Thermal molding is the process of heating plastic sheets to a a softened state, then using vacuum, pressure or mechanical forces to shape and mold to fit the mold surface, then cooling to form the final product. thermoforming technology has the advantages of low mold costs cost, high production efficiency and wide applicability. It is widely used in food packaging, medicine packaging, electronic product packaging, automobile parts and industrial trays.
However, not all plastic sheets are suitable for hot pressing. Different materials vary greatly in heat resistance, transparency, toughness, molding performance and cost. Therefore, the selection of suitable plate is the key to ensure the quality and efficiency of products.
- Pet sheets
PET (polyethylene terephthalate) is one of the most common materials in the thermoforming industry, especially in food packaging. PET plate has excellent transparency, high mechanical strength and good dimensional stability, can produce beautiful packaging products with strong protective properties.
Common applications include fruit boxes, fresh produce trays, cake boxes, salad containers and transparent display packaging. Because PET is recyclable, it is in line with current trends in eco-friendly packaging and is widely used in the global packaging market. PP Paper
PP (Polypropylene) sheets is famous for its excellent heat resistance and is an important material in food packaging and catering industries. Compared with PET, polypropylene is heat resistant and suitable for products that require microwave heating or hot filling.
Many disposable lunch boxes, takeout packaging boxes, food containers and medical packaging are made from PP materials. In addition, polypropylene has the advantages of light weight, chemical corrosion resistance and moderate cost, so the thermoforming market market demand is stable.
- PS table
PS (Polystyrene) sheets is one of the earliest materials used in the thermoforming industry because of its excellent forming performance and relatively low material cost. It has a high surface finish, convenient processing and is suitable for mass production of single-use packaging products.
PS materials are commonly used in products such as supermarket trays, disposable lunch boxes, cup lids and blister packaging. PS PS a competitive option for projects with limited budgets and less heat resistance requirements.
- PLA leaflet
With the increasing strictness of environmental protection regulations, PLA (Polylactic Acid) sheets has attracted more and more attention from the market. PLA (PLA) is a biobased material made from renewable resources such as corn starch and sugar cane.
PLA tablets are highly transparent and suitable for eco-friendly food packaging, disposable tableware and fresh produce packaging. For companies looking to reduce plastic pollution and meet green packaging requirements, PLA is a thermal a thermoforming material with great potential.
- PVC Plates
polyvinyl chloride (PVC) sheet metal has good transparency and size stability to meet diverse packaging needs. It has been widely used in blister packaging industry because of its good processing performance and wide molding temperature range.
PVC is commonly used in product packaging, hardware tool packaging, stationery packaging, display packaging. However, the usage PVC has declined in some markets due to increasingly stringent environmental requirements, but there is still some demand in the industrial packaging sector.
- ABS Form
(acrylonitrile-butadiene-styrene copolymer is a kind of high strength engineering plastic with excellent impact resistance and size stability. ABS is more suitable for industrial products and high-end applications than ordinary packaging materials.
ABS is often utilized in automotive interiors, electrical casings, equipment covers and industrial components. ABS is often ideal for applications that require higher mechanical strength and durability.
- HIPS Sheets
High Impact Polystyrene (HIPS) is a modified material from ordinary polystyrene (PS). Its impact resistance is obviously better than normal PS, while maintaining good processability and cost efficiency.
HIPS is widely used in refrigerator liners, advertising display board, industrial packaging tray, logistics turnover and other products. HIPS is highly cost-effective for products that require both cost control and intensity.
How to choose the Right Thermoforming Sheets?
In actual production, enterprises should consider multiple factors when selecting thermoforming sheets, including product application, performance requirement, processing process, cost budget, etc..
PET is usually a better option if the product is primarily used in food display packaging, PP has an advantage if heat resistance is required, PLA meets sustainability needs for companies pursuing environmentally friendly packaging, and industrial products and engineering applications are better suited to high-strength materials such as ABS or HIPS.
In addition, sheet thickness, transparency, impact resistance and subsequent printing and processing requirements must be taken into account to ensure that the final product meets market demands.
FAQ
Q1:Which material is better for food packaging, PET or PP?
A1:PET has high transparency, suitable for display packaging, polypropylene has better heat resistance, more suitable for microwaveable food containers and hot food packaging.
Q2:Are PLA plates fully biodegradable?
A2:PLA PLA) is a biodegradable substance, but usually requires rapid decomposition in an industrial compost environment.
Q3:Can hot press molding equipment process all kinds of plates?
A3:Most modern thermoforming equipment can process PET, PP, PS, PLA and other materials, but heating temperature and molding parameters need to be adjusted according to different materials.
Q4:Which thermoforming sheet has the lowest cost?
A4:In general, the cost of PS plates is relatively low, so they are widely used in the mass production of single-use packaging products.
Q5:What's the difference between ABS and HIPS?
A5:ABS has high strength and impact resistance for industrial parts; HIPS balances cost and toughness for industrial packaging and display products.
