TW202011852A - Composition for making shoe sole substance and eco-friendly slipper with which the manufacturing cost of the shoe sole can be reduced and the manufactured slipper is not likely to generate odor - Google Patents
Composition for making shoe sole substance and eco-friendly slipper with which the manufacturing cost of the shoe sole can be reduced and the manufactured slipper is not likely to generate odor Download PDFInfo
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- TW202011852A TW202011852A TW107132791A TW107132791A TW202011852A TW 202011852 A TW202011852 A TW 202011852A TW 107132791 A TW107132791 A TW 107132791A TW 107132791 A TW107132791 A TW 107132791A TW 202011852 A TW202011852 A TW 202011852A
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Abstract
Description
本發明是有關於一種用於形成鞋底材料的組成物與含有由該組成物所形成鞋底的環保拖鞋，特別是指一種包含軟木料之用於形成鞋底材料的組成物與含有由該組成物所形成鞋底的環保拖鞋。The invention relates to a composition for forming a sole material and an environmentally friendly slippers containing the sole formed from the composition, in particular to a composition containing cork material for forming a sole material and containing the composition Eco-friendly slippers that form the sole.
現有能作為鞋底材料的種類繁多，舉例如橡膠(天然橡膠或人工橡膠)、聚乙烯醋酸乙烯酯(EVA)、聚乙烯(PE)、聚丙烯(PP)、聚氨酯(PU)、熱塑性聚氨酯彈性體橡膠(TPU)或聚氯乙烯(PVC)等。其中，若以橡膠、EVA、PE、PP或PVC作為鞋底材料的拖鞋，會因該等材料難以分解而造成環境負擔，不符合環保需求；而PU與TPU雖皆為可水解材料，但以PU或TPU作為鞋底材料的拖鞋時，若長時間不穿，鞋底容易劣化崩解或粉末化而無法繼續使用。此外，以前述材料製作鞋底時，於製作過程中通常會加入可塑劑，若長期穿著對人體也會造成危害。There are many types of sole materials available, such as rubber (natural rubber or artificial rubber), polyethylene vinyl acetate (EVA), polyethylene (PE), polypropylene (PP), polyurethane (PU), thermoplastic polyurethane elastomer Rubber (TPU) or polyvinyl chloride (PVC) etc. Among them, slippers with rubber, EVA, PE, PP or PVC as the sole material will cause environmental burden due to the difficulty of decomposition of these materials, which does not meet the environmental protection requirements; although both PU and TPU are hydrolyzable materials, the PU Or when TPU is used as a shoe sole material, if the shoe is not worn for a long time, the shoe sole is easily deteriorated, disintegrated or powdered and cannot be used any longer. In addition, when the shoe sole is made of the aforementioned materials, plasticizers are usually added during the manufacturing process, which may cause harm to the human body if worn for a long time.
CN 103072177B公開一種用於形成鞋底材料的組成物，該組成物包含軟木廢料、植物纖維(麻絲或棕櫚絲)及液態聚氨酯(黏著劑)。雖然該組成物所形成的鞋底材料能解決前段使用橡膠、EVA、PE、PP、PVC、PU或TPU等材料作為鞋底材料所產生的問題(如不符環保需求、鞋底容易崩解及粉末化或製作過程中需添加可塑劑等)；但因為麻絲或棕櫚絲等植物纖維較不易取得，當進一步使用含有植物纖維的組成物製作鞋底材料及拖鞋的鞋底時，將會提高拖鞋的製作成本，且該組成物所形成的鞋底材料也無法解決拖鞋於穿戴後容易產生臭味的問題。因此，CN 103072177B所公開用於形成鞋底材料的組成物尚需更進一步改良。CN 103072177B discloses a composition for forming a sole material, the composition comprising cork waste, vegetable fibers (hemp or palm silk) and liquid polyurethane (adhesive). Although the sole material formed by this composition can solve the problems caused by using rubber, EVA, PE, PP, PVC, PU or TPU as the sole material in the front stage (such as not meeting environmental protection requirements, the sole is easy to disintegrate and powder or make Plasticizers, etc. need to be added during the process); However, because plant fibers such as hemp or palm silk are less available, when the composition of plant fibers is further used to make sole materials and slippers, the production cost of slippers will increase, and The sole material formed by the composition also cannot solve the problem that the slippers are prone to odor after wearing. Therefore, the composition disclosed in CN 103072177B for forming a sole material needs further improvement.
