九、發明說明： 【發明所屬之技術領域】 本發明係—種製作水性塗料的方法，尤其是一種能將 油性確化纖料水性化，再與丙㈣系的水性樹脂混合形 成塗料，以使其具有抗回黏效果的方法。 【先前技術】 一般紙張或紙盒，如包裝禮盒、鞋盒等，由於其表面 皆會印刷有㈣、文字等，因此通常會在表面塗佈二層塗 料以保°蔓紙張或紙盒的表面，並且増加亮度以及質感。 該塗料係以上光程序、壓光程序或紫外光（ϋν)照射程 序來將塗料塗佈於紙張或紙盒的表面，其皆係先利用滾輪 將〃塗佈在紙張或紙盒表面，以形成一層塗膜，可再經過 熱管加熱（上光程序）、已加熱之鐵板輸送帶（壓光程序）， 或是以溫度較高且熱源穩定之UV燈管照射（υν照射程序）， 使塗膜固著於紙張或紙盒表面，乾燥後的塗膜能夠提高紙 張或紙盒的表面亮度。 一般的塗料係包括金油（可分為水溶性與油性）、透明 漆以及水溶性樹脂塗料。其中該水溶性塗料係以水作為溶 劑（稀釋劑），故不具有毒性’因此既環保，成本又低，而 且不可燃也不助燃，因此可安全地運送紙張或紙盒，目前 是廣被利用的塗料；然而，以紙盒為例，這種塗料所形成 的塗膜具有熱可塑性，所以在受壓、高溫或溼度高的環境 下會產生回黏（af tertack)，通常是發生在紙的運送途中 或儲存的時候，由於紙盒的相互堆疊會產生壓力，而且不 5 ^53374 易控制運送以及儲存環境的溫度與溼度，因此回黏的情形 時常發生。 所謂的「回黏」又避^ i私彳 稱再黏化現象’疋在塗膜乾燥後， 再發生黏化而呈現未乾燥狀態。而產生回黏的後果就是塗 膜會再黏附於周側的紙盒表面，一但乾燥，就會使複數個 紙盒黏著在一起，若施力將其分開，則紙盒的表面就會隨 者塗膜-起與紙盒分開，而造成紙盒的撕裂、毁損。 該水性塗料在三十年前就已經開始發展，但是目前使 用單-水性塗料仍會有回黏的問題，而無法解決。 另外一種塗料則是油性塗料，該油性塗料在任何環境 下都不會產生如上所述的回黏問題1而，目前所用的油 ，塗料係利用揮發性物f當溶劑（如甲苯），因此有相當的 毒性’對於進行塗料加卫之操作員的健康毫無保障:對 於接觸該具有油性塗膜之紙盒的人也可能會有傷害，所以 該油性塗料更不能使用在與食品有關的產品上。 【發明内容】 本發明人有鑑於目前的水性塗料會有回黏的問題，而 油性塗料又具有毒性，因此經過不斷的研究以及努力不懈 的試驗之後，終於發明出此製作抗回黏之水性塗料的方 法0 本發明之目的係在於提供一種能髂 ⑬月匕將油性硝化纖維素水 化，再與丙烯酸系的水性樹脂混合成 马塗枓，以使1且 有抗回黏效果的方法》 〃/、 為達上述目的，本發明製作抗回 令6之水性塗料的方 6 1353374 法，其係包括以下步驟： 將 30 wt%至 40 wt%的硝化纖維素（nitrocellul〇se) 溶解於60 至70 wt%的乙酸丁酯（n-butyl acetate)中， 以形成硝化纖維素溶液；將該硝化纖維素溶液與尿素甲醛 樹脂（urea-formaldehyde，UF)及水混合，以形成第一混 合溶液，並以65~9(TC的溫度將該第一混合溶液隔水加熱 2至3小時，使該第一混合溶液分為上、下層，下層為沉 澱的粉體’而上層則為液體； 之後’移除上層液，並於下層的粉體中加入體積至少 為粉體兩倍以上的乙二醇丁醚（ethylene glyc〇1 monobutyl ether)，以形成第二混合溶液； 再於該第二混合溶液中加入非離子型界面活性劑，以 形成第三混合溶液； 最後將3 wt%至15 wt%的第三混合溶液加入一水溶性 塗料中，即可得到抗回黏的水性塗料。 較佳的是，第一溶液中的硝化纖維素溶液、尿素曱醛 樹脂及水的混合體積比例為約1 : 1 : 2。 較佳的是’第一溶液中的水是利用無礦物質的蒸餾 水0 較佳的是’將第一混合溶液隔水加熱的溫度為8(rc。 車父佳的是’加入下層粉體中之乙二醇丁醚的體積為粉 體的2〜3倍。 較佳的是’加入第二混合溶液令的非離子型界面活性 劑為整體第三溶液的20 wt%。 7 1353374 較佳的是，該水溶性塗料為丙烯酸系的樹脂（即壓克 力）。 一般的硝化纖維素係作為油性塗料的基材，但使用本 發明之方法將其水性化後，添加至水溶性塗料中即可讓 所得到的水性塗料具有抗回黏的效果，塗佈於紙張或紙盒 之後，能夠讓其方便運送，而不會損壞，而且本發明之方 法中無需使用到苯環類的有毒揮發溶劑，因此無論是塗料 加工的操作貢或是使用者都無需擔心’而且能夠放心地使 用在食品包裝方面。 【實施方式】 請參看第一圖所示，本發明製作抗回黏之水性塗料的 方法’其係包括以下步驟： 硝化纖維素溶液製備步驟（1):將3〇 wt%至4〇 ^%的 硝化纖維素（nitrocellulose)在室溫中溶解於60 wt%至7〇 wt%的乙酸丁酯（n-butyl acetate)中以形成硝化纖維素容 液； ，、’ 第一混合溶液製備步驟（2):將該硝化纖維素溶液、 尿素曱酸樹脂（urea-formaldehyde，UF)及蒸館水以1 . 1 . 2的體積比例混合’以形成第一混合溶液，並以 的溫度將該第一混合溶液隔水加熱2至3小砗，品以， J ^ 而較佳的 加熱溫度為801：，使該第一混合溶液分為上、 「臂，下層 為沉澱的粉體，而上層則為液體； 第二混合溶液製備步驟（3):移除第一溶液中的上層 液，並將下層的粉體瀝乾，之後在粉體中加 八菔積至少為 8 1353374 ^ 粉體兩至三倍的乙二醇丁醚（ethylene glycol monobutyl ether) ’以形成第二混合溶液，以使得在硝化纖維素中導 入親水性的官能基； 第三混合溶液製備步驟（4):再於該第二混合溶液中 加入非離子型界面活性劑，以形成第三混合溶液，其中該 非離子型界面活性劑為整體第三溶液的20 wt%，其中該非 離子型界面活性劑係包括低泡界面活性劑，如氧乙稀_氧 丙烯共聚合物（EO/PO copolymer)等、增黏劑（cocoamide 籲 DEA)、珠光劑（EGDS)以其其他於本領域具有通常知識者所 能知悉的非離子型界面活性劑； 產物製備步驟（5):最後將3 wt%至1 5 wt%的第三混 合溶液加入一丙烯酸系的樹脂塗料中，即可得到抗回黏的 水性塗料。 實施例： 以下實施例係提供於本領域具有通常知識者，使其更 •旎了解本發明的製作方法，並非限制本發明之範疇。 將35 wt%的硝化纖維素溶解於65 wt%的乙酸丁酯中， 再將上述溶液與尿素甲醛樹脂及水混合，並以8(rc的溫度 將其隔水加熱2至3小時，使其分層，之後移除上層液， 並在沉澱於下層的粉體中加入體積至少為粉體3倍的乙二 醇丁醚，再於該上述混合溶液中加入2〇 wt%的非離子型界 面活性劑，最後10⑽具有非離子型界面活性劑的混合溶 液加入-丙烯酸樹脂中’即可得到抗回黏的水性塗料。 9 1353374 -般的軌纖維素係作為油性塗料的基材但油性塗 料必須使用有毒的揮發性㈣】，但本發明之方法是將其水 性化後’添加至水溶性塗料中’即可讓所得到的水性塗料 具有抗回黏的效果’無須使用揮發性溶劑，，目此無論是 塗科加工的插作員或是使用者都無需擔心，而能放心地使 ^在食品包裝方面。再者’由於雖然本發明之塗料為水.