瓦楞紙箱在防潮生產(chǎn)中，除了保護(hù)包裝免受水的浸泡外，主要是防止水對(duì)紙箱本身的影響。要防潮制作，通常用涂料防水劑的方法來(lái)解決。因此，根據(jù)防水劑的作用可將防水紙箱的防潮方法分為:臨時(shí)防水處理和防水處理。
Corrugated box in the production of moisture-proof, in addition to protect the packaging from water immersion, mainly to prevent the impact of water on the box itself. To make moisture-proof, usually with the method of coating waterproof agent to solve. Therefore, according to the function of waterproof agent, the moisture-proof methods of waterproof cartons can be divided into temporary waterproof treatment and permanent waterproof treatment. Shanghai corrugated box
臨時(shí)防水劑:瓦楞紙板在生產(chǎn)過(guò)程中使用臨時(shí)防水劑后，具有臨時(shí)防水劑的功能。當(dāng)水落在紙板上的時(shí)間較短時(shí)，不要弄濕成水滴，可以防止紙板被水浸濕。
Temporary waterproof agent: after using temporary waterproof agent in the production process of corrugated board, it has the function of temporary waterproof agent. When the water falls on the cardboard for a short time, do not wet it into water drops, which can prevent the cardboard from being wet by water.
這種涂料初用于織物纖維，后來(lái)用于紙板。因此，大多數(shù)紙箱廠都采用代理的名稱。代理是一種蠟乳液,一般固體含量:48% ~ 51%,和一個(gè)大的特點(diǎn)是當(dāng)使用可用的30倍水稀釋,然后涂在已初具規(guī)模的瓦楞紙板臉,溫度約150℃干燥后,紙張表面纖維由于包裹的醋,和較的表面張力,表面形成的水滲透。
This coating was originally used for fabric fibers and later for cardboard. As a result, most carton factories use the name of agent. The agent is a wax emulsion. The general solid content is 48% ~ 51%, and a large feature is that when the water can be diluted 30 times as much as it can be used, then it is coated on the corrugated board face that has begun to take shape. After drying at about 150 degrees, the surface fiber of the paper is penetrated by the water formed by the wrapped vinegar and the lower surface tension. Shanghai corrugated box
當(dāng)與水接觸時(shí)，水不浸泡在板上，形成水珠滾落，從而達(dá)到防水效果。然而，蠟對(duì)紙纖維的附著力并不好，尤其是當(dāng)脫水機(jī)被稀釋30倍時(shí)，其固含量?jī)H為1.5+，紙表面纖維只有很薄的一層蠟包裹。也由于蠟蠟乳液粒徑通常超過(guò)通常的聚合物乳液粒徑大,深入到紙張纖維滲透率是困難的,同時(shí)把代理一般敏感明礬一類化學(xué)物質(zhì),通常在紙表面很快破乳和降水下米,所以大部分畫蠟粒子從水在紙上只有很薄的一層存在。
When in contact with water, the water will not be soaked on the board, forming water drops to roll off, so as to achieve waterproof effect. However, the adhesion of wax to paper fiber is not good, especially when the dehydrator is diluted 30 times, its solid content is only One point five +The fibers on the paper surface are only covered with a thin layer of wax. Also because the wax wax emulsion particle size usually exceeds the usual polymer emulsion particle size, the penetration into paper fiber is difficult. At the same time, the agent generally sensitive alum a chemical substance, usually on the surface of the paper quickly demulsification and precipitation of rice, so most of the wax painting particles from water on paper only exist very thin layer.
在外摩擦作用下，蠟很容易被摩擦掉，纖維表面無(wú)蠟包裹，防水效果大大降。摘要為提高蠟對(duì)紙纖維的附著力，水萃取劑中往往含有松香衍生物或羧基聚合物乳液，它們對(duì)紙纖維的附著力好，與蠟的相容性好。這樣，它們的加入可以促進(jìn)蠟對(duì)紙纖維的粘附，而如果蠟被改性，如氧化、自由基等，也有類似的效果，可以使蠟對(duì)紙纖維的粘附增加。
Under the action of external friction, the wax is easy to be rubbed off, and there is no wax wrapping on the fiber surface, so the waterproof effect is greatly reduced. In order to improve the adhesion of wax to paper fibers, water extraction agents often contain rosin derivatives or carboxylic polymer emulsions, which have good adhesion to paper fibers and good compatibility with wax. In this way, their addition can promote the adhesion of wax to paper fiber, and if the wax is modified, such as oxidation, free radicals, etc., it has a similar effect, which can increase the adhesion of wax to paper fiber.
但是小編提醒,除了這些措施,水萃取劑的濃度的形成不是一層防水膜,所以在遇到摩擦,如箱處理,堆放過(guò)程中摩擦,往往使這個(gè)防水表面失去作用。這就是為什么這種紙箱的涂層作為臨時(shí)防水紙箱。目前，吸水劑已廣泛應(yīng)用于一些紙箱廠，并已成為一種基本工藝。
However, Xiaobian reminds that in addition to these measures, the concentration of water extractant is not a waterproof membrane, so in the process of friction, such as box treatment, stacking, friction often makes this waterproof surface ineffective. That's why this kind of carton coating acts as a temporary waterproof carton. At present, water absorbent has been widely used in some carton factories, and has become a basic process.
另外，不同的水萃取劑，其原料和制備工藝往往是不同的，在水的比例上有一些差異，利用好適當(dāng)?shù)乃谋壤欠浅Ｖ匾?。如果含水率過(guò)高，吸水度會(huì)明顯降，無(wú)法達(dá)到防水效果。含水量過(guò)，常在紙板表面形成深色蠟油，損壞紙板的外觀。
In addition, different brands of water extractants have different raw materials and preparation processes. There are some differences in the proportion of water. It is very important to make good use of the appropriate proportion of water. If the water content is too high, the water absorption will be significantly reduced, unable to achieve the waterproof effect. Moisture content is too low, often in the cardboard surface form dark wax oil, damage the appearance of the cardboard.
