CA1232521A - Polymeric product having a fabric layer means and method of making the same - Google Patents
Polymeric product having a fabric layer means and method of making the sameInfo
- Publication number
- CA1232521A CA1232521A CA000450849A CA450849A CA1232521A CA 1232521 A CA1232521 A CA 1232521A CA 000450849 A CA000450849 A CA 000450849A CA 450849 A CA450849 A CA 450849A CA 1232521 A CA1232521 A CA 1232521A
- Authority
- CA
- Canada
- Prior art keywords
- layer
- polymeric
- thread
- layers
- disposed
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/10—Driving belts having wedge-shaped cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/04—V-belts, i.e. belts of tapered cross-section made of rubber
- F16G5/06—V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
- F16G5/166—V-belts, i.e. belts of tapered cross-section consisting of several parts with non-metallic rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2433/00—Closed loop articles
- B32B2433/04—Driving belts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Woven Fabrics (AREA)
- Decoration Of Textiles (AREA)
- Materials For Medical Uses (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Polymerisation Methods In General (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
TITLE OF THE INVENTION:
POLYMERIC PRODUCT HAVING A FABRIC LAYER
MEANS AND METHOD OF MAKING THE SAME
ABSTRACT OF THE DISCLOSURE
A polymeric product having a fabric layer, and a method of making the same are provided. The fabric layer is provided with opposed sides and at least one polymeric part secured to the fabric layer. The fabric layer comprises a first substantially planar layer of threads disposed in superimposed relation with a second substantially planar layer of threads, whereby the threads of the first layer are not woven with the threads of the second layer. The polymeric part is effectively the sole securement that secures the threads of the first layer to the threads of the second layer, and thereby imparts its flexible characteristic to the securement between the threads of the first and second layers.
POLYMERIC PRODUCT HAVING A FABRIC LAYER
MEANS AND METHOD OF MAKING THE SAME
ABSTRACT OF THE DISCLOSURE
A polymeric product having a fabric layer, and a method of making the same are provided. The fabric layer is provided with opposed sides and at least one polymeric part secured to the fabric layer. The fabric layer comprises a first substantially planar layer of threads disposed in superimposed relation with a second substantially planar layer of threads, whereby the threads of the first layer are not woven with the threads of the second layer. The polymeric part is effectively the sole securement that secures the threads of the first layer to the threads of the second layer, and thereby imparts its flexible characteristic to the securement between the threads of the first and second layers.
Description
3Z 3~
ack,,round of Ihe Invention 1. yield of the Invention Tl-.is invention relates to an improved polyuleric product having a fabric layer means, and Jo a metnod of making sucll a polymeric product.
. Prior i~rt Statelllent It is known to provide a polymeric product which has a fabric layer means provided with opposed sides, and at least one polymeric mearls secured to the fabric l layer means. For example, see the U.S. Yatent to Williams, No. 3,998,986; the U.S. Patent to Long, to 4,062,989; and the U.S. Patent to ~lollaway et al, Jo.
'~,238,530.
Summary of the Invention lS It is one feature of this invention to provide an improved pol~neric product having a fabric layer means, and at least one polymeric means secured to the fabric layer neans.
In particular, it is well known that a woven fabric structure that has been impregnated or coated with a polymeric means, such as a latex, has been used as an encapsulating or reinforcing member in endless transmission belts, such as a V-belt, and in other products, and has undergone a progression of change, principally directed toward the relationship of the warp fill angularity to the longitudinal axis of the belt. For example, initially, the warp or fill of 3~'5~
the fabric was a right angles to the longitudinal axis; then the fabric was subsequently cut and turned on a ~0 bias; then the fabric was subsequently cut and turned to a 120 bias; and thin today the fabric comprises a seamless bias disposed at 120. Each such change in the polymeric coated fabric was pri-marily directed toward improving product flexibility.
however, it was found according to the teachings of this invention that during such changes the three-dimensional aspect of the plain weave of the fabrichad not been altered.
It is also well known in the art that improving structural flexibility or bending modulus of the polymeric coated fabric can be altered by decreasing yarn density (cover factor), decreasing twist of the yarn system, increasing the warp/fill angle, and/or decreasing the number of cross-over points in the woven structure. Thus, it can be seen that the change in the base fabric structures has followed a need to optimize flexibility. An extension of this flexibility move in the art has been directed toward fabric manu-facturing systems that emulate the desired bias and use yarn bundles or fiber bundles that are not inter-laced as in a woven structure, but are being held to-~5 gether in the third dimension by either a stitchingthread or fiber reinorientation, such as by needle punching. Ilowever, the result of this change has 'I 3~
been opposite to the objective, as flexibility was reduced.
However, lt was found according to the teach ings of this invention what a fabric means can be provided wllere:in the bias orientation is maintained while the third dimension function is eliminated.
This is accomplished by utilizing polymeric means as the effective sole secl~rement means between the threads of the fabric means so as to impart its flex-ibility characteristic to the securement means of thefabric means, whereby the resulting product has the desired structural flexibility or bending modulus.
y one aspect of this invention, there is pro-vided a polymeric product having a fabric layer means provided with opposed sides, and at least one polymeric means secured to said fabric layer means; the improve-ment wherein said fabric layer means comprises a first substantially planar layer of thread means disposed in superimposed relation with a second substantially planar layer of thread means, whereby said thread means of said first layer are not woven with said thread means of said second layer, said polymeric means effectively being the sole securement means securing said thread means of said first layer Jo said thread means of said second layer and thPreby imparting its flexible characteristic to said securement means be-tween said thread means of said first and second lZ;3~,5~,~
layers.
y another aspect of this invention, there is provided a polymeric product having a pol~neric body provided with a surface uieans, and a sheet-like strip whicl-l is sccured to said surface of said body an colll~risin~, a fabric layer means provided with opposed sides an at least one polymeric means se-cured to said fabric layer means, tlle improvement wherein said fabric layer means comprises a first sub-stantially planar layer of thread means disposed insuperimposed relation with a second substantially planar layer of thread means whereby said thread means of said first layer are not woven with said thread means of said second layer, said polymeric means effec-tively being thé sole securement means securing said thread means of said first layer to said thread means of said second layer and thereby imyarting its flex-ible characteristic to said securement means between said thread means of said first and second layers.
Accordingly, it is an object of this invention to provide an improved polymeric product having a fabric layer means provided with at least one polymeric means secured to the fabric layer means, the product oE this invention having one or more of the novel features of this invention as set forth above or hereinafter shown or described.
By another aspect of this invention, there is Z Ir21.
providecl a method of making a polymeric product having a fabric layer means provided with opposed sides, and at least one polymeric means secured to said fabric layer means; the improveln~nt comprising S the steps of forming said fabric layer means to comprise a first substantially planar layer of thread means disposed in superimposed relation witll a second substantially planar layer of thread means, whereby said thread means of said first layer are not woven lU with said thread r.leans of said second layer; and form-ing said polymeric means to effectively be the sole securement means securing said thread means of said first layer to said thread means of said second layer and thereby impart its flexible characteristic to said securement means between said thread means of said first and second layers.
Brief Description of the drawings The features of the invention, and its technical advantages, can be seen from the following description of preferred embodiments, together with the claims and the accompanying drawings, in which:
FIG. 1 is an enlarged, fragmentary, par-tially broken away, cross-sectional, schematic, yer-spective view of an improved polymeric product of this invention;
FIG. 2 is a cross-sectional view of an endless transmission belt construction utilizing the polymeric product of lit. l;
FIG, 3 is a fragmentary view similar to FIX. 2, and illustrates another type of belt utiliz-ing the polymeric product of FIG. l;
l'I~. 4 is a fragmentary perspective view illustrating another product of this invention utilizine, the polylneric product of FIG. l;
FIG. S is a schematic top view of an im-proved metnod and apparatus of this invention for li~akin~ the polymeric product of FIG. l;
FIG. 6 is an enlarged schematic side view of the rllethod and apparatus of FIG. 5;
FIG. 7 is a schematic view illustrating a certain portion of the method and apparatus of FIGS. S and 6;
. FIG. 8 is an enlarged, schematic, fray-mentary cross-sectional view taken on line 8-8 o FIG. 7;
FIG. 9 is a view si;nilar to FIG. 8 and illustrates another embodiment of this invention; and FIG. 10 is a view similar to FIG. 8 and illustrates another embodiment of this invention.
3~3~
Description of tne Preferred Embodiments l~hile the various features of this invention are hereinafter illustrated and described as being particularly adapted to provide a polymeric-coated S fabric layer means for making particular products, it is to be understood tllat the various features of this invention can be utilized singly or in various combinations thereof to provide a polymeric product for other uses and/or for other products as desired.