容 性，但其可達成與油性塗料相同的 〜/IX. Description of the Invention: [Technical Field] The present invention relates to a method for producing a water-based paint, in particular, a method for water-reducing an oil-based gelatinized fiber, and then mixing with a water-based resin of a C-type system to form a paint A method with an anti-sticking effect. [Prior Art] General paper or paper boxes, such as packaging gift boxes, shoe boxes, etc., because the surface will be printed with (4), text, etc., usually two layers of paint are applied on the surface to protect the surface of the paper or paper box. And add brightness and texture. The coating is applied to the surface of a paper or a carton by a light program, a calendering procedure or an ultraviolet (ϋν) irradiation procedure, which is first applied to a paper or carton surface by a roller to form a coating. A coating film can be heated by a heat pipe (glazing procedure), a heated iron plate conveyor (calendering procedure), or by a UV lamp with a high temperature and a stable heat source (υν irradiation procedure) The film is fixed to the surface of the paper or carton, and the dried film can increase the surface brightness of the paper or carton. Typical coatings include gold oil (which can be classified as water soluble and oily), clear lacquer, and water soluble resin coatings. Among them, the water-soluble paint uses water as a solvent (diluent), so it is not toxic. Therefore, it is environmentally friendly, low in cost, and non-flammable and non-combustible. Therefore, it can safely transport paper or paper boxes, and is widely used. Coatings; however, in the case of cartons, the coating formed by this coating is thermoplastic, so it will produce af tertack under pressure, high temperature or high humidity, usually in paper. When transporting or storing, the backing of the cartons creates pressure, and the temperature and humidity of the transport and storage environment are not easily controlled, so sticking often occurs. The so-called "back tack" avoids the phenomenon of re-adhesion. After the film is dried, it sticks to the undried state. The result of the stickiness is that the film will stick to the surface of the carton on the side of the circumference. Once dried, it will stick a plurality of cartons together. If force is applied to separate them, the surface of the carton will follow. The film is separated from the carton, causing tearing and damage of the carton. The waterborne coatings began to develop 30 years ago, but the use of single-waterborne coatings still has the problem of stickiness and cannot be solved. Another type of coating is an oily coating that does not cause the tackiness problem described above under any circumstances. However, the oils used today use volatiles f as a solvent (such as toluene), so "Significant toxicity" is not guaranteed for the health of the operator who is applying the paint: it may also be harmful to those who come into contact with the oily coated carton, so the oily paint cannot be used on food-related products. . SUMMARY OF THE INVENTION The present inventors have in view of the problem that the current water-based paints have a stickiness, and the oil-based paints are toxic. Therefore, after continuous research and unremitting trials, the inventors have finally invented the anti-sticking water-based