AU670070B2 - Creación de Inventos y Patentes con Inteligencia Artificial

AU670070B2 – Endless belt-shaped element forming in particular a press-blanket
– Google Patents

AU670070B2 – Endless belt-shaped element forming in particular a press-blanket
– Google Patents
Endless belt-shaped element forming in particular a press-blanket

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Publication number
AU670070B2

AU670070B2
AU36782/93A
AU3678293A
AU670070B2
AU 670070 B2
AU670070 B2
AU 670070B2
AU 36782/93 A
AU36782/93 A
AU 36782/93A
AU 3678293 A
AU3678293 A
AU 3678293A
AU 670070 B2
AU670070 B2
AU 670070B2
Authority
AU
Australia
Prior art keywords
layer
endless belt
belt
fibers
innermost
Prior art date
1992-04-10
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
AU36782/93A
Other versions

AU3678293A
(en

Inventor
Helene Biava
Denis Hertzog
Christian Reinhart
Gerard Rich
Jean Francois Van Den Bogaert
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.)

MacDermid Graphics Solutions Europe SAS

Original Assignee
Rollin SA
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.)
1992-04-10
Filing date
1993-04-08
Publication date
1996-07-04
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«Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1993-04-08
Application filed by Rollin SA
filed
Critical
Rollin SA

1993-10-14
Publication of AU3678293A
publication
Critical
patent/AU3678293A/en

1996-07-04
Application granted
granted
Critical

1996-07-04
Publication of AU670070B2
publication
Critical
patent/AU670070B2/en

2008-04-24
Assigned to MACDERMID PRINTING SOLUTIONS EUROPE SAS
reassignment
MACDERMID PRINTING SOLUTIONS EUROPE SAS
Request to Amend Deed and Register
Assignors: ROLLIN S.A.

2013-04-08
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Critical

Status
Ceased
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Current

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Classifications

B—PERFORMING OPERATIONS; TRANSPORTING

B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS

B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM

B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing

B41N10/02—Blanket structure

B41N10/04—Blanket structure multi-layer

B—PERFORMING OPERATIONS; TRANSPORTING

B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS

B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM

B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings

B41N2210/06—Backcoats; Back layers; Bottom layers

B—PERFORMING OPERATIONS; TRANSPORTING

B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS

B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM

B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings

B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds

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

Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10S101/00—Printing

Y10S101/48—Endless printing belt for other than selective or progressive printing

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10S428/00—Stock material or miscellaneous articles

Y10S428/909—Resilient layer, e.g. printer’s blanket

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]

Y10T442/30—Woven fabric [i.e., woven strand or strip material]

Y10T442/3707—Woven fabric including a nonwoven fabric layer other than paper

Y10T442/378—Coated, impregnated, or autogenously bonded

Y10T442/3813—Coating or impregnation contains synthetic polymeric material

Abstract

The present invention relates to an element in the form of an endless belt forming, in particular, a textile printing blanket. The element, of the type comprising a roller layer (4) associated with at least one working layer (8) is characterised in that only the roller layer (4) has a high characteristic of longitudinal rigidity, lying between approximately 10<6> and 10<7> newtons per metre. The invention finds an application in the field of textiles.

