KR101594016B1 - Manufacturing method of shoes sole and shoes sole using the same - Google Patents
Manufacturing method of shoes sole and shoes sole using the same Download PDFInfo
- Publication number
- KR101594016B1 KR101594016B1 KR1020150145969A KR20150145969A KR101594016B1 KR 101594016 B1 KR101594016 B1 KR 101594016B1 KR 1020150145969 A KR1020150145969 A KR 1020150145969A KR 20150145969 A KR20150145969 A KR 20150145969A KR 101594016 B1 KR101594016 B1 KR 101594016B1
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- parts
- sole
- foaming
- mold
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/122—Soles
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
More particularly, the present invention relates to a method of manufacturing a sole and a shoe sole, and more particularly, to a sole comprising a rubber sheet and a compound for foaming, 1 size and at the same time the middle and sole are adhered integrally without the adhesive, so that the environment for working environment can be realized while simplifying the manufacturing process of the sole, and also the foaming agent for vertical expansion contained in the compound for foaming middle , The natural rubber is expanded only vertically and foamed to a size of 1: 1 with the mold, whereby the weight of the sole can be remarkably reduced while maintaining high elasticity (excellent compression durability) semi-permanently. To a shoe sole.
Description
The present invention simplifies the manufacturing process of the sole by allowing the sole and foam compounding material to be placed together in the mold, foaming the sole in a 1: 1 ratio with the mold, and bonding the sole and sole in one piece without adhesive. A method of manufacturing a shoe sole, and a shoe sole manufactured by the method, which are capable of realizing an environmentally friendly working environment while maintaining high elasticity (excellent compression durability) .
In general, shoes are worn to protect the foot area of a human body. Various types and types of shoes have been manufactured and sold. Typically, however, the upper part protects the foot and the ankle area and the upper part protects the sole, And a sole for improving the planarity by increasing the frictional force and mitigating the impact applied to the sole when walking.
The shoe sole is made of a rubber, a foamed resin or a sponge material having excellent buffering ability so as to elastically disperse and support a load of a human body during walking, and a midsole made of a sponge material, And an outsole made of a rubber material.
In general, the outsole is generally manufactured by molding a sole by pressing a rubber sheet into a metal mold for forming a sole at a high temperature and a high pressure, and then, in order to increase the adhesion area with the middlesole, The formed sole is washed with an aqueous alkaline detergent (pH 10-12) for 5 to 10 minutes using a separate washing machine. In this case, instead of the aqueous alkaline cleaning agent, a cleaning process using an acidic cleaning agent diluted with water may be performed. Thereafter, an aqueous or oily primer containing acetone is applied on the surface of the sole that has undergone the cleaning process so that the adhesive can be smoothly applied, and then dried, followed by applying an adhesive, .
Next, a general manufacturing method of a midsole is to add a raw material (usually EVA, PU, etc.) into a press phylon mold or a compressed molded phylon (CMP) The preform is foam-molded, and the formed mold is inserted into a separate pyron mold to complete the shape of the pyron mold. In this case, the process of molding the middle is generally made of three or two steps. Specifically, the raw material of biscuit is foamed, foamed by about 190% larger than the actual size of the middle, and then forced into the pier mold And then press-formed again to mold into an actual-sized midsole. Thereafter, the duo is washed with water at 40 to 60 DEG C for 5 to 10 minutes using a washing machine. Next, the midsole is coated with UV (ultra violet) primer and UV irradiation to modify the adhesive surface so that adhesion between the sole and the midsole can be smoothly performed. Thereafter, an aqueous primer and an adhesive are applied to the surface of the midsole, followed by drying to produce a midsole.
However, the conventional method for manufacturing the sole has a problem that the manufacturing process is complicated and the working environment is poor. For example, when the buffing process for roughening the surface of the shoe sole to increase the adhesion area with the midsole in the process of manufacturing the shoe sole causes rubber dust which is harmful to the human body, the working environment is deteriorated and the foreign matter It is necessary to use an aqueous alkaline detergent (or diluted acidic detergent diluted with water) using a separate washing machine in order to remove excess amount of equipment, increase the shoe manufacturing process, There was a problem that needed.
