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Foam breaking method for cell body of plastic rubber foaming board

A technology of foam board and cell body, which is applied in the field of cell body breaking of plastic foam board, which can solve the problems of limited use range, poor resilience, and lack of horizontal foam breaking.

Inactive Publication Date: 2006-12-06
SUN OWN INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 2. Moreover, because the piercing and breaking direction of the foam board is a consistent straight line direction, lack of horizontal breaking, resulting in a certain range of use restrictions;
[0009] 3. The opening path and location of the air bubbles in the cell are the same, and its ability to inhale and release gas is limited, so its resilience after compression is not good, and the air permeability is limited to linear penetration

Method used

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  • Foam breaking method for cell body of plastic rubber foaming board
  • Foam breaking method for cell body of plastic rubber foaming board
  • Foam breaking method for cell body of plastic rubber foaming board

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Embodiment Construction

[0020] The cell body breaking method of the plastic foam board with open cell body of the present invention mainly comprises the following steps:

[0021] (1) Make a foam board first:

[0022] Mix an appropriate amount of ethylene vinyl acetate plastic (referred to as EVA), or polyethylene plastic (referred to as PE) plastic or a mixture thereof, and mix a predetermined ratio of foaming agent, bridging agent, stabilizer and auxiliary agent according to the routine, and add Warm and knead evenly to form a plastic block, and then roll out the sheet to form a sheet with a predetermined size suitable for filling in a predetermined mold, and then put the sheet into the mold, with a predetermined temperature and time And pressure heating under pressure conditions. In this embodiment, the heating temperature is 120-180°C and the heating time is 25-40 minutes, so that the foaming agent decomposes to generate foaming expansion, and then the mold is opened to take out the foamed board ...

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Abstract

The invention is a method of breaking bubble of cell bodies of plastic foam board, first making a foam board, then making vacuum bubble breaking step on the foam board, to swell the air in the cell bodies to expand the volume of the walls of the cell bodies up to the predetermined extent, when the pressure returns to the normal instantaneously, making the walls burst with the instantaneous pressure reduction, so as to achieve high-plasticity good-permeability and efficiency of excellent resilience after compressed.

Description

technical field [0001] The invention relates to a cell body breaking method of a plastic foam board. It is to manufacture a foam board first, and then carry out a vacuum breaking step on the foam board, so that the air inside the cell body itself expands, and the outer periphery of the foam board is expanded. The volume of the solid shell wall is expanded and then broken to obtain the performance of high softness, good air permeability and excellent recovery force after being compressed. Background technique [0002] As we all know, plastic foam is widely used in shoe soles, insoles, filling materials, cushioning materials and packaging materials because of its good cushioning, sound insulation, heat insulation and floating properties, as well as superior processability; according to its development The structure of the bubble chamber can be roughly divided into two types: closed-cell foam and open-cell foam. The closed-cell foam means that there are no channels between the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C44/02B29C44/56B29K105/04
Inventor 陈清溪
Owner SUN OWN INDAL