Therefore, thiS invention is not to be limited to only the embodiments illustrated in the drawings, because the drawings are merely utilized to illustrate some of the wide variety of uses of this invention.
Referring now to FIG. 1, one embodiment of the improved polymeric product of this invention is generally indicated by the reference numeral 20, and comprises a polymeric-coated fabric layer means hav-ing a fabric layer means that is generally indicated by the reference numeral 21 and is provided with opposed sides 22 and 23; the polymeric product 20 also comprises two I~olyMeric layers or means 24 and 2j respectively disposed on the opposite sides 22 and 23 of the fabric layer means 21 and having been exuded into the fabric layer means 21 to be secured thereto in a manner nereinaf~er set forth.
-I 3~
The fabric layer moms 21 of this invention compri~e~ a first substantially planar layer 26 of thread mans 27 disposed ln ~perimposed relation with a second substantially p:lanar layer 28 of thread means 29, whex~y the ~hre~d jeans 27 of the first layer 26 are not woven with the thread means 29 of thy aacond layer 28~ but are secured thereto by the polym~xie means 24, 25 in such a winner that the polyp meric means 24, 25 effectively comprises the iole 10 securement mean9 securing the ehre~d means 27 of the first layer 26 Jo the thread men 29 ox the second layer 28, and thereby imp~rt~ it flexible characteris-tic to the securement means between the threat means 27 and 29 of the first und second layers 26 end 28.
In this wanner, it is believed that the re-sulting polyme~ic-coated fabric layer means or poly-meric product 20 ox this invention will have an im-proved structural flexibility or bending modulus than if the fabric layer means 21 had comprised a conven-tional woven fabric layer means, such as set forth in the ~fo~ementioned U.S. Potent No. 4,062,989 Ed 4,23~,530, or had comprised stitched or needled struc-ture as set forth in the aforementioned U.S. Patent No. 3~998,98~
In particular, it i8 belieYed that the poly-merie-coated layer mesns 20 of this invention can be readily utlll~ed by itself, or with another pol~merlc produ.~, by waving one of the opposed outer surfaces 30 or 31 thereof secured to 8 surface o the polymeric product for the same purpose ~md in a manner ~lmil~r t.o other prior known polymeric coated fabric layer mean .
S For example Lee UO:S. Patent 4,501P771D
issued February 26, 1985~ of Delmar Do Long one of the co inventors of this inventior1, whereln on addi-tional tacky layer it provided on the pol~r~
coated fabrlc layer meanR fvr such ~ecurement purr lû poa~s . Thi8 U .S . paterlt desc:rlbes the variou3 uses of polymerlc-coated fabric layer mews" and a method and apparatus for making the some, which is similar go this inYQn~iont as will be apparent hereinafter .
Reference ~8 now made to FIX. 2~ where1n another polymeric product of this vention ~8 gener-ally indicated by ache reference numPral 32D and utiliæ-es the pre~rlously described polymeric product 20. The polymeric product 32 compri$es an endless power tran~-: 20 mi8810n belt of a typical "V" type, wherein a polymeric body 33 whereof ha a substantially trapezoidal ens sectional conflgurstion defined by a pair of oppose flat parallel top and bottom surfaces 34 and 35~ with a pair of angled side surfaces 36 and 37 disposed ~herebetwee~. The belt con~ruction 32 ha the con-ventlonal tension section 38p compresslon section 39, and load carrying section 40 disposed intermediate the tension sectlon 38 end the compression see~lo~ 39 in a manner well knowQ in the art, the sections 38, 399 and ~0 being made mainly of polymeric material.
As is conventional in the art, the opposed angular surfaces 36 and 37 of the belt body 33 are each adapted to have a fricti.on layer 9 which comprises a fabric it is impregnated with a polymeric composi-tion, and Rich is secured thereon by such friction layer either being disposed only on the surfaces 36 and 37 thereof, or by having the entire outside sur face of the belt body 33 wrapped with the friction layer In any event, it can be seen that the belt construction 32 illustrated ln FIG. 2 has the belt body 33 thereof csmpletely wrapped by a trip of a polymeric-~oated fabric layer means 20 of this inveno tion, so that the opposed ends 40 and 41 of the layer means 20 are disposed and secured in overlapping re-lation, such as on the top surface 34 of the belt body 33 as illustrated in FlG. 2; this is conventional 20 in the bel t making art .
When utilizing the layer means 20 of 'chis invention for forming the belt constnlc.tion 32 of FIG. 2~ it can be teen that either the side 30 or the side 31 thereof can be disposed in contact with the 25 outer surfaces 34~ 35, 36, and 37 of the polymeric body 33, end it is believed that the improved flexible characteristic of the polyrneric product 20 will permit the polymeL ic product 20 to more readily conform to such surfaces 34, 35, 36, and 37, so that during a 30 subsequeIIt heat curing or vulcanizing of the belt ~L~3~?q'~
construction 32~ after the layer means 20 ha8 been wrapp d on the belt body 33 :in manner well known ln the art of making belt c~nst:nuctlon~, the polymeric product 20 will be secured the bPlt body 33 through out lts entire outer surface area.
A1SQ9 it i9 to by und~rstoo~ that the partio~
ular side 30 or 31 of the pol~meric-coated fabrlc layer means 20 o this invention that is to be c cured to the ides 3~, 35~ 36, and 37 of the belt body 33 could be covered with on additional tacky layer us ~8 d~clo~d in the aforementlo~ed.U.:SO
Patent 4,501,771, to enhance the securement there between In any ev~nt9 it con be seen that the outer surface 30 or 31 of the Mayer means 20 of this in-vent~on provides the contact facing of the belt Jon-~truction 32 it the driving or driven insides 36 and 37 thereo~g as i8 conventional in the art9 while the fabric layer means 21 provides the desired reinforoing 20 c~racteristic to the belt constn~c~on 32 and a ye same time provides on improved flex bility thereto because of the effective flexible securement between the thread means 27 end 29 of the first and second layer 26 and 28~
While the polym~ric-co~ted fabric layer means 20 of this invention ha8 been previously describ-ed as forming on outside surface of a bel t pxo~uc~ " it i.s to be understood that the layer means 20 of this in vPntion can provide no t only on outside surface there-of but also in ~dditlon thereto, or in lleu thereof, 3~
can orm part of an inner layer of the belt product if desired. For example, reference is now maze to FIG. 3, wherein another poly~ric belt body or pro act 42 of this invention is provided, and comprises 5 a pair of polymeric layers 43 and 44 respectively having faoin~ sides 45 and 46 being secured to each other by a strip 47 of thy layer means 20 of this invention thaw is disposed intermediate the polymRric layers 43 and 44 and is secured thereto during a sub-10 sequent heating, wring, or vulcanizing of the beltbody 43 in a manner well known in the art of making belt oonstructions.
Also, while the polymeric-coated fabric layer means 20 of this lnvention has previollsly been lS described as forming a part or parts of a belt con-struction or the like, it is to be understood that there are other products that can utilize the layer means 20 of this invention by itself or as a part whereof .
For ex~anple 9 the layer means 2V of this in-vention can provide a hose construction (generally indicated by the reference numeral 48 in FIG. 4) by having an elongated strip 49 of the layer means 20 of this invention helically wrapped and secured in over 25 lapping relation in a manner well known in the hose construction art to provide the hose construction 48, together with or without additional wire reinorcing means as desired.
Further 7 it; iS to be understood that the 0 polymeric-coated fabric layer means ~0 of this
ack,,round of Ihe Invention 1. yield of the Invention Tl-.is invention relates to an improved polyuleric product having a fabric layer means, and Jo a metnod of making sucll a polymeric product.
. Prior i~rt Statelllent It is known to provide a polymeric product which has a fabric layer means provided with opposed sides, and at least one polymeric mearls secured to the fabric l layer means. For example, see the U.S. Yatent to Williams, No. 3,998,986; the U.S. Patent to Long, to 4,062,989; and the U.S. Patent to ~lollaway et al, Jo.
'~,238,530.
Summary of the Invention lS It is one feature of this invention to provide an improved pol~neric product having a fabric layer means, and at least one polymeric means secured to the fabric layer neans.
In particular, it is well known that a woven fabric structure that has been impregnated or coated with a polymeric means, such as a latex, has been used as an encapsulating or reinforcing member in endless transmission belts, such as a V-belt, and in other products, and has undergone a progression of change, principally directed toward the relationship of the warp fill angularity to the longitudinal axis of the belt. For example, initially, the warp or fill of 3~'5~
the fabric was a right angles to the longitudinal axis; then the fabric was subsequently cut and turned on a ~0 bias; then the fabric was subsequently cut and turned to a 120 bias; and thin today the fabric comprises a seamless bias disposed at 120. Each such change in the polymeric coated fabric was pri-marily directed toward improving product flexibility.
however, it was found according to the teachings of this invention that during such changes the three-dimensional aspect of the plain weave of the fabrichad not been altered.
