초록 ▼

A storage bag made of a composite film material of two or more plys of plastic film for use in vacuum packaging fresh perishables, such as fresh cuts of meat. The film composite has a matted finish on the inside surface of its inner layer which causes the film to have a translucent appearance. The a

A storage bag made of a composite film material of two or more plys of plastic film for use in vacuum packaging fresh perishables, such as fresh cuts of meat. The film composite has a matted finish on the inside surface of its inner layer which causes the film to have a translucent appearance. The areas of the bag which are sealed together during the packaging process become transparent to provide a visual inspection for a proper seal.

대표청구항 ▼

A composite film comprising: a. a first outer layer of transparent nylon film having a thickness between 0.75 mils. and 2 mils., a puncture resistance value of between 750 to 800 lb./in.2, a tear resistance value between 0.75 to 0.85 lbs. and an oxygen transmission rate of less than 1cc/400 in.2/24

A composite film comprising: a. a first outer layer of transparent nylon film having a thickness between 0.75 mils. and 2 mils., a puncture resistance value of between 750 to 800 lb./in.2, a tear resistance value between 0.75 to 0.85 lbs. and an oxygen transmission rate of less than 1cc/400 in.2/24 hours; b. an intermediate layer of transparent low density polyethylene having a thickness between 0.5 mils. and 1.5 mils.; c. said nylon layer and said polyethylene layer bonded to each other by an adhesion promoter to provide a bond strength in the range of 450 to 500 grams per inch of width, said adhesive promoter being a primer coating applied to said nylon film prior to bonding said nylon film to said polyethylene, and, d. a second outer layer of heat sealable, ionomer film, bonded to said polyethylene layer, which is an ethylene-acrylic acid copolymer partially neutralized with sodium or zinc, said ionomer film having an external matte finished surface which is translucent, formed by contacting said ionomer film with a chill roll, said ionomer film having a heat sealing temperature of 200°-230°F. and a seal strength between 10 to 14 lbs./in. of width.