CN106723642B - Manufacturing method of novel loofah sponge sole - Google Patents
Manufacturing method of novel loofah sponge sole Download PDFInfo
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- CN106723642B CN106723642B CN201710140197.2A CN201710140197A CN106723642B CN 106723642 B CN106723642 B CN 106723642B CN 201710140197 A CN201710140197 A CN 201710140197A CN 106723642 B CN106723642 B CN 106723642B
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- sole
- sponge
- loofah sponge
- loofah
- vegetable
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- 235000009814 Luffa aegyptiaca Nutrition 0.000 title claims abstract description 134
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 244000280244 Luffa acutangula Species 0.000 title 1
- 244000302544 Luffa aegyptiaca Species 0.000 claims abstract description 134
- 238000003825 pressing Methods 0.000 claims abstract description 70
- 239000003292 glue Substances 0.000 claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims abstract description 10
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract description 8
- 238000007731 hot pressing Methods 0.000 claims abstract description 6
- 238000007788 roughening Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 14
- 230000035939 shock Effects 0.000 abstract description 7
- 230000002045 lasting effect Effects 0.000 abstract description 4
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 abstract 4
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract 4
- 239000010410 layer Substances 0.000 description 32
- 230000000694 effects Effects 0.000 description 13
- 238000013016 damping Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 244000241235 Citrullus lanatus Species 0.000 description 2
- 235000012828 Citrullus lanatus var citroides Nutrition 0.000 description 2
- 241000219122 Cucurbita Species 0.000 description 2
- 235000009852 Cucurbita pepo Nutrition 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 235000003956 Luffa Nutrition 0.000 description 1
- 241000219138 Luffa Species 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses a manufacturing method of a novel loofah sponge sole, which is provided with an EVA (ethylene vinyl acetate) insole, wherein a loofah sponge pressing sheet is integrally bonded on the upper surface of the EVA insole in a hot pressing manner. The novel loofah sole is applied to various shoe bodies. The manufacturing method of the novel loofah sponge sole comprises the following steps: (1) and vegetable sponge pretreatment: pretreating to obtain a vegetable sponge pressed embryo; (2) measuring the body and cutting into pieces: cutting the vegetable sponge pressing embryo to obtain vegetable sponge pressing sheets with required size and shape; (3) and hot-press forming: and adhering the lower surface of the loofah sponge pressing sheet and the upper surface of the EVA middle sole through glue, and performing integrated hot press molding to obtain the loofah sponge sole. Through reasonable and optimized design, the formed sole has excellent, lasting and effective shock absorption, moisture absorption, good foot feeling and other comfort performances, and is high in practicability, natural and environment-friendly.
Description
Technical Field
The invention relates to the technical field of shoes, in particular to a method for manufacturing a novel loofah sponge sole.
Background
Shoes are indispensable daily necessities in daily life of people, and the types of shoes are various, but regardless of the types of shoes, the wearing comfort performance is the most basic and critical consideration. The comfort of the shoe is mainly reflected in the shock absorption and moisture absorption of the shoe besides the comfort of the foot. At present, various types of shoes are designed aiming at the comfort performance of the shoes, wherein functional designs are designed by combining the loofah sponge on the shoe body. The vegetable sponge belongs to a natural pollution-free agricultural waste product, and is applied to shoes, so that the shoe is safe and healthy, and the waste recycling is realized. At present, the design mode of the loofah sponge on the shoe body, namely the loofah sponge is simply sewn to manufacture the cloth shoe, or the interlayer design is adopted, the problem that the design is rough and not fine enough exists, so that the function of the loofah sponge is difficult to be exerted to the maximum, the problem that the function is not favorable for continuously and effectively exerting is solved, and the practical service life is short.
In view of the above, the present inventors have made intensive studies and have provided a novel loofah sponge sole, and applications and manufacturing methods thereof.
Disclosure of Invention
The invention aims to provide a novel loofah sponge sole, which has the advantages of excellent, lasting and effective shock absorption, moisture absorption, good foot feeling and other comfort performances, strong practicability, safety, health, nature and environmental protection through reasonable and optimal design.
In order to achieve the above purpose, the solution of the invention is:
a novel loofah sponge sole is provided with an EVA insole, and a loofah sponge pressing sheet is integrally bonded on the upper surface of the EVA insole in a hot-pressing manner.
