WO2007094207A1 - Feutre de presse pour fabriquer du papier - Google Patents

Feutre de presse pour fabriquer du papier Download PDF

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Publication number
WO2007094207A1
WO2007094207A1 PCT/JP2007/052067 JP2007052067W WO2007094207A1 WO 2007094207 A1 WO2007094207 A1 WO 2007094207A1 JP 2007052067 W JP2007052067 W JP 2007052067W WO 2007094207 A1 WO2007094207 A1 WO 2007094207A1
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WO
WIPO (PCT)
Prior art keywords
layer
wet paper
press
core
nylon
Prior art date
Application number
PCT/JP2007/052067
Other languages
English (en)
Japanese (ja)
Inventor
Akira Onikubo
Shin Kawashima
Hiroyuki Oda
Original Assignee
Ichikawa Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ichikawa Co., Ltd. filed Critical Ichikawa Co., Ltd.
Priority to CA002642541A priority Critical patent/CA2642541A1/fr
Priority to US12/223,834 priority patent/US20100163202A1/en
Priority to BRPI0707822-6A priority patent/BRPI0707822A2/pt
Priority to AU2007216016A priority patent/AU2007216016A1/en
Priority to EP07708116A priority patent/EP1985752A4/fr
Publication of WO2007094207A1 publication Critical patent/WO2007094207A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems

Definitions

  • the present invention relates to a papermaking press felt (hereinafter simply referred to as “press felt”) used in a papermaking machine.
  • press felt a papermaking press felt
  • a press device has been used to squeeze water from wet paper.
  • the wet paper on which the paper layer has been formed is squeezed through the press felt at the press nip.
  • a press device is composed of a plurality of press nips.
  • FIG. 5 is a schematic view of press ep in the press apparatus.
  • This press nip is composed of a pair of press rolls P,, P 'and a pair of press felts 11', 11 'sandwiching a wet paper web W', and the press felt of the press rolls P,, P ' Pressure is applied to 11 ', 11, and wet paper W', and water is squeezed out of wet paper W and absorbed by press felt 11 ', 11'.
  • the press felt 11 Since the pressure applied to the wet paper web W 'and the press felt 11, 11' from the center of the pressurization part (two-pipe part) to the outlet is suddenly released, the press felt 11 The volume of '., 11' expands rapidly.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2004-14 3'627
  • This is a felt composed of a base layer, a wet web side batt layer, and a press side batt layer, in which a hydrophilic non-woven fabric is arranged in the wet paper side batt layer. It is said that the rewetting phenomenon can be effectively suppressed because the water transfer action to the hydrophilic nonwoven fabric and the holding action of the transferred water are exhibited.
  • press felt for papermaking the felt compressed by pressurization is recovered without being flattened during decompression in order to maintain the function of squeezing water from wet paper (water squeezing).
  • the emphasis is also on the function of smoothing (compression fatigue resistance), the function of improving wet paper smoothness by smoothing the felt (smoothness), and hair removal / wear resistance. .
  • a press felt including a fiber having a core-sheath structure made of a two-component material is disclosed in Japanese Patent Application Laid-Open No. H8-302584 (Patent Document 2). ing.
  • a two-component material consisting of a sheath material with a low melting point and a core material with a high melting point is used as the fiber for the bat layer. It is said that the formation of a matrix can improve the dewatering performance of the press felt and increase the compression resistance.
  • Patent Documents 1 and 2 have a problem that they are easily subjected to repeated compression fatigue by a press device.
  • the press felt of Patent Document 3 has a problem in that the hair removal and abrasion of the felt is extremely poor because the adhesiveness between the bag fiber and the woven fabric by needle punching is worse than the felt using the conventional twisted yarn. It has been.
  • an object of the present invention is to provide a press felt for papermaking that suppresses the rewetting phenomenon and is excellent in smoothness / abrasion resistance / compression fatigue resistance and water squeezing ability.
  • the present invention relates to a papermaking press belt comprising a base and a vat layer comprising a wet paper side layer and a press side layer, wherein the wet paper side layer is formed from a wet paper contact side batt layer and a base side batting layer.
