One of the key benefits of roll-to-roll tapes is the ability to create a structure and process such as a laminate that exactly matches your specifications for impermeability, shelf life, protection, printing and aesthetics, as well as a feel that sets your product apart from the competition! Laminates are used in a variety of markets including pet food, frozen and deep-frozen foods, nutritional supplements, cosmetics, etc. NedriStone laminate pouches are customized to your specific product needs, providing long-term durability as well as resistance to harmful external factors. Our team can determine what type of protective layer is required and then use that to determine the required laminate materials. Our lamination technology includes two-layer and three-layer lamination equipment that uses solvent and non-solvent adhesives to improve product performance and enhance its aesthetics.
Coldsill and Heatsill
After completing the lamination process, the next step is to add cold glue, or Cold Seal.
Cold glue is a technology used in food and perishable products to seal the edges of packaging.
This series of laminate adhesives is considered the most widely used series of laminate adhesives.
The main applications of this category of adhesives include the following:
Transparent or metallized film/film laminates whose material types can include: BOPP, CPP, HDPE, LDPE, PET, PA, PVDC, EVA, EVOH, PVOH.
What is the use of lamination in the printing process?
Laminate is used to preserve printed works. In fact, laminating means using a thin layer on the front or back of the printed page that protects it from moisture and temperature changes. Laminate is actually in a liquid state, and different types of laminate liquids perform indirect printing on different surfaces. In terms of laminating methods and processes, there are basically specific divisions in the labor market. For example, glossy and matte or cold and hot. But in general, the concept of this method includes covering with plastic surfaces. Of course, plastic surfaces also have special characteristics here in terms of thickness (in microns) and dimensions (roll or sheet depending on the type of machine). Lamination is not printing, but after the work is printed, it is pressed or laminated, which is offered in different widths of its machines in the company. There are two types of laminate, including hot and cold lamination, where cold is thinner, almost more beautiful, more elegant and more expensive. But the most common lamination is hot lamination in matte or glossy form, which is usually used for large works, or large format or plotting. The most common lamination method is the hot method, in which a plastic coating is applied to the surface with heat. This work has been common since ancient times, and it was commonly called a press, and it was used for small-sized works. Today’s machines are mostly rolls, and in our country it can be found mostly in printing houses that have digital printing machines. Lamination is done with this method in two ways, matte and glossy, and the back and front of the work can be laminated in both ways. The cold method is more for protecting the surface of the printed work and creating artistic effects. The difference between this method and the hot method is the absence of heat and the use of a very thin layer in this system, and it can be said that it is equivalent to cellophane stretching. Of course, this work is also possible by spraying special polymer liquid materials, which are called coating. Basically, after plotting the printed work, it is laminated. Lamination improves the intensity of colors and color contrast in printed images. Printed images with brilliant colors indicate higher quality. Lamination prevents wrinkles, stains, sun damage, darkening, fading of color or grease, fingerprints and other environmental damage to the printed work. Overall, one of the main advantages of lamination is that it significantly increases the durability of the coating and protects it. If increasing longevity is your main goal, lamination is a good choice. Lamination ratio This ratio indicates the amount of film to the amount of adhesive. For example, when someone talks about a 3/4 ratio, they are actually talking about a 7 mil thick film that consists of 4 mils of film and 3 mils of adhesive. (The specific meaning of mil here is 1/1 inch and should not be confused with millimeters or thousandths of a meter.) The thickness of a laminate film is commonly referred to as mil (one thousandth of an inch). Polyester The base or outer protective layer of thermal lamination films that does not melt during the thermal lamination process, and is also the base of many PSA films. Polyethylene The adhesive used in most thermal films that melts during the thermal lamination process. The lamination process begins at the nip (where the two pressure cylinders meet).) The laminator’s cooling fans or cylinders then cool the adhesive until it becomes a solid, flexible material again. Calendaring Vinyl – (Lower Price) Calendered film is produced using the calendaring process. Simply put, a significant volume of molten vinyl (paste) is passed through a pair of hot calendering rollers until it is compressed to a thickness of 3.2 or 4 mils; the film is then supplied in rolls for use as an adhesive coating. Calendering is an effective and cost-effective method of producing film that has also significantly reduced the cost of vinyl. Cast Vinyl – (Easier Method) Cast film is produced by pouring liquid vinyl into soft sheet molds. As the material passes through the oven, the solvent evaporates to form a solid film. When the film comes out of the oven, it is ready to receive an adhesive layer. Cast films for outdoor use have a lifespan of about four to seven years, and the image protected by these films fades more slowly than glossy films because the cast film structure has better pigments and UV stabilizers. In addition, cast film is more stable, is a more convenient method, and is also wrinkle and expansion resistant. Saran Wrap: Better known by the trade name Cling Film, a very thin flexible plastic sheet used for packaging (like cellophane) – Saran is the thermoplastic resin that is the main ingredient in this product.
