CN101407957A - Yarn for composing cutting-proof and attrition resistant fabric surface - Google Patents
Yarn for composing cutting-proof and attrition resistant fabric surface Download PDFInfo
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- CN101407957A CN101407957A CNA2007101635168A CN200710163516A CN101407957A CN 101407957 A CN101407957 A CN 101407957A CN A2007101635168 A CNA2007101635168 A CN A2007101635168A CN 200710163516 A CN200710163516 A CN 200710163516A CN 101407957 A CN101407957 A CN 101407957A
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Abstract
The invention relates to a yarn used for composing anti-cutting and wear resistant fabric surfaces, which is characterized in that: the yarn is obtained by carrying out spinning to high-tenacity polyamide artificial fibers, the tenacity of the fibers is more than 4.5cN/dtec, and the fiber length of the fibers is 40 to 170mm.
Description
Technical field
The present invention relates to a kind of yarn that is used to constitute the fabric face of cutting-proof and attrition resistant.
Background technology
Can know by document US 3 883 898, GB 1 586 890, US 4 777 789, US 4 004 295, GB 2 018 323, DE 1 610 495 and EP 0 118 898, utilization has the fibrous polymer (polymere fibreux) of multifrequency nature (nature), whether no matter be to strengthen by the inorfil or the filament of for example glass or metal, it is possible obtaining good anti-cutting characteristic.
Should be noted that the anti-cutting characteristic stipulated by EN 388 standards in Europe, this standard definition five kinds of performance classes that are called as grade, this performance class from 1 to 5 also increases along with the rank of performance.
In the non-enhanced product based on organic fiber, the selection of material is quite strict.Common employed material is PPTA (PPTA), liquid crystal polymer (LCP) or High molecular weight polyethylene, and promptly it has the molar weight greater than 600000 gram/moles.The fiber of Xing Chenging can use separately or combine with polyamide fiber thus.
All these polymer that are called as engineering polymers have higher modulus (module) and very high mechanical strength jointly.But this modulus is seldom greater than 100GPa, and tensile strength is greater than 2000MPa simultaneously.
But the very high modulus value of these of organic fiber is well below the modulus value of inorfil correspondence, and these inorfils are carbon, diamond dust (SiC) or superalloy type.
Generally speaking, higher modulus value and hardness are equivalent in meaning, and make the extremely difficult thing that holds on of operator usually, and make them uncomfortable.In this case, the operator can not wear protector, and under most situation, employed these protectors are glove-like.
For most application, these gloves weave on special equipment, and the gloves that these equipment make production not need to do over again become possibility.
Usually use three kind equipments, this three kind equipment according to they plane No. (jauge), be that the knitting needle number of per inch is defined.
Can make heavy gloves (gant lourd) by plane No. 7 defined first kind equipment, this gloves are protectives, but easy operating not.Respectively by plane No. be 10 and plane No. be that the 13 defined second and the 3rd kind equipment is respectively applied for and makes medium gloves and first-class gloves.
Medium gloves are the most frequently used, particularly in auto industry, machinery and power engineering, glass industry, packaging industry and other carrying place.It is the gloves that 10 specification is made that these industry usually utilize with plane No., and satisfies the requirement of the grade 3 that EN 388 standards are limited.
Except that the above-mentioned shortcoming relevant with the hardness of engineering polymers, these products are still very expensive.In some industry, this forces the policymaker to accept inappropriate solution usually, for example mitten or leather gloves, and therefore make the operator not only feel uncomfortable but also emit injured danger.
In addition, product has produced the problem of cost problem and damage to the environment in the recycling (recyclage) in latter stage in service life.
Have two kinds of solutions, promptly controlled cleaning is abandoned and is incinerated.Under latter event, some polymer can produce harmful substance, and for example hydrogen cyanide (HCN) and other are not wished the compound that occurs.
Summary of the invention
Therefore, the objective of the invention is, by providing a kind of yarn that is used to constitute the fabric face of cutting-proof and attrition resistant to overcome these shortcomings, this yarn has satisfied the requirement of the grade 3 of EN 388 standards, improve user's the comfortableness and the reproducibility of made product simultaneously, and reduced their production cost.
For this reason, theme of the present invention is a kind of yarn that is used to constitute the fabric face of cutting-proof and attrition resistant, it is characterized in that it obtains by the high tenacity polyamide artificial fibre is spinned, the toughness of this fiber is greater than 4.5 lis of ox/dtexs, and the fibre length of this fiber is 40 to 170mm.
According to first embodiment, this fiber forms by cracking, cutting, combing or traction conversion, and has 65 to 140mm length.
According to second embodiment, this fiber forms by the cottonize conversion, and has 40 to 65mm length.
Preferably, this yarn comprises the vinal of HPF (high-performance fiber) type, and the modulus of this fiber is greater than 10GPa.
This fibrid makes the cutting performance that improves yarn become possibility.
According to other characteristic of the present invention, this yarn comprises polyamide- nylon 6,6 fibers.
This fibrid has improved the anti-wear performance of yarn.
Advantageously, the ratio of high tenacity polyamide be whole yarns gross weight 15 to 85%.
