Guide to Vacuum Buttons and Container Sealing Study Guide
Learn about the critical role of vacuum buttons in ensuring hermetic seals in steel containers. This guide covers their design, the importance of minimum vacuum requirements, and how closure size impacts vacuum capacity. Includes a worked example for selecting the appropriate closure size based on required vacuum levels, essential for quality control and packaging engineers in the food safety and shelf-life industry.
Save this study guide to your study set
Your learning path
Types and Functionality of Closures
Variety of Pressure Sensitive Closures
Vacuum requirements for buttons range from 18 to 20 inches of mercury to ensure the capper delivers enough vacuum into the package.
- vacuum requirements
- buttons
- capper
- loss of seal
- headspace
- GPI finishes
Understanding Button Closures and Vacuum Sealing in Packaging
Read · 3 min
- Import & open
Flashcards
Import to get started
- Import & open
Quiz
Import to get started
- Import & open
Practice test
Import to get started
- Import & open
Listen
Import to get started
- Import & open
Tutor Me
Import to get started
- Import & open
Watch
Import to get started
- Import & open
Chat
Import to get started
- Import & open
Arcade
Import to get started
Steel Closures for PET Bottles
Steel closures for PET bottles range from 63 to 82 millimeters and feature more lugs to spread force because PET deforms during processing.
- Steel closures
- PET bottles
- Lug count
- Force distribution
- PET deformation
Steel Lug and Glass Neck Finishes
Glass Packaging Institute standards manage finished drawings for steel closures and glass finishes to ensure closure suppliers can be interchanged.
- Glass Packaging Institute
- finish standards
- finished drawings
- closure suppliers
- finish
- threads
- lugs
- top ceiling surface
- TSS
- mold seam
- blow mold
PT Closures and Plasticol Processing
Plasticol wraps around the outside of a PT closure and softens during a retort process to form thread impressions.
- PT closures
- Plasticol
- Retort process
- Thread impressions
- Lug closure
P-T Section and Functionality
A cross-section of a P-T closure illustrates how glass, gasket, metal, and container body layers function to create a seal.
- P-T closure
- Cross-section of closure
- Glass
- Gasket
- Metal
- Container Body
- Sealing
Steel Closure Components and Vacuum Requirements
Variety of P-T Closures
Minimum vacuum requirements for vacuum buttons include closure size and highest vacuum.
- Minimum vacuum requirements
- Vacuum buttons
- Closure Size
- Highest Vacuum
Understanding Vacuum Buttons in Steel Container Manufacturing
Read · 4 min
- Import & open
Flashcards
Import to get started
- Import & open
Quiz
Import to get started
- Import & open
Practice test
Import to get started
- Import & open
Listen
Import to get started
- Import & open
Tutor Me
Import to get started
- Import & open
Watch
Import to get started
- Import & open
Chat
Import to get started
- Import & open
Arcade
Import to get started
Introduction to Steel Closure Components
This lesson covers steel closure components including lugs, plastisol gasket material, indicating buttons, and skirt heights.
- lugs
- plastisol gasket material
- tamper indicating button
- skirt
- regular height closures
- deep height closures
- closure sizes
Elevation and Temperature Effects on Vacuum
This video explains how elevation and temperature affect the vacuum for steel closures measured in inches of mercury.
- vacuum
- inches of mercury
- elevation
- temperature
- steel closures
Temperature Effects on Vacuum Requirements
Heat in the package changes vacuum requirements.
- temperature
- heat in the package
- vacuum requirements
Steel Closures Vacuum and Button Temper
Temper indication ensures buttons stay down despite losing vacuum when increasing elevation.
- temper indication
- vacuum loss
- elevation increase
- button movement
Make it your own.
Keep these readings and topics in a new study set, or add them to one you already use.