201247964 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種皮革染色方法與染色皮革，特別 是指一種靛藍染料用於天然皮革的染色方法與染色皮革。 【先前技術】 一般的天然皮革染色方法多使用一合成染料，藉此， 可用簡單的大鼓設備進行染色作業後，再以固酸處理穩定 染色的效果，即可獲得一容易上色且不易退色的染色皮革 ，但該合成染料對環境影響大，因此，發展天然的染料進 行染色作業成為此技術領域的趨勢。 習知的靛藍（C〗6H10N2〇2，Indigo)是一種還原染料， 也是人類最早應用的天然染料之一，以其特徵性的靛藍色 而得名。由於，靛藍不溶於水、酸、鹼，因此要製成靛藍 染液吸附於織物時，必須先將靛藍還原成可溶於鹼性溶液 的彀白（Cl6Hl2N2〇2，leuc〇-indigo 或 white indigo)，藉由浸 泡的方式使靛白吸附於動物或植物纖維上，最後再於空氣 中使靛白氧化形成靛藍，進而使動物或植物纖維呈現藍色 口此，彀藍染液還包含一還原劑和一驗水，該還原劑一 般使用保險粉（sodium dithionite，連二亞硫酸鈉），該鹼水 為氫氧化鈉（NaOH)。 散藍為天然的植物性染料，主要用於染棉布、棉紗、 羊毛或絲綢’而皮革製品因為不易吸收染料，造成染色皮 革的上色效果不佳且容易退色，至今業界尚無法克服，因 此’對此技術領域的業者而言，發展靛藍染料的染色方法 201247964 ’仍存在一大需求。 【發明内容】 因此’本發明的目的，即在提供一種天然染色且不易 退色的靛藍染料用於天然皮革的染色方法與染色皮革。 於是，本發明靛藍染料用於天然皮革的染色方法，包 含下列步驟： (a) 取一天然皮革浸泡於一包括靛藍組份的染液，並按 壓該天然皮革，使該天然皮革吸收該染液； (b) 持續將該天然皮革浸泡於該染液中； (c) 取出該天然皮革進行—氧化處理，以獲得一包括該 靛藍組份的染色皮革；及 (d) 取乾燥的該染色皮革進行一固酸處理。 本發明的功效在於：藉由按壓該天然皮革，能使該染 液經由該天然皮革的毛細孔滲入並與該天然皮革結合，而 形成該染色皮革，以產生天然染色的效果，再藉由該固酸 處理能使該靛藍組份固定於該染色皮革’而產生不易退色 的效果。 進一步地，本發明提供一種染色皮革，該染色皮革包 括一天然皮革及-與該天然皮革結合的歆藍組份。 本發明的功效在於：利用該染色皮革包括該敕藍組份 ，而產生天然染色的效果。 【實施方式】 有關本發明的前述及其他技術内容、特點與功效，在 以下配合參考圖式的—個較佳實施例的詳細說明中將可 201247964 清楚的呈現。 本發明彀藍染料用於天然皮革的染色方法的較佳實施 例，包含下列步驟： ' 疋取天然皮革浸泡於一包括鼓藍組份的染 液，並按壓該天然皮革，使該天然皮革吸收該染液，藉此 按£該天然皮革’能使該染液經由該天，然皮革的毛細孔 滲入並與該天然皮革結合，較佳地，按壓重量介於150公 克重至600公克重之間，該天然皮革選自於猪皮、牛皮或 羊皮，該染液還包括-驗水與—還原劑，該m氣氧化 鈉，該還原劑是保險粉，藉此，將該鼓藍組份還原成一鼓 白組份而溶解於鹼性的該染液中。值得說明的是，也可使 用据或揉的方式，倍访f 便該天然皮革吸收該染液，但容易造成 该天然皮革產生折痕與染色不均句的情形。 步驟102是持續將該天然皮革浸泡於該染液中，藉此 ’能使該天然皮革持續吸收該染液中的靛白組份至飽和， 需要說明的是’過長的浸泡時間不會增加該天然皮革吸收 該染液的份量’而獲得較深的染色效果，另外，過少的該 染液量會造成該天然皮革局部吸收不完全，而產生染色不 均句的效果，反之’過多的該染液量僅會造成浪費，較佳 地，浸泡時間介於10分鐘至20分鐘之間。 步驟103是取出該天，然皮革進行—氧化處理，以獲得 -包括該靛藍組份的染色皮革’藉此，能使該天然皮革所 吸收的該染液中的該靛白組份氧化形成該靛藍組份，而使 該天然皮革形成該包括該靛藍組份且呈現藍色的染色皮革 201247964 需要說明的是’該氧化處理的時間決定該靛白組份氧化 形成該歆藍組份的程度，可視不同的染色效果調整該氧化 處理時間，過短的時間會造成該染色皮革所呈現的顏色過 淺，增加處理時間可使該染色皮革的顏色變深，較佳地， 該氧化處理時間介於3天至4天之1值得—提的是，該 氧化處理時’過熱的環境會造成該染色皮革中的該染液中 的水分蒸發過快，造成該靛白組份氧化的程度降低，較佳 地，該氧化處理的環境是陰乾。 選擇性地，本較佳實施例還包含在步驟1〇3之後的一 步驟104，該步驟104是去除附著於乾燥的該染色皮革上的 雜質，藉此，可避免乾燥的該靛藍組份刮傷該染色皮革表 面與傷害該染色皮革上的絨毛。 選擇性地，本較佳實施例還包含在步驟1〇4之後的一 步驟105，該步驟1〇5是靜置該染色皮革，藉此，可使該靛 藍組份穩定的與該天然皮革結合，避免該靛藍組份溶出， 且增加該染色皮革不易退色的效果，較佳地，靜置時間介 於3天到4天之間。 步驟106取乾燥的該染色皮革進行一固酸處理，藉此 ’使該靛藍組份固定於該天然皮革，使該染色皮革產生不 易退色的效果，較佳地，該固酸處理的時間介於1〇分鐘至 2〇分鐘之間’較佳地，該固酸處理使用一包括酸液的水溶 液進行，需要說明的是’該水溶液以適合人員操作的範圍 為佳，較佳地’該水溶液的pH值介於3.5至4之間，該酸 液為選自於蟻酸 '醋酸或乳酸。值得一提的是，該酸液也 201247964 可使用鹽酸、硫酸或強酸，但對操作人員的作業有較大的 安全顧慮，須特別注意。 進一步地，本發明染色皮革的較佳實施例，包括一天 然皮革及一與該天然皮革結合的靛藍組份。 以下分別透過下列具體例進一步說明本發明的染色方 法與該染色皮革的染色效果。 <製備例 >染液的配製 取20g的氫氧化鈉溶解於1〇〇〇g的清水，以獲得一鹼 水。取20g的保險粉（購自BASF)溶解於1〇〇〇g的溫水，以 獲得一保險液。取200g的靛藍（購自纖維藝術）倒入2〇〇〇g 的清水中攪拌均勻，並倒入該鹼水中攪拌均勻，最後再加 入該保險液攪拌5〜10分鐘，以形成一溶液，該溶液顏色呈 現藍綠色或黃綠色，且有藍色泡沫，持續放置丨小時後即 形成該染液。 <具體例> 取2000CC的該染液置於一平坦容器中，將一重量 l〇〇〇g厚度1.1〜1.3mm削裡豬皮的天然皮革浸泡於該染液， 以500公克重的重量按壓該天然皮革，並使整張該天然皮 革皆均勻地吸收到該染液’此時，該天然皮革呈現藍色， 且該染液顏色也由藍綠色轉變為藍色，顯示該染液經由該 天然皮革的毛細孔滲入並與該天然皮革結合，持續將該天 然皮革浸泡於該染液中15分鐘，使該天然皮革持續吸收該 染液至飽和。 將該染色皮革自該染液中取出陰乾並以自然風吹3天 201247964 ，以進行該氧化處理，以獲得一包括該靛藍組份的染色皮 革’ S亥染色皮革包括一天然皮革及一與該天然皮革結合的 靛藍組份，此時，該染色皮革會呈現深藍色。再將乾燥的 該染色皮革以大鼓進行3小時的鼓軟，以去除附著於乾燥 的該染色皮革表面上的雜質與乾燥的該靛藍組份，並靜置 該染色皮革3天。重覆上述按壓、浸泡、氧化、鼓軟，及 靜置步驟3次，以獲得較深的染色效果。 以蟻酸（購自BASF)配製pH值3.8的水溶液，將乾燥的 該染色皮革進行20分鐘的該固酸處理，並以丨〇分中的水 洗將該染色皮革洗淨，並乾燥。 結果： <曰光堅牢度測試> 皮革業界以太陽光日曬84小時後，比較曝曬前後的顏 色差異，以評估該染色皮革的曰光堅牢度，一般以5級為 最佳，1級為可接受》 裁取 < 具體例 >中該染色皮革大小為3.5公分X 1〇公分 的樣品，並沿長邊對折形成一 3 5公分X 4公分的日曬面與 一 3.5公分X 6公分的對照面，以太陽光曝曬該日曬面84 小時後，再用退色九級卡比較該日曬面與該對照面的顏色 差異，可發現退色差異為15級，顯示該染色皮革的曰光堅 牢度不錯。 <退色機測試> 裁取〈具體例> 中該染色皮革大小為7公分X 14.8公分 的樣品’並以市售退色機（SS_15G9,冑自欣翔科技）對該樣品 8 201247964 大小為2.5公分X 12公分的一區域進行標準棉布1〇次的磨 擦退色測試，以六色九級卡比較該區域與該樣品的其他未 經測試的區域的顏色差異為4.5級，顯示該染色皮革的磨擦 退色測試結果相當不錯。 由上述結果可說明本發明的製造方法確實能製出天然 染色且不易退色的該染色皮革，該染色皮革包括該天然皮 個及與該天然皮革結合的該靛藍組份。 歸納上述，本發明靛藍染料用於天然皮革的染色方法 與染色皮革，可獲致下述的功效及優點，故能達到本發明 的目的： 一'本發明藉由按壓該天然皮革，能使該染液經由該 天然皮革的毛細孔滲入並與該天然皮革結合而形成該染 色皮革，以產生天然染色的效果。 二、本發明利用該固酸處理能使該靛藍組份固定於該 染色皮革’而產生不易退色的效果。 ^三、本發明藉由靜置該染色皮革，可使該靛藍組份穩 疋的與該天然皮革結合，避免該靛藍組份溶出，而產生不 易退色的效果。 四、本發明利用該染色皮革包括與該天然皮革結合的 該靛藍組份’而產生天然染色的效果。 准以上所述者，僅為本發明的較佳實施例而已，當不 能以此限定本發明實施的範圍，即大凡依本發明申請專利 範圍及發明說明内容所作的簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋的範圍内。 201247964 【圖式簡單說明】 201247964 【主要元件符號說明】201247964 VI. Description of the Invention: [Technical Field] The present invention relates to a leather dyeing method and dyed leather, and more particularly to an indigo dye dyeing method and dyed leather for natural leather. [Prior Art] A general natural leather dyeing method uses a synthetic dye, whereby a simple drum machine can be used for the dyeing operation, and then the solid acid treatment is used to stabilize the dyeing effect, thereby obtaining an easy-to-color and non-fading color. Dyeing leather, but the synthetic dye has a great influence on the environment. Therefore, development of natural dyes for dyeing operations has become a trend in this technical field. The known indigo (C 6H10N2〇2, Indigo) is a vat dye and one of the earliest natural dyes used by humans. It is named after its characteristic indigo blue. Since indigo is insoluble in water, acid and alkali, it is necessary to reduce indigo to be soluble in alkaline solution (Cl6Hl2N2〇2, leuc〇-indigo or white indigo). ), by immersing the ruthenium on the animal or plant fiber, and finally oxidizing the ruthenium in the air to form indigo, thereby making the animal or plant fiber appear blue, and the indigo dye solution also contains a reducing agent And a water test, the reducing agent generally uses sodium dithionite (sodium dithionite), which is sodium hydroxide (NaOH). Blue is a natural vegetable dye, mainly used for dyeing cotton, cotton, wool or silk. While leather products are not easy to absorb dyes, the dyeing leather is not well colored and easily faded. So far, the industry has not been able to overcome it. For those skilled in the art, there is still a great need to develop a dyeing method for indigo dye 201247964. SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a method for dyeing natural leather and dyed leather by providing an indigo dye which is naturally dyed and which is not easily faded. Thus, the method for dyeing natural leather of the indigo dye of the present invention comprises the following steps: (a) immersing a natural leather in a dye solution comprising an indigo component, and pressing the natural leather to cause the natural leather to absorb the dye liquor (b) continuously soaking the natural leather in the dye liquor; (c) removing the natural leather for oxidation treatment to obtain a dyed leather comprising the indigo component; and (d) taking the dried dyed leather A solid acid treatment is carried out. The effect of the present invention is that by pressing the natural leather, the dyeing liquid can be infiltrated into the capillary of the natural leather and combined with the natural leather to form the dyed leather to produce a natural dyeing effect, and The solid acid treatment enables the indigo component to be fixed to the dyed