KR101825554B1 - Method for processing crocodile skin and method for manufacturing bag using the same - Google Patents

Abstract

The present invention relates to a process for manufacturing a crocodile leather which is capable of improving the elasticity and reinforcement of the crocodile leather while improving the volume while improving the gloss of the crocodile leather, The present invention relates to a method of processing a crocodile leather so that the crocodile leather is submerged at a water temperature to prevent shrinkage or relaxation of the leather,
A method of processing a crocodile leather according to the present invention includes a preparation step (S1) of preparing a crocodile leather; A first cutting step (S2) of cutting the crocodile leather (10) by a part including a neck, a trunk, a leg, and a tail; A water immersion step (S3) of immersing the cut crocodile leather (10) in water at 20 to 22 DEG C for 10 to 48 hours; A wrinkle improving step (S4) of fixing the rim of the crocodile leather (10) to which the immersion is completed by fixing the ridges of the leather to be stretched; A first drying step (S5) of drying the crocodile leather (10) with the wrinkles improved at a temperature of 25 to 27 DEG C for 24 to 48 hours; A thickness adjusting step (S6) of adjusting the thickness of the primarily dried crocodile leather (10) to be cut to a thickness of 0.4 to 0.6 mm; A pressing step (S7) of applying the heat and the press pressure to the crocodile leather (10) adjusted in thickness to make it flat; A grazing step (S8) of polishing the crocodile leather (10) by using heat generated by rubbing the claws (10); A second drying step (S9) of drying the crocodile leather (10) having been polished to a moisture content of 1% or less in a drying chamber; A volume forming step (S10) of placing the crocodile leather (10) dried on the soleplate to give a three-dimensional feeling to the surface of the crocodile leather; A secondary cutting step S11 of cutting the crocodile leather 10 having the volume formed therein to correspond to the shape of the product; A reinforcing material 12 of a nonwoven fabric material is adhered to the inner surface 10a of the crocodile skin 10 so as to adhere to the inner surface 10a of the crocodile leather 10 with an adhesive so that the shape of the reinforcing material 12 corresponds to one side of the reinforcing material 12. [ And reinforcing step S12 of adhering the cushioning material 15 with an adhesive and attaching the hard paper 17 to the inner projecting portion 16 where the pattern of the crocodile leather 10 protrudes with an adhesive agent .

Description

TECHNICAL FIELD The present invention relates to a crocodile leather processing method and a bag manufacturing method using the same,

The present invention relates to a method of processing a crocodile leather and a method of manufacturing a bag using the crocodile leather. More particularly, the present invention relates to a crocodile leather processing method, Improving the gloss of the crocodile leather, as well as preventing the shrinkage or relaxation of the crocodile leather by submerging the crocodile leather at low temperature water temperature and improving the texture of the crocodile leather And a bag manufacturing method using the same.

In general, leather fabrics are widely used as fabrics for bags, shoes, clothing, etc., and can be dyed or printed in various colors and patterns on tanned hides.

The process of manufacturing such a leather fabric will be briefly described as follows.

First, the leather fabrics to be produced are selected, and buffing work is performed to soften the surface of the leather by removing fur and by-product fat attached to the fabric. The hair and by-product fat are removed and the first finished fabric is coated on the surface and then dried at high temperature. The dried fabric is again selected to perform the second buffing operation. After the second buffing operation is finished, the fabric is treated with chemicals and finished with leather fabric which can be produced by the product.

On the other hand, crocodile leather is made of 100% natural materials and is dyed to give a glossy lucid crocodile leather (Lucido) and opaque crocodile leather (Opaco), which has a soft and natural texture compared with glossy crocodile leather, and soft, It can be divided into crocodile leather (Silk soft).

The processing method of crocodile leather is cutting the leather around the backbone and using only the central part of the front and back of the bag in the center of the bag, the center cut method using only the beautiful part of the center of symmetry, There is a side cut method in which cutting is performed irrespective of the center symmetry pattern.

