PLA
The best adhesive for PLA is typically Heat-Resistant Epoxy, with good bond strength. As a plastic material, PLA has unique bonding characteristics that require specific adhesive selection. Common applications include 3d-printing,packaging,disposables.
Bonding PLA requires understanding its unique surface properties and chemical characteristics. As a plastic material, PLA presents specific challenges that can be overcome with the right adhesive selection and proper surface preparation techniques. This comprehensive guide provides expert recommendations, bond strength data, and step-by-step instructions to achieve strong, durable bonds with PLA.
Material Properties & Characteristics
PLA exhibits medium surface energy, which allows for good adhesion when proper surface preparation is performed. The none nature of PLA presents bonding considerations that depend on surface preparation and adhesive selection. As a rigid material, PLA benefits from rigid adhesives that provide maximum structural strength and dimensional stability. The low chemical resistance of PLA requires adhesives compatible with its chemical composition and environmental exposure conditions. Understanding these fundamental properties is essential for selecting the appropriate adhesive and surface preparation method.
Surface Preparation Best Practices
Achieving strong, durable bonds with PLA depends heavily on proper surface preparation. Begin by cleaning all bonding surfaces with appropriate cleaners to remove dirt, oils, and surface contaminants. Ensure surfaces are at room temperature (15-25°C or 60-80°F) for optimal bonding conditions. Temperature extremes can affect adhesive flow, wetting, and cure times. Apply adhesive within minutes of surface preparation to prevent recontamination from dust, moisture, or oils. Proper surface preparation significantly improves bond strength, durability, and long-term performance.
Surface Preparation Guide
Proper surface preparation is critical for achieving strong, durable bonds with PLA. Follow these steps:
- Clean with soap and water or degreaser to remove dirt and oils
- Dry thoroughly before applying adhesive
- Ensure surfaces are at room temperature (60-80°F) for optimal bonding
- Apply adhesive within minutes of surface preparation for best results
Basic Information
Category
plastic
Surface Energy
medium
Surface Type
non-porous
Flexibility
rigid
Porosity
none
Chemical Resistance
low
Chemical Information
CAS Number
9051-89-2
Trade Names
NatureWorks
Aliases
polylactic acid,polylactide
Chemical Composition
- polylactic acid (100%)
Common Uses
3d-printing,packaging,disposables
