TW201938714A

TW201938714A - Paper container base material and coating solution component thereof, preparing method of coating solution replacing conventional plastic backing layer to increase effects of being anti-bacterial and food safety

Info

Publication number: TW201938714A
Application number: TW107109225A
Authority: TW
Inventors: 蔡孜宏; 吳振文
Original assignee: 蔡孜宏
Priority date: 2018-03-19
Filing date: 2018-03-19
Publication date: 2019-10-01
Also published as: TWI648357B

Abstract

The present invention relates to a paper container base material, a coating solution component thereof, and a preparing method of the coating solution, which mainly uses its coating solution to replace conventional plastic backing layer, which is to mix components such as polyurethane copolymer, acrylate copolymer, carboxylic styrene butadiene latex, sodium tripolyphosphate, propane-1,2-diol, ammonium zirconium carbonate, and deionized water at a specific ratio with a small amount of added oxides selected from any one of oxides or a mixture of two or more oxides of the followings: nano zine oxide, nano zirconium oxide, nano silicon oxide, and nano manganese oxide, and then heat and evenly blend, apply the coating technique to evenly spray and coat the water coating solution onto a single surface or two surfaces of the paper container base material, thereby increasing effects of being anti-bacterial and food safety.

Description

紙製容器基材及其塗層液成份、塗層液製備方法Paper container substrate, coating liquid composition and coating liquid preparation method thereof

本發明涉及一種紙製容器基層表面的塗層技術與配方，藉由在紙製容器的基材塗佈一表層水性塗料，據以增進食品容器的安全性。The invention relates to a coating technology and formula for the surface of a base layer of a paper container. By coating a substrate of the paper container with a surface water-based coating, the safety of a food container is improved.

按，在現今社會進步繁榮的時代，但人們的生活相當忙碌，工作在外，就近方便，經常外食的次數頻率很高；而紙製容器可運用於食品容器如紙餐盒、紙碗、紙杯、紙盤、紙托盤、紙吸管、食品外帶盒…等。According to the current era of social progress and prosperity, but people's lives are quite busy, working outside, convenient nearby, frequent frequent meals frequently; and paper containers can be used for food containers such as paper lunch boxes, paper bowls, paper cups, Paper trays, paper trays, paper straws, food take-out boxes ... etc.

常見的紙製容器基材，為了增進其防水及防水目的，通常會以食品級原紙再加上塑膠材質淋膜後加以成型，而淋膜之塑膠材料多以低密度聚乙烯(Low Density Polyethylene，LDPE)材質為主，因為LDPE材質特性具有柔軟、呈半透明、耐酸、耐酒精、耐鹼等之優點。Common paper container substrates are usually molded with food-grade base paper and a plastic film after being coated in order to improve their waterproofing and waterproofing performance. The plastic materials used for the coating are mostly low density polyethylene (Low Density Polyethylene, LDPE) is the main material, because LDPE material has the advantages of softness, translucency, acid resistance, alcohol resistance, alkali resistance, etc.

然而，該塑膠製的淋膜材料LDPE材質，其耐熱僅至70～90℃，若裝盛過熱食物或飲料，則容易產生致癌物質及塑化劑，而危害身體健康與不良影響；且在回收方面要多人工分類與一般紙類區別回收，如要回收再製需要做紙膜分離，會比一般紙張回收再製還耗能源。However, the plastic LDPE material is heat-resistant to only 70-90 ° C. If it is filled with overheated food or drinks, it is prone to produce carcinogens and plasticizers, which endangers health and adverse effects; and is being recycled. In terms of manual classification, it is necessary to distinguish between recycling and general paper. If recycling is required to separate paper membranes, it will consume more energy than general paper recycling.