In addition, UV primer, UV irradiation, a process of applying a primer containing acetone, and a process of applying an adhesive have been further required so that adhesion can be smoothly performed in the process of manufacturing the sole and the middle, There is a problem that not only a lot of workforce is required but also an increase in the shoe manufacturing process (that is, a primer coating process and an adhering process) increases the production cost.
In addition, the solvents used for the UV primer, the UV irradiation process, and the process of the primer containing acetone may not only damage the eyes of workers but may also cause skin irritation and may cause respiratory system irritation and adverse effects on the lungs There was a problem that the working environment was extremely deteriorated.
Furthermore, when the sole and the middle are separately molded and bonded to each other, many processes such as a cleaning step, a primer application step, an adhesive application step, a drying step, and the like are required, resulting in a decrease in productivity and a large amount of raw materials and workforce Thereby raising the cost of the product.
In addition to the above-mentioned problems, the conventional pearl midsole has a heavy weight and the cells of the foam are pressed against each other when worn for a certain period of time, so that the elasticity and the restoring force are very poor or lost.
To solve this problem, Patent Document 1 proposes a shoe manufacturing method using an adhesive film capable of simultaneously molding a sole and a sole using an adhesive film, so that a shoe sole can be manufactured without a separate adhering step or a washing step However, in the case of the above-described Patent Document 1, it is possible to realize some effects such as shortening the manufacturing process partially. However, the manufacturing process is still not simple, and in particular, the heavy weight and the insufficient elastic force There was a problem.
In order to solve the above-mentioned problems, the present invention is to improve "a composition for foamed insole and a method for manufacturing foamed insole using the foamed insole," filed by the applicant of the present invention (Korean Patent Application No. 10-2015-0114768) So that the middle and the sole can be adhered integrally without the adhesive, thereby simplifying the manufacturing process of the sole of the shoe sole. So that an environment friendly working environment can be realized.
In addition, since the natural rubber is expanded vertically only by the vertical expanding foaming agent contained in the foam medium for foaming, and it is foamed with the mold in a size of 1: 1, it is possible to maintain high elasticity (excellent compression durability) The present invention has a further problem in that it can significantly reduce the amount of water.
A method of making a sole, comprising the steps of: (A100) preparing a formulation for a foam midsole; Preparing the formulation in sheet form and cutting it into a size corresponding to the mold size (A200); Placing the sole on the mold (A300); And a step (A400) of placing the cut blend on the sole, and then pressing and crosslinking and foaming the blend (A400).
Another object of the present invention is to provide a sole that is manufactured by the above method and in which the
In the step A100, it is preferable to mix the foaming agent for vertical expansion and the additive for foaming with respect to 100 parts by weight of the natural rubber to prepare a foamed foaming compound.
The blowing agent for vertical expansion may comprise 1 to 5 parts by weight of a blowing agent, 2 to 20 parts by weight of flour, 1 to 10 parts by weight of sodium bicarbonate, 2 to 10 parts by weight of loess, 1 to 10 parts by weight of oxidative calcined calcium, and 1 to 10 parts by weight of a homogeneous compounding agent.
The additive for the foam preferably comprises 2 to 10 parts by weight of zincation, 2 to 10 parts by weight of stearic acid, 10 to 50 parts by weight of white carbon, 5 to 20 parts by weight of calcium carbonate, 5 to 20 parts by weight of magnesium carbonate, 2 to 15 parts by weight of an accelerator, 1 to 10 parts by weight of a process oil and 1 to 3 parts by weight of sulfur.
Meanwhile, in step A400, it is preferable to press at a pressure of 80 to 100 kg / cm 2 at 140 to 160 ° C for crosslinking and foaming.
