Liner of refrigerating equipment and preparation method thereof

A technology of refrigeration equipment and liner, which is applied in household refrigeration equipment, lighting and heating equipment, flat products, etc., can solve the problems of high scrap rate, long purchase cycle, and inability to mix use of extruded boards and blister, so as to reduce the risk of cracking. , The production management is convenient, the effect of improving the strength

Inactive Publication Date: 2012-08-22
HEFEI MIDEA REFRIGERATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the brittle texture of high-gloss polystyrene, in order to reduce the possibility of cracking, the thickness of the surface layer is usually ≤3%, and the mold has a great influence on it. The glossiness of the obtained box lining is actually very low, or even no gloss, And very uneven, which further increases the possibility of cracking;
[0004] 2. The thickness of the surface layer of extruded board is not easy to control, the scrap rate of extruded board and blister is high, and the qualified rate is low;
[0007] 1. It is not easy to realize functionalization;
[0008] 2. Different grades of ABS special materials provided by different suppliers have differences in color and performance, poor compatibility, and cannot be mixed, which causes inconvenience to production management;
[0009] 3. Only a few companies can produce this kind of ABS special material, all rely on imports, the purchase cycle is long, and the price is high

Method used

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  • Liner of refrigerating equipment and preparation method thereof
  • Liner of refrigerating equipment and preparation method thereof
  • Liner of refrigerating equipment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Door lining of refrigeration equipment (total thickness 1.2mm)

[0034] The material of the surface layer is Chevron natural color HIPS-D6007.

[0035] The base material is Chevron HIPS-D6007, dyed with 5% masterbatch, and 70% crushed material or recycled granulated material is used as the recycled material.

[0036] Mix Chevron HIPS-D6007, color masterbatch and recycled material evenly to obtain the mixed material;

[0037] Chevron natural color HIPS-D6007 is melted with the mixed material and co-extruded through the extruder die to form a semi-finished sheet. By adjusting the speed of the metering pump, the thickness of the surface layer of the HIPS two-layer composite sheet is 0.12mm, and the thickness of the bottom layer is 1.08mm, where the extruder head temperature is 190-240°C, and the melting temperature is 180-240°C;

[0038] The semi-finished sheet is conveyed to the traction roller for traction forming through the cooling roller table conveyor. T...

Embodiment 2

[0041] Example 2: Door liner of refrigeration equipment (total thickness 1.2mm)

[0042] The raw material of the surface layer is TOTAL HIPS-8265.

[0043] The base material is Chevron HIPS-D6007, dyed with 5% masterbatch, and 70% crushed material or recycled granulated material is used as the recycled material.

[0044] Mix Chevron HIPS-D6007 and recycled material evenly to obtain mixed material;

[0045] Melt Stottal HIPS-8265 and the mixed material and co-extrude through the die head of the extruder to form a semi-finished sheet. By adjusting the speed of the metering pump, the thickness of the surface layer of the HIPS two-layer composite sheet is 0.03mm, and the thickness of the bottom layer is 1.17mm. mm, where the extruder head temperature is 190-240°C, and the melting temperature is 180-240°C;

[0046] The semi-finished sheet is conveyed to the traction roller for traction forming through the cooling roller table conveyor. The temperature of the cooling roller table ...

Embodiment 3

[0049] Embodiment 3: tank of refrigeration equipment (total thickness 3.3mm)

[0050] The material of the surface layer is Chevron natural color HIPS-D6007.

[0051] The base material is TOTAL HIPS-8265, dyed with 5% masterbatch, and 50% crushed material or recycled granulated material is used as the return material.

[0052] Mix TOTAL HIPS-8265 and recycled materials evenly to obtain mixed materials;

[0053] Chevron natural color HIPS-D6007 is melted with the mixed material and co-extruded through the extruder die to form a semi-finished sheet. By adjusting the speed of the metering pump, the surface layer thickness of the HIPS two-layer composite sheet is 0.33mm, and the thickness of the bottom layer is 2.97mm, where the extruder head temperature is 190-240°C, and the melting temperature is 180-240°C;

[0054] The semi-finished sheet is conveyed to the traction roller for traction forming through the cooling roller table conveyor. The temperature of the cooling roller tab...

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Abstract

The invention discloses a liner of refrigerating equipment and a preparation method thereof. The liner of the refrigerating equipment is formed by a HIPS (High Impact Polystyrene) two-layer composite board. The HIPS two-layer composite board comprises a surface layer and a bottom layer, wherein the surface layer is formed by surface layer HIPS; the surface layer HIPS is selected from one or more of natural color HIPS, dyed HIPS and modified extrusion-grade HIPS; and the bottom layer comprises natural color extrusion-grade HIPS and return materials. According to the liner of the refrigerating equipment, which is disclosed by the embodiment of the invention, the HIPS two-layer composite board is adopted to form the liner, both the surface layer and the bottom layer of the HIPS two-layer composite board are made of the HIPS materials, various screened HIPS materials have excellent compatibilities and can be mutually blended without obviously influencing the appearance and the processing performance of the board, and thus, the strength of the board can be improved and the cracking risk can be reduced.

Description

technical field [0001] The invention relates to the technical field of preparation of household appliances, and more specifically, the invention relates to an inner container of a refrigeration device and a preparation method thereof. Background technique [0002] High-gloss HIPS composite panels for refrigerators / freezers in the prior art generally have a high-gloss HIPS surface layer, that is, high-gloss polystyrene, which is characterized by good gloss, but has the disadvantages of low strength, brittleness, and no corrosion resistance. In particular, the inner liner of the box is easy to crack, and there are hidden dangers in quality; the bottom layer is HIPS for ordinary extrusion-grade refrigerators, that is, ordinary polystyrene (such as Styron HIPS-1173), and the price is relatively low. This board has the following disadvantages: [0003] 1. Due to the brittle texture of high-gloss polystyrene, in order to reduce the possibility of cracking, the thickness of the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D23/00B29C47/06B29C47/92B29L7/00B29C48/92
Inventor 贾丽曹家汉项灵芝王巍石祥祚
Owner HEFEI MIDEA REFRIGERATOR CO LTD
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