Cold Formed OPA/Al/PVC Sandwiched Foil For Blister Packs
About Cold Formed Alu Alu Foil ：
Cold formed aluminum foil is at the heart of alu alu OPA/Al/PVC sandwich foils used for pharmaceutical blister pack applications because of their inherently superior advantages. Aluminum, even in micron thickness, is the best vapor and light barrier besides providing aesthetic shine for pharmaceutical blister packs.
| Name | Cold-Form Aluminum Foils | |
| Structure | NY25/AL45/PVC60 | NY30/AL60/PVC60 |
| GSM | 240g | 281g |
| Specification | Width< 1000mm; Thickness: 0.14-0.16 mm; ID of core: 76 mm OD of core: 240-280mm, also can be according to customer’s requirements | |
There are regulations on how moisture-, oxygen- and light-resistant blister packaging must be, but some products may require extra resistance. While many different materials can be used to make blister packs, they can be separated into two categories: cold-formable and thermoformable;
Cold-formable material is commonly pressed aluminum that is laminated with plastic. The aluminum is resistant to many outside forces and has high mechanical resistance; aluminum has a tendency to leech into other materials and to crack, but the plastic inclusion corrects these issues. Thermoformable materials are plastics that can be easily molded into any shape, but they are not as resistant to outside forces — especially light — because the plastic is transparent. If the product is a simple shape that needs high resistance, then cold-formable materials are likely best;
Cold Forming Blister Foil(Alu-Alu) is one kind of blister primary packaging material for solid pharmaceuticals, like tablet & capsule.
The foil produced in Dirante factory is three layers laminated: oPA / Alu / PVC, under using dry bond lamination technology.
Cold Forming Blister Foil Structure:
Cold Forming Blister Foil Features
100 % barrier against water vapor, gases, light etc.Excellent formabilityHigh degree of thermal stabilityHigh malleability for deep drawing blister cavitiesHigh aesthetic appealSealable with aluminum lidding foilColorful surface as RAL color-list
The PVC film in alu -alu laminate is commonly used as the contact layer and seal to the lidding foil on pharmaceutical blisterpack (as neutral layer for the goods to be filled).
PVC is very stiff and does not tend to shrink or spring during cold forming. Once the cold forming process is complete, the PVC helps the cavity hold its shape. In short, it ensures the geometric stability after cold forming.
The nylon (oPA) film is mostly responsible for the multi - axial forming. Laminating the aluminum with the oPA film doubles the formability of the blister.
Cold Forming Blister Foil Specification
| Name | Cold-Form Aluminum Foils | |
| Structure | oPA 25-30 mic/ Alu 45-75 mic/ PVC 60 mic | |
| Specification | Width: 60 - 1000 mm; Thickness: 130 - 200 mic; Core ID: 76 mm, paper reel; Roll OD: 260-300mm, also can be as your request | |
