TW201830752A - 成形用包裝材及表面印刷所成的蓄電裝置之製造方法 - Google Patents

成形用包裝材及表面印刷所成的蓄電裝置之製造方法 Download PDF

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TW201830752A
TW201830752A TW107102388A TW107102388A TW201830752A TW 201830752 A TW201830752 A TW 201830752A TW 107102388 A TW107102388 A TW 107102388A TW 107102388 A TW107102388 A TW 107102388A TW 201830752 A TW201830752 A TW 201830752A
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Prior art keywords
resin layer
printing
packaging material
molding
resin
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TW107102388A
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English (en)
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TWI731211B (zh
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南堀勇二
中嶋大介
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日商昭和電工包裝股份有限公司
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Abstract

本發明提供一種成形用包裝材1，其係包含作為外側層之耐熱性樹脂層2、作為內側層之熱熔性樹脂層3、及配置於此等兩層間之金屬箔層4，其特徵係：於前述耐熱性樹脂層2之外側積層印刷改善樹脂層7之構成。藉由此構成，成形時及熱密封時，或高溫多濕等稍微嚴苛的環境下使用時，印刷處之墨水不會變模糊，且印刷部不因與溶劑等接觸而剝離。

Description

成形用包裝材及表面印刷所成的蓄電裝置之製造方法
本發明係關於成形用包裝材，其係例如適合作為筆記型電腦用、行動電話用、車載用、固定式之蓄電池(鋰離子蓄電池)使用、或適合作為食品之包裝材、醫藥品之包裝材使用，及表面印刷所成的蓄電裝置之製造方法以及使用前述成形用包裝材之成形外殼之製造方法。
於鋰離子蓄電池等之電池用之外裝材之外面，進行批號、QR碼(註冊商標)等之印刷者變多。上述印刷，使用染料墨水等之墨水進行。
例如，於電池外框進行染料墨水(油性染料墨水等)之印刷，且該印刷上貼附隱蔽性黏著標籤之電池組，其係前述隱蔽性黏著標籤為白色樹脂薄膜基材之一側的面具有白色墨水層，在另一面具有黑色墨水層及黏著劑層之構成為習知技術(專利文獻1)。
【先前技術文獻】 【專利文獻】
【專利文獻1】：日本特開2009-289533號公報
然而，於電池包裝材之外側樹脂層之外面，印刷批號、QR碼(註冊商標)等之情形有如下問題。
亦即，以前述包裝材包裝而成之電池，在高溫多濕等稍微嚴苛的環境下使用時，有上述印刷處之墨水變模糊的問題，或者亦有由於印刷部與溶劑等接觸而容易剝落之問題。前述種種問題，亦容易發生在包裝材之成形時或熱密封時。
本發明，係有鑑於相關的技術背景所成者，目的在於提供一種成形用包裝材、於表面印刷所成的蓄電裝置之製造方法及使用前述成形用包裝材之成形外殼之製造方法，其係即使在成形時及熱密封時，或者在高溫多濕等稍微嚴苛的環境下使用時，印刷處之墨水不會變模糊，且印刷部不因與溶劑等接觸而剝離。
為了達成前述目的，本發明提供以下技術手段。
〔1〕一種成形用包裝材，其係包含作為外側層之耐熱性樹脂層、作為內側層之熱熔性樹脂層、及配置於此等兩層間之金屬箔層，其特徵係：於前述耐熱性樹脂層之更外側積層印刷改善樹脂層。
〔2〕如前項1所記載之成形用包裝材，其中，前述印刷改善樹脂層係含有選自環氧樹脂、胺基甲酸樹脂、丙烯酸樹脂、甲基丙烯酸樹脂、丙烯酸酯樹脂、甲基丙烯酸酯樹脂、聚酯樹脂及聚乙烯亞胺樹脂所成群中1種或2種以上之樹脂。
〔3〕如前項1所記載之成形用包裝材，其中，前述印刷改善樹脂層係含有胺基甲酸樹脂及環氧樹脂。
〔4〕如前項3所記載之成形用包裝材，其中，前述印刷改善樹脂層中，前述胺基甲酸樹脂/前述環氧樹脂之含有質量比為98/2~40/60之範圍。
〔5〕如前項1所記載之成形用包裝材，其中，前述印刷改善樹脂層係含有選自丙烯酸酯樹脂及甲基丙烯酸酯樹脂所成群中1種或2種以上之丙烯酸樹脂，及環氧樹脂。
〔6〕如前項5所記載之成形用包裝材，其中，前述印刷改善樹脂層中，前述丙烯酸樹脂/前述環氧樹脂之含有質量比為98/2~40/60之範圍。
〔7〕如前項1~6中任1項所記載之成形用包裝材，其中，前述印刷改善樹脂層，係樹脂-水系乳膠塗佈於前述耐熱性樹脂層而形成之接著層。
〔8〕如前項1~7中任1項所記載之成形用包裝材，其中，前述耐熱性樹脂層，係以2軸延伸聚醯胺薄膜、2軸延伸聚萘二甲酸乙二醇酯薄膜、2軸延伸聚對苯二甲酸乙二酯薄膜或2軸延伸聚對苯二甲酸丁二酯薄膜所形成。
〔9〕如前項1~8中任1項所記載之成形用包裝材，其中，前述印刷改善樹脂層之外側之表面附著潤滑劑。
