CN110592770B - Thermal shrinkage protective sleeve - Google Patents
Thermal shrinkage protective sleeve Download PDFInfo
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- CN110592770B CN110592770B CN201910736587.5A CN201910736587A CN110592770B CN 110592770 B CN110592770 B CN 110592770B CN 201910736587 A CN201910736587 A CN 201910736587A CN 110592770 B CN110592770 B CN 110592770B
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- outer layer
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D11/00—Double or multi-ply fabrics not otherwise provided for
- D03D11/02—Fabrics formed with pockets, tubes, loops, folds, tucks or flaps
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Woven Fabrics (AREA)
Abstract
The embodiment of the invention discloses a thermal shrinkage protective sleeve. Wherein, the pyrocondensation protective sleeve includes: the sleeve comprises a sleeve inner layer and a sleeve outer layer; the inner layer and the outer layer of the sleeve are connected double-layer structures which are woven in a preset chain arrangement and drafting mode; the inner layer and the outer layer of the sleeve are made of different yarn materials. By connecting the double-layer structure, the problems of port scattering and the like can be effectively solved. Moreover, the combination of multiple different materials is allowed to be used during weaving, so that the used materials can be adjusted according to the actual use requirement, and the effects of high wear resistance, impact resistance, good heat preservation and the like are achieved.
Description
Technical Field
The invention relates to the technical field of wire harness sleeves, in particular to a thermal shrinkage protective sleeve.
Background
At present, in the new energy automobile industry, heat-shrinkable cloth or protective sleeves and the like are required to be used, and the functions of wear resistance protection and the like are achieved.
However, since the new energy automobile uses electric energy as power, the layout of parts inside the automobile body is more compact, and once the electric wires are worn and short-circuited, serious safety accidents such as spontaneous combustion can be caused. Therefore, the requirements for wear resistance are higher. Moreover, once the automobile is impacted, part of the automobile needs to be protected against impact, otherwise, the wire harness is cut off to cause short circuit, which can cause serious accidents such as spontaneous combustion.
In addition, the new energy automobile is driven by a motor, the heat generation quantity is far lower than that of a fuel oil automobile, and if no heat preservation measures are adopted in partial pipelines, the temperature of an automobile battery cannot reach the optimal operation temperature, so that the endurance mileage is reduced.
How to provide a wire harness protection product which can meet the wear resistance, impact resistance and heat preservation performance required by use is a problem which needs to be solved urgently.
In the process of implementing the invention, the inventor finds that the following problems exist in the related art: in order to promote the service performance of the protection product, the heat-shrinkable protective sleeve with a double-layer structure is available. However, these products have problems of misalignment, surface wrinkles, and the like, and the electric wire or the rubber tube may be aged or the like due to a long retention time at such a high temperature, and may have problems of end burrs, easy fraying, and the like during cutting.
Disclosure of Invention
Aiming at the technical problems, the embodiment of the invention provides a heat-shrinkable protective sleeve to solve the problem that the existing wire harness protective product is difficult to meet the use requirement.
A first aspect of embodiments of the present invention provides a heat shrinkable protective sleeve. The pyrocondensation protective sleeve includes: the sleeve comprises a sleeve inner layer and a sleeve outer layer;
the inner layer and the outer layer of the sleeve are connected double-layer structures which are woven in a preset chain arrangement and drafting mode; the inner layer and the outer layer of the sleeve are made of different yarn materials.
Optionally, the predetermined flower chain arrangement for braiding the outer layer of the sleeve is:
1: high-low-high-low
2: high-low-high-low
3: high-low-high
4: high-low-high-low
5: high-low-high-low
6: high-low
7: high-low-high-low
8: low-high-low
Where 1-8 are the numbering of the repeating units of the flower chain, "high" indicates that the warp is above the weft and "low" indicates that the warp is below the weft.
Optionally, the predetermined flower chain arrangement for braiding the inner layer of the sleeve is:
1: high-high
2: high-low
3: high-low
4: low-low
5: high-high
6: low-high-low
7: high-low-high
8: low-low
Wherein, the flower chain for weaving the outer layer of the sleeve comprises flower chains 1 to 6, and the flower chain for weaving the inner layer of the sleeve comprises flower chains 7 to 10.
Optionally, the heat-shrinkable protective sleeve comprises a lock side, a selvedge side and a middle repeat section between the lock side and the selvedge side: the outer layer of the sleeve comprises an upper outer layer and an upper inner layer, and the outer layer of the sleeve comprises a lower inner layer and a lower outer layer.
Optionally, the threading manner specifically includes:
the lock side adopts the following yarn arrangement mode:
3 (upper outer layer) -2 (lower outer layer) -1 (upper outer layer) -6 (lower outer layer) -3 (upper outer layer) -2 (lower outer layer) -5 (upper outer layer) -4 (upper outer layer) -1 (upper outer layer) -2 (lower outer layer) -3 (upper outer layer) -4 (lower outer layer) -5 (upper outer layer) -6 (lower outer layer) -1 (upper outer layer) -2 (lower outer layer) -3 (upper outer layer) -9 (upper inner layer) -7 (upper inner layer) -4 (lower outer layer) -8 (upper inner layer) -10 (lower inner layer) -8 (upper inner layer) -1 (upper outer layer) -7 (lower inner layer) -2 (lower outer layer) -8 (lower inner layer) -3 (lower outer layer) -7 (lower inner layer) -4 (lower outer layer) -8 (lower inner layer) -5 (upper outer layer) -7 (lower inner layer) -6 (lower outer layer) -8 (lower inner layer);
the middle repeated arrangement part adopts the following yarn arrangement mode:
1 (upper outer layer) -7 (upper inner layer) -2 (upper outer layer) -8 (upper inner layer) -3 (upper outer layer) -7 (upper inner layer) -4 (lower outer layer) -8 (upper inner layer) -5 (upper outer layer) -7 (upper inner layer) -6 (lower outer layer) -8 (lower outer layer);
the cloth side adopts the following yarn arrangement mode:
8 (lower inner layer) -10 (upper inner layer) -8 (lower inner layer) -4 (lower outer layer) -7 (lower inner layer) -9 (lower inner layer) -3 (upper outer layer) -2 (lower outer layer) -1 (upper outer layer) -6 (lower outer layer) -3 (upper outer layer) -5 (lower outer layer) -4 (lower outer layer) -1 (upper outer layer) -2 (lower outer layer) -6 (lower outer layer) -5 (upper outer layer) -4 (lower outer layer) -3 (upper outer layer) -2 (lower outer layer) -1 (upper outer layer) -6 (lower outer layer) -5 (upper outer layer) -3 (lower outer layer) -4 (upper outer layer) -2 (lower outer layer) -1 (upper outer layer);
wherein the numbers 1 to 10 are the heald frame numbers of the yarns.
Optionally, on the heddle pieces of the heald frames numbered 1-6, each piece passes through two 900D yarns; on the heddle pieces of the heald frames numbered 7-10, each piece passes through one 900D yarn.
Optionally, two different coils are used in the manufacture of the heat-shrinkable protective sleeve such that the inner sleeve layer and the outer sleeve layer are braided from different yarn materials.
Optionally, the thickness of the heat-shrinkable protective sleeve connecting the two-layer structure is greater than or equal to 1.6 mm.
Optionally, the yarn material is 900D polyester yarn.
Optionally, the heat-shrinkable protective sleeve further comprises a uniform adhesive film formed on the outer surface of the outer layer of the sleeve based on vinyl acetate emulsion.
In the technical scheme provided by the embodiment of the invention, the problems of port scattering and the like can be effectively solved by connecting the double-layer structure. Moreover, the combination of multiple different materials is allowed to be used during weaving, so that the used materials can be adjusted according to the actual use requirement, and the effects of high wear resistance, impact resistance, good heat preservation and the like are achieved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a flower chain arrangement according to an embodiment of the present invention;
FIG. 2 is a schematic view of one embodiment of a threading manner according to an embodiment of the invention;
fig. 3 is a schematic view of one embodiment of a heat-shrinkable protective sleeve according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "vertical," "horizontal," "left," "right," "up," "down," "inner," "outer," "bottom," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 3 is a heat-shrinkable protective sleeve according to an embodiment of the present invention. As shown in fig. 3, the heat shrinkable protective sleeve has a double-layer structure including an inner sleeve layer 200 and an outer sleeve layer 100.
