CN1709936B - Polyoxymethylene resin carrying transferring belt - Google Patents
Polyoxymethylene resin carrying transferring belt Download PDFInfo
- Publication number
- CN1709936B CN1709936B CN2005100785648A CN200510078564A CN1709936B CN 1709936 B CN1709936 B CN 1709936B CN 2005100785648 A CN2005100785648 A CN 2005100785648A CN 200510078564 A CN200510078564 A CN 200510078564A CN 1709936 B CN1709936 B CN 1709936B
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- CN
- China
- Prior art keywords
- transferring belt
- polyoxymethylene resin
- carrying transferring
- resin carrying
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/04—Driving-belts made of fibrous material, e.g. textiles, whether rubber-covered or not
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Nonwoven Fabrics (AREA)
- Woven Fabrics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a conveyor belt made of polyoxymethylene resin having high crystalinity and excellent abrasion resistance, bending fatigue resistance, rigidity, alkali resistance and alcohol resistance. The conveyor belt is formed of an assembly of fiber formed of polyoxymethylene copolymer, which includes 1.5-7 mol of specified oxyalkylene unit per 100 mol of oxymethylene as a unit in polymer chain composed chiefly of repetition of oxymethylene unit and which has 1.0-50 g/10 min, of melt index (190 deg C, load at 2160 g).
Description
Technical field
The present invention relates to contain the fiber assembly (Xian Victoria aggregate of specific polyacetal copolymer) carrying transferring belt that forms.
Background technology
Plastic carrying transferring belt is applied in all trades and professions.
In the past, above-mentioned synthetic resins system carrying transferring belt generally was to be made of the multiple textile structure of the monofilament of polyester or polymeric amide.But, the resistant polyester alkali hydrolysis property, wearing no resistance, polymeric amide is owing to dimensional change or the rerum natura that suction causes changes greatly, so the carrying transferring belt that is made of this resin can be restricted aspect article or the working conditions carrying.
On the contrary, polyformaldehyde resin degree of crystallinity height, high abrasion resistance, flex fatig resistance, rigidity, alkali resistance, alcohol resistance are contour, therefore give very big expectation with the material of travelling belt as above-mentioned carrying.
But, existing commercially available polyformaldehyde resin is because of its crystallization property, restricted its application in the forming process except that injection molding greatly, it is very difficult to make the fiber that is made of this resin, with the carrying transferring belt not practical application as yet of this fiber assembly formation.Also have following problem in addition: because this crystallinity of polymer height, during as travelling belt since with the wearing and tearing of conveyance article, cause fibrillation easily, can not get enough practical weather resistance.
That is, polyformaldehyde resin is the resin with good various characteristics, but because its degree of crystallinity height, crystallization velocity are fast etc., is considered to be difficult to be applicable to industrial long filament manufacturing.Therefore, except academic research, almost not as research object.As minority known technology, has only unique twist yarn (reference example such as JP-A61-146832) about having 1000 DENIER or above fiber number about this polyoxymethylene filament processome twist yarn.
Summary of the invention
The objective of the invention is to solve above-mentioned problem, the degree of crystallinity height is provided, good polyoxymethylene resin carrying transferring belts such as wear resistance, flex fatig resistance, rigidity, alkali resistance, alcohol resistance.
The inventor to achieve these goals, through found that of lucubrate, the polyacetal copolymer of the specific composition by using crystallization control characteristic, flowability etc., solved above-mentioned problem, can obtain good carrying transferring belts such as wear resistance hydrolytic resistance weather resistance state stability, thereby finish the present invention.
Be that the present invention forms polyoxymethylene resin carrying transferring belt with the fiber assembly that comprises following polyacetal copolymer, described polyacetal copolymer is in the polymer chain that mainly is made of the formaldehyde repeating unit, every 100mol formaldehyde unit contains the oxyalkylene units of the following general formula of 1.5～7mol (1) expression, and melt index (190 ℃, load 2160g) is 1.0～50g/10 minute.
(in the formula, R
1, R
2Being selected from hydrogen, carbonatoms and being 1～8 alkyl, having carbonatoms is organic group, the phenyl of 1～8 alkyl and the organic group with phenyl, R
1, R
2Can be the same or different, m represents 2～6 integer).
