[go: up one dir, main page]

MX2016015115A - Metodo para aplicacion de transferencia por rodillo y dispositivo de aplicacion para un adhesivo de fusion en caliente. - Google Patents

Metodo para aplicacion de transferencia por rodillo y dispositivo de aplicacion para un adhesivo de fusion en caliente.

Info

Publication number
MX2016015115A
MX2016015115A MX2016015115A MX2016015115A MX2016015115A MX 2016015115 A MX2016015115 A MX 2016015115A MX 2016015115 A MX2016015115 A MX 2016015115A MX 2016015115 A MX2016015115 A MX 2016015115A MX 2016015115 A MX2016015115 A MX 2016015115A
Authority
MX
Mexico
Prior art keywords
hot
melt adhesive
pattern
roller
pattern roller
Prior art date
Application number
MX2016015115A
Other languages
English (en)
Inventor
Hidaka Shoji
Sakai Hisashi
Tarumi Seiki
Original Assignee
Sun Tool 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 Sun Tool Corp filed Critical Sun Tool Corp
Publication of MX2016015115A publication Critical patent/MX2016015115A/es

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00Processes for applying liquids or other fluent materials
    • B05D1/28Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0808Details thereof, e.g. surface characteristics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/16Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work
    • B05C1/165Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work using a roller or other rotating member which contacts the work along a generating line
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/10Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284Application of adhesive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207Heat-activated adhesive
    • B32B2037/1215Hot-melt adhesive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00Additional features of adhesives in the form of films or foils
    • C09J2301/30Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/304Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

El propósito de la presente invención es aplicar un adhesivo de fusión en caliente en estado de película delgada sólo a las superficies superiores de proyecciones de rodillos con patrones. Este método para aplicación de transferencia por rodillo, para un adhesivo de fusión en caliente, se caracteriza: en que se proporciona un cabezal aplicador que tiene una ranura en dirección hacia un centro de eje del rodillo que se orienta a una superficie con patrón del rodillo con patrón y, al abastecer el adhesivo de fusión en caliente, el cual se abastece desde un dispositivo para abastecimiento de adhesivo de fusión en caliente, en estado de película delgada, a una superficie superior con patrón del rodillo con patrón y, de esta manera, el adhesivo de fusión en caliente en película delgada sólo se abastece a las superficies superiores de las proyecciones de rodillos con patrones. Este método además se caracteriza por abastecer el adhesivo de fusión en caliente sólo a las superficies superiores de las proyecciones de rodillos con patrones al abrir una válvula para control de abastecimiento de adhesivo de fusión en caliente de tipo encendido apagado, la cual se asocia al cabezal aplicador, cuando una abertura de adhesivo, en la superficie inferior del cabezal aplicador, se orienta hacia las zonas de aplicación en la superficie con patrón del rodillo con patrón. La presente invención tiene el efecto de mantener satisfactoriamente un entorno de trabajo al impedir la contaminación de la periferia del dispositivo.
MX2016015115A 2014-05-17 2014-08-22 Metodo para aplicacion de transferencia por rodillo y dispositivo de aplicacion para un adhesivo de fusion en caliente. MX2016015115A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014102918 2014-05-17
PCT/JP2014/072667 WO2015177943A1 (ja) 2014-05-17 2014-08-22 ホットメルト接着剤のロール転写塗布方法および塗布装置

Publications (1)

Publication Number Publication Date
MX2016015115A true MX2016015115A (es) 2017-05-10

Family

ID=54553633

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2016015115A MX2016015115A (es) 2014-05-17 2014-08-22 Metodo para aplicacion de transferencia por rodillo y dispositivo de aplicacion para un adhesivo de fusion en caliente.

