Four major non-woven fabric and film composite technologiesTime of issue : 2020- 11-25
With the maturity of the initial processing of non-woven fabrics, more and more companies are turning their attention to the deep processing of non-woven fabrics in order to maximize the added value of products and increase the profits of enterprises. In China, the application fields of hot melt coating equipment have also been continuously expanded. The medical and sanitary material production sectors are the most widely used industries of this type of equipment. The rapid development of the automobile industry in China has also stimulated the According to the demand for coating equipment, relevant data show that the domestic geotextile industry recently introduced the first hot melt production line so far. As a mature and constantly developing process, the prospect of hot melt coating technology in the deep processing industry of non-woven fabrics will get better and better. Disposable medical supplies (such as surgical gowns, surgical sheets, wet wipes, gloves, shoes, hats, etc.), industrial protective products, and personal care products are mainly non-woven composite film products. These industries have The requirements are almost the same, namely waterproofness, breathability and comfort. This article will analyze and compare several main technological characteristics of current medical and sanitary material composites: 1. Laminating: This kind of technology is the most used method in domestic enterprises. Features: simple, mature, and fast production speed ( About 100m/min). Disadvantages: Do not make products that require breathability; feel hard and have poor comfort; higher requirements for non-woven fabrics. Non-woven fabrics with low weight (below 18gsm) and low coating weight (below 15gsm) have unsatisfactory coating effect, because the unevenness of the surface of the coil makes the coating process prone to leaks. 2. Hot rolling: It is the standard process for the two-step manufacturing of SMS non-woven fabrics. Many domestic companies use this process for composite manufacturing of films and cloths. Features: ready-made equipment and technology can be used. Disadvantages: The composition of the film is PE, and the composition of the non-woven fabric is polypropylene. The different melting points of the two make the temperature of the hot roll cannot be considered at the same time; the heat capacity of the hot roll causes different production speeds at the same temperature to lead to the uniformity of the composite strength of the product Poor; the processing accuracy of the hot embossing roll is also a factor that affects the quality of the product; the hot rolling method has a higher air permeability loss rate for the air permeable film material (between 30-40%); the production speed is slow. 3. Cloth powder compounding: A method of evenly sprinkling hot melt adhesive powder on the non-woven fabric or film, and then compounding by heat. Features: The heat pressure roller uses rubber band roller and smooth roller to cause little damage to the material. Disadvantages: slow production speed and low production efficiency; even distribution of hot melt adhesive powder is the key to product quality, but the easy hygroscopicity of hot melt adhesive powder makes it difficult to spread evenly, and the amount of distribution is not good Control; the melting temperature of hot melt adhesive powder is higher, and the melting temperature of breathable film is lower. The hot melt adhesive powder cannot be completely melted during compounding, resulting in insufficient peel strength and poor surface flatness of the compound film. 4. Hot melt adhesive breathable coating compound: Features: faster production speed, low breathable loss rate of breathable film material (between 20-30%). Disadvantages: equipment investment is large (a set of 1600mm effective width hot melt adhesive breathable coating composite hot melt adhesive system costs more than 400,000 US dollars); the gluing weight is high (at an angle of 180 о, strength 3.0N/inch composite requirements For example, the amount of glue used can reach 4gsm or more); the coating head needs to be in contact with the coating material during coating, which requires high stability and flatness of the winding and unwinding equipment; the coating process exerts relatively high tension on the material However, non-woven fabrics and films are required to run under low tension, otherwise it is easy to cause stretching and deformation of the material, and the product will wrinkle after compounding, which will affect the quality of the product.
