If you’re curious about how long your rubber mold can be stored in a “mold library” (a term used to refer to mold storage life), this guide will give you the information you need. Knowing the shelf life of your rubber mold when it’s stored and waiting to be used is key to managing your molds efficiently. Different types of mold rubbers have varying durability, so let’s look at the expected storage life for several common mold materials.
Factors Affecting Storage Life
Before we discuss the specific storage durations, it’s important to consider factors that influence the longevity of your rubber molds. While these may not be the same for every mold, they can provide general guidance for proper storage:
- Storage Conditions: The environment plays a crucial role in maintaining the integrity of rubber molds. Store your molds in a clean, dry area, away from extreme heat or sunlight, which can cause degradation over time.
- Mold Design: The complexity and detail of the mold can impact its overall lifespan. Molds with delicate features or thin sections might have a shorter storage life compared to thicker, sturdier designs.
- Mold Material: Different mold rubbers have unique properties that affect their longevity. Understanding these properties will help you choose the best material for your needs.
Now, let’s break down the typical storage life you can expect from various mold rubbers:
- Urethane (Polyether-based): 25+ years
- Urethane (Polyester-based): 1-7 years (depending on moisture exposure)
- Silicone (Tin-based, Economy, e.g., RTV-6 series): 1 year
- Silicone (Tin-based, High-strength, e.g., T-Flow, T-Pro): 5-7 years
- Silicone (Platinum-based, e.g., P-series, VB, HC): 30+ years
- Latex: 10+ years (with proper care)
- Vinyl: 5+ years (with proper care)