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THE HIGH DENSITY STORY
Ever wondered why two gallons of
milk can go into a very thin plastic grocery sack?
That was not possible before a class of resins were
developed known as high molecular weight (HMW) high
density polyethylene (HDPE) or high density for short.
High density polyethylene provides superior strength
and impact resistance at very thin gauges. Typically,
a high density film can match a low density film in
strength at about 60% of the gauge. For example, a low
density 1.0 mil film would perform much like a high
density .6 mil film.
Owing to its thinner gauge, high
density film can be rolled into longer rolls (typically
double the standard roll lengths) which results in:
1. Less changeover in the field,
thereby reducing the cost of application
2. Less material to dispose of at
the end of the crop
3. Fewer rolls needed resulting in
less freight, storage and handling
EMBOSSING
All
of Hilex films are embossed. Embossing came into
popularity in Florida about 25 years ago. Due to dramatic
temperature variations, any polyethylene will tend to
expand and contract. Embossing which is a permanent
pattern indentation in the surface of the film, absorbs
the plastic's expansion and contraction. Embossing enables
the film to stay tight on the bed in temperature variation.
This protects young plants from chaffing and protects
the plastic from blowing up in extremely windy conditions.
COLORS
Different colors of film provide
different benefits. Hilex offers a full line of colored
mulches and has been instrumental in the development
of several new technologies. Overall, the most common
colors of mulch film are black, white, and white-over-black.
Hilex offers all of these and several other options
including silver-over-black, clear, and red. The following
is a brief description of the advantages of each color:
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Black
Economical, provides weed control, warms soil |
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White
Coolest of all colors |
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White-Over-Black
Cooler than black, yet prevents more weed growth
than white |
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Silver-Over-Black
Reduces population of certain insects, weed inhibitor |
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Clear
Solarizes soil killing many soil-borne diseases
without fumigants |
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Red
Increases yield in certain vegetables |
HILEX PRODUCT SPECS
Range of Widths up to 72”
Typical Range of Gauges .4 mil -
1.0 mil
Colors Offered— Black, White, White-Over-Black,
Silver-Over-Black, Clear, Red
Typical Length of Rolls 4800' - 10,000'

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