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What are the advantages and disadvantages of large, thick-sheet thermoforming?

Published time:

2022-10-19

  Automated thermoforming of large, thick sheets is particularly suitable for mass production. The entire process, from raw materials to finished products, is automated, resulting in high efficiency and stable quality. However, the size of the products is limited by the machine, only allowing for the production of products within a specified size range. Let's explore the advantages and disadvantages below. Large thick sheet thermoforming What are the advantages and disadvantages?

  

 Large thick sheet thermoforming


  Advantages of large thick sheet thermoforming:

  1. Large thick sheet thermoforming The process is cost-effective. In the packaging manufacturing industry, unless corrugated cardboard is used as the packaging material, thick-sheet blister processing technology is unmatched by other processing methods. The main advantage of thick-sheet blister thermoforming is its engineering economy. Compound sheets, foamed sheets, and printed sheets can be formed by changing the mold instead of changing the thermoforming machinery for thick sheets. Products with thin walls can be processed using thick sheets with high melt viscosity, while injection molding of products with the same wall thickness requires particles with low melt viscosity. For small quantities of molded products, favorable mold costs are another advantage of thick-sheet blister processing; however, for large quantities of molded products, the products can achieve very thin wall thicknesses, and the high production ratio of thick-sheet thermoforming is very advantageous.

  2. Material Selection for Large Thick Sheet Thermoforming: The large thick sheet thermoforming process can produce products as small as packaging materials for tablets or watch batteries, and also very large products, such as garden ponds 3-5m long. The thickness of the forming material can range from 0.05 to 15mm, and for foamed materials, it can be up to 60mm. Any thermoplastic or material with similar properties can be thermoformed.

  3. Scrap Wood Recycling: During the production of large thick sheet thermoforming, sheet cutting is required, producing scrap. After crushing, this scrap can be mixed with raw materials and reprocessed into sheets. In recent years, the recycling of scrap in large thick sheet thermoforming has become increasingly important. Currently, scrap is mixed with virgin materials after crushing for recycling, forming a closed-loop process. The recycling of discarded plastic molded products, such as packaging materials and even engineering products, is feasible under many conditions, but some still require development. Currently, the recycling mainly involves several chemical and energy materials. To improve recycling, efforts must be made to improve the ecological and economic aspects of the processing process.

  Disadvantages of large thick sheet thermoforming:

  1. In thermoforming, only one surface contacts the thermoforming mold; therefore, only one surface matches the mold's geometry. The contour of the other surface of the product needs to be stretched to obtain.

  2. High cost Large thick sheet thermoforming The materials used in processing are sheets with a thickness of 0.05-15mm, which are semi-finished products made from granules or powders. Therefore, compared to injection molding, the raw materials for large thick sheet thermoforming require additional costs.

  The above introduces the advantages and disadvantages of large thick sheet thermoforming. For more information, please contact us!


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