Item for polymericfluorine coating and method of its manufacturing

FIELD: textile, paper.

SUBSTANCE: sheet comprises fabric, containing several yarns, besides, each yarn comprises several non-twisted threads, besides, each thread comprises a polymericfluorine adhesive coating; and a layer of the polymericfluorine coating on the specified fabric. Also the invention relates to the method for production of the specified sheet.

EFFECT: sheets for frying have higher durability and tensile strength.

15 cl, 1 ex, 2 tbl, 3 dwg

 

The technical field

The present invention relates, in General, for products with fluoropolymer coating and, in particular, to the leaves for frying, conveyor belts, and leaves grills.

Background of invention

In the restaurant industry and, in particular, in the catering quick service enterprises are moving to faster cooking methods on a more permanent basis. In addition, these enterprises are looking for ways to streamline operations, including cleaning operations. As one specific example, hamburgers often cooked in sash double-vane grill, in which heat is provided at the top and bottom. In the case of a typical hamburger grills sticks to both surfaces. Due to the lack of non-stick surface on the top plate of double-vane grill when you open the grill hamburger will be torn in two pieces, part of a hamburger will stick to both the upper and lower plates.

Accordingly, the industry has moved on a non-stick surface on the top plate. In one example uses a sheet of grill. In one conventional approach used are PTFE coated foil is pressed against the upper plate. In another example, the top plate can be covered with a sheet of glass reinforced PTFE. However, when the upper leaves of the grill was used on the bottom plate, these isdel what I did not show satisfactory characteristics.

With the bottom plate often treated harshly. Cook often scraping the bottom plate with a spatula. In addition, the bottom plate is often subjected to a more intensive cleaning. In addition, the lower plate is frequently a large amount of fat, deriving from preparing grilled foods, such as hamburgers. Currently, the industry quick service does not use sheet grill on the bottom plate.

The invention

In one specific embodiment of the invention, the product contains a fabric containing multiple yarns. Each yarn of the above multiple yarn contains multiple threads. Each thread of these threads contains fluoropolymer adhesive coating. In addition, the product contains on the fabric layer of fluoropolymer coatings.

In yet another exemplary embodiment of the invention the sheet for frying contains flat glass and a layer of fluoropolymer coating on the fabric. Flat fiberglass contains several yarns. Each yarn of the above multiple yarn contains several glass yarns. Each yarn of the above several glass contains fluoropolymer adhesive coating. The layer of fluoropolymer coating contains performalite. Sheet for roasting has the tensile strength by bending in the direction of the Foundation not less than 10 pounds and has the t satisfactory absorption characteristics.

In yet another exemplary embodiment of the invention a method of manufacturing a product includes a stage on which release the fabric. The fabric contains a few yarns. Each yarn of the above multiple yarn contains multiple threads. Each thread of these threads has fluoropolymer adhesive coating. The method includes also the stage at which the fabric is coated with a fluoropolymer coating.

In one additional embodiment, the invention is a method of cooking heat treatment includes a step in which the sheet for frying put on the surface of the frying grill, the stage at which the grill is heated, and the stage at which the food product is placed on the sheet for frying. Sheet for frying contains fabric and a layer of fluoropolymer coating on the fabric. The fabric contains a few yarns. Each yarn of the above multiple yarn contains multiple threads, and each thread of these threads has fluoropolymer adhesive coating.

Brief description of drawings

The present invention will become clearer, and its many distinguishing features are obvious to experts in this field with reference to the accompanying graphic material.

Figures 1 and 2 are illustrations of exemplary sheets for frying.

Figure 3 is an illustration of an exemplary collapsible grill.

Using the same positions in different drawings indicates similar or identical items.

Detailed description of the invention

In one specific embodiment of the invention the sheet for frying contains fabric, covered with a layer of fluoropolymer coatings. In one example, a fabric made of yarns containing multiple threads, for example, glass fibers. Each thread of these threads has an adhesive coating which, for example may be a fluoropolymer. In one particular example, each thread is pre-coated before turning into yarn, which is then injected into the tissue. In yet another embodiment, the fabric may be a flat glass. For example, each of the yarns can be made of threads twisted together. Fabric covered with a layer of fluoropolymer coatings, for example coatings of performaire. In one example, Portocolom is polytetrafluoroethylene (PTFE), fluorinated ethylene-propylene (FEP or PFA. In addition, the sheet for frying may contain upper floor, made of fluorocarbon resin. In one example, the upper floor contains perforamce. In one particular example, the sheet for frying put into folding grill.

