Methods To Control Organic Contaminants In Fibers

a technology of organic contaminants and fibers, applied in the field of papermaking processes, can solve the problems of inefficiency, maintenance problems and production inefficiencies, need to bleach fibers, and difficulty in controlling or removing them,
US20130180677A1Inactive Publication Date: 2013-07-18BUCKMAN LAB INT INC
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
BUCKMAN LAB INT INC
Publication Date
2013-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

Methods to control organic contaminants in fibers are described. One method involves contacting the fibers with a) diatomaceous earth and b) detackifier, or an ester hydrolyzing enzyme, or both, for a sufficient time and in a sufficient amount to control the organic contaminants present in the fibers. This method is effective to reduce stickies in paper mill furnish formed with recycled fibers. A method for pitch control in paper mill furnish formed with virgin fibers is also provided. Resulting paper products formed from the processed fibers are also described as well as methods to make them.
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Description

[0001] This application claims the benefit under 35 U.S.C. §119(e) of prior U.S. Provisional Patent Application No. 61 / 585,684, filed Jan. 12, 2012, which is incorporated in its entirety by reference herein.BACKGROUND OF THE INVENTION

[0002] The present invention relates to papermaking processes and more particularly relates to controlling the organic contaminants present in certain types of fibers used to make paper or similar types of fiber containing products.

[0003] Organic contaminants are present in paper pulp that tends to deposit on processing surfaces and equipment, causing maintenance problems and production inefficiencies. Organic contaminants of significant concern in this regard include “stickies” and pitch, with the former generally associated with recycled pulp sources while the latter with virgin pulp supplies.

[0004] Conventional recycling of old paper products such as old newsprint, old corrugated containers, and mixed office waste is an important aspect of paper mills to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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