leather' to produce an effect that is not easily faded. Further, the present invention provides a dyed leather comprising a natural leather and an indigo component in combination with the natural leather. The effect of the present invention is that the dyed leather is used to include the indigo component to produce a natural dyeing effect. [Embodiment] The foregoing and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings. A preferred embodiment of the indigo dye of the present invention for dyeing natural leather comprises the following steps: 'Drawing natural leather soaked in a dye solution comprising a drum blue component, and pressing the natural leather to absorb the natural leather The dyeing liquid, whereby the natural leather 'can make the dyeing liquid pass through the day, and the capillary pores of the leather penetrate and combine with the natural leather, preferably, the pressing weight is from 150 g to 600 g. The natural leather is selected from the group consisting of pig skin, cowhide or sheepskin, and the dyeing liquid further comprises a water test and a reducing agent, the m gas is sodium oxide, and the reducing agent is a safety powder, whereby the drum blue component is used. It is reduced to a white component and dissolved in the alkaline dye solution. It is worth noting that the natural leather can be absorbed by the natural leather according to the method of sputum or sputum, but it is easy to cause the natural leather to have creases and uneven dyeing. Step 102 is to continuously soak the natural leather in the dyeing liquid, thereby enabling the natural leather to continuously absorb the chalk component in the dyeing liquid to saturation, and it should be noted that the excessively long soaking time does not increase. The natural leather absorbs the amount of the dyeing liquid to obtain a deep dyeing effect. In addition, too little of the amount of the dyeing liquid causes partial absorption of the natural leather to be incomplete, and the effect of dyeing unevenness is produced, and vice versa. The amount of dye liquor is only a waste, and preferably the soaking time is between 10 minutes and 20 minutes. Step 103 is to take out the day, and then the leather is subjected to an oxidation treatment to obtain a dyed leather comprising the indigo component, whereby the chalk component in the dye liquor absorbed by the natural leather is oxidized to form the An indigo component, such that the natural leather forms the dyed leather including the indigo component and exhibits a blue color 201247964. It is to be noted that 'the time of the oxidation treatment determines the extent to which the chalk component is oxidized to form the indigo component, The oxidation treatment time can be adjusted according to different dyeing effects. In a short time, the color of the dyed leather is too shallow, and the treatment time can increase the color of the dyed leather. Preferably, the oxidation treatment time is between 1 day to 4 days worthwhile - mentioning that the 'overheated environment during the oxidation treatment will cause the water in the dyeing liquid to evaporate too quickly, resulting in a decrease in the degree of oxidation of the chalk component. Preferably, the oxidative treatment environment is dry. Optionally, the preferred embodiment further comprises a step 104 subsequent to step 1〇3, which removes