An upper and lower hot air drying oven for single-sided printing or coating

Abstract

The invention discloses an upper and lower hot air type drying box used for single-sided printing or coating. The invention aims to solve the defects in the prior art that the drying time is long when single-sided air supply is carried out on the base material oil ink or coating layer top surface to affect the drying efficiency and transmission speed, or a drying oven is long, and an operation field is big. The technical scheme has the key point that the upper and lower hot air type drying box is composed of a box shell, a plurality of parallel base material backup rolls in the box shell, a plurality of upper hot air supply pipes above the base material backup rolls, an upper hot air equalizing chamber, an upper hot air transmission path and an upper air return chamber, wherein the slice base material enters from a feed port, is supported on the base material backup rolls to operate and is discharged from a discharge hole; and each upper hot air supply pipe is provided with an air supply outlet parallel to the top surface of the slice base material, wherein the top surface is provided with a printing or coating layer. The upper and lower hot air type drying box is characterized inthat a plurality of lower hot air supply pipes, a lower hot air equalizing chamber, a lower hot wind transmission path and a lower air return chamber are arranged below the base material backup rollsby the box shell; and each lower hot air supply pipe is provided with an air supply outlet parallel to the back surface of the slice base material, and the back surface is provided with a printing orcoating layer.

Description

technical field [0001] The invention belongs to supporting equipment for printing or coating technology, in particular to an upper and lower hot air drying box used for drying ink or coating layers on sheet substrates when performing single-sided printing or coating operations on rolled sheet substrates. Background technique [0002] Existing drying boxes for printing or coating at present can be divided into drying boxes for single-sided printing or coating and drying boxes for double-sided printing or coating. The drying box for single-sided printing or coating generally performs one-way radiation or one-way hot air drying on the printing or coating surface; The surface is dried by two-way radiation or one-way blowing hot air, which is basically the same as the working principle and drying effect of a drying box for single-sided printing or coating. [0003] At present, there is a single-sided printing or coating drying box close to the structure, such as a drying box for...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the existing one-sided printing or coating drying box with a close structure to perform one-way air supply and drying on the top surface of the ink or coating layer attached to the substrate, the drying time must be relatively long, which affects the drying of the substrate. Efficiency and transmission speed, or the drying box must be lengthened, and the defect that the operating site must be larger, the purpose of the present invention is to provide an improved single-sided printing or coating with up and down hot air drying box, which can overcome the existing technical flaws

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