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A method of making moldings by using chromium-containing dander

A molded product and dander technology, applied in textiles and papermaking, monocarboxylate copolymer adhesives, starch adhesives, etc., can solve the problem that the structural strength and cushioning performance are not as good as foamed plastics, and padding cannot be satisfied Demand, buffering effect is not strong enough and other problems, so as to achieve the effect that it is not easy to cause fire, improve resource utilization rate, and benefit production safety

Active Publication Date: 2018-12-04
湖州优研知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Pulp molded products are light, breathable, soft and have a certain strength, which can protect the goods, shockproof buffer, have the functions of positioning and compression resistance, and are widely used in food storage, furniture backing boards and cushioning linings for other products Pad packaging, but the disadvantage of today's pulp molded products is that its structural strength and cushioning performance are not as good as foamed plastics, especially the tear resistance is poor, and it is easy to be damaged during transportation. Because the cushioning effect is not strong enough, it is currently only applicable It is used as the lining cushion material of light industrial products such as egg trays and mobile phones, which cannot meet the needs of products with high strength requirements such as home appliances, ceramic tiles, stone and industrial trays.
However, the product obtained by this method still has the hydrophilic property of paper, and is easily deliquescent and damaged when it encounters water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for making moldings from chromium-containing dander, comprising the steps of:

[0023] Step (1) add water and roughen the recovered skin flakes into fibers to make fiber slurry, put them into a storage pool for later use, and the weight ratio of skin flakes to water is 1:5;

[0024] Step (2) Adding 8% by weight of fiber slurry into the storage tank, the adhesive is special glue for regenerated leather, and stirring evenly to make leather paste;

[0025] Step (3) Pour the skin paste into the forming mold and dry it naturally to be initially shaped as a mold base, and the moisture content of the mold base is 55%;

[0026] Step (4) Put the molding die into the molding machine and pressurize it to form a molded product. The specific process of pressurized compaction is to make the compaction temperature reach 85°C, the compaction pressure is 35N, and compact for 3s to obtain the molded product. plastic products.

Embodiment 2

[0028] Step (1) Add water and roughen the recovered skin flakes into fibers to make fiber slurry, put them into a storage pool for later use, and the weight ratio of skin flakes to water is 1:3;

[0029] Step (2) Adding 6% by weight of fiber slurry into the storage tank, the adhesive is special glue for regenerated leather, and stirring evenly to make leather paste;

[0030] Step (3) Pour the skin paste into the forming mold and dry it naturally to be initially shaped as a mold base, and the moisture content of the mold base is 40%;

[0031] Step (4) Put the forming mold into the molding machine and pressurize and compact to form a molded product. The specific process of pressurizing and compacting is to make the compaction temperature reach 80°C, the compaction pressure is 35N, and compact for 3s.

[0032] Step (5) Cool the molded product naturally, then pack it.

Embodiment 3

[0034] A method for making moldings from chromium-containing dander, comprising the steps of:

[0035] Step (1) adding water to the recovered skin flakes and beating them into fibers to make fiber slurry, and putting them into a storage pool for later use. The weight ratio of skin flakes to water is 1:4;

[0036] Step (2) add the binder of 6% weight portion of fiber slurry in the storage tank, stir evenly and make leather paste; Said binder comprises 4 parts of synthetic resins, 4 parts of aluminum sulfate, 8 parts of polystyrene by weight. Acrylamide;

[0037] Step (3) using a suction filter type pulp forming machine to utilize a vacuum suction method to suck the skin paste into a molding mold and shape it into a mold base, and the moisture content of the mold base is 50%;

[0038] Step (4) put the mold blank into a molding machine and pressurize it to form a molded product. The step of pressurizing and compacting is to make the compaction temperature reach 75°C, the compact...

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PUM

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Abstract

The invention relates to the field of leather making technology, and provides a method for producing a molded article by using chrome-containing dander in a blue wet leather, through the use of a large number of dander recycled leather produced in the production of blue wet skin in the shaving film and other processes to make the molded products which is suitable non-food industrial applications with good fastness, good toughness and has a hydrolysis resistance. The method comprises the following steps: adding the recovered dander to water and hacking into the c to make the fibrous pulp, putting into the storage pool as standby application, adding the adhesive in the storage pool and stirring into uniform leather, pouring the leather paste into the mold by air-dry and preliminary stereotypes into mold blank, putting the molding die into the molding machine to compress and mold into molded product. Each materials comprises, by weight, 100 parts of leather dander, 300 to 500 parts of water and 6 to 8 parts of adhesive.

Description

technical field [0001] The invention relates to the technical field of leather production, in particular to a method for producing molded articles by using chromium-containing leather scraps. Background technique [0002] Pulp molded products are light, breathable, soft and have a certain strength, which can protect the goods, shockproof buffer, have the functions of positioning and compression resistance, and are widely used in food storage, furniture backing boards and cushioning linings for other products Pad packaging, but the disadvantage of today's pulp molded products is that its structural strength and cushioning performance are not as good as foamed plastics, especially the tear resistance is poor, and it is easy to be damaged during transportation. Because the cushioning effect is not strong enough, it is currently only applicable For egg trays, cushioning materials for the lining of light industrial products such as mobile phones, it cannot meet the needs of produ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21J5/00C09J133/26C09J201/00C09J11/04C09J175/04C09J109/06C09J131/04C09J133/04C09J103/02C09J11/06
CPCC08L2205/035C09J133/26C09J175/04D21J5/00C08L101/00C08K2003/3081C08L9/06C08L31/04C08L33/04C08L3/02C08K2003/265
Inventor 许金针许婷婷许婉妮
Owner 湖州优研知识产权服务有限公司