As a prior art, as disclosed in Korean Patent Registration No. 10-0177913 entitled " Method of processing leather surface and processed leather produced thereby "(Registered on November 19, 1998), the outer surface of leather is worn by wear means A plurality of sanding portions having the same inclination angle as that of the both end inclined contacting surfaces are formed at regular intervals, and the sanding portions are sandwiched by sandpaper portions constituting independent vertical sanding portions, So that the outer surface of the leather passing through the space between the vertical sanding portions is maintained in a raw form so that the outer surface of the leather is processed .

In this case, it is merely a method of processing the outer surface of the leather. Since the processing method of the ordinary crocodile leather is difficult, the animal tissue such as the protein component and the fat component leaks from the inside of the crocodile leather when it is made into a product, As a result, the quality of the product is significantly lowered when it is oxidized and produced as a product.

In addition, during the process of manufacturing a product using crocodile leather, the adhesive used to adhere the crocodile leather and the endothelium to the finished product can flow to the leather surface, and the crotch leather and the inner skin of the leather (inner leather) There is a problem that the adhesive is oxidized in the inside due to the lack of air permeability of the reinforcing steel for padding to reinforce, and odor (smell that pierces the nose of the new bag) can be generated.

In addition, when the reinforcing steel is bonded to the crocodile leather, the tensile strength is greater than the tensile strength, which causes the flexibility and stiffness of the leather when folded or folded.

As another prior art related to the conventional leather processing method for solving this problem, crocodile leather is selected and cut in accordance with Korean Patent Registration No. 10-1111725 "Processing Method of Crocodile Leather" (registered on January 26, 2012) ; Dissolving the animal tissue distributed in the cut crocodile hides of the cut and watering to flatten the tissue; A step of shaving off the crocodile leather in which the water work is completed to a predetermined thickness; Fixing and drying the crocodile leather to be avoided; Performing a bomb operation to add a three-dimensional effect to the surface of the dried crocodile leather; And attaching perforated fibers formed by repeating holes of a predetermined size vertically and horizontally on the inner skin (inner leather) of the crocodile leather that has been subjected to the bomb operation; .

In this case, even if the perforated fiber is attached to the inner skin, since the patterned portion of the crocodile leather after the bombing operation is formed by the concave-convex structure having the volume, the space portion for venting is formed between the protruding portion of the pattern having the volume and the perforated fiber, There is a possibility that the elasticity of the resin is deteriorated.

Further, since the thickness of the crocodile leather that has undergone the avoidance process is made to be a thickness of 0.70 to 0.90, the crocodile leather with the perforated fibers is insufficiently flexible because the thickness of the leather is thick after being avoided, There is a concern.

Korean Patent Registration No. 10-0177913 entitled " Method of Processing Leather Surface and Processed Leather Produced Therefrom "(registered on November 19, 1998) Korean Patent Registration No. 10-1111725 "Processing Method of Crocodile Leather" (Registration Date: Jan. 26, 2012)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and its object is to provide a crocodile leather processing apparatus and a crocodile leather processing method which can improve elasticity and reinforcement, And a method of manufacturing a crocodile leather having improved structure so as to improve the gloss of the crocodile leather, and a method of manufacturing a bag using the same.

Another object of the present invention is to provide a method of processing crocodile leather improved in that crocodile leather is submerged at a low temperature water temperature to prevent shrinkage or relaxation of leather, .

In order to accomplish the above object, the present invention provides a method for preparing a crocodile leather, A first cutting step of cutting the crocodile leather by a portion including a neck, a trunk, a leg, and a tail; A step of immersing the cut crocodile leather in water at 20 to 22 DEG C for 10 to 48 hours; A wrinkle removing step of fixing the rim of the crocodile leather in which the immersion is completed by fixing the ridges of the leather to be spread; A first drying step of drying the croaker with improved wrinkles at a temperature of 25 to 27 DEG C for 24 to 48 hours; A thickness adjusting step of adjusting the thickness of the primary dried crocodile leather to be cut to a thickness of 0.4 to 0.6 mm; A pressing step of applying heat and press pressure to the thickness-adjusted crocodile leather to make it flat; A glazing step of applying a gloss treatment to the crocodile leather using heat generated by rubbing the claws; A second drying step of drying the gloss-treated crocodile leather to a moisture content of 1% or less in a drying chamber; A volume molding step of placing the secondarily dried crocodile leather on a soleplate to give a three-dimensional feeling to the surface of the crocodile leather; A secondary cutting step of cutting the crocodile leather formed with the volume so as to correspond to the product shape; And a cushioning material corresponding to the shape of the reinforcing material is adhered to the one side of the reinforcing material with an adhesive so that the pattern of the crocodile leather protrudes And a reinforcing step of bonding the hard paper to the inner projecting part by an adhesive.