  • the wet paper web side batt layer is composed of a core component made of high molecular weight nylon having an absolute viscosity of 80 mPa ⁇ s or more and a sheath component made of nylon having a lower melting point than the core component.
  • the above-mentioned problem has been solved by a papermaking press felt, characterized in that the wet paper web-contacting pad pad is made of a layer of nylon that does not contain the core-sheath composite fiber.
  • the absolute viscosity is 8 O m Pa ⁇ s or more is the absolute viscosity measured at a temperature of 25 ° C by dissolving nylon with 0.5 g / 95% sulfuric acid 10 O m 1. Therefore, it can be measured with a vibration viscometer.
  • the content of the core-sheath composite fiber in the wet paper web contact side batt layer is preferably 25% to 75%.
  • the wet paper web side batt layer may have a multilayer structure, and the content of the core-sheath composite fiber may be increased stepwise from the press side of the wet paper web side batt layer toward the wet paper side. .
  • the substrate (sometimes referred to as “base layer”) is a woven fabric in which warp yarn (felt CMD direction yarn) and driving yarn (also MD direction yarn) are both woven with monofilament single yarn. It is preferable that
  • the sheath component of the core-sheath composite fiber is melted and the wet paper web side batt layer becomes dense.
  • the moisture on the press side layer is less likely to move to the wet paper side due to the wet paper web side batt layer serving as a barrier, so that the rewetting phenomenon can be suppressed.
  • the hair removal / wear resistance and compression fatigue resistance of the felt are improved. (Life) is extended and the number of felt exchanges is reduced. Hair loss due to hair removal and wear is less likely to adhere to the wet paper, improving papermaking quality and maintaining the smoothness of the wet paper contact surface.
  • the wet paper web side batt layer is composed of a core-sheath composite fiber
  • the base side batt layer formed on the wet paper side surface of the base is composed of a nylon layer that does not contain the core-sheath composite fiber. Balances smoothness, hair loss and wear resistance, compression fatigue resistance, and water squeezability Included.
  • the water permeability of the woven fabric is improved, so that a felt excellent in water squeezing can be constituted.
  • FIG. 1 is a cross-sectional view of an embodiment of a press felt according to the present invention.
  • FIG. 2 is a cross-sectional view of another embodiment of the press felt of the present invention.
  • FIG. 3 is a schematic diagram of an apparatus for confirming the effect of the press felt of the present invention.
  • FIG. 4 is a schematic diagram of an apparatus for confirming the effect of the press felt of the present invention.
  • FIG. 5 is a schematic explanatory diagram of a press device of a papermaking machine.
  • FIG. 1 is a sectional view in the CMD direction of a press felt 10 according to the present invention.
  • Machine direction (MD) is the warp direction in which the paper machine moves the press felt
  • Mcachine crossing direction (C MD) is the weft direction across the direction in which the paper machine moves the press felt. is there.
  • the press felt 10 includes a base body 30, a wet paper side butt layer 20, and a press side butt layer 23, and the wet paper side butt layer 20 has a wet paper contact side.
  • the butt layer 21 includes a base-side butt layer 2 2 disposed inside the wet paper web-side butt layer 21.
  • the wet paper web-side butt layer 21, the substrate-side butt layer 2 2, and the press-side butt layer 2 3 are composed of stable fibers, and the substrate-side butt layer 2 2 and the press-side butt layer 2 3 are each formed by needle punching.
  • the wet paper web side and the press side of the substrate 30 are entangled and integrated, and the wet paper contact side batt layer 21 is entangled and integrated with the substrate side batt layer 22 by 21 dollar punching.
  • the press felt 10 of the present invention comprises a core component made of a high molecular weight nylon having a wet paper web side batt layer 21 having an absolute viscosity of 80 mPa ⁇ s or more at a temperature of 25, and the core component.
  • the core-sheath composite fiber 41 is composed of a sheath component made of nylon having a lower melting point, and the base-side buffer layer 22 is made of conventional nylon that does not contain the core-sheath composite fiber 41. Consists of one staple fiber of fiber 42.
