It’s no secret that the flexible packaging market is growing and growing fast. Many consumers and packagers are turning to flexible packaging because of its light weight, convenient features, and endless customization options. Heat seal and Cold seal are both used in a variety of flexible packaging applications. They each have difference characteristics and work best for specific product needs. Do you know the difference between the two and which works best for your application? Read on to find out. Heat Seal Packaging Both surface printed inks and lamination inks can also be heat sealed. In this instance, a heat sealable film is used or a heat sealable coating is used to combine two films by applying heat to achieve the seal. Sealing temperatures and pressures can vary so when formulating these types of inks, it’s important to know and test the inks under these sealing conditions. A typical sealing specification maybe 350 degrees Fahrenheit for half a second at 40p.s.i. Heat sealing is used for joining thermoplastic films, typically less than0.5 mmthick. There are two main types of heat sealing: hot-bar welding and impulse welding.Hot-bar welding and impulse welding have found applications in a number of industrial sectors, but are most widely used in the packaging industry for sealing bags, films, and containers made from thermoplastics. This includes plastic pot and tray sealing for food packaging applications. Cold Seal Packaging Cold-seal packaging is a complex package. It often involves two films, one reverse-printed with the brand owner’s graphics, and a second that provides the barrier to protect the product inside. These two films are then laminated together to produce a single inseparable web. From there, the cold seal is applied on the inside surface of the web in a pattern registered/aligned with the graphics on the outside of the web. Many temperature-sensitive confectionary items (e.g. chocolate) are packaged and sealed using cold seal adhesives. These surface printed constructions consist of a surface printed ink and a cold seal release lacquer (CSRL), which prevents the printed ink from offsetting against the cold seal glue when in the printed roll. Inks for cold seal packaging should not be formulated with any kind of fatty amide or PFE waxes as these can “poison” the cold seal adhesive if left in contact with the adhesive for any length of time in the printed roll.

Ink is a huge part of our everyday lives. Without it we wouldn't be able to print money, make road signs, or mail packages. The different types of ink include: ·Pen ink ·Printer ink ·Erasable ink ·Phosphorescent ink ·Fluorescent ink ·Adhesive ink ·Invisible ink ·Edible ink Pen Ink Pen inks are oil or water-based and contain additives that dye the ink a certain color. For instance, black ink pens contain carbon black, while blue ink pens contain phthalocyanine blue. Printer Ink Most color printers follow the CMYK (cyan, magenta, yellow, black) model. To make new colors and create an image, the printers will layer tiny dots of the four printer colors. Erasable Ink The erasable pen was invented in 1979, but took 10 years to perfect. The ink inside is made of a liquid rubber cement, which makes it possible to remove the pen marks via a combination of friction and heat. Phosphorescent Ink Phosphorescent ink is made using strontium aluminate and phosphors. These chemicals absorb and store light energy until the light disappears. Once it's dark, the energy is converted into visible light known as the glow. Fluorescent Ink Fluorescein is a chemical used to make highlighter ink. It's what gives the highlighters their neon color when the ink is applied to the paper. Different additives are used depending on which color highlighter you're using. For instance, a chemical known as pyranine is used to make yellow highlighters. Adhesive Ink Temporary tattoos and decals are made from regular ink with a special coating that's printed onto transfer film. When moisture is applied, it soaks through the film and transfers the image onto the surface. Invisible Ink Write a secret message and then uncover it using heat or light. Many items in your kitchen can be used to create invisible ink including: lemon juice, milk, clear soda, and vinegar. This ink is also often used by concert venues or theme parks as stamps for admission. Edible Ink Edible inks are made from water, sugar, and FDA-approved colorants. They're safe to eat and often are used to print photos or logos on cakes, cookies, and candy.

Vinyl resin has relatively stable chemical properties, and has excellent insulation and corrosion resistance. We would like to share some applications to you as follows: 1. GRP pipes and storage tanks All kinds of glass fiber reinforced plastic products such as cans, pipes and containers with anti-corrosion requirements. 2. Flue gas desulfurization All coal-fired thermal power plants have FRP chimneys for flue gas desulfurization, which are typical applications of vinyl resin. 3. Iron and Steel Industry Vinyl resin is used for maintenance coatings. It is used in the pickling section area, waste acid tank and area of stainless steel cold rolling and hot rolling production line, FRP grid, cover plate, dilute acid tank, waste water tank, etc. Office. 4. Chemical industry Used in lining of titanium dioxide plant, fertilizer plant, phosphate plant and other equipment, acid-resistant bricks and ground granite joints. 5. Petrochemical industry, papermaking, printing and dyeing industry Vinyl resin is used for storage tank lining FRP, wastewater tank lining, pipeline coating anticorrosion, wall surface, steel structure anticorrosion, etc. 6. Overall Mortar Floor One is the overall anti-corrosion floor that is resistant to acid, alkali and salt; the other is the anti-static, dust-proof, food-grade clean floor. 7. Chemical fiber and textile industry Vinyl resin is used in equipment linings, wastewater ponds, pipeline coatings, etc. 8. Solvent resistance and flame retardant Vinyl resin is suitable for the requirements of solvent resistance in most occasions, and is suitable for flame retardant requirements of buildings below B1. 9. Wind power blades Vinyl resin can replace epoxy resin because of its good toughness and fatigue resistance. 10. Electrolytic cell (pool), electroplating In the non-ferrous metal smelters, the most commonly used electrolytic copper, electrolytic nickel pools and tanks are often made of vinyl resin to make resin concrete integrated electrolytic tanks, or as the first choice for glass fiber reinforced plastic lined resin, and are used in workshop floor, FRP grille, cover Board and other places. Vinyl resin is often used in the plating tank lining and floor of the plating workshop.

Dear All Partners and Customers, Lunar New Year is on the way and it has been an amazing year working with you. In the Year of the Tiger, Sunman would like to wish all our valued patrons and partners – with a Tiger's ferocity and grit – to achieve their vaulting ambitions and soar to new heights. Please be informed that our office will be closed from 29th Jan.2022 to 6th Feb.2022 for Lunar New Year holiday. Our business operation will back to normal on Monday 7th Feb.2022 Happy New Year 2022! Best regards, Sino Sunman