CN112335998B - Method for preparing women's shoes capable of maintaining three-dimensional state for a long time by using natural leather - Google Patents
Method for preparing women's shoes capable of maintaining three-dimensional state for a long time by using natural leather Download PDFInfo
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- CN112335998B CN112335998B CN202011134880.3A CN202011134880A CN112335998B CN 112335998 B CN112335998 B CN 112335998B CN 202011134880 A CN202011134880 A CN 202011134880A CN 112335998 B CN112335998 B CN 112335998B
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
- A43D8/02—Cutting-out
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/14—Devices for filling the shoe bottom
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/20—Arrangements for activating or for accelerating setting of adhesives, e.g. by using heat
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D95/00—Shoe-finishing machines
- A43D95/02—Machines for treating or smoothing shoe uppers to remove wrinkles, folds, or the like
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Abstract
The application relates to the field of leather, and particularly discloses a method for preparing a woman's shoe capable of keeping a three-dimensional state for a long time by utilizing natural leather. The preparation method comprises the following steps: preparing leather shoe materials; cutting a natural leather material, performing hot press molding on the cut natural leather to enable the inner upper surface of each leather shoe to form an inner concave surface and the outer upper surface of each leather shoe to form an outer convex surface, and cutting redundant leather; preparing natural leather filling powder and an adhesive into vamp fillers; filling the concave surface with vamp filler, polishing the inner upper surface and the outer upper surface of the leather shoe after the vamp filler is stably molded, and manufacturing a leather shoe upper surface; the upper surface of the leather shoe is bonded with the sole to prepare the prefabricated leather shoe; drying the prefabricated leather shoes, pulling the upper, cleaning, and shaping at high temperature; sequentially carrying out waxing, gluing, drying and cooling setting treatment on the surface of the vamp; and (5) assembling the shoe heel and the shoe pad to obtain a finished product. The preparation method of this application has the advantage that makes the woman's shoe can keep the third dimension lastingly.
Description
Technical Field
The application relates to the field of leather, in particular to a method for preparing a woman's shoe capable of keeping a three-dimensional state for a long time by utilizing natural leather.
Background
Along with the development of Chinese economy, the living standard of people is continuously improved, the demand of people on daily articles such as clothes, shoes and hats is increasingly vigorous, particularly, the women's shoe industry is met with a new development opportunity, leather shoes are common clothes in life, the leather shoes can improve the quality and the image of people, are also signs of identity and are popular with women.
Leather shoes are mainly made of leather materials, leather is divided into two categories of natural leather and non-natural leather, people prefer leather shoes made of natural leather, the style and design of the leather shoes are greatly developed along with the pursuit of people for beauty, and in order to increase the aesthetic feeling of the leather shoes, the leather shoes are generally required to be processed and designed, so that the leather shoes are better in three-dimensional.
In order to increase the stereoscopic impression of the upper surface of the leather shoe, the upper surface of the leather shoe needs to be processed, different concave-convex shapes are designed on the upper surface of the leather shoe in the existing hot-press forming mode, but after the upper surface of the leather shoe is subjected to hot-press forming for a period of time and along with the use of people, the upper surface of the leather shoe is very easy to be in the original plane shape and even generates unattractive deformation, so that the leather shoe cannot keep the stereoscopic impression for a long time.
Therefore, people begin to research and fill the vamp filler made of leather filling powder and adhesive in the inner upper surface of the leather shoe, so that the prepared women's shoes have good aesthetic feeling and stereoscopic impression within a period of time.
In view of the above-mentioned related technologies, the inventor thinks that there is a defect that the existing vamp filler is made by mixing leather filling powder and an adhesive, but after a period of time, the vamp filler is easy to deform due to various properties of the adhesive being easy to lose efficacy, such as aging, oxidation, insufficient tensile strength, etc., of the adhesive, which causes the vamp of a leather shoe to keep three-dimensional and short in durability, even causes abnormal deformation of the vamp.
Disclosure of Invention
In order to make the woman's shoe can keep the third dimension lastingly, this application provides one kind and utilizes natural leather preparation can keep three-dimensional woman's shoe preparation method lastingly.
The application provides an utilize natural leather preparation can keep three-dimensional woman's shoe preparation method lastingly, adopts following technical scheme:
a method for preparing women's shoes capable of keeping three-dimensional for a long time by utilizing natural leather comprises the following steps:
step 1), preparing materials for preparing leather shoe upper surfaces, soles, heels and insoles of leather shoes;
step 2), preparing the leather shoe upper surface, which specifically comprises the following steps:
step 2-1), taking a natural leather material, drawing a leather material by using a sample plate which is previously punched, cutting, carrying out hot press molding on the cut natural leather according to a mold, so that a certain inner concave surface is formed on the inner upper surface of each leather shoe, an outer convex surface is formed on the outer upper surface of each leather shoe, and cutting redundant leather material according to the size;
step 2-2), mixing the natural leather filling powder with an adhesive to prepare vamp fillers;
and 2-3), filling the concave surface with vamp fillers, polishing the outer upper surface and the inner upper surface of the leather shoe to be smooth after the vamp fillers are stably formed on the inner upper surface of the leather shoe, and manufacturing the leather shoe upper surface.
