Low-loss environmental-friendly preprinted sheet upward production line and production process thereof

Abstract

The invention discloses a low-loss environmental-friendly preprinted sheet upward production line and a production process thereof. The low-loss environmental-friendly preprinted sheet upward production line structurally comprises a corrugated paper forming part, a preprinted sheet and corrugated paper conveying section and a double-faced machine, wherein the double-faced machine comprises a fronthot plate conveying part, a ventilating heating transition section and a back conveying part, heat sources are arranged on the upper and lower sides of a ventilating heating channel of the ventilating heating transition section, a plurality of rollers which are used for preventing the printing layer on the outer surface of a preprinted sheet from being scraped are arranged on the upper side of the ventilating heating channel, and ventilating clearances are formed between the rollers; when the preprinted sheet and corrugated paper on a preprinted sheet frame enter the double-faced machine, theprinting layer of the preprinted sheet is upward and synchronously moves together with the front hot plate conveying part, the rollers and the back conveying part so as to prevent from being scraped.According to the corrugated paper production line, the preprinted sheet frame approaches to the inlet end of the double-faced machine, so that the waste of the preprinted sheet is reduced; additionally, the printing layer of the preprinted sheet is upward, so that the printing layer can synchronously moves together with the conveying component of the double-faced machine, the abrasion is avoided,and the loss caused by scraping is reduced.

Description

technical field [0001] The invention relates to a corrugated cardboard production line, in particular to a low-loss and environmentally friendly pre-printed cardboard face-up production line capable of producing ink-printed pre-printed cardboards and a production process thereof. Background technique [0002] The development of corrugated cardboard production equipment is closely related to the printing process. There are currently three types of pre-printing: [0003] 1. Offset pre-printing: good printing quality, low plate making cost, low printing plate durability, and non-environmentally friendly solvent-based inks are used. [0004] 2. Gravure pre-printing: the printing quality is good, the cost of plate making is high, the printing durability is good, and solvent ink is used. [0005] 3. Flexo pre-printing: good printing quality, low cardboard cost, moderate printing durability, and environmentally friendly water-based ink for cartons. [0006] These three pre-printi...

AI Technical Summary

Problems solved by technology

[0008] However, there are two main ways of feeding paper in the current double-sided machine. One is that the printing layer of the pre-printed paper is facing downward when conveying. Combined with the situation of high-speed conveying, the surface temperature of the printing layer is very high, so the surface of the printing layer of the pre-printed paper needs to be equipped with a high-temperature resistant film, so the cost is greatly increased; the high-temperature resistant film and the hot plate sliding friction will cause scratches High temperature resistant film, making the surface of the carton have a poor drawing and scratching feeling

[0009] The other is that the printing layer of the pre-printed paper faces upward during transmission, and the printing layer moves synchronously with the conveyor belt above the hot plate channel, so it is not easy to scratch. However, the derived problem is that the temperature on the upper side of the hot plate channel of the double-sided machine is not enough, so that The adhesion between the pre-printed paper and the pit paper is poor, and because the conveyor belt has poor ventilation, it affects the drying efficiency of the paste and the quality of the cardboard

Of course, in addition to this, there are still many deficiencies in the current paperboard production line with the printing layer of preprinted paper facing upwards, such as: see pit paper sizing and breaking, problems of deviation correction, problems of preprinted paper waste and breaking, stacking and collecting The problem of low paper effect, etc.

Images