CN103667542A - Production technology of contrast-effect automobile seat cushion leather - Google Patents

Production technology of contrast-effect automobile seat cushion leather Download PDF

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Publication number
CN103667542A
CN103667542A CN201310613205.2A CN201310613205A CN103667542A CN 103667542 A CN103667542 A CN 103667542A CN 201310613205 A CN201310613205 A CN 201310613205A CN 103667542 A CN103667542 A CN 103667542A
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water
agent
hand feeling
drying
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CN103667542B (en
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赵佳
祝妙凤
宋洪斌
宋保国
俞海明
沈忠英
李江东
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Haining Sende Leather Co Ltd
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Abstract

The invention relates to a production technology of contrast-effect automobile seat cushion leather. The protection technology comprises the steps of liming: dissolving Na2S, NaHS and lime into water in a mass ratio of 1:1:2 to form a liming alkali liquor, reacting fur with the liming alkali liquor in a liquor ratio of 100:100 for 6 h, adding the liming alkali liquor step by step to enable the liquor ratio to increase to 100:200, and continuously reacting for 12 h; retanning: for every 100 parts of fur, adding 100 parts of water, 1 part of a pre-fatting agent and 3 parts of a chrome tanning agent or a chrome-free tanning agent, reacting at the normal temperature for 1 h, adding 2 parts of sodium formate, reacting at the temperature of 40 DEG C for 1 h, and controlling the pH in a range of 3.6-4.0; and finishing: the finishing comprises the steps of roller coating of a bottom layer, embossing, spraying of a color layer, roller coating of an effect layer and spraying of a top layer. The leather produced through the technology is soft, fine in grain side, full in hand feeling, elastic, safe and environment-friendly and has characteristics of wear resistance, folding endurance, light resistance, color migration resistance and the like; and ornamental and pleasant characteristics of the leather are added due to roller coating of the effect layer, and the rigid and non-flexible appearance of ordinary automobile seat cushion leather is changed.

