Closures and liners
Updated
On this page9
What is here, by liner
61 carry an HIS induction-seal liner, 38 F217, 30 pressure-sensitive, 25 none, and the rest are foam, PE foam and a standard plastisol. That distribution is the most useful fact on this page.
Why the HIS set matters most
A bonded membrane holds with the cap off and gives visible tamper evidence. For a product that spends itself on contact with moisture, that is a materially better barrier than a compressed gasket.
And it needs a machine
Those 61 closures are foil-faced liners until they pass under an induction head at the right power and line speed. The capability is the purchase, not the cap.
F217 and foam for a less demanding product
A bath tea or a coarse salt in a cupboard is not under the same pressure. A good compressed liner, consistently torqued, is a proportionate answer and far cheaper to run.
No liner is sometimes deliberate and wrong here
Twenty-five closures carry none, which suits a display jar or something with its own sealing fitment. For a hygroscopic reactive product it is the wrong choice and it is easy to order by accident.
Essential oils and the liner
Bath products are heavily fragranced, and the oils attack several liner materials over months. Ask the supplier with the oil and the loading named rather than asking whether a liner is suitable in general.
Standardize, then prove it
One neck, one closure, one liner and one sealing setting across the range, then keep retained samples and open them late. With 89-400 and 70-400 carrying 56 containers each, there are two obvious places to standardize.
The cheapest line on this shelf is the dearest mistake
A closure with no liner is a little cheaper and it is the one choice that defeats the entire purpose of the container for six of the eight leaves. It is also easy to order by accident, because the listing looks like any other cap.