CN103306051A - Thin jute fiber non-woven fabric for packaging and production method for thin jute fiber non-woven fabric - Google Patents
Thin jute fiber non-woven fabric for packaging and production method for thin jute fiber non-woven fabric Download PDFInfo
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- CN103306051A CN103306051A CN2012100562118A CN201210056211A CN103306051A CN 103306051 A CN103306051 A CN 103306051A CN 2012100562118 A CN2012100562118 A CN 2012100562118A CN 201210056211 A CN201210056211 A CN 201210056211A CN 103306051 A CN103306051 A CN 103306051A
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Abstract
The invention discloses a thin strong-strength environment-friendly jute fiber non-woven fabric for packaging and a production method for the thin jute fiber non-woven fabric, and belongs to a non-woven material and a processing method for the same. The thin jute fiber non-woven fabric for packaging comprises the following components in percentage by weight: 65 to 75 percent of jute fiber and 25 to 35 percent of poly lactic acid (PLA) fiber. The thin jute fiber non-woven fabric for packaging is produced by the following steps of performing enzymatic treatment and primary combing on jute serving as a raw material, cutting and thinning the jute fibers, mixing the jute fibers with the PLA fibers, performing secondary combing and primary drafting crossing to form a mesh, performing secondary drafting after needling pre-entanglement, and performing a hot rolling procedure to melt, solidify and shape the PLA fibers. The thin jute fiber non-woven fabric is strong in strength and short in process flow and degradable, can be widely used for upscale shopping bags, mulching films and other packaging materials, and has broad market prospect, and the jute fibers are required to be degummed.
Description
Technical field
The present invention is specifically related to a kind of packing with slim tossa nonwoven fabric and manufacture method thereof.
Background technology
Along with improving constantly of people's environmental consciousness, " green ", " environmental protection " are more and more paid close attention to by people, the wait in expectation marketization supply of environmental protection packing of increasing consumer.Main flexible packing material mainly contains two kinds of plastics, stationeries at present.Plastics packed developing direction is degradative plastics, and each state is all in the research of strengthening degradative plastics, and the acceleration practicalization.The increase of production of paper products is very fast, and proportion is maximum.Because the plastic products main source is to face exhausted petroleum resources, should reclaim as far as possible, but since present stage the production cost that reclaims again far above direct production cost, be difficult to accomplish at existing Under the market economy condition.In the face of day by day serious white pollution problems, people wish to seek a kind of energy and substitute existing plastics performance, do not cause again the environment-friendly materials of white pollution.
Tossa is with its cheap price, and excellent performance is paid close attention to by people gradually, and jute is the natural fabric of green environmental protection degradable, and the chemical fibre of hard degradation has the advantage that can not be ignored relatively.Packing articles green, environmental protection, degradable that tossa is made.In Europe, some luxury stores or classic brands are made with jute for the commodity bundle pack that the consumer provides, and be goodlooking and durable.In recent years, importer was more and more higher to the environmental requirement of goods packing, and natural tossa has catered to this trend.Yet lignin and the gum level of tossa are high, fiber is thick and stiff, fiber different parts discreteness is large etc., had a strong impact on its spinnability, can't be directly fixed for having the crudefiber crop non-weaving cloth of some strength, obtain to have the tossa of certain spinnability, just must at first tossa be become more meticulous.The process that process of refinement namely attenuates the jute process of fiber, usual method is come unstuck exactly, main method has biological enzyme, chemical-biological combined techniques and modification method etc., but no matter be chemical Degumming or biochemical degumming, all added a lot of chemical raw materials, and be that very strong corrosivity is arranged, environmental pollution is serious, and the relatively difficulty of coming unstuck, the fine rate that falls when carding is higher, can't be directly fixed for having the crudefiber crop non-weaving cloth of some strength after becoming to net.The prepared tossa of refinement technology by present jute process of fiber is second-rate, fiber is thick, short, hard, the requirement that the indexs such as its uniformity, length, fineness, intensity not only do not reach textile fiber, even can't satisfy the requirement for preparing composite, nonwoven material.
The conventional production process of crudefiber crop nonwoven fabric is: jute is through coming unstuck, mix shredding, after the dedusting removal of impurities, first carry out a combing through carding machine, the stripping fiber crops become net, carry out secondary through random web-laying equipment again and become net, the flax fibre net after secondary becomes net carries out the fixed film forming of chemical adhesion with adhesive, carries out satinage finally by cold-rolling mill.Its shortcoming is as follows:
1) at present domestic and international jute products production technology at first must be come unstuck to jute, no matter is chemical Degumming or biochemical degumming, and environmental pollution is serious;
2) processing technology routine is complicated, need configure simultaneously mechanical carding web former group and random web-laying equipment group, and the equipment configuration is high;
3) production efficiency of this processing technology routine is subject to the output restriction of air lay, yields poorly, and product cost is high;
4) need to use chemical adhesive in the production process, the production process environmental pollution is heavy, and workman's operating environment is abominable, and additional environmental protection facility drops into high.
The research and development unit of domestic more representational crudefiber crop nonwoven fabric is crudefiber crop research institute of the Chinese Academy of Sciences and bauhinia textile technology limited company at present.Crudefiber crop research institute of the Chinese Academy of Sciences discloses in patent CN1311733C ramee has been carried out chemical adhesion with synthetic resinoid type adhesive with ramee after by roller card and air lay, and then further applies water repellent in this ramie nonwoven surface and form.There is following shortcoming in this technology:
1) length of used ramee and fineness are difficult to satisfy simultaneously mechanical carding and become net and air-flow technological requirement into the net, and actual production is had any problem;
2) use synthetic resinoid type adhesive to improve to a certain extent the brute force of crudefiber crop nonwoven fabric, but do not reach the powerful requirement of packaging material far away, the packaging material that can't need as high-grade shopping bag and grain package bag etc. holding capacity, and the surface density uniformity of this crudefiber crop nonwoven fabric is relatively poor, and surface texture and printing are poor when using as packaging material;
3) contained synthetic resinoid type adhesive and fluorinated adhesive all are to be difficult for degradable material, and have lost the meaning of flax fibre Natural Degradation behind the flax fibre compound use.
Bauhinia textile technology limited company has carried out scientific and technical innovation and has applied for some patents in jute process of fiber taking, but it becomes more meticulous and come unstuck with the high-performance biochemical treatment when obtaining ultra-fine tossa, has brought secondary pollution to environment.In addition, the cost of this technology path is higher, is not suitable for promoting as Application Areass such as packaging material.
In sum, the fibriilar process technology of present domestic jute is more backward, and production efficiency is low, and environmental pollution is serious, the process equipment function singleness, and the rapidoprint waste is serious, and the products obtained therefrom brute force is low, and quality is loose.
Summary of the invention
The object of the invention is to solve the defectives such as low, the difficult degraded of existing bast-fibre nonwoven fabric intensity, provide a kind of high strength and high-flexibility, degradable, the packing that is especially suitable for use as the packaging material that brute force is had relatively high expectations is with slim tossa nonwoven fabric.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of packing is with slim tossa nonwoven fabric, and its component comprises by weight percentage: tossa 65 ~ 75%, PLA fiber 25 ~ 35%.
Preferred as such scheme, described packing with the component of slim tossa nonwoven fabric is by weight percentage: tossa 68%, PLA fiber 32%.
Further preferred as technique scheme, described PLA fiber is low melting point PLA, more is conducive to the manufacturing of nonwoven fabric.
Another object of the present invention is to provide a kind of flow process that need not degumming process short, efficient is high, and cost is low, and free of contamination above-mentioned packing is with slim tossa nonwoven fabric manufacture method.The method comprises the steps:
(1) tossa being carried out health processes;
(2) tossa after health is processed is carried out a combing, then cut off refinement, make the tossa fineness descend 50%, becoming diameter is the ultra-fine tossa of 20 ~ 45 μ m;
(3) with ultra-fine tossa be crossed as net with the mixed fiber of PLA fiber through the combing second time, a drawing-off;
(4) will carry out the drawing-off second time after the pre-entanglement of acupuncture through the blended fiber that a drawing-off is crossed as after net is processed, making the PLA fiber of filament shape and ultra-fine tossa formation surface density is 25 ~ 85g/m
2Fiber;
(5) fiber after the drawing-off second time is processed being carried out hot rolling makes the fixed typing of PLA fibers melt become the tossa nonwoven fabric.
The present invention is by the exploitation of flax fibre cut-out and refinement technology of preparing, make the flax fibre fineness descend 50%, becoming diameter is that 20-45 μ m, length satisfy the ultra-fine cast tow fiber that function distributes and requires, flexibility, one-tenth net and the spreadability of flax fibre have greatly been improved, for thin layer lapping and the high reinforcement reinforcing of flax fibre have been created condition, the environmental pollution of having avoided the jute degumming process to produce; Then the blended fiber that is crossed as through a drawing-off after net is processed is adopted the pre-suitable three road acupunctures of adopting of tangling of acupuncture, in order to obtain higher intensity and to tangle more abundant and don't cause fibrous fracture, needling density is selected 195 ~ 225 thorn/cm
2, depth of needling is to pass through for the second time drawing-off of fibre web thin layer behind 10 ~ 15mm again, making the PLA fiber of filament shape and ultra-fine flax fibre formation surface density is 25 ~ 85g/m
2Fiber web, the surface density of gained fibre web is reduced greatly; Further reinforce through low melting point PLA fiber hot melt again after the pre-for the second time two-way drawing-off of fibre web process of tangling of acupuncture, the product tensile strength that obtains is large, and fully biodegradable, the production process environmental protection, can be widely used in and do in high-grade shopping bag, mulch film and other packaging material, market prospects are wide, and society, economy, ecological benefits are remarkable.
For obtaining better caking property, as of the present invention preferred, the hot-rolled temperature in the described step (5) is 160 ~ 200
oC.
The tossa nonwoven thickness that step of the present invention (5) becomes is 0.25 ~ 0.35mm, surface density 30 ~ 100g/m
2
In sum, the present invention has following outstanding advantages and beneficial effect:
1) product of the present invention has advantages of that simultaneously grammes per square metre is light, brute force is high, pliability good, be especially suitable for use as the packaging material that brute force is had relatively high expectations, the mechanical property contrast of the crudefiber crop nonwoven fabric of the mechanical property of institute of the present invention development and Chinese Academy of Sciences's exploitation is as shown in table 1;
Table 1
2) the present invention makes tossa become micro staple fiber from process of fiber by mechanical cutting and refinement technology, non-environmental-pollution in the process, and fully kept the natural premium properties of tossa;
3) the present invention without, cost low be a kind of mode of complete environmental protection, without waste water, waste gas etc., environmentally safe meets the trend of modern social development;
4) the present invention sneaks into degradable PLA fiber as fibrous skeleton in tossa, by being combined into net and reinforcement technique, make the mode that after the PLA fibers melt tossa is bondd mold high-intensity crudefiber crop nonwoven material, solved traditional tossa difficulty of coming unstuck, the fine rate that falls when carding is higher, become behind the net can't be directly fixed be the deficiency with crudefiber crop non-weaving cloth of some strength;
5) the present invention is take jute and PLA as main raw material, adopt the nonwovens process processing and fabricating to form environment-friendly degradable high strength thin layer type nonwoven fabric, this packaging material are with respect to not only raw material environmental protection of plastics package, low price, and brute force is higher, can be widely used in and do in high-grade shopping bag, mulch film and other packaging material, market prospects are wide, and society, economy, ecological benefits are remarkable.
Description of drawings
The process chart of manufacture method among Fig. 1 the present invention.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail.This specific embodiment only is explanation of the invention; it is not the restriction to invention; those skilled in the art can make any modification to the present embodiment as required after reading this specification, but as long as all are subject to the protection of Patent Law in claim scope of the present invention.
Embodiment 1
A kind of packing is with slim tossa nonwoven fabric, and its component is by weight percentage: tossa 65%, PLA fiber 35%.This packing makes as follows with slim tossa nonwoven fabric, and process chart is seen Fig. 1:
(1) tossa being carried out health processes;
(2) tossa after health is processed is carried out a combing, then cut off refinement, make the tossa fineness descend 50%, becoming diameter is the ultra-fine tossa of 20 μ m;
(3) with ultra-fine tossa be crossed as net with the mixed fiber of PLA fiber through the combing second time, a drawing-off;
(4) will carry out the drawing-off second time after the pre-entanglement of acupuncture through the blended fiber that a drawing-off is crossed as after net is processed, making the PLA fiber of filament shape and ultra-fine tossa formation surface density is 25g/m
2Fiber;
(5) fiber after the drawing-off second time is processed being carried out hot rolling makes the fixed typing of PLA fibers melt become the tossa nonwoven fabric.
Embodiment 2
A kind of packing is with slim tossa nonwoven fabric, and its component is by weight percentage: tossa 75%, PLA fiber 25%.This packing makes as follows with slim tossa nonwoven fabric:
(1) tossa being carried out health processes;
(2) tossa after health is processed is carried out a combing, then cut off refinement, make the tossa fineness descend 50%, becoming diameter is the ultra-fine tossa of 45 μ m;
(3) with ultra-fine tossa be crossed as net with the mixed fiber of PLA fiber through the combing second time, a drawing-off;
(4) will be crossed as blended fiber after net is processed through a drawing-off through three road acupunctures, needling density is 195 thorn/cm
2, depth of needling is 10mm, carries out the drawing-off second time after pre-the entanglement, making the PLA fiber of filament shape and ultra-fine tossa formation surface density is 85g/m
2Fiber;
(5) with the fiber after processing through second time drawing-off 160
oCarrying out hot rolling under the C makes the fixed typing of PLA fibers melt become the tossa nonwoven fabric.
Embodiment 3
A kind of packing is with slim tossa nonwoven fabric, and its component is by weight percentage: tossa 68%, PLA fiber 32%.This packing makes as follows with slim tossa nonwoven fabric:
(1) tossa being carried out health processes;
(2) tossa after health is processed is carried out a combing, then cut off refinement, make the tossa fineness descend 50%, becoming diameter is the ultra-fine tossa of 30 μ m;
(3) with ultra-fine tossa be crossed as net with the mixed fiber of PLA fiber through the combing second time, a drawing-off;
(4) will be crossed as blended fiber after net is processed through a drawing-off through three road acupunctures, needling density is 210 thorn/cm
2, depth of needling is 120mm, carries out the drawing-off second time after pre-the entanglement, making the PLA fiber of filament shape and ultra-fine tossa formation surface density is 55g/m
2Fiber;
(5) with the fiber after processing through second time drawing-off 180
oCarrying out hot rolling under the C makes the fixed typing of PLA fibers melt become the tossa nonwoven fabric.
Embodiment 4
A kind of packing is with slim tossa nonwoven fabric, and its component is by weight percentage: tossa 70%, low melting point PLA fiber 30%.This packing makes as follows with slim tossa nonwoven fabric:
(1) tossa being carried out health processes;
(2) tossa after health is processed is carried out a combing, then cut off refinement, make the tossa fineness descend 50%, becoming diameter is the ultra-fine tossa of 30 μ m;
(3) with ultra-fine tossa be crossed as net with the mixed fiber of PLA fiber through the combing second time, a drawing-off;
(4) will be crossed as blended fiber after net is processed through a drawing-off through three road acupunctures, needling density is 225 thorn/cm
2, depth of needling is 15mm, carries out the drawing-off second time after pre-the entanglement, making the PLA fiber of filament shape and ultra-fine tossa formation surface density is 100g/m
2Fiber;
(5) with the fiber after processing through second time drawing-off 200
oCarrying out hot rolling under the C makes the fixed typing of PLA fibers melt become the tossa nonwoven fabric.
The manufacture method of above-described embodiment need not jute is carried out degumming process, adopt tossa cut-out and refinement technology to make the flax fibre fineness descend 50%, becoming diameter is that 20-45 μ m, length satisfy the ultra-fine cast tow fiber that function distributes and requires, and has greatly improved flexibility, one-tenth net and the spreadability of flax fibre.
The present invention with the high living beings tossa of easily biological-degradable, good hygroscopicity, intensity as packing with easily degrade matrix fiber in the tossa nonwoven fabric of slim high strength environmental protection, with PLA fiber that can complete biodegradable as the fibrous skeleton that strengthens tossa, adopt pre-needling and heat bonding composite consolidation technology, make ultra-fine numb staple fibre and PLA filament mutually intersect, tangle or coat, form " fence type " and " clad type " ruggedized construction.
The Performance Ratio of the crudefiber crop nonwoven fabric of the tossa nonwoven fabric of the embodiment of the invention 1 ~ 5 and crudefiber crop research institute of the Chinese Academy of Sciences is more as shown in table 2.
If product of the present invention is under equal price, cost performance is best, and the user buys " value-for-money ".The average market price of this series products of present is about 40,000 yuan/t, and the average price of product of the present invention is about 2.5 ten thousand yuan/t, compares with same kind of products at abroad to have great superiority of effectiveness.The present average price of this Project Product is 2.5 ten thousand yuan/t; Combination property is equivalent to imported product, and price only be 70% less than, so product of the present invention has very high cost performance and stronger competitiveness.
The technology that not detailed part is well known to the skilled person among the present invention.
Table 2
Claims (8)
1. a packing is characterized in that with slim tossa nonwoven fabric, and its component comprises by weight percentage: tossa 65 ~ 75%, PLA fiber 25 ~ 35%.
2. a kind of packing according to claim 1 is characterized in that with slim tossa nonwoven fabric, and its component is by weight percentage: tossa 68%, PLA fiber 32%.
3. a kind of packing according to claim 2 is characterized in that with slim tossa nonwoven fabric, and described PLA fiber is low melting point PLA.
4. a kind of manufacture method of packing with slim tossa nonwoven fabric according to claim 1 is characterized in that, comprises the steps:
(1) tossa being carried out health processes;
(2) tossa after health is processed is carried out a combing, then cut off refinement, make the tossa fineness descend 50%, becoming diameter is the ultra-fine tossa of 20 ~ 45 μ m;
(3) with ultra-fine tossa be crossed as net with the mixed fiber of PLA fiber through the combing second time, a drawing-off;
(4) will carry out the drawing-off second time after the pre-entanglement of acupuncture through the blended fiber that a drawing-off is crossed as after net is processed, making the PLA fiber of filament shape and ultra-fine tossa formation surface density is 25 ~ 85g/m
2Fiber;
(5) fiber after the drawing-off second time is processed being carried out hot rolling makes the fixed typing of PLA fibers melt become the tossa nonwoven fabric.
5. a kind of manufacture method of packing with slim tossa nonwoven fabric according to claim 4 is characterized in that, the acupuncture in the described step (4) is three road acupunctures.
6. according to claim 4 or 5 described a kind of manufacture methods of packing with slim tossa nonwoven fabric, it is characterized in that, described needling density is 195 ~ 225 thorn/cm
2, depth of needling is 10 ~ 15mm.
7. a kind of manufacture method of packing with slim tossa nonwoven fabric according to claim 6 is characterized in that, the hot-rolled temperature in the described step (5) is 160 ~ 200
oC.
8. a kind of manufacture method of packing with slim tossa nonwoven fabric according to claim 7 is characterized in that, the tossa nonwoven thickness that described step (5) becomes is 0.25 ~ 0.35mm, surface density 30 ~ 100g/m
2
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|---|---|---|---|
| CN2012100562118A CN103306051A (en) | 2012-03-06 | 2012-03-06 | Thin jute fiber non-woven fabric for packaging and production method for thin jute fiber non-woven fabric |
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|---|---|---|---|
| CN2012100562118A CN103306051A (en) | 2012-03-06 | 2012-03-06 | Thin jute fiber non-woven fabric for packaging and production method for thin jute fiber non-woven fabric |
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Cited By (5)
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| CN108589035A (en) * | 2018-06-22 | 2018-09-28 | 合肥洁诺医疗用品有限公司 | A kind of high anti-cracking non-woven fabrics |
| WO2018231540A1 (en) * | 2017-06-15 | 2018-12-20 | Gpcp Ip Holdings Llc | A launderable plant-based substrate that is thermally bonded with biobased fibers |
| CN112853607A (en) * | 2020-12-29 | 2021-05-28 | 湖南南源新材料有限公司 | Jute non-woven fabric for green packaging bag and preparation method thereof |
| CN112853610A (en) * | 2020-12-29 | 2021-05-28 | 东华大学 | High-strength wear-resistant jute non-woven fabric and preparation method thereof |
| CN115160750A (en) * | 2022-07-26 | 2022-10-11 | 扬州丽华汽车内饰件有限公司 | Environment-friendly degradable jute fiber reinforced polylactic acid composite material and preparation method thereof |
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| JP7149959B2 (en) | 2017-06-15 | 2022-10-07 | ジーピーシーピー アイピー ホールディングス エルエルシー | Washable plant-based material thermally bonded to bio-based fibers |
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