In yet another embodiment of the invention, the method of preparation, the of food products includes a step, where sheet for frying placed on the plate grill, the stage at which the grill is heated, and the stage at which the sheet for frying put food product. Sheet for frying contains fabric, covered with a layer of fluoropolymer coatings. In addition, the stage at which the sheet for frying placed on the plate of the grill may include a stage on which a plate of grilled or sheet for frying apply a thin layer of oil, and the stage at which the sheet for frying placed on the plate grill with a thin layer of oil between the sheet for frying plate grill.

In the embodiment of the invention shown in figure 1, the sheet for frying 100 contains fabric 110, covered with a layer of fluoropolymer coating 104. Optionally, the layer of fluoropolymer coating 104 may be an upper cover 102, and, optionally, under a layer of fluoropolymer coating 104 may be placed as the bottom layer 114. As shown, the top cover 102 forms the surface of the frying 108. In the absence of the optional top cover 102, the surface of the frying 108 can be formed by a layer of fluoropolymer coating 104. In addition, the optional bottom cover 114 forms a surface 112 of contact with the grill, as shown. In the absence of the optional bottom cover 114 112 contact grill can be formed by a layer of fluoropolymer coating 104.

the Cagnes 110 contains multiple yarns 106. In one example, the yarn 106 bound to get fabric. Although figure 1 yarn 106 shown evenly distributed, yarn 106 may contact and in bunches. In one particular example, the fabric 110 is a flat glass fabric in which the yarn 106 contain threads introduced in yarn 106 no twist, and yarn 106 is introduced into the fabric 110 without twisting. For example, yarn 106 may be interwoven in the fabric 110 without twisting. As a result, nodules less noticeable in comparison with the knots found at the usual twisted yarns.

In one specific embodiment of the invention, each filament yarn 106 can be pre-treated before introduction into yarn 106 or in the fabric 110. For example, each thread may be coated with an adhesive coating. In one particular example, the adhesive coating includes a fluoropolymer, such as performalite. In one example, the fluoropolymer is polytetrafluoroethylene (PTFE) or a copolymer or mixture. In another example, the adhesive coating contains a fluorinated copolymer of ethylene-propylene (FEP) or its mixture.

In one specific embodiment of the invention, the fabric has a weight in the range from 0.7 to 2.3 ounces per square yard, the direction of 0.8-1.5 ounces per square yard, or even a mass of 1.0 to 1.5 ounces per square yard. The fabric can have a yarn within 20-80 yarns per inch, for example, 30 to 70 yarns per inch, or even 40-65 yarns per inch. Cu is IU, the fabric can have a thickness in the range of 1-3 mils, the direction within 1 to 2 mils, or, in particular, in the range of 1.5-2 mils.

In addition, the fabric can have an open area comprising 1-30% of the surface area. For example, the open area of the fabric may be 3-20%, for example 3-10%. After coating the layer of fluoropolymer coating sheet for frying can be almost without holes, for example, having a 0% open area.

Optional fabric 110 generally can be pre-processed using the sizing. For example, the fabric 110 can be pre-processed using silicone sizing.

As shown, the fabric 110 is introduced into the layer of fluoropolymer coating 104. Alternatively, the layer of fluoropolymer coating may be placed on either side of the fabric 110. In particular, the fabric 110 may reside or be located closer to the surface 112 of the contact with the grill.

In one embodiment of the invention the layer of fluoropolymer coating 104 contains a fluoropolymer. An exemplary fluoropolymer may be formed from homopolymer, copolymer, ternary copolymer or mixture of polymers formed from a monomer, such as tetrafluoroethylene, HEXAFLUOROPROPYLENE, chlorotrifluoroethylene, triptorelin, vinylidenefluoride, viniferin, performability ether, performatively ether or any combination. When Erny fluoropolymer comprises polytetrafluoroethylene (PTFE), fluorinated copolymer of ethylene-propylene (FEP), a copolymer of tetrafluoroethylene with performanceperformance ether (PFA), copolymer of tetrafluoroethylene and performatively ether (MFA), a copolymer of ethylene and tetrafluoroethylene (ETFE), a copolymer of ethylene and chlorotrifluoroethylene (ECTFE), polychlorotrifluoroethylene (PCTFE), vinylidenefluoride (PVDF), a ternary copolymer including tetrafluoroethylene, HEXAFLUOROPROPYLENE and vinylidenefluoride (THV), or any mixture or any alloy. In one example, the fluoropolymer contains polytetrafluoroethylene (PTFE), fluorinated ethylene-propylene (FEP), PFA, vinylidenefluoride (PVDF) or any combination. In particular, the fluoropolymer may contain polytetrafluoroethylene (PTFE), fluorinated ethylene-propylene (FEP), PFA or any combination. In yet another embodiment, the fluoropolymer may be performalite, such as PTFE or FEP.