The wrinkle improving step is characterized in that the edges of the crocodile leather are fixed by wooden boards.

The temperature of the heat in the pressing step is 110 DEG C and the pressing pressure is 300 kgf / cm < 2 >.

And the temperature of the drying chamber in the secondary drying step is 80 ° C.

In the volume molding step, the secondarily dried crocodile leather is put on a hot plate at 300 DEG C to mold the contoured crocodile leather so as to save the volume of the pattern.

Another characteristic element of the present invention is a method for manufacturing a bag of crocodile leather, which comprises crocodile leather fabricated by the above-described processing method, which is manufactured into a bag, and then a varnish mixed with a varnish and a thinner at a ratio of 7: Spraying the mixture to maintain the gloss of the surface of the bag, and drying in a drying chamber at 35 ° C.

The method of processing crocodile leather according to the present invention can prevent water shrinkage or relaxation while ensuring flexibility of leather by immersing the water temperature of water in water at a low temperature of 20 to 22 ° C during flooding work and by applying heat and pressure, Is dried to minimize the water content through the secondary drying process, and the thickness of the leather is avoided to a thickness of 0.4 to 0.6 mm, thereby improving the volume formability of the leather.

Further, according to the present invention, the reinforcing material, the cushioning material, and the hard paper are attached to the crocodile inner skin through the reinforcing step, so that the crocodile leather is advantageously reinforced while imparting permeability and giving elasticity.

The bag manufactured through the method of manufacturing the crocodile leather bag of the present invention has an advantage that it can keep the light of the leather that has been subjected to the grazing and volume molding work by applying it to the leather surface using a special brightener.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing a processing method of a crocodile leather according to the present invention in a rough sequence; Fig.
Fig. 2 is a process flow diagram schematically showing a process for producing a crocodile leather bag according to the present invention; Fig.
3 is a cross-sectional view showing a crocodile reinforcement structure that has undergone the reinforcing step of the present invention.

The method for processing crocodile leather according to the present invention comprises, as shown in Fig. 1, a preparation step (S1) for preparing crocodile leather; A first cutting step (S2) of cutting the crocodile leather (10) by a part including a neck, a trunk, a leg, and a tail; A water immersion step (S3) of immersing the cut crocodile leather (10) in water at 20 to 22 DEG C for 10 to 48 hours; A wrinkle improving step (S4) of fixing the rim of the crocodile leather (10) to which the immersion is completed by fixing the ridges of the leather to be stretched; A first drying step (S5) of drying the crocodile leather (10) with the wrinkles improved at a temperature of 25 to 27 DEG C for 24 to 48 hours; A thickness adjusting step (S6) of adjusting the thickness of the primarily dried crocodile leather (10) to be cut to a thickness of 0.4 to 0.6 mm; A pressing step (S7) of applying the heat and the press pressure to the crocodile leather (10) adjusted in thickness to make it flat; A grazing step (S8) of polishing the crocodile leather (10) by using heat generated by rubbing the claws (10); A second drying step (S9) of drying the crocodile leather (10) having been polished to a moisture content of 1% or less in a drying chamber; A volume forming step (S10) of placing the crocodile leather (10) dried on the soleplate to give a three-dimensional feeling to the surface of the crocodile leather; A secondary cutting step S11 of cutting the crocodile leather 10 having the volume formed therein to correspond to the shape of the product; A reinforcing material 12 of a nonwoven fabric material is adhered to the inner surface 10a of the crocodile skin 10 so as to adhere to the inner surface 10a of the crocodile leather 10 with an adhesive so that the shape of the reinforcing material 12 corresponds to one side of the reinforcing material 12. [ And a reinforcing step (S12) of attaching the cushioning material (15) with an adhesive and attaching the hard paper (17) to the inner projecting part (16) where the pattern of the crocodile leather (10) protrudes with an adhesive.

