CN103233324A - Low-cost collagen fiber reconstituted leather and manufacturing method thereof - Google Patents
Low-cost collagen fiber reconstituted leather and manufacturing method thereof Download PDFInfo
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- CN103233324A CN103233324A CN2013101192254A CN201310119225A CN103233324A CN 103233324 A CN103233324 A CN 103233324A CN 2013101192254 A CN2013101192254 A CN 2013101192254A CN 201310119225 A CN201310119225 A CN 201310119225A CN 103233324 A CN103233324 A CN 103233324A
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Abstract
The invention relates to a low-cost collagen fiber reconstituted leather. The reconstituted leather comprises the following ingredients in percentage by weight: collagen fiber 85-99% and viscose fiber 1-15%; and preferably, the length of the collagen fiber is more than 1 cm, and the length of the viscose fiber is more that 2 cm. The invention further relates to a technique for manufacturing the reconstituted leather. According to the method, low-cost viscose fiber are mixed in the reconstituted leather to reduce the manufacturing cost of the reconstituted leather, and meanwhile, the content of the viscose fiber is controlled within 15% so as to allow the reconstituted leather to have similar hand feel to real leather; and in the technique, the viscose fiber with a length of more than 2 cm is selected to be mixed with the collagen fiber, then cross lapping is carried out, and by using the characteristic that the viscose fiber is long and with the help of mixed opening and embroidering process, an intertwined structure is formed by a single viscose fiber and a plurality of collagen fibers, so as to improve the strength of the reconstituted leather. The reconstituted leather can be used for making sofas or handbags.
Description
Technical field
The present invention relates to nonwoven material and manufacture method thereof, be specifically related to a kind of low-cost regenerated collagen fiber leather and manufacture method thereof.
Background technology
The tailing quantity of natural corium is very big, if can carry out the secondary utilization to it, and particularly secondary operations becomes regenerated bark, can produce sizable wealth, simultaneously energy-saving and environment friendly is produced positive meaning.At present, utilize the method that the tailing of natural corium is processed into regenerated bark mainly to comprise: fragment Method for bonding, fiber Method for bonding and the solid method of fiber thorn.Wherein, poor through the regenerative leather feel that the fiber Method for bonding obtains, but the intensity height; Though inferior slightly through the regenerative leather intensity that the solid method of fiber thorn obtains, feel is near corium.But, no matter be to adopt the fiber Method for bonding, still adopting the solid method of fiber thorn, the production cost of regenerative leather is all very high.
Make in the regenerated bark method in the blended fiber of utilizing collagenous fibres to mix with other fibers to obtain, other fibers that add mainly are the fibers with hot melt adhesive characteristic, and play the bound collagen fiber, improve the purpose of regenerated bark intensity, as the regenerative leather of mentioning among patent CN 102115955 B.Meanwhile, in this patent, destroy the feel on regenerated bark surface for fear of the hot-melt adhesive fiber that adds, the ad hoc fibre net structure of counting sandwich style, with the fibre web of high hot-melt adhesive fiber content as the middle level.This method needs three and becomes the net system when lapping, to the requirement height of equipment, also improved production cost naturally.
At the existing high shortcoming of regenerated bark production cost, be necessary to develop a kind of low cost and performance near regenerated collagen fiber leather and a kind of simple process method for the manufacture of this low-cost regenerated collagen fiber leather of corium.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of low cost and performance to approach the regenerated collagen fiber leather of energy corium.
Simultaneously, the technical issues that need to address of the present invention also are to provide a kind of process for the manufacture of this regenerated collagen fiber leather.
The technical issues that need to address of the present invention are achieved through the following technical solutions:
A kind of low-cost regenerated collagen fiber leather, its Web materials is formed and percentage by weight is: collagenous fibres 85 ~ 99%, viscose 1 ~ 15%.
Preferably, in this regenerative leather, the length of collagenous fibres is more than the 1cm, and the length of viscose is more than the 2cm.Preferably, the length of collagenous fibres is 1 ~ 3cm.
A kind of manufacture method of above-mentioned low-cost regenerated collagen fiber leather may further comprise the steps successively:
(1) separates fibre: corium is separated fibre, form collagenous fibres;
(2) shredding: collagenous fibres and viscose mixed obtain blended fiber, again blended fiber is used the opener shredding; In the blended fiber, collagenous fibres weight accounts for 85 ~ 99%;
(3) lapping: the blended fiber after the shredding is paved into net;
(4) thorn is solid: the fibre web of completing is carried out positive and negative thorn handle admittedly, form base cloth;
(5) side cut, rolling, packing: after the part that the gained base cloth is irregular, unnecessary trims, rolling, packing.
