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1. WO1997043512 - CONTENANTS ININFLAMMABLES A HAUTE PERFORMANCE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What Is Claimed Is:
1 1. A fire and heat resistant storage container

2 comprising:
3 a) at least two body portions movable relative to

4 one another between a mutually mated position, wherein said

5 body portions cooperatively define a fully enclosed

6 compartment, and a separated position, permitting physical

7 access to said compartment;
8 b) each of said body portions including a layer of

9 protective material which completely surrounds said compartment

10 when said body portions are in said closed position, said

11 material comprising a ceramic gel composed primarily of an

12 aqueous solution of sodium silicate or potassium silicate and

13 a salt of a polyvalent metal.
1 2. The container of claim 1 wherein said polyvalent metal

2 is at least one of calcium, magnesium, aluminum, zinc and iron.

1 3. The container of claim 2 wherein said polyvalent metal

2 is calcium or magnesium.
1 4. The container of claim 1 wherein said salt is calcium

2 chloride.
1 5. The container of claim 1 wherein said material

2 comprises a mixture of water glass, calcium chloride granules

3 and saturated calcium chloride solution.
1 6. The container of claim 5 wherein said mixture further

2 comprises potassium acetate.
1 7. The container of claim 6 wherein said mixture

2 comprises about 42 pounds of water glass, 240 milliliters of

3 potassium acetate, 6 pounds calcium chloride granules and 360

4 milliliters of saturated calcium chloride solution.
- l 8. The container of claim 1 wherein each of said body

2 portions comprises inner and outer, moisture impervious

3 substrate layers which are significantly thinner than said

4 layer of protective material and which are supported in spaced

5 relation, said protective material substantially completely

6 filling the space between said substrate layers.
1 9. The container of claim 8 wherein said substrate layers

2 are of plastic.

