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China's polyester industry is developing rapidly, among which polyethylene terephthalate (PET) is widely used to produce spelling, fiber, film and other products. Because of its excellent physical and chemical properties, PET film is widely used in the field of food packaging. However, its monomers, catalysts and other additives, including by-products, are highly toxic substances, and there is a risk of migration. With the progress of petrochemical technology, China has developed rapidly in the polyester industry, and has now become the world's largest production base for polyester products. Among them, polyethylene terephthalate (PET) is widely used in the production of bottles, fibers, and films due to its excellent rigidity, heat resistance, electrical insulation and chemical resistance. PET film has a wide range of uses in electronics, food packaging, and photosensitive materials. Commonly used synthetic methods of PET include the direct esterification method of terephthalic acid (PTA) and ethylene glycol (EG) (PTA method) and the transesterification method of dimethyl terephthalate (DMT) and ethylene glycol (DMT). Law). In the process of polycondensation, PET needs to add catalysts (such as antimony trioxide), stabilizers and other additives or assistants. At the same time, there are by-products (such as diethylene glycol, acetaldehyde and some oligomers) during the esterification reaction. ), and some of these substances are toxic, and will migrate to the contents through packaging materials during contact with food, which will lead to contamination of the contents and further affect the health of consumers. Dong-Joo Kim et al. studied and analyzed the special migration of monomers and oligomers in PET in accordance with the regulations of the European Union and Asian countries. Countries around the world (the European Union, the United States, China, Japan, etc.) have respectively formulated corresponding regulations for the hygiene and safety requirements of PET used for food packaging materials, and stipulated maximum migration limits and restrictions on use requirements for substances with migration risks. Food contact PET hygiene and safety requirements related laws and regulations introduced PET film has excellent physical and chemical properties, such as high strength, good transparency, non-toxicity, good barrier properties, and excellent electrical insulation properties, so it is widely used in the field of food packaging. However, its monomers, catalysts and other additives, including by-products, are highly toxic substances, and there is a risk of migration. Countries around the world have formulated corresponding standards for the hygiene requirements of PET for food contact. Polyethylene terephthalate (PET) commonly used synthetic methods include direct esterification method (PTA method) and transesterification method (DMT method). Because of its excellent physical and chemical properties, it is widely used in food Packaging field. However, the catalysts, stabilizers and other additives or auxiliary agents used in the polycondensation reaction of PET, including the by-products produced by the reaction, have caused widespread concern due to their toxicity and migration risk. The European Union, the United States, China, Japan, etc. have formulated corresponding regulations for the hygiene and safety requirements of PET used for food packaging materials, thereby effectively regulating the development of PET in a healthier and safer direction. It is a company specializing in the production of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, supply of PET motor film, etc. With a wide variety of products, affordable prices, and environmental protection, we provide customers with excellent quality and service based on the service tenet of excellence in production, honesty and trustworthiness in distribution, and warm and thoughtful service. Interested parties welcome to inquire! Contact: Wen Feng 13728425799

As a release film manufacturer, polyester film is an indispensable material. What kind of film is PET film? What is the use of PET film? Let's take a look today. PET film is also called high temperature resistant (polyester) pet film. It has high stability in physical and chemical properties, high transparency, recyclability, and a wide range of applications. Specific application areas include magnetic recording, photosensitive materials, electronics, electrical insulation, industrial films, packaging and decoration, screen protection, optical mirror protection, etc. The types of pet film are distinguished by function: PET film (original film) and functional film after secondary processing of PET film, such as (PET release film, PET high-bright film, PET transfer film, PET reflective film, PET antistatic film, PET heat Sealing film, PET heat shrinkable film), etc. The advantages of pet film: (1) good transparency, light transmittance not less than 92%, and gloss; (2) air tightness and fragrance retention; (3) ③pet film has excellent mechanical properties, showing high strength, High toughness, high tensile strength and high impact strength. Suitable for secondary processing. ④pet film also has excellent heat resistance, cold resistance, chemical resistance and oil resistance. Defects of pet film: (1) not resistant to strong alkali; (2) easy to carry static electricity, anti-static is an important subject of research and development ③ moderate moisture resistance, lower moisture permeability at low temperatures.

