Containers

Twelve liner values

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The closures on this shelf record twelve different liners Which is a long tail for a shelf of 255 rows The largest single value is the one that needs a machine So 63 of 255 closures are specified for a process this shelf does not mention Pressure sensitive is the next one with a condition attached And a quilting jar is opened and closed repeatedly The convention also varies by closure family Which is a supplier side pattern and not a physical one What the record says and what it does not Which is the same restraint the rule above shows References

The liner is a surface nobody looks at. And it decides what the closure does.

The closures on this shelf record twelve different liners

63 heat induction seal, 42 F217, 31 with no record, 31 pressure sensitive, 27 recorded as No Liner, 21 Plastis standard, 19 PE foam, 15 foam, 3 polycone, and one each of Plastis pasteur, F828 and PPE.

Which is a long tail for a shelf of 255 rows

Three values appear once. The top two account for 105 rows between them and the remaining ten values share the other 150.

The largest single value is the one that needs a machine

A heat induction seal liner is designed to be bonded to the container rim by an induction sealing machine. Without that step it sits in the cap, and the record does not say whether anybody will run that step.

So 63 of 255 closures are specified for a process this shelf does not mention

That is a fact about the catalog rather than a problem with the closures. It matters because a buyer choosing by neck finish alone can land on one without intending to.

Pressure sensitive is the next one with a condition attached

A pressure sensitive liner is designed to adhere to the rim on contact and for a single application. It is not the liner for a jar that will be opened and closed repeatedly.

And a quilting jar is opened and closed repeatedly

Which is the point of raising it. A sorted set of clips or pins is accessed constantly, and 31 of the 255 closures on this shelf are specified for a single seal.

The convention also varies by closure family

The 169 continuous thread polypropylene lids carry eight different liner values. The 39 metal or aluminum CT caps are dominated by one, with 21 of 39 recording Plastis standard. The 22 PP dome lids are 11 F217 and 8 No Liner.

Which is a supplier side pattern and not a physical one

Nothing about a metal cap requires one liner family. The distribution reflects how the catalog was built, and that is worth knowing before treating the liner field as a specification.

What the record says and what it does not

It states the liner type. It does not state what any liner will achieve in any particular use, and no page here converts a liner name into a seal, a barrier or a storage life.

Which is the same restraint the rule above shows

A fabric gets a class from a measured burn time and nothing further is claimed about it. A closure gets a liner name from the record and nothing further is claimed about that either.

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 1610.6(a)(1), which gives guidelines for fabrics that "require extra attention when preparing test specimens because of their particular construction characteristics", noting that the list "is not intended to be all-inclusive". Fabrics flocked overall "are treated as raised surface textile fabrics"; flock printed fabrics "shall be treated as plain surface textile fabrics"; cut velvet with a patterned construction "shall be considered a raised surface textile fabric"; metallic thread fabrics "shall be considered plain surface textile fabrics provided the base fabric is smooth", with specimens cut so that "the test flame impinges on a metallic thread"; and flat woven constructions with burn-out patterns "shall be considered plain surface textile fabrics". Paragraph (a)(1)(vi): "Narrow fabrics and loose fibrous materials manufactured less than 50 mm (2 in) in width in either direction shall not be tested. If a 50 mm by 150 mm (2 in by 6 in) specimen cannot be cut due to the nature of the item, i.e. hula skirts, leis, fringe, loose feathers, wigs, hairpieces, etc., do not conduct a test." 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.