CN105835494A - Thermal storage and temperature adjustment reclaimed leather and preparation method thereof - Google Patents
Thermal storage and temperature adjustment reclaimed leather and preparation method thereof Download PDFInfo
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- CN105835494A CN105835494A CN201610186080.3A CN201610186080A CN105835494A CN 105835494 A CN105835494 A CN 105835494A CN 201610186080 A CN201610186080 A CN 201610186080A CN 105835494 A CN105835494 A CN 105835494A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2437/00—Clothing
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention provides a thermal storage and temperature adjustment reclaimed leather and a preparation method thereof. The reclaimed leather includes, from top to bottom, a sheet layer, a nonwoven fabric layer and a composite sheet layer. the preparation method comprises the steps of: wetting leather meal fiber by adding water, and mixing evenly the leather meal fiber with a waterborne polyurethane emulsion and a thermal storage microcapsule; paving the mixed material in a steel mold, forming by a hot press through two-step sectional pressing to obtain the composite sheet; stripping out the composite sheet from the mold, impregnating the non-woven fabric with the aqueous polyurethane emulsion, and attaching one composite sheet respectively to both sides of the non-woven fabric, putting the non-woven fabric back in the a steel mold, and using a hot press for hot press molding to obtain a product. The invention reduces energy consumption, avoids the damage of the leather fiber, improves the compatibility of the components, improves the uniformity of the product, and endows the flexibility and genuine leather feeling to the reclaimed leather, and increases the added value of the product.
Description
Technical field
Present invention relates particularly to a kind of heat-accumulation temperature-adjustment type regenerated leather and preparation method thereof.
Background technology
Regenerated leather manufacture method mainly has two kinds at present, and a kind of is traditional wet processing, and this kind of technology is past
Toward needing main equipment support, floor space is big, disposably puts into height, additionally, water consumption and energy consumption ten
Dividing surprising, additive is many, unfriendly to environment.Another kind is dry technology for production, and dry production regenerates
The technique of leather is following (Chinese patent " dry process for preparing regenerated leather ", application number CN 1330182A):
1, hide fiber is peeled off and is produced；
2, add polypropylene fiber and mix；
3, lapping；
4, acupuncture is pre-solid；
5, hot melt adhesive；
6, extrude, cool down.
Dry technology for production can avoid some shortcomings of wet method, but still there are the following problems: technological process is relatively
For loaded down with trivial details；Needing to be heated to the high temperature of more than 170 DEG C so that polypropylene fiber hot melt, this does not only exist energy consumption
Higher problem, and the thermal denaturation temperature of collagen fiber only has about 100 DEG C, the temperature of 170 DEG C
Under, there is serious thermal denaturation in the main component collagen fiber of shavings, destroys collagen helix knot
Structure, loses basic serviceability, and then has a strong impact on the quality of product；The plastic sense mistake of polypropylene fiber
By force, cause product kishke feel poor." Chinese leather " (volume 32 in July, 2003 the 13rd phase)
Disclosing one " regenerated leather and production process thereof ", it uses the polyurethane fiber of solid-state to mix with shavings
Compressing, i.e. use fiber blend mode, there is polyurethane fiber poor with leather glue fibril mixed effect,
The problems such as the compatibility between component is poor, and interface compatibility is bad, product evenness is the best.Comprehensive all
Prior art, all there is problems in that regenerated leather product is single, and without New function, added value is the highest, produces
Product class is relatively low.
Summary of the invention
One of the technical problem to be solved in the present invention, is to provide a kind of heat-accumulation temperature-adjustment type regenerated leather.
The present invention is achieved in that a kind of heat-accumulation temperature-adjustment type regenerated leather, including setting gradually from top to bottom
Composite sheet sheet material layers, nonwoven layer and composite sheet sheet material layers；
Described composite sheet sheet material layers includes each component of following parts by weight: shavings fiber 6 parts, the poly-ammonia of aqueous
Ester emulsion 6-18 part, accumulation of heat microcapsule 0.75-1.5 part and water 0-6 weight portion.
