阅读说明：本技术 一种幻彩logo的制作方法 (Method for manufacturing colorful LOGO ) 是由 吴建晓 于 2019-11-05 设计创作，主要内容包括：一种幻彩LOGO的制作方法,包括：步骤1、通过胶印工艺在手机后盖上印刷背景油墨,背景油墨干燥后形成手机后盖的底色层；步骤2、通过转印工艺在手机后盖上印刷LOGO油墨,LOGO油墨干燥后形成幻彩LOGO；步骤3、将手机后盖放置在电镀装置中,对电镀装置中的电镀液进行通电,通过电镀工艺在手机后盖上镀一层铟膜层；步骤4、对铟膜层施加压力,使铟膜层压紧。上述制作方法可以在手机后盖上制作出精美的幻彩LOGO,使手机后盖更加美观,观赏性强,并且在油墨上形成电镀铟膜层,提高抗腐蚀能力,大大延长了油墨褪色的寿命,同时对电镀膜层进行压紧,可以防止电镀膜层脱落。(A method for manufacturing a magic LOGO comprises the following steps: step 1, printing background ink on the rear cover of the mobile phone through an offset printing process, and forming a bottom color layer of the rear cover of the mobile phone after the background ink is dried; step 2, printing LOGO ink on the rear cover of the mobile phone through a transfer printing process, and drying the LOGO ink to form a colorful LOGO; step 3, placing the rear cover of the mobile phone in an electroplating device, electrifying electroplating liquid in the electroplating device, and plating an indium film layer on the rear cover of the mobile phone through an electroplating process; and 4, applying pressure to the indium film layer to compress the indium film layer. By the manufacturing method, the exquisite colorful LOGO can be manufactured on the rear cover of the mobile phone, so that the rear cover of the mobile phone is more attractive and has strong ornamental value, the indium electroplated film layer is formed on the printing ink, the corrosion resistance is improved, the fading service life of the printing ink is greatly prolonged, and meanwhile, the electroplated film layer is compressed to prevent the electroplated film layer from falling off.)

1. A method for manufacturing a colorful LOGO is characterized in that: the manufacturing method comprises the following steps:

step 1, printing background ink on the rear cover of the mobile phone through an offset printing process, and forming a bottom color layer of the rear cover of the mobile phone after the background ink is dried;

step 2, printing LOGO ink on the rear cover of the mobile phone through a transfer printing process, and drying the LOGO ink to form a colorful LOGO;

step 3, placing the rear cover of the mobile phone in an electroplating device, electrifying electroplating liquid in the electroplating device, and plating an indium film layer on the rear cover of the mobile phone through an electroplating process;

and 4, applying pressure to the indium film layer on the rear cover of the mobile phone to tightly press the indium film layer.

2. The method of making a fantasy LOGO according to claim 1, wherein: the offset printing process of the step 1 specifically comprises the following steps:

step 1.1, forming a pattern on the rear cover of the mobile phone by printing ground color ink, wherein the printing background of the rear cover of the mobile phone is dark;

step 1.2, printing pearl grains needing light display on the pattern printed in the step 1.1 by using offset printing pearl ink;

and step 1.3, rolling and coating a full-plate covering gloss oil on the rear cover of the mobile phone by adopting a gravure seat.

3. The method of making a fantasy LOGO according to claim 2, wherein: the printing thickness of the offset pearlescent ink accounts for 20% of the total ink printing thickness.

4. The method of making a fantasy LOGO according to claim 1, wherein: the transfer printing process of the step 2 specifically comprises the following steps:

step 2.1, coating gloss oil on a printing pattern (namely LOGO) of a transfer head;

2.2, attaching the surface of the upper layer of the transfer printing head, which contains the printing pattern, to the rear cover of the mobile phone;

2.3, transferring the gloss oil of the printed pattern to a rear cover of the mobile phone by the heating transfer head;

and 2.4, removing the transfer printing head.

5. The method of making a fantasy LOGO according to claim 4, wherein: in said step 2.1, the gloss oil comprises the following components: 10% of water, 25% of surfactant, 5% of auxiliary component, 15% of filler and 45% of organic solvent.

6. The method of making a fantasy LOGO according to claim 4, wherein: the auxiliary component is one or more of foaming agent, nut oil, urea aldehyde, iodopropynyl butyl carbamate, isothiazolinone and sodium benzoate.

