CN106222326A - A kind of de-ash process removing from office skin - Google Patents
A kind of de-ash process removing from office skin Download PDFInfo
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- CN106222326A CN106222326A CN201610765369.0A CN201610765369A CN106222326A CN 106222326 A CN106222326 A CN 106222326A CN 201610765369 A CN201610765369 A CN 201610765369A CN 106222326 A CN106222326 A CN 106222326A
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- deliming
- ammonia
- agent
- immersion
- leather
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention provides a kind of de-ash process removing from office skin, comprise the following steps, first by after the leather skin of pre-treatment carries out liming process, obtain molding graywall；Then, after molding graywall above-mentioned steps obtained carries out deliming under the effect without ammonia deliming agent, carbon dioxide and water, the leather skin after deliming is obtained.The de-ash process of the leather skin that the present invention provides will combine without ammonia deliming and carbon dioxide deliming, fully combine without ammonia deliming and the advantage of carbon dioxide deliming, fast and for different parts deliming the speed difference of deliming speed is little, the advantage of ammonia, ammonium salt will not be produced during additionally there is deliming, and to the cleaner advantage of the process on deliming hide surface, have concurrently efficiently and environmental protection.
Description
Technical field
The invention belongs to leather processing technical field, particularly relate to a kind of de-ash process removing from office skin.
Background technology
Scape technology
The process of leather has had the history of thousand of years, through development for a long time, process hides from the most original simply
Manual operations, develop into an important industrial technical field.From early 1980s, the leather industry of China is dashed forward
Fly the development pushed ahead vigorously, the most become one of the most most important leather and the leather goods production center.The Corii Bovis seu Bubali of China, pig
The resource such as skin, Corii Caprae seu Ovis ranks first in the world, and annual light leather yield ranks first in the world, and accounts for more than the 20% of world's total amount, and makes
Leather industry the most constantly becomes the distinctive industry of China, plays the most important effect in national economy.
Along with leather pattern and application are widened further, existing leather not only includes that surface is a kind of special grain
Surface layer, i.e. plate face, it has natural graining and gloss, the feature of comfortable feel, and its untreated raw hide (pelt) is referred to as leather
Skin, also includes leather and fur or double-face leather, refers to that the animal skins of band hair one obtained by tanning, dyeing and finishing wears the leather of hair, its
Untreated raw hide is also referred to as fur.Fur is to be made up of fleece and dermatotome two parts, and wherein fleece refers to animal wool
Face, dermatotome is then the surface with natural graining and gloss.
Leather processes and refers to be easy to the rawhide addled, i.e. raw hide after series of processes is processed, and rawhide just becomes
Become the process of leather that is soft and that do not addle.Generally by raw hide to making finished leather, it is broadly divided into three phases, the preparatory stage,
Tanning stage and fin-ishing stages, mainly contain immersion, fleshing, depilation, liming, defat, softening, pickling, tanning and follow-up
--(fleshing)----immersion--(fleshing)--weigh--main immersion--in advance of weighing that fin-ishing stages, specifically has and can be subdivided into batching
(defat)----(fleshing) and/or split are weighed, and (multiple ash)------(washing one's face)--pickling--is pre-in softening for deliming for depilation, liming
Tan--the steps such as main tanning and retanning.
Among these, deliming is a step important during leather skin processes, and leather skin deliming is that the pelt of liming is removed alkalescence material
Material, eliminates pelt and expands, provides appropriate PH condition, the operating process of favourable subsequent handling for enzyme bating, mainly to remove
The pelt swelling state of liming, lowers the pH value of pelt, eliminates the swelling state of pelt, provides suitable behaviour for subsequent handling
Make condition；Remove sulfide, alkali, fat soap compound and the collagen degradation thing in pelt simultaneously；Purify collagen fiber structure, favorably
Infiltration in tanning material etc..
Along with the further raising of environmental requirement in recent years, and carry further what ammonia nitrogen detection limit in discharge water required
Height, conventional ammonium salt deliming, owing to producing substantial amounts of ammonia and forming a large amount of ammonium salt in body lotion, causes water body ammonia nitrogen to surpass
Mark, cannot meet the environmental requirement of modern production process.And the deliming mode of other environmental protection, as the most basic in carbon dioxide deliming
Rest on the experimental stage of scientific research institutions, really put in production process the most beyond example, this is mainly due to titanium dioxide
Equipment is not only had high requirement, financial strength and relevant auxiliary facility to enterprise to require the highest by carbon deliming,
But corresponding study on the industrialization is fewer, it is impossible to generally implement, and it is long to there is also the deliming time in actual application, and exists
The inherent shortcoming that deliming rear portion potential difference is big, it is difficult to actual application widely.
But environmental protection pressure is increasing, the following emission request to waste gas, waste water also can be increasingly stricter, so
Production process is formulated the deliming technical scheme of more environmental protection, for following industry, enterprise development it is critical that, be also
One of line PRODUCTION TRAITS personnel's problem demanding prompt solution of leather treatment industry.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of de-ash process removing from office skin, and the present invention provides
The de-ash process of leather skin, will combine without ammonia deliming and carbon dioxide deliming, production process environment-friendly and green, but also effectively
Overcome the poor big problem of time length and position that carbon dioxide deliming exists.
The invention provides a kind of de-ash process removing from office skin, comprise the following steps:
A) by after the leather skin of pre-treatment carries out liming process, molding graywall is obtained；
B) molding graywall above-mentioned steps obtained carries out deliming under the effect without ammonia deliming agent, carbon dioxide and water
After, obtain the leather skin after deliming.
Preferably, the quality of described deliming agent without ammonia accounts for the 0.6%～1.0% of described leather cortex amount；
The air inflow of described carbon dioxide is 6～8.5L/min；
The quality of described water accounts for the 120%～180% of described leather cortex amount；
The time of described deliming is 150～180min.