It is also well known in the art that improving structural flexibility or bending modulus of the polymeric coated fabric can be altered by decreasing yarn density (cover factor), decreasing twist of the yarn system, increasing the warp/fill angle, and/or decreasing the number of cross-over points in the woven structure. Thus, it can be seen that the change in the base fabric structures has followed a need to optimize flexibility. An extension of this flexibility move in the art has been directed toward fabric manu-facturing systems that emulate the desired bias and use yarn bundles or fiber bundles that are not inter-laced as in a woven structure, but are being held to-~5 gether in the third dimension by either a stitchingthread or fiber reinorientation, such as by needle punching. Ilowever, the result of this change has 'I 3~
been opposite to the objective, as flexibility was reduced.
However, lt was found according to the teach ings of this invention what a fabric means can be provided wllere:in the bias orientation is maintained while the third dimension function is eliminated.
This is accomplished by utilizing polymeric means as the effective sole secl~rement means between the threads of the fabric means so as to impart its flex-ibility characteristic to the securement means of thefabric means, whereby the resulting product has the desired structural flexibility or bending modulus.
y one aspect of this invention, there is pro-vided a polymeric product having a fabric layer means provided with opposed sides, and at least one polymeric means secured to said fabric layer means; the improve-ment wherein said fabric layer means comprises a first substantially planar layer of thread means disposed in superimposed relation with a second substantially planar layer of thread means, whereby said thread means of said first layer are not woven with said thread means of said second layer, said polymeric means effectively being the sole securement means securing said thread means of said first layer Jo said thread means of said second layer and thPreby imparting its flexible characteristic to said securement means be-tween said thread means of said first and second lZ;3~,5~,~
layers.
y another aspect of this invention, there is provided a polymeric product having a pol~neric body provided with a surface uieans, and a sheet-like strip whicl-l is sccured to said surface of said body an colll~risin~, a fabric layer means provided with opposed sides an at least one polymeric means se-cured to said fabric layer means, tlle improvement wherein said fabric layer means comprises a first sub-stantially planar layer of thread means disposed insuperimposed relation with a second substantially planar layer of thread means whereby said thread means of said first layer are not woven with said thread means of said second layer, said polymeric means effec-tively being thé sole securement means securing said thread means of said first layer to said thread means of said second layer and thereby imyarting its flex-ible characteristic to said securement means between said thread means of said first and second layers.
Accordingly, it is an object of this invention to provide an improved polymeric product having a fabric layer means provided with at least one polymeric means secured to the fabric layer means, the product oE this invention having one or more of the novel features of this invention as set forth above or hereinafter shown or described.
By another aspect of this invention, there is Z Ir21.
providecl a method of making a polymeric product having a fabric layer means provided with opposed sides, and at least one polymeric means secured to said fabric layer means; the improveln~nt comprising S the steps of forming said fabric layer means to comprise a first substantially planar layer of thread means disposed in superimposed relation witll a second substantially planar layer of thread means, whereby said thread means of said first layer are not woven lU with said thread r.leans of said second layer; and form-ing said polymeric means to effectively be the sole securement means securing said thread means of said first layer to said thread means of said second layer and thereby impart its flexible characteristic to said securement means between said thread means of said first and second layers.
Brief Description of the drawings The features of the invention, and its technical advantages, can be seen from the following description of preferred embodiments, together with the claims and the accompanying drawings, in which:
FIG. 1 is an enlarged, fragmentary, par-tially broken away, cross-sectional, schematic, yer-spective view of an improved polymeric product of this invention;
FIG. 2 is a cross-sectional view of an endless transmission belt construction utilizing the polymeric product of lit. l;
FIG, 3 is a fragmentary view similar to FIX. 2, and illustrates another type of belt utiliz-ing the polymeric product of FIG. l;
l'I~. 4 is a fragmentary perspective view illustrating another product of this invention utilizine, the polylneric product of FIG. l;
FIG. S is a schematic top view of an im-proved metnod and apparatus of this invention for li~akin~ the polymeric product of FIG. l;
FIG. 6 is an enlarged schematic side view of the rllethod and apparatus of FIG. 5;
FIG. 7 is a schematic view illustrating a certain portion of the method and apparatus of FIGS. S and 6;
. FIG. 8 is an enlarged, schematic, fray-mentary cross-sectional view taken on line 8-8 o FIG. 7;
FIG. 9 is a view si;nilar to FIG. 8 and illustrates another embodiment of this invention; and FIG. 10 is a view similar to FIG. 8 and illustrates another embodiment of this invention.
3~3~
Description of tne Preferred Embodiments l~hile the various features of this invention are hereinafter illustrated and described as being particularly adapted to provide a polymeric-coated S fabric layer means for making particular products, it is to be understood tllat the various features of this invention can be utilized singly or in various combinations thereof to provide a polymeric product for other uses and/or for other products as desired.
Therefore, thiS invention is not to be limited to only the embodiments illustrated in the drawings, because the drawings are merely utilized to illustrate some of the wide variety of uses of this invention.
Referring now to FIG. 1, one embodiment of the improved polymeric product of this invention is generally indicated by the reference numeral 20, and comprises a polymeric-coated fabric layer means hav-ing a fabric layer means that is generally indicated by the reference numeral 21 and is provided with opposed sides 22 and 23; the polymeric product 20 also comprises two I~olyMeric layers or means 24 and 2j respectively disposed on the opposite sides 22 and 23 of the fabric layer means 21 and having been exuded into the fabric layer means 21 to be secured thereto in a manner nereinaf~er set forth.
-I 3~
The fabric layer moms 21 of this invention compri~e~ a first substantially planar layer 26 of thread mans 27 disposed ln ~perimposed relation with a second substantially p:lanar layer 28 of thread means 29, whex~y the ~hre~d jeans 27 of the first layer 26 are not woven with the thread means 29 of thy aacond layer 28~ but are secured thereto by the polym~xie means 24, 25 in such a winner that the polyp meric means 24, 25 effectively comprises the iole 10 securement mean9 securing the ehre~d means 27 of the first layer 26 Jo the thread men 29 ox the second layer 28, and thereby imp~rt~ it flexible characteris-tic to the securement means between the threat means 27 and 29 of the first und second layers 26 end 28.
In this wanner, it is believed that the re-sulting polyme~ic-coated fabric layer means or poly-meric product 20 ox this invention will have an im-proved structural flexibility or bending modulus than if the fabric layer means 21 had comprised a conven-tional woven fabric layer means, such as set forth in the ~fo~ementioned U.S. Potent No. 4,062,989 Ed 4,23~,530, or had comprised stitched or needled struc-ture as set forth in the aforementioned U.S. Patent No. 3~998,98~
In particular, it i8 belieYed that the poly-merie-coated layer mesns 20 of this invention can be readily utlll~ed by itself, or with another pol~merlc produ.~, by waving one of the opposed outer surfaces 30 or 31 thereof secured to 8 surface o the polymeric product for the same purpose ~md in a manner ~lmil~r t.o other prior known polymeric coated fabric layer mean .
S For example Lee UO:S. Patent 4,501P771D
issued February 26, 1985~ of Delmar Do Long one of the co inventors of this inventior1, whereln on addi-tional tacky layer it provided on the pol~r~
coated fabrlc layer meanR fvr such ~ecurement purr lû poa~s . Thi8 U .S . paterlt desc:rlbes the variou3 uses of polymerlc-coated fabric layer mews" and a method and apparatus for making the some, which is similar go this inYQn~iont as will be apparent hereinafter .
Reference ~8 now made to FIX. 2~ where1n another polymeric product of this vention ~8 gener-ally indicated by ache reference numPral 32D and utiliæ-es the pre~rlously described polymeric product 20. The polymeric product 32 compri$es an endless power tran~-: 20 mi8810n belt of a typical "V" type, wherein a polymeric body 33 whereof ha a substantially trapezoidal ens sectional conflgurstion defined by a pair of oppose flat parallel top and bottom surfaces 34 and 35~ with a pair of angled side surfaces 36 and 37 disposed ~herebetwee~. The belt con~ruction 32 ha the con-ventlonal tension section 38p compresslon section 39, and load carrying section 40 disposed intermediate the tension sectlon 38 end the compression see~lo~ 39 in a manner well knowQ in the art, the sections 38, 399 and ~0 being made mainly of polymeric material.