鑒於前述CN 103072177B所公開用於形成鞋底材料的組成物之缺點，本案申請人首先思及以日常生活中容易取得、或甚而可免費取得的咖啡料(例如咖啡粉或咖啡渣)來代替不易取得的麻絲或棕櫚絲等植物纖維，以降低鞋底(即拖鞋)的製作成本，且同時藉由咖啡料能除臭的特性，解決拖鞋於穿戴後容易產生臭味的問題。In view of the shortcomings of the aforementioned composition for forming sole materials disclosed in CN 103072177B, the applicant of the present case first thought of replacing easily accessible coffee materials (such as coffee powder or coffee grounds) with coffee materials that are easily available or even freely available in daily life. To reduce the production cost of soles (ie slippers) by using plant fibers such as hemp or palm silk, and at the same time, the deodorizing characteristics of the coffee material can solve the problem that the slippers are prone to odor after wearing.
因此，本發明的第一目的，即在提供一種用於形成鞋底材料的組成物，該組成物所形成的鞋底材料除了符合可分解、對人體無害等環保需求外，還能降低鞋底(即拖鞋)的製作成本，後續所製得的拖鞋於穿戴後也較不易產生臭味。Therefore, the first object of the present invention is to provide a composition for forming a sole material. The sole material formed by the composition can not only meet the environmental requirements such as decomposable and harmless to human body, but also reduce the sole (ie slippers) ) Production cost, the slippers made afterwards are less likely to produce odor after wearing.
於是，本發明用於形成鞋底材料的組成物，包含軟木料、可分解的黏著劑及咖啡料，該黏著劑用於黏著該軟木料與該咖啡料。Therefore, the composition for forming a sole material of the present invention includes a cork material, a decomposable adhesive and a coffee material, and the adhesive is used to adhere the cork material and the coffee material.
因此，本發明的第二目的，即在提供一種環保拖鞋，該環保拖鞋的鞋底除了符合可分解、對人體無害等環保需求外，同時具備製作成本較低且穿戴後不易產生臭味等優點。Therefore, the second object of the present invention is to provide an environmentally friendly slippers. The sole of the environmentally friendly slippers not only meets the environmental requirements such as decomposable and harmless to human body, but also has the advantages of lower manufacturing cost and less odor after wearing.
於是，本發明環保拖鞋包含一鞋底及一設置於該鞋底上的鞋耳，其中，該鞋底的材料是由前述用於形成鞋底材料的組成物所形成。Therefore, the environmentally friendly slippers of the present invention include a sole and an ear provided on the sole, wherein the material of the sole is formed by the aforementioned composition for forming the sole material.
本發明的功效在於：由於本發明組成物中的咖啡料容易取得且具有除臭的功能，因而除了能降低鞋底(即拖鞋)的製作成本外，後續所製得的拖鞋於穿戴後也較不易產生臭味；此外，又由於該軟木料及黏著劑皆為可分解的成分，因而使本發明組成物所形成的鞋底材料也能符合可分解、對人體無害等環保需求。The effect of the present invention is that since the coffee material in the composition of the present invention is easy to obtain and has a deodorizing function, in addition to reducing the manufacturing cost of the sole (ie, slippers), the subsequent slippers are also less easy to wear after wearing Odor is generated; in addition, since the cork material and the adhesive are both decomposable components, the sole material formed by the composition of the present invention can also meet the environmental requirements such as decomposability and harmless to the human body.
以下將就本發明內容進行詳細說明：The content of the present invention will be described in detail below:
＜＜ 用於形成鞋底材料的組成物Composition for forming sole material ＞＞
本發明的組成物包含軟木料、可分解的黏著劑及咖啡料。The composition of the present invention includes cork material, decomposable adhesive and coffee material.