impurities attached to the dried dyed leather, whereby the dried indigo component scraping can be avoided. Injures the surface of the dyed leather with damage to the fluff on the dyed leather. Optionally, the preferred embodiment further comprises a step 105 after the step 1〇4, wherein the step 1〇5 is to dispose the dyed leather, whereby the indigo component can be stably combined with the natural leather. The dissolution of the indigo component is avoided, and the effect of the dyed leather is not easily faded. Preferably, the standing time is between 3 days and 4 days. Step 106: taking the dried dyed leather for a solid acid treatment, thereby fixing the indigo component to the natural leather, so that the dyed leather has an effect of not easily discoloring. Preferably, the solid acid treatment time is between Between 1 minute and 2 minutes. Preferably, the solid acid treatment is carried out using an aqueous solution comprising an acid solution. It should be noted that the aqueous solution is preferably in a range suitable for personnel operation, preferably 'the aqueous solution. The pH is between 3.5 and 4, and the acid is selected from the group consisting of formic acid 'acetic acid or lactic acid. It is worth mentioning that the acid solution 201247964 can use hydrochloric acid, sulfuric acid or strong acid, but it has great safety concerns for the operation of the operator and must be paid special attention. Further, preferred embodiments of the dyed leather of the present invention include natural leather and an indigo component in combination with the natural leather. The dyeing method of the present invention and the dyeing effect of the dyed leather will be further described below by way of the following specific examples. <Preparation Example > Preparation of dyeing solution 20 g of sodium hydroxide was dissolved in 1 g of water to obtain an alkali water. 20 g of the powder (purchased from BASF) was dissolved in 1 g of warm water to obtain a safe liquid. Take 200g of indigo (purchased from fiber art) and pour into 2〇〇〇g of water to mix well, pour into the alkaline water and stir evenly, then add the liquid to stir for 5~10 minutes to form a solution. The color of the solution is blue-green or yellow-green, and there is a blue foam. The dye solution is formed after standing for a few hours. <Specific Example> The dye solution of 2000 CC was placed in a flat container, and a natural leather having a thickness of 1.1 to 1.3 mm of cut pig skin was soaked in the dye solution to a weight of 500 g. The natural leather is pressed by the weight, and the entire natural leather is uniformly absorbed into the dyeing liquid. At this time, the natural leather is blue, and the color of the dyeing liquid is also changed from blue-green to blue, indicating the dyeing liquid. The natural leather is continuously absorbed into the dyeing liquid to saturation by infiltrating into the capillary of the natural leather and combining with the natural leather, and continuously soaking the natural leather in the dyeing liquid for 15 minutes. The dyed leather is taken out from the dyeing liquid and dried in natural wind for 3 days 201247964 to carry out the oxidation treatment to obtain a dyed leather including the indigo component, which includes a natural leather and a natural leather. The leather-infused indigo component, at which point the