Thick-sheet thermoforming The product’s raw material is solely plastic sheeting, with a typical thickness not exceeding 1.5 mm. Commonly used materials include PVC, PET, PP, and PS, as well as derivative products such as flocked sheets, gold‑plated sheets, and antistatic sheets.

　　PVC: A commonly used thermoforming material, it is soft, highly resilient, and easily moldable, available in both transparent and a wide range of colors. Transparent PVC is typically used for packaging electronic products, cosmetics, toys, and gifts.

　　PET (A-PET): A rigid, tough, high-strength sheet with a glossy surface, environmentally friendly, non-toxic, transparent, and available in multiple colors. Its drawback is that PET is difficult to bond using high-frequency heat sealing, and it is significantly more expensive than PVC. This material is often chosen by customers who prioritize advanced product features and environmental sustainability as a substitute for PVC. Food‑grade cling film.

　　P.S.: It has low density (light weight), is environmentally friendly and non‑toxic, exhibits good moldability, but poor toughness and high brittleness. It cannot be used to produce transparent materials and is suitable only for base‑layer thermoforming. Due to its tendency to crack, this type of blister packaging is not recommended for recycling.

　　PP: The material is exceptionally soft, highly resilient, environmentally friendly and non‑toxic, and resistant to high temperatures. It is commonly used for packaging food‑service utensils and other heat‑resistant products; however, it has poor moldability, is difficult to process, exhibits low surface gloss, and tends to lighten in color during manufacturing.

　　PET-G: Its physical properties are similar to those of A-PET, but it can be heat‑sealed using high‑frequency sealing. It is 80% more expensive than A-PET.

　　I. Thick-sheet thermoforming Mold Selection

　　Plaster: It is carved and shaped in a semi‑wet state, then allowed to dry. This method is low‑cost and easy to modify, but it lacks high precision, yields a rough surface, and is brittle and not very durable. Consequently, it is often used for prototyping, creating patterns for electroplated copper molds, or producing blister‑mold tools that do not require small‑batch production.

　　Aluminum molds: Aluminum ingots are machined using lathes, milling machines, CNC equipment, and other tools. They offer high precision, a smooth surface finish, and long-lasting durability, but they are very expensive. They are typically used for thermoformed products that demand even higher precision than copper molds.

　　Electroplated copper: After the sample is fabricated, an additional layer of copper is electroplated onto it, resulting in an electroplated copper mold. With its smooth, durable surface and low cost, this type of mold is widely used for producing thick‑walled thermoformed parts.

　　II. Advantages of Thick-Section Thermoforming Technology

　　1. Thick-sheet thermoforming products have a wide range of applications, including PC lamp shades and mechanical panels, housings for instruments and equipment, inner liners and outer casings for household appliances, automotive interiors, housings for sports equipment, and sanitary products—all of which can be manufactured using the thick-sheet thermoforming process.

　　2. Its advantage is low mold‑making costs, resulting in minimal investment and reduced expenses.

　　3. Thick-sheet thermoforming technology can process sheets up to 12 mm thick or even thicker, with a processing area exceeding 10 m², making it suitable for manufacturing products with larger dimensions and greater thicknesses.

　　4. In today’s era of rapid growth in the plastics industry, the application scope of thick‑film thermoforming is continually expanding. Meanwhile, with the ongoing introduction and refinement of domestic thick‑film thermoforming technology, its energy efficiency, power generation capabilities, and resistance to deformation have all improved significantly compared with earlier models.