之製造方法。在一實施例中,該人工皮革之製造方法包括以下步驟:提供熱塑性聚氨酯(TPU)酯粒;加熱熔融熱塑性聚氨酯(TPU)酯粒;熔噴已熔融之熱塑性聚氨酯,以形成一第一熱塑性聚氨酯纖維網層;熔噴已熔融之熱塑性聚氨酯,以形成一第二熱塑性聚氨酯纖維網層於該第一熱塑性聚氨酯纖維網層上,且形成多層熱塑性聚氨酯(TPU)纖維網層結構物;及熱壓該多層熱塑性聚氨酯纖維網層結構物,以製得人工皮革。
參閱圖1,其係顯示本發明一實施例人工皮革之結構示意圖。在一實施例中,本發明之人工皮革10包括多層熱塑性聚氨酯(TPU)纖維網層11、12,該等熱塑性聚氨酯纖維網層11、12之纖維細度範圍為5μm至30μm,該等熱塑性聚氨酯纖維網層11、12包括一表面熱塑性聚氨酯纖維網層12。本發明之人工皮革10可應用於鞋面材料,或可應用於運動鞋之鞋面材料,但不以上述為限。
在一實施例中,該等熱塑性聚氨酯纖維網層包括一第一熱塑性聚氨酯纖維網層11及一第二熱塑性聚氨酯纖維網層12。該第一熱塑性聚氨酯纖維網層11之纖維細度範圍為10μm至30μm,該第二熱塑性聚氨酯纖維網層12之纖維細度範圍為5μm至10μm。該第二熱塑性聚氨酯纖維網層12設置於該第一熱塑性聚氨酯纖維網層11上,該第二熱塑性聚氨酯纖維網層12為該表面熱塑性聚氨酯纖維網層。
在一實施例中,該第二熱塑性聚氨酯纖維網層12具有一表面121,該表面121可具有一紋路,或該表面121可具有一起毛結構。因此,本發明之該人工皮革10能具有起毛皮革手感或紋路之美觀效果。
在一實施例中,本發明之人工皮革10之該等熱塑性聚氨酯纖維網層之剝離強度大於2.5Kg/cm,可克服習知運動鞋之鞋面材料不能達到高剝離強度之缺點。
在一實施例中,本發明之人工皮革10另包括至少一結合介面111,形成於二相鄰之熱塑性聚氨酯纖維網層11、12之間。因該等熱塑性聚氨酯纖維網層為相同的熱塑性聚氨酯材質,且係以熔噴方式堆疊形成該等熱塑性聚氨酯纖維網層,於熔噴及堆疊的過程中,二相鄰之熱塑性聚氨酯纖維網層之間會形成一結合介面111,使得二相鄰之熱塑性聚氨酯纖維網層結合更加穩固,可提高該等熱塑性聚氨酯纖維網層之剝離強度。
在一實施例中,該等熱塑性聚氨酯纖維網層包括一第一熱塑性聚氨酯纖維網層、一第二熱塑性聚氨酯纖維網層及一第三熱塑性聚氨酯纖維網層。該第一熱塑性聚氨酯纖維網層之纖維細度範圍為10μm至30μm,該第二熱塑性聚氨酯纖維網層之纖維細度範圍為10μm至30μm,該第三熱塑性聚氨酯纖維網層之纖維細度範圍為5μm至10μm,該第三熱塑性聚氨酯纖維網層為該表面熱塑性聚氨酯纖維網層。該第二熱塑性聚氨酯纖維網層設置於該第一熱塑性聚氨酯纖維網層上,該第三熱塑性聚氨酯纖維網層設置於該第二熱塑性聚氨酯纖維網層上。
因此,利用該表面熱塑性聚氨酯纖維網層之纖維細度範圍與其他熱塑性聚氨酯纖維網層之纖維細度範圍不同,且該表面熱塑性聚氨酯纖維網層之纖維細度範圍為5μm至10μm,可使本發明之人工皮革10之該等熱塑性聚氨酯纖維網層之剝離強度提高至大於2.5Kg/cm,較佳可為3Kg/cm,以達到鞋面材料之高剝離強度標準。
