High density of polyethylene film. High Density of Film Polyethylene Unit of Measuring MKM Decoding

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1 meter [m] \u003d 1000000 micrometer [μm]

Source value

Transformed value

meter Exammeter Petametre Terameter Gigameter Megameter Kilometer Hectarette Decameter Decimeter Santimeter Millimeter Micrometer MICROON Nanometer Pitchometer Femmetometer Attometer Mega Parteek Keloparsk Parsek Light Year Astronomical Unit League Marine League (Brit.) Sea League (International) League (Stattering) Mile Mile (Brit.) Sea Mile (international) mile (statutory) mile (USA, geodesic) mile (Roman) 1000 yards Farlong Farlong (USA, geodesic) Chein Chain (USA, geodesic) Rope (English Rope) genus Rod (USA, geodesic) Perch Paul (English . Pole) Sea Sausage, Fata Salah (USA, Geodesic) Elbow Yard Foot Foot (USA, Geodesic) Link Link (USA, Geodesic) Elbow (Brit.) Hend Page Finger Neil inch (USA, Geodesic) Barley Grain (English. Barleycorn) Matchy Microad Angstrom Atomic Unit of Fermi Fermi Fermi Fermi Length Sweetheart Typographic Point Twip Elbow (Swedish) Marine Salad (Swedish) Caliber Santiduim Ken Arshin Actus (Dr. Rome) Vara de Tarea Vara Conu Quera Vara Castellana Elbow (Greek) Long Reed Reed Long Elbow Palm "Finger" Plank Length Classic Electron Radius Borovsky Radius Equatorial Earth Radius Polar Earth Radius Distance from Earth to Sun Radius Sun Light Nanosecond Light Microsecond Light Millies Light Speed \u200b\u200bLight Speed \u200b\u200bLight Day Light Week Light Billion Light Years Distance from Earth to Moon Cable Cables (International) Cables (British) Cables (USA) Sea Mile (USA) Light Minute Shirty Unit Horizontal Pitch Cicero Pixel Line Inch (Russian) Hell Pig Foot Southene Decoration Salad Merchand

Converter feet and inches in meters and back

foot inch

Thermal resistance

Read more about Length and Distance

General

Length is the greatest body measurement. In three-dimensional space, the length is usually measured horizontally.

The distance is the value that defines how much two bodies are removed from each other.

Distance and length measurement

Units of distance and length

In the system, the length is measured in meters. Derived values \u200b\u200bsuch as kilometer (1000 meters) and centimeter (1/100 meters) are also widely used in the metric system. In countries where they do not use the metric system, for example, in the United States and the UK, such units are used as inches, feet and miles.

Distance in physics and biology

In biology and physics, the length is often measured by a much less than one millimeter. For this, a special value is adopted, micrometer. One micrometer is 1 × 10 × meter. In biology in micrometers, the magnitude of microorganisms and cells is measured, and in physics - the length of infrared electromagnetic radiation. The micrometer is also called microns and sometimes, especially in English literature, designate greek letter μ. Other derivatives are widely used: nanometers (1 × 10 × meter), Pitchometers (1 × 10⁻⁻² meter), femometters (1 × 10 ⁻⁻ × meter and attometers (1 × 10 ⁻ ⁻ ⁸ π).

Distance to Navigation

Sea miles use shipping. One sea mile is 1852 meters. It was originally measured as an arc in one minute by meridian, that is, 1 / (60 × 180) meridian. This facilitated the latitude computation, since 60 maritime miles were one degree of latitude. When the distance is measured in marine miles, speed is often measured in marine nodes. One sea knot is equal to the speed of movement into one marine mile per hour.

Distance in Astronomy

In astronomy, long distances are measured, therefore special values \u200b\u200bare adopted to facilitate computations.

Astronomical unit (a. e., Au) is equal to 149,597,870,700 meters. The magnitude of one astronomical unit is a constant, that is, a constant value. It is believed that the land is from the Sun at a distance of one astronomical unit.

Light year equal to 10 000 000 000 000 or 10¹ ³ kilometers. This is the distance that lights in Vacuum for one Julian year. This value is used in popular science literature more often than in physics and astronomy.

Parsec Approximately equal to 30 856 775 814 671 900 meters or approximately 3.09 × 10¹³ kilometers. One parsec is the distance from the Sun to another astronomical object, such as planets, stars, moon, or asteroid, with an angle of one angular second. One angular second is 1/3600 degrees, or approximately 4.8481368 MKRD in radians. Parsek can be calculated using pararallax - the effect of visible change in the position of the body, depending on the observation point. When measuring the segment E1A2 (on the illustration) from the Earth (point E1) to a star or another astronomical object (point A2) is packed. Six months later, when the sun is on the other side of the Earth, they launch a new segment E2A1 from the new position of the Earth (point E2) to the new position in the space of the same astronomical object (point A1). At the same time, the sun will be on the intersection of these two segments, at the point S. The length of each of the segments of E1S and E2S is equal to one astronomical unit. If you postpone the segment via the point S, perpendicular E1E2, it will pass through the intersection point of E1A2 and E2A1 segments, I. The distance from the Sun to the point I - Si segment, it is equal to one partare, when the angle between the segments A1i and A2i are two angular seconds.