〔10〕如前項9所記載之成形用包裝材，其中，前述熱熔性樹脂層含有潤滑劑，且前述印刷改善樹脂層之外側表面之潤滑劑，係存在於前述熱熔性樹脂層之表面之潤滑劑，移轉至前述印刷改善樹脂層之外側表面者。
〔11〕一種成形外殼之製造方法，其特徵係將如前項1~10中任1項所記載之成形用包裝材深引伸成形或鼓脹成形者。
〔12〕一種電池外殼之製造方法，其特徵係將如前項1~10中任1項所記載之成形用包裝材深引伸成形或鼓脹成形者。
〔13〕一種表面印刷所成的蓄電裝置之製造方法，其特徵係包含：將前述熱熔性樹脂層含有潤滑劑之前項1~8中任1項所記載之成形用包裝材，以前述熱熔性樹脂層與前述印刷改善樹脂層接觸之態樣重疊成滾筒狀而得到滾筒體之步驟；從前述滾筒體拉出前述成形用包裝材，以該拉出的成形用包裝材外裝蓄電裝置本體部而得到蓄電裝置之步驟；於前述蓄電裝置之外裝狀態之成形用包裝材之印刷改善樹脂層之外側之表面進行印刷之印刷步驟。
〔14〕如前項13所記載之表面印刷所成的蓄電裝置之製造方法，其中，從前述滾筒體拉出的成形用包裝材之印刷改善樹脂層之外側之表面附著潤滑劑，且前述印刷改善樹脂層之外側表面之潤滑劑，係重疊成前述滾筒狀時存在於前述熱熔性樹脂層之表面之潤滑劑，移轉至前述 印刷改善樹脂層之外側表面者；前述印刷步驟中，在前述潤滑劑所附著之印刷改善樹脂層之外側表面進行前述印刷。
〔1〕之發明，由於耐熱性樹脂層之更外側積層印刷改善樹脂層，因此該成形用包裝材進行深引伸成形、鼓脹成形等之成形時，為了密封而熱密封包裝材時，印刷處之墨水不會變模糊，且印刷部不因與溶劑等接觸而剝離。或者即使在高溫多濕等稍微嚴苛的環境下使用時，印刷處之墨水不會變模糊，且印刷部不因與溶劑等接觸而剝離。
〔2〕之發明，由於印刷改善樹脂層係含有選自環氧樹脂、胺基甲酸樹脂、丙烯酸樹脂、甲基丙烯酸樹脂、丙烯酸酯樹脂、甲基丙烯酸酯樹脂、聚酯樹脂及聚乙烯亞胺樹脂所成群中1種或2種以上之樹脂所成之構成，因此在成形時、熱密封時、高溫多濕等稍微嚴苛的環境下之使用時等，可充分防止印刷處之墨水之模糊，亦可充分防止印刷部與溶劑等接觸而剝離。
〔3〕之發明，由於印刷改善樹脂層係含有胺基甲酸樹脂及環氧樹脂所成之構成，因此在成形時、熱密封時、高溫多濕等稍微嚴苛的環境下之使用時等，可進一步充分防止印刷處之墨水之模糊，亦可進一步充分防止印刷部與溶劑等接觸而剝離。
〔4〕之發明，由於胺基甲酸樹脂/環氧樹脂之含有質量比為98/2~40/60之範圍，因此在成形時、熱密封時、高溫多濕等 稍微嚴苛的環境下之使用時等，可更進一步充分防止印刷處之墨水之模糊，亦可更進一步充分防止印刷部與溶劑等接觸而剝離。
〔5〕之發明，由於印刷改善樹脂層係含有選自丙烯酸酯樹脂、甲基丙烯酸酯樹脂所成群中1種或2種以上之丙烯酸樹脂，及環氧樹脂所成之構成，因此在成形時、熱密封時、高溫多濕等稍微嚴苛的環境下之使用時等，可進一步充分防止印刷處之墨水之模糊，亦可進一步充分防止印刷部與溶劑等接觸而剝離。
〔6〕之發明，由於丙烯酸樹脂/前述環氧樹脂之含有質量比為98/2~40/60之範圍，因此在成形時、熱密封時、高溫多濕等稍微嚴苛的環境下之使用時等，可更進一步充分防止印刷處之墨水之模糊，亦可更進一步充分防止印刷部與溶劑等接觸而剝離。
〔7〕之發明，由於印刷改善樹脂層，係樹脂-水系乳膠塗佈於前述耐熱性樹脂層而形成之接著層，因此在成形時、熱密封時、高溫多濕等稍微嚴苛的環境下之使用時等，可更加充分防止印刷處之墨水之模糊，亦可更加充分防止印刷部與溶劑等接觸而剝離。
〔8〕之發明，由於耐熱性樹脂層，係以2軸延伸聚醯胺薄膜、2軸延伸聚萘二甲酸乙二醇酯薄膜、2軸延伸聚對苯二甲酸乙二酯薄膜或2軸延伸聚對苯二甲酸丁二酯薄膜所形成，因此可更加充分防止印刷處之墨水之模糊，亦可更加充分防止印刷部與溶劑等接觸而剝離。
〔9〕及〔10〕之發明，係印刷改善樹脂層之外側之表面附著潤滑劑，而關於在此種狀況之成形用包裝材之印刷改善樹脂層之外面進行批號、QR碼(註冊商標)等之印刷者，在成形時、熱密封時、高溫 多濕等稍微嚴苛的環境下之使用時等，可充分防止印刷處之墨水之模糊，亦可充分防止印刷部與溶劑等接觸而剝離。
又，於耐熱性樹脂層之表面直接附著潤滑劑之情形，亦即在附著該潤滑劑之耐熱性樹脂層之表面進行墨水印刷之情形，墨水難以固定，難以形成良好的印刷部(印刷層等)，但〔9〕及〔10〕之發明，係耐熱性樹脂層之外側所設置之印刷改善樹脂層之外側之表面附著潤滑劑之構成，中間即使存在潤滑劑，印刷改善樹脂層與墨水之親和性提高，因此印刷墨水不會被排斥(亦即印刷墨水推開潤滑劑)，印刷墨水良好地固定而可形成安定的印刷部(印刷層等)。
〔11〕之發明，可製造成形外殼，其不用說在熱密封時，即使在高溫多濕等稍微嚴苛的環境下使用時，可充分防止印刷處之墨水之模糊，亦可充分防止印刷部與溶劑等接觸而剝離。
〔12〕之發明，可製造電池外殼，其不用說在熱密封時，即使在高溫多濕等稍微嚴苛的環境下使用時，可充分防止印刷處之墨水之模糊，亦可充分防止印刷部與溶劑等接觸而剝離。
〔13〕及〔14〕之發明，可製造表面印刷之蓄電裝置，其係在成形時、熱密封時、高溫多濕等稍微嚴苛的環境下之使用時等，可防止印刷處之墨水之模糊，亦可防止印刷部與溶劑等接觸而剝離。
1‧‧‧成形用包裝材
2‧‧‧耐熱性樹脂層(外側層)
3‧‧‧熱熔性樹脂層(內側層)
4‧‧‧金屬箔層
7‧‧‧印刷改善樹脂層
11‧‧‧印刷部
30‧‧‧蓄電裝置(表面印刷所成之蓄電裝置)
31‧‧‧蓄電裝置本體部
【圖1】表示本發明之成形用包裝材之一實施型態之斷面圖。
【圖2】表示本發明之成形用包裝材之其他實施型態之斷面圖。
【圖3】表示本發明之表面印刷所成之蓄電裝置之成形用包裝材之一部分之斷面圖。
【圖4】表示表面印刷所成之蓄電裝置之一實施型態之斷面圖。