Preferably, during described deliming agent without ammonia includes Acidic organic matter, mineral acid, Acidic inorganic salts and organic fermented product
One or more；
Described Acidic organic matter includes one or more in lactic acid, formic acid and acetic acid；
Described mineral acid includes sulphuric acid and/or hydrochloric acid.
Preferably, described deliming agent without ammonia includes without ammonia deliming agent ASB, without ammonia deliming agent DEKALON CL, without ammonia deliming
Agent SEACOPOLDL830 and without one or more in ammonia deliming agent TRUPOCALPN；
Described leather skin includes one or more in Corii Bovis seu Bubali, Corii Caprae seu Ovis, Corii Sus domestica, donkey skin and Corium Equi.
Preferably, described deliming includes pre-deliming and main deliming；
Described pre-deliming is carried out under the effect without ammonia deliming agent and water；
Described main deliming is carried out under the effect without ammonia deliming agent, carbon dioxide and water.
Preferably, described step B) particularly as follows:
B1) the molding graywall that above-mentioned steps obtained, put into without ammonia deliming agent and water rotary drum or paddle-tumble rotate carry out pre-
After deliming, part discharge opeing；
B2) then again add without ammonia deliming agent in rotary drum or paddle-tumble, rotate, then be passed through carbon dioxide, be rotated further
After carrying out main deliming, obtain the leather skin after deliming.
Preferably, described step B1) in, the quality of described deliming agent without ammonia account for described leather cortex amount 0.2%～
0.4%；
The time of described rotation is 10～30 minutes；
The ratio of described part discharge opeing is 60%～80%；
Described step B2) in, described again add without the quality of ammonia deliming agent account for described leather cortex amount 0.4%～
0.6%；
The time of described rotation is 10～30 minutes.
Preferably, described step B1) in, also include Calx suspending agent；
The quality of described Calx suspending agent accounts for the 0.1%～0.3% of described leather cortex amount.
Preferably, described pre-treatment includes that lower limb, pre-immersion, pre-fleshing and main immersion are cut in fur sorting, fur successively；
Described liming processes and includes liming, lime-fleshing, graywall deburring and graywall split successively.
Preferably, the concretely comprising the following steps of described pre-immersion:
Pending semi-finished product, immersion agent, dispersant, Quadrafos, antibacterial and water are put in rotary drum or paddle-tumble,
Have a rest rotation；
The time of described pre-immersion is 4～6 hours；
Concretely comprising the following steps of described main immersion:
By semi-finished product, immersion agent, dispersant, Quadrafos, soaking enzyme, lipase, antibacterial, magnesium oxide compounds and
Water is put in rotary drum or paddle-tumble, intermittent rotary；
The time of described main immersion is 15～21 hours.
The invention provides a kind of de-ash process removing from office skin, comprise the following steps, first the leather skin through pre-treatment is entered
After row liming processes, obtain molding graywall；Then molding graywall above-mentioned steps obtained without ammonia deliming agent, carbon dioxide and
After carrying out deliming under the effect of water, obtain the leather skin after deliming.Compared with prior art, the drenchers of the leather skin that the present invention provides
Skill, can produce significant component of ammonium salt for producing in existing de-ash process, cause in substantial amounts of ammonia and body lotion
The problem that water body ammonia nitrogen exceeds standard, will combine without ammonia deliming and carbon dioxide deliming, fully combine without ammonia deliming and titanium dioxide
The advantage of carbon deliming, fast and for different parts deliming the speed difference of deliming speed is little, additionally has during deliming not
Can produce the advantage of ammonia, ammonium salt, and to the cleaner advantage of the process on deliming hide surface, have concurrently efficiently and environmental protection.Real
Test result to show, use the de-ash process removing from office skin that the present invention provides, a large amount of ammonia will not be produced, body lotion does not produce ammonium salt,
The pure carbon dioxide deliming that compares can shorten the process time about 30%, and the position difference of wet blue is less, and in body lotion not
Ammonium salt can be produced.
Detailed description of the invention
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
The all raw materials of the present invention, are not particularly limited its source, that commercially buy or according to people in the art
Prepared by the conventional method known to Yuan.
The all raw materials of the present invention, are not particularly limited its purity, present invention preferably employs analytical pure or leather preparation neck
The conventional purity that territory uses.
The invention provides a kind of de-ash process removing from office skin, comprise the following steps:
A) by after the leather skin of pre-treatment carries out liming process, molding graywall is obtained；
B) molding graywall above-mentioned steps obtained carries out deliming under the effect without ammonia deliming agent, carbon dioxide and water
After, obtain the leather skin after deliming.
The connotation of described leather skin is not particularly limited by the present invention, with the definition of leather skin well known to those skilled in the art is
Can, the definition i.e. carried out relative to fur, leather skin refers to for making the raw material that two sides is all the leather of surface, and fur is
One side is surface, and one side is the general designation of fur.The kind of leather skin is not particularly limited by the present invention, ripe with those skilled in the art
The conventional leather skin kind known, those skilled in the art can be according to practical condition, prescription and hide situation
Selecting and adjust, leather skin of the present invention preferably includes one or more in Corii Bovis seu Bubali, Corii Caprae seu Ovis, Corii Sus domestica, donkey skin and Corium Equi,
More preferably Corii Bovis seu Bubali, Corii Caprae seu Ovis, Corii Sus domestica, donkey skin or Corium Equi, more preferably Corii Bovis seu Bubali, Corii Caprae seu Ovis or Corii Sus domestica, most preferably Corii Bovis seu Bubali.
First the present invention by after the leather skin of pre-treatment carries out liming process, obtains molding graywall.
