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Unscrewing Closures
YOU ARE HERE: Home / Custom Caps & Closure Molds / Unscrewing Closures

Unscrewing Closures

Injection Mold | Unscrewing Closure Molds | StackTeck

Unscrewing Closure Molds are designed for caps and closures with detailed threads which cannot be ejected using bump-off methods. When these parts are molded they must be unscrewed from the mold to avoid thread damage. StackTeck has developed proven designs for unscrewing molds with optimized cooling allowing short cycle times.

StackTeck has built a large number of unscrewing closure molds for high cavitations for a design that is decades old, including stack molds of up to 128 cavities. Our design is well proven to have excellent cooling while maintaining a good water seal on the rotating cores.

We have worked with a range of approaches including rotating stipper rings instead of cores on large mold programs and we have innovative patented approaches to actuate core rotation or to rotate cavities instead of cores. All of these patented alternatives for rotation can be custom tailored within the range of technologies that StackTeck offers to a particular application.

Injection Molded Part | Unscrewing Closure Molds | Molded on StackTeck Mold


 

Benchmark Solutions:

  • Single-face Molds
  • Stack Molds
  • Mold Programs
  • System Integration
  • Part Design
  • Prototyping

Injection Molded Part | Unscrewing Closures | Molded on StackTeck Mold

 


 

Unscrewing Closures – Video

Servo Unscrewing Cap Mold Technology featured at K Show 2016
To learn more about Servo Driven Technology for molds, click here.

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Benchmark Testimonials

Mold quality, materials, service and delivery time from StackTeck are exceptional.
Monterrey, Mexico

"StackTeck has been our partner since 1999. Mold quality, materials, service and delivery time from StackTeck are exceptional." Continue Reading

IEMCO Logo
Contenedores IEM, S.A. de C.V. (IEMCO)
Highly Recommend StackTeck in Capability, Quality, Support, and Customer Relations
Worldwide

Working with Stackteck has provided me with an assurance of working with a team of thorough professionals. StackTeck's engineering strength combined with excellent customer care are among the many characteristics that have helped me with various projects. StackTeck handles and supports every project(small or large) with the same level of enthusiasm. Continue Reading

Senior Program Manager
Global Leader in Plastic Packaging Solutions
Integrity and Professionalism throughout StackTeck
Latin America

"With 25 years experience in this industry, I recommend StackTeck for the quality of its molds and the professionalism of its technical, accounting and engineering staff." Continue Reading

Sr. Jose Rojas Asken
Plant Manager
High-quality, efficient, low-cost Solution
Mexico

"The 5 piece collapsing core technology enabled us to produce low weight parts with higher cavitation moulds, all with a 10 second cycle time ..." Continue Reading

Industrias FC, S.A de C.V
Surpassed our Technical and Service Expectations
Brazil

"Highly recommend StackTeck as a supplier of molds and post-sale mold service as they are a company that is serious, responsible, organized, and passionate about customer service and the execution of successful projects." Continue Reading

Antonio Ruesga Estrella
Líder de proyecto – INOVA PHARMAPLASTICS S.A. de C.V.

Beverage Caps

  • Carbonated Soft Drinks (CSD) Molds
  • Mineral Water Closures
  • Hot Fill Closures
  • Other Caps & Closure Molds

Custom Closures

  • Unscrewing Closures
  • Collapsing Core Closures
  • Bump-off Caps & Closure Molds
  • Flip-Top Caps & Closures
  • Personal Care
  • Multi-Material Closures

PET Preforms

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Thinwall Packaging

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  • Ultra-Light-Weight Containers / Lids
  • Horticultural

Medical Molds

  • Medicine Cups
  • Labware / Petridishes
  • Pharmaceutical
  • Hospital Thinwall

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