CN104325257B - The continuous winding processing technique of bamboo coiled composite tube - Google Patents
The continuous winding processing technique of bamboo coiled composite tube Download PDFInfo
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- CN104325257B CN104325257B CN201410383421.7A CN201410383421A CN104325257B CN 104325257 B CN104325257 B CN 104325257B CN 201410383421 A CN201410383421 A CN 201410383421A CN 104325257 B CN104325257 B CN 104325257B
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 82
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 82
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 82
- 239000011425 bamboo Substances 0.000 title claims abstract description 82
- 238000004804 winding Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 240000003917 Bambusa tulda Species 0.000 title 1
- 241001330002 Bambuseae Species 0.000 claims abstract description 81
- 239000004744 fabric Substances 0.000 claims abstract description 45
- 238000009941 weaving Methods 0.000 claims abstract description 43
- 238000004080 punching Methods 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 238000007711 solidification Methods 0.000 claims abstract description 33
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims abstract description 16
- 238000005498 polishing Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 238000000227 grinding Methods 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 230000001680 brushing Effects 0.000 claims description 5
- 229920002456 HOTAIR Polymers 0.000 claims description 4
- 238000009940 knitting Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000835 fiber Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- 238000005470 impregnation Methods 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 229920000297 Rayon Polymers 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive Effects 0.000 description 3
- 229920003180 amino resin Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006011 modification reaction Methods 0.000 description 3
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- 229920001225 Polyester resin Polymers 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 244000302661 Phyllostachys pubescens Species 0.000 description 1
- 235000003570 Phyllostachys pubescens Nutrition 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002860 competitive Effects 0.000 description 1
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Abstract
nullThe present invention relates to the continuous winding processing technique of bamboo coiled composite tube，Circulation steel band it is wound around outside the punching block of hollow，Punching block rotates and drives ribbon spiral to advance，Successively carry out continuous winding in steel strip surface employing containing glue non-woven fabrics by Zhi Chen district drawing-in device and make inner liner，Advance in the drive rotation limit, inner liner limit thereon that is threadingly advanced of steel band，Inner liner after primary solidification of heating departs from punching block from the tail end of punching block，Steel band outside punching block returns to punching block head end by the cavity that punching block is axial to prepare inner liner the most continuously，Inner liner after primary solidification moves on simultaneously，Thin bamboo strips used for weaving fabric is wrapped in outside inner liner to design thickness by several winding districts drawing-in device，Along with steel band constantly circulates，The tubing completing the winding of thin bamboo strips used for weaving fabric moves on，Sequentially pass through solidification，Polishing and finishing，Then cutting section is carried out，Repaste brush external protection coating，And pipe end is processed so that being tightly connected from each other.The present invention produces efficiently, steady quality.
Description
Technical field
The present invention relates to the production technology of a kind of bamboo composite pressure pipe, the continuous winding processing technique of a kind of bamboo coiled composite tube.
Background technology
Produce bamboo composite pressure pipe at present and mainly adopt the technology that definite-length-winding process, the pipe die i.e. using caliber, length certain is back and forth walked, feeding device is fixed, and utilizes spiral winding or hoop the winding process inner liner of layer-by-layer preparation bamboo multiple tube, enhancement layer, a kind of processing method of (add sand thickening layer) external protection coating from the inside to the outside on pipe die.Patent No. 200910099279.2, the Chinese patent that patent name is " preparation method of bamboo fiber winding composite tube " discloses the preparation method of a kind of bamboo fiber winding composite tube, its preparation method comprises the following steps: the 1) preparation of inner liner: makees liner by resin and felt on straight tube mould, forms antiseepage and the inner liner of inner wall smooth；2) bamboo fibre pretreatment: Phyllostachys pubescens Mazei ex H.de Lebaie is split into long 2-6m, wide 0.5-3mm, the bamboo fibre of wide 1-25mm, then defat, then clean and be dried, last bamboo fibre uses bonding or stitching or braiding the mode of lining cloth to connect into a continuous print bamboo fibre volume, and rolled；3) preparation of enhancement layer: the bamboo fibre band of rolling is contained in debatching on wrapping machine, bamboo fibre band first passes through resin storage tank and coats resin, is then wound around on the inner liner of straight tube mould, is wound around more than two layers, cured after form enhancement layer；4) preparation of external protection coating: at the material that the outer one layer of anticorrosion of air brushing of enhancement layer is waterproof, form external protection coating.
