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Coating machine and coating method thereof

Inactive Publication Date: 2018-08-23
LAU CHI WAH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a coating machine and method for cardboard that is simple and highly automated. The machine has two rollers that can wax the edges of the cardboard while the wax is dispensed evenly over the surface and edges, ensuring that the cardboard is waterproof as a whole. This invention is easy to perform and highly efficient in waxing entire sheets of cardboard.

Problems solved by technology

However, the existing coating machines can effectively coat only the surface, but not the edges, of cardboard with wax.
The resulting cardboard boxes, therefore, are flawed in that they are permeable to water and hence prone to break when wet.

Method used

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  • Coating machine and coating method thereof
  • Coating machine and coating method thereof
  • Coating machine and coating method thereof

Examples

Experimental program
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embodiment 1

[0035]As shown in FIG. 1, the present invention provides a coating machine that includes a cardboard conveying mechanism 1 and a wax dispenser 2. The cardboard conveying mechanism 1 has a front end 11 and a back end 12, wherein the front end 11 is lower than the back end 12. The wax dispenser 2 is provided above the back end 12, and a wax dispensing roller 3 is provided on each of two lateral sides of the wax dispenser 2.

[0036]More specifically, the cardboard conveying mechanism 1 includes a conveyor body 4 and a plurality of pressure rollers 5. The conveyor body 4 has a front-end conveying wheel 41, a back-end conveying wheel 42, and a conveyor belt 43 looped around the front-end conveying wheel 41 and the back-end conveying wheel 42. Cardboard 10 can be placed on the conveyor belt 43 in order to be coated. The cardboard 10 may be a single- or multi-ply composite cardboard having a thickness ranging from 0.3 mm to 9 mm; the present invention has no limitation in this regard. The pr...

embodiment 2

[0045]With continued reference to FIG. 1 and FIG. 2, the present invention further provides the coating method of a coating machine. The structures, working principle, and advantageous effects of the coating machine in embodiment 2 are identical to those of the coating machine in embodiment 1 and hence will be not be described repeatedly. The coating method of the coating machine includes the following steps:

[0046]a) Place the cardboard 10 on the cardboard conveying mechanism 1, with the wax dispenser 2 in vertical alignment with the forward edge of the cardboard 10;

[0047]b) Turn on the wax dispenser 2 and the cardboard conveying mechanism 1 so that the wax dispenser 2 dispenses wax to the forward edge and the upper surface of the cardboard 10; and

[0048]c) Wax the two lateral edges of the cardboard 10 with the wax dispensing rollers 3 on the two lateral sides of the wax dispenser 2 respectively while the cardboard 10 is moved from the front end 11 of the cardboard conveying mechanis...

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Abstract

A coating machine and its coating method are provided. The coating machine includes: a cardboard conveying mechanism (1) with a front end (11) and a back end (12) higher than the front end (11); and a wax dispenser (2) provided above the back end (12) and provided with a wax dispensing roller (3) on each of two lateral sides of the wax dispenser (2). The coating machine and its coating method are designed to wax not only the surface, but also the edges, of cardboard (10) so that waterproofness of the entire cardboard (10) is ensured. The coating machine is structurally simple and highly automated, and the coating method is easy to perform and highly automated.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a coating machine and a coating method thereof. More particularly, the invention relates to a coating machine and method for use in the manufacture of cardboard boxes to coat heat-insulating cardboard with wax.BACKGROUND OF THE INVENTION[0002]Nowadays, marine products such as seafood are typically transported in cardboard boxes. As liquids are sure to be found on the surface of seafood, it is required that cardboard boxes for storing marine products be water-resistant to some extent so that boxed marine products can be transported over long distances.[0003]To waterproof a cardboard box, it is common practice to coat each of its cardboard components with liquid wax, which forms a wax layer capable of isolating the surface liquids of marine products from the cardboard itself. However, the existing coating machines can effectively coat only the surface, but not the edges, of cardboard with wax. The resulting cardboard boxes, ...

Claims

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Application Information

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IPC IPC(8): D21H23/58D21H19/18D21H21/16
CPCD21H23/58D21H19/18D21H21/16D21H23/56
Inventor LAU, CHI-WAH
Owner LAU CHI WAH
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