Description

A kind of production technique of contrast effect automobile cushion leather
Technical field
The invention belongs to tanning industry technical field, particularly relate to a kind of production technique of contrast effect automobile cushion leather.
Background technology
Current medium-to-high grade car is all equipped with intradermal dressing leather, leather is made through techniques such as fleshing, deliming, softening, tanning, retanning, dyeing, dry, primary coat, embossing, painted, top paintings by ox-hide conventionally, the following problem of existing automotive trim leather ubiquity:
(1) for meeting interior leather for automobiles, be close to harsh performance and test request, both at home and abroad for automotive trim particularly the leather products of seat cushions seem in appearance that plate is hard always, lack elasticity and soft feel(ing), lost leather as the due natural characteristic of natural product;
(2) dull coloring, lacks aesthetic property.
For promoting interior leather for automobiles image, change leather outward appearance, when enjoying high stable interior trim quality, experience joyful and comfortable that higher-grade outward appearance brings, make the interior trim leather of high-grade automobile there is grain full flexible, skin body is evenly soft, the level effect that color tool is beautiful, and JP has been sent out the production technique of contrast effect automobile cushion leather.
Summary of the invention
Main contents of the present invention are to provide a kind of production technique of interior leather for automobiles, by the product of this explained hereafter, can meet the quality index requirement of automobile cushion leather harshness, can embody pleasing, comfortable and beautiful outward appearance again, skin body is soft, grain is careful, good hand feeling is flexible.
The technical scheme that technical solution problem of the present invention is taked is: a kind of production technique of contrast effect automobile cushion leather, comprises group batch, immersion, fleshing, liming, fleshing split, deliming, softening, pickling, tanning, ageing, shaving washing, rewetting, retanning, neutralization, dyeing, stuffing, water squeezing stretching, extension, toggling, vibrates, falls soft, covering with paint and gage warehouse-in step; It is characterized in that:
Described liming step is: with NaHS, replace part Na 2s, and add lime, Na 2s: NaHS: the mass ratio of lime is 1: 1: 2, the total concn 10wt% of take is soluble in water is grey alkali lye; Immersion, fur after fleshing and grey alkali lye are placed in to rotary drum with the liquor ratio of 100: 100, reaction 6h, substep adds ash charge alkali lye and makes liquor ratio be increased to 100: 200 simultaneously, and continues to react about 12h;
Described retanning step is: after shaving washing, rewetting, skin is stayed in rotary drum, in mass parts, every 100 parts of skins add 100 parts of water, 1 part of pre-fatting agent HP and 3 parts of chrome tanning agents or chrome-free tanning agent, under normal temperature, react 1h, add again 2 parts of sodium formiates, at 40 ℃, react 1h, control pH value 3.6 ~ 4.0;
Described covering with paint step is: bottom roller coat, embossing, pigmented layer spraying, effect layer roller coat and top layer spraying process, consist of.
Preferably, wherein:
The coating of described bottom roller coat operation by water-based paint cream, matting agent, tenderizer, in flexible polyurethane resin, middle rigid polyurethane resin, organic silicon hand feeling agent and water form, each components in mass portion meter is respectively: 5 parts, 10 parts of water-based paint cream, 12 parts of matting agents, 16 parts of tenderizers, 40 parts of middle flexible polyurethane resins, 16 parts of middle rigid polyurethane resins, 1 part of organic silicon hand feeling agent and water; After each component is stirred with 120g/m 2glue spread be rolled onto through vibration, fall on the surface after soft step, during roller coat, by adjusting nip rolls gap, control coating uniformity coefficient and glue spread, after roller coat, enter drying tunnel dry, drying temperature is controlled 120 ± 10 ℃, time of drying 3 ~ 5min;
(2) described embossing operation is: select the suitable colored roller of decorative pattern, temperature is controlled at 125 ± 10 ℃, pressure 180 ± 10Pa, embossing speed 5 ~ 6m/min; To guarantee decorative pattern sizing and each position decorative pattern uniformity;
The coating of described pigmented layer spraying process by water-based paint cream, matting agent, tenderizer, in flexible polyurethane resin, middle rigid polyurethane resin, organic silicon hand feeling agent and water form, each component is respectively by mass parts: 36 parts, 15 parts of water-based paint cream, 10 parts of matting agents, 8 parts of tenderizers, 20 parts of middle flexible polyurethane resins, 10 parts of middle rigid polyurethane resins, 1 part of organic silicon hand feeling agent and water; After each component is stirred with 18g/m 2glue spread spray to surface decorative pattern top, after spraying, enter drying tunnel dry, 100 ± 10 ℃ of drying temperatures, time of drying about 3min;
