Bag having controlled oxygen-permeability

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 5/24 (2006.01) B32B 27/36 (2006.01) B65D 30/02 (2006.01) B65D 33/01 (2006.01) B65D 65/40 (2006.01) B65D 81/26 (2006.01) D04H 1/42 (2006.01)

Patent

CA 2624835

[PROBLEMS] To provide a bag which is excellent in flexibility, wear resistance, heat resistance and heat-sealing property and has a controlled oxygen-permeability. [MEANS FOR SOLVING PROBLEMS] Disclosed is a bag having a controlled oxygen-permeability, which comprises a non-woven fabric and a porous film assembled integrally, wherein the non-woven fabric is made of a polyester fiber comprising polybutylene terephthalate, polypropylene terephthalate or polylactic acid as the main ingredient, the porous film has a Frazier-type air permeability of 0.05 to 2 cc/cm2~sec and the edge part is heat-sealed.

La présente invention a pour objet un sac dont les caractéristiques de flexibilité, de résistance à l'usure, de résistance à la chaleur et de thermoscellage sont excellentes, et dont la perméabilité vis-à-vis de l'oxygène est contrôlée. La présente invention décrit un sac dont la perméabilité vis-à-vis de l'oxygène est contrôlée, et qui comprend un tissu non-tissé et un film poreux intégralement assemblés, le tissu non-tissé étant fabriqué à l'aide d'une fibre polyester comprenant du polybutylène téréphtalate, du polypropylène téréphtalate ou de l'acide polylactique au titre d'ingrédient principal, le film poreux ayant une perméabilité vis-à-vis de l'air de type Frazier comprise entre 0,05 et 2 cc/cm2.sec et l'extrémité du sac étant thermoscellée.

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