Thick sheet blister manufacturers talk to you about thick sheet blister molding technology is how? demoulding deformation how to deal?
Time: 2023-05-31
Thick sheet blister manufacturers said that thick sheet blister molding technology, that is, plastic sheet (plate) thermoforming processing technology, is one of the industrial technologies for plastic secondary processing.
Thick sheet plastic manufacturers said that thick sheet plastic molding technology is different from one-time processing technology such as injection molding and extrusion. It is not a heating molding of plastic resin or particles or a continuous molding with the same section as the mold. Instead of cutting off part of the plastic material through mechanical processing means such as machine tools and cutting tools to obtain the required shape and size. Instead, the plastic sheet (plate) material is heated, and the sheet (plate) material is deformed through a mold, vacuum or pressure to achieve the required shape and size, supplemented by a supporting process to achieve the application purpose.
Thick sheet plastic manufacturers said that there are two types of thick sheet plastic molding machines: automatic molding machines and manual molding machines. Suitable for mass production, it can realize the whole process automation from plate transportation to plate heating plastic processing, cooling, demoulding and final product delivery. The automatic molding machine has high efficiency, stable product quality and low labor intensity, but the product size is limited by the machine. When the size of the mold is smaller than the size specified by the machine, an additional frame with the same inner hole of the machine frame, the outer size of the mold and the outer edge size should be added, otherwise the residual material of the plate will be increased. The mold used by the automatic forming machine is mainly steel film.
The thick sheet blister manufacturer said that the manual molding method is relatively simple, and the main equipment is the plate heating and drying chamber, compressor, press frame and mold. After the plate is heated, the plate is taken out by hand and placed on the mold, the press frame clamps the edge of the mold, and then performs blister molding. The size of the mold is not limited, as long as there is a large enough drying room. This molding method is generally used for passenger cars with a length of more than 7 meters. Artificial molding method is inefficient, affected by human factors, generally do not use steel film, the vast majority of plastic using pure aluminum mold. Thick plastic products can be divided into thermosetting products and thermoplastic products. The former can not be reshaped to use, the latter can be repeated production. These two different structures exhibit two opposite properties. Due to the existence of independent molecules, linear polymers have the characteristics of elasticity, plasticity, solubility in solvents, thermal melting, hardness and brittleness. Since there is no independent macromolecule, the bulk polymer has no elasticity and plasticity, cannot be dissolved and melted, can only swell, has high hardness and brittleness. Thick plastic products have two kinds of polymers, such as thermoplastic plastic products made of linear polymer and thermosetting plastic products made of bulk polymer.
The thick sheet blister manufacturer said that the production quality of thick plastic sheet products is inseparable from mold production in addition to qualified materials. It is necessary to successfully complete the whole process from heating, blister, cooling, and demoulding to ensure product quality, especially smooth demoulding, so as not to affect the finished product. In the blister process, if the pretreatment work is not done well, the thick blister product will also cause the product to deform at the moment of demoulding, and the deformed thick blister product will inevitably affect the product quality. In order to avoid the deformation of the thick sheet during the stripping process, it is necessary to take corresponding measures to solve this problem.
1: The user is required to check the temperature of the cooling water and adjust the water volume of the nozzle to reach the specified range.
Two: need to adjust the wind direction of each position, for the production of thick sheet blister to find the right pressure.
Three: When demoulding, use the pressure of the vibration upper mold to force the smooth demoulding; if the air volume at the bottom can be appropriately increased, it will also help ensure the quality of thick plastic products.
Four: According to the characteristics of each thick plastic sheet product, selecting the appropriate plastic sheet processing equipment can not only improve the product qualification rate, but also improve production efficiency and reduce costs. According to the actual production needs, choose automatic or manual blister equipment, at the same time with the corresponding number of operators, intact large-scale blister operation.
Key words: Thick sheet blister manufacturers
Yangzhou Tuobo Plastic Industry Co., Ltd
E-mail:tuoboxisu@126.com
Address: Dinghuo Town, Jiangdu District, Yangzhou City
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