WO1999046057A1 - Segmented die for applying hot melt adhesives or other polymer melts - Google Patents

Segmented die for applying hot melt adhesives or other polymer melts Download PDF

Info

Publication number
WO1999046057A1
WO1999046057A1 PCT/US1999/005461 US9905461W WO9946057A1 WO 1999046057 A1 WO1999046057 A1 WO 1999046057A1 US 9905461 W US9905461 W US 9905461W WO 9946057 A1 WO9946057 A1 WO 9946057A1
Authority
WO
WIPO (PCT)
Prior art keywords
die
air
manifold
polymer
flow passage
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.)
Ceased
Application number
PCT/US1999/005461
Other languages
English (en)
French (fr)
Inventor
Martin A. Allen
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.)
Nordson Corp
Original Assignee
Nordson Corp
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 Nordson Corp filed Critical Nordson Corp
Priority to DE69917234T priority Critical patent/DE69917234T2/de
Priority to EP99911359A priority patent/EP1062051B1/en
Priority to AU30016/99A priority patent/AU3001699A/en
Priority to JP2000535462A priority patent/JP4611521B2/ja
Publication of WO1999046057A1 publication Critical patent/WO1999046057A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0861—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with one single jet constituted by a liquid or a mixture containing a liquid and several gas jets
    • 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
    • B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
    • B05C5/0275—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve
    • B05C5/0279—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve independently, e.g. individually, flow controlled
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D01D4/025—Melt-blowing or solution-blowing dies
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • 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
    • B05C5/0237—Fluid actuated valves