The preparation step (S1) classifies the crocodile leather (10) by size and color and imports and receives it.

The first cutting step S2 cuts the crocodile leather 10 in four equal parts for each part including the neck, trunk, leg, and tail.

The immersion step (S3) immerses the cut crocodile leather (10) in water at 20 to 22 DEG C for 10 to 48 hours.

The flooding operation is to remove the impurities of the leather and to secure the flexibility of the leather. When the temperature of the water exceeds 22 캜, the leather may be relaxed. If the temperature of the water is lower than 20 캜, shrinkage of the leather may occur .

If the immersion time of the leather is less than 10 hours, the leather may be broken or wrinkled during the production process, and if it exceeds 48 hours, the leather may be loosened.

The wrinkle-improving step S4 fixes the edges of the immersed leather to the wooden plate, and fixes the folded wrinkles of the crocodile leather 10 by unfolding.

In the primary drying step S5, the crocodile leather 10 with wrinkles is dried at room temperature (25 to 27 DEG C) for 24 to 48 hours.

At this time, if the primary drying time is less than 24 hours, the leather may become hard, and if it is dried for more than 48 hours, the leather may be cracked.

The thickness adjustment step (S6) is a process of regularly cutting a 1.2 mm original leather to a thickness of 0.4 to 0.6 mm using a leather avoiding machine. When the thickness is less than 0.4 mm, the leather may be torn, If it is thicker, there is a fear that the volume will not be properly stored in the subsequent volume forming step (S10).

The pressing step S7 is a work for flattening the crocodile leather 10 by applying a pressing pressure of 300 kgf / cm2 at a high temperature of 110 deg. C and removing water remaining in the crocodile leather 10, S10) so that the volume can survive.

The glazing step (S8) is performed by using a frictional heat generated by rubbing the leather on a ridge, so as to brighten the light of the leather. Light differs depending on the rubbing frequency and rubbing direction.

In the secondary drying step (S9), the secondary drying of the crocodile leather (10) is performed in a drying chamber at 80 DEG C so that the moisture content is 1% or less.

In the volume forming step S10, the crocodile leather 10 dried on the hot plate at 300 DEG C is raised, and the volume of the instantaneously shrunk portion is utilized to form the pattern of the crocodile itself voluminously.

In the secondary cutting step S11, the crocodile leather 10 in which the volume is formed is cut to correspond to the product shape with reference to the product drawings such as a bag.

3, the reinforcing material 12 of a non-woven material having good breathability is adhered to the inner surface 10a of the crocodile leather 10 by using an adhesive, and the reinforcing material 12 is attached to the inner surface 10a of the crocodile skin 10, A cushioning material 15 corresponding to the shape of the reinforcing material 12 is attached to one side of the crocodile leather 10 with an adhesive and the hard paper 17 is adhered to an inner protruding portion 16 protruding from the pattern of the crocodile leather 10 with an adhesive .

At this time, since the hard paper 17 is adhered to the inner projecting portion 16 with an adhesive, space can be formed between the cushioning material 15 and the hard paper 17 to improve air permeability, The cushioning material 15 is interposed between the elastic cushion 17 and elasticity of the leather.

The processing method of the present invention crocodile leather having such a process can prevent the shrinkage or relaxation of leather while ensuring the flexibility of leather by immersing the water temperature of the water at a low temperature of 20 to 22 DEG C during flooding, To remove moisture from the crocodile leather 10 and to dry the crocodile leather 10 to minimize the moisture content through a secondary drying process and to avoid the thickness of the leather to a thickness of 0.4 to 0.6 mm to improve the volume formability of the leather .

The reinforcement 12, the cushion material 15 and the hard paper 17 are attached to the inner skin 10a of the crocodile leather 10 through the reinforcing step S12 so as to give the crocodile leather breathability, So that it can be strengthened firmly.