Preferably, the ratio of polyamide be whole yarns gross weight 5 to 30%.
According to a feature of the present invention, the fineness of high tenacity polyamide fiber is 0.5 to 8 dtex.
According to a selection of the present invention, the fineness of HPF polyamide fiber is 0.5 to 8 dtex.
Advantageously, all the yarn counting arrives metric count 50 for metric count (Nm) 2.5.
According to an alternative, yarn creates with the form of elementary yarn, and the twist multiplier of this elementary yarn is 30 to 90.
According to another kind of possibility, yarn creates with the form of twist yarn, and the twist multiplier of this twist yarn is 25 to 85.
The invention still further relates to a kind of fabric face, this surface is made by yarn according to the present invention.
Description of drawings
Under any circumstance, the present invention will well be understood by the following explanation of carrying out with reference to accompanying drawing.
Fig. 1 shows the chart of cutting index variation, the function of the fibre composition content that this cutting index is a yarn.
The specific embodiment
In order to produce, two kinds of all reproducible polymer have been used, that is: according to yarn of the present invention
-high tenacity polyamide also is referred to as HT-PA; With
-HPF (high-performance fiber) type polyvinyl alcohol also is referred to as HPF-PVA.
These two kinds of polymer are hemicrystalline thermoplastics.More particularly, employed high tenacity polyamide can be the type that is used to strengthen tire and forcing hose, and it is not used in first-class fabric usually, but it has presented anti-cutting characteristic preferably.
This yarn comprises the polyamide-nylon 6 of high tenacity, 6 fibers (fibres de polyamidehaute t é nacit é de type polyamide 6,6), its toughness is greater than 4.5 lis of ox/dtexs, and unit count (titre unitaire) is at 2.5 to 7 dtexs.Have at fiber under the high-intensity situation of 6 to 12 lis of ox/dtexs, these fibers are to obtain by slow progressive cracking technology.Yet they present higher percentage elongation when fracture, and the modulus of this product is less than 10GPa.This low modulus makes that knitted glove to be produced is comfortable for the wearer.
In addition, this yarn comprises the HPF vinal, and its modulus is greater than 10GPa.This fibrid is generally used for strengthening cement (ciment).
These fibers are because they have the higher mechanical strength of about 11 lis of ox/dtexs, and the time have 8% percentage elongation and be selected in fracture, and this has given the modulus of the about 20GPa of these fibers.These fibers have the fineness of 2 to 5 dtexs, and, have at fiber under the situation of higher intensity, make by slow progressive cracking technology.
High tenacity polyamide fiber and HPF vinal have the average length of compatible with spinning process (compatible), promptly 40 arrive 170mm, are preferably 80 to 110 millimeters.
This yarn is preferably made by HT-PA artificial fibre and HT-PVA artificial fibre are spinned.According to a yes-no decision, they also can only be made by the HT-PA artificial fibre.
With HT-PA fiber and HPF-PVA fiber and polyamide- nylon 6,6 fiber filaments mixed also be possible, this fiber filaments can for example be equivalent to 15% to 25% of yarn all-mass.This mixture can make antiwear characteristic be improved.
Employed yarn is preferably the Nm28/2 type, i.e. two strands of twist yarns (fil retordu endeux brins), and for this yarn, the yarn of 28 kms can obtain by 1 kilogram material.
This yarn is made of elementary yarn and secondary yarn.For every yarns, define twist multiplier, this coefficient is derived by following equation:
T＝α(Nm)
1/2
In the formula, T=twist circle/rice;
α=twist multiplier (zero dimension);
Nm=metric count rice/gram.
The twist multiplier α of the elementary yarn of Nm25/1 (35.7 dtex) is 30 to 90.The twist multiplier of twist yarn is 25 to 85.Should be noted that, more particularly, twist multiplier comfort level and wear-resisting aspect exert one's influence.This parameter has less influence for the anti-cutting characteristic.
Best half measure is to be that about 60 elementary yarn and twist multiplier are that about 55 twist yarn is realized by twist multiplier.Under the situation of adding polyamide filament, the twist multiplier of this polyamide filament is substantially equal to the twist multiplier of twist yarn.
In order to check whether this yarn makes fabric face to be produced can satisfy the requirement of the relevant cutting protection of EN 388 standards, gloves are to weave on 10 the braiding apparatus in plane No..Then, these gloves detect according to the condition of EN 388 standards.
Following table has provided the testing result of carrying out in the technique center.According to employed yarn types, it has summed up the exponential sum grade that obtains respectively aspect relevant anti-cutting and wear-resisting the requirement.
The cutting index more is subjected to special concern, and the number of times that this cutting index and blade pass is proportional, detects the blade load by certain weight that standard limited, and must carry out these and pass number of times.Therefore, the cutting index is high more in same grade, and the anti-cutting performance of product is good more.For the product for the requirement of the grade 3 that satisfies relevant anti-cutting performance, the cutting index is necessary for 5 to 10.
