Shanghai KUNGKING Industrial Co., LTD
Business consulting: Andy 13917974131
Contact number: 021-39531206
Address: Workshop in Area 8, No. 558 Xinye Road, Qingpu Industrial Park, Shanghai, China
1. Development prospect of TPUTPU is mainly used for inflatable products, health care/medical products, vacuum forming, magnetic tape, foam of cushion, belt, protective layer, liner, etc.At present, China mainly produces low-end TPU, so China's domestic high-end market has huge development potential.TPU has great application prospect in many fields. TPU is mainly used in melting and spinning spandex, shoe material industry, synthetic leather industry, film industry, hose and cable industry, caster industry, adhesive industry, etc.However, at the same time, they are also facing strong substitute competition in many fields. Only by constantly innovating and investing, increasing IN-DEPTH RESEARCH and development of TPU, and reducing production costs, can domestic TPU producers achieve sustainable development and promote TPU products to more fields.2. TPU is widely used in the following fields:Footwear: TPU is widely used in footwear production. It is mainly used as sole material and shoe accessories, such as signage, buckle, ornament, outer layer of sole, transparent upper, etc. It can replace rubber, thermoplastic polyolefin and other materials.Hoses: TPU hoses are widely used for gas transmission and oil transportation of aircraft, tanks, cars, motorcycles, machine tools and other mechanical equipment.TPU tube has the advantages of good flexibility, stable size, transparency, chemical resistance and hydrolysis resistance, no pollution, pressure resistance and so on.Melt-spun spandex: The melt-spun spandex produced with fibre-grade TPU is characterized by good elasticity, easy downstream processing, no pollution, long storage life, chemical resistance and hydrolysis resistance.Automobile: mainly used for exterior parts of automobile body, fenders, main side parts, coupling, bumper, shaft liner, gasket, sealing ring, wing nut, instrument cover and oil pipe bushing, etc.Sheath for wires and cables: Insulation must be protected from climatic, environmental, hydrolytic and other physical damage.TPU can meet the demanding requirements of the field, with excellent low temperature flexibility, weather resistance, moisture resistance and antibacterial properties.Films and sheets: The films and sheets produced by TPU have excellent low temperature flexibility, good wear resistance and tear resistance, good transparency, easy coloring, etc.Its main applications include lifeboats, life jackets, raincoats, conveyor belts and collapsible storage tanks.Adhesives: widely used in surface treatment of nylon, polyester and PU fabrics and leather, with chemical resistance, uv resistance, hydrolysis resistance, low temperature flexibility, high elongation, bending fatigue performance and other characteristics.Varnish and ink: TPU adhesive can be mixed with pigments and solvents to prepare varnish and ink.Varnish and ink can be sprayed or printed on different substrates. The main applications are sports shoes, handbags, umbrellas, upholstery, toys, etc.Solution coating: TPU can be directly coated or transferred coated.Fabrics coated with PVC or polyurethane and coated with TPU solution can be used to produce high-performance products instead of leather for upholster, handbags, suitcases and other products.Antistatic and conductive materials: studies have shown that the failure of 25%-75% electrical components is related to the accumulation of static electricity, thermoplastic alloy can be permanent antistatic, without the danger and pollution of static electricity.
TPU has been widely used in: shoes, tailors, inflatable toys, water and underwater sports equipment, medical equipment, fitness equipment, car seat materials, umbrellas, leather cases, leather bags, etc.TPU film is widely used in sports shoes: trademark decoration on sole and vamp, air bag, air cushion, oil bag, etc.Today, there are two more trends for TPU films in athletic shoes:First, the popular trend caused by Nike sneakers is to print TPU film on screen first, then to form with high frequency and glue it on the vamp for decoration, so as to achieve special decoration effect.The second is to use waterproof and moisture permeable TPU film and shoe material cloth to apply, in order to achieve the waterproof and moisture permeable effect.Note during the injection molding of TPU plastic materials: The main reasons for various adverse phenomena of injection molding are as follows:1. Due to the difference in nature of plastic raw materials,2. Improper setting of molding conditions, such as temperature, pressure and firing rate, etc.3. Defects in the design or production of forming molds;4. The shape and thickness of the molding products are poorly designed.5, injection molding machine selection is not appropriate, insufficient ability caused by, in fact, poor injection molding is not simple, is usually caused by the above factors multiple interwoven, the judgment of bad reasons depends on the operator's experience and skills. Mold filling process.Suggest when processing can consult relevant professional personnel first, in order to reduce loss cost. Use: plastic raw materials market from our own shoes to daily necessities, to electrical appliances, automotive, aviation, satellite and other cannot leave the plastics, with the urban construction and the development of agricultural production factory, the demand of our country in terms of a single year reached 260000 tons, with industry growing demand for the need of plastic raw material with life, multinational companies and investment of polycarbonate construction industry in our country.The main features of TPU are:Wide hardness range: products with different hardness can be obtained by changing the ratio of TPU reaction components, and with the addition of hardness, the products still adhere to outstanding elasticity and wear resistance.High mechanical strength: TPU products have outstanding bearing capacity, impact resistance and shock absorption.Outstanding cold resistance: TPU has a low glass transition temperature and still maintains good elasticity, flexibility and other physical functions at minus 35 degrees.Good machining performance: TPU can be processed by common thermoplastic materials, such as injection molding, extrusion, calendering and so on.At the same time, TPU and some polymer materials can be processed together to obtain functional complementary polymer alloys.
How can waterproof and permeable fabric be permeable to moisture?Waterproof and moisture permeable fabric is a kind of high-tech and unique functional fabric, in which water does not soak into the fabric under a certain pressure, but the sweat emitted by the human body can be transmitted to the outside world in the form of water vapor, so as to avoid the accumulation and condensation of sweat between the body surface and the fabric to maintain the comfort of clothing.Waterproof is not a problem for ordinary fabric workers, the key is how to achieve moisture permeability.Let's take a closer look at the types of waterproof and moisture permeable fabrics.One, through the fiber to achieve moisture permeability1. Venter fabric.The earliest waterproof breathable fabrics were the famous Ventile fabrics.Designed in the 1940s by the Shirley Institute in England, it is a high-count, low-twist, pure cotton yarns of Egyptian long-staple fabric with high density, heavy and flat weave. It was originally used in the cold and immersion suits of British Air Force pilots during World War II.When the fabric is dry, the gap between the warp and weft yarns is large, about 10 microns, providing a highly moisture permeable structure;When rain or water falls on the fabric, the yarns expand, reducing the gap between the yarns to 3-4 microns. This closed-hole mechanism is combined with a special water-repellent finish to ensure that the fabric is not further penetrated by rain.At present, this kind of fabric has been replaced by other waterproof and moisture permeable fabrics.2. Coolmax fabrics.International large companies such as Dupont and Toray of Japan have studied the way of creating pores inside the fiber to expel sweat from the body, that is, the hygroscopic and sweat draining fabric on the market.This kind of fiber production technology is concentrated in the hands of such large international companies, the price is relatively high, difficult to become the mainstream market.Second, through the coating to achieve moisture permeabilityA variety of coating agents with waterproof and moisture permeability functions are applied on the surface of the fabric by direct dry coating, transfer coating, foam coating, phase inversion or wet coating (solidification coating), etc., so that the surface pores of the fabric are closed or reduced to a certain degree by coating agents, thus obtaining water resistance.The moisture permeability of the fabric is obtained by the interaction between the hydrophilic groups in the coating agent and the water molecules by means of hydrogen bonds and other intermolecular forces, which adsorb the water molecules on the high humidity side and transmit them to the low temperature side.The coating fabric is widely used because of its low price and certain moisture permeability.However, due to its poor waterproof and moisture permeability and unsatisfactory hand feel, the market share is gradually decreasing.The wet transfer coated fabric developed now makes the coated fabric glow with a new machine. It not only has high physical indexes such as waterproof and moisture permeability, but also can be treated with 100% Teflon. The washing fastness can reach more than 25 times, and the handle is also very good.Third, through laminating waterproof moisture permeability film to achieve moisture permeability1. The diameter of water vapor molecules in PTFE film is 0.0004 microns, while the diameter of light fog with the smallest diameter in rain water is 20 microns, and the diameter of drizzle is as high as 400 microns. If the film with pore diameter between water vapor and rain water can be produced, isn't it possible to be both waterproof and permeable?GORE of the United States became the first company to produce the film using polytetrafluoroethylene (PTFE), which was laminated with a fabric to produce gore-Tex.However, due to PTFE's very strong chemical inertia, there are few materials that can press it well with other fabrics, and the first generation fabrics have very poor fastness.Later, through continuous efforts, through other hydrophilic film sublayer together into a composite film, and on the film for special treatment, the fastness greatly improved.It is generally believed that the water pressure of Gore-Tex fabric can reach 10000mm, and the water pressure drops significantly after 6-7 times of washing.The moisture permeability can be as high as 10000g/ SQM * 24Hrs, but this is not a value that can be achieved with the newly made fabric. Several times of washing is needed to remove part of the glue. The available pores increase and the moisture permeability increases.TPU film TPU is short for thermoplastic polyurethane film and belongs to non-porous hydrophilic film.Because the film itself has no pores, it is naturally waterproof, but it also keeps the fabric windproof and warm.Moisture permeability is mainly realized through its hydrophilic characteristics. Depending on the difference of steam pressure inside and outside the clothes, the steam is transferred from the place with high pressure to the place with low pressure, thus realizing the function of moisture permeability.