Step 3), bonding the upper surface of the leather shoe and the sole by using an adhesive to prepare a prefabricated leather shoe;
step 4), drying the prefabricated leather shoes, then pulling the upper, cleaning the dried vamps, and shaping at high temperature after cleaning;
step 5), sequentially carrying out waxing, glue brushing, drying and cooling setting treatment on the surface of the vamp;
and 6), assembling the shoe heel and the shoe pad to obtain the finished leather shoe.
By adopting the technical scheme, the concave surface is filled with a proper amount of vamp filler, so that the concave surface and the convex surface of the upper surface of the leather shoe can keep the concave-convex shape relatively lastingly, and the upper surface of the leather shoe can keep the three-dimensional shape lastingly.
The natural leather filling powder and the adhesive are mixed to prepare the vamp filling material, so that the material of the vamp filling material and the material of the leather shoes are both natural leather, the material of the leather shoes is all natural leather, the vamp filling material can be better adhered to the inner upper surfaces of the leather shoes, and the three-dimensional durability of the upper surfaces of the leather shoes can be favorably prolonged.
After the vamp filler is stably formed on the inner upper surface of the leather shoe, the upper surface of the leather shoe is polished to be smooth, so that the vamp filler and the inner upper surface of the leather shoe are well combined together, and the aesthetic feeling of the upper surface of the leather shoe is improved.
The leather shoe upper surface and the sole are bonded by the adhesive, so that the leather shoe upper surface and the sole are combined conveniently, the operation is simple, and the production efficiency is improved.
Preferably, the natural leather filling powder in the step 2-2) is prepared by crushing the excessive fine leather materials cut in the step 2-1).
By adopting the technical scheme, the natural leather filling powder is prepared by crushing the cut excessive fine leather materials, so that the natural leather materials can be fully utilized, the utilization rate of the natural leather is improved, and the economic benefit of the product is improved.
Preferably, the mass ratio of the natural leather filling powder to the adhesive in the step 2-2) is 1: 12-18.
By adopting the technical scheme, the natural leather filling powder and the adhesive are adopted in a mass ratio of 12-18: 1 mixes and makes vamp stopping for the vamp stopping has the stable form of preferred after making its shaping in the adhesion preferred of the interior group face of leather shoes, is difficult for producing deformation, thereby is favorable to utilizing the woman's shoe of natural leather preparation can be comparatively lasting to keep the three-dimensional state, and then further makes the woman's shoe have the aesthetic feeling of preferred in longer time.
Preferably, the prefabricated leather shoes in the step 4) are dried at the temperature of 40-50 ℃.
By adopting the technical scheme, the prefabricated leather shoes are dried at the temperature of 40-50 ℃, and the adhesive has good adhesion performance at low temperature, so that the vamp and the sole are bonded more firmly, the forming of the inner upper surface of the leather shoes filled with the vamp filler is more stable, the deformation is less likely to occur, the lasting time of the leather shoe upper surface maintaining three-dimensional is prolonged, and the experience feeling of a user is improved.
Preferably, the adhesive comprises the following components in parts by weight:
45-65 parts of polyether polyol;
1-3 parts of isophorone diisocyanate;
0.4 to 0.8 portion of phenyl propyl dimethyl silicon alkoxy silicate;
10-20 parts of graphene oxide;
8-10 parts of dopamine;
4.4-5.6 parts of a thickening agent;
40-60 parts of water.
By adopting the technical scheme, the polyether polyol is used as the main material to perform a polymerization reaction with isophorone diisocyanate, so that the prepared adhesive has good optical stability resistance and chemical resistance, and leather shoes bonded by the adhesive keep better aesthetic feeling.
By adopting phenyl propyl dimethyl silicon alkoxy silicate ester, when phenyl propyl dimethyl silicon alkoxy silicate ester is matched with isophorone diisocyanate, the performance of an adhesive can be improved, and the adhesive has better bonding effect and tensile strength, so that the abrasion and the sinking of vamp fillers are reduced, the inner concave surface and the outer convex surface of the upper surface of the leather shoe can keep a good three-dimensional state for a longer time, the upper surface of the leather shoe is not easy to sink, and further the upper surface of the women's shoe prepared by utilizing natural leather can keep a three-dimensional state for a long time, so that the shoe has better three-dimensional aesthetic feeling, and the experience feeling of a user is improved.
By adopting the graphene oxide, the graphene oxide can modify the polyurethane adhesive, so that the adhesive has a higher bonding effect, and also has better water resistance and thermal aging resistance.
By adopting the dopamine solution, the dopamine solution plays a critical role in the bonding performance of the adhesive, so that the adhesive has good bonding performance.
