Shrinkage-proof door shell made of net-shaped glass fiber material and manufacturing process of shrinkage-proof door shell

Abstract

The invention discloses an anti-shrinkage door shell made of a reticular glass fiber material, the anti-shrinkage door shell comprises a polyurethane foam layer, a grid reinforcing layer and a door shell, the grid reinforcing layer is attached to one side of the door shell, and the polyurethane foam layer is connected with the door shell through the grid reinforcing layer. By means of the process mode that the glass fiber gridding cloth is attached to the refrigerator door shell, bubbles are divided while the door shell is enhanced, and the problem that the door shell shrinks due to the bubbles after foaming is solved. According to the refrigerator door shell, by means of the process mode that the fiberglass gridding cloth is attached to the refrigerator door shell, felt high in price is replaced, the thickness of the door shell can be further reduced, and therefore cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerator door shell production and manufacturing, and in particular to an anti-shrinkage door shell using a mesh glass fiber material and a manufacturing process thereof. Background Art

[0002] For a long time, the bubble problem in the door shell has been one of the difficult problems in the foaming process of the refrigerator industry. The foam flow end state is poor and there are many bubbles. In the low temperature environment in winter, the door shell is prone to shrinkage after cooling, affecting the appearance. Especially after the use of high-gloss door shells has increased, consumers have further improved their requirements for appearance, and this problem has become more prominent. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned background technical problems and to provide an anti-shrinkage door shell using mesh fiberglass material.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A shrinkage-proof door shell using a mesh fiberglass material comprises a polyurethane foam layer, a mesh reinforcement layer and a door shell, wherein the mesh reinforcement layer is attached to one side of the door shell, and the polyurethane foam layer is connected to the door shell via the mesh reinforcement layer.

[0006] As a further solution of the present invention: the grid reinforcement layer is a mesh glass fiber material.

[0007] As a further solution of the present invention: the mesh glass fiber material is specifically a glass fiber mesh cloth.

[0008] As a further solution of the present invention: the thickness of the door shell is 0.3-0.5 mm.

[0009] As a further solution of the present invention: the mesh number of the mesh glass fiber material is 5-13 meshes.

[0010] As a further solution of the present invention: the thickness of the mesh glass fiber material is 0.1-0.6 mm.

[0011] As a further solution of the present invention: the mesh glass fiber material has a grammage per square meter of 60-160g.

[0012] A manufacturing process for an anti-shrinkage door shell using a mesh fiberglass material, using a fiberglass mesh cloth with adhesive on the back;

[0013] Take the door shell of the refrigerator, cut the fiberglass mesh cloth to match the size of the door shell, and stick it on the inner wall of the door shell through the adhesive on the back of the fiberglass mesh cloth. After the door shell and the door liner are assembled in the mold, inject the reaction raw materials;

[0014] While waiting for the polyurethane slurry to foam, a polyurethane foam insulation layer is formed in the reserved space, thereby forming an integrated anti-shrinkage structure of the door shell inner wall, glass fiber mesh cloth and polyurethane foam.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention uses a process of attaching a glass fiber mesh cloth to a refrigerator door shell to strengthen the door shell while dividing bubbles, thereby solving the problem of door shell shrinkage caused by bubbles after foaming.

[0017] 2. The present invention replaces expensive felt by attaching glass fiber mesh cloth to the refrigerator door shell, and the thickness of the door shell can be further reduced, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] In the figure: 1. Polyurethane foam layer; 2. Grid reinforcement layer; 3. Door shell. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] For specific example 1, please refer to Figure 1 As shown, the present invention is an anti-shrinkage door shell using a mesh glass fiber material, including a polyurethane foam layer 1, a mesh reinforcement layer 2 and a door shell 3, wherein the mesh reinforcement layer 2 is attached to one side of the door shell 3, and the polyurethane foam layer 1 is connected to the door shell 3 through the mesh reinforcement layer 2.

[0023] The mesh reinforcement layer 2 is made of mesh fiberglass material.

[0024] The mesh glass fiber material is specifically glass fiber mesh cloth.

[0025] The thickness of the door shell 3 is 0.3-0.5 mm.

[0026] The mesh number of the mesh fiberglass material is 5-13 mesh.

[0027] The thickness of the mesh fiberglass material is 0.1-0.6mm.

[0028] The mesh fiberglass material has a gram weight of 60-160g per square meter. Specific embodiment 2:

[0030] A shrinkage-proof door shell using a mesh glass fiber material, wherein the mesh glass fiber material has a mesh count of 6, a thickness of 0.25 mm, and a gram weight of 70 g per square meter. The thickness of the door shell 3 is 0.5 mm, and the entire surface of the glass fiber mesh cloth is attached to the inner wall surface of the door shell 3. After foaming, a refrigerator mesh glass fiber material-reinforced shrinkage-proof door shell process and method are realized. Specific embodiment 3:

[0032] A shrinkage-proof door shell using a mesh glass fiber material, wherein the mesh glass fiber material has 8 meshes, a thickness of 0.3 mm, and a gram weight of 80 g per square meter. The thickness of the door shell 3 is 0.45 mm. The entire surface of the glass fiber mesh cloth is attached to the inner wall surface of the door shell 3. After foaming, the refrigerator mesh glass fiber material is used to reinforce the shrinkage-proof door shell process and method thereof. Specific embodiment 4:

[0034] A shrinkage-proof door shell using a mesh glass fiber material, wherein the mesh glass fiber material has a mesh count of 9, a thickness of 0.4 mm, and a gram weight of 90 g per square meter. The thickness of the door shell 3 is 0.4 mm, and the entire surface of the glass fiber mesh cloth is attached to the inner wall surface of the door shell 3. After foaming, a refrigerator mesh glass fiber material-reinforced shrinkage-proof door shell process and method are realized. Specific embodiment 5:

[0036] A shrinkage-proof door shell using a mesh glass fiber material, wherein the mesh glass fiber material has a mesh number of 12, a thickness of 0.5 mm, and a gram weight of 120 g per square meter. The thickness of the door shell 3 is 0.35 mm. The entire surface of the glass fiber mesh cloth is attached to the inner wall surface of the door shell 3. After foaming, the refrigerator mesh glass fiber material is used to reinforce the shrinkage-proof door shell process and method thereof. Specific embodiment 6:

[0038] A shrinkage-proof door shell using a mesh fiberglass material, wherein the mesh fiberglass material has 13 meshes, a thickness of 0.6 mm, and a gram weight of 160 g per square meter; the thickness of the door shell 3 is 0.3 mm; the entire surface of the fiberglass mesh cloth is attached to the inner wall surface of the door shell 3; and after foaming, a refrigerator mesh fiberglass material-reinforced shrinkage-proof door shell process and method are realized.

[0039] Take a glass fiber mesh cloth with adhesive on the back, purchased from Hefei Guozhifeng Adhesive Products Co., Ltd., with a mesh number of 5, a thickness of 0.2 mm, and a weight of 60 g / m2;

[0040] Take the refrigerator door shell 3, here use Meiling BCD-337W model refrigerator refrigeration door shell, thickness is 0.45mm; cut the glass fiber mesh cloth into 321*948mm size, and then attach it to the inner wall of the door shell 3 through the adhesive on the back of the glass fiber mesh cloth. After the door shell 3 and the door liner are assembled in the mold, the reaction raw materials are injected. The reaction raw materials are black material (isocyanate) and white material (polyether polyol). The black material comes from Wanhua Chemical Group, and the white material comes from Wanhua Chemical (Ningbo) Rongwei Polyurethane Co., Ltd. The preparation process is the existing technology and will not be repeated here; the mold temperature is 38°C, the density of the gun tip sample is 22.5Kg / m3, and the core density is 32Kg / m3;

[0041] Waiting for the polyurethane slurry to foam, a polyurethane foam insulation layer is formed in the reserved space, thereby forming an integrated anti-shrinkage structure of the inner wall of the door shell 3 - glass fiber mesh cloth - polyurethane foam.

[0042] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. An anti-shrinkage door shell using a mesh fiberglass material, characterized in that: It comprises a polyurethane foam layer (1), a grid reinforcement layer (2) and a door shell (3), wherein the grid reinforcement layer (2) is attached to one side of the door shell (3), and the polyurethane foam layer (1) is connected to the door shell (3) via the grid reinforcement layer (2).

2. The anti-shrinkage door shell using mesh fiberglass material according to claim 1, characterized in that: The mesh reinforcement layer (2) is a mesh glass fiber material.

3. The anti-shrinkage door shell using mesh fiberglass material according to claim 2, characterized in that: The mesh glass fiber material is specifically glass fiber mesh cloth.

4. The anti-shrinkage door shell using mesh fiberglass material according to any one of claims 1 to 3, characterized in that: The thickness of the door shell (3) is 0.3-0.5 mm.

5. The anti-shrinkage door shell using mesh fiberglass material according to any one of claims 2 to 3, characterized in that: The mesh number of the mesh fiberglass material is 5-13 mesh.

6. The anti-shrinkage door shell using mesh fiberglass material according to any one of claims 2 to 3, characterized in that: The thickness of the mesh fiberglass material is 0.1-0.6mm.

7. The anti-shrinkage door shell using mesh fiberglass material according to any one of claims 2 to 3, characterized in that: The mesh fiberglass material has a gram weight of 60-160g per square meter.

8. A process for manufacturing an anti-shrinkage door shell using a mesh glass fiber material, characterized in that: Take the fiberglass mesh cloth with adhesive on the back; Take the door shell (3) of the refrigerator, cut the glass fiber mesh cloth to a size matching the door shell (3), and stick the glass fiber mesh cloth to the inner wall of the door shell (3) through the adhesive on the back of the glass fiber mesh cloth. After the door shell (3) and the door liner are assembled in a mold, the reaction raw materials are injected; Waiting for the polyurethane slurry to foam, a polyurethane foam insulation layer is formed in the reserved space, thereby forming an integrated anti-shrinkage structure of the inner wall of the door shell (3), the glass fiber mesh cloth and the polyurethane foam.

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