本發明之成形用包裝材1之一實施型態如圖1所示。該成形用包裝材1，係作為鋰離子蓄電池外殼用包材所使用者。亦即，前述成形用包裝材1，作為經過深引伸成形等之成形後之蓄電池外殼所使用者。
前述成形用包裝材1，耐熱性樹脂層(外側層)2於金屬箔層4之一側的面(上面)介由第1接著劑層5所積層一體化，且熱熔性樹脂層(內側層)3於前述金屬箔層4之另一側的面(下面)介由第2接著劑層6所積層一體化，於前述耐熱性樹脂層2之外側(前述耐熱性樹脂層2之前述金屬箔層4側的相反側)積層印刷改善樹脂層7所成之構成。本實施型態，於前述耐熱性樹脂層2之外面(前述耐熱性樹脂層2之前述金屬箔層4側的相反側之面)積層前述印刷改善樹脂層7(參照圖1)。此外，本實施型態，於前述耐熱性樹脂層2之外面，直接藉由凹版塗佈法塗佈樹脂組成物而積層前述印刷改善樹脂層7。
前述耐熱性樹脂層(外側層)2，係作為包裝材主要負責確保良好成形性之功能的部材，亦即負責防止因成形時之金屬箔之縮頸導致之斷破之功能。
構成前述耐熱性樹脂層(外側層)2之耐熱性樹脂，使用在 熱密封時之熱密封溫度不熔融成形用包裝材之耐熱性樹脂。前述耐熱性樹脂，使用具有比構成熱熔性樹脂層3之樹脂之熔點高10℃以上熔點之耐熱性樹脂為佳，使用具有比構成熱熔性樹脂層3之樹脂之熔點高20℃以上熔點之耐熱性樹脂為特佳。
前述耐熱性樹脂層(外側層)2，並無特別限定，例如，可列舉延伸尼龍薄膜等之延伸聚醯胺薄膜、延伸聚酯薄膜等。其中，前述耐熱性樹脂延伸薄膜層2，使用二軸延伸尼龍薄膜等之二軸延伸聚醯胺薄膜、二軸延伸聚對苯二甲酸丁二酯(PBT)薄膜、二軸延伸聚對苯二甲酸乙二酯(PET)薄膜或二軸延伸聚萘二甲酸乙二醇酯(PEN)薄膜為特佳。此外，前述耐熱性樹脂延伸薄膜層2，使用藉由同時2軸延伸法延伸之耐熱性樹脂二軸延伸薄膜為佳。此外，使用對於「T方向之熱水收縮率」之「M方向之熱水收縮率」之比(MD/TD)為0．9~1．1之範圍之耐熱性樹脂二軸延伸薄膜為佳。採用前述比(MD/TD)為0．9~1．1之範圍之構成之情形，可得到具有特別良好的成形性之包裝材。又，前述「M方向」意指「機械流向」，而前述「T方向」意指「對M方向正交之方向」。前述尼龍，雖無特別限定，但可列舉例如：6尼龍、6，6尼龍、MXD尼龍等。又，前述耐熱性樹脂層2，以單層(單一的延伸薄膜)形成亦可，或者，例如以延伸聚酯薄膜/延伸聚醯胺薄膜所構成之複層(延伸PET薄膜/延伸尼龍薄膜所構成之複層等)形成亦可。
又，前述耐熱性樹脂層(外側層)2，亦可為藉由塗佈耐熱性樹脂層而形成之樹脂層。
本發明中，前述耐熱性樹脂層2，係由熱水收縮率為2%~ 20%之耐熱性樹脂延伸薄膜所構成為佳。藉由熱水收縮率在2%以上，可防止成形時耐熱性樹脂層2局部的變形(伸長)，在高溫多濕等稍微嚴苛的環境下使用時等，可防止印刷部(印刷層等)7從耐熱性樹脂層2剝離，且藉由熱水收縮率在20%以下，進行深引伸成形或鼓脹成形等之成形時，可防止由於耐熱性樹脂層2之收縮而成形用包裝材之印刷部(印刷層等)7從耐熱性樹脂層2剝離。其中，前述耐熱性樹脂延伸薄膜，使用熱水收縮率為2．5~10%之耐熱性樹脂延伸薄膜為佳。進一步，使用熱水收縮率為3．0%~6．0%之耐熱性樹脂延伸薄膜為更佳，且更進一步使用熱水收縮率為3．0%~5．0%之耐熱性樹脂延伸薄膜為特佳。
其中，前述耐熱性樹脂延伸薄膜2，使用熱水收縮率為2~20%之2軸延伸聚醯胺薄膜、熱水收縮率為2~20%之2軸延伸聚萘二甲酸乙二醇酯(PEN)薄膜、熱水收縮率為2~20%之2軸延伸聚對苯二甲酸丁二酯(PBT)薄膜或熱水收縮率為2~20%之2軸延伸聚對苯二甲酸乙二酯(PET)薄膜為佳。在此情形，在成形時、熱密封時、高溫多濕等稍微嚴苛的環境下之使用時等，可進一步提高防止印刷部(印刷層等)11從印刷改善樹脂層7剝離之效果。
又，前述「熱水收縮率」係指將耐熱性樹脂延伸薄膜2之試驗片(10cm×10cm)浸漬於95℃之熱水中30分之浸漬前後之試驗片之延伸方向之尺寸變化率，由下式求得。
熱水收縮率(%)={(X-Y)/X}×100
X：浸漬處理前之延伸方向之尺寸
Y：浸漬處理後之延伸方向之尺寸。
又，採用2軸延伸薄膜之情形之該熱水收縮率，係2延伸方向之尺寸變化率之平均值。
前述耐熱性樹脂延伸薄膜之熱水收縮率，例如，可藉由調整延伸加工時之熱固定溫度來控制。
前述耐熱性樹脂層2之厚度，係在12μm~50μm為佳。使用聚酯樹脂之情形，厚度在12μm~50μm為佳；使用尼龍樹脂之情形，厚度在15μm~50μm為佳。藉由設定於上述合適的下限值以上，可確保作為成形用包裝材1充分的強度，且藉由設定於上述合適的上限值以下，可減少鼓脹成形時或引伸成形時之應力並可提升成形性。
於本發明中，需要在前述耐熱性樹脂層2之外側(前述耐熱性樹脂層2之前述金屬箔層4側的相反側)積層印刷改善樹脂層7。藉由此種印刷改善樹脂層7設置於前述耐熱性樹脂層2之外側，可得到在成形時、熱密封時、高溫多濕等稍微嚴苛的環境下之使用時等，可防止印刷處之墨水之模糊，亦可防止印刷部與溶劑等接觸而剝離之效果。又，於前述耐熱性樹脂層2之外面(積層印刷改善樹脂層7之面)積層印刷改善樹脂層7之前，事先進行電暈處理等，提高潤濕性為佳。
前述印刷改善樹脂層7，雖無特別限制，但以含有選自環氧樹脂、胺基甲酸樹脂、丙烯酸樹脂(不含丙烯酸酯樹脂)、甲基丙烯酸樹脂(不含甲基丙烯酸酯樹脂)、丙烯酸酯樹脂、甲基丙烯酸酯樹脂、聚酯樹脂及聚乙烯亞胺樹脂所成群中1種或2種以上之樹脂之層所形成為佳。於此情形，成形用包裝材1即使在高溫多濕等稍微嚴苛的環境下使用時，可充分防止印刷部之墨水之模糊，亦可充分防止印刷部與溶劑等接觸而剝離。
其中，前述印刷改善樹脂層7，係含有胺基甲酸樹脂及環氧樹脂之構成，或者，含有(甲基)丙烯酸酯樹脂及環氧樹酯之構成為特佳。於此情形，成形用包裝材1即使在高溫多濕等稍微嚴苛的環境下使用時，可進一步充分防止印刷部之墨水之模糊，亦可進一步充分防止印刷部與溶劑等接觸而剝離。
