EP1321382B1 - Package comprising a plurality of plastic wrapped rolls of mineral wool insulation material - 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. Such Klemmfilze are known from DE 36 12 875 C 3. The insulating material is wound here in each case to form a roll. Along the measures provided for on the insulating material markings separating cuts are made, whereby in each case a section is separated from the insulation web whose length corresponds to the distance of the rafters. The severed section is rotated 90 ° and then laid between the rafters, where it is then held with a press fit. Such pinch felts have an increased binder content in the range of 6 to 7 wt .-% and are characterized by a higher rigidity .

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.
Corresponding large containers are known (cf., DE 40 05 541 A1) in which, in order to save packaging material, a number of plates or rolls are layered above or next to one another and the stack formed thereby is subjected to a compression process and wrapped with a film. The foil-wrapped modules of plates or rolls are stacked in layers, side by side, to form a transport unit, re-compressed and edged to maintain the compression of the transport unit.

The object of the invention is the necessary for transport and storage of such large containers To reduce space requirements, considering the required quantities Insulating material leads to very significant cost advantages. Here is this task be accomplished by simple measures without the suitability of the insulating material webs is lost or impaired for thermal insulation.

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

According to the invention is in a large package, which consists of several each consists of a roll wound, foil-wrapped insulation webs, in two layers one above the other and in any position in several parallel rows of several to einnem Module summarized roles are arranged, both the role as well as that 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 area from 60 to 240 mm the ratio of insulating surface to standing surface of the large container is equal to 50: 1 to 115: 1. That is, both the role and the roles within one Modules are subjected to a correspondingly strong compression, but so Carefully carried out that the fiber structure does not affect despite the high compression or destroyed. This is essential because only then is it guaranteed that the Insulation web after removal of the film package for use at its nominal thickness, So initial thickness, spring back and thus the appropriate thermal insulation allows. Nevertheless, this treatment leads to the role as well as the module within of the large package to a significant space savings of about 23% over the conventional Large container made of 18 rolls, as the space requirement of the large container based on a conventional 18-roll bulk container would only need 77%. In addition allows the invention optimum utilization of the usual pallets, with the dimensions of 1,200 x 1,200 mm, flush a large container made of two layers with 12 insulation rolls each or three modules a four Dämmstoffrollen 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 tapered 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, a compression on 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 used by the fibers using known spin baskets or centrifuges with a lower hole throughput per hole compared to conventional practices or opening of the centrifuge or the spin basket are thrown or pressed. Preferred perforation capacities here are 0.7 to 1.1 kg glass melt / hole and day, preferably 0.9 kg / hole and day. Preference is given to fibers having a mean fiber diameter from 3 to 4 microns, preferably 3.5 microns produced, characterized by high quality or high restoring forces and increased compression without the risk allow damage to the fiber structure.

In a particularly advantageous manner, the invention is applicable to insulation webs with a density in the range of 10-22 kg / m ³ , in particular 12-15 kg / m ³ , in currently practiced embodiments, very good results at a Rohdichtewert of 13, 5 and 14 kg / m ³ for mineral wool have shown. Even with increased compression no damage to the fiber structure was observed and there was a perfect return spring insulation webs to the original initial thickness after opening the large package and indeed after long residence times of the mineral wool within the package.

Conveniently, the compression within the module is made up of several insulating rolls 28 to 32%, preferably about 30%.

Regarding the ratio of insulation surface realized for the fiber-sparing compression to stand area of the large container arise depending on the thickness of the insulating material web following conditions.

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

With a thickness of the insulation sheet of 120 mm and a thermal conductivity class 035 preferably results in the ratio of insulating surface to floor space with about 96: 1.

With a thickness of the insulating material of 140 mm and a thermal conductivity class 035 or 040, the preferred ratio of insulation area to floor space is about 80: 1 or 100: 1.

With a thickness of the insulating material of 160 mm and a thermal conductivity class 035 or 040 is the preferred ratio of insulating surface to floor space about 70: 1 or 89: 1.

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

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

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

Overall, the measures according to the invention result in considerable cost advantages by a correspondingly large reduction in space requirements and by simple Measures with the conventional methods for the production of large containers can be executed. At the same size of the large package according to the invention over The large container conventional design of 18 roles result in the same Transport volume considerably larger amounts of thermal insulation material, which processes can be. In a special way, the large container from 24 rolls at a thickness of insulation rolls of 400 mm for use on standard pallets a size of 1200 x 1200 mm, since on the pallet three modules each consisting of four insulating rolls can be accommodated flush. In two layers, this results in a Large container with 24 insulating rolls.