The technique of described pre-treatment is not particularly limited by the present invention, walks with leather skin liming well known to those skilled in the art
Processing procedure before Zhou, those skilled in the art can be according to practical condition, prescription and hide situation
Select and adjust, pre-treatment of the present invention preferably mainly comprise fur sorting, fur cuts lower limb, pre-immersion, pre-fleshing and
Main immersion, more preferably includes that lower limb, pre-immersion, pre-fleshing and main immersion are cut in fur sorting, fur successively.The present invention is to above-mentioned step
Rapid concrete technology and technological parameter are not particularly limited, and with the processing procedure of above-mentioned technique well known to those skilled in the art are
Can, those skilled in the art can select according to practical condition, prescription and hide situation and adjust.
Wherein, concrete technology and technological parameter that described fur is sorted by the present invention are not particularly limited, with this area skill
The processing procedure of the fur sorting known to art personnel, those skilled in the art can want according to practical condition, quality
Ask and hide situation select and adjusts, fur of the present invention sorting concrete steps be preferably: according to hair color and
Width size is classified.
Described fur is cut the concrete technology of lower limb by the present invention and technological parameter is not particularly limited, with those skilled in the art
Known to fur cut the processing procedure of lower limb, those skilled in the art can according to practical condition, prescription and
Hide situation selects and adjusts, and fur of the present invention cuts the concrete steps of lower limb and is preferably: raw material is removed from office the tail of skin, milk
The big oil clot that bubble and edge are piled up slices off.
Concrete technology and the technological parameter of described pre-immersion are not particularly limited by the present invention, ripe with those skilled in the art
The processing procedure of the pre-immersion known, those skilled in the art can be according to practical condition, prescription and hide
Situation selects and adjusts, and the concrete steps of pre-immersion of the present invention are preferably:
Pending semi-finished product, immersion agent, dispersant, Quadrafos, antibacterial and water are put in rotary drum or paddle-tumble,
Have a rest rotation.
Pending semi-finished product of the present invention preferably refer to presoak the leather skin before water step.The present invention is to described preimpregnation
The time of water is not particularly limited, with the process time of pre-immersion well known to those skilled in the art, people in the art
Member can select according to practical condition, prescription and hide situation and adjust, pre-immersion of the present invention
Time is preferably 4～6 hours, more preferably 4.5～5.5 hours, is particularly preferred as 5 hours.Mentioned reagent is added by the present invention
Enter amount to be not particularly limited, with the amount of being routinely added to of pre-immersion well known to those skilled in the art, those skilled in the art
Can select according to practical condition, prescription and hide situation and adjust.The present invention is to described intermittent rotary
Concrete frequency be not particularly limited, with pre-immersion process well known to those skilled in the art turn stop combine the frequency,
Those skilled in the art can select according to practical condition, prescription and hide situation and adjust.
The present invention is to improve the treatment effect of integrated artistic, provides good raw material, described preimpregnation for later stage de-ash process
Water step is particularly preferred as:
25 DEG C of water, the liquor ratio (pending leather skin and the mass ratio of water) of 150%, add the immersion agent WS of 0.2%,
The dispersant GC of 0.2%, the Quadrafos SWP 0.3% of little molecule, antibacterial 0.2%, turn 15 minutes/stop 15 minutes, time total
Between 5 hours, it is desirable to return.
Concrete technology and the technological parameter of described pre-fleshing are not particularly limited by the present invention, ripe with those skilled in the art
The processing procedure of the pre-fleshing known, those skilled in the art can be according to practical condition, prescription and hide
Situation selects and adjusts, and the concrete steps of pre-fleshing of the present invention are preferably: require the most each cutter, by some big oil
Block and pork slag remove, in order to the infiltration of later stage material.
Concrete technology and the technological parameter of described main immersion are not particularly limited by the present invention, ripe with those skilled in the art
The processing procedure of the main immersion known, those skilled in the art can be according to practical condition, prescription and hide
Situation selects and adjusts, and the concrete steps of main immersion of the present invention are preferably:
By semi-finished product, immersion agent, dispersant, Quadrafos, soaking enzyme, lipase, antibacterial, magnesium oxide compounds and
Water is put in rotary drum or paddle-tumble, intermittent rotary.
Semi-finished product of the present invention preferably refer to the leather skin before main immersion step.The present invention time to described main immersion
Being not particularly limited, with the process time of main immersion well known to those skilled in the art, those skilled in the art can root
Selecting according to practical condition, prescription and hide situation and adjust, the time of main immersion of the present invention is preferred
It is 15～21 hours, more preferably 16～20 hours, more preferably 17～19 hours, is particularly preferred as 18 hours.The present invention couple
The addition of mentioned reagent is not particularly limited, with the amount of being routinely added to of main immersion well known to those skilled in the art, this
Skilled person can select according to practical condition, prescription and hide situation and adjust.The present invention couple
The concrete frequency of described intermittent rotary is not particularly limited, and stops combining with turning of main immersion process well known to those skilled in the art
The frequency, those skilled in the art can carry out selecting according to practical condition, prescription and hide situation and
Adjust.
The present invention is to improve the treatment effect of integrated artistic, provides good raw material, described main leaching for later stage de-ash process
Water step is particularly preferred as:
The water of 25 DEG C, adds little molecule Quadrafos SWP 0.4%, and soak agent WS 0.5%, dispersant GC 0.2%, leaching
Water enzyme SE-2 0.15% and lipase B ORRON DL 0.1%, adds appropriate antibacterial and magnesium oxide compounds MN/A
0.2%, turn and stop combining, control at 18h total time.
Concrete technology and technological parameter that described liming is processed by the present invention are not particularly limited, with those skilled in the art
Known to liming and the process of post processing and parameter, those skilled in the art can according to practical condition,
Prescription and hide situation select and adjust, and liming of the present invention processes and preferably includes liming, lime-fleshing, ash
Skin deburring and graywall split, include liming, lime-fleshing, graywall deburring and graywall split the most successively.The present invention is to described
The process of liming is not particularly limited, with process and the parameter of liming well known to those skilled in the art, this area
Technical staff can select according to practical condition, prescription and hide situation and adjust, leaching of the present invention
Ash preferably employs Calx and/or skin material is processed by akali sulphide.