採用上述前者之構成之情形，印刷改善樹脂層7之胺基甲酸樹脂/環氧樹脂之含有質量比為98/2~40/60之範圍為佳，於此情形，成形用包裝材1即使在高溫多濕等稍微嚴苛的環境下使用時，可進一步充分防止印刷部之墨水之模糊，亦可進一步充分防止印刷部與溶劑等接觸而剝離。若胺基甲酸樹脂之含有比率較前述胺基甲酸樹脂/環氧樹脂之含有質量比(98/2)大，則交聯度不足，難以充分得到印刷改善樹脂層7之耐溶劑性，因而不佳。另一方面，若胺基甲酸樹脂之含有比率較前述胺基甲酸樹脂/環氧樹脂之含有質量比(40/60)小，則完成交聯所需的時間過長，因而不佳。其中，印刷改善樹脂層7之胺基甲酸樹脂/環氧樹脂之含有質量比為90/10~50/50之範圍為更佳。
此外，採用上述後者之構成之情形，印刷改善樹脂層7之(甲基)丙烯酸酯樹脂/環氧樹酯之含有質量比為98/2~40/60之範圍為佳，於此情形，成形用包裝材1即使在高溫多濕等稍微嚴苛的環境下使用時，可進一步充分防止印刷部之墨水之模糊，亦可進一步充分防止印刷部與溶劑等接觸而剝離。若(甲基)丙烯酸酯樹脂之含有比率較前述(甲基)丙烯酸酯樹脂/環氧樹酯之含有質量比(98/2)大，則交聯度不足，難以充分得到印刷改善樹脂層7之耐溶劑性，因而不佳。另一方面， 若(甲基)丙烯酸酯樹脂之含有比率較前述(甲基)丙烯酸酯樹脂/環氧樹酯之含有質量比(40/60)小，則完成交聯所需的時間過長，因而不佳。其中，印刷改善樹脂層7之(甲基)丙烯酸酯樹脂及環氧樹酯之含有質量比為90/10~50/50之範圍為更佳。
為了形成前述印刷改善樹脂層7之前述樹脂水性乳膠(樹脂-水系乳膠)中，可添加乙二醇類、乙二醇之環氧乙烷附加物等之界面活性劑，於此情形樹脂水性乳膠中可得到充分的消泡效果，因此可形成表面平滑性優良的印刷改善樹脂層7。前述界面活性劑，係於前述樹脂水性乳膠中含有0．01質量%~2．0質量%為佳。
此外，為了形成前述印刷改善樹脂層7之前述樹脂水性乳膠(樹脂-水系乳膠)中，含有二氧化矽、膠體二氧化矽等之無機微粒子為佳，於此情形可得到阻隔防止效果。前述無機微粒子，係相對於前述樹脂分100質量份添加0．1質量份~10質量份為佳。
前述印刷改善樹脂層7之形成量(乾燥後之固形分量)，係在0．01g/m2~0．5g/m2之範圍為佳。藉由在0．01g/m2以上，可提升印刷改善樹脂層7之耐溶劑性，而藉由在0．5g/m2以下，可降低成本而經濟。
此外，前述印刷改善樹脂層7之厚度(乾燥後之厚度)，係0．01μm~10μm為佳，其中0．1μm~5μm為更佳。
前述印刷改善樹脂層(乾燥後)7之前述樹脂之含有率，係88質量%~99．9質量%為佳。
前述印刷改善樹脂層7之形成方法，並無特別限定，例如， 於前述耐熱性樹脂層2之表面，藉由塗佈選自環氧樹脂、胺基甲酸樹脂、丙烯酸酯樹脂、甲基丙烯酸酯樹脂、聚酯樹脂及聚乙烯亞胺樹脂所成群中1種或2種以上之樹脂之水性乳膠(水系乳膠)並乾燥，可形成印刷改善樹脂層7。前述塗佈方法，並無特別限定，可列舉例如噴塗法、凹版輥塗佈法、反轉輥塗佈法、唇輥塗法等。
前述熱熔性樹脂層(內側層)3，係對於用在鋰離子蓄電池等腐蝕性強的電解液等具備優良的耐藥品性，且負責賦予成形用包裝材熱密封性之功能。
前述熱熔性樹脂層3，雖無特別限定，其為熱可塑性樹脂未延伸薄膜層為佳。前述熱可塑性樹脂未延伸薄膜層3，並無特別限定，但由選自聚乙烯、聚丙烯、烯烴系共聚物、此等之酸變性物及離聚物所成群中至少1種之熱可塑性樹脂所構成之未延伸薄膜而構成為佳。
前述熱熔性樹脂層3之厚度，設定於20μm~80μm為佳。藉由設定在20μm以上可充分防止針孔之發生，且藉由設定在80μm以下可降低樹脂使用量而達到成本降低。其中，前述熱熔性樹脂層3之厚度設定於30μm~50μm為特佳。又，前述熱熔性樹脂層3，可為單層，亦可為複層。
於前述熱熔性樹脂層3，通常會添加潤滑劑。藉由添加前述潤滑劑可提升成形時之成形性。前述熱熔性樹脂層3之潤滑劑之含有率，設定於200ppm~5000ppm之範圍為佳。
前述潤滑劑，並無特別限定，可列舉例如飽和脂肪酸醯胺、不飽和脂肪酸醯胺、取代的醯胺、羥甲基醯胺、飽和脂肪酸雙醯胺、不飽 和脂肪酸雙醯胺、脂肪酸酯醯胺、芳香族系雙醯胺等。
前述飽和脂肪酸醯胺，並無特別限定，可列舉例如月桂酸醯胺，棕櫚酸醯胺，硬脂酸醯胺，二十二酸醯胺，羥基硬脂酸醯胺等。前述不飽和脂肪酸醯胺，並無特別限定，可列舉例如油酸醯胺、芥酸醯胺。
前述取代的醯胺，並無特別限定，可列舉例如N-油基棕櫚酸醯胺、N-硬脂基硬脂酸醯胺、N-硬脂基油酸醯胺、N-油烯基硬脂酸醯胺、N-硬脂基芥酸醯胺等。此外，前述羥甲基醯胺，並無特別限定，可列舉例如羥甲基硬脂酸醯胺等。
前述飽和脂肪酸雙醯胺，並無特別限定，可列舉例如亞甲基雙硬脂醯胺、亞乙基雙癸酸醯胺、亞乙基雙月桂酸醯胺、亞乙基雙硬脂酸醯胺、亞乙基雙羥基硬脂酸醯胺、亞乙基雙二十二酸醯胺、六亞甲基雙硬脂酸醯胺、六亞甲基雙二十二酸醯胺、六亞甲基羥基硬脂酸醯胺、N，N’-二硬脂基己二酸醯胺、N，N’-二硬脂基癸二酸醯胺等。
前述不飽和脂肪酸雙醯胺，並無特別限定，可列舉例如亞乙基雙油酸醯胺、亞乙基雙芥酸醯胺、六亞甲基雙油酸醯胺、N，N’-二油基癸二酸醯胺等。
前述脂肪酸酯醯胺，並無特別限定，可列舉例如硬脂醯胺乙基硬脂酸酯等。前述芳香族系雙醯胺，並無特別限定，可列舉例如間苯二甲基雙硬脂酸醯胺、間苯二甲基雙羥基硬脂酸醯胺、N，N’-半胱胺醯基間苯二甲酸醯胺等。
前述金屬箔層4，係負責賦予成形用包裝材1阻止氧氣或水分之侵入之氣體屏蔽性之功能。前述金屬箔層4，並無特別限定，可列舉 例如鋁箔、銅箔等，一般常用為鋁箔。前述金屬箔層4之厚度，在20μm~100μm為佳。藉由在20μm以上，可防止製造金屬箔時之壓延時產生針孔，且藉由在100μm以下，可減少鼓脹成形時或引伸成形時之應力而可提升成形性。