Preferably, the mass percent of described aqueous polyurethane emulsion is 20-35%.
The two of the technical problem to be solved in the present invention, are to provide a kind of described heat-accumulation temperature-adjustment type regenerated leather
Preparation method.
The present invention is achieved in that the preparation method of a kind of described heat-accumulation temperature-adjustment type regenerated leather, including
Following steps:
(1) taking shavings fiber 6 weight portion, the 0-6 weight portion that adds water carries out moistening, then ammonia poly-with aqueous
Ester emulsion 6-18 weight portion, accumulation of heat microcapsule 0.75-1.5 weight portion mix, and stir, are mixed
Compound material；
(2) by described mixed material, it is laid in steel die, uses hot press to carry out two step segmentations
Compressing, obtain composite sheet；Wherein, compressing parameters is as follows:
The first step: pressure is 6-20MPa, temperature is 80 DEG C-90 DEG C, and the time is 1-2min；
Second step: pressure is 6-20MPa, temperature is 90 DEG C-110 DEG C, and the time is 2-3min；
(3) described composite sheet is peeled off from mould taking-up, non-woven fabrics be impregnated in aqueous polyurethane
Emulsion 1-2min, then the upper and lower surface at described non-woven fabrics is fitted a piece of described composite sheet respectively,
It is reentered in steel die, uses hot press to carry out hot-forming, obtain product；Wherein, it is hot pressed into
The parameters of type is as follows: pressure is 6-20MPa, and temperature is 80 DEG C-110 DEG C, and the time is 1-5min.
Preferably, the mass percent of described aqueous polyurethane emulsion is 20-35%.
Preferably, in described step (1), aqueous polyurethane emulsion is in advance with 0.01-0.05 weight portion
Thickening agent thickening mixes with other material after processing again.
It is an advantage of the current invention that: reduce energy consumption, it is to avoid leather fiber is destroyed, and enhances regenerated leather
Kishke feel, improve component compatibility, improve the evenness of product, and give the pliability of regenerated leather with
Kishke feel, makes product have thermal storage and energy accumulation function, improves added value of product.
Accompanying drawing explanation
The present invention is further illustrated the most in conjunction with the embodiments.
Fig. 1 is the section FESEM figure of heat-accumulation temperature-adjustment type regenerated leather in the present invention.
Fig. 2 is that the DSC of heat-accumulation temperature-adjustment type regenerated leather in the present invention measures curve.
Detailed description of the invention
A kind of heat-accumulation temperature-adjustment type regenerated leather, including the composite sheet sheet material layers set gradually from top to bottom, non-woven fabrics
Layer and composite sheet sheet material layers；
Described composite sheet sheet material layers includes each component of following parts by weight: shavings fiber 6 parts, the poly-ammonia of aqueous
Ester emulsion 6-18 part, accumulation of heat microcapsule 0.75-1.5 part and water 0-6 weight portion.Described aqueous polyurethane
Content preferred 6-15 part of emulsion；The mass percent of described aqueous polyurethane emulsion is 20-35%.Institute
State nonwoven layer dipping aqueous polyurethane emulsion, the composite sheet sheet material layers of the composite sheet sheet material layers on upper strata Yu lower floor
Fitting together, after secondary hot pressing, three layers can firmly be bonded together, and discover nothing from being difficult in appearance
Spin cloth.
Embodiment 1
The preparation method of described heat-accumulation temperature-adjustment type regenerated leather, comprises the following steps:
(1) the shaving chrome shavinge of leather industry is gathered, it is not necessary to discongest, take shavings fiber 6 weight portion,
(aqueous polyurethane emulsion is in advance with at the thickening agent thickening of 0.01 weight portion with aqueous polyurethane emulsion again
Reason) 15 weight portions, accumulation of heat microcapsule 1.5 weight portion mixing, stir, obtain mixed material；Institute
The mass percent stating aqueous polyurethane emulsion is 30.5%.