Process equipment flow overviewTime of issue : 2020- 11-25
1.2 Overview of the process equipment flow 1. Into the cotton The raw staple fiber is manually placed on the long curtain in proportion, and the long curtain is conveyed to the entrance of the mixer. 2. Cotton blending 2-1 Use photoelectric control to control the feeding amount of cotton fed by the cotton feeder; 2-2 Use photoelectricity to control the amount of cotton stored in the blender and quantify the thickness or weight before sending it to the opening machine entrance. 3. Opening 3-1 The feeding part is controlled by the photoelectric control of the cotton feeder. 3-2 The opened raw material (short fiber) is sent to the cotton feeder through the material pipeline by a fan. 4. For cotton 4-1, use a photoelectric switch to control the raw material fed from the opener. 4-2 Use the photoelectric meter on the diagonal nail curtain to control the raw material sent to the entrance of the carding machine.入量. 5. Pre-carding 5-1 Use the frequency conversion to control the input amount thickness or weight 5-2 Method: Manually fine-tune the speed of the frequency converter and send it to the netting machine. 6. Laying machine The raw material that enters the laminating machine is fed into the main carding machine by cross-folding more than 5 layers of staple fibers that have been laid out in the horizontal and vertical directions. 7. Main carding 7-1 Frequency conversion control of the flake staple fiber sent from the web-laying machine. 7-2 The raw material the staple fiber is split through the cylinder, work roll and stripping roller. 7-3 The doffer The raw material short fiber is transferred to the messy roll. 7-4 The messy roll disrupts the fiber to increase the transverse strength. 7-5 The stripping roll strips the forming web from the messy roll and sends it to the web conveying curtain. Three-layer composite 7-6 The edge trimmed by the trimming machine enters the hot rolling. The trimmed trim is sent to the cotton feeder through the air duct. 8. Hot rolling The sheet material short fiber that enters the upper and lower hot rolls of the hot rolling mill from the main combing machine is subjected to hot press forming by adjusting the temperature and pressure of the hot roll to adjust the temperature and pressure required by the process. *The temperature of the hot roller, the hot oil 235240℃, is sent to the upper and lower hot rollers by the hot oil pump from the heating oil furnace. *Heat roller pressure: compressed air provided by the air compressor passes through the pressure regulating device, the upper pressure is 1.2MPa, the lower pressure is 0.80.9MPa, and enters the pressure regulating cylinder. 9. The product from the hot rolling mill is rolled after trimming. Long rolls are wound into rolls. The maximum diameter of rolls is 800mm. 10. Finished product inspection and weighing 10-1 Sampling and testing its physical indicators according to product quality standards (10-2) Weigh each roll of product. 11. Rewinding If there is a requirement for the number of broken ends of the product from the winding machine during the winding process, rewind and mark the broken ends. 12. Packaging, warehousing, leaving the factory 12-1 Different products are packaged and labeled, 12-2 the packaged products are put into the warehouse, and 12-3 are sold and left.
Non-woven shoe cover machineTime of issue : 2020- 11-25
Overview Non-woven shoe cover machine, also known as foot mask machine, is a special machine for automatic production of elastic non-woven fabrics, plastic shoe covers or foot masks. The output can reach 30 pieces per minute. This shoe cover machine is suitable for hospitals, foot baths, and saunas. , Beauty industry or dust-free industry, the whole machine is fully automated from automatic feeding to finished products without any manual operation. Functions and features 1. Stitching: Use ultrasonic waves to directly sew all kinds of fabrics without needle thread, so as to achieve waterproof effect.
Features of automatic non-woven bag making machineTime of issue : 2020- 11-25
1. The use of ultrasonic welding eliminates the need for needle and thread, saves the trouble of frequent needle and thread changes, and does not have the broken thread joints of traditional thread stitching. It can also perform neat partial cutting and sealing of textiles. Stitching also plays a decorative role. It has strong adhesion, can achieve waterproof effect, clear embossing, more three-dimensional relief effect on the surface, fast working speed, good product effect and high-end beauty; quality is guaranteed. 2. Using ultrasonic and special steel wheel processing, the edge of the seal will not crack, will not damage the edge of the cloth, and there will be no burrs or curling. 3. No preheating is required during manufacturing, and continuous operation is possible. 4. It is easy to operate, not much different from traditional sewing machine operation method, ordinary sewing workers can operate it. 5. Low cost, 5 to 6 times faster than traditional machines, and high efficiency. 6. The weight is about 2 tons. 7. This machine can make vest bags, handbags, flat pockets, gusset bags, gusset bags, stable and efficient. 8. Five sets of ultrasonic systems 9. T-shirt bag: length 50-60cm can be set to a maximum length of 80cm, flat bag: 30 cm wide and 70-80 pcs/min; 50 cm wide and 50-60 pcs/min, generally 70g Non-woven fabric to make bags.