  • the absolute viscosity at a temperature of 25 ° C is 8 OmP a It can be measured with a vibration viscometer.
  • the core-sheath composite fiber 41 is exaggerated for convenience.
  • the viscosity of the core component that is, the molecular weight has not been considered.
  • the core component has a higher viscosity than that of the conventional material, that is, high molecular weight nylon is used, and the layer (wet paper contact side batt layer) made of the core-sheath composite fiber is used as the surface of the base on the wet paper side
  • the nylon used for the core component of the core-sheath composite fiber 41 is a high molecular weight nylon having an absolute viscosity at a temperature of 25 T of 8 OmPa ⁇ s or more and a melting point higher than that of the sheath component.
  • the core component of nylon high viscosity 8 OmPa ⁇ s or more
  • the hair removal / wear resistance and compression fatigue resistance of the flaws are improved. This is thought to be due to the fact that high molecular weight nylon increases the molecular chain and improves the mechanical properties (durability such as strength, friction and wear) due to the entanglement effect between the molecular chains.
  • nylon with an absolute viscosity of less than 80 mPa ⁇ s (medium viscosity) is used, the effects of anti-hair removal and abrasion resistance and compression fatigue resistance cannot be obtained sufficiently.
  • the nylon preferably used for the core component is preferably high molecular weight nylon 6, high molecular weight nylon 66, high molecular weight nylon 46, high molecular weight nylon 610, bulk molecular weight nylon 612, or the like.
  • ⁇ -force prolactam polymerization Nylon 6
  • polycondensation of hexamethylene diamine and adipate Nylon 66
  • polycondensation of 1,4-diaminobutane and adipate Nylon 46
  • Nylons obtained by polycondensation of nylon salts such as polycondensation of oxamethylenediamine 'sebacate (nylon 610) and hexamethylene diamine' dodecanedioate (nylon 612)
  • DSC Differential Examples thereof include aliphatic nylons having a melting point of 200 or more as measured by a scanning calorimeter.
  • the absolute viscosity of these polymer nylons at 0.5 gZ95% sulfuric acid 10 Om 1 is preferably 8 OmPa ⁇ s or more.
  • These high molecular weight nylons are known polymerization methods, or Or produced by the method of solid-phase polymerization (for example, Special Table No. 2002-5296 04) by placing polymerized nylon flakes in an inert gas atmosphere containing 120 to 200 ° C without oxygen Is used.
  • the nylon used for the sheath component of the core-sheath composite fiber 41 is a nylon having a lower melting point than the core component.
  • the core-sheath composite fiber 41 contracts and the wet paper web side batt layer 21 becomes dense, and the felt surface Smoothness is improved.
  • the base-side bat layer 22 does not include the core-sheath composite fiber 41, is configured by the normal nylon fiber 42, and only the wet paper web-side butt layer 21 includes the core-sheath composite fiber 41. .
  • smoothness, hair removal resistance / wear resistance, compression fatigue resistance, and water squeezability are provided in a well-balanced manner.
  • the core-side batt layer 22 includes the core-sheath composite fiber 41, the sheath component melts and the entire batt layer formed on the surface of the base on the wet paper web becomes incompressible, so hair removal resistance and wear resistance Although it is excellent in properties, it is inferior in water squeezing with a press.
  • the wet paper contact side batt layer 21 is preferably composed of a fiber in which a core-sheath composite fiber 41 and a normal nylon fiber 42 are mixed in a certain ratio, and thereby smoothness, wear resistance, and compression fatigue resistance. Can have a more balanced sex.
  • the blended cotton is composed of 75% to 25% content of core-sheath composite fiber 41 and 42% nylon fiber. The rate is preferably 25% to 75%.
  • the wet paper contact side batt layer 2 1 becomes less dense, so that the felt surface becomes less smooth and the rewetting phenomenon is suppressed. Not enough.
