How Does A Blow Molding Machine Produce 60L Tool Cases
Producing a large plastic tool case requires stable plasticizing, sufficient parison volume, controlled wall thickness, reliable mold clamping, and suitable cooling. For 60L-class products, these stages need to work together because the case may include broad panels, corners, handles, hinges, and other structural areas.
Kingplas Machinery uses the HC90 accumulator-type extrusion blow molding machine for large hollow plastic products. With a maximum product volume of 60L and an HDPE plasticizing capacity of 150 kg/h, the machine can be configured for tool case production.
Stable Plasticizing Prepares The HDPE:
A large tool case requires more material in each molding cycle than a small hollow product. The extrusion system therefore needs to maintain stable HDPE plasticizing while supplying enough melt for the parison.
The HC90 blow molding machine for tool case uses a 90 mm screw with a 25:1 L/D ratio and provides an HDPE plasticizing capacity of 150 kg/h.
Stable melt conditions help maintain consistent parison formation before the material enters the mold.
The Accumulator Forms A Larger Parison:
The HC90 uses a 6L accumulator to prepare molten material before it is discharged through the die head. This structure helps form the larger parison required for a 60L-class hollow product.
During production, several factors should be coordinated:
- Parison length and diameter
- Material temperature
- Product weight
- Wall thickness distribution
- Mold dimensions
The settings depend on the actual shape and dimensions of the tool case rather than product volume alone.
Wall Thickness Control Supports Complex Areas:
Different parts of a tool case do not stretch equally during blowing. Corners, handles, hinge areas, and deep sections may require different material distribution from large flat panels.
Controlling the parison and molding conditions helps reduce excessive thinning in highly stretched areas while avoiding unnecessary material accumulation elsewhere.
This is particularly important for large tool cases where both structural areas and broad surfaces are formed in the same molding cycle.
The Clamping System Matches Large Molds:
The mold must fit within the available platen area and opening range while receiving sufficient clamping force during blowing.
Key HC90 parameters include:
| Parameter | Specification |
|---|---|
| Model | HC90 blow molding machine |
| Maximum product volume | 60L |
| Screw diameter | 90 mm |
| HDPE plasticizing capacity | 150 kg/h |
| Mold platen size | 900 × 800 mm |
| Clamping force | 300 kN |
| Accumulator volume | 6L |
| Extrusion motor power | 45 kW |
These specifications provide a reference for machine selection, but the actual mold dimensions, product weight, and tool case geometry still need to be confirmed before production.
Blowing And Cooling Complete The Tool Case:
After the parison enters the molding position, the mold closes and compressed air expands the HDPE against the mold cavity. The material forms the shell, corners, edges, and other molded features of the tool case.
Cooling then removes heat until the product has sufficient dimensional stability for mold opening and removal.
The basic production sequence is:
HDPE Plasticizing → Accumulation → Parison Formation → Mold Closing → Blowing → Cooling → Product Removal
Kingplas accumulator type extrusion blow molding machines can be configured according to different hollow product requirements. For tool cases, product dimensions, material, weight, wall thickness, mold size, and required output should be considered together when determining the final setup.
FAQ:
Q1: What is the maximum product volume of the HC90?
A: The maximum product volume is 60L.
Q2: Can the HC90 process HDPE tool cases?
A: Yes. Its HDPE plasticizing capacity is 150 kg/h, with a 90 mm screw.
Q3: Why is wall thickness control important for tool cases?
A: Different areas stretch differently during blowing, so suitable material distribution helps maintain the required wall thickness.
Q4: Is the 60L rating enough to select the machine?
A: No. However, you should also consider product dimensions, weight, mold size, wall thickness, and structural design when selecting the machine.
Why Choose Kingplas Machinery?
Has 30 years blow molding experience. Our blow molding machine portfolio is designed to handle a wide range of thermoplastic materials, including HDPE, PP, PE, PVC, PC, and PETG, for containers ranging from 10ml to 1250L.
- Automatic Extrusion Blow Molding Machines: High-speed continuous extrusion systems (Single/Double Station) for cosmetics, lubricants, and household chemicals.
- Accumulator Head Blow Molding Machine: Robust solutions for large-scale industrial parts, such as 200L drums, IBC tanks, and automotive components.
- Multi-Layer Co-Extrusion Technology: Advanced 2-to-6 layer systems that provide superior barrier properties for agrochemical and fuel tank applications.
- Turnkey Solutions: Integrated production lines including precision mold design and auxiliary equipment.
Contact KingPlas:
Email: [email protected]
Tel/Whatsapp: +86 13862001031