7. The method of making a fantasy LOGO according to claim 6, wherein: in the step 2.3, the heating temperature is 50-60 ℃.

8. The method of making a fantasy LOGO according to claim 1, wherein: in the step 3, the electroplating time is 2-6 min, the pH of the indium plating solution is 2.0-2.2, the electroplating temperature is 30-40 ℃, the current density is 1.1-2.2A/dm 2, the thickness of the indium film coating is 1-20 μm, and the baume degree is 17.0-19.5 DEG Be.

9. The method of making a fantasy LOGO according to claim 1, wherein: in the step 4, the pressure applied to the indium film layer is 0.001-0.0015 mPa.

Technical Field

The invention relates to a method for manufacturing a colorful LOGO, in particular to a method for manufacturing a colorful LOGO on a rear cover of a mobile phone.

Background

In order to make the mobile phone housing more beautiful, some mobile phones are printed with colorful LOGO (icon) on the rear cover. Mobile phone manufacturers usually adopt offset printing process and transfer printing process to form multicolor LOGO on the mobile phone rear cover, wherein, offset printing is a printing mode of transferring the pictures and texts on the printing plate to the printing stock by means of a cylinder, transfer printing is a printing mode of transferring the exquisite patterns on the transfer printing head to the surface of the product, and the formed ink layer and the surface of the product are dissolved into a whole. The base color of the mobile phone rear cover can be formed by the ink through an offset printing process, and the multicolor LOGO is formed by the ink through a transfer printing process.

However, the inks of fantasy LOGO (i.e., gloss oil) have poor corrosion resistance and often fade after the back cover of the phone has been used for a period of time.

Disclosure of Invention

The technical scheme of the invention is to solve the above problems and provide a method for manufacturing a magic LOGO, which comprises the following steps:

step 1, printing background ink on the rear cover of the mobile phone through an offset printing process, and forming a bottom color layer of the rear cover of the mobile phone after the background ink is dried;

step 2, printing LOGO ink on the rear cover of the mobile phone through a transfer printing process, and drying the LOGO ink to form a colorful LOGO;

step 3, placing the rear cover of the mobile phone in an electroplating device, electrifying electroplating liquid in the electroplating device, and plating an indium film layer on the rear cover of the mobile phone through an electroplating process;

and 4, applying pressure to the indium film layer on the rear cover of the mobile phone to tightly press the indium film layer.

Further, the offset printing process of the step 1 specifically comprises the following steps:

step 1.1, forming a pattern on the rear cover of the mobile phone by printing ground color ink, wherein the printing background of the rear cover of the mobile phone is dark;

step 1.2, printing pearl grains needing light display on the pattern printed in the step 1.1 by using offset printing pearl ink;

and step 1.3, rolling and coating a full-plate covering gloss oil on the rear cover of the mobile phone by adopting a gravure seat.

Further, the print thickness of the offset pearlescent ink accounts for 20% of the overall ink print thickness.

Further, the transfer process of step 2 specifically includes the following steps:

step 2.1, coating gloss oil on a printing pattern (namely LOGO) of a transfer head;

2.2, attaching the surface of the upper layer of the transfer printing head, which contains the printing pattern, to the rear cover of the mobile phone;

2.3, transferring the gloss oil of the printed pattern to a rear cover of the mobile phone by the heating transfer head;

and 2.4, removing the transfer printing head.

Further, in step 2.1, the gloss oil comprises the following components: 10% of water, 25% of surfactant, 5% of auxiliary component, 15% of filler and 45% of organic solvent.

Further, the auxiliary component is one or more of foaming agent, nut oil, urea aldehyde, iodopropynyl butyl carbamate, isothiazolinone and sodium benzoate.

Further, in the step 2.3, the heating temperature is 50-60 ℃.

Further, in the step 3, the electroplating time is 2-6 min, the pH of the indium plating solution is 2.0-2.2, the electroplating temperature is 30-40 ℃, the current density is 1.1-2.2A/dm 2, the thickness of the indium film plating layer is 1-20 μm, and the baume degree is 17.0-19.5 DEG Be.

Further, in the step 4, the pressure applied to the indium film layer is 0.001 to 0.0015 mPa.