Description

AUSTRALIA
Patents Act COMPLETE SPECIFICATION
(ORIGINAL)
Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority Related Art: Name of Applicant: Rollin S.A.
Actual Inventor(s): Helene Biava Denis Hertzog Christian Reinhart Gerard Rich Jean Francois Van Den Bogaert Address for Service: PHILLIPS ORMONDE FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melbourne 3000 AUSTRALIA Invention Title: ENDLESS BELT-SHAPED ELEMENT FORMING IN PARTICULAR A
PRESS-BLANKET
Our Ref 324948 POF Code: 90766/38794 The following statement is a full description of this invention, including the best method of performing it known to applicant(s): 1 I; «tEndless belt-shaped element forming in particular a presz-blanket» The present invention relates to an endless belt-shaped element forming in particular a textile printing press-blanket.
Textile printing machines are known, generally an endless cloth or belt surrounding two cylinders one of which is rotated so as to drive the endless belt at a constant speed and above whioh belt are arranged successive printing means adapted to print patterns with different colors upon a web of fabric driven by the, endless belt and held in sandwich-like relationship between this belt and the printing means.
The tuxtile printing cloth has a sandwich-like structure consisting of’ several more or less thick’ C layers of different materials to allow the printing of 15 the fabric resting upon the belt through compression of the printing means upon the fabric.
*The different composite structures of textile printing clothes howeve r which have been designed until V now have not given full satisfaction. These known 20 structures indeed impart to the cloth a somewhat variable elauticity causing an irregularity in the travellitg speed of the cloth. It then results therefrom an «offset» or «registering inaccuracy» of the colored a 0 6 4patterns printed in overlying relationship by the successive printing means upon the fabrics disposed onto t ~the printing cloth 4$ ~Such a registering inaccuracy may amount to several tenths of a millimetre which is detrimental to the quality of the fabric., As a matter of fact a registring inaccuracy greater than t0.1 mm (shift of ‘two colors) becomes visible with very «registering» printed designs and may cause the production carried out on the machine A t t be rejected in extreme cases.
The purpose of the invention is therefore to provide an endless textile printing cloth or belt with a composite structure such that the registering inaccuracy on the fabric be reduced to as low a value as possible not exceeding in any case about one tenth of a millimetre.
The invention provides an endless belt-shaped element for printing textiles, comprising: an endless belt shaped to surround two textile printing machine cylinders, the endless belt having an innermost layer for disposition against the textile printing machine cylinders and at least one outer elastomer layer, said innermost cylinder layer comprising belt rigidity enhancing means, said belt rigidity enhancing means including a sheet of iongitudinally oriented fibers and having a longitudinal rigidity between 106 and 10 7 Newtons per meter.
t In a further aspect the invention provides an endless belt-shaped element for printing textiles, comprising: a belt having a sandwich structure conformed for :1t 5 mounting around two textile printing machine cylinders, said sandwich structure comprising belt rigidity enhancing means, said belt rigidity enhancing means including an innermost sheet layer of fibers made from a material selected from 4,»4 the group consisting of polyester, polyamide, polyethylene, glass, and metals, said fibers being oriented longitudinally within the belt, said innermost layer having a rigidity in the longitudinal direction of 106107 Newtons per meter; and at 9 44 least one elastomer layer superimposed upon the outer surface of said innermost t sheet layer of longitudinal fibers.
j I R lb (LV I -2to be rejected in extreme cases, The purpose of the invention is therefore to prov e an endless textile printing cloth or belt th a composite structure such that the registeri naccuracy on the fabric be reduced to as low av ue as possible not exceeding in any case abo one tenth of a millimetre, For this purpose the i ntion relates to an endless belt-shaped drive ele t adapted to co-operate with at least one drive linder and of the type comprising a cylinder la associated with at least one working layer a which is characterized in that the cylinder la~ only has a high longitudinal rigidity oharacteristio.
The longitudinal rigidity of the aforesaid cylinder 6 7 layer has. a value lying between about 10 and 10 Newtons per metre preferably between 1.5 and 11 6 2.5 x 10 N/m.
20 a sheet of threads and/or of longitudinal fibres of monofilaments made from a polyester-, polyamide-, i 4 polyethylene-, aramide-, glass-, carbon-, metal-based A material or the like.
According to an alternative embodiment the aforesaid cylinder layer consists of a sheet of threads and/or of longitudinal fibres each one consisting of multifilaments made from a polyester-, polyamide-, polyethylene-, aramide-, glass-, carbon-, metal-based material or the like.
According to still another alternative embodiment .,’the cylinder layer consists of a sheet of threads and/or of longitudinal fibres formed of both monofilaments and multifilaments of the same material or of different materials with a polyester, polyamide, polyethylene, aramide, glass, carbon, metal base or the like.
