尽管目前植绒产品繁多,设备也各不相同,植绒工艺流程大体如下:进料、上浆、植绒、预烘、焙烘、刷毛、后整理、成品。流程示意图如下:
Though there are many kinds of flocking products and different devices, the flocking process is generally as follows: feeding, sizing, flocking, pre drying, baking, brushing, finishing and finished products. The flow chart is as follows:
水性聚氨酯,水性聚氨酯静电植绒胶水
Waterborne polyurethane, waterborne polyurethane electrostatic flocking glue
1.上浆。根据产品和底材性质,选择不同性能的粘合剂。根据不同材料和性能可以选用水性聚氨酯粘合剂或丙烯酸类粘合剂。如橡胶、塑料、钢材、玻璃、木材等为底材时,主要考虑粘接牢度。服装用而料,既要考虑耐水洗牢度,又要考虑手感柔软以及透气、透湿性能等。粘度太小植上的绒毛可能倾斜,粘度太大则妨碍植入深度,降低强度。涂层量大,会使手感差,且延长烘燥时间;涂层量少,则摩擦牢度降低。调整适当的粘度和涂层量才能确保植绒质量。
1. sizing. According to the properties of the product and the base material, the adhesive of different properties is selected. Waterborne polyurethane adhesives or acrylic adhesives can be selected according to different materials and properties. Such as rubber, plastic, steel, glass, wood and so on as the base material, the main consideration of adhesion fastness. Clothing for material, not only to consider the fastness of water washing, but also to consider the soft feel, air permeability, moisture permeability and so on. The fluff on the small viscosity may be inclined, and the viscosity is too large to prevent the depth of the implant and the strength. When the coating is large, the hand feel is poor and the drying time is prolonged; the coating quantity is less, and the friction fastness is reduced. In order to ensure the quality of the flocking, the proper viscosity and the amount of the coating are adjusted.
上浆方式目前主要采用辊筒法和刮刀法。对于植花(局部植绒),则采用圆网或平网印浆法对花纹部印浆,要求均匀、边界清晰,不能有起泡或空白点,植绒后形成植绒花纹。
At present, the sizing method mainly adopts the roller method and the scraper method. For planting flowers (local flocking), circular net or flat screen printing method is applied to print evenly, clear borders, no bubbles or blanks, and flocking after flocking.
2.植绒。植绒方式主要有提升式、下落式、侧植式和上下拼植式四种。提升式:绒毛在输送带上进入电场,在静电作用下绒毛自下而上飞升插入底材粘合涂层中粘合剂中。提升法被植物在上方,下落法加工物在下方。提升法需要两条输送装置,即被加工物输送和绒毛输送,结构复杂,传送时张力较大,若强力不大的织物就很难加工。不连续生产,则提升法比较好,因为绒毛在静电场作用下一部分植入粘合剂中,多余的绒毛会自然落下,植绒表面浮绒较少。下落法则另加一个吸绒装置,将在绒面的浮绒吸去,目前多数植绒机均采用下落式。侧植式适用于片块状物体的植绒,提升下落拼植法适用于线状物体的植绒。
2. flocking. There are four main ways of flocking, such as lifting, falling, side planting and up and down. Hoist: the villi enter the electric field on the conveyor belt, and the villi rise from bottom to top and insert into the adhesive in the adhesive coating of the bottom material under the electrostatic action. The lifting method is above the plant, and the processing object is below. The lifting method requires two conveyer devices, that is, the processed materials and the villi transport. The structure is complex and the tension is large when the transmission is transmitted. If the fabric is not strong, it is difficult to process. In the case of discontinuous production, the lifting method is better, because the fluff will naturally fall down when part of the chap is implanted into the adhesive under the action of the electrostatic field, and the velvet surface is less. The falling law plus a cashmere device will be sucked away on the suede, and most of the flocking machines are down. The side planting is suitable for the flocking of block shaped objects, and the lifting method is suitable for the flocking of linear objects.
