BS ISO 16260:2016 pdf download

BS ISO 16260:2016 pdf download.Paper and board — Determination of internal bond strength
1 Scope
This International Standard describes a method to measure the energy required to rapidly delaminate a test piece of paper or board. Rupture of the test piece in the “Z” or thickness direction is initiated by a pendulum having a defined mass, moving at a defined velocity. The procedure is suitable for both single- and multi-ply papers and boards, including coated sheets and those that are laminated with synthetic polymer films. It is particularly suitable for papers and boards that may be subjected to Z-direction [2],[5] rapid impacts, impulses, or shock loads during printing or conversion. The test procedure entails the adherence of double-sided adhesive tape to both sides of the test piece under pressure. For this reason, the method may be unsuitable for materials that might be structurally damaged by compression or are porous enough to permit migration of the tape adhesive into or through the test piece.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 186, Paper and board — Sampling to determine average quality
ISO 187, Paper, board, and pulps — Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples
ASTM D3330/D3330M-04(2010), Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 internal bond strength
average energy, expressed as Joules per square metre of surface, required to delaminate a test piece under the conditions of the test
3.2 test assembly
test piece, mounted ready for the test
Note 1 to entry: The test assembly consists of the test piece, laminated between two pieces of double-sided adhesive tape, with the bottom side of the lower tape layer adhered to a rigid metal anvil and the upper side of the upper tape layer adhered to an “L”-shaped aluminium platen.
4 Principle
A square test piece is adhered to a flat metal anvil by means of double sided adhesive tape. An “L”-shaped aluminium platen with the same surface area as the test piece is then adhered to the upper surface of the test piece, again using double sided adhesive tape. The assembly is shown in Figure 1. The assembly is secured in position and a pendulum allowed to impact the upper inside surface of the platen, causing it to rotate about its outside corner, splitting the test piece in the “Z” or thickness direction (Figure 2)