The upper surface of the loofah sponge pressing sheet is provided with a glue film roughening layer, and fine holes formed by roughening are densely distributed on the glue film roughening layer.
The vegetable sponge pressing sheet is integrally pressed and sunk in the upper surface of the EVA insole, and the upper surface of the vegetable sponge pressing sheet is flush with the peripheral ring part bordering on the upper surface of the EVA insole.
The vegetable sponge pressing piece is of an integral whole piece structure corresponding to the integral shape of the EVA insole; or at least one split type slicing structure corresponding to the modeling of the EVA middle sole part.
The vegetable sponge pressing sheet is provided with a front sheet and a rear sheet which are respectively arranged corresponding to a sole area and a heel area of the EVA insole.
The bottom surface of the EVA insole is also integrally provided with a rubber bottom.
The invention also aims to provide application of the novel loofah sole, and the novel loofah sole is applied to various types of shoe bodies.
The invention also aims to provide a manufacturing method of the novel loofah sponge sole, which comprises the following steps:
(1) and vegetable sponge pretreatment: pretreating to obtain a vegetable sponge pressed embryo;
(2) measuring the body and cutting into pieces: cutting the vegetable sponge pressing embryo to obtain vegetable sponge pressing sheets with required size and shape;
(3) and hot-press forming: and adhering the lower surface of the loofah sponge pressing sheet and the upper surface of the EVA middle sole through glue, and performing integrated hot press molding to obtain the loofah sponge sole.
In the step (3), before hot press forming, a film glue layer which at least completely covers the loofah sponge pressing sheet is arranged on the upper surface of the loofah sponge pressing sheet; the manufacturing method further comprises the step (4) of cooling and shaping the prepared loofah sponge sole, then roughening the upper surface of the loofah sponge sole, and roughening the rubber film layer on the upper surface of the loofah sponge sole to form a rubber film roughened layer densely distributed with fine holes.
In the step (1), the pretreatment mainly comprises the working procedures of cutting open the towel gourd, removing seed sundries, dehydrating, drying and flattening.
In the step (2), an integral loofah sponge pressing sheet corresponding to the whole sole shape is measured and cut according to the shape and the size of a loofah sponge pressing sheet blank, or a split loofah sponge pressing sheet corresponding to the partial sole shape is measured and cut.
After the scheme is adopted, compared with the prior art, the novel loofah sponge sole and the application and manufacturing method thereof have the beneficial effects that: according to the loofah sponge shoe sole, the loofah sponge pressing piece is integrally hot-pressed and formed on the upper surface of the EVA insole, the loofah sponge pressing piece and the EVA insole are effectively and fully combined through integral hot pressing, and the EVA insole is an integral supporter of the loofah sponge pressing piece. The loofah sponge pressing sheet is positioned on the upper surface of the sole which is directly contacted with the sole, and the direct and effective moisture absorption effect is exerted. The fibrous structure of the vegetable sponge pressing sheet brings a damping effect, and the EVA insole is integrally supported, so that the vegetable sponge pressing sheet is stable in damping structure, not easy to deform, better in foot feeling and more stable and durable in damping effect. Furthermore, the sponge gourd pulp pressing sheet is also provided with a glue film roughening layer, the structure of the layer is designed for adapting to the manufacturing process, and the structure improvement and the protection effect are brought to the sponge gourd pulp pressing sheet. Therefore, through reasonable optimization design, the formed sole has excellent, continuous and effective shock absorption, moisture absorption, good foot feeling and other comfort performances, and is high in practicability, safe, healthy, natural and environment-friendly.
Drawings
FIG. 1 is a side view of the sole made of vegetable sponge of the present invention;
fig. 2 is a top view of the loofah sole of the present invention.
Description of the reference symbols
EVA middle sole 1, vegetable sponge preforming 2.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and embodiments.
The scheme relates to a novel loofah sponge sole, which is provided with an EVA insole 1 as shown in figures 1-2, wherein a loofah sponge pressing sheet 2 is integrally bonded on the upper surface of the EVA insole 1 through hot pressing.
An adhesive layer for hot-press bonding is arranged between the EVA middle sole 1 and the loofah sponge pressing sheet 2, and particularly a glue adhesive layer can be adopted.