The method for manufacturing a crocodile leather bag 10 manufactured by using the crocodile leather 10 processed through the method of processing the crocodile leather 10 comprises the steps of preparing the crocodile leather 10 described above, Sewing crocodile leather that has been processed through steps such as primary cutting, submerging, wrinkle improvement, primary drying, leather thickness adjustment, pressing, grazing, secondary drying, volume molding, secondary cutting and reinforcement (S13). Then, a gloss agent is applied to the surface of the manufactured bag product by spraying using a manual spray gun (S15), and the gloss-treated product is dried in a low temperature drying room at 35 DEG C (S16) and then shipped (S18).

If the ratio of the varnishes is too high, the leather may become hard and the surface may be cracked. When the ratio of the thinner is too high, the glossiness is deteriorated. Therefore, varnish 7: Lt; 3 >.

In this case, a first inspection (S14) for removing sewing thread, foreign matter, adhesive and the like occurred at the first inspection after production of the bag product is performed, and a secondary inspection After the process (S17), it is shipped.

Accordingly, the crocodile leather bag 10 of the present invention has an advantage that it can maintain the light of the leather that has undergone the grazing and volume molding work by applying it to the leather surface using a special brightener.

10: Alligator leather 10a: (Alligator leather) Endothelium
12: stiffener 15: cushioning material
16: Inner projecting part 17: Hard paper

Claims (6)

A preparation step (S1) of preparing a crocodile leather;
A first cutting step (S2) of cutting the crocodile leather (10) by a part including a neck, a trunk, a leg, and a tail;
A water immersion step (S3) of immersing the cut crocodile leather (10) in water at 20 to 22 DEG C for 10 to 48 hours;
A wrinkle improving step (S4) of fixing the rim of the crocodile leather (10) to which the immersion is completed by fixing the ridges of the leather to be stretched;
A first drying step (S5) of drying the crocodile leather (10) with the wrinkles improved at a temperature of 25 to 27 DEG C for 24 to 48 hours;
A thickness adjusting step (S6) of adjusting the thickness of the primarily dried crocodile leather (10) to be cut to a thickness of 0.4 to 0.6 mm;
A pressing step (S7) of applying the heat and the press pressure to the crocodile leather (10) adjusted in thickness to make it flat;
A grazing step (S8) of polishing the crocodile leather (10) by using heat generated by rubbing the claws (10);
A second drying step (S9) of drying the crocodile leather (10) having been polished to a moisture content of 1% or less in a drying chamber;
A volume forming step (S10) of placing the crocodile leather (10) dried on the soleplate to give a three-dimensional feeling to the surface of the crocodile leather;
A secondary cutting step S11 of cutting the crocodile leather 10 having the volume formed therein to correspond to the shape of the product;
A reinforcing material 12 of a nonwoven fabric material is adhered to the inner surface 10a of the crocodile skin 10 so as to adhere to the inner surface 10a of the crocodile leather 10 with an adhesive so that the shape of the reinforcing material 12 corresponds to one side of the reinforcing material 12. [ And a reinforcing step (S12) of attaching the cushioning material (15) with an adhesive and attaching the hard paper (17) to the inner projecting part (16) where the pattern of the crocodile leather (10) protrudes with an adhesive Processing method of crocodile leather. delete The method according to claim 1,
Wherein the wrinkle improving step (S4) fixes the rim of the crocodile leather (10) with a wooden plate. The method according to claim 1,
Wherein the temperature of the drying chamber in the secondary drying step (S9) is 80 占 폚. The method according to claim 1,
Wherein the volume molding step (S10) is carried out by placing the secondarily dried crocodile leather (10) on a hot plate at 300 캜 to form a patterned volume of the crocodile leather (10) which has been contracted. After the crocodile leather processed by the processing method of claim 1 was made into a bag, the gloss of the varnish and the thinner mixed at a ratio of 7: 3 was sprayed to the surface side of the bag to maintain the gloss of the bag surface, And drying the crocodile leather bag.

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