paints. Method 0 The object of the present invention is to provide a method for hydrating oily nitrocellulose in 髂13, and then mixing it with an acrylic water-based resin to form a smear, so as to have an anti-sticking effect. In order to achieve the above object, the present invention provides a method for producing an aqueous coating of Resilience 6 according to the method of 6 1353374, which comprises the steps of: dissolving 30 wt% to 40 wt% of nitrocellulose 〇se to 60 至70 wt% of n-butyl acetate to form a nitrocellulose solution; mixing the nitrocellulose solution with urea-formaldehyde (UF) and water to form a first mixed solution, And heating the first mixed solution by water for 2 to 3 hours at a temperature of TC (the temperature of the TC is divided into upper and lower layers, the lower layer is a precipitated powder) and the upper layer is a liquid; 'Removing the supernatant liquid, and adding ethylene glycol 〇1 monobutyl ether in a volume of at least twice the powder to the lower layer powder to form a second mixed solution; and then mixing the second mixture A non-ionic surfactant is added to the solution to form a third mixed solution; finally, a third mixed solution of 3 wt% to 15 wt% is added to a water-soluble paint to obtain an anti-adhesive water-based paint. The mixing volume ratio of the nitrocellulose solution, the urea furfural resin and the water in the first solution is about 1: 1: 2. It is preferred that the water in the first solution is distilled water using no minerals. Preferably, the temperature at which the first mixed solution is heated by water is 8 (rc. It is preferred that the carrier is that the volume of the ethylene glycol butyl ether added to the lower layer powder is 2 to 3 times that of the powder. The nonionic surfactant added to the second mixed solution is 20 wt% of the whole third solution. 7 1353374 Preferably, the water soluble coating is an acrylic resin (i.e., acrylic). Nitrocellulose is used as a substrate for oily coatings, but After being aqueousized by the method of the present invention and added to the water-soluble paint, the obtained water-based paint can have an anti-sticking effect, and after being coated on paper or a paper box, it can be conveniently transported without It is damaged, and the method of the present invention does not need to use a toxic volatile solvent of a benzene ring type, so there is no need to worry about the operation of the coating processing or the user's and can be used safely in food packaging. Referring to the first figure, the method for producing an anti-sticking water-based paint of the present invention comprises the following steps: Step of preparing a nitrocellulose solution (1): 3 〇 wt% to 4 〇% of nitrocellulose ( Nitrocellulose) is dissolved in 60 wt% to 7 wt% of n-butyl acetate at room temperature to form a nitrocellulose suspension; , 'first mixed solution preparation step (2): The nitrocellulose solution, urea-formaldehyde (UF) and steaming water are mixed in a volume ratio of 1.2 to form a first mixed solution, and the first mixed solution is separated by water at a temperature Heating 2 3 small 砗, product, J ^ and the preferred