The coating of described effect layer roller coat operation by water-based paint cream, matting agent, tenderizer, in flexible polyurethane resin, middle rigid polyurethane resin, organic silicon hand feeling agent and water form, each components in mass portion meter is respectively: 5 parts, 12 parts of water-based paint cream, 10 parts of matting agents, 11 parts of tenderizers, 43 parts of middle flexible polyurethane resins, 18 parts of middle rigid polyurethane resins, 1 part of organic silicon hand feeling agent and water; After each component is stirred with 1 ~ 5g/m 2amount be rolled onto on surface pigmented layer, similarly, during roller coat, by adjusting nip rolls gap, control coating uniformity coefficient and glue spread, after roller coat, enter drying tunnel dry, 80 ± 10 ℃ of drying temperatures, time of drying 3min;
(5) the coating of described top layer spraying process is comprised of water-based paint cream, hand feeling agent, delustring urethane, light urethane, linking agent and water, and each components in mass portion meter is respectively: 20 parts, 2 parts of water-based paint cream, 6 parts of hand feeling agents, 42 parts of delustring urethane, 20 parts of light urethane, 10 parts of linking agents and water; After each component is stirred with 50g/m 2glue spread spray in surface effect layer, after spraying, enter drying tunnel dry, 100 ~ 120 ℃ of bake out temperatures, stage drying, total drying time 8 ~ 10min.
Preferably, described chrome-free tanning agent is synthetic tanning agent Relugan GM and TARA tannin extract, and described synthetic tanning agent Relugan GM and the consumption of TARA tannin extract are 7: 3 by quality ratio.
Preferably, described water-based paint cream is NEOSAN 2000 or CAR-TONE, described matting agent is SN-C or 4683, described tenderizer is SOFT S-C or SPELL1070, and described hand feeling agent is 2229W or ER, and described linking agent is XL-50 or YK, described middle flexible polyurethane resin is DLV or CTR, described middle rigid polyurethane resin is LB or PE, and described delustring urethane is MATT200 or UD4, and described light urethane is HPV-C or 91UD.
The present invention selects the water base coating and decorating material of advanced environmental protection to be equipped with new and effective linking agent and brightening agent, reasonably covers with paint, lacquer, colour wash, etc. formula and roller coat, spraying coating process, and not only crosslinking reaction is gentle, mild, complete, film forming is fine and closely woven, stable, the effect of being combined with matrix is good, and possesses suitable extensibility and elasticity.The seat cushions that the present invention produces with leather products not only soft, grain is careful, good hand feeling is flexible, has more the advantageous characteristic such as standby wear-resisting, folding, fast light, resistance to colour migration move, and safety and environmental protection characteristic; The roller coat of effect layer has increased the appreciative value of leather and the characteristic of pleasant, changed general automobile cushion leather stiff, lack flexible outward appearance.
Embodiment
Below in conjunction with embodiment, the present invention is described further, but protection scope of the present invention is not limited to this.
Embodiment 1:
The concrete technological process of production is: criticize → immersion → fleshing → liming → fleshing split → deliming of the group → softening → pickling → tanning → ageing → shaving → rewetting → retanning → neutralization → dyeing and fat-liquoring → water squeezing stretching, extension → toggling → soft → covering with paint of vibrating → fall (primary coat → embossing → pigmented layer → effect layer → strong wear-resisting top is coated with) → gage warehouse-in.Wherein:
Liming realizes depilation and loose hide fiber fast for fur after utilizing alkaline matter to make fleshing, removes interfibrillar substance simultaneously.Adopt NaHS to replace part Na 2s, ratio control, at 1: 1, adds 2 times of amount lime, and with total concn, 10wt% is soluble in water, and the liquor ratio of fur and this aqueous solution is 100: 100, the 6h of Multistep feeding reaction simultaneously, liquor ratio is increased to after 100: 200, continues the about 12h of reaction.With NaHS, replace part Na 2s is to reduce the overplumping of rawhide, and Mao Gengyi removes, grain is also thin, and some fibre interstitial is more easily removed, and can prevent because of Na 2the large rawhide superdistension of S consumption and produce gauffer and grain and owe to make detailed inquiries that topic---this kind of depilating method can make fur both open the fertile line of neck line and tripe limit when alkali swelling loses hair or feathers, can avoid again surperficial overinflation or the loss of the cortex of part between the rib and the hip position too many, also can obtain improvement and the area change of quality simultaneously.
