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A kind of manufacture method of polyurethane foam hollow sphere

A technology of a hollow sphere and a manufacturing method, which is applied in the field of polyurethane foam plastics, can solve the problems of reducing labor costs, and the manufacturing process is not simple enough, and achieves the effects of easy operation and control, light weight, and reduced dosage.

Active Publication Date: 2015-12-23
肇庆市至上塑料五金制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this specific molding method of foamed toys can reduce the amount of foaming raw materials, the molding of a specific toy requires secondary foaming, and the entire manufacturing process is not simple enough, and it needs to be controlled in time. This production method is not suitable. Reduce labor costs
[0004] A method for manufacturing foamed hollow spheres that not only saves the amount of foamed raw materials, has low production costs, but also overcomes the shortcomings of the heavy foamed sphere itself, and has a simple manufacturing process and is easy to control, has not yet been reported.

Method used

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  • A kind of manufacture method of polyurethane foam hollow sphere
  • A kind of manufacture method of polyurethane foam hollow sphere
  • A kind of manufacture method of polyurethane foam hollow sphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The manufacture method of the polyurethane foamed hollow sphere of the present embodiment comprises the following steps:

[0041] (1) Open the foam molding mold 1, and spray a release agent on the inner surface 2 of the mold;

[0042] (2) Spray in-mold paint on the inner surface 2 of the mold coated with the release agent;

[0043] (3) Place several movable blocks 3 on the inner surface 2 of the mold;

[0044] (4) Put an inflatable liner 4 into the position defined by several movable blocks 3 in the mold;

[0045] (5) Inject the polyurethane raw material slurry into the foam molding mold 1;

[0046] (6) Clamping and polymerization;

[0047] (7) Vacuumize the inside of the foam molding mold 1;

[0048] (8) Open the mold to get product 5;

[0049] (9) Take out the inflatable liner 4 and several movable blocks 3 to obtain the finished product 6 .

[0050] Wherein, the inflatable liner 4 is made of rubber balls, and several movable blocks 3 are detachably fixed on the...

Embodiment 2

[0052] The manufacture method of the polyurethane foamed hollow sphere of the present embodiment comprises the following steps:

[0053] (1) Open the foam molding mold 1, and spray a release agent on the inner surface 2 of the mold;

[0054] (2) Place several movable blocks 3 on the inner surface 2 of the mold;

[0055] (3) Put an inflatable liner 4 into the position defined by the movable blocks 3 in the mold;

[0056] (4) Inject the polyurethane raw material into the foam molding mold;

[0057] (5) Clamping and polymerization;

[0058] (6) Open the mold to get the product;

[0059] (7) Take out the inflatable liner 4 and the movable block 3 to obtain the finished product.

[0060] Wherein, the inflatable liner 4 is made of rubber balls, and several movable blocks 3 are detachably fixed on the inner surface 2 of the mold at intervals. The above-mentioned polyurethane raw materials include polyether polyol, isocyanate and amine catalyst / organotin catalyst.

Embodiment 3

[0062] The manufacture method of the polyurethane foamed hollow sphere of the present embodiment comprises the following steps:

[0063] (1) Open the foam molding mold 1, and spray a release agent on the inner surface 2 of the mold;

[0064] (2) Place several movable blocks 3 on the inner surface 2 of the mold;

[0065] (3) Put an inflatable liner 4 into the position defined by the movable blocks 3 in the mold;

[0066] (4) Inject the polyurethane raw material into the foam molding mold;

[0067] (5) Clamping and polymerization;

[0068] (6) Vacuum the inside of the foam molding mold 1;

[0069] (7) Open the mold to get the product;

[0070] (8) Take out the inflatable liner 4 and the movable block 3 to obtain the finished product.

[0071] Wherein, several movable blocks 3 are detachably fixed on the inner surface of the mould, spaced apart from each other. In actual production, the size of the rubber ball and the length of the movable block can be selected as required ...

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Abstract

The invention relates to a method for manufacturing a hollow polyurethane foaming ball. The method is characterized by comprising the following steps of: (1) opening a foaming mold, and spraying a mold release agent on the inner surface of the mold; (2) placing a plurality of movable blocks on the inner surface of the mold, and placing an inflatable liner into a position limited by the plurality of movable blocks in the mold; (3) emitting a polyurethane raw material into the foaming mold; (4) performing mold assembly and polymerization reaction; (5) opening the mold to obtain a product; and (6) taking out the inflatable liner and the movable blocks to obtain a finished product. The method for manufacturing the hollow polyurethane foaming ball is simple in manufacturing process and easy to operate and control; the consumed raw material amount of foaming polyurethane is greatly decreased; the production cost can be greatly reduced; and the manufactured hollow ball is light in weight, and adjustable in the size of the hollowness.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam plastics, in particular to a method for manufacturing polyurethane foamed hollow spheres. Background technique [0002] Existing polyurethane (PU) foamed spheres are generally manufactured by the following methods (such as figure 1 Shown): Prepare a mold with a predetermined spherical shape cavity inside, then spray the release agent on the mold, then spray the in-mold paint, pour the polyurethane raw material for foaming into the mold, close the mold and shake the mold Foaming reaction, so that the polyurethane raw material foams and fills the entire mold cavity, and the product is taken out after the mold is opened. However, the production of polyurethane foamed spheres by this method has the disadvantages of a large amount of polyurethane raw materials, high production costs, and heavy finished product spheres. [0003] The publication number is CN1365882A and the publication date i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C44/02B29K75/00
Inventor 周广林
Owner 肇庆市至上塑料五金制品有限公司