(2) by described mixed material, it is laid in steel die, uses hot press to carry out two step segmentations
Compressing, obtain composite sheet；Wherein, compressing parameters is as follows:
The first step: pressure is 12MPa, temperature is 80 DEG C, and the time is 1min；
Second step: pressure is 12MPa, temperature is 100 DEG C, and the time is 3min；
(3) described composite sheet is peeled off from mould taking-up, non-woven fabrics be impregnated in aqueous polyurethane
Emulsion 1.5min, then the upper and lower surface at described non-woven fabrics is fitted a piece of described composite sheet respectively, weight
Newly put in steel die, use hot press to carry out hot-forming, obtain product；Wherein, hot-forming
Parameters as follows: pressure is 10MPa, and temperature is 80 DEG C, and the time is 4min.
Embodiment 2
This part difference from Example 1 is:
(1) taking shavings fiber 6 weight portion, 4.5 weight portions that add water carry out moistening, then ammonia poly-with aqueous
Ester emulsion (aqueous polyurethane emulsion processes with the thickening agent thickening of 0.02 weight portion in advance) 9 weight portions,
Accumulation of heat microcapsule 0.8 weight portion mixes, and stirs, obtains mixed material；Described aqueous polyurethane breast
The mass percent of liquid is 30.0%.
(2) compressing parameters is as follows:
The first step: pressure is 20MPa, temperature is 90 DEG C, and the time is 2min；
Second step: pressure is 20MPa, temperature is 110 DEG C, and the time is 3min；
(3) hot-forming parameters is as follows: pressure is 6MPa, and temperature is 110 DEG C, and the time is
1min。
Embodiment 3
This part difference from Example 1 is:
(1) taking shavings fiber 6 weight portion, 6 weight portions that add water carry out moistening, then with aqueous polyurethane
Emulsion (aqueous polyurethane emulsion processes with the thickening agent thickening of 0.015 weight portion in advance) 6 weight portions,
Accumulation of heat microcapsule 1.3 weight portion mixes, and stirs, obtains mixed material；Described aqueous polyurethane breast
The mass percent of liquid is 33.0%.
(2) compressing parameters is as follows:
The first step: pressure is 7MPa, temperature is 90 DEG C, and the time is 1.5min；
Second step: pressure is 7MPa, temperature is 105 DEG C, and the time is 2min；
(3) hot-forming parameters is as follows: pressure is 12MPa, and temperature is 100 DEG C, the time
For 2min.
Embodiment 4
This part difference from Example 1 is:
(1) taking shavings fiber 6 weight portion, 3 weight portions that add water carry out moistening, then with aqueous polyurethane
Emulsion (aqueous polyurethane emulsion processes with the thickening agent thickening of 0.02 weight portion in advance) 10 weight portions,
Accumulation of heat microcapsule 0.75 weight portion mixes, and stirs, obtains mixed material；Described aqueous polyurethane
The mass percent of emulsion is 28.0%.
(2) compressing parameters is as follows:
The first step: pressure is 15MPa, temperature is 90 DEG C, and the time is 1min；
Second step: pressure is 15MPa, temperature is 100 DEG C, and the time is 2.5min；
(3) hot-forming parameters is as follows: pressure is 16MPa, and temperature is 90 DEG C, and the time is
3min。
Embodiment 5
This part difference from Example 1 is:
(1) taking shavings fiber 6 weight portion, 5 weight portions that add water carry out moistening, then with aqueous polyurethane
Emulsion (aqueous polyurethane emulsion processes with the thickening agent thickening of 0.05 weight portion in advance) 12 weight portions,
Accumulation of heat microcapsule 1 weight portion mixes, and stirs, obtains mixed material；Described aqueous polyurethane emulsion
Mass percent be 20.0%.