The present invention has obtained molding graywall through above-mentioned steps, then molding graywall without ammonia deliming agent, carbon dioxide and
After carrying out deliming under the effect of water, obtain the leather skin after deliming.
The consumption of described deliming agent without ammonia is not particularly limited by the present invention, and those skilled in the art can be raw according to reality
Product situation, prescription and hide situation select and adjust, and the quality of deliming agent without ammonia of the present invention preferably comprises institute
State leather cortex amount 0.6%～1.0%, more preferably 0.7%～0.9%, more preferably 0.75%～0.85%, the most permissible
It is 0.8%.
The specifically chosen of described deliming agent without ammonia is not particularly limited by the present invention, with nothing well known to those skilled in the art
Ammonia deliming agent, those skilled in the art can select according to practical condition, prescription and hide situation
And adjustment, deliming agent without ammonia of the present invention preferably includes in Acidic organic matter, mineral acid, Acidic inorganic salts and organic fermented product
One or more, more preferably Acidic organic matter, mineral acid, Acidic inorganic salts or organic fermented product, most preferably acidity has
Machine thing or mineral acid.Acidic organic matter of the present invention preferably includes one or more in lactic acid, formic acid and acetic acid, more preferably
For lactic acid, formic acid or acetic acid, most preferably formic acid.Mineral acid of the present invention preferably includes sulphuric acid and/or hydrochloric acid, more preferably
Sulphuric acid or hydrochloric acid.The concrete model of described deliming agent without ammonia is not particularly limited by the present invention, knows with those skilled in the art
The model of deliming agent without ammonia, those skilled in the art can be according to practical condition, prescription and hide situation
Selecting and adjust, deliming agent without ammonia of the present invention preferably includes without ammonia deliming agent ASB, without ammonia deliming agent DEKALON
CL, without ammonia deliming agent SEACOPOL DL830 with without one or more in ammonia deliming agent TRUPOCAL PN, more preferably include
The ASB of deliming agent without ammonia, without ammonia deliming agent DEKALON CL, without ammonia deliming agent SEACOPOL DL830 or without ammonia deliming agent
TRUPOCAL PN, most preferably includes without ammonia deliming agent ASB.
The air inflow of described carbon dioxide is not particularly limited by the present invention, and those skilled in the art can be raw according to reality
Product situation, prescription and hide situation select and adjust, the air inflow of carbon dioxide of the present invention be preferably 6～
8.5L/min, more preferably 6.5～8L/min, more preferably 7.0～7.8L/min, it is specifically as follows 7.5L/min.Particularly,
The air inflow of carbon dioxide of the present invention is removed from office the treating capacity of skin and is associated with the present invention, the process of leather skin of the present invention
Amount is preferably 8000kg～10000kg, more preferably 8250kg～9750kg, more preferably 8500kg～9500kg, most preferably
For more preferably 8750kg～9750kg, when the treating capacity removing from office skin changes, the air inflow of described carbon dioxide also should be fitted
When change, those skilled in the art can select according to practical condition, prescription and hide situation
And adjustment.The consumption of described water is not particularly limited by the present invention, and those skilled in the art can be according to practical condition, matter
Amount requires and hide situation selects and adjusts, and the quality of water of the present invention preferably comprises the 120% of described leather cortex amount
～180%, more preferably 130%～170%, more preferably 140%～160%, it is specifically as follows 150%.The present invention is to institute
The concrete time stating deliming is not particularly limited, those skilled in the art can according to practical condition, prescription and
Hide situation selects and adjusts, be preferably the total time of deliming of the present invention 150～180min, more preferably 160～
170min, most preferably 165～175min.
The detailed process of described deliming is not particularly limited by the present invention, and those skilled in the art can be according to actual production
Situation, prescription and hide situation select and adjust, and deliming of the present invention preferably includes pre-deliming and main deliming.
Wherein, described pre-deliming is preferably carried out under the effect without ammonia deliming agent and water.Described main deliming preferably without ammonia deliming agent, two
Carry out under the effect of carbonoxide and water.The present invention is more preferably to improve the effect of deliming, and the detailed process of described deliming is the most preferred
For, the most described step B) it is particularly preferred as:
B1) the molding graywall that above-mentioned steps obtained, put into without ammonia deliming agent and water rotary drum or paddle-tumble rotate carry out pre-
After deliming, part discharge opeing；
B2) then again add without ammonia deliming agent in rotary drum or paddle-tumble, rotate, then be passed through carbon dioxide, be rotated further
After carrying out main deliming, obtain the leather skin after deliming.
Molding graywall that first above-mentioned steps is obtained by the present invention, put in rotary drum or paddle-tumble without ammonia deliming agent and water and rotate
After carrying out pre-deliming, part discharge opeing.
The present invention is to above-mentioned B1) in step, during the most pre-deliming, the consumption of described deliming agent without ammonia limits the most especially
System, those skilled in the art can select according to practical condition, prescription and hide situation and adjust, this
The quality of bright described deliming agent without ammonia preferably comprise described leather cortex amount 0.2%～0.4%, more preferably 0.25%～
0.35%, it is specifically as follows 0.3%.The time of described rotation is not particularly limited by the present invention, and those skilled in the art are permissible
Selecting according to practical condition, prescription and hide situation and adjust, the time of rotation of the present invention is preferred
It is 10～30 minutes, more preferably 15～25 minutes, most preferably 20 minutes.The described concrete ratio of part discharge opeing is not had by the present invention
Have especially restriction, those skilled in the art can carry out selecting according to practical condition, prescription and hide situation and
Adjusting, the ratio of part discharge opeing of the present invention is preferably 60%～80%, more preferably 65%～75%, and most preferably 68%
～78%.