The aforesaid multifilaments of each longitudinal p© -3thread and/or fibre of the cylinder layer are made from the same material or from different materials.
The element Ln addition comprisues one or several intermediate layers held in sandwich-like fashion between the working layer and the cylinder layer and contributing to the transverse, tensile and bending rigidity of the element.
The’transverse tensile stiffness of the intermediate layer,(s) is lying between about 104 and 10 N/m and the transverse bending stiffness of this layer or of these layers is at least 0.05 N.m/radian.
According to a first embodiment the element comprises two intermediate layers consisting of a sheet of threads and/or of transverse fibres of monofilaments and of a layer of elastomer for connection between the sheet of threads and/or of transverse fibres and the cylinder layer.
According to a second embodiment the element comprises an intermediate layer consisting of a sheet of 20 threads and/or of transverse fibres of monofilaments.
According to a third embodiment the -element comarises three intermediate sheets consisting successively towards the working layer of a sheet of threads and/or of transverse fibres of monofilaments, of a connecting layer of elastomer and of a cloth with a small modulus of .elasticity in the longitudinal direction and consisting of threads and/or of transverse fibres of monofilaments joined to each other by flexible ootton or polyester threads above and below the said 30 fibres and/or threads.
According to a fourth embodiment the element comprises three intermediate layers consisting successively towards the working layer of a sheet of threads and/or of transverse fibres each one consisting of multifilaments, of a connecting sheet of elastomer and of a cloth with a small modulvs of elasticity in the -4 longitudinal direction and consisting of threads and/or of transverse fibres of monofilaments joinled toOone another by flexible cotton or polyester threads above and below the said fibres and/or threads.
According to a fifth embodiment the element comprises three intermediate layers consisting successively towards the working layer of a sheet of threads and/or of transverse fibres of monofilaments, of a connecting layer of elastomer and of a balanced cloth with yielding threads in both transverse and longitudinal directiona made from cotton or from polyester.
The threads and/or aforesaid transverse fibres are made from a polyester-, polyamide-, polyethylene-, glass-, carbon-, metal-based material or the like.
The threads and/or longitudinal fibres of the cylinder layer and the threads and/or transverse fibres of the aforesaid intermediate layers are impregnated with elastomer.
Furthermore at least ‘one of the intermediate layers may consist of a sheet of threads and/or transverse fibres formed of both monofilaments and multifilaments of the same material or of different materials with a polyester, polyamide, polyethylene, glass, carbon, wmtal base or the like.
The multifilaments of each thread and/or transverse fibre of the Intermediate layer are made from the same material or from different materials.
The cylinder layer has a thickness lying between about 0.2 and 1.5 millimetre, preferably between about 0.3 and 0.9 millimetre, the working layer has a I thickness lying between about 0.1 and 1.0 millimetre, preferably between about 0.5 and 0.7 millimetre and the total thickness of the element is lying between about 1.5 and 4~ millimetres, preferably between about 1.9 and 2.8 millimetres.
The working layer is made from an elastomer with a Young’s modulus lying between about 1.0 and 500 Megapascals (MPa), preferably between 5 and 100 MPa.
The aforesaid different layers of the element are connected to each other by se2lf-adhesion or by adhesive bonding agents.
The invention will be better understood arnd further objects, characterizing features, details and advantages thereof’ will appear more clearly in the course of the explanatory description which will follow, made with reference to the accompanying diagrammatic drawings given by way of example only, illustrating several embodiments of’ the invention and in which *-Figure 1 diagrammatically shows an endless belt-shappd element adapted to form a textile printing blanket -Figure 2 is a view in cross-section along the line II-11 of’ Figure 1, showing a composite structure of’ the S. element according to a preferred embodiment of the invention -Figures 3, 4IA, 4B, 5A, 5B and 6 are views in ,section similarto that ofFigure 2 and showing further embodiments of’ the element according to the invention,*; -Figure 7 diagrammatically illustrates a machine allowing to measure with a great accuracy the value of the registering inaccuracy resulting from the use of the printing blanket according to the invention in comparison with known printing blankets -Figure 8 shows two curves of the variation of the registering inaccuracy resulting from the use of two j~ conventional textile printing clothes and -Figure 9 shows two curves of’ variation Of’ the registering inaccuracy resulting from the use of two textile printing clothes, respectively, aooor4 ag to the invention.
Referring to Figure 1 t he reference numeral 1 designates an endless strip, in particular a belt adapted to carry along a fabric having to receive successive printings, surrounding two cylinders 2, 3, one of’ which, for example the cylinder 2, is rotated so that the belt 0- be driven at a constant speed in a longitudinal direction shown by the arrow A.
