CN107779526A - A kind of production method of the special seat leather of high ferro train - Google Patents

Abstract

The present invention relates to a kind of production method of the special seat leather of high ferro train, including fleshing, liming, deliming, softening, tanning, shaving, retanning, dyeing, stuffing, drying, fall it is soft, the step such as cover with paint, lacquer, colour wash, etc..The present invention uses special deashing and softening step, while abundant degreasing, deliming, appropriateness softening remove interfibrillar substance, adds the reaction of lipase, releases corium product smell and organic substance influence caused by raw hide.Retanning dyeing and fat-liquoring process, which is not only screened, employs some low organic materials distributed, reasonable selection and collocation by fatting agent, makes stuffing uniform, absorbs complete, and it is soft, moist to reach leather body for a long time, effectively improves finished leather related property.Special drying mode is that product increases constancy and appropriate extensibility, elasticity lay the foundation, while because drying temperature is low, moisture content slowly scatters and disappears, and contributes to leather to retain preferable feel and elasticity, while leather leather body is compacted, toughness foot, and resilience is good.

Description

A kind of production method of the special seat leather of high ferro train

Technical field

The invention belongs to new material technology field, more particularly to a kind of producer of the special seat leather of high ferro train Method.

Background technology

The seat Nei Shi Chi Lai more of High Speed Railway Trains is particular about at present, and the seat of corium material has turned into the base in VIP compartments This preparation, people are enjoying the natural comfort brought of corium simultaneously, attractive in appearance, wear-resisting durability to leather seat, resistant to bending Persistence, the smell of corium and organic sporadic（Harmful substance contents）Deng proposing higher requirement, and these products are special Property be by the special technique of manufacturing process and formula determine, the leather industry traditional as one, the process of production is roughly the same, But because process conditions, formula and used in chemical materials difference, and obtain entirely different product style and performance quality.It is this High-speed rail seat it is special corium production generally by salt flood greenhide through fleshing, liming, deliming, softening, tanning, retanning, dyeing, plus Fat, drying, fall the processes such as soft, primary coat, embossing, top coat and be made, production process needs solve following key issue：

1. to reach the cladding attractive in appearance being bonded, product must have appropriate extensibility and softness；

2. the high-speed rail seat used as the public, often lacked maintaining in using, so needing especially strong wear-resisting spy Property, to be subjected to ceaselessly pullling bending unavoidably while because frequency of use is high, during use, therefore need to have preferably resistance to rubbing spy Property；

3. corium product because natural factor influences there is obvious corium smell and organic substance to distribute, and in-car air circulation And it is bad, and user is mostly less accustomed to corium smell, thus for concede passerby really enjoy leather seat luxurious sense and Comfort, it is necessary to reduce the distinctive smell and emission of corium product, embody the ecological security of expensive goods.

The content of the invention

The technical problems to be solved by the invention be a kind of low smell of exploitation, low organic matter distribute, be wear-resisting, resistance to rubbing it is soft The production method of the high-performance corium product of the special interior trim leather-high safety of the good high ferro of soft constancy.

The technical solution adopted for solving the technical problem of the present invention is：A kind of production of the special seat leather of high ferro train Journey, including fleshing, liming, deliming, softening, tanning, shaving, retanning, dyeing, stuffing, drying, fall soft, primary coat, it is middle apply, embossing, The steps such as top coat, it is characterised in that wherein：

The deashing and softening step is followed successively by：In terms of 100 parts of the quality of skin, add 150 parts of water, control 32 degree of temperature, add degreasing 0.2 part of agent, 0.4 part of sodium hydrogensulfite, after 60 minutes reaction time water control do, add 90 parts of water, 30 degree of temperature control, then add Enter no 2.5 parts of ammonia deliming agent, 0.3 part of degreasing agent, the deliming degreasing reaction time is kept for 90 minutes.Add 0.5 part of macerating enzyme, control PH value 9.0,0.4 part of lipase is added after 100 minutes reaction time and is reacted 30 minutes, fully softening removes interfibrillar substance Simultaneously again by original fat in skin by the effect of enzyme, fully decompose and remove, to reduce the smell of corium product and organic Thing.Deashing and softening is controlled water and washed 2 times, 250 parts of water after meeting the requirements, water temperature is controlled at 25 degree or so.