By adopting the thickening agent, the thickening agent has a certain tackifying effect on the adhesive, the bonding performance of the adhesive can be improved, and the vamp filler prepared by mixing the natural leather filling powder and the adhesive has better bonding performance, so that the natural leather filling powder is better adhered to the inner upper surface of the leather shoe, and the lasting of the three-dimensional shape of the upper surface of the leather shoe can be prolonged.
The thickening agent can be carbomer, sodium alginate and acacia.
Preferably, the adhesive further comprises the following components in parts by weight:
1-3 parts of hydantoin;
1-3 parts of sodium molybdate dihydrate.
By adopting the technical scheme, when hydantoin and sodium molybdate dihydrate are adopted and the hydantoin and the sodium molybdate dihydrate are matched with graphene oxide, the bonding effect of the adhesive is further improved, so that the vamp and the sole are bonded more firmly, the vamp filler has better aging resistance, and the leather shoes can be kept in a three-dimensional state for a long time.
Preferably, the adhesive further comprises the following components in parts by weight:
1-2 parts of an antioxidant.
By adopting the technical scheme, the oxidation of the adhesive can be slowed down by adopting the antioxidant, so that the adhesive is not easy to oxidize and age, the bonding effectiveness of the adhesive is favorably prolonged, and the leather shoes are not easy to open.
The antioxidant can be hindered phenol antioxidant, phosphite antioxidant and thioester antioxidant.
Preferably, the adhesive further comprises the following components in parts by weight:
9-13 parts of konjak starch;
10-14 parts of talcum powder.
By adopting the technical scheme, the konjak starch and the talcum powder are used as the fillers of the adhesive, so that the consistency of the adhesive is increased, the thermal expansion coefficient is reduced, and the contractility is reduced, thereby being beneficial to improving the impact strength and the tensile strength of the adhesive, further ensuring that leather shoes are not easy to open the adhesive, and further ensuring that the vamp keeps a better three-dimensional effect.
Preferably, the preparation method of the adhesive comprises the following steps:
step a), raw material pretreatment: premixing a thickening agent and water, uniformly stirring, adding dopamine, uniformly stirring, heating to 83-88 ℃, and preserving heat for 3-8 minutes to obtain a first mixture;
step b), mixing polyether polyol, isophorone diisocyanate, phenyl propyl dimethyl silicon alkoxy silicate and graphene oxide, uniformly stirring, and then heating to 90-110 ℃ while stirring;
step c), mixing the first mixture and the second mixture, uniformly stirring, heating to 150-;
the step a) and the step b) can be carried out simultaneously or not in sequence.
Through adopting above-mentioned technical scheme, through premixing thickener and water earlier for the solubility of thickener in aqueous is better, adds dopamine, then heats, makes thickener and dopamine dispersion effect in aqueous better, is favorable to improving the viscidity of gluing agent.
Preferably, after dopamine is added in the step a), hydantoin, sodium molybdate dihydrate, konjac starch and talcum powder are added, and then the mixture is continuously stirred and reacted for 2 to 3 hours at 83 to 88 ℃;
an antioxidant is also added in the step b).
By adopting the technical scheme, the prepared adhesive has good viscosity and also has good impact strength and mechanical strength, so that leather shoes bonded by the adhesive are not easy to deform and split, the service life of the leather shoes is prolonged, and the three-dimensional durability of the vamps is prolonged.
In summary, the present application has the following beneficial effects:
1. according to the leather shoe upper filling material, the natural leather filling powder and the adhesive are mixed to prepare the vamp filling material, and the proper amount of the vamp filling material is used for filling the concave surface, so that the vamp filling material can be better adhered to the inner upper surface of a leather shoe, the concave surface and the convex surface of the leather shoe upper surface can keep the concave-convex shape relatively lastingly, and further the leather shoe upper surface can keep the three-dimensional shape lastingly.
2. When preferentially adopting phenylpropyl dimethyl silicon alkoxy silicate and isophorone diisocyanate to cooperate in this application, can improve the performance of gluing agent, have the bonding effect and the impact strength of preferred to be favorable to reducing the wearing and tearing and recessed of vamp filler, leather shoes vamp is difficult for recessed, and then makes the woman's shoe vamp that utilizes natural leather to prepare can keep the solid for a long time.
3. In the application, hydantoin and sodium molybdate dihydrate are preferably adopted, and when the hydantoin and the sodium molybdate dihydrate are matched and matched with graphene oxide, the effect of further improving the bonding effect of the adhesive is achieved, so that the vamp and the sole are bonded more firmly, and the vamp filler has better aging resistance, so that the leather shoes can be kept in a three-dimensional state for a long time.
Drawings
Fig. 1 is a schematic flow diagram of a method for preparing an adhesive provided by the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples.
The information on the source of each raw material component in the following examples and comparative examples is shown in Table 1
TABLE 1
Examples 1 to 3
An adhesive comprising the following components:
polyether polyol, isophorone diisocyanate, phenyl propyl dimethyl silicon alkoxy silicate, graphene oxide, dopamine, a thickening agent and water.