前述金屬箔層4，於至少內側之面4a(第2接著層6側之面)，施予化成處理為佳。藉由施予此種化成處理，可充分防止內容物(電池之電解液、食品、醫藥品等)導致金屬箔表面之腐蝕。例如，藉由以下處理於金屬箔施予化成處理。亦即，例如，於已進行脫脂處理之金屬箔之表面，藉由塗工下述任一者後乾燥而施加化成處理，1)磷酸、鉻酸及氟化物之金屬鹽之混合物所構成之水溶液2)磷酸、鉻酸、氟化物金屬鹽及非金屬鹽之混合物所構成之水溶液3)丙烯酸系樹脂及/或酚系樹脂、磷酸、鉻酸、氟化物金屬鹽之混合物所構成之水溶液。
前述第1接著劑層5，並無特別限定，可列舉例如由2液反應型接著劑所形成之接著劑層等。前述2液反應型接著劑，可列舉例如以選自聚胺酯系多元醇、聚酯系多元醇及聚醚系多元醇所成群中之多元醇之1種或2種以上所構成之第1液，及異氰酸酯所構成之第2液(硬化劑)構成之2液反應型接著劑等。前述第1接著劑層5，例如，係前述2液反應型接著劑等之接著劑在前述「金屬箔層4之上面」及/或在「前述耐熱性樹脂層2之下面」，藉由凹版塗佈法等之手段塗佈而形成。
前述第2接著劑層6，並無特別限定，可列舉例如由聚胺酯系接著劑、丙烯酸系接著劑、環氧系接著劑、聚烯烴系接著劑、彈性體系 接著劑、氟系接著劑等所形成之接著劑層。其中，使用丙烯酸系接著劑、聚烯烴系接著劑為佳，於此情形，可提升成形用包裝材1之耐電解液性及水蒸氣屏蔽性。
又，上述實施型態，雖採用設置第1接著劑層5及第2接著劑層6之構成，而此等兩層5、6並非必要的構成層，亦可採用不設置此等之構成。
此外，上述實施型態，係金屬箔層4及耐熱性樹脂層2介由第1接著劑層5而積層一體化，但亦可採用於前述耐熱性樹脂層2之金屬箔層4側的面，積層作為上述印刷改善樹脂層7與各種示例相同構成(相同組成)之樹脂層8，於該樹脂層8介由第1接著劑層5而積層金屬箔層4之構成(參照圖2)。藉由採用此種構成，可更加提升金屬箔層4與耐熱性樹脂層(外側層)2之接著強度。
因此，藉由成形本發明之成形用包裝材1(深引伸成形、鼓脹成形等)，可得到如圖4所示之成形外殼(電池外殼等)1A。前述成形外殼之形狀，並無特別限定，可列舉例如圖4所示之1面(上面)為開放之略長方體形狀等。
如上述，前述成形用包裝材之熱熔性樹脂層3，通常會添加潤滑劑，而該潤滑劑，藉由隨時間經過其一部分滲出，存在於熱熔性樹脂層3之表面(附著於表面)。
將此種含有潤滑劑之熱熔性樹脂層3之成形用包裝材1，以前述熱熔性樹脂層3與前述印刷改善樹脂層7為接觸之態樣捲(回捲)成滾筒狀，以滾筒體保存或備用於下個步驟等為通常的做法。
因此，表面印刷所成的蓄電裝置30，例如可如下製造。亦即，從前述滾筒體拉出前述成形用包裝材，以該拉出的成形用包裝材外裝蓄電裝置本體部31而得到蓄電裝置，接著，於該蓄電裝置之外裝狀態之成形用包裝材1之印刷改善樹脂層7之外側之表面(外面)藉由墨水等進行印刷，從而製造表面印刷所成的蓄電裝置30(參照圖4)。由前述印刷，印刷例如，批號、QR碼(註冊商標)等。
存在於從前述滾筒體拉出之成形用包裝材之熱熔性樹脂層3之表面之潤滑劑之附著量，在0．05mg/m2~6mg/m2為佳，從前述滾筒體拉出之成形用包裝材之印刷改善樹脂層7之表面(外面)之潤滑劑附著量，在0．1mg/m2~5mg/m2為佳。
前述印刷改善樹脂層7之外側表面之潤滑劑，係重疊成前述滾筒狀時存在於前述熱熔性樹脂層3之表面之潤滑劑，移轉至前述印刷改善樹脂層7之外側表面者，並於附著前述潤滑劑之印刷改善樹脂層7之外側表面進行前述印刷。
如此得到之表面印刷所成的蓄電裝置30中，於外裝蓄電裝置本體部31之成形用包裝材1之印刷改善樹脂層7之外面(前述印刷改善樹脂層7之前述金屬箔層4側的相反側之面)積層印刷部(印刷墨水層等)11(參照圖3)。藉由於前述蓄電裝置30之成形用包裝材1之外面設置印刷部(印刷墨水層等)11，從而表示例如，批號、QR碼(註冊商標)等。
上述之表面印刷所成的蓄電裝置30之一實施型態表示於圖4。如圖4所示，成形本發明之成形用包裝材1得到成形外殼1A之收 容凹部內，收容略長方體形狀之蓄電裝置本體部31，於該蓄電裝置本體部31之上，本發明之成形用包裝材1使其內側層3為內部(下側)而配置，且該平面狀包裝材1之內側層3之周緣部，及前述成形外殼1A之凸緣部(密封用周緣部)29之內側層3藉由熱密封密封接合而封口，從而構成本發明之蓄電裝置30。
圖4中，39為前述包裝材1之周緣部，及前述成形外殼1A之凸緣部(密封用周緣部)29接合(熔接)之熱密封部。
前述蓄電裝置本體部31，並無特別限定，可列舉例如電池本體部、電容本體部、電容器本體部等。
【實施例】
接著，對於本發明之具體實施例做說明，但本發明並無特別限定於此等實施例。
<印刷改善樹脂層形成用樹脂組成物>
(樹脂組成物W)
水系胺基甲酸樹脂使用三井化學股份公司製「TAKELAC W-6010」70質量份、水系環氧樹脂使用長瀨化學科技股份公司製「代那考爾EX-521」30質量份、阻隔防止劑使用日產化學工業股份公司製之膠體二氧化矽「SNOWTEX ST-C」(平均粒徑10nm~20nm)5質量份並將其等混合，進一步加入離子交換水稀釋，得到不揮發分含有率為2質量%之樹脂組成物W。
(樹脂組成物V)
水系丙烯酸酯樹脂使用中央理化工業股份公司製「Rikabond SA-513」70質量份、水系環氧樹脂使用長瀨化學科技股份公司製「代那考爾EX-521」30質量份、阻隔防止劑使用日產化學工業股份公司製之膠體二氧化矽「SNOWTEX ST-C」(平均粒徑10nm~20nm)5質量份並將其等混合，進一步加入離子交換水稀釋，得到不揮發分含有率為2質量%之樹脂組成物V。