In addition, the present invention also provides the application of the carrying transferring belt of above-mentioned polyacetal copolymer fiber assembly.
The carrying transferring belt wear resistance hydrolytic resistance weather resistance morphological stabilities that obtained by the present invention etc. are good, the widespread use of expectation industrial field in many.
Description of drawings
Fig. 1 is the diagram that the Test condition of the durable evaluation of carrying out in an embodiment of wear resistance is described.
Embodiment
Below, describe the present invention in detail.As mentioned above, polyoxymethylene resin carrying transferring belt of the present invention is characterised in that: formed by the fiber assembly that comprises following polyacetal copolymer, described polyacetal copolymer is in the polymer chain that mainly is made of the formaldehyde repeating unit, every 100mol formaldehyde unit contains the oxyalkylene units of the above-mentioned general formula of 1.5～7mol (1) expression, and melt index (190 ℃, load 2160g) is 1.0-50g/10 minute.
In the polyacetal copolymer that the present invention uses, the ratio of the oxyalkylene units of general formula (1) expression is that every 100mol formaldehyde unit contains 1.5-7mol, preferred every 100mol formaldehyde unit contains 1.7～6mol, and preferred especially every 100mol formaldehyde unit contains 1.8～5mol.The ratio of the oxyalkylene units of general formula (1) expression after a little while, the crystallization velocity of polyacetal copolymer accelerates, when the fiber of making the formation carrying transferring belt is the spinning of purpose, fracture of wire not only takes place easily, because the degree of crystallinity height after the spinning, stretchiness also reduces, and the manufacturing that is suitable for the various long filaments of carrying transferring belt becomes difficult.In addition, when the fiber that obtains uses as carrying transferring belt, follow fibrillation easily to produce breakage, become the travelling belt that lacks weather resistance.
On the contrary, when the ratio of the oxyalkylene units of general formula (1) expression was too many, the mechanical characteristics of polyacetal copolymer reduced, as the practical characteristic deficiency of carrying transferring belt.
In addition, the polyacetal copolymer that uses among the present invention, according to ASTM D-1238, at 190 ℃, the melt index (MI) that load 2160g measures down is 1-50g/10 minute, preferred 1.2～30g/10 minute, preferred especially 1.5～20g/10 minute.In addition,, in the scope of this melt index, there is the OK range of the melt index that is more preferably, states as follows about this aspect because of making the method difference of the long filament that constitutes carrying transferring belt.
Industrially be difficult to stably make the excessive polyacetal copolymer of melt index (MI), in addition, make melt viscosity become low because molecular weight is low, in the manufacturing of polyacetal copolymer, decompose and remove unstable terminal processing or cooperate stablizer with the remarkable variation of melt processable in the stabilization treatment of forcing machine melt kneading etc. by carrying out melt kneading as ordinary method.And then, because molecular weight is low, thermostability and mechanical characteristics variation, easy fracture of wire when fiber sprinning that constitutes carrying transferring belt and stretching, the manufacturing instability of long filament.On the contrary, the too small polyacetal copolymer of melt index (MI), because melt viscosity becomes too high, the load during spinning increases, and extrudes the difficulty that becomes.
The manufacture method of the above-mentioned polyacetal copolymer that the present invention is used is not particularly limited, and can obtain by the following method usually: mainly use cationic polymerisation catalyst to carry out mass polymerization Jiang trioxane with as the cyclic ether compounds or the cyclic acetal compound of comonomer.Can use any well known devices such as intermittent type, continous way as poly-unit.Wherein, the importing ratio of the oxyalkylene units of above-mentioned general formula (1) expression can be by the amount of comonomers adjustment of copolymerization, or the chain-transfer agent that uses can be by polymerization time of melt index (MI), for example the addition adjustment of methylal etc.