Figur 1

eine bevorzugte Ausführungsform eines Großgebindes aus 24 Dämmstoffrollen,

Figur 2

eine schematische Seitenansicht einer Einrichtung mit einem Vorkomprimierungsband und Wickelvorrichtung zum Wickeln einer Dämmstoffbahn zu einer Rolle zur Verdeutlichung einer ersten Verfahrensstufe zur Bildung des Großgebindes,

Figur 3

eine schematische Seitenansicht eines Teils einer Vorrichtung zur Bildung eines Moduls aus mehreren Dämmstoffrollen zur Verdeutlichung einer zweiten Verfahrensstufe zur Herstellung des Großgebindes,

Figur 4

eine Stimansicht eines Moduls aus vier Dämmstoffrollen vor und nach der Komprimierung bzw. Folienumhüllung sowie

Figur 5

eine perspektivische Ansicht eines Moduls aus vier Dämmstoffrollen.

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

FIG. 1

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

FIG. 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,

FIG. 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.

FIG. 4

an end view of a module consisting of four insulating rolls before and after compression or foil wrapping as well

FIG. 5

a perspective view of a module of four Dämmstoffrollen.

FIG. 1 shows a bulk container for transporting and storing a plurality of insulating material rolls, in which a total of 24 insulating rolls are packed into a large package. The general 1 denoted large package is in this case of two superimposed layers 2 and 3, wherein in each layer 2.3 each 12 Dämmstoffrollen are packed. The designated 4 Dämmstoffrollen are arranged standing in any position and each layer 2,3 is made formed three adjacent modules 5a to 5c, wherein in each module four Dämmstoffrollen are arranged in a straight line.

The combined into a module and arranged in a straight line next to each other Dämmstoffrollen are, as clearly apparent from Figure 5, by a film wrapping 6 packed to module 5. The film wrapping 6 covers in the embodiment according to Figure 5, the exposed lateral surface of the Dämmstoffrollen 4, but leaves the end faces the insulation rolls free. If necessary, but also a closed film wrapping be used. The film envelope 6 according to FIG. 5 is only schematic here represented, because in practice, it is desirable that the film wrapping in use a shrink film also extends over part of the end face, so that the film wrapping 6 slightly longer than the designated in Figure 5 with 1 length of Dämmstoffrollen. 4 is and thus protrudes on both sides over the successively arranged Dämmstoffrollen, so that during the shrinking process, the protruding portions of the film are slightly Pull over the front sides of the insulation rolls.

This consists of two superimposed layers 2,3 of four each in three rows, respectively four bundles of insulating material formed large container is in turn with a from Figure 1 schematically apparent film wrapping 7 in the form of a Stretchfolienumhüllung surrounded, which in the illustrated embodiment, the side surfaces of the large container enveloped, which here by the height of the large package of two arranged one above the other Dämmstoffrollen are formed. Again, in practice, a closed enclosure chosen by z. B. from above a cover sheet of plastic on the bulk container is laid, the falling edge then by means of the stretch film - as well as the remaining outer surfaces of the large package - is wrapped.

When arranging the large container 1 on a pallet, in particular a German standard range with the dimensions 1200 mm x 1200 mm, the film cover 7 can also over the pallet, not shown in Figure 1 may be drawn, so that the pallet in the package of the large package is involved.

In the following, the individual steps for the formation of the large package shown in Figure 1 out of 24 insulation rolls, which are flush with a standard pallet The dimensions 1200 x 1200 mm can be accommodated.

The height of the large container from two layers of insulating rubber rolls arranged one above the other is preferably between 2.30 m and 2.50 m, measured without pallet, what a width of the insulation web or a height of each insulation roll from 1.15 m to 1.25 m. As is known, such insulating material webs in a preferred width of 1.20 m produced, which are predetermined due to production.

