Containers

Three materials, three marking routes

On this page15

The mix Which is narrow for a shelf this size Glass is the permanent surface And glass rejects adhesive over time So glass is the best and worst surface PET takes a label well And PET scratches and hazes Polypropylene is the awkward one Which matters for indelibly and permanently So the material mix maps onto the standard directly And the proportionality clause bends to it Which is the one axis of this shared shelf that bears on the spine And the absence of metal matters here The inventory itself is enumerated next door References

Each takes a mark by a different process.

The mix

117 PET, 78 polypropylene and 56 glass out of 251 containers. Three materials and no fourth.

Which is narrow for a shelf this size

No metal, no polyethylene, no steel and no tin. Three options across 251 containers.

Glass is the permanent surface

56 containers. It takes an etched mark or a fired ceramic ink, and either one is permanent in a way no label is.

And glass rejects adhesive over time

Particularly in the presence of oil, which on an electrical bench is routine. The label lifts and the mark goes with it.

So glass is the best and worst surface

Best for a fired mark and worst for a stuck one, and we supply neither process.

PET takes a label well

117 containers, and PET is the standard label substrate. Adhesion is good and the surface is smooth.

And PET scratches and hazes

Which degrades legibility of anything printed on the container itself and of the view through it.

Polypropylene is the awkward one

78 containers. A low surface energy material, which is the technical reason adhesive labels lift from polypropylene more readily than from PET.

Which matters for indelibly and permanently

Two of the three adverbs in the marking standard are about the mark staying, and a label on polypropylene is the least likely to.

So the material mix maps onto the standard directly

Glass for a fired mark, PET for a label, polypropylene for a label with reservations.

And the proportionality clause bends to it

As the nature of the container will permit, which means the standard accounts for the surface rather than ignoring it.

Which is the one axis of this shared shelf that bears on the spine

Sixteen groups use these 251 containers and for this group the material is the compliance variable.

And the absence of metal matters here

A metal container takes a stamped or embossed mark, which is the most permanent of all. There is no metal container on this shelf, so that route does not exist.

The inventory itself is enumerated next door

The sewing notions property sets out the families, colours, necks and closures of this shelf in full.

References

The Davis Pack Supply catalog, measured 19 October 2026. The 251 containers on this shelf are 117 PET, 78 polypropylene and 56 glass. There is no metal and no polyethylene. Glass takes an etched or fired mark and loses an adhesive label to oil; PET and polypropylene take an adhesive label well and take an etch not at all. We publish no marking, printing or decorating service of any kind.

The Davis Pack Supply catalog, measured 19 October 2026. 539 rows: 251 containers and 288 closures. This is the store-small-dry shelf, shared identically by nine groups, and the sewing notions property enumerates the inventory. 5 to 500 mL with a median of 177. 117 PET, 78 PP, 56 glass. 210 jars, 27 bottles, 12 tubs and pails, 2 tubes. Buyability, a snapshot: 159 of 251 available, 91 not, 1 unrecorded; 93 quote only; 65 full case only, with case packs from 12 to 6,370 and a median of 288.

Written from 19 U.S.C. 1304 and from the catalog as it stood on 19 October 2026. That section is customs marking for articles of foreign origin and nothing here determines the origin of anything, what subsection (b) requires of containers, or how the exceptions are administered. Made in USA claims are a different scheme covered in the favors and gifts property. We publish no marking, printing or decorating service: the mark goes on by some process we do not supply. This shelf is shared identically by nine groups and the sewing notions property enumerates the inventory.