As is conventional in the art, the opposed angular surfaces 36 and 37 of the belt body 33 are each adapted to have a fricti.on layer 9 which comprises a fabric it is impregnated with a polymeric composi-tion, and Rich is secured thereon by such friction layer either being disposed only on the surfaces 36 and 37 thereof, or by having the entire outside sur face of the belt body 33 wrapped with the friction layer In any event, it can be seen that the belt construction 32 illustrated ln FIG. 2 has the belt body 33 thereof csmpletely wrapped by a trip of a polymeric-~oated fabric layer means 20 of this inveno tion, so that the opposed ends 40 and 41 of the layer means 20 are disposed and secured in overlapping re-lation, such as on the top surface 34 of the belt body 33 as illustrated in FlG. 2; this is conventional 20 in the bel t making art .
When utilizing the layer means 20 of 'chis invention for forming the belt constnlc.tion 32 of FIG. 2~ it can be teen that either the side 30 or the side 31 thereof can be disposed in contact with the 25 outer surfaces 34~ 35, 36, and 37 of the polymeric body 33, end it is believed that the improved flexible characteristic of the polyrneric product 20 will permit the polymeL ic product 20 to more readily conform to such surfaces 34, 35, 36, and 37, so that during a 30 subsequeIIt heat curing or vulcanizing of the belt ~L~3~?q'~
construction 32~ after the layer means 20 ha8 been wrapp d on the belt body 33 :in manner well known ln the art of making belt c~nst:nuctlon~, the polymeric product 20 will be secured the bPlt body 33 through out lts entire outer surface area.
A1SQ9 it i9 to by und~rstoo~ that the partio~
ular side 30 or 31 of the pol~meric-coated fabrlc layer means 20 o this invention that is to be c cured to the ides 3~, 35~ 36, and 37 of the belt body 33 could be covered with on additional tacky layer us ~8 d~clo~d in the aforementlo~ed.U.:SO
Patent 4,501,771, to enhance the securement there between In any ev~nt9 it con be seen that the outer surface 30 or 31 of the Mayer means 20 of this in-vent~on provides the contact facing of the belt Jon-~truction 32 it the driving or driven insides 36 and 37 thereo~g as i8 conventional in the art9 while the fabric layer means 21 provides the desired reinforoing 20 c~racteristic to the belt constn~c~on 32 and a ye same time provides on improved flex bility thereto because of the effective flexible securement between the thread means 27 end 29 of the first and second layer 26 and 28~
While the polym~ric-co~ted fabric layer means 20 of this invention ha8 been previously describ-ed as forming on outside surface of a bel t pxo~uc~ " it i.s to be understood that the layer means 20 of this in vPntion can provide no t only on outside surface there-of but also in ~dditlon thereto, or in lleu thereof, 3~
can orm part of an inner layer of the belt product if desired. For example, reference is now maze to FIG. 3, wherein another poly~ric belt body or pro act 42 of this invention is provided, and comprises 5 a pair of polymeric layers 43 and 44 respectively having faoin~ sides 45 and 46 being secured to each other by a strip 47 of thy layer means 20 of this invention thaw is disposed intermediate the polymRric layers 43 and 44 and is secured thereto during a sub-10 sequent heating, wring, or vulcanizing of the beltbody 43 in a manner well known in the art of making belt oonstructions.
Also, while the polymeric-coated fabric layer means 20 of this lnvention has previollsly been lS described as forming a part or parts of a belt con-struction or the like, it is to be understood that there are other products that can utilize the layer means 20 of this invention by itself or as a part whereof .
For ex~anple 9 the layer means 2V of this in-vention can provide a hose construction (generally indicated by the reference numeral 48 in FIG. 4) by having an elongated strip 49 of the layer means 20 of this invention helically wrapped and secured in over 25 lapping relation in a manner well known in the hose construction art to provide the hose construction 48, together with or without additional wire reinorcing means as desired.
Further 7 it; iS to be understood that the 0 polymeric-coated fabric layer means ~0 of this
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invention can provide part of a printing blanket, gas-key means, etch, whereby it can be seen ill the layer means 20 of this invention can be utilized as a pro-duct itself, or with other products tlOt disclosed in 5 this application, because it i5 believed ill the same is readily adapted to be utilixed where any such poly-meric-coated fabric layer means is presently being used, or where such a polymeric-coated fabric layer means could possibly be used.
The first layer 26 of thread moan 27 of the polymeric-coated fabric layer means 20 comprises a plurality of threads, strands, yarns or the like disk posed generally parallel to each other, with any de-sired p~t~ern of spaces or non-spaces therebetween, 15 and being disposed at an angle relative to the longi-tudinal axis of the layer means 20, such as being at an acute angle to the longitudinal axis 50 as illustrated in FIG. l Similarly, the second layer 28 of thread 20 means 29 of the polymeric-coated fabric means 20 com-prises a plurality of threads, straDcl~, yarns or the like disposed generally parallel to etch other7 with any desired pattern of spaces or non-spsces there-between, and being disposed at an obtuse angle relative 25 to the longitudinal axis 50 of the layer means 20 so as to cross with the thread moans ~7 of the first layer 26 at some angle, such as betwe~ 90 to 120 . however, it is of course to be understood what any desired angle between the thread means 27 and 29 of the layers 26 and 0 28 can be provided, as desired.
Further, it is to be understood that thethread means 27 arld 29 of the layer means 26 ~n~ 28 could comprise any one suitable material or co~lld be blends of suitable matexials, with the thread means 27 S and 29 being uniform dissimilar, or any desired com-bination thereof as desired.
Also 9 the polymeric means 24 t 25 oan come prise any suitable polymeric material, such as latex wqth the material of the layers 24 and 25 10 being like, similar or different as desired.
In any event9 as previously stated the poly-meric means 24, 25 provides the sole securement between the thread mews 27 and 29 of the layers 26 and 28 50 as to add its flexible characteristic to such securement means so that the layer means 20 will readily conform to the particuLar shape in the final product thereof, whether the same is ormed into the hose 48 of FIG. 49 the bel.t configurations of FIGS 2 or 3? or other products as desired, as well as add its flexibility to the final product together with the re-inforcing characteristic of the fabric means 21 thereof.
hile it is believed that the polym~rlc coat-ed fabrio layer means 20 of thls invention Jan be made by any suitable method and apparatus, one such method and apparatus is generally indicated by the reference numeral 51 in FIGS. 5, 6 and 7, and will now be describedO
As illustrated in FIGS. 5 and 6, the method and apparatus 51 includes a tenter frame 52, similar 0 Lo the tenter frames of the aforementioned U.S.
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palten~ hat it adsp~ed ted be ~vedin any suitable Ir~nrler from le f t to right in FIGS . 5 end 6, and to Eve ye two layers 26 end 28 of threEId means 27 cmd 29 laid thereon at desired angle so S us to be dispo.~ed in the stacked relatlon illustr~3.tPd in F IG . l F or ~x~mple, the thread meMns 29 for thQ
layer mearls 2~ con be fed in berm fashiorl from a supply 53 thereof into an area 54 wherein the same 10 are cut end lid across the tenter frame 52 from one side 55 thereof to the other side 56 thereof, and ore held thereon by the conventional tenter pins 57t so that each thread means 29 excends from one slde 55 of thP
tenter rame 52 to the other side 56 thereon it the 15 desired angle relative to the longitudir~l axis 58 of the tenter frame S2.
Simllarly, another berm of the thread means 27 con be fed from a supply 59 thereof into the ares 54 so as to have the thread means 27 thereof cut and 20 laid across the tenter frame 52 on top of the thread means 29 at an angle relative thereto, so that each thread means ~7 extends from the side 55 of the tenter frame 52 to the side 56 thereof at the desired angle relative to the longitudinal axis 58 of the venter 25 frame 52.
It is to be understood that l:he thread men 27 and 29 can be cut and laid on the tenter frame 52 in ei ths~r a ontinuous or intermittent manor 1 as the superimposed layers 26 end 28 can then be indexed in con~inu~us cr intermittent manner from left to right US -I. ~3~
through the r~rn~ ng portion of the ~pparabu 51 to have the polymeric mean 24 end 25 applied thereto i much the same mann2r as prodded by the me thods end apparatus set forth in the aforementioned U.S9 patents, In particular, after the layers ~6 and 28 have been disposed in the: superimposed relation on the tenter frame 52 to deine the fAbrlc layer means 21, the tenter frame 52 can be slightly outward1y stretched in the area of the reference numeral 60 in FIGS. 5 end 6 to make sure that the thread 27 Ed 2~ are disposed in a taut relation as the same pass between suitable costing means 61 and 62 that are respeotiYely disposed on opposite sldes of thP tenter frame 52 to respectively apply toe polymeric coatings 24 and 25 in a liquid manner So the respective ides 22 Ed 23 ox toe fabric layer means 21, so that the coatings 24 end 25 will not only be secured to those sides 22 and 23, hlt also so that the coaxings 24 end 25 wLll exude into the fabric layer means 21 Jo secure the thread means 27 and 29 thereon together when thy coating 24 end 25 are subsequently dried by the drying apparat:us (generaLly indicate by the reference rlum~ral 63 in FIGS. 5 and 6).
