PE plastic packaging film, is the choice of polyethylene film-level particles, by blowing or casting processing methods, processed into a thickness of 0.002-0.3mm film-like shape. With the popularization of plastic packaging products, PE plastic packaging film in the market share of larger and larger, widely used in hardware machinery, auto parts, logistics and express delivery, furniture, home appliances, food and medicine, clothing and chemical industries , These products have brought great convenience to people's lives.
Different types of plastic packaging film its performance is different, the choice of time we need in accordance with the plastic packaging film has some of the basic functions, mainly for the protection of goods, promotional features, the adaptability of packaging machinery and other applications Consideration of special needs, the following points 13, we call it a reference to 13:
1. Protection function
As a packaging material, plastic film protection of goods is the most important and most basic functions. Plastic film loses its value as a packaging material if it does not have a reliable protective effect on the packaged product, causing damage or devalue of the product. Plastic film on the protection of goods is multifaceted, different products, different forms of packaging, plastic packaging film protection features require the focus is not the same.
2 mechanical protection
To prevent the leakage of packaging materials or foreign substances into the packaging of the destruction of goods and pollution. Directly reflect the mechanical protection of plastic film performance indicators, mainly the film mechanical strength, such as tensile strength, tear strength, falling body impact strength (impact knocking) and puncture resistance and so on.
3. Good welding strength
Welding strength is also a necessary condition for the plastic film bag to reliably protect the goods. If the weld strength is insufficient, the weld will be the achilles' heel of a plastic film bag, which will cause the plastic bag to lose its protective effect on the product due to the rupture of the weld seam.
4. Barrier properties
Barrier properties refer to plastic film to prevent oxygen, carbon dioxide, nitrogen and other gases and aroma, water vapor and other substances through the performance, in the not clear range, mostly refers to the oxygen, carbon dioxide and nitrogen and other non-polar gas barrier. Plastic film on the display of good or bad and the film itself, the light transmittance, haze, gloss, antistatic properties, printing, etc. are very close, need to cause sufficient light transmittance and haze enough attention.
5. Light transmittance and haze
Light transmittance and haze determine the visibility and clarity of the packaged goods is an important indicator of the relationship between the display of goods is particularly large. Light transmittance and haze are expressed as a percentage, the greater the value of the light transmittance, the better the transparency of the film; and the greater the haze, the greater the haze of the object observed through the film, the worse the clarity.
Glossiness indicates the ability of a plastic film to reflect light in love, expressed as a percentage of the sample's reflected light in the specular direction relative to the standard surface.
With the rapid development of the electronics industry, electronic circuit boards become more and more integrated. Anti-static film packaging products to prevent electrostatic damage to integrated circuits.
8. Good slippery
Good slippery is conducive to the packaging film in the packaging line of smooth movement, to avoid its movement due to excessive resistance and damage. The slipperiness of the film can be described by its coefficient of friction. The smaller the coefficient of friction, the better slipperiness.
9. High temperature performance
Often need to consider is the film's high and low temperature properties, such as refrigeration, especially frozen foods using plastic packaging film, you need to have good low temperature performance; cooking food plastic packaging film, you need to have good high temperature performance and so on.
10. Health performance
When packaging food or medicine, the selected plastic packaging film must have good hygienic properties and comply with the requirements of relevant state sanitary standards to ensure that the plastic film will not cause any pollution to the packaged goods.
Air-tight, effectively blocking the exchange of gas inside and outside the packaging container, which is necessary for most products.
Good moisture resistance is an effective means to protect the goods, the general plastic film moisture resistance increases with increasing thickness, with the temperature decreases.
13. Oil resistance
For oily foods, such as sausage, bacon, etc., the packaging film must be oil-resistant, otherwise it will affect product quality.
Select PE plastic Packaging Film 13 Reference Standard
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