Above-mentioned production technology characteristic is: cost of investment is low, but there is the drawbacks such as automaticity is the highest, production efficiency is the highest, quality is unstable.It is thus desirable to a kind of novel production and processing technology makes up these shortcomings, continuous winding technique develops the most under this background.
Summary of the invention
The technical problem to be solved is to overcome deficiency of the prior art to provide a kind of automaticity height, the continuous winding processing technique of production efficiency bamboo coiled composite tube high, stay-in-grade.
nullThe present invention solves above-mentioned technical problem and the technical scheme is that the continuous winding processing technique of this bamboo coiled composite tube，It is characterized in that: outside the punching block of hollow, be wound around circulation steel band，Punching block rotates and drives ribbon spiral to advance，Successively carry out continuous winding in steel strip surface employing containing glue non-woven fabrics by the Zhi Chen district drawing-in device that position is fixing and make inner liner，Advance in the drive rotation limit, inner liner limit thereon that is threadingly advanced of steel band，Inner liner after primary solidification of heating departs from punching block from the tail end of punching block，Steel band outside punching block returns to punching block head end by the cavity that punching block is axial to prepare inner liner the most continuously，Meanwhile the inner liner after primary solidification moves on，Thin bamboo strips used for weaving fabric is wrapped in outside inner liner to design thickness by the fixing winding district drawing-in device in several positions，Along with steel band constantly circulates，The tubing completing the winding of thin bamboo strips used for weaving fabric moves on，Sequentially pass through solidification，Polishing and finishing，Then cutting section is carried out，Last at tube surfaces brushing external protection coating，And pipe end is processed so that being tightly connected from each other.Continuous winding technique is to be wound on the punching block of a fixed length by circulation steel band, carry out continuous winding in steel strip surface form tubing with resin, non-woven fabrics, thin bamboo strips used for weaving, when tubing forms some strength, leaving punching block, the steel band outside punching block is returned on steel band directive wheel by punching block axle center.Tubing constantly extends, constantly carry out cutting section after solidification.Continuous winding technique has the advantages such as automaticity height, production efficiency height, steady quality, can meet different production scale and the market demand in conjunction with existing process technology.
A length of 3 ~ 8 meters of punching block of the present invention, the wide 10 ~ 30mm of spiral winding thereon, the steel band of thick 0.5 ~ 1.5mm, steel strip surface is covered with release layer.The punching block of above-mentioned size and steel band is used to be adapted to the bamboo multiple tube processing of different pressures grade, pipe thickness.Steel strip surface is dried rapidly by releasing agent to form release layer or be directly covered with thin film and forms release layer, is beneficial to steel band and departs from from inner liner, it is to avoid destroy inner liner during the demoulding.
Being wound around at least one of which non-woven fabrics in glue on release layer of the present invention, non-woven fabrics width is 20 ~ 50mm, and Gram Mass is 20 ~ 30g/, and gel content is at least 90%wt.Non-woven fabrics raw material can use bamboo viscose glue, pp, glass fibre etc. as required, non-woven fabrics with impregnation or drench gluing method run through, gel content 90%wt or more than.Above-mentioned it is wound around one layer under normal circumstances containing glue non-woven fabrics, when caliber is relatively big, requires to be wound around multilamellar when pressure rating is higher.
