CN104066880B - Nonwoven fabric of long fibers of flexibility and excellent wear resistance and application thereof - Google Patents

Nonwoven fabric of long fibers of flexibility and excellent wear resistance and application thereof Download PDF

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Publication number
CN104066880B
CN104066880B CN201380005386.9A CN201380005386A CN104066880B CN 104066880 B CN104066880 B CN 104066880B CN 201380005386 A CN201380005386 A CN 201380005386A CN 104066880 B CN104066880 B CN 104066880B
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Prior art keywords
woven fabrics
nonwoven fabric
long fibers
abrasion performance
spun
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CN104066880A (en
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坂本浩之
吉田英夫
皆川直史
田边博司
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Dongyang Textile Mc Co ltd
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Toyobo Co Ltd
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02—Compresses or poultices for effecting heating or cooling
    • A61F2007/0225—Compresses or poultices for effecting heating or cooling connected to the body or a part thereof

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

The problem that the invention solves the problems that is in that, it is provided that flexibility, excellent wear resistance nonwoven fabric of long fibers, be particularly suitable for disposable body heating thing nonwoven fabric of long fibers。The health heating thing non-woven fabrics of the present invention is a kind of nonwoven fabric of long fibers, its for by spun-bond process manufacture, utilize the hot pressing direct type spun-bonded non-woven fabrics that a pair engraved roll/flat roll be heated and crimp and obtain, wherein, described non-woven fabrics is that the KES bending stiffness of non-woven fabrics is 0.05～0.30gf cm by the non-woven fabrics formed containing the long fibre that more than 95% polyethylene terephthalate, birefringence are 0.07～0.122/ cm, the abrasion performance grade of non-woven fabrics meets following formula (1)～(3)。E1 >=3 ... (1) E2 >=1 ... (2) E1-E2 >=1 ... (3) E1: the abrasion performance grade in the embossing face of non-woven fabrics, E2: the abrasion performance grade in the back-pressure flower face of non-woven fabrics。

Description

Nonwoven fabric of long fibers of flexibility and excellent wear resistance and application thereof
Technical field
The present invention relates to flexibility, excellent wear resistance, suitable to the nonwoven fabric of long fibers making the bag-shaped base material used。More specifically, the nonwoven fabric of long fibers of thing base fabric of warming oneself suitable in disposable body is particularly related to。
Background technology
All the time, as cloth being made packaging material that are bag-shaped and that load powder, shot-like particle therein, use thin film, fabric, nonwoven fabric of long fibers etc.。Particularly warming oneself in thing purposes in disposable body, be generally filled into inside bag by the compositions of the heat release by exposure to air, life of product is subject to the strong impact of the breathability of packaging material, uses and is easily controlled the apertured film of breathability, micro-porous membrane etc.。But, these thin film lack flexibility, and use sense has problems, and not yet propose to meet breathability simultaneously and control the thin film with use sense。It addition, thin film also has crackly problem。
For the problem eliminating use sense, such as, in patent documentation 1,2, as disposable body heating thing packaging material, in order to prevent the sense of touch of the distinctive adhesion of thin film, stiff skin feel etc., make it have the sense of touch of cloth, and give the character being not easily broken of packing material, it is proposed that non-woven fabrics lamination is worked into the material on thin film。But, when using existing non-woven fabrics, if considering being not easily broken and fluffing few of packaging material, then hardening and stiff sense increases, otherwise, if there is fiber sense of touch and keeping flexibility, then the problem that there is fluffing, shape keeping property variation。
As the method eliminating the problems referred to above, for instance, in patent documentation 3, it is proposed that the method adjusting the flexibility utilizing embossing processing to give concavo-convex non-woven fabrics and the joint of laminated film and to improve contact surface with skin。But, in said method, also without the research of flexibility carrying out improvement non-woven fabrics, owing to utilizing lamination the disengaged portion of non-woven fabrics and laminated film entity to be engaged, thus the pliability of non-woven fabrics is limited, the problem that there is the flexibility that cannot give full play to non-woven fabrics。
