U.S. patent application number 11/514699 was filed with the patent office on 2007-08-30 for transport and storage container of synthetic material.
This patent application is currently assigned to PROTECHNA S.A.. Invention is credited to Udo Schutz.
Application Number | 20070199937 11/514699 |
Document ID | / |
Family ID | 37492012 |
Filed Date | 2007-08-30 |
United States Patent
Application |
20070199937 |
Kind Code |
A1 |
Schutz; Udo |
August 30, 2007 |
Transport and storage container of synthetic material
Abstract
A transport and storage container of synthetic material for
liquid, pasty, granular and pulverous materials includes a
palette-like base frame and an inner container of synthetic
material placed on the base frame. The inner container has an upper
closeable filling connection and a lower discharge connection with
a discharge fitting or an upper closeable discharge connection. An
outer casing surrounding the inner container is constructed of
grate rods of metal or sheet metal. The inner container of
synthetic material is extrusion blow molded and has a multiple
layer construction, wherein the inner container includes at least
one outer fire protection layer which contains at least one fire
protection agent against the effect of heat.
Inventors: |
Schutz; Udo;
(Selters/Westerwald, DE) |
Correspondence
Address: |
Friedrich Kueffner
Suite 910
317 Madison Avenue
New York
NY
10017
US
|
Assignee: |
PROTECHNA S.A.
|
Family ID: |
37492012 |
Appl. No.: |
11/514699 |
Filed: |
September 1, 2006 |
Current U.S.
Class: |
220/23.91 |
Current CPC
Class: |
B65D 2213/00 20130101;
A62C 2/065 20130101; A62C 3/00 20130101; B65D 77/0466 20130101 |
Class at
Publication: |
220/023.91 |
International
Class: |
B65D 21/02 20060101
B65D021/02 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 1, 2005 |
DE |
10 2005 041 406.0 |
Aug 12, 2006 |
DE |
10 2006 037 944.6 |
Claims
1. A transport and storage container of synthetic material for
liquid, pasty, granular and pulverous materials, the container
comprising a palette-like base frame and an inner container of
synthetic material placed on the base frame, the inner container
having an upper closeable filling connection and a lower discharge
connection with a discharge fitting or an upper closeable discharge
connection, and an outer casing which surrounds the inner
container, wherein the outer casing is constructed of grate rods of
metal or sheet metal.
2. The container according to claim 1, wherein the fire protection
layer contains at least one halogen.
3. The container according to claim 2, wherein the fire protection
layer contains fluoride, chlorine, bromine, or iodine.
4. The container according to claim 1, comprising a fire protection
layer of a synthetic polymer which under the effect of heat forms
crusts which are not combustible.
5. The container according to claim 1, wherein the fire protection
layer is of a synthetic material which contains nanoparticles of
red phosphorus or alumina.
6. The container according to claim 1, wherein the fire protection
layer is of expanded granite.
7. The container according to claim 1, wherein the fire protection
layer is a composite layer composed of at least two layers.
8. The container according to claim 7, wherein the two layers
contain at least one halogen.
9. The container according to claim 7, wherein the two layers
contain fluoride, chlorine, bromine, or iodine.
10. The container according to claim 7, wherein the two layers are
of a synthetic polymer which under the influence of heat forms
crusts which are not combustible.
11. The container according to claim 7, wherein the fire protection
layer is of a synthetic material which contains nanoparticles of
red phosphorus or alumina.
12. The container according to claim 7, wherein the fire protection
layer is of expanded graphite.
13. The container according to claim 1, wherein the fire protection
layer has a coating of an electrically conductive synthetic
material.
14. The container according to claim 1, further comprising a fire
protection casing of sheet metal material between the inner
container and the outer casing.
15. A transport and storage container of synthetic material for
liquid, pasty, granular and pulverous materials, the container
comprising a palette-like base frame and an inner container of
synthetic material placed on the base frame, the inner container
having an upper closeable filling connection and a lower discharge
connection with a discharge fitting or an upper closeable discharge
connection, and an outer casing which surrounds the inner
container, wherein the outer casing is constructed of grate rods of
metal or sheet metal, further comprising a fire protection casing
of sheet metal material between the inner container and the outer
casing, wherein the fire protection casing has an inner and/or
outer coating of synthetic material which contains at least one
fire protection agent against the effect of heat.
16. A drum of synthetic material for transporting and storing
liquid, pasty, granular and pulverous materials the drum having an
inner container of synthetic material, the inner container of
synthetic material being extrusion blow molded an having a multiple
layer construction, wherein the inner container includes at least
one outer fire protection layer which contains at least one fire
protection agent against the effect of heat.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a transport and storage
container of synthetic material for liquid, pasty, granular and
pulverous materials. The present invention particularly relates to
a palette container with a palette-like base frame and an inner
container of synthetic material placed on the base frame, wherein
the inner container has an upper closeable filling connection and a
lower discharge connection with a discharge fitting or an upper
closeable discharge connection, as well as an outer casing which
surrounds the inner container, wherein the outer casing is
constructed of grate rods of metal or sheet metal. The invention
also relates to drums of synthetic material.
[0003] 2. Description of the Related Art
[0004] Containers of synthetic material for transporting and
storing various materials are generally not fireproof.
[0005] DE 101 61 693 A1 describes a palette container of the
above-described type with a fire protection casing arranged between
the inner container of synthetic material and the outer casing,
wherein the fire protection casing is of a sheet metal material
which reflects heat radiation, and an additional fire and heat
installation arranged between the inner container and the fire
protection casing, wherein the additional installation is composed
of a fabric or non-woolen fabric of glass or aluminum fibers, a
ceramic fabric of stone wool or of corrugated card board which is
impregnated with fire-resistant water glass.
[0006] The manufacture of this known palette container, whose inner
container of synthetic material is protected against fire by a fire
protection casing of a sheet metal material which reflects heat
radiation and an additional fire and heat installation arranged
between the inner container and the fire protection casing, is
relatively cumbersome and, therefore, expensive.
SUMMARY OF THE INVENTION
[0007] Therefore, it is the object of the present invention to
develop a fire-proof transport and storage container of synthetic
material for materials of different types which container can be
manufactured inexpensively.
[0008] In accordance with the present invention, the inner
container of synthetic material is manufactured by extrusion blow
molding and has a multiple layer construction, wherein the inner
container includes at least one outer fire protection layer which
contains at least one fire protection agent against the effect of
heat.
[0009] The various features of novelty which characterize the
invention are pointed out with particularity in the claims annexed
to and forming a part of the disclosure. For a better understanding
of the invention, its operating advantages, specific objects
attained by its use, reference should be had to the drawing and
descriptive matter in which there are illustrated and described
preferred embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWING
[0010] In the drawing:
[0011] FIG. 1 is a perspective view of a first embodiment of the
palette container according to the present invention;
[0012] FIG. 2 is a partial sectional view, on a larger scale, of
the wall of the inner container having a three-layer construction
and of the grate casing of the palette container of FIG. 1;
[0013] FIG. 3 is a perspective view of a second embodiment of the
palette container.
[0014] FIG. 4 is a partial longitudial sectional of view, on a
larger scale, of the area of the cover; and
[0015] FIG. 5 is a partial longitudial sectional view, on a larger
scale, of the bottom area of the container of FIG. 3.
DETAILED DESCRIPTION OF THE INVENTION
[0016] The palette container 1 according to FIG. 1, constructed as
a single-use or multiple use container for transporting and storing
liquids, includes as principal components a replaceable,
parallelepiped inner container 2 of synthetic material with a front
wall 3, a rear wall 4 and two side walls 5, 6, a lower and an upper
bottom 7, 8, a filling connection 9 integrally formed with the
upper bottom 7 and closeable with a cover 10, and a discharge
connection 11 integrally formed with a lower portion of the front
wall 3, wherein the discharge connection 11 includes a discharge
fitting 12, and with an outer grate casing 13 of intersecting
horizontal and vertical grate rods 14, 15 of metal for receiving
the inner container 2, and a palette-like base frame 16 with length
and width dimensions which meet European standards.
[0017] The bottom 7 of the inner container 2 which is constructed
as a discharge bottom has a central discharge groove 17 which
descends from the rear wall 5 of the container to the outlet
connection 11 in the end wall 3, and the inner container 2 is
placed with the lower bottom 7 on the correspondingly shaped bottom
18 of the base frame 16.
[0018] The bottom 18 of the palette container 1 intended for
manipulation by means of forklifts, shelf operating systems or
similar transport means, of the base frame 16 of the palette
container 1, rests on four corner legs 19-22, and a rear center leg
23, a front middle leg 24 formed of the bottom 18, wherein the
middle leg 24 is arranged underneath the discharge fitting 12 of
the palette container 1, and two lateral middle legs 25, 26 which
are formed by the outer ends of a bridge-like stiffening sheet
metal 27 for the bottom 18.
[0019] FIG. 2 shows that the end wall 3, the rear wall 4, the side
walls 5, 6 and the lower and upper bottoms 7, 8 of the inner
container 2 of synthetic material manufactured by extrusion blow
molding of a polyethvlene of high density is composed of an inner
layer 28, a middle layer 29 and an outer fire protection layer 30
against the influence of heat.
[0020] For manufacturing the outer fire protection layer 30 of the
inner container 2 of the palette container 1 in particular, and
generally of synthetic material containers such as plastic drums,
various synthetic materials can be used which may contain halogens
such as fluoride, chlorine, bromine or iodine.
[0021] Moreover, the fire protection layer can be constructed in
containers of synthetic material of a polymer material which under
the influence of heat forms crusts which are not combustible.
[0022] Also, the fire protection layer of the container may consist
of a synthetic material which contains nanoparticles, for example,
of heat-resistant red phosphorus or alumina.
[0023] An effective protection against the influence of fire is
provided by an outer fire protection layer 30 which is composed of
an expanded graphite. Under the influence of heat, the graphite
expands and an intumescence layer 31 is formed on the surface of
the inner container, wherein the layer 31 completely surrounds the
grate rods 14, 15 of the grate casing 13. This intumescence layer
insulates the material filled into the inner container against the
flame and prevents further melting of the polyethylene wall of the
inner container.
[0024] The fire protection layer 30 may be constructed as a
composite layer which is formed by at least two of the
above-described fire protection layers.
[0025] In the same manner, the middle layer 29 of the inner
container 2 can also be constructed as a support layer by means of
a composite layer.
[0026] The palette container 32 illustrated in FIG. 3 differs from
the palette container 1 illustrated in FIG. 1 by a moveable
protective cover 33 attached to the grate casing 13, wherein the
cover 35 has a middle access opening 34 to the filling connection 9
of the inner container 2 and a fire protection wall 35 with four
side walls 35a-35d placed in the grate casing 13.
[0027] The fire protection casing 35, the protective cover 33 and
the bottom 18 and the corner and middle legs 19-22, 23-25 of the
base frame 16 of the transport and storage container 32 are
manufactured of a sheet metal material which reflects heat
radiation.
[0028] The side walls 35a-35d of the fire protection wall 35 are
jammed between the bottom 18 of the base frame 16 and the lower
inwardly pulled end 15a of the vertically extending grate rods 15
of the grate casing 13.
[0029] It is also possible to screw the side walls 35a-35d of the
fire protection wall 35 to the lower ends 15a of the vertical grate
rods 15 and/or the lower frame 36 of the grate casing 13.
[0030] By providing a sightly outwardly angled upper edge 37 of the
fire protection wall 35, the insertion of the inner container 2
into the fire protection casing 35 is facilitated and damage to the
inner container during the insertion thereof is prevented.
[0031] The protective cover 33 inserted with its edge 38 into the
upper edge 37 of the fire protection casing 35 is screwed together
with the fire protection wall 35 to the upper ends 15b of the
vertical grate rods 15 of the grate casing 13.
[0032] As is the case in the inner container of the palette
container 1 of FIG. 1, the inner container 2 produced by extrusion
blow molding of synthetic material is composed of an inner layer
28, a middle layer 29 and an outer fire protection layer 30 against
the influence of heat, wherein the fire protection layer may
contain the fire-retarding materials described above in connection
with the palette container according to FIG. 1.
[0033] When manufacturing the outer single-layer or multiple-layer
fire protection layer 30 of the inner container 2 of expanded
graphite, in case of fire the hollow spaces existing between the
inner container 2 and the side walls 35a-35d of the fire protection
wall 35, the protective cover 33 and the bottom 18 of the base
frame 16 are filled out by the intumescence layer 31 of the
expanded graphite which expands under the influence of heat.
[0034] The fire protection casing 35 of sheet metal material and
the intumecence layer 31 of the graphite of the outer fire
protection layer 30 of the inner container 2 ensure an effective
fire protection for the palette container in case of fire.
[0035] In accordance with a further embodiment of the palette
container equipped with fire protection, the fire protection casing
35 of sheet metal material arranged between the inner container 2
and the outer casing 13 is equipped with an inner and/or outer
coating of synthetic material which contains at least one fire
protection agent against the influence of heat.
[0036] Finally, in the transport and storage containers described
above, the fire protection layer of the inner container may be
coated with an electrically conductive synthetic material.
[0037] While specific embodiments of the invention have been shown
and described in detail to illustrate the inventive principles, it
will be understood that the invention may be embodied otherwise
without departing from such principles.
* * * * *