Country Status (8)

Country Link
US (1) US10525501B2 (es)
EP (1) EP3159065B1 (es)
JP (1) JP5828469B1 (es)
CN (1) CN106457298A (es)
AU (1) AU2014394518B2 (es)
MX (1) MX2016015115A (es)
NZ (1) NZ727729A (es)
WO (1) WO2015177943A1 (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190099775A1 (en) * 2017-01-05 2019-04-04 Ulvac, Inc. Roll-to-Roll Deposition Apparatus and Roll-to-Roll Deposition Method
WO2018143445A1 (ja) * 2017-01-31 2018-08-09 株式会社サンツール プリーツ付き複合伸縮部材の製造方法 およびプリーツ付き複合伸縮部材
WO2018154803A1 (ja) * 2017-02-24 2018-08-30 株式会社サンツール トンネル空間を有する複合伸縮部材の製造方法、製造装置およびトンネル空間を有する複合伸縮部材
GB201712726D0 (en) * 2017-08-08 2017-09-20 Landa Labs (2012) Ltd Electric current and heat mitigation in a printing machine writing module
US20200254750A1 (en) * 2017-09-20 2020-08-13 Sun Tool Corporation Roll transfer coating method for thick coating surface
US11691171B2 (en) * 2018-09-03 2023-07-04 Airbus Operations Gmbh System and device for a lacquer transfer
EP3750637A1 (en) 2019-03-29 2020-12-16 Airbus Operations GmbH Device for a lacquer transfer
EP3722009A1 (en) * 2019-03-29 2020-10-14 Airbus Operations GmbH Device and system
EP3725539A1 (en) 2019-03-29 2020-10-21 Airbus Operations GmbH Device for lacquer transfer
EP3722007A1 (en) 2019-03-29 2020-10-14 Airbus Operations GmbH Device for lacquer transfer
EP3733300A1 (en) 2019-04-11 2020-11-04 Airbus Operations GmbH Device for a lacquer transfer
EP3725422B1 (en) 2019-04-12 2025-01-29 Airbus Operations GmbH Device for lacquer transfer
CN110014698A (zh) * 2019-05-08 2019-07-16 梦百合家居科技股份有限公司 一种阻燃面料复合工艺及采用该种方法生产的复合阻燃床垫外套
CN112403806A (zh) * 2019-08-20 2021-02-26 北京卫蓝新能源科技有限公司 一种制备大宽幅超薄金属锂带的凹版涂布装置及其方法
US20220219195A1 (en) * 2021-01-12 2022-07-14 Airbus Operations Gmbh Device for lacquer transfer
CN112934587B (zh) * 2021-01-30 2022-08-26 吉荣家具有限公司 一种在家具表面形成螺纹形荧光线条的装置及其使用方法
US20240033770A1 (en) * 2022-07-27 2024-02-01 Graphic Packaging International, Llc System And Method For Applying A Coating Material To A Web
CN119078202B (zh) * 2024-08-28 2025-04-04 江苏慧雨新材料科技有限公司 一种高速珍珠棉粘合机及其使用方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857231B2 (ja) 1975-06-24 1983-12-19 コニカ株式会社 トフホウホウ
JP2649958B2 (ja) 1988-09-19 1997-09-03 ノードソン株式会社 発泡性溶融体又は発泡性液体の塗布方法とその装置
DE8813801U1 (de) * 1988-11-04 1988-12-22 Röhm GmbH, 6100 Darmstadt Verstellbare Extrusionsschlitzdüse
JPH05161863A (ja) 1991-12-16 1993-06-29 Santsuule:Kk 塗布タイミングマイコン制御式塗布装置
JP3281571B2 (ja) 1996-12-25 2002-05-13 日本ペイント株式会社 ゴム転写ロールを有するロールコーター及びこれを用いた塗装方法
JP3356262B2 (ja) 1997-04-09 2002-12-16 ノードソン株式会社 接着剤塗布方法及び装置
JP3972220B2 (ja) 1997-07-25 2007-09-05 ノードソン株式会社 接着剤のロール転写塗布方法
DE19905934A1 (de) 1999-02-12 2000-08-17 Beiersdorf Ag Verfahren zur Herstellung einer Beschichtung von lösungsmittelfreien Haftklebesystemen auf insbesondere releasebeschichteten Substraten in Verbindung mit einer Vernetzung des Haftklebesystems
US6455152B1 (en) 1999-08-31 2002-09-24 3M Innovative Properties Company Adhesive coating method and adhesive coated article
JP2002045782A (ja) 2000-08-01 2002-02-12 Nordson Kk 接着剤の塗布方法
JP2002273302A (ja) 2001-03-21 2002-09-24 Nordson Kk 縁貼用接着剤塗布ヘッド及び該ヘッドを用いる縁貼用接着剤塗布方法
DE60141387D1 (de) 2001-06-02 2010-04-08 Procter & Gamble Verfahren zum Drucken von Wirkstoffen auf einen Artikel
US7163740B2 (en) * 2001-06-02 2007-01-16 The Procter & Gamble Company Process for printing adhesives, adhesive articles and printing equipment
US6921570B2 (en) * 2001-12-21 2005-07-26 Kimberly-Clark Worldwide, Inc. Pattern unbonded nonwoven web and process for making same
JP2007069125A (ja) 2005-09-07 2007-03-22 Konica Minolta Holdings Inc 塗布装置及び塗布方法
EP2242614A4 (en) * 2007-12-31 2013-01-16 Innopad Inc CHEMICAL MECHANICAL PLANARIZATION CUSHION
US8186296B2 (en) 2010-05-05 2012-05-29 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US8297221B2 (en) * 2010-06-22 2012-10-30 Ortho-Clinical Diagnostics, Inc. Apparatus for slot die setup and control during coating
EP2532332B2 (en) * 2011-06-10 2017-10-04 The Procter and Gamble Company Disposable diaper having reduced attachment between absorbent core and backsheet

