Production process and device of degradable sponge product

A production process and technology of sponge products, applied in the field of production process and device of degradable sponge products, can solve the problems of single force direction, single molding direction, limited matching and installation methods of various matching iron parts and plastic parts, etc.

Pending Publication Date: 2021-04-09
NINGBO NECO SPONGE TECHONOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, adding iron parts and plastic parts to the molding device is generally in the upward direction of the molding, and the direction of the molding is relatively single, only in one direction, resulting in a limited nu

Method used

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  • Production process and device of degradable sponge product
  • Production process and device of degradable sponge product
  • Production process and device of degradable sponge product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]A production process of degradable sponge products, using wood pulp, bamboo pulp, and agricultural and forestry residues as initial raw materials, of which bamboo pulp accounts for more than 50%, after pretreatment, dissolution, pore forming, molding, freezing point aging, and sulfuric acid coagulation bath Regenerate in medium, rinse to neutral drying to make 90% by weight cellulose sponge product, the pore forming includes adding auxiliary agent, pore forming agent and mixing under high-speed stirring to form pores.

[0040] Pretreatment includes taking wood pulp, bamboo pulp, and agricultural and forestry residues as initial raw materials, slicing, screening, and washing, and then loading them into pots; steam pre-hydrolysis at 170°C for 50 minutes, and exhaust gas cooling to 140°C for 20 minutes after pre-hydrolysis . The dissolution is divided into three stages. The first stage is maintained at -5°C after the pretreatment and circulated for about 50 minutes (maintai...

Embodiment 2

[0044] A production process of degradable sponge products, using wood pulp, bamboo pulp, and agricultural and forestry residues as initial raw materials, after pretreatment, dissolution, pore formation, molding, freezing point aging, regeneration in a sulfuric acid coagulation bath, washing to neutral drying Dried to make 95% by weight cellulose sponge product, said pore forming includes adding auxiliary agent, pore forming agent and mixing under high-speed stirring to perform pore forming. Pretreatment includes taking wood pulp, bamboo pulp, and agricultural and forestry residues as the initial raw materials, slicing, screening, and washing, and then loading them into pots; steam pre-hydrolysis at 150°C for 60 minutes, and exhaust gas cooling to 160°C for 10 minutes after pre-hydrolysis .

[0045] The dissolution is divided into three stages. The first stage is maintained at -12°C and circulated for about 60 minutes after the pretreatment (maintaining 12g / l of black liquor re...

Embodiment 3

[0049] A production process of degradable sponge products, using wood pulp, bamboo pulp, and agricultural and forestry residues as initial raw materials, after pretreatment, dissolution, pore formation, molding, freezing point aging, regeneration in a sulfuric acid coagulation bath, washing to neutral drying The cellulose sponge product of 93% by weight is dried, and the pore forming includes adding an auxiliary agent and a pore forming agent and mixing under high-speed stirring to form pores. Pretreatment includes taking wood pulp, bamboo pulp, and agricultural and forestry residues as initial raw materials, slicing, screening, and washing, and then loading them into pots; steam pre-hydrolysis at 160°C for 55 minutes, and exhaust gas cooling to 150°C for 15 minutes after pre-hydrolysis . The dissolution is divided into three stages. The first stage is maintained at -8°C after the pretreatment and circulated for about 55 minutes (maintaining the black liquor residual alkali 6g...

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Abstract

The invention discloses a production process and device of a degradable sponge product. The sponge product is prepared by taking wood meal, bamboo meal and three kinds of agriculture and forestry residues as initial raw materials through pretreatment, dissolution, pore forming, forming, freezing point aging, regeneration in a sulfuric acid coagulating bath, flushing to be neutral and drying, and pore forming comprises the steps of adding an auxiliary agent and a pore forming agent, stirring at a high speed, mixing and then forming pores. A forming device is a three-face top forming device, first limiting blocks movably connected with supporting plates and second limiting blocks movably connected with a cover plate are arranged in a containing space, and the first limiting blocks, the second limiting blocks and the two supporting plates perpendicularly connected with the two second limiting blocks are matched with one another to form the containing cavity for containing sponge to be formed. According to the process and the device, hemicellulose dissolution limitation in the reaction process is reduced, a low-cost sponge production process is provided, holes formed in the interior and the surface of the sponge are uniform and consistent in size and density, and the sponge product is stable in performance, low in production cost and free of pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of sponge production and processing, in particular to a production process and device for degradable sponge products. Background technique [0002] Sponge is a general term for foam, and various sponge products with different properties can be produced according to the different materials used. Traditional sponge products are mainly synthetic resin sponges made of polyurethane and similar materials. The chemical name of the sponge is polyurethane foam material. kind. [0003] PVA collodion, especially a kind of collodion that can absorb water, can evaporate water automatically, and it is easy to break after being exposed to the sun. [0004] Sponge and collodion are made of high-molecular chemical materials, so the product itself has certain environmental pollution and cannot be regenerated. Many sponge products are in contact with human skin, which is easy to cause irritation to human skin. These sponges ...

Claims

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Application Information

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IPC IPC(8): C08J9/26B29C67/20C08L1/02
CPCC08J9/26B29C67/20C08J2301/02C08J2201/0444
Inventor 董政琦董成勇
Owner NINGBO NECO SPONGE TECHONOLOGY CO LTD
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