In one particular example, the fluoropolymer contains performalite. For example, performalite may contain polytetrafluoroethylene (PTFE), fluorinated ethylene-propylene (FEP)polymer of perforamce or any mixture or a copolymer. In one specific example, the layer of fluoropolymer coating 104 contains polytetrafluoroethylene (PTFE).

Optional, on top of the layer of fluoropolymer coating 104 may run the top cover 102. In one example, the upper cover 102 includes a fluoropolymer, such as refocaliser. In one particular example, the top cover 102 contains a thermoplastic processible fluoropolymer. For example, the top cover 102 may contain PFA or the mixture or copolymer. Similarly, under a layer of fluoropolymer coating 104 may be lower floor 114. In one example, the bottom cover 114 includes a fluoropolymer, such as performalite. In one specific example, the bottom cover 114 includes a thermoplastic processible fluoropolymer. For example, the bottom cover 114 may contain PFA or the mixture or copolymer. In one example, the bottom cover 114 and the upper cover 102 form a symmetrical layers on both sides of the layer of fluoropolymer coating 104. Alternatively, the bottom cover 114 and the upper cover 102 is formed asymmetrical layers around the layer of fluoropolymer coating 104. In another example, the sheet for frying 100 may contain one or the other, both cover - top cover 102 and bottom cover 114, or none of them.

For further illustration of the nature of the fabric of figure 2 is an illustration of a part of the sheet for frying 200 containing layer fluoropolymeric coating 204 and the optional top coating 202. In addition, it is shown yarn 210 tissue. Each yarn 210 contains multiple threads 206. Each thread 206 contains adhesive coating 208. In one specific primenenii 206 can be made of glass, for example fiberglass. Each thread 206 is covered with an adhesive coating 208 to the introduction of the yarn 210, introduced into the fabric. For example, the thread 206 may cover soon after processing or formation. In particular, each thread 206 separately contains adhesive coating 208. This adhesive coating 208 is different from the adhesive coating of the yarn as a whole, in which more than one thread can be inside one matrix adhesive coating. Accordingly, each thread 206 having a separate adhesive coating 208 may be entered into yarn 210, such as free woven yarn, which may be interwoven in the fabric.

Let's go back to figure 1, sheet for frying 100 may be required distinguishing features. In particular, the sheet for frying 100 has a thickness of not more than 3.2 mil. For example, the thickness may be no more than 3 mils, for example not more than 2.8 mils. In addition, the surface of the frying 108 sheet for frying 100 may have a surface roughness (Ra) of not more than 100 microinches, measured with Mitutoyo Surftest SJ201P. For example, the surface roughness (Ra) can be no more than 70 microinches.

In addition, the sheet for frying 100 shows the required mechanical properties. For example, a sheet for frying 100 may have a desired tensile strength in both directions - towards the base and in the weft direction. In addition, the sheet for frying 100 can have the desired strength is to break trapezoidal method. In addition, the sheet for frying 100 can maintain the necessary mechanical properties after mechanical impact. For example, a sheet for frying 100 may be required by the tensile strength with the bending and the desired tensile strength trapezoidal method with a bend. In addition, the sheet for frying 100 may demonstrate the required performance under fatigue test, bending test on the machine MIT Flex.

In one specific embodiment of the invention, the tensile strength may be measured according to the standard of the American society for testing and materials (ASTM D902. Sheet for frying 100 may have a tensile strength in the direction of the Foundation not less than 30 pounds, for example at least 50 pounds. In another example, the tensile strength in the weft direction can be at least 45 pounds, for example, not less than 65 pounds or even at least 70 pounds.

Sheet for frying 100 may have a desired tensile strength trapezoidal method, measured by the standard ASTM D751, as modified by ASTM D4969. For example, tensile strength trapezoidal method sheet for frying 100 may not be less than 3.5 pounds, for example not less than 4.0 pounds.

In addition, the sheet for frying 100 may be required by the tensile strength and the tensile strength trapezoidal method after mechanical impact, e.g. the measures of the bend. In particular, the tensile strength and the tensile strength trapezoidal method can be measured after a single bending roller weighing 10 pounds, applied parallel to the crease. The tensile strength of the material after bending roller weighing 10 pounds is denoted as tensile strength by bending, and tensile strength trapezoidal method after bending is referred to as the tensile strength trapezoidal method with a bend. In particular, the sheet for frying 100 may have a tensile strength in the direction of the substrate with a bend not less than 10 pounds, for example at least 15 pounds, or even not less than 17 pounds. In addition, the sheet for frying 100 can exhibit a tensile strength trapezoidal method with a bend not less than 0.5 pounds, for example, not less than 1.0 lb.