圖2顯示本發明一實施例人工皮革之製造方法流程示意圖。圖3顯示本發明一實施例人工皮革之製造設備示意圖。配合參考圖2及圖3,以說明利用人工皮革製造設備30製造本發明之人工皮革之製造方法。首先參考步驟S21,提供熱塑性聚氨酯(TPU)酯粒37、38、39。在一實施例中,熱塑性聚氨酯(TPU)酯粒包括:熔點118度及蕭式(shore)硬度90A之TPU酯粒、熔點70度及蕭式硬度90A之TPU酯粒、熔點192度及蕭式硬度90A之TPU酯粒,但不以上述為限。
參考步驟S22,加熱熔融熱塑性聚氨酯(TPU)酯粒,在一實施例中,係利用一押出機31熔融熱塑性聚氨酯(TPU)酯粒為熔融態之熱塑性聚氨酯,該押出機31之熔融溫度為190℃-230℃。
參考步驟S23,熔噴已熔融之熱塑性聚氨酯,以形成一第一熱塑性聚氨酯纖維網層11,在一實施例中,利用一熔噴模頭M1及一加壓空氣將已熔融之熱塑性聚氨酯噴出。較佳地,該熔噴模頭M1之溫度為220-240℃,該加壓空氣之空氣壓力及空氣溫度分別為6-8 kgf/cm2 及220-250℃。
在一實施例中,該第一熱塑性聚氨酯纖維網層11可熔噴於一離形紙41上,該離形紙41具有一紋路,該第一熱塑性聚氨酯纖維網層11之纖維細度範圍為5μm至10μm。
在一實施例中,可熔噴已熔融之熱塑性聚氨酯於一孔洞輸送帶34,將熱塑性聚氨酯(TPU)纖維堆積成網,並藉由該孔洞輸送帶34釋放風壓,以形成該第一熱塑性聚氨酯纖維網層,該第一熱塑性聚氨酯纖維網層之纖維細度範圍為10μm至30μm。
參考步驟S24,熔噴已熔融之熱塑性聚氨酯,以形成一第二熱塑性聚氨酯纖維網層12於該第一熱塑性聚氨酯纖維網層11上,且形成多層熱塑性聚氨酯(TPU)纖維網層結構物。在一實施例中,利用一熔噴模頭M2及一加壓空氣將已熔融之熱塑性聚氨酯噴出。較佳地,該熔噴模頭M2之溫度為220-240℃,該加壓空氣之空氣壓力及空氣溫度分別為6-8 kgf/cm2 及220-250℃。
在一實施例中,該第二熱塑性聚氨酯纖維網層12之纖維細度範圍為5μm至10μm。該第二熱塑性聚氨酯纖維網層12為該表面熱塑性聚氨酯纖維網層。
在一實施例中,該第二熱塑性聚氨酯纖維網層12之纖維細度範圍為10μm至30μm,該第二熱塑性聚氨酯纖維網層不是該表面熱塑性聚氨酯纖維網層。本發明之人工皮革之製造方法另包括一熔噴已熔融之熱塑性聚氨酯,以形成一第三熱塑性聚氨酯纖維網層13於該第二熱塑性聚氨酯纖維網層12上之步驟,該第三熱塑性聚氨酯纖維網層13之纖維細度範圍為5μm至10μm。該第三熱塑性聚氨酯纖維網層為該表面熱塑性聚氨酯纖維網層。該多層熱塑性聚氨酯纖維網層結構物包括:該第一熱塑性聚氨酯纖維網層11、該第二熱塑性聚氨酯纖維網層12及第三熱塑性聚氨酯纖維網層13於
參考步驟S25,熱壓該多層熱塑性聚氨酯纖維網層結構物,以製得人工皮革。在一實施例中,利用一熱壓輪35熱壓該多層熱塑性聚氨酯(TPU)纖維網層結構物,該熱壓輪35可具有一表面紋路,以使該表面熱塑性聚氨酯纖維網層(該第二熱塑性聚氨酯纖維網層或該第三熱塑性聚氨酯纖維網層)具有該表面紋路。
在一實施例中,本發明之人工皮革之製造方法另包括一研磨步驟,利用一研磨機對該表面熱塑性聚氨酯纖維網層(該第二熱塑性聚氨酯纖維網層或該第三熱塑性聚氨酯纖維網層)進行表面研磨,以使該表面熱塑性聚氨酯纖維網層(該第二熱塑性聚氨酯纖維網層或該第三熱塑性聚氨酯纖維網層)形成一起毛結構。
在一實施例中,本發明之人工皮革之製造方法另包括設置一熱塑性聚氨酯薄膜於該第二熱塑性聚氨酯纖維網層上之步驟。該熱壓該多層熱塑性聚氨酯纖維網層結構物之步驟包括利用一熱壓輪熱壓該多層熱塑性聚氨酯(TPU)纖維網層結構物,該熱壓輪具有一表面紋路,以使該熱塑性聚氨酯薄膜具有該表面紋路。
本發明人工皮革之製造方法僅以單一熔噴製程即可製得人工皮革,大幅簡化了人工皮革之製造工序,且熔噴製程中完全沒有使用溶劑,符合環保需求。此外,本發明之該第一熱塑性聚氨酯纖維網層及該第二熱塑性聚氨酯纖維網層皆使用熱塑性聚氨酯(TPU),而熱塑性聚氨酯(TPU)為不含溶劑之環保材質,可回收使用。並且,本發明利用熔噴製程將相同材質之熱塑性聚氨酯纖維網層堆疊,可大幅提高人工皮革之剝離強度。
茲以下列實例予以詳細說明本發明,唯並不意謂本發明僅侷限於此等實例所揭示之內容。
[ 發明例 1]
配合參閱圖2及圖3,將熔點118℃、蕭式硬度90A之TPU酯粒37投入押出機31熔融,溫度設定從入料區到出料區依序為190℃、210℃、220℃及230℃,熔融後送入熔噴模頭M1,熔噴模頭M1之溫度設定為230℃,同時在熔噴模頭M1處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為240℃,並送入熔噴模頭M1,在空氣噴出的同時,將熔融態的TPU噴出,使TPU形成纖維,然後再熔噴於有紋路的離形紙41上,將纖維堆積成網,並直接轉印該離型紙的紋路,形成第一熱塑性聚氨酯纖維網層11。該第一熱塑性聚氨酯纖維網層11之纖維細度範圍為5μm至10μm。該第一熱塑性聚氨酯纖維網層11為該表面熱塑性聚氨酯纖維網層,且具有紋路。
將熔點70℃、蕭式硬度90A之TPU酯粒38投入押出機32熔融,溫度設定從入料區到出料區依序為190℃,210℃,210℃,220℃,熔融後送入熔噴模頭M2,熔噴模頭M2之溫度設定為230℃,同時在熔噴模頭M2處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為240℃,並送入熔噴模頭M2,在空氣噴出的同時,將熔融態的TPU噴出,以形成第二熱塑性聚氨酯纖維網層12於第一熱塑性聚氨酯纖維網層11上,該第二熱塑性聚氨酯纖維網層12之纖維細度範圍為10μm至30μm。
將熔點192℃、蕭式硬度90A之TPU酯粒39投入押出機33熔融,溫度設定從入料區到出料區依序為195℃,220℃,230℃,240℃,熔融後送入熔噴模頭M3,熔噴模頭M3之溫度設定為230℃,同時在熔噴模頭M3處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為240℃,並送入熔噴模頭M3,在空氣噴出的同時,將熔融態的TPU噴出,以形成第三熱塑性聚氨酯纖維網層13於該第二熱塑性聚氨酯纖維網層12上,該第三熱塑性聚氨酯纖維網層13之纖維細度範圍為10μm至30μm。該第一熱塑性聚氨酯纖維網層11、該第二熱塑性聚氨酯纖維網層12及該第三熱塑性聚氨酯纖維網層13形成該多層熱塑性聚氨酯纖維網層結構物。
