PVA coated high barrier film

classification：Q&A Release time：2023-04-27

PVA coated high barrier film is a multi-layer structure film composed of materials with strong gas barrier properties and polyolefins with strong thermal stitching and water barrier properties. PVA coated high barrier film is made by coating nano layered silicate modified PVA onto polyethylene film, printing, and composite, with an oxygen resistance rate of less than 2cm3/(m2 · 24h · 0.1MPa).

Its barrier performance is not only significantly superior to EVOH five layer co extruded film, but also significantly reduces packaging costs. This not only ensures all quality requirements for aseptic packaging for the packaged goods, but also significantly reduces the cost of aseptic packaging for food processing enterprises, solving the technical bottleneck of poor barrier performance of three-layer polyethylene co extruded packaging film. It can be used for packaging beverages, fruit juice, milk, soy sauce vinegar, etc.

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2023 04-27

The characteristics of PVDC film

The characteristics of PVDC coating film are obtained by coating one or more layers of polyvinylidene chloride (PVDC) latex on various film materials. Its excellent barrier performance is mainly manifested in the ability to reduce oxygen transmission hundreds or thousands of times, thereby greatly improving shelf life, freshness, aroma retention, oil resistance, and so on. Use specialized equipment to apply one or more layers of polyvinylidene chloride (PVDC) latex on various film materials, resulting in high barrier performance films. PVDC latex can be coated and processed on various film substrates such as BOPP, BOPET, BOPA, CPE, CPP, PVC, VMPET, etc., to produce different types of K coating films. And it has the same printability and composite properties as ordinary thin films, and can also have double-sided heat sealing performance as needed. The application of K coating is extremely extensive, with food and drug packaging as its main application areas. Generally speaking, using K coating film reduces the amount of materials used in packaging compared to ordinary PE film, paper, aluminum foil, etc., thus achieving the goal of reducing packaging and waste sources.

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2023 04-27

PVA coated high barrier film

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2023 04-26

Acrylic coated film

The biggest advantage of acrylic coating is its ability to heat seal at low pressure, which means it can be sealed at a lower pressure, so as not to deform the internal paper box under pressure. According to the online understanding of coating, acrylic acid can also provide a heat sealing window of 50 degrees Celsius (the temperature difference between the starting sealing temperature and the shrinkage temperature). The smaller the window range, the easier it is for the film to contract due to heat. Conversely, it can make the packaging flat and fit the paper box.

Perfume and some cosmetics containing natural essence will gradually evaporate over time, or be polluted by the fragrance of other products on the shelf, so odor barrier films are required for such products. Both acrylic acid and PVDC coatings have excellent gas barrier properties.

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