(樹脂組成物Z)
水系環氧樹脂使用長瀨化學科技股份公司製「代那考爾EX-521」100質量份、阻隔防止劑使用日產化學工業股份公司製之膠體二氧化矽「SNOWTEX ST-C」(平均粒徑10nm~20nm)5質量份並將其等混合，進一步加入離子交換水稀釋，得到不揮發分含有率為2質量%之樹脂組成物Z。
<實施例1>
以同時2軸延伸法得到，厚度15μm、熱水收縮率4．0%之二軸延伸尼龍(6尼龍)薄膜(MD/TD=0．95、耐熱性樹脂層)2之一側的面，藉由凹版輥塗佈法塗佈上述樹脂組成物W並乾燥後，在40℃環境下放置1日進行硬化反應，形成形成量0．1g/m2之印刷改善樹脂層7。
另一方面，於厚度35μm之鋁箔4之兩面，塗佈聚丙烯酸、三價鉻化合物、磷酸、水、乙醇所構成之化成處理液，在180℃進行乾燥，使鉻附著量為10mg/m2。
接著，於前述化成處理過之鋁箔4之一側的面，介由聚酯系聚胺酯接 著劑5貼合前述二軸延伸尼龍薄膜2之另一面(形成前述印刷改善樹脂層7側的相反側之面)，接著在鋁箔4的另一側的面，介由無水馬來酸改性聚丙烯接著劑6貼合厚度30μm之未延伸聚丙烯薄膜(熱熔性樹脂層)3後，在40℃環境下放置5日，從而得到如圖1所示之成形用包裝材1。
又，前述未延伸聚丙烯薄膜3，使用3μm之無規聚丙烯層(芥酸醯胺含有率1000ppm)/24μm之嵌段聚丙烯層(芥酸醯胺含有率3000ppm)/3μm之無規聚丙烯層(芥酸醯胺含有率1000ppm)之3層積層構成之薄膜。
接著，將得到的成形用包裝材1，以熱熔性樹脂層3與印刷改善樹脂層7接觸之態樣重疊成滾筒狀而得到滾筒體，以該狀態在40℃保存5天後，從滾筒體拉出成形用包裝材。從前述滾筒體拉出之成形用包裝材之印刷改善樹脂層7之表面(外面)之芥酸醯胺附著量為2．5mg/m2，熱熔性樹脂層3之表面之芥酸醯胺附著量為3．0mg/m2。
<實施例2>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率2．5%之二軸延伸6尼龍薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例3>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率3．5%之二軸延伸6尼龍薄膜(MD/TD=1．0) 以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例4>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率5．0%之二軸延伸6尼龍薄膜(MD/TD=1．1)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例5>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率10%之二軸延伸6尼龍薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例6>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率15%之二軸延伸6尼龍薄膜(MD/TD=1．05)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<比較例1>
除了不設置印刷改善樹脂層7以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材。
<實施例7>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以逐次2軸延伸法延伸得到，厚度15μ m、熱水收縮率3．0%之二軸延伸聚對苯二甲酸乙二酯(PET)薄膜(MD/TD=1．0)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例8>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以逐次2軸延伸法延伸得到，厚度15μm、熱水收縮率5．0%之二軸延伸聚對苯二甲酸乙二酯(PET)薄膜(MD/TD=1．0)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例9>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以逐次2軸延伸法延伸得到，厚度15μm、熱水收縮率15%之二軸延伸聚對苯二甲酸乙二酯(PET)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<比較例2>
除了不設置印刷改善樹脂層7以外，與實施例8相同，得到從滾筒體拉出之成形用包裝材。
<實施例10>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以逐次2軸延伸法延伸得到，厚度15μm、熱水收縮率3．0%之二軸延伸聚萘二甲酸乙二醇酯(PEN)薄膜 (MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例11>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以逐次2軸延伸法延伸得到，厚度15μm、熱水收縮率5．0%之二軸延伸聚萘二甲酸乙二醇酯(PEN)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例12>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以逐次2軸延伸法延伸得到，厚度15μm、熱水收縮率15%之二軸延伸聚萘二甲酸乙二醇酯(PEN)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<比較例3>