The inner layer and the outer layer of the sleeve are connected double-layer structures woven in a preset chain arrangement and drafting mode. According to the requirement of actual conditions, the sleeve can be obtained by knitting different yarn materials on the inner layer and the outer layer of the sleeve.
It should be noted that although the specification discloses only a two-layer construction of the heat shrinkable protective sleeve. However, based on the inventive idea disclosed in the embodiments of the present invention, the skilled person can also adjust the flower chain arrangement to weave a heat-shrinkable protective sleeve with more layers.
In some embodiments, the thickness of the heat-shrinkable protective sleeve connected with the double-layer structure can be controlled to be greater than or equal to 1.6 mm. Preferably, the thickness of the thermal shrinkage protective sleeve can be controlled to be 2.5mm, so that the thickness of a product is increased, and the impact resistance of the product is improved.
In other embodiments, the proper yarn can be further selected to meet the performance requirements of actual use. Wherein the yarn material is 900D polyester yarn.
By using a thicker 900D interlaced yarn, the inner layer thickness and softness can be increased to improve impact resistance.
It should be noted that when further improvement of the impact resistance is desired, this can also be achieved by further increasing the thickness and using a higher strength yarn material.
Preferably, in order to improve the wear resistance, a post-treatment sizing process can be further added to the heat-shrinkable protective sleeve.
The specific post-treatment sizing process can comprise the following steps: firstly, the irradiated finished product is soaked and passed through from the vinegar-acrylic solution. Then, the soaked finished product is primarily extruded by a compression roller and then is sent into a high-temperature oven (the temperature is 150 ℃ and 320 ℃, and the machine speed is more than 500m/H) to pass through. And finally, drying and shaping by a high-temperature oven to form a uniform adhesive film on the surface of the film.
In some embodiments, the vinyl acetate-acrylic aqueous solution can be obtained by mixing water and vinyl acetate-acrylic emulsion in a one-to-one ratio, and in equal proportions.
Besides the vinegar-acrylic solution, other glue or two auxiliary agents can be used in a matching mode to improve the wear-resisting, heat-preserving and/or impact-resisting performance of the heat-shrinkable protective sleeve.
It should be noted that when further improvement of wear resistance is required, it can also be achieved by increasing the thickness of the heat-shrinkable protective sleeve, making the yarn more highly wear-resistant (such as nylon aramid or other mixture of fibers) and/or increasing the concentration of the vinyl acetate solution to increase the thickness of the surface film of the finished product.
In some embodiments, the warp and weft densities of the heat shrinkable protective sleeve may be increased to 50 and 17, respectively, to increase the density of the heat shrinkable protective sleeve.
When the thickness and the density of the thermal shrinkage protective sleeve are increased, a compact layer can be formed during thermal shrinkage, and therefore the technical effect of improving the heat preservation performance of the product is achieved. Preferably, a heat insulating material (such as ceramic fiber with low thermal conductivity) can be added or a heat insulating glue can be dip-coated to further improve the heat insulating performance.
Fig. 1 is a schematic diagram of a flower chain arrangement manner provided in the embodiment of the present invention. Fig. 2 is a schematic view of a threading manner provided in the embodiment of the present invention. Based on the lace arrangement mode and the threading mode shown in fig. 1 and fig. 2, the woven belts with the connected double-layer structure can be obtained by weaving through a weaving machine, so that the heat-shrinkable protective sleeve of the embodiment of the invention is obtained.
In this embodiment, two different pan heads (e.g., 2-by-one/1-by-one) are used so that the inner and outer sleeve layers can be braided from different yarn materials.
Therefore, on the premise of meeting the requirements of wear resistance, impact resistance and heat insulation resistance, technicians are allowed to select corresponding material combinations according to different working conditions so as to achieve the effects of reducing the material consumption and the cost.
The chain is a chain with pattern plates and can be used for controlling the motion track of the heald frame. Through the movement of the heald frame and the flower chain, the warp and weft can be crossed, floated and sunk according to a set rule, and are interwoven to form a target fabric.
