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Polyvinyl chloride (PVC) two-layer composite board used for refrigeration equipment

A technology for refrigeration equipment and composite panels, which is applied in layered products, synthetic resin layered products, chemical instruments and methods, etc., can solve problems such as poor products, foaming agent corrosion, and single appearance, and achieve good flame retardancy and Effects of self-extinguishing, improved tensile properties, reduced risk of cracking

Inactive Publication Date: 2013-06-19
HEFEI MIDEA REFRIGERATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. During the processing and bending process of PS sheet, the qualified rate is low;
[0004] 2. The corners of refrigerators with PS backplanes are prone to cracking in low-temperature environments;
[0005] 3. The PS backboard is easily corroded by the foaming agent in the insulation layer of the refrigerator / freezer and is easy to crack;
[0006] 4. The PS backplane does not have flame retardancy. When a fire occurs, it will even support combustion, causing greater safety accidents;
[0007] 5. The appearance is relatively simple and cannot meet the diverse market needs;
[0011] 2. The hollow structure has poor strength and cannot meet the structural requirements of large-volume products
[0012] 3. When the PP hollow board is used as the backboard of the refrigerator, it is easily denatured after foaming, resulting in defective products
[0013] 4. The appearance is single, unable to meet the diverse market needs

Method used

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  • Polyvinyl chloride (PVC) two-layer composite board used for refrigeration equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: A PVC two-layer composite board for refrigeration equipment according to the embodiment of the present invention (total thickness: 1.0mm)

[0048] PVC panel 200 is made of PVC film imitating metal wire drawing effect.

[0049] The PVC substrate 100 is made of modified PVC.

[0050] Choose 100 parts by weight of low molecular weight PVC-SG5 (Formosa Plastics S-60), 4 parts by weight of calcium / zinc composite stabilizer, 2.5 parts by weight of CPE, 3 parts by weight of ACR, 1 part by weight of stearic acid, 1 The barium stearate of parts by weight, the activated calcium carbonate of 20 parts by weight, and an appropriate amount of toner are mixed. Extruded by a twin-screw extruder, and rolled to form a semi-finished sheet, the thickness of the PVC substrate 100 is 0.95mm by adjusting the gap between the rollers in the calendering equipment, and a PVC panel 200 with a thickness of 0.05mm and an imitation metal wire drawing effect is selected.

[0051] The a...

Embodiment 2

[0052] Example 2: Another PVC two-layer composite board for refrigeration equipment according to the embodiment of the present invention (total thickness: 1.2mm)

[0053] PVC panel 200 selects the PVC film of imitating stainless steel effect for use.

[0054] The PVC substrate 100 is made of modified PVC.

[0055] Choose 100 parts by weight of low molecular weight PVC-SG5 (Qilu S-700), 4 parts by weight of calcium / zinc composite stabilizer, 2.5 parts by weight of CPE, 2.5 parts by weight of ACR, 0.8 parts by weight of stearic acid, 1 weight part The barium stearate of 20 parts, the activated calcium carbonate of 20 parts by weight, and an appropriate amount of toner are mixed. Extruded by a twin-screw extruder, and rolled to form a semi-finished plate, the thickness of the PVC substrate 100 is 1.1 mm by adjusting the gap between the rollers in the calendering equipment, and a PVC panel 200 with a thickness of 0.1 mm and an effect of imitating stainless steel is selected.

[...

Embodiment 3

[0057] Embodiment 3: Another PVC two-layer composite board for refrigeration equipment according to the embodiment of the present invention (total thickness: 0.8mm)

[0058] The PVC panel 200 selects a piano-painted black PVC film for use.

[0059] The PVC substrate 100 is made of modified PVC.

[0060] Choose 100 parts by weight of low molecular weight PVC-SG5 (Shanghai Chlor-Alkali WS-700), 5 parts by weight of calcium / zinc composite stabilizer, 4 parts by weight of CPE, 1 part by weight of ACR, 1 part by weight of stearic acid, 1.5 parts by weight The barium stearate of parts by weight, the activated calcium carbonate of 30 parts by weight, and an appropriate amount of toner are mixed. It is extruded by a twin-screw extruder and calendered to form a semi-finished sheet. The thickness of the PVC substrate 100 is 0.76 mm by adjusting the gap between the rollers in the calendering equipment, and a PVC panel 200 with a thickness of 0.04 mm and a piano-painted black effect is s...

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Abstract

The invention discloses a polyvinyl chloride (PVC) two-layer composite board used for refrigeration equipment. The PVC two-layer composite board used for the refrigeration equipment comprises a modified PVC base plate and a PVC panel. The PVC panel is arranged on the upper surface of the modified PVC base plate. Due to the fact that the base plate and the panel are both made of PVC materials, the PVC two-layer composite board used for the refrigeration equipment possesses good compatibility, can improve tensile property of plates and reduces crazing risks, and the PVC materials possess good fire resistance and self-extinguishment and are low in cost.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment manufacturing, in particular to a PVC two-layer composite board used for refrigeration equipment. Background technique [0002] The existing PS material solid backsheet is extruded through a sheet extruder by adding color masterbatch with HIPS, and the sheet structure is single, only one layer (single layer). The following disadvantages usually exist in the production of this kind of board: [0003] 1. During the processing and bending process of PS sheet, the qualified rate is low; [0004] 2. The corners of refrigerators with PS backplanes are prone to cracking in low-temperature environments; [0005] 3. The PS backboard is easily corroded by the foaming agent in the insulation layer of the refrigerator / freezer and is easy to crack; [0006] 4. The PS backplane does not have flame retardancy. When a fire occurs, it will even support combustion, causing greater safety accident...

Claims

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Application Information

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IPC IPC(8): B32B27/30B32B27/18
Inventor 项灵芝曹家汉
Owner HEFEI MIDEA REFRIGERATOR CO LTD
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