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Process for forming crimps or folds on a molded fiber pulp product and equipment

A technology of fiber pulp and products, applied in the direction of non-fiber pulp addition, fiber raw material processing, textile and paper making, etc.

Pending Publication Date: 2021-03-09
SABERT ZHONGSHAN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is considerable evidence that there are no rolled edge paper cups with a wall thickness of more than 1.5mm on the market

Method used

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  • Process for forming crimps or folds on a molded fiber pulp product and equipment
  • Process for forming crimps or folds on a molded fiber pulp product and equipment
  • Process for forming crimps or folds on a molded fiber pulp product and equipment

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Experimental program
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Effect test

Embodiment Construction

[0052] The present invention provides a new process and apparatus for forming curls or hems on molded fiber slurry articles.

[0053] Fibrous pulp materials include, for example, bagasse, bamboo, wheat straw, and other natural organic materials with fibers suitable for making molded pulp products. The stiffness of a molded fiber slurry product is affected by the vertical and circumferential tension and bending stiffness of the product. According to embodiments of the present invention, mixed fiber size materials can be used to achieve better performance in edge formation. Ingredients include (based on total weight of ingredients):

[0054]

[0055] The lignin of the mixed fiber pulp material can be in the percentage range of about 0.5% to about 25% (again based on the total weight of the ingredients). The test method for measuring the percentage of lignin is in accordance with GB / T747-2003 or GB / T10337-2008.

[0056] Also, there is no limitation on the additives used to ...

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Abstract

The invention relates to processes for forming crimps or folds on molded fiber pulp product and equipment and the product formed by the processes and equipment. The process comprises the steps of pre-treating the molded fiber pulp product with a chemical solvent to temporarily reduce rigidity of an edge portion of the molded fibrous pulp product, and crimping or folding edges on the molded fiber pulp product. The equipment for forming the crimps or the folds on molded fibrous pulp product includes a motion mechanism with a pre-treatment station for pre-treating the molded fibrous pulp productwith the chemical solvent to temporarily reduce the rigidity of the edge portion of the molded fibrous pulp product, and a forming mechanism for crimping or folding the edge of the molded fiber pulp product. Compared with a product with a flat edge, the process and equipment can improve the strength and rigidity of the molded fiber pulp product and reducing mass.

Description

[0001] This application is a branch of the Chinese patent application with the application number 201310443234.9, the application date is September 26, 2013, and the invention title is "process and equipment for forming curling or hemming on molded fiber slurry products". case application. technical field [0002] The present invention generally relates to processes and apparatus for forming curls or hems on molded fiber slurry articles. Background technique [0003] Molded fiber pulp products are made from by-products of organic plants such as bagasse, bamboo, wheat straw, etc. Due to the characteristics of these raw materials, the edges of traditional molded fiber slurry products are flat (such as Figure 4 shown). The gauge at the rim is close to or nearly the same as the gauge of the body of the article, and as a result, the flat rim does not provide sufficient strength to cooperate with the lid to achieve a tight seal. The flat edge also creates an uncomfortable feeli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B31F5/02D21H11/12D21H17/23D21H21/16D21H21/14
Inventor 黄锦耀
Owner SABERT ZHONGSHAN LTD