Even pouring rain can't harm these heavy-duty polyethylene shipping bags, pioneered by Spencer Chemical Co. Here hygroscopic ammonium nitrate is being

stacked in open field during recent rainy season. Also,

two years of tests show 25 to 50% less bag breakage with polyethylene compared to kraft paper.

Read why Spencer Chemical Company has decided to use

Heavy Duty Polyethylene Bags To Ship Thousands of Tons of Fertilizer:

Two years of tests show bags give complete moisture protection, cut bag breakage to 0.77% or less • . ,

Many large-scale industrial shippers

will be interested in Spencer Chemical Company's decision to trust their own products to a new heavy duty polyethylene shipping bag. For this decision is the best possible proof of Spencer's own faith in that bag, pioneered by Spencer over a two-year period.

This fail Spencer will start shipping thousands of tons of "Mr. N"� Ammonium Nitrate in 10-mil polyethylene bags. It was an important decision, made only after a series of grueling tests.

In over 2½ million lbs. of shipments of "Mr. N,"� only 0.77% of 51,240 bags were broken. In a test involving shipments of polyethylene resin,

breakage was only 0.72% less than half of kraft paper's 1.5%.

Material loss is slight, even when bags are broken. For instance, one dealer reported the loss from eight broken bags in a car of fertilizer was less than one quart. Further,

broken bags can be easily repaired with pressure-sensitive tape.

Completely moisture-proof, these bags can be stacked in an open field, even in pouring rain. This feature is of major importance, not only to "Mr. N,"� but to nearly all hygroscopic products. It means, too, that feeds and food products can be stored for months with practically no moisture loss.

These bags are easy to heat-seal.

Fifty pound bags of ammonium nitrate can be filled and sealed at the rate of 16-20 bags per minute per machine a speed comparable to rate for 50 pound paper bags. All bags are corrosion-proof, non-toxic, and contamination-proof.

If you're an extruder, find out more about Spencer "Poly-Eth"� Poly-

Paekaging Institute'* 20th Annual

National Packaging Forum Oct. 13, 14, 15, 1151

Edgewater Beach Hotel Chicago, III.

ethylene, the super-tough resin used in pioneering these new bags. If you're a packager, ask where you can get these extra-protective bags for your own product. See a Spencer salesman or write to Market Development Section, Spencer Chemical Co., Dwight Bldg., Kansas City 5, Mo.

SPENCER CHEMICAL COMPANY

Dwight Building . . . Kansas City 5, Missouri