Poly Scrim Reinforcement and Paper Basis Weight
A paper's basis-weight number and its reinforcement describe different parts of the purchase specification. If a wrapping design requires reinforced paper, replacing it with paper carrying the same pound designation does not, by itself, preserve that construction.
Identify the documented reinforcement
KPR3650 is listed as a 36-inch by 300-foot reinforced kraft paper roll with a 50# basis-weight designation. Its description explicitly identifies poly scrim reinforcement. The purchase unit is one roll. Keep all four fields on the material record: paper grade, reinforcement, width and length.
The listing does not give the scrim spacing, direction, total composite thickness or a quantitative tear test. Do not convert the 50# designation into any of those measurements. It is also not the stated weight of the complete roll.
| Field | KPR3650 listing | Why it remains separate |
|---|---|---|
| Paper designation | 50# basis weight | A grade number does not identify reinforcement. |
| Reinforcement | Poly scrim | A specific construction feature must remain on the order. |
| Roll size | 36 in x 300 ft | Width and length govern the supplied web dimensions. |
Review a proposed substitution by construction
Suppose a hypothetical packing specification names a reinforced wrap and purchasing receives an offer for “50 lb kraft.” That description answers the grade field but leaves the reinforcement field unresolved. Ask for the proposed material's construction instead of approving the substitution because one number matches.
If the job does not require reinforcement, record that decision explicitly. It permits a different comparison while avoiding an accidental change to a design that originally called for a reinforced material. The requirement should come from the packing specification, not from assuming that every reinforced roll is the best choice.
Keep the reinforcement distinct from a coating
The documented feature here is poly scrim reinforcement. It should not be rewritten as a continuous poly coating or a waterproof film layer. Those descriptions make different claims about construction, and the product record does not establish them for KPR3650.
If a surface barrier, a particular total thickness or a recycling requirement is part of the job, obtain the relevant exact-product evidence separately. The word poly within the reinforcement description does not answer all requirements associated with other plastic-containing papers.
Preserve the construction on the repeat order
Retain the complete material description with the roll SKU and approved wrapping arrangement. That gives the next buyer a specific requirement to compare, rather than a shortened “50 lb paper” line that loses the feature on which the original selection depended.
Review KPR3650 for the exact product specifications and order units. Use Kraft Paper Buying Guide for related purchasing options, and keep the selected SKU attached to the documented packing arrangement.