鑑於前述習知紙製容器基材的問題點，於是本發明人窮盡心思開發出一種紙製容器基材及其塗層液成份、塗層液製備方法，其最主要目的在於：提供飲食安全、無毒的紙製容器基材；本發明的次要目的在於：提供容易大面積塗佈於食品容器基材表面的塗層液成份、塗層液製備方法。In view of the foregoing problems of the conventional paper container substrate, the present inventors have devoted themselves to developing a paper container substrate, a coating liquid component and a method for preparing the coating liquid, the main purpose of which is to provide food safety, Non-toxic paper container substrate; a secondary object of the present invention is to provide a coating liquid component and a method for preparing a coating liquid that can be easily coated on a surface of a food container substrate in a large area.

為達上述目的，本發明所運用的技術手段如下述：In order to achieve the above object, the technical means used in the present invention are as follows:

本發明涉及一種紙製容器基材之塗層液成份，係包含下述組成物：重量百分比大約8%～30%的聚胺酯共聚物、重量百分比大約8%～30%丙烯酸酯共聚物、重量百分比大約8%～9%羧基丁苯膠乳、重量百分比大約0.4%～0.6%的三聚磷酸鈉、重量百分比大約2%～3%的1,2-丙二醇、重量比大約3%～5%碳酸鋯銨、重量比大約1%～7%奈米氧化物及重量比25%～60%的去離子水之成分；藉由上述組成物充分攪拌均勻以構成100%的乳白色液狀塗層液；The invention relates to a coating liquid component of a paper container substrate, which comprises the following composition: a polyurethane copolymer having a weight percentage of about 8% to 30%, a weight percent of about 8% to 30% acrylate copolymer, and a weight percentage. About 8% -9% carboxy styrene-butadiene latex, about 0.4% -0.6% sodium tripolyphosphate by weight, about 2% -3% by weight of 1,2-propylene glycol, and about 3% -5% zirconium carbonate by weight Ammonium, a weight ratio of about 1% to 7% of nanometer oxide and a weight ratio of 25% to 60% of deionized water; the above composition is fully stirred to form a 100% milky white liquid coating liquid;

上述該奈米氧化物可設為奈米氧化鋅、奈米氧化鋯、奈米氧化矽、奈米氧化錳等氧化物的任一成份或其兩種以上混合；及The above nano oxide may be any one of oxides such as nano zinc oxide, nano zirconia, nano silicon oxide, and nano manganese oxide, or a mixture of two or more thereof; and

上述該塗層的黏度設為(Ford cup#4/25℃)：25～50sec.。The viscosity of the coating is (Ford cup # 4/25 ° C): 25-50 sec.

本發明涉及一種紙製容器基材塗層液之製備方法，係包含如下步驟：一第一攪拌步驟，係於一內鍋放於具有水的外鍋，再將該去離子水、三聚磷酸鈉置入於該內鍋一起攪拌；一第二攪拌步驟，續於該內鍋緩慢加入該聚胺酯共聚物、丙烯酸酯共聚物後，以隔水加熱方式將該內鍋升溫並保持至92℃～94℃之間，並攪拌均勻後關閉熱源，以進行冷卻；一第三攪拌步驟，當該內鍋降至45℃～50℃之間，則再加入該羧基丁苯膠乳並攪拌均勻後，再加入該1,2-丙二醇並攪拌均勻；及一第四攪拌步驟，當該內鍋降至25℃～30℃之間，再加入該碳酸鋯銨、奈米氧化物並攪拌均勻後完成乳白色液狀塗層液；及The invention relates to a method for preparing a coating liquid for a substrate of a paper container, which comprises the following steps: a first stirring step, which is placed in an inner pot in an outer pot with water, and then the deionized water and tripolyphosphoric acid Sodium is placed in the inner pot and stirred together; a second stirring step is continued in the inner pot, and the polyurethane copolymer and the acrylate copolymer are slowly added, and then the inner pot is heated and maintained at 92 ° C. in a water-blocking manner 94 ° C, and stir the heat source to turn off after stirring evenly; for a third stirring step, when the inner pot is lowered to between 45 ° C and 50 ° C, add the carboxyl styrene-butadiene latex and stir well, then Add the 1,2-propanediol and stir well; and a fourth stirring step, when the inner pot is lowered to between 25 ° C and 30 ° C, add the ammonium zirconium carbonate and nanometer oxide and stir well to complete the milky white liquid Coating liquid; and

上述該外鍋得加裝有熱交換器，可加速該外鍋內的熱水加速降溫，提升製劑效率。The outer pot needs to be equipped with a heat exchanger, which can accelerate the accelerated cooling of the hot water in the outer pot and improve the preparation efficiency.

