US3537653A - Adhesive applicators - Google Patents

Adhesive applicators Download PDF

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Publication number
US3537653A
US3537653A US748783A US3537653DA US3537653A US 3537653 A US3537653 A US 3537653A US 748783 A US748783 A US 748783A US 3537653D A US3537653D A US 3537653DA US 3537653 A US3537653 A US 3537653A
Authority
US
United States
Prior art keywords
adhesive
pressure
piston
cylinder
valve
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.)
Expired - Lifetime
Application number
US748783A
Other languages
English (en)
Inventor
Reginald Jones
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.)
Stabilag Engineering Ltd
Original Assignee
Stabilag Engineering Ltd
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 Stabilag Engineering Ltd filed Critical Stabilag Engineering Ltd
Application granted granted Critical
Publication of US3537653A publication Critical patent/US3537653A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1044—Apparatus or installations for supplying liquid or other fluent material to several applying apparatus or several dispensing outlets, e.g. to several extrusion nozzles
    • 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
    • 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
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus

Definitions

  • apparatus for applying a hot melt adhesive includes a container and means for melting'the adhesive in the container, at circulating line for leading the melted adhesive to one or more application points, and a pump for driving the adhesive through the line, a nozzle at the or each application point arranged to be operated in response to rise in pressure of the adhesive in the line above a preset pressure, and means enabling the pressure in the lines to be selectively raised above the set pressure.
  • apparatus will hereinafter be referred to as of the type defined.
  • apparatus of the type defined for applying a hot melt adhesive comprises a simple shut-off valve in the or each nozzle operated by a pressure responsive device which is biassed towards the closed position of the valve, there being an air inlet to the side of the pressure responsive device remote from the valve for the selective admission of pressure air to prevent opening of the valve in response to the rise in pressure of the adhesive created by the pressure control device.
  • the pressure responsive device may be biassed towards the closed position of the valve by a spring, but preferably, the pressure responsive device is air biassed.
  • the load on the pressure responsive device is Patented Nov. 3, 1970 such as can be overcome by the rise in pressure of the adhesive, and to prevent actuation of an individual nozzle, pressure air is admitted in the first case, or additional pressure air in the second case, so that the load on the pressure responsive device is such that it will not be overcome by a rise in pressure in the adhesive.
  • individual nozzles in a series of nozzles fed by a common line can be selectively prevented from dispensing adhesive if, for example, supply of articles (to receive adhesive) to any one or more nozzles becomes discontinuous, and which does not warrant closing down the whole apparatus.
  • the nozzle 1 has a straight sided orifice 2 which is normally closed by a tungsten carbide pad 3 on a stem 4 forming an extension of a piston 5 sealed by rings 6 in a cylinder 7 formed in the body of the nozzle.
  • the stem 4 continues above the piston 5 to a piston 8 in a cylinder 9, an inlet 10 admitting pressure air at a constant pressure to bear on the piston 8 to urge the valve member 3 against the orifice 2 to close the nozzle.
  • the air inlet 10 is connected to a source of pressure air by a line 11.
  • the pressurised adhesive circulating through the chamber 12 through inlet and outlet passages 14 and 15, respectively from the pressurising device passes through a chamber 12, one wall of which is defined by the piston 5, so that if the pressure in the line rises sufficiently to overcome the restraint of the air bias, the piston 5 will move against the spring 16 to open the valve 3 and allow the adhesive to be applied through the orifice 2.
  • the supply of pressure air is actuated to admit additional pressure air to the cylinder 12 to hold the valve closed against the increased pressure in the adhesive.
  • the valve member 3 has a flat valve closing surface and the orifice 2 is a circular straight-sided opening through a flat lower wall of the valve chamber.
  • the length of the orifice is equal to or greater than four times its diameter and this ensures that the vena contracta connecting adhesive flowing through the orifice with the mass of adhesive in the chamber occurs in the length of the nozzle and not outside it, so that severing of the applied adhesive from the main body is simplified when the pressure drops and the valve closes.
  • the tungsten carbide valve member is advantageous in that it does not deform under the relatively high pressures at which the system operates.
  • bleed holes '13 are provided through which adhesive can be ejected as the piston 5 is raised. Also, similar bleed holes 13 are provided in the wall of the cylinder 9 to provide for ejection of any adhesive that has leaked into that cylinder.
  • Apparatus for applying a hot melt adhesive to workpieces comprising a first cylinder having a first piston disposed for axial movement therein, said piston and cylinder defining beneath said piston an adhesive chamher with a nozzle orifice at the lower axial end thereof, a valve member carried by said piston for movement into and from sealing relation with respect to said orifice, there being adhesive inlet and outlet passages communicating with said chamber in all positions of said valve member for constantly circulating liquid adhesive through said chamber, said liquid adhesve being under pressure and exerting force on said piston in a direction tending to unseat said valve member, a second cylinder axially aligned with said first cylinder, means interconnecting said first and second pistons for movement together, and means for conducting pressurized fluid into said second cylinder only on the side of said second piston remote from the first piston, for thereby applying a force to said second piston in a direction to seat said valve member.
  • Apparatus as in claim 1 including a spring within said second cylinder thrusting against said second piston in a direction to seat said valve member.