It addition, the method proposing the thickness and apparent density that limit non-woven fabrics in patent documentation 4 and improveing warming function。But, the initial heat that said method have adjusted spontaneous hot body merely with thickness moves, it does not have carry out improving the research of the flexibility of non-woven fabrics, heat sealability, shape keeping property, is susceptible to unfavorable condition in practical use as disposable body heating thing。
Modification method as plyability, for instance propose the method being coated with low-melting-point resin epithelium on the fiber surface of non-woven fabrics one side in patent documentation 5。The method needs to add complicated painting process, and cost increase is inevitable。It addition, the problem of the flexibility of non-woven fabrics self and heat sealability and thermostability is not also solved。
It addition, improve, as utilizing, the method that plyability improves shape keeping property, for instance patent documentation 6～8 proposes the method by heat bonding composition fiber lamination。These methods are due to by low melting point composition fiber, therefore, although can carry out lamination at low temperatures, but the problem that there is poor heat resistance。
Similarly, patent documentation 9 proposes the laminated nonwoven fabric using low-melting fiber non-woven fabrics and low melting point thin film, low temperature seal etc. excellent。In the method, although low temperature seal is good, but the problem that the thermostability that can remain non-woven fabrics is insufficient。
Method as improvement flexibility, for instance propose in patent documentation 10,11 and constitute the method that the fiber of non-woven fabrics uses flat cross section fiber。In these methods, as the advantage improved beyond flexibility, disclose following effect: owing to using flat cross section fiber, therefore the flatness of non-woven fabrics improves, and printing is improved；And, lower thickness, heat conductivity becomes good。Really, when using flat cross section fiber, on the direction that cross section second moment is low, bending stiffness reduces, and on the high direction of cross section second moment, rigidity significantly improves, it is difficult to give the flexibility in whole direction。And then, due to flattening, it is impossible to give the flexibility brought by thickness。Accordingly, there exist the problem becoming the such contact sense of sensitive paper and the texture of softness cannot be given。
Method as the flexibility improving non-woven fabrics, such as, in patent documentation 12, propose to use the poly terephthalic acid 1 with retractility, ammediol ester and give the method for texture of softness, patent documentation 13 proposes, polybutylene terephthalate (PBT) blends non-crystalline polyester, reduces raw-material modulus, thus the method giving flexibility and heat sealability。In these methods, although flexibility improves, but due to fiber softening, therefore there is the weak and crackly problem of non-woven fabrics intensity。
As it has been described above, present situation is, rely on the improvement of existing disposable body heating thing packaging material, it is impossible to all meet the heat sealability of flexibility, abrasion performance and shape keeping property, non-woven fabrics。
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 51-23769 publication
Patent documentation 2: Japanese Unexamined Patent Publication 55-59616 publication
Patent documentation 3: Japanese Unexamined Patent Publication 2-297362 publication
Patent documentation 4: Japanese Unexamined Patent Publication 3-1856 publication
Patent documentation 5: Japanese Unexamined Patent Publication 9-300547 publication
Patent documentation 6: Japanese Unexamined Patent Publication 8-131472 publication
Patent documentation 7: Japanese Unexamined Patent Publication 10-314208 publication
Patent documentation 8: Japanese Unexamined Patent Publication 10-328224 publication
Patent documentation 9: Japanese Unexamined Patent Publication 11-56894 publication
Patent documentation 10: Japanese Unexamined Patent Publication 2004-24748 publication
Patent documentation 11: Japanese Unexamined Patent Publication 2004-24749 publication
Patent documentation 12: Japanese Unexamined Patent Publication 11-89869 publication
Patent documentation 13: Japanese Unexamined Patent Publication 2007-105163 publication
Summary of the invention
The problem that invention to solve