本發明涉及一種紙製容器基材之製法，係使用上述紙製容器之塗層液，係包含有：一基材步驟，係將該基材可安置於塗佈機，其中該基材設為食品級紙材；一塗佈步驟，係使用該液狀塗層液並於該基材的單一表面或雙表面塗佈一塗層；及一乾燥步驟，係將塗佈有該塗層的基材進入具有80℃～120℃的乾燥箱內後，以固化該塗層；The invention relates to a method for manufacturing a substrate for a paper container, which uses the coating solution for the paper container, and includes the following steps: a substrate step for placing the substrate in a coating machine, wherein the substrate is set as Food-grade paper; a coating step using the liquid coating solution and applying a coating on one or both surfaces of the substrate; and a drying step applying a base coated with the coating After the material enters a drying box with a temperature of 80 ° C to 120 ° C, the coating is cured;

上述該塗佈表層的厚度係設為0.003mm～0.3mm之間。The thickness of the coating surface layer is set to be between 0.003 mm and 0.3 mm.

本發明藉由上述技術手段，可達成如下功效： 1.本發明的塗層具無毒，防水防油、耐高溫及抗菌性相當佳，相當適於施作於紙製容器的內表面或／及外表面，可裝盛高熱食物或跟食物一起微波，均不會溶出有毒物質，可增進紙製容器基材的安全。 2.本發明因其塗層液的膠狀黏滯特性且容易被塗佈機大面積塗佈的優點，相當適合塗佈機於將該塗層液塗佈於紙製容器的基材單一表面或雙表面，讓該基材外面層產生優良的防水、防油、抗菌之效果。Through the above technical means, the present invention can achieve the following effects: 1. The coating of the present invention is non-toxic, water and oil resistant, high temperature resistance and antibacterial, and is quite suitable for being applied to the inner surface of a paper container or / and The outer surface can be filled with high-heat food or microwaved with the food, and will not dissolve toxic substances, which can improve the safety of paper container substrates. 2. The present invention is quite suitable for a coating machine to apply the coating solution to a single surface of a substrate of a paper container because of its gel-like viscous properties of the coating solution and the advantages of being easily coated by a coating machine over a large area. Or double surface, so that the outer layer of the substrate has excellent waterproof, oil and antibacterial effects.

