A process for low temperature heat sealing of polyethylene

Details A process for low temperature heat sealing of polyethylene A process for low temperature heat sealing of polyethylene

B - Operations, Transporting

29

C

B29C 65/18 (2006.01) B29C 65/00 (2006.01) B32B 27/32 (2006.01) C08J 5/12 (2006.01)

Patent

CA 2180809

A process of producing a heat sealed extrusion coated polyethylene article is disclosed. This process entails heat sealing, at a temperature below 95°C, two opposing extrusion coated polyethylene laminate surf aces thereby welding the surfaces to effect a heat seal. The polyethylene has a narrow molecular weight distribution, a low melt index, a low swell ratio, and a polydispersity index below 5.

Divulgation d'un procédé de production d'un article en polyéthylène recouvert par extrusion et thermo-scellé. Ce procédé nécessite le scellage thermique, à une température inférieure à 95 .degré.C, de deux surfaces en polyéthylène, stratifiées, opposées et recouvertes par extrusion, soudant ainsi ces surfaces de manière à produire un thermo-scellage. Le polyéthylène a une étroite distribution de poids moléculaire, un faible indice de fluage, un faible coefficient de gonflement et un indice de polydispersité inférieur à 5.

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