The present invention is the present situation in view of above-mentioned prior art and makes, and its object is to nonwoven fabric of long fibers that provide flexibility, abrasion performance and shape keeping property excellent, warm oneself thing base fabric suitable in disposable body。
For solving the scheme of problem
The present inventor etc. conduct in-depth research to reach above-mentioned purpose, found that can solve the problem that the problems referred to above by means shown below, thus completing the present invention。That is, the present invention is as described below。
1. a nonwoven fabric of long fibers, it is for manufacture by spun-bond process, utilize the hot pressing direct type spun-bonded non-woven fabrics that a pair engraved roll/flat roll is heated and crimps and obtain, molten polymer is sprayed by described spun-bond process from spinning nozzle, air stream at a high speed is utilized to draw, thus being refined, stretch, fiber is dispersed on mesh belt and makes sheet, wherein, described nonwoven fabric of long fibers is by containing more than 95% polyethylene terephthalate, birefringence is the non-woven fabrics of the long fibre formation of 0.07～0.12, the KES bending stiffness of non-woven fabrics is 0.05～0.30gf cm2/ cm, the abrasion performance grade of non-woven fabrics meets following formula (1)～(3)。
E1≥3…(1)
E2≥1…(2)
E1-E2≥1…(3)
E1: the abrasion performance grade in the embossing face of non-woven fabrics, E2: the abrasion performance grade in the back-pressure flower face of non-woven fabrics。
2. according to the nonwoven fabric of long fibers described in above-mentioned 1, it is made up of long fibre, described long fibre is formed by polyester, and described polyester is to mix the incompatible with A composition of 0.05～4.0 weight % relative to polyethylene terephthalate (A composition) and have the thermoplastic polystyrene based copolymer (B component) of glass transition temperature of 120～160 DEG C and the polyester that obtains。
3. according to the nonwoven fabric of long fibers described in above-mentioned 1 or 2, wherein, the area occupation ratio of thermo-compressed part is 5～30%。
4. a film composite, it is to be engaged with thin film in the back-pressure flower face of the non-woven fabrics according to any one of above-mentioned 1～3。
5. packaging material, it uses the film composite described in above-mentioned 4。
6. a disposable body heating thing, it uses the film composite described in above-mentioned 4。
The effect of invention
The nonwoven fabric of long fibers of the present invention is positively retained at flexibility, abrasion performance, form maintenance aspect are able to maintain that the mechanical characteristic of sufficient durability, deformation during due to heating easily and heat sealability is also excellent。Therefore, even if the nonwoven fabric of long fibers of the present invention especially omits film laminating and can be used for disposable body heating thing base fabric, therefore, health heating thing can be manufactured and do not damage soft texture, it also is able to contribute to performance, cost reduction, is exceedingly useful health heating thing base fabric nonwoven fabric of long fibers。
Accompanying drawing explanation
Fig. 1 is the cross-section photograph of the thermo-compressed part of existing non-woven fabrics。
Fig. 2 is the cross-section photograph of the thermo-compressed part of the non-woven fabrics of the present application。
Detailed description of the invention
The nonwoven fabric of long fibers of the present invention is hot pressing direct type spun-bonded non-woven fabrics。Staple fiber nonwoven fabric can cause that fiber ends is fluffed, therefore not preferred。As long as nonwoven fabric of long fibers is owing to would not fluff fibre cutting, therefore the present invention uses the non-woven fabrics formed by long fibre。The manufacture method of nonwoven fabric of long fibers there is also multiple, from utilizing high speed spinning to be easily controlled mechanical characteristic, having large-duty aspect, selects spun-bonded non-woven fabrics。
The nonwoven fabric of long fibers of the present invention contains the 95 above polyethylene terephthalate of weight %。Polyethylene terephthalate is common polymer excellent on calorifics/mechanics, due to used as primary raw material, therefore, it is possible to provide the commodity of low price。