該軟木料可為任何形式或來源的軟木且其粒徑大小也無任何限制，例如該軟木料可為生產軟木塞過程中所剩餘的軟木料(即邊角料)、未使用的軟木經破碎後所得的軟木料或是回收的軟木塞經破碎後所得的軟木料。較佳地，該軟木料的來源為生產軟木塞過程中所剩餘的軟木料。The cork material can be any form or source of cork and its particle size is not limited. For example, the cork material can be the remaining cork material (that is, scraps) remaining in the production of cork plugs, unused cork obtained after crushing Cork material or the cork material obtained by crushing the cork. Preferably, the source of the cork material is the remaining cork material in the process of producing cork stoppers.
較佳地，以該組成物的總重為100 wt%計，該軟木料的重量範圍為45~55 wt%。更佳地，該軟木料的重量範圍為47~53 wt%。Preferably, based on the total weight of the composition being 100 wt%, the weight range of the cork material is 45~55 wt%. More preferably, the weight range of the cork material is 47-53 wt%.
該可分解的黏著劑可為現有任何可被分解且能用於黏著軟木料與咖啡料的試劑。前述「可分解」並不限於是自然分解或利用人工方式分解。The decomposable adhesive can be any agent that can be decomposed and can be used to adhere cork and coffee materials. The aforementioned "decomposable" is not limited to natural decomposition or artificial decomposition.
較佳地，該可分解的黏著劑是選自於黏膠、紫外線硬化膠(UV adhesive)或前述的組合。Preferably, the decomposable adhesive is selected from viscose, UV adhesive or a combination of the foregoing.
該黏膠含有聚合物，該聚合物是選自於聚氨酯(PU)、尿素甲醛樹脂(urea-formaldehyde resin)、聚醋酸乙烯酯(polyvinyl acetate)、聚乙烯醇(polyvinyl alcohol)、聚乳酸(polylactic acid)、三聚氰胺-甲醛樹脂(melamine-formaldehyde resin)、三聚氰胺-尿素-甲醛共縮合樹脂(melamine-urea-formaldehyde resin)、酚醛樹脂(phenol-formaldehyde resin)、間苯二酚-甲醛樹脂(resorcinol-formaldehyde resin)、環氧樹脂(epoxy resin)或前述的組合。The viscose contains a polymer selected from polyurethane (PU), urea-formaldehyde resin, polyvinyl acetate, polyvinyl alcohol, and polylactic acid acid), melamine-formaldehyde resin, melamine-urea-formaldehyde resin, phenol-formaldehyde resin, resorcinol-formaldehyde resin formaldehyde resin), epoxy resin, or a combination of the foregoing.
該紫外線硬化膠含有預聚物、單體及光引發劑(photoinitiator)且於照射紫外線後會進行固化。該預聚物例如但不限於是環氧丙烯酸酯(epoxy acrylate)、聚氨酯丙烯酸酯[poly(urethane acrylate)]、聚醚丙烯酸酯(polyether acrylate)、聚酯丙烯酸酯(polyester acrylate)、丙烯酸樹脂(acrylic resin)或前述的組合。該單體例如但不限於是丙烯酸異冰片酯(isobornyl acrylate)、甲基丙烯酸異冰片酯(isobornyl methacrylate)、甲基丙烯酸羥乙酯(hydroxyethyl methacrylate)、二縮三丙二醇二丙烯酸酯[tri(propylene glycol) diacrylate]、1,6-己二醇二丙烯酸酯(1,6-hexanediol diacrylate)、二乙二醇二丙烯酸酯(diethylene glycol diacrylate)、新戊二醇二丙烯酸酯(neopentyl glycol diacrylate)、三羥甲基丙烷三丙烯酸酯(trimethylol propane triacrylate)、季戊四醇三丙烯酸酯(pentaerythritol triacrylate)或前述的組合。The ultraviolet curable glue contains a prepolymer, a monomer, and a photoinitiator (photoinitiator) and is cured after being irradiated with ultraviolet rays. The prepolymer is, for example but not limited to, epoxy acrylate, poly(urethane acrylate), polyether acrylate, polyester acrylate, acrylic resin ( acrylic resin) or a combination of the foregoing. The monomer is, for example but not limited to, isobornyl acrylate, isobornyl methacrylate, hydroxyethyl methacrylate, tripropylene glycol diacrylate (tri(propylene glycol) diacrylate], 1,6-hexanediol diacrylate (1,6-hexanediol diacrylate), diethylene glycol diacrylate (diethylene glycol diacrylate), neopentyl glycol diacrylate (neopentyl glycol diacrylate), Trimethylol propane triacrylate (trimethylol propane triacrylate), pentaerythritol triacrylate (pentaerythritol triacrylate) or a combination of the foregoing.