The present invention be wound around again outside gel content is at least the non-woven fabrics of 90%wt at least one slice width 30-100mm, 50-300g/ containing glue non-woven fabrics or the needled mat in glue, its gel content is at least 70%wt.Non-woven fabrics or needled mat raw material can use bamboo viscose glue, pp, glass fibre etc. as required, non-woven fabrics with impregnation or drench gluing method run through, gel content 70%wt or more than.Above-mentioned it is wound around one layer under normal circumstances containing glue non-woven fabrics or needled mat, when caliber is relatively big, requires to be wound around multilamellar when pressure rating is higher.The effect containing glue non-woven fabrics of above-mentioned technological parameter is to make inner liner to play the effect of anti-corrosion leak-proof leakage.
In its surface spraying bonding interface agent after the inner liner demoulding after primary solidification of the present invention.Described spray interface adhesive can be amino resin, and its effect is to make inner liner and be wound around enhancement layer bonding.
Thin bamboo strips used for weaving fabric of the present invention is bonding with lining cloth after bamboo strip knitting is made into sheet, it is divided into horizontal thin bamboo strips used for weaving fabric and perpendicular thin bamboo strips used for weaving fabric according to different cut direction, wide 50 ~ the 200mm of thin bamboo strips used for weaving fabric, thick 0.5-1.2mm, horizontal thin bamboo strips used for weaving fabric and perpendicular thin bamboo strips used for weaving fabric are alternately spirally wound on outside inner liner.Horizontal thin bamboo strips used for weaving fabric, perpendicular thin bamboo strips used for weaving fabric alternately spiral winding can meet hoop and the stress requirement radially of bamboo multiple tube.
Solidification process of the present invention uses hot air circulation solidification, curing degree more than 70% in sealing space.The present invention uses hot air circulation solidification in the space of sealing, and solidification temperature is 80 DEG C, and the benefit using hot blast solidification is that confined space hot air circulation makes full use of thermal source minimizing energy loss, makes solidification evenly.
Dressing process of the present invention forms work surface for carrying out grinding in tube surfaces, face length is 400-500mm, then carrying out cutting section in accordance with work surface centrage, after cutting section, the two ends of tubing are respectively provided with a length of 200-250mm and the equal work surface of width.The working surface grinding degree of depth according to specific circumstances depending on, the purpose of grinding work surface and benefit are convenient to make the pipe port connection for pipe.
Chamfering grinding outside pipe end of the present invention, carries out seal coating to port work surface and port.General chamfer angle is 13 ° ~ 15 °, and the purpose of above-mentioned chamfering grinding is that seal coating can use the epoxy resin of modification in order to avoid damaging rubber seal when tubing interconnects.
The present invention compared with prior art has the advantage that present invention employs continuous winding tubulation cutting section again instead of existing definite-length-winding process, automaticity is high, production efficiency is high, the good stability of product quality, improves the synthetic competitive advantages of bamboo coiled composite tube further.
Accompanying drawing explanation
Fig. 1 is that the present invention produces device structure schematic diagram.
Fig. 2 is production process schematic diagram of the present invention.
Fig. 3 is tubing port organization schematic diagram of the present invention.
Detailed description of the invention
Embodiment 1
Seeing Fig. 1 ~ 3, above technical scheme is applied to the bamboo compound pipeline complex pipeline of DN600, implements step as follows:
1) pipe external diameter be 600mm, on the punching block of long 3M-8M, on parallel continuous winding, wide 10 ~ 30mm, the steel band of thick 0.5 ~ 1.5mm, form steel strip die 1, plus release layer (releasing agent or thin film) and be dried rapidly on steel strip die 1.
2) punching block rotates and drives ribbon spiral to advance, in Zhi Chen district I, the Zhi Chen district drawing-in device fixing by position is being covered with the steel strip surface of release layer around last layer 20 ~ 50mm, 20 ~ 30g/ non-woven fabrics (non-woven fabrics can use bamboo viscose glue, pp, glass fibre etc. as required).Non-woven fabrics with impregnation or drench gluing method run through, gel content reach 90%wt or more than.