In the present invention, it is also preferred that use B component relative to polyethylene terephthalate (A composition) combination。About B component, as preferred thermoplastic resin, thermoplastic polystyrene based copolymer can be listed。B component is not by having and the compatibility of A composition, thus having in A composition the self-existent characteristic as island component, in addition, the specific glass transition temperature that glass transition temperature by being set as being used for the A composition of sea component is higher, thus B component plays the effect accepting spinning tension and suppress the oriented crystalline of polyester。As B component, such as, styrene methyl methacrylate-copolymer-maleic anhydride the resin PLEXIGLAShw55 of RohmGmbH&Co.KG (commercially available product such as have) with the glass transition temperature of 122 DEG C, the styrene-maleic anhydride copolymer resin (commercially available product such as has the SARTOMER SMA1000 manufactured) with the glass transition temperature of 155 DEG C just can expect higher oriented crystalline inhibition with a small amount of addition, so particularly preferably。It should be noted that when the glass transition temperature of B component is lower than 120 DEG C, oriented crystalline inhibition tails off, and does not therefore recommend in embodiments of the present invention。On the other hand, by adding B component, thus making drawn yarn, and the degree of orientation can be suppressed, it is possible to take into account the balance of flexibility and abrasion performance。
In the polyester of the present invention, B component is preferably 0.05～4.0 weight % relative to the blending ratio of A composition, is more preferably 0.08～3.0 weight %, more preferably 0.1～1.5 weight %。When the combined amount of B component is lower than 0.05 weight %, oriented crystalline inhibition tails off, and the degree of orientation and the proportion of fiber uprise, and flexibility and heat sealability reduce, therefore not preferred。When combined amount is more than 4.0 weight %, during high speed spinning, broken end becomes apparent upon, spinning becomes cannot be carried out, and in the low speed spinning region that will not break end, can only obtain the low-down product of the degree of orientation of fiber, not only can only obtain the non-woven fabrics that intensity is more weak, and productivity ratio is also poor, thus not preferred。
The long stapled birefringence of the non-woven fabrics constituting the present invention is 0.06～0.12。When birefringence is lower than 0.06, mechanical characteristic is poor, and abrasion performance, form maintain poor performance, therefore not preferred。During more than 0.12, rigidity increases, and the texture as non-woven fabrics is also impaired, therefore not preferred。The birefringence of the present invention is more preferably 0.07～0.10。
The nonwoven fabric of long fibers of the present invention is hot pressing direct type non-woven fabrics。When being processed by acupuncture interleaving treatment, current interleaving treatment etc. and carry out making composition fiber produce, in the cross-wise direction of non-woven fabrics, the process entwined, even if using long fibre, fiber also can be cut off, it is easy to produces fluffing, therefore not preferred。It addition, compared with hot pressing direct type, man-hour increases, energy usage, material loss increase, therefore environmentally also not preferred。
Hot pressing direct type non-woven fabrics described herein refers to localized heat crimp type (embossing processing) non-woven fabrics utilizing a pair engraved roll/flat roll。When whole fever sensation of the face crimp type (calendering processing), thermo-compressed is throughout whole time, and filming by entire surface, flexibility reduces, therefore not preferred。
In the present invention, local crimp type non-woven fabrics in order to meet flexibility, abrasion performance and different from common thermo-compressed processing conditions when, carry out thermo-compressed processing。A roller carved in the middle of a pair thermo-compressed roller is set to be engraved as the thermo-compressed roller of convex form pattern, another thermo-compressed roller being set to there is flat surfaces。And then, it is necessary to the temperature on the roller surface carved is set as 200 DEG C～260 DEG C, the temperature on flat roll surface is set as 100 DEG C～180 DEG C。
By within the scope of said temperature by the surface set of a roller be high temperature, another roller surface set be low temperature, it is possible to obtain the non-woven fabrics that texture is controlled also maintains certain level in soft level and abrasion performance first。