較佳地，以該組成物的總重為100 wt%計，該黏著劑的重量小於45 wt%。特別說明的是，本發明組成物中的咖啡料在後續形成鞋底材料的熱壓過程中，其與軟木料間的接著力會上升，所以藉由添加咖啡料能降低黏著劑的使用量，即本發明當該黏著劑的重量小於45 wt%時，除了可降低鞋底(即拖鞋)的製作成本外，又由於組成物中有添加咖啡料，所以在降低黏著劑使用量的情況下還能維持後續所製得鞋底材料各個成分間的接合強度，並不會因降低黏著劑的使用量而導致接合強度下降。更佳地，該黏著劑的重量範圍為35~44 wt%。當該黏著劑的重量小於35 wt%時，會使該組成物中的軟木料與咖啡渣較不易黏著在一起，因而使該組成物後續較不易製得該鞋底材料；而當該黏著劑的重量大於44 wt%時，較易導致成本的浪費。Preferably, the weight of the adhesive is less than 45 wt% based on the total weight of the composition being 100 wt%. In particular, the coffee material in the composition of the present invention will increase the adhesion between the cork material and the cork material during the subsequent hot-pressing process of forming the sole material, so the addition of coffee material can reduce the amount of adhesive used, that is In the present invention, when the weight of the adhesive is less than 45 wt%, in addition to reducing the manufacturing cost of the sole (ie, slippers), and because the coffee material is added to the composition, it can be maintained under the condition of reducing the amount of adhesive used The joint strength between the various components of the sole material prepared subsequently will not decrease the joint strength due to the reduction in the amount of adhesive used. More preferably, the weight range of the adhesive is 35-44 wt%. When the weight of the adhesive is less than 35% by weight, the cork material and coffee grounds in the composition are less likely to stick together, thereby making it difficult for the composition to subsequently produce the sole material; and when the adhesive is When the weight is greater than 44 wt%, it is easy to cause cost waste.
該咖啡料是指咖啡經過經烘煮、沖泡後所剩餘的固體殘留物(例如咖啡渣)或尚未經過烘煮、沖泡的固體咖啡原料(例如咖啡粉或咖啡豆)。The coffee material refers to solid residues (such as coffee grounds) remaining after the coffee is roasted and brewed or solid coffee raw materials (such as coffee powder or coffee beans) that have not been roasted or brewed.
較佳地，以該組成物的總重為100 wt%計，該咖啡料的重量範圍為5~15 wt%。更佳地，該咖啡料的重量範圍為7~13 wt%。Preferably, based on the total weight of the composition being 100 wt%, the weight range of the coffee material is 5-15 wt%. More preferably, the weight of the coffee material ranges from 7 to 13 wt%.
＜＜ 鞋底材料Sole material ＞＞
本發明的鞋底材料是由前述之用於形成鞋底材料的組成物所形成。The sole material of the present invention is formed of the aforementioned composition for forming a sole material.
較佳地，該鞋底材料是依據下列步驟所製得： (1) 混合軟木料、可分解的黏著劑及咖啡料，以得到該用於形成鞋底材料的組成物；及 (2) 熱壓該用於形成鞋底材料的組成物，以得到該鞋底材料。Preferably, the sole material is made according to the following steps: (1) mixing cork material, decomposable adhesive and coffee material to obtain the composition for forming the sole material; and (2) hot pressing the sole material The composition used to form the sole material to obtain the sole material.
較佳地，熱壓的溫度範圍為140~155℃。更佳地，熱壓的溫度範圍為145~150℃。Preferably, the temperature range of the hot pressing is 140~155°C. More preferably, the temperature range of hot pressing is 145 to 150°C.
較佳地，熱壓的時間範圍為350~550秒。更佳地，熱壓的時間範圍為360~540秒。Preferably, the time range of hot pressing is 350-550 seconds. More preferably, the hot pressing time range is 360 to 540 seconds.
