Aging behaviour/weather resistanceĪfter simulation of a one-year natural outdoor weathering with 2000 MJ/m2, the elongation of the 686 % (minimum value 350 %), i.e. When checking the penetration resistance in the surface, fold and weld are Manufacturer specified values area ≥ 650 g, fold ≥ 450 g and weld ≥ 650 g. Missible ≤ 10 %) the reduction of the elongation of the transversely was 2.2 % (allowed ≤ 15 %). After acid storageĪfter ten days of storage in a mixed acid (3 % milk, 1.5 % vinegar and 0.5 % butyric acid) reduction in tear resistance transversely was 4.1 % (per. The film thus fulfilled the requirements. The elongation at the break was 668 %, transversely 691 % and over folds at 656 % above the required minimum value of 400 %. Taking into account the film thickness resulting in a tear resistance longitudinally of 49.9 MPa, across 46.7 MPa and over folds 44.5 MPa (minimum value 17 MPa each). The tearing force was 38.4 N/cm, transverse 36.2 N/cm and over folds 35.5 N/cm (minimum value 25 N/cm each). The film was uniformly opaquely coloured, free of streaks and pores. As a result, the requirements for the mean for the film thickness and the permissible deviations are of the average value have been complied with. The measured microvalue was 0.074 mm and the measured maximum value was 0.082 mm. Film thicknessĪs an average value for the film thickness, 0.078 mm was determined. The measured film dimensions corresponded to film length and film width of the declaration. The silo foil Blue 9, light blue/black, UV-stabilized, 80 microns, is suitable for silage cover. In addition, the manufacturer must measures of self-control in production obliged. The product quality is determined according to the annually by a DLG monitoring audit controlled. The gas permeability is determined according to DIN 53380-3: 1998-07 with oxygen at +23 ☌ 0.2 bar, investigated. The dimensional measured is changed in accordance with DIN 53377:2007-10 Change in moderation after 1/2 hour storage in +80 ☌ hot air. After that, the elongation of the tear is 527-3:2003-07 measured in transverse direction. The weathering of the material is controlled with xenon arc lamps according to DIN EN ISO 4892-2, method A, synchronisation with irrigation 102/18 to 2000 MJ/m2, black standard temperature 60 ☓ ☌, relative humidity 65 ☓ %, EUV=60 W/m2. So, the values specified by the manufacturer are checked. The penetration resistance of the film is applied in surface, fold and the weld based on DIN EN ISO 7765-1:2004-10, procedure A performed. Acid storage: 10 days storage in mixed acid from 3 % milk, 1.5 % vinegar, 0.5 % butyric acid. Tear force, elongation and tear resistance longitudinal, transverse and over folds are measured in accordance to DIN according to DIN EN ISO 527-3:2003-07 at +23 ☌ test speed 500 mm/min Type 2 sample body deformation measurement between measuring marks, in new condition measured by acid storage. Important parameters for the strength of a silo film are tearing force (per cm film width), tear resistance (based on the cross-section of the sample body) and the elongation of the rip (elongation of the specimen to the breaking). It is visually checked whether the film has a evenly has opaque colouring and is free of smears and pores. The film thickness is calculated in accordance with DIN 53370:2006-11, method P at +23 ☌ (stay with regenerate film the stalks are not taken into account). The length and width of the silo foil are calibrated band measurement. The suitability of the silo film was determined on the basis of the laboratory results judged. The test basis was the DLG test frame for reernate-free and reernate-containing silo films made of low-density polyethylene (PE-LD) with and without barrier shifts, as of November 2016. The DLG quality seal test included technical measurements in the laboratory. The approved products are then published. Successful testing is concluded with the assignment of the DLG QUALITY SEAL. in line with the applicable legislation, as well as with technical and scientific progress. Testing contents and requirements are developed further by the responsible specialist departments of the DLG e.V. The tested criteria and the requirements to be fulfilled are specified by independent commissions and are designed – over and above legal requirements – to prove the product’s fitness for purpose, its advertised characteristics and practical requirements. The DLG QUALITY SEAL for operating equipment and consumables encompasses products, which are subjected to extensive testing of their value-determining and advertised characteristics.
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