Liners
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What is recorded
73 heat induction seal, 41 F217, 31 pressure sensitive, 26 recorded as No Liner, 28 with nothing recorded, 21 Plastis standard, 19 PE foam, 15 foam, 3 polycone, 1 Plastis pasteur, 1 PPE.
Heat induction seal is the strongest barrier
A bonded foil across the mouth, intact until broken. 73 of 260 and the largest single liner group on this shelf.
And it is a one-time seal
Which suits a product sold sealed and opened once by the customer. It does not reseal, so the closure underneath has to do that job afterwards.
F217 is the resealable one
Foamed polyethylene, which keeps sealing after repeated opening. 41 of 260 and the right choice for a jar a customer returns to.
Pressure sensitive is lighter
31 closures. It adheres on first closing and reads as tamper indication rather than a long-term barrier.
Polycone is the one for a liquid
Only 3 here. A conical insert that seals a narrow neck, which is what a distillate in a bottle would want, and the count is almost nothing.
Foam and PE foam are the general purpose pair
15 and 19. Adequate for a dry product and not a barrier for a volatile one, which is most of what this group is.
54 of 260 have no liner or no record
26 recorded as No Liner and 28 blank. For a product whose loss path is through the closure, that is the portion of the shelf to rule out first.
A blank field is not a claim of no liner
It is an absence of data, which is a different thing. We do not fill it in with a guess, so a blank means ask rather than assume.
Specify it in the order
A container and a closure chosen without naming the liner is a container and a closure chosen on two of the three things that decide the outcome.