How much do you know about sizing machinery and composite fabric information?

1. Overview of sizing machinery: The basic components of a sizing machine include: creel frame, sizing device, drying mechanism and head. 1. Classification of sizing machines: (1) Classification of drying methods: Hot air type: drying through heat and moisture exchange between hot air and wet sized yarn (as shown below) Drying cylinder type: contact between wet sized yarn and the surface of the hot drying cylinder The combined type of vaporized moisture hot air drying cylinder: hot air pre-baking + drying cylinder drying (2) is classified according to the sizing mechanism: single pulp tank, multiple pulp tanks (double), single immersion and single pressure, single immersion and double pressure, double immersion and double pressure, double slurry Dip four-pressure single-shaft sizing machine: The weaving beams rolled by the slit warping machine are sized and dried. Sizing and dyeing combined machine: The same machine is used to prepare sizing and dye two or more tanks to dye and sizing the yarn pieces separately and continuously. Sizing combined machine: The warp yarns drawn from the creel directly enter the sizing tank to size yarns and filaments (overseas). 2. The process flow of three typical sizing machines: (1) Hot air sizing machine: The drying efficiency is too low and the heat energy consumption is large. Matched with shuttle loom, the price is 300,000 yuan cheaper. Advantages: good sizing film forming (2) Drying cylinder sizing machine: High drying efficiency, high sizing speed, strong variety adaptability, simple structure, but the sizing film forming is not as good as the hot air type, which is the type imported from abroad. GA308 type, 2.4 million yuan Import: 360,000 US dollars – 2.9 million yuan (3) Combined sizing machine: It has the advantages of good hot air sizing film formation and high drying efficiency of the drying cylinder. It adopts double sizing tanks and is suitable for High-density fabric sizing. Benninger 2. Warp creel: referred to as creel The warp yarn → is led from the creel → merged piece yarn ← total warp number. Prepare for sizing, drying and rolling the weaving beam. Number of warp beams: 12 shuttle sizing machines, 16, 20, 24 shuttleless looms. Creel type: one-row type, mountain type, double-layer type. 3. Sizing device mainly includes: yarn introduction roller, sizing tank ( Immersion roller, sizing roller, pressing roller), moisture content twisting rod. 1. Dip and press: The warp yarns are subjected to repeated dipping and pressing in the sizing tank. The number of times of dipping and pressing varies according to different fibers and different post-processing requirements. Single dipping and single pressing: suitable for viscose fiber warp yarn sizing, which can reduce The sizing yarn has wet elongation; Single dipping and double pressing: suitable for medium and thick special cotton yarn; Double dipping and double pressing and double dipping and four pressing: warp sizing of synthetic fiber blended yarn and general high warp and density fabrics is more conducive to the penetration and coating of the slurry. (As shown in the picture below) 4. Drying device: 1. Tasks and requirements of sizing drying: Basic task: evaporate excess moisture in wet sizing to achieve the sizing moisture regain required by the process. The drying process is closely related to the quality of sizing. Requirements: (a) The drying process is required to form a complete serous film and make the hairiness adhere. (b) The elongation of the yarn during drying should be reduced as much as possible and the original elongation should be maintained. (c) A good drying process can make full use of the provided heat energy, improve drying efficiency, reduce energy consumption, and reduce production costs. (d) The drying device has a simple structure and is easy to maintain and operate. 2. Sizing machine drying method and principle (1) Convection heating method: used in hot air sizing machines, by blowing heated air to the surface of the sizing yarn at a certain speed to transfer heat to the wet sizing yarn. Advantages: ① The effect is uniform and gentle, and the sizing yarn has a full feeling; ② Adjacent sizing yarns have less adhesion to each other and have good film-forming properties; ③ The yarn separating rod separates yarn easily, and there is less sizing and fluffing. Disadvantages: ① Low drying efficiency and high steam consumption; ② Long threading length in the drying room, prone to accidental elongation; ③ Difficulty in breaking ends and complex drying room structure. (2) Heat conduction method: Drying cylinder sizing machine. Advantages: ①The yarn is in direct contact with the surface of the high-temperature drying cylinder, which has large drying capacity and high efficiency. ②The temperature is easy to control. The drying drum can be divided into arrays. ③The yarn runs close to the drying drum and the arrangement will not be disrupted. At the same time, the yarn elongation is uniform and easy to control, and the yarn elongation is only about 60% of that of the convection heating method. ④The drying room has a simple structure and is easy to operate and maintain. Disadvantages: When the yarn is wet, it is in direct contact with the surface of the high-temperature drying cylinder and easily adheres to the surface of the drying cylinder, destroying the integrity of the slurry film. The surface of the drying cylinder is coated with a polytetrafluoroethylene anti-stick layer. 5. Front part: The weaving beam winding requires constant tension, uniform winding density, and good weaving beam winding shape. The upper and lower shafts of early sizing machines were mechanical semi-automatic upper and lower shafts, which were highly labor-intensive. The new sizing machines all adopt hydraulic or pneumatic upper and lower shafts to reduce the labor intensity of workers. Automatic control content: (a) Warp unwinding tension control (b) Sizing tank liquid level control (c) Sizing tank slurry temperature control (d) Pressure roller pressure change control with vehicle speed (e) Drying room temperature control (f) Sizing moisture regain control (g) Automatic control of weaving beam pressure roller pressure
AAA functional fabric network SVSGHRUTO