首先，本發明涉及一種紙製容器基材之塗層液成份，係實施於圖4所示各種紙製容器表面之塗佈，係包含下述組成物：重量百分比大約8%～30%的聚胺酯共聚物(Polyurethane)、重量百分比大約8%～30%丙烯酸酯共聚物(Acrylic)、重量百分比大約8%～9%羧基丁苯膠乳(carboxylic butadiene-styrene latex)、重量百分比大約0.4%～0.6%的三聚磷酸鈉(化學式Na5P3O10)、重量百分比大約2%～3%的1,2-丙二醇(化學式為C3H8O2)、重量比大約3%～5%碳酸鋯銨[ 分子式為ZrO(CO3)2(NH4)2·nH2O]、重量比大約1%～7%奈米氧化物及重量比25%～60%的去離子水(DI water)之成分；藉由上述物質充分攪拌均勻，以構成100%的塗層液A組成物，又該塗層液A的黏度(Viscosity)設為(Ford cup#4/25℃)：25～50sec.，可讓塗佈機滾輪沾黏，以利大面積塗佈於基材的單一表面或雙表面。First, the present invention relates to a coating liquid component of a paper container substrate, which is applied on the surface of various paper containers shown in FIG. 4 and contains the following composition: about 8% to 30% by weight of polyurethane Copolymer (Polyurethane), about 8% to 30% by weight of acrylic copolymer (Acrylic), about 8% to 9% by weight of carboxylic butadiene-styrene latex (carboxylic butadiene-styrene latex), about 0.4% to 0.6% by weight Sodium tripolyphosphate (chemical formula Na5P3O10), about 2% to 3% by weight of 1,2-propanediol (chemical formula is C3H8O2), weight ratio of about 3% to 5% ammonium zirconium carbonate [molecular formula is ZrO (CO3) 2 ( NH4) 2 · nH2O], a weight ratio of about 1% to 7% of nanometer oxide and a weight ratio of 25% to 60% of deionized water (DI water); the above substances are fully stirred to form 100% The composition of the coating liquid A, and the viscosity (Viscosity) of the coating liquid A is set to (Ford cup # 4/25 ° C): 25 ～ 50sec., Which can make the roller of the coating machine stick, so as to facilitate large area coating Distribute on single or double surface of substrate.

進一步，前述奈米氧化物可為奈米氧化鋅、奈米氧化鋯、奈米氧化矽、奈米氧化錳等氧化物任一成份或其兩種以上混合。Further, the aforementioned nano oxide may be any one of oxides such as zinc zinc oxide, nano zirconia, nano silicon oxide, and nano manganese oxide, or a mixture of two or more kinds thereof.

而上述塗層液A的組成物，整體呈現水溶性的乳白色液，且略具膠狀液體，無毒，相當適合作為塗佈於紙製容器基材的單一表面或雙表面，以增進該基材防水、防油、耐高溫、抗菌等之效果。經烘乾後，則該基材表面所塗佈的塗層液A會形成一透明層，以達到長時間無毒，防水防油、耐高溫、抗菌的效果。特別一提，該塗層液A不以塗佈機塗佈方式為限，在無相關機器可用的情況下，亦可以人工方式塗刷為之。The composition of the coating liquid A described above is a water-soluble milky white liquid, and is a slightly gelatinous liquid. It is non-toxic and is suitable for coating a single surface or a double surface of a paper container substrate to enhance the substrate. Waterproof, oilproof, high temperature resistant, antibacterial, etc. After drying, the coating liquid A applied on the surface of the substrate will form a transparent layer, so as to achieve long-term non-toxic, waterproof, oil-proof, high temperature resistance, and antibacterial effects. In particular, the coating liquid A is not limited to the coating method of the coater. In the case that no related machine is available, it can also be manually applied.

請參閱圖1所示者，本發明製備前述紙製容器基材的塗層液之方法，係包含如下步驟：一第一攪拌步驟a、一第二攪拌步驟b、一第三攪拌步驟c及一第四攪拌步驟d；其中，Please refer to FIG. 1. The method for preparing the coating liquid of the paper container substrate according to the present invention includes the following steps: a first stirring step a, a second stirring step b, a third stirring step c, and A fourth stirring step d;

該第一攪拌步驟a，係於不銹鋼所製容量約80～100公升的一內鍋放於具有20公升水的外鍋，再將該25%～60%的去離子水、0.4%～0.6%的三聚磷酸鈉置入於該內鍋內，且啟動攪拌器一起攪拌，攪拌的速度約為70～80rpm，其中先用部分去離子水(約250毫升)溶解所有的三聚磷酸鈉後，加入內鍋內攪拌1分鐘；The first stirring step a is based on an inner pot made of stainless steel having a capacity of about 80 to 100 liters and placed in an outer pot with 20 liters of water, and then the 25% to 60% deionized water, 0.4% to 0.6% The sodium tripolyphosphate was placed in the inner pot, and the stirrer was started to stir together. The stirring speed was about 70 to 80 rpm. After dissolving all the sodium tripolyphosphate with part of deionized water (about 250 ml), Add to inner pot and stir for 1 minute;