According to the present invention, the sole made of a rubber sheet and the compound for foaming middle are put together and pressed, whereby the middle window is foamed with the metal mold at a size of 1: 1 and the midsole and the sole are bonded integrally without the adhesive, The natural rubber is expanded vertically only by the foaming agent for vertical expansion contained in the formulation for the foaming middle so that it is foamed at a size of 1: 1 with the mold, Compression permanent dullness) can be maintained semi-permanently and its weight can be significantly reduced.
1 is a flow chart showing a method of manufacturing a sole according to the present invention;
2 is a photograph (a: upper surface, b: lower surface, c: side enlargement) of a sole according to the present invention,
The present invention relates to a method for manufacturing a sole of shoes and a sole for shoes manufactured by this method, and only the parts necessary for understanding the technical structure of the present invention will be explained, and the description of the other parts will be omitted so as not to disturb the gist of the present invention .
Hereinafter, a method for manufacturing the sole according to the present invention and a sole made by the method will be described in detail.
As shown in FIG. 1, the method for manufacturing a sole according to the present invention comprises the steps of: (A100) preparing a foamed midsole compound; preparing the foamed sheet in a sheet shape and cutting the foamed sheet into a size corresponding to the mold size (A300) placing the sole on the mold, and a step (A400) of placing the cut compound on the sole, and pressing and crosslinking and foaming the sole on the sole.
The step A100 is a step of preparing a compound for foaming middle, kneading and blending the foaming agent for vertical expansion and the additive for foam with a kneader and a roll mill in 100 parts by weight of natural rubber, A formulation for the foaming medium is prepared.
The natural rubber is a base material of the foamed core according to the present invention. In the present invention, a base material composed of 100% natural rubber is used. Such a natural rubber is foamable in a size of 1: 1 with a mold by a foaming agent for vertical expansion to be described later It is possible to maintain the high elasticity (excellent compression permanent stiffness) semi-permanently.
In addition, the natural rubber, in addition to the homogeneous compounding agent to be described later, enables the sole to be adhered to the midsole without an adhesive.
Unlike a conventional foaming agent, the foaming agent for vertical expansion can be foamed only vertically, so that the foaming agent can be foamed at a size of 1: 1 with a mold as shown in FIG. 2, .
More specifically, the blowing agent for vertical expansion may comprise 1 to 5 parts by weight of a foaming agent, 2 to 20 parts by weight of wheat flour, 1 to 10 parts by weight of bicarbonate, 2 to 10 parts by weight of loess, 1 to 10 parts by weight of calcined calcium oxide and 1 to 10 parts by weight of a homogeneous compounding agent. By the flour, the sodium bicarbonate, the yellow loess, the calcined calcium and the homogeneous compounding agent as described above, physical changes To a chemical change, thereby inducing only vertical expansion and thus foaming to a size of 1: 1 with a mold.
On the other hand, the foaming agent is an azodicarbonamide (AC) foaming agent. When the amount of the foaming agent is less than 1 part by weight, foaming itself may not be performed properly. When the amount is more than 5 parts by weight, The foaming may be difficult, but the present invention is not limited thereto, and may be variably applied depending on the kind of the midsole and the use environment.
The flour, the sodium bicarbonate, the yellow loess, the calcined calcium, and the homogeneous compounding agent are added in order to induce only the vertical expansion upon expansion due to the foaming agent. The calcined calcium is added to calcined calcium And the homogeneous compounding agent uses rosin.
On the other hand, when the content of the flour, the sodium bicarbonate, the yellow loess, the calcined calcium, and the homogeneous compounding agent is out of the above range, the vertical expansion may not be properly induced. However, And the like.
