Manimum Size and Weight - Minimum Requirements

Boxes must comply with the burst, puncture or edge crush test and other requirements shown below.

Test Procedures

1. Burst Test
   1. Tests to determine compliance with the bursting test requirements must be conducted in accordance with Technical Assoication of Pulp and Paper Industry (TAPPI), Offical Test Method T-810.
   2. A minimum of six bursts must be made, three from each side of the board, and only one burst test will be permitted to fall below the specified minimum value. Board failing to pass the foregoing test will be accepted if the retest consisting of 24 bursts, 12 from each side of the board, not more than four burst tests fall below the specided minimum value.
2. Puncture Test
   1. Tests to determine compliance with the puncture test requirements must be conducted in accordance with Technical Assocation of Pulp and Paper Industry (TAPPI), Offical Test Method T-803.
   2. A minimum of four puncture tests must be made and only one puncture test will be permitted to fall below the specified minimum value.
3. Edge Crush Test
   1. Tests to determine compliance with the edge crush requirements must be conducted in accordance with Technical Association of Pulp and Paper Industry (TAPPI), Offical Test Method T-811, A or B.
   2. A minimum of six tests must be made and only one test is permitted to fall below the specification minimum value, and that one test cannont fall below the specified minimum value by more than 10%.
   3. Board failing to pass the foregoing will be accepted if in a retest consisting of 24 tests, not more than four tests fall below the specified minimum value, and none of those tests fall below the specified value by more than 10%.

Weight Facings

The minimum combined weight of facings specified in this table do not apply in connection with board complying with the minimum edge crush test. Any combination of facings in combination with corrugated medium(s) is sufficient to provide corrugated fibreboard that will comply with applicable minimum edge crush requirements.

Size Extension Formula

If weight of box and contents is less than the maximum weight shown, the manimum outisde dimensions for the box may be increased half the percentage that the actual weight is less than the maximum weight specified.

Alternate Requirements

Where rules, commodity descriptions and Numbered Packages specify boxes, containers, trays and component parts thereof to be made of corrugated fibreboard having a minimum bursting or puncture test as shown in Column A below, boxes, containers, trays and component parts thereof may be made of corrugated fibreboard having a minimum edge crush test as shown in Column B below. These alternate provisions will exempt basis weight requirements.