The present invention is to improve the technique effect of pre-deliming process, described step B1) in, the most also include Calx suspending agent,
Will above-mentioned steps obtain molding graywall, without ammonia deliming agent, Calx suspending agent and water put in rotary drum or paddle-tumble rotate carry out
After pre-deliming, part discharge opeing.Specifically chosen and the consumption of described Calx suspending agent is not particularly limited, with this area by the present invention
Specifically chosen and the consumption of the Calx suspending agent known to technical staff, those skilled in the art can be according to actual production feelings
Condition, prescription and hide situation select and adjust, and the quality of Calx suspending agent of the present invention preferably comprises described leather
The 0.1%～0.3% of cortex amount, more preferably 0.15%～0.25%, most preferably 0.18%～0.22%.
The present invention is to improve treatment effect and the treatment effect of de-ash process of integrated artistic, and described pre-deliming steps is concrete
It is preferably:
The water of 30 DEG C of addition 150%, without ammonia deliming agent ASB 0.3%, Calx suspending agent CR-II 0.2%, turns 20 points
Clock, draining, the incomplete emptying of drainage requirement, the water of reserved 30%.
The present invention is to above-mentioned B2) in step, during the most main deliming, the consumption of described deliming agent without ammonia limits the most especially
System, those skilled in the art can select according to practical condition, prescription and hide situation and adjust, this
The quality of bright described deliming agent without ammonia preferably comprise described leather cortex amount 0.4%～0.6%, more preferably 0.45%～
0.55%, it is specifically as follows 0.5%.The time of described rotation is not particularly limited by the present invention, and those skilled in the art are permissible
Selecting according to practical condition, prescription and hide situation and adjust, the time of rotation of the present invention is preferred
It is 10～30 minutes, more preferably 15～25 minutes, most preferably 20 minutes.
The present invention is to improve treatment effect and the treatment effect of de-ash process of integrated artistic, and described main deliming steps is concrete
It is preferably:
The ASB of addition 0.5% turns 20 minutes, then starts to be passed through carbon dioxide, and air inflow controls at about 7.5L/MIN,
Rotary drum keeps rotating always, and total rotation time of pre-deliming and main deliming controls at 150min～180min, checks otch to point,
Detect with phenolphthalein, it is desirable to buttocks otch is colourless, i.e. reaches prescription.
Above-mentioned steps of the present invention provides a kind of de-ash process removing from office skin, will tie mutually with carbon dioxide deliming without ammonia deliming
Closing, fully combine without ammonia deliming and the advantage of carbon dioxide deliming, first use and carry out pre-deliming without ammonia deliming agent, main deliming is adopted
By the mode combined without ammonia deliming agent and carbon dioxide, the outer circulation that carbon dioxide is delivered to rotary drum or paddle-tumble by pipeline is bathed
In liquid, thus fast and for different parts deliming the speed difference of deliming speed is little, but also will not produce during having deliming
Ammonifying gas, the advantage of ammonium salt, and to the cleaner advantage of the process on deliming hide surface, have concurrently efficiently and environmental protection.Experiment knot
Fruit shows, uses the de-ash process removing from office skin that the present invention provides, will not produce a large amount of ammonia, not produce ammonium salt, compare in body lotion
Relatively pure carbon dioxide deliming can shorten the process time about 30%, and the position difference of wet blue is less, and will not produce in body lotion
Raw ammonium salt.
In order to further illustrate the present invention, a kind of de-ash process removing from office skin provided the present invention below in conjunction with embodiment enters
Row describes in detail, but it is to be understood that these embodiments are to implement under premised on technical solution of the present invention, give
Detailed embodiment and concrete operating process, simply for further illustrating the features and advantages of the present invention rather than to this
The restriction of invention claim, protection scope of the present invention is also not necessarily limited to following embodiment.
Comparative example 1
Integrated artistic flow process:
Fur sorting → fur cuts lower limb → pre-immersion → pre-fleshing → main immersion → liming → lime-fleshing → graywall deburring
→ graywall split → deliming → softening → pickling → tanning → take horse
Fur sorts: mainly classify according to hair color and a width size.
Fur cuts lower limb: sliced off by the big oil clot that Corii Bovis seu Bubali tail, milk foam and edge are piled up.
Pre-immersion:
25 DEG C of water, the liquor ratio of 150%, add the immersion agent WS of 0.2%, the dispersant GC of 0.2%, the polyphosphoric acid of little molecule
Salt SWP0.3%, antibacterial 0.2%, turn 15 minutes/stop 15 minutes, 5 hours total times, it is desirable to return.
Some big oil clots and pork slag are mainly removed, in order to later stage material by pre-fleshing: require the most each cutter
Infiltration.
Main immersion: the water of 25 DEG C, adds little molecule Quadrafos SWP 0.4%, and soak agent WS 0.5%, dispersant GC
0.2%, soaking enzyme SE-2 0.15% and lipase B ORRON DL 0.1%, add appropriate antibacterial and magnesium oxide class
Compound MN/A 0.2%, turns and stops combining, control at 18h total time.
Liming processes: liming, lime-fleshing, graywall deburring, graywall split: conventionally carry out.
Deliming: be first the water of 30 DEG C that add 150%, ammonium sulfate 0.3%, add Calx suspending agent CR-II0.2%,
Turn 20 minutes, draining, the incomplete emptying of drainage requirement, the water of reserved 30%, be initially charged the ammonium sulfate of 0.6% and turn 30 minutes, so
After add 0.6% turn of ammonium sulfate 40 minutes, detect otch with phenolphthalein, check that buttocks leaves a line, then time delay rotates 20min,
Detection buttocks otch is full impregnated, and draining, deliming terminates.
Softening, pickling and tanning: carry out according to conventional technique.