Landscapes

  • Coating Apparatus (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Package Closures (AREA)
US748783A 1966-05-10 1968-07-30 Adhesive applicators Expired - Lifetime US3537653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20666/66A GB1135101A (en) 1966-05-10 1966-05-10 Adhesive applicator

Publications (1)

Publication Number Publication Date
US3537653A true US3537653A (en) 1970-11-03

Family

ID=10149657

Family Applications (1)

Application Number Title Priority Date Filing Date
US748783A Expired - Lifetime US3537653A (en) 1966-05-10 1968-07-30 Adhesive applicators

Country Status (5)

Country Link
US (1) US3537653A (xx)
DE (1) DE1752552A1 (xx)
FR (1) FR1571747A (xx)
GB (1) GB1135101A (xx)
NL (1) NL6808880A (xx)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589612A (en) * 1969-12-22 1971-06-29 Prismo Universal Corp Modular liquid spray gun
US3815822A (en) * 1971-11-26 1974-06-11 Molins Ltd Adhesive-applying apparatus
US3933312A (en) * 1973-04-26 1976-01-20 Messrs. Demag Kunstofftechnik Gmbh Gating arrangement for the moulding working of plastics formed from a plurality of fluid constituents
US4005685A (en) * 1975-07-29 1977-02-01 Endre Kovacs Fuel injection apparatus
US4124163A (en) * 1976-04-03 1978-11-07 Firma Heinrich Buhnen Kg Relief pressure valve for hot melt adhesive
US4583710A (en) * 1982-05-10 1986-04-22 Cornell Research Foundation, Inc. Electromagnetic valve for pulsed molecular beam
US5129551A (en) * 1987-03-09 1992-07-14 Imperial Chemical Industries Plc Automatic dispensing system for liquids
US5186393A (en) * 1990-12-20 1993-02-16 Fluidyne Corporation On-off valves and pressure regulators for high-pressure fluids
US5205488A (en) * 1990-03-26 1993-04-27 Lonza Ltd. Process and device for spraying a liquid intermittently, especially a lubricant suspension to be sprayed under high pressure
US5297777A (en) * 1990-12-20 1994-03-29 Jetec Company Instant on-off valve for high-pressure fluids
US5524821A (en) * 1990-12-20 1996-06-11 Jetec Company Method and apparatus for using a high-pressure fluid jet
EP0790080A3 (en) * 1996-02-16 1998-07-22 Nireco Corporation Hot melt applicator and nozzle used therefor
US5799688A (en) * 1990-12-20 1998-09-01 Jetec Company Automatic flow control valve
US20150251208A1 (en) * 2012-10-01 2015-09-10 Heishin Ltd. Discharge system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827603A (en) * 1972-06-01 1974-08-06 Nordson Corp Thermoplastic applicator system in which the pump back-pressure controls the dispensing outlet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1311760A (en) * 1919-07-29 Means for and method of
US1332544A (en) * 1919-03-08 1920-03-02 Spray Engineering Co Means for applying coating
US1380866A (en) * 1919-07-09 1921-06-07 Spray Engineering Co Tool for applying coating

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1311760A (en) * 1919-07-29 Means for and method of
US1332544A (en) * 1919-03-08 1920-03-02 Spray Engineering Co Means for applying coating
US1380866A (en) * 1919-07-09 1921-06-07 Spray Engineering Co Tool for applying coating

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589612A (en) * 1969-12-22 1971-06-29 Prismo Universal Corp Modular liquid spray gun
US3815822A (en) * 1971-11-26 1974-06-11 Molins Ltd Adhesive-applying apparatus
US3933312A (en) * 1973-04-26 1976-01-20 Messrs. Demag Kunstofftechnik Gmbh Gating arrangement for the moulding working of plastics formed from a plurality of fluid constituents
US4005685A (en) * 1975-07-29 1977-02-01 Endre Kovacs Fuel injection apparatus
US4124163A (en) * 1976-04-03 1978-11-07 Firma Heinrich Buhnen Kg Relief pressure valve for hot melt adhesive
US4583710A (en) * 1982-05-10 1986-04-22 Cornell Research Foundation, Inc. Electromagnetic valve for pulsed molecular beam
US5129551A (en) * 1987-03-09 1992-07-14 Imperial Chemical Industries Plc Automatic dispensing system for liquids
US5205488A (en) * 1990-03-26 1993-04-27 Lonza Ltd. Process and device for spraying a liquid intermittently, especially a lubricant suspension to be sprayed under high pressure
US5186393A (en) * 1990-12-20 1993-02-16 Fluidyne Corporation On-off valves and pressure regulators for high-pressure fluids
US5297777A (en) * 1990-12-20 1994-03-29 Jetec Company Instant on-off valve for high-pressure fluids
US5524821A (en) * 1990-12-20 1996-06-11 Jetec Company Method and apparatus for using a high-pressure fluid jet
US5799688A (en) * 1990-12-20 1998-09-01 Jetec Company Automatic flow control valve
EP0790080A3 (en) * 1996-02-16 1998-07-22 Nireco Corporation Hot melt applicator and nozzle used therefor
US5924607A (en) * 1996-02-16 1999-07-20 Nireco Corporation Hot melt applicator and nozzle used therefor
US5934521A (en) * 1996-02-16 1999-08-10 Nireco Corporation Hot melt applicator and nozzle used therefor
US20150251208A1 (en) * 2012-10-01 2015-09-10 Heishin Ltd. Discharge system

Also Published As

Publication number Publication date
GB1135101A (en) 1968-11-27
NL6808880A (xx) 1969-12-30
DE1752552A1 (de) 1971-09-16
FR1571747A (xx) 1969-06-20

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