As the additive for the foam, generally known all kinds of additives that can be applied in the production of the foam can be used. For example, when the content of the natural rubber is 100 parts by weight, 2 to 10 parts by weight of zinc, 2 to 10 parts by weight of
More specifically, the zincation and stearic acid have a cross-linking activity. White carbon, calcium carbonate and magnesium carbonate are used as fillers to improve the elasticity and physical properties of the midsole, and accelerators (2-mercapto, Dibenzothiazyl disulfide, aldehyde amine, etc.) can act to shorten the time by further activating the crosslinking by sulfur, which is a crosslinking agent to be described later, and can be used as a process oil (paraffin, naphthene, etc.) ) Improves the workability by controlling the melt viscosity of the rubber, and improves physical properties such as aging resistance, moisture resistance and volume feeling of the product. Sulfur is used as a crosslinking agent. The additives listed above can be used in combination with a known additive for foam And is not limited to these types, and it is generally possible to add all known kinds of additives which can be applied in the production of the foam Can be used.
On the other hand, the content of the additive for each foam is within the range already known for the production of foam, so its critical meaning is omitted. However, the present invention is not limited to the above range, but may be applied variably depending on the kind of the midsole and the use environment.
In step A200, the blend is prepared in a sheet form using a calender and cut to a size corresponding to the mold size. In step S300, a sole made of a rubber sheet is placed on the mold, and the sole to be adhered to the midsole is placed in the mold. At this time, the rubber sheet may be any kind of materials commonly used for sole such as natural rubber or synthetic rubber.
The step A400 is a step of pressing and cross-linking and foaming the cut compound after placing the cut compound in the sole at a pressure of 80 to 100 kg / cm 2 at 140 to 160 ° C. At this time, the press temperature and pressure are not limited to the above range but may be variably applied depending on the kind of the middle and sole, the use environment, and the press time may be variably applied depending on the type of the middle and sole.
That is, while the natural rubber is vertically expanded by the vertical expansion foaming agent, the foam can be foamed with the metal mold in a ratio of 1: 1, thereby maintaining the high elasticity semi-permanently while significantly reducing its weight. As shown in FIG. 2, the sole 20 is integrally adhered and formed on the upper surface of the
Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited by the following examples.
1. Manufacture of sole
(Example 1)
2 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 10 parts by weight of white carbon, 5 parts by weight of calcium carbonate, 5 parts by weight of magnesium carbonate, 1 part by weight of 2-mercapto accelerator, 1 part by weight of sulfur compound accelerator, 0.1 part by weight of aldehyde amine promoter, 1 part by weight of paraffin oil and 1 part by weight of sulfur, 1 part by weight of azodicarbonamide foaming agent, 2 parts by weight of flour, 1 part by weight of sodium bicarbonate, 2 parts by weight of calcium carbonate, 1 part by weight of calcined calcium oxide and 1 part by weight of rosin as a homogeneous compounding agent were blended with a kneader and a roll mill (A100), and then the mixture was shaped into a sheet using a calender, (A200), placing a sole made of a natural rubber sheet in the mold (A300), placing the cut compound in the sole, At a pressure of 100 kg / cm 2, while cross-linked by a press (A400) the midsole mold in a 1: 1 while at the same time the foam in size were prepared by bonding a sole molded in a sole piece with.
(Example 2)
10 parts by weight of zinc nitrate, 10 parts by weight of stearic acid, 50 parts by weight of white carbon, 20 parts by weight of calcium carbonate, 20 parts by weight of magnesium carbonate, 3 parts by weight of 2-mercapto accelerator, 5 parts by weight of a sulfur compound accelerator, 5 parts by weight of an aldehyde amine promoter, 10 parts by weight of paraffin oil and 3 parts by weight of sulfur, 5 parts by weight of an azodicarbonamide blowing agent, 20 parts by weight of flour, 10 parts by weight of sodium bicarbonate, 10 parts by weight of calcium oxide and 10 parts by weight of rosin as a homogenous compounding agent were blended by using a kneader and a roll mill (A100), and then a calender was used to make a sheet, Cutting to the corresponding size (A200), placing a sole made of a natural rubber sheet in the mold (A300), placing the cut compound in the sole, (A400) at a pressure of 80 kg / cm < 2 > at 0 [deg.] C to crosslink the midsole with the mold at a ratio of 1: 1, and integrally formed with the outsole to form a sole.
