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What is induction cap sealing & How does it work? Why Induction Seal? Why waterless? How fast can you seal? Can you seal to glass? Can you overseal? Why Honor Pack? What is induction cap sealing & How does it work? The closure is supplied to the bottler with foil liner already inserted. Although there are various liners to choose from, a typical induction liner is multi-layered. The top layer is a paper pulp that is generally spot-glued to the cap. The next layer is wax that is used to bond the foil to the pulp. The bottom layer is a polymer film laminated to the foil. After the cap or closure is applied, the container passes under an induction coil, which emits a varying electromagnetic field. As the container passes under the induction coil (sealing head) the conductive aluminum foil liner begins to heat. The heat melts the wax, which absorbs into the pulp backing and releases the foil from the cap. The polymer film also heats and flows onto the lip of the container. When cooled, the polymer creates a bond with the container resulting in a hermetically sealed product. Neither the container nor its contents are affected, and this all happens in a matter of seconds. Back to top Why induction seal? 1. Tamper Evidence 2. Leak Prevention 3. Retain Freshness - Increased Shelf Life 4. Pilferage protection
Tamper evidence With the FDA regulations concerning tamper-resistant packaging, pharmaceutical packagers must find ways to comply as outlined in Sec. 450.500 Tamper-Resistant Packaging Requirements for Certain over-the-counter (OTC) Human Drug Products (CPG 7132a.17).
Induction sealing systems meet or exceed these government regulations. As stated in section 6 of Packaging Systems: “…6. CONTAINER MOUTH INNER SEALS. Paper, thermal plastic, plastic film, foil, or a combination thereof, is sealed to the mouth of a container (e.g., bottle) under the cap. The seal must be torn or broken to open the container and remove the product. The seal cannot be removed and reapplied without leaving visible evidence of entry. Seals applied by heat induction to plastic containers appear to offer a higher degree of tamper-resistance than those that depend on an adhesive to create the bond…” Leak prevention/protection Some shipping companies require liquid chemical products to be sealed prior to shipping to prevent hazardous chemicals from spilling on other shipments. Freshness Induction sealing keeps unwanted pollutants from seeping into food products, and may assist in extending shelf life of certain products. Pilferage protection Induction-sealed containers help prevent the product from being broken into by leaving a noticeable residue from the liner itself. Pharmaceutical companies purchase liners that will purposely leave liner film/foil residue on bottles. Food companies that use induction seals do not want the liner residue as it could potentially interfere with the product itself upon dispensing. They, in turn, put a notice on the product that it has been induction-sealed for their protection; letting the consumer know there was a liner on the plastic bottle prior to purchase.Back to top Why waterless? With the technology developing, induction sealers are able to realize full function in a small pc broad. Waterless systems are less than one-half the size of previous generation water-cooled systems as we’ve eliminated the filters, hoses, pumps, radiators, flow switches, water and mess. And, the new waterless designs are practically maintenance free, saving you time and money.Back to top How fast can you seal? Sealing speed is largely dependent on the diameter of the foil, the style of cap, the speed of your conveyor, the power supply size, and the induction coil. Honor Pack will match up the proper equipment for your application. Back to top Can you seal to glass? Yes, dry products are no problem. Liquid products in glass containers are generally not conducive to induction sealing. Stability tests are recommended whenever using glass containers. The materials of bottle for Honor Pack Induction Seal can be following: PET, PE,PP,PVC,Glass,ABS even Creamic and Baboo, WoodenBack to top Can you overseal? No. Overheating the foil causes damage to the seal layer and to any protective barriers. This could result in faulty seals, even weeks after the initial sealing process. Back to top Why Honor Pack? With our developing, now we covered most of the induction seal application range and various choice for the foils. Excellent quantity, competitive price and more than 3 years exporting experience, we will be your best choice. Back to top |