10. The container of claim 9 and further comprising a metal layer in covering relation to at least most of at least one surface of at least one of said substrate layers of each of said body portions.
11. The container of claim 10 wherein said substrate layers are blow-molded to conform to the configuration of said metal layer.
12. The container of claim 11 wherein said metal layer includes at least one through opening and the material of the substrate layer which is covered by said metal layer protrudes into said opening.
13. The container of claim 8 and further including a reinforcing layer positioned within said layer of material intermediate of said substrate layers.
14. The container of claim 13 wherein said reinforcing layer is a mesh material extending substantially the full length and width of the space between said substrate layers. 15. the container of claim 14 wherein said substrate layers are roto-molded to predetermined configurations.
16. The container of claim 1 and wherein each of said body portions further include a second protective layer which completely surrounds said compartment, inwardly of said ceramic gel layer, when said body portions are in said closed position. 17. The container of claim 15 wherein said second layer is a thermal insulation layer of polyurethane foam.
18. The container of claim 15 wherein said second layer is a material which changes from solid to liquid phase at a temperature between about 100 and 124 degrees F.
19. The container of claim 18 wherein said second layer material comprises a mixture of water glass and at least one hydrated salt.
20. The container of claim 19 wherein said second layer material comprises a mixture of water, water glass, sodium phosphate dibasic (anhydrous) and sodium phosphate tribasic (dodecahydrate) .
21. The container of claim 20 wherein said sodium phosphate dibasic and tribasic are present in substantially equal parts.
22. The container of claim 21 wherein said second layer material consists essentially of a mixture of about 32 parts water, 16 parts water glass (30 to 40 percent solids) , 40 parts sodium phosphate dibasic (anhydrous) and 40 parts sodium phosphate tribasic (dodecahydrate) , all of said parts being by weight.
23. The container of claim 1 wherein each of said body portions comprise a second protective layer, inwardly of said ceramic gel layer, and a third protective layer, inwardly of said second layer, each of said second and third layers completely surrounding said compartment when said body portions are in said closed position.
24. The container of claim 23 wherein said second layer is a foam plastic thermal insulating material and said third layer is a material which changes from solid to liquid phase at a temperature between about 100 and 124 degrees F.
25. The container of claim 24 wherein said second layer material is polyurethane foam and said third layer material comprises a mixture of water glass and at least one hydrated salt.
26. The container of claim 25 wherein said third layer material is a mixture consisting essentially of water, water glass, sodium phosphate dibasic (anhydrous) and sodium phosphate tribasic (dodecahydrate) .
27. The container of claim 1 wherein said body portions include a base having bottom and side walls defining an open top, and a lid positionable in covering and uncovering relation to said open top to define said mated and separated positions of said body portions.
28. The container of claim 27 and further comprising hinge means connecting said lid to said base for pivotal movement between said covering and uncovering positions.
29. The container of claim 28 and further including a ceramic blanket covering at least portions of said bottom and side walls.
30. The container of claim 29 wherein said bottom and side walls and said lid each include a plurality of spaced, plastic layers, and further comprising a metal layer in outwardly covering relation to said ceramic blanket.
31. A fire and heat resistant container suitable for storage and protection of articles which are subject to damage by exposure to temperatures higher than about 125 degrees F, said container comprising:
a) at least two body portions movable relative to one another between a mutually mated position, wherein said body portions cooperatively define a fully enclosed space for storage of said articles, and a separated position, permitting physical access to said space for insertion or removal of said articles;
b) each of said body portions including at least two continuous, superposed layers of protective materials each of which completely surrounds said enclosed space when said body portions are in said mated position, the outermost and innermost of said layers comprising, respectively,
i) a first, ceramic gel material composed
primarily of water glass and a salt of a
polyvalent metal, and
ii) a second material having a melting
point between about 100 and 124 degrees F
and a heat of fusion greater than about 250
joules per gram.
32. The container of claim 31 wherein an intermediate layer of a third, thermal insulating material is interposed between said outermost and innermost layers.
33. The container of claim 32 wherein said third material is a solid layer of polyurethane foam.
34. The container of claim 31 wherein said first material is a mixture of primarily water glass and calcium chloride. 35. The container of claim 34 wherein said calcium chloride includes both calcium chloride granules and saturated calcium chloride solution.
36. The container of claim 34 wherein said first material further includes, in an amount less than said calcium chloride, potassium acetate.
37. The container of claim 31 wherein said second material is a mixture of primarily water glass and sodium phosphate.
38. The container of claim 37 wherein said sodium phosphate includes both sodium phosphate dibasic (anhydrous) and sodium phosphate tribasic (dodecahydrate) .
39. The container of claim 31 wherein said first material is a mixture of primarily water glass and calcium chloride, and said second material is a mixture of primarily water glass and sodium phosphate.