Definitions

  • This invention relates generally to dies for applying hot melt
  • invention relates to a modular die provided with at least one air-assisted die
  • the invention relates to a segmented die
  • each unit including a
  • meltblowing dies have been adapted for the
  • Patent No. 5,61 8,566) Longer dies can be achieved by adding more
  • Meltblowing is a process in which high velocity hot air
  • primary air is used to blow molten filaments
  • process employs a die provided with (a) a plurality of openings (e.g. orifices)
  • the openings are in the form of slots. In either design,
  • the die tips are adapted to form a row of filaments which upon contact with
  • the converging sheets of hot air are carried to and deposited on a collector
  • the filaments extruded from the air-assisted die may be any suitable material.
  • fiber is used interchangeably with the term “fiber” and refers to
  • Another popular die head is a spiral spray nozzle. Spiral spray
  • bead nozzles such as bead nozzles and coating nozzles.
  • the segmented die assembly of the present invention is of
  • Each die unit includes a manifold segment and a
  • the die module mounted on the manifold segment.
  • the die module has
  • the die tip may be a
  • the nozzle may be a spiral nozzle or a spray nozzle.
  • nozzle is used herein in the
  • the molten filaments to divert, attenuate or change the flow pattern of the
  • the nozzle is a meltblowing die tip
  • filaments are extruded through the meltblowing die tip, they are contacted
  • the nozzle may also be
  • the die assembly may include
  • the segmented die units are assembled by interconnecting
  • a die module is mounted on each
  • polymer melt is extruded as a row of filaments from the
  • each module is provided with an
  • air-actuated valve to selectively open and close the polymer flow passage.
  • the instrument air for activating the valve is delivered through each
  • valves may be individually actuated
  • the segmented die assembly of the present invention offers
  • the die length was determined by the manifold length which had to -6- be performed.
  • a manifold would be built to accommodate a
  • the manifold is made up of only the active manifold
  • operations may include dormant polymer flow passages, as in situations
  • Figure 1 is a top plan view of a segmented meltblowing die
  • Figure 2 is a top plan view of the present segmented die
  • Figure 3 is a front elevation view of the segmented die
  • Figure 4 is an enlarged sectional view taken along plane 4-4 of
  • Figure 1 illustrating a middle section of the segmented manifold.
  • Figure 5 is a sectional view taken along cutting plane 5-5 of
  • Figure 1 illustrating an end plate of the segmented manifold.
  • Figure 6 is a sectional view taken along cutting plane 6-6 of
  • Figure 7 is a sectional view of the segmented manifold taken
  • Figure 8 is a sectional view of the segmented manifold taken
  • the manifold segments are labeled 1 1 A through 1 1 F and the die modules
  • unit 1 5 comprises a manifold segment 1 1 , a die module 1 2 mounted
  • valve actuator 20 for controlling the flow of polymer melt
  • each die module 1 has a
  • the preferred die modules 1 2 are the type described in U.S.
  • Patents 5,61 8,566 and 5,728,21 9 the disclosures of which are
  • each die module 1 2 consists of a die
  • the die body 1 6 has formed therein an upper
  • the upper recess 1 7 defines a cylindrical chamber
  • a valve assembly 21 which is closed at its top by threaded plug 24.
  • piston 22 having depending from
  • the piston 22 is reciprocally movable within chamber
  • the ports 26 and 27 serve as described in more detail below.
  • instrument gas or air air
  • valve portion 32 terminating in valve portion 32 at its lower extremity.
  • insert member 30 is of reduced diameter and in combination with the die
  • insert member 30 abuts the top surface of recess 1 8 and has a plurality
  • circumferential port 37 formed therein and in fluid
  • Valve stem 25 extends through body opening 1 9 and axial
  • valve moves stem end 40 away from port 32 (open position), permitting the
  • the die tip assembly 1 3 comprises a stack up of four parts: a
  • assembly 1 3 can be preassembled and adjusted prior to mounting onto the
  • Transfer plate 41 is a thin metal member having a central
  • the transfer plate 41 covers the cavity 34
  • Opening 44 registers with port 32 with an o-ring
  • Holes 49 register with air holes 57 formed in die tip 42.
  • the die tip 42 comprises a base member which is co-extensive
  • triangular nose piece 52 which may be integrally formed with the base.
  • the nose piece 52 terminates in apex 56 which has a row of
  • Air plates 43a and 43b are in flanking relationship to the nose
  • Air (referred to as process air) is directed to opposite sides of the
  • nose piece 52 into the converging slits and discharge therefrom as -1 1 - converging air sheets which meet at apex of nose piece 52 and contact the
  • modules may also be used.
  • the modules may dispense meltblown fibers
  • module may be provided with a variety of nozzles including meltblowing
  • segmented manifold 1 1 comprises end
  • End plates 61 and 62 are designed to provide fluid seals at
  • Inlet 64 may have removable filter
  • air inlet 67 in plate 62 provides air, referred to as instrument
  • end plate 62 has threaded
  • middle section 1 1 D has four bored and countersunk
  • plate 1 1 D will align with threaded holes in plate 1 1 C, and threaded holes
  • threaded holes in adjacent plates is repeated over the length of the die.
  • Countersunk holes 86a-d are of sufficient depth so that the heads of bolts
  • O-rings may also be used to seal
  • middle sections 1 1 A-F have
  • Polymer passage 92 interconnects manifold segments 1 1 A-F.
  • polymer melt enters the die through inlet 64 and flows into passage 92.
  • Each middle plate has a hole 93a-f (see Figure 7) through which leads from
  • Polymer melt thus enters the die through plate 61 at 64, fills
  • passage 92 flows in parallel through holes 93A-F, fills continuous passage
  • Heating element 97 maintains the
  • Middle sections 1 1 A-F have a plurality of
  • passages 1 03a-d register with groove 1 01 so that air entering the groove
  • passages 1 03a-d register with groove 1 06 in plate 61 passages which turns
  • passages 103e, f register with groove 107 formed in plate 62 which
  • Groove 108 feeds passage 103h and a portion of the air travels back along
  • Central heating element 1 1 2 heats the
  • Plates 1 1 A-F have holes which define air passage 1 1 3 which extends -1 5- the length of the die. Slots 1 09 and 1 1 1 discharge from opposite sides into
  • passage 1 1 3 which feeds in parallel holes 1 1 4A-F which in turn feed
  • Each die module comprises a valve assembly 21 which is
  • controller 1 20D controls the flow of instrument air.
  • each plate delivers the air in parallel to each of solenoid valves 20A-F
  • the valve delivers the air to either
  • pressurized instrument air is delivered via
  • valve stem 25 seats on port 32 thereby closing the
  • solenoid 20D In the open position, solenoid 20D
  • each die module has a separate
  • solenoid valve such that the polymer flow can be controlled through each
  • valves 21 in a plurality of adjacent die modules be used to activate valves 21 in a plurality of adjacent die modules.
  • present invention can be tailored to meet the needs of a particular
  • the length of the heater elements will be selected based on
  • the modules 1 2 may be mounted on each manifold segment 1 1 -1 7- before or after interconnecting the segments 1 1 , and may include any of
  • Figure 3 illustrates four modules 1 2
  • meltblowing die tips and two end modules with spiral nozzles.
  • die nozzles e.g. meltblowing, spiral, or bead
  • length and adhesive patterns may be important for applying adhesives to
  • a hot melt adhesive is delivered to the die 10
  • the polymer melt is distributed laterally in the die tip 1 3 and discharges
  • Typical operation parameters are as follows:
  • the die assembly 1 0 may be used in
  • meltblowing any polymeric material but meltblowing adhesives is the
  • the adhesives include EVA's (e.g. 20-40 wt% VA).
  • meltblown webs Conventional hot melt adhesives useable include those
  • melt adhesives include SIS and SBS block copolymer based adhesives.
  • These adhesives contain block copolymer, tackifier, and oil in various ratios.
  • melt adhesives are by way of illustration only; other melt
  • invention may also be used to meltblow polymer in the manufacture of
  • the dimensions of the die tip may have a small difference in certain
  • the typicai meltblowing web forming resins include a wide
  • polystyrene resin such as polyethylene and ethylene homopolymers and -20- copolymers.
  • specific thermoplastics include ethylene acrylic copolymers,
  • nylon polyamides, polyesters, polystryrene, poly(methyl methacrylate),
  • the preferred resin is polypropylene. The above list is not intended to be
  • thermoplastics substrates or objects with thermoplastics.
  • thermoplastic polymer hot melt adhesives or those used in
  • meltblowing webs may be delivered to the die by a variety of well known