Regarding the die-cutting process, the release film usually encounters the following problems: 1. After the double-sided tape is attached to the PET release film, some of the double-sided tape will peel off and make a strange sound when peeling off. 2. Anti-peeling means that the peeled material is not peeled off. 3. The tape and release film cannot be peeled off after being punched and placed for a period of time. 4. The release force of the release film is very low, and the release layer feels easy to fall off. 5. The release film will generate static electricity during the winding process and attract dust. For the above-mentioned problems, there are usually the following solutions: 1. Noise occurs during peeling, one is the excessive release force, and the second is the result of uneven coating. 2. The anti-peeling is mainly caused by the unsatisfactory combination of release force. There are two reasons. First, the release film's factory inspection is not strict, the inspection equipment is incomplete, and the production process is not stable enough, which makes the same type of product release force. Too much difference. As a result, the die-cutting factory used the release film with the release force they thought out of the habit of use. Secondly, the weather resistance of the release layer is not enough, and huge changes have taken place over time. 3. It cannot be peeled off after being attached to the tape. Generally, it is the cause of uneven coating. Some release film missed more severely will make a certain part of the release effect, and the tape cannot be peeled off. The die cutting of the round knife should Very taboo about this issue. 4. The greasy release surface is mainly caused by the release agent system. It is not that greasy things must be bad. In fact, the surface of some greasy release films is more evenly coated and the residual adhesion rate is better. However, some are purely due to poor adhesion, and silicone oil is easy to fall off. These can be determined by testing. 5. Static electricity problems, in addition to physical treatment methods, chemical treatments are generally permanent. Generally, photoelectric-level die-cutting plants have dust-free workshops and equipment for removing static electricity. The problem will not be very big. . For stricter requirements, you can choose antistatic coated release film. It is a company specializing in the production of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, supply of PET motor film, etc. With a wide variety of products, affordable prices, and environmental protection, we provide customers with excellent quality and service based on the service tenet of excellence in production, honesty and trustworthiness in distribution, and warm and thoughtful service, and the spirit of assisting partners to achieve their own careers. Interested parties welcome to inquire!

Today’s world has entered the information age. Electromagnetic waves of various frequencies and wavelengths fill the entire earth’s space. These electromagnetic waves will cause varying degrees of interference to unshielded sensitive electronic components, circuit boards, and communication equipment, causing data distortion, Communication disorder. The static electricity generated by electromagnetic induction and friction will have a destructive effect on various sensitive components, instruments, and certain chemical products, such as high-voltage discharge due to the accumulation of static electricity in the packaging film. Therefore, the development of anti-static PET packaging film is also very important. important. The antistatic film is characterized by adding a certain antistatic agent to the PET film to form a very thin conductive layer on the surface of the film and form a continuous phase to improve the surface conductivity and make the generated charges leak as soon as possible. Generally, the surface specific resistance of the antistatic film is required to be less than or equal to 10 to the 9th to 11th power ohms. It is a company specializing in the production of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, supply of PET motor film, etc. With a wide range of products, affordable prices, and environmental protection, we provide customers with excellent quality and service based on the service tenet of excellence in production, honesty and trustworthiness in distribution, warm and thoughtful service, and the spirit of assisting partners to achieve their own careers. Interested parties welcome to inquire!

Water-soluble films are an essential component in various industries, from pharmaceuticals to agriculture. These films offer a convenient and environmentally friendly way to deliver active ingredients or protect products from moisture or damage. However, not all water-soluble films are created equal. High-quality water-soluble films have specific technical specifications that set them apart from low-quality options. In this article, we will explore what makes a high-quality water-soluble film and why these specifications are crucial for various applications.

Material Composition

One of the primary factors that determine the quality of a water-soluble film is the material composition. High-quality water-soluble films are typically made from premium-grade polymers that ensure excellent solubility and tensile strength. These polymers are carefully selected to provide the desired properties, such as transparency, heat resistance, and compatibility with various active ingredients. Additionally, the ratios of different polymers in the film formulation play a crucial role in determining its performance characteristics.

