DE2232233A1 - INSULATED COOLER WITH CURVED SURFACES AND A METHOD AND DEVICE FOR ITS INSULATION - Google Patents

Description

Patent attorneys Dipl.-Ing. F. Weickmann,

Dipl.-Ing. H.Weickmann, Dipl.-Phys. Dr. K. Fincke Dipl.-Ing. FA ¹ Weιckmann, Dipl.-Chem. B. Huber

8 MUNICH 86, POST BOX 860 820

MÖHLSTRASSE 22, CALL NUMBER 48 39 21/22 ". <98 39 21/22)

V Jn. 1

THE DOW CHEMICAL COMPANY
929 East Main Street
Midland, Michigan, V.St.A.

Insulated cooling container with curved surfaces as well as a Method and device for its isolation.

The present invention relates to an insulated cooling container with curved surfaces and to a method and a device for its insulation.

An object of the present invention is to provide an improved method for insulating cooling containers or vessels.

The method according to the invention requires a minimal working space outside the container, the damage prevails Stress cracking in the insulation under service conditions is minimized and can be used to prevent a Apply protective cover against steam on the outer surface of the container.

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Another object of the present invention is to provide an improved insulated refrigerated container or cryogenic container and a device for producing reinforced insulation around such Container.

The inventive method comprises the application of a thermally insulating material in the form of a Variety of closed loops or turns around the circumference of the container in order to do this at least to enclose part of the container with an insulating cover.

The insulation applying device of the present invention comprises in cooperative combination a first support device, a device for circumferentially surrounding the first support device to move an object to be isolated, an isolation-applying device, which by the first Support device is carried and in a desired manner relative to the first support device is movable, wherein the insulation applying device is set up to be in an im essential spiral path to move over the object to be isolated.

The insulated cooling container according to the invention or deep temperature container comprises at least a first receptacle with an outer curved surface, a Insulating layer disposed adjacent the outer surface of the container and having at least one substantial layer Part of the same covered, with the insulation in the form of a

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Number of loops or turns of a strip-shaped Material is formed, and adjacent turns of the insulation adhere to one another.

The term "spiral creation" refers to the creation of structures by progressive deposition a foam or other building material through a material-applying or -deposing device, which moves along a predetermined track to apply successive loops or turns, the progressively applied, successive loops brought into adhesive connection with adjacent loops will.

Other features and advantages of the present invention will emerge from the following description in conjunction with the drawings.

In the following the invention is based on schematic drawings explained in more detail using exemplary embodiments.

Show it

1 shows the insulation of a spherical container according to the present invention}

2 and 3 parts of a head for applying foam, as used in the device according to FIG can be}

4 shows a view of a support device or Guide device for partial positioning

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of the head for applying foam according to FIGS. 1, 2 and 3}

5, 6 and 7 are views of foam welding or -connecting assemblies, which with the head for applying foam according to FIGS. 2 and 3 be used}

Figure 8 is a view of a foam welding or joining device as used when in the preparation of the insulation according to the invention a pre-formed foam strip is used}

9, 10 and 11 are views of a reinforcement application device; which is adapted to work in combination with the apparatus of FIG. 8 to to make a reinforced preformed foam strip}

Fig. 12 and 13 views of the fastening and positioning the welding and reinforcing device according to FIGS. 8 to 11}

14 shows a detail from the construction according to FIG. 1 in connection with a device for applying a vapor protection cover}

15 and 16 the function of the device for applying the vapor protection cover}

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15A shows a view of part of the device according to FIG. 15 in section along the line 15A-15A in Fig. 15}

Fig. 15B, 15C and 15D sections through the steam protection cover in different stages of their production;

17 and 18 show two views of an alternative embodiment of the head for applying foam, which with the device according to FIG. 1 can be used}

Fig.i7A and 17B the different ways of attaching reinforcing material}

19 shows a section through an embodiment of a Connection between adjacent turns when using preformed foam insulation;

FIG. 20 shows a partial illustration in section of a applied insulation using preformed foam;

FIG. 21 a partial section through an applied Insulation, which uses material that is foamed into place;

22, 23 and 24 cross-sectional representations of alternative Connections between adjacent applied strips in accordance with the present invention;

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Fig.25 shows a connection between insulation that is adjacent the container according to Fig. 1 was made and insulation removed from this container has been manufactured or preformed;

Fig. 26 and 27 alternative embodiments of the invention Insulating layers or layers.

Referring now to Figure 1, there is shown schematically and generally a container assembly and apparatus for applying insulation denoted by 40 .. The assembly 40 comprises an im essential spherical tank 41, which encloses an inner space, not shown, which is used to hold cold materials is determined. The tank 41 has an upper part 42 and a lower part or bottom part 43. The tank 41 has an essentially spherical outer, double or three-dimensionally curved surface Approximately in the area between the upper part 42 and the bottom part 43 is a circumferential or substantially equatorial extending flange 45 is provided which extends around the tank. A support 46 of essentially cylindrical shape is arranged around the tank 41. The support 46 has an upper end 48 as well as a lower or bottom end 49, which are arranged around the tank 41 around. The upper end 48 of the cylindrical support 46 is in operative engagement with the flange 45. The second end 49 of the support 46 is on one Floor or deck 51 of a ship or other supporting structure attached. The tank owns adjacent its upper end has a protective housing 53, which is provided for liquid lines, not shown, Valves and the like. A first or top

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BATH

■ - 7 -

Isolation device 55 is substantially adjacent to that upper part 42 of the tank 41 is arranged. The isolation device comprises in cooperating combination a guide device 57, preferably in the form of a rail, which is held in a fixed position relative to the tank 41 by means of a number of substantially circumferential supports 59 arranged around them. The supports 59 are attached to the floor 51. An essentially arcuate support frame 61 extends from a location substantially adjacent the upper part 42 of the tank 41 to a location between the flange 45 and the bottom 43 of the tank 41. The arched support frame has an upper end portion 62 and a lower end portion 63. A drive device 65 for the support frame is attached to the frame 61 in a position which is substantially adjacent to the guide means or Rail 57 is. The drive device 65 includes a motor 66 which is operatively connected to a wheel or gear 67 in FIG Connection is, which is in driving contact with the rail 57. Adjacent the first end 62 of the support frame and in operative combination therewith, a pivot assembly 69 is provided. The pivot assembly 69 includes a pin or a pivot shaft 71 which is fixed to the housing 53 and on a generating axis of the ball and is substantially equidistant from each location of the annular rail 57. The shaft 71 performs pivot assembly 69 therethrough and has one thereon swivel assembly 73 located away from housing 53. This rotary joint assembly 73 includes rotary joints for an energy source to supply electrical, hydraulic and / or pneumatic energy. The pivot bearing

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assembly 69 has a peripheral platform 74 and an annular Guide bearing 75, which engages a flange 76 of the housing 53, to axial wobbling movements of the support frame 69 to prevent. A source of insulating material 78 is movably arranged on the platform 74. A source of material 79 is arranged adjacent to the assembly 69! a lead 81 extends from the source of insulating material 78 to a location adjacent the frame 61 which supports a head 82 for applying the insulation suitable for Receive foam or foamable material from foam feeder 81 and use it as a continuous strip to be applied to an adjacent strip. The foam application head 82 that applies foam strips 83 has, in operational cooperation therewith, a device 84 for applying a vapor protection cover, the latter means moving a fixed distance from the head for applying foam. A second or lower insulating device is arranged essentially adjacent to the bottom 43 of the tank 41, which is indicated generally by the reference numeral 86. The isolation device 86 includes an arcuate support frame 87 with a first end 88 and a second end 89, with a drive assembly 91 in the region of the second end 89 of the support frame is attached and a pivot assembly 92 is pivotably articulated in a position which is substantially coaxial with the pivot axis 7I. On the support frame A head 93 for applying foam is movably arranged in 87. A lower circumferential guide device or Rail 95 is arranged inside the cylindrical support and is drivingly connected to a wheel 96 ", which is carried and driven by the drive assembly 91

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_ Q - «

will. The pivot assembly 92 has an adjustable
second foam source 98 attached thereto. A material supply device 99 provides a supply of material
through the cylindrical support 46.