  • the felt when the content of the core-sheath composite fiber 41 exceeds 75%, the felt is excellent in smoothness and wear resistance, and the rewetting phenomenon can be effectively suppressed.
  • the butt layer 2 1 tends to fatigue compression and tends to flatten.
  • the wet paper web side batt layer 21 has a multilayer structure, and the content of the core-sheath composite fiber 41 is gradually increased from the press side of the wet paper web side batt layer 21 toward the wet paper web. Accordingly, smoothness and wear resistance can be further improved.
  • FIG. 2 shows an embodiment in which the wet paper web-side butt layer 21 has a two-layer structure of a first layer 2 1 a and a second layer 2 1 b.
  • the first layer 2 1 a Has a higher content of the core-sheath composite fiber 41 than in the second layer 21 b.
  • the wet paper web side batt layer 21 can have a structure with a good balance between rewetting and water squeezing.
  • the first layer 2 la with a high content of core-sheath composite fiber 41 becomes dense, so that it can maintain rewetting and smoothness
  • the first layer 2 lb with a low content of core-sheath composite fiber 41 has Although the compactness is low, the compressibility is contributed, so that the water squeezing is improved, and the wet paper contact side batt layer 21 can be provided with both the wettability and the water squeezing simultaneously.
  • the wet paper web side batt layer 21 is a single layer, smoothness and hair removal are maintained while wearability is maintained, and the dense layer can be composed of two layers, so that the rewetting property is further improved. In addition, it will have a synergistic effect of improving water squeezing.
  • the wet paper web-side backing layer 21 is composed of two layers, but it may be composed of three or more layers.
  • the volume ratio of the core portion to the sheath portion of the core-sheath composite fiber 41 is not particularly limited. The range is 1-1: 5, preferably 1 ⁇ .1. Also, the nylon fiber 42 that is mixed with the wet paper web side small layer 2 1, the nylon fiber 42 that constitutes the press side batt layer 2 3, and the core-sheath composite fiber 4 1 includes nylon 6, Nylon 6 6, nylon 46, nylon 6 10 and nylon 6 1 2 are suitable. ⁇ .
  • the substrate 30 is obtained by weaving a warp yarn 31 (felt CMD direction yarn) and a driving yarn 32 (also MD direction yarn) with a monofilament single yarn.
  • the woven fabric is preferably used, but the woven fabric is (2/1, 1/2), (3/1, 1/3), (5/1, 1/5), etc.
  • Heavy tissues, or laminated structures such as (single structure + double structure) and (double structure + double structure) can be used.
  • the monofilament single yarn has a diameter of 0.1 mm to 0.6 mm, and the yarn density of the tissue can be 10 to: 100 pieces / 25 mm.
  • the present invention is not limited to this, and a configuration in which MD direction yarn material and CMD direction yarn material are stacked without being woven, and a structure in which a wide band shape is obtained by winding a film, a knitted fabric, and a thin band in a spiral.
  • the substrate 30 is made of natural fibers such as wool, or synthetic fibers such as polyester, nylon 6, nylon 66, etc. that have excellent wear resistance, fatigue resistance, stretch properties, and antifouling properties. It is done.
  • the fineness of the core-sheath composite fiber 4 1.
  • a felt for No. 4 press that is used in the latter part of the press part of the paper machine, having a value of about 5 to 20 dtex.
  • the fineness of the nylon fiber 42 is about 10 to 25 decitex (dtex) in the wet paper side butt layer 20 of the pick-up felt used in the front stage of the press part of the paper machine, and the press side butt layer 2 3 It is recommended to use about 15 to 25 decitex (dtex).
  • the wet paper side butt layer 20 of the No. 2 press or No. 3 press used in the middle part of the press part of the paper machine has a pressure of about 10 to 15 decitex (dtex).
  • dtex decitex
  • the butt layer 23 on the loess side one having a fineness of about 10 to 20 dtex (dte ⁇ ) ′ is preferably used.
  • wet wet paper side pad layer 32 of the felt for No. 4 press used in the latter part of the press part of the paper machine is about 5-15 decitex (dtex), and the press side butt layer 23 is 5-20. It is recommended to use one with a fineness of about dtex.