heating temperature is 801:, the first mixed solution is divided into upper, "arm, the lower layer is the precipitated powder, while the upper layer is the liquid; the second mixed solution preparation Step (3): removing the supernatant liquid in the first solution, and draining the powder of the lower layer, and then adding octagonal product to the powder at least 8 1353374 ^ two to three times of ethylene glycol butyl ether (ethylene glycol monobutyl ether) 'to form a second mixed solution to introduce a hydrophilic functional group into the nitrocellulose; a third mixed solution preparation step (4): adding a nonionic type to the second mixed solution a surfactant to form a third mixed solution, wherein the nonionic surfactant is 20 wt% of the whole third solution, wherein the nonionic surfactant comprises a low foaming surfactant such as oxyethylene propylene oxide Copolymer (EO/PO copolymer), etc., tackifier (cocoamide DEA), pearlescent agent (EGDS), other nonionic surfactants known to those of ordinary skill in the art; product preparation steps ( 5): Finally, 3 wt% 1 5 wt% of the third mixed solution was added an acrylic resin coating, the adhesion can be obtained an anti-back aqueous coating. EXAMPLES The following examples are provided to those of ordinary skill in the art, and are not to be construed as limiting the scope of the invention. Dissolve 35 wt% of nitrocellulose in 65 wt% butyl acetate, mix the above solution with urea formaldehyde resin and water, and heat it at 8 (rc temperature for 2 to 3 hours). After stratification, the upper layer liquid is removed, and ethylene glycol butyl ether having a volume of at least 3 times that of the powder is added to the powder deposited in the lower layer, and 2 〇 wt% of the nonionic interface is added to the mixed solution. The active agent, the last 10 (10) mixed solution with non-ionic surfactant added to - acrylic resin can be obtained to obtain anti-adhesive water-based paint. 9 1353374 - Orbital cellulose is used as a substrate for oily coatings but oily coatings must be Use toxic volatility (4), but the method of the present invention is to add 'water to the water-soluble paint' after watering, so that the obtained water-based paint has anti-sticking effect' without using volatile solvent, This is no matter whether it is the inserter or the user who is in the process of coating, and there is no need to worry, but can safely make the food packaging. In addition, although the coating of the present invention is water-capacitive, it can be achieved with oil. The same paint /
於紙張或紙盒之後，能夠鮮枝黏絲，所以塗佈 【圖式簡單說明】 運送，而不會損壞。 第一圖係本發明之製作流程方塊圖 【主要元件符號說明】 (1)硝化纖維素溶液製備步驟 (2 )第一混合溶液製備步驟 (3 )第二混合溶液製備步驟 (4 )第三混合溶液製備步驟 (5 )產物製備步驟 10After the paper or paper box, it can be freshly affixed, so the coating [simplified description] is shipped without damage. The first drawing is a block diagram of the production flow of the present invention. [Main component symbol description] (1) Preparation step of nitrocellulose solution (2) First mixed solution preparation step (3) Second mixed solution preparation step (4) Third mixing Solution preparation step (5) product preparation step 10