In operation of the apparatus depicted in FIG. 1, generally the top of the container and a portion of the cylindrical support are isolated by first positioning the head 82 adjacent the lower end 63 of the frame 61 for applying foam. The insulation such as plastic foam from the foam source
is applied to the application: op f and a continuous strip of foam is deposited around the perimeter of the support 46 around. The first strip
the insulation can be held in place by any means, such as by
Adhesives placed on the support of the tank
Support arms and the like. As soon as the first turn of the foam has been applied, the following turns or loops of foam are applied and the one previously applied
Turn connected. While the support frame 61 rotates around the tank 49 and applies successive strips,
For example, the application head 82, ie the head for applying foam, is moved upwardly from the lower end portion 63 of the support frame towards the upper end 62 thereof, and in this way applies the desired insulating material in a uniform manner and at a desired speed. The apparatus and method require little supervision other than providing a supply of material for the insulation foam strip.

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The lower insulation applicator operates in in a substantially similar manner, with an insulating strip on the tank 41 in substantially one location adjacent the second end 89 of the support frame 81 is applied by the application head 93 and downwardly from the equatorial flange of the tank is wrapped away to essentially a predominant part of the lower To cover area. A substantially cylindrical insulating member 101 is on the inner surface of the cylindrical Support 46 arranged and the gap between the insulating element 101 and the spiral applied Insulation is filled with insulating material 102, which is in the form of preformed plates such as Plastic foam sheets or in the form of plastic foam foamed in place, made of foamable, curable materials is formed, is provided. Here, a lower equatorial region 104 of the tank receives 4I no direct application of insulating material. However, the heat input to the tank 41 must be substantial on its way Overcome distance through support member 46, outer insulation 83, and inner insulation 101.

Figures 2 and 3 show a front view and a plan view of an application head, i.e. a head for application of insulation, with the weld assembly removed is. The device according to FIGS. 2 and 3 is indicated generally by the reference numeral 110 and is in particular suitable for applying preformed insulation strips made of foamed thermoplastic Plastic or strips that have thermoplastic surfaces that can be connected to one another by means of heat.

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The device 110 is in connection with a tank or Container wall 111 shown * The device 110 comprises a cooperating frame or support device 112 with an essentially L-shaped shape. On the frame 112 is one of this away extending support 113 arranged. The support 113 is in operational engagement with one Support arm 114, which in turn attaches to a carriage on an arcuate support such as one of the support frames 61 and 87 of FIG. 1 is supported. The support 113 is pivotably articulated on the arm II4. On the support 113 is a side pivotable at a location between the arm 114 and the frame 112 Adjusting device or a liquid-operated piston and cylinder means 116 pivotally extending between the arm 113 and the carriage that extends on the arched support frame runs. The liquid operated Piston and cylinder device, provides support 113 in their angular position to the support arm 114 and thus the frame 112 relative to the wall 111 a. The frame 112 carries a drive motor 118 which is in driving connection with a first drive roller 119 stands. Preferably, the motor 118 is an electric one Gear motor, or a hydraulic or pneumatic motor. A second drive roller 120 and a third drive roller 121 are pivoted to the frame 112 in a rotatable manner. A number of straps 122 are preferably V-shaped Training engage in corresponding grooves in the rollers 119, 120 and 121 and create a surface with a high friction. The axes of the drive rollers 119, 120 and 121 are essentially in a plane which is in

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extends substantially parallel to the wall 111. The drive rollers 119, 120 and 121 extend in one Distance of the support 113 from the frame 112 downwards. A first lateral guide roller 123 is in arranged substantially opposite the first drive roller 119. A second guide roller 124 is opposite the drive roller 121 arranged. The axes of the rollers 119 and 123 lie essentially in one plane and The rollers 121 and 124 also lie essentially in one plane. The roller 123 is rotatable in a pivot bearing

125 attached. The pivot bearing 125 is supported by a shaft

126 supported in a bearing 127 attached to the frame 112. A pretensioning device or Spring 129 is used to preload the pivot bearing 125 and the roller in the direction of the drive roller 119.

Roller 124 is in a similar assembly to that with the reference numeral 131 is incorporated, which biases the roller 124 towards the drive roller 121. The rollers 123 and 124 can rotate about their central axis and in the direction of the adjacent drive roller and move away from this, but with their axes of rotation substantially parallel to the axes of rotation of the associated Drive rollers are held. A roller adjuster is attached to the frame 112. The roller adjuster is preferably a piston and cylinder device actuated by liquid or compressed air with an extendable one Rod or an extendable arm 1351 the rod 135 is in operative engagement with a Pressure roller frame 136, which in turn carries two pressure rollers and 138, which are also referred to as pressure rollers and are supported in this framework 136.

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The pressure rollers 137 and 138 have axes of rotation which lie in a plane which is essentially normal to a plane which contains the axes of the rollers 119, 120 and 121 and normal to a plane which contains the axes of the rollers 123 and 124, extends. In this way, the three sets of rollers form a channel or guide trough, with the drive rollers 119, 120 and one side of the channel, the rollers. ·. 123 and 124 form the opposite side and rollers 137 and 138 form the upper limit of the channel generally designated by the reference numeral 141. In Figure 2, a first Schaumelement- _e is disposed in the passage 141 142nd The foam element 142 is arranged essentially adjacent to a foam element 142a and a fibrous insulating wadding 144 is arranged between the foam element 142a and the tank wall 111. A guide roller assembly 145 is attached to the arm 114 and is used, if desired, to hold the application assembly, ie, the insulation application head 110, spaced from the wall 111. A limit sensor 146 such as a single pole electrical switch, a pneumatic control valve or the like is carried by the guide roller assembly 145 and is connected to a device not shown for controlling the position of the application head 110. Therefore, when the rollers 147 of the guide roller assembly 145 no longer contact the wall 111 for a predetermined distance, an appropriate correction is made. A welding assembly 150 fastened to the frame 112 is also shown schematically in FIG. 3.

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4 shows schematically the position of the arms 114, the lateral positioning device 116 and a carriage movable along the arched support frame relative to one another. Reference numerals 153 and 154 denote side parts of the arcuate support frame similar to the arcuate support frame shown in FIG. 1, 61 and 87. The side part 153 has a disposed therein first rack 155 _f while in the side portion 154, a second, similar rack 156 is disposed. A frame 158 of the carriage is arranged between the frame parts, ie the side parts 154 and 153. The frame carries a first gear 159 and a second gear 161. The gears 159 and 161 engage the racks 155 and 156, respectively. The gears 159 and 161 are driven at the same speed by a motor, not shown. The frame 158 carries an adjustably attached support frame 163. The support frame 163 is connected to the frame 158 via first and second. Supports or 166 adjustable length connected. The adjustable length supports can be of any construction, but can advantageously be in the form of a conventional scissor lift and are driven by a motor, not shown, which is actuated by the limit sensor 146 shown in FIGS.