What are the types of laminate?
After the work is printed, it is pressed or laminated, which is offered in different widths of its machines in the company. There are two types of lamination, including hot and cold lamination, where cold lamination is thinner, almost more beautiful, more elegant and more expensive. However, the most common lamination is hot lamination in matte or glossy form, which is usually used for large works or large format or plots. The most common method of lamination is the hot method, in which a plastic coating is drawn onto the surface with heat. This work has been common since ancient times, which was commonly called pressing and was for small-sized works. Today’s machines are, of course, mostly rolls, and in our country it can be found mostly in printing houses that have digital printing machines. Lamination is done with this method in two ways, matte and glossy, and the back and front of the work can be laminated in both ways. The cold method is more for protecting the surface of the printed work and creating artistic effects. The difference between this method and the hot method is that there is no heat and a very thin layer is used in this system, and it can be said that it is equivalent to cellophane coating. Of course, this can also be done by spraying special liquid polymer materials, which are called coatings. Basically, after plotting, the printed work is laminated. Lamination improves the intensity of colors and color contrast in printed images. Images printed with bright colors indicate higher quality. Lamination prevents wrinkles, stains, sun damage, blackening, fading of color or grease, fingerprints and other environmental damage to the printed work. Overall, one of the main advantages of lamination is that it significantly increases the durability of the coating and protects it. If increasing the lifespan is your main goal, lamination is a good choice.
What is the ratio of laminate and its application in products?
Laminate Ratio This ratio refers to the amount of film to the amount of adhesive. For example, when someone talks about a 3/4 ratio, they are actually talking about a 7 mil film that is made up of 4 mils of film and 3 mils of adhesive. (Here, mil is specifically 1/1 inch and should not be confused with millimeters or thousandths of a meter.) The thickness of the laminate film is commonly referred to as the mil thickness (one thousandth of an inch). Polyester The base or outer protective layer of thermal lamination films that does not melt during the thermal lamination process, and is also the base of many PSA films. Polyethylene The adhesive used in most thermal films that melts during the thermal lamination process. The laminating process begins at the nip (where the two pressure cylinders meet). The laminator’s cooling fans or cylinders then cool the adhesive until it becomes a solid, flexible material again. Calendaring Vinyl (Lower Price) Calendered film is produced using the calendaring process. Simply put, a significant amount of melted vinyl (paste) is passed through a pair of heated calendering rollers until it is compressed to a thickness of 2.3, 3.5, or 4 mils; the film is then supplied in rolls for use as an adhesive coating. Calendering is an efficient and cost-effective way to produce film, and it has also significantly reduced the cost of vinyl. Cast Vinyl (Easier Method) Cast film is made by pouring liquid vinyl into soft sheet molds. As the material passes through an oven, the solvent in it evaporates to form the remaining solid material, forming the film. When the film comes out of the oven, it is ready to receive an adhesive layer. Cast films for outdoor use have a lifespan of about four to seven years, and the image protected by these films fades more slowly than glossy films because the structure of cast films has better pigments and UV stabilizers. In addition, cast film is more stable, is an easier method, and is also wrinkle and expansion resistant. Saran Wrap: Better known by the brand name Cling Film, a very thin layer of flexible plastic used for packaging (like cellophane) – Saran is the thermoplastic resin that is the main ingredient in this product.