In a fabric, the point at which the warp and weft threads intersect may be referred to as a "stitch point". According to the difference of the relative position relationship of the longitude and latitude, the method can be divided into two types of high (indicated by X in figure 1) and low (indicated by O in figure 1). Wherein "high" indicates the weave point of the warp yarn over the weft yarn and "low" indicates the weave point of the warp yarn under the weft yarn.
As shown in fig. 1, 8 flower chain circulation units, numbered 1-8, are included. The flower chains 1 to 6 are used for weaving the outer layer of the sleeve, and the flower chains 7 to 10 are used for weaving the inner layer of the sleeve.
As shown in fig. 2, the heat-shrinkable protective sleeve is composed of a lock side, a selvage side, and a middle repeated arrangement portion between the lock side and the selvage side. The outer sleeve layer may include an upper outer layer and an upper inner layer, and the outer sleeve layer may include a lower inner layer and a lower outer layer.
Specifically, on the heddle pieces of the heald frames numbered 1-6, each piece passes through two 900D yarns, and on the heddle pieces of the heald frames numbered 7-10, each piece passes through one 900D yarn and is used for weaving the corresponding sleeve inner layer and the sleeve outer layer respectively.
Through the arrangement of the flower chains and the threading mode, the special fabric with the connected double-layer structure can be woven.
In conclusion, the heat-shrinkable protective sleeve provided by the embodiment of the invention is of a connected double-layer structure, can play a good wear-resistant protection role when the automobile rubber tube or the wire harness has friction interference, and can prevent the wire harness or the rubber tube from being worn out and play a protection role when the wire harness or the rubber tube and other parts are contacted and rubbed with each other due to vibration in the driving process of an automobile.
The polyester multifilament yarn with thick thickness and low thermal conductivity is used. After thermal shrinkage, the final inside diameter can be reduced to 1/2 of the original inside diameter, so that the thickness and the degree of compactness are enhanced, and the heat dissipation of the parts needing to be insulated can be reduced.
Furthermore, the double-layer structure formed by the high-strength yarns with the large D number is used, and the thickness is thick, so that the protected parts can be effectively protected when the automobile is impacted, and the anti-impact effect is achieved.
Compared with the common non-linked hollow double-layer structure, the connected double-layer structure obtained by the weaving method has smoother and more attractive appearance after thermal shrinkage, and simultaneously effectively solves the problem of port scattering.
In addition, the wear resistance can be further improved by a mode of dip-coating the vinyl acetate-acrylic latex after irradiation to form a uniform transparent adhesive layer on the surface. Meanwhile, the linking effect of the adhesive layer can also help to improve the problem of port opening scattering.
It should be understood that the technical solutions and concepts of the present invention may be equally replaced or changed by those skilled in the art, and all such changes or substitutions should fall within the protection scope of the appended claims.
Claims (6)
1. A heat shrinkable protective sleeve, comprising: the sleeve comprises a sleeve inner layer and a sleeve outer layer; the outer surface of the outer layer of the sleeve is provided with a uniform adhesive film based on the vinyl acetate-acrylic emulsion;
the inner layer and the outer layer of the sleeve are connected double-layer structures which are woven in a preset chain arrangement and drafting mode; the inner layer and the outer layer of the sleeve are made of different yarn materials; the predetermined flower chain arrangement used to weave the outer layer of the sleeve is:
1: high-low-high-low
2: high-low-high-low
3: high-low-high
4: high-low-high-low
5: high-low-high-low
6: high-low
7: high-low-high-low
8: low-high-low
Wherein, 1-8 are the numbers of the flower chain circulating units, high represents that the warp is above the weft, low represents that the warp is below the weft;
the predetermined flower chain arrangement for braiding the inner layer of the sleeve is:
1: high-high
2: high-low
3: high-low
4: low-low
5: high-high
6: low-high-low
7: high-low-high
8: low-low
Wherein, 1-8 are the numbers of the flower chain circulating units, high represents that the warp is above the weft, low represents that the warp is below the weft;
the flower chain comprises ten flower chains from 1 to 10, the flower chain for weaving the outer layer of the sleeve comprises flower chains from 1 to 6, and the flower chain for weaving the inner layer of the sleeve comprises flower chains from 7 to 10;
the thermal shrinkage protective sleeve comprises a lock side, a cloth side and a middle repeated arrangement part between the lock side and the cloth side: the outer layer of the sleeve comprises an upper outer layer and an upper inner layer, and the outer layer of the sleeve comprises a lower inner layer and a lower outer layer.
2. The heat-shrinkable protective sleeve according to claim 1, wherein the threading means specifically comprises:
the lock side adopts the following yarn arrangement mode:
3 upper outer layer-2 lower outer layer-1 upper outer layer-6 lower outer layer-3 upper outer layer-2 lower outer layer-5 upper outer layer-4 upper outer layer-1 upper outer layer-2 lower outer layer-3 upper outer layer-4 lower outer layer-5 upper outer layer-6 lower outer layer-1 upper outer layer-2 lower outer layer-3 upper outer layer-9 upper inner layer-7 upper inner layer-4 lower outer layer-8 upper inner layer-10 lower inner layer-8 upper inner layer-1 upper outer layer-7 lower inner layer-2 lower outer layer-8 lower inner layer-3 lower outer layer-7 lower inner layer-4 lower outer layer-8 lower inner layer-5 upper outer layer-7 lower inner layer-6 lower outer layer-8 lower inner layer;
the middle repeat arrangement part adopts the following yarn arrangement mode:
1 upper outer layer-7 upper inner layer-2 upper outer layer-8 upper inner layer-3 upper outer layer-7 upper inner layer-4 lower outer layer-8 upper inner layer-5 upper outer layer-7 upper inner layer-6 lower outer layer-8 lower outer layer;
the cloth side adopts the following yarn arrangement mode:
8 lower inner layer-10 upper inner layer-8 lower inner layer-4 lower outer layer-7 lower inner layer-9 lower inner layer-3 upper outer layer-2 lower outer layer-1 upper outer layer-6 lower outer layer-3 upper outer layer-5 lower outer layer-4 lower outer layer-1 upper outer layer-2 lower outer layer-6 lower outer layer-5 upper outer layer-4 lower outer layer-3 upper outer layer-2 lower outer layer-1 upper outer layer-6 lower outer layer-5 upper outer layer-3 lower outer layer-4 upper outer layer-2 lower outer layer-1 upper outer layer;
wherein the numbers 1 to 10 are the heald frame numbers of the yarns.
3. The heat-shrinkable protective sleeve according to claim 2, wherein on the heddle of heald frames numbered 1-6, each of the heddle passes through two 900D yarns; on the heddle pieces of heddle frames numbered 7 to 10, each piece passes through one 900D yarn.
4. The heat shrinkable protective sleeve of claim 1 wherein two different coils are used to knit said inner sleeve layer and said outer sleeve layer from different yarn materials when knitting the heat shrinkable protective sleeve.
5. The heat-shrinkable protective sleeve according to claim 1, wherein the thickness of the heat-shrinkable protective sleeve of the connecting double-layer structure is 1.6mm or more.
6. The heat shrinkable protective sleeve of claim 1 wherein the yarn material is 900D polyester yarn.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910736587.5A CN110592770B (en) | 2019-08-09 | 2019-08-09 | Thermal shrinkage protective sleeve |
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|---|---|---|---|
| CN201910736587.5A CN110592770B (en) | 2019-08-09 | 2019-08-09 | Thermal shrinkage protective sleeve |
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| CN110592770A CN110592770A (en) | 2019-12-20 |
| CN110592770B true CN110592770B (en) | 2022-05-24 |
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| CN2285529Y (en) * | 1996-06-15 | 1998-07-01 | 黄又春 | Fibre reinforced type single yarn crosslinking thermal contraction net |
| CN101069757B (en) * | 2007-05-25 | 2010-11-17 | 东华大学 | Two-lay machine-knitted structure textile type artificial blood vessel |
| CN102110963A (en) * | 2009-12-29 | 2011-06-29 | 深圳市宏商材料科技股份有限公司 | Self-lubricating heat-shrinkable sleeve |
| CN106012240B (en) * | 2016-07-18 | 2018-10-02 | 水力消防科技有限公司 | A kind of fire hose bilayer made-up belt and preparation method thereof |
| CN107475854B (en) * | 2017-10-10 | 2019-12-31 | 东华大学 | Structural phase transformation type radial shrinkage and expansion pipe fabric and preparation method and application thereof |
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