- Insight
Clarification of Aflex Hose non-adhesive bonded hose construction
Background - Change notification from Saint-Gobain for adhesive bonded hose construction
Saint-Gobain statement of change noticiation (29th May 2018)
Removal of FDA compliance for Versilon TLCT/SFTL, WTLCT, CTL, PSTLCT (PharmaSmooth), TLCTO, WSIB
> Four (4) CMR (Carcinogenic, Mutagenic and toxic to reporduction) substamces identified
> Inner fluid contact layer does not act as a functional barrier to external layers that contain adhesives for bonding hose construction
Aflex Hose are keen to emphasise the significant differences in construction between adhesive bonded constructions (e.g TLCT) and the Aflex non-adhesive construction ( Biofelx Ultra, Pharmaline N, Corroflon, Pharmaline X, Corroline+, Hyperline Range, Smoothbore and Visiflon)
Adhesive bonded constructions (e.g TLCT)
- Inner core layer (FEP)
- External layer bonded to the inner core with adhesive
- Strengthening layers 9e.g0 braid, material, wrap) embedded within rubber layers and bonded
- Manufacturers often only claim validation compliance for the liner material
This type of consteuction is prevalent within the hose industry and products will comply with techincal standards. A common standard for an adhesive bonded construction is EN 12115, which requires a minimum adhesive strength between the layers of the construction.
Adhesive bonded construction from Saint-Gobain TLCT
Non-adhesive bonded construction - Aflex Hose
Aflex Hose Ltd manufacture tot he European technical standard EN16643
''EN 16643: Reubber and plastics hoses and hose assemblies - Non-Bonded fluoroplastic lined (e.g PTFE) hoses and hose assemblies for liquid and gaseous chemicals - Specification''
Bioflex Ultra with EPDM / Pt Silicone cover
Aflex hose products do not utilise an adhesive bonded construction. Aflex Hose have full FDA and USP validations for all materials of construction.
PTFE liner SS316 helix and SS 316 braid