A kind of process units of PET show and colour
Technical field
The utility model relates to a kind of process units of PET show and colour.
Background technology
It is high that the PET material has hardness, and poor flexibility without characteristics such as ductility, is not suitable in process of production long distance and carries (phenomenon wrinkling, that give a discount easily occurring).As shown in Figure 1, when producing the PET show and colour, first the PET film is derived at present, plated by the preheat roll preheating, then apply PU glue at the positive and negative of PET film, then enter oven for drying through guide wheel guiding repeatedly, complete at last with the PVC film and fit.In this technique stroke, the PET film will be through amounting to more than 30 guide wheel before and after the up and down.Production run is long, guide wheel is many, again due to the PET material, causes the PET very difficult regulation and control of phenomenon wrinkling, that give a discount in process of production, causes the finished product rate low, and yield rate is generally in 70% left and right.
The utility model content
The utility model provides a kind of production technology of PET show and colour for above-mentioned defective, can guarantee that the PET that produces has than good quality, further improves yield rate.
For this reason, the utility model is taked following technical scheme, a kind of process units of PET show and colour, it is characterized in that with the gluing of PVC film glue spreading system, first that the single face hot-rolling pressurization to the PET film after upstream PVC film roller coat PVC paste resin is compound, downstream PVC film roller coat PVC is stuck with paste after resin compoundly to the another side hot-rolling pressurization of PET film, the compound temperature of hot-rolling pressurization is 180 ℃-190 ℃ again, complete PET film and PVC film compound after calendering again, cooling and rolling finished product;
Described PVC film glue spreading system comprises:
PET debatching roller also comprises warm-up mill, is used in conjunction with upstream pressure roller and downstream pressure roller with warm-up mill; The PET film is the pile warp warm-up mill after the debatching of PET debatching roller, successively by upstream pressure roller and downstream pressure roller;
PVC debatching roller in upstream is used in conjunction with and holds with upstream PVC debatching roller the feeding groove that PVC sticks with paste resin, and material roller on first is set on feeding groove; The PVC film from upstream PVC debatching roller place's debatching by the supreme trip pressure roller of upper material roller;
PVC debatching roller in downstream is used in conjunction with and holds with downstream PVC debatching roller the feeding groove that PVC sticks with paste resin, and material roller on second is set on feeding groove; The PVC film from downstream PVC debatching roller place's debatching by second on material roller to the downstream pressure roller.
The utility model forms compound with the pressurization of PET film hot-rolling after first PVC film roller coat PVC being stuck with paste resin again, utilize PVC of the present utility model to stick with paste resin and can guarantee that PVC and PET combine closely, saved the processing step that PU glue on the PET film is advanced again the baking box oven dry, effectively shorten the processing technology stroke that the PET show and colour is produced, reduced the procedure of processing for the PET film.When having guaranteed production, the PET film remains smooth and does not give a discount wrinklingly, effectively improves the finished product rate.The utility model is produced in the PET process, and PET only passes through approximately 10 guide wheels, because new PVC film glue spreading system simplifies the structure greatly, has improved production efficiency, reduces production costs.
Description of drawings
Fig. 1 is the structural representation of existing PET film glue spreading system.
Fig. 2 is the structural representation of PVC film glue spreading system of the present utility model.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the utility model.
PVC film glue spreading system as shown in Figure 2 comprises:
PET debatching roller 1 also comprises warm-up mill 2, the upstream pressure roller 3 and the downstream pressure roller 4 that are used in conjunction with warm-up mill 2; PET film 11 is pile warp warm-up mill 2 after 1 debatching of PET debatching roller, and by upstream pressure roller 3 and downstream pressure roller 4, the end of warm-up mill 2 also is provided with knurling rolls wheels 13 successively.
Upstream PVC debatching roller 5 is used in conjunction with and holds with upstream PVC debatching roller 5 feeding groove 6 that PVC sticks with paste resin 10, and material roller 7 on first is set on feeding groove 6; PVC film 12 from the 5 places debatching of upstream PVC debatching roller by upper material roller 7 to upstream pressure roller 3;
Downstream PVC debatching roller 8 is used in conjunction with and holds with downstream PVC debatching roller 8 feeding groove 6 that PVC sticks with paste resin 10, and material roller 9 on second is set on feeding groove 6; PVC film 12 from the 8 places debatching of downstream PVC debatching roller by second on material roller 9 to downstream pressure roller 4.
Utilize the processing step of PVC film glue spreading system gluing as follows: first that the single face hot-rolling pressurization to the PET film after upstream PVC film roller coat PVC paste resin is compound, again that the another side hot-rolling pressurization to the PET film after downstream PVC film roller coat PVC paste resin is compound, the temperature that hot-rolling presses glue is 180 ℃-190 ℃, complete PET film and PVC film compound after calendering again, cooling and rolling finished product.The weight portion proportioning that PVC sticks with paste resin is:
The utility model adopts the single gluing to the PVC film, direct and PET film hot-rolling pressurization forms compound, remove the processing step that PU glue on the PET film is advanced again the baking box oven dry, effectively shortened the processing technology stroke that the PET show and colour is produced, reduced the procedure of processing for the PET film.When having guaranteed production, the PET film remains smooth and does not give a discount wrinklingly, effectively improves the finished product rate.Because new PVC glue spreading system simplifies the structure greatly, improved production efficiency, reduce production costs.
Should be understood that these embodiment only to be used for explanation the utility model and be not used in restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.