After deliming terminates, the content 78PPM of ammonium salt in deliming body lotion after testing, and open drum door and can smell a kind of dense
The taste of ammonia, it is necessary to need to wear a gas mask；Total deliming time 120min, wet blue take after horse stands one week check,
Finding that the clean level of hide grain is general, especially for some black wool skins, it is not the most thorough that some scurf processes；
Secondly wet blue position difference is relatively big, and indivedual edge feels are the softest, and the degree of packing is general.
Comparative example 2
Integrated artistic flow process:
Fur sorting → fur cuts lower limb → pre-immersion → pre-fleshing → main immersion → liming → lime-fleshing → graywall deburring
→ graywall split → deliming → softening → pickling → tanning → take horse
Fur sorts: mainly classify according to hair color and a width size.
Fur cuts lower limb: sliced off by the big oil clot that Corii Bovis seu Bubali tail, milk foam and edge are piled up.
Pre-immersion:
25 DEG C of water, the liquor ratio of 150%, add the immersion agent WS of 0.2%, the dispersant GC of 0.2%, the polyphosphoric acid of little molecule
Salt SWP0.3%, antibacterial 0.2%, turn 15 minutes/stop 15 minutes, 5 hours total times, it is desirable to return.
Some big oil clots and pork slag are mainly removed, in order to later stage material by pre-fleshing: require the most each cutter
Infiltration.
Main immersion: the water of 25 DEG C, adds little molecule Quadrafos SWP 0.4%, and soak agent WS 0.5%, dispersant GC
0.2%, soaking enzyme SE-2 0.15% and lipase B ORRON DL 0.1%, add appropriate antibacterial and magnesium oxide class
Compound MN/A 0.2%, turns and stops combining, control at 18h total time.
Liming processes: liming, lime-fleshing, graywall deburring, graywall split: conventionally carry out.
Deliming: be first the water of 30 DEG C that add 150%, by stainless steel pipes, carbon dioxide is incorporated into the mistake of rotary drum
In the body lotion of filter tank, air inflow controls, at 5L/min, to turn 90min, then tunes up air inflow to 7.5L/min, rotates continuously
180min, detects buttocks otch with phenolphthalein, and buttocks leaves a line after testing, is rotated further 30min, detects otch full impregnated, deliming
Terminate, draining.
Softening, pickling and tanning: carry out according to conventional technique.
After deliming terminates, first calculating total deliming time is 300min, secondly the content of ammonium salt in detection body lotion, after testing
Find no obvious ammonium salt to produce；It is finally after wet blue stands a week, to find that the clean level of hide grain is preferable, but
The feel being hide entirety is the hardest, and richness is inadequate, but hide entirety position difference is less, edge and the hands at median ridge position
Sense difference is not clearly.
Embodiment 1
Integrated artistic flow process:
Fur sorting → fur cuts lower limb → pre-immersion → pre-fleshing → main immersion → liming → lime-fleshing → graywall deburring
→ graywall split → deliming → softening → pickling → tanning → take horse
Fur sorts: mainly classify according to hair color and a width size.
Fur cuts lower limb: sliced off by the big oil clot that Corii Bovis seu Bubali tail, milk foam and edge are piled up.
Pre-immersion:
25 DEG C of water, the liquor ratio of 150%, add the immersion agent WS of 0.2%, the dispersant GC of 0.2%, the polyphosphoric acid of little molecule
Salt SWP0.3%, antibacterial 0.2%, turn 15 minutes/stop 15 minutes, 5 hours total times, it is desirable to return.
Some big oil clots and pork slag are mainly removed, in order to later stage material by pre-fleshing: require the most each cutter
Infiltration.
Main immersion: the water of 25 DEG C, adds little molecule Quadrafos SWP 0.4%, and soak agent WS 0.5%, dispersant GC
0.2%, soaking enzyme SE-2 0.15% and lipase B ORRON DL 0.1%, add appropriate antibacterial and magnesium oxide class
Compound MN/A 0.2%, turns and stops combining, control at 18h total time.
Liming processes: liming, lime-fleshing, graywall deburring, graywall split: conventionally carry out.
Deliming: be first the water of 30 DEG C that add 150%, without ammonia deliming agent ASB 0.3%, adds Calx suspending agent CR-
II 0.2%, turns 20 minutes, draining, the incomplete emptying of drainage requirement, and the water of reserved 30%, the ASB being initially charged 0.5% turns 20 points
Clock, then starts to be passed through carbon dioxide, and air inflow controls at about 7.5L/MIN, and rotary drum keeps rotating always, total rotation time
Control at 150min～180min, check otch to point, detect with phenolphthalein, it is desirable to buttocks otch is colourless, i.e. reach quality and want
Ask.
Softening, pickling and tanning: carry out according to conventional technique.
After deliming terminates, it is necessary first to the concentration of ammonium salt in body lotion is detected, after testing, containing ammonium salt in body lotion
3ppm, this is the micro constitutent contained in material, is approximately considered not ammonium salt-containing；Next rotates 60 points after starting to be passed through carbon dioxide
Zhong Hou, finds with the otch of phenolphthalein detection hide, and in addition to buttocks leaves a line, other local otch is detected as colourless, is rotated further by
30min, buttocks is detected as colourless, illustrates that full impregnated, deliming terminate, and actual total deliming time is 140min, and wet blue is taken horse and stood
After one week, edge feel entirety relatively consolidation, and middle part difference is inconspicuous, effect is preferable.
Seeing table 1, the de-ash process that table 1 provides for the present invention is the Data Comparison of conventional deliming mode with comparative example.