＜＜ 拖鞋flip flop ＞＞
本發明的環保拖鞋包含一鞋底及一設置於該鞋底上的鞋耳，其中，該鞋底的材料是由前述之用於形成鞋底材料的組成物所形成。The environmentally friendly slippers of the present invention include a shoe sole and a shoe ear provided on the shoe sole, wherein the material of the shoe sole is formed by the aforementioned composition for forming the shoe sole material.
較佳地，該鞋耳的材料為可分解材料。該可分解材料可為現有任何可被分解的材料。前述「可分解」並不限於是自然分解或利用人工方式分解。該可分解材料例如但不限於是純棉。Preferably, the material of the shoe ear is a decomposable material. The decomposable material may be any material that can be decomposed. The aforementioned "decomposable" is not limited to natural decomposition or artificial decomposition. The decomposable material is, for example but not limited to, pure cotton.
本發明將就以下實施例來作進一步說明，但應瞭解的是，該實施例僅為例示說明，而不應被解釋為本發明實施的限制。The present invention will be further described with respect to the following embodiments, but it should be understood that this embodiment is merely an illustration and should not be interpreted as a limitation of the implementation of the present invention.
在本發明被詳細描述前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same number.
＜＜ 製備例Preparation example ＞＞
製備軟木料Preparation of cork
將生產軟木塞過程中所剩餘的邊角料破碎後，即得到該軟木料。The cork material is obtained after the remaining scraps in the process of producing cork stoppers are broken.
＜＜ 實施例Examples ＞＞
製備軟木板材Preparation of cork board (( 鞋底材料Sole material ))
實施例的軟木板材是依據下列步驟所製得：步驟 (1)- 製備用於形成鞋底材料的組成物： 混合50 wt%製備例的軟木料、40 wt%聚氨酯膠(PU膠；廠商:Badische Anilin-und-Soda-Fabrik；型號:Elastan TC 8008 C-B)及10 wt%咖啡渣後，得到用於形成鞋底材料的組成物。步驟 (2)- 熱壓： 將該用於形成鞋底材料的組成物置於一模具中並以熱壓機進行熱壓後，得到該軟木板材。其中，熱壓溫度為145~150℃，熱壓時間為360~540秒。補充說明的是，該PU膠由於含有水，因此聚氨酯(PU)於該組成物中的重量實際上會小於40 wt%，且於熱壓過程中，PU膠中的水也會因熱而蒸散掉。The cork board of the examples is prepared according to the following steps: Step (1) -preparing a composition for forming a sole material: mixing 50 wt% of the cork material of the preparation example, 40 wt% of polyurethane glue (PU glue; manufacturer: Badische Anilin-und-Soda-Fabrik; model: Elastan TC 8008 CB) and 10 wt% coffee grounds to obtain a composition for forming sole materials. Step (2) -Hot pressing: After placing the composition for forming the sole material in a mold and hot pressing with a hot press, the cork board is obtained. Among them, the hot pressing temperature is 145 ~ 150 ℃, hot pressing time is 360 ~ 540 seconds. It is added that because the PU glue contains water, the weight of polyurethane (PU) in the composition will actually be less than 40 wt%, and during the hot pressing process, the water in the PU glue will also evaporate due to heat Off.
以前述實施例之軟木板材所製得的環保拖鞋於下列更詳細說明：The environmentally friendly slippers made from the cork board of the previous embodiment are described in more detail below:
參閱圖1，本發明環保拖鞋的一第一應用例，包含一鞋底1及一鞋耳2。Referring to FIG. 1, a first application example of the environmentally friendly slippers of the present invention includes a sole 1 and a
該鞋底1的材料為實施例之軟木板材。The material of the sole 1 is cork board of the embodiment.