According to FIG. 2, the insulating material web 9 conveyed up on a lower belt 8 is subjected to a first compression in front of the winding device, specifically in that the insulating material web 9 is guided between the narrowing gap between an upper pre-compression belt 10 and the lower belt 8. As a result, the insulation web 9 brought up in a thickness of d is compressed to a reduced thickness d 'and then in this condition; as can be seen from Figure 2, wound, with 11, the so-called Ausdrückwalze and with 12 of the winding arm 12 formed by a conveyor belt 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 pre-compressing the insulating material web over the Vorkomprimierband 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 ago Introduced into the gap between Vorkomprimierband 10 and Subband 8 of 14 kg / m ^3, a compression of the insulating tape to a density of 76 kg / m ³ takes place. 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 insulation webs of the thermal conductivity group WLG 040 and WLG 035. product Length (mm) Thickness (mm) Roll diameter should (mm) compression Gap thickness end pre-compression strap (mm) WLG 040 6000 120 400 5.4 22 5000 140 400 5.4 26 4500 160 400 5.4 29 4000 180 400 5.4 33 3500 200 400 5.4 38 3300 220 400 5.4 40 3000 240 470 5.1 58 WLG035 5600 100 400 4.5 28 4800 120 400 4.5 33 4000 140 400 4.5 39 3500 160 400 4.5 44 3200 180 400 4.5 49 2800 200 400 4.5 56 3300 220 500 3.6 59 3000 240 500 3.6 65

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

Figure 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 are supplied. For this purpose, the stacking device 13 two at a distance mutually arranged walls 14, which between them a gap for receiving a Series of four successively arranged Dämmstoffrollen limited. The in the stacking device 13 received between the opposite walls 14 four Dämmstoffrollen 4 are held by a holding device 15. Under the holding device 15 is a sheath means 16, which in turn similar to the stacking device 13 from opposite arranged walls 17 is formed. Above the sheath device 16 two films 18 are fed from two opposite sides of the reels 19 be handled. These films 18 are represented by a turn only schematically Welding device 20 together before entering the gap between the walls 17 welded into a foil. If the holding device 15 is opened, the four arrive in the stacking device 13 superposed Dämmstoffrollen 4 under entrainment the welded film of the two films 18 between the walls 17 and lie on the punch 21 of a hydraulic piston cylinder 22. After the four insulation rolls are inserted between the walls 17, there is a pressing of the row of four superimposed insulating rolls 4 by raising the punch 21, wherein above the two walls 17 through the rollers of the welding device 20 a stop is formed, so that compressing the four insulating rolls in the module longitudinal direction takes place. After compression, a new welding takes place above the walls 17 the two films 18 for forming the apparent from Figure 5 module. Within this module, the four insulating rolls are arranged under compression in the module longitudinal direction, wherein the foils 18 are reinforced, d. H. with a thickness between 40 and 100 μm, preferably 70 μm

This compression results in particular from FIG. 4, wherein the upper illustration with a the length of the row of four successively arranged Dämmstoffrollen a module shows and prior to compression within the sheath means 16. The illustration in FIG 4 below shows the four insulation rolls after compaction, in which the length of the module or the length of the insulating rolls arranged one behind the other is now a '. This results in the compression also a certain ovalization of Dämmstoffrollen in the longitudinal compression, as can be easily seen from the lower illustration of FIG. 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 insulating rolls become rolls with a Diameter of 400 mm wound, which means that the length a of the series of four successively arranged Dämmstoffrollen 4 before the formation of the module is 1600 mm. In the casing device 16 then the compression of the module takes place in Mödullängsrichtung to a length a of 1200 mm, making three modules flush with four insulating rolls fit on a standard pallet measuring 1200 x 1200 mm.

In terms of the bulk density of products at such a high compression levels Destroy the fiber structure to avoid and ensure that after removing the fiber Foil wrapping the insulating material roll back up to its nominal thickness, are in In a preferred embodiment of the invention, the fibers are made of particular quality. For this purpose, for the production of the fibers of the conventional rotating spin basket a hole performance of 07, to 1.1 kg / hole and day operated, preferably 0.9 kg / hole and day with 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 from 400 to 600 mm. This produces high quality fibers, which despite the increased Compression degrees in the winding device and within the module training a Auffedem the insulating material webs after developing from the roll and after removal allow the foil packaging to the nominal thickness of the insulating material web. Of the The spin basket also has a hole number of 27,000. This data of the spin basket are however changeable and serve only as an example. Essential is the hole performance, the is reduced compared to conventional manufacturing process. This results in glass wool fibers with a mean fiber diameter of 3 to 4, in particular 3.5 microns.

Overall, can be described by the procedure described a large package of 24 Place insulating rolls on a standard pallet of 1200 x 1200 mm, with compared to a conventional bulk container with 18 insulating rolls and three insulating rolls packed into a module, so each layer three modules a three insulating rolls one Space savings of advantageous about 77% results. This is a significant benefit resulting from the reduced space requirements for transport and storage according to cost effect.