3) ribbon spiral advances, drive is wrapped in nonwoven layer thereon and advances, drawing-in device by another Zhi Chen district, further around slice width 30-100mm, the non-woven fabrics of 50-300g/ or needled mat (the same ground floor of quality) in existing layer of non-woven fabric, run through with impregnation or spray mode, gel content reach 70%wt or more than.
4) after baking zone II is heated, just solidification reaches some strength, form 1.5mm inner liner and depart from punching block from the tail end of punching block, steel band outside punching block is returned on the steel belt disk 2 of punching block head end to prepare inner liner the most continuously by the cavity that punching block is axial, meanwhile the inner liner after primary solidification moves on to enter and is wound around district III, and spray bonding interface agent thereon, interface adhesive is amino resin.
5) in being wound around district III, outside thin bamboo strips used for weaving fabric being wrapped in inner liner by several winding districts drawing-in device, described thin bamboo strips used for weaving fabric is bonding with lining cloth after bamboo strip knitting is made into sheet, forms horizontal thin bamboo strips used for weaving fabric including transverse cuts and is cut longitudinally to form perpendicular thin bamboo strips used for weaving fabric.In the present embodiment, thin bamboo strips used for weaving fabric width 4.5mm, thick 0.7mm.During winding, first use horizontal thin bamboo strips used for weaving Fabric Helical to be wound around three layers, then use perpendicular thin bamboo strips used for weaving Fabric Helical to be wound around three layers, use horizontal thin bamboo strips used for weaving Fabric Helical to be wound around three layers, to specified design thickness the most again.Being additionally provided with carrying roller 3 in being wound around district III, carrying roller 3 makes thin bamboo strips used for weaving circumvolution around more closely knit.
6) constantly circulating along with steel band, the tubing completing the winding of thin bamboo strips used for weaving fabric moves on, and enters solidification equipment IV, solidification equipment IV arranges Packed housing, uses circulating air solidification in housing, and solidification temperature is 80 DEG C, after solidification equipment, the curing degree of tubing reach 70% or more than.
7) by polishing station V, is polished in tubing A surface, then require it is carried out finishing locally according to the design length of tubing by finishing station VI, being i.e. the work surface of 400-500mm in tubing local surfaces grinding length, grinding depth has no special requirements, and connects as long as being easy to suit.
8) tubing moves on, and carries out cutting section in cutting work station VII in accordance with work surface centrage, sees Fig. 3, and after cutting section, the two ends of tubing are respectively provided with a length of 200-250mm and the equal work surface 4 of width.
9) to the tube surface brushing external protection coating of fixed length after cutting, the materials such as polyester resin, epoxy resin, paint or Colophonium can be used according to applied environment external protection coating.
10) to chamfering grinding outside two ports of pipe, chamfering 5 angle is generally 13 ° 15 °, damages rubber seal during to avoid connecting and to install, and work surface and port to two ports carry out seal coating simultaneously, and seal coating typically uses the epoxy resin of modification.
11) hunting leak tubing appearance quality, dimension control and hydraulic pressure, test pressure is 1.5 times of operating pressure.
12) identification code, warehouse-in are printed.
Embodiment 2
Seeing Fig. 1 ~ 3, upper technical scheme is applied to the bamboo compound pipeline complex pipeline of DN1000, implements step as follows:
1) pipe external diameter be 1000mm, on the punching block of long 3M-8M, on parallel continuous winding, wide 10 ~ 30mm, the steel band of thick 0.5 ~ 1.5mm, form steel strip die 1.Steel strip die 1 plus release layer (releasing agent or thin film) and is dried rapidly.
2) punching block rotates and drives ribbon spiral to advance, in Zhi Chen district I, the Zhi Chen district drawing-in device fixing by position is being covered with the steel strip surface of release layer around last layer 20 ~ 50mm, 20 ~ 30g/ non-woven fabrics (non-woven fabrics can use bamboo viscose glue, pp, glass fibre etc. as required).Non-woven fabrics with impregnation or drench gluing method run through, gel content reach 90%wt or more than.