  • the papermaking press felt of the present invention will be specifically described by the following examples. However, the present invention is not limited to these examples.
  • Nylon 6 (Strength Prolactam: melting point 220 ° C) and Copolymer Nylon 6 / ⁇ 2 (Strength Prolactam Z Laurolactam: Melting point 140 ° C), and put each into an extruder with a devolatilization port After individually feeding, the volatiles are removed in an extruder, and the molten core material nylon 6 and sheath material copolymer nylon 6 Z 12 are quantified in a molten state with a quantitative gear pump, and each core sheath is quantified. The composite spinning nozzle was supplied.
  • the core-sheath composite fiber spun through the core-sheath composite spinning nozzle is oiled while being cooled with chimney, wound once at the natural stretch ratio, then stretched, crimped and cut at a constant length, and the core-sheath composite fiber A staple fiber was manufactured.
  • MODEL-EMF spinning device manufactured by Toyo Seimitsu Kogyo can be used for the production of core-sheath composite fibers.
  • an extruder, a Nelson type multi-stage drawing machine and a winder can be used.
  • high molecular weight nylon 6 absolute viscosity 85 mP a-s at 25, melting point 220 ° C
  • medium molecular weight nylon 6 absolute viscosity 70 mP a-s at 25 ° C, melting point 220 ° C
  • the volume ratio of core to sheath is 1: 1.
  • Two types were manufactured. The one using high molecular weight nylon 6 as the core material is called composite fiber A, and the one using medium molecular weight nylon 6 is called composite fiber B.
  • Substrate Woven fabric A [240 dtex Nylon monofilament twisted (bottom twisted), and two lower twisted yarns were bundled and twisted (upper twisted), twisted yarn, MD direction yarn material and CM D direction yarn Double texture of (3Z1, 1-3) woven from wood]: Basis weight 300 gZ m 2
  • Woven fabric B [1 100 d t ex nylon monofilament single yarn woven with MD direction yarn material and CMD direction yarn material
  • Vat layer wet paper contact side batt layer (first layer) (shown as “wet paper contact fiber layer” in Table 1)) (17 dte X nylon 6 fiber and 17 dte X composite fiber A Or B stable fiber 1) with a total basis weight of 120 gZm2
  • Base basis batt layer (17 dte X nylon 6 fiber and 17 d t E X composite fiber A staple fiber) with a total basis weight of 120 / m2
  • the press side batt layer (one 17 dtex nylon 6 fiber staple fiber) with a total basis weight of 100 gZm 2
  • Hot press The felt after punching is repeatedly passed through a pair of heat calender rolls (roll temperature 1 60, press pressure 30 kg / cm) 5 times at a speed of 5 m / min, 0.5 A felt with a density of gZ cm 3 or more was obtained.
  • Tables 1 and 2 show the configurations of the felts of Examples 1 to 8 and Comparative Examples 1 to 6. (table 1 )
  • both the devices shown in Fig. 3 and Fig. 4 have a felt running speed of 80 Om / min, press pressure is 80 kg / cm. '
  • the apparatus shown in FIG. 3 has a structure in which wet paper that has been released from the two-push pressure is placed on the bottom felt 10 and conveyed. Therefore, when the wet paper wetness at the position (press outlet 1) placed and transported on the ferrule 10 is measured after the two-push pressure is removed, the wet paper that has undergone the rewetting phenomenon is measured. Moisture content data can be obtained.
  • the apparatus shown in Fig. 4 has a large area where the bottom felt 1.0 comes into contact with the press roll, and the wet paper which has been released from the two-push pressure has a very long time to contact the felts 10 and 110. It's short.
  • measuring the wetness of the wet paper at the position (press outlet 2) immediately after the release of the two-pipe pressure yields a moisture content of the wet paper that does not cause any rewetting phenomenon. .
  • the moisture content data by the apparatus in FIG. 3 and the same data by the apparatus in FIG. 4 were obtained, and the rewetting phenomenon and the water squeezing were evaluated.
