Degradable disposable paper pulp tableware and manufacturing method thereof

A disposable, pulp technology, applied in non-woody plant/crop pulp, papermaking, textiles and papermaking, etc., can solve problems such as difficult promotion and use, high manufacturing cost, white pollution, etc., achieve low cost, beautiful appearance, and solve The effect of using

Inactive Publication Date: 2011-09-07
WEIHAI ZHENGCHANG PULP TABLEWARE
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AI-Extracted Technical Summary

Problems solved by technology

[0002] As we all know, the disposable pulp tableware used in the market currently has pulp products in addition to plastic products. Because plastic products are not easy to recycle and cause serious white pollution, the relevant departments have ban...
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Abstract

The invention relates to the field of production of vegetation fiber tableware, in particular to degradable disposable paper pulp tableware and a manufacturing method thereof. The tableware consists of the following raw materials in percentage by weight: 20 to 70 percent of mechanical wheat straw pulp oven dry stock, 20 to 70 percent of cane syrup oven dry stock, 5 to 10 percent of softwood pulp oven dry stock, an oil-proofing agent in an amount which is 0.9 to 1.2 percent of the total weight of the mechanical wheat straw pulp oven dry stock, the cane syrup oven dry stock and the softwood pulp oven dry stock and a waterproofing agent in an amount which is 5 to 8 percent of the total weight of the mechanical wheat straw pulp oven dry stock, the cane syrup oven dry stock and the softwood pulp oven dry stock. The manufacturing method comprises the following steps of: soaking a mechanical wheat straw pulp plate, a cane syrup plate and a softwood pulp plate by using water; pulping by using a pulping machine until all the pulp plates are completely and uniformly changed into fibers; putting pulp liquid into a pulp batching pool; diluting by adding water; adding the waterproofing agent and the oil-proofing agent; conveying the pulp liquid into a quantification cup of a forming machine by using a pulp pump; after the quantification cup is fully filled, placing a 40-60 mesh screen mesh on a forming die; adsorbing under vacuum to form a wet pulp blank by using the forming machine; transferring the formed wet pulp blank into a hot-press mold of a setting machine by using the mesh screen; pressing the wet pulp blank to be dry by using temperatures, wherein irregular edges are arranged outside a set product; and removing irregular burrs to ensure that the excircle of the product is smooth and neat.

Application Domain

Water-repelling agents additionNon-woody plant/crop pulp

Technology Topic

Hot pressHot pressing +6

Examples

  • Experimental program(2)

Example Embodiment

[0013] Example 1:
[0014] Using mechanical wheat straw pulp, sugar cane pulp and softwood pulp as raw materials, the components (weight %) are mechanical wheat straw pulp absolute dry pulp 20, sugarcane pulp absolute dry pulp 70, softwood pulp absolute dry pulp 10, and then add Oil-proofing agent, the oil-proofing agent is 0.9% of the absolute dry pulp of mechanical wheat straw pulp, sugarcane pulp and softwood pulp, and a waterproofing agent is added. The waterproofing agent is 5% of the absolute dry pulp of mechanical wheat straw pulp, sugarcane pulp and softwood pulp.
[0015] First, soak the sugarcane pulp board and softwood pulp board in water, and add mechanical wheat straw pulp. Put the soaked pulp board into the beater. The volume of the beater is 1 cubic meter and the power is 18.5 kilowatts. Add a proper amount to the beater Then soak for 3 minutes. Turn on the beating machine and start beating. The beating time is about 10 minutes until all the pulp boards are evenly converted into fibers. Stop beating. When beating, pay attention to only beating all the pulp boards into fibers. Beat the pulp for a long time to prevent breaking the pulp board fiber.
[0016] Turn on the slurry valve of the beater, put the already beaten slurry into the slurry mixing tank, add water to dilute it to a concentration of about 5%, and then add the water repellent and oil repellent to the slurry tank, first add the water repellent, before adding Dilute with more than 30 times of water, and slowly add it to the slurry tank. After stirring for 2 minutes, dilute the oil repellent with 50 times or more water, slowly add it to the slurry tank, and stir for another 5 minutes to complete the addition and adsorption of additives In the process, in order to make the oil and water repellent agent adsorb uniformly, it must be diluted as required to ensure that the oil repellent and water repellent agent are uniformly adsorbed on the fiber.
[0017] Open the slurry valve, put the qualified slurry in the slurry mixing tank into the underground slurry tank by gravity. The mixer in the underground slurry tank continues to stir the slurry to ensure the slurry is uniform, and the slurry pump is used to deliver the slurry to the shaping machine for a fixed amount In the cup, after the dosing cup is filled, the excess slurry is returned to the slurry tank through the slurry return pipe, and the 40--60 mesh screen is placed on the forming mold, the forming machine is started, and the slurry in the dosing cup is placed. In the forming mold of the wire mesh, it is formed by vacuum adsorption by the forming machine. The forming time is about 10-20 seconds (adjusted according to different shapes of products). The slurry is absorbed into a wet pulp embryo with a water content of about 75% similar to the shape of the forming mold. The water in the slurry is returned to the return pool through the return pipe for the next slurry preparation. The screen must be pressed into the same shape as the product on the shaping mold before use, so that the shape of the wet embryo and the shape of the shaping mold are the same during molding.
[0018] Use the wire mesh to transfer the formed wet pulp embryo to the hot pressing mold of the setting machine, the temperature of the hot pressing mold of the setting machine is 250 degrees, use the pressurizing cylinder of the setting machine to squeeze out part of the water, and use the temperature to dry the wet pulp. The pressure of the pressurizing cylinder of the setting machine is about 12 tons, and the shaped product has irregular edges on the outside.
[0019] The finalized product is transferred to the trimming process, trimming is performed, the irregular burrs are removed, and the outer circle of the product is smooth and flat. The cut edges are beaten with an edge material pulper for reuse. The trimming machine is hydraulic, with a trimming pressure of 5 tons. After trimming, the product enters the inspection process and is inspected as required. The unqualified products are separated from the finished products, and the qualified products are entered into the ultraviolet disinfection machine for disinfection. After the disinfection, the products are counted and packed in bags, and the whole bags are sealed in plastic. Pack the box, seal it with transparent tape, and finally deliver the sealed box to the finished product inventory, and the entire production process is completed.

Example Embodiment

[0020] Example 2:
[0021] Using mechanical wheat straw pulp, reed pulp, and softwood pulp as raw materials, the components (weight %) are mechanical wheat straw pulp absolute dry pulp 45, reed pulp absolute dry pulp 50, and softwood pulp absolute dry pulp 5, then add Oil-proofing agent, the oil-proofing agent is 1.1% of the absolute dry pulp of mechanical wheat straw pulp, reed pulp and softwood pulp, and water repellent is added. The waterproofing agent is 8% of the absolute dry pulp of mechanical wheat straw pulp, reed pulp and softwood pulp. The production method of the degradable disposable paper pulp tableware is the same as the first embodiment.
[0022] The raw materials of the present invention can also be implemented in an embodiment in which the proportions (weight percentages) listed in the following table are mixed. The processing technology is the same as in Example 1. The oil repellent refers to the weight percentage of the absolute dry pulp composed of mechanical wheat straw pulp, sugarcane pulp needles and leaf wood pulp. The water repellent refers to the weight percentage of the absolute dry pulp composed of mechanical wheat straw pulp, sugarcane pulp needles and leaf wood pulp. The production method of the degradable disposable paper pulp tableware is the same as the first embodiment.
[0023] The sugarcane pulp of the present invention can also be replaced by reed pulp.
[0024] Example

PUM

no PUM

Description & Claims & Application Information

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