該鞋耳2為一呈拱形的面體且設置於該鞋底1上，並該鞋耳2的兩側邊與該鞋底1的前段邊緣相連接。該鞋耳2的材料可為前述實施例的軟木板材或其它種可分解材料(例如純棉等)。The
參閱圖2，本發明環保拖鞋的一第二應用例，與該第一應用例相似，其差別在於，本第二應用例的鞋耳2與該第一應用例的鞋耳2構造不同。本第二應用例的鞋耳2為一呈人字形的夾腳式鞋帶且設置於該鞋底1上，並該鞋耳2之三個相間隔的端部21與該鞋底1相連接。本第二應用例之鞋耳2的材料為可分解材料，例如該鞋耳2可為純棉布條或純棉織帶。Referring to FIG. 2, a second application example of the environmentally friendly slippers of the present invention is similar to the first application example, and the difference is that the
特別值得一提的是，本第一與第二應用例的環保拖鞋由於其鞋底1的材料含有咖啡渣，因此其於穿戴後不易產生臭味；此外，由於其鞋底1與鞋耳2的材料皆為可分解材料且不含塑化劑等有毒成分，因此於穿戴時對人體無害，且廢棄後對環境也不會造成負擔。It is particularly worth mentioning that the environmentally friendly slippers of the first and second application examples are not likely to produce odor after wearing because the material of the sole 1 contains coffee grounds; in addition, due to the material of the sole 1 and the
需說明的是，本發明拖鞋的形狀與構造並不僅限於是前述第一與第二應用例(即圖1與圖2)所示之拖鞋的態樣，其只要包含鞋底與鞋耳兩種元件的拖鞋皆可應用在本發明上。It should be noted that the shape and structure of the slippers of the present invention are not limited to the shape of the slippers shown in the first and second application examples (ie, FIGS. 1 and 2 ), as long as they include two elements: sole and ear The slippers can be applied to the present invention.
綜上所述，由於本發明組成物中的咖啡渣容易取得且具有除臭的功能，因而除了能降低鞋底(即拖鞋)的製作成本外，後續所製得的拖鞋於穿戴後也較不易產生臭味，此外，又由於該軟木料及黏著劑皆為可分解的成分，因而使本發明組成物所形成的鞋底材料也能符合可分解、對人體無害等環保需求，故確實能達成本發明的目的。In summary, because the coffee grounds in the composition of the present invention are easily available and have a deodorizing function, in addition to reducing the manufacturing cost of the sole (ie, slippers), the subsequent slippers are also less likely to be produced after wearing Odor, in addition, because the cork and the adhesive are both decomposable components, the sole material formed by the composition of the present invention can also meet the environmental requirements such as decomposable and harmless to the human body, so it can indeed achieve the cost of the invention purpose.
惟以上所述者，僅為本發明的實施例而已，當不能以此限定本發明實施的範圍，凡是依本發明申請專利範圍及專利說明書內容所作的簡單的等效變化與修飾，皆仍屬本發明專利涵蓋的範圍內。However, the above are only examples of the present invention, and the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as Within the scope of the invention patent.
1:鞋底21:端部2:鞋耳1: sole 21: end 2: shoe ear
本發明的其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中： 圖1是一立體示意圖，說明本發明環保拖鞋的一第一應用例；及 圖2是一俯視示意圖，說明本發明環保拖鞋的一第二應用例。Other features and functions of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a schematic perspective view illustrating a first application example of the environmentally friendly slippers of the present invention; and FIG. 2 is a schematic top view , A second application example of the environmentally friendly slippers of the present invention will be described.
1:鞋底 1: sole
2:鞋耳 2: shoe ear
Claims (7)
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| TW107132791A TWI669077B (en) | 2018-09-18 | 2018-09-18 | Composition for forming a sole material and environmentally friendly slippers |
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| CN110819131A (en) * | 2019-11-20 | 2020-02-21 | 东莞市顶好手袋皮具有限公司 | Coffee grounds cork cloth and manufacturing method thereof |
| CN111070367A (en) * | 2019-12-26 | 2020-04-28 | 东莞市汇中软木制品有限公司 | Coffee cork and preparation method and application thereof |
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| CN103072177B (en) * | 2012-12-24 | 2015-07-08 | 杨鸿雨 | Environment-friendly cork compound material, adhesion agent and preparation method for products thereof |
| TW201435170A (en) * | 2013-03-15 | 2014-09-16 | Long-Chi Cai | Charcoal yarn knitted fabrics |
| CN203353781U (en) * | 2013-05-27 | 2013-12-25 | 莆田市华峰工贸有限公司 | Shoe |
| TWM514224U (en) * | 2015-07-23 | 2015-12-21 | Tai Song Entpr Co Ltd | Coffee environmental protection and deodorizing slippers |
| TWM572144U (en) * | 2018-09-18 | 2019-01-01 | 莊麒勳 | Environmental friendly slippers |
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