Cyclic ether compounds or cyclic acetal compound as comonomer, can enumerate oxyethane, propylene oxide, butylene oxide ring, epoxy chloropropane, epoxy bromopropane, Styrene oxide 98min., trimethylene oxide, 3, two (chloromethyl) trimethylene oxide of 3-, tetrahydrofuran (THF), ト リ オ キ セ バ Application, 1, the 3-dioxolane, the propylene glycol formal, the glycol ether formal, the triglycol formal, 1,4-butyleneglycol formal, 1,5-pentanediol formal, 1,6-hexylene glycol formal etc., optimization ethylene oxide wherein, 1, the 3-dioxolane, the glycol ether formal, 1,4-butyleneglycol formal.In addition, the polyacetal copolymer that uses among the present invention can have branching or crosslinking structure.
In the present invention in the polyacetal copolymer of Shi Yonging, the oxyalkylene units of above-mentioned general formula (1) expression that is formed by this comonomer is homodisperse as far as possible in the polyacetal copolymer molecular chain preferably, and the ratio of the oxyalkylene units chaining of above-mentioned general formula (1) expression more than 2 or 2 is preferably 5 moles of whole % or following of oxyalkylene units.
The polyacetal copolymer that obtains by polymerization by following processing for practicality: the inactivation that carries out catalyzer is handled, after the stabilization treatment of the washing of the removing of unreacted monomer, polymkeric substance, drying, unstable terminal portions etc., cooperate the stabilization treatment of various stablizers etc. again.Representational stablizer can be enumerated oxyhydroxide, inorganic salt, carboxylate salt of hindered phenol based compound, nitrogenous compound, basic metal or alkaline-earth metal etc.
In addition, in the scope that does not hinder the object of the invention, in the polyacetal copolymer that the present invention uses, can add typical additives as required for thermoplastic resin, for example a kind in tinting material such as dyestuff, pigment, lubricant, nucleator, remover, antistatic agent, tensio-active agent or organic polymer material, inorganic or organic filament shape, tabular, the powder shape weighting agent etc. or 2 kinds or more than.
The manufacture method of the fiber that constitutes polyoxymethylene resin carrying transferring belt of the present invention then, is described.
Fiber as constituting carrying transferring belt can use monofilament or multifilament, is not particularly limited for manufacture method, can use common melt-spinning and stretching manufacture method.Wherein, when using monofilament, in above-mentioned melt index (MI) scope, preferably using melt index is 1～30g/10 minute, more preferably 1.5～15g/10 minute.When using multifilament, preferably using melt index is 1～30g/10 minute, more preferably 3～20g/10 minute.
As an example of long filament manufacture method, can enumerate device for spinning ejection molten polymer by constituting by melt kneading device, toothed gear pump, nozzle etc., this molten polymer is batched the method for carrying out spinning by roller.The long filament that obtains at spinning process can be continuously by stretching process or discontinuous the stretching.
Stretch ratio can be regulated by the suitable speed of leading out roller and winding roller of setting, and obtains the long filament of the stretching ratio that requires.The heating means of this moment can be used methods such as heated air, heating liquid, hot plate contact, FAR INFRARED HEATING, LASER HEATING, electromagnetic induction heating, are not particularly limited.
In the present invention, as this stretching condition, preferably, stretch 2～40 times in the glass transition point of polyacetal copolymer temperature to fusing point.Temperature when stretching is preferably about from (fusing point-50 ℃) to (fusing point-20 ℃).Under underheated state, it is big that tensile stress becomes, and productivity is reduced, and fracture of wire also takes place easily.Under superheat state, polymkeric substance becomes molten state and fracture of wire, so not preferred.
In addition, stretching ratio is preferably in the above-mentioned scope and suitably sets according to purposes.When setting stretching ratio, follow the rising of stretching ratio, the intensity of the extrusion that obtains improves, on the contrary, consider that elongation reduce to show the behavior of easy fibrillation that becomes of the reduction of practical characteristics such as toughness and knot tenacity or fiber self, and when considering common rerum natura balance, preference is as about 5 times to 10 times stretching ratio, when the warp thread that is used for fabric etc. requires high-intensity situation, preferably stretch with about 8 times to 20 times high stretching ratio.
The long filament that stretched processing obtains in the stretching process preferably makes molecularity fixed heat setting handle under heated condition, and the dimensional change of extrusion is reduced.As an example of heat setting condition, can enumerate under (fusing point-30 ℃) or following temperature and carry out heat setting.
