Manufacture method for paper-based gate-pouring pipes

A technology of paper tube and forming method, which is applied in the direction of textiles and papermaking, can solve the problems of high cost, cumbersomeness, and obstacles to the popularization and use of paper runner tubes, and achieves enhanced bending strength and local anti-sag ability, and is easy to operate Effect

Inactive Publication Date: 2017-07-07
郎旗
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the foundry industry, the paper sprue tube (authorized announcement number: CN100363127C) produced by the molding technology invented by Kao Corporation of Japan is being promoted and used, but its molding technology has not deviated from the traditional pulp molding hollow product molding technology, namely The two half-molds form a mold cavity. Grouting is injected into the mold cavity successively from the opening to form the paper fiber accumulation, inject compressed air to dehydrate the formed paper fiber, and then insert the elastomer core through the opening and expand it for extrusion molding. The paper fibers are tightly bonded to the mold, and in the thermal shaping station, an elastomer core needs to be inserted into the opening and expanded to obtain a good shape. Promotion and use of pipes

Method used

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  • Manufacture method for paper-based gate-pouring pipes

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1 Manufacturing method one of L-shaped paper sprue pipe:

[0026] Step 1: Grouting: Quantitatively inject the slurry with a concentration of 1% prepared from waste newspapers, aluminum silicate powder and ceramic fibers into the cavity of the mold made by sealing extrusion molding, such as figure 1 As shown, the sealed extrusion molding mold consists of an upper half mold 11 and a lower half mold 21 with flanging on the molding surface, an upper half mold mounting plate 12 that can be lifted, and a lower half mold mounting plate fixed on the molding workbench 22. The mandrel 31 made of nylon 6, the mandrel support 32, the mandrel support positioning rod 33 and the circular cylinder 41 which are dynamically and sealingly set on the lower die mounting plate 22, at this time, the upper half-mold mounting plate 12 and the The upper end surface of the cylindrical barrel 41 is separated, and the cavity formed by the cylindrical barrel 41 and the lower mold mountin...

Embodiment 2

[0031] Example 2 Manufacturing method two of L-shaped paper sprue pipe:

[0032] Step 1: Grouting The slurry with a concentration of 1.5% prepared from wood pulp, aluminum silicate ore powder, ceramic fiber and silica sol is quantitatively injected into the cavity of the mold made by sealing extrusion molding, Except for the shape and size of the molding surface (wherein the ratio of the flanging width to the tube diameter of the molding surfaces of the upper half-mold 11 and the lower half-mold 21 is smaller than that of Example 1), the mold composition is the same as that of Example 1.

[0033]Step 2: Forming After the two half-moulds 11 and 21 are closely bonded, the maximum pressure on the fiber layer on the forming surface is greater than 10Mpa and reaches 20Mpa, the rest are the same as in Example 1;

[0034] Step 3: Dry the upper mold mounting plate 12 and open the mold cavity, take out the formed wet blank of the L-shaped paper tube 51 with a moisture content of about ...

Embodiment 3

[0037] Embodiment 3 Manufacturing method five of L-shaped paper sprue pipe:

[0038] Will mix waste and old newspapers, carbon fibers and adhesives by the weight ratio disclosed by Kao technology to prepare the slurry and inject quantitatively into the mold cavity made by the sealed extrusion molding method. The following steps are the same as in Example 1, but can Step 5 of Example 1 is not included.

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Abstract

The invention relates to a manufacture method for paper-based gate-pouring pipes. The method is capable of manufacturing high-density and high-strength paper pipes in such a manner that paper fibers with water as a carrier are piled, extruded and dried for formation to obtain high-density and high-strength paper pipes and also compounding high-temperature resistant material with paper pipes. A die composed of the paper pipes is composed of two half dies. In the initial state, the two half dies are in split states. One core die is placed between the two half dies. The two half dies are formed by independent drainage. The two half dies perform relative motion towards the core die after enough fiber layers are accumulated or during the layer-shaped accumulation till splitting surfaces of the two half dies are closely attached and the gaps between the core die and the forming surfaces of the half dies reach the set gaps. Therefore, fibers accumulated in layers can be fully dehydrated and closely combined as one on the splitting surfaces. Then, a wet blank of the paper pipes and the core die are drawn out together and dried by heating and re-cooled at a certain temperature. The core die is taken out.

Description

technical field [0001] The invention relates to a method for making a paper sprue tube, including a method of making a high-density and high-strength paper tube with a certain shape through the forming process of stacking, extruding and drying paper fibers with water as a carrier, and making a high-temperature-resistant material A method of compounding with the paper tube. Background technique [0002] In the foundry industry, the paper sprue tube (authorized announcement number: CN100363127C) produced by the molding technology invented by Kao Corporation of Japan is being promoted and used, but its molding technology has not deviated from the traditional pulp molding hollow product molding technology, namely The two half-molds form a mold cavity. Grouting is injected into the mold cavity successively from the opening to form the paper fiber accumulation, inject compressed air to dehydrate the formed paper fiber, and then insert the elastomer core through the opening and exp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21J3/04
CPCD21J3/04
Inventor 郎旗
Owner 郎旗
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