3 Concepts3.1 Corrugated fibreboardBoard consisting of one or more sheets of fluted paper glued to or between one or more sheets of paper or board (facing) (from DIN 6735).3.2 Single-wall corrugated fibreboardBoard consisting of one sheet of fluted paper interposed between, and glued to, two facings (from DIN 6730).3.3 Multiple wall corrugated fibreboardBoard consisting of…
3 PrincipleThe times of flow of a solvent and a solution of resin in the solvent at a concentration of 0,005 g/ml aremeasured at 25 °C by conventional methods. The viscosity number is calculated from thesemeasurements and from the known concentration of the solution. Specific gravity difference and kineticenergy corrections are small in this method…
5 Apparatus 5.1 The test device may be constructed in different ways. In general, it consists of a horizontal test table, a sled, and a driving mechanism to produce a relative motion between the sled and the test table, regardless of which is the moving part. Figure 1 shows an example of apparatus in which…
5.5 Heat reversion 5.5.1 Main profile “When tested in accordance with EN 479 for each test specimen the heat reversion (R) of the two largest opposing sight surfaces shall not be > 2,0 %. The difference in heat reversion for each test specimen between these sight surfaces shall not be > 0,4 %. 5.5.2 Auxiliary…
9.1 Test criteria9.1.1 Material shall be classified 5VA or 5VB on the basis of test results obtained on small bar and plaquespecimens when tested as described in (9.2.1 – 9.6.5).Exception: For materials that are submitted for a 5VB rating only (i.e., the manufacturer does not seekthe 5VA rating), plaque specimens do not need to be…
General Methods5.1 Except as otherwise specified in these test methods for rubber O-rings, the following ASTM test methods applicable in general to vulcanized rubber, shall be complied with as required and are hereby made a part of these test methods:5.1.1 Tension Test—Test Methods D 412.5.1.2 Compression Set—Test Methods D 395.5.1.3 Low Temperature—Test Method D 1329.5.1.4…
The best method for testing electrotechnical products with regard to fire hazard is to duplicate exactly the conditions occurring in practice. In most instances this is not possible. Accordingly, for practical reasons, the testing of electrotechnical products with regard to fire hazard is best conducted by simulating as closely as possible the actual effects occurring…
System is installed on extruder input, and measures the Kg/h output of extruder continuously. Based on requested weight per meter of pipe, system knows how much should be the line speed. Along with the unit also an encoder will be installed on puller of the extrusion line to measure the real line speed. Speed control…
Ultrasonic technology for thickness measurement is using ultrasound reflection time between our surface of the pipe and inner surface. If you calibrate the device for sound speed in the target material then machine can calculate the thickness. Sound speed in different materials depends mainly on material type and temperature. Of course when you calibrate device…