3) ribbon spiral advances, drive is wrapped in nonwoven layer thereon and advances, drawing-in device by another Zhi Chen district, further around slice width 30-100mm, the non-woven fabrics of 50-300g/ or needled mat (the same ground floor of quality) in existing layer of non-woven fabric, run through with impregnation or spray mode, gel content reach 70%wt or more than.
4) after baking zone II is heated, just solidification reaches some strength, form 1.5mm inner liner and depart from punching block from the tail end of punching block, steel band outside punching block is returned on the steel belt disk 2 of punching block head end to prepare inner liner the most continuously by the cavity that punching block is axial, meanwhile the inner liner after primary solidification moves on to enter and is wound around district III, and spray bonding interface agent thereon, interface adhesive is amino resin.
5) the thin bamboo strips used for weaving fabric described in is bonding with lining cloth after bamboo strip knitting is made into sheet, forms horizontal thin bamboo strips used for weaving fabric including transverse cuts and is cut longitudinally to form perpendicular thin bamboo strips used for weaving fabric.In the present embodiment, thin bamboo strips used for weaving fabric width 5mm, thick 0.8mm.During winding, first use horizontal thin bamboo strips used for weaving Fabric Helical to be wound around three layers, then use perpendicular thin bamboo strips used for weaving Fabric Helical to be wound around three layers, then horizontal thin bamboo strips used for weaving Fabric Helical is used to be wound around three layers, use perpendicular thin bamboo strips used for weaving Fabric Helical to be wound around three layers again, use horizontal thin bamboo strips used for weaving Fabric Helical to be wound around three layers, to specified design thickness the most again.Being additionally provided with carrying roller 3 in being wound around district III, carrying roller 3 makes thin bamboo strips used for weaving circumvolution around more closely knit.
6) constantly circulating along with steel band, the tubing completing the winding of thin bamboo strips used for weaving fabric moves on, and enters solidification equipment IV, solidification equipment IV arranges Packed housing, uses circulating air solidification in housing, and solidification temperature is 80 DEG C, after solidification equipment, the curing degree of tubing reach 70% or more than.
7) by polishing station V, is polished in tubing A surface, then require it is carried out finishing locally according to the design length of tubing by finishing station VI, being i.e. the work surface of 400-500mm in tubing local surfaces grinding length, grinding depth has no special requirements, and connects as long as being easy to suit.
8) tubing moves on, and carries out cutting section in cutting work station VII in accordance with work surface centrage, sees Fig. 3, and after cutting section, the two ends of tubing are respectively provided with a length of 200-250mm and the equal work surface 4 of width.
9) to the tube surface brushing external protection coating of fixed length after cutting, the materials such as polyester resin, epoxy resin, paint or Colophonium can be used according to applied environment external protection coating.
10) to chamfering grinding outside two ports of pipe, chamfering 5 angle is generally 13 ° 15 °, damages rubber seal during to avoid connecting and to install, and work surface and port to two ports carry out seal coating simultaneously, and seal coating typically uses the epoxy resin of modification.
11) hunting leak tubing appearance quality, dimension control and hydraulic pressure, test pressure is 1.5 times of operating pressure.
12) identification code, warehouse-in are printed.
Although the present invention is open as above with embodiment, but it is not limited to protection scope of the present invention, any technical staff being familiar with this technology, in the change made without departing from the spirit and scope of the invention and retouching, all should belong to protection scope of the present invention.
Claims (9)
- null1. the continuous winding processing technique of a bamboo coiled composite tube，It is characterized in that: outside the punching block of hollow, be wound around circulation steel band，Punching block rotates and drives ribbon spiral to advance，Successively carry out continuous winding in steel strip surface employing containing glue non-woven fabrics by the Zhi Chen district drawing-in device that position is fixing and make inner liner，Advance in the drive rotation limit, inner liner limit thereon that is threadingly advanced of steel band，Inner liner after primary solidification of heating departs from punching block from the tail end of punching block，Steel band outside punching block returns to punching block head end by the cavity that punching block is axial to prepare inner liner the most continuously，Meanwhile the inner liner after primary solidification moves on，Thin bamboo strips used for weaving fabric is wrapped in outside inner liner to design thickness by the fixing winding district drawing-in device in several positions，Along with steel band constantly circulates，The tubing completing the winding of thin bamboo strips used for weaving fabric moves on，Sequentially pass through solidification，Polishing and finishing，Then cutting section is carried out，Last at tube surfaces brushing external protection coating，And pipe end is processed so that being tightly connected from each other.