  • the evaluation of water squeezing in the water content data at the press outlet 1 by the apparatus of Fig. 3, the water content of 48% or more and less than 49% was determined as (water squeezing evaluation "good"). And those with more than 49% moisture
  • a compression fatigue test was performed by applying a 5Hz pulse load at 120 kgZcffl 2 repeatedly 300,000 times. Compressive fatigue resistance is expressed as a ratio (density after test Z finished density). 1. Less than 30 is “excellent”, 1. 30 to 1.39 is “good”, 1. 40 or more “bad” It was.
  • Abrasion resistance and wear resistance were evaluated by measuring the amount of fibers dropped from the papermaking ferrule using a taper-one polishing tester based on JIS 1023-1992. Times A disk-shaped test piece was placed on a rotating turntable, and a rotating roll with high resistance was brought into contact with the test piece, and the amount of fiber falling off (hair removal / wear amount) was measured. (Load: 0.5 kg, Wheel: CS-17, Rotation speed: 3000 times, Unit: mg) Hair removal ⁇ Amount of wear of 4 Omg or less is “good”, and those exceeding 40 mg are “bad” It was.
  • Table 3 shows the measurement results and evaluation of each test.
  • Example 8 0.485 30 (good) 50 (excellent) 48.1 47.8 good good
  • Example 3 As shown in Examples 1 to 8 in Table 3, the papermaking press felt of the present invention suppresses the rewetting phenomenon, and at the same time has resistance to compression fatigue, resistance to hair removal, wear, smoothness, and water squeezing. It was confirmed that the functions were well balanced. '
  • Comparative Example 1 in which the base-side batt layer is composed of a core-sheath composite fiber has good compression fatigue resistance, hair removal resistance and wear resistance, but is inferior in felt surface smoothness.
  • Comparative Example 4 in which the content of the core-sheath composite fiber was gradually decreased from the press side of the butt layer on the wet paper contact side to the wet paper side, achieved the functions of compression fatigue resistance and rewet resistance. But smoothness is poor. This is thought to be because the second layer of the wet paper web-side cover layer containing less core-sheath composite fibers constitutes the felt surface.
  • Comparative Example 5 using medium molecular weight nylon as the core component of the core-sheath composite fiber has worse compression fatigue resistance, hair removal resistance, and wear resistance than Example 1 using high molecular weight nylon. I understand.
  • Example 8 uses a woven fabric woven with monofilament single yarn in the base layer as the base B. Therefore, from Example 1 using woven fabric woven with monofilament twisted yarn of base ftA. In addition, it was confirmed that the moisture at the press exit (1 and 2) was both low and the water squeezing was excellent.
  • the wet paper web-side batt layer serves as a barrier and can suppress the rewetting phenomenon
  • the core component of the core-sheath composite fiber is made highly viscous, that is, high molecular weight nylon is used.
  • the hair removal resistance and wear resistance and compression fatigue resistance of the felt are improved, and as a result, the life of the felt is increased and the number of felt replacements is reduced. Hair loss due to hair removal and wear may adhere to the wet paper. It reduces the papermaking quality and maintains the smoothness of the wet paper contact surface.
  • the wet paper contact side batt layer is composed of a core-sheath composite fiber
  • the base side batt layer formed on the surface of the base on the wet paper side is composed of a nylon layer that does not contain a core-sheath composite fiber Therefore, smoothness, hair removal resistance, wear resistance, compression fatigue resistance, and water squeezability are well-balanced, and by using a woven fabric woven with monofilament single yarn as the base layer, the water permeability of the woven fabric can be improved. It is possible to provide felt that is improved and has excellent water squeezing ability.

