Index Packaging Inc - Protection by Design
1055 White Mountain Hwy, Milton, NH 03851
Monday to Friday   7:00am-5:00pm


close-up convoluted foam


Polyurethane foam is formed by adding two chemicals together. The chemical reaction causes the foam to expand rapidly, creating millions of air bubbles which stay open as the foam hardens into its final form. The end result is a flexible, sponge-like material which compresses and cushions as force is applied to it. Air easily passes from cell to cell within the foam, making it highly shock absorbent. Polyurethane comes in a variety of densities.


Polyethylene foam is created much like polyurethane foam. However, as the foam hardens, the bubble walls remain intact and do not release any of their gas. Air is blocked from passing from bubble to bubble, which results in a more firm, rigid, and durable foam. It still provides strong cushioning as the bubble cells will still compress slightly under pressure. This foam is preferred to protect heavier objects, since it will withstand more weight.


EPS, or expanded polystyrene, is created by heating and pressing beads of the chemical styrene together to form a highly insulative foam. Polystyrene is mostly air, which is why it makes such a good insulator, and it is often used for packaging hot or cold items. You may have seen this foam in a cup shape holding your hot chocolate or surrounding fresh steaks you ordered in the mail!


Corrugated is a three-layered cardboard product most often used for boxes and other packaging supplies. It's made by combining two sheets of kraft paper separated by a layer of crimped kraft paper. This middle layer full of folded kraft paper and air pockets give the corrugated enough bounce to protect whatever it holds. At Index, we offer an incredible selection of Corrugated Products for you to choose from.

corrugated stack


Our hardwood comes in a variety of species including maple, oak, birch, and more. We source most of our hardwood from Canada. In general, hardwood is a sturdier subset of wooden materials because of its increased density. Hardwood is likely not heat treated when we receive it and undergoes that process on the property. We use hardwood in applications where rough-cut lumber is needed.


Our softwood comes in multiple varieties including spruce, pine, and fir. However, we mainly manufacture pine products. We source most of our softwood from Canada. Index's standard crate uses 1x4 softwood cleats. Softwood is a less dense material, and is therefore more flexible. Its resistance to splitting makes it a great solution for industrial shipping products and residential structures. 


Plywood is composed of laminated layers of veneers of hard and softwood. These layers are rotated 90° at each layer for additional strength. We utilize different types of ply products such as CDX (rough on all sides) and G1S (good-on-1-side). We use plywood for everything from ATA case panels and dividers, to crate paneling, to ramp manufacturing. Plywood is the perfect panel product that is a compromise of weight, price, and strength.