The retanning dyeing and fat-liquoring step is：The good blue skin of shaving or white skin input rotary drum rewetting, using blue skin/white skin as quality 100 parts of meters, 40 DEG C of 200 parts of water are added, rewetting is washed 10 minutes, after draining drains, is added 180 parts of 40 DEG C of water, is added 1 part of first Sour sodium, 2 parts of sodium acid carbonates, after reaction 50 minutes, add 2 parts it is low distribute fat liquoring complex agent K800, pH value control is left 6.2 The right side, react 1 hour, draining drains, and adds 150 parts of 40 DEG C of water and washes 15 minutes, draining added after draining 150 parts of 35 DEG C of water and 3 parts of polymer Soft HF, react 30 minutes, add 5 parts of retanning agent BasyntanUR without aldehyde and phenol, 5 parts of Mimosa chaste trees Bark tannin extract, 2 parts of Tara vegetable extracts, 1.5 parts of dispersants, 2.5 parts of dyestuff Disperse Levelers OF, 5 parts of dyestuff Dyestuff, lead to Cross rotary drum mechanism and rotate dyeing 60 minutes, add 1 part of fire retardant filling and absorb 30 minutes, add 150 parts of 45 DEG C of hot water Rotate 20 minutes, add 4 parts of Lipsol EWK fatting agents and 4 parts of ultralow Liquor A1 fatting agents distributed, 0.5 part of EF surface Grease, react 60 minutes.Add 2.5 parts of formic acid in rotary drum in three times again, after adding 10 minutes for the first time plus for the second time, after Add, reacted 20 minutes after adding, draining drains for the third time after 10 minutes；Washed 10 minutes with 200 parts of 45 DEG C of water, draining drip It is dry, 200 parts of 40 DEG C of water, 1 part of aldehydes catabolic enzyme RN, 2 parts of osmo-regulators ML are added, the mechanism rotated using rotary drum is added Strong to absorb and remove the dense skin taste of corium, the time is 45 minutes, then 1 part of formic acid is added in rotary drum, is averagely added in three times, Interval 10 minutes, last time are reacted 30 minutes after adding formic acid, and it is 3.5 ~ 3.7 to adjust and keep pH value, goes out drum；

The drying steps are：Vacuum drying+low temperature, which is hung, to dry in the air+is dried in vacuo, vacuum drying temperature is 52 DEG C, time 120S, low Temperature hangs temperature of drying in the air as 35-38 DEG C, and drying time is about 3 hours, and vacuum drying time is 55 DEG C, time 100S again, final true Water content control enters at 12% ~ 14% in skin falls soft step, is control targe according to required softness；

The covering with paint step is followed successively by primary coat, middle painting, embossing and top coat, and subbing, BMidcoat and top layer is respectively adopted and applies Material, each group is divided into the subbing in parts by mass：150 parts of aqueous pigment cream, filler FCG50 parts are covered, 50 parts of water, are hidden Lid agent LT30 parts, bottom solid DN40 parts, delustering agent DM20 parts, softening agent GROUND BG8 parts, middle soft urethane resin SUSI TF120 parts, 70 parts of acrylic resin SB-300；Each group is divided into the BMidcoat in parts by mass：Aqueous pigment cream 150 parts, 200 parts of water, filler FCG130 parts are covered, middle soft urethane resin PR100 parts, embossing resin PE120 parts is helped, disappears 50 parts of photo etching EC, middle soft urethane resin PR120 parts, middle rigid polyurethane resin M ELIO 03-F125 parts, hand feeling agent WN20 parts； The embossing, i.e., under selected colored roller, temperature 110-130 degree is controlled, embossing speed is that the speed control of conveyer belt and woollen blanket exists 5-6 ms/min, knurling rolls Stress control is in 130-150Bar, it is ensured that embossing fixed effect meets standard specimen requirement；The top coat paint Each group is divided into parts by mass：20 parts of aqueous pigment cream, 150 parts of water, middle soft urethane resin PR30 parts, middle rigid polyurethane resin MELIO 03-F150 parts, delustring resin LV180 parts, delustring resin HS220 parts, delustring finishing agent DM120 parts, physical property auxiliary agent SR50 parts, hand feeling agent WN60 parts, 80 parts of IW-80A of crosslinking agent.

