Refrigerator door seal

A technology for refrigerator doors and seals, which is applied to lighting and heating equipment, household appliances, household refrigeration devices, etc., can solve problems such as difficult extrusion process and extrusion machine cannot operate normally, and achieve light weight effect

Inactive Publication Date: 2019-06-25
AQUA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The magnetic filler in Patent Document 1 has the following problems: when performing special-shaped extrusion, glass hollow microspheres mixed with vinyl chloride resin are sandwiched in the gap to block it, so that the extruder cannot operate normally, and the extrusion process is difficult to proceed smoothly. conduct

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0057] (manufacturing of refrigerator door seals)

[0058] The following materials were prepared as components of the foamed vinyl chloride resin composition.

[0059] [Table 1]

[0060] material name

Vinyl chloride resin (average degree of polymerization is about 1300)

Polyester plasticizer (viscosity 2400-6000 (25°C, MPa·s), specific gravity 1.050-1.150 (20 / 20°C))

Inorganic filler (calcium carbonate)

Foaming agent (azodicarbonamide)

Acrylic acid processing aid (number average molecular weight is about 3 million)

[0061] Above-mentioned material is packed into extruder, makes it melt under the condition of table 2, and makes with figure 1 The mold of the shape corresponding to the cross-sectional shape shown is passed through, and then the extruded molded product is cooled to obtain the refrigerator door seal of the present invention.

[0062] figure 2 It is an enlarged photograph showing a section of the refrigerator door...

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PUM

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Abstract

The invention provides a refrigerator door seal which is light in weight and less in heat leakage amount. The refrigerator door seal comprises a mounting portion mounted to a peripheral portion of a refrigerator door, a magnet holding portion accommodating a magnet attracted around an opening portion of a storage chamber of a refrigerator main body and a thin-walled bag portion connecting the mounting portion and the magnet holding portion in a telescopic free manner. The refrigerator door seal comprises a foamed body of a foamed vinyl chloride resin composition.

Description

technical field [0001] The invention relates to a refrigerator door seal, in particular to a refrigerator door seal with less heat leakage. Background technique [0002] In recent years, there has been a strong demand for refrigerated and refrigerated equipment such as refrigerators and vending machines to reduce energy consumption, and efforts have been made to improve cooling efficiency. One of the major causes of impeding cooling efficiency in refrigerators is the phenomenon that heat enters from the gap between the main body storage compartment and the refrigerator door. In general, a seal is provided on the periphery of the refrigerator door, and heat entry is suppressed by closing the gap between the seal and the edge of the opening of the storage compartment of the main body of the refrigerator. [0003] figure 1 It is cross-sectional view showing basic shape of seal of refrigerator. A refrigerator door 1 , a seal 2 attached to the refrigerator door, and a refriger...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D23/02
CPCF25D23/087
Inventor 上田勉平田隆一束建强
Owner AQUA CO LTD
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