By carrying out above-mentioned thermo-compressed processing, the nonwoven fabric of long fibers of the present invention becomes the non-woven fabrics in thermo-compressed part with feature。That is, relative to as shown in Figure 1, the thermo-compressed part that processes when existing thermo-compressed, the thermo-compressed part of the nonwoven fabric of long fibers of the present application is structure as shown in Figure 2。Namely, about side, embossing face, the fiber of face side is heat fusing when thermo-compressed is processed, fibers melt integration, become film like, on the other hand, about back-pressure flower face (another surface) side, the fiber of face side adds only a part heat fusing in man-hour in thermo-compressed, becomes the structure of the melted integration of a part of fiber。Its result, obtains flexibility, nonwoven fabric of long fibers that abrasion performance is all met first。
Preferred compression joint area rate in embossing processing is 5～30%。When compression joint area is lower than 5%, fiber each other cannot be fully fixing, causes the reduction of the reduction of hot strength, abrasion performance。Otherwise, when compression joint area rate is more than 30%, fiber cannot follow the trail of the deformation of the bending for non-woven fabrics, and texture is hardening, therefore not preferred。
The KES bending stiffness of the nonwoven fabric of long fibers of the present invention is preferably 0.05～0.30gf cm2/ cm。Bending stiffness is lower than 0.05gf cm2During/cm, excessively soft as base fabric, treatability is poor。It addition, bending stiffness is more than 0.30gf cm2During/cm, flexibility is poor, and texture is deteriorated, therefore not preferred。KES bending stiffness is more preferably 0.05～0.25gf cm2/ cm, more preferably 0.08～0.20gf cm2/cm。
The abrasion performance of the nonwoven fabric of long fibers of the present invention meets following formula (1)～(3)。
E1≥3…(1)
E2≥1…(2)
E1-E2≥1…(3)
E1: the abrasion performance grade in the embossing face of non-woven fabrics, E2: the abrasion performance grade in the back-pressure flower face of non-woven fabrics。
The embossing face of the nonwoven fabric of long fibers of the present invention is abrasion performance grade more than 3。This is because, when abrasion performance grade is lower than 3, utilizes hands etc. to produce fluffing when applying friction, not only result in degraded appearance, but also cause that the intensity of non-woven fabrics reduces。
It addition, back-pressure flower face (another surface) of the nonwoven fabric of long fibers of the present invention is abrasion performance grade more than 1。This is because, when abrasion performance grade is lower than 1, operation when non-woven fabrics manufactures or during product manufacturing thereafter is substantially reduced by property。
And then, the abrasion performance grade in the embossing face of the nonwoven fabric of long fibers of the present invention is the value of the abrasion performance grade low more than 1 than back-pressure flower face (another surface)。Back-pressure flower face will not be touched by hands etc., it is not required that abrasion performance grade, is therefore that relatively low value is also without problem。
It addition, in the present invention by non-woven fabrics and pellicular cascade time, by the back-pressure of non-woven fabrics flower face and film laminating。This is because, even if abrasion performance grade is low, owing to utilizing thin film to protected from abrasion, therefore it is that relatively low value is also without problem。Stacking with thin film can use the extruding layer platen press being directly expressed on non-woven fabrics base material by the thin film of semi-molten state, use the laminating method of bonding agent (being roughly divided into " wet type lamination " (using water system bonding agent or aqueous dispersion bonding agent), " dry lamination " (using solvent system bonding agent or reaction is bonding agent), " hot melt lamination " (hot-melt adhesive) according to the kind of bonding agent), but is not limited to this。And then, by by the back-pressure of the non-woven fabrics of present invention flower face and film bond, and by compared with time bonding for existing non-woven fabrics, it is possible to obtain the result that bonding force improves。It is thought that because extrusion lamination improves the anchoring effect of film resin, and bonding agent method improves the permeability of bonding agent。
Long stapled fiber number about the non-woven fabrics constituting the present invention, it does not have be particularly limited to, it is preferred to be able to maintain that 0.5～5dtex of spreadability and flexibility。It is more preferably 1～4dtex, more preferably 1.5～3dtex。
Long stapled cross sectional shape about the non-woven fabrics constituting the present invention, it does not have be particularly limited to, it is possible to use circular cross-section, odd-shaped cross section, hollow section, hollow profile cross section, from the view point of flexibility, it is preferred to circular cross-section。