FIGS. 5, 6 and 7 schematically show three views of the welding or connecting head, which is also shown in FIG is shown schematically and denoted by the reference numeral 150. The welding head 150 comprises a frame I70,

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with whom he cooperates. In frame 170 are first and second guides 171 and 172 are formed. A substantially wedge-shaped heating plate 174 is on one Carriage 175 attached, which is slidably arranged on the guides 171 and 172. A linear adjuster 177, such as a pneumatic or hydraulic piston and cylinder device, is immobile attached to the frame 170 and connected to an arm or connector 178. Of the Arm 178 is generally U-shaped (for mechanical simplicity) and is adapted to support the carriage 175 in one of two extreme positions, which are allowed by the guides I7I and 172 to move. At the frame I70 is a first or vertical support 181 attached. The support 181 carries an upper pressure roller 182 which is attached to an upper part of the foam element 141b attacks. With the upper side of the foam element that side is meant that of the last applied strip and is removed from the heating plate. The vertical support 181 or the frame 170 carry a second or separation roller I84, which is used to maintain a desired distance between a previously applied foam strips such as foam strip 141c and foam strip 141b that is straight is applied before is seen. The separation roller 184 is substantially parallel to roller 182. "As shown in Figures 5 and 6, rollers 182 and I84 storage facilities 182a and 184a holding the role, respectively Divide it into two sections and allow the area of the roll with the foam strip 141b without obstruction to be engaged by an external repository,

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which in certain cases interferes with a wall, such as the wall 111a shown in FIG. 6, for example. A side guide roller 186 is rotatably mounted in the frame 170 and extends on both sides of the plane of the heating plate and creates an inevitable guidance of the frame on an already applied strip, such as the strip 141c in Fig. 6. Advantageously, the frame 170 is pivotable on the frame of the head for applying the insulation attached by means of a first pivot bearing 188. The pivot bearing 188 allows rotational movement about an axis lying in a plane substantially parallel to the plane of the Heating plate is. The pivot bearing 188 in turn carries a horizontal or second pivot bearing 189, which a movement of the frame I70 in a plane parallel to the plane of the heating plate and about an axis normal to the plane of the heating plate. A linear one Adjusting device 191 such as a hydraulic piston and cylinder device, which with a Pressurized fluid or pressurized gas source in connection can serve to position frame 170 relative to frame 112.

In Fig. 8 is schematically one embodiment of the foam material source 78 of FIG. 1 and designated generally by the reference numeral 200. The foam material source 20p is a welding or joining device especially designed for use with preformed billets. Strip made of plastic foam is suitable and equipped to do so is to connect the strips with their ends or a connection by butt welding the strips to manufacture. The foam material source or weld assembly 200 includes a frame 201 on which rotatable

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first and second feed drive rollers 202 and 203 are attached. The drive rollers 202 and 203 are driven by a motor not shown. A second or discharge pair of drive rollers 205 and 206 is spaced apart on the frame 201 and independent of one not shown suitable drive device driven. The first and second pairs of drive rollers have im essentially parallel axes and are arranged on one side of the frame 201. Preferably each is Pair of rollers, i.e. rollers 202 and 203 and rollers 205 and 206 are each resilient to one another pre-tensioned and adapted to produce a strip of pre-formed plastic foam of an appropriate dimension to take between them. The frame 201 has guides or guide slots 208, 209 and 210. The guides 208, 209 and 210 are parallel to each other and take a carriage 212 sliding therein on. The carriage 212 slides freely between the feed rollers 202 and 203 and the discharge rollers 205 and 206 adjustable. The carriage 212 has a guide or sliding guide 214 formed therein, which is in a Direction extending substantially perpendicular to the main dimensions of the guides 208, 209 and 210. A heating plate 215 is slidably mounted in the guide 214. A first pair of carriage guide rollers 217 and 218 with axes substantially parallel to each other and parallel to the axis of roller 202 are substantially disposed adjacent to rollers 202 and 205. A second pair of carriage guide rollers 219 and 220 are rotatably attached to the frame 212 and opposite the

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Rollers 217 and 218 arranged. The axes of the rollers 219 and 220 are substantially parallel to the axes of rollers 217 and 218. Rollers 203, 219, 220 and 206 form one side of a foam passage or guide 221. The second is substantially parallel opposite side is formed by rollers 202, 217, 218 and 205. The remaining side of the passage or channel 221 is formed by the frame 201. In the channel 221 is a first foam strip 221a and 221a a second strip of foam 221b is shown with the ends the same rest on the heating plate 215. The heating plate 215 is operative with an adjuster combined, for example in the form of a linear actuator, such as a compressed air actuated or hydraulic piston and cylinder device is formed, which enables the heating plate at least partially disposed in channel 221 or withdrawn entirely from channel 221. For simplification the illustration and to keep the illustration clear, this setting device is not shown. A resilient biasing device 223, such as a spring, is on the one hand with the carriage 212 and on the other hand connected to the frame 201 so that it moves the carriage 212 towards the feed rollers 202 and 203 pushes or pulls. The frame 201 has an additional surface 224 that is supported by the feed drive rollers 202 and 203 is arranged remotely and is arranged substantially adjacent to the discharge rollers 205 and 206 and is set up for this. To receive material from the latter.

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2232? 33

In operation of the foam material source or weld assembly 200, a foam strip, such as for Example of the strips 221a, the feed rollers 202 and 203 supplied. The strip passes straight through the channel 221 with the heating plate 215 being withdrawn before the end of the strip passes the heating plates 215. The end of the strip 221b is between the rollers 202 and 203 are inserted and pressed into a position between the guide rollers 218 and 220. the Heating plate 215 is placed between the ends of the strips and the ends of the strips are in contact pressed with the heating plate, either by hand or by means of the rollers 202 and 203, a pressure on the Strip 221b is exerted. Because of its sprung When installed, the carriage 212 allows the hot plate to sit in the essentially freely set between the ends of adjacent strips. Once the ends of the thermoplastic Foam have been heated to a desired extent to allow them to adhere or stick together, the heating plate 215 is quickly withdrawn and the ends softened by the heat are brought into a position where they meet. The heat dissipation from this area causes a solidification of the thermoplastic material between the foam strips and weld these together. The weld is preferably carried out so that the axes of the two strips slightly deviating from an in-line orientation, this deviation being the curvature of the foam area to be covered is approximately adapted. Such a deviation from aligned alignment can usually simply by hand or by setting the

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Guide rollers 217 and 218 can be achieved. By providing such minor misalignments, stress concentrations at the weld spots are avoided when the strip is being guided around a curved surface, such as the foam feeder 81 shown in FIG.