The thickening agent is a compound of carbomer, sodium alginate and Arabic gum.
In examples 1-3, the amounts (in Kg) of each component added are specified in Table 2
TABLE 2
Referring to fig. 1, the preparation method of the adhesive in embodiments 1 to 3 includes the following steps:
step a), raw material pretreatment: firstly, adding a thickening agent and water into a stirrer to be mixed, uniformly stirring at the rotating speed of 60r/min, then adding dopamine, uniformly stirring, heating to 85 ℃, preserving heat for 5 minutes, and discharging to a container to obtain a first mixture;
step b), adding polyether polyol, isophorone diisocyanate, phenyl propyl dimethyl silicon alkoxy silicate and graphene oxide into an extruder together, uniformly stirring, and heating to 100 ℃ while stirring to obtain a second mixture;
and c), adding the first mixture into the second mixture, uniformly stirring at the rotating speed of 120r/min, heating to 175 ℃, and keeping the temperature for 5 minutes to obtain the adhesive.
Example 4
An adhesive, which differs from example 2 only in that:
the preparation method of the adhesive comprises the following steps:
in the step a), heating to 83 ℃, and keeping the temperature for 3 minutes;
in the step b), heating to 90 ℃ while stirring;
in step c), the temperature is raised to 150 ℃ and maintained for 3 minutes.
Example 5
An adhesive, which differs from example 2 only in that:
the preparation method of the adhesive comprises the following steps:
in the step a), heating to 88 ℃, and keeping the temperature for 9 minutes;
in the step b), heating to 110 ℃ while stirring;
in step c), the temperature is raised to 200 ℃ and maintained for 8 minutes.
Examples 6 to 8
An adhesive, which differs from example 2 only in that:
the adhesive also comprises the following components:
a hydantoin;
sodium molybdate dihydrate.
In examples 6 to 8, the amounts (in Kg) of the respective components added are specified in Table 3
TABLE 3
Hydantoin and sodium molybdate dihydrate are added with dopamine in the step a), stirred uniformly and then added into a stirrer, and then continuously stirred and reacted for 2-3 hours at 83-88 ℃ and stirred uniformly.
Examples 9 to 11
An adhesive, which differs from example 2 only in that:
the adhesive also comprises the following components: an antioxidant.
The antioxidant is hindered phenol antioxidant.
In examples 9 to 11, the amounts (in Kg) of the respective components added are specified in Table 4
TABLE 4
Adding the hindered phenol antioxidant, polyether polyol, isophorone diisocyanate, phenyl propyl dimethyl silicon alkoxy silicate and graphene oxide into an extruder in the step b), and uniformly stirring.
Examples 12 to 14
An adhesive, which differs from example 2 only in that:
the adhesive also comprises the following components:
konjac starch;
talc powder.
In examples 12 to 14, the amounts (in Kg) of the respective components added are specified in Table 5
TABLE 5
Adding dopamine into konjac starch and talcum powder in the step a), stirring uniformly, adding into a stirrer, continuously stirring at 83-88 ℃ for reacting for 2-3 hours, and stirring uniformly.
Examples 15 to 17
An adhesive, which differs from example 2 only in that:
the adhesive also comprises the following components: hydantoin, sodium molybdate dihydrate, an antioxidant, konjac starch and talcum powder.
The antioxidant is hindered phenol antioxidant.
In examples 15 to 17, the amounts (in Kg) of the respective components added are specified in Table 6
TABLE 6
Hydantoin, sodium molybdate dihydrate, konjac starch and talcum powder are added with dopamine in the step a), stirred uniformly and then added into a stirrer, and then continuously stirred and reacted for 2-3 hours at 83-88 ℃ and stirred uniformly.
Adding the hindered phenol antioxidant, polyether polyol, isophorone diisocyanate, phenyl propyl dimethyl silicon alkoxy silicate and graphene oxide into an extruder in the step b), and uniformly stirring.
Example 18
The application discloses a preparation method of can lasting three-dimensional woman's shoe of keeping who utilizes natural leather preparation, including following step:
step 1), preparing materials for preparing natural leather, soles, heels and insoles of upper surfaces of leather shoes, and tools such as scissors, a grinding machine, an expanding agent, a cleaning agent, an adhesive and the like.
Step 2), preparing the leather shoe upper surface, which specifically comprises the following steps:
step 2-1), taking 1.4-1.6mm of natural leather material, drawing leather material by using a sample plate which is subjected to plate beating in advance, cutting by using scissors, then carrying out hot press molding on the cut natural leather according to a mold, forming a certain inner concave surface on the inner upper surface of each leather shoe, forming an outer convex surface on the outer upper surface of each leather shoe, and then cutting redundant leather material according to the size;
step 2-2), crushing the surplus fine leather materials cut in the step 2-1) into ultramicro natural leather filling powder with the particle size of 160-200 meshes, and uniformly mixing the prepared natural leather filling powder and the adhesive according to the mass ratio of 15:1 to prepare vamp fillers;
and 2-3) filling the inner concave surface with a proper amount of the vamp filler in the step 2-2) in a coating mode, and polishing the outer upper surface and the inner upper surface of the leather shoe by using a polisher to be smooth after the vamp filler is stably formed on the inner upper surface of the leather shoe to manufacture the leather shoe upper surface.
