In extrusion blow molding a hollow tube or parison is formed by forcing material between a die and a mandrel. A mold cavity, composed of two halves, closes around the parison, sealing the bottom. Blow pins are inserted into the top of the tube, forming the neck. Compressed air expands the parison to conform against the cold mold cavity walls. When sufficiently cool, the mold opens and the container is removed and trimmed of excess plastic or flash. Flash, a basic characteristic of extrusion blow molding, is formed when the parison is pinched off by the mold. Since plastic resins can be reprocessed, the flash is not wasted but is used as regrind mixed back with virgin material. Wall distribution, thickness and weight can be controlled by parison programming. While the parison is extruded, programming changes in the relation of mandrel and die can be used to shift material from heavier, stronger areas to lighter, weaker areas. This method aids significantly in maximizing container performance and minimizing container weight and cost.
CKS Packaging offers a unique "Building Block" concept of mold design. A tool can start as a 1 cavity tool and additional cavities can be added over time as requirements grow to run as 2, 3, 4, 6 or 8 cavity molds.
CKS Packaging is available to meet all packaging needs from 100M to 10MM annual unit requirements. A wide range of molding equipment and technology make possible the custom designing and production of components to fit any range of budget and configuration.
Custom variations to stock bottle tooling include:
CKS Packaging tooling costs depend entirely upon the application and required production rate:
CKS Packaging has the know-how and experience to provide the type of custom tooling required to fit your packaging needs. Call on us for a consultation on any potential package. A capable representative will be glad to help you evaluate the molding options which may best fit your product.