The material composition of a water-soluble film also influences its biodegradability and environmental impact. High-quality films are often made from biodegradable polymers that break down into harmless byproducts, reducing the amount of plastic waste generated. Furthermore, these films are manufactured using eco-friendly processes that minimize resource consumption and emissions. Overall, the material composition of a water-soluble film is a key aspect of its quality and performance.

Solubility and Dissolution Rate

Another essential technical specification of a high-quality water-soluble film is its solubility and dissolution rate. These properties determine how quickly the film dissolves in water, releasing any active ingredients it may contain. High-quality films are designed to dissolve rapidly and uniformly, ensuring efficient delivery of the active ingredients to the target substrate. This rapid dissolution rate is crucial for applications where precise dosing and consistent performance are required.

The solubility of a water-soluble film is influenced by various factors, including the polymer composition, thickness, and processing conditions. High-quality films are engineered to have a balanced solubility profile that meets the specific requirements of the application. Additionally, these films are tested to ensure that they dissolve completely without leaving any residue or film fragments behind. This thorough dissolution is necessary to prevent contamination and ensure the efficacy of the active ingredients.

Mechanical Properties

The mechanical properties of a water-soluble film are critical for its handling, processing, and performance in various applications. High-quality films exhibit excellent tensile strength, tear resistance, and flexibility, allowing them to withstand the stresses and strains encountered during manufacturing, transportation, and use. These films can be easily handled, cut, and sealed without risk of tearing or puncturing, ensuring consistent performance and reliability.

In addition to mechanical strength, high-quality water-soluble films also demonstrate good heat sealability and barrier properties. These properties are essential for applications where the film needs to be heat-sealed onto a substrate or protect sensitive products from moisture, oxygen, or other contaminants. By maintaining a tight seal and effective barrier, these films ensure the integrity and stability of the enclosed contents, prolonging their shelf life and efficacy.

Compatibility with Active Ingredients

The compatibility of a water-soluble film with active ingredients is another critical consideration for its quality and performance. High-quality films are formulated to be compatible with a wide range of active ingredients, including pharmaceuticals, agrochemicals, and personal care products. These films do not interact with the active ingredients or degrade their potency, ensuring that the desired effects are achieved upon dissolution.

Furthermore, high-quality water-soluble films are designed to release the active ingredients at the desired rate and in the required form. This controlled release is essential for applications where precise dosing and targeted delivery are necessary, such as in pharmaceutical tablets or agricultural pesticides. By ensuring compatibility and controlled release, these films maximize the effectiveness and efficiency of the active ingredients, improving the overall performance of the product.

Manufacturing Process

The manufacturing process of a water-soluble film is a crucial factor that influences its quality, consistency, and performance. High-quality films are produced using state-of-the-art equipment and advanced techniques that ensure precise control over the film properties and characteristics. The raw materials are carefully selected and processed to meet the specific requirements of the film formulation, resulting in a high-quality product with consistent performance.

In addition to the manufacturing process itself, high-quality water-soluble films undergo rigorous testing and quality control procedures to verify their performance and stability. These films are subjected to various analytical tests, such as solubility, mechanical strength, and compatibility assessments, to ensure that they meet the specified requirements. Furthermore, the manufacturing facilities are certified to comply with international quality standards and regulations, guaranteeing the safety and efficacy of the films produced.

In conclusion, high-quality water-soluble films exhibit specific technical specifications that set them apart from low-quality options. These films are characterized by their material composition, solubility and dissolution rate, mechanical properties, compatibility with active ingredients, and manufacturing process. By meeting these stringent specifications, high-quality water-soluble films ensure reliable and consistent performance in various applications, from pharmaceuticals to agriculture. Whether you are looking for a reliable packaging solution or an effective delivery system for active ingredients, choosing a high-quality water-soluble film is the key to success.

In summary, a high-quality water-soluble film is defined by its material composition, solubility and dissolution rate, mechanical properties, compatibility with active ingredients, and manufacturing process. These technical specifications ensure the efficacy, reliability, and environmental sustainability of the film, making it a preferred choice for various applications. By understanding and evaluating these specifications, you can select the right water-soluble film for your specific needs and requirements. Consider the factors discussed in this article when choosing a water-soluble film for your next project, and enjoy the benefits of a high-quality and reliable solution.