Film and packaging for gas or vapor decontaminable packaging and methods decontaminating packages
Disclosed are films and a packaging for gas or vapor decontaminable packaging applications and a method for creating a sterile packaging using the same. These films are particularly useful for sterile storage and transport of objects for medical, pharmaceutical or cosmetic uses, in particular of sterile pharmaceutical primary packaging means, like vials, ampules, syringes, or cartridges. Said film comprises at least a layer of a selectively permeable non-woven, a layer of a punctured film, and an adhesive which can be activated by energy transmission. Optionally it comprises further film layers. The method for creating a sterile packaging comprises the step of hermetically closing the packaging by activating the adhesive thereby making the non-woven impermeable.
1. A film for gas or vapor decontaminable packaging applications, comprising in sequence from outside to inside of the film:
a first layer of film being essentially impermeable for the decontaminating gas or vapor, having a first needling, perforation and/or cut pattern;
an adhesive layer which can be activated by energy transmission, covering an entire surface of the first layer; and
a layer of selectively permeable non-woven material being essentially impermeable for microorganisms, wherein the adhesive layer is between the first layer and the layer of selectively permeable non-woven material.
2. The film according to claim 1 , further comprising a second layer of film being essentially impermeable for the decontaminating gas or vapor, having a second needling, perforation and/or cut pattern being incongruent with the first needling, perforation and/or cut pattern, and being arranged between the adhesive layer and the layer of selectively permeable non-woven material.
3. The film according to claim 2 , wherein the first and second layers of film form a laminated structure or are joined to each other only at parts of their surface.
4. The film according to claim 2 , wherein the first and second layers of film form a laminated structure or are joined to each other only at peripheral surface areas.
5. The film according to claim 1 , wherein activation of the adhesive layer by energy transmission can be effected through one or more processes selected from a group consisting of heat, UV irradiation, IR irradiation, induction, and microwave irradiation.
6. The film according to claim 1 , wherein the adhesive layer is a hot melt heat sealable adhesive system containing additives that are responsive to the energy transmission.
7. The film according to claim 1 , wherein the selectively permeable non-woven material is a flash spun plexifilamentary film-fibril structure or a spunbonded very fine filaments non-woven.
8. The film according to claim 1 , wherein the selectively permeable non-woven material is made of a material selected from a group consisting of high density polyethylene (HDPE), polypropylene (PP), and polyethylene terephthalate (PET).
9. The film according to claim 1 , wherein the first and/or second layers of film comprise a material selected from a group consisting of polyethylene, polypropylene, polyamide 6, polyethylene terephthalate, and blends and/or copolymers thereof.
10. The film according to claim 1 , wherein the first and/or second needling, perforation and/or cut pattern is selected from a group consisting of a labyrinth-like pattern, a comb-like pattern, and a stripe pattern.
11. A film for gas or vapor decontaminable packaging applications, comprising:
a first layer of film that is essentially impermeable for gas or vapor, the first layer of film having a first plurality of apertures defined therethrough;
a layer of selectively permeable non-woven material being essentially impermeable for microorganisms; and
an adhesive layer between the first layer of film and the layer of selectively permeable non-woven material, the adhesive layer having a non-activated state and an activated state, the adhesive layer, when in the non-activated state, being permeable to the gas or vapor, and the adhesive layer, when in the activated state, being impermeable to the gas or vapor, the adhesive layer being activated from the non-activated state to the activated state by energy transmission,
wherein the adhesive layer is arranged and configured so that when in the activated state the first plurality of apertures are sealed.
12. The film according to claim 11 , further comprising a second layer of film being essentially impermeable for gas or vapor, the second layer of film having a second plurality of apertures defined therethrough, the second layer of film being between the adhesive layer and the layer of selectively permeable non-woven material.
13. The film according to claim 11 , wherein the second plurality of apertures are incongruent with the first plurality of apertures.
14. The film according to claim 12 , wherein the adhesive layer is arranged and configured so that, when in the activated state, the second plurality of apertures are sealed.
15. A film for gas or vapor decontaminable packaging applications, comprising in sequence from outside to inside of the film:
a first layer of film being essentially impermeable for the decontaminating gas or vapor, having a first needling, perforation and/or cut pattern;
an adhesive layer which can be activated by energy transmission, covering the entire surface of a layer underneath;
a layer of selectively permeable non-woven material being essentially impermeable for microorganisms; and
a second layer of film being essentially impermeable for the decontaminating gas or vapor and arranged between the adhesive layer and the layer of selectively permeable non-woven material, wherein the first and second layers of film are joined to each other only at peripheral surface areas.
16. The film according to claim 15 , wherein the first needling, perforation and/or cut pattern are in a comb-like pattern.