300T full dull polyester pongee fabric PVC coated fabric for rain coat and garment fabric
See DetailsThe composite of double-line ribbed pongee and black PU film is a process that closely combines two materials through specific technical means. This process not only requires a good bonding interface between the materials, but also ensures that the composite fabric meets high standards in appearance, feel, breathability, strength and durability. However, achieving this goal is not easy, and the key lies in the precise control of temperature and pressure.
In the composite process, temperature plays a vital role. It not only affects the thermoplasticity of the material, but also directly determines the curing speed and effect of the adhesive.
Effects of excessive temperature:
Material deformation and damage: Pongee fabric and PU film may shrink or expand at too high a temperature, causing material deformation, which in turn affects the dimensional stability and appearance of the composite fabric.
Overcompression: The pressure under high temperature may cause the material to be overcompressed, reduce the breathability and feel of the composite fabric, and even cause damage to the internal structure of the material.
Premature curing of adhesive: Too high a temperature will accelerate the curing process of the adhesive, which may cause the adhesive at the bonding interface to cure before it completely soaks the material surface, thus affecting the bonding strength and durability.
Effects of too low a temperature:
Poor bonding: When the temperature is too low, it is difficult for the adhesive to fully melt and penetrate into the material surface, resulting in insufficient amount of adhesive at the bonding interface and reduced bonding strength.
Incomplete curing: The curing speed of the adhesive slows down at low temperatures, which may lead to incomplete curing and affect the long-term stability and durability of the composite fabric.
Complementary to temperature control is pressure control. During the composite process, the role of pressure is to promote close contact between the adhesive and the material surface and to ensure uniform distribution of the adhesive at the bonding interface.
Effects of excessive pressure:
Material damage: Excessive pressure may cause indentations, cracks or tensile deformations on the material surface, affecting the appearance and feel of the composite fabric.
Over-compression: Similar to over-compression at high temperatures, excessive pressure may also cause damage to the internal structure of the material and reduce the air permeability and elasticity of the composite fabric.
Adhesive extrusion: Under excessive pressure, the adhesive may be squeezed out of the bonding interface, resulting in unnecessary glue overflow, which not only affects the aesthetics of the composite fabric, but also may reduce the bonding strength.
Impact of insufficient pressure:
Loose bonding: When the pressure is insufficient, the adhesive may not be able to form a close contact with the material surface, resulting in gaps at the bonding interface, affecting the bonding strength and sealing.
Uneven distribution of adhesive: Insufficient pressure may also lead to uneven distribution of adhesive at the bonding interface, with too much adhesive in some areas and too little in some areas, thus affecting the overall performance of the composite fabric.
In the composite process, temperature and pressure do not exist in isolation, but are interrelated and work together. The increase in temperature can accelerate the melting and curing process of the adhesive, while the increase in pressure helps to promote close contact between the adhesive and the material surface. However, this synergistic effect is not linear, but there is an optimal balance point. Too high or too low temperature and pressure may destroy this balance, resulting in a decrease in the quality of the composite fabric.
In order to achieve precise control of temperature and pressure, a series of technical measures need to be taken:
Advanced temperature control system: A high-precision temperature control system is used to monitor and adjust the temperature during the composite process in real time to ensure that the temperature fluctuates within the set range.
Pressure sensor and feedback mechanism: A pressure sensor is installed on the composite equipment to monitor the pressure changes during the composite process in real time and automatically adjust the pressure through the feedback mechanism.
Material performance test: Before composite, the performance of the polyester pongee fabric and the PU film is tested to understand the thermoplasticity, elasticity and adhesive compatibility of the materials, so as to provide a basis for determining the optimal composite parameters.
Process optimization and testing: Through repeated tests and optimization, the optimal composite process parameters, including temperature, pressure, time, etc., are determined to ensure the stable and reliable quality of the composite fabric.
Under precise temperature and pressure control, the double-line ribbed polyester pongee and black PU film composite fabric exhibits excellent performance. It not only has excellent waterproof, windproof, breathable and wear-resistant properties, but also maintains good hand feel and aesthetics. These characteristics make the composite fabric widely used in clothing, home textiles, automotive decoration and outdoor products. For example, in the clothing field, composite fabrics are used to make outdoor clothing such as raincoats and jackets, providing all-round protection for the wearer; in the home textile field, composite fabrics are used to make bedding such as sheets and quilt covers, improving the comfort and aesthetics of the home environment; in the automotive decoration field, composite fabrics are used to make interior products such as car seat cushions and trunk mats, which not only have practical functions, but also highlight the taste and personality of the car owner.