除了不設置印刷改善樹脂層7以外，與實施例11相同，得到從滾筒體拉出之成形用包裝材。
<實施例13>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率4．0%之二軸延伸聚對苯二甲酸丁二酯(PBT)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成 形用包裝材1(參照圖1)。
<實施例14>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率6．0%之二軸延伸聚對苯二甲酸丁二酯(PBT)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例15>
除了取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率15%之二軸延伸聚對苯二甲酸丁二酯(PBT)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<比較例4>
除了不設置印刷改善樹脂層7以外，與實施例14相同，得到從滾筒體拉出之成形用包裝材。
<實施例16>
除了取代接著劑組成物W，使用接著劑組成物V以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例17>
除了取代接著劑組成物W，使用接著劑組成物V，且取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)， 使用以逐次2軸延伸法延伸得到，厚度15μm、熱水收縮率10%之二軸延伸聚對苯二甲酸乙二酯(PET)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例18>
除了取代接著劑組成物W，使用接著劑組成物V，且取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以逐次2軸延伸法延伸得到，厚度15μm、熱水收縮率5．0%之二軸延伸聚萘二甲酸乙二醇酯(PEN)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例19>
除了取代接著劑組成物W，使用接著劑組成物V，且取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率6．0%之二軸延伸聚對苯二甲酸丁二酯(PBT)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例20>
除了取代接著劑組成物W，使用接著劑組成物Z，且取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率10%之二軸延伸6尼龍薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例21>
除了取代接著劑組成物W，使用接著劑組成物Z，且取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以逐次2軸延伸法延伸得到，厚度15μm、熱水收縮率5．0%之二軸延伸聚對苯二甲酸乙二酯(PET)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材1(參照圖1)。
<實施例22>
除了取代接著劑組成物W，使用接著劑組成物Z，且取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以逐次2軸延伸法延伸得到，厚度15μm、熱水收縮率4．0%之二軸延伸聚萘二甲酸乙二醇酯(PEN)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材(參照圖1)。
<實施例23>
除了取代接著劑組成物W，使用接著劑組成物Z，且取代厚度15μm、熱水收縮率4．0%之二軸延伸6尼龍薄膜(MD/TD=0．95)，使用以同時2軸延伸法延伸得到，厚度15μm、熱水收縮率6．0%之二軸延伸聚對苯二甲酸丁二酯(PBT)薄膜(MD/TD=0．9)以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材(參照圖1)。
<實施例24>
除了前述未延伸聚丙烯薄膜3，使用3μm之無規聚丙烯層(芥酸醯胺含有率500ppm)/24μm之嵌段聚丙烯層(芥酸醯胺含有率1500ppm)/3μm之無規聚丙烯層(芥酸醯胺含有率500ppm)之3層積層構成之薄膜以外，與實施例1相同，得到從滾筒體拉出之成形用 包裝材(參照圖1)。
從滾筒體拉出之成形用包裝材之印刷改善樹脂層7之表面(外面)之芥酸醯胺附著量為0．8mg/m2，熱熔性樹脂層3之表面之芥酸醯胺附著量為1．0mg/m2。
<實施例25>
除了前述未延伸聚丙烯薄膜3，使用3μm之無規聚丙烯層(芥酸醯胺含有率1500ppm)/24μm之嵌段聚丙烯層(芥酸醯胺含有率3000ppm)/3μm之無規聚丙烯層(芥酸醯胺含有率1500ppm)之3層積層構成之薄膜以外，與實施例1相同，得到從滾筒體拉出之成形用包裝材(參照圖1)。
從滾筒體拉出之成形用包裝材之印刷改善樹脂層7之表面(外面)之芥酸醯胺附著量為3．5mg/m2，熱熔性樹脂層3之表面之芥酸醯胺附著量為4．0mg/m2。
