Synthetic leather second half of 2008 trends

From the Asia-Pacific Leather Fair in Hong Kong in March to the Guangzhou Leather Fair in May, we can easily find that high-gloss leather and gorgeous crystal synthetic leather and even pvc crystal leather occupy the entire leather market, and from all fashion We also see in the information, highlight the bright handbags, clothing and shoes is the trend of the second half of this year or even next year. This article highlights the characteristics and application of high brightness materials, synthetic leather to provide technical support for enterprises to develop products less detours, follow the trend of the trend to help. In fact, shiny products is a long time ago, the previous mirror leather has been very hot products, especially in the second half of last year, due to the market selling hot mirror products, resulting in the supply of mirror paper in short supply. In order to get brighter than the mirror products, the use of double mirror technology and the material inside mixed with bright pearl powder or metal sense of aluminum powder silver powder to improve the surface brightness of synthetic leather. However, moisture curing, oil skin and other materials development and application, making brighter and more crystal sense of synthetic leather production possible. First, moisture curing Moisture curing resin is the moisture curing material that started to be produced on the market in the second half of last year. Now it has been widely used. The general application is as follows: 1, process: spray or roller coating. Ratio: Moisture curing resin 100g Butyl ester 50g Fast drying agent 0.1-0.5g Antifoam 0.2g 0.1g leveling agent Dye water 10g Operation flow: wet semi-finished veneer or color change - (printing) ---- embossing ---- spray or roller coating (coating 100g / m) --- on the shelf in a dust-free environment, humidity 80 %, Temperature 20-30 ℃. Place 6-8 hours --- winding package. Product Features: Crystal sense of strong, bright colors and transparent. Variety Initially, the products manufactured by moisture curing were limited to PU leather bags, but with the development of new materials, a series of moisture-curing materials are now being used. Soft moisture curing materials developed for soft synthetic leather, low modulus, good bonding. Can be applied to stretch leather bags and glossy leather clothing. Shock-resistant moisture-curable materials for the leather synthetic leather design, folding at -15 ℃ to more than 20,000 times. Can be widely used in shoe leather production. Anti-yellowing of moisture vapor curing materials used in yellowing requirements of light-colored leather bag, yellowing resistance can reach four. Moisture wax sensation of moisture curing can give wet steam cured surface of a variety of touch, bags, shoes, clothing and decorative leather and so provide a wide range of highlight high-gloss crystal products. 3.PVC moisture curing Because PVC artificial leather is made of PVC resin and DOP plasticizer, DOP precipitation tends to occur on the surface of PVC semi-finished products, which brings difficulties to the combination of moisture curing material and PVC. Now developed a moisture curing material by adding 3% anti-DOP exudation additives, effectively prevent the precipitation of DOP, to prevent the oil point. Production of crystal PVC leather bright eye-catching, PVC products for the upgrading of the factory has created a new level. Synthetic leather produced by the moisture curing process is completed in a dry process, requiring not only a large, dust-free workshop, but also a slower, more costly manufacturing process. Some factories because of such conditions, it is difficult to produce such a high-gloss products, therefore, the production of imitation moisture vaporized material has become a must. Second, the oil skin Imitation moisture vapor curing material is also known as the oil skin material, simplifying the moisture curing drying process, the material is added butyl ester and dye water mixing, roller coating and spraying process, directly into the oven after drying check shipment, Crystal effect is basically close to moisture curing products. Because of the surface with a touch of oil and oil called skin. Because of the convenient and simple production of oil skin, it is widely used at present, not only occupying a part of moisture curing in luggage leather, but also leading in shoe leather. And the trend of development will certainly be extended to next year or even longer. There are a variety of oil skin materials, there are nitrocellulose polyurethane raw materials. According to different product types and requirements have different choice of materials. General leather bags require brightness and plastic feel, and the surface of non-stick hand oil sense, so most of the use of nitrocellulose materials, shoes require good physical properties and oil, it is generally used polyurethane oil skin material. There are two-component oil skin material, the two components before use by the ratio of three to one after the mixing roll or spray, the product is good transparency, strong crystal sense. The bright green polyurethane water-based leather and other advantages of environmental protection has become a highlight of the oil skin material. The future of oil skin material not only widely used in leather bags and leather shoes, leather in the garment, leather furniture, decorative leather will also be widely used. Third, polishing Polishing process has now been widely applied to the production of synthetic leather, the principle is to make the surface of the matte finish by grinding its oil become bright, add a sense of the level of texture and leather sense. The general process is: Wet semi-finished veneer --- embossing --- Printing and polishing agent --- Dried into a roll --- polishing machine polishing - rubbing pattern --- into seized. With the production of leather and leather garment polishing process, the leather surface is rich sense of hierarchy, and then by rubbing processing, the more rubbing the top of the pattern brighter, more natural nature. Recently there is a new material is rubbed water polishing material, the second half of the garment leather, shoe leather provides a new direction. Process: Wet semi-finished veneer (or embossed) --- Printing special treatment --- drying --- water kneading - Routine --- Chengchao. Fourth, shiny surface washed Washable garment leather has always been very popular, but after washing the garment surface are fog, giving people an old feeling. According to the needs of the market, this year should also conform to all the prominent bright trends. Bright surface wash materials, passed the test of several large companies, has been affirmed. Basic steps: bright surface washed material, aqueous organic brown slurry, deionized water mixed and stirred at 5: 1: 1 → 80 mesh printing, drying (3 minutes, 130 ℃) → pre-shrinking machine by shrinking machine → drying volume Skin-like effect: The shiny surface washes made products for the style, especially the top bright and shiny, and the bottom of the pattern is formed with a very good sense of hierarchy, full of stylish bright style. Fifth, highlight the coating With nylon fabric and other fabric as the substrate, straight coating machine straight coating high solid bright resin, produced by the bright coating material has an unexpected effect this year. Most of the previous coating is acrylic coating, due to environmental protection and other factors, acrylic coating decreases, while the ordinary PU coating and can not reach high light highlight requirements, highlight coating material to fill this gap, by Coating factory of all ages. The procedure for using the bright coating agent is the same as that of the ordinary PU coating. The two materials are used in combination because one is soft for the coating and the other one is for the high modulus to prevent the coating from sticking. Meanwhile, It also increases the brightness of the coating. So according to different requirements to choose the right ratio to deploy, the ratio between the two is the former general: the latter = 1: 2. Production process should pay attention to fully dry, oven air volume and temperature appropriate to increase, otherwise easy to produce indentation, dead wrinkles and so on. At present the above new materials have been more mature, have been in the synthetic leather enterprises have been applied.