Retanning is that after shaving washing, skin stays and in rotary drum, adds 100 parts of water, take 1000kg as 100 parts, be the weight 1000kg of skin, add water 1000kg, adding 1 part of pre-fatting agent HP is 10kg, and 3 parts of chrome tanning agents are 30kg, under normal temperature, react 1h, adding 2 parts of sodium formiates is 20kg again, at 40 ℃, reacts 1h, controls pH value 3.9.And then reach desired skin base performance and color standard by neutralization, dyeing, stuffing.
Covering with paint process comprises five operations such as roller coat priming paint, embossing, pigmented layer spraying, effect layer roller coat, top layer spraying, bottom roll coat enamel according to the mass fraction each component is: 2,000 10 parts of water-based paint cream NEOSAN, 12 parts of matting agent SN-C, 16 parts of tenderizer SOFT S-C, 40 parts of middle flexible polyurethane resin DLV, 16 parts of middle rigid polyurethane resin LB, 1 part of organic silicon hand feeling agent, 5 parts, water, is made into 100kg roller coat priming paint, after each component stirs evenly with 120g/m 2amount be rolled onto surface, by adjusting nip rolls gap, control uniformity coefficient and glue spread; After roller coat, enter drying tunnel dry, drying temperature is controlled 123 ℃, time of drying 4min.During embossing, select the colored roller of lichee line, temperature is controlled at 126 ℃, pressure 182Pa, and embossing speed 5.2m/min, embossing operation must guarantee that decorative pattern is stereotyped, each position decorative pattern uniformity.Pigmented layer coating according to the mass fraction each component is: 2,000 15 parts of water-based paint cream NEOSAN, 10 parts of matting agent SN-C, 8 parts of tenderizer SOFT S-C, 20 parts of middle flexible polyurethane resin DLV, 10 parts of middle rigid polyurethane resin LB, 1 part of organic silicon hand feeling agent, 36 parts, water, be made into 100kg pigmented layer coating, after each component stirs evenly with 18g/m 2amount spray to surface, 102 ℃ of drying temperatures, time of drying about 3min, the target of this pigmented layer is that the color of skin is controlled with standard specimen basically identical.Effect layer adopts roll coating model to implement, each component is according to the mass fraction: 2,000 12 parts of water-based paint cream NEOSAN, 10 parts of matting agent SN-C, 11 parts of tenderizer SOFT S-C, 43 parts of middle flexible polyurethane resin DLV, 18 parts of middle rigid polyurethane resin LB, 1 part of organic silicon hand feeling agent, 5 parts, water, is made into 30kg effect layer roller coat material in this ratio, after each component stirs evenly with 2.3g/m 2amount be rolled onto surface decorative pattern top (determining roller coat amount with required effect layer effect), similarly, during roller coat, by adjusting nip rolls gap, control uniformity coefficient and glue spread, 82 ℃ of drying temperatures, time of drying 3min.Top layer coating according to the mass fraction each component is: 2,000 2 parts of water-based paint cream NEOSAN, 20 parts, water, 6 parts of hand feeling agent 2229W, 42 parts of delustring urethane MATT200,20 parts of light urethane HPV-C, 10 parts of linking agent XL-50, be made into 100kg top coat coating, after each component stirs evenly with 50g/m 2amount spray to surface, bake out temperature 100-120 ℃, stage drying, 100 ℃ of first stage, 112 ℃ of subordinate phase, 118 ℃ of phase IIIs, total drying time 10min.
Except above-mentioned liming, retanning and covering with paint step, other each step is all identical with common process.The contrast effect automobile cushion leather of being made by the present embodiment technique, skin body is soft, grain is careful, good hand feeling is flexible, has more for advantageous characteristic such as wear-resisting, folding, fast light, resistance to colour migration move, film forming is fine and closely woven, stable, the effect of being combined with matrix is good, and possesses suitable extensibility and elasticity.The roller coat of effect layer has increased the appreciative value of leather and the characteristic of pleasant, changed general automobile cushion leather stiff, lack flexible outward appearance.The contrast effect automobile cushion leather of gained is Spot detection after tested, and the key technical indexes result is as follows:
Figure DEST_PATH_197761DEST_PATH_IMAGE002
Embodiment 2:
In the present embodiment, in retanning step, adopt chrome-free tanning agent, this chrome-free tanning agent is: by quality ratio, and synthetic tanning agent Relugan GM: TARA tannin extract is 7: 3.Cover with paint, lacquer, colour wash, etc. in step, water-based paint cream is CAR-TONE, and matting agent is 4683, and tenderizer is or SPELL1070, hand feeling agent is ER, and linking agent is YK, and middle flexible polyurethane resin is CTR, middle rigid polyurethane resin is PE, and delustring urethane is UD4, and light urethane is 91UD.All the other are identical with embodiment 1.
Embodiment 3:
In the present embodiment, covering with paint, lacquer, colour wash, etc. effect layer roller coat Working Procedure Controlling glue spread in step is 4g/m 2.All the other are identical with embodiment 1.