該第二攪拌步驟b，續於該內鍋緩慢加入8%～30%聚胺酯共聚物、8%～30%丙烯酸酯共聚物後，攪拌10分鐘，再以隔水加熱方式將該內鍋升溫並保持至92℃～94℃之間，待攪拌均勻後關閉熱源，以進行冷卻；In the second stirring step b, continue to slowly add 8% to 30% polyurethane copolymer and 8% to 30% acrylate copolymer to the inner pot, stir for 10 minutes, and then heat the inner pot in a water-proof manner and Keep it between 92 ° C and 94 ° C, and turn off the heat source for cooling after stirring well;

該第三攪拌步驟c，於冷卻當中，將水域改成冷水域，即利用熱交換器使該內鍋快速降至45℃～50℃之間，然後再加入8%～9%的羧基丁苯膠乳並攪拌5分鐘後，再加入2%～3%的1,2-丙二醇並續攪拌0.5小時；及In the third stirring step c, during the cooling, the water area is changed to a cold water area, that is, the inner pot is rapidly reduced to a temperature between 45 ° C. and 50 ° C. by using a heat exchanger, and then 8% to 9% of carboxylic styrene butadiene is added. After the latex was stirred for 5 minutes, 2% to 3% of 1,2-propanediol was added and the stirring was continued for 0.5 hours; and

該第四攪拌步驟d，當該內鍋降至25℃～30℃之間，再加入3%～5%的碳酸鋯銨後並攪拌5分鐘後再加入1%～7%的奈米氧化物後並攪拌10分鐘，則完成本發明塗層液A。In the fourth stirring step d, when the inner pot is lowered to a temperature between 25 ° C and 30 ° C, 3% to 5% ammonium zirconium carbonate is added and stirred for 5 minutes, and then 1% to 7% nanometer oxide is added. After stirring for 10 minutes, the coating liquid A of the present invention is completed.

請參閱圖2至圖6所示，另本發明紙製容器基材之製法，可在一般塗佈機B且配合使用本發明前述塗層液A，即本實施例配合圖3所示的塗佈機B來說明本發明塗層液A的使用方式，其中該紙製容器基材之製法，係包含有：一基材步驟e，係將該基材1可安置於塗佈機B，其中該基材1可設為食品級紙材；一塗佈步驟f，係使用本發明塗層液A且於該基材1的單一表面或雙表面塗佈有一塗層(圖5及圖6)，而該塗佈表層的塗佈厚度係設為0.003mm～0.3mm之間；及一乾燥步驟g，係將塗佈有該塗層液A的基材進入具有80℃～120℃的乾燥箱B1內，以固化該塗層1，最後在將該基材製造成如圖4所示的各種紙製容器。Please refer to FIG. 2 to FIG. 6. In addition, in the method for manufacturing a paper container substrate of the present invention, the general coating machine B can be used in conjunction with the aforementioned coating liquid A of the present invention, that is, this embodiment cooperates with the coating shown in FIG. 3. A cloth machine B is used to describe the application method of the coating liquid A of the present invention. The method for manufacturing the paper container substrate includes: a substrate step e. The substrate 1 can be placed in the coating machine B, where The substrate 1 can be a food-grade paper; a coating step f is to use the coating liquid A of the present invention and apply a coating on one or both surfaces of the substrate 1 (FIGS. 5 and 6). The coating thickness of the coating surface layer is set to be between 0.003 mm and 0.3 mm; and a drying step g is to put the substrate coated with the coating liquid A into a drying box having a temperature of 80 ° C to 120 ° C. In B1, the coating 1 is cured, and finally the substrate is manufactured into various paper containers as shown in FIG. 4.