The TPU film referred to here is an industrial adhesive, also known as TPU hot melt film products.Tpu film is mainly suitable for the composite and adhesion of arts and crafts.Tpu thin film domestic demand is relatively large, the large demand is bound to drive the rapid development of the seller's market.On the current industry market and comprehensive consideration of the raw material market near the stage of instability, it can be said that demand is greater than supply!Tpu film has several characteristics: low compound temperature, high elasticity, good waterproof performance, good air permeability.These characteristics of its application in leather, shoe materials, microfiber, mobile phone leather cases, computer bags, clothing, sports fabrics, ceramics, textiles and other industries when the composite use better adaptability!The wide application industry increases the market demand for TPU thin film, and there is still a gap between the existing domestic production capacity distribution and the overall demand market.D96b67490f9fa41af581fd3dc0b6bcd. PNGHaving said so much, I simply sum up how to choose tPU film manufacturer:1. There is a reason why the brand awareness in the industry is high in popularity. Although it cannot be taken as the final standard, it has a high reference value;2. Production scale: The production scale can be said to be a side reflection of the product quality of the enterprise. It is difficult for the enterprise to develop into a large-scale without excellent product quality;3. Product processing and production equipment: If it is necessary to establish a long-term and stable cooperative relationship, it is the best way to visit the factory.Field study of the factory's production status, capacity, etc., so as to build confidence in cooperation.4. Service quality of the enterprise: The service includes communication in the early stage, communication in the middle stage and after-sales technical support. The service quality provided by the enterprise is also an important reference.
Tpu hot-melt film can be divided into thermoplastic and thermosetting types according to its service characteristics. It has the following characteristics:1, has a good consistent, uniform bonding thickness 2, easy to process, no solvent, easy to process;3. Good adhesion to many objects;4. The thickness is 0.1-0.203mm and the color is translucent/amber;5, can be blanked into accurate shapes and sizes, suitable for purely manual or automated applications.Product application:Can bond metal, plastic, paper, wood, ceramics, textiles and other materials, in the uneven surface of the object can also get good results;It is mainly used for adhesion of nameplate, plastic and hardware, adhesion of metal shell of electronic products, adhesion of reinforcement plate, laminated adhesion of smart card and chip-type passport, adhesion of window frame and front cover of mobile phone, adhesion of battery slot of camera, etc.Major international brands and models:3M: 3M615, 3M668, 3M583, etc.TESA: TESA8432, TESA8475, etc.Scarpa: H193, H192, etc.
With TPU hot melt adhesive as raw materials for the production of hot melt adhesive film series in the hot glue industry has been popular, become a kind of new composite material, and can be used in different industries, bringing the Gospel to more and more enterprises, it is a revolution of industrial production, is a kind of inevitable trend of development of hot melt adhesive film industry!The scale of hot melt film market in Mainland China has become the largest market of hot melt adhesive in the world several years ago.Although the scale of the hot melt adhesive market in Mainland China is large, its annual growth rate is still the fastest in the world.With the rapid development of domestic industry, textile industry, clothing industry and so on, the demand for thermal bonding process is also increasingly strong. Hot-melt adhesive film occupies a very important position in the whole composite market!In the current situation, hot melt film has a firm foothold, but the development will always meet a bottleneck.There are many problems to be solved in the reproduction of hot melt film, such as environmental protection requirements, applicable industry, such as quality control and so on.This series of problems need to be solved!First, let's talk about environmental protection!Hot melt glue enterprise development tuyere is environmental protection, as people's living standard rises with each passing day, people also is higher and higher to environmental protection quality requirement.In recent years, China has carried out around the voc emission control and environmental protection situation increasingly tightens, people environmental protection consciousness has increased, the related legal policy is also more and more strict, the domestic environmental situation is very serious in our country, so the hot melt adhesive of environmental protection should be as an important turning point in the enterprise development, enterprise only for positioning, accurate, can grasp the opportunity and to win.Secondly, the rapid development of hot melt adhesive industry forces innovation, only constant innovation can keep up with the pace of the industry, innovation can be from the quality, differentiation, service and so on.I believe that hot melt film in the near future will be used in more and more industries to go!