Application of non-woven fabrics in medicineTime of issue : 2020- 11-25
Changshu Ruiyang Non-woven Machinery Co., Ltd. specializes in the production of non-woven equipment, non-woven bag making machines, PET needle punching production lines and non-woven post-processing equipment. Non-woven fabrics are used in all walks of life.
With the development of medicine, traditional medical pure cotton imitation products have been gradually replaced by medical non-woven products. Only in terms of environmental protection, medical non-woven fabrics are even better. The greater advantage is that it is one This species has the characteristics of high filtration of bacteria and dust, low surgical infection rate, convenient disinfection and sterilization, and easy compounding with other materials, so it is very popular. The above is the extensive use of non-woven fabrics in medical applications.
Material and processing range of non-woven bag making machineTime of issue : 2020- 11-25
The automatic non-woven bag making machine is suitable for non-woven fabrics. It can process various specifications and shapes of non-woven bags, vest bags, handbags, leather bags, etc. The machine integrates machine and electricity into one. Use touch screen operation. Equipped with step-by-step fixed length, photoelectric tracking, accurate and stable. Automatic counting can set up counting alarm, automatic punching and other industrial control devices, so that the finished product can be sealed tightly and cut beautifully. High-speed efficiency, it is a high-quality environmentally friendly bag-making equipment that you can use with confidence.
The automatic non-woven bag making machine feeds powder (colloid or liquid) from the feeder into the hopper above the packaging machine in real time. The introduction speed is controlled by the photoelectric positioning device. The roll of sealing paper (or other packaging materials) ) Driven by the guide roller, it is introduced to the lapel former. After being bent, it is overlapped by the longitudinal sealer into a cylindrical shape. The material is automatically metered and filled into the finished bag. The transverse sealer performs heat sealing and cutting at the same time Pull the bag tube down intermittently, and finally form a three-sided flat bag with overlapping longitudinal seams to complete the sealing of a bag.
The processing range of the fully automatic non-woven bag making machine is a variety of plastic or other materials with different sizes and thicknesses. Generally speaking, plastic packaging bags are the main products. Of course, the automatic non-woven bag making machine is mainly woven products. It not only produces fully automatic non-woven bag making machines, but also various bag making machines.
Non-woven equipmentTime of issue : 2020- 11-25
Wú fǎng bù shèbèi zhòng yào rúhé xuǎnyòng xuánzhuǎn jiētóu?
Gāowēn xuánzhuǎn jiētóu zài wú fǎng bù hángyè yìngyòng zhèlǐ yào zhùyì liǎng diǎn:
Yī shì gāowēn. Dàjiā dōu zhīdào gāowēn de hányì shì shénme. Gāowēn xuánzhuǎn jiētóu yībān dōu shì yòng dǎorè yóu xuánzhuǎn jiētóu zuìduō. Ér dǎorè yóu xuánzhuǎn jiētóu jiù yào tèbié zhùyì dào yālì hé wài xiè wèntí. Rúguǒ xuánzhuǎn jiētóu chéngshòu bùliǎo gāowēn qíngkuàng xià de yālì, yǒu kěnéng chǎnshēng zhàliè huò pēn yóu. Suǒyǐ, yīdìng yào bǎ ānquán fàng zài dì yī wèi. Zài xuánzhuǎn jiētóu zhìzuò hé shǐyòng shí ké tǐ de chéngshòu yālì shì zuì guānjiàn de. Pái zài dì èr wèi de shì mìfēng jiàn wèntí. Rúguǒ mìfēng jiàn bùnéng chéngshòu gāowēn, bù nài mó, xuánzhuǎn jiētóu jiù méiyǒu jiàzhí kě yán. Suīrán dǎorè yóu xuánzhuǎn jiētóu jiégòu hěn jiǎndān, dànshì xuǎncái yīdìng yàohǎo. Mìfēng huán yào kàng yā, kàng gāowēn, nài mó. Tánhuáng yào néngnài gāowēn, bǔcháng lìdù yào shǐzhōng. Bǔcháng lì guo dà, mìfēng jiàn mósǔn kuài, suōduǎn dǎorè yóu xuánzhuǎn jiētóu shǐyòng shòumìng. Bǔcháng bùgòu lì. Xīn de dǎorè yóu xuánzhuǎn jiētóu yīyàng huì xièlòu.