Step 3), gluing one side of the upper surface of the leather shoe by using an adhesive, then adhering the leather shoe to the sole and nailing the leather shoe to obtain a prefabricated leather shoe;
step 4), drying the prefabricated leather shoes at the temperature of 45 ℃, then pulling the upper, cleaning the dried vamps with a cleaning agent, and shaping at high temperature after cleaning;
step 5), pulling out the nails, and then sequentially carrying out waxing, glue brushing, drying and cooling setting treatment on the surface of the vamp;
and 6), filling the heel with the expanding agent, then adhering the heel with the sole, and then putting the insole into the vamp to obtain the finished leather shoe.
In this embodiment, the natural leather material is buffy leather.
The adhesive in this example was the adhesive prepared in example 1.
Example 19
A method for preparing women's shoes capable of maintaining three-dimensional shape permanently by using natural leather, which is different from example 18 only in that:
the adhesive in this example was the adhesive prepared in example 2.
Example 20
A method for preparing women's shoes capable of maintaining three-dimensional shape permanently by using natural leather, which is different from example 18 only in that:
the adhesive in this example was the adhesive prepared in example 3.
Example 21
A method for preparing women's shoes capable of maintaining three-dimensional shape permanently by using natural leather, which is different from example 18 only in that:
the adhesive in this example was the adhesive prepared in example 7.
Example 22
A method for preparing women's shoes capable of maintaining three-dimensional shape permanently by using natural leather, which is different from example 19 only in that:
the adhesive in this example was the adhesive prepared in example 10.
Example 23
A method for preparing women's shoes capable of maintaining three-dimensional shape permanently by using natural leather, which is different from example 18 only in that:
the adhesive in this example was the adhesive prepared in example 13.
Example 24
A method for preparing women's shoes capable of maintaining three-dimensional shape permanently by using natural leather, which is different from example 18 only in that:
the adhesive in this example was the adhesive prepared in example 16.
Comparative example 1
An adhesive, which differs from example 2 only in that:
the preparation method of the adhesive comprises the following steps:
in the step b), equivalent polyether polyol is adopted to replace isophorone diisocyanate and phenyl propyl dimethyl silicon alkoxy silicate.
Comparative example 2
An adhesive, which differs from example 2 only in that:
the preparation method of the adhesive comprises the following steps:
in step b) the same amount of polyether polyol is used instead of isophorone diisocyanate.
Comparative example 3
An adhesive, which differs from example 2 only in that:
the preparation method of the adhesive comprises the following steps:
in step b), equivalent polyether polyol is used to replace phenyl dimethyl silicon alkoxy silicate.
Comparative example 4
An adhesive, which differs from example 7 only in that:
the preparation method of the adhesive comprises the following steps:
in the step b), equal amount of polyether polyol is adopted to replace isophorone diisocyanate and phenyl propyl dimethyl silicon alkoxy silicate.
Comparative example 5
A preparation method for preparing women's shoes by using natural leather comprises the following steps:
step 1), preparing materials for preparing natural leather, soles, heels and insoles of upper surfaces of leather shoes, and tools such as scissors, a grinding machine, an expanding agent, a cleaning agent, an adhesive and the like.
Step 2), preparing the leather shoe upper surface, which specifically comprises the following steps:
step 2-1), taking 1.4-1.6mm of natural leather material, drawing leather material by using a sample plate which is subjected to plate beating in advance, cutting by using scissors, then carrying out hot press molding on the cut natural leather according to a mold, forming a certain inner concave surface on the inner upper surface of each leather shoe, forming an outer convex surface on the outer upper surface of each leather shoe, and then cutting redundant leather material according to the size;
and 2-2), polishing the upper surface of the leather shoe by using a polishing machine to be smooth, and manufacturing the upper surface of the leather shoe.
Step 3), gluing one side of the upper surface of the leather shoe by using an adhesive, then adhering the leather shoe to the sole and nailing the leather shoe to obtain a prefabricated leather shoe;
step 4), drying the prefabricated leather shoes at the temperature of 45 ℃, then pulling the upper, cleaning the dried vamps with a cleaning agent, and shaping at high temperature after cleaning;
step 5), pulling out the nails, and then sequentially carrying out waxing, glue brushing, drying and cooling setting treatment on the surface of the vamp;
and 6), filling the heel with the expanding agent, then adhering the heel with the sole, and then putting the insole into the vamp to obtain the finished leather shoe.
In this embodiment, the natural leather material is buffy leather.
Comparative example 6
A method for preparing women's shoes capable of maintaining three-dimensional shape permanently by using natural leather, which is different from example 19 only in that:
the adhesive of the comparative example was a PU-502 aqueous polyurethane adhesive sold by Guangzhou New Material science and technology Co.