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Nozzles (AREA)
  • Coating Apparatus (AREA)
PCT/US1999/005461 1998-03-13 1999-03-12 Segmented die for applying hot melt adhesives or other polymer melts Ceased WO1999046057A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69917234T DE69917234T2 (de) 1998-03-13 1999-03-12 Segmentmatrize zum auftragen von heissschmelzklebstoffen oder anderen polymerschmelzen
EP99911359A EP1062051B1 (en) 1998-03-13 1999-03-12 Segmented die for applying hot melt adhesives or other polymer melts
AU30016/99A AU3001699A (en) 1998-03-13 1999-03-12 Segmented die for applying hot melt adhesives or other polymer melts
JP2000535462A JP4611521B2 (ja) 1998-03-13 1999-03-12 ホットメルト接着剤または他のポリマー溶融物を塗布するためのセグメントダイ

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US7778098P 1998-03-13 1998-03-13
US60/077,780 1998-03-13
US09/138,039 1998-08-20
US09/138,039 US6220843B1 (en) 1998-03-13 1998-08-20 Segmented die for applying hot melt adhesives or other polymer melts

Publications (1)

Publication Number Publication Date
WO1999046057A1 true WO1999046057A1 (en) 1999-09-16

Family

ID=26759661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/005461 Ceased WO1999046057A1 (en) 1998-03-13 1999-03-12 Segmented die for applying hot melt adhesives or other polymer melts

Country Status (7)

Country Link
US (2) US6220843B1 (https=)
EP (1) EP1062051B1 (https=)
JP (1) JP4611521B2 (https=)
CN (1) CN1102079C (https=)
AU (1) AU3001699A (https=)
DE (1) DE69917234T2 (https=)
WO (1) WO1999046057A1 (https=)

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EP1157746A2 (en) 2000-05-24 2001-11-28 Illinois Tool Works Inc. Segmented stackable head design
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WO2004001104A1 (en) * 2002-06-20 2003-12-31 3M Innovative Properties Company Attenuating fluid manifold for meltblowing die
EP2106860A3 (en) * 2002-01-28 2009-12-30 Nordson Corporation Compact heated air manifolds for adhesive application
EP2248599A1 (de) * 2009-05-07 2010-11-10 Robatech AG Vorrichtung mit mehreren Hochdruckdüsen und Schutzkammern sowie Verfahren zum Abgeben eines Klebstoffs
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US9067236B2 (en) 2009-10-05 2015-06-30 Nordson Corporation Two-component liquid dispenser gun and system
US9914147B2 (en) 2006-01-06 2018-03-13 Nordson Corporation Liquid dispenser having individualized process air control
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US10605292B2 (en) 2009-05-06 2020-03-31 Dürr Systems Ag Coating agent device and coating device
US12122932B2 (en) 2020-05-29 2024-10-22 Axalta Coating Systems Ip Co., Llc Coating compositions for application utilizing a high transfer efficiency applicator and methods and systems thereof
US12539525B2 (en) 2017-11-30 2026-02-03 Axalta Coating Systems Ip Co., Llc Coating compositions for application utilizing a high transfer efficiency applicator and methods and systems thereof

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JP2024534965A (ja) 2021-09-08 2024-09-26 ソルベンタム インテレクチュアル プロパティズ カンパニー 生物製剤の採取方法

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US6220843B1 (en) 2001-04-24
EP1062051B1 (en) 2004-05-12
EP1062051A1 (en) 2000-12-27
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DE69917234D1 (de) 2004-06-17
USRE39399E1 (en) 2006-11-14

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