Containers

No Liner is not the same as no record

On this page11

Fifty eight of the 255 closures have nothing in the liner field, in one of two senses No Liner is a fact somebody established A blank is not a fact at all Collapsing the two would lose information in the worse direction Which is precisely the distinction the rule above makes And the rule treats a different silence as evidence That is the whole of it, and it generalizes This shelf did it on the liner and did not do it elsewhere So the practice is inconsistent across fields on the same shelf And nothing here fills a blank in References

One is an answer. The other is a question that was never asked.

Fifty eight of the 255 closures have nothing in the liner field, in one of two senses

Twenty seven record No Liner. Thirty one record nothing at all. The shelf keeps those apart, which is the right way round and is not always how a catalog behaves.

No Liner is a fact somebody established

It says the closure is supplied without a liner, which is ordinary for a plain lid on a dry storage jar. A buyer can rely on it the same way they rely on a capacity.

A blank is not a fact at all

It says the field was not populated. The closure may have a liner, may not, and the record is silent. Nothing can be concluded from it in either direction.

Collapsing the two would lose information in the worse direction

Treating every blank as No Liner would turn 31 unknowns into 31 claims. Treating every No Liner as a blank would throw away 27 answers somebody had already obtained.

Which is precisely the distinction the rule above makes

If there is only one burn time out of the ten test specimens, the test is inconclusive and the fabric cannot be classified. Not a safe default, not a permissive one. No classification.

And the rule treats a different silence as evidence

A preliminary Class 1 may be assigned where there are no burn times at all, because a specimen that does not ignite has told you something. Silence from a performed test is data; silence from no test is not.

That is the whole of it, and it generalizes

A blank means one thing when a procedure was run and produced nothing, and another when no procedure was run. A field cannot distinguish them unless somebody wrote both states down.

This shelf did it on the liner and did not do it elsewhere

Nineteen of the 251 containers on the full shelf record no neck finish and 250 of 251 record no container liner, with a single row reading No Liner. There is no affirmative none for the neck finish field.

So the practice is inconsistent across fields on the same shelf

Which is useful to know rather than a reason to distrust the whole record. The closure liner field can be read as three states. The neck finish field can be read as two.

And nothing here fills a blank in

No page on this property infers a liner, a neck finish or a dimension that the record does not carry. A field that is absent stays absent on the page.

References

The Davis Pack Supply catalog, measured 19 October 2026. The 255 closures on this shelf record twelve different liner values: 63 heat induction seal, 42 F217, 31 with no record at all, 31 pressure sensitive, 27 recorded affirmatively as No Liner, 21 Plastis standard, 19 PE foam, 15 foam, 3 polycone, and one each of Plastis pasteur, F828 and PPE. The convention varies by closure family: the 169 continuous thread polypropylene lids carry eight different values, led by 62 heat induction seal and 30 pressure sensitive; the 39 metal or aluminum CT caps are dominated by 21 Plastis standard; the 22 PP dome lids are 11 F217 and 8 No Liner. The record states the liner type and not what it will achieve in any particular use.

16 CFR 1610.7(b)(1). A preliminary classification of Class 1 is assigned when "There are no burn times", or "There is only one burn time, and it is equal to or greater than 3.5 seconds", or "The average burn time of two or more specimens is equal to or greater than 3.5 seconds". Five further specimens are tested where there is one burn time under 3.5 seconds or an average under 3.5 seconds. Then: "Stop testing and assign the final classification as Class 3, Rapid and Intense Burning, only when there are two or more burn times with an average burn time of less than 3.5 seconds". And: "If there is only one burn time out of the 10 test specimens, the test is inconclusive. The fabric cannot be classified." law.cornell.edu

Written from 16 CFR part 1610 and from the catalog as it stood on 19 October 2026. Part 1610 is the Standard for the Flammability of Clothing Textiles and it classifies fabric by how fast a flame spreads across a test specimen; it does not govern clips, pins, blades or templates, and nothing here says it does. No container on this shelf is described as fire resistant, flame retardant or rated for anything, and no liner is described by what it will achieve in any particular use. This shelf is a subset of the store-small-dry shelf and the sewing notions property enumerates that shelf in full.