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Paper substrate containing a functional layer and methods of making and using the same

a functional layer and paper substrate technology, applied in the field of papermaking art, can solve the problems of cost and/or less efficient manufacture and/or conversion of the substra

Inactive Publication Date: 2008-11-06
INT PAPER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such demands from such markets may require functionalities to be programmed within the functional layer of paper substrate that, when the paper substrate is incorporated into a package, the functionality itself prohibit and / or make it costly and / or less efficient to manufacture and / or convert the substrate so as to be incorporated into a paper-based package.

Method used

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  • Paper substrate containing a functional layer and methods of making and using the same
  • Paper substrate containing a functional layer and methods of making and using the same
  • Paper substrate containing a functional layer and methods of making and using the same

Examples

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examples

[0066]Packagings for fruits and vegetables have had problems with their inability to protect their handlers and the produce contained therein from deadly predators. Accordingly, it has been desirable to treat the packages so that the environment, in which they lie, while in transit to the consumer, in part results in their exposure to sulfur dioxide.

[0067]Sulfur dioxide is known to kill predators of produce and pests of humans. One such pest is the black widow spider. It is necessary to keep black widow spiders away or dead when in contact with the produce package and environment. Therefore, it is desirable to have a packaging material for the product that does not absorb, adsorb, and / or chemically react with the sulfur dioxide in the shipping environment. Such interactions will inevitably reduce the amount of active sulfur dioxide within the environment; thereby reducing the efficacy of the killing / controlling pests sensitive to sulfur dioxide such as black widow spiders.

[0068]Unti...

example 2

[0085]Apply Dow latex based and starch coatings onto liner and medium which will be used to make corrugated boxes with improved SO2 / moisture barrier performance for grape packaging applications.

Basestock

[0086]69 BTWS (12,000 liner feet)[0087]62 ag (14,000 liner feet)[0088]2 rolls of 26c (total of 50,000 feet)

TABLE 9Coating FormulationCoating Formulation ACoating Formulation BChemicals(Station 1 - C2S coater)(Station 3 - C1S coater)Dow latex 229804100Cartabond TSI1.5NuClay100Ethylex 2035 Starch100Defoamer200 PPM100 PPMSolids   57-58%15%Target pH5-75-7Brookfield100-150TBDViscosity, #2 @ 100rpm (cps)Coater Operation*: Functional layer was applied via coater

TABLE 10Coating Conditions of Linerboard substrates and / of flutingCoatingA / Station 1 -B / Station 3 -ConditionsC2S coaterC1S coaterBase StockOven Temp.Liner FeetagePre-run 1C1S - side 162agTBDTry different rods,enough for Coatweight checkPre-run 2C2S62agTBDPre-run 3C1S - side 1C1S - side 262agTBD1C1S - side 162agTBD4,0002C2S62agTBD4,00...

example 3

[0091]The same as the proposed Box Construction Plan in Example 2, except a 74 lb paper substrate was put in to replace the 69 lb substrate. Condition 3 mentioned below was then converted to a package and / or box so as to be Box #3. Therefore, unless specifically mentioned otherwise below, the DuraCool box or International Paper box # 3 corresponds to a box that was made from Condition #3 mentioned below.

[0092]The above-mentioned box blanks were successfully converted to trays at the using Boix MP-S equipment using several hot melt adhesives with a cold glue assist. There were three major gluing scenarios, all of which produced well-bonded DEFOR Black Widow grape trays:[0093]1. The highest degree of initial fiber tear was obtained using the National 346601 hot melt. This adhesive was difficult to apply due to its high viscosity even at a gun temperature of 380 degree F. Timing adjustments were required on the Boix MP-S to accommodate the delays in getting it to feed through the Nords...

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Abstract

The invention relates to the papermaking art and, in particular, to the manufacture of paper or paperboard substrates, paper-containing articles such as multilayered paper or paperboard or corrugated-based packaging, having a functional layer, as well as methods of making and using the same.

Description

CROSS REFERENCE OF PRIOR APPLICATIONS[0001]The present invention is related to, and claims the benefit of 119(e) priority to U.S. provisional patent application Ser. No. 60 / 698,274; entitled “MULTILAYERED PAPER OR PAPERBOARD PRODUCT HAVING IMPROVED SULFUR DIOXIDE HOLDOUT”, which was filed on Jul. 11, 2005, and is hereby incorporated, in its entirety, herein by reference. This application is also related to and claims the benefit of 119(e) priority to U.S. provisional patent application Ser. No. 60 / 734,021; entitled “A PAPER SUBSTRATE CONTAINING A FUNCTIONAL LAYER AND METHODS OF MAKING AND USING THE SAME”, which was filed on Nov. 4, 2005, and is hereby incorporated, in its entirety, herein by reference.FIELD OF THE INVENTION[0002]The invention relates to the papermaking art and, in particular, to the manufacture of paper or paperboard substrates, paper-containing articles such as multilayered paper or paperboard or corrugated-based packaging, having a functional layer, as well as met...

Claims

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Application Information

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IPC IPC(8): D21H17/33
CPCD21H19/00
Inventor HONG, YAOLIANGYANG, SENSONG, JAY C.RUDOLPH, RICHARD F.MILLER, DEREK L.HUANG, YAN C.LIGUZINSKI, BENJAMIN THOMASBUCHER, EWA GERTRUDATAN, ZHENGKULKARNI, SANDEEPSHIH, KEITH S.
Owner INT PAPER CO