MIRON Violetglass stocks a selection of lids to go with the cosmetic and wideneck jar families. For the jars to be hermetically sealed, each lid includes a violet colored sealing element. This element is made from PHAN, a three-layer laminated product constituted of two layers of solid PET films on the outside and a layer of foamed EPE on the inside. It is the foamed center core that provides the resiliency needed for airtight sealing. MIRON Violetglass offers two styles of black lids: the modern lid with its straight lines and sharp edges or the classic lid with round lines. To store products to be kept out of the reach of children such as medical or cannabis related products, we also propose custom designed child resistant lids.
Let’s talk about threads
...But what exactly are threads?
Simply put, threads are the protruding lines curved around the neck of the bottle. They ensure that the matching closure will have a tight fit to protect your natural ingredients from being tampered with or from leakage. The threads size depends on the size of the bottle neck as well as our range of closures. Our bottles and jars as well as the corresponding closures must have matching threads. If in doubt, it is always advisable to contact the sales department.
GPI and GCMI
GPI and GCMI are the US norm of neck finishes and are followed by two numbers written like this: 22/400*. The first number indicates the neck finish diameter and is measured across the outside of the bottle’s threads. The second number refers to the height and thread style. Meaning, the number of threads turns around the neck. Simply match the GPI or GCMI code listed in the product description with the corresponding jar(s) to purchase the related items.
* Please note that if a bottle has an additional ring in the neck, this may affect the choice of matching closure. For more details, please get in touch with your representative.
A special thread differs from the standard threads in the market. This is because some MIRON products are tailored to unique (market) demands that differ from standard packaging shapes/sizes. The lids that fit these special threaded jars are designed to create the perfect fit. To do this, simply match the Modern or Classic lid size (given in mm) to the corresponding threaded jars. To simplify this process, we have added the appropriate combinations for you on the product page. When you click on your favorite item and get to the product description page, you can scroll down to find the matching products. For example, the Modern 32 mm will correspond to the Ceres 5 ml, 32 special threads.
PP, SAN, and UREA
PP is also known as polypropylene and falls under the plastic identification code number 5. The material is easily produced and has a high degree of purity. It comes with a range of benefits, so is it difficult to break, lightweight, easily and 100% recyclable. Due to its properties, PP is suitable for various applications, including food, cosmetic, and natural healing product packaging. SAN (styrene-acrylonitrile) is a heat-resistant thermoplastic. It is one of the safe plastics covered by recycling code 7. Parts made of SAN have a remarkable shine and are very durable. It is because of these properties that SAN resins are frequently used for premium-quality packaging. In addition, it is reusable and food safe and is mainly used for dry products. Urea formaldehyde moldering material (UF) is also known as amino plastic. This type of material has become a common component of closure applications. The UF resins are noted for their high strength and rigidity.
Smooth refers to the tangible elements of the closure, having an even surface that is free from perceptible patterns, ribbing, or indentations.
The violet sealing element in the lid is made of PHAN, a three-layer laminated product consisting of two layers of solid PET film on the outside and a layer of foamed EPE on the inside. It is the foamed core in the center that provides the resilience needed for an airtight seal.
At MIRON Violetglass we ensure that our closures always fit the corresponding bottles and jars. However, it can sometimes be a bit of a challenge to find the right closure which complements the needs of your natural ingredients. We are always happy to answer any questions you may have and to become a part of your products journey.
For more information about threads, visit our Neck Finishes Explained guide.