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Paper pulp moulded plastic products and manufacture thereof

A pulp molding and product technology, which is applied in pulp beating methods, non-woody plant/crop pulp, textiles and papermaking, etc., can solve the problems of damp microorganisms, limiting the application of pulp molding products, environmental protection and safety reduction, etc. , to achieve the effect of good fiber flexibility

Inactive Publication Date: 2008-10-15
张雪峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the shelf life of existing pulp molded products is not long enough, especially in relatively warm and humid areas, it will be damp and attacked by microorganisms
The product itself is difficult to preserve for a long time, which limits the application of pulp molded products in various packaging fields that require long-term use
At present, the method of adding anti-corrosion chemical additives is generally used to overcome this defect, but this will greatly reduce the environmental protection and safety of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 Optimization of the preparation process of Ruixiang chamaejasme pulp

[0016] The existing preparation processes of conventional pulp molded products include: pulp mixing, forming, cold pressing, drying, hot pressing and finishing. Pulp preparation: mix the paper pulp, additives, fillers, water, etc. in the proportion of the formula into the pulper for disintegration. After screening, sand removal, purification, and refining, they are mixed into a pure pulp with a certain concentration.

[0017] Molding: There are two main molding methods for pulp molded products, namely in-mold grouting and extrusion molding and out-of-mold vacuum adsorption molding. Their principle is to filter out the pulp water and trap the fibers on the mold to form a certain shape. Of semi-wet products.

[0018] Cold pressing: that is, the semi-wet product after forming is dehydrated by the mechanical cold pressing method of the pressing machine to obtain the semi-dried product. On the one h...

Embodiment 2

[0029] Example 2 Inspection of the quality index of the paper pulp molded products produced by the present invention

[0030] At present, it is very difficult to accurately use one or a few indicators to evaluate the performance of paper pulp molded products. There is no national standard (the relevant foreign standards have not been reported). Therefore, the standard requirements and detection methods of domestic cardboard products are used for reference to detect the results of the above-mentioned screening experiments and the quality indicators of the molded paper pulp products of the present invention. The test items include basic quantification, burst resistance, ring compression strength, transverse ring compression index, flat compression strength, fracture length, moisture, etc.

[0031]The method standards used in the detection are carried out in accordance with the following national standards: GB / T 451.2-2002 "Determination of Quantitative Paper and Board", GB / T 453-200...

Embodiment 3

[0035] Example 3 Test of antibacterial, moisture-proof and anti-mildew properties of the molded pulp product of the present invention

[0036] Cordyceps is a valuable Chinese medicinal material. It is generally excavated when the spores are unearthed in the early summer and the spores are not dispersed. It is sun-dried to 60% to 70% dry to remove fibrous attachments and impurities. It is sun-dried or dried at low temperature. The storage of Cordyceps is very important. It can be stored for up to 5 years under vacuum; if it is not vacuum, the shelf life is up to 2-3 years. The key points of cordyceps storage are moisture-proof, moth-proof and insect-proof. After the cordyceps becomes damp, the seedlings must be transformed, that is, the worm body becomes an empty shell and becomes flat after being pinched, but the quality of the cordyceps is reduced. At the right temperature, the mold spores in the air are scattered on the surface of the cordyceps, which will absorb the nutrients o...

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Abstract

The invention relates to a paper pulp mould product which is antimicrobial and rotproof, protects the environment and can be used for a long time. The technical point is to prepare the paper pulp mould product by using the paper pulp made of Chinese stellera roots. The paper pulp mould product has the advantages that the fiber flexibility is good, the product is not crisp, the product is antimicrobial and rotproof as well as mothproof and acid and alkali resistant, etc., is suitable for a long-time storage, has the natural straw yellow green color and is particularly suitable for storing valuables and valuable medical materials for a long time.

Description

Technical field [0001] The invention relates to a molded pulp product, in particular to a molded pulp product using Stellerachamejasme L. as a raw material, and a manufacturing method and application thereof. Background technique [0002] Pulp Moulded Products is a certain concentration of pulp, adding appropriate amount of chemical additives in the molding machine through a vacuum or pressure method to uniformly distribute the fibers on the mold surface, thereby forming a wetted product with a predetermined geometric shape and size. The paper mold blank is further dehydrated and demolded, and dried and shaped into a product. Industrial-grade pulp molded products mainly use waste paper and waste paperboard as raw materials. Products produced from waste paper with different compositions have different properties. Therefore, different waste paper or several types of waste paper can be used in combination according to the purpose of the product to obtain better economic benefits and...

Claims

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Application Information

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IPC IPC(8): D21H11/12D21J3/00D21D1/02
Inventor 张雪峰
Owner 张雪峰
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