Preferably, in above-mentioned manufacture method, corium is the corner blanking in the process hides processing in the step (1).
Preferably, in above-mentioned manufacture method, the length of collagenous fibres is more than the 1cm in the step (2), and the length of viscose is more than the 2cm; And before collagenous fibres and viscose mixing, also need earlier collagenous fibres and each personal opener shredding of viscose.
Preferably, in above-mentioned manufacture method, after blended fiber is used the combing of combing lapping machine in the step (3), use combing lapping machine through the staggered lapping of broadwise.
Further preferably, in above-mentioned manufacture method, after the lapping of combing lapping machine, also need with the air-laid machine the lapping of blended fiber stereo staggered in the described step (3).
Preferably, in above-mentioned manufacture method, utilize spun-laced machine just turning one's coat the fibre web of completing in the step (4) and sting solid the processing, form base cloth.
Further preferably, in above-mentioned manufacture method, before water thorn thorn is solid, also need successively to prewet in the step (4) and thorn in advance at least one times, namely earlier the fibre web elder generation process of completing is prewetted, the pressure of prewetting is 2 ~ 6MPa, the time of prewetting is 2 ~ 5 seconds, then sting in advance again, pre-thorn pressure is 30 ~ 80 MPa, the pre-thorn time is 1 ~ 3 second, utilizes the above High-Pressure Water of spun-laced machine 200MPa just turning one's coat then and stings solid the processing, press dry moisture then, the formation moisture is 10 ~ 55% base cloth, dries moisture then.
Preferably, in above-mentioned manufacture method, step (4) bake out temperature is 40 ~ 100 ℃, and drying time is 3 ~ 12 minutes.
Compared with prior art, the present invention has the following advantages:
1. a kind of low-cost regenerated collagen fiber leather of the present invention and manufacture method thereof, in this regenerative leather, the fibre web viscose cheaply that mixed has reduced the production cost of regenerative leather.
2. a kind of low-cost regenerated collagen fiber leather of the present invention and manufacture method thereof, in this regenerative leather, the control of the percetage by weight of viscose is in 15% the time, and it has the close feel with corium.
3. a kind of low-cost regenerated collagen fiber leather of the present invention and manufacture method thereof, at the defective that length is short, regenerative leather intensity is low of separating fine back collagenous fibres, in this manufacture method, select for use length in the viscose more than the 2cm and lapping again after collagenous fibres mix, utilize the long characteristics of viscose length, and by mixing the solid technology of shredding and thorn, can make single viscose and many collagenous fibres produce winding arrangement; Compare with the regenerative leather of only being made up of the collagenous fibres of same length, the horizontal stroke of this regenerative leather, machine direction tear all improve 2 ~ 5N, and the cross directional stretch fracture strength has also improved 5 ~ 14N, on the intensity more near corium.
4. a kind of low-cost regenerated collagen fiber leather of the present invention and manufacture method thereof at the low defective of regenerative leather intensity, in this manufacture method, are selected for use combing lapping and air-laid to mix and are used, and make that the fiber net structure that forms is more fine and close.
5. a kind of low-cost regenerated collagen fiber leather of the present invention and manufacture method thereof at the expensive defective of gas lapping machine, in this manufacture method, because the existence of long viscose can only select for use combing lapping machine to come lapping, have been saved equipment expense.
This regenerated collagen fiber leather can be used to make sofa and case and bag etc. after compound with other layer of cloths and/or leather layer.
The specific embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is described further.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
At first, the evaluation method that following each embodiment is adopted is carried out general description.
Tensile properties: based on the stretching test method of JIS-L1096-1964 fabric, measure tensile break strength.Wherein, serve as vertically with the direct of travel of fabric treating that tangles not, the direction vertical with the direct of travel of the fabric treating not of tangling measured at transverse and longitudinal respectively for laterally.In addition, condition determination is for to carry out under the environmental condition of 23 ℃ of temperature, humidity 65%.
Tear characteristics: based on the stretching test method of JIS-L1096-1964 fabric, measured tearing strength.Wherein, be determined in length and breadth and carry out respectively on the direction.In addition, condition determination is for to carry out under the environmental condition of 23 ℃ of temperature, humidity 65%.
