2012必威体育精装版纸板的耐破度测定法（2012. Determination of bursting strength of new paperboard）.docVIP

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2012必威体育精装版纸板的耐破度测定法（2012. Determination of bursting strength of new paperboard）.doc

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2012必威体育精装版纸板的耐破度测定法（2012. Determination of bursting strength of new paperboard）

2012必威体育精装版纸板的耐破度测定法（2012. Determination of bursting strength of new paperboard） The equivalent standard ISO2759 board - Determination of bursting strength by international standards 1 subject matter and scope This standard defines the hydraulic principle of incremental method determination method for resistance breaking of cardboard. This standard is applicable to the determination of bursting strength in 350-5500kPa (3.6-56.1kgf/cm) of various types of cardboard (including solid cardboard and corrugated cardboard). This standard is not applicable to high elongation and multi-layer composite corrugated board. 2 reference standard Take the GB/T450 paper and paperboard specimens Determination of GB/T451.2 paper and paperboard quantitative The term GB/T4678 paper, cardboard, paper pulp of the first part The standard atmospheric GB/T10739 pulp, paper and paperboard specimen processing and testing The 3 term Bursting strength and bursting index GB/T4687 - 1984 in 7.36 and 7.37. The 4 principle In accordance with the provisions of the instrument to a certain pressure on the sample holder upper and lower clamping disc, with a constant speed hydraulic reciprocating pump, the film and the sample bulges, until the sample rupture, the maximum hydraulic pressure applied, such as sample breaking resistance. 5 instrument 5.1 clamp system For uniformly and firmly hold the sample, the upper and lower clamping plate is two parallel annular plane, and a flat torus groove (see Appendix A), appendix A gives chuck system size. 5.1.1 chuck and finale with ball or similar joint connecting device, the pressure plate to ensure uniform distribution of clamping. 5.1.2 under the clamp internal concentric, the maximum error concentricity shall not exceed 0.25mm, the two clamp surface should be flat and parallel inspection method of the chuck see Appendix B. 5.1.3 to prevent the sample slide, two clip disc should have sufficient clamping force, the force to limit damage to the specimen, the clamping