The de-ash process that table 1 present invention provides is the Data Comparison of conventional deliming mode with comparative example
| Deliming mode | The deliming time | Body lotion ammonium salt detects | Wet blue position is poor |
| Conventional deliming (comparative example 1) | 120min | 78PPM | Position difference maximum |
| Carbon dioxide deliming (comparative example 2) | 300min | Nothing | Position difference minimum |
| Deliming agent without ammonia+carbon dioxide deliming | 140min | 3ppm | Position difference is in the middle of both |
Embodiment 2
Integrated artistic flow process:
Fur sorting → fur cuts lower limb → pre-immersion → pre-fleshing → main immersion → liming → lime-fleshing → graywall deburring
→ graywall split → deliming → softening → pickling → tanning → take horse
Fur sorts: mainly classify according to hair color and a width size.
Fur cuts lower limb: sliced off by the big oil clot that Corii Bovis seu Bubali tail, milk foam and edge are piled up.
Pre-immersion:
25 DEG C of water, the liquor ratio of 150%, add the immersion agent WS of 0.2%, the dispersant GC of 0.2%, the polyphosphoric acid of little molecule
Salt SWP0.3%, antibacterial 0.2%, turn 15 minutes/stop 15 minutes, 5 hours total times, it is desirable to return.
Some big oil clots and pork slag are mainly removed, in order to later stage material by pre-fleshing: require the most each cutter
Infiltration.
Main immersion: the water of 25 DEG C, adds little molecule Quadrafos SWP 0.4%, and soak agent WS 0.5%, dispersant GC
0.2%, soaking enzyme SE-2 0.15% and lipase B ORRON DL 0.1%, add appropriate antibacterial and magnesium oxide class
Compound MN/A 0.2%, turns and stops combining, control at 18h total time.
Liming processes: liming, lime-fleshing, graywall deburring, graywall split: conventionally carry out.
Deliming: be first the water of 30 DEG C that add 150%, without ammonia deliming agent ASB 0.3%, adds Calx suspending agent CR-
II 0.2%, turns 20 minutes, draining, the incomplete emptying of drainage requirement, and the water of reserved 30%, the ASB being initially charged 0.5% turns 20 points
Clock, then starts to be passed through carbon dioxide, and air inflow controls at about 9L/MIN, and rotary drum keeps rotating always, total rotation time control
System, at 150min～180min, checks otch to point, detects with phenolphthalein, it is desirable to buttocks otch is colourless, i.e. reach prescription.
Softening, pickling and tanning: carry out according to conventional technique.
After deliming terminates, it is necessary first to the concentration of ammonium salt in body lotion is detected, after testing, containing ammonium salt in body lotion
3ppm, this is the micro constitutent contained in material, is approximately considered not ammonium salt-containing；Next rotates 45 points after starting to be passed through carbon dioxide
Zhong Hou, finds with the otch of phenolphthalein detection hide, and in addition to buttocks leaves a line, other local otch is detected as colourless, is rotated further by
15min, buttocks is detected as colourless, illustrates that full impregnated, deliming terminate, and actual total deliming time is 110min, and wet blue is taken horse and stood
After one week, the dermatotome entirety degree of packing is the best, and the compare air inflow of carbon dioxide of its degree of packing is good at 7.5L/min,
But compared with Example 1, richness and the voluptuousness of dermatotome are slightly worse, and the clean level of grain is the most slightly worse, overall effect
The effect of the embodiment that compares 1 is slightly worse, and whole structure is basicly stable.
Embodiment 3
Integrated artistic flow process:
Fur sorting → fur cuts lower limb → pre-immersion → pre-fleshing → main immersion → liming → lime-fleshing → graywall deburring
→ graywall split → deliming → softening → pickling → tanning → take horse
Fur sorts: mainly classify according to hair color and a width size.
Fur cuts lower limb: sliced off by the big oil clot that Corii Bovis seu Bubali tail, milk foam and edge are piled up.
Pre-immersion:
25 DEG C of water, the liquor ratio of 150%, add the immersion agent WS of 0.2%, the dispersant GC of 0.2%, the polyphosphoric acid of little molecule
Salt SWP0.3%, antibacterial 0.2%, turn 15 minutes/stop 15 minutes, 5 hours total times, it is desirable to return.
Some big oil clots and pork slag are mainly removed, in order to later stage material by pre-fleshing: require the most each cutter
Infiltration.
Main immersion: the water of 25 DEG C, adds little molecule Quadrafos SWP 0.4%, and soak agent WS 0.5%, dispersant GC
0.2%, soaking enzyme SE-2 0.15% and lipase B ORRON DL 0.1%, add appropriate antibacterial and magnesium oxide class
Compound MN/A 0.2%, turns and stops combining, control at 18h total time.
Liming processes: liming, lime-fleshing, graywall deburring, graywall split: conventionally carry out.
Deliming: be first the water of 30 DEG C that add 150%, without ammonia deliming agent ASB 0.3%, adds Calx suspending agent CR-
II 0.2%, turns 20 minutes, draining, the incomplete emptying of drainage requirement, and the water of reserved 30%, the ASB being initially charged 0.5% turns 20 points
Clock, then starts to be passed through carbon dioxide, and air inflow controls at about 6L/MIN, and rotary drum keeps rotating always, total rotation time control
System, at 150min～180min, checks otch to point, detects with phenolphthalein, it is desirable to buttocks otch is colourless, i.e. reach prescription.
Softening, pickling and tanning: carry out according to conventional technique.
After deliming terminates, it is necessary first to the concentration of ammonium salt in body lotion is detected, after testing, containing ammonium salt in body lotion
2.5ppm, this is the micro constitutent contained in material, is approximately considered not ammonium salt-containing；Next rotates 90 after starting to be passed through carbon dioxide
After minute, finding with the otch of phenolphthalein detection hide, in addition to buttocks leaves a line, other local otch is detected as colourless, then turns
Dynamic 30min, buttocks detects thicker location detection still one, illustrates that deliming is not very thorough, then time delay rotates 15 minutes,
It is colourless that buttocks detects thicker location detection, illustrates that full impregnated, deliming terminate, and actual total deliming time is 185min, wet blue
After taking horse one week of standing, the overall dermatotome degree of packing is preferable, but the air inflow of the carbon dioxide that compares is at 7.5L/MIN
More somewhat softer, indivedual cowhide edge are somewhat soft, and whole structure is more slightly worse than embodiment.