. However, before the Dow ooated fabric means 21 pauses in'co the hefting me~rls 639 the coatings 24 ~xld 25 are ~espectlvely doctored by sui~ble doctor jeans 64 and 65 to define the relatively sooth outer suraces 30 and 31. The tenter frame 52 then further stretches the pol~rmeric-coated fabric means 20 ln the area of the referellce numeral 66 in FIÇS. 5 and 6 to make sure that the layer means 20 is held with its thread means 27 and 29 in a taut manner as the Nat ings 24 aft 25 are subsequently clried to at least a 5 holding condition thereof by the heating means 63.
While the heating me~rls 63 can comprise any suitable structure, the same compri.ses a h~oated air s oven-like member through which the layer means 20 passes from left to right, so that by the time the 10 layer rneans 20 exits the heating [neans 63, the coatings 24 and 25 have been suficiently dried so that the same will hold the thread means 27 arxl 29 in their assembl.ed and encapsulated manner.
If desired, suitable cooling means 67 can be 15 provided to cool the layer mews 20 before the same is wound into a supply roll 6~ thereof. The supply roll 68 has a web 69 of matcrial wound with the layer mears 20 intermediate the coils thereof so as to pre-vent sticking of the coils of the layer means 20 on the supply roll 69 thereo i desired as is well known in the art.
Therefore, it can be seen that it is a relatively simple method of thiC invention to form the poly~eric-coated fabric layer means or product 20 in 25 the manner previously set forth owever, while the method and apparabus 51 of this invention has been previously described as having the thread means 27 disposed on top of the thread means 29 in the area 54, without providing any 30 securernent therebetween, so that the stacked thread means 27 and 29 have the appearance illustrated schematically in FIG. 8 at the time the l.iquid coat-ings 24 and 25 are to be applied ~h~reto~ it is to be understood that one or both layers 26 and 28 of the thread means 27 and 29 could be precoated~ either on just the contacting sides therPof or completely around the same, with a liq~lid pol~neric material, such as latex before the so are disposed in superimposed relation on the tenter frame 52.
For example, it can be seen schematically in FIGo 7 that coating means 70 and 71 can be respective-ly provided for the thread means 27 and 29 to apply a polymeric coating 72 to cnly the sides 73 and 74 of the thread means ~7 and 29 which will be disposed facing each other in the mannRr illustrated in FIG. 9, so that the polymeric means 72 will provide sufficient adhesive means to hold the thread means 27 end 29 together as the same pass through the coating means 61 and 62 in the apparatus 51. In this manner, the coat-ings 24 and 25; together with the coating 72~ form thepolymeric means that secures the thread means 27 and 29 together in the final product thereof.
However, it is to be understood that the layer means or polymeric product 20 of this invention could halve a cross-sectional configuration that looks like the structure illustrated in FIG. 9 without hav-ing the additional coatings 24 and 25 applied therto, as the polymeric means 72 will still provide the effec-tive sole securement means or securing the layers 26 0 and 28 ox thread means 27 and 29 togeth r.
f Alternately, the pol.ymeric applying means 70and 71 can be so constructed and arranged that ti-'e same wi 11 completely coat the thread means 27 and 29 with a po~neric material 75 as illustrated in FIGo 10 sO
that when tne thread means 27 and 29 are disposed in superimposed relatlon on the tenter frame 529 the re-sulting structure ~11 have the app~aran~e as illustrat-ed in JIG. 10, so that the COa~lngS 24 and 25 can be subseqllently applied thereto by the coating means 61 end 62 if desired. In this manner, the COatlngS 24 and 25, together with the coatings 75, orm the poly-meric means that secures the thread means 27 and 2 together in the final product thereofO
However as previously stated, the coatings 24 and 25 need not be proYided for forming the layer means or polymeric product 20 of this invention as the polymeric material 75 will provide the only poly-meric materlal thereof and will provide the effective sole securement means for securing the thread means 27 and 29 together in the manner previously set forth, and as illustrated in FIG. lOo Also, it is to be understood that only one coating ~4 or 25 need be provided for making the pro duct 20 of this invention 9 as the same will sufficient ly exude into the fabric means 21 to secure the thread means 27 and 29 together if the precoatings 72 or 75 are not also utilized Therefore, it can be seen that there are various methods and apparatus that can be utiliæed to make the layer means 20 of this invention having the 3C~5 unique features previously selt forthO
Thus, it ean be seen that it is a relatively simple rnethod of this inYention to provide the poly-merio-csated fabrie layer means or polymeric produok 20 5 of this invention that comprises a fabric layer means 21, provided with opposed sides 22 and 23, and at least one polymeric means 72, 75, 24 and/or 25 secured to the fabric layer means 21; the fabric layer means 21 comprises a first substantially planar layer 26 of 10 ~hxead means 27 disposed in superimposed relation with a second substantially planar layer ~8 of thread means 29, whereby the thread mesns ~7 of the first layer 2 are not woven with the thread means 29 of the seeond layer 28. The polymeric means 72~ 75, 24 and/or 25 effectively is the sole 5ecurement means securing the thread means 27 of the first layer 26 to the thread means 29 of the second layer 28, and thereby impart its flexible characteristic to the securement means between the thread means 27 and 29 of the first and second layers 26 and 28.
While the product means 20 of this invention has been previously described as having the thread means 27 and 29 separated from each other before the polymerio maternal is added thereto, it is to be under stood what the thread means 27 and 29 could initially be stitched in stacked relation with a sewing thread that will dissolve after the polymeric material is added thereto 9 SO that the subsequently added polymer-ie material still provides the effectîve sole secure 30 menk means Also, it is to be understood that the thread means 27 and 29 could ye laid in place; such as on a polymeric belc section and when anQ~her polymeric belt ~ec~ion could be added on top of the tame, 80 thaw a subsequent her curing OperatiDn will cause at lea t S one of the belt ~ectlons to exude unto the thxead me 27 and 29 go provide the efectiv~ 801e ~ecure~nt mean thereor without hav~g the thread mean 27 end 29 initially secured together with the polymeric mear~s.t As pre~lously stated, the thread means 27 and 29, and the polymeric mean 24,- ~5, J2, and 75 cay comprise any viable ms~er~al or co~binat~on thereof Howeverp it i8 l:o be understooed that any of the meas~
27,~ 29, 24, 25, 72 and 75 can be of the particular type or type set forth on the aforementioned:U.:S. paten~s~, Also, while the heating means 63 has been de~crib~
ed as dying the coatings 24, ~5~ 72 andlor 75 to a condition what will hold the thread means 27 and 29 in 6ecured~toge~her relationg sueh heatlng means can pro-vide such dried condition without curing of the eoat-lngs 24~25, 72 and/or 75 as in the a~orementloned UOSO
patents ~nd/or patent application, 80 that such coatings can subsequently be cured, sueh as during the formation of the inal des~.red product a previously describedO
However, it i8 to be understooed that the heaein~ mean3 .25 63 can cure the coatings 24, 25~ 72 and/or 75, if de sired, a the final product may be such cured layer mean 20~
Accordingly, lt can be seen that this invention not only provides a,n improved polym.eric product jut also this invention provides an improved method of maying such a polymeric product.
While the fonrls and methods of this inven tion now preferred have been illustrated and described as required, it is to be understood that other forms and method steps can be utilized and still fall within the scope of the appended claimsO
invention can provide part of a printing blanket, gas-key means, etch, whereby it can be seen ill the layer means 20 of this invention can be utilized as a pro-duct itself, or with other products tlOt disclosed in 5 this application, because it i5 believed ill the same is readily adapted to be utilixed where any such poly-meric-coated fabric layer means is presently being used, or where such a polymeric-coated fabric layer means could possibly be used.
The first layer 26 of thread moan 27 of the polymeric-coated fabric layer means 20 comprises a plurality of threads, strands, yarns or the like disk posed generally parallel to each other, with any de-sired p~t~ern of spaces or non-spaces therebetween, 15 and being disposed at an angle relative to the longi-tudinal axis of the layer means 20, such as being at an acute angle to the longitudinal axis 50 as illustrated in FIG. l Similarly, the second layer 28 of thread 20 means 29 of the polymeric-coated fabric means 20 com-prises a plurality of threads, straDcl~, yarns or the like disposed generally parallel to etch other7 with any desired pattern of spaces or non-spsces there-between, and being disposed at an obtuse angle relative 25 to the longitudinal axis 50 of the layer means 20 so as to cross with the thread moans ~7 of the first layer 26 at some angle, such as betwe~ 90 to 120 . however, it is of course to be understood what any desired angle between the thread means 27 and 29 of the layers 26 and 0 28 can be provided, as desired.
Further, it is to be understood that thethread means 27 arld 29 of the layer means 26 ~n~ 28 could comprise any one suitable material or co~lld be blends of suitable matexials, with the thread means 27 S and 29 being uniform dissimilar, or any desired com-bination thereof as desired.
Also 9 the polymeric means 24 t 25 oan come prise any suitable polymeric material, such as latex wqth the material of the layers 24 and 25 10 being like, similar or different as desired.
In any event9 as previously stated the poly-meric means 24, 25 provides the sole securement between the thread mews 27 and 29 of the layers 26 and 28 50 as to add its flexible characteristic to such securement means so that the layer means 20 will readily conform to the particuLar shape in the final product thereof, whether the same is ormed into the hose 48 of FIG. 49 the bel.t configurations of FIGS 2 or 3? or other products as desired, as well as add its flexibility to the final product together with the re-inforcing characteristic of the fabric means 21 thereof.
hile it is believed that the polym~rlc coat-ed fabrio layer means 20 of thls invention Jan be made by any suitable method and apparatus, one such method and apparatus is generally indicated by the reference numeral 51 in FIGS. 5, 6 and 7, and will now be describedO
As illustrated in FIGS. 5 and 6, the method and apparatus 51 includes a tenter frame 52, similar 0 Lo the tenter frames of the aforementioned U.S.
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palten~ hat it adsp~ed ted be ~vedin any suitable Ir~nrler from le f t to right in FIGS . 5 end 6, and to Eve ye two layers 26 end 28 of threEId means 27 cmd 29 laid thereon at desired angle so S us to be dispo.~ed in the stacked relatlon illustr~3.tPd in F IG . l F or ~x~mple, the thread meMns 29 for thQ
layer mearls 2~ con be fed in berm fashiorl from a supply 53 thereof into an area 54 wherein the same 10 are cut end lid across the tenter frame 52 from one side 55 thereof to the other side 56 thereof, and ore held thereon by the conventional tenter pins 57t so that each thread means 29 excends from one slde 55 of thP
tenter rame 52 to the other side 56 thereon it the 15 desired angle relative to the longitudir~l axis 58 of the tenter frame S2.
Simllarly, another berm of the thread means 27 con be fed from a supply 59 thereof into the ares 54 so as to have the thread means 27 thereof cut and 20 laid across the tenter frame 52 on top of the thread means 29 at an angle relative thereto, so that each thread means ~7 extends from the side 55 of the tenter frame 52 to the side 56 thereof at the desired angle relative to the longitudinal axis 58 of the venter 25 frame 52.
It is to be understood that l:he thread men 27 and 29 can be cut and laid on the tenter frame 52 in ei ths~r a ontinuous or intermittent manor 1 as the superimposed layers 26 end 28 can then be indexed in con~inu~us cr intermittent manner from left to right US -I. ~3~
through the r~rn~ ng portion of the ~pparabu 51 to have the polymeric mean 24 end 25 applied thereto i much the same mann2r as prodded by the me thods end apparatus set forth in the aforementioned U.S9 patents, In particular, after the layers ~6 and 28 have been disposed in the: superimposed relation on the tenter frame 52 to deine the fAbrlc layer means 21, the tenter frame 52 can be slightly outward1y stretched in the area of the reference numeral 60 in FIGS. 5 end 6 to make sure that the thread 27 Ed 2~ are disposed in a taut relation as the same pass between suitable costing means 61 and 62 that are respeotiYely disposed on opposite sldes of thP tenter frame 52 to respectively apply toe polymeric coatings 24 and 25 in a liquid manner So the respective ides 22 Ed 23 ox toe fabric layer means 21, so that the coatings 24 end 25 will not only be secured to those sides 22 and 23, hlt also so that the coaxings 24 end 25 wLll exude into the fabric layer means 21 Jo secure the thread means 27 and 29 thereon together when thy coating 24 end 25 are subsequently dried by the drying apparat:us (generaLly indicate by the reference rlum~ral 63 in FIGS. 5 and 6).
. However, before the Dow ooated fabric means 21 pauses in'co the hefting me~rls 639 the coatings 24 ~xld 25 are ~espectlvely doctored by sui~ble doctor jeans 64 and 65 to define the relatively sooth outer suraces 30 and 31. The tenter frame 52 then further stretches the pol~rmeric-coated fabric means 20 ln the area of the referellce numeral 66 in FIÇS. 5 and 6 to make sure that the layer means 20 is held with its thread means 27 and 29 in a taut manner as the Nat ings 24 aft 25 are subsequently clried to at least a 5 holding condition thereof by the heating means 63.
While the heating me~rls 63 can comprise any suitable structure, the same compri.ses a h~oated air s oven-like member through which the layer means 20 passes from left to right, so that by the time the 10 layer rneans 20 exits the heating [neans 63, the coatings 24 and 25 have been suficiently dried so that the same will hold the thread means 27 arxl 29 in their assembl.ed and encapsulated manner.
If desired, suitable cooling means 67 can be 15 provided to cool the layer mews 20 before the same is wound into a supply roll 6~ thereof. The supply roll 68 has a web 69 of matcrial wound with the layer mears 20 intermediate the coils thereof so as to pre-vent sticking of the coils of the layer means 20 on the supply roll 69 thereo i desired as is well known in the art.
Therefore, it can be seen that it is a relatively simple method of thiC invention to form the poly~eric-coated fabric layer means or product 20 in 25 the manner previously set forth owever, while the method and apparabus 51 of this invention has been previously described as having the thread means 27 disposed on top of the thread means 29 in the area 54, without providing any 30 securernent therebetween, so that the stacked thread means 27 and 29 have the appearance illustrated schematically in FIG. 8 at the time the l.iquid coat-ings 24 and 25 are to be applied ~h~reto~ it is to be understood that one or both layers 26 and 28 of the thread means 27 and 29 could be precoated~ either on just the contacting sides therPof or completely around the same, with a liq~lid pol~neric material, such as latex before the so are disposed in superimposed relation on the tenter frame 52.
For example, it can be seen schematically in FIGo 7 that coating means 70 and 71 can be respective-ly provided for the thread means 27 and 29 to apply a polymeric coating 72 to cnly the sides 73 and 74 of the thread means ~7 and 29 which will be disposed facing each other in the mannRr illustrated in FIG. 9, so that the polymeric means 72 will provide sufficient adhesive means to hold the thread means 27 end 29 together as the same pass through the coating means 61 and 62 in the apparatus 51. In this manner, the coat-ings 24 and 25; together with the coating 72~ form thepolymeric means that secures the thread means 27 and 29 together in the final product thereof.
However, it is to be understood that the layer means or polymeric product 20 of this invention could halve a cross-sectional configuration that looks like the structure illustrated in FIG. 9 without hav-ing the additional coatings 24 and 25 applied therto, as the polymeric means 72 will still provide the effec-tive sole securement means or securing the layers 26 0 and 28 ox thread means 27 and 29 togeth r.
f Alternately, the pol.ymeric applying means 70and 71 can be so constructed and arranged that ti-'e same wi 11 completely coat the thread means 27 and 29 with a po~neric material 75 as illustrated in FIGo 10 sO
that when tne thread means 27 and 29 are disposed in superimposed relatlon on the tenter frame 529 the re-sulting structure ~11 have the app~aran~e as illustrat-ed in JIG. 10, so that the COa~lngS 24 and 25 can be subseqllently applied thereto by the coating means 61 end 62 if desired. In this manner, the COatlngS 24 and 25, together with the coatings 75, orm the poly-meric means that secures the thread means 27 and 2 together in the final product thereofO
However as previously stated, the coatings 24 and 25 need not be proYided for forming the layer means or polymeric product 20 of this invention as the polymeric material 75 will provide the only poly-meric materlal thereof and will provide the effective sole securement means for securing the thread means 27 and 29 together in the manner previously set forth, and as illustrated in FIG. lOo Also, it is to be understood that only one coating ~4 or 25 need be provided for making the pro duct 20 of this invention 9 as the same will sufficient ly exude into the fabric means 21 to secure the thread means 27 and 29 together if the precoatings 72 or 75 are not also utilized Therefore, it can be seen that there are various methods and apparatus that can be utiliæed to make the layer means 20 of this invention having the 3C~5 unique features previously selt forthO
Thus, it ean be seen that it is a relatively simple rnethod of this inYention to provide the poly-merio-csated fabrie layer means or polymeric produok 20 5 of this invention that comprises a fabric layer means 21, provided with opposed sides 22 and 23, and at least one polymeric means 72, 75, 24 and/or 25 secured to the fabric layer means 21; the fabric layer means 21 comprises a first substantially planar layer 26 of 10 ~hxead means 27 disposed in superimposed relation with a second substantially planar layer ~8 of thread means 29, whereby the thread mesns ~7 of the first layer 2 are not woven with the thread means 29 of the seeond layer 28. The polymeric means 72~ 75, 24 and/or 25 effectively is the sole 5ecurement means securing the thread means 27 of the first layer 26 to the thread means 29 of the second layer 28, and thereby impart its flexible characteristic to the securement means between the thread means 27 and 29 of the first and second layers 26 and 28.
While the product means 20 of this invention has been previously described as having the thread means 27 and 29 separated from each other before the polymerio maternal is added thereto, it is to be under stood what the thread means 27 and 29 could initially be stitched in stacked relation with a sewing thread that will dissolve after the polymeric material is added thereto 9 SO that the subsequently added polymer-ie material still provides the effectîve sole secure 30 menk means Also, it is to be understood that the thread means 27 and 29 could ye laid in place; such as on a polymeric belc section and when anQ~her polymeric belt ~ec~ion could be added on top of the tame, 80 thaw a subsequent her curing OperatiDn will cause at lea t S one of the belt ~ectlons to exude unto the thxead me 27 and 29 go provide the efectiv~ 801e ~ecure~nt mean thereor without hav~g the thread mean 27 end 29 initially secured together with the polymeric mear~s.t As pre~lously stated, the thread means 27 and 29, and the polymeric mean 24,- ~5, J2, and 75 cay comprise any viable ms~er~al or co~binat~on thereof Howeverp it i8 l:o be understooed that any of the meas~
27,~ 29, 24, 25, 72 and 75 can be of the particular type or type set forth on the aforementioned:U.:S. paten~s~, Also, while the heating means 63 has been de~crib~
ed as dying the coatings 24, ~5~ 72 andlor 75 to a condition what will hold the thread means 27 and 29 in 6ecured~toge~her relationg sueh heatlng means can pro-vide such dried condition without curing of the eoat-lngs 24~25, 72 and/or 75 as in the a~orementloned UOSO
patents ~nd/or patent application, 80 that such coatings can subsequently be cured, sueh as during the formation of the inal des~.red product a previously describedO
However, it i8 to be understooed that the heaein~ mean3 .25 63 can cure the coatings 24, 25~ 72 and/or 75, if de sired, a the final product may be such cured layer mean 20~
Accordingly, lt can be seen that this invention not only provides a,n improved polym.eric product jut also this invention provides an improved method of maying such a polymeric product.
While the fonrls and methods of this inven tion now preferred have been illustrated and described as required, it is to be understood that other forms and method steps can be utilized and still fall within the scope of the appended claimsO
Claims (21)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a method of making a polymeric product having a fabric layer means provided with opposed sides and at least one polymeric means secured to said fabric layer means, said fabric layer means having been stretched in a generally transverse direction relative to the longitudinal axis of said fabric layer means, the improvement comprising the steps of forming said fabric layer means to comprise a first substantial-ly planar layer of thread means and a second substan-tially planar layer of thread means with each layer of thread means comprising a plurality of strand means disposed in a non-interconnected generally straight line side-by-side parallel relation and with said first layer of thread means having said polymeric means ap-plied thereto in liquid form and being disposed in superimposed relation against said second layer of thread means in such a manner that at least a part of said applied polymeric means in liquid form is dis-posed against said thread means of said second layer whereby said thread means of said first layer are not woven with said thread means of said second layer, said step of forming said fabric layer means also com-prising the steps of disposing said strand means of said first layer to cross said axis at an acute angle relative thereto and disposing said strand means of said second layer to cross said axis at an obtuse angle relative thereto whereby said strand means of said sec-ond layer are disposed at an angle relative to said strand means of said first layer, and thereafter, forming said polymeric means to effectively be the sole securement means securing said thread means of said first layer to said thread means of said second layer and thereby impart its flexible characteristic to said securement means between said thread means of said first and second layers by first substantially simultaneously stretching said superimposed layers in said transverse direction and then drying said applied ploymeric means to at least a condition thereof that tends to hold said strand means of said layers in said generally side-by-side parallel relation and said layers in said superimposed relation.
2. A method of making a polymeric product as set forth in claim 1 wherein said first and second layers of thread means are disposed in said superim-posed relation on a tenter frame.
3. A method of making a polymeric product as set forth in claim 1 and including the step of also applying polymeric means in liquid form to said sec-ond layer of thread means before said layers are dis-posed in said superimposed relation so that said ply-meric means on said second layer of thread means forms part of said applied polymeric means that is subse-quently dried to said condition that tends to hold said strand means of said layers in said generally side-by-side parallel relation and said layers in said superimposed relation.
4. A method of making a polymeric product as set forth in claim 3 wherein said dried polymeric means is disposed only intermediate the outer sides of said layers of thread means.
5. A method of making a polymeric product as set forth in claim 3 wherein said dried polymeric means is not only disposed on the facing sides of said layers of thread means but also is disposed on the outer sides thereof.
6. A method of making a polymeric product as set forth in claim 1 wherein said product comprises an endless power transmission belt.
7. A method of making a polymeric product as set forth in claim 1 wherein said product comprises a sheet-like strip of said fabric layer means and said polymeric means.
8. A method of making a polymeric product having a fabric layer means provided with opposed sides and at least one polymeric means secured to said fabric layer means, said fabric layer means having been stretched in a generally transverse direction relative to the longitudinal axis of said fabric layer means, the improvement comprising the steps of forming said fabric layer means to comprise a first substantially planar layer of thread means and a second substantial-ly planar layer of thread means with each layer of thread means comprising a plurality of strand means disposed in a non-interconnected generally straight line side-by-side parallel relation and with said first layer of thread means having part of said polymeric means applied thereto in liquid form and being dis-posed in superimposed relation against said second layer of thread means in such a manner that at least a part of said applied polymeric means in liquid form is disposed against said thread means of said second layer whereby said thread means of said first layer are not woven with said thread means of said second layer, said step of forming said fabric layer means also com-prising the steps of disposing said strand means of said first layer to cross said axis at an acute angle relative thereto and disposing said strand means of said second layer to cross said axis at an obtuse angle relation thereto whereby said strand means of said second layer are disposed at an angle relative to said strand means of said first layer, and, thereafter, forming said polymeric means to effectively be the sole securement means securing said thread means of said first layer to said thread means of said second layer and thereby impart its flexible characteristic to said securement means between said thread means of said first and second layers by first substantially simul-taneously stretching said superimposed layers in said transverse direction and then disposing additional polymeric means in liquid form against at least one side of said stretched superimposed layers so as to exude into said superimposed layers and then by drying said disposed and exuded and applied polymeric means to at least a condition thereof that tends to hold said strand means of said layers in said generally side-by-side parallel relation and said layers in said superimposed relation.
9. A method of making a polymeric product as set forth in claim 8 wherein said first and second layers of thread means are disposed in said superim-posed relation on a tenter frame and said additional polymeric means is disposed in liquid form against said superimposed layers while said superimposed layers are on said tenter frame.
10. A method of making a polymeric product as set forth in claim 8 and including the step of form-ing said additonal polymeric means to comprise a layer of polymeric material disposed on one of said sides of said fabric layer means and exuding into said fabric layer means to define at least part of said sole secure-ment means thereof.
11. A method of making a polymeric product as set forth in claim 10 and including the step of form-ing said additional polymeric means to comprise another layer of polymeric material disposed on the other of said sides of said fabric layer means and exuding into said fabric layer means to define at least another part of said sole securement means thereof.
12. A method of making a polymeric product as set forth in claim 8 and including the step of also applying polymeric means in liquid form to said second layer of thread means before said layers are disposed in said superimposed relation so that said polymeric means on said second layer of thread means forms part of said applied polymeric means that is subsequently dried to said condition that tends to hold said strand means of said layers in said generally side-by-side parallel relation and said layers in said superimposed relation.
13. A method of making a polymeric product as set forth in claim 8 wherein said product comprises an endless power transmission belt.
14. A method of making a polymeric product as set forth in claim 8 wherein said product comprises a sheet-like strip of said fabric layer means and said polymeric means.
15. In a method of making a polymeric product having a fabric layer means provided with op-posed sides and at least one polymeric means secured to said fabric layer means, said fabric layer means having been stretched in a generally transverse direc-tion relative to the longitudinal axis of said fabric layer means before said polymeric means is secured thereto, the improvement comprising the steps of form-ing said fabric layer means to comprise a first sub-stantially planar layer of thread means and a second substantially planar layer of thread means with each layer of thread means comprising a plurality of strand means disposed in a non-interconnected generally straight line side-by-side parallel relation and with said first layer of thread means disposed in superimposed relation against said second layer of thread means whereby said thread means of said first layer are not woven with said thread means of said second layer, said step of forming said fabric layer means also comprising the steps of disposing said strand means of said first layer to cross said axis at an acute angle relative thereto and disposing said strand means of said second layer to cross said axis at an obtuse angle relative thereto whereby said strand means of said second layer are dis-posed at an angle relative to said strand means of said first layer, and thereafter, forming said poly-meric means to effectively be the sole securement means securing said thread means of said first layer to said thread means of said second layer and thereby impart its flexible characteristic to said securement means between said thread means of said first and sec-ond layers by first substantially simultaneously stretching said superimposed layers in said transverse direction and then disposing said polymeric means in liquid form against at least one side of said stretched superimposed layers so as to exude into said superim-posed layers and then by drying said disposed and exuded polymeric means to at least a condition there-of that tends to hold said strand means of said layers in said generally side-by-side parallel relation.
16. A method of making a polymeric product as set forth in claim 15 wherein said first and sec-ond layers of thread means are disposed in said super-imposed relation on a tenter frame and said polymeric means is disposed in liquid form against said superim-posed layers while said superimposed layers are on said tenter frame.
17. A method of making a polymeric product as set forth in claim 15 and including the step of forming said polymeric means to initially comprise a single layer of liquid polymeric material disposed on said one side of said superimposed layers and exuding into and through said superimposed layers to the other side thereof so that both sides of said superimposed layers have said polymeric means thereon.
18. A method of making a polymeric product as set forth in claim 15 and including the step of forming said polymeric means to initially comprise two layers of liquid polymeric material respectively disposed on the opposed sides of said superimposed layers and exuding into the same so that both sides of said superimposed layers have said polymeric means thereon.
19. A method of making a polymeric product as set forth in claim 15 and including the step of thereafter disposing additonal polymeric means on at least one side of the thus dried polymeric means.
20. A method of making a polymeric product as set forth in claim 15 wherein said product com-prises an endless power transmission belt.
21. A method of making a polymeric product as set forth in claim 15 wherein said product com-prises a sheet-like strip of said fabric layer means and said polymeric means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48665083A | 1983-04-20 | 1983-04-20 | |
| US486,650 | 1983-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1232521A true CA1232521A (en) | 1988-02-09 |
Family
ID=23932729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000450849A Expired CA1232521A (en) | 1983-04-20 | 1984-03-29 | Polymeric product having a fabric layer means and method of making the same |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0140952A4 (en) |
| JP (1) | JPS60500970A (en) |
| KR (1) | KR910008861B1 (en) |
| AU (1) | AU575828B2 (en) |
| BR (1) | BR8406797A (en) |
| CA (1) | CA1232521A (en) |
| DE (1) | DE3490197T1 (en) |
| GB (1) | GB2151982B (en) |
| IT (1) | IT1176130B (en) |
| MX (1) | MX158053A (en) |
| NL (1) | NL8420096A (en) |
| NO (1) | NO845120L (en) |
| SE (1) | SE8406512L (en) |
| WO (1) | WO1984004369A1 (en) |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE510763C (en) * | 1930-10-23 | Hugo Hennig | Rubber drive belt | |
| US1612024A (en) * | 1925-09-24 | 1926-12-28 | Jacobs Joe | Belt |
| DE940246C (en) * | 1948-04-27 | 1956-03-15 | Pirelli | Elastic band with thread insert |
| US2985222A (en) * | 1958-09-25 | 1961-05-23 | Bjorksten Res Lab Inc | Method of making a v-belt |
| US2983637A (en) * | 1958-12-23 | 1961-05-09 | Russell Mfg Co | Gear belt |
| FR1296859A (en) * | 1961-08-02 | 1962-06-22 | Dunlop Rubber Co | Improvements made to the reinforcements of the treads of pneumatic tires |
| US3844327A (en) * | 1972-04-10 | 1974-10-29 | Owens Corning Fiberglass Corp | Vulcanizable elastomeric sheet containing cord reinforcement |
| JPS5144823U (en) * | 1974-09-30 | 1976-04-02 | ||
| US3998986A (en) * | 1975-02-03 | 1976-12-21 | Uniroyal Inc. | Conveyor belt of rubber reinforced with stitch-bonded web fabric |
| US4216856A (en) * | 1975-04-25 | 1980-08-12 | Dunlop Limited | Reinforcement for elastomeric articles |
| US3964329A (en) * | 1975-09-24 | 1976-06-22 | Dayco Corporation | Endless power transmission belt |
| SE7612194L (en) * | 1975-11-06 | 1977-05-07 | Dunlop Ltd | WAY TO MANUFACTURED REINFORCED BANDS AND STRAPS |
| US4062989A (en) * | 1976-06-14 | 1977-12-13 | M. Lowenstein & Sons, Inc. | Method and apparatus for coating moving webs and products produced thereby |
| US4127039A (en) * | 1977-01-31 | 1978-11-28 | Dayco Corporation | Endless power transmission belt |
| US4131030A (en) * | 1977-11-02 | 1978-12-26 | Dayco Corporation | Covering for power transmission belt |
| US4215589A (en) * | 1978-07-31 | 1980-08-05 | Dayco Corporation | Self orienting power transmission belt |
| FI801415A (en) * | 1979-05-05 | 1980-11-06 | Arthur Britton | ARKMATERIAL |
| US4238530A (en) * | 1979-07-24 | 1980-12-09 | Dayco Corporation | Method for producing stress-relieved fabric |
| ATE13217T1 (en) * | 1980-10-21 | 1985-05-15 | Mitsuboshi Belting Ltd | CROSS-GROOVED MULTIPLE BELT. |
| US4501771A (en) * | 1982-02-22 | 1985-02-26 | Dayco Corporation | Elastomer-coated bias reinforcement fabric and method for producing same |
-
1984
- 1984-03-29 CA CA000450849A patent/CA1232521A/en not_active Expired
- 1984-04-03 EP EP19840901842 patent/EP0140952A4/en not_active Withdrawn
- 1984-04-03 WO PCT/US1984/000519 patent/WO1984004369A1/en not_active Application Discontinuation
- 1984-04-03 BR BR8406797A patent/BR8406797A/en not_active IP Right Cessation
- 1984-04-03 DE DE19843490197 patent/DE3490197T1/en not_active Withdrawn
- 1984-04-03 AU AU28273/84A patent/AU575828B2/en not_active Ceased
- 1984-04-03 JP JP59501790A patent/JPS60500970A/en active Pending
- 1984-04-03 NL NL8420096A patent/NL8420096A/en unknown
- 1984-04-03 GB GB08429722A patent/GB2151982B/en not_active Expired
- 1984-04-09 MX MX200952A patent/MX158053A/en unknown
- 1984-04-20 KR KR1019840002099A patent/KR910008861B1/en active IP Right Grant
- 1984-04-20 IT IT20681/84A patent/IT1176130B/en active
- 1984-12-20 NO NO845120A patent/NO845120L/en unknown
- 1984-12-20 SE SE8406512A patent/SE8406512L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR8406797A (en) | 1985-03-19 |
| KR910008861B1 (en) | 1991-10-24 |
| SE8406512D0 (en) | 1984-12-20 |
| NL8420096A (en) | 1985-03-01 |
| AU2827384A (en) | 1984-11-19 |
| GB8429722D0 (en) | 1985-01-03 |
| DE3490197T1 (en) | 1985-05-02 |
| MX158053A (en) | 1988-12-29 |
| IT8420681A0 (en) | 1984-04-20 |
| EP0140952A4 (en) | 1987-11-23 |
| JPS60500970A (en) | 1985-06-27 |
| GB2151982B (en) | 1987-05-28 |
| KR840008608A (en) | 1984-12-17 |
| IT8420681A1 (en) | 1985-10-20 |
| EP0140952A1 (en) | 1985-05-15 |
| GB2151982A (en) | 1985-07-31 |
| WO1984004369A1 (en) | 1984-11-08 |
| NO845120L (en) | 1984-12-20 |
| IT1176130B (en) | 1987-08-12 |
| AU575828B2 (en) | 1988-08-11 |
| SE8406512L (en) | 1984-12-20 |
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