Some products punish a weak bottle: solvents creep through a thin wall, aroma escapes a cosmetic pack, and recycled content can spoil the look of a clear container. The MP55D four layer PETG blow molding machine confronts all three at once with a four-layer co-extrusion head that separates the job of each layer - outer gloss, structural body, recycled core and an inner barrier - into one merged parison.
By giving the barrier its own dedicated layer, a four layer PETG blow molding equipment holds solvent and oxygen where they belong while still presenting a clean, printable outer skin. For chemical and cosmetic brands, that separation turns one expensive resin into a thin, efficient film instead of a solid wall of cost.
Key Features
- Four-Layer Die Head: separate outer, body, core and barrier layers in one parison.
- Dedicated Barrier Layer: holds oxygen and solvents where a single wall cannot.
- Recycled Core: places regrind in the middle without harming the outer surface.
- Clean Outer Skin: keeps colour, gloss and printability on the visible face.
- Even Layer Balance: consistent thickness around the full circumference.
- Multi-Cavity Capable: runs one to six cavities with layer balance held.
Technical Specifications
| Parameter | Specification |
|---|
| Model | MP55D four layer extrusion blow molder |
| Layer Structure | 4-layer co-extrusion |
| Die Head | Multi-cavity, self-manufactured |
| Barrier Resin Support | EVOH and similar |
| Container Range | 5 ml to 1 L |
| Cavity Options | 1, 2, 3, 4 or 6 fold |
| Clamping Force | 30 kN |
| Applicable Materials | PETG, HDPE, PP, EVOH, PVC, PC, PA |
| Screw Diameter | 55 mm, L/D 24 |
| Total Machine Power | 33.34 kW |
| Air Working Pressure | 0.6 - 0.8 MPa |
| Machine Size (LxWxH) | 2.87 x 2.14 x 2.35 m |
Applications
- Chemical and agrochemical bottles needing solvent-resistance
- Cosmetic and personal-care packs where aroma retention matters
- Lubricant and additive bottles with recycled content in the core
- Food-oil packaging requiring an oxygen barrier layer
A four-layer structure is about placing the right material where it earns its keep. The outer skin carries brand appearance, the core can take regrind, and the inner barrier protects the contents. Balanced around the whole bottle, that arrangement lets a four layer PETG blow molding machine meet a demanding specification without pricing the pack out of its market.
Packaging and Quality Assurance
The four-layer head is assembled, leak-tested and verified for layer distribution on a sample parison before shipment. Machines ship on wooden pallets with optional crating plus head assembly drawings and a layer-balance guide. MEPER assists with layer ratios so the four layer PETG blow molding equipment meets both the barrier target and the unit cost.
Frequently Asked Questions
Q: What does the fourth layer add to a PETG blow molding equipment?
A: A dedicated barrier layer. With four layers you can separate appearance, structure, recycled content and barrier performance, so a solvent or oxygen barrier sits where it is needed while the outer skin stays clean. That lets a four layer PETG blow molding machine meet strict specs at a controlled material cost.
Q: Can a four-layer bottle include recycled resin?
A: Yes. The core layer is the natural place for regrind or recycled resin, because it is hidden between the outer skin and the structural body. That is a common way to raise recycled content without changing how the bottle looks.
Q: Is multi-cavity output still balanced with four layers?
A: Yes. MEPER assembles and leak-tests the head as one unit and checks layer distribution on a sample parison, so even a six-cavity four layer PETG blow molding equipment keeps its layers evenly spread.
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