A seal is a thin film of aluminium, plastic or compound materials positioned on the opening of containers such as vials, bottles, jars, pill bottles or jugs in order to (depending on the type of seal):
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provide a hermetic, watertight seal
provide a guarantee that the container has not been tampered with and has never been opened.
protect the product against light, oxygen, moisture, germs and odours
Cap seals are mainly used by the food, cosmetics and pharmaceutical industries. But they are also used on veterinary products, agrochemicals, automotive lubricants and household products.
Points to watch for:
=> The recommended torque must be strictly respected.
=> To ensure a good seal, drying time of at least 48 hours is required. If you need to open the cap (for instance to insert a leaflet or an accessory between the seal and the cap), you need to wait at least 48 hours.
The seals can be flat or pre-formed (stamped) and are customizable.
Heat sealing is the process involved in heat sealing a seal to a compatible container. (There are two methods: conduction sealing / induction sealing).
Before choosing my seal, I have to answer the following questions:
The answers will help you determine the type of seal you can use. Some examples:
=> The pressure sensitive seals can be used for:
=> The heat seals can be used for:
=> If the seal comes into contact with foodstuffs you must check the compatibility between the seal materials and the type of food by referring to the technical and regulatory information.
=> For packaging hot products, I should use a heat seal.
=> If my product should be refrigerated, I should use a heat seal.
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=> Only heat seals can be customized.
These products are less sensitive but some storage rules must be followed:
The information in this article refers only to the types of packagings distributed by Fidel Fillaud
For a new customer, this question is the most important you would want to ask yourself when purchasing a new cap with a liner. There are many factors to take into question when choosing a Liner for your specific product. Below are some of the main products that are used with the specified liner. Please note that these are general recommendations and not mandatory to use with your product.
If you have questions, please contact us by , , or live chat and one of our customer care specialists will be glad to help with any inquire you might have. We also always recommend choosing a sample first before making a big purchase.
Our black plastic screw top cap features a heat-sealed aluminum liner to ensure customers that their product has not been tampered with. When installed properly, the cap&#;s heat induction seal forms an airtight inner seal that protects contents against oxygen and moisture and provides a tamper-evident-proof safety. The liner is an aluminum foil-coated liner that has paper on one side and foam on the other. It features a heat sealable coating that is laminated to polystyrene foam. These types of heat induction seals can be used with Polyethylene, PET, PP, and PVC.
In addition, our black plastic screw top cap is great for a variety of uses for cosmetics and personal care products and is easy to use. The heat seal liner preserves the product for a longer period of time by trapping in oxygen to increase the longevity of products such as lotion, soaps, sanitizers, and more.
*Heat Induction Seals (HIS) are not suitable for products containing oil
This black plastic screw top cap includes a PS liner inside the cap. In other words, A pressure-sensitive liner is a variety of polystyrene liners. For instance, it is commonly referred to as poly liners. An ideal general-purpose liner material, the compressible Pressure Sensitive foam creates a stable seal. In addition, Pressure-sensitive liners are odor resistant and pulp dust-free. Pressure-sensitive liners are recommended to be used with powders or dry products. Pressure-sensitive liners are not recommended for use with liquid.
Pressure Sensitive liner has an adhesive coated on foam seal and a release coating on the back that does not come in contact with the product. It adheres to either glass, metal, or plastic containers when applied and sticks to the container when the cap is removed. Once the cap is applied, it should not be removed for at least 24 hours to ensure proper adhesion. Pressure-sensitive liners have a recommended shelf life of 6-months.
This lid includes a PE foam liner inside the cap. In other words, A PE liner is a variety of polyethylene foam liners. For instance, it is commonly referred to as poly liners. It is a flexible plastic liner specifically designed to line the inside of a glass, metal, or plastic container. An ideal general-purpose liner material, the compressible PE foam creates a stable seal. In addition, PE liners are odor-resistant and pulp dust-free. They also have good chemical resistance to acids, alkalis, solvents, alcohols, oils, household cosmetics, and aqueous products. PE liners are not recommended for use with hydrocarbon solvents.
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