- The continuous winding processing technique of bamboo coiled composite tube the most according to claim 1, it is characterised in that: a length of 3 ~ 8 meters of described punching block, the wide 10 ~ 30mm of spiral winding thereon, the steel band of thick 0.5 ~ 1.5mm, steel strip surface is covered with release layer.
- The continuous winding processing technique of bamboo coiled composite tube the most according to claim 2, it is characterised in that: being wound around at least one of which non-woven fabrics in glue on described release layer, non-woven fabrics width is 20 ~ 50mm, and Gram Mass is 20 ~ 30g/, and gel content is at least 90%wt.
- The continuous winding processing technique of bamboo coiled composite tube the most according to claim 3, it is characterized in that: be wound around again outside gel content is at least the non-woven fabrics of 90%wt at least one slice width 30-100mm, 50-300g/ containing glue non-woven fabrics or the needled mat in glue, its gel content is at least 70%wt.
- The continuous winding processing technique of bamboo coiled composite tube the most according to claim 1, it is characterised in that: in its surface spraying bonding interface agent after the inner liner demoulding after described primary solidification.
- The continuous winding processing technique of bamboo coiled composite tube the most according to claim 1, it is characterized in that: described thin bamboo strips used for weaving fabric is bonding with lining cloth after bamboo strip knitting is made into sheet, it is divided into horizontal thin bamboo strips used for weaving fabric and perpendicular thin bamboo strips used for weaving fabric according to different cut direction, wide 50 ~ the 200mm of thin bamboo strips used for weaving fabric, thick 0.5-1.2mm, horizontal thin bamboo strips used for weaving fabric and perpendicular thin bamboo strips used for weaving fabric are alternately spirally wound on outside inner liner.
- The continuous winding processing technique of bamboo coiled composite tube the most according to claim 1, it is characterised in that the tubing completing the winding of thin bamboo strips used for weaving fabric described in: moves on and uses hot air circulation solidification, curing degree more than 70% in sealing space.
- The continuous winding processing technique of bamboo coiled composite tube the most according to claim 1, it is characterized in that: described dressing process forms work surface for carrying out grinding in tube surfaces, face length is 400-500mm, then carrying out cutting section in accordance with work surface centrage, after cutting section, the two ends of tubing are respectively provided with a length of 200-250mm and the equal work surface of width.
- The continuous winding processing technique of bamboo coiled composite tube the most according to claim 1, it is characterised in that: chamfering grinding outside described pipe end, port work surface and port are carried out seal coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410383421.7A CN104325257B (en) | 2014-08-06 | The continuous winding processing technique of bamboo coiled composite tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410383421.7A CN104325257B (en) | 2014-08-06 | The continuous winding processing technique of bamboo coiled composite tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104325257A CN104325257A (en) | 2015-02-04 |
| CN104325257B true CN104325257B (en) | 2017-01-04 |
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| PB01 | Publication | ||
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Effective date of registration: 20150923 Address after: Hangzhou City, Zhejiang province 311115 Fengdu village Pingyao Town, Yuhang District Road Show Applicant after: Zhejiang Xinzhou Bamboo Base Composite Materials Technology Co., Ltd. Applicant after: Ye Ling Address before: Hangzhou City, Zhejiang province 311115 Fengdu village Pingyao Town, Yuhang District Road Show Applicant before: Zhejiang Xinzhou Bamboo Base Composite Materials Technology Co., Ltd. |
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