(Comparative Example 1)
Except that ethylene vinyl acetate (EVA) was used instead of natural rubber in the composition of the midsole and foaming was performed without using flour, sodium bicarbonate, yellow soil and calcined calcium to prepare a midsole. In addition, in the process, the sole was placed in a mold and the foaming half was first made into a pier mold without pressing with the sheet-like compound, and the sole was separately bonded using a thermoplastic polyurethane adhesive.
(Comparative Example 2)
Polyurethane (PU) was used instead of natural rubber in the composition of the midsole and foam was produced by using foaming without using flour, sodium bicarbonate, yellow soil and calcined calcium. In addition, in the process, the sole was placed in a mold and the foaming half was first made into a pier mold without pressing with the sheet-like compound, and the sole was separately bonded using a thermoplastic polyurethane adhesive.
2. Evaluation of sole
(1) Elasticity and resilience (Compression Permanent Rowing)
The compression set length was measured by KS M 6518 (physical test method for vulcanized rubber, 2006 / test condition: 50 ° C, 50% compression condition for 6 hours). The results are shown in Table 1 below.
(2) Weight
The results are shown in Table 1 below.
As shown in Table 1, the shoe sole according to the embodiment of the present invention has a high elasticity (excellent compression set stiffness) as compared with the shoe sole according to the comparative example, and its weight is remarkably low.
As described above, the method for manufacturing the sole according to the present invention and the sole made by this method have been described by way of the above-mentioned preferred embodiments and their superiority has been confirmed. However, those skilled in the art will appreciate that, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
10: midsole 20: outsole
Claims (6)
(A100) preparing a formulation for a foaming medium;
Preparing the formulation in sheet form and cutting it into a size corresponding to the mold size (A200);
Placing the sole on the mold (A300); And
And a step (A400) of placing the cut compound in the sole and pressing and crosslinking and foaming the same,
In the step A100, the foaming agent for vertical expansion and the additive for foam are mixed with 100 parts by weight of the natural rubber to prepare a foamed foaming compound,
The blowing agent for vertical expansion according to claim 1, wherein the foaming agent for vertical expansion comprises 1 to 5 parts by weight of a foaming agent, 2 to 20 parts by weight of flour, 1 to 10 parts by weight of sodium bicarbonate, 2 to 10 parts by weight of loess, 1 to 10 parts by weight of calcium and 1 to 10 parts by weight of a homogeneous compounding agent,
Wherein the additive for foam comprises 2 to 10 parts by weight of zinc oxide, 2 to 10 parts by weight of stearic acid, 10 to 50 parts by weight of white carbon, 5 to 20 parts by weight of calcium carbonate, 5 to 20 parts by weight of an accelerator, 2 to 15 parts by weight of an accelerator, 1 to 10 parts by weight of a process oil and 1 to 3 parts by weight of sulfur.
In step A400,
And the mixture is pressed at 140 to 160 DEG C under a pressure of 80 to 100 kg / cm < 2 > for crosslinking and foaming.
