What is thermoformming?

Thermoformming is a production process that involves heating the material until it is flat, stretching over the mold, and then cooling to maintain the desired shape. In this way, a number of materials have been processed for centuries, including bones and shells, although thermo -forming is now used primarily for shaping plastic leaves or films. Examples of thermal products include blister packs for pills and individual portions of food, plastic magazines and even plastic pallets. This process involves heating the plastic leaf to the SAG point and then reduces it into a recessed mold. The air is removed by the vacuum and the leaf is worn onto the mold walls. The plastic is cooled if necessary and then cropped and removed. The device needed to form a direct vacuum is generally much cheaper than the device required for pressure or mechanical processing.

The more expmetod of thermo forming thermal forming used for parts that require accurate details is the same formation of mold . In thisThe process is an outstretched plastic leaf between two corresponding, heated forms. The molds are pressed together and the air bubbles are removed by vacuum through the holes in the mold.

When plastic leaves need to be formed into deep shapes that require even thickness, it is the preferred method of vacuum formation of the pressure bubble. In this thermal formation process, the regulated air pressure is exerted against the heated sheet to form a bubble. Once the bubble reaches the right height, the male plug-asist is running, forcing the bubble into a mold.

Trapped contact pressure thermoformming uses both vacuum and air pressure to enforce heated plastic into a mold. This process requires lower temperature, is faster and has a finer surface. Vacuum cracked processg is a slower and slightly more complicated process that can be used when the more critical thickness of the thickness is critical. INThis method is a heated plastic leaf placed through a vacuum box that sucks it into a concave shape. The vacuum box then releases the plastic and surprises back against the plus of the male plug.

Billow and compared to Die are two methods of thermo -forming that do not use a vacuum. When forming the counters, the heated plastic is attached to the wool, the chamber that blows the air, and the air pressure pushes the plastic against the mold. Compared formation of the matrix is ​​used to create parts with two halves to connect. The heated plastic foil is clamped together between two forms and no vacuum or air pressure is required.