Referring now to Figure 9, there is shown an optional desirable enhancement device and generally associated with that Designated reference numeral 230 and set up in the additional area 224 of the device 200 according to FIG Fig. 8 to be used. The reinforcement device 230 includes a frame 231, which is optionally integral be formed with the frame 201 of the welding assembly 200 or optionally detachable from the latter frame 201 can. In order to be able to more easily recognize the position of the reinforcement device relative to the welding assembly 200 the rollers 205 and 206 are drawn in broken lines in FIG. The frame 231 carries a number of heating elements, which are designated by the reference numerals 233, 234, 235 and 235a. The heating elements 233, 234, 235 and 235a are designed to be essentially linearly elongated. The heating elements 233 and 234 are essentially positioned adjacent the face of the frame 231, while the heating elements 235 and 235a are vertically spaced from the base and in positions substantially coincident with the bottom and one side of the Channel 221 of the welding assembly 200 match. Substantially adjacent heating elements 233 and 234 a first loading or application roller 236 is rotatable, mounted on the frame 231. A second application roller

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is arranged adjacent to the heating elements 235 and 235a. The first application roller 236 each has projecting rings 236a and 236b which are provided with a groove and which are arranged adjacent to the heating elements 233 and 234; The application roller 237 has a similar pair of projecting rims, each of which is disposed adjacent to the heating elements 235 and 235a, respectively. One of these protruding rims 237a is shown. A guide roller 238 is in operative communication with the application rollers 236 and 237 to push a foam strips to the role of 237 ^u ™. A similar guide roller is provided in connection with the application roller 236, but has been omitted from the illustration. Essentially adjacent to the application rollers 236 and 237, cooling devices are provided, preferably in the form of air nozzles, the cooling devices adjacent to the application roller 236 being designated by 239 and nozzles 241 being provided adjacent to the application roller 237. Two sets of guide rollers 242 and 243 are provided substantially adjacent the air nozzles and in a remote location from the application rollers 236 and 237. These guide rollers 15 and 243 essentially form a continuation of the channel 221 in FIG. 8 and extend with their axes parallel to the discharge rollers 205 and 206.

Fig. 10 shows schematically the roller arrangement in a section along a line 10-10 through the reinforcement device 230 in Fig. 9 and shows the location of the application rollers 236 and 237 and roller 238 together with a fourth roller 238a, which is not shown in FIG

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is relative to each other. The axes of the four rollers are essentially in one plane and the rollers are arranged to form a passage 221c through which a foam strip or foam strip how, for example, the strip 221d is guided. An elongated reinforcement means 245 such as filament or yarn is in operative engagement with the protruding rim 237a the application roller 237 is shown. The reinforcing agent 245 is preferably from a source of reinforcing filament 246, such as a spool, drum, or other suitable means. Similar reinforcing means are provided in the grooved projecting rims 237b, 236a and 236b of FIG not shown sources or supplies supplied.

In this way, a continuous strip of foam coming from the welding assembly 200 is heated at locations corresponding to the heating elements 233, 234, 235 and 235a. The thermoplastic foam is melted or softened into an easily deformable state, but only to a temperature below that at which substantial decomposition takes place. Reinforcing fibers, such as the elongated reinforcing means or fibers 245, are then pressed into the heat-plasticized foam surface by means of the projecting rims 236a, 236b, 237a and 237b of the application rollers 236 and 237, respectively. In general, a thermoplastic foam suitable as an insulating layer is relatively stiff at ambient temperatures. Under these conditions the collapsed foam will itself

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harden and effectively entrap the filamentary reinforcing agents therein. Such reinforcement can, depending on the requirements, of the construction produced in each case from a glass fiber strand or a Fiberglass sliver into a single metal wire such as a smooth fence wire vary. Such an elongated reinforcement is preferred applied to the part of the strip which will then be the outside of the construction, i.e. the insulated container and on the part of the strip that lies between adjacent strips. In this way lies in of the completed structure, the reinforcement applied by the protruding rims 237a and 237b on the outside surface of the insulation, such as the outside surface of insulation 83 in FIG. 1 and the Fibers associated with projecting rings 236a and 236b are on the lower surface of the foam feeder or of the strip 81 in FIG. Such reinforcing filaments or yarns are particularly advantageous when a foam strip with relatively large dimensions is bent over a curved surface, since when bending the outer surfaces are exposed to significant tensile forces are. After the insulation has been made, the elongated reinforcing means are advantageous if the Insulation is exposed to stresses due to temperature differences between the inner and the outer Areas of insulation are effected.

Fig. 11 shows a schematic representation in a cross section through the foam and the heating elements in

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the arrangement of the heating elements 233, 234 »235 and 235a essentially along the line 11-11 in FIG of the reinforcement device 230 according to FIG. 9 relative to a foam section, such as the Foam section 221d. Corresponding parts of the foam 233a, 234a, 235b and 235c are shown in FIG Heat of the heating elements shown collapsed or melted state.

FIG. 12 schematically shows the attachment of a foam source, such as the foam source 78, for example 1 on the peripheral platform 74. The foam source 78 preferably comprises a combination of devices as shown in FIGS. 4, 5, 6, 7, 8, 9, and 11 are shown. The device 78 is expediently attached in such a way that it is by means of a Swivel connection 251, such as a Kugelgelerik, a universal universal joint or any other known joint of such a type is pivotable about a solid angle. The joint 251 is preferably on a stand 252 with an adjustable Height, for example in the form of a hydraulic cylinder, an adjustable frame, a pinion and rack and pinion device or some other mechanical equivalent. The height-adjustable device or the height-adjustable stand 252 is slidable in the supporting Perimeter platform carried so that this adjustable stand 252 around the perimeter by means of the Support means 253 can be positioned.

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13 shows a schematic representation of a plan view on the circumferential platfprm 74 according to FIG. 1 which can be seen a circular guide device or guide track 255, which is the support element or the support device 253 according to FIG. 12 receives and guides. The welding or connecting head 200 according to FIG. 8 with the reinforcement device according to FIGS. 9, 10 and 11 or without this device, the worn as shown in Figures 12 and 13 provides a preformed continuous foamed strip to the application head 82 according to FIG. 1, when a frame ■ such as the arcuate support frame 61 around the Tank 41 rotates and helically applies insulation to the tank in a location near the top Part 42 of the tank allowed. The remaining parts of the insulation can either foam through into place can be applied or alternatively in prefabricated Sections are made which are then installed in place.

14 is a partial view of the device shown in Fig. 1, the relative position to each other of the arcuate support frame 61, the surface the tank 44, the application head 82, the insulation 83 according to FIG. 1, the carriage 158 according to FIG. 4 and the device 84 for applying the vapor protection cover according to FIG. 1 shows.

FIGS. 15 and 16 show, in a schematic representation, two approaches to a device which is in operation 84 according to FIGS. 1 and 14 for applying the vapor protection

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cover showing the sequence of elements forming a vapor barrier on the surface of the Prepare insulation 83 at a rate approximately equal to the rate of deposition the foam insulation is. 15 and 16 provides a source or supply 260 a continuous strip of thin deformable, as protection against Steam usable material, such as a metal or plastic film with an adhesive or adhesive layer is provided. A film strip 261 is pulled off the material supply 260 and Forming rolls 262, 263, 264, 265, 266 and 267 are fed. The roles are arranged in three pairs. The rollers 262 and 263 form the first pair, the rollers 264 and 265 the second pair and the rollers 266 and 267 the third pair. The first and third pairs of rollers serve as holding rollers or clamping rollers or friction rollers, while rollers 264 and 265 are each built into a frame that is relatively is slidable to the first and third pairs of rollers, whereby the deformable strip is adjacent to one of its Edges can be stretched to take the tape out of its flat or cylindrical shape to a sufficient extent to distort so that its shape is adapted to a curved surface on which it is bent in two directions is applied. As can be seen from Figure 1, the amount of stretch required is on the cylindrical Edge of the tank is zero and increases when the vapor barrier applicator 84 approaches the upper part 42 of the tank 41. The properly stretched or

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unstretched film 261a is fed to a flange forming unit 270, which preferably has a shoe 27I and a Guide 272 comprises, wherein the shoe is arranged in a recess of the guide. The shoe 27I and the Guide 272 together enclose a space 273. This space changes in shape from a flat one Slit at A to a U-shaped shape at B. The deformable strip 261a is then transformed into an U-shaped Form 261b brought. The U-shaped structure then comes into engagement with idler rollers 274 and 275, which are attached to the Attack the web of the U-shaped structure and with first and second idle rollers acting on the flanks 276 and 277. The rollers 274 and 275 and the roller pairs 276 and 277 serve to the U-shaped strip 261b to lead and in a desired position at a distance from the molding shoe 271 and substantially adjacent to bring the foam insulation 278. A heater 279 is positioned adjacent the foam insulation. the Heater 279 is used to provide foam insulation and a thermoplastic heat seal layer on the 'strip 261b, which is located adjacent to the foam. On one designated by the reference numeral 261c Place the substantially U-shaped strip 261b in adhesive bond with the foam insulation 268 brought. The strip 261b has a first flank or a first leg 281 and a second or lower leg 282. The leg 282 is in close contact with a leg 281a of the preceding applied vapor protection strip and comes in engagement with heat regulating rollers 283 and 284, which are the thermoplastic coatings

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connect on the legs 282 and 281. A leg wrapping shoe 286 is adjacent the heat seal rollers 283 and 284 and located away from the molding shoe 271. The device or the shoe 286 for Rolling around the legs or that formed from the legs The flange has a first or inlet end and a second or outlet end 288. The shoe 286 is a gently rounded channel with a substantially larger curvature at inlet end 287 than at outlet end 288. Adjacent the outlet end 288 is an idler roller which engages a rolled edge 292, coming out of the mold or shoe 286. A device or a shoe 294 for Folding the flange is adjacent to roller 291 and away from the device or shoe 286 for Rolls of the flange arranged. The flange folder 294 has an entrance end 295 and an exit end 296 on. The folding or forming device 294 serves to fold the double flange and the rolled edge 292, to form a seam 297. Adjacent the outlet end 296 of the folder 294 is an idler roller 298 is provided, which for further positioning of the vapor protection application device 84 in its desired Location serves.

Fig. 15A shows in a schematic representation the Storage of the rollers 264 and 265, in a view along the line I5A-I5A in Fig. I5. Roles 264 and 265 are essentially parallel and rotatable in a frame. The frame 301 is operationally engaged with a swivel connection or a bearing 302,

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this bearing 302 on the vapor barrier applicator 84 is attached. An actuating or positioning device causing a linear displacement 304 is pivotally attached to the frame 301 at a location remote from the pivot bearing 302. At its end remote from the frame 301 is the. actuator producing a linear displacement 304 also attached to the frame of the Dampfschutzauf application device 84.

In this way, the angle of the axes of rollers 265 and 264 can be easily changed from its to the rollers 262, 263, 266 and 267 parallel position can be pivoted to a substantial deviation, which is sufficient is to stretch the strip 261 as desired. For purposes of illustration, the strip is shown as a flat strip. However, for many purposes it may be desirable to use a to use corrugated strips in which the corrugations are relatively small and have a length, .die about 10 to 50 times the thickness of the strip and wherein the height of the corrugation is about the thickness of the Stripe corresponds.

In FIG. 15B, a cross section through the strip 261b along the line 15B-15B in FIG. 15 is shown.

Figure 15C shows a section through strip 261b the line 15C-15C in Figure 15 and shows the shape of the flange after heat sealing to an adjacent similar strip and after passing through the Flange rewinding device 286.

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15D shows a section through the strip 261b along the line 15D-15D in FIGS. 15 and 16 and the flange 282 after deformation by means of the flange folding device 294.

17 and 18 there is shown an alternative embodiment of the head for applying the insulation and indicated generally by the reference numeral 320. This alternative head for applying the insulation or Foam forming head 320 is particularly suitable for the distribution or Application of plastic compounds foamed in place, such as foamed in place Polyurethanes, epoxy resins, phenolic foams and the like. Suitable. The head 320 includes one Frame 321. On one side of this frame 321 is a fastening and positioning device or a Pin 323 arranged. The positioning device 323 is pivotably articulated on a support arm 324, the the support arm 114 in the embodiment according to FIGS. and 3 corresponds. An actuating device 325 which brings about a linear displacement is pivotable hinged to the pin 323 and corresponds completely to the lateral positioning device 116 in the embodiment according to FIGS. 2 and 3. A guide roller assembly 326 is attached to the arm 324 and corresponds entirely to the guide roller assembly 145 in FIGS. 2 and 3. The Frame 321 carries a set of side rollers 328, 329 and 331 rotatably attached thereto. and 331 are spaced substantially parallel to each other with the axes being substantially lie in one plane. A single-sided belt

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mm J I mm

leads around reels 328, 329 and 331. Bin second Set of forming rollers 335 and 336 is rotatably attached to the frame 321. The rollers 335 and 336 are substantially at right angles to rollers 328, 329 and 331 and an upper one, respectively Cover-forming tape 338 is passed around these rollers 33 and 336. The straps 333 and 338 form two sides of a canal. The drive rollers 331 and 336 are in driving engagement with a drive motor 341 via a reduction gear 342. The output shaft 343 of the reduction gear 342 is in connection with a drive transmission device or a gear set 345, its output shaft a right angle with the drive shaft driven by the reduction gear includes and drives the roller 331 and the output shaft 343 of the reduction gearbox is also with a transmission device or a chain wheel 346, which in turn is a second chain wheel 347 which is in operative engagement with roller 336. Substantially adjacent to the roll 338 and at a distance from the roller 331 is an idle roller or guide roller 348 which is intended to be a permeable strip of fabric such as a light, coarsely woven linen or cotton fabric from a fabric strip supply spool to receive, with this supply reel on the frame 321 substantially adjacent to the reduction gear 342 is supported. A mixer assembly 353, the also referred to simply as a mixer in the following, is arranged essentially adjacent to the guide roller 348

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and set up to use suitable foam material Production of a foamable, curable material to receive or to receive, which in turn by a manifold 354 is ejected which ejects the foamable, curable material into one location, which lies substantially between the distal ends or edges of the bands 333 and 338. The head 320 for Application of the insulation is depicted in engagement with a tank wall 356 on which a layer of a fibrous insulation 357 is arranged, which can be, for example, a glass fiber wadding. A first inner one Strip of fabric 358 is between the latter insulation 357 and a hardened foam 359, the was discharged through the discharge pipe 354. A similar foam body 359a is immediately arranged adjacent to the body 359. In this way, the fabric strip 358, the foam body 359a, the belts 333 and 338 form a rectangular channel into which the foamable, hardenable material is expelled. Advantageously, adjacent to the belt 333, there is a vapor protection cover 361 between placed on the strap and foam 359 and becomes adherent to it as it cures and sets brought the foam body. Advantageously, a top or cover strip 362 is placed between the straps 338 and the foam 359 out, whereby an advantageous reinforcement of the insulating layer is achieved. Of the Top strip 362 is preferably taken from the strip supply roll 351 shown in Fig. 18 is supplied and passed over the cloth guide roller 348 and 348 then onto the surface of belt 338.