接著,利用溫度為145℃之熱壓輪35熱壓該多層熱塑性聚氨酯纖維網層結構物,以控制厚度與平坦度。並且,由於該第二熱塑性聚氨酯纖維網層12為熔點70℃的熱塑性聚氨酯,經熱壓輪35熔融後,可將第一熱塑性聚氨酯纖維網層11與第三熱塑性聚氨酯纖維網層13之間的剝離強度提高,使其大於2.5 Kg/cm以上。
[ 發明例 2]
配合參閱圖2及圖3,將熔點192℃、蕭式硬度90A之TPU酯粒37投入押出機31熔融,溫度設定從入料區到出料區依序為195℃,220℃,230℃,240℃,熔融後送入熔噴模頭M1,熔噴模頭M1之溫度設定為240℃,同時在熔噴模頭M1處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為240℃,並送入熔噴模頭M1,在空氣噴出的同時,將熔融態的TPU噴出,使TPU形成纖維,接著,使用孔洞輸送帶34將TPU纖維堆積成網,並藉由孔洞輸送帶34釋放高速風壓,以形成第一熱塑性聚氨酯纖維網層11。該第一熱塑性聚氨酯纖維網層11之纖維細度範圍為10μm至30μm。
將熔點70℃、蕭式硬度90A之TPU酯粒38投入押出機32熔融,溫度設定從入料區到出料區依序為189℃,211℃,210℃,223℃,熔融後送入熔噴模頭M2,熔噴模頭M2之溫度設定為240℃,同時在熔噴模頭M2處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為240℃,並送入熔噴模頭M2,在空氣噴出的同時,將熔融態的TPU噴出,以形成第二熱塑性聚氨酯纖維網層12於第一熱塑性聚氨酯纖維網層11上,該第二熱塑性聚氨酯纖維網層12之纖維細度範圍為10μm至30μm。
將熔點192℃、蕭式硬度90A之TPU酯粒39投入押出機33熔融,溫度設定從入料區到出料區依序為195℃,223℃,232℃,240℃,熔融後送入熔噴模頭M3,熔噴模頭M3之溫度設定為240℃,同時在熔噴模頭M3處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為240℃,並送入熔噴模頭M3,在空氣噴出的同時,將熔融態的TPU噴出,以形成第三熱塑性聚氨酯纖維網層13於該第二熱塑性聚氨酯纖維網層12上,該第三熱塑性聚氨酯纖維網層13之纖維細度範圍為5μm至10μm。該第一熱塑性聚氨酯纖維網層11、該第二熱塑性聚氨酯纖維網層12及該第三熱塑性聚氨酯纖維網層13形成該多層熱塑性聚氨酯纖維網層結構物。該第三熱塑性聚氨酯纖維網層13為該表面熱塑性聚氨酯纖維網層。
接著,利用溫度為145℃之熱壓輪35熱壓該多層熱塑性聚氨酯纖維網層結構物,以控制厚度與平坦度。並且,由於該第二熱塑性聚氨酯纖維網層12為熔點70℃的熱塑性聚氨酯,經熱壓輪35熔融後,可將第一熱塑性聚氨酯纖維網層11與第三熱塑性聚氨酯纖維網層13之間的剝離強度提高,使其大於2.5 Kg/cm以上。
最後,以80mesh/160mesh/400mesh的研磨機對第三熱塑性聚氨酯纖維網層13進行表面研磨後,即可製得一起毛人工皮革。
[ 發明例 3]