綜上所述各實施例，本發明係關於一種「紙製容器基材及其塗層液成份、塗層液製備方法」，且其構成方法未曾見於諸書刊或公開使用，誠符合專利申請要件，懇請　鈞局明鑑，早日准予專利，至為感禱；需陳明者，以上所述乃是本專利申請案之具體實施例及所運用之技術原理，若依本專利申請案之構想所作之改變，其所產生之功能作用仍未超出說明書及圖式所涵蓋之精神時，均應在本專利申請案之範圍內，合予陳明。In summary of the above-mentioned embodiments, the present invention relates to a "paper container substrate and a coating liquid composition and a coating liquid preparation method", and its composition method has not been seen in books or publications, and it complies with the patent application requirements. Please kindly ask Jun Bureau for a clear reference and grant the patent at an early date. It is my prayer. Those who need to know the above are the specific examples of this patent application and the technical principles used. If it is done in accordance with the concept of this patent application When the changes and the functions produced by them do not exceed the spirit covered by the description and drawings, they shall all be submitted to Chen Ming within the scope of this patent application.

A‧‧‧塗層液A‧‧‧coating liquid

a‧‧‧步驟a‧‧‧step

b‧‧‧步驟b‧‧‧step

c‧‧‧步驟c‧‧‧step

d‧‧‧步驟d‧‧‧step

e‧‧‧步驟e‧‧‧step

f‧‧‧步驟f‧‧‧step

g‧‧‧步驟g‧‧‧step

B‧‧‧塗佈機B‧‧‧coating machine

B1‧‧‧乾燥箱B1‧‧‧drying box

1‧‧‧基材1‧‧‧ substrate

2‧‧‧塗層2‧‧‧ Coating

圖1：本發明紙製容器基材的塗層液成份及其製備方法之示意圖。圖2：本發明紙製容器基材的製造方法之示意圖。圖3：本發明藉由塗佈機來實施紙製容器基材表面塗層之示意圖。圖4：本發明施作於各種紙製容器之示意圖。圖5：本發明塗層於塗佈於紙製容器基材的單一表面之剖面圖。圖6：本發明塗層於塗佈於紙製容器基材的雙表面之剖面圖。Fig. 1: Schematic diagram of the coating liquid composition and the preparation method of the paper container substrate of the present invention. FIG. 2 is a schematic diagram of a method for manufacturing a substrate for a paper container according to the present invention. FIG. 3 is a schematic diagram of the surface coating of a paper container substrate by a coating machine according to the present invention. Fig. 4 is a schematic diagram of the present invention applied to various paper containers. FIG. 5 is a cross-sectional view of the coating of the present invention on a single surface coated on a substrate of a paper container. Figure 6: A cross-sectional view of the coating of the present invention on both surfaces of a substrate coated on a paper container.

Claims

一種紙製容器基材之塗層液成份，係包含下述組成物：重量百分比大約8%～30%的聚胺酯共聚物；重量百分比大約8%～30%丙烯酸酯共聚物；重量百分比大約8%～9%羧基丁苯膠乳；重量百分比大約0.4%～0.6%的三聚磷酸鈉；重量百分比大約2%～3%的1,2-丙二醇；重量比大約3%～5%碳酸鋯銨；重量比大約1%～7%奈米氧化物；及重量比25%～60%的去離子水之成分；藉由上述組成物充分攪拌均勻以構成100%的乳白色液狀塗層液。A coating liquid component of a paper container substrate comprises the following composition: about 8% to 30% by weight of a polyurethane copolymer; about 8% to 30% by weight of an acrylate copolymer; about 8% by weight ～ 9% carboxy styrene-butadiene latex; about 0.4% to 0.6% sodium tripolyphosphate by weight; about 2% to 3% of 1,2-propylene glycol; about 3% to 5% ammonium zirconium carbonate; weight The ratio is about 1% to 7% of nanometer oxide; and the content of deionized water is 25% to 60% by weight; the above composition is fully stirred to form a 100% milky white liquid coating liquid.

