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Method for making Arundo donax paper product

a technology of arundo donax and paper products, applied in the field of composite panels and engineered products, can solve the problems of inability to meet the needs of large-scale deforestation, and inability to produce good results, so as to achieve less binder and lighter color

Inactive Publication Date: 2005-06-16
NILE FIBER PULP AND PAPER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the supply of wood for use in these products is “renewable,” it requires setting aside land for long periods of time for tree farming.
Moreover, when demand outstrips supply, because supply is based on forecasts of decades before when trees were planted, then a shortage inevitably develops.
Since the wood required for these uses results in cutting millions of acres of forest each year, such shortages lead to serious worldwide concerns about large scale deforestation and its contribution to global warming.
Extensive research had been conducted and production trials have been made in an effort to find a suitable non-wood fiber for composites and pulp but, until now, this work has met with very little success due to inferior properties, excessive costs and many commercial production drawbacks.

Method used

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  • Method for making Arundo donax paper product
  • Method for making Arundo donax paper product
  • Method for making Arundo donax paper product

Examples

Experimental program
Comparison scheme
Effect test

example 1

Equipment Processes, and Methods for Nalgrass Size Reduction

[0067] In this example, cutting or macerating nalgrass, more specifically cutting nalgrass into particles that are suitable for processing into digested pulp or for efficient processing into composite panels and / or engineered wood products, is described.

[0068] Fairly sophisticated processing equipment has been developed over many years, by the forest and wood products industries, for size reduction of logs, sawmill shavings, waste lumber, etc. The equipment and handling methods have been designed to produce particles of specific geometry for use in modern digesters for the manufacture of pulp and in milling equipment for wood composites, namely, particleboard, oriented strand board (OSB), and medium density fiberboard (MDF). During the development work, several types and models of wood chippers and flakers were tested. The resulting particles were satisfactory for laboratory and pilot scale work but it quickly became evi...

example 2

The Formation of Representative Nalgrass Particle Boards

[0079] The protocol for manufacturing particle board of nalgrass, and of comparison materials, is described in this example.

[0080] Preparing the Furnish (Particles). Arundo donax stalks were chipped into pieces of approximately 2 to 3 in. long×¼ to ⅜ in. wide×0.03 in. thick in a Pallmann Drum Flaker, dried to 8% moisture, and then processed in a Prater Blue Streak hammermill with a ⅛ in. screen. Material from the mill was screened resulting in 32% through the screen to be used for face material and 68% on the screen to be used for core material.

[0081] For wood (southern pine) composite preparation, commercially obtained face and core material was used. The commercial face material was coarser than that used for nalgrass and wheatstraw so a portion of the wood face material was screened, using the same mesh screen as used for nalgrass.

[0082] For wheatstraw, the straw was processed through the Prater Blue Streak hammermill w...

example 3

The Formation of Representative Nalgrass / Southern Pine Particleboards

[0102] In this example, the formation of particle boards containing nalgrass / southern pine blends is described. The mechanical and physical properties of the particle boards compared to particle boards formed from (1) nalgrass and (2) southern pine.

[0103] Tests were conducted to compare the mechanical and physical properties of nalgrass, southern pine, and nalgrass / southern pine particleboard. For each furnish type, panels were manufactured with target densities of 42 lb / ft3 and 47 lb / ft3 and resin levels of 2% and 4%. All specimens were tested in static bending, internal bond strength, face and edge screwholding, water sorption, and thickness swell. Mechanical properties were compared with product specifications for medium density particleboard (ANSI A208.1-1993). See Table 2.

TABLE 2Grade Specifications of Medium Density Particleboard(National Particleboard Association ANSI A208.1-1993)MORMOEIBFSPESPGrade(psi...

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Abstract

Composite panels and pulp, and paper products of the pulp, are produced from Arundo donax. In the fabrication of the composite panels, Arundo donax is comminuted to a suitable size, combined with a binder, and consolidated into panels that meet standards for construction and / or furniture grade panels. The Arundo donax particulates may be combined with wood particulates to produce a mixed furnish that can be used in the preparation of composite panels. Comminuted Arundo donax is treated, in conventional pulping processes, to produce a high tensile strength pulp that can be used in the production of paper. The pulp has a lighter color than wood pulp, and thereby uses less bleaching chemicals to achieve a desired whiteness. The pulp can be combined with wood pulp to produce a variety of products.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation-in-part of copending international application number PCT / US99 / 13519, filed Jun. 16, 1999, which claims the benefit of the priority of the filing date of U.S. patent application No. 60 / 089,596, filed Jun. 17, 1998. The benefit of the priority of the filing dates of each is hereby claimed under 35 U.S.C. §§ 120 and 119, respectively. Each of the above-identified applications is incorporated herein by reference in its entirety.FIELD OF THE INVENTION [0002] The invention pertains to composite panels and engineered products made of Arundo donax (a type of grass), and pulp and paper produced from Arundo donax. BACKGROUND OF THE INVENTION [0003] There are several well-known technologies for producing particle board, using wood chips and other wood processing waste products. Indeed, these wood-based composite boards have found wide application particularly in building construction and the manufacture of furni...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B27N3/02B27J1/00B27L11/02B27L11/08D21B1/00D21B1/14D21C1/06D21C5/00D21C11/12
CPCB27J1/00B27L11/02B27L11/08B27N3/04D21H27/18D21B1/00D21C5/00D21C9/163D21H11/12C08J5/045Y10T428/249925D21B1/061D21H1/04D21H17/06D21H17/63
Inventor ALTHEIMER, ERNETT
Owner NILE FIBER PULP AND PAPER INC
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