配合參閱圖2及圖3,將熔點118℃、蕭式硬度90A之TPU酯粒37投入押出機31熔融,溫度設定從入料區到出料區依序為189℃,211℃,223℃,232℃,熔融後送入熔噴模頭M1,熔噴模頭M1之溫度設定為230℃,同時在熔噴模頭M1處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為239℃,並送入熔噴模頭M1,在空氣噴出的同時,將熔融態的TPU噴出,使TPU形成纖維,接著,使用孔洞輸送帶34將TPU纖維堆積成網,並藉由孔洞輸送帶34釋放高速風壓,以形成第一熱塑性聚氨酯纖維網層11。該第一熱塑性聚氨酯纖維網層11之纖維細度範圍為10μm至30μm。
將熔點70℃、蕭式硬度90A之TPU酯粒38投入押出機32熔融,溫度設定從入料區到出料區依序為189℃,200℃,212℃,220℃,熔融後送入熔噴模頭M2,熔噴模頭M2之溫度設定為230℃,同時在熔噴模頭M2處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為239℃,並送入熔噴模頭M2,在空氣噴出的同時,將熔融態的TPU噴出,以形成第二熱塑性聚氨酯纖維網層12於第一熱塑性聚氨酯纖維網層11上,該第二熱塑性聚氨酯纖維網層12之纖維細度範圍為10μm至30μm。
將熔點192℃、蕭式硬度90A之TPU酯粒39投入押出機33熔融,溫度設定從入料區到出料區依序為195℃,220℃,230℃,240℃,熔融後送入熔噴模頭M3,熔噴模頭M3之溫度設定為230℃,同時在熔噴模頭M3處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為239℃,並送入熔噴模頭M3,在空氣噴出的同時,將熔融態的TPU噴出,以形成第三熱塑性聚氨酯纖維網層13於該第二熱塑性聚氨酯纖維網層12上,該第三熱塑性聚氨酯纖維網層13之纖維細度範圍為5μm至10μm。該第一熱塑性聚氨酯纖維網層11、該第二熱塑性聚氨酯纖維網層12及該第三熱塑性聚氨酯纖維網層13形成該多層熱塑性聚氨酯纖維網層結構物。該第三熱塑性聚氨酯纖維網層13為該表面熱塑性聚氨酯纖維網層。
接著,利用溫度為145℃之熱壓輪35熱壓該多層熱塑性聚氨酯纖維網層結構物,以控制厚度與平坦度。該熱壓輪35具有一表面紋路,以使該第三熱塑性聚氨酯纖維網層13具有該表面紋路。並且,由於該第二熱塑性聚氨酯纖維網層12為熔點70℃的熱塑性聚氨酯,經熱壓輪35熔融後,可將第一熱塑性聚氨酯纖維網層11與第三熱塑性聚氨酯纖維網層13之間的剝離強度提高,使其大於2.5 Kg/cm以上。
[ 發明例 4]
配合參閱圖2及圖3,將熔點192℃、蕭式硬度90A之TPU酯粒37投入押出機31熔融,溫度設定從入料區到出料區依序為195℃,220℃,230℃,240℃,熔融後送入熔噴模頭M1,熔噴模頭M1之溫度設定為240℃,同時在熔噴模頭M1處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為240℃,並送入熔噴模頭M1,在空氣噴出的同時,將熔融態的TPU噴出,使TPU形成纖維,接著,使用孔洞輸送帶34將TPU纖維堆積成網,並藉由孔洞輸送帶34釋放高速風壓,以形成第一熱塑性聚氨酯纖維網層11。該第一熱塑性聚氨酯纖維網層11之纖維細度範圍為10μm至30μm。
