injection blow mold

injection blow mold for high-precision bottle forming

Injection blow molds are used for high-precision forming of hollow packaging such as bottles and jars, combining the injection-shaped preform and blow-expansion stages to achieve accurate neck threads along with uniform wall thickness and good surface quality.

Description

Injection Blow Mold Overview

Key features of injection blow molds:

  1. Forming precision: The injection stage shapes the bottle neck, threads, and cap/pump interface to ensure sealing and assembly accuracy; the blow stage ensures consistent wall thickness and a smooth appearance.
  2. Applicable materials: Commonly used for PP, PE, PETG, etc., with formulations and processes adjustable for medium, transparency, chemical resistance, or barrier needs.
  3. Thermal management: High thermal conductivity and fast temperature response help shorten cycles and stabilize dimensions and surface quality.
  4. Production efficiency: The mold is relatively lightweight for easy installation and maintenance; suitable for multi-cavity layouts to increase output per unit time.
  5. Service life and maintenance: Hard coatings or localized steel inserts can reinforce wear-prone areas; split-insert designs support convenient repair and replacement.
  6. Customization capability: Supports various bottle shapes (round, square, irregular), calibers, thread specifications, surface textures, and anti-counterfeiting engravings/LOGOs.
  7. Application scenarios: Cosmetic serum/lotion bottles, small-capacity pharmaceutical bottles, small food seasoning bottles, and portable spray bottles requiring high-precision necks and uniform wall thickness.