(2) compressing parameters is as follows:
The first step: pressure is 6MPa, temperature is 90 DEG C, and the time is 1min；
Second step: pressure is 6MPa, temperature is 110 DEG C, and the time is 2min；
(3) hot-forming parameters is as follows: pressure is 20MPa, and temperature is 90 DEG C, and the time is
5min。
Embodiment 6
This part difference from Example 1 is:
Aqueous polyurethane emulsion is 18 weight portions.
Referring to Fig. 1 and Fig. 2, the heat-accumulation temperature-adjustment type regenerated leather that above-described embodiment prepares uses Flied emission to sweep
Retouch Electronic Speculum (FESEM), to observe regenerated leather section, can clearly tell leather fiber and ball from Fig. 1
Shape microcapsule.Fig. 2 is that the means of differential scanning calorimetry (DSC) of heat-accumulation temperature-adjustment type regenerated leather measures curve, figure
Mark 1 curve in 2 is the heat-accumulation temperature-adjustment type regenerated leather in the present invention, identify 2 curves be existing not
Containing the regenerated leather of microcapsule, from mark 1 curve of Fig. 2 it will be seen that at microcapsule seen from 34.4 DEG C
Phase transformation peak, this makes when temperature is higher than 34.4 DEG C, micro-in the heat-accumulation temperature-adjustment type regenerated leather of the present invention
Capsule absorbs heat, and makes regenerated leather and ambient temperature decline；When temperature is less than 34.4 DEG C, the present invention's
Microcapsule heat release in regenerated leather, makes regenerated leather and ambient temperature improve, and this characteristic can make temperature steady
Surely maintain in the scope that human body sensory is comfortable, play the effect of heat-accumulation temperature-adjustment.
The present invention uses low-temperature dry hot-forming, can save energy, prevent collagen fibril denaturing with retain
The natural characteristic of leather fiber, technique is simple, and the equipment of needs is few；Use the aqueous polyurethane emulsion of environmental protection,
Produce without waste water and gas, environmental friendliness；Use the polyurethane close with corium character to be combined, make product
The pliability of product and feel are closer to corium；Water-based emulsion rather than solid fabric is used to enter with shavings fiber
Row composite molding, can interface compatibility between enhancement component, strengthen the interaction between macromole, change
Kind product evenness；Add heat-accumulation temperature-adjustment microcapsule, give product heat-accumulation temperature-adjustment function, improve product and add
Value.Present invention reduces energy consumption, it is to avoid leather fiber is destroyed, and enhances the kishke feel of regenerated leather, changes
It is apt to component compatibility, has improved the evenness of product, and give product New function；I.e. give the soft of regenerated leather
Softness and kishke feel, and make product have thermal storage and energy accumulation function.
Although the foregoing describing the detailed description of the invention of the present invention, but it is familiar with the technology people of the art
Member should be appreciated that our described specific embodiment is merely exemplary rather than for this
The restriction of bright scope, those of ordinary skill in the art are in the equivalence made according to the spirit of the present invention
Modify and change, all should contain in the scope of the claimed protection of the present invention.
Claims (5)
1. a heat-accumulation temperature-adjustment type regenerated leather, it is characterised in that: include that set gradually from top to bottom answers
Close sheet layer, nonwoven layer and composite sheet sheet material layers；
Described composite sheet sheet material layers includes each component of following parts by weight: shavings fiber 6 parts, the poly-ammonia of aqueous
Ester emulsion 6-18 part, accumulation of heat microcapsule 0.75-1.5 part and water 0-6 weight portion.
2. heat-accumulation temperature-adjustment type regenerated leather as claimed in claim 1, it is characterised in that: described aqueous is gathered
The mass percent of urethane emulsion is 20-35%.