dyed leather will appear dark blue. The dried dyed leather was further softened in a drum for 3 hours to remove impurities adhering to the dried surface of the dyed leather and the dried indigo component, and the dyed leather was allowed to stand for 3 days. Repeat the above pressing, soaking, oxidizing, softening, and standing steps 3 times to obtain a deeper dyeing effect. An aqueous solution of pH 3.8 was prepared with formic acid (available from BASF), and the dried dyed leather was subjected to the solid acid treatment for 20 minutes, and the dyed leather was washed with water in a portion and dried. Results: <Twilight Fastness Test> The leather industry compared the color difference before and after exposure for 84 hours after sun exposure to evaluate the light fastness of the dyed leather. Generally, the grade 5 is the best, and the grade 1 is Acceptable > Cut <Specific Example> The sample of the dyed leather is 3.5 cm x 1 cm, and is folded in half along the long side to form a sun face of 35 cm x 4 cm with a 3.5 cm x 6 cm On the control surface, after sun exposure for 84 hours in the sun, the difference in color between the sun-dried surface and the control surface was compared with a faded nine-level card, and the difference in fading was found to be 15 grades, indicating that the dyed leather was bright and strong. Good. <Fade coloring machine test> The sample of the dyed leather having a size of 7 cm X 14.8 cm was cut out in a specific example> and the size of the sample 8 201247964 was obtained by a commercially available color-reducing machine (SS_15G9, 胄 from Xinxiang Technology). A zone of 2.5 cm x 12 cm was subjected to a rubbing and fading test of a standard cotton cloth. The difference in color between the area and the other untested areas of the sample was 4.5 with a six-color nine-level card, indicating that the dyed leather was The results of the friction fade test are quite good. From the above results, it can be confirmed that the production method of the present invention can produce the dyed leather which is naturally dyed and which is not easily faded, and the dyed leather includes the natural hide and the indigo component combined with the natural leather. In summary, the indigo dye of the present invention can be used for the dyeing method of natural leather and dyed leather, and the following effects and advantages can be obtained, so that the object of the present invention can be attained: 1. The present invention can be dyed by pressing the natural leather. The liquid penetrates through the capillary pores of the natural leather and combines with the natural leather to form the dyed leather to produce a natural dyeing effect. 2. The present invention utilizes the solid acid treatment to fix the indigo component to the dyed leather' to produce an effect that is not easily faded. 3. The present invention allows the indigo component to be stably combined with the natural leather by standing the dyed leather, thereby preventing the indigo component from being eluted, resulting in an effect of not easily discoloring. 4. The present invention utilizes the dyed leather to include the indigo component in combination with the natural leather to produce a natural dyeing effect. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. 201247964 [Simplified illustration] 201247964 [Main component symbol description]