After the technical scheme is adopted, the invention has the effects that: by the manufacturing method, the exquisite colorful LOGO can be manufactured on the rear cover of the mobile phone, so that the rear cover of the mobile phone is more attractive and has strong ornamental value, the indium electroplated film layer is formed on the printing ink, the corrosion resistance is improved, the fading time of the printing ink is greatly delayed, and meanwhile, the electroplated film layer is compressed to prevent the electroplated film layer from falling off.

Detailed Description

It is specifically noted that the terms "first", "second" and "third" in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative positional relationship between the components, the movement, and the like in a certain posture, and if the certain posture is changed, the directional indicator is changed accordingly.

The technical solution of the present invention is further described by the following examples:

the invention provides a method for manufacturing a colorful LOGO, which comprises the following steps:

step 1, offset printing: printing background ink on the rear cover of the mobile phone by an offset printing process, and forming a bottom color layer of the rear cover of the mobile phone after the background ink is dried;

step 2, transfer printing: printing LOGO ink on the rear cover of the mobile phone through a transfer printing process, and drying the LOGO ink to form a colorful LOGO;

step 3, electroplating: placing the rear cover of the mobile phone in an electroplating device, electrifying electroplating liquid in the electroplating device, and plating an indium film layer on the rear cover of the mobile phone through an electroplating process;

step 4, pressurization: and applying pressure to the indium film layer on the rear cover of the mobile phone to compress the indium film layer.

By the manufacturing method, the exquisite colorful LOGO can be manufactured on the rear cover of the mobile phone, so that the rear cover of the mobile phone is more attractive and has strong ornamental value, the indium electroplated film layer is formed on the printing ink, the corrosion resistance is improved, the fading time of the printing ink is greatly delayed, and meanwhile, the electroplated film layer is compressed to prevent the electroplated film layer from falling off.

The offset printing process of the step 1 specifically comprises the following steps:

step 1.1, forming a pattern on the rear cover of the mobile phone by printing ground color ink, wherein the printing background of the rear cover of the mobile phone is dark;

step 1.2, printing pearl grains needing light display on the pattern printed in the step 1.1 by using offset printing pearl ink;

and step 1.3, rolling and coating a full-plate covering gloss oil on the rear cover of the mobile phone by adopting a gravure seat.

Specifically, the print thickness of the offset pearlescent ink accounts for 20% of the overall ink print thickness. The total ink printing thickness is the sum of the printing thickness of the ground color, the printing thickness of the offset pearlescent ink and the printing thickness of the gloss oil.

The offset printing process utilizes the matching of the deep ink position and the pearl ink, can display the reflection effect of the pearl ink by enhancing natural light or flashlight light, displays better lower recessive effect of natural light or flashlight light, needs to print the pearl ink by taking metal reflection or the deep ink position as a background in a set recessive pattern, and combines the transparent reflection effect of high-gloss oil, thereby obviously increasing the pattern display effect of strong and weak light reflection.

The transfer printing process in the step 2 specifically comprises the following steps:

step 2.1, coating gloss oil on a printing pattern (namely LOGO) of a transfer head;

2.2, attaching the surface of the upper layer of the transfer printing head, which contains the printing pattern, to the rear cover of the mobile phone;

2.3, transferring the gloss oil of the printed pattern to a rear cover of the mobile phone by the heating transfer head;

and 2.4, removing the transfer printing head.

Specifically, in the step 2.3, the heating temperature is 50-60 ℃.

Specifically, in step 2.1, the gloss oil comprises the following components: 10% of water, 25% of surfactant, 5% of auxiliary component, 15% of filler and 45% of organic solvent.

More specifically, the auxiliary component is one or more of a foaming agent, nut oil, urea aldehyde, iodopropynyl butyl carbamate, isothiazolinone and sodium benzoate.

By applying the thermal transfer printing process to the printing of the rear cover of the stone mobile phone, the product yield is improved, and meanwhile, the attractive effect can be realized.

Wherein, in the step 3, the electroplating time is 2-6 min, the pH of the indium plating solution is 2.0-2.2, the electroplating temperature is 30-40 ℃, and the current density is 1.1-2.2A/dm²The thickness of the indium film coating layer is 1 to 20 μm, and the baume degree is 17.0 to 19.5 DEG Be.

In the step 4, the pressure applied to the indium film layer is 0.001-0.0015 mPa.

The above-described embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles of the invention described in the claims should be included in the claims.