Mobile phone shell spraying-free injection molding method adopting mechanical mold inner cutting

A mobile phone case, in-mold cutting technology, applied in the direction of telephone structure, telephone communication, electrical components, etc., can solve the problems of smooth surface easily scratched, lack of heat resistance of mobile phone case, poor heat resistance of mobile phone case, etc. Achieve the effects of reducing the probability of being scratched, good toughness, and good color uniformity

Inactive Publication Date: 2020-10-23
深圳市博耀科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prior art has the following disadvantages: in the existing spray-free mobile phone case injection molding method, the selected raw materials have low hardness after actual production, so when the mobile phone case is used in the later stage, its smooth surface is easily scratched, And it is not easy to repair, which affects the appearance, and in the existing injection molding production, there is a lack of heat-resistant treatment for mobile phone cases, which makes the mobile phone cases produced by some manufacturers have poor heat resistance and is easy to be scalded by splashing high-temperature liquid

Method used

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  • Mobile phone shell spraying-free injection molding method adopting mechanical mold inner cutting
  • Mobile phone shell spraying-free injection molding method adopting mechanical mold inner cutting

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Embodiment 1

[0027] A spray-free injection molding method for a mobile phone case with mechanical in-mold cutting, comprising the following steps:

[0028] Step (1), preparation of injection molding particles, the raw material is prepared by the following elemental components by weight percentage, including 2.2% aluminum powder, 0.04% carbon black, 0.15% antioxidant, 0.15% dispersant and 0.8% high-gloss toner , hardness modifier 8%, the rest is ABS plastic raw material, the weight percentage sum of each component is 100%, then according to the corresponding ratio, each material is heated and fused, and then the fused material is processed by a screw extruder Carry out granulation treatment to form injection molding granules for use;

[0029] Step (2), drying of the injection molding granules, put the prepared injection molding granules into an oven for drying treatment, set the drying temperature at 70°C to 85°C, dry for 4-5 hours, and control the moisture in the injection molding granules...

Embodiment 2

[0044] A spray-free injection molding method for a mobile phone case with mechanical in-mold cutting, comprising the following steps:

[0045] Step (1), preparation of injection molding particles, the raw material is prepared by the following elemental components by weight percentage, including 1.5% aluminum powder, 0.04% carbon black, 0.15% antioxidant, 0.15% dispersant and 0.8% high-gloss toner , hardness modifier 5%, the rest is ABS plastic raw material, the weight percentage sum of each component is 100%, then according to the corresponding ratio, each material is heated and fused, and then the fused material is melted by a screw extruder Carry out granulation treatment to form injection molding granules for use;

[0046] Step (2), drying of the injection molding granules, put the prepared injection molding granules into an oven for drying treatment, set the drying temperature at 70°C to 85°C, dry for 4-5 hours, and control the moisture in the injection molding granules at...

Embodiment 3

[0061] A spray-free injection molding method for a mobile phone case with mechanical in-mold cutting, comprising the following steps:

[0062] Step (1), preparation of injection molding granules, the raw material is prepared by the following elemental components by weight percentage, including 2.5% aluminum powder, 0.04% carbon black, 0.15% antioxidant, 0.15% dispersant and 0.8% high-gloss toner , hardness modifier 10%, the rest is ABS plastic raw material, the weight percentage sum of each component is 100%, then according to the corresponding ratio, each material is heated and fused, and then the fused material is melted by a screw extruder Carry out granulation treatment to form injection molding granules for use;

[0063] Step (2), drying of the injection molding granules, put the prepared injection molding granules into an oven for drying treatment, set the drying temperature at 70°C to 85°C, dry for 4-5 hours, and control the moisture in the injection molding granules at...

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Abstract

The invention discloses mobile phone shell spraying-free injection molding method adopting mechanical mold inner cutting. The method is characterized in that a raw material is formed by preparing following elements comprising, by weight percentage, 1.3%-2.5% of aluminum powder, 0.04% of carbon black, 0.15% of anti-oxygen, 0.15% of dispersing agent, 0.8% of high-light toner, 4%-10% of hardness modifying agent and the balance ABS plastic raw material, the total weight percentage of all the components is 100%, preparing is carried out according to the corresponding proportion, all the materials are heated and fused, a spiral extruding machine is used for carrying out pelleting treatment on the fused materials, and thus injection molding particles are formed for standby use. According to the method, by means of reasonable matching and mixing of the aluminum powder, the carbon black and glass fiber, produced mobile phone shells have good metal texture and good color and luster uniformity, the phenomena of reducing sink marks, flow marks and weld lines can be effectively avoided, and by using the glass fiber reasonably, the produced mobile phone shells have high hardness.

Description

technical field [0001] The invention relates to the technical field of mobile phone case production, in particular to a spray-free injection molding method for a mobile phone case with mechanical in-mold cutting. Background technique [0002] A mobile phone case is an ornament that protects or decorates the appearance of a mobile phone. According to the increase of mobile phone brands and functions, mobile phone cases are also diversified. According to the texture of mobile phone cases, they can be divided into leather, silicone, cloth, hard plastic, soft plastic, etc. Mobile phone cases are not only used as decorations to make mobile phones a landscape, but also can prevent Falling, waterproof and shockproof, while spray-free plastics are melted and blended into plastic raw materials (PP, ABS, AS, PC, etc.) by adding metal powder, pearl powder, ceramic powder, high-gloss toner, etc. , so that it has its own special color effect. For consumers, spray-free products are more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00B29C71/02H04M1/18C08L55/02C08K13/04C08K3/08C08K3/04C08K7/14
CPCB29C45/0053B29C71/02B29C2045/0058B29C2045/0077B29C2071/022C08K3/04C08K3/08C08K7/14C08K13/04C08K2003/0812H04M1/185C08L55/02
Inventor 沈丽修立煌沈强王文玲
Owner 深圳市博耀科技集团有限公司
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