對如上述所得到的各成形用包裝材，基於下述評價法進行評價。其評價結果表示於表1~4。
<印刷墨水部之剝離有無之評價法>
各實施例、各比較例，分別製造30個成形用包裝材，並於成形用包裝材之印刷改善樹脂層之表面之一部分之區域，使用噴墨印表機以白墨水印刷文字及條碼。對此等表面印刷所成的成形用包裝材，在下述a)、b)之2狀態時，以肉眼觀察印刷墨水部之文字或條碼有無模糊、有無印刷墨水部之剝離，基於下述判定基準評價。
(判定基準)
「◎」...印刷墨水部為模糊者及/或剝離者，30個中0個
「○」...印刷墨水部為模糊者及/或剝離者，30個中、1個或2個
「△」...印刷墨水部為模糊者及/或剝離者，30個中、3個或4個
「×」...印刷墨水部為模糊者及/或剝離者，30個中、5個~30個。
a)剛完成深引伸成形之表面印刷成形用包裝材(將上述表面印刷成形用包裝材，使用沖床及模具等，以內側層之聚丙烯層3與沖床接觸之態樣，進行深引伸成形形成縱50mm×橫35mm×深6．0mm之長方體形狀，得到剛完成成形之成形外殼)
b)適用高溫高濕試驗後之表面印刷成形用包裝材(將上述表面印刷成形用包裝材，持續放入85℃×95%RH之高溫高濕試驗機中72小時後，取出在常溫經過5天後之表面印刷成形用包裝材)。
從表1~4可明顯得知，本發明之實施例1~25之成形用包裝材，進行深引伸成形時印刷墨水部並無模糊及剝離，且即使在高溫多濕等稍微嚴苛的環境下使用時印刷墨水部亦無模糊及剝離。
相對於此，比較例1~4之成形用包裝材，由於沒有設置印 刷改善樹脂層，因此在上述a)、b)之2狀態之中至少任一種狀態時，印刷墨水部模糊且剝離。
【產業利用性】
本發明之成形用包裝材，適合用於筆記型電腦用、行動電話用、車載用、固定式之鋰離子聚合物蓄電池等之電池外殼，除此以外，亦適合用於食品之包裝材、醫藥品之包裝材，但並無特別限定於此等用途。其中，特別適合作為電池外殼用。
本申請案，係伴隨著在2017年2月10日提出申請的日本專利申請案的特願2017-22816號的優先權主張，其揭示內容直接構成本申請案的一部分。
在此所使用的用語及說明，係用以說明本發明的實施形態所使用，但本發明並不限定於此。在本發明所請求的範圍內的各種變形亦應被理解為係可被接受的。

Claims (14)

  1. 一種成形用包裝材，其係包含作為外側層之耐熱性樹脂層、作為內側層之熱熔性樹脂層、及配置於此等兩層間之金屬箔層，其特徵係：於前述耐熱性樹脂層之更外側積層印刷改善樹脂層。
  2. 如申請專利範圍第1項所記載之成形用包裝材，其中，前述印刷改善樹脂層係含有選自環氧樹脂、胺基甲酸樹脂、丙烯酸樹脂、甲基丙烯酸樹脂、丙烯酸酯樹脂、甲基丙烯酸酯樹脂、聚酯樹脂及聚乙烯亞胺樹脂所成群中1種或2種以上之樹脂。
  3. 如申請專利範圍第1項所記載之成形用包裝材，其中，前述印刷改善樹脂層係含有胺基甲酸樹脂及環氧樹脂。
  4. 如申請專利範圍第3項所記載之成形用包裝材，其中，前述印刷改善樹脂層中，前述胺基甲酸樹脂/前述環氧樹脂之含有質量比為98/2~40/60之範圍。
  5. 如申請專利範圍第1項所記載之成形用包裝材，其中，前述印刷改善樹脂層係含有選自丙烯酸酯樹脂及甲基丙烯酸酯樹脂所成群中1種或2種以上之丙烯酸樹脂，及環氧樹脂。
  6. 如申請專利範圍第5項所記載之成形用包裝材，其中，前述印刷改善樹脂層中，前述丙烯酸樹脂/前述環氧樹脂之含有質量比為98/2~40/60之範圍。
  7. 如申請專利範圍第1或2項所記載之成形用包裝材，其中，前述印刷改善樹脂層，係樹脂-水系乳膠塗佈於前述耐熱性樹脂層而形成之接著層。
  8. 如申請專利範圍第1或2項所記載之成形用包裝材，其中，前述耐熱性樹脂層，係以2軸延伸聚醯胺薄膜、2軸延伸聚萘二甲酸乙二醇酯薄膜、2軸延伸聚對苯二甲酸乙二酯薄膜或2軸延伸聚對苯二甲酸丁二酯薄膜所形成。
  9. 如申請專利範圍第1或2項所記載之成形用包裝材，其中，前述印刷改善樹脂層之外側之表面附著潤滑劑。
  10. 如申請專利範圍第9項所記載之成形用包裝材，其中，前述熱熔性樹脂層含有潤滑劑，且前述印刷改善樹脂層之外側表面之潤滑劑，係存在於前述熱熔性樹脂層之表面之潤滑劑，移轉至前述印刷改善樹脂層之外側表面者。
  11. 一種成形外殼之製造方法，其特徵係將如申請專利範圍第1~10項中任1項所記載之成形用包裝材深引伸成形或鼓脹成形者。
  12. 一種電池外殼之製造方法，其特徵係將如申請專利範圍第1~10項中任1項所記載之成形用包裝材深引伸成形或鼓脹成形者。
  13. 一種表面印刷所成的蓄電裝置之製造方法，其特徵係包含：將前述熱熔性樹脂層含有潤滑劑之申請專利範圍第1~8項中任1項所記載之成形用包裝材，以前述熱熔性樹脂層與前述印刷改善樹脂層接觸之態樣重疊成滾筒狀而得到滾筒體之步驟；從前述滾筒體拉出前述成形用包裝材，以該拉出的成形用包裝材外裝蓄電裝置本體部而得到蓄電裝置之步驟；於前述蓄電裝置之外裝狀態之成形用包裝材之印刷改善樹脂層之外側之表面進行印刷之印刷步驟。
  14. 如申請專利範圍第13項所記載之表面印刷所成的蓄電裝置之製造方法，其中，從前述滾筒體拉出的成形用包裝材之印刷改善樹脂層之外側之表面附著潤滑劑，且前述印刷改善樹脂層之外側表面之潤滑劑，係重疊成前述滾筒狀時存在於前述熱熔性樹脂層之表面之潤滑劑，移轉至前述印刷改善樹脂層之外側表面者；前述印刷步驟中，在前述潤滑劑所附著之印刷改善樹脂層之外側表面進行前述印刷。
TW107102388A 2017-02-10 2018-01-23 成形用包裝材及表面印刷所成的蓄電裝置之製造方法 TWI731211B (zh)

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