Also Published As

Publication number Publication date
EP3159065A1 (en) 2017-04-26
CN106457298A (zh) 2017-02-22
EP3159065A4 (en) 2017-12-27
US10525501B2 (en) 2020-01-07
AU2014394518B2 (en) 2018-09-27
JP5828469B1 (ja) 2015-12-09
AU2014394518A1 (en) 2017-01-12
JPWO2015177943A1 (ja) 2017-04-20
WO2015177943A1 (ja) 2015-11-26
US20170080454A1 (en) 2017-03-23
NZ727729A (en) 2017-11-24
EP3159065B1 (en) 2020-05-27

Similar Documents

Publication Publication Date Title
NZ727729A (en) Roller transfer application method and application device for hot-melt adhesive
MX2018004534A (es) Metodo para suministrar una lamina continua de sustrato formador de aerosol desde una bobina y un articulo generador de aerosol.
SG11201805655VA (en) Method and device for bonding substrates
MX367044B (es) Sistemas y metodos de control de calentamiento en fabricacion aditiva.
IL262861A (en) A device for treating the surface of a substrate
EP3683022A4 (en) DEVICE AND METHOD FOR CONTROLLING A COOPERATIVE ROBOT
SG11201907720RA (en) Method for the alignment of two substrates
EP3544549A4 (en) WIRELESS GUIDED TRANSSEPTAL RELEASE SYSTEM FOR THERAPEUTIC DEVICES OF THE MITRAL VALVE
EP3603711A4 (en) OXYGEN SUPPLY DEVICE AND METHOD FOR CONTROLLING THE SAME
SG11202007783XA (en) Power supply apparaus for electrostatic chuck and substrate control method
PL3454996T3 (pl) Układ dozowania materiału na podłoże z zaworem elektromagnetycznym jednostki dozującej z napędem pneumatycznym
EP3744528B8 (en) Print liquid supply
TW201614082A (en) Edge exclusion mask, and method and apparatus for layer deposition on substrate by using the same
FI20146132A7 (fi) Suutinpää, laitteisto ja menetelmä substraatin pinnan pinnoittamiseksi
IL284079A (en) A system for the controlled deposition of a liquid on a substrate
PT3315209T (pt) Sistema para a aplicação de revestimentos com função de superfície que atuam temporariamente por meio de pulverização
EP3681259A4 (en) WORKING MACHINE FOR SUBSTRATES
EP3644702A4 (en) DEVICE FOR CARRYING OUT WORK ON A SUBSTRATE
WO2017182511A3 (de) Applikationsbasierte steuerung einer ventilscheibe
MX394758B (es) Composición y método para el tratamiento de nematodos.
PL2985084T3 (pl) Proces powlekania korpusu podłoża
EP3341958B8 (de) Vorrichtung zum aufbringen eines mit uv-strahlung beaufschlagten flüssigen mediums auf ein substrat
EP3664272A4 (en) POWER SUPPLY DEVICE AND METHOD OF CONTROLLING THE POWER SUPPLY DEVICE
EP3954397A4 (en) DEVICE FOR FOG GENERATION
EP3233502A4 (en) Valves for printing fluid supply systems