From the point of view of contrast by three embodiments, the degree of packing in conjunction with deliming dermatotome is relatively good, and position difference is also little, but
Being comparatively speaking, in the case of when deliming, the air inflow of carbon dioxide is relatively big, the deliming time is short, and speed is fast, but dermatotome
Richness and the clean level on surface not enough, in the case of air inflow is little, the deliming time is long, and the degree of packing of dermatotome to differ from one
A bit, but the clean level on richness and surface is best, and Comprehensive Correlation, when air inflow controls at 7.5L/min, wet blue is whole
The effect of body is best.
Seeing table 2, table 2 is that embodiment of the present invention preparation condition compares with the data of result.
Table 2 embodiment of the present invention preparation condition compares with the data of result
A kind of de-ash process removing from office skin provided the present invention above is described in detail, used herein specifically
Principle and the embodiment of the present invention are set forth by individual example, and the explanation of above example is only intended to help and understands the present invention
Method and core concept, including best mode, and also make any person skilled in the art can put into practice this
Bright, including manufacturing and using any device or system, and the method implementing any combination.It should be pointed out that, for the art
Those of ordinary skill for, under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and repaiies
Decorations, these improve and modify in the protection domain also falling into the claims in the present invention.The scope of patent protection of the present invention is by power
Profit require limit, and those skilled in the art can be included it is conceivable that other embodiments.If these other embodiments have
Have the structural element being not different from claim character express, if or they include character express with claim without
The equivalent structural elements of essence difference, then these other embodiments also should comprise within the scope of the claims.
Claims (10)
1. the de-ash process removing from office skin, it is characterised in that comprise the following steps:
A) by after the leather skin of pre-treatment carries out liming process, molding graywall is obtained；
B) after molding graywall above-mentioned steps obtained carries out deliming under the effect without ammonia deliming agent, carbon dioxide and water,
Leather skin after deliming.
De-ash process the most according to claim 1, it is characterised in that the quality of described deliming agent without ammonia accounts for described leather cortex
The 0.6%～1.0% of amount；
The air inflow of described carbon dioxide is 6～8.5L/min；
The quality of described water accounts for the 120%～180% of described leather cortex amount；
The time of described deliming is 150～180min.
De-ash process the most according to claim 1, it is characterised in that described deliming agent without ammonia includes Acidic organic matter, nothing
One or more in machine acid, Acidic inorganic salts and organic fermented product；
Described Acidic organic matter includes one or more in lactic acid, formic acid and acetic acid；
Described mineral acid includes sulphuric acid and/or hydrochloric acid.
De-ash process the most according to claim 1, it is characterised in that described deliming agent without ammonia include without ammonia deliming agent ASB,
The DEKALON CL of deliming agent without ammonia, without ammonia deliming agent SEACOPOL DL830 with without the one in ammonia deliming agent TRUPOCAL PN
Or it is multiple；
Described leather skin includes one or more in Corii Bovis seu Bubali, Corii Caprae seu Ovis, Corii Sus domestica, donkey skin and Corium Equi.
De-ash process the most according to claim 1, it is characterised in that described deliming includes pre-deliming and main deliming；
Described pre-deliming is carried out under the effect without ammonia deliming agent and water；
Described main deliming is carried out under the effect without ammonia deliming agent, carbon dioxide and water.
De-ash process the most according to claim 5, it is characterised in that described step B) particularly as follows:
B1) the molding graywall that above-mentioned steps obtained, put into rotary drum or paddle-tumble rotate without ammonia deliming agent and water and carry out pre-deliming
After, part discharge opeing；
B2) then again add without ammonia deliming agent in rotary drum or paddle-tumble, rotate, then be passed through carbon dioxide, be rotated further and carry out
After main deliming, obtain the leather skin after deliming.
De-ash process the most according to claim 6, it is characterised in that described step B1) in, the matter of described deliming agent without ammonia
Amount accounts for the 0.2%～0.4% of described leather cortex amount；
The time of described rotation is 10～30 minutes；
The ratio of described part discharge opeing is 60%～80%；
Described step B2) in, described addition again accounts for the 0.4%～0.6% of described leather cortex amount without the quality of ammonia deliming agent；
The time of described rotation is 10～30 minutes.
De-ash process the most according to claim 6, it is characterised in that described step B1) in, also include Calx suspending agent；
The quality of described Calx suspending agent accounts for the 0.1%～0.3% of described leather cortex amount.
9. according to the de-ash process described in claim 1～8 any one, it is characterised in that described pre-treatment includes hair successively
Lower limb, pre-immersion, pre-fleshing and main immersion are cut in skin sorting, fur；
Described liming processes and includes liming, lime-fleshing, graywall deburring and graywall split successively.
De-ash process the most according to claim 9, it is characterised in that concretely comprising the following steps of described pre-immersion:
Putting in rotary drum or paddle-tumble by pending semi-finished product, immersion agent, dispersant, Quadrafos, antibacterial and water, interval turns
Dynamic；
The time of described pre-immersion is 4～6 hours；
Concretely comprising the following steps of described main immersion:
Semi-finished product, immersion agent, dispersant, Quadrafos, soaking enzyme, lipase, antibacterial, magnesium oxide compounds and water are put
Enter in rotary drum or paddle-tumble, intermittent rotary；
The time of described main immersion is 15～21 hours.
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| CN105177192A (en) * | 2015-08-05 | 2015-12-23 | 蔡健 | Non-ammonium deliming agent and leather non-ammonium deliming technology |
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| 石碧 等: "《轻化工程导论》", 31 August 2010 * |
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