The basic process of thermoforming is: sheet clamping → heating → forming → cooling → demolding. Among them, molding is the most important and complicated. Most of the thermoforming is carried out on a molding machine, which varies greatly with the thermoforming method. Various molding machines do not all have to complete the above five processes, according to the actual production needs can be traded off. Usually, the maximum size of the clamping device and the maximum forming depth are the main parameters of the thermoforming machine.
①Clamping of material. Material clamping is a measure to prevent thermal shrinkage and self weight sagging when using plastic sheets (sheets) cut to a certain size for thermoforming, clamping around the sheet (sheets) to maintain the shape of the mold release.
②Heating. The heating system heats the plate (sheet) to the required temperature for molding at regular time and temperature, so that the material becomes highly elastic and ensures the smooth operation of the next molding process.
③Forming. The process of forming the heated and softened sheet into the required shape through the mold and related devices.
④Cooling system. The plastic products with a certain temperature of basic molding are cooled to below the heat deformation temperature, so that the products are cooled and cured, and the size is fixed and the products are not deformed after being released from the mold by the demolding device.
Latest blog posts
Custom molds injection molding
Custom molds injection molding is a manufacturing process that involves creating custom molds to produce plastic parts. Injection molding is a popular technique used in various industries such as...
Plastic injection molding companies
Plastic injection molding is a manufacturing process that involves injecting molten plastic into a mold to create a wide range of plastic products. From car parts to medical devices and household items, plastic injection molding is used to create a variet
PET Preform Injection Moulding Machine
PET preform injection molding is a manufacturing process that is used to create PET (polyethylene terephthalate) preforms that can be later blown into bottles, jars, and other containers. This process...
You may like
Explanation of the process flow of six kinds of recycled plastics
1. Recycled low-density polyethylene (LDPE) process,LDPE, the scientific name for high-pressure polyethylene, is generally referred to as plastic packaging film. Such as woven bag liner film, food packaging film...
Four kinds of mold surface treatment technology
In the work of the mold, in addition to the requirement that the substrate has a reasonable match of high enough strength and toughness, its surface properties are crucial to the working performance and service life of the mould.
30 common problems in the injection molding process and countermeasures
1.When the machine is first started, the product runs phi (flying edge), and after a period of production, the product lacks glue causes and solutions.
The melted glue in the...
Is there any relation between the gas generated during the injection molding process and the mold?
Reasons for gas generation during product manufacturing,1). The material in the feeding system is entrained with gas or the original air in the cavity, and the gas in the runner...