Experiment 1
The upper surfaces of the leather shoes prepared in examples 18 to 24 were compared with the upper surfaces of the leather shoes prepared in comparative examples 5 and 6, and the depth of the concave position formed by hot pressing using the mold was 5mm as the initial depth, and the depth of the concave position of the inner upper surface of the leather shoes was compared with each other after the shoe was left for different periods of time, and the depth of the concave position of the inner upper surface was measured with a ruler.
Experiment 2
The initial viscosities of the adhesives prepared in examples 1-17 and comparative examples 1-4 were determined according to the national standard GB/T2794-.
Experiment 3
The peel strength of the adhesives prepared in examples 1 to 17 and comparative examples 1 to 4 was measured according to the national standard GB/T7122-1996 "determination of peel strength of high strength adhesive Floating roll method".
Experiment 4
The tensile strengths of the adhesives prepared in examples 1 to 17 and comparative examples 1 to 4 were measured according to the national standard GB/T6329-1996 determination of tensile strength of adhesive Butt-Joint.
Experiment 5
The heat aging resistance of the adhesives prepared in examples 1-17 and comparative examples 1-4 was tested according to chemical standard HG/T2815 1996 creep method for adhesive Heat resistance test method for shoes.
The assay data for experiment 1 is detailed in table 7.
The assay data for experiments 2-5 are detailed in Table 8.
TABLE 7
According to the comparison of the data of the example 6 and the comparative example 5 in the table 7, the vamp filler is prepared by uniformly mixing the conventional adhesive and the natural leather filling powder, the depth of the depression of the inner upper surface of the leather shoe is gradually reduced with the increase of the standing time, and the reduction range is slowed down, so that the durability of the three-dimensional upper surface of the leather shoe can be improved to a certain extent after the vamp filler is prepared by uniformly mixing the conventional adhesive and the natural leather filling powder and filled in the inner upper surface of the leather shoe.
According to the comparison of the data of examples 18 to 20 and comparative examples 5 and 6 in table 7, the adhesives prepared in examples 1 to 3 and the natural leather filling powder are uniformly mixed to prepare the vamp filler, and the reduction of the depth of the depression of the inner upper surface of the leather shoe is smaller with the increase of the standing time, which proves that the adhesive prepared in examples 1 to 3 and the natural leather filling powder are uniformly mixed to prepare the vamp filler to fill the inner upper surface of the leather shoe, so that the three-dimensional time of the upper surface of the leather shoe can be prolonged to a greater extent, the upper is not easy to deform, and the better aesthetic feeling is kept.
As can be seen from comparison of the data in table 7 in examples 22 and 19, the vamp filler prepared by uniformly mixing the adhesive prepared in example 10 and the natural leather filling powder reduced the extent of the decrease in the depth of the depression of the inner upper surface of the leather shoe to some extent as the standing time was prolonged, which demonstrates that the vamp filler prepared by uniformly mixing the adhesive prepared in example 10 and the natural leather powder had a certain time for the inner upper surface of the leather shoe to maintain the three-dimensional state.
According to the comparison of the data of the example 23 and the example 19 in table 7, the vamp filler prepared by uniformly mixing the adhesive prepared in the example 13 and the natural leather filling powder is reduced to a certain extent with the continuous increase of the standing time, which proves that the time for the leather shoe upper to maintain the three-dimensional state is prolonged to a certain extent after the vamp filler prepared by uniformly mixing the adhesive prepared in the example 13 and the natural leather powder is used for the leather shoe upper, so that the leather shoe can maintain the three-dimensional beautiful state for a longer duration.
As can be seen from comparison of the data in table 7 between example 21 and example 19, the vamp filler prepared by uniformly mixing the adhesive prepared in example 7 and the natural leather filling powder has a smaller reduction in the depth of the depression of the inner upper surface of the leather shoe as the standing time increases, which proves that the lasting property of the upper surface of the leather shoe can be further improved to a greater extent after the vamp filler prepared by uniformly mixing the adhesive prepared in example 7 and the natural leather filling powder is filled in the inner upper surface of the leather shoe.
According to the comparison of the data of the embodiment 24 and the embodiment 19 in table 7, the adhesive prepared in the embodiment 16 and the natural leather filling powder are uniformly mixed to prepare the vamp filler, so that the depth of the depression of the inner upper surface of the leather shoe is basically and smoothly changed and slightly changed along with the increase of the placing time, and the fact that the vamp can be maintained in a three-dimensional state for a long time after the vamp filler is prepared by uniformly mixing the adhesive prepared in the embodiment 16 and the natural leather filling powder to fill the inner upper surface of the leather shoe is proved, so that the women's shoes prepared by the natural leather can be maintained in a three-dimensional state for a long time, and the time for maintaining the three-dimensional aesthetic feeling is longer.