The present invention uses special deashing and softening step, while abundant degreasing, deliming, appropriateness softening remove interfibrillar substance, The reaction of lipase is added, the specific function by de- clean fat in skin by lipase, fully decomposition again removes, So as to release corium product smell and organic substance influence caused by raw hide.Retanning dyeing and fat-liquoring process, which is not only screened, employs one A little low organic materials distributed, reasonable selection and collocation by fatting agent, make stuffing uniform, absorb completely, reach for a long time It is soft, moist to remove from office body, effectively improves finished leather related property, such as fast light, heat-resisting, fire-retardant, washable and physical strength, also specifically for subtracting Light corium smell and selected osmo-regulators, less lovely smell is controlled by and be adjusted to generally receive or Welcome smell, the use of aldehydes catabolic enzyme, to the low molecule organic matter fast decoupled to dissociate in leather（Complete within one week）, The organic substance emitting of free property in leather is removed before leather handbag seat substantially, it is ensured that in train carriage air quality not by Influence.Special drying mode vacuum drying+low temperature, which is hung, to dry in the air+is dried in vacuo, for product increase constancy and appropriate extensibility, Elasticity lays the foundation, and the loss of grease caused by avoiding high temperature and rapid drying or other retanning materials, is effectively retained inside leather Brother chemicals filler, while because drying temperature is low, moisture content slowly scatters and disappears, and contributes to leather to retain preferable feel and bullet Property, while leather leather body is compacted, toughness is sufficient, and resilience is good.

The infiltration binding strength of the wear-resisting of coating, rub resistance and coating and skin base layer, the film forming characteristics of coating, molecular resin The factors such as crosslinking degree are directly related, bottom cover with paint, lacquer, colour wash, etc. and apply interlayer permeability it is better, crosslinking degree is higher, coating film forming more Well, top coat is more soft and smooth, molecule interchain network structure is more perfect, and wear-resisting, anti-rubbing, durability are better, and comfortableness is also higher. The present invention is preferred by the proportioning to each coating, improves the permeability and film forming of coating, adds crosslinking degree, strengthens Molecule interchain extensibility, is effectively improved colour fastness to rubbing, wearability of coating etc. on the premise of flexibility is ensured Practical performance；Especially use without organic solvent, without harmful substance, ultralow organic matter and dissipated in coating material screening The material of hair and low smell, so such leather has preferable ecosystem characterization, low VOC and low odor property.

The key technical indexes test result of the special seat leather of the high ferro train of table 1

Claims (4)

1. a kind of production method of the special seat leather of high ferro train, including fleshing, liming, deliming, softening, tanning, shaving, Retanning, dyeing, stuffing, drying, fall the steps such as soft, primary coat, middle painting, embossing, top coat, it is characterised in that wherein：The deliming is soft Change step to be followed successively by：In terms of 100 parts of the quality of skin, add 150 parts of water, control 32 degree of temperature, add 0.2 part of degreasing agent, sulfurous acid 0.4 part of hydrogen sodium, after 60 minutes reaction time water control do, add 90 parts of water, 30 degree of temperature control, add no ammonia deliming agent 2.5 parts, 0.3 part of degreasing agent, the deliming degreasing reaction time is kept for 90 minutes, adds 0.5 part of macerating enzyme, controls pH value 9.0, instead 0.4 part of lipase is added between seasonable after 100 minutes to react 30 minutes, again by skin while fully softening removes interfibrillar substance In original fat by the effect of enzyme, fully decompose and remove, to reduce the smell of corium product and organic matter, deashing and softening symbol Close and water is controlled after requiring and is washed 2 times, 250 parts of water, water temperature is controlled at 25 degree or so.