The belt 1 or textile printing cloth forms a part of a textile printing machine known per se, comprising, arranged above the belt 1, cylinders or flat frames forming successive printing means which may print patterns of different colors upon a web of fabric carried along by the belt 1 The belt or cloth 1 is obtained in an endless configuration by a junction provided on a reduced -area which does not cause any deterioration from. the standpoint of performances. This junction is a means know~n per se and narried out either-* .4 on the location of the machine or in the factory workshop producing clothes prior to the mounting on the .o machine.
The belt or cloth 1 is a critical component for the 0 C quality of the printed fabrio and should thus has a 4 4 1 *sandwich-like structure conzisting of several layersI allowing to reduce the registering inaccuracy previouslyA a» discussed to as small a value as possible.
F’or that purpose and according to the invention the sandwich-like structure of the belt or cloth 1 is defined in a general manner by the following different *441 essential layers -a lower layer or cylinder layer providing an exclusive contribution to the longitudinal or *o ircumferential rigidity in the direction A, the %got’ exclusivity technioally corresponding to the fact that the other layers taken separately or all together as a whole are ontribitinS in a negligeable manner to this .35 rigidity -an outer layer or working layer upon which is -7arranged the fabric to be printed and having chemical I and mechanical characteristics adapted to the process of textile ‘printing, i.e. with chemical and/or mechanical properties consistent with the products of printing, of surface flexibility, of non-marking of the printed fabric by the subjacent reinforcing layers which are not homogeneous and of resistance to shooks, to scratches and to abrasion; and -one or several intermediate layers together providing the transverse tensile rigidity of the belt or cloth 1 in the direction B perpendicular to the *direction A and the bending rigidity or degree of freedom of rotation about the longitudinal axis of the belt 1 as shown by the arrow shaped as an arc of a circle C. The intermediate layers also form connecting The rigidities in the directions A and B are defined as being the quotient of the tension of the belt (expressed in N/in) by the elongation thereof expressed 4 20 as a percentage.
The rigidity of the cylinder layer in the direction A has a value lying between about 106 and 10~ Newtons per meter (WOn of cloth width, this rigidity corresponding to an elongation of 0.1 to 1% under a tension of 100 Newtons per centimetre of cloth width.
Preferably the rigidity has a value lying betweeri *and 2.5×10 6 N/rn. The cylinder layer -has a thickness lying between about 0.2 and 1.5 millimetre and preferably lying between 0.3 and 0.9 millimetre.
TheYO working layer is made from an elastomer~ with a Youg’smodulus lying between about 1.0 and 500 Hegapascals (NPa) and preferably between 5 and 100 MPa.
The thickness of the working layer is lying between about 0.1 and 1.0 millimetre and is preferably lying between 0.5 and 0.7 millimetre.
The intermediate layer(s) which is or are -8collectively providing the stiffness of the belt 1 in the directions B and C as .,ll as the connection between the assembly of layers of the belt has or have a transverse tensile rigidity in the direction B lying between about 10 4 and 108 N/m• Preferably this rigidity is lying between 105 and 5 x 106 N/m. The rigidity of the intermediate layer(s) in the direction C preferably is higher than 0.05 N.m/radian per metre of cloth length. This cloth rigidity corresponds to the produot of multiplication of the Young’s modulus E by the inertia I with a homogeneous beam. The limit value corresponds to a, deflection camber, due to the own weight of the cloth of 2.5 kg/m, of 6.25 millimetres for an overhang of 10 centimetres and to a deflection camber of 10 centimetres for an overhang of centimetres.
The aggregate thickness of the belt or cloth 1 is lying between 1.5 and 4 millimetres and is preferably lying between 1.9 and 2.8 millimetres.
The different embodiments .of the belt or cloth 1 the different layers of which have the operating characteristics referred to hereinabove will now be described successively.
F 25 According to the preferred ‘embodiment shown on Figure 2 the sandwich structure of the belt 1 comprises a cylinder layer 4 consisting of a sheet of threads .»ti and/or of longitudinal fibres 5 oriented in the direction A and each one formed of a monofilament made from a polyester-, polyamide-, polyethylene-, glass-, metal-based material or the like, a connecting layer of elastomer 6 of 0.7 millimetre of thickness disposed over the cylinder layer 4, a layer 7 consisting of a sheet of threads and/or of transverse fibres of monofilaments in the direction B with a thickness of 0.35 millimetre and mads from a polyester-, polyamide-, polyethylene-,
.I
-9glass-, metal-based material or the like and a working layer of elastomer 8 with a thickness of 0.6 millimetre.
The cylinder layer 4 has a thickness of 0.35 millimetre so that the aggregate thickness of the belt I is 2 millimetres. The layers 6 and 7 are of course forming the intermediate connecting layers with properties with transverse tensile and bending rigidities such as defined previously.
