Abstract: Tamper-proof closure seal for containers such as bottles, cans, and the like and methods of tamper-proofing and manufacturing tamper-proof closure seals which preclude inadvertent openings of product containers, readily indicate to prospective consumers that a product container has been opened or tampered with and which yet still enables easy intentional opening of such product containers.

Abstract: A cap type structure for closing a pour-out opening in the top of a packing container wherein the pour-out opening terminates in an outwardly turned flange portion which engages and interlocks with an inwardly turned flange portion on the cap which is made of plastic material and a sealing ring of thermo-plastic material is located between the inter-engaging flange portions. The cap is removed by means of a pull tab which is secured to the flange portion of the cap which causes the flange to be torn off.

Abstract: This disclosure relates to a bottle cap construction wherein a tear section is defined by score means in the bottle cap construction so that the tear section is initially integral with the remainder of the bottle cap throughout the entire juncture of the tear section with the remainder of the bottle cap. The tear section has at least one edge thereof extending from the top portion of the bottle cap to the free edge of the rim portion that is utilized to crimp the bottle cap to the open end of the bottle, a ring pull tab being secured to the tear section at the top portion of the bottle cap to facilitate the pulling of at least one edge of the tear section from the closure member to open the bottle.