2016년 12월 18일 일요일

PE laminated vacuum packaging papers

Ekahn's PE laminated vacuum packaging papers

This category have several grade according to customer's need,
P-1, P-2 and P-3.
Each grade has been graded on permeability of huminity, how well block from vapor barrier.
It cosist of Pe(LD)+woven cloth+Pe(HD) and aluminum foil.
So it keeps products from humidity and temperature with anti-rust function.
Also specially well function against sun light and radiant barriers.

How it works
A. Aluminum foil woven fabric is environmental friendly. It contains no hazardous chemicals or harmful materials that cause itching or respiratory problems. Also, it emits no formaldehyde or volatile organic compounds, ensuring healthy indoor environment. 
B. As compared with other types of aluminium foil insulation material, this product offers higher tensile strength, and higher tearing resistance. 
C. It is anti abrasion, anti aging, light weight, and flexible and easy to handle. D.This is very cost effective for waterproof type building material. 
E. Coming in woven fabric form, the product can be sewed together easily and conveniently installed on long span buildings.

Made of single or double-faced aluminum foil with a reinforcement of PE / PP woven fabric to enhance tensile strength, tear resistant, and durability Patidar alum woven facing that can be easily torn down unlike other foil-faced material such as Kraft paper, PE bubble and PE foam reflective insulation that can be easily torn down. This woven foil insulation has tough and tear-proof features,  reflecting foil as surface backed woven fabric which is a strong fabric, suit to application in house to barrier radiant and proof moisture. Its high tear strength, flexibility, light weight, and waterproof properties.

2016년 12월 14일 수요일

Aluminium foil (or aluminum foil) for packaging



Aluminium foil (or aluminum foil), 

더블클릭을 하시면 이미지를 수정할 수 있습니다
 
often referred to with the misnomer tin foil, is aluminium prepared in thin metal leaves with a thickness less than 0.2 mm (7.9 mils); thinner gauges down to 6 micrometres (0.24 mils) are also commonly used.[1] In the United States, foils are commonly gauged in thousandths of an inch or mils. Standard household foil is typically 0.016 mm (0.63 mils) thick, and heavy duty household foil is typically 0.024 mm (0.94 mils). The foil is pliable, and can be readily bent or wrapped around objects. Thin foils are fragile and are sometimes laminated to other materials such as plastics or paper to make them more useful. Aluminium foil supplanted tin foil in the mid 20th century.
 
Annual production of aluminium foil was approximately 800,000 tonnes (880,000 tons) in Europe[1] and 600,000 tonnes (660,000 tons) in the U.S. in 2003.[2] Approximately 75% of aluminium foil is used for packaging of foods, cosmetics, and chemical products, and 25% used for industrial applications (e.g. thermal insulation, cables and electronics).[2] It can be recycled.
 
In North America, aluminium foil is known as aluminum foil. It was popularised by Reynolds Metals, the leading manufacturer in North America. In the United Kingdom and United States it is, informally, widely called tin foil, for historical reasons (similar to how aluminium cans are often still called "tin cans"). Metallised films are sometimes mistaken for aluminium foil, but are actually polymer films coated with a thin layer of aluminium. In Australia, aluminium foil is widely called alfoil.
 
 
How to make it


 

Aluminium foil is produced by rolling sheet ingots cast from molten billet aluminium, then re-rolling on sheet and foil rolling mills to the desired thickness, or by continuously casting and cold rolling. To maintain a constant thickness in aluminium foil production, beta radiation is passed through the foil to a sensor on the other side. If the intensity becomes too high, then the rollers adjust, increasing the thickness. If the intensities become too low and the foil has become too thick, the rollers apply more pressure, causing the foil to be made thinner.
 
The continuous casting method is much less energy intensive and has become the preferred process. For thicknesses below 0.025 mm (1 mil), two layers are usually put together for the final pass and afterwards separated which produces foil with one bright side and one matte side. The two sides in contact with each other are matte and the exterior sides become bright; this is done to reduce tearing, increase production rates, control thickness, and get around the need for a smaller diameter roller.
 
Some lubrication is needed during the rolling stages; otherwise, the foil surface can become marked with a herringbone pattern. These lubricants are sprayed on the foil surface before passing through the mill rolls. Kerosene based lubricants are commonly used, although oils approved for food contact must be used for foil intended for food packaging.
 
Aluminium becomes work hardened during the cold rolling process and is annealed for most purposes. The rolls of foil are heated until the degree of softness is reached, which may be up to 340 °C (644 °F) for 12 hours. During this heating, the lubricating oils are burned off, leaving a dry surface. Lubricant oils may not be completely burnt off for hard temper rolls, which can make subsequent coating or printing more difficult.
 
The rolls of aluminium foil are then slit on slitter rewinding machines into smaller rolls. Roll slitting and rewinding is an essential part of the finishing process.
 
 
 
What is so special
 
Aluminium foils thicker than 25 µm (1 mil) are impermeable to oxygen and water. Foils thinner than this become slightly permeable due to minute pinholes caused by the production process.
 
Aluminium foil has a shiny side and a matte side. The shiny side is produced when the aluminium is rolled during the final pass. It is difficult to produce rollers with a gap fine enough to cope with the foil gauge, therefore, for the final pass, two sheets are rolled at the same time, doubling the thickness of the gauge at entry to the rollers. When the sheets are later separated, the inside surface is dull, and the outside surface is shiny. This difference in the finish has led to the perception that favouring a side has an effect when cooking. While many believe (wrongly) that the different properties keep heat out when wrapped with the shiny finish facing out, and keep heat in with the shiny finish facing inwards, the actual difference is imperceptible without instrumentation. Increased reflectivity decreases both absorption and emission of radiation. Foil may have a non-stick coating on only one side. The reflectivity of bright aluminium foil is 88% while dull embossed foil is about 80%.
 