如請求項1所述紙製容器基材之塗層液成份，其中該奈米氧化物可設為奈米氧化鋅、奈米氧化鋯、奈米氧化矽、奈米氧化錳等氧化物的任一成份或其兩種以上混合。The coating liquid component of the paper container substrate according to claim 1, wherein the nano-oxide can be any oxide such as nano-zinc oxide, nano-zirconia, nano-silicon oxide, nano-manganese oxide, and the like. One ingredient or a mixture of two or more.

如請求項1所述紙製容器基材之塗層液成份，其中該塗層的黏度設為(Ford cup#4/25℃)：25～50sec.。The coating liquid component of the paper container substrate according to claim 1, wherein the viscosity of the coating is set to (Ford cup # 4/25 ° C): 25-50 sec.

一種紙製容器基材塗層液之製備方法，係包含如下步驟：一第一攪拌步驟，係於一內鍋放於具有水的外鍋，再將該去離子水、三聚磷酸鈉置入於該內鍋一起攪拌；一第二攪拌步驟，續於該內鍋緩慢加入該聚胺酯共聚物、丙烯酸酯共聚物後，以隔水加熱方式將該內鍋升溫並保持至92℃～94℃之間，並攪拌均勻後關閉熱源，以進行冷卻；一第三攪拌步驟，當該內鍋降至45℃～50℃之間，則再加入該羧基丁苯膠乳並攪拌均勻後，再加入該1,2-丙二醇並攪拌均勻；及一第四攪拌步驟，當該內鍋降至25℃～30℃之間，再加入該碳酸鋯銨、奈米氧化物並攪拌均勻後完成乳白色液狀塗層液。A method for preparing a coating solution for a paper container substrate comprises the following steps: a first stirring step, placing the inner pot in an outer pot with water, and placing the deionized water and sodium tripolyphosphate in Stir together in the inner pot. A second stirring step is continued from the inner pot. After slowly adding the polyurethane copolymer and the acrylate copolymer, the inner pot is heated and maintained at 92 ° C to 94 ° C in a water-proof heating manner. After the mixture is stirred evenly, the heat source is turned off for cooling; a third stirring step, when the inner pot is lowered to between 45 ° C and 50 ° C, the carboxy styrene-butadiene latex is added and stirred evenly before adding 1 , 2-propanediol and stir well; and a fourth stirring step, when the inner pot is lowered to between 25 ° C and 30 ° C, the ammonium zirconium carbonate and nanometer oxide are added and stirred to complete the milky white liquid coating liquid.

如請求項4所述紙製容器基材塗層液之製備方法，其中於該外鍋得加裝有熱交換器，可加速該外鍋內的熱水加速降溫，提升製劑效率。The method for preparing a coating material for a paper container substrate according to claim 4, wherein a heat exchanger is added to the outer pot, which can accelerate the accelerated cooling of the hot water in the outer pot and improve the efficiency of the preparation.

一種紙製容器基材之製法，係使用請求項1或請求項2所述塗層液，係包含有：一基材步驟，係將該基材可安置於機器者，其中該基材設為食品級紙材；一塗佈步驟，係使用該液狀塗層液並於該基材的單一表面或雙表面塗佈一塗層；及一乾燥步驟，係將塗佈有該塗層的基材進入具有80℃～120℃的乾燥箱內後，以固化該塗層。A method for manufacturing a substrate for a paper container, using the coating liquid described in claim 1 or claim 2, comprising: a substrate step, wherein the substrate can be placed on a machine, wherein the substrate is set as Food-grade paper; a coating step using the liquid coating solution and applying a coating on one or both surfaces of the substrate; and a drying step applying a base coated with the coating After the material enters a drying box having a temperature of 80 ° C to 120 ° C, the coating is cured.

如請求項6所述紙製容器基材之製法，其中該表層的厚度係設為0.003mm～0.3mm之間。The method for manufacturing a paper container substrate according to claim 6, wherein the thickness of the surface layer is set to be between 0.003 mm and 0.3 mm.