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Abstract

La présente invention concerne un feutre de presse (10) pour fabriquer du papier, comprenant un substrat (30), une couche de cuve du côté du papier humide (20) et une couche de cuve du côté de la presse (23). La couche de cuve du côté du papier humide (20) comprend une couche de cuve du côté en contact avec le papier humide (21) et une couche de cuve du côté du substrat (22). La couche de papier de cuve du côté en contact avec le papier humide (21) comprend une fibre composite de type âme-gaine (41) comprenant un composant d'âme en nylon de masse moléculaire élevée ayant une viscosité absolue non inférieure à 80 mPa.s et un composant de gaine en nylon ayant une température de fusion inférieure à celle du composant d'âme. La couche de cuve du côté du substrat (22) comprend une couche en fibre de nylon (42) sans fibre composite de type âme-gaine (41). Le composant de gaine de la fibre composite de type âme-gaine (41) est fondu pour rendre la couche de cuve du côté en contact avec le papier humide (21) dense, et, par conséquent, il est moins probable que l'humidité dans la couche de cuve du côté de la presse (23) se déplace vers le côté du papier humide, moyennant quoi on peut supprimer le phénomène de réhumidification. En outre, étant donné que la couche de cuve du côté du substrat (22) comprend une couche en nylon sans fibre composite de type âme-gaine, l'équilibre entre la douceur, la résistance au défibrage, la résistance à l'abrasion, la résistance à la fatigue par compression et le drainage de l'eau est bon.
PCT/JP2007/052067 2006-02-14 2007-01-31 Feutre de presse pour fabriquer du papier WO2007094207A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA002642541A CA2642541A1 (fr) 2006-02-14 2007-01-31 Feutre de presse pour fabriquer du papier
US12/223,834 US20100163202A1 (en) 2006-02-14 2007-01-31 Press Felt for Papermaking
BRPI0707822-6A BRPI0707822A2 (pt) 2006-02-14 2007-01-31 feltro de prensa para fabricaÇço de papel
AU2007216016A AU2007216016A1 (en) 2006-02-14 2007-01-31 Press felt for papermaking
EP07708116A EP1985752A4 (fr) 2006-02-14 2007-01-31 Feutre de presse pour fabriquer du papier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006066678A JP4157136B2 (ja) 2006-02-14 2006-02-14 抄紙用プレスフェルト
JP2006-066678 2006-02-14

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WO2007094207A1 true WO2007094207A1 (fr) 2007-08-23

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US (1) US20100163202A1 (fr)
EP (1) EP1985752A4 (fr)
JP (1) JP4157136B2 (fr)
KR (1) KR20080100418A (fr)
CN (1) CN101384770A (fr)
AU (1) AU2007216016A1 (fr)
BR (1) BRPI0707822A2 (fr)
CA (1) CA2642541A1 (fr)
TW (1) TW200736462A (fr)
WO (1) WO2007094207A1 (fr)

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EP2141283A3 (fr) * 2008-07-02 2012-04-25 Voith Patent GmbH Bande de séchage pour un dispositif de séchage par condensation
CN107858853A (zh) * 2017-10-31 2018-03-30 宿迁市神龙家纺有限公司 一种吸水造纸毛毯及其制备方法

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JP5148973B2 (ja) * 2007-11-20 2013-02-20 イチカワ株式会社 抄紙用フェルト
JP5148401B2 (ja) * 2008-07-25 2013-02-20 日本フエルト株式会社 製紙用フェルト及びその製造方法
JP5571403B2 (ja) * 2010-02-09 2014-08-13 日本フエルト株式会社 製紙用フェルトおよびその製造方法
JP5571404B2 (ja) * 2010-02-09 2014-08-13 日本フエルト株式会社 製紙用フェルトおよびその製造方法と製紙用ベルトおよびその製造方法
CN107287964A (zh) * 2017-06-13 2017-10-24 太仓市宇航造纸机械厂 一种复合造纸毡结构
CN110254015B (zh) * 2019-06-28 2021-11-23 四川环龙技术织物有限公司 一种应用于高速真空圆网造纸机毛毯的制备方法

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CN107858853A (zh) * 2017-10-31 2018-03-30 宿迁市神龙家纺有限公司 一种吸水造纸毛毯及其制备方法

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JP4157136B2 (ja) 2008-09-24
AU2007216016A1 (en) 2007-08-23
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CA2642541A1 (fr) 2007-08-23
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