According to a secoad embodiment shown on Figure 3 the belt I comprises three layers wherein the cylinder layer 9 and the single intermediate layer 10 are combined together to form a technical fabric with a weave such as a grate, Malimo (registred trademark), Rachel (registered trademark), the cylinder layer 9 consisting of threads and/or of longitudinal fibres 11 with a longitudinal rigidity such as set forth previously, each one formed of multifilaments made from a polyester-, polyamide-, polyethylene-, aramide-, glass-, carbon-, metal-based material or the like, various combinations of materials forming the fibres 11 t being possible. The intermediate layer 10 with the transverse tensile and bending rigidities such as previously defined consists of a sheet of threads and/or of fibres of monofilaments with a diameter of 0.35 millimeter oriented in the transverse direction B and made from a polyester-, polyamide-, polyethylene-, glass-, carbon-, metal-based material or the like. The threads and/or longitudinal fibres 11 are assembled to 4″ each one of the monofilaments of the layer 10 through the medium of fine threads of polyester 12 or the like wound about each monofilament and playing no operating part. The working layer of elastomer 13 has a thickness of 0.85 millimetre whereas the cylinder layer 9 has a thickness of 0.87 millimetre so that the aggregate thickness of the belt 1 be 2.07 millimetres.
The sandwich structure of the belt 1 forming the third embodiment of the invention shown on Figure 14A comprises five layers wherein the cylinder layer 9 and the adjacent intermediate layer 10 are identical with the layers 9 and 10 of the second embodiment with however the cylinder layer 9 having a thickness of 0.82 Imillimeter and the threads and/or fibres of’ and 10 have a total thickness of 1.17 millimetre. This belt str’ucture also comprises two other intermediate layers arranged between the intermediate layer 10 arnd the working layer 13 and comprisinS a connecting layer of elastomer 14 with a thickness of’ 0. 18 millimetre and a layer 15 consisting of a cloth with a small modulus of elasticity in the longitudinal direction, consisting of threads apd/or of tratr13verse fibres of monofilament3 16 and of flexible cotton or polyester threads 17 joining the fibres 15 while ‘extending above and below the latter. The threads and/or transverse fibres 16 are made 1 20 from a polyester-, polyamide-, polyethylene-, glass-, carbon-, metal-based material or the like. The three Iintermediate layers 10, 14, 15 are of course 1 contributing to thle transverse tensile and bending rigidity as mentioned previously. The threads and/or 125 fibres of monofilaments of the layer 15 have a diameter of 0.25 millimetre, the working layer 13 has a thickness of 0.55 millimetre so that the total thickness of the belt 1 is 2.15 millimetres. The composite structure shown on Figure 1 3 is s~imilar to that of Figure 41A t 30 except for the sheet of the layer 9 formed of threads and/or fibres with monofilaments 11.
.1~Y ,~,Figure 5A shows the fourth -embodiment of the belt 1 copiigfvelyrAih prtn haattitc copisn fielyr ihoeatn hrcoit tttg identical with those of the five layers of the embodiment shown on Figure 4A. This fourth embbdiment differs from the one of Figure 4A only by the layer -11consisting of a sheet of threads and/or of transverse fibres of multifilaments oriented in the direction B.
Accrding this embodiment the layer 9 has a thickness of 0,82 rl limetre, the layer 10 has a thickness of 0.22 millimetre, the layer of elastomer 14 has a thickness of 0.15 millimetre, the layer 15 has a thickness of 0.39 millimetre and the working layer 13 has a thickness of 0.6 millimetre thereby leading to a total thickness of the belt 1 of 2.18 millimetres. The composite structure 1o shown on Figure 5B is similar to that of Figure except for the sheet of the layer 9 formed of threads and/or fibres with monofilaments 11.
The fifth embodiment shown on Figure 5 illustrates a structure with five layers of the belt I comprising three intermrdiate layers interposed between the cylinder layer 9 and the working layer 13 identical with the Qylinder layer 9 and with the working layer 13, respectively, of the embodiment of Figure 4 except for the thickness of the layer 9 in the present case of 0.8 :,20 millimetre for a total thickness of the layers 9 and of 1.1 millimetre. The three intermediate layers successively comprise from the cylinder layer 9 to the it working layer 13 the layer 10 formed of a sheet of threads and/or of fibres of monofilaments in the direction B identical with the sheet of the layer* 10 of Figure 4, a connecting layer of elastomer 14 with a thickness of 0.25 millimetre and a layer 18 formed of a balanced cloth with a thickness of 0.40 millimetre with flexible threads 19, 20 in both transverse and 30 longitudinal directions of the belt 1 and made from cotton, polyester or the like. The working layer 13 has as in the embodiment of Figure 4 a thickness of 0.55 millimetre thereby resqlting in a total thickness of the belt I of 2.30 millimetres. 0 Further embodiments of the composite structure of the cloth 1 may be contemplated. Thus each zheet of -12threads and/or of fibres of the cylinder laver and/or of the intermediate layer may be formed of both monofilaments and multifilaments of the same material or of different materials. Moreover the multifilaments of each thread and/or longitudinal and/or transverse fibre mentioned hereinabove may be made from the same material or from different materials.