The durability of the sheet for frying 100 by mechanical action can be characterized and characteristics of the fatigue test, bending test on the machine MIT Flex. For example, a sheet for frying 100 may have characteristics in fatigue test, bending test on the machine MIT Flex not less than 10,000, for example at least 15,000, at least 20,000, or even not less than 25,000. Characteristics when tested in Flexural endurance test on the machine MIT Flex is measured with replays at 2 pounds per sample width of ˝ inch in accordance with the method of testing the bending strength according to ASTM D2176-63J.

Sheet for frying 100 may be necessary rigidity or drape. For example, the rigidity of the sheet for frying 100 may be at least 70 mm, as measured by Federal test method 191-5206. In particular, the rigidity of the sheet for frying 100 may be at least 73 mm, for example not less than 74 mm, not less than 75 mm, or even not less than 77 mm As a rule, the hardness does not exceed 200 mm

Next sheet for frying 100 visible when tested in cooking. In particular, the sheet for frying 100 is resistant to capillary absorption of fat and burn fat, but also provides the necessary use on the burgers. In one example, the capillary absorption is tested by exposing the sheet grill hot fat for 16 hours at a temperature of 400°F, as described in the examples below. When the fat is absorbed into the fabric or sheet for frying, it usually becomes charred and weakens the fabric. In addition, it usually changes color as the fabric, and the individual threads. Options exercise sheet for frying 100 described above, the capillary absorption of no, or almost no, charring fat no, or almost no, and change the color of the yarn or fabric is absent or almost absent. Thus, embodiments of the sheet for frying 100 receive a satisfactory absorption characteristics. Evaluation of absorption is determined according to the method, opisannogo the examples below. Similarly, embodiments of the sheet for frying receive satisfactory characteristics of the permeability of the ink, as described in the examples below.

Durability can be determined by testing sheet for frying 100 in a typical cooking conditions. In particular, the durability is determined by putting a sheet for frying 100 on the main grill round the catering enterprise fast service. Embodiments of the sheet for frying 100 demonstrate the durability of not less than 5 days, for example at least 7 days without significant loss of properties.

In another example, the sheet for frying 100 has a dielectric strength of at least 2500 B. for Example, the dielectric strength can be in the range 2500-6000 B, for example in the range 3000-6000 Century In one example, the required dielectric strength may indicate a tight fit of the layers of the fluoropolymer and the absence of impurities.

In addition, the sheet for frying 100 provides the required quality for cooking, providing for cooked products, such as hamburger, the desired surface texture and use. Assessment Browning is determined according to the method described below, and indicates the nature of Browning of the food product cooked on the sheet for frying 100, compared with not posredstvennyi cooking on the plate grill. For example, satisfactory non-stick characteristics indicate that the use of food products cooked on the sheet for frying 100, similar to the use with the direct cooking on the plate grill. Poor non-stick characteristics may indicate perezhivanie, or crust on the sheet for frying, or lack of use. In particular, use can be visually identified by the relative darkness of the prepared product.

In one specific embodiment, the invention leaves for frying can inform on the surface of the grill. For example, the grill can be hinged grill 300, as shown in figure 3. In one example, the grill includes a top plate 302 and bottom plate 304. Plate grill (302, 304) are heated. Food product 310 is placed between the plates of the grill (302, 304), then the plate grill (302, 304) are closed for cooking food product 310.

Sheet for frying 306 can be placed between the food product 310 and the top plate 302 grill. In particular, the sheet for frying 306 may be mechanically fastened to the top plate 302.

Sheet for frying 308 may be applied to the bottom plate 304. In one example, the sheet for frying 308 may be mechanically fixed to the bottom plate 304. Alternatively, the sheet for frying 308 may proleptic the bottom plate 304. For example, between the bottom plate of the grill 304 and the sheet for frying 308 may be covered with a thin layer of liquid, high temperature resistant oil, which effectively glues sheet for frying 308 to the bottom plate 304 of the grill due to surface tension.

In practice leaves for frying (306, 308) put on their respective plates (302, 304), and plate (302, 304) are heated. Food product 310 is placed between the plates on top of the sheet for frying 308 and under the sheet for frying 306, after which the plate (302, 304) are brought together to heat the respective upper and lower surfaces of the food product 310. At the end of the hinged cooking grill open, separating the upper plate 302 from the bottom plate 304. The food product is recovered, leaving the sheets 306 and 308 of the grill in place.

