Thermoforming is a term of recent origin, perhaps coming into common use in the early 1980s. Before that time, sellers of thermoformed plastic products referred to their industry as either vacuum- or pressure-forming operations. It made sense to combine the definitions of these processes since the only difference between the two is the degree of air pressure applied to form heated plastic. Thermoformed product buyers do not care which process is used as long as finished products are of high quality, delivered on time, and sold at a fair price.
چکیده فارسی
ترموفرمینگ اصطلاحی است که منشأ اخیر دارد و شاید در اوایل دهه 1980 رایج شد. قبل از آن زمان، فروشندگان محصولات پلاستیکی ترموفرم شده صنعت خود را به عنوان عملیات شکل دهی خلاء یا فشار می نامیدند. ترکیب تعاریف این فرآیندها منطقی است زیرا تنها تفاوت بین این دو درجه فشار هوای اعمال شده برای تشکیل پلاستیک گرم شده است. تا زمانی که محصولات نهایی کیفیت بالایی داشته باشند، به موقع تحویل داده شوند و با قیمت منصفانه فروخته شوند، خریداران محصول ترموفرم شده اهمیتی نمی دهند که از کدام فرآیند استفاده می شود.
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Design of the trim punch and die does not take place in a vacuum, shielded from outside forces. Mold layout has a major influence on both the cost and ease of fabricating a die. The customer’s thoughtful input and willingness to modify particular specifications when necessary can turn a complicated die project into a routine operation. Toolmaking facilities with modern precision equipment, skilled employees, and enlightened management ease the die-designer’s task. Trim-press manufacturers are an essential part of the die team because they supply the equipment to help maintain the die in its original precision condition, provide easy access to mount the tooling, and maintain a safe environment for machine operators. Finally, thermoforming shop personnel who have been properly instructed in maintenance and operation of the die ensure a long, productive life for the tool.
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