2. the production method of the special seat leather of a kind of high ferro train according to claim 1, it is characterised in that described Retanning dyeing and fat-liquoring step is：The good blue skin of shaving or white skin input rotary drum rewetting, counted for 100 parts as quality using blue skin/white skin, 40 DEG C of 200 parts of water are added, rewetting is washed 10 minutes, after draining drains, adds 180 parts of 40 DEG C of water, adds 1 part of sodium formate, 2 parts Sodium acid carbonate, after reaction 50 minutes, add 2 parts it is low distribute fat liquoring complex agent K800, pH value control is 6.2 or so, reaction 1 Hour, draining drains, and adds 150 parts of 40 DEG C of water and washes 15 minutes, and draining adds 150 parts of 35 DEG C of water and 3 parts of polymerizations after draining Thing Soft HF, react 30 minutes, add 5 parts of retanning agent BasyntanUR without aldehyde and phenol, 5 parts of Mimosa wattle skin evergreen chinquapins Glue, 2 parts of Tara vegetable extracts, 1.5 parts of dispersants, 2.5 parts of dyestuff Disperse Leveler OF, 5 parts of dyestuff Dyestuff, pass through rotary drum Mechanism rotates dyeing 60 minutes, adds 1 part of fire retardant filling and absorbs 30 minutes, adds 150 parts of 45 DEG C of hot water and rotate 20 Minute, 4 parts of Lipsol EWK fatting agents of addition and 4 parts of ultralow Liquor A1 fatting agents distributed, 0.5 part of EF surface grease, Reaction 60 minutes, then 2.5 parts of formic acid are added in rotary drum in three times, add after adding 10 minutes for the first time second, after 10 points Add, reacted 20 minutes after adding, draining drains for the third time after clock；To be washed 10 minutes with 200 parts of 45 DEG C of water, draining drains, then 200 parts of 40 DEG C of water, 1 part of aldehydes catabolic enzyme RN, 2 parts of osmo-regulators ML are added, the mechanism rotated using rotary drum is strengthened inhaling The dense skin taste of corium is received and removes, the time is 45 minutes, then 1 part of formic acid is added in rotary drum, is averagely added in three times, is spaced 10 minutes, last time was reacted 30 minutes after adding formic acid, and it is 3.5 ~ 3.7 to adjust and keep pH value, goes out drum.

3. the production method of the special seat leather of a kind of high ferro train according to claim 1, it is characterised in that described Drying steps are：Vacuum drying+low temperature, which is hung, to dry in the air+is dried in vacuo, vacuum drying temperature is 52 DEG C, time 120S, and low temperature hangs temperature of drying in the air Spend for 35-38 DEG C, drying time is about 3 hours, and vacuum drying time is 55 DEG C again, time 100S, moisture content in final corium Content control enters at 12% ~ 14% falls soft step, is control targe according to required softness.

4. the production method of the special seat leather of a kind of high ferro train according to claim 1, it is characterised in that described Cover with paint, lacquer, colour wash, etc. step and be followed successively by primary coat, middle painting, embossing and top coat, subbing, BMidcoat and top coat paint, the bottom is respectively adopted Each group is divided into coating in parts by mass：150 parts of aqueous pigment cream, cover filler FCG50 parts, 50 parts of water, covering agent LT30 Part, bottom solid DN40 parts, delustering agent DM20 parts, softening agent GROUND BG8 parts, middle soft urethane resin SUSI TF120 Part, 70 parts of acrylic resin SB-300；Each group is divided into the BMidcoat in parts by mass：150 parts of aqueous pigment cream, water 200 Part, filler FCG130 parts are covered, middle soft urethane resin PR100 parts help embossing resin PE120 parts, 50 parts of delustering agent EC, Middle soft urethane resin PR120 parts, middle rigid polyurethane resin M ELIO 03-F125 parts, hand feeling agent WN20 parts；The embossing, i.e., Under selected colored roller, control temperature 110-130 degree, embossing speed be the speed control of conveyer belt and woollen blanket at 5-6 ms/min, pressure Flower roller pressure control is in 130-150Bar, it is ensured that embossing fixed effect meets standard specimen requirement；The top coat paint is in parts by mass Each group is divided into：20 parts of aqueous pigment cream, 150 parts of water, middle soft urethane resin PR30 parts, middle rigid polyurethane resin M ELIO 03- F150 parts, delustring resin LV180 parts, delustring resin HS220 parts, delustring finishing agent DM120 parts, physical property auxiliary agent SR50 parts, feel Agent WN60 parts, 80 parts of IW-80A of crosslinking agent.