TABLE 8
According to the comparison of the data of comparative example 2 and comparative example 1 in table 8, the adhesive has a certain increase in peel strength, tensile strength and thermal aging resistance without significant change in viscosity when isophorone diisocyanate is added, and the polyurethane adhesive produced by the polymerization reaction of isophorone diisocyanate and polyether polyol has a certain thermal aging resistance, adhesion effect and tensile strength.
According to the comparison of the data of comparative example 3 and comparative example 1 in table 8, the addition of phenylpropyl dimethyl silicon alkoxy silicate results in no obvious change in the initial adhesion, peel strength, tensile strength and thermal aging resistance of the adhesive, which indicates that phenylpropyl dimethyl silicon alkoxy silicate has no negative effect on the performance of the adhesive.
According to the comparison of the data of comparative example 4 and comparative example 1 in table 8, the addition of hydantoin and sodium molybdate dihydrate results in a significant improvement in peel strength and a greater improvement in thermal aging resistance, which proves that the addition of hydantoin, sodium molybdate dihydrate and graphene oxide in combination has the effect of further improving the adhesion of an adhesive, so that the peel strength is increased, thereby facilitating the firmer adhesion of the upper and the sole, and also facilitating the slowing of the aging of the upper filler, thereby facilitating the lasting maintenance of the three-dimensional state of the leather shoe.
According to the comparison of the data of the example 2 and the comparative examples 2 and 3 in table 8, the addition of phenylpropyldimethylsilalkoxysilicate and isophorone diisocyanate significantly improves the peel strength and the tensile strength, and it is proved that when phenylpropyldimethylsilalkoxysilicate is combined with isophorone diisocyanate, the polyurethane adhesive produced by the polymerization reaction of isophorone diisocyanate and polyether polyol has a better adhesive effect and tensile strength, so that leather shoes prepared by using the adhesive are not prone to glue spreading and deformation, and the fact that leather shoes prepared by using the adhesive keep the three-dimensional durability longer can be verified.
According to the comparison of the data of the examples 6 to 8 and the data of the examples 2 and the comparative example 4 in the table 8, the peel strength and the aging resistance are increased to a certain extent by adding the hydantoin and the sodium molybdate dihydrate, the tensile strength is remarkably improved, and the results prove that when the hydantoin and the sodium molybdate dihydrate are matched with the phenyl propyl dimethyl silicon alkoxy silicate and the isophorone diisocyanate, the effects of further enhancing the peel strength and the aging resistance of the adhesive are less remarkable, the effect of improving the tensile strength is better, and the adhesive has certain durability of prolonging the three-dimensional upper surface of the leather shoe.
According to comparison of data of examples 9-11 and example 2 in table 8, the addition of hindered phenol antioxidants enhances peel strength, which indicates that oxidation of the adhesive can be slowed down, and the effectiveness of the adhesive effect of the adhesive can be improved, so that the adhesive is not easily peeled off, the peel strength of the adhesive is improved, and the three-dimensional lasting time of the leather shoes can be prolonged.
According to comparison of data of examples 12-14 and example 2 in table 8, the initial viscosity is significantly improved by adding the konjac starch and the talc powder, which indicates that the konjac starch and the talc powder can improve the viscosity of the adhesive, so that the thermal expansion coefficient of the adhesive is lower, the shrinkage is smaller, and the mechanical strength of the adhesive can be further enhanced.
According to the comparison of the data of examples 15-17 and example 7 in Table 8, the initial tack and peel strength of the adhesive are increased without significant change in tensile strength and thermal aging resistance by adding the hindered phenol-based antioxidant, konjac starch and talc powder, which indicates that the effect of enhancing the adhesive performance is insignificant when the hindered phenol-based antioxidant, konjac starch and talc powder are combined with each other.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The preparation method of the women's shoes prepared from the natural leather and capable of keeping the three-dimensional state for a long time is characterized by comprising the following steps of: the method comprises the following steps:
step 1), preparing materials for preparing leather shoe upper surfaces, soles, heels and insoles of leather shoes;
step 2), preparing the leather shoe upper surface, which specifically comprises the following steps:
step 2-1), taking a natural leather material, drawing a leather material by using a sample plate which is previously punched, cutting, carrying out hot press molding on the cut natural leather according to a mold, so that a certain inner concave surface is formed on the inner upper surface of each leather shoe, an outer convex surface is formed on the outer upper surface of each leather shoe, and cutting redundant leather material according to the size;
step 2-2), mixing the natural leather filling powder with an adhesive to prepare vamp fillers;
step 2-3), filling the concave surface with vamp fillers, polishing the outer upper surface and the inner upper surface of the leather shoe to be smooth after the vamp fillers are stably formed on the inner upper surface of the leather shoe, and manufacturing a leather shoe upper surface;
step 3), bonding the upper surface of the leather shoe and the sole by using an adhesive to prepare a prefabricated leather shoe;
step 4), drying the prefabricated leather shoes, then pulling the upper, cleaning the dried vamps, and shaping at high temperature after cleaning;
step 5), sequentially carrying out waxing, glue brushing, drying and cooling setting treatment on the surface of the vamp;
step 6), assembling the shoe heel and the shoe pad to obtain a finished leather shoe product;
the adhesive comprises the following components in parts by weight:
45-65 parts of polyether polyol;
1-3 parts of isophorone diisocyanate;
0.4 to 0.8 portion of phenyl propyl dimethyl siloxy silicate;
10-20 parts of graphene oxide;
8-10 parts of dopamine;
4.4-5.6 parts of a thickening agent;
40-60 parts of water.