Characterized in that the midsole (10) and the sole (20) are integrally molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150145969A KR101594016B1 (en) | 2015-10-20 | 2015-10-20 | Manufacturing method of shoes sole and shoes sole using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150145969A KR101594016B1 (en) | 2015-10-20 | 2015-10-20 | Manufacturing method of shoes sole and shoes sole using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR101594016B1 true KR101594016B1 (en) | 2016-02-15 |
Family
ID=55357511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150145969A KR101594016B1 (en) | 2015-10-20 | 2015-10-20 | Manufacturing method of shoes sole and shoes sole using the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101594016B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019194590A1 (en) * | 2018-04-04 | 2019-10-10 | 화인케미칼 주식회사 | Method for manufacturing shoe sole having multiple colors |
| KR102179732B1 (en) * | 2019-09-02 | 2020-11-17 | 한국신발피혁연구원 | Assembling method of shoes sole and shoes sole using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101566947B1 (en) * | 2015-08-13 | 2015-11-06 | 송동준 | Composition of foaming insole and manufacturing method of foaming insole using the same |
-
2015
- 2015-10-20 KR KR1020150145969A patent/KR101594016B1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101566947B1 (en) * | 2015-08-13 | 2015-11-06 | 송동준 | Composition of foaming insole and manufacturing method of foaming insole using the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019194590A1 (en) * | 2018-04-04 | 2019-10-10 | 화인케미칼 주식회사 | Method for manufacturing shoe sole having multiple colors |
| KR20190116104A (en) * | 2018-04-04 | 2019-10-14 | 화인케미칼 주식회사 | Fabricating method for multi-colored shoe soles |
| KR102067609B1 (en) * | 2018-04-04 | 2020-01-17 | 화인케미칼 주식회사 | Fabricating method for multi-colored shoe soles |
| KR102179732B1 (en) * | 2019-09-02 | 2020-11-17 | 한국신발피혁연구원 | Assembling method of shoes sole and shoes sole using the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101104252B1 (en) | Composition of foam midsole compound can adhere with Non-UV and preparing method of foam midsole using it | |
| US10221310B2 (en) | Composition and process of manufacture for a shoe sole component for footwear | |
| KR101214673B1 (en) | Method of manufacturing footwear | |
| CN110294860B (en) | Process for producing elastic composite material and product thereof | |
| TW201704339A (en) | Thermoplastic polyurethane composite material composition, thermoplastic polyurethane composite material and manufacturing method thereof, shoe material and wearable apparatus | |
| KR102097400B1 (en) | A composition for shoes midsole and a method for manufacturing shoes midsole using the same | |
| KR101566947B1 (en) | Composition of foaming insole and manufacturing method of foaming insole using the same | |
| KR101594016B1 (en) | Manufacturing method of shoes sole and shoes sole using the same | |
| KR20180117388A (en) | A composition for a highly adhesive shoe midsole with non-ultraviolet rays and a method for manufacturing the same | |
| KR101674366B1 (en) | Manufacturing method of cosmetic puff | |
| KR101075070B1 (en) | Method preparing of the foam using composition using foam composition contain ethylene vinyl acetate resin and sillicone rubber | |
| KR100980028B1 (en) | Foam composition having shock absorption at a variety of temperature range | |
| CN109135039B (en) | Plant micropowder polymer foaming material and preparation method and application thereof | |
| JP2002272504A (en) | Midsole provided with support member | |
| KR101165803B1 (en) | Composition of foam compound can adhere without UV and buffing for the sole of shoes and preparing method of foam using it | |
| KR100695401B1 (en) | Ethylene vinyl Acetate CopolymerEVA compounds for a footwear sole, Method for producing a sponge by using thereof and a sponge | |
| KR101916197B1 (en) | Molding method for manufacturing base plate of shoes | |
| KR101500807B1 (en) | Composite for adhesive films | |
| KR101078354B1 (en) | Composite of sponge foam for midsole having excellent adhesionproperties and Menufacturing method thereof and Method for bonding sponge foam with plasma treatment | |
| KR102013905B1 (en) | Manufacturing method of foam using the improved cmp process | |
| KR101609355B1 (en) | Manufacturing method of integrally formed shoe sole for better cushion and light weight and integrally formed shoe sole using the same | |
| EP3037465B1 (en) | Compositions made from plasticized thermoplastic polyurethanes | |
| KR100691857B1 (en) | Sponge composition for molding | |
| KR20160061463A (en) | Mid-sole having function of shockproof and elastic rebound, manufacturing method of mid-sole | |
| KR102170652B1 (en) | A Soft High Resilience Foam Material having Excellent Thermal-shrinkage Property and A Manufacturing method therefore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant |