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A kind of shaped sponge cushion with different hardness and preparation method thereof

A technology of hardness and sponge, which is applied in the field of different hardness shaped sponge cushions and its preparation, which can solve the problems of various raw material ingredients, failure to realize multiple hardness changes of cushions, and inability to effectively fit the human body sitting posture curve, etc.

Active Publication Date: 2021-04-27
ZHEJIANG SUNON FURNITURE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Compared with traditional sponge cushions, multi-hardness sponge cushions have better comfort, so they have greater market prospects. However, the multi-hardness sponge cushions currently on the market are basically connected by glue, and their product performance and environmental protection are all poor, and because it basically adopts the different hardness distribution of the upper and lower layers, it can not effectively fit the human body sitting posture curve, and the comfort is poor; in the patent CN106854270A "multi-hardness polyurethane elastomer and its preparation method", its Different hardness elastomers can be obtained by changing different curing agents, but because it does not make a variety of hardness elastomers integrally formed, it has the defects of long production cycle, high energy consumption, high cost, and unfavorable promotion of production; in the patent CN1398913A In "A Production Method of Dual-hardness, Environment-friendly Polyurethane Cushion", it realizes the double-hardness function of the seat cushion by embedding high-density polyurethane filler, but this method makes the production process complicated, with many raw materials and ingredients, and cannot Realize multiple hardness changes in the front and rear of the seat cushion, with large limitations

Method used

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  • A kind of shaped sponge cushion with different hardness and preparation method thereof
  • A kind of shaped sponge cushion with different hardness and preparation method thereof
  • A kind of shaped sponge cushion with different hardness and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]A kind of different hardness setting sponge cushion, such as figure 1 As shown, the sponge cushion 1 is divided into two different hardness regions (region a11, region b12) before and after;

[0045] In area a11:

[0046] Component A comprises the following raw materials by weight percentage:

[0047]

[0048] Component B comprises the following raw materials by weight percentage:

[0049] Isocyanate 17%;

[0050] The weight ratio of the A component and the B component is 83:17.

[0051] In zone b12:

[0052] Component A comprises the following raw materials by weight percentage:

[0053]

[0054] Component B comprises the following raw materials by weight percentage:

[0055] Isocyanate 26%;

[0056] The weight percentage of the A component and the B component is 37:13.

[0057] Wherein, the polyether polyol is SA34-05, its molecular weight is 5000; the polymer polyol is KGP-524, its molecular weight is 2300-3500; the isocyanate is MDI 2412; glue catalyst...

Embodiment 2

[0073] A kind of different hardness setting sponge cushion, such as figure 2 As shown, the sponge cushion 1 is divided into three different hardness regions (region c21, region d22, region e23);

[0074] In zone c21:

[0075] Component A comprises the following raw materials by weight percentage:

[0076]

[0077] Component B comprises the following raw materials by weight percentage:

[0078] Isocyanate 19%;

[0079] The weight percentage of the A component and the B component is 81:19.

[0080] In zone d22:

[0081] Component A comprises the following raw materials by weight percentage:

[0082]

[0083] Component B comprises the following raw materials by weight percentage:

[0084] Isocyanate 25%;

[0085] The weight percentage of the A component and the B component is 3:1.

[0086] In zone e23:

[0087] Component A comprises the following raw materials by weight percentage:

[0088]

[0089] Component B comprises the following raw materials by weight p...

Embodiment 3

[0107] A kind of different hardness setting sponge cushion, such as image 3 As shown, the sponge cushion 1 is divided into four regions with different hardness (region f31, region g32, region h33, region i34);

[0108] In area f31:

[0109] Component A comprises the following raw materials by weight percentage:

[0110]

[0111]

[0112] Component B comprises the following raw materials by weight percentage:

[0113] Isocyanate 23%;

[0114] The weight percentage of the A component and the B component is 77:23.

[0115] In zone g32:

[0116] Component A comprises the following raw materials by weight percentage:

[0117]

[0118] Component B comprises the following raw materials by weight percentage:

[0119] Isocyanate 24%;

[0120] The weight percentage of the A component and the B component is 19:6.

[0121] In zone h33:

[0122] Component A comprises the following raw materials by weight percentage:

[0123]

[0124] Component B comprises the followi...

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Abstract

The present invention relates to a different hardness setting sponge cushion and its preparation method, comprising A component and B component, A component contains polyether polyol; polymer polyol; foaming agent; cell opener; catalyst; water; Chain extender; component B contains isocyanate; the weight percentage of component A and component B is 10:2 to 7:3; the preparation method is as follows: 1: prepare component A; 2: prepare component B; 3 : Mold preheating; 4: Make the same batch of A component and B component mix and react to make a hardness area of ​​the sponge cushion, different batches of A component combined with the corresponding B component are injected in batches In the mold, so that the sponge cushion is composed of multiple hardness regions with different hardness; 5: compression molding; 6: foaming; 7: curing molding; 8: demoulding. Compared with the prior art, the present invention has the advantages of conforming to the sitting posture curve of the human body, good comfort, simple raw materials and processes, environmental protection, low cost, and suitable for mass production.

Description

technical field [0001] The invention relates to the technical field of sponge cushion preparation, in particular to a shaped sponge cushion with different hardness and a preparation method thereof. Background technique [0002] Compared with traditional sponge cushions, multi-hardness sponge cushions have better comfort, so they have greater market prospects. However, the multi-hardness sponge cushions currently on the market are basically connected by glue, and their product performance and environmental protection are all poor, and because it basically adopts the different hardness distribution of the upper and lower layers, it can not effectively fit the human body sitting posture curve, and the comfort is poor; in the patent CN106854270A "multi-hardness polyurethane elastomer and its preparation method", its Different hardness elastomers can be obtained by changing different curing agents, but because it does not make a variety of hardness elastomers integrally formed, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/63C08G18/32C08J9/14
CPCC08G18/3206C08G18/48C08G18/632C08G18/6674C08J9/141C08J2203/14C08J2375/08
Inventor 倪良正张叙俊朱志华胡芳园
Owner ZHEJIANG SUNON FURNITURE MFG
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