On the image:

A1, A2: Visible Star Position
E1, E2: Earth's position
S: Sun position
I: intersection point
IS \u003d 1 parse
∠P or ∠xia2: parallax angle
∠p \u003d 1 angular second

Other units

League - An outdated unit of length used earlier in many countries. In some places it is still used, for example, on the Yucatan Peninsula and in rural areas of Mexico. This is the distance that a person passes in an hour. The maritime league is three nautical miles, about 5.6 kilometers. League is an approximately equal to the league. IN english language And Lie, and the leagues are called the same, League. In the literature, Lie is sometimes found in the name of books, such as "20,000 Lei under water" - the famous Roman Julie is true.

Elbow - an old value equal to the distance from the tip of the middle finger to the elbow. This value was widespread in the ancient world, in the Middle Ages, and before the new time.

Yard Used in the British imperial system of measures and is equal to three feet or 0.9144 meters. In some countries, for example, in Canada, where the metric system has been adopted, yards are used to measure the tissue and the length of the pools and sports fields and sites, such as golf courses and football.

Meter definition

The meter definition changed several times. Initially, the meter was determined as 1/10,000,000 distances from the North Pole to the equator. Later meter was equal to the length of platinumridium reference. Later, the meter was equal to the wavelength of the orange line of the electromagnetic spectrum of the crypton atom ⁸⁶kr in vacuo multiplied by 1 650 763.73. Today the meter is determined as a distance traveled by light in Vacuum for 1/299 792 458 seconds.

Calculations

In geometry, the distance between two points, A and B, with coordinates A (X₁, Y₁) and B (X₂, Y₂) are calculated by the formula:

And within a few minutes you will receive an answer.

Calculations for the translation of units in the converter " Length and distance converter»Performed using unitconversion.org functions.

By parameters, photos, cost.

One of the main properties of polyethylene is its density. In solid polyethylene, it is approximately 940-960 g / m3. Such high is achieved by polymerization with system catalysts. Such material is called polyethylene high pressure. This is a hard thermoplastic, which is used in injection molding and blown molding.

The main properties of this class of polyethylene should include good chemical resistance, minimal water absorption, good extensibility, elasticity and resistance to temperature drops in the range from -70 to +100 degrees. The material is easily recycled and welded very well.

From high density polyethylene film make bags for non-food products, pipes for C / h work, packaging material. In particular, filling packages make stacking bags, bags with cutting handle, garbage bags, air-bubble film.

In everyday life, the product is used in the construction of greenhouses, summer cafes and soul (for such objects, a color opaque film is used). It is characteristic that when exposed to high pressure film, it is easily applied to various surfaces - Cardboard, paper, foil, etc. Surfaces on which PVD are applied, moisture resistant and waterproof are quite strong.

PND polyethylene films have good electrical insulating qualities (in some varieties of film, electrical density reaches 150kV / mm). With an increase in film density, such quality parameters as durability, rigidity, chemical stability increases. Thus, it can be concluded that high polyethylene film density Provides a number useful qualities. If you need such a film, please contact Lentapak.

Low polyethylene density in the form of a film

Today, one of the most popular materials among customers - polyethylene low density. As is known, low is determined by the number of branches per 100 carbon atoms. The level of crystallinity of molecules is 50-70%.

The temperature softening of low density film is significantly less than the temperature of boiling water. Therefore, this type of film cannot be used in conjunction with hot water or ferry. Low density polyethylene is distinguished by plasticity, mattness. Its density fluctuates in the range of 0.915 - 0.936 g / cm3. Films this type It is easy to weld heat welding, they form strong seams. It is possible to glue the film using tape and adhesives from half a bull. On the material after pre-training It is possible to apply print.

Film coatings with low pressure are quite well tolerated, resistant to loads on the gap and stretching. Different with resistance and temperature differences (from -50 to +10 degrees). Waterproof films, however, have a weak resistance to oxidation, so unsuitable for packaging of certain types of products. Good chemical resistance at low fat and oil resistance slightly limits the contact of this type of film with defined fluids.

Low density polyethylene is often used in the manufacture of packages, wrapping packaging, bags. In the manufacture of packages for the purchase is used, mainly film from 20 to 60 μm. A small density still does not mean that the film is continuing. The use of additives can significantly increase the strength of the products. For small capacity packages, a film is used to 10 microns thick. Thus, we see that polyethylene density in the form of a film It is one of the main parameters.

High density of polyethylene film kg M3 (PVD production)

High pressure film requires high pressure modern methods Her production. The manufacture of polyethylene film takes place in extruders. Necessary polyethylene film density (kg / m3) It is achieved by adding granular and in the form of high-pressure polyethylene powder. Next, the viscous mass is blowing out of the extruder on a special receiver. The film has a circular and flat cross section.

Highlights of production

Polyethylene granules fall into the receiving bunker. Special additives are used to increase the properties of the material. Next, the polymer falls on the surface of the auger. In the course of the rotation of the auger, the material begins to heat and melt. As soon as the alloy becomes homogeneous, it is extruded. After passing the head, the product is obtained by the desired form.

To get the sleeves, the blank must pass through a special slot and swell to of the desired size. The diameter and thickness of the sleeve can be adjusted by specifying the amount of air supplied. The canvas turns out of the sleeve - cutting it directly from both sides, half a bowl - with one. The resulting sleeve must be cooled and then go through the reception device, after which the film is wounded into rolls.

All stages are carefully controlled. In particular, you need to monitor temperature and pressure, as well as color (if color film is made). A high-quality film provides a uniform thickness throughout the area of \u200b\u200bthe canvas, the "correct" color, the absence of folds and chances, smooth and dense winding. Checked polyethylene film density (kg / m3) denneter by different sites. If you need polyethylene filmPlease contact Lentapak.

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