Embodiment 1
The present invention relates to a kind of low-cost regenerated collagen fiber leather, its Web materials is formed and percentage by weight is: collagenous fibres 99%, viscose 1%; Wherein, the length of collagenous fibres is 1 ~ 3cm, and the length of viscose is 2 ~ 2.5cm.The thickness of this regenerative leather is 0.5 ~ 3mm, and horizontal and vertical tearing toughness reaches 23 ~ 32N, and horizontal and vertical TENSILE STRENGTH reaches 58 ~ 73N.Wherein, be example with the performance of 1mm thickness regenerative leather, its result is presented in the table 1.
The invention still further relates to a kind of manufacture method of above-mentioned low-cost regenerated collagen fiber leather, it may further comprise the steps successively:
(1) separates fibre: fibre is separated in the corner blanking of corium such as pig, sheep, ox-hide in the process hides processing, formed collagenous fibres.
(2) shredding: earlier be the collagenous fibres of 1 ~ 3cm and each personal opener shredding of viscose that length is 2 ~ 2.5cm with length, after the dosing machine metering, mix according to the above ratio and obtain blended fiber, again blended fiber is used the opener shredding.
(3) lapping:
(3-1) with blended fiber with the combing of combing lapping machine after, with combing lapping machine through the staggered lapping of broadwise become grammes per square metre 150 ~ 200 restrain/square metre fibre web;
(3-2) again with the air-laid machine with the lapping of blended fiber stereo staggered become grammes per square metre 400 ~ 500 gram/square metre fibre web.
(4) thorn is solid: earlier the fibre web elder generation process of completing is prewetted, the pressure of prewetting is 2 ~ 6MPa, the time of prewetting is 2 ~ 5 seconds, then stings in advance again, and stinging pressure in advance is 30 ~ 80 MPa, the pre-thorn time is 1 ~ 3 second, then utilizing the above High-Pressure Water of spun-laced machine 200MPa just turning one's coat, the thorn thorn is solid handles, and press dry moisture then, forms moisture and be 10 ~ 55% base cloth, at last base cloth was dried 3 ~ 12 minutes at 40 ~ 100 ℃, to remove moisture fully.
(5) side cut, rolling, packing: after the part that the gained base cloth is irregular, unnecessary trims, rolling, packing.
Embodiment 2
The present invention relates to a kind of low-cost regenerated collagen fiber leather, its Web materials is formed and percentage by weight is: collagenous fibres 85%, viscose 15%; Wherein, the length of collagenous fibres is 1 ~ 3cm, and the length of viscose is 3 ~ 3.5cm.The thickness of this regenerative leather is 0.5 ~ 3mm, and horizontal and vertical tearing toughness reaches 23 ~ 32N, and horizontal and vertical TENSILE STRENGTH reaches 58 ~ 73N.Wherein, be example with the performance of 1mm thickness regenerative leather, its result is presented in the table 1.
The invention still further relates to a kind of manufacture method of above-mentioned low-cost regenerated collagen fiber leather, it may further comprise the steps successively:
(1) separates fibre: fibre is separated in the corner blanking of corium such as pig, sheep, ox-hide in the process hides processing, formed collagenous fibres.
(2) shredding: earlier be the collagenous fibres of 1 ~ 3cm and each personal opener shredding of viscose that length is 3 ~ 3.5cm with length, after the dosing machine metering, mix according to the above ratio and obtain blended fiber, again blended fiber is used the opener shredding.
(3) lapping: with blended fiber with the combing of combing lapping machine after, with combing lapping machine through the staggered lapping of broadwise become grammes per square metre 400 ~ 500 restrain/square metre fibre web.
(4) thorn is solid: earlier the fibre web elder generation process of completing is prewetted, the pressure of prewetting is 2 ~ 6MPa, the time of prewetting is 2 ~ 5 seconds, then stings in advance again, and stinging pressure in advance is 30 ~ 80 MPa, the pre-thorn time is 1 ~ 3 second, then utilizing the above High-Pressure Water of spun-laced machine 200MPa just turning one's coat, the thorn thorn is solid handles, and press dry moisture then, forms moisture and be 10 ~ 55% base cloth, at last base cloth was dried 3 ~ 12 minutes at 40 ~ 100 ℃, to remove moisture fully.
(5) side cut, rolling, packing: after the part that the gained base cloth is irregular, unnecessary trims, rolling, packing.
Embodiment 3
The present invention relates to a kind of low-cost regenerated collagen fiber leather, its Web materials is formed and percentage by weight is: collagenous fibres 88%, viscose 12%; Wherein, the length of collagenous fibres is 1 ~ 3cm, and the length of viscose is 2.5 ~ 3cm.The thickness of this regenerative leather is 0.5 ~ 3mm, and horizontal and vertical tearing toughness reaches 23 ~ 32N, and horizontal and vertical TENSILE STRENGTH reaches 58 ~ 73N.Wherein, be example with the performance of 1mm thickness regenerative leather, its result is presented in the table 1.
The invention still further relates to a kind of manufacture method of above-mentioned low-cost regenerated collagen fiber leather, it may further comprise the steps successively:
(1) separates fibre: fibre is separated in the corner blanking of corium such as pig, sheep, ox-hide in the process hides processing, formed collagenous fibres.
(2) shredding: earlier be the collagenous fibres of 1 ~ 3cm and each personal opener shredding of viscose that length is 2.5 ~ 3cm with length, after the dosing machine metering, mix according to the above ratio and obtain blended fiber, again blended fiber is used the opener shredding.
(3) lapping: with blended fiber with the combing of combing lapping machine after, with combing lapping machine through the staggered lapping of broadwise become grammes per square metre 400 ~ 500 restrain/square metre fibre web.
(4) thorn is solid: earlier the fibre web elder generation process of completing is prewetted, the pressure of prewetting is 2 ~ 6MPa, the time of prewetting is 2 ~ 5 seconds, then stings in advance again, and stinging pressure in advance is 30 ~ 80 MPa, the pre-thorn time is 1 ~ 3 second, then utilizing the above High-Pressure Water of spun-laced machine 200MPa just turning one's coat, the thorn thorn is solid handles, and press dry moisture then, forms moisture and be 10 ~ 55% base cloth, at last base cloth was dried 3 ~ 12 minutes at 40 ~ 100 ℃, to remove moisture fully.
(5) side cut, rolling, packing: after the part that the gained base cloth is irregular, unnecessary trims, rolling, packing.
Embodiment 4
The present invention relates to a kind of low-cost regenerated collagen fiber leather, its Web materials is formed and percentage by weight is: collagenous fibres 90%, viscose 10%; Wherein, the length of collagenous fibres is 1 ~ 3cm, and the length of viscose is 3 ~ 3.5cm.The thickness of this regenerative leather is 0.5 ~ 3mm, and horizontal and vertical tearing toughness reaches 23 ~ 32N, and horizontal and vertical TENSILE STRENGTH reaches 58 ~ 73N.Wherein, be example with the performance of 1mm thickness regenerative leather, its result is presented in the table 1.
The invention still further relates to a kind of manufacture method of above-mentioned low-cost regenerated collagen fiber leather, it may further comprise the steps successively:
(1) separates fibre: fibre is separated in the corner blanking of corium such as pig, sheep, ox-hide in the process hides processing, formed collagenous fibres.
(2) shredding: earlier be the collagenous fibres of 1 ~ 3cm and each personal opener shredding of viscose that length is 3 ~ 3.5cm with length, after the dosing machine metering, mix according to the above ratio and obtain blended fiber, again blended fiber is used the opener shredding.
(3) lapping:
(3-1) with blended fiber with the combing of combing lapping machine after, with combing lapping machine through the staggered lapping of broadwise, be paved into equably grammes per square metre 200 ~ 250 grams/square metre fibre web;
(3-2) use the air-laid machine with the lapping of blended fiber stereo staggered again, obtain grammes per square metre 400 ~ 500 gram/square metre fibre web.
(4) thorn is solid: earlier the fibre web elder generation process of completing is prewetted, the pressure of prewetting is 2 ~ 6MPa, the time of prewetting is 2 ~ 5 seconds, then stings in advance again, and stinging pressure in advance is 30 ~ 80 MPa, the pre-thorn time is 1 ~ 3 second, then utilizing the above High-Pressure Water of spun-laced machine 200MPa just turning one's coat, the thorn thorn is solid handles, and press dry moisture then, forms moisture and be 10 ~ 55% base cloth, at last base cloth was dried 3 ~ 12 minutes at 40 ~ 100 ℃, to remove moisture fully.
(5) side cut, rolling, packing: after the part that the gained base cloth is irregular, unnecessary trims, rolling, packing.
Comparative Examples 1
A kind of regenerated collagen fiber leather, its fibre web is made up of 100% collagenous fibres; Wherein, the length of collagenous fibres is 1 ~ 3cm.Its manufacture method is: be that the collagenous fibres of 1 ~ 3cm are raw material with length, after the shredding of collagenous fibres usefulness opener, then use successively combing lapping machine with the air-laid machine lapping become grammes per square metre 400 ~ 500 gram/square metre fibre web, obtain product after, oven dry solid through stinging, side cut, the rolling, wherein the solid operation of thorn is identical among the solid operation of thorn and the embodiment 1.The horizontal and vertical tearing toughness of the regenerative leather that obtains by this technology is 18 ~ 27N, and horizontal and vertical TENSILE STRENGTH is 46 ~ 82N.Wherein, be example with the performance of 1mm thickness regenerative leather, its result is presented in the table 1.
Table 1
| The embodiment numbering | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 |
| Regenerated bark thickness (mm) | 1 | 1 | 1 | 1 | 1 |
| Tensile break strength (laterally, kg/25mm) | 5.9 | 6.8 | 6.3 | 6.4 | 4.9 |
| Tensile break strength (vertically, kg/25mm) | 6.4 | 7.2 | 6.7 | 6.9 | 6.8 |
| Tearing strength (laterally, kg/25mm) | 2.3 | 2.5 | 2.4 | 2.4 | 2.3 |
| Tearing strength (vertically, kg/25mm) | 2.7 | 3.2 | 2.9 | 3.0 | 2.5 |
Above-mentioned each embodiment is to preferred embodiment of the present invention.Should be pointed out that for those skilled in the art under the prerequisite that does not break away from the technology of the present invention principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a low-cost regenerated collagen fiber leather is characterized in that its Web materials composition and percentage by weight thereof is: collagenous fibres 85 ~ 99%, viscose 1 ~ 15%.
2. low-cost regenerated collagen fiber leather according to claim 1, the length that it is characterized in that described collagenous fibres is more than the 1cm, the length of described viscose is more than the 2cm.
3. the manufacture method of the described low-cost regenerated collagen fiber leather of claim 1 is characterized in that may further comprise the steps successively:
(1) separates fibre: corium is separated fibre, form collagenous fibres;
(2) shredding: collagenous fibres and viscose mixed obtain blended fiber, again blended fiber is used the opener shredding; In the blended fiber, collagenous fibres weight accounts for 85 ~ 99%;
(3) lapping: the blended fiber after the shredding is paved into net;
(4) thorn is solid: the fibre web of completing is carried out positive and negative thorn handle admittedly, form base cloth;
(5) side cut, rolling, packing: after the part that the gained base cloth is irregular, unnecessary trims, rolling, packing.
4. as the manufacture method of low-cost regenerated collagen fiber leather as described in the claim 3, it is characterized in that: corium is the corner blanking in the process hides processing in the described step (1).
5. as the manufacture method of low-cost regenerated collagen fiber leather as described in the claim 3, it is characterized in that: the length of collagenous fibres is more than the 1cm in the described step (2), and the length of viscose is more than the 2cm; And before collagenous fibres and viscose mixing, also need earlier collagenous fibres and each personal opener shredding of viscose.
6. as the manufacture method of low-cost regenerated collagen fiber leather as described in the claim 3, it is characterized in that: in the described step (3) blended fiber with the combing of combing lapping machine after, with combing lapping machine through the staggered lapping of broadwise.
7. as the manufacture method of low-cost regenerated collagen fiber leather as described in the claim 6, it is characterized in that: after the lapping of combing lapping machine, also need with the air-laid machine the lapping of blended fiber stereo staggered in the described step (3).
8. as the manufacture method of low-cost regenerated collagen fiber leather as described in the claim 3, it is characterized in that: utilizing spun-laced machine just turning one's coat the fibre web of completing in the described step (4), the thorn thorn is solid handles, and forms base cloth.
9. as the manufacture method of low-cost regenerated collagen fiber leather as described in the claim 8, it is characterized in that: before water thorn thorn is solid, also need successively to prewet in the described step (4) and thorn in advance at least one times, namely earlier the fibre web elder generation process of completing is prewetted, the pressure of prewetting is 2 ~ 6MPa, the time of prewetting is 2 ~ 5 seconds, then sting in advance again, pre-thorn pressure is 30 ~ 80 MPa, the pre-thorn time is 1 ~ 3 second, utilize the above High-Pressure Water of spun-laced machine 200MPa just turning one's coat then and sting solid the processing, press dry moisture then, the formation moisture is 10 ~ 55% base cloth, dries moisture then.
10. as the manufacture method of low-cost regenerated collagen fiber leather as described in the claim 9, it is characterized in that: described step (4) bake out temperature is 40 ~ 100 ℃, and drying time is 3 ~ 12 minutes.
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