The leaves of the grill can be produced by a method including the stage at which release the fabric, such as flat glass, which contains threads with individual adhesive coating. The fabric can be covered by dipping into the dispersion containing fluoropolymer. The excess dispersion from the fabric can be taken away, and to remove solvents and seal fluoropolymer dispersion of the fluorocarbon resin can be heated. The coating process can be performed one or more times, for example, at least two times or even at least three times. Optional, the above one or both surfaces covered with fabric can cause the upper floor. For example, the coated fabric can cover dipping to include other fluoropolymer. Alternatively, the coated fabric can be laminated fluoropolymer film, or on one or more surfaces coated fabric can ekstradiroval the top floor.

In one particular example, the sheet for frying is made by a process of coating base woven product or a reinforcing material (e.g. fabric) material with low surface energy, low friction coefficient, such as a fluorinated polymer. One such fluorinated polymer is PTFE. Carrying a woven product or a reinforcing material otmachivajut from the roll and cover, at least, on the one hand, a suspension containing particles of fluorinated polymer, dispersed in a liquid medium. In one specific embodiment, the suspension consists of an aqueous dispersion of PTFE Dupont® TE, which added surfactant. Alternatively, the suspension may not contain a surfactant.

For removing excess slurry from the host woven products provided by the blade or metering rods. After that, the suspension is dried and baked to obtain a layer on the host woven product. In one specific embodiment, the applied slurry is dried at a temperature of from AP is sustained fashion 150 to about 300°F and bake at a temperature of from about 550 to about 720°F. The layer thickness can be increased by repeating the coating process. In one exemplary embodiment, bearing woven product can cover the suspension, the suspension is dried, and the dried suspension before sintering to cause the second floor.

The open surface of the fluorinated polymer, perform prihvatyvaya. For example, this surface may be subjected to chemical etching of the etching composition, such as a mixture of metallic sodium, naphthalene and a glycol ether and a mixture of metallic sodium and anhydrous ammonia. In other exemplary embodiments, the implementation of this surface to perform prihvatyvaya by electrochemical machining, coating of metal and deposition of metals and/or metal oxides. For example, the deposition of metals and metal oxides may include chemical vapor deposition and physical vapor deposition.

In another exemplary embodiment, the surface of the fluorinated polymer, perform prihvatyvaya by soaking the material is colloidal silica. For example, the fluorinated polymer may contain 25-70 wt.% colloidal silica. In another example, the surface can perform prihvatyvaya by applying to the surface coating of FEP or PFA, including colloidal silica. A coating of FEP or PFA su is at and baked or alloy with the surface of the fluorinated polymer, such as PTFE. In one specific embodiment, the surface of the fluorinated polymer is covered with a mixture of DuPont FEP TE-9568, dispersion of colloidal silica Ludox® LS-30, manufactured by W.R.Grace Company, and nonionic surfactant Triton® X-100. Alternatively, this surface can be left untreated.

Optional, on top of the first layer can apply a second layer of fluoropolymer. For example, the second layer may contain a second fluorocarbon resin such as PFA. The drawing of the second fluoropolymer may be performed using a method of coating by immersion, similar to the method described above. Alternatively, the second layer can be applied by extruding the layer on top of the first layer. In another example, the second layer may be laminated on the first layer, for example by heat lamination.

In exemplary embodiments of the invention the thickness of the layer of fluorinated polymer is usually about 0.2 to 12 mils. For example, the thickness may be about 0.2 to 4 mils, such as about 0.5 to 3 mils. The second layer may have a thickness of about 0.1-5 mils, for example 0.1 to 3 mils, or even about 0.1 to 1 mil.

Although embodiments of the invention described above is described in relation to use on grills, sheet for frying can be performed in a conveyor belt, such as continuous conveyer what I tape. In yet another embodiment, the sheet for frying can be applied as a coating on a conveyor belt or as cladding container for thermal treatment of food products.

Specific embodiments of the sheet for frying possess the required technical advantages. In particular, leaves for frying possess greater durability and tensile strength. In particular, the coated sheets are resistant to bending, the capillary absorption of fat and burn. As described later, the test demonstrated durability in tough conditions with the required characteristics in terms of cooking. Leaves for frying provide a durable film that supports the quality of the food.

Example

Prepared samples containing coated fabric, PTFE, and, optionally, coated with a top coating. The shape, thickness and weight of the samples are shown in table 1.

Table 1
Samples of leaves for frying
123456
Style 10610610612801080106
The fluorocarbon on the threadsNoNoNoYesYesNo
Pre-processingNoZ6011 silaneZ6020 silaneNoNoNo
FloorPTFEPTFEPTFEPTFEPTFEPTFE
The upper floorOption. PTFENoNoNoNoNo
Thickness (Mila)2,32,22,32,82,82,3/td>
Weight (ounces per square yard)3,262,972,94,1a 3.92,8

Mechanical properties

Samples are tested for tensile strength according to ASTM D902 and tensile strength trapezoidal method ASTM D751, as modified by ASTM D4969. Hardness is measured in accordance with ASTM D4032.

