Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
  • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/18—Expanded metal making
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/18—Expanded metal making
  • Y10T29/185—Expanded metal making by use of reciprocating perforator
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24628—Nonplanar uniform thickness material
  • Y10T428/24669—Aligned or parallel nonplanarities

Definitions

• the invention relates to a filler material in which a foil material made of metal, in particular aluminum, or of dimensionally stable, flexible material, in particular plastic, is perforated with uniformly distributed, parallel slots running in the longitudinal direction of the tape and stretched transversely to the longitudinal direction of the tape.
• Such materials are used used to fill containers for flammable fluids, because the rapid heat dissipation prevents explosive combustion of the liquids.
• Stretched films of this type are already known, in which the cuts running in the longitudinal direction of the film web are introduced into a flat film web, which is then stretched transversely to the longitudinal extension in this flat form, as a result of which there is only a slight ner forming out of the band plane. It has now been shown that, due to the slight deformation out of the band plane, the individual layers of the foils can cake in the containers or can interlock through the movement, as a result of which free spaces can arise in the container, in which the combustible liquid without the appropriate film inlays are present and an explosive nerburn can take place again.
• the invention has for its object to improve a film of the type mentioned so that the disadvantages mentioned are avoided.
• This is achieved according to the invention in that the foil strip is profiled transversely to the longitudinal direction of the strip. This cross-profiling is retained during the stretching, so that the ner-forming that occurs from the strip plane during the stretching in addition to the profiling results, which on the one hand results in a higher extension from the web area and on the other hand a more stable deformation transversely to the web area.
• the profiling of the film strip can advantageously be formed by waves which preferably extend over the entire film width, which results in a simple, continuously producible profiling.
• the wavy profile can have angular transitions.
• a film strip made of metal, in particular or of dimensionally stable, flexible material, in particular plastic is provided with uniformly distributed slots which run parallel to one another and to the longitudinal direction of the tape and then transversely to the longitudinal direction is stretched, between the insertion of the slits and the stretching of the band, the latter is profiled in a wave shape, as a result of which a particularly well-profiled filling material is achieved.
• a device for carrying out the above-mentioned method with a conveyor for the film, a cutting tool for forming intermittent slits in the film and a device for stretching the film provided with the slits, and which device has a clamping device for the film longitudinal edges and a rising one Has casserole body, according to the invention is characterized in that the device for stretching the film is preceded by a profiling device for undulating profiling of the film strip provided with the slots.
• the profiling device can be formed by an interlocking pair of profiled rollers, whereby profiling is achieved by rolling tools that allow a high processing speed.
• the profile introduced into the films by the profile rollers can correspond to that of the clamping device for the film longitudinal edges.
• the profile of the clamping device can be provided on the edges of two clamping wheels, which is enclosed on its profiled peripheral surfaces over a part of the circumference by a clamping belt. This device thus also forms a device which achieves a continuous, uniform feed.
• the center point approaching the two clamping wheels can be arranged eccentrically to the center point of a rotating stretching body, the maximum eccentricity being in the region of the part of the clamping wheels enclosed by the clamping belt. In this way it is possible without lubricating the Getting along with material as it passes through the facility, which is particularly important if the filling material is further treated, for example by lacquers or other coatings.
• the clamping belt can be designed as a flat belt which rests on the outer peripheral surfaces of the radially outward projections of the clamping edges profiled on their peripheral surface.
• the K-clamping belt can be designed as a profile belt, the profiling of which is directed outwards and has a transverse profile that is opposite to the clamping belt, as a result of which the film edges are held over their entire length, etc. such that, due to the pre-profiling of the film web, the profile engages in the manner of a gearwheel in the outer profile of the clamping wheels and is held in this position by the toothed belt.
• the distance between the circumference of the stretching body and the clamping device can be greater than half the width of the stretched material band, which means that the material edges between the clamping parts are still pulled out in the clamping area, thereby ensuring that the tape is stretched to the edge area and not, as in previous designs, the edge areas remain undrawn.
• the rotating stretching body can be freely rotatably supported, which has the advantage that it is moved solely by the band pulled over it, so that relative speeds between the band and the stretching body are avoided and the band rolls over the rotating stretching body in the desired extent .
• the rotating stretching body itself can finally be mounted eccentrically, as a result of which an even greater irregularity is achieved.
• the fillers mentioned at the outset can not only be used for infecting containers for explosive fluids, but it has also been found that such fillers are also very effective in solar collectors, since the blackened filler films cannot reflect the irradiated amount of light, but rather do so rather, the incident solar energy is held in the material due to the internal reflections, which leads to particularly good heating of the water or air flowing through the solar collector.
• the drawing shows an exemplary embodiment of the material according to the invention and of the device according to the invention for producing this material.
• Fig. 2 is a section along line II-II of Fig. 1.