 
Using for package


 
Aluminium is used for packaging as it is highly malleable and can be easily converted to thin sheets and can be easily folded, rolled and packed. Aluminium foil acts as a total barrier to light and oxygen (which cause fats to oxidise or become rancid), odours and flavours, moistness, and germs, and so it is used broadly in food and pharmaceutical packaging. The purpose of aluminium is to make long-life packs (aseptic packaging) for drinks and dairy goods, which allows storing without refrigeration. Aluminium foil containers and trays are used to bake pies and to pack takeaway meals, ready snacks and long life pet foods.
 
Aluminium foil is widely sold into the consumer market, often in rolls of 500 mm (20 in) width and several metres in length.[11] It is used for wrapping food in order to preserve it, for example, when storing leftover food in a refrigerator (where it serves the additional purpose of preventing odour exchange), when taking sandwiches on a journey, or when selling some kinds of take-away or fast food. Tex-Mex restaurants in the United States, for example, typically provide take-away burritos wrapped in aluminium foil.
 






(https://en.wikipedia.org)

2016년 12월 12일 월요일

What is Pe Laminated VCI paper



What is Pe Laminated VCI paper



How it works
1) Creates protective environment in enclosed areas.
2) Forms a molecular layer of protection on meatal surface.
3) Insulates metal surfaces from corrosion-causing contaminants.

How to use : 
1.The poly coated paper shall contact the articles for antirust as closely as possible, without any barriers between them.

2.Before being packed, the surfaces of the articles for antirust shall remain clean and dry without impurities on them.

3.In case the surfaces of the articles for antirust are regular in their shape, the articles can be completely covered individually with the VCI paper (the utilization area of VCI paper shall be about the same as the surface area of the article) and then their joints shall be sealed. VCI paper can also be used as inner lining or interlayer packing paper in a sealed packaging unit (container, plastic bag, etc.).

4.Operate with clean gloves, and do not contact this paper with naked hands.

Why use our Pe Laminated VCI paper
1.The paper makes oil-free packaging available, and no coating, degreasing or cleaning procedure is required, which saves labor, time and cost.
2.VCI with high performance contained uniformly in the antirust paper will play a role of antirust soon after it is sealed in a package.
3.Even if the paper does not contact the metal directly, it can effectively perform the function of antirust, so it is especially applicable to metal products with complex appearance.
4.The paper has both functions of antirust and packaging.
5.The paper has the advantages of low cost and easy operation over vacuum package.
6.The paper is clean, harmless and non-toxic, so it is safe to environment. It passes SGS certification and meets RoHS directives.

Overall features

This paper is enhanced with polyethylene coating on one side, to provide a moisture barrier,increased tear resistance and resistance to moisture,oil and grease.,plus powerful VCI corrosion inhibitors,get antirust protection for metal in an enclosed package.
It is used to package and protect kinds of metals and these parts to be protected can be painted, welded directly. Use VCI Kraft Poly Paper protect metal materials for shipment or storage, or in any other application where anticorrosion packaging would be used.
Pe Laminated VCI paper (corrosion terminator)VCI poly coated paper is a kind of kraft paper coated with a polyethylene layer containing VCI corrosion inhibitors, provides superior corrosion protection for both ferrous metals such as iron, cast iron, steel and non-ferrous metals in the industry. 

Applicable Metals:
It is applicable to ferrous metal, alloy steel, cast iron, copper, brass, bronze, plated metal, zinc and its alloy, chrome and its alloy, cadmium and its alloy, nickel and its alloy, tin and its alloy, aluminum and its alloy, and other metal materials and their products.


Category:
  Base paper 70g / sm
  Base paper 60g /sm
  Base paper 55g /sm
  Base paper 85g /sm
  Base paper 85g /sm
  Base paper 110g /sm
   

Volatile corrosion inhibitors (VCI)





Volatile corrosion inhibitors (VCI)
 are a type of corrosion inhibitor that are used to protect ferrous materials and non ferrous metals against corrosion or oxidation where it is impractical to apply surface treatments. They slowly release compounds within a sealed airspace that actively prevents surface corrosion. A typical application is to protect stored tools or parts inside bags, boxes or cupboards, one advantage of VCIs being that if the container is opened and reclosed, levels of inhibitor will recover.

The history of VCI's
also known as VpCI's began in the 1940's when Shell Petroleum developed the very first of the traditional VCI's using a chemical compound called DICHAN or Dicyclohexylammonium Nitrite. This was used by the US military to prevent various metal components from corrosion and used it in multiple formats such as VCI paper, VCI powder, VCI solutions etc. Due to the dangerous nature of the chemistry DICHAN is now a mostly banned substance and there was a distinct break in the development of VCI's into two major groups of nitrite based VCI's and Amine based VCI's. The inclusion of either nitrite, secondary and tertiary amines is now frowned upon in the packaging world as combinations of these types of chemicals can cause Nitrosamines which are cancer forming agents.


Product uses
VCI chemicals are often added to paper and plastic substrates as a medium to deliver the protective chemical compounds for use in automotive packaging, steel packaging, metal packaging, military and hobby markets.

Ekahn

Address : 156-142, Naesong-ri, Geumwang-eup, Eumseong-gun, Chungchengbuk-do, Korea
TEL : +82 2 922 6000
Mobile : +82 10 6744 3858

E-mail : drimtru@daum.net