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A. Process integration, high production efficiency
One-time molding, reducing processes: The injection blow molding
machine integrates the two independent processes of traditional
injection molding (preform making) and blow molding (molding) on
the same equipment, without manual or mechanical transfer of
preforms, to achieve "injection molding - blow molding" continuous
automatic production, greatly shortening the production cycle.
High degree of automation: Equipped with automatic feeding,
automatic demoulding, automatic detection and other systems, it can
realize unmanned continuous production, and the hourly output of a
single device can reach hundreds to thousands of pieces (depending
on product specifications), which is suitable for large-scale mass
production.
B. High product precision and stable quality
Good dimensional consistency: The injection molding stage uses
precision molds and pressure control to ensure that the wall
thickness and weight errors of the preform (preform) are extremely
small; the blow molding stage adopts a closed-loop control system
to ensure the dimensional accuracy of the finished product (such as
bottle mouth thread, bottle body verticality, etc.), especially
suitable for products with high sealing performance requirements
(such as medicine bottles, cosmetic bottles).
No flash, no seams: Compared with traditional blow molding (such as
extrusion blow molding), injection blow molded products do not
require subsequent trimming, the bottle body has no parting line,
the surface is smooth, the appearance quality is better, and the
scrap rate is reduced.
High material utilization rate: The raw material measurement is
accurate during injection molding, there is no excess material
consumption in the blow molding stage, and there is less material
waste. It is especially suitable for the molding of expensive raw
materials (such as engineering plastics and medical-grade
plastics).
C. Wide range of applicable materials and strong product diversity
Compatible with a variety of plastics: It can process a variety of
thermoplastics such as polyethylene (PE), polypropylene (PP),
polyvinyl chloride (PVC), polyester (PET), polystyrene (PS), etc.,
especially good at processing crystalline plastics (such as PP),
and can achieve products of different hardness and transparency
through process adjustment.
Support multi-specification products: It can produce hollow
products ranging from a few milliliters (such as oral liquid
bottles) to several liters (such as food packaging bottles), with
various bottle mouth specifications (such as threaded mouth, wide
mouth, special-shaped mouth), meeting the packaging needs of
different industries such as medicine, food, cosmetics, and
chemicals.
D. Low energy consumption and good environmental protection
High energy utilization rate: The integrated process reduces the
energy loss between equipment, and some advanced injection blow
molding machines are driven by servo motors, which can reduce
energy consumption by 20%-30% compared with traditional hydraulic
drives.
Reduce pollution risk: The closed production process reduces the
chance of raw materials coming into contact with the outside world,
which is especially suitable for the clean production of
pharmaceutical and food-grade products (can be used in conjunction
with dust-free workshops) and complies with industry standards such
as GMP.
E. Equipment investment and maintenance characteristics
High initial investment: The injection blow molding machine has a
complex structure (injection molding and blow molding systems need
to be integrated), and the cost of precision molds is also high,
which is suitable for medium and large-scale production
enterprises.
Strong professionalism in operation and maintenance: Operators are
required to master the coordinated adjustment of injection molding
parameters (temperature, pressure, holding time) and blow molding
parameters (blowing pressure, time, cooling control), and equipment
maintenance needs to focus on mold accuracy, hydraulic/pneumatic
system stability, etc.