General processing and safety instructions
-State April 2014-
Textiles are subject to certain fluctuations in terms of weight, color, width, "handle" and other properties due to production. Therefore, only the same production batches should be processed together. Smaller stains, mesh defects or rows of tiles are unavoidable in production, they are typical textile properties and must be accepted.
2. Transport and storage
In order to prevent damage (pressure points, upsets, etc.) textile rolls should be transported and stored lying flat on the ground. In the store-/warehouse should be this climate:
Temperature: 18 ° C to 30 ° C,
20 ° C to 22 ° C recommended
Humidity: 40% to 60% condensation-free,
50% to 55% recommended
Too high or too low humidity can have a clearly negative effect on the printing process, especially in the case of coated fabrics.
3. Wash and heat shrink
Fabrics made of synthetic yarns may shrink during washing and heating. The shrinkage values vary depending on material, construction and process (washing, steaming, calendering). A low shrinkage value is an important parameter of the Berger textiles, so they are prefixed. After fixation, the fabric dimension is fixed and remains the same. During sublimation process the material reheats, which can shrink the fabric in terms of length and width by about 1-3%. This residual shrinkage is unavoidable and the deviation of 1-3% is within the normal textile tolerance.
Recommendation: In the case of dimensionally sensitive products prior to final assembly, a voltage-free storage for approx. 24 hours at approx. 50% humidity should be ensured.
4. Flame retardant fabrics
Flame retardant fabrics are either made of flame retardant yarns (e.g., TCS) or they are flame retardant coated. Examinations and certificates are valid for original delivered fabrics. Due to the different printing techniques and inks (transfer printing, direct printing, dispersion inks, UV curing inks, solvent inks, latex inks, etc.) and the various further processing (fixing, washing, assembling, ...) it is impossible to make further statements about flame retardancy.
Recommendation: Processed fabrics or finished products should be tested in case of doubt.
5. Printing and fixing
The print operation should always be observed to avoid damage to the printer or print head. Berger textiles are basically suitable for the specified printing processes. The print results and the color fastness are influenced by many factors and can not be guaranteed in general. These factors include printing processes, inks, drying, fixing, transport, storage, and climatic conditions. Therefore, each new combination or change of a single component must be tested by the user.
Calenders: In general, calenders should be equipped with an air suction system for transfer printing or for the fixing of dispersion inks. Residues of the equipment, the inks and the residual moisture from the textiles or the coatings can lead to evaporation. Usually the possible dangers and preventive measures are mentioned on the safety data sheets of the ink manufacturers. The textile must not be heated above 210 ° C, since otherwise a chemical decomposition with harmful or corrosive vapors may occur.
Contamination can be avoided if the calender is regularly cleaned and maintained. In order to keep the calender blank clean, a sufficiently strong protective paper should run on both sides and the fixing temperature should not exceed 195 ° C.
Sublimation Printing: When printing with sublimation dyes, migration or staining can occur after fixing, mainly by unfixed ink. The correct setting of the fixation (temperature, contact time, pressure, ...), the appropriate media profile (temperature, ink application, ...) and subsequent washout can significantly reduce these effects. The migration / staining can not be influenced by the material and therefore has to be tested for each combination.
6. Subsequent cuts (parting)
The subsequent trimming / parting of wide rolls (e.g., 320 cm in 2 × 160 cm) is made at the customer's request against calculation and at his risk. The cut can vary up to 1.5 cm in any direction. Due to the subsequent cut, the edge can appear wavy. Therefore, it should not be printed to the edge, because this may have to be cut or re-sewn. Cut goods are excluded from a complaint.
7. Durability in the outdoor area
Textiles marked with "outdoor" can generally be used outdoors in the short term. A durability guarantee can not be given due to different weather and environmental influences.
The information given here is based on experience, tests and practical applications. Due to the large number of possible influences, self-tests are essential. A legally binding assurance of certain properties of the Berger products can not be derived from the above data.