將熔點70℃、蕭式硬度90A之TPU酯粒38投入押出機32熔融,溫度設定從入料區到出料區依序為189℃,200℃,212℃,220℃,熔融後送入熔噴模頭M2,熔噴模頭M2之溫度設定為240℃,同時在熔噴模頭M2處,連接一加壓空氣,該加壓空氣之空氣壓力為7 kgf/cm2 ,同時將空氣進行加熱,加熱溫度設定為240℃,並送入熔噴模頭M2,在空氣噴出的同時,將熔融態的TPU噴出,以形成第二熱塑性聚氨酯纖維網層12於第一熱塑性聚氨酯纖維網層11上,該第二熱塑性聚氨酯纖維網層12之纖維細度範圍為5μm至10μm。
將一熱塑性聚氨酯薄膜設置於該第二熱塑性聚氨酯纖維網層12上,該熱塑性聚氨酯薄膜之厚度為0.05mm,該熱塑性聚氨酯薄膜使用與該第二熱塑性聚氨酯纖維網層相同之原料。該第一熱塑性聚氨酯纖維網層11、該第二熱塑性聚氨酯纖維網層12及該熱塑性聚氨酯薄膜形成該多層熱塑性聚氨酯纖維網層結構物。
接著,利用溫度為145℃之熱壓輪35熱壓該多層熱塑性聚氨酯纖維網層結構物,以控制厚度與平坦度。該熱壓輪35具有一表面紋路,以使該熱塑性聚氨酯薄膜具有該表面紋路。並且,由於該第二熱塑性聚氨酯纖維網層12為熔點70℃的熱塑性聚氨酯,經熱壓輪35熔融後,可將第一熱塑性聚氨酯纖維網層11與熱塑性聚氨酯薄膜之間的剝離強度提高,使其大於2.5 Kg/cm以上。
上述實施例僅為說明本發明之原理及其功效,而非限制本發明。習於此技術之人士對上述實施例所做之修改及變化仍不違背本發明之精神。本發明之權利範圍應如後述之申請專利範圍所列。
10‧‧‧人工皮革11‧‧‧第一熱塑性聚氨酯纖維網層12‧‧‧第二熱塑性聚氨酯纖維網層13‧‧‧第三熱塑性聚氨酯纖維網層111‧‧‧結合介面121‧‧‧表面30‧‧‧人工皮革製造設備31、32、33‧‧‧押出機34‧‧‧孔洞輸送帶35‧‧‧熱壓輪37、38、39‧‧‧熱塑性聚氨酯(TPU)酯粒41‧‧‧離形紙M1、M2、M3‧‧‧熔噴模頭S21~S25‧‧‧步驟
圖1顯示本發明一實施例人工皮革之結構示意圖。
圖2顯示本發明一實施例人工皮革之製造方法流程示意圖。
圖3顯示本發明一實施例人工皮革之製造設備示意圖。
S21~S25‧‧‧步驟

Claims (13)

  1. 一種人工皮革,包括:多層熱塑性聚氨酯(TPU)纖維網層,該等熱塑性聚氨酯纖維網層之纖維細度範圍為5μm至30μm,且該等熱塑性聚氨酯纖維網層之剝離強度大於2.5Kg/cm,該等熱塑性聚氨酯纖維網層包括一第一熱塑性聚氨酯纖維網層、一第二熱塑性聚氨酯纖維網層及一第三熱塑性聚氨酯纖維網層,該第一熱塑性聚氨酯纖維網層之纖維細度範圍為10μm至30μm,該第二熱塑性聚氨酯纖維網層設置於該第一熱塑性聚氨酯纖維網層上,該第二熱塑性聚氨酯纖維網層之纖維細度範圍為10μm至30μm,該第三熱塑性聚氨酯纖維網層設置於該第二熱塑性聚氨酯纖維網層上,該第三熱塑性聚氨酯纖維網層之纖維細度範圍為5μm至10μm,該第三熱塑性聚氨酯纖維網層為一表面熱塑性聚氨酯纖維網層;其中該等熱塑性聚氨酯纖維網層係以熱塑性聚氨酯(TPU)酯粒製造而成,熱塑性聚氨酯(TPU)酯粒包括:熔點118度及蕭式硬度90A之TPU酯粒、熔點70度及蕭式硬度90A之TPU酯粒、熔點192度及蕭式硬度90A之TPU酯粒。