The fiber assembly of formation travelling belt also can use the staple fibre outside the above-mentioned long filament (macrofiber).The following staple fibre that obtains: as required, 20 DENIER or following elongate filaments are implemented the processing of curling, be cut to 10mm and obtain to 100mm left and right sides length.
Polyoxymethylene resin carrying transferring belt of the present invention, by being weaved by loom, above-mentioned monofilament or multifilament engage between the two ends of the fabric that obtains, or obtain the fabric of tubular by seamless weaving, is purpose rotating operation continuously or intermittently with it with the carrying by common drive unit, embodies the function as carrying transferring belt thus.For the weaving structure of fabric can be that plain weave, twill, plain weave fine groove are (flat
Fine), the twill weave fine groove (
Fine), multiple fabric, other are not particularly limited.Also can use the long filament cloth as carrying transferring belt in addition.
Except as above the weaving textile thing being used as the carrying transferring belt, with the weaving textile thing that contains monofilament or multifilament etc. as body material, to lack macrofiber carries out knitting etc., the long filament of making by compound fabric tissue and nonwoven fabric texture and the complex tissue sheet material of staple fibre also can be used as carrying transferring belt.
In addition, when constituting fabric, other raw material long filaments might be used for part or all of warp thread, weft yarn according to various purposes.As other raw material long filaments can independent assortment polyester system, existing long filament such as polypropylene, polymeric amide, polyphenylene sulfide, fluorine system.
In addition, according to the purpose that is processed into when using behind long filament state or the travelling belt state, can implement various coatings such as tensio-active agent, dissimilar polymer.
Good as above-mentioned carrying transferring belt wear resistance of the present invention, hydrolytic resistance, the weather resistance that obtains, be the travelling belt of industrial applied range.
Embodiment
Below, be described more specifically the present invention by embodiment, but the present invention is not limited in this.
Embodiment 1-7
Use by be provided with in the outside by heat (cold) solvent outer bright, section is the cylinder with 2 overlapping shapes of circular portion, continous way hybrid reaction machine with blade-carrying rotating shaft formation, blade-carrying 2 rotating shafts are rotated with 150rpm respectively, add aqueous De trioxane simultaneously, cyclic ethers or cyclic acetal (1 as comonomer, the 3-dioxolane, 1,4-butyleneglycol formal, the glycol ether formal), and as the methylal of molecular weight regulator, in the polymerization machine, add catalyzer boron trifluoride 50ppm (for whole monomers) simultaneously continuously and carry out mass polymerization, the polymkeric substance of the amount of comonomers shown in the preparation table 1.To pass through pulverizer fast from the resultant of reaction that the polymerization machine is discharged, the aqueous solution that contains triethylamine 0.05 weight % that adds 60 ℃ simultaneously makes catalyst deactivation.Separate then, washing, drying, obtain thick polyacetal copolymer.
Then, with respect to this thick polyacetal copolymer of 100 weight parts, add the triethylamine 5 weight % aqueous solution of 4 weight parts, the tetramethylolmethane-four of 0.3 weight part [3-(3,5-di-t-butyl-4-hydroxyphenyl) propionic ester], use the biaxial extruder melt kneading down at 210 ℃, remove l fraction.
[3-(3 for the tetramethylolmethane-four of interpolation 0.03 weight part in the polyformaldehyde resin that 100 weight parts are obtained by aforesaid method, 5-di-t-butyl-4-hydroxyphenyl) propionic ester] and 0.15 weight part melamine as stablizer, use the biaxial extruder melt kneading down at 210 ℃, obtain granular polyformaldehyde resin.
The polymkeric substance that use obtains, extrusion shaping machine with 200 ℃ of barrel design temperatures carries out plasticising-fusion, the die head of 'go'gage 1mm Φ, 6 holes, circular port, extrude continuously with resin extruded amount 20cc/ branch, with its operation through drawing with pulling speed 6m/ branch, make it pass through the room temperature tank and cooling curing, obtain the bar-shaped formed body of circular cross section, and it is stretched at length direction.Be stretching in the following 150 ℃ hot blast High Temperature Furnaces Heating Apparatus of normal pressure, undertaken by the coiling speed ratio of adjusting roller, leading out roller speed by control particularly is the 6m/ branch, and winding roller speed is that the 42m/ branch carries out 7 times of stretchings.To obtain long filament and be woven to plain weave, carry out the wear-resisting durability evaluation of carrying transferring belt.
