- Save time: Short color change time（1-2hours）
- High quality: Smooth surface、Uniform wall thickness
- Cost saving: The scrap rate is only 30%, and the energy saving of the whole machine can reach 20%
- Personalization: View strip line, multi-layer, etc. Different output requirements can be achieved (40 to 200pcs/hr)
- Customizable product size requirements (3 to 60L).
how to make plastic pot
1. Material Preparation
Choose the Plastic Material: Most commonly used plastics in blow molding are polyethylene (PE) or polypropylene (PP) due to their strength, flexibility, and durability. These are supplied in pellet or granule form.
Melting: The plastic pellets are fed into a hopper, which directs them into an extruder. Inside the extruder, the pellets are heated to a molten state.
2. Extrusion of Parison
Forming the Parison: The molten plastic is extruded into a hollow tube called a parison. The parison is the precursor to the plastic pot and is essentially a molten tube of plastic that will be shaped in the mold.
3. Mold Clamping
Mold Setup: The mold consists of two halves that are shaped to form the final shape of the plastic pot. The mold halves close around the parison, trapping it inside.
4. Blowing
Air Injection: Once the mold is closed, compressed air is blown into the parison through a blow pin or air pin. This air pressure forces the molten plastic to expand and conform to the shape of the mold.
5. Cooling
Cooling the Mold: After the plastic pot is fully formed inside the mold, it needs to cool and solidify. This can be done using water or air cooling systems integrated into the mold.
Maintaining Shape: During the cooling process, the plastic hardens and retains the shape of the mold. The cooling time depends on the size and thickness of the pot.
6. Mold Opening and Ejection
Opening the Mold: Once the plastic pot has cooled and hardened, the mold halves open.
7. Trimming and Finishing
Trimming: After ejection, excess plastic (called flash) from the blow molding process may be attached to the edges of the pot. This excess material is trimmed off.
8. Quality Control and Packaging
Advantages of Blow Molding for Plastic Pots
Blow molding is ideal for producing large, lightweight pots at a lower cost compared to injection molding.
Simple Mold Design: The mold used in blow molding is relatively simpler and less expensive to produce.
Variety of Sizes: The process is suitable for creating a wide range of pot sizes, from small garden pots to large decorative containers.
Durability: Pots made through blow molding are generally durable and lightweight.
Equipment Used
what is plastic pot used for and size
Common Uses of Plastic Pots
Crop Cultivation: Larger plastic pots are used for growing fruits, vegetables, and herbs in controlled environments like greenhouses or urban farms. Tree Nurseries: In commercial nurseries, large plastic pots are used to grow and transport saplings and young trees.
Commercial Nurseries:
Plant Transport: Plastic pots are used to transport plants from nurseries to retail stores or customer locations.
Plant Sales: In retail garden centers, plants are often sold in plastic pots, providing a convenient and inexpensive packaging solution.
Landscaping:
Temporary Planting:
Landscapers use plastic pots for temporary plant arrangements or as part of larger landscape designs where permanent planting will follow.
Planter Liners: Some plastic pots are used as liners inside decorative pots or containers to protect the outer pot and make plant care easier.
Home Decor: Decorative plastic pots come in various designs, colors, and finishes and are used to enhance the aesthetics of gardens, patios, balconies, and indoor spaces.
Hydroponics and Aquaponics:
Growing Systems: Plastic pots are commonly used in soilless cultivation systems like hydroponics, where plants are grown in water-based solutions or inert growing media like coco coir.
Plastic Pot Sizes
Plastic pots come in a wide range of sizes to accommodate different types of plants and applications. The sizes are usually measured by diameter and height. Here are some common sizes:
Small Pots (Seedlings, Herbs, and Small Plants): Diameter: 2 to 4 inches (5 to 10 cm)
Height: 2 to 4 inches (5 to 10 cm)
Uses: Ideal for growing seedlings, herbs, succulents, and small decorative plants. These are often used for plant propagation or short-term growing.
Medium Pots (Flowers, Houseplants, and Vegetables):
Diameter: 6 to 10 inches (15 to 25 cm)
Height: 6 to 10 inches (15 to 25 cm)
Uses: Suitable for growing flowers, houseplants like ferns and peace lilies, and vegetables like tomatoes and peppers. These pots provide enough space for the root systems of medium-sized plants.
Large Pots (Shrubs, Small Trees, and Larger Plants):
Diameter: 12 to 20 inches (30 to 50 cm)
Height: 12 to 24 inches (30 to 60 cm)
Uses: Perfect for shrubs, larger houseplants, and small trees. These pots are also used for growing patio plants like roses and fruit-bearing trees in urban or confined spaces.
Extra Large Pots (Trees, Palms, and Large Outdoor Plants):
Diameter: 24 inches and above (60 cm and above)
Height: 24 inches and above (60 cm and above)
Uses: Designed for large trees, palms, and ornamental plants used in landscaping. These pots provide ample space for large root systems and are often used for commercial or decorative purposes in gardens and public spaces.
Contact Our Experts
TONGDA Clients
Successfully supplied Jerrycan blow molding machine lines to many countries around the world
- Client Location: MALI
- Model: HTSII 5L/1-P
- Output: 230 Pcs/hr
- Client Location: Burkina Faso
- Model: HTSII 5L/1-2P
- Output: 250 Pcs/hr
- Client Location: Côte d'Ivoire
- Model: HTS 5L/1-P
- Output: 130Pcs/hr
Trusted By
Successfully supplied Jerrycan blow molding machine lines to many countries around the world
Machine Choice
HTSⅡ-5L Blow Molding Machine
HTⅡ-18L Blow Molding Machine