植绒室的心脏是高压静电发生器。通常要求直流电压达20-200千瓦,两电极之间的距离按公式E二V/H可求得,式中:E为电场强度(v/m);v为极板电压(v);H为极板短离(m),一般为10厘米以内,电场强度1-5千瓦/厘米,绒毛以100-200厘米/秒的速度垂直插入底材表面的粘合剂中。为了确保车速较快时的植绒质量,可采用多套静电发生器,或者增加打击振动装置,来补充静电力的不足。
The heart of the flocking room is a high voltage electrostatic generator. Usually require DC voltage up to 20-200 two kilowatts, the distance between the electrodes can be obtained according to the formula of E two V/H, in which E is the electric field strength (v/m); V (V); voltage H (m), from the short plate is generally less than 10 cm, the electric field strength 1-5 kW / cm, villous to 100-200 cm / sec vertically inserted into the bottom surface of the adhesive. In order to ensure the quality of the flocking when the speed is faster, a number of electrostatic generators are used, or the vibration device can be added to supplement the shortage of static electricity.
3.热固。植绒完毕后需进行热处理,以使绒毛、粘合剂和底材牢固结合。一般都有两个阶段:预烘和焙烘,具体视粘合剂种类而定。加热方式也有多种,通常采用热风循环方式较好,既可达到粘合剂交联温度,又能使粘合剂中水分尽快脱离。烘燥温度还应注意到底材性质,防止材质在较高温度下会变形。热处理在烘箱中完成,其质量对植绒牢度影响较大。为了确保热处理的温度和时间,若车速较快时,应适当加长烘箱长度。
3. thermosetting. After flocking, heat treatment is needed to make the fluff, adhesive and bottom wood firmly combined. Generally, there are two stages: pre baking and baking, depending on the type of adhesive. There are also a variety of heating methods, usually using hot air circulation way better, not only to the adhesive crosslinking temperature, but also can make the adhesive in the moisture out as soon as possible. The drying temperature should also pay attention to the properties of the material, and prevent the material from deforming at a high temperature. The heat treatment is completed in the oven, and its quality has a great influence on the fastness of the flocking. In order to ensure the temperature and time of heat treatment, if the car speed is faster, the length of the oven should be lengthened properly.
4.刷毛。在植绒后虽吸去浮绒,但在间隙中还有残余绒毛,一般采用毛刷逆底材运动走向的方式,进行一次刷毛清洗。也有采用机械拍打、吹风等方式相结合进行处理,则效果更佳。如不需后整理加工,则刷毛后即可得到成品。
4. brush hair. After the flocking, although it sucked down the fleece, there was still residual fluff in the gap, and a brush was usually used to clean the brush. There is also a combination of mechanical slapping and blowing, and the effect is better. If the finishing process is not needed, the finished product can be obtained after the brush.
5.后整理.后整理的目的是锦上添花和提高产品附加值。例如:全面植绒(又称满地植绒)虽然赋予产品绒的风格,但美中不足色彩单一,于是采用印花(或转移印花)加工方法,印上各种彩色图案,而成为印花植绒产品;通过轧辊热压(轧辊上刻有凸型图案)压花(轧花),使局部绒毛在高温下变形固化,成为轧花植绒产品;利用喷管上若干小孔,喷出过热蒸汽使绒毛受热变形,且喷汽口横向有规则地往复与织物纵向直线运动,形成了一定形状的几何图案,成为喷花植绒产品;利用磨毛工艺,将植绒织物表面绒毛磨细,达到仿魔皮绒效果;采用化学处理法(仅对复合纤维)将植绒产品浸渍在溶液中,溶去“海”部分纤维,形成仿桃皮绒、仿丝绒产品,等等。以上仅列举了一部分后整理方法。总的来说目前后整理方法很多,但开发力度还不够,有很多课题需要我们探索研究。
5. after finishing. The purpose of the finishing is to add and increase the added value of the product. For example: a comprehensive flocking (also known as Montreal flocking) giving products cashmere style, but in want of perfection single color, so the use of printing (or transfer printing) processing method, printed with various color patterns, and become the flocking products; through hot pressing roller (roller with convex embossed pattern), the local fluff (crimped) curing deformation under high temperature, be ginning flocking products; using the number of holes on the nozzle, spray the villi in superheated steam heat distortion, steam jet and horizontal reciprocating regularly and fabric vertical linear motion, forming a geometric pattern shape, become stencil printing flocking products; the sanding process, the flocking fabric surface fluff grinding to imitation magic suede effect; with chemical treatment method (for composite fiber) will be flocking products are immersed in a solution, solution to the "sea" part of the fiber formation, imitation peach, velvet products, etc.. Only a part of the finishing method is listed above. In general, there are many methods of finishing, but the development is not enough. There are many topics that need us to explore and study.