EP0275542A1 - Auftragskopf - Google Patents

Auftragskopf Download PDF

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Publication number
EP0275542A1
EP0275542A1 EP19870119176 EP87119176A EP0275542A1 EP 0275542 A1 EP0275542 A1 EP 0275542A1 EP 19870119176 EP19870119176 EP 19870119176 EP 87119176 A EP87119176 A EP 87119176A EP 0275542 A1 EP0275542 A1 EP 0275542A1
Authority
EP
European Patent Office
Prior art keywords
outlet
application head
valves
strip
valve arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19870119176
Other languages
German (de)
English (en)
French (fr)
Inventor
Gerd Prodöhl
Josef Rothen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MACON GMBH KLEBSTOFF-AUFTRAGSGERAETE
Original Assignee
Macon Klebstoff-Auftragsgerate GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Macon Klebstoff-Auftragsgerate GmbH filed Critical Macon Klebstoff-Auftragsgerate GmbH
Publication of EP0275542A1 publication Critical patent/EP0275542A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0245—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web
    • B05C5/025—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web only at particular part of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/08—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating from outlets being in, or almost in, contact with the textile material

Definitions

  • the invention relates to an application head of the type corresponding to the preamble of claim 1.
  • the base body is cuboidal in shape and contains arrangements for filtering and reheating the incoming hot melt adhesive.
  • the outlet valve arrangement consists of a single outlet valve, to which a single, essentially identical return valve is assigned, which is actuated alternately with the outlet valve.
  • the return valve is closed, so that the entire amount of hot-melt adhesive conveyed out of the outlet valve.
  • the return valve is open and the unused hot-melt adhesive flows back into the storage container via the return line.
  • the feed pump that pressurizes the hot-melt adhesive always works against the same flow resistance, so that no pressure fluctuations occur. which otherwise lead to an uneven escape of hot melt adhesive from the outlet nozzle.
  • the outlet nozzle creates a single narrow trace of glue on the conveyed goods.
  • the invention has its origin from a special problem which arises in children's diapers made of paper and nonwoven whose leg closure is accomplished by means of a glued-in rubber band.
  • rubber bands have a width of 3.5 or 7 mm, for example. It was found that with only one-sided gluing, they often detached from the surrounding material. Double-sided gluing produced significantly better results.
  • the invention has for its object to design an application head of the type corresponding to the preamble of claim 1 so that a bilateral application of flowable material on a leading sheet, in particular tape or strip-like material, is possible.
  • the flowable material for example an adhesive, can be applied simultaneously on both sides.
  • connection for the return of the flowable material is provided, which is controlled by a return valve arrangement, the flow resistance of which corresponds to that of the outlet valve arrangement and which opens alternately with the outlet valve arrangement and closes, this can advantageously be achieved with respect to the invention in the manner set out in claim 2.
  • the flow resistance of the return valve is only half the flow resistance of a single outlet valve, so that when both outlet valves are opened and when the return valve is opened, the flow resistances are the same and there are no pressure fluctuations in the supply line of the flowable medium.
  • An important embodiment of the invention is the subject of claim 4.
  • the displacement of the outlet valves enables easier threading of the fabric and also easier replacement of the outlet nozzles, which would be exactly opposite one another when aligned and would abut against one another during dismantling.
  • the displacement of the outlet valves enables the further development according to claim 5, which enables the sheet-like structure or the strip-like or strip-like material to easily rest against the outlet openings provided for the two sides.
  • the goods never go limp in this way, and there is always a controlled transition of the amount of the flowable material for the goods discharged from the outlet orifices.
  • both outlet valves are opened at the same time with offset outlet valves, the application of the flowable material begins on the two sides of the fabric in its forward direction at different points. This must sometimes be avoided, which is possible by opening times that follow one another. There is then a period in which only one outlet valve is open and another period in which both outlet valves are open. Because of the constant return resistance with a common return valve according to claim 2, there would then be pressure fluctuations in the system, depending on whether one or two outlet valves are open. This is one of the cases in which each outlet valve must be assigned its own return valve, as stated in claim 3.
  • outlet nozzles For strip or strip-shaped material, the formation of the outlet nozzles is expediently made in the manner set out in claim 6.
  • a first version of the arrangement of the outlet nozzles is the subject of claim 7.
  • the strip or strip-shaped material is guided past the flat side of the plate-shaped base body and the outlet openings on the side of the base body are arranged relatively close to it.
  • the axis of the outlet nozzles no longer aligns with the axis of the outlet valve, but rather forms a generally right angle to it.
  • the outlet nozzles can further discharge from the assembly formed by the plate-shaped base body and the valves, as a result of which the outlet orifices can be brought closer to the web of the material more easily.
  • the application head designated 100 as a whole in FIGS. 1 and 2 is used for applying adhesive to a band-shaped or strip-shaped product, in the exemplary embodiment to a rubber band 10.
  • the application head 100 comprises a base body 1 in the form of a thick plate with inner channels, which in the vicinity of its corners has bores 2 running perpendicular to its flat side, through which support rods can be inserted in a certain position for the purpose of mounting the application head 100, on which the base body 1 can be fixed in the manner indicated by means of screws 3.
  • the base body 1 has on the left side in FIG. 1 a connection for the adhesive as well as pneumatic connections 5, 6 and 7, which are used to control outlet valves 9 and 11, which are attached to the front flat side 8 of the base body 1 and also have a cuboid housing and the return valve 12 serve.
  • the outlet valves 9, 11 and the return valve 12 are essentially identical to one another and comprise a pneumatically displaceable valve needle which determines the axes 13, 14 and 15 of the valves 9, 11 and 12, which are essentially parallel to the longer sides of the base body 1 and are arranged perpendicular to the path of the rubber band 10.
  • the return valve 12 has a connection 16 for the return line, through which, when the outlet valves 9 and 11 are closed, the amount of adhesive entering through the connection 4 is passed back into the storage container.
  • the return valve 12 has an inner nozzle plate which opposes the flow was the returning cross-section so determined that this is equal to the flow resistance in the case of adhesive emerging from both outlet valves 9 and 11, so that the pump (not shown) always has to work against the same resistance and no pressure fluctuations occur in the system as long as the two outlet valves 9, 11 can always be opened and closed at the same time.
  • the outlet nozzles 20 are arranged by means of screw caps 18, which are shown separately in FIGS. 3 to 5.
  • the outlet nozzles 20 comprise an essentially cylindrical nozzle body with a radial peripheral flange 21 provided at the upper end, on which the screw cap 18 engages the valves 9 and 11 to fix the outlet nozzle 20.
  • the lower area in FIG. 3 is flattened on the opposite sides and forms key surfaces which enable the outlet nozzle 20 to be aligned about its axis 23.
  • a groove 24 of U-shaped cross-section running parallel to the key surfaces 22 is formed, the width of which depends on the width of the rubber band 10 and in which it is guided laterally.
  • the outlet nozzle 20 has an adhesive channel 26 which is coaxial with the axis 23 and which has a throttle point 27 at the lower end which opens into a niche-shaped recess 28 at the bottom of the groove 24 which forms the outlet opening for the adhesive.
  • the outlet nozzle 20 is cut out in the region of the groove 24 along an axis-parallel plane 29 which is arranged at a distance on the side of the axis 23 indicated by the forward direction indicated in FIG.
  • the axes 23 of the two outlet nozzles 20 of the outlet valves 9 and 11 coincide with their axes 13 and 14.
  • the arrangement of the two outlet nozzles is such that the cutout 30 is always in the forward direction of the rubber band 10, i.e. 1 is on the right side.
  • the outlet nozzle 20 of the outlet valve 9 is seated with the bottom 24 ⁇ of its groove from above on the rubber band 10 and is used for application to the top.
  • the outlet nozzle 20 of the outlet valve 11 lies with the bottom 24 ⁇ of its groove 24 from below against the rubber band 10 and is used for application on its underside.
  • the height of the groove bases 24 ⁇ and 24 ⁇ is chosen so that the groove base 24 ⁇ of the upper outlet nozzle 20 is at most by the thickness of the rubber band 10 above the groove base 24 ⁇ of the lower outlet nozzle 20.
  • the groove base 24 ⁇ is somewhat deeper, so that the rubber band 10 receives a small wrap angle both on the lower outlet nozzle 20 and on the upper outlet nozzle 20 and is applied with a gentle pressure determined by the tension in the longitudinal direction in the groove bases 24 ⁇ and 24 ⁇ .
  • This ensures that the adhesive according to FIG. 4 only spreads to the right.
  • outlet valve 9 and the return valve 12 are arranged side by side and the outlet valve 11 is arranged in the middle on the base body 1.
  • the outlet nozzles 20 are thus offset from one another in the running direction of the rubber band 10. As a result, the threading of the rubber band 10 and the replacement of the outlet nozzles 20 are facilitated and the described two-sided contact of the rubber band 10 is made possible.
  • the rubber band 10 runs close to the base body 1 parallel to its flat side. It can sometimes be difficult to get so close to the web of the rubber band 10 with the fairly large application head 100.
  • other outlet nozzles 40 (FIGS. 6 and 7) can be used, which in turn are essentially cylindrical with a radial edge flange 41 and key surfaces 42.
  • the outlet nozzles 40 have a groove 44 on the circumference, in the groove base of which a niche-shaped recess 48 is provided, which is fed via a throttle point 47 from a central adhesive channel 46 and ends at a surface 49 running perpendicular to the rubber band 10, which cutout 50 of the outlet nozzle 40 limits in which the adhesive transferred to the rubber band 10 is no longer touched.
  • the outlet nozzle 40 is arranged through differently arranged outlet points on the outlet valves 9, 11 or with the aid of elbows so that it unloads laterally from the outlet valves 9, 11 and its axis 43 no longer coincides with the axes 13 or 14. As a result, the application head can be held at a greater distance from the order point, which can sometimes be necessary in a processing line due to space constraints. It is understood that two Application nozzles 40 cooperate to provide the rubber band 10 with adhesive from both sides at the same time.
  • the outlet valves 9 and 11 are pneumatically controlled. By opening and closing together, adhesive can be applied to the rubber band 10 in sections. Because of the dislocation, the adhesive application on the top and bottom of the rubber band begins at different points. In many cases this is irrelevant, but there are other cases in which care must be taken to ensure that the application of adhesive on the top and on the bottom always begins and / or ends exactly at one and the same point along the rubber band 10.
  • This can be achieved in that the outlet valves 9, 11 are not actuated at the same time, but that in the arrangement according to FIG. 1 the lower outlet valve 11 opens a little earlier in the direction of travel of the rubber band shown and the upper outlet valve 9 follows when the Start of the lower adhesive application is located at the level of the outlet nozzle 20 of the upper outlet valve 9. In the meantime, only the lower outlet valve 11 is open, then both outlet valves 9, 11.
  • the adhesive pump therefore works against different flow resistances, which leads to pressure fluctuations in the system.
  • each outlet valve 9, 11 is assigned its own return valve, which has the same flow resistance as the outlet valve in question. This allows the pressure to be kept constant, regardless of whether just one or more outlet valves are open.

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  • Coating Apparatus (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
EP19870119176 1987-01-23 1987-12-24 Auftragskopf Withdrawn EP0275542A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3701941 1987-01-23
DE19873701941 DE3701941A1 (de) 1987-01-23 1987-01-23 Auftragskopf

Publications (1)

Publication Number Publication Date
EP0275542A1 true EP0275542A1 (de) 1988-07-27

Family

ID=6319390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870119176 Withdrawn EP0275542A1 (de) 1987-01-23 1987-12-24 Auftragskopf

Country Status (2)

Country Link
EP (1) EP0275542A1 (enExample)
DE (1) DE3701941A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11752517B2 (en) 2020-09-29 2023-09-12 C3 Corporation Hotmelt application system and process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8815242U1 (de) * 1988-12-07 1990-05-10 Nordson Corp., Westlake, Ohio Vorrichtung zum Auftragen eines Klebstoffes auf elastische Fäden
DE3912782A1 (de) * 1989-04-19 1990-10-25 Bayerische Motoren Werke Ag Vorrichtung zum auftragen von kleber- und/oder dichtmittel-bahnen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504701A1 (de) * 1974-02-11 1975-08-14 Inventing Ab Beschichtungsverfahren und -vorrichtung
GB2133317A (en) * 1982-12-31 1984-07-25 Imerica De Calcomanias Sa System for the metered impregnation of emulsion on cloths
DE3200469C2 (de) * 1982-01-09 1985-01-03 Dittberner GmbH, 4006 Erkrath Einrichtung zum längenabschnittweisen Auftragen von Leim auf eine laufende Bahn
DE3515091A1 (de) * 1985-04-26 1986-10-30 Bayer Ag, 5090 Leverkusen Vorrichtung zum benetzen von faeden, folien oder fadenscharen mit fluessigkeiten und ihre verwendung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1090331A (en) * 1963-10-31 1967-11-08 Paul Martin Gilfillan Method and apparatus for coating sheet material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504701A1 (de) * 1974-02-11 1975-08-14 Inventing Ab Beschichtungsverfahren und -vorrichtung
DE3200469C2 (de) * 1982-01-09 1985-01-03 Dittberner GmbH, 4006 Erkrath Einrichtung zum längenabschnittweisen Auftragen von Leim auf eine laufende Bahn
GB2133317A (en) * 1982-12-31 1984-07-25 Imerica De Calcomanias Sa System for the metered impregnation of emulsion on cloths
DE3515091A1 (de) * 1985-04-26 1986-10-30 Bayer Ag, 5090 Leverkusen Vorrichtung zum benetzen von faeden, folien oder fadenscharen mit fluessigkeiten und ihre verwendung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11752517B2 (en) 2020-09-29 2023-09-12 C3 Corporation Hotmelt application system and process
US12383924B2 (en) 2020-09-29 2025-08-12 C3 Corporation Hotmelt application system and process

Also Published As

Publication number Publication date
DE3701941A1 (de) 1988-08-04
DE3701941C2 (enExample) 1990-02-15

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