Preferably, in the specific design, the loofah sponge pressing sheet 2 does not completely cover the whole upper surface of the EVA insole 1, and a certain distance is left between the loofah sponge pressing sheet 2 and the edge of the upper surface of the EVA insole 1. The vegetable sponge pressing sheet 2 is integrally pressed and sunk in the upper surface of the EVA insole 1, and the upper surface of the vegetable sponge pressing sheet 2 and the peripheral ring part of the upper surface of the EVA insole 1, which are connected with each other, are arranged in a flush manner.
Therefore, the loofah sponge pressing sheet 2 is integrally hot-pressed on the upper surface of the EVA insole 1, the loofah sponge pressing sheet 2 and the EVA insole 1 are effectively and fully combined through integral hot pressing, the EVA insole 1 is an integral support body of the loofah sponge pressing sheet 2, and the loofah sponge pressing sheet 2 is used as a functional auxiliary body of the EVA insole 1 and is inseparable and complementary. The loofah sponge pressing piece 2 is designed on the upper surface of the sole in direct contact with the sole, so that the direct and effective moisture absorption effect is exerted, the fibrous structure of the loofah sponge pressing piece 2 brings the direct and effective damping effect, and the EVA insole 1 is integrally supported (particularly the sunk integral support), so that the loofah sponge pressing piece 2 is very stable in damping structure, not prone to deformation, moderate in damping effect, better in foot feeling and more stable and lasting in damping effect. According to the traditional method, the loofah sponge is directly sewn in two layers or is in a two-layer simple composite design, the loofah sponge is unstable in structure, the damping effect is in the changes of too soft in the initial stage, moderate in the middle stage and too hard in the later stage, and the damping effect is poor and not lasting.
Preferably, the upper surface of the vegetable sponge pressing sheet 2 is further provided with a glue film roughening layer, the glue film roughening layer is a layer structure formed by roughening the glue film which is integrally hot-pressed and compounded on the vegetable sponge pressing sheet 2, and pores formed by roughening are densely distributed on the layer structure. The design of the rubber film thickening layer is suitable for the manufacturing process and is arranged, and on the other hand, the rubber film thickening layer also has the functions of structure improvement and protection on the watermelon pulp pressing sheet 2. If the loofah sponge pressing piece 2 is not directly arranged on the surface layer of the sole, the moisture absorption and shock absorption effects exerted by the loofah sponge pressing piece 2 are limited, the loofah sponge pressing piece 2 is directly arranged on the surface layer of the sole, and the loofah sponge pressing piece 2 is of a fiber mesh structure with a relatively large size, so that the uneven surface of the sole is easily caused during long-time treading, broken particles are easily blocked, and the shock absorption effect is also influenced. The present case is beaten thick layer design through the glued membrane and has been overcome the above the problem, the glued membrane is beaten the pore design of thick layer self and does not influence luffa pulp preforming 2 hygroscopic property, and this glued membrane is beaten thick layer and is equivalent to the aperture of the fibre mesh structure who reduces sole surface part, improves sole surface rerum natura, promotes the shock attenuation performance.
Preferably, the shape design of the loofah sponge pressing sheet 2 has various modes, and in one embodiment, the loofah sponge pressing sheet 2 is an integral whole-sheet structure corresponding to the integral shape of the EVA midsole 1, that is, the loofah sponge pressing sheet 2 has a structure similar to a shoe pad (as shown in fig. 2). Another embodiment, the split type burst structure of at least one slice corresponding to partial molding of EVA midsole 1, namely loofah preforming 2 sets up at least one slice, and this one slice corresponds partial position district of EVA midsole 1, for example specific embodiment, loofah preforming 2 has two that set up around, and these two slices are foot palm district molding and heel district molding respectively around, correspond foot palm district and heel district setting of EVA midsole 1 respectively.
Preferably, the EVA midsole 1 is designed according to actual types, and other designs can be added, for example, a rubber sole is integrally arranged on the bottom surface.
The application of the novel loofah sponge sole can be applied to various types of shoe bodies, so that various types of shoes are formed. The moisture absorption function is very strong, the natural traditional Chinese medicine is environment-friendly, and the shoe is particularly applied to children shoes and is very beneficial to the health of children.
The invention also provides a manufacturing method of the novel loofah sponge sole, which comprises the following steps:
(1) and vegetable sponge pretreatment: pretreating to obtain a vegetable sponge pressed embryo;
(2) measuring the body and cutting into pieces: cutting the vegetable sponge pressing embryo to obtain vegetable sponge pressing sheets with required size and shape;
(3) and hot-press forming: and adhering the lower surface of the loofah sponge pressing sheet and the upper surface of the EVA middle sole through glue, and performing integrated hot press molding to obtain the loofah sponge sole.
Preferably, in the step (1), the pretreatment mainly comprises the working procedures of cutting open the towel gourd, removing impurities from seeds, dehydrating, drying, flattening and the like. Of course, a bleaching process can be carried out in the middle according to actual conditions.
The beneficial effects of the loofah sole formed by the loofah sole manufacturing method are explained in the description of the novel loofah sole, and the detailed description is omitted.
Preferably, in the step (3), before hot press forming, a film glue layer at least completely covering the loofah sponge pressing sheet is further arranged on the upper surface of the loofah sponge pressing sheet; the edge of the rubber film layer can extend to the upper surface of the EVA insole so as to enhance the airtightness of the loofah sponge pressing sheet completely coated by the rubber film layer and the EVA insole; the manufacturing method further comprises the step (4) of cooling and shaping the prepared loofah sponge sole, then roughening the upper surface of the loofah sponge sole, and roughening the rubber film layer on the upper surface of the loofah sponge sole to form a rubber film roughened layer densely distributed with fine holes. The glue film layer is designed before hot press molding in the step (3), and is integrally compounded on the upper surface of the EVA insole (the vegetable sponge pressing sheet) after hot press molding, and the vegetable sponge pressing sheet is completely covered by the glue film layer for sealing and coating; and (3) cooling and shaping in the step (4), wherein the loofah tablet is completely sealed, coated and isolated by the rubber film layer, and the rubber film layer has a waterproof effect, so that the problem that the loofah tablet is soaked in the cooling process is solved, the drying property of the loofah tablet is kept, and the excellent functional property of the loofah tablet and the property of the whole sole are finally ensured. And after cooling and shaping, performing roughening treatment, wherein the roughening procedure is used for enhancing the tension of the sole, and the roughening process simultaneously acts on the adhesive film layer to enable the adhesive film layer to be coarsely ground to form densely-distributed fine holes. In the step (3), the glue film layer is subjected to hot-press forming and is integrally compounded with the loofah sponge pressing sheet, and as the surface of the loofah sponge pressing sheet is provided with fibrous meshes, the glue film layer can permeate into the meshes, so that the formation of rough grinding of the fine holes of the glue film layer is facilitated in the subsequent roughening procedure. This fine pore structure, as described above, brings structural improvement and protective effect to the watermelon pulp sheeting 2. The description is not repeated here.
Preferably, in the step (2), the body measuring and cutting piece has multiple modes, namely an integral type loofah sponge pressing piece and a split type loofah sponge pressing piece, and specifically, the integral type loofah sponge pressing piece corresponding to the whole sole shape can be measured and cut (as shown in fig. 2) or the split type loofah sponge pressing piece corresponding to the sole part shape can be measured and cut according to the shape and the size of a loofah sponge pressing piece blank. The shape of the split type luffa vegetable sponge pressing sheet can be in various forms corresponding to the shape of any part of the sole, such as the shape of the sole area and the shape of the heel area, and of course, other shapes can be provided. The design can maximize the utilization of the vegetable sponge and is beneficial to maximizing the function. The invention is based on the hot-press molding mode of the EVA insole, and is a foundation and guarantee that the utilization maximization of the vegetable sponge can be realized.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.
Claims (3)
1. A manufacturing method of a novel loofah sponge sole is characterized by comprising the following steps:
(1) and vegetable sponge pretreatment: pretreating to obtain a vegetable sponge pressed embryo;
(2) measuring the body and cutting into pieces: cutting the vegetable sponge pressing embryo to obtain vegetable sponge pressing sheets with required size and shape;
(3) and hot-press forming: bonding the lower surface of the loofah sponge pressing sheet with the upper surface of the EVA middle sole through glue, and integrally hot-pressing and molding to obtain a loofah sponge sole;
in the step (3), before hot press forming, a film glue layer which at least completely covers the loofah sponge pressing sheet is arranged on the upper surface of the loofah sponge pressing sheet; the manufacturing method further comprises the step (4) of cooling and shaping the prepared loofah sponge sole, then roughening the upper surface of the loofah sponge sole, and roughening the rubber film layer on the upper surface of the loofah sponge sole to form a rubber film roughened layer densely distributed with fine holes.
