Patent ID: 8800798
Filing Date: 2014-08-12
Classification: B29C,B29K,B29L,B65D

Abstract:
1. A packaging comprising a container and a lid, each of said container and lid being made of a crystalline plastics material which is suitable for injection moulding, said lid being sealable to the container via welding or joining by supplying heat, wherein the lid comprises an elevated area for abutment on an upper edge of the container, wherein at least a portion of the lid is made with a sealing zone for joining with the container, wherein at least a portion of the container is made with a sealing zone for joining with the lid, said crystalline plastic material of at least one of said lid and said container containing an active material which ensures that a seal formed between the sealing zones of the container and the lid via welding or joining by supplying heat is weaker than surrounding material, such that when the seal is broken, the breaking point will be in the seal and not in the surrounding material, the active material being added to moulding material of the sealing zone of at least one of said lid and said container prior to injection moulding and wherein said active material included in said sealing zone of at least one of said lid and said container is deposited in peripheral areas of crystalline grains formed in the moulding material during/following injection moulding.