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Eco-friendly & Low-carbon Non-woven Technology

 Hot-melt is acupuncture, spunlace, spunbond, meltblown process as the more widely used. Hot melt adhesive bonding process include legal, legitimate and ultrasonic hot sticky sticky legal. Thermal bonding reinforcement compared to other strengthening methods of production speed, low energy consumption, good for environmental protection, application flexible. This article comes from the textile resources, direct users please enter in the browser view of textile resources.  
Non-woven production, hot sticky legal is acupuncture, spunlace, spunbond, melt blown process as the more common applications, this technology is the use of heat to the real fiber mesh reinforcement bonding.
As the process of low energy consumption, less pollution, is also a low-carbon hot sticky legal environment of non-woven process. nonwoven fabrics manufacturers,

Most of thermoplastic polymer material, that is heated to a softening temperature will melt and become sticky with some liquid fluid, cooling then re-solidified into a solid. Thermal bonding process is a by heating, deformation, melting, flow and process of curing their physical connection. It uses thermoplastic polymer materials, thermoplastic properties, so that the heated part of the fiber web fibers or melt powder softening melting, produce adhesion between fibers, fiber networks have been reinforced after cooling thermal bonded non-woven material has become. Adhesive material commonly used thermoplastic polymers, such as low melting point synthetic fibers, thermoplastic polymer powders and polymer film,  adult diaper,etc..

Three ways to use energy

Hot melt adhesive bonding process include legal, legitimate and ultrasonic hot sticky sticky legal, in which hot melt adhesive and hot sticky legal most widely used.

Hot melt adhesive technology is the use of drying room on the media mixed with hot-melt fiber network of heating, forming a web of hot melt fibers or melt powder melt heat, melt the polymer flow and cohesion in the fiber cross-point, After cooling, fiber networks are becoming non-woven material bonded reinforcement. Development of hot melt adhesive fibers non-woven materials to expand the application of hot melt adhesive, depending on their choice and ratio of product applications and customer requirements, hot-melt adhesive fibers mixing ratio is usually 10% to 50%
As a pre-bonding time of 5% to 10%, the actual production should be non-woven materials, the ratio of the final application requirements, thin products are usually 100% of the hot melt adhesive fiber.

Hot melt adhesive of the process: short fibers (plus some hot-melt fiber) - Opening Song impurity - mix - carding Net - Shop Net - hot air drying - finished.

Thin non-woven fabrics normally used for high-grade sanitary hot air, without a roll, and hot melt cotton, imitation silk, hard cotton (cushion material) greater weight, will be subject to roll out their networks.
Melt in the hot air drying the key, because hot air through fiber network, so that the fibers melt together to form links with each other thin or thick fluffy floc sheet materials. non woven SMS fabric,

Hot-rolled non-woven adhesive bonding technology in the heat of late, has borrowed a printing and dyeing industry calendering, hot light technology, because of its production speed, no waste problems, which developed rapidly. Early 80s of last century, the United States, the rise of disposable diapers, hot-rolled polypropylene nonwoven material as the diaper fabric to replace the original viscose, polyester fiber as the main legitimate chemical adhesive nonwoven material. Hot glue production speed, which is particularly suitable for thin non-woven materials, spunbonded reinforcement. nonwoven shopping bags,

Hot Law process, including:

Short fiber system: short fiber - opening and impurities - Mixed - combed into a network - hot glue - Finished

Filament systems: polymer chips - melt spinning - Sway roll - hot - finished.

Hot method lies in the hot roll process is generally hot rollers from the fiber Netcom, mutually connected to fiber melting and rolling thin as cloth-like material. disposable face masks,

Ultrasonic bonding energy from mechanical vibrations to electrical energy conversion, transducers convert electrical energy to mechanical vibration 20kHz high frequency energy, vibration transmission through the horn to transfer vibration, amplitude further amplification. Ultrasonic bonding, they were bonded fiber web or laminated material feeding transmission vibration and the gap between the rolls, fiber network or laminated materials in the implant pin of the local area will be some pressure, in the fiber network in the region by the ultrasonic fiber material incentives, fiber friction between the internal micro-structure of the heat generated, ultimately leading to fiber melting. Under the action of pressure, ultrasonic bonding will occur and the same hot melt adhesive, flow, diffusion and cooling processes. surgical gown,

Achievements of the four competitive low-carbon technology

Thermal bonding reinforcement compared with other reinforcement has the following characteristics:

Production speed thermal bonding production rate is generally 5 ~ 15m/min (including thin hot air transmission rate is higher). Hot glue is generally 20 ~ 60m/min,  car cover, advanced equipment up to 100 ~ 120m/min or more.
Hot sticky legal process more fully reflect the technical characteristics of non-woven production.

Low energy consumption, low melting point fibers or two-component fiber is the basic legal hot sticky material, although the cost of higher than liquid adhesives, but the overall cost is lower than the chemical sticky legal. To polypropylene thermal bonded reinforcement, for example, energy consumption per kilogram of product than the impregnated non-woven reinforcement bonding energy is much lower.
With the low melting point fibers and bicomponent fiber production technology and production costs, the advantage of thermal bonding technology will be more significant.

Thermal bonded products do not benefit the environment with any chemical reagent, harmless to human body, health good performance, very suitable for the production of medical supplies and use, there is no waste generated during production, there is no noise, the work of environmental pollution, good
in environmental protection,.

Application of flexible thermal bonding can be used as the main means of fiber reinforcement, direct production of non-woven fabrics, but also as a means of secondary reinforcement to improve the deficiencies of other non-woven process.
For example, acupuncture reinforcing fiber network fiber mixed with a small amount of hot melt, hot melt glue needle and then through the non-woven fabrics can significantly improve the strength, improve product strength aspect ratio.

Finished products to show their talents in various fields

Hot sticky legal process by the typical hot-rolled products, thin non-woven staple fibers, filament non-woven, non-woven hot air, hot cotton (similar to cotton, cotton-free glue), hot pad material (hard cotton
) and other products.

From the application point of view, thermal bonded non-woven fabrics mainly for health care, packaging, farm cloth, warm materials, interlining, lining, pad materials and other fields, is so widely used.

Among them, the hot melt adhesive products have fluffy high, good elasticity, soft, warm and strong and so on. Using a network - hot melt bonding process can be made for winter clothes, blankets, baby sleeping bags, mattresses, sofa cushions, etc. fluffy hot melt non-woven; used to form a network - Acupuncture - hot melt adhesive can be production of high-density non-woven fabrics for the production of filter materials, insulation materials, cushioning materials, automotive molding carpets, wall carpets, clothing lining and so on. Hot-rolled non-woven fabrics as high yield, low cost, without any chemical reagent characteristics, are widely used in disposable products such as surgical hat, mask, women's sanitary napkins, baby diapers, adult incontinence pads and all kinds of protection
clothing and work clothes such as manufacturing.

In addition, for the harvest cloth, geotextile, electrical cable insulation, battery separator, packaging materials, clothing lining, leather fabric, waterproof materials.

Ultrasonic bonding technology is mainly used in fiber network bonding reinforcement, especially for fluffy, soft non-woven products, after-machining, for decoration, warm material, gowns, masks and sewing and cutting carpet various non-woven fabrics, quilting process alternative.

 

 

Adapted from Zend International Co.:   www.non-wovens.com

 
 
 
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