Èr shì wú fǎng bù dàduō shì báisè de, xuánzhuǎn jiētóu chǎnshēng xièlòu jiù hěn róngyì wūrǎn dào wú fǎng bù, zàochéng wú fǎng bù chéngpǐn hé yuáncáiliào de làngfèi. Tàng guāng jī yībān zhǐ yòng liǎng dào sì tái xuánzhuǎn jiētóu, jiànyì yòng gāodàng yīdìng de zuì hǎo.
Yīnwèi tàng guāng jī zhè duàn rúguǒ xuánzhuǎn jiētóu chūxiàn xièlòu zuì róngyì wūrǎn wú fǎng bù. Wǒmen zhīdào yào zhùyì de shìxiàng hòu, zài xuǎnyòng dǎorè yóu xuánzhuǎn jiētóu de shíhòu, jiù yào wèn qīngchǔ dǎorè yóu xuánzhuǎn jiētóu de shǐyòng cānshù. Lìrú: Yālì, wēndù, zhuǎnsù, bǎoxiū qī děng. Wú fǎng bù shèbèi shǐyòng dǎorè yóu xuánzhuǎn jiētóu hái yào zhùyì jǐ diǎn: Shǐyòng zài tàng guāng jī de dǎorè yóu xuánzhuǎn jiētóu yǒu yòng diàn yǔ yóu jiārè de, yào zhùyì nèijìng hé zìjǐ xuǎnyòng de jiārè bàng luówén shìfǒu wěnhé. Shǐyòng gāowèi yóu guàn xíngshì jiārè de, yào zhùyì yīdìng shì jìn yóu dà, chū yóu xiǎo. Bìng suàn hǎo lùjìng chángduǎn, gǔntǒng dàxiǎo, hé gǔntǒng zhuǎnsù, chǎnpǐn xūyào wēndù; zhǐyǒu liǎojiě zhèxiē yǐhòu cáinéng quèdìng yào shǐyòng duōdà de xuánzhuǎn jiētóu. Rúguǒ shì guōlú jiārè de, yīyàng yào liǎojiě yóu sù, guǎndào chángduǎn, gǔntǒng dàxiǎo, hé gǔn tǒng zhuǎnsù, chǎnpǐn xūyào wēndù. Rúguǒ shìguò jiāo yòng de xuánzhuǎn jiētóu yībān dōu shì xuǎnyòng yīcùn dān xiàng de. Chāi zhuāng fāngbiàn, yóu de liúsù kuài. Jiànyì xuǎnyòng zhítōng shì de, bìmiǎn xuǎnyòng 90°wān jiǎo de xuánzhuǎn jiētóu. Zhèyàng kěyǐ jiāsù rè yóu xúnhuán. Tíshēng gǔn tǒng wēndù. Bìmiǎn rèliàng liúshī. Zuì hǎo, měi gè xuánzhuǎn jiētóu yù guǎndào liánjiē chù ānzhuāng xiǎo fámén, zài dāngè dǎorè yóu xuánzhuǎn jiētóu chūxiàn xièlòu de qíngkuàng xià, kěyǐ chāi huàn hé zàntíng yīgè gǔn tǒng de jiā wēn.