  2. 如請求項1之人工皮革,另包括至少一結合介面,形成於二相鄰之熱塑性聚氨酯纖維網層之間。
  3. 一種人工皮革之製造方法,包括以下步驟:提供熱塑性聚氨酯(TPU)酯粒; 加熱熔融熱塑性聚氨酯(TPU)酯粒;熔噴已熔融之熱塑性聚氨酯,以形成一第一熱塑性聚氨酯纖維網層,該第一熱塑性聚氨酯纖維網層之纖維細度範圍為10μm至30μm;熔噴已熔融之熱塑性聚氨酯,以形成一第二熱塑性聚氨酯纖維網層於該第一熱塑性聚氨酯纖維網層上,該第二熱塑性聚氨酯纖維網層之纖維細度範圍為10μm至30μm,且形成多層熱塑性聚氨酯(TPU)纖維網層結構物;及熱壓該多層熱塑性聚氨酯纖維網層結構物,以製得人工皮革;其中熱塑性聚氨酯(TPU)酯粒包括:熔點118度及蕭式硬度90A之TPU酯粒、熔點70度及蕭式硬度90A之TPU酯粒、熔點192度及蕭式硬度90A之TPU酯粒。
  4. 如請求項3之人工皮革之製造方法,其中該加熱熔融熱塑性聚氨酯(TPU)酯粒之步驟係利用一押出機熔融,該押出機之熔融溫度為190℃-230℃。
  5. 如請求項3之人工皮革之製造方法,其中該熔噴已熔融之熱塑性聚氨酯之步驟係利用一熔噴模頭及一加壓空氣,將已熔融之熱塑性聚氨酯噴出。
  6. 如請求項5之人工皮革之製造方法,其中該第一熱塑性聚氨酯纖維網層熔噴於一離形紙上,該離形紙具有一紋路。
  7. 如請求項6之人工皮革之製造方法,另包括一熔噴已熔融之熱塑性聚氨酯,以形成一第三熱塑性聚氨酯纖維網層於該第二熱塑性聚氨酯纖維網層上之步驟,該第三熱塑性聚氨酯纖維網層之纖維細度範圍為10μm至30μm。
  8. 如請求項5之人工皮革之製造方法,其中熔噴已熔融之熱塑性聚氨酯於一孔洞輸送帶,將熱塑性聚氨酯(TPU)纖維堆積成網,並藉由該孔洞輸送帶釋放風壓,以形成該第一熱塑性聚氨酯纖維網層。
  9. 如請求項8之人工皮革之製造方法,另包括一熔噴已熔融之熱塑性聚氨酯,以形成一第三熱塑性聚氨酯纖維網層於該第二熱塑性聚氨酯纖維網層上之步驟,該第三熱塑性聚氨酯纖維網層之纖維細度範圍為5μm至10μm。
  10. 如請求項9之人工皮革之製造方法,另包括一研磨步驟,利用一研磨機對該第三熱塑性聚氨酯纖維網層進行表面研磨,以使該第三熱塑性聚氨酯纖維網層形成一起毛結構。
  11. 如請求項9之人工皮革之製造方法,其中該熱壓該多層熱塑性聚氨酯纖維網層結構物之步驟包括利用一熱壓輪熱壓該多層熱塑性聚氨酯(TPU)纖維網層結構物,該熱壓輪具有一表面紋路,以使該第三熱塑性聚氨酯纖維網層具有該表面紋路。
  12. 如請求項9之人工皮革之製造方法,另包括設置一熱塑性聚氨酯薄膜於該第二熱塑性聚氨酯纖維網層上之步驟。
  13. 如請求項12之人工皮革之製造方法,其中該熱壓該多層熱塑性聚氨酯纖維網層結構物之步驟包括利用一熱壓輪熱壓該多層熱塑性聚氨酯(TPU)纖維網層結構物,該熱壓輪具有一表面紋路,以使該熱塑性聚氨酯薄膜具有該表面紋路。
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