TH35997A - Uses of film adapted to suit the atmosphere in perishable food packaging. - Google Patents

Abstract

DC60 (10/03/42) Topics of invention on film structures suitable for packaging. Of at least 1 rotten food at the film layer consisting of a blend of at least 1 identical or mostly linear ethylene polymer and at least 1 poly Polypropylene polymer When the structure of the film was studied, it was characterized as having 2 percent of the secanh mocucus. Which is at least 8 percent more than the structure of the film Comparable, it was prepared without polypropylene polymer. At least 700 cc of oxygen (at standard pressure and temperature) - mil / 100 Cubic inch-day-atmosphere (0.027 cc- (at standard pressure and temperature) - cm / cm2-day-mpa-day) at 25 ° C. The invention film structure shows the equilibrium being done. To suit the features Production for these uses. Especially In the right packaging Adapted to the atmosphere for perishable products A film of a particular invention This is particularly well suited for the packaging of fresh fruits, vegetables and other perishable items, benefiting from a regulated determination of the environmental oxygen. The subject matter of film structures suitable for packaging of at least 1 perishable food at a film layer consisting of a blend of at least 1 linear ethylene polymer. The same or mostly linear, and at least 1 at the polypropylene polymer, when the film structure was studied, it was characterized as having 2 percent zecanh mocucus. Which is at least 8 percent more than any comparable film structure. Which was prepared without polypropylene polymer, the oxygen diffusion rate of at least 700 cc (at the pressure and Standard temperature) - mil / 100 Cubic inch - day - atmosphere (0.027 cc - (at standard pressure and temperature) - cm / square Centimeter-day-mpa) at 25 ° C. The invention's film structure exhibits an optimized balance of production properties for these uses. Especially in packaging that has been modified to suit the atmosphere. For perishable products A film of a particular invention They are especially well suited for the packaging of fresh fruits, vegetables and other perishable items, which benefit from Controlled determination of environmental oxygen

Claims (1)

1. The perforated film structure is suitable for perishable food packaging, consisting of at least one layer of film consisting of a blend of 70 to 95 percent with a minimum weight of (a). One of ethylene The same or most linear polymers It was characterized as having: (1) density of 0.89 to 0.90 g / cm3 (ii) molecular weight distribution Mw / Mn ... 3 (iii) single melting peak was measured by DIV. French scanning tags: