DE10152385B4 - Large containers made of several, in each case wound into a roll, foil-wrapped insulating material webs of mineral wool, in particular glass wool - Google Patents

Abstract

The pack consists of several webs of foil-packed insulating material. Two layers each consisting of 12 insulation rolls packed in a foil cover. The individual rolls and the multiple ones are compressed into a module of joint rolls in a manner that products the fibers, so that for a height of pack of between 2.30 and 2.50 m, and thickness of web of 100 to 240 mm, the ration of insulation surface to standing surface is between 50:1 and 115:1.

Description

The invention relates to a bulk container according to the preamble of claim 1 and a method for producing such a large package.

Mineral wool insulation sheets are used in a variety of ways for thermal insulation purposes. A main field of application is the insulation of roofs, in particular the insulation of pitched roofs. For this purpose, the insulating material webs are fixed between the rafters, which are usually used for both the thermal insulation of new buildings as well as for the thermal insulation of old buildings in the course of renovations so-called Klemmfilze. When Klemmfilzen is insulating material webs, which are provided transversely to the longitudinal direction of the insulating material web with markings, so that according to the distance of the rafters to be introduced between the insulating material, a corresponding section of an insulation web using the transverse markers cut as cutting guides and then it is inserted with a press fit between the rafters.

It is obvious that in the insulation of roofs due to the large areas and a relatively large amount of insulation is required. The insulation webs for the clamping felt are usually kept in a width range of 1000 to 1250 mm, preferably 1200 mm, and may have thicknesses in the range of 60 to 240 mm and more. This insulating material webs are wound for transport and storage to insulation rolls and it is obvious that such insulation rolls with the aforementioned dimensions require a considerable amount of space. For transport and storage, more and more so-called large packages have been established here, which are formed from a number of insulation rolls packed in a film envelope. Such bulk containers are mainly composed of 18 Dämmstoffrollen which are arranged standing and packed in two layers of nine insulation rolls for bulk packaging. For each layer of the large package, three rows of juxtaposed modules, each consisting of three insulation rolls, are used, with the insulation rolls, which are each packaged under compression in a film envelope, also undergoing compression within the module. The bulk of two layers of insulating material rolls arranged one above the other is also packed in a film wrapping, often including the range on which the lower layer of insulation rolls of large containers is included in the film packaging.

Known bulk containers made of insulating material, which are not equipped for laying as a clamping felt include after, the EP 0 220 980 A1 a total of 24 rolls of insulation sheets with two layers each with twelve rolls. Here, each wound into a roll insulating sheet of mineral wool is wrapped by a film sleeve and there are three in series successively arranged roles packed with application of a second compression to a module in a film wrapper.

Furthermore, large containers are known from Klemmfilzen (Thermolan price list 9/95 Owens Corning from the year 1995), being packaged in these large packages only eighteen each wound from a roll insulation sheets that are equipped for transport on pallets.

The object of the invention is to reduce the space required for transport and storage of such bulk containers space, which leads in view of the required amounts of insulation material to very significant cost advantages. This task should be accomplished by simple measures without the suitability of the insulating material webs for thermal insulation is lost or impaired.

This object is achieved by the features contained in the characterizing part of claim 1, wherein expedient developments of the invention are characterized by the features contained in the dependent claims.

According to the invention is in a bulk package, which consists of several each wound into a roll, foil-wrapped insulating material webs, which are arranged in two layers one above the other and in any position in several parallel rows of several combined into a module roles, both the role as also the module compressed so gentle on the fiber that at a height of the large package between 2.30 m and 2.50 m, in particular 2.40 m, and a thickness of the insulating material in the range of 60 to 240 mm, the ratio of insulating surface to floor space of the large package is equal to 50: 1 to 115: 1. That is, both the roll and the rolls within a module are subjected to a correspondingly strong compression, which, however, is carried out so gently that the fiber structure is not impaired or destroyed despite the high compression. This is essential, because only then is it guaranteed that the insulating material web after removal of the film packaging for use on their Nominal thickness, ie initial thickness, springs back and thus enables the corresponding thermal insulation. Nevertheless, this treatment of the role as well as the module within the large package to a considerable space savings of about 23% compared to the conventional large package of 18 rolls, since the space requirement of the large package would require only 77% based on a conventional large container with 18 rolls. In addition, the invention allows optimum utilization of the usual pallets, with the dimensions of 1200 × 1200 mm, as flush a bulk container of two layers with 12 insulating rolls or three modules a four insulating rolls can be accommodated.

The fiber-sparing compression is composed of two compression processes. The first compression process takes place before the actual winding of the insulating material web. For this purpose, the insulating material web is expediently guided through a tapering gap between a precompression belt and a lower belt, the actual transport belt, where a gentler compression, in which no harmful shearing forces occur, in particular in the range from 1: 3 to 1: 6. A practicable preferred precompression value is in the range of 1: 3.5 to 1: 5.5. This Vorkomprimierung is very important because here, unlike compression during the winding process in consequence of the implementation of the insulating material by a gradually tapering gap between Vorkomprimierungsband and lower conveyor belt a very gentle compression or compression takes place, the high compression levels without damaging impairment of the fiber structure allows, so that a sufficient residue capacity of the fibers is ensured. The Vorkomprimierband expediently has an inclination between 5 ° and 10 ° and in particular 8 °. The shear forces which can not be completely suppressed are negligible with respect to the shear forces which occur during compression of the insulating material during the conventional winding process. This is followed by the second compression process, within a module formed from a plurality of insulating rolls, in particular four insulation rolls, wherein the rolls are arranged in a row one behind the other and compressed in the longitudinal direction of the module. In a practical embodiment, in the Vorkomprimierungsstufe before the winding device, a compression, which leads starting from an insulating material web with a density of 14 kg / m ³ to a density of 76 kg / m ³ , wherein in the second compression process within the module compression to a Density of 100 kg / m ³ , which corresponds to a compression of about 1: 7.9.

Conveniently, fibers of increased quality are used to form the large package by spinning the fibers using known spin baskets or centrifuges with a lower throughput compared to conventional practices per hole or opening of the centrifuge or the spin basket. Preferred perforations here are 0.7 to 1.1 kg glass melt / hole and day, preferably 0.9 kg / hole and day. Preferably, fibers having a mean fiber diameter of 3 to 4 .mu.m, preferably 3.5 .mu.m are produced, which are characterized by high quality or high restoring forces and allow increased compression without the risk of damaging the fiber structure.

Conveniently, the compression within the module of several Dämmstoffrollen 28 to 32% and preferably about 30%.

Regarding realized for the fiber-sparing compression ratio of insulating surface to floor space of the large container resulting depending on the thickness of the insulating material, the following conditions.

With a thickness of the insulation web of 100 mm and a thermal conductivity class 035 (the thermal conductivity class is determined here by DIN 18 165, Part 1), a ratio of insulating surface to footprint of about 112: 1 is preferred.

With a thickness of the insulation web of 120 mm and a thermal conductivity class 035, the ratio of insulating surface to standing surface is preferably about 96: 1.

With a thickness of the insulating material web of 140 mm and a thermal conductivity class 035 or 040, the preferred ratio of insulating surface to base area is approximately 80: 1 or 100: 1.

With a thickness of the insulation web of 160 mm and a thermal conductivity class 035 or 040, the preferred ratio of insulating surface to base area is approximately 70: 1 or 89: 1.

With a thickness of the insulation web of 180 mm and a thermal conductivity class 035 or 040, the ratio of insulating surface to standing surface is preferably about 64: 1 or 80: 1.

With a thickness of the insulation web of 200 mm and a thermal conductivity class 035 or 040, the ratio of insulating surface to standing surface is approximately 56: 1 or 70: 1.

With a thickness of the insulating web of 220 mm and a thermal conductivity class 035 or 040, the ratio of insulating surface to standing surface is preferably about 66: 1.

Overall, the measures according to the invention result in considerable cost advantages due to a correspondingly large reduction in the space requirement, namely by simple measures that can be carried out using the conventional methods for the production of large containers. For the same size of the large package according to the invention over the bulk container conventional design of 18 rolls results in the same transport volume significantly larger amounts of thermal insulation material, which can be processed. In a special way, the large package of 24 rolls with a thickness of insulation rolls of 400 mm for use on standard pallets with a size of 1200 × 1200 mm, since three modules can be accommodated flush out of four insulating rolls on the pallet. In two layers, this results in a large container with 24 insulating rolls.

Hereinafter, a preferred embodiment of the invention will be described with reference to the drawing. In it show in a purely schematic representation

1 A preferred embodiment of a large package of 24 insulating rolls,

2 a schematic side view of a device with a Vorkomprimierungsband and winding device for winding an insulating material web to a roll to illustrate a first stage of the process for forming the large package,

3 FIG. 2 is a schematic side view of part of a device for forming a module comprising a plurality of insulating material rolls to illustrate a second process step for producing the large package. FIG.

4 an end view of a module of four Dämmstoffrollen before and after the compression or film wrapping and

5 a perspective view of a module of four Dämmstoffrollen.

1 shows a large container for transport and storage of several insulating rolls, in which a total of 24 insulation rolls are packed into a large package. The generally with 1 designated large package is here of two superimposed layers 2 and 3 formed, being in every position 2 . 3 each 12 insulating rolls are packed. With 4 designated insulation rolls are arranged standing in every position and every situation 2 . 3 is made up of three modules arranged side by side 5a to 5c formed in each module four Dämmstoffrollen are arranged in a rectilinear row.

The summarized to a module and in a straight line juxtaposed insulation rolls are, as is clear 5 emerges through a foil wrapping 6 to the module 5 packed. The foil cladding 6 covered in the embodiment according to 5 the exposed outer surface of the insulation rolls 4 , however, leaves the front sides of the insulation rolls free. If required, however, a closed film wrapping can also be used. The foil cladding 6 to 5 is shown here only schematically, because in practice it is desirable that the film wrapping also extends over a part of the end face when using a shrink film, so that the film wrapping 6 a bit longer than the one in 5 With 1 designated length of insulation rolls 4 is and thus protrudes on both sides of the successively arranged Dämmstoffrollen, so that during the shrinking process, the protruding portions of the film slightly pull over the end faces of the insulating rolls.

The two layers arranged one above the other 2 . 3 each made of four in three rows, each with four Dämmstoffrollen formed large container is in turn with a 1 schematically apparent film wrapping 7 surrounded in the form of a Stretchfolienumhüllung, which envelops the side surfaces of the large container in the illustrated embodiment, which are formed here by the height of the large package of two superposed Dämmstoffrollen. Again, a closed enclosure is selected in practice by z. B. from above a cover sheet of plastic is placed on the bulk container, the falling down edge then by means of the stretch film - as well as the other outer surfaces of the large package - is wrapped.

When arranging the large container 1 on a pallet, in particular a German standard pallet with dimensions of 1200 mm × 1200 mm, the film sleeve 7 also about the in 1 not shown drawn pallet, so that the pallet is included in the packaging of the large package.

The following are the individual steps for forming the in 1 described large package of 24 insulation rolls described which can be accommodated flush on a standard pallet with dimensions of 1200 × 1200 mm.

The height of the large package of two layers of insulating dunnage rolls arranged one above the other is preferably between 2.30 m and 2.50 m, measured without a pallet, which corresponds to a width of the insulation web or a height of each insulating roll of 1.15 m to 1, 25 m corresponds. As is known, such insulating material webs are produced in a preferred width of 1.20 m, which are predetermined due to production.

According to 2 will be on a subband 8th transported insulation web 9 before the winding device subjected to a first compression and indeed in that the insulating material web 9 between the narrowing gap between an upper precompression belt 10 and the subband 8th to be led. As a result, the insulating material web brought up in a nominal thickness of d becomes 9 compressed to a reduced thickness d 'and then in this state as out 2 can be seen, wound, with 11 the so-called Ausdrückwalze and with 12 the wrapping arm formed by a conveyor belt 12 is designated. As can be seen, there is a substantial pre-compression of the insulating material web before the actual winding process, which is advantageously slippery and therefore gentle on the fibers. About the wrapping arm 12 , which rests from above on the insulating roll formed in the winding device, it is ensured that the winding process takes place under the compression generated by the Vorkomprimierband, so the compression is maintained in the winding. The insulation roll formed in the winding device is then packaged in a conventional manner in a shrink film, so that the compression is maintained. The degree of compression when precompressing the insulation web over the precompression belt 10 is in the range of 1: 3.5 to 1: 5.5, in particular in the range of 4.5 to 5.4, wherein in a practical embodiment, starting from a bulk density of the insulating material web before insertion into the gap between Vorkomprimierband 10 and subband 8th of 14 kg / m ³ a compression of the insulating tape to a density of 76 kg / m ³ is carried out. This results in a compression of 1: 5.4, wherein in practice a maximum degree of compression can be driven to about 6, so the insulating material can be vorkomprimiert to one sixth in thickness. The following table shows compression values of practicable embodiments of insulating material webs of the thermal conductivity group WLG 040 and WLG 035. Table product Length (mm) Thickness (mm) Roll diameter should (mm) compression Gap thickness end precompr. band (mm) WLG 040 6000 5000 4500 4000 3500 3300 3000 120 140 160 180 200 220 240 400 400 400 400 400 400 470 5.4 5.4 5.4 5.4 5.4 5.4 5.1 5.1 22 26 29 33 38 40 58 WLG 035 5600 4800 4000 3500 3200 2800 3300 3000 100 120 140 160 180 200 220 240 400 400 400 400 400 400 500 500 4.5 4.5 4.5 4.5 4.5 4.5 3.6 3.6 28 33 39 44 49 56 59 65

With a thus prepared and wrapped with a foil insulation roll 4 is then formed with further Dämmstoffrollen a module of four Dämmstoffrollen, which is based on 3 is explained.

3 shows a conventional stacking device for forming a module, wherein the vertically arranged stacking device 13 from above the wrapped in a foil insulation rolls 4 be supplied. For this purpose, the stacking device 13 two spaced-apart walls 14 on, which defines a gap between them for receiving a series of four successively arranged Dämmstoffrollen between them. The in the stacking device 13 between the opposite walls 14 taken four insulating rolls 4 be through a holding device 15 held. Under the holding device 15 there is a sheath device 16 , in turn, similar to the stacking device 13 from oppositely arranged walls 17 is formed. Above the sheath 16 become two slides from two opposite sides 18 fed by reels 19 be handled. These slides 18 be by a turn only schematically illustrated welding device 20 with each other before entering the gap between the walls 17 welded into a foil. Will the holding device 15 open, so get the four in the stacking device 13 superposed insulating rolls 4 taking along the welded foil from the two foils 18 between the walls 17 and are on the stamp 21 a hydraulic piston cylinder 22 on. After the four insulation rolls between the walls 17 are introduced, a pressing of the series of four superposed Dämmstoffrollen takes place 4 by raising the stamp 21 , being above the two walls 17 through the rollers of the welding device 20 a stop is formed, so that a compression of the four Dämmstoffrollen takes place in the module longitudinal direction. After compression occurs above the walls 17 a new welding of the two films 18 to the formation of the 5 apparent module. Within this module, the four insulating rolls are arranged under compression in the module longitudinal direction, wherein the films 18 are formed reinforced, ie with a thickness between 40 and 100 microns, preferably 70 microns

This compression results in particular 4 , wherein the upper view with a shows the length of the row of four successively arranged Dämmstoffrollen a module and indeed prior to compression within the sheath means 16 , The representation in 4 Below shows the four Dämmstoffrollen after compaction, in which the length of the module or the length of successively arranged Dämmstoffrollen now a '. This results in the compression also a certain ovalization of Dämmstoffrollen in the longitudinal compression, as is not difficult from the lower illustration of the 4 results. Overall, one obtains a module compression between 1: 7.5 and 1: 8.5, preferably 1: 7.9.

In a preferred embodiment, the insulation rolls are wound into 400 mm diameter rolls, which means that the length a of the series consists of four insulation rolls arranged one behind the other 4 before forming the module is 1600 mm. In the enclosure 16 then takes place the compression of the module in the module longitudinal direction to a length a 'of 1200 mm, so that three modules with four Dämmstoffrollen fit flush to a standard range of dimensions 1200 × 1200 mm.

In order to avoid destroying the fiber structure in relation to the bulk density of the products at such high degrees of compression and to ensure that after removal of the film packaging, the insulating roll rebounds to its nominal thickness, the fibers are produced with a special quality in a preferred embodiment of the invention. For this purpose, for the production of the fibers of the conventional rotating spin basket operated with a hole power of 0.7 to 1.1 kg / hole and day, preferably 0.9 kg / hole and day at an opening or hole diameter of <1 mm, d. H. between 0.5 mm and 1 mm, preferably 0.8 mm. The spin basket here has a diameter of 400 to 600 mm. This produces high-quality fibers that allow, despite the increased degrees of compression in the winding device and within the module training a springing of the insulating material webs after developing from the role and after removal of the film packaging to the nominal thickness of the insulating material. The spin basket also has a hole number of 27,000. However, these data of the spin basket are modifiable and serve only as an example. Essential is the hole performance, which is lowered compared to conventional manufacturing process. This results in glass wool fibers having a mean fiber diameter of 3 to 4, in particular 3.5 microns.

Overall, let the process described a large package of 24 insulating rolls on a standard range of 1200 × 1200 mm accommodate, being packed compared to a conventional bulk container with 18 insulating rolls and three insulating rolls to a module, so each layer three modules a three insulating rolls a space savings of advantageous about 77% results. This is a significant advantage, which has a cost effect due to the reduced space requirements for transport and storage.

Claims (13)

Bulk containers ( 1 ) of several each to a role ( 4 ), foil-wrapped insulation sheets of mineral wool, especially glass wool, in particular for the insulation of roofs, which are designed for installation as a clamping felt, such that they are held after insertion between the rafters by clamping fit and standing on a footing in preferably parallel rows from several roles as well as in two layers ( 2 . 3 ) are arranged one above the other, each row having the plurality of rollers ( 4 ) through a foil wrapper ( 6 ) in a compressed state to a module ( 5 ) and the superimposed layers ( 2 . 3 ) optionally with a pallet located below the first layer as a standing surface by means of a further film wrapping ( 7 ) to the large container ( 1 ), characterized in that both the single roll ( 4 ) as well as the multiple roles in a module ( 5 ) of the large package with a height between 2.30 m and 2.50 m, in particular 2.40 m and a thickness of the insulating material web from 60 mm to 240 mm when compressing the row of rollers in the module ( 5 ) are compressed in the longitudinal direction such that the ratio insulating surface m ² / standing surface m ^{2 of} the large package ( 1 ) is equal to about 50: 1 to about 115: 1, wherein the bulk container 24 Rolls of 12 rolls each in a position with two superimposed layers, and that the rollers ( 4 ) under increased compression by the around the module ( 5 ) applied film casing ( 6 ), whereby this compression of the row of rollers in the module ( 5 ) by 1/4 in the longitudinal direction to about 1/3 in the longitudinal direction of the roller row. Bulk containers ( 1 ) according to claim 1, characterized in that the compression is in the range of 28-32%, preferably about 30%. Bulk containers ( 1 ) according to claim 1 or 2, characterized in that for the insulating material web ( 9 ) Fibers of increased quality are used, in particular fibers which are produced by means of a rotating spin basket with a perforated capacity of 0.7-1.1 kg glass melt / hole and day, in particular 0.9 kg / hole and day. Bulk containers ( 1 ) according to claim 3, characterized in that the fibers are used with an average fiber diameter of 3-4 microns, in particular 3.5 microns. Bulk containers ( 1 ) according to one of the preceding claims, characterized in that per module ( 5 ) four rollers ( 4 ) are packed. Bulk containers ( 1 ) according to one of the preceding claims, characterized in that each three modules next to each other are placed flush on a standard pallet. Bulk containers ( 1 ) according to one of the preceding claims, characterized in that three modules of four rolls, each with a diameter of 400 mm on a standard pallet with 1200 × 1200 mm length to width are arranged per layer. Method for producing a large container ( 1 ) according to one of the preceding claims, in which several roles ( 4 ) made of compression-wound insulation webs ( 9 ) are wrapped in a foil and made into a module ( 5 ) and by a foil cover ( 6 ), several of these modules ( 5 ) are juxtaposed to form a layer on a standing surface and a further layer of a plurality of correspondingly juxtaposed modules ( 5 ) and these layers ( 2 . 3 ) optionally with a pallet as a standing surface through a further film envelope ( 7 ) are combined into large containers, characterized in that the formation of the module, the juxtaposed rollers ( 4 ) of the module ( 5 ) subjected to increased compression in the longitudinal direction by 1/4 to about 1/3 in the longitudinal direction and while maintaining the compression of the roller row with the film envelope ( 6 ) is sheathed. Method according to claim 8, characterized in that the insulating material webs ( 9 ) are subjected to pre-compression before the actual winding process. A method according to claim 9, characterized in that the insulating material webs are performed for precompression through a gap region with decreasing gap width. A method according to claim 10, characterized in that for the pre-compaction obliquely to the conveyor belt of the insulating material web ( 9 ) precompression band ( 10 ) is used, whose inclination is in a range of 5 ° to 10 °, in particular at 8 °. Method according to one of claims 9 to 11, characterized in that the degree of precompression at a WLG 035 3.5 to 5.0, in particular at thicknesses <200 mm 4.5 and at thicknesses> 200 mm 3.6 or at WLG 040 is 5 to 6, in particular 5.4 at thicknesses <220 mm and 4.1 at thicknesses around 240 mm. Bulk containers ( 1 ) according to one of claims 1 to 7, characterized in that the compression within the module is in the range of 7.5 to 8.5, preferably 7.9.

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