Treatment method on a surface of a plastic flowerpot

Abstract

A treatment method on a surface of a plastic flowerpot includes: directly spraying an undercoat on the surface of the plastic flowerpot without pretreatment; or, during a production of the plastic flowerpot, adding conductive carbon black to a master batch, without pretreatment or spraying the undercoat; spraying a conductive liquid; spraying plastic powder of a color through a high-pressure electrostatic spray gun, and thermally curing; and naturally cooling.

Claims

1. A treatment method on the surface of a plastic flowerpot, comprising: a) directly spraying an undercoat on the surface of the plastic flowerpot without pretreatment or, during a production of the plastic flowerpot, adding conductive carbon black to a master batch without pretreatment or spraying the undercoat; b) spraying a conductive liquid; c) spraying a colored plastic powder through an electrostatic spray gun; d) thermally curing the colored plastic powder; and e) cooling, wherein the plastic powder comprises the following chemical components: 56 to 66 parts of polyester resin; 2 to 8 parts of a curing agent; 2 to 12 parts of an auxiliary agent, a plasticizer, a stabilizer, and a lubricant; and 20 to 35 parts of a pigment and a filler, wherein the total amount of the chemical components of the plastic powder is 100 percent.

2. The treatment method of claim 1, wherein the steps a, b, and c are carried out on an automatic production line, the automatic production line having an undercoat spraying section, a conductive liquid spraying section, a plastic powder spraying section and a thermal curing section arranged sequentially on the automatic production line.

3. The treatment method of claim 1, wherein the thermal curing described in the step c is conveying the plastic flowerpot through a drying room at 1255 C. for 15 to 25 minutes.

4. The treatment method of claim 1, wherein the material for the plastic flowerpot is PP, PE, ABS, PPR, PA, or other synthetic material having a plastic base stock.

5. The treatment method of claim 1, wherein the undercoat comprises the following chemical components: 60 to 70 parts of epoxy resin, 10 to 15 parts of butyl acetate, 6 to 10 parts of xylene and 10 to 20 parts of chlorinated polyolefin, wherein the total amount of the chemical components of the undercoat is 100 percent.

6. The treatment method of claim 1, wherein the conductive liquid comprises the following chemical components: 10 to 50 parts of polyaniline, 25 to 35 parts of ITO and 20 to 30 parts of nano-silver, wherein the total amount of the chemical components of the conductive liquid is 100 percent.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a process flow diagram of a treatment method on a surface of a plastic flowerpot of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

(2) The present invention will be further described below in detail by embodiments with reference to the accompanying drawings.

Embodiment 1

(3) As shown in FIG. 1, the treatment method on a surface of a plastic flowerpot comprises: a) directly spraying an undercoat on the surface of the plastic flowerpot without pretreatment, wherein the undercoat comprises the following chemical components: 65% of epoxy resin, 12% of butyl acetate, 8% of xylene and 15% of chlorinate polyolefin, wherein the total amount of the chemical components of the undercoat is 100 percentages. b) spraying a conductive liquid, wherein the conductive liquid comprises the following chemical components: 45% of polyaniline, 30% of ITO and 25% of nano-silver (in mass percentage). c) spraying plastic powder of a required color through a high-pressure electrostatic spray gun, and thermally curing, wherein the plastic powder comprises the following chemical components: 61% of polyester resin, 4% of a curing agent, 7% of an auxiliary agent, a plasticizer, a stabilizer and a lubricant, and 28% of a pigment and a filler (in mass percentage), and thermal curing is conveying the plastic flowerpot through a drying room at 1255 C. for 15 to 25 minutes. d) naturally cooling.

(4) The steps a, b, and c are carried out on an automatic production line A, the automatic production line has an undercoat spraying section 1, a conductive liquid spraying section 2, a plastic powder spraying section 3 and a thermal curing section 4 arranged sequentially on the automatic production line.

(5) The undercoat in the step a, the conductive liquid in the step b and the plastic powder in the step c are green environmental-friendly materials.

(6) Additionally, the material of plastic flowerpot is PP, or PE, or ABS, or PPR, or PA or synthetic material using various plastics as base stock.

(7) During production, the plastic flowerpot is placed on the automatic production line A, and is sequentially sprayed with the undercoat in the undercoat spraying section 1, the conductive liquid in the conductive liquid spraying section 2, the plastic powder of a required color in the plastic powder spray section 3, conveyed through the drying room at 125 C. for 20 minutes in the thermal curing section 4 and finally naturally cooled, so that the treated surface with the required color is obtained.

Embodiment 2

(8) A treatment method on a surface of a plastic flowerpot comprises: a) during a production of the plastic flowerpot, adding a proper amount of conductive carbon black to a master batch, without pretreatment or spraying the undercoat; b) spraying a conductive liquid on the surface of the flowerpot; c) spraying plastic powder of a required color, and thermally curing; and d) naturally cooling.

(9) Other situations are similar to those in Embodiment 1.

(10) After this production process is completed, the firmness (adhesion) of the plastic powder on the surface of the plastic flowerpot is up to I-class standard (100% qualified after being tested by a Cross-Cut tester); the surface of the plastic flowerpot passes through 2H standard test of hardness abrasion; and, the surface of the plastic flowerpot passes through 40 CM positive impact test of impact resistance.

(11) Since the complicated pretreatment process is not required in the present invention, the process is greatly simplified, the production cycle is shortened, the production efficiency is improved, and the production cost is reduced. Moreover, the production process is energy-saving and environmental-friendly, and feasible to be applied to large-area and large-scale production.

(12) The protection scope of the present invention is not limited to each embodiment described in this description. Any changes and replacements made on the basis of the scope of the present invention patent and of the description shall be included in the scope of the present invention patent.