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Pulp-molding packaging product and manufacturing method thereof

A technology for pulp molding and packaging products, which is applied in the directions of packaging, transportation and packaging, textiles and papermaking, etc., to achieve the effect of reducing volume, improving protection ability, and developing broad application prospects.

Active Publication Date: 2014-02-05
广东省汇林包装科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of manufacturing method of pulp molded packaging products in view of the deficiencies in the prior art, which improves the structural strength of the pulp molded wet blank in the process of demoulding, and solves the problem of The tearing phenomenon that is easy to appear in the mold reduces the difficulty of demoulding, thereby greatly reducing the difficulty of production and helping to improve the yield

Method used

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  • Pulp-molding packaging product and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0032] A method for manufacturing pulp molded packaging products, comprising the following steps:

[0033] a. Pulping: mix the original wood pulp paper with water to obtain wood pulp after disintegrating, and the concentration of the wood pulp is 0.4%;

[0034] b. Slurry suction: the lower mold is immersed below the wood pulp liquid level, and the slurry is sucked under the negative pressure of -0.05MPa for 0.5 seconds. After the slurry suction operation is completed, the lower mold goes up to the pulp surface, and the pulp molding wet blank is obtained in the lower mold;

[0035] c. Dehydration: Continue to dehydrate the pulp molded wet base in the lower mold under the suction negative pressure of -0.05MPa. The dehydration time is 5 seconds, and the pulp molded wet base with a moisture content of 75% is obtained;

[0036] d. Molding: The lower mold and the upper mold are molded together, so that the lower mold and the upper mold are closely attached, and the pressure is 5MPa / ...

Embodiment 2

[0040] A method for manufacturing pulp molded packaging products, comprising the following steps:

[0041] a. Pulping: disintegrating straw pulp paper and mixing it with water to obtain straw pulp, the concentration of the straw pulp is 0.8%;

[0042] b. Slurry suction: The lower mold is immersed below the straw pulp liquid level, and the pulp is sucked under the negative pressure of -0.06MPa for 1 second. After the slurry suction operation is completed, the lower mold goes up to the pulp surface, and the pulp molded wet blank is obtained in the lower mold;

[0043] c. Dehydration: Continue to dehydrate the pulp molded wet base in the lower mold under the negative pressure suction of -0.06MPa. The dehydration time is 15 seconds, and the pulp molded wet base with a moisture content of 74% is obtained;

[0044] d. Molding: The lower mold and the upper mold are clamped so that the lower mold and the upper mold are closely attached, at 10MPa / cm 2 Under the action of high pressure...

Embodiment 3

[0048] A method for manufacturing pulp molded packaging products, comprising the following steps:

[0049] a. pulping: bagasse pulp is crushed and mixed with water to obtain pulp, and the concentration of the pulp is 1.2%;

[0050] b. Slurry suction: The lower mold is immersed below the pulp liquid level, and the slurry is sucked under the negative pressure of -0.06MPa for 1.5 seconds. After the slurry suction operation is completed, the lower mold goes up to the pulp surface, and the pulp molding wet blank is obtained in the lower mold;

[0051] c. Dehydration: Continue to dehydrate the pulp molded wet base in the lower mold under the negative pressure suction of -0.06MPa. The dehydration time is 20 seconds, and the pulp molded wet base with a moisture content of 72% is obtained;

[0052] d. Molding: The lower mold and the upper mold are clamped so that the lower mold and the upper mold are closely attached, at 15MPa / cm 2 Under the action of high pressure and -0.06 MPa negat...

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Abstract

The invention relates to the technical field of pulp-molding packaging products, particularly to a pulp-molding packaging product and a manufacturing method thereof. The manufacturing method comprises the steps as follows: pulping, molding (pulp sucking and dewatering), demolding, hot-pressing shaping and the like; and the structural strength of a pulp-molding wet blank is enhanced, the tearing phenomenon occurring easily during demolding is eliminated, the difficulty of demolding is reduced, on one hand, the production difficulty is greatly reduced, improvement of the yield is facilitated, on the other hand, the inclination degree of the tapered structure of the manufactured product is further reduced, minimum inclination angles formed by side edges and bottom edges of the pulp-molding packaging product can be 1.5 degrees, the size of an internal empty space of the pulp-molding packaging product during packaging is greatly reduced, and the capacity for protecting a packaged product is improved. The pulp-molding packaging product is made of bagasse, waste paper and the like, has the advantages of capacity for reducing consumption of forest resources, low environmental pollution, high quality and low price and is broad in development and application prospect.

Description

technical field [0001] The invention relates to the technical field of pulp molded packaging products, in particular to a pulp molded packaging product and a manufacturing method thereof. Background technique [0002] Pulp molded packaging products are a new type of packaging material that is green, environmentally friendly, and energy-saving. It is mainly made of degradable bagasse and waste paper, which can reduce the consumption of forest resources. The advantages of low cost have been widely used in the packaging of electronic communications, furniture, agricultural and sideline products, toys and other industries. Pulp molding packaging products are formed by absorbing pulp with a certain concentration (generally about 0.5~3%) through the mold under negative pressure (after molding, the moisture content of the wet billet reaches 70%-75%), so that the pulp fibers are evenly distributed in the mold Surface, so as to form a wet paper mold base with the proposed geometric ...

Claims

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Application Information

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IPC IPC(8): D21J5/00B65D1/00
Inventor 莫灿梁
Owner 广东省汇林包装科技集团有限公司
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