Claims (4)

1. a production technique for contrast effect automobile cushion leather, comprises group batch, immersion, fleshing, liming, fleshing split, deliming, softening, pickling, tanning, ageing, shaving washing, rewetting, retanning, neutralization, dyeing, stuffing, water squeezing stretching, extension, toggling, vibrates, falls soft, covering with paint and gage warehouse-in step; It is characterized in that:
Described liming step is: with NaHS, replace part Na 2s, and add lime, Na 2s: NaHS: the mass ratio of lime is 1: 1: 2, the total concn 10wt% of take is soluble in water is grey alkali lye; Immersion, fur after fleshing and grey alkali lye are placed in to rotary drum with the liquor ratio of 100: 100, reaction 6h, substep adds ash charge alkali lye and makes liquor ratio be increased to 100: 200 simultaneously, and continues to react about 12h;
Described retanning step is: after shaving washing, rewetting, skin is stayed in rotary drum, in mass parts, every 100 parts of skins add 100 parts of water, 1 part of pre-fatting agent HP and 3 parts of chrome tanning agents or chrome-free tanning agent, under normal temperature, react 1h, add again 2 parts of sodium formiates, at 40 ℃, react 1h, control pH value 3.6 ~ 4.0;
Described covering with paint step is: bottom roller coat, embossing, pigmented layer spraying, effect layer roller coat and top layer spraying process, consist of.
2. the production technique of a kind of contrast effect automobile cushion leather according to claim 1, is characterized in that, wherein:
The coating of described bottom roller coat operation by water-based paint cream, matting agent, tenderizer, in flexible polyurethane resin, middle rigid polyurethane resin, organic silicon hand feeling agent and water form, each components in mass portion meter is respectively: 5 parts, 10 parts of water-based paint cream, 12 parts of matting agents, 16 parts of tenderizers, 40 parts of middle flexible polyurethane resins, 16 parts of middle rigid polyurethane resins, 1 part of organic silicon hand feeling agent and water; After each component is stirred with 120g/m 2glue spread be rolled onto through vibration, fall on the surface after soft step, during roller coat, by adjusting nip rolls gap, control coating uniformity coefficient and glue spread, after roller coat, enter drying tunnel dry, drying temperature is controlled 120 ± 10 ℃, time of drying 3 ~ 5min;
(2) described embossing operation is: select the suitable colored roller of decorative pattern, temperature is controlled at 125 ± 10 ℃, pressure 180 ± 10Pa, embossing speed 5 ~ 6m/min; To guarantee decorative pattern sizing and each position decorative pattern uniformity;
The coating of described pigmented layer spraying process by water-based paint cream, matting agent, tenderizer, in flexible polyurethane resin, middle rigid polyurethane resin, organic silicon hand feeling agent and water form, each component is respectively by mass parts: 36 parts, 15 parts of water-based paint cream, 10 parts of matting agents, 8 parts of tenderizers, 20 parts of middle flexible polyurethane resins, 10 parts of middle rigid polyurethane resins, 1 part of organic silicon hand feeling agent and water; After each component is stirred with 18g/m 2glue spread spray to surface decorative pattern top, after spraying, enter drying tunnel dry, 100 ± 10 ℃ of drying temperatures, time of drying about 3min;
The coating of described effect layer roller coat operation by water-based paint cream, matting agent, tenderizer, in flexible polyurethane resin, middle rigid polyurethane resin, organic silicon hand feeling agent and water form, each components in mass portion meter is respectively: 5 parts, 12 parts of water-based paint cream, 10 parts of matting agents, 11 parts of tenderizers, 43 parts of middle flexible polyurethane resins, 18 parts of middle rigid polyurethane resins, 1 part of organic silicon hand feeling agent and water; After each component is stirred with 1 ~ 5g/m 2amount be rolled onto on surface pigmented layer, similarly, during roller coat, by adjusting nip rolls gap, control coating uniformity coefficient and glue spread, after roller coat, enter drying tunnel dry, 80 ± 10 ℃ of drying temperatures, time of drying 3min;
(5) the coating of described top layer spraying process is comprised of water-based paint cream, hand feeling agent, delustring urethane, light urethane, linking agent and water, and each components in mass portion meter is respectively: 20 parts, 2 parts of water-based paint cream, 6 parts of hand feeling agents, 42 parts of delustring urethane, 20 parts of light urethane, 10 parts of linking agents and water; After each component is stirred with 50g/m 2glue spread spray in surface effect layer, after spraying, enter drying tunnel dry, 100 ~ 120 ℃ of bake out temperatures, stage drying, total drying time 8 ~ 10min.
3. the production technique of a kind of contrast effect automobile cushion leather according to claim 1, it is characterized in that, described chrome-free tanning agent is synthetic tanning agent Relugan GM and TARA tannin extract, and described synthetic tanning agent Relugan GM and the consumption of TARA tannin extract are 7: 3 by quality ratio.
4. the production technique of a kind of contrast effect automobile cushion leather according to claim 2, it is characterized in that, described water-based paint cream is NEOSAN 2000 or CAR-TONE, described matting agent is SN-C or 4683, described tenderizer is SOFT S-C or SPELL1070, described hand feeling agent is 2229W or ER, described linking agent is XL-50 or YK, described middle flexible polyurethane resin is DLV or CTR, described middle rigid polyurethane resin is LB or PE, described delustring urethane is MATT200 or UD4, and described light urethane is HPV-C or 91UD.
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Cited By (6)

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CN104846127A (en) * 2015-05-06 2015-08-19 浙江力源皮业有限公司 Leather manufacture and production process thereof
CN106273856A (en) * 2016-08-04 2017-01-04 海宁富邦汽车内饰有限公司 A kind of noise reducing type automobile cushion leather and processing technique thereof
CN109433564A (en) * 2019-01-07 2019-03-08 明新旭腾新材料股份有限公司 A kind of production method of contrast effect automobile interior decoration leather
CN111500796A (en) * 2020-04-30 2020-08-07 柏德皮革(中国)有限公司 Low-TVOC low-odor environment-friendly ecological automobile leather process
CN113481336A (en) * 2021-07-30 2021-10-08 浙江富邦汽车内饰科技有限公司 Low-temperature cow leather for automobile interior decoration and preparation method thereof
CN114317844A (en) * 2022-01-06 2022-04-12 杨帆 Novel leather material process

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Publication number Priority date Publication date Assignee Title
CN104846127A (en) * 2015-05-06 2015-08-19 浙江力源皮业有限公司 Leather manufacture and production process thereof
CN106273856A (en) * 2016-08-04 2017-01-04 海宁富邦汽车内饰有限公司 A kind of noise reducing type automobile cushion leather and processing technique thereof
CN109433564A (en) * 2019-01-07 2019-03-08 明新旭腾新材料股份有限公司 A kind of production method of contrast effect automobile interior decoration leather
CN111500796A (en) * 2020-04-30 2020-08-07 柏德皮革(中国)有限公司 Low-TVOC low-odor environment-friendly ecological automobile leather process
CN111500796B (en) * 2020-04-30 2022-02-22 柏德皮革(中国)有限公司 Low-TVOC low-odor environment-friendly ecological automobile leather process
CN113481336A (en) * 2021-07-30 2021-10-08 浙江富邦汽车内饰科技有限公司 Low-temperature cow leather for automobile interior decoration and preparation method thereof
CN114317844A (en) * 2022-01-06 2022-04-12 杨帆 Novel leather material process

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Denomination of invention: A Production Process for Bicolor Effect Automotive Cushion Leather

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