2. The method for preparing women's shoes capable of maintaining three-dimensional shape permanently using natural leather according to claim 1, wherein: the natural leather filling powder in the step 2-2) is prepared by crushing redundant fine leather materials cut in the step 2-1).
3. The method for preparing women's shoes capable of maintaining three-dimensional shape permanently using natural leather according to claim 1, wherein: the mass ratio of the natural leather filling powder to the adhesive in the step 2-2) is 1: 12-18.
4. The method for preparing women's shoes capable of maintaining three-dimensional shape permanently using natural leather according to claim 1, wherein: and drying the prefabricated leather shoes in the step 4) at the temperature of 40-50 ℃.
5. The method for preparing women's shoes capable of maintaining three-dimensional shape permanently using natural leather according to claim 1, wherein: the adhesive also comprises the following components in parts by weight:
1-3 parts of hydantoin;
1-3 parts of sodium molybdate dihydrate.
6. The method for preparing women's shoes capable of maintaining three-dimensional shape permanently using natural leather according to claim 1, wherein: the adhesive also comprises the following components in parts by weight:
1-2 parts of an antioxidant.
7. The method for preparing women's shoes capable of maintaining three-dimensional shape permanently using natural leather according to any one of claims 1 to 6, wherein: the adhesive also comprises the following components in parts by weight:
9-13 parts of konjak starch;
10-14 parts of talcum powder.
8. The method for preparing women's shoes capable of maintaining three-dimensional shape permanently using natural leather according to claim 1, wherein: the preparation method of the adhesive comprises the following steps:
step a), raw material pretreatment: premixing a thickening agent and water, uniformly stirring, adding dopamine, uniformly stirring, heating to 83-88 ℃, and preserving heat for 3-8 minutes to obtain a first mixture;
step b), mixing polyether polyol, isophorone diisocyanate, phenyl propyl dimethyl siloxy silicate and graphene oxide, uniformly stirring, and heating to 90-110 ℃ while stirring;
step c), mixing the first mixture and the second mixture, uniformly stirring, heating to 150-;
the step a) and the step b) can be carried out simultaneously or not in sequence.
9. The method for manufacturing women's shoes capable of maintaining a three-dimensional shape for a long time using natural leather according to claim 8, wherein: adding dopamine, adding hydantoin, sodium molybdate dihydrate, konjac starch and talcum powder, and continuously stirring at 83-88 ℃ for reacting for 2-3 hours;
an antioxidant is also added in the step b).
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| CN107227138A (en) * | 2017-06-19 | 2017-10-03 | 广州市明治皮具制品有限公司 | A kind of leather Aqueous Adhesives and preparation method thereof |
| CN109330109A (en) * | 2018-11-07 | 2019-02-15 | 温州职业技术学院 | A kind of Chinese-medicine health-care shoes method for producing |
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| DE3437928C2 (en) * | 1984-10-17 | 1986-09-11 | Ferd. Schäfer & Söhne GmbH & Co KG, 6780 Pirmasens | Method and device for manufacturing footwear |
| US7497033B2 (en) * | 2005-08-16 | 2009-03-03 | Nike, Inc. | Article of footwear and method of manufacturing same |
| CN107384264A (en) * | 2017-08-29 | 2017-11-24 | 安徽乐踏鞋业有限公司 | A kind of preparation method of mould proof color inhibition skin shoes-used glue |
| CN107874375B (en) * | 2017-10-09 | 2020-08-21 | 安徽嘉盛鞋业有限公司 | Method for manufacturing leather shoes |
| CN109090768B (en) * | 2018-08-13 | 2020-11-20 | 广州市鸿峥实业有限公司 | Production method of leather shoes with anti-wrinkle function |
| CN111264972A (en) * | 2020-03-16 | 2020-06-12 | 兴业皮革科技股份有限公司 | Leather shoe upper surface made of natural leather and preparation method thereof |
| CN111454686B (en) * | 2020-05-08 | 2021-10-29 | 上海汉司实业有限公司 | Polyurethane adhesive, preparation method thereof and aluminum honeycomb panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107227138A (en) * | 2017-06-19 | 2017-10-03 | 广州市明治皮具制品有限公司 | A kind of leather Aqueous Adhesives and preparation method thereof |
| CN109330109A (en) * | 2018-11-07 | 2019-02-15 | 温州职业技术学院 | A kind of Chinese-medicine health-care shoes method for producing |
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