The threads and/or longitudinal and transverse fibres with multifilaments or with monofilaments of the layers of the different embodiments described hereinabove are impregnated with elastomer. The different layers of the embodiments of the belt 1 are connected to each other by self-adhesion or by means of adhesive bonding agents.
It should furthermore be pointed out that the values of the thicknesses of the cylinder and intermediate layers defined in the different embodiments referred to hereinabove are given in the case where the threads and/or fibres forming these layers are made from 20 polyester, it being understood that different values of thicknesses will be adopted when these threads and/or fibres will be made from a different material.
The composite structure of the belt I forming a textile printing blanket such as defined in each one of the embodiments shown on Figures 2 to 6 would substantially decrease the value of registering inaccuracy the variations of which versus the development of the cloth are always smaller than one tenth of a millimetre as this’appears from Figure 9.
More specifically two of the embodiments of the belt namely those shown on Figures 4A and 5A have been tested by way of example ‘in comparison with two belts forming conventional textile printing blankets, the test results of which are hown on Figure 8.
The machine which has been used to control the different printing blankets referred to hereinabove is -13diagrammatically shown on Figure 7 and has already been described in detail in the Frennih patent application N* 91 02 0141 filad on February 20, 1991 in the name of the applicant.
This contr’ol machine compri.ses two cylinders 21, 22 one 21 of which is rotated by a motor 23 so as to drive the belt 1 to be tested according to the arrow F. An encoder 24 is mechanically connected to the shaft of the motor 23 and electrically connected by a wiring 25 to two systems 26, 27 for the injection of a colorant such as ink and to a videocamera 28. A computer 29 is connected to the videocamera 28 and allows the computation of the regi’stering inaccuracy involved by the belt 1.
For that purpose a strip of adhesive film (not shown) is stuck onto the endless belt to be tested 1 In order to serve as a printing support for the ink drops issuing from the injection systems 26, 27. It should be noted that the encoder 214 gives the order to the o 020 injection systems 26, 27 for each displacement pi of the belt 1 to simultaneously print a drop a, b onto the V cloth 1, whereafter the registering inaccuracy generated *#:too by the irregularities of the belt will be controlled by 0 the camera 28 downstream of the injection system 27.
More specifically the deviations X between two V, drops a, b are measured by the camera 28 and each *deviation value between two drops is stored in the computer 29.
if .:.The computer 29 would calculate the mean of the 30 different deviations Ximeasured by the camera 28, ioet: ~n 1/n x.
-14- The computer 29 then effects the difference between the deviation X i instantly measured by the camera 28 and the aforesaid mean of ‘the deviations X to yield the value d of the registering inaccuracy, i.e. di =xi The screen of the computer 29 will thus visualize as a curve the different values of di according to the position of the belt to be tested 1.
On Figure 8 ‘are thus seen two curves C1 and C2 illustrating the values of the registering inacciraoies of two conventional textile printing clothes versus the distance along each belt or cloth 1. These curves have been obtained from the following parameters -the distance L between both injection systems 26, 27 l 3 meters
I
-the distance between two measuring points, i.e.
ebetween two successive drops a and b 0.5 meter and 20 -the tension of the belt 1 3.5 kg/cm.
It is thus found according to the curve C1 obtained that the measured registering inaccuracy varies between a negative value of about -0.10 millimetre and a positive value of about 0.20 millimetre whereas 25 according to the curve C2 the measured registering t inaccuracy varies between about -0.3 mm and +0.6 mm, which values are detrimental to the appearance of the ?1 printed fabric.
o On the contrary the curves C3 and C4 illustrated on Figure 9 show that the values of the registering 1 inaccuracy vary between t0.08 millimetre (curve C3) for *,44 the belt I forming the subject of the embodiment of 44 Figure 4A (distance L between injection systems 26, 27 of 5 metres, distance between two measuring points of 0.5 metre and belt tension of 3.5 kg/cm) and botween
N-
V+0.05 millimnetre (curve C 1 4) for the belt I forming the subject of the embodiment shown on F’igure 5A (distance L of 5 metres, distance between two measuring points of metre and belt tension of 3.5 kg/cm).
There has therefore been provided according to the invention -a belt formiing a textile printing blanket achieving a register~ing ,naccuracy of’ an extremely reduced value owing in particular to the relatively high longitudinal rigidity property of the cylinder layer.
The invention is of’ course not limited to a textile printing blanket only but is also applicable to any type of endless belt intended to accurately transport or carry along particular parts on objects without any registering inaccuracy.

Claims (18)

1. An endless belt-shaped element for printing textiles, comprising: an endless belt shaped to surround two textile printing machine cylinders, the endless belt having an innermost layer for disposition against the textile printing machine cylinders and at least one outer elastomer layer, said innermost cylinder layer comprising belt rigidity enhancing means, said belt rigidity enhancing means including a sheet of longitudinally oriented fibers and having a longitudinal rigidity between 106 and 107 Newtons per meter.

2. The endless belt-shaped element of claim 1 wherein said innermost layer has a longitudinal rigidity of 1.5×10 6 Newtons per meter to 2.5×10 6 Newtons per meter.

3. The endless belt-shaped element of claim 1 or claim 2 wherein said sheet of longitudinal fibers comprise monofilaments selected from the group consisting of polyester, polyamide, polyethylene, aramide, glass, carbon fibers, and metals. 15

4. The endless belt-shaped element of any one of claims I to 3 wherein said innermost layer comprises a sheet of longitudinal fibers, each one consisting of multi-filaments selected from the group consisting of polyester, polyamide, polyethylene, aramide, glass, carbon fibers and metals.

The endless belt-shaped element of any one of the previous claims wherein the innermost layer comprises a sheet of longitudinal fibers formed of both monofilaments and multi-filaments.

6. The endless belt-shaped element of any one of the previous claims further comprising at least one intermediate layer between said outer layer and said innermost layer.

7. The endless belt-shaped element of any one of the previous claims further comprising an intermediate layer between said innermost and outer layers, said intermediate layer comprising fibers.

8. The endless belt-shaped element of claim 7 wherein said intermediate layer is connected to said innermost sheet of longitudinal fibers.

9. An endless belt-shaped element for printing textiles, comprising: a belt having a sandwich structure conformed for rounting around two textile printing Smachine cylinders, said sandwich structure comprising belt rigidity enhancing JL_ ~r -L I j means, said belt rigidity enhancing means including an innermost sheet layer of fibers made from a material selected from the group consisting of polyester, polyamide, polyethylene, glass, and metals, said fibers being oriented longitudinally within the belt, said innermost layer having a rigidity in the longitudinal direction of 106-107 Newtons per meter; and at least one elastomer layer superimposed upon the outer surface of said innermost sheet layer of longitudinal fibers.