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A folding device 364 for folding the is advantageously between the roller 335 and the roller 348 Edge of the fabric arranged, which is arranged to the edge of the fabric, such as the strip of fabric 358 and fold it into a desired shape.

.Fig. I7A shows a shape that is located at 365 in Fig. 17 is desired. Fig. 17A is an enlarged one Excerpt from a representation of a foam strip 359a on which an upper strip of fabric 362a and a side panel 358a are disposed. Substantially adjacent to the top portion of the Strip of cloth 358a, a releasable film strip or layer 367 is provided between the upper surface 362b of the fabric strip 362a and a folded over portion 358b of the fabric strip 358a is. Such a film or coating preferably exists made of polyethylene, polytetrafluoroethylene, a hydrocarbon wax or a similar material, which does not easily adhere to the fabric strip or foam.

An alternate arrangement is shown in Figure 17B in which a top panel 362b, a side panel 358c and a film insert 368 which overlaps the top strip of fabric 362b and prevents adjacent Gluing together portions of the foam body in this area is shown. The two arrangements 17A and 17B provide stress relief when the surface of the foam insulation is adjacent the temperature of the tank wall 356 is below the temperature

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of the outermost part of the foam adjacent to the vapor barrier cover 361 is lowered.

19 schematically shows a type of stress relief, which is suitable for use with preformed foam strips. In Fig. 19 is a preformed applied foam strip 370 is shown having an outer surface 371, an inner surface 372 and a upper surface portion 373 has. An adjacent or upper foam strip 375 has an outer one Surface 376 and an inner surface 377 and a lower surface 378. The lower surface of the strip 375 has a protruding part 379, while the lower strip 370 has a protruding part 374. The protruding portion 379 of the upper strip engages the upper surface 373 of the lower Strip 370 in a layer substantially adjacent the outer surface of strips 370 and 375, the two foam strips at their junction are welded together or otherwise connected. A gap or unwelded area 381 is formed between these two strips 370 and 375 in an area which is substantially adjacent the inner surfaces 372 and 377.

In this way, when the interior surfaces 377 and 372 have and tend to be cooled to low temperatures to contract, the forces that appear on the welded parts of the foam are such Directions that resulting cracks tend to be in directions more or less parallel to the surfaces

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371f 376, 372 and 377 spread out as perpendicular to it. Appropriate pre-formed foam strips with protrusions or protruding surfaces, which are formed in the correct position, can by means of a any foam molding technique, such as cutting with hot wires, sawing, milling or the like. be shaped ".

In FIG. 20, a partial view according to an embodiment of the invention is shown schematically and generally with the reference numeral 390 denotes. The embodiment 390 includes a wall 391 with an insulated surface 392, wherein a first body of porous, fibrous insulation 393 is arranged on the surface 392 of the wall 391 is. A second body 394 of fibrous insulation is on the face at a distance from the body 393 arranged. The insulating bodies 393 and 394 form a spacing or space 395 between them. A first strip 397 of thermoplastic plastics material is substantially adjacent to the insulating layer 393 located and remote from surface 392. A second strip 398 is adjacent to the strip arranged. The strips 398 and 397 are internally sealed or heat welded 399 together tied together. The heat weld 399 is essentially disposed adjacent an outer surface 401 of the insulation formed from strips 397 and 398 and removed from face 392 of wall 391. Removed from the outer surface 401 of the insulation and adjacent of surface 392, a stress relief slot 402 is formed between insulating strips 397 and 398. In his of the fibrous insulation 393 and

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In a remote area, the slot 402 ends in a Cavity or recess 404 with a lcollar or oval or circular cross-section. Fibrous reinforcement elements 406 are shown embedded in insulating strips 397 and 398. A metallic vapor protection element 408 is shown disposed on surface 401 of insulating members 397 and 398.

The embodiment shown in FIG. is particular suitable for cooling containers that work at relatively low temperatures. The distance 395, the formed between the fibrous insulating members 393 and 394 provides a convenient path for evacuation of gaseous material which could escape through the wall 391 and the slot 402 with it its bulbous end 404 provides substantial stress relief when there is a substantial temperature gradient which occurs when the temperature of the wall 391 is substantially below the ambient temperature is lowered.

FIG. 21 schematically shows a detail of a section through a section designated generally by the reference numeral 410 isolated container is shown having a container wall 411 with an outer or isolated surface 412 having. A compressible fibrous batting 413 is disposed adjacent surface 412. The fibrous wadding can preferably consist of glass fibers or of inorganic or organic fibers. The cotton wool 413 possesses an outer surface 414 remote from wall 411. A reinforcing fabric or strip of fabric 415 is substantially in contact with surface 414

209882/0 829 BAD ORIGINAL

arranged. Foamed-in-place insulation is disposed and comprised adjacent to the fabric strip 415 a first or lower strip 418 and a second or upper strip 419, these strips 418 and 419 represent strips of foamable material in place, which are produced by a foam applicator, such as the device shown in Figures 17 and 18 was applied. A second reinforcing fabric strip 421 is essentially in the central area of the insulation 417 and is substantially parallel to the first strip of fabric 415. non-stick film strip 423 is disposed between the first fabric 415 and the second fabric 421 in a position which is the connecting surface of the insulating strips 418 and 419. A third resp. outer tissue 424 is substantially parallel to the first tissue 415 on an outer surface 426 of the cellular Isolation 417 arranged. A fourth or side fabric 427 extends from the first fabric 415 the second fabric 424 and is embedded in the foam material, while this is, for example, through the in the 17 and 18 shown device is applied. A strand, - or roving or yarn-like reinforcement 429 is arranged in the insulation 417 in desired arrangements.

22 shows another embodiment of a stress relief slot, which is indicated generally by the reference numeral 435. The slot 435 is between the first Insulating strip 436 and the second insulating strip 437 are formed. The strips 436 and 437 form one

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outer surface 438 and an inner surface 439 »The slot 435 extends from the inner surface 439 inward towards surface 438 and ends substantially midway between surfaces 438 and 439 in a substantially arcuate inwardly concave end 435a.

The embodiment shown in FIG _o 22 is particularly advantageously applicable in cases where extreme temperature changes are desirable and it is desirable that at all extend cracks against the inner surface 439 and are not parallel to the surface 439 or the outer surface of the 438th

23 shows a further alternative embodiment a connection between adjacent thermoplastic strips 441 and 442, indicated generally by the reference numeral 440 is designated. A tissue reinforcement

443 in the form of a folded strip with end edges

444 and 445 is adjacent to outer surface 446 the connection 440 is provided. The fabric strip 443 forms an inner bead 448. The inner bead 448 is located in slot 449 and has a shape substantially similar to that of slot 402 in FIG Fig. 20 is. The fabric reinforcement 443 and its bead-shaped Endings 448 significantly reduce the tendency for cracks to crack toward the outer surface spread.

FIG. 24 shows a further embodiment, generally designated 450, of a connection * which essentially

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'is similar to the arrangement 440 of FIG. The connection 450 according to FIG. 24 differs from that according to FIG. 23 in that the fabric reinforcement 451 a first strip 452 and a second strip 453 extending from the outer surface 454 to extend inside into a slot 455 of a substantially similar shape as the slot 402 according to FIG. The sections 452 and 453 of the reinforcement, which are formed in an end section 456 with a bulbous or bulbous shape. oval cross-section are glued to opposite inner surfaces of the end 456 of the slot 455 or with these surfaces in an adhesive connection and form an effective resistance against it, that cracks form on the reinforced surface.

Fig. 25 shows schematically one way of connecting a pre-expanded, molded cover cap 460 to an insulation 461 which is spiral-shaped was generated on a tank 463. A ring 464 is attached to the tank 463 by means of a number of pins or rivets 465. The ring 464 is in turn connected to a crimped ring 466 by rivets, which a flange 467 arranged substantially in the diameter directions and a substantially perpendicular one Has flange 468. The connected rings 464 and 466 form a firm closure of the foamed in place Insulation. The cap 460 ends in a protective ring 470, which is essentially opposite the ring 466 is arranged. The rings 466 and 470 are advantageously made of materials of low thermal conductivity, such as glass fiber reinforced plastics, the plastics being for example polyester

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and epoxy resins. Rings 466 and 470 are by means of a ribbon 472-connected, which is advantageously secured in place by soaking glass fibers with suitable hardening plastics such as epoxy resins. The connection is then covered with an annular layer of plastic foam insulation, denoted by the reference number 474, and preferably in the same manner as the plastic foam insulation foamed into place 461 is produced.

Referring now to FIG. 26, an alternate tank insulation layer is shown and generally designated by the reference numeral 480. The insulating layer 480 comprises a number of loops or turns of foamed plastic material, which are designated by the reference numerals 481, 481a and 481b. Each of the turns or loops 481 is of substantially rectangular elongate shape and has a pair of elongated slots formed therein, 482 and 483, which extend in the longitudinal direction in the insulating loop or convolution and adjacent a surface 484, which is intended on an area to be insulated, in a location on an opposite or distal surface 485. Slots 482 and 483 are spaced up to a quarter of the height of a strip from the planes of connection between strips 481 and 481b arranged and extend substantially parallel to this connection surface. The strip 481 further includes a number of transversely extending slots 486 which are substantially

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perpendicular to the slots 482 and 483 and extending over the entire thickness or height of the strip 481 extend. The foam strip 481 is in an adhesive Connect to strips 481a and 481b as previously described. A thread-like one Reinforcement or a fabric 487 is arranged on the surface 485. The fabric 487 extends over the Edges of the foam strip 48I, and the surface 485 of the foam strip 481 and extends between strips 48I and 481a and also between the strips 481 and 481b at locations adjacent to surface 485 and remote from surface 484. Neighbors Sections of the fabric are glued together without a glue the strips 48I, 481a and so on directly together, creating an additional slit between the Strip is formed. When a series of strips such as strips 481, 481a and 481b are applied, the reinforcing fabrics reinforce the connection between adjacent strips as well as the outer surface of the same and create a form of crack limitation which is particularly strong at the junctures between adjacent ones Stripes or turns. An insulating layer 488 is disposed over the fabric 487. This insulating layer can also consist of plastic foam, and in adhesive Connection with the tissue. A protective or metal layer 489 is on the insulating layer 488 located away from surface 485. Both layers 488 and 489 become simultaneously with the strip 481 applied and welded or glued to the previously applied material or in another adhesive Connected.

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The embodiment according to the invention shown in FIG. 26 can be used particularly advantageously when extreme Temperature differences between the inner surface of the insulation adjacent to a container and the outer surface, such as the outer layer or the protective coating 48 9 occur. By having slots like slots 482, 483 and 486 and similar slots are provided in adjacent turns, the cracking of the Insulation due to thermal shrinkage is controlled in a predetermined way and is applied to other areas than the connection areas between adjacent turns of the insulation.

Although in Fig. 26 the slots with a 'finite width are shown, the foam is preferably provided with slits of relatively narrow width during manufacture. Sawing or slitting of synthetic plastic foam without the formation of kerfs is known. Further, although the shape of the slots is depicted as being substantially rectangular, other shapes can be used can be used if so desired.

Another alternative embodiment of the invention insulation according to the invention is shown schematically in FIG. 27 and designated generally by the reference numeral 490. the Insulation 490 is essentially similar to that in Fig. depicted and includes a number of insulating strips 491, 491a and 491b which are in adhesive bond with one another are brought. The strip 491 has first and second slots 492 and 493 which extend substantially into Extend longitudinally in the same and the slots

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482 and 483 in FIG. 26 correspond. Strip 491 has a first side 494 and a second side 495. The slots extend from surface 494 to a location adjacent surface 495. Surface 494 and corresponding surfaces on strips 491a and 491b have fabric 496 disposed thereon Often times, it can be beneficial to have the fabric 496 separated at locations where it _{communicates with slots 492 (} and 493 in surface 494. A reinforcing fabric 497, similar to fabric 487 in Figure 26, is on the surface 495, which is remote from surface 494. Fabric 497 is wrapped around strip 491b and extends into the interface between strips 491 and 491a, as previously described. Over fabric strip 497 and corresponding fabric strips is an insulating layer 498 arranged, such as a one-piece skinned polystyrene foam sheet and further spaced from the surface 495 a protective layer or a Protective cover 499. A number of reinforcing strips 501 are arranged in the connection points between the adjacent strips 491, 491a and 491b. The tapes 501 are preferably applied to the strips before they are applied, this application preferably being carried out at a location which essentially corresponds to the foam material source 78 and the strips, for example, a number of elongated filaments made of a thermoplastic plastic base material or a plastic matrix include heat sealing or otherwise to the underside of the strip prior to being fed to the application head

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get connected. For example, if the strip, such as the strip 491 a Polystyrene foam is used for the reinforcement strips 501 Contain filaments or yarns such as wire or fiberglass that have been previously coated with polystyrene and welded to the underside of the foam strip to provide reinforcement both for transporting the strip to the application head and for the finished insulation construction. The embodiment according to FIG. 27 creates a controlled one Deformity in the substantially equatorial area and reduces cracking in the meridional direction by means of the reinforcement fabric 496.

Using the present invention, insulation can be provided in various ways on a curved surface. A rigid insulation _s such as a plastic foam can be mounted substantially in contact with the wall of the container or alternatively be mounted with or without a loose fibrous cotton wool at a distance from this wall. If it is desired to use a thermosetting foam in place of thermoplastic foam, suitable adhesives, such as epoxy plastics, can easily replace the heat welding to bond the insulation into a one-piece body. The insulation can be provided with a skin, that is to say with a reinforcement such as, for example, a fabric on the inner and / or the outer surface. Similarly, a fabric may be placed in the junction between adjacent turns of the insulating material, with preformed slots or regions

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low adhesion can be provided to control cracking under tension. Suitable reinforcement elements can be in any desired arrangement either by heat welding or adhesive bonding be applied, or by being enclosed in a foamable, curable compound. on in this way the insulating layer can be given almost any desired characteristic.

In the manner according to the invention, cylindrical containers can also be insulated using a suitable arrangement of guide rails is used by, for example, a guide rail at the top of the container and be placed at the bottom of the container carrying a suitable straight support frame. To simplify the illustration, the control devices and control circuits are omitted. In most applications, simple limit switches can be used to obtain the desired positioning of the foam application head or the application device for the vapor protection cover.

In certain cases, when using preformed foam strips, it may be desirable to use the welding device, such as the welding device shown in Fig. 8 in a modified form, by providing vertical movement of the weld plate, such as weld plate 215, in order to create a connection which essentially has the shape of the connection according to FIG. 19, thereby creating a better flexibility of the strip

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can be when the diameter of the loops or turns decreases, and thereby also a stress equalization space is created which extends substantially vertically at the junction.

In this way, the individual case may vary according to the requirements in the isolation of a container, the isolation from the bottom to the top _t of the upper part downwards, or be applied in any desired or convenient manner, wherein the foam insulation almost any desired configuration with or without reinforcement and can have with or without stress relief.

f>

Claims (33)

Claims , 1., Insulated cooling container, characterized in that it has at least one refrigerated goods receptacle (41) having an outer curved surface (44), adjacent to which one layer of insulation (33) is arranged covering at least a substantial part thereof, the insulation being in the form of a plurality of Loops or turns of a strip-shaped structure (83) is formed and adjacent turns of the insulation in an adhesive bond with one another stand. 2. Container according to claim 1, characterized in that the insulation comprises a cellular plastic foam. 3. Container according to claim 1 or 2, characterized in that that it comprises a plurality of loops or turns of vapor barrier material (261) which the Cover turns of insulation (83). 4. Container according to one of claims 1 to 3, characterized in that that the adjacent turns have a plurality of spirally arranged slots (381; 4O2; ' 435 5 449} 455Ϊ 482, 483, 486J 492, 493) that in the side of the insulation facing the outer curved surface (44) of the refrigerated goods receptacle (41) are trained. 5. Container according to one of claims 1 to 4, characterized in that that the turns of the strip-shaped 209882/0829 Formation (83) comprise a foamed plastic and adjacent turns of insulation in its the area remote from the refrigerated goods receptacle (41) are brought into adhesive connection with one another and directly adjacent to the refrigerated goods receptacle (41) sections of the windings are not connected and that the vapor protection cover in the form of a spiral Applied metal strip (261) is formed, with adjacent edges (281, 282) of adjacent Windings of the metal strips (261) are in adhesive connection with one another and a mechanical Compound (292). 6. A method for producing the insulation of a cooling container according to any one of claims 1 to 5, characterized characterized in that a thermally insulating material around the perimeter of the curved surface Chilled goods receptacle one after the other in the form of a A plurality of closed turns is applied to in this way "at least a part of the refrigerated goods receptacle enclose in an insulating envelope. 7. The method according to claim 6, characterized in that adjacent turns are connected to one another. 8. The method according to claim 6 or 7, characterized in that the thermally insulating material is a synthetic resin foam, a plastic foam, a thermoplastic foam or a thermosetting foam. 209887/0829 9. The method according to any one of claims 6 to 8, characterized
characterized in that on the outward-facing
Surface, of the thermally insulating material
A plurality of closed turns of a vapor barrier material is applied. 10. The method according to claim 8, characterized in that
that at least one substantially thread-like reinforcing element is included in the plastic foam. 11. The method .according to one of claims 6 to 10, characterized
characterized in that an area of low adhesion is formed between adjacent strips in an area adjacent to the refrigerated goods receptacle. 12. The method according to claim 11, characterized in that the area of low adhesion due to the inclusion of a releasable film adjacent the refrigerated goods receptacle and is formed between adjacent turns of the thermally insulating material. 13. The method according to any one of claims 6 to 12, characterized
characterized in that the thermally insulating material is in the form of a compound foamable in place
or a preformed plastic foam strip is applied. 14. The method according to claim 13, characterized in that the preformed plastic strip made of polystyrene foam consists. 209882/0829 15. The method according to claim 13 or 14, characterized in that that the preformed plastic strip is produced by a plurality of short Strips are connected at their ends. 16. The method according to claim 9 »characterized in that that the vapor barrier material is a strip-shaped includes smooth or corrugated metal foil. 17. The method according to claim 16, characterized in that that the metal foil on its side facing the insulation with a heat-activated Glue is provided " 18. The method according to claim 16 or 17, characterized in that the edges of adjacent turns of the strip-shaped metal foil jointly mechanically be folded over to bring them into a mechanical connection, 19. The method according to claim 17 _S, characterized in that di- streiraniform metal foil is glued to the insulation by applying heat. 20 «Method according to claim I7 _t . characterized by the fact that the application of heat. adjacent edge sections of adjacent j applied strip-shaped metal foils are glued witheiK & naer. 21. Device for performing the method according to a of claims 6 to 20, characterized by a support frame (61) from a drive device (65) around the circumference of the refrigerated goods receptacle (41) to be insulated is movable and an insulation application device (82; 11Cj 320) which is movable in adjustable direction and speed relative to the support frame and which is set up to move in a substantially spiral-shaped movement path over the to move insulating refrigerated goods receptacle (41). 22. The device according to claim 21, characterized by a pivot bearing (69) which interacts with the support frame (61) and is arranged remotely from the drive device (65). 23. The apparatus of claim 21 or 22, characterized in that the insulation-applying device a Device (82J 110; 320) for applying plastic foam includes. 24. Device according to one of claims 21 to 23, characterized characterized in that an insulation welding device (150) is provided by the insulation application device (82; 110; 320) is carried, this insulation welding device (150) works with the action of heat and is so arranged is that it welds adjacent turns or loops of the thermally insulating material together or glued. 25. Device according to one of claims 21 to 24, characterized characterized in that it has a cover application device (84) for applying a vapor protection cover 209882/0829 materials (261) on the insulation (83) applied by the insulation applicator (82J 110} 320) includes. 26. Device according to one of claims 21 to 25, characterized in that the insulation application device (82J 110) receiving means (119 {120, 121, 123, 124, 137, 138) comprises a thermally insulating material in the form of a preformed plastic foam strip (141) and weld it to an adjacent, previously applied plastic foam strip (I42a) or to glue. 27. The device according to claim 25, characterized by a cover welding device (279), around the vapor protection cover material (261) to be welded by the action of heat on the thermally insulating material (83) or to glue. 28. Apparatus according to claim 25 or 27, characterized in that the cover application device (84) a vapor protection cover material in the form of a strip (261, 261b) on the surface is set up for this purpose to apply the applied thermally insulating material (83), and that a connecting device (279, · 283, 284, 286, 294) for joining together adjacent edges (28I, 282) of the applied vapor protection cover strip (261, 261b) is provided. 29. The device according to claim 28, characterized in that the connecting device for interconnecting adjacent edges (28I, 282) of the vapor protection cover strip (261, 261b) a heat welding or adhesive 209882/0829 - 53 direction (279, 283, 284) included. 30. Device according to. Claim 23, characterized by Reinforcement devices (230) for supplying a yarn-like or filament-like reinforcement (245} 235, 235a, 234, 233aj 406} 429} 501) to the plastic foam strip (221dj 397, 398 j 417, 418} 49I) of by the insulation application device (82, HO, 320) onto the refrigerated goods receptacle to be insulated (41) is applied. 31. Device according to one of claims 21 to 30, characterized through a feeding device (.348, 351) for applying a perforated flat reinforcement material (358, 362} 415, 421, 424, 427} 443} 4515 485} 497) on the thermally insulating Material. 32. Apparatus according to claim 26, characterized by a display strip section connecting device (200) by means of the plurality of preformed plastic foam strip sections (221a, 221b) into one continuous plastic foam strips (141) connected which is then applied to the refrigerated goods receptacle (41) to be insulated. 33. Device according to one of claims 21 to 32, characterized in that reinforcing devices (230) in operative connection with the foam strip section connector (200) are provided around a yarn-like or filament-like reinforcement (245) on the interconnected plastic foam strips to apply end sections before these in turn on the refrigerated goods receptacle to be insulated (41) be applied. 209882/0829