Preview · about 1 minute
Plant-floor overview. Unlock below for the full converter checklist.
Many plastics bond above the strength of the plastic. Polyethylene often does not. Weak assemblies here means tensile shear under 100 psi, or joints that fail on light impact or moisture. The common trait is low surface energy: PE, PP, PTFE, polyolefin/rubber composites, and TPOs. This page is product assembly, not film, packaging, or labeling.
Why they fight the adhesive:
- Low surface energy. The adhesive cannot spread.
- Low porosity. No mechanical lock.
- No polar groups. Carbon and hydrogen only. Most adhesives are polar.
- Weak boundary layer. Low-molecular-weight fractions and mold release sit on the face.
What's in this guide
- Pretreatment
- Primers and adhesives
Longer plant training (5–10 min)
Coming soon — downloadable deep-dive for the floor.
General plant guidance only — not a substitute for your process, SDS/TDS, or line trials. Call 800-249-0337 to match a grade.