Wú fǎng bù shēngchǎn gōngyì zhǔyào yòngtú
•(1) yīliáo wèishēng yòng bù: Shǒushù yī, fánghù fú, xiāodú bāo bù, kǒuzhào, niào piàn, fùnǚ wèishēng jīn děng;
•(2) jiātíng zhuāngshì yòng bù: Tiē qiáng bù, táibù, chuángdān, chuángzhào děng;
•(3) gēn zhuāngyòng bù: Chènlǐ, nián hé chèn, xù piàn, dìngxíng mián, gè zhǒng héchéng gé dǐ bù děng;
•(4) gōngyè yòng bù: Guòlǜ cáiliào, juéyuán cáiliào, shuǐní bāozhuāng dài, tǔgōng bù, bāo fù bù děng;
•(5) nóngyè yòng bù: Zuòwù bǎohù bù, yùyāng bù, guàngài bù, bǎowēn mù lián děng;
•(6) qítā: Tàikōng mián, bǎowēn géyīn cáiliào, xī yóuzhān, yān guòlǜzuǐ, dài bāo cháyè dài děng.
How to choose rotary joints in non-woven equipment?
Two points should be paid attention to in the application of high temperature rotary joint in the non-woven fabric industry:
One is high temperature. Everyone knows what high temperature means. High temperature rotary joints generally use thermal oil rotary joints. The heat transfer oil rotary joint must pay special attention to pressure and leakage problems. If the rotary joint cannot withstand the pressure under high temperature conditions, it may explode or spray oil. Therefore, we must put safety first. When the rotary joint is manufactured and used, the pressure of the shell is the most critical. In second place is the seal problem. If the seal cannot withstand high temperatures and is not wear-resistant, the rotary joint will be worthless. Although the structure of the heat transfer oil rotary joint is very simple, the material selection must be good. The sealing ring must be resistant to pressure, high temperature and wear. The spring must be able to withstand high temperatures, and the compensation must be constant. If the compensation force is too large, the seals wear quickly and shorten the service life of the heat transfer oil rotary joint. The compensation is insufficient. The new thermal oil rotary joint will also leak.
Process flow and characteristics of non-woven equipment spinning cotton production lineTime of issue : 2020- 11-25
The so-called spinning cotton production line is to mix the chemical fiber bonding fiber with lower melting point into the cotton sheet of pure cotton or chemical fiber cotton. After heating, the low melting point bonding fiber is melted and crosslinked with other fibers, thereby connecting the cotton and other fibers. The cotton sheet obtained by bonding chemical fiber cotton together, the hot melt quilt is made of hot melt cotton batting according to the quilt standard
Detailed description of the structural classification of sound-absorbing panelsTime of issue : 2020- 11-25
Ultrasonic mop cloth/non-woven cloth wiping glove machineTime of issue : 2020- 11-25
Ultrasonic mop cloth/non-woven glove wiping machine (NKMZ01) Machine overview: The wiping cloth is made of ultra-fine high-quality fibers through ultrasonic cutting, because its soft texture does not produce scratches and does not damage the surface of the object to be wiped, and because The characteristics of its material also have strong liquid absorption capacity and dust holding capacity. Therefore, the wipe cloth is widely used in kitchens, furniture, floors, electrical appliances, industrial equipment, instruments, and automobiles. The Nanfang Lijin Ultrasonic Wiping Machine uses the principle of ultrasonic vibration and friction to make the joint surface of the fiber fabric reach high temperature in an instant and then pressurize to join. This stitching process is soft and delicate, and the cost of needle-free sewing is low. In addition, the automatic feeding mechanism design of the Nanfang Lijin wiper machine completely eliminates manual operation from feeding to the finished product. It can produce 50-80 wipes per minute, which greatly reduces the production cost.