Weight per unit area about the non-woven fabrics of the present invention, it does not have be particularly limited to, during as disposable body heating thing base fabric, from the view point of flexibility and spreadability, it is preferred to 15～60g/m2, be more preferably 20～50g/m2, more preferably 25～40g/m2。
Embodiment
Embodiment described below illustrates the present invention, but the present invention is not limited to these embodiments。It should be noted that the evaluation of the characteristic recorded in embodiment utilizes following method。
(birefringence)
Utilization is provided with the polarizing microscope of Berek compensator (BerekCompensator), is obtained from non-woven fabrics or the meansigma methods knitting the filamentary n=5 that sheet takes out by retardation and fibre diameter, as the birefringence (Δ n) of fiber。
(the compression joint area rate of non-woven fabrics)
Cut into 30mm in arbitrary 20 positions square, shoot the photo of 50 times with SEM。Shooting photographic printing is become A3 size, cuts crimping unit are, obtain area (S0)。Then, the pressure contact portion area (S only cutting pressure contact portion in crimping unit are is obtainedp), calculate compression joint area rate (P)。Obtain the meansigma methods of 20 places this compression joint area rate P。
P=Sp/S0(n=20)
(bending stiffness of non-woven fabrics)
Using the KES-FB2 (KAWABATASEVALUATIONSYSTEM-2PUREBENDINGTESTER) that KATOTECHCO .LTD. manufacture, it is square that 10cm made by sample, is maintained at by sample on the chuck at 1cm interval, at curvature-2.5～+2.5cm-1Scope in, with 0.50cm-1Deformation velocity carry out pure bending test, obtain bending stiffness (B)。
(abrasion performance of non-woven fabrics)
Dae Young Co., Ltd.'s science essence device is used to make manufactured " learning vibration shape product dyed thereby friction firmness testing machine ", using non-woven fabrics as sample, friction cloth uses canequim 3, maneuvering load 500gf, back and forth rub for 100 times with Rubbing number, evaluate the fluffing of nonwoven surface, abrasion state (meansigma methods of n=5) according to following benchmark by visually confirming。
0 grade: damage is big
1 grade: in damage
2 grades: damage little
3 grades: not damaged, there is fluffing to produce, but quantity is few
4 grades: not damaged, there is fluffing to produce, but quantity is few
5 grades: not damaged, without fluffing
(glass transition temperature and fusing point)
Gather resin sample 5mg, by utilize differential scanning calorimetry (DSC) (TAinstruments company manufacture Q100) in a nitrogen atmosphere from 20 DEG C using 10 DEG C/min be warming up to 300 DEG C time the temperature of exothermic peak position evaluate as glass transition temperature, the temperature of endothermic peak position is evaluated as fusing point。
(weight per unit area of non-woven fabrics)
The quality of the per unit area that will measure according to JISL1906 (2000) is as weight per unit area (g/m2)。
(fiber number)
By the fiber of composition non-woven fabrics from any 5 position samples, utilize optical microscope to select 20 from each position, evaluate single fiber diameter (amounting to 100)。Using the meansigma methods of this fibre diameter as constitute fiber fibre diameter。It addition, use density gradient column to measure the proportion of the fiber from any 5 position samples, obtain meansigma methods。Fiber number is obtained by this fibre diameter and density。It should be noted that be difficult to when profiled-cross-section obtains fibre diameter, the fibre section of SEM photograph is utilized to obtain。
<embodiment 1>
Use spunbond spinning equipment, the nozzle that uses nozzle spinning nozzle to be L/D=3.0 the polyethylene terephthalate (hereinafter referred to as PET) of intrinsic viscosity 0.62, carry out melt spinning at spinning temperature 295 DEG C, single hole spray volume under 0.7g/ minute, with 5000m/ minute tractive of spinning speed, piling up on mesh belt, sheet knitted by the long fibre obtaining fiber number 1.8dtex。Then, use the knurling rolls of compression joint area rate 22%, under knurling rolls surface temperature 250 DEG C, flat roll surface temperature 150 DEG C, line pressure 30kN/m, carry out crimping processing, obtain weight per unit area 35g/m2Nonwoven fabric of long fibers。The non-woven fabrics obtained is the non-woven fabrics of flexibility, excellent wear resistance。The details of the non-woven fabrics obtained is shown in table 1。
<embodiment 2>
Except being added with 0.4% styrene methyl methacrylate-maleic anhydride resin (PLEXIGLASHW55 (hereinafter referred to as " HW55 ") of RohmGmbH&Co.KG) in polyethylene terephthalate, operate similarly to Example 1, obtain nonwoven fabric of long fibers。The non-woven fabrics obtained is the non-woven fabrics of flexibility, excellent wear resistance。The details of the non-woven fabrics obtained is shown in table 1。
<embodiment 3>
Except with weight per unit area for 40g/m2Mode adjust outside the speed of mesh belt, operate similarly to Example 2, obtain nonwoven fabric of long fibers。The non-woven fabrics obtained is the non-woven fabrics of flexibility, excellent wear resistance。The details of the non-woven fabrics obtained is shown in table 1。
<embodiment 4>
Except the addition of HW55 is changed to except 0.8%, operate similarly to Example 2, obtain nonwoven fabric of long fibers。The non-woven fabrics obtained is the non-woven fabrics of flexibility, excellent wear resistance。The details of the non-woven fabrics obtained is shown in table 1。
<embodiment 5>
Except embossing compression joint area rate is changed to except 11%, operates similarly to Example 4, obtain nonwoven fabric of long fibers。The non-woven fabrics obtained is the non-woven fabrics of flexibility, excellent wear resistance。The details of the non-woven fabrics obtained is shown in table 1。
<comparative example 1>
Except embossing adds the knurling rolls surface temperature in man-hour, flat roll surface temperature is all changed to except 250 DEG C, operates similarly to Example 1, obtains nonwoven fabric of long fibers。The abrasion performance of the non-woven fabrics obtained is good, but KES bending stiffness is high, and as health heating thing base fabric, texture is poor。
<comparative example 2>
Except embossing adds the knurling rolls surface temperature in man-hour, flat roll surface temperature is all set to, except 190 DEG C, operate similarly to Example 1, obtain nonwoven fabric of long fibers。The flexibility of the non-woven fabrics obtained is good, but abrasion performance is low, as health heating thing existing problems on using。
[table 1]
Industrial applicability
The nonwoven fabric of long fibers of the present invention can provide flexibility and excellent wear resistance, be suitable for as the nonwoven fabric of long fibers making the bag-shaped base material used。More specifically, enable in particular to provide the nonwoven fabric of long fibers being applicable to disposable body heating thing base fabric。

Claims (6)

1. a localized heat crimp type spun-bonded non-woven fabrics, its for by spun-bond process manufacture, utilize the localized heat crimp type spun-bonded non-woven fabrics that a pair engraved roll/flat roll be heated and crimp and obtain, molten polymer is sprayed by described spun-bond process from spinning nozzle, air stream at a high speed is utilized to draw, thus being refined, being stretched, fiber is dispersed on mesh belt and makes sheet
Wherein, described localized heat crimp type spun-bonded non-woven fabrics is that the KES bending stiffness of non-woven fabrics is 0.05～0.30gf cm by the non-woven fabrics formed containing the long fibre that more than 95% polyethylene terephthalate, birefringence are 0.07～0.122/ cm, the abrasion performance grade of non-woven fabrics meets following formula (1)～(3),
E1≥3…(1)
E2≥1…(2)
E1-E2≥1…(3)
E1: the abrasion performance grade in the embossing face of non-woven fabrics, E2: the abrasion performance grade in the back-pressure flower face of non-woven fabrics。
2. localized heat crimp type spun-bonded non-woven fabrics according to claim 1, it is made up of long fibre, described long fibre is formed by polyester, and described polyester is to mix the incompatible with A composition of 0.05～4.0 weight % and the polyester having the thermoplastic polystyrene based copolymer of glass transition temperature of 120～160 DEG C and B component and obtaining relative to polyethylene terephthalate and A composition。
3. localized heat crimp type spun-bonded non-woven fabrics according to claim 1 and 2, wherein, the area occupation ratio of thermo-compressed part is 5～30%。
4. a film composite, it is to carry out engaging with thin film by the back-pressure flower face of the localized heat crimp type spun-bonded non-woven fabrics according to any one of claims 1 to 3。
5. packaging material, it uses the film composite described in claim 4。
6. a disposable body heating thing, it uses the film composite described in claim 4。
CN201380005386.9A 2012-01-11 2013-01-10 Nonwoven fabric of long fibers of flexibility and excellent wear resistance and application thereof Active CN104066880B (en)

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PCT/JP2013/050258 WO2013105587A1 (en) 2012-01-11 2013-01-10 Long-fiber non-woven fabric with excellent softness and excellent abrasion resistance and use thereof

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KR101884500B1 (en) 2018-08-30
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