US1880897A - Paper board shipping container or carton - Google Patents

Description

Oct. 4, 1932. R DREWSE'N 1,880,897

PAPER BOARD SHIPPING CONTAINER OR CARTON Filed March 3, 1930 INVENTOR ATTORNEYS knownpaper making process.

Patented Oct. 4, 1932 UNETED STATES PIERRE DREWSEN, OF SANDUS KY, OHIO, ASSIGNOR TO THE .H-INDE & DAIl'CH-PAPER ssessv rarest orrice COMPANY, OF SANDUSKY, OHIO, A CORPORATION OF OHIO PAPER BOARD SHIPPING CONTAINER OR CARTON Application filed March 3,

This invention relates topaper containers or cartons designed for the shipment of goods and which are liable to' exposure to the weatl spective view of the container; Figure 2 is a horizontal section through a corner por ion thereof.

My invention is based on the discovery of certain conditions in paper cartons usually manufactured which are incidental to the process ofmantifacture and the materials used in manufacture. Thus one prominent grade of shipping containers is made from corrugated board which is a combination of corrugated unsized straw paper, or other grades of paper, usually of .009 inch caliper, and liner board, which usually calipers .016 inch. Theadhesive used is silicate of soda, although other adhesives may be satisfactorily employed. .The straw paper is manufactured from wheat rye, oat, or other grades of straw bycooking them in digesters under steam pressure with anaqueous solution of lime, causticsoda, sodaash, sulphide of soda, or a combination 'of these alkalis, andthen subjecting the cooked material to the well The liner board is made largely from old papers. On the surface of the liner board is incorporated a layer of first use kraft pulp. The manufacture of this board is made on a multi-cylinder 'type paper machine in accordance with the well known art. The kra'ft pulp usually colored by means of coal tar dyestuffs wh ch are fixed on the fiber by the well known application of rosin size and alum. silicate of soda is manufactured by fusing at a' relatively high temperaturesand and soda ash, and as a commercial product, silicate of soda,

1930. Serial No. 432,976.

in solution, as used on the corrugating machines, contains an appreciable amount of strong alkali which is probably present inthe form of caustic soda.

\Vhen shipping containers, made by com-v bining the above mentioned unsized straw paper, liner board, dyestuffs, and silicate of soda, are soaked in or otherwise subjected to the action of water, the water becomes dis colored. If the contents of the shipping contain'er are of such a nature that they absorb or are otherwise affected by coloring materials, although not-necessarilyinjured by water alone, they would be appreciably damaged'i'f acted upon in-this manner. For

-- example, if the white tile previously referred to were shipped in a corrugated container of the usual type and it were soaked in water, the coloring matter from the box'would impregnate the unglazed portion of the tile, work its way through the interior of the .tiles and ultimately cause a discoloration immediately under the glazed exterior surface, which would render this product unfit for use. In setting these tiles the regular practise is to immerse thebox and contents in water and then apply the tile with plaster to the wall in the usual manner. If during this operation, the. work should be interrupted and the 'tile in the box should remain immersed for several'hours, as for instance, over night, the tile would develop this discoloration;

I have discovered that the liner board if -'uncolored when soaked in clean water will not discolor the water and therefore will not injure the'contents, but if there is present any dyestuf'f not entirely fast to water or any free alkali then discoloration takes place. Thus if in the manufacture of the carton silicate ,from either of these causes.

To overcome this defect, I employ in the manufacture of cartons a straw paper board which is' either free from dyestuff soluble in ,tained therein. Thus I have found straw paper sized with approximately 1% more or less of rosin size and sufficient alum to effect its precipitation acquires water repellent properties which enables it to resist water for long periods, as for instance, over night, and that such straw paper does not discolor clean water. I have further discovered that if colorless adhesive which is free or nearly free from alkali is used in the manufacture of the carton, no discoloration will take place as an incidentto wetting. Based upon these discoveries, my improved carton is formed from a straw paper board which of itself will not discolor water and-which in its manufacture is cemented by a colorless adhesive free or nearly free from alkali, such as starch paste. More specifically, my improved carton is one formed from sized straw paper board such as above referred to cemented by such a colorless adhesive free or nearly free from alkali, as starch paste. however,'that various other specific materials maybe substituted, both in the manufacture of the board and the adhesive, the essential feature being that the completed structure when soaked with water will not produce any 7 discoloration.

As specifically shown in the drawing, A is the outer container which is formed of double faced corrugated straw paper board B originally containing water soluble coloring matter but which has been rosin sized to render the same water resilient, as diagrammati- This liner is formed from a ,paper board which is free from water soluble coloring matter and thus as previously described the container may be soaked in water without danger of dissolving out any coloring mat v What I claim as my invention is:

1. A package comprising a content of tile or the like subject to discoloration when allowed to stand-in coloredjwater and a paper board shipping container for said tile free from accessible coloring matter soluble on immersion in water.

2. A package comprising a content of -til e It is obvious ter which will discolor or in ure the contents.

PIERRE DREVVSEN.

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