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Forming method of inner container of refrigerator

A refrigerator liner and molding method technology, which is applied in the field of refrigerator liners, can solve the problems affecting the service life of refrigerators, cracking, warping, etc., and achieve the effects of improving molding efficiency and quality, reducing production costs, and good rigidity

Inactive Publication Date: 2019-03-01
滁州雨博机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of actual use, the refrigerator liner formed by this method often warps and cracks due to the relatively concentrated residual stress of the material, which seriously affects the service life of the refrigerator.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for forming a refrigerator liner, comprising the following steps:

[0021] S1. Mixing of raw materials: Add the prepared raw materials into the mixer in proportion, the stirring speed is 1500r / min, and the stirring time is 20min to obtain a mixture. The raw materials include the following raw materials in parts by weight: 480 parts of polystyrene, 280 parts of polychloroprene ene, 4 parts of antioxidant, 65 parts of toughening agent, 0.1 part of titanium dioxide, 3 parts of lubricant, 2 parts of dispersant;

[0022] S2. Extrusion molding: preheat the mixture obtained in step S1 to 60°C, and then add the preheated material into a single-screw extruder, the temperature of the barrel of the single-screw extruder is 160°C;

[0023] S3. Cooling and setting: Cool the plate obtained in S2 by compressed air or spraying water mist. The cooling time is 40 minutes for cooling and setting, and the cooling temperature is 25°C. After cooling, the plate is inspected before st...

Embodiment 2

[0028] A method for forming a refrigerator liner, comprising the following steps:

[0029] S1. Mixing of raw materials: Add the prepared raw materials into the mixer in proportion, the stirring speed is 1600r / min, and the stirring time is 25min to obtain a mixture. The raw materials include the following raw materials in parts by weight: 520 parts of polystyrene, 300 parts of polychloroprene ene, 8 parts of antioxidant, 75 parts of toughening agent, 1 part of titanium dioxide, 4 parts of lubricant, 3 parts of dispersant;

[0030] S2. Extrusion molding: preheat the mixture obtained in step S1 to 63°C, and then add the preheated material into a single-screw extruder, and the barrel temperature of the single-screw extruder is 170°C;

[0031] S3. Cooling and setting: Cool the plate obtained in S2 with compressed air or spray water mist. The cooling time is 50 minutes for cooling and shaping, and the cooling temperature is 30°C. After cooling, the plate is inspected before storage....

Embodiment 3

[0036] A method for forming a refrigerator liner, comprising the following steps:

[0037] S1. Mixing of raw materials: Add the prepared raw materials into the mixer in proportion, the stirring speed is 1700r / min, and the stirring time is 26min to obtain a mixture. The raw materials include the following raw materials in parts by weight: 540 parts of polystyrene, 320 parts of polychloroprene Alkene, 10 parts of antioxidant, 80 parts of toughening agent, 1.6 parts of titanium dioxide, 5 parts of lubricant, 4 parts of dispersant;

[0038] S2. Extrusion molding: preheat the mixture obtained in step S1 to 65°C, and then add the preheated material into a single-screw extruder, the temperature of the barrel of the single-screw extruder is 180°C;

[0039] S3. Cooling and setting: Cool the plate obtained in S2 by compressed air or spraying water mist. The cooling time is 50 minutes for cooling and shaping, and the cooling temperature is 35°C. After cooling, the plate is inspected befo...

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PUM

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Abstract

The invention discloses a forming method of an inner container of a refrigerator. The forming method comprises the following steps: S1, raw material mixing; S2, extrusion forming; S3, cooling and setting; S4, blister forming; S5, trimming treatment; S6, inspection and storage in warehouse. According to the forming method disclosed by the invention, raw materials are good in toughness, and invisible cracking and cracking phenomena of the inner container of the refrigerator during the blister forming can be avoided; the cooling time is sufficient, demolding is convenient, the quality of a product is good, mixed materials are thermal treatment before extrusion forming, so that the forming efficiency and the quality of the product can be increased; inspection of the product before the productis stored in the warehouse is strict, and the quality and the accuracy of a qualified product are ensured.

Description

technical field [0001] The invention relates to the technical field of refrigerator liners, in particular to a method for forming refrigerator liners. Background technique [0002] Health, safety, and sanitation are currently one of the most concerned topics for consumers in the market. Refrigerators, as household appliances for daily storage of fresh food, have higher requirements for health and safety indicators. [0003] In the existing refrigerator production process, the vacuum suction molding mold is used to make the semi-finished product of the refrigerator liner. The production process is mainly to blow the plastic through heating, and then extract the air in the mold cavity to form a vacuum, so that the sheet material is adsorbed in the refrigerator. The surface of the mold body, and then through hot pressing, cooling, forming, blowing, demoulding to obtain the required liner. In the process of actual use, the refrigerator liner formed by this method often warps an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L11/00C08K3/22B29C69/00
CPCC08L25/06B29C69/00C08K2003/2241C08L11/00C08K3/22
Inventor 熊文超牛春雨
Owner 滁州雨博机电科技有限公司