1. A method for sterilizing packaging material in packaging for protein containing products, the method comprising:
irradiating the packaging material using ionizing radiation,
subsequently accelerating diffusion from the packaging material of protein reactive substances or compounds formed in the packaging material during the irradiation.
2. A method according to claim 1, wherein the irradiating is performed using an electron beam.
3. A method according to claim 1, wherein the accelerating diffusion is performed in such a manner that diffusion of protein reactive substances or compounds formed in a surface region of the packaging material is accelerated.
4. A method according to claim 1, wherein the step of accelerating diffusion comprises heating the irradiated packaging material.
5. A method according to claim 4, wherein the heating comprises heating the irradiated packaging material to a temperature which does not exceed 200\xb0 C.
6. A method according to claim 5, wherein the heating comprises heating the irradiated packaging material to a temperature within the temperature interval 40\xb0 C. to 95\xb0 C.
7. A method according to claim 4, wherein the heating is performed using infrared radiation.
8. A method according to claim 4, wherein the heating is performed using an oven.
9. A method according to claim 4, wherein the heating is performed by applying a flow of heated air to the packaging material.
10. A method according to claim 1, wherein the accelerating diffusion comprises subjecting the packaging material to a vacuum.
11. A method according to claim 1, wherein the accelerating diffusion is performed substantially immediately after the irradiation.
12. A method according to claim 1, further comprising forming a packaging, wherein at least part of said packaging being made from the packaging material.
13. A method according to claim 12, wherein the packaging material is a foil, and wherein the forming a packaging comprises welding two foil layers together, thereby forming a reservoir.
14. A method according to claim 12, wherein a product is stored in the packaging.
15. A method according to claim 1, wherein the method is an inline process.
16. A method according to claim 1, wherein the packaging material is a polymer material.
17. A method according to claim 1, wherein the method is performed in a sterile environment.
18. A method of processing a material containing protein reactive substances or compounds, the method comprising:
accelerating diffusion from the material of protein reactive substances or compounds.
19. A method for sterilizing polymer packaging material in packaging for protein containing products, the method comprising:
irradiating the polymer packaging material using ionizing radiation,
subsequently processing the polymer packaging material in such a manner that any protein reactive substances or compounds formed in the polymer packaging material during the irradiation are at least partly removed or rendered unreactive with respect to proteins,
positioning a protein containing product in packaging formed by the polymer packaging material, and
sealing the packaging having the protein containing product positioned therein,
wherein the processing is performed in such a manner that an impurity level in the protein containing product after storage in the packaging for 10 weeks at 5\xb0 C. is within 1.5% of a corresponding impurity level in a comparable protein containing product positioned in a packaging made from a sterilized glass material under similar storage conditions.
20. A method according to claim 19, wherein the processing is performed by accelerating diffusion from the packaging material of protein reactive substances or compounds formed in the packaging material during the irradiation step.
21. A method according to claim 19, wherein the processing comprises heating the packaging material.
22. A method according to claim 21, wherein the heating comprises heating the packaging material to a temperature which does not exceed 200\xb0 C.
23. A method according to claim 22, wherein the heating comprises heating the packaging material to a temperature within the temperature interval 40\xb0 C. to 95\xb0 C.
24. A method according to claim 21, wherein the heating is performed by applying a flow of heated air to the packaging material.
25. A method according to claim 19, wherein the processing comprises subjecting the packaging material to a vacuum.
26. An apparatus for sterilizing packaging material in packaging for protein containing products, the apparatus comprising:
an irradiation station comprising means for emitting ionizing radiation towards the packaging material,
a processing station comprising means for processing the irradiated packaging material in such a manner that diffusion of protein reactive substances or compounds formed in the packaging material during irradiation is accelerated, and
means for conveying the packaging material at least between the irradiation station and the processing station.
27. An apparatus according to claim 26, wherein the means for emitting ionizing radiation comprises an electron beam emitter.
28. An apparatus according to claim 26, wherein the processing means comprises means for heating the packaging material.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A polyolefin resin composition comprising component (A) defined below, 0.001 to 10 parts by weight, based on 100 parts by weight of component (A), of component (B) defined below and 0.01 to 100 parts by weight, based on 100 parts by weight of component (A), of component (C) defined below:
component (A): polyolefin resin, except polyolefin resin which has been graft-modified with a compound selected from the group consisting of unsaturated carboxylic acids and their derivatives;
component (B): carbon black which satisfies requirements (1) and (2) defined below:
requirement (1): containing a volatile component in an amount of less than 0.2% by weight as measured by the method provided in JIS X6221;
requirement (2): containing at least one element selected from the group consisting of iron, nickel, copper, cobalt, aluminum, manganese and vanadium an amount, based on the weight of the carbon black, of 4 ppm or less;
component (C): stabilizer.
2. The composition according to claim 1 further comprising component (D) defined below in an amount of 1 to 400 parts by weight based on 100 parts by weight of component (A):
component (D): filler, except the carbon black of component (B).
3. The composition according to claim 1 further comprising component (E) defined below in an amount of 0.1 to 50 parts by weight based on 100 parts by weight of component (A);
component (E): polyolefin resin which has been graft-modified with a compound selected from the group consisting of unsaturated carboxylic acids and their derivatives.
4. The composition according to claim 1 further comprising components (D) and (E) defined below in a combined amount of components (D) and (E) of 1 to 400 parts by weight based on 100 parts by weight of component (A) wherein the weight ratio of component (D) to component (E) is within the range of from 51 to 1001:
component (D): fillers except the carbon black of component (B);
component (E): polyolefin resin which has been graft-modified with a compound selected from the group consisting of unsaturated carboxylic acids and their derivatives.
5. The composition according to claim 2 wherein component (D) is fiber.
6. The composition according to claim 4 wherein component (D) is fiber.
7. The composition according to claim 2 wherein component (D) is fiber having a weight average fiber length of 2 mm or more.
8. The composition according to claim 4 wherein component (D) is fiber having a weight average fiber length of 2 mm or more.
9. A molded article obtained by molding the composition according to any one of claims 1 to 8.