3. a preparation method for heat-accumulation temperature-adjustment type regenerated leather as claimed in claim 1, its feature exists
In: comprise the following steps:
(1) taking shavings fiber 6 weight portion, the 0-6 weight portion that adds water carries out moistening, then ammonia poly-with aqueous
Ester emulsion 6-18 weight portion, accumulation of heat microcapsule 0.75-1.5 weight portion mix, and stir, are mixed
Compound material；
(2) by described mixed material, it is laid in steel die, uses hot press to carry out two step segmentations
Compressing, obtain composite sheet；Wherein, compressing parameters is as follows:
The first step: pressure is 6-20MPa, temperature is 80 DEG C-90 DEG C, and the time is 1-2min；
Second step: pressure is 6-20MPa, temperature is 90 DEG C-110 DEG C, and the time is 2-3min；
(3) described composite sheet is peeled off from mould taking-up, non-woven fabrics be impregnated in aqueous polyurethane
Emulsion 1-2min, then the upper and lower surface at described non-woven fabrics is fitted a piece of described composite sheet respectively,
It is reentered in steel die, uses hot press to carry out hot-forming, obtain product；Wherein, it is hot pressed into
The parameters of type is as follows: pressure is 6-20MPa, and temperature is 80 DEG C-110 DEG C, and the time is 1-5min.
4. the preparation method of heat-accumulation temperature-adjustment type regenerated leather as claimed in claim 3, it is characterised in that:
The mass percent of described aqueous polyurethane emulsion is 20-35%.
5. the preparation method of heat-accumulation temperature-adjustment type regenerated leather as claimed in claim 3, it is characterised in that:
In described step (1), aqueous polyurethane emulsion is used at the thickening agent thickening of 0.01-0.05 weight portion in advance
Mix with other material again after reason.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610186080.3A CN105835494B (en) | 2016-03-29 | 2016-03-29 | Heat-accumulation temperature-adjustment type regenerated leather and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610186080.3A CN105835494B (en) | 2016-03-29 | 2016-03-29 | Heat-accumulation temperature-adjustment type regenerated leather and preparation method thereof |
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| Publication Number | Publication Date |
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| CN105835494A true CN105835494A (en) | 2016-08-10 |
| CN105835494B CN105835494B (en) | 2018-01-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3505169A (en) * | 1966-12-05 | 1970-04-07 | Wyandotte Chemicals Corp | Reconstituted leather and method for producing it |
| JPS5721575A (en) * | 1980-07-14 | 1982-02-04 | Hattori Hideo | Production of reclaimed leather |
| US5958554A (en) * | 1996-06-05 | 1999-09-28 | Mat, Inc. | Reconstituted leather product and process |
| CN1888303A (en) * | 2006-06-09 | 2007-01-03 | 华南理工大学 | Method for producing textile cloth and packaging material containing micro-capsule phase change material |
| CN102182072A (en) * | 2011-04-08 | 2011-09-14 | 中国皮革和制鞋工业研究院 | Regenerated dermal fiber leather and preparation method thereof |
| CN103290701A (en) * | 2013-04-15 | 2013-09-11 | 中国皮革和制鞋工业研究院 | Clean production process for polyurethane synthetic leather base with ultramicro leather powder as filling material |
-
2016
- 2016-03-29 CN CN201610186080.3A patent/CN105835494B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3505169A (en) * | 1966-12-05 | 1970-04-07 | Wyandotte Chemicals Corp | Reconstituted leather and method for producing it |
| JPS5721575A (en) * | 1980-07-14 | 1982-02-04 | Hattori Hideo | Production of reclaimed leather |
| US5958554A (en) * | 1996-06-05 | 1999-09-28 | Mat, Inc. | Reconstituted leather product and process |
| CN1888303A (en) * | 2006-06-09 | 2007-01-03 | 华南理工大学 | Method for producing textile cloth and packaging material containing micro-capsule phase change material |
| CN102182072A (en) * | 2011-04-08 | 2011-09-14 | 中国皮革和制鞋工业研究院 | Regenerated dermal fiber leather and preparation method thereof |
| CN103290701A (en) * | 2013-04-15 | 2013-09-11 | 中国皮革和制鞋工业研究院 | Clean production process for polyurethane synthetic leather base with ultramicro leather powder as filling material |
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| Publication number | Publication date |
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| CN105835494B (en) | 2018-01-09 |
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