The endless belt-shaped element of claim 9 wherein said belt has at least one intermediate layer between said elastomer layer and said innermost sheet layer having longitudinal fibers.

11. The endless belt of claim 10 wherein said at least one intermediate layer comprises transverse fibers.

12. The endless belt of claim 11 wherein said at least one intermediate layer is connected to said innermost sheet layer of longitudinal fibers. 15

13. The endless belt of claim 11 wherein said transverse fibers are made of 6* 0 material selected from the group consisting of polyester, polyamide, polyethylene, glass, carbon, and metal. 0,

14. The endless belt of claim 13 wherein said longitudinal fibers of said !innermost sheet layer of fibers are comprised of monofilaments or multifilaments.

15. The endless belt of claim 9 further comprising a cloth layer.

16. The endless belt of claim 9 further comprising a cloth layer comprising threads in transverse and longitudinal directions.

17. The endless belt of claim 9 wherein one of said layers has a modulus between 1.0 and 500 megapascals,

18, The endless belt-shaped element of claim 1 or claim 9 substantially as herein described with reference to the drawings. DATED: 1 May, 1996 ROLLIN S.A, By their Patent Attorneys PHILLIPS ORMONDE FITZPATRICK (1 o- 1,, L j 1% 4 1. -1 _11 11 ABSTRACT The present invention relates to an endless belt-shaped element for printing textiles, comprising: an endless belt shaped to surround two textile printing machine cylinders the endless belt having an inner cylinder layer and at least one outer elastomer layer(8;13), said inner cylinder layer comprising a sheet of longitudinally oriented fibers and having a longitudinal rigidity of 106-10 Newtons per meter. It t 4 (il 3 39 SGD

AU36782/93A
1992-04-10
1993-04-08
Endless belt-shaped element forming in particular a press-blanket

Ceased

AU670070B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

FR9204452

1992-04-10

FR9204452A

FR2689815B1
(en)

1992-04-10
1992-04-10

ENDLESS BAND-SHAPED ELEMENT IN PARTICULAR PRINTING BLANCHET

Publications (2)

Publication Number
Publication Date

AU3678293A

AU3678293A
(en)

1993-10-14

AU670070B2
true

AU670070B2
(en)

1996-07-04

Family
ID=9428753
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU36782/93A
Ceased

AU670070B2
(en)

1992-04-10
1993-04-08
Endless belt-shaped element forming in particular a press-blanket

Country Status (10)

Country
Link

US
(1)

US5456171A
(en)

EP
(1)

EP0565457B1
(en)

JP
(1)

JPH0681243A
(en)

KR
(1)

KR0139186B1
(en)

AT
(1)

ATE159895T1
(en)

AU
(1)

AU670070B2
(en)

DE
(1)

DE69314987T2
(en)

ES
(1)

ES2111721T3
(en)

FR
(1)

FR2689815B1
(en)

SG
(1)

SG47892A1
(en)

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1993

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AU
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not_active
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1993-04-09
AT
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IP Right Cessation

1993-04-09
DE
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patent/DE69314987T2/en
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1993-04-09
SG
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patent/SG47892A1/en
unknown

1993-04-09
ES
ES93400945T
patent/ES2111721T3/en
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1993-04-09
EP
EP93400945A
patent/EP0565457B1/en
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Expired – Lifetime

1993-04-10
KR
KR1019930006071A
patent/KR0139186B1/en
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IP Right Cessation

1993-04-12
JP
JP10890993A
patent/JPH0681243A/en
active
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Also Published As

Publication number
Publication date

AU3678293A
(en)

1993-10-14

JPH0681243A
(en)

1994-03-22

EP0565457B1
(en)

1997-11-05

US5456171A
(en)

1995-10-10

FR2689815B1
(en)

1996-05-15

DE69314987D1
(en)

1997-12-11

KR930021381A
(en)

1993-11-22

DE69314987T2
(en)

1998-05-28

SG47892A1
(en)

1998-04-17

FR2689815A1
(en)

1993-10-15

KR0139186B1
(en)

1998-04-28

ATE159895T1
(en)

1997-11-15

EP0565457A1
(en)

1993-10-13

ES2111721T3
(en)

1998-03-16

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