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Packaging Supplies Company''s boxes are "200 lb burst test" certified. (We do carry some "275lb burst test" certified boxes too.) This means that the corrugated walls of the box would require 200 pounds per square inch of force to break through the wall of the box. The burst test has been a standard certification for years. More recently a new certification test has started to be used called the Edge Crush Test (ECT). Generally, 200lb test boxes are 32 ECT. ECT is the edgewise-compressive strength, parallel to the flutes of a short column of corrugated fibreboard. Test results are reported as the pounds per inch required causing compression 4milbag failure. ECT relates directly to box compression strength which is important in today''s world of box stacking. For certain items, mailing supplies provide a complete protective package that is ready to ship. Save time, labor, packaging and shipping costs by using mailing supplies. Packaging Supplies Company offers the following styles of mailing supplies: Finding Items: The left side (see image below) of the screen shows a list of major and minor product groups that you may use to browse our product selection. Click on the "Boxes" to see the list of subcategories that appears. If you know what you want you may specify the product description or the item number in the "search" box. Items are located based on the product name and the description of the product. Use 4milbag more specific searches to narrow your searches. Avoid searches such as "box" or "tape". When searching for a specific box, use the "search" box and enter the size in the following format: Product Information: Once you have located an item that interests you, we present a part number and a short description. To view more information about the product, click on the picture of the item. We offer quantity discounts for most items, click on the price to view quantity pricing. Carton sealing tape is available in two varieties, pressure sensitive and water activated. Pressure sensitive tape is typically made of PVC or Polypropylene backing with acrylic, hot melt or natural rubber adhesive. Pressure sensitive tape is 4milbag relatively 4milbag inexpensive, 4milbag provides a good bond for many carton sealing applications and is easily applied with an inexpensive tape gun. Water activated tape is constructed of kraft paper backing and sometimes includes fiberglass reinforcement. Water activated tape requires a stationary dispenser containing water to dispense the tape and activate the adhesive, but forms a superior bond when applied to corrugated cartons. PRESSURE SENSITIVE TAPE Hot Melt Hot melt tape is also known as synthetic rubber and is typically manufactured with a polypropylene backing. Hot melt tape works well from 45-120 degrees, provides a good bond for most carton sealing applications and is the lowest cost pressure sensitive tape available. Hot melt will yellow with time, but will do so more slowly than natural rubber tape. ©2003 www.mailer-packaging-supply.com. All rights reserved. |