Comparative example 1～6
Use the present invention's polyacetal copolymer in addition, under the condition identical, prepare not extrusion, and then the preparation monofilament carries out same evaluation as plain goods and embodiment with embodiment.
The result is as shown in table 1.
In addition, the assessment item of embodiment comparative example, its measuring method-judgement criteria is as follows.
[measuring melt index (MI)]
According to ASTM D-1238, under 190 ℃, the load of 2160g, measure.
[polymkeric substance compositional analysis]
The polymer dissolution used in the evaluation of physical property in hexafluoroisopropanol d2, is carried out 1H-NMR and measured.Peak area by each unit correspondence carries out quantitatively.
[the durable evaluation of wear resistance]
As shown in Figure 1, the fixing 200g weight in the tabby front portion of the wide about 10cm of end face fixed, the electric motor that can regulate by speed with 60rpm, made the surface attach the SUS S55C diameter 20mm rod rotation of sand paper #2000, visual observations surface afterwards in 10 minutes.
The criterion of ※ observations
Judge that 5... confirms that filament surface does not have obvious damage.
Also some breaks to judge 3... affirmation filament surface fibrillation.
Judge that 1... confirms that filament surface obviously damages.
Table 1
DO; 1, the 3-dioxolane
BDF; 1,4-butyleneglycol formal
EGF; The glycol ether formal.
Claims (16)
1. polyoxymethylene resin carrying transferring belt, it is formed by the fiber assembly that comprises following polyacetal copolymer, this polyacetal copolymer is in the polymer chain that mainly is made of the formaldehyde repeating unit, every 100mol formaldehyde unit contains the oxyalkylene units of the following general formula of 1.5～7mol (1) expression, and the melt index under 190 ℃, load 2160g is 1.0～50g/10 minute:
In the formula, R
1, R
2Be selected from hydrogen, carbonatoms and be 1～8 alkyl, R
1, R
2Can be the same or different, m represents 2～6 integer.
2. polyoxymethylene resin carrying transferring belt as claimed in claim 1, every 100mol formaldehyde unit contains the above-mentioned oxyalkylene units of 1.7～6mol in this polyacetal copolymer.
3. polyoxymethylene resin carrying transferring belt as claimed in claim 1, every 100mol formaldehyde unit contains the above-mentioned oxyalkylene units of 1.8～5mol in this polyacetal copolymer.
4. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, oxyalkylene units be selected from oxygen ethylene unit and the oxidation tetramethylene unit more than a kind or a kind.
5. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, this polyacetal copolymer has 1.2～30g/10 minute melt index.
6. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, this polyacetal copolymer has 1.5～20g/10 minute melt index.
7. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, this polyacetal copolymer has branching or crosslinking structure.
8. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, wherein the aggregate of fiber is a supatex fabric.
9. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, wherein the aggregate of fiber is by meristogenetic fabric.
10. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, wherein the aggregate of fiber is the fabric that is formed by multifilament.
11. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, wherein the aggregate of fiber is that monofilament and supatex fabric are composited.
12. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, wherein the aggregate of fiber is that multifilament and supatex fabric are composited.
13. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, wherein the aggregate of fiber is to be the needled fabric of body material with the monofilament reticulation.
14. polyoxymethylene resin carrying transferring belt as claimed in claim 1 or 2, wherein the aggregate of fiber is the cloth of monofilament or multifilament.
15. a carrying transferring belt, it is made of with other raw fibres claim 1 or 2 described polyacetal copolymer system fiber assemblies.