Claims (15)

1. A package (1) comprising a plurality of plastic film wrapped coiled rolls (4) of mineral wool or, more particularly, fibreglass insulation material panels that are designed to be laid also as so-called "wedging felt", said insulation material being arranged on a support surface in preferably parallel rows consisting in each case of a plurality of rolls, as well as in at least two layers (2, 3) on top of each other, whereby each row, consisting of the plurality of rolls (4), is packed in a wrapping of plastic film (6) so as to form, in a compressed state, a module (5), and whereby the layers (2, 3) that are arranged on top of each other are packed in a further plastic film wrapping (7) so as to form a package (1), if necessary with a pallet located beneath the first layer to act as a support surface,
   characterised in that,
   within a module (5) of the package, which itself has a height of between 2.3 m. and 2.5 m., more particularly 2.4 m., with the insulation material panels having a thickness of between 60 mm. and 240 mm., not only the individual roll (4) but also the plurality of rolls are compressed in the longitudinal direction in such a way during the compression of the row of rolls within the module (5) that the ratio of insulating surface m²/support surface m² of the package (1) is equal to between approx. 50 : 1 and 115 : 1.
2. A package (1) according to claim 1, characterised in that the rolls (4) are held under a high degree of compression by means of the plastic film wrapping (6) applied around the module (5).
3. A package (1) according to claim 1 or 2, characterised in that the compression lies within the range 28 - 32 % and is, in fact, preferably about 30 %.
4. A package (1) according to one of the preceding claims, characterised in that, for the insulation material (9), fibres of a high quality are used, more particularly fibres that have been manufactured using a revolving centrifugal spinning-drum with an aperture output of 0.7 - 1.1 kg. of glass-melt per aperture and per day, more particularly 0.9 kg. per aperture and day.
5. A package (1) according to claim 4, characterised in that fibres with an average fibre diameter of 3 - 4 µm are used, and more particularly 3.5 µm.
6. A package (1) according to one of the preceding claims, characterised in that the package (1) comprises 24 rolls (4) in two layers arranged one on top of the other with 12 rolls in each layer.
7. A package (1) according to one of the preceding claims, characterised in that each module (5) contains four rolls (4).
8. A package (1) according to one of the preceding claims, characterised in that in each case three modules are accommodated standing level and adjacent to each other on a standard pallet.
9. A package (1) according to one of the preceding claims, characterised in that, in each layer, three modules consisting of four rolls and having, in each case, a diameter of 400 mm. are arranged on a standard pallet measuring 1200 mm. x 1200 mm. length and width.
10. A process for assembling a package (1) according to one of the preceding claims, in which a plurality of rolls (4), consisting of panels of insulating material (9) that have been coiled under compression and packed in plastic film, are brought together to form a module (5) and encased in a plastic film wrapping (6) with a plurality of said modules (5) assembled adjacent to each other so as to form one layer on one level and at least one further layer being added above, consisting also of a plurality of modules (5) arranged correspondingly adjacent to each other, and these layers (2, 3) being formed into a package by means of a further plastic film wrapping (7), if necessary with a pallet as a support surface,
    characterised in that,
    for the composition of the module, the adjacently arranged rolls (4) of the module (5) are subjected to a high degree of compression in a longitudinal direction (approximately by 1/3 longitudinally) and, while the compression is being maintained, the row of rolls is encased by the plastic film (6).
11. A process according to claim 10, characterised in that the insulation material panels (9) are subjected to pre-compression before the actual process of coiling.
12. A process according to claim 11, characterised in that, for the pre-compression, the insulation material panels (9) are conveyed through a gapped channel with a reducing gap width.
13. A process according to claim 12, characterised in that, for the pre-compression, a precompressing belt (10) is used positioned diagonally to the belt conveying the insulation material panel (9) and inclined at an angle of between 5° and 10°, and more particularly 8°.
14. A process according to one of the claims 11 to 13, characterised in that the degree of pre-compression for Heat Conductivity Group 035 is between 3.5 and 5.0, more particularly 4.5 with thicknesses of < 200 mm. and 3.6 with thicknesses > 200 mm., or, as the case may be, for Heat Conductivity Group 040, between 5 and 6, more particularly 5.4 with thicknesses of < 220 mm. and 4.1 with thicknesses of about 240 mm.
15. A package (1) according to one of the claims 1 to 9, characterised in that the compression within the module is in the region of 7.5 to 8.5, preferably 7.9.

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