• Fig. 3 shows schematically the structure of the entire device.
• Fig. 4 shows the profiling and stretching station in detail.
• FIG. 5 is a top view of the device according to FIG. 4, but without the film strip located therein.
• FIG. 6 is a view analogous to FIG. 5, but with a film strip located therein.
• the finished filling material web designated by 1 in FIG. 1 has openings 2 which are made by introducing slits into the film strip and subsequent stretching, wherein - as can be seen from FIG. 2 - the film strip is profiled transversely to the longitudinal extent, etc. by waves 3, which have angular transitions.
• the film web 1 is pulled off a supply roll 4 and is provided in a cutting station 5 with incisions running parallel to one another in the longitudinal direction of the band.
• These cuts are, as is known in known designs of this type, arranged in rows, the next row following the front row being laterally offset by half a space between the slots, so that when the film strip is stretched transversely, the openings 2 are created in the manner of an expanded metal .
• the film strip coming from the cutting station 5 is guided over a tension roller 6 and fed to a profiling device 7, of which it is transferred to a stretching station 8, in which the belt is given the shape shown in FIG. 1.
• the film web 1 is then guided over a flattening roller 9 and a tension roller 10 to the material winding station 11.
• the profiling device consists of two profiling rollers 12, 13, which are provided on their outer jacket with regular longitudinal ribs, the longitudinal ribs of one roller engaging in the spaces between the longitudinal ribs of the other rollers, that is to say they are interlocked .
• the film strip 1 which is already provided with the incisions running in the longitudinal direction of the strip, is passed through the gap between the two profiling rollers 12, 13 and transferred to the stretching station 8.
• This stretching station has two clamping wheels which are spaced apart from one another, the mean distance of these two clamping wheels corresponding approximately to the width of the film strip coming from the profiling device.
• the clamping wheels have a profile on their outside, etc.
• a toothing which corresponds to the toothing of the profiling rollers, so that the film strip 1, which is provided with waves and comes from the profiling device 7, engages directly in the toothing of the clamping wheels 14, 15.
• a belt 16, 17 is guided around part of the circumference of the clutch wheels 14, 15, etc.
• a toothed belt the toothing of which is directed outwards and engages in the toothing of the clamping wheels 14, 15, etc. such that the belt holds the film web 1 on the clamping wheels 14, 15.
• the clamping belts 16, 17 are guided over deflection rollers 18, 19, 20, 21 and 22, 23, the contact area relating to approximately 1/4 of the circumference of the clamping wheels 14, 15. As can be seen from FIGS.
• rollers 18, 20 and 19, 21 are arranged directly one above the other, which is indicated in FIG. 5 by the fact that the reference numerals 18 and 19 with dashed reference numerals on the rollers 20 and 21st are directed, which - as can be seen from Fig. 4 - indicates that the rollers 18, 19 are arranged directly below the rollers 20, 21.
• a stretching body 24 is arranged, which is formed by a freely rotatably mounted stretching wheel, the outer shell of the stretching wheel being formed by the outer surfaces of two conical stumps adjoining each other with their base. This shape enables particularly good stretching in both directions, etc. also in the middle area, without causing an excessive buckling. As can be seen from FIG.
• the stretching wheel 24 is mounted eccentrically to the clamping wheels 14, 15, the greatest eccentricity being arranged after the release area of the film web 1 from the clamping between the clamping belts 16, 17 and the clamping wheels 14, 15.
• the greatest distance between the outer circumference of the clamping wheel 24 and the circumference of the clamping wheels 14, 15 is greater than the width of the stretched material, as a result of which - as already explained in detail - it is achieved that the film strip transversely from the clamping between the clamping wheels and the clamping belt is pulled out, so that the stretching takes place into the outermost edge region of the film web.
• 6 shows how the film web is changed by the stretching.
• the film strip 1 with its slits 1 ' which is inserted between the rollers 12, 13 in front of the profiling device, is pre-stretched when it is guided upwards via the stretching wheel 24, the stretching and loosening being clearly recognizable through the increasingly wider openings 2.
• the clamping belts 16, 17 can also be designed as flat belts, so that they rest only on the outer surfaces of the outwardly projecting profiles of the clamping wheels, so that the clamping takes place only there and the film web 1 in the region of the depressions between the projections the pinch wheels are not held. This leads to the fact that the stretching in the area of the abutments on the outer surfaces of the projections is stronger than between the projections, so that a slightly wavy outer edge of the film web is achieved.
• the rotating stretching body itself can also be mounted eccentrically, which additionally increases the irregularities of the stretching and results in a wavy edge which has a greater wavelength than the corrugation due to the use of the flat belts.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
• Glass Compositions (AREA)
• Containers And Plastic Fillers For Packaging (AREA)
• Basic Packing Technique (AREA)
• Crystals, And After-Treatments Of Crystals (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9544534

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (4)

Family Cites Families (24)

• 1999
  • 1999-04-16 FR FR9904844A patent/FR2792231B1/fr not_active Expired - Fee Related
• 2000
  • 2000-04-14 EP EP00918561A patent/EP1183115B1/fr not_active Revoked
  • 2000-04-14 AT AT00918561T patent/ATE238113T1/de not_active IP Right Cessation
  • 2000-04-14 AU AU39454/00A patent/AU3945400A/en not_active Abandoned
  • 2000-04-14 ES ES00918561T patent/ES2198298T3/es not_active Expired - Lifetime
  • 2000-04-14 DE DE50001878T patent/DE50001878D1/de not_active Expired - Fee Related
  • 2000-04-14 WO PCT/AT2000/000091 patent/WO2000062954A1/fr not_active Application Discontinuation
• 2001
  • 2001-04-04 US US09/825,679 patent/US6609279B2/en not_active Expired - Lifetime

Non-Patent Citations (1)

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