Therefore, four class yarns have been detected, that is:
-Nm 28/2 type yarn only comprises the HT-PA fiber;
-Nm 28/2 type yarn only comprises the HPF-PVA fiber;
-Nm 28/2 type yarn comprises that weight ratio is that 50% HT-PA fiber and weight ratio are 50% HPF-PVA fiber; With
-Nm 28/2 type yarn comprises that weight ratio is that 41% HT-PA fiber, weight ratio are that 41% HPF-PVA fiber and weight ratio are polyamide- nylon 6,6 filaments of 18%.
| Yarn types | Cutting | Wearing and tearing |
| Nm 28/2 100％HT-PA | Index 5.9 grades 3 | 500＜index＜2000 grades 3 |
| Nm 28/2 100％HPF-PVA | Index 4.6 grades 2 | 100＜index＜500 grades 3 |
| Nm 28/2 50％HT-PA 50％HPF-PVA | Index 7.5 grades 3 | 500＜index＜2000 grades 3 |
| Nm 28/2 41%HT-PA 41%HPF-PVA 18%PA6,6 filaments | Index 8.5 grades 3 | Index＞8000 class 4s |
Should be noted that, except only comprise the HPF-PVA fiber, all yarn types all satisfy the requirement of the grade 3 of relevant cutting protection.
In addition,, can notice, mix polyamide- nylon 6,6 filaments, improve the characteristic of product, especially aspect wearing and tearing by comparing back two class yarns.
Fig. 1 shows the cutting index variation, and this cutting index is the function of the component content of yarn HT-PA and HPF-PVA.
This shows, comprises that weight ratio is that 50% HT-PA fiber and weight ratio are that the Yarn constituent content of 50% HPF-PVA fiber has obtained the highest cutting index.Be also noted that from above-mentioned table also can be clear that, only comprise that the yarn of HT-PA fiber has satisfied the requirement of grade 3.
Self-evident, the present invention not only is limited in the component content of the yarn of being described hereinbefore by way of example; On the contrary, it has contained its whole modification.Therefore, especially, this yarn can only be made by high tenacity polyamide, perhaps by the high strength polyamide in conjunction with polyamide- nylon 6,6 fibers but do not have the HPF vinal and make, they can't deviate from scope of the present invention.
Claims (13)
1, a kind of yarn that is used to constitute the fabric face of cutting-proof and attrition resistant, it is characterized in that, it obtains by the high tenacity polyamide artificial fibre is spinned, and the toughness of described fiber is greater than 4.5 lis of ox/dtexs, and the fibre length of described fiber is 40 to 170mm.
2, yarn as claimed in claim 1 is characterized in that, described fiber forms by cracking, cutting, combing or traction conversion, and has 65 to 140mm length.
3, yarn as claimed in claim 1 is characterized in that, described fiber forms by the cottonize conversion, and has 40 to 65mm length.
As each the described yarn in the claim 1 to 3, it is characterized in that 4, it comprises the vinal of HPF (high-performance fiber) type, the modulus of described fiber is greater than 10GPa.
As each the described yarn in the claim 1 to 4, it is characterized in that 5, it comprises polyamide-nylon 6,6 fibers.
As each the described yarn in the claim 1 to 5, it is characterized in that 6, the ratio of described high tenacity polyamide is 15 to 85% of whole yarn gross weights.
As each the described yarn in claim 5 and 6, it is characterized in that 7, the ratio of described polyamide is 5 to 30% of whole yarn gross weights.
As each the described yarn in the claim 1 to 7, it is characterized in that 8, the fineness of described high tenacity polyamide fiber is 0.5 to 8 dtex.
As each the described yarn in the claim 4 to 8, it is characterized in that 9, the fineness of described HPF polyamide fiber is 0.5 to 8 dtex, their toughness is greater than 4.5 lis of ox/dtexs.
As each the described yarn in the claim 1 to 9, it is characterized in that 10, described whole yarn countings arrive metric count 50 for metric count 2.5.
11, as each the described yarn in the claim 1 to 10, it is characterized in that it creates with the form of elementary yarn, the twist multiplier of described elementary yarn is 30 to 90.
12, as each the described yarn in the claim 1 to 10, it is characterized in that it creates with the form of twist yarn, the twist multiplier of described twist yarn is 25 to 85.
13, a kind of fabric face is made by each the described yarn in the claim 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101635168A CN101407957A (en) | 2007-10-12 | 2007-10-12 | Yarn for composing cutting-proof and attrition resistant fabric surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101635168A CN101407957A (en) | 2007-10-12 | 2007-10-12 | Yarn for composing cutting-proof and attrition resistant fabric surface |
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| CN101407957A true CN101407957A (en) | 2009-04-15 |
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| CNA2007101635168A Pending CN101407957A (en) | 2007-10-12 | 2007-10-12 | Yarn for composing cutting-proof and attrition resistant fabric surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104854268A (en) * | 2012-12-14 | 2015-08-19 | 纳幕尔杜邦公司 | Cut resistant articles |
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2007
- 2007-10-12 CN CNA2007101635168A patent/CN101407957A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104854268A (en) * | 2012-12-14 | 2015-08-19 | 纳幕尔杜邦公司 | Cut resistant articles |
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Open date: 20090415 |