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Creping methods using ph-modified creping adhesive compositions

一种粘合剂、组合物的技术，应用在皱纹纸的制造领域，能够解决粘合剂聚集等问题

Inactive Publication Date: 2014-06-04
BUCKMAN LAB INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-rewettable adhesives can cause adhesive build-up on cylinder surfaces or cause other problems

Method used

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  • Creping methods using ph-modified creping adhesive compositions
  • Creping methods using ph-modified creping adhesive compositions
  • Creping methods using ph-modified creping adhesive compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] In this example, an adhesive base formulation was prepared comprising a polymer in an aqueous dispersion containing 5318 (commercial PAE creping adhesive (Hercules Inc.)) and 2097 (Beckman Laboratories International, Inc.) composition of mold release agents. The towel fiber sheet was creped using an 8 foot diameter Yankee dryer with a suction pressure roll. The pressure at the nozzle was about 108-110 psi, and the operating speed was adjusted from about 2600 feet per minute to about 2900 feet per minute (FPM). The machine is a semi-wet creping design with flat formers. The fiber sheet when transferred to the Yankee dryer has a moisture content of about 60-70% by weight and when the creped product is removed from the dryer the moisture content is about 15-20% by weight. Yankee dryer and mandrel speeds in feet per minute (FPM), pump settings, and dryer hood temperatures in degrees Fahrenheit (°F) were used in this study at image 3 indicated in the table. at about ...

Embodiment 2

[0111] A separate study was conducted on a 10 inch diameter Yankee dryer for creping napkin grade paper webs with a residence time of 22.5 milliseconds. A 10% by weight NaOH solution was fed into the mixing tank. Add about 10 ml / min of caustic. A similar composition of adhesive and release agent as used in Example 1 was also used in this example. The fiber sheet has a moisture content of about 60-70% by weight when transferred to the Yankee dryer and about 8-10% by weight when the creped product is removed from the dryer. Yankee dryer and reel speeds in feet per minute, pump settings, and Yankee temperature of 56°F were used in this study at Figure 4 indicated in the table. The initial pH was 5.9, then caustic was added to raise the pH to about 7.6. The coverage rate of 5318 adhesive can range from 3.1mg / m 2 Reduced to 2.4mg / m 2 (approximately 20% reduction) without streaks or chatter marks, and makes the release agent ( 2097) at 15.7mg / m 2 . An experienced technic...

Embodiment 3

[0113] A separate study was conducted on an 18-foot diameter Yankee dryer processing 12# tissue grade sheet with a moisture content of 12-14% by weight. A 10% by weight NaOH solution was added directly to the clean water in order to compensate for the concentration in the mixing tank. Add about 15-35 ml / min of caustic. In this example, an adhesive base formulation was prepared comprising a polymer comprising a composition of: in an aqueous dispersion, a commercially conditioned polyamine-type creping adhesive 2624 (Beckman Laboratories International) and release agent 2097. The fibrous sheet has a moisture content of about 65-70% by weight when transferred to the Yankee dryer and a moisture content of about 5-10% by weight when the creped product is removed from the dryer. The Yankee dryer speed is 4500-5500FPM, while the reel speed is 4000-4500FPM. The Yankee temperature is 180-210°F and the pressure is 90-110 psi. The initial pH is 5-6.5, and caustic is added to raise...

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Abstract

A method for manufacturing a creped fiber web is provided and includes providing a rotating cylindrical dryer surface, providing a creping adhesive composition or coating package having a pH boosted at least 0.5 pH units relative to its original base formulation pH in the range of from about 4.5 to about 9, for chemically setting a crosslinkable polymer component at least in part before applying the creping adhesive composition to the rotating cylindrical dryer surface to provide an adhesive dryer surface on which a fiber web can be transferred, dried, and creped.

Description

technical field [0001] This application claims the benefit of prior US Provisional Patent Application No. 61 / 513,716, filed August 1, 2011, under 35 U.S.C. §119(e), which is hereby incorporated by reference in its entirety. [0002] The present invention relates to the manufacture of crepe paper comprising a soft, absorbent tissue paper web, and in particular to the use of a pH adjusted creping adhesive composition to achieve sufficient moisture in the web. Softness and adhesion properties, and the way the web is creped enhances crepe performance. Background of the invention [0003] It is known in the art to form a tissue web from a slurry of water and fibers, dewater the wet web, and then at least partially dry the dewatered web. In the manufacture of tissue paper and similar paper products, creping is commonly used to impart desirable properties to such dewatered webs, such as softness and bulk. Creping is generally achieved by transferring or conveying the web on fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/14D21H23/60D21H19/16
CPCD21H23/60D21H21/146D21H19/16D21H23/64
Inventor P.沙利文J.艾伦
Owner BUCKMAN LAB INT INC
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