Multi-Layer Extrusion Blow Molding Machine Three Layer Die Head MP55D

Single-layer bottles have a limit: one polymer must deliver gloss, strength and barrier at the same time, and usually it cannot. The MP55D multi-layer extrusion blow molding machine solves that with a three-layer co-extrusion die head, letting you place a recycled or regrind core between two virgin skins, or sandwich a barrier resin to slow oxygen and solvent loss. Each layer is fed by its own extruder and merged into one parison before the mould closes.

Because the machine was built around a multi-cavity, multi-layer head from the start, the layers stay even around the full circumference of the bottle. That consistency is what separates a genuine multi-layer extrusion blow molding machine from a single-layer unit pushed beyond its design.

• Three-Layer Die Head: merges skin, core and inner layers into one clean parison.
• Multi-Cavity Compatible: runs one to six cavities while holding layer balance.
• Recycled Core Option: hides regrind or recycled resin between virgin skins.
• Barrier Sandwiches: supports EVOH and similar resins for low oxygen transmission.
• Even Layer Distribution: consistent wall and layer thickness around the circumference.
• Self-Manufactured Heads: MEPER builds its own extrusion heads for tight tolerances.

• Lubricant and additive bottles that need a glossy outer skin with a recycled core
• Cosmetic and personal-care packs blending colour with barrier performance
• Chemical and agrochemical bottles requiring solvent resistance
• Food-oil packaging where extended shelf life matters

A three-layer structure also lets a brand use a cost-effective core material without changing the feel or printability of the outer surface. That freedom to mix materials is the main reason a multi-layer extrusion blow molding machine stays competitive on both cost and quality at once.

Die heads are assembled and leak-tested as a unit, and each multi-layer head is checked for layer distribution on a sample parison before shipment. Machines load onto wooden pallets with optional crating and ship with head assembly drawings and a layer-tuning guide. MEPER helps buyers plan layer ratios so the multi-layer PETG blow molding equipment meets both the barrier target and the unit cost.

Q: How does the multi-layer blow molding machine save cost?

A: The core layer can carry regrind or a lower-cost resin while the two outer skins keep the gloss, colour and food-contact properties buyers expect. You get the look of a solid bottle at a lower average material cost, and the multi-layer extrusion blow molding machine keeps each layer balanced around the whole bottle.

Q: Can I run EVOH barrier layers?

A: Yes. The three-layer head supports barrier sandwiches such as EVOH between two structural skins, which slows oxygen and solvent transmission for products that need a longer shelf life.

Q: Is a multi-cavity head still accurate with three layers?

A: MEPER assembles and leak-tests each head as one unit and verifies layer distribution on a sample parison before shipment, so multi-cavity output keeps even skins and core.