16. claim 1 or 2 described polyacetal copolymer system fiber assemblies are used for the carrying transferring belt purposes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004179206A JP4271622B2 (en) | 2004-06-17 | 2004-06-17 | Conveyor belt made of polyoxymethylene resin |
| JP179206/04 | 2004-06-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1709936A CN1709936A (en) | 2005-12-21 |
| CN1709936B true CN1709936B (en) | 2010-05-26 |
Family
ID=35706230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100785648A Expired - Fee Related CN1709936B (en) | 2004-06-17 | 2005-06-17 | Polyoxymethylene resin carrying transferring belt |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4271622B2 (en) |
| KR (1) | KR20060049236A (en) |
| CN (1) | CN1709936B (en) |
| TW (1) | TWI403527B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006049260A1 (en) | 2004-11-08 | 2006-05-11 | Nec Corporation | Signal processing method, signal processing device, and signal processing program |
| JP5116984B2 (en) * | 2006-04-06 | 2013-01-09 | ポリプラスチックス株式会社 | Nonwoven fabric and method for producing the same |
| USD589322S1 (en) | 2006-10-05 | 2009-03-31 | Lowe's Companies, Inc. | Tool handle |
| KR101605018B1 (en) | 2009-08-11 | 2016-04-04 | 삼성디스플레이 주식회사 | Touch screen display apparatus |
| WO2023243388A1 (en) | 2022-06-17 | 2023-12-21 | グローバルポリアセタール株式会社 | Sliding member for conveyance devices and resin composition |
| CN115262024A (en) * | 2022-08-11 | 2022-11-01 | 山东鲁化森萱新材料有限公司 | Intrinsic high-thermal-conductivity polyformaldehyde fiber and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209441A (en) * | 1997-08-22 | 1999-03-03 | 泛塑料株式会社 | Process for continuous production of polyacetal resin |
| CN1424444A (en) * | 2001-12-14 | 2003-06-18 | 宝理塑料株式会社 | Acetal (dehyde) resin flat yarn, manufacture and use thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61146832A (en) * | 1984-12-19 | 1986-07-04 | 旭化成株式会社 | Polyoxymethylene twisted yarn |
| US4873282A (en) * | 1987-05-15 | 1989-10-10 | Mitsubishi Petrochemical Co., Ltd. | Polyacetal resin composition |
| JP3059742B2 (en) * | 1989-06-08 | 2000-07-04 | 旭化成工業株式会社 | Polyacetal copolymer and composition thereof |
| DE69726299T2 (en) * | 1996-09-18 | 2004-09-09 | E.I. Du Pont De Nemours And Co., Wilmington | ANTISTATIC COMPOSITION |
| US6235133B1 (en) * | 1996-09-30 | 2001-05-22 | Bridgestone Corp. | Conveyor belt and method of making the same |
| JP2000003100A (en) * | 1998-06-12 | 2000-01-07 | Fuji Xerox Co Ltd | Belt for image forming device, and intermediate transfer belt, transfer material carrying belt, transfer belt and image forming device using the same |
| JP4087002B2 (en) * | 1999-03-16 | 2008-05-14 | ポリプラスチックス株式会社 | Polyacetal resin composition and metal insert molded product |
| JP2003268627A (en) * | 2002-03-07 | 2003-09-25 | Toray Ind Inc | Polyacetal fiber |
| JP2005053663A (en) * | 2003-08-06 | 2005-03-03 | Ricoh Co Ltd | Image forming device, recording liquid, conveying belt and recording liquid cartridge |
-
2004
- 2004-06-17 JP JP2004179206A patent/JP4271622B2/en not_active Expired - Fee Related
-
2005
- 2005-05-26 TW TW094117204A patent/TWI403527B/en not_active IP Right Cessation
- 2005-06-16 KR KR1020050051936A patent/KR20060049236A/en not_active Application Discontinuation
- 2005-06-17 CN CN2005100785648A patent/CN1709936B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209441A (en) * | 1997-08-22 | 1999-03-03 | 泛塑料株式会社 | Process for continuous production of polyacetal resin |
| CN1424444A (en) * | 2001-12-14 | 2003-06-18 | 宝理塑料株式会社 | Acetal (dehyde) resin flat yarn, manufacture and use thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1709936A (en) | 2005-12-21 |
| JP2006001693A (en) | 2006-01-05 |
| TW200617051A (en) | 2006-06-01 |
| JP4271622B2 (en) | 2009-06-03 |
| TWI403527B (en) | 2013-08-01 |
| KR20060049236A (en) | 2006-05-18 |
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