2. The method for manufacturing the novel loofah sponge sole according to claim 1, wherein in the step (1), the pretreatment mainly comprises the steps of cutting open loofah, removing seed impurities, dehydrating, drying and flattening.
3. The method for making a novel loofah sponge shoe sole according to claim 1, wherein in step (2), an integral loofah sponge sheet corresponding to the shape of the whole shoe sole or a split loofah sponge sheet corresponding to the shape of part of the shoe sole is measured according to the shape and size of the loofah sponge sheet blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140197.2A CN106723642B (en) | 2017-03-10 | 2017-03-10 | Manufacturing method of novel loofah sponge sole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140197.2A CN106723642B (en) | 2017-03-10 | 2017-03-10 | Manufacturing method of novel loofah sponge sole |
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| Publication Number | Publication Date |
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| CN106723642A CN106723642A (en) | 2017-05-31 |
| CN106723642B true CN106723642B (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710140197.2A Active CN106723642B (en) | 2017-03-10 | 2017-03-10 | Manufacturing method of novel loofah sponge sole |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109363292A (en) * | 2018-10-18 | 2019-02-22 | 福建省莆田市双源鞋业有限公司 | A kind of sponge gourd Antiskid sole and preparation method thereof |
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|---|---|---|---|---|
| US4243446A (en) * | 1977-12-14 | 1981-01-06 | Allibert Exploitation, Societe Anonyme | Method of making a luffa composite |
| CN1830345A (en) * | 2005-03-09 | 2006-09-13 | 段逢义 | Preparation method of pure natural luffa health-care shoe pad |
| CN201039772Y (en) * | 2007-05-15 | 2008-03-26 | 黄新文 | Luffa slipper |
| CN201175015Y (en) * | 2007-11-13 | 2009-01-07 | 宫志利 | Natural plant health-care shoes |
| CN201210884Y (en) * | 2008-06-23 | 2009-03-25 | 刘喜 | Pure natural loofah shoes |
| CN101683191A (en) * | 2009-08-14 | 2010-03-31 | 薛学涛 | Straw sandal by using towel gourd raw material as sole and manufacturing method thereof |
| CN206547967U (en) * | 2017-03-10 | 2017-10-13 | 福建起步儿童用品有限公司 | Novel loofah sponge sole |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347131B (en) * | 2008-08-30 | 2011-07-06 | 袁会文 | Loofah antimicrobial health-care material and uses thereof |
| CN104957918B (en) * | 2015-07-24 | 2018-05-01 | 安徽农业大学 | A kind of a three use health environment-friendly biomass sponge gourd sponge partitioned mattress and its processing method |
-
2017
- 2017-03-10 CN CN201710140197.2A patent/CN106723642B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4243446A (en) * | 1977-12-14 | 1981-01-06 | Allibert Exploitation, Societe Anonyme | Method of making a luffa composite |
| CN1830345A (en) * | 2005-03-09 | 2006-09-13 | 段逢义 | Preparation method of pure natural luffa health-care shoe pad |
| CN201039772Y (en) * | 2007-05-15 | 2008-03-26 | 黄新文 | Luffa slipper |
| CN201175015Y (en) * | 2007-11-13 | 2009-01-07 | 宫志利 | Natural plant health-care shoes |
| CN201210884Y (en) * | 2008-06-23 | 2009-03-25 | 刘喜 | Pure natural loofah shoes |
| CN101683191A (en) * | 2009-08-14 | 2010-03-31 | 薛学涛 | Straw sandal by using towel gourd raw material as sole and manufacturing method thereof |
| CN206547967U (en) * | 2017-03-10 | 2017-10-13 | 福建起步儿童用品有限公司 | Novel loofah sponge sole |
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| CN106723642A (en) | 2017-05-31 |
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