In addition, samples have on the mechanical properties after mechanical impact. The tensile strength with the bending and tensile strength trapezoidal method with bending experience after bending roller weighing 10 pounds. For tensile strength by bending the samples cut with a width of 1 inch and a length of 7 inches and bend in the middle. Samples on bending rolled once with a roller weighing 10 pounds parallel to the crease. The tensile strength of the sample with a bend test in accordance with ASTM D902. For tensile strength trapezoidal method with bending samples cut out in accordance with the requirements of test method tensile strength trapezoidal method. Samples of the stack so that will be torn curve, i.e. at the end of a cut, which starts tearing. Fold rolled once the roller mass is 10 pounds parallel to the crease. Tensile strength trapezoidal method with a bend test in accordance with ASTM D751, modified ASTM D4969. Characteristics when tested in Flexural endurance test on the machine MIT Flex is measured in accordance with test method of Flexural strength according to ASTM D2176-63 J.

Evaluation of capillary absorption

Capillary absorption experienced by the influence of the sample the hot fat for 16 hours. Baking stones are shooting film. To remove the film put two layers of fiberglass 1080. Vacuum grease completely cover the ring. This ring is fixed to the sheet sample using vacuum grease to assure the total absence of leakage points, and the sheet sample is placed in the pan. In the reservoir formed inside the ring, add the fat to the Burger. Avoid splashing over the ring put a metal foil. The furnace is heated to a temperature of 400°F, and the pan placed in an oven for 16 hours. Then the pan and the sample is removed and allowed to cool.

After cooling ring and the sheet is inspected for leaks. Fiberglass 1080 inspected for the presence of fat. The absence of fat indicates the absence of capillary absorption. Tested leaves are viewing under the microscope on the color of glass yarns and threads. Color changing light of edelstam of capillary absorption. If capillary absorption is not observed, the sample receives a satisfactory rating.

Check penetrating paint

The penetration of the ink is measured by placing a drop of penetrant Met-L-Chek VP-30 on the sample on a flat surface. Drop left overnight, and then conduct a visual inspection. It is expected that the drop will continue to be in shape and will not spread across the surface. If you crawl, the sample passed the test. Penetrant absorbed cloth, and viewed under a microscope. If the penetrant enters and capillary covers more than 1/8 inch, the sample passed the test. In the absence of penetration, or if the capillary absorption occurred not more than 1/8 inch, the sample passes the test.

Assessment Browning

Burgers enterprise quick service (QSR) grilled QSR without sheet for roasting for 40 seconds and 38 seconds as the control. At least two hamburger cooked on the grill with QSR sheet for frying. The sample of people are asked to evaluate whether these, at least, two burgers, grilled with a sheet for frying, lighter, darker, or about the same color as the control. If the color is the same as that of the control sheet for frying receives a satisfactory rating.

Durability

Leaves samples put on the grill QSR and round-the-clock and is use for cooking on the average main grill QSR. The number of days before significant tearing is defined as durability. In order to obtain a satisfactory evaluation, the number of days must be at least 5 days, preferably not less than 7 days.

Dielectric strength

The dielectric strength of the samples was measured according to ASTM D149.

Table 2
Properties sample
123456
Tensile strength - based (lbs)332131595757
Tensile strength - weft (lbs)413956757936
Tensile strength notched sample - based (lbs)1,000,83 2,434,734,332,2
Tensile strength notched sample - ducks (lbs)1,631,931,004,034,131,2
Roughness, Ra (microinches)676354576483
CrackingNoNoNoNoNoNo
Tensile strength with a bend - based (lbs)5,54,54,316,4to 19.94
Tensile strength notched specimen with a bend - based (lbs)0,90,50,0 1,01,90,0
MIT Flex91234566359825615249605410
Cracks after the test on the test machine MIT FlexNoNoNoNoNoNo
The penetration of air000000
Evaluation of capillary absorptionPassesPassesPassesPassesPassesFails
Check penetrating paintPassesPassesPassesPasses PassesDo not pass
Assessment BrowningPassesDarkerDarkerPassesPasses
Dielectric strength (In)16793673399450153025
Stiffness (mm)676475777463

Table 2 shows the characteristics of the images used for this test. In particular, the sample 6, not containing fibres coated with an adhesive that has a low mechanical properties after mechanical impact and absorbs the fat. In addition, the sample 6 is not tested on durability. Other samples (e.g., samples 2 and 3)containing fabric, pre-treated with silane, are the best estimates of capillary absorption, but possess poor mechanical properties after exposure. Samples 4 and 5, containing threads with adhesives is th floor, pass the test on the absorption, use and durability. In addition, samples 4 and 5 provide the desired mechanical properties to the mechanical impact and after it.

It should be noted that does not require all the operations described above in the General description or the examples that part of specific operations may not be necessary, and that in addition to those described may be performed one or more additional operations. In addition, the order in which operations are listed, does not necessarily represent the order in which they are executed.

1. Sheet for frying, comprising: a fabric containing multiple yarn (210), and each yarn (210) contains several non-twisted filaments (206), and each thread (206) contains fluoropolymer adhesive coating (208); and a layer of fluoropolymer coatings (204) on the specified fabric.

2. Sheet for frying according to claim 1, where the fabric is a flat glass.

3. Sheet for frying according to claim 1 or 2, where each thread (206) contains fiberglass.

4. Sheet for frying according to claim 1, where the fluoropolymer adhesive coating (208) contains performalite.

5. Sheet for frying according to one of claims 1, 2 or 4, also containing silane treatment on the fabric.

6. Sheet for frying according to one of claims 1, 2 or 4, where the layer of fluoropolymer coatings (204) contains performalite.

7. Sheet for frying according to one of claims 1, ili 4, also containing a second fluoropolymeric layer (202), lying on top of the first layer of fluoropolymer coatings (204).

8. Sheet for frying according to one of claims 1, 2 or 4, having a thickness of not more than 3.2 mil.

9. Sheet for frying according to one of claims 1, 2 or 4, having a hardness of at least 70 mm

10. Sheet for frying according to one of claims 1, 2 or 4, having satisfactory characteristics absorption.

11. Sheet for frying according to one of claims 1, 2 or 4, having satisfactory characteristics of the permeability of the paint.

12. Sheet for frying according to one of claims 1, 2 or 4, which is a plate for grilling.

13. Sheet for frying according to one of claims 1, 2 or 4, which is a conveyor belt.

14. A method of manufacturing a sheet for roasting, including: the supply of tissue, and the tissue contains several yarns, each yarn contains several non-twisted filaments, and each filament has a fluoropolymer adhesive coating; and covering the fabric with a layer of fluoropolymer coatings.

15. The method according to 14, including additional capping layer fluoropolymeric coating top coating layer.



 

Same patents:

FIELD: textile industry.

SUBSTANCE: method includes treatment of material with solution of fluorine-containing compound and further removal of dissolvent. Fluorine-containing compound is represented by 2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoro-N-[3-(triethoxysilyl)propyl]-heptanamide, with structural formula of CF3-(CF2)5-C(O)-HN-(CH2)3-Si(OC2H5)3. Dissolvent is represented by weakly polar organic dissolvent from the following row: ethyl alcohol, isopropyl alcohol, acetone, tetrahydrofuran, toluene or supercritical carbon dioxide. Material is cloth or item of cloths of the following row: cotton, wool, wear-jacquard, jeans, polyester cloths. After removal of dissolvent, water-repellent agent may additionally be fixed through treatment with hot air or by means of glasing. Invention provides for imparting the material with effect of superb water repellency, characterised by value of contact angle of soaking with water of at least 120° as drop slides along material surface without wetting, besides produced protective coating is resistant to actions of washing, and superb water repellency effect of washed materials is recovered by means of temperature treatment. Treated textile materials assessed by point scale of method "ZM" have very good oleophobic properties.

EFFECT: method is easy to realise and does no require signification costs.

14 cl, 4 tbl, 6 ex

The invention relates to the final finishing of textile materials, in particular to the composition for complex finishing fabrics

FIELD: chemistry.

SUBSTANCE: coating contains a complex of an ionic fluoropolymer and a counter-ion agent. The counter-ion agent contains ions with antimicrobial activity (Ag, Zn,Cu, Au, Pt, Pd, Ir, Sn, Bi) and combinations of these ions or their precursors with quaternised ammonium compounds and/or cationic polyelectrolytes. The coating is deposited on a polymer base (substrate). The substrate is a fluoropolymer. A mixture of an ionic fluoropolymer or its precursor and a counter-ion agent, which contains ions with antimicrobial activity, or its precursor is prepared. The mixture is deposited on the substrate. Articles with the antimicrobial coating are used to produce, for example, a piece of clothing, a filter element, a ventilation element, a protective coating and a medical article.

EFFECT: invention possesses antimicrobial and antifungal properties.

31 cl, 6 dwg, 11 ex

FIELD: textile, paper.

SUBSTANCE: fabric contains threads and gaps between threads, at the same time gaps between threads have average width of more than 100 mcm. At least one of threads consists of many fibres. The specified at least one thread has cavities between fibres, at the same time cavities are filled with polymer material. Gaps remain open, and size of gaps remains same as before treatment. Polymer material is located substantially in cavities of a thread and covers fibres available inside relative to the external surface of the specified thread.

EFFECT: filling of cavities between fibres with polymer material prevents water absorption by the specified gaps and results in reduced absorption of water by the fabric.

56 cl, 13 dwg, 5 tbl, 2 ex

The invention relates to the production of woven filter media

FIELD: textile fabrics, paper.

SUBSTANCE: invention is related to treatment of cordage used in industrial fishing. Article is submerged into composition for treatment and pulled through it. Composition contains latex BSM-65 of A or B brand, wax emulsion VE-40, water and dye, if required. Then article is preliminarily dried at 40±5°C, the first stage of drying is carried out at 60±10°C for 16-18 minutes. The second stage is realised at 80±10°C for 16-18 minutes and thermally treated at 130±10°C for 1.5-3.5 minutes.

EFFECT: production of flexible, plastic and brightly coloured articles.

3 cl, 4 tbl

The invention relates to the field of light industry, and more specifically to processing and rope products used in industrial fisheries and other sectors of the economy

The invention relates to equipment rubber and textile industry and is designed to spin yarns in the process of processing an impregnating composition in the manufacture of, for example, fan belts and technical fabrics

The invention relates to the textile and apparel industries textile industry and can be used for processing yarn, cotton, viscose staple fibre, Dacron, wool and other threads, used in the manufacture of textile and clothing products of both regular and special, footwear, leather goods

The invention relates to weaving production of light industry

The invention relates to the textile and apparel industries textile industry and can be used for processing cotton, viscose staple, Mylar and other threads, used in the manufacture of garments of both regular and special purpose shoes, skin-haberdashery

FIELD: textile fabrics, paper.

SUBSTANCE: invention is related to treatment of cordage used in industrial fishing. Article is submerged into composition for treatment and pulled through it. Composition contains latex BSM-65 of A or B brand, wax emulsion VE-40, water and dye, if required. Then article is preliminarily dried at 40±5°C, the first stage of drying is carried out at 60±10°C for 16-18 minutes. The second stage is realised at 80±10°C for 16-18 minutes and thermally treated at 130±10°C for 1.5-3.5 minutes.

EFFECT: production of flexible, plastic and brightly coloured articles.

3 cl, 4 tbl

FIELD: textile, paper.

SUBSTANCE: sheet comprises fabric, containing several yarns, besides, each yarn comprises several non-twisted threads, besides, each thread comprises a polymericfluorine adhesive coating; and a layer of the polymericfluorine coating on the specified fabric. Also the invention relates to the method for production of the specified sheet.

EFFECT: sheets for frying have higher durability and tensile strength.

15 cl, 1 ex, 2 tbl, 3 dwg

Sizing machine // 2516845

FIELD: textiles, paper.

SUBSTANCE: sizing machine comprises a rack with warping shafts, a pulling device, a glue box, a dryer, leases, a spacing reed and an outlet device. According to the invention, between the pulling device and the warping shafts parallel to the latter a belt conveyor is mounted, with the substrate of segment section located inside, which is in contact with the upper branch of the conveyor belt, and on the conveyor belt on its both sides outside the filling working with the pressing cones are located.

EFFECT: installation of this conveyor enables to provide the additional twist to warp threads, which in turn enables to reduce the hairiness and to improve the strength characteristics of the yarn.

3 dwg

Sizing machine // 2564622

FIELD: textiles, paper.

SUBSTANCE: sizing machine comprising a rack with warper shafts, a pulling device, an adhesive device, a drying device consisting of drums of preliminary and final drying, between which a vibratory cylindrical element is located, an outlet pneumatic nozzle of circular cross section located under it with two guide slotted opposing slots and a guide roller; a price field, an emulsifying device, a sliding row, a winding mechanism with weaver beam, it additionally comprises two input suction pneumatic nozzles, the guide slots of which are funnel-shaped and located opposite the respective guide slots of the outlet nozzle.

EFFECT: improvement of quality of sizing by dividing the warp threads directly in the area of the drying device.

1 dwg

FIELD: textile, paper.

SUBSTANCE: fabric contains threads and gaps between threads, at the same time gaps between threads have average width of more than 100 mcm. At least one of threads consists of many fibres. The specified at least one thread has cavities between fibres, at the same time cavities are filled with polymer material. Gaps remain open, and size of gaps remains same as before treatment. Polymer material is located substantially in cavities of a thread and covers fibres available inside relative to the external surface of the specified thread.

EFFECT: filling of cavities between fibres with polymer material prevents water absorption by the specified gaps and results in reduced absorption of water by the fabric.

56 cl, 13 dwg, 5 tbl, 2 ex

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