40. The container of claim 39 wherein said first material is a mixture of primarily water glass, calcium chloride granules and saturated calcium chloride solution, and said second material is a mixture of primarily water glass, sodium phosphate dibasic (anhydrous) and sodium phosphate tribasic (dodecahydrate) .
41. The container of claim 39 wherein said first material further includes, in an amount less than said calcium chloride, an alkali metal salt.
42. The container of claim 41 wherein said alkali metal salt is potassium acetate.
43. The method of fabricating components for use in fire and heat protective containers, said method comprising:
a) forming moisture-impervious wall means to define a hollow, enclosed space with an opening through which said enclosed space is accessible;
b) preparing a ceramic gel material by mixing a plurality of ingredients including at least an aqueous solution of sodium or potassium silicate and a salt of a polyvalent metal, said material being initially in flowable form and thereafter hardenable at room temperature to non-flowable form;
c) injecting said material while in said flowable form into said enclosed space through said opening; and
d) closing said opening with a moisture-impervious seal. 44. The method of claim 43 wherein said container component is formed in an essentially flat configuration, having a length and a width significantly greater than its thickness, with spaced, upper and lower walls each having a thickness significantly less than the space between them, said walls being joined about their peripheries to define said enclosed space.
45. The method of claim 43 wherein said wall means are of plastic and said seal comprises a plastic plug permanently affixed to one of said walls by spin welding.
46. The method of claim 43 wherein said wall means are formed by blow molding.
47. The method of claim 43 wherein said wall means are formed by roto-molding.
48. The method of claim 43 wherein said gel material substantially fully fills said enclosed space.
49. The method of claim 43 wherein gel material is prepared by mixing at least water glass and granular calcium chloride.
50. The method of claim 49 and further including mixing saturated calcium chloride solution with said water glass and calcium chloride substantially simultaneously with said injecting step.
51. The method of claim 50 wherein the proportions of said ingredients in said mixture are about 42 lbs water glass, 6 lbs calcium chloride granules and 360 milliliters saturated calcium chloride solution.
52. The method of claim 49 and further including mixing an alkali metal salt with said water glass prior to mixing of said granular calcium chloride.
53. The method of claim 52 wherein said alkali metal salt is potassium acetate.
54. The method of claim 53 and further including mixing saturated calcium chloride solution with said mixture of water glass, potassium acetate and granular calcium chloride substantially simultaneously with said injecting step.
55. The method of claim 54 wherein the proportions of said ingredients in said mixture are about 42 lbs water glass, 240 milliliters saturated potassium acetate solution, 6 lbs calcium chloride granules and 360 milliliters saturated calcium chloride solution.
56. The method of claim 43 and further comprising incorporating gas bubbles substantially uniformly into said gel material while in said flowable form so that, upon hardening to said non-flowable form, said gas bubbles form between about 1% and 20% of said gel material.
57. The method of claim 43 wherein said plurality of ingredients includes granules, particles or fibers of at least one inert material.
58. The method of claim 57 wherein said inert material is at least one of foamed polypropylene granules, wood particles and plastic, glass or ceramic fibers.
59. The method of claim 58 wherein said plurality of ingredients and the proportions thereof in said mixture are about 8 Kg water glass, 300 milliliters of saturated sodium chloride, inert material to form between about 1% and 20% of the final volume of said mixture, and 1000 grams calcium chloride granules.
60. The method of claim 43 wherein forming said wall means includes placing a metal layer in contact with at least a portion of the inside of a mold, placing a layer of plastic material within said mold and permanently bonding opposing surfaces of said metal and plastic layers by molding operation. 61. The method of claim 60 and further comprising forming at least one cut-out area in said metal layer prior to placement thereof in said mold, said plastic layer being continuous and extending into said cut-out area of said metal layer upon completion of said molding operation.
62. The method of claim 43 wherein said wall means comprise a pair of spaced, substrate layers and further comprising positioning within said enclosed space a layer of mesh material in spaced relation to both of said substrate layers prior to said injecting step.
63. The method of claim 62 wherein said mesh layer is galvanized metal.
64. The method of claim 43 and further including applying to an exterior surface of said wall means a permanent coating of a material which exhibits intumescence upon application of heat.
65. The method of fabricating a low-temperature, phase-change article for use as an internal liner in fire and heat protective containers, said method comprising:
a) forming moisture-impervious wall means to define a hollow, enclosed space with an opening through which said enclosed space is accessible;
b) mixing water glass and a hydrated salt to form a slurry which changes between solid and liquid phases at a temperature between about 100 and 124 degrees F with a heat of fusion of at least about 250 joules per gram;
c) injecting said slurry into said enclosed space through said opening; and
d) closing said opening with a moisture-impervious seal.
66. The method of claim 65 wherein said hydrated salt is sodium phosphate.
67. The method of claim 66 wherein said slurry includes both sodium phosphate dibasic (anhydrous) and sodium phosphate tribasic (dodecahydrate) .
68. The method of claim 67 wherein the proportions of ingredients in said slurry are about 32 parts water, 16 parts water glass (30-40% solids) , and 40 parts each of sodium phosphate dibasic and sodium phosphate tribasic, all of said parts being by weight.