Closures and liners
On this page10
What is on the shelf
330 continuous thread, 43 dropper assemblies, 20 dome lids, 16 flip tops, 14 phenolic, 8 specialty, 6 liners and sealing discs and 6 dropper tips and caps.
The plain cap does most of the work
For a dry supplement nothing needs to dispense. A cap that seals against moisture and survives being opened with a gloved hand is the whole requirement.
Moisture is the enemy for the feed half
An induction seal keeps humidity out until the customer opens it, and after that the thread and the liner are what stands between a premix and a barn in August.
The liner faces the product for months
It is usually a different material from both the bottle and the cap, and it is where a failure shows first. Naming it on the order is the difference between a specified package and an assumed one.
Necks worth standardizing on
89-400 at 127 for the wide-mouth jars, 20-410 at 107 and 24-410 at 84 for the small bottles. Three finishes cover most of a range across both halves of this property.
Which also simplifies the label
Two container families and three finishes means two label sizes rather than six. On a product carrying an ingredient declaration, a guaranteed analysis and feeding directions, that is worth real money.
Test the closed package warm and on its side
For the dry half, somewhere humid as well. Every failure in this category is slow, and the only way to see it before the customer does is to leave a filled sample alone for weeks and then open it.
Ask the closure supplier what the liner is for
Liners are engineered for particular contents: foam for dry, induction foil for a moisture barrier, F217 for general use. Naming the contents rather than the container gets you the right answer first time.
One liner across a range is worth a small compromise
Buying one liner in volume for two products beats buying two in small quantities, provided both are compatible. That is a purchasing decision worth making deliberately rather than per product.