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Green-honeycomb-molded-body holder and method for producing diesel particulate filter

A formed body, unsintered technology, applied in chemical instruments and methods, separation methods, filtration separation and other directions, can solve the problem of reducing the dimensional accuracy of honeycomb formed bodies, and achieve the effect of suppressing the reduction of dimensional accuracy

Inactive Publication Date: 2015-04-08
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This becomes the cause of the reduction in the dimensional accuracy of the green honeycomb formed body

Method used

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  • Green-honeycomb-molded-body holder and method for producing diesel particulate filter
  • Green-honeycomb-molded-body holder and method for producing diesel particulate filter
  • Green-honeycomb-molded-body holder and method for producing diesel particulate filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0140] The unsintered formed honeycomb body continuously extruded from the extrusion molding machine whose mouthpiece at the exit of the extrusion molding machine has an inner peripheral diameter of 153 mm was obtained by figure 1 The standoffs shown are supported and cut to a set cut length of 240mm. A total of 32 unsintered formed honeycomb bodies were supported by supports. The dimensions of the support are: b3=155mm, b4=67.5mm, b5=290mm, b6=145mm, b7=155mm, b8=45mm, b9=77.5mm, d1=200mm, d2=130mm, d3=35mm, d4= 45mm, d5=50mm, d6=25mm, d7=25mm, d8=25mm, the material of the support is polyurethane.

Embodiment 2）

[0152] The unsintered formed honeycomb body continuously extruded from the extrusion molding machine whose mouthpiece at the outlet of the extrusion molding machine has an inner circumference diameter of 163 mm was obtained by figure 1 The standoffs shown are supported and cut to a set cut length of 300mm. A total of 75 unsintered formed honeycomb bodies were supported by supports. The dimensions of the support are: b3=164mm, b4=63mm, b5=290mm, b6=145mm, b7=155mm, b8=30mm, b9=73mm, d1=200mm, d2=130mm, d3=35mm, d4=45mm, d5=45mm, d6=25mm, d7=25mm, d8=10mm, and the material of the support is polyurethane.

Embodiment 3）

[0160] Hereinafter, Embodiment 3 of the present invention will be described. As the main body part 63, No. 9 material in Table 1 is used, and No. 17 material in Table 2 is used as the lining part 73 to constitute Figure 6 (b) Support 1E shown. After supporting the green formed honeycomb body 70 by the holder 1E for about 8 minutes, as Figure 10 As shown, there are no flaws on the side of the green formed honeycomb body 70 .

[0161] According to the present invention, it is possible to manufacture an unsintered formed honeycomb body and a diesel particulate filter with high dimensional accuracy.

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PUM

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Abstract

Provided is a green-honeycomb-molded-body holder capable of suppressing a decline in the accuracy of the dimensions of a green-honeycomb molded body. A green-honeycomb-molded-body holder (1G) for holding the lateral surface of a cylindrical green-honeycomb molded body after extrusion molding thereof, in a state where the lengthwise direction of the green-honeycomb molded body is oriented horizontally, wherein: the holder (1G) is equipped with flexible body sections (83a, 83b); the body section (83b) has a groove (87) for holding the lateral surface of the green-honeycomb molded body above the body section (83b); and a cavity (80) is formed below the groove (87) of the body section (83b).

Description

technical field [0001] The present invention relates to a support for an unsintered formed honeycomb body and a method for manufacturing a diesel particulate filter. Background technique [0002] The unsintered formed honeycomb body is an intermediate used in the manufacture of honeycomb structures in diesel particulate filters (Diesel Particulate Filter), etc., and is manufactured by extruding a paste containing ceramic raw material powder (e.g. Refer to Patent Document 1). That is, the green formed honeycomb body means a honeycomb structure before firing (raw honeycomb structure). [0003] The cylindrical unsintered formed honeycomb body extruded from the extrusion molding machine in the horizontal direction is supported by the support with its side maintained horizontally, and after being cut into a desired length, it is supported by the support. The status is sent to the next process. A groove corresponding to the cylindrical shape is provided in the main body portion...

Claims

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Application Information

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IPC IPC(8): B28B13/04B29C48/11B29C48/355
CPCB28B11/248B28B13/04B65G49/08B29K2103/08B29C48/11B29C48/022B29C48/355B01D39/2068F01N3/0222B28B2003/203B29C31/008B29D24/005
Inventor 小出信行松田雅人齐藤浩史后藤晃权土本和也
Owner SUMITOMO CHEM CO LTD