KR950007770B1 - Method for manufacturing shoes reinforcement and that reinforcement - Google Patents

Method for manufacturing shoes reinforcement and that reinforcement Download PDF

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Publication number
KR950007770B1
KR950007770B1 KR1019920001007A KR920001007A KR950007770B1 KR 950007770 B1 KR950007770 B1 KR 950007770B1 KR 1019920001007 A KR1019920001007 A KR 1019920001007A KR 920001007 A KR920001007 A KR 920001007A KR 950007770 B1 KR950007770 B1 KR 950007770B1
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South Korea
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short fiber
reinforcement
thickness
weight
resin
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KR1019920001007A
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Korean (ko)
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KR930016213A (en
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정현태
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정현태
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

To enhance the adhesiveness of the mid-sole w.r.t. the uppers and the sole of shoes, a reinforcement strip for use in a mid-sole is extruded with waste thermoplastic resin, pref. polyethylene resin made of waste agricultural films, added with 0.1-1 wt. % fiber scraps having a length of 0.1-3 times to the thickness of the strip to be extruded. A rolled non-woven fabric having the thickness of 1-10 mm is spread and thermally set on both the top and bottom surfaces of the extruded strip which is kept on heating at the temp. of 130-135 deg. C. The non-woven fabric is manufactured by bonding the mixture of 80 wt. % polyester filaments having 1.3 denier and 38mm in length and 12 wt. % viscous rayon with 8 wt. % acrylic resin.

Description

신발보강재의 제조방법Manufacturing method of shoe reinforcement

제1도는 본 발명에 의한 보강재 제조공정도의 한 예임.1 is an example of a manufacturing process chart of the reinforcing material according to the present invention.

제2도는 본 발명에 의하여 제조된 보강재의 단면도임.2 is a cross-sectional view of the reinforcement produced by the present invention.

제3도는 본 발명의 또 다른 실시예.3 is another embodiment of the present invention.

제4도는 종래 제품의 단면도이다.4 is a cross-sectional view of a conventional product.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 중앙층 2,2' : 상하표층부1: center layer 2,2 ': upper and lower layer part

3 : 단섬유사 4 : 단섬유포3: short fiber yarn 4: short fiber cloth

5 : 발포층5: foam layer

본 발명은 신발중창용으로 사용 가능한 열가소성수지, 폐섬유 및 단선유사를 이용한 신발 보강재의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a shoe reinforcement using a thermoplastic resin, waste fibers, and wire-like yarns usable for shoe soles.

신발은 구성상 갑피, 중창, 밑창이 일체로 구성되었을때 완성되며, 그중에서 중창은 갑피와 밑창이 연결되어 신발의 형상을 유지하고 내외의 충격에 견디도록 하는 대단히 중요한 부분이다.The shoe is completed when the upper, midsole, and sole is composed in one piece, among which the midsole is a very important part to maintain the shape of the shoe and withstand the impact of the inside and outside by connecting the upper and the sole.

종래에 이중창을 제조함에 있어서는 폐섬유류를 길이 0.1∼10mm 정도로 잘게 분쇄하여 수중분산시켜 분산액에서 일정한 판상의 형태로 얇게 펼쳐놓은 후 폴리에틸렌이나 PVC등의 수지 펠렛을 고루게 분포시켜 그대로 가열 압축시켜 일정형태의 판재를 만든다. 이 경우에 PVC등이 열용융되면서 섬유소간에 접착역할을 하여 냉각후에는 판상 구조가 유지 되어지는 것이다.Conventionally, in manufacturing double glazing, waste fibers are finely pulverized to about 0.1 to 10mm in length, dispersed in water, and spread out thinly in the form of a uniform plate in a dispersion, and then evenly distributed by resin pellets such as polyethylene or PVC, and uniformly heated and compressed. Make plate. In this case, the PVC is thermally melted and serves as an adhesive between the fibers, so that the plate-like structure is maintained after cooling.

이와같은 종래의 구조체는 제4도와 같이 벌크상 섬유뭉치가 노출되여져 있으며, 결착력이 좋지 아니하여 신발이 물에 젖거나 힘을 크게 받으면 구조가 흩으러져 결국 신발전체가 사용불가능하게 되는 단점이 있었다. 한편으로는 갑피나 밑창과 결합하는 경우 결착력이 좋지 아니하여 실로 꿰매었을 때보다도 쉽게 파손되는 것은 물론 생산성의 면에서도 단점이 되어왔었다.Such a conventional structure is exposed to a bulk fiber bundle as shown in Fig. 4, the binding is not good, the structure is scattered when the shoe is wet with water or if the force is greatly increased, eventually the entire shoe is not available. there was. On the other hand, when combined with the upper or outsole, the binding force is not good, it is more easily damaged than when sewn with thread, and also has been a disadvantage in terms of productivity.

그러나 폴리에틸렌이나 PVC, 폴리프로필렌의 사용량을 증가한다면 내습성등에서는 향상된 특성을 보일수 있으나, 가죽으로된 갑피나 고무류등의 재질로 되는 밑창과의 접착력이 극히 불량한 단점이 있어서 이들 합성수지류의 사용량에도 극히 제한되어 왔었다.However, if the amount of polyethylene, PVC, or polypropylene is increased, it may show improved characteristics in moisture resistance. However, the adhesive strength with soles made of leather uppers or rubbers is extremely poor. It has been extremely limited.

본 발명은 이상의 단점들을 보완하고자 합성수지를 다량 사용하여 내구성과 내수성을 높이되 갑피나 밑창과 접착력이 개선되도록 미세단사가 중창의 내외면에 노출되도록하고 상하표층부에 단섬유포를 부분결합시켜 준 결과 대단히 우수한 접착력, 내구성 및 내수성이 있는 중창이 생산되도록 한 것이다.The present invention is to improve the durability and water resistance by using a large amount of synthetic resin in order to compensate for the above disadvantages, so that the fine single yarn is exposed to the inner and outer surfaces of the midsole so as to improve the upper or the sole and the adhesive force, and the result of combining the single fiber cloth in the upper and lower surface layers It is intended to produce a midsole with excellent adhesion, durability and water resistance.

본 발명의 일실시예로서 신발용 중창의 제조공정은 다음과 같다.As an embodiment of the present invention the manufacturing process of the shoe midsole is as follows.

(제1공정)(Step 1)

본 발명에서 사용가능한 합성수지류는 폴리에틸렌이며, 특히 농업용 필름으로 폐기되거나 식품포장재등에서 사용후 폐기되는 각종 폐합성수지류를 대량으로 사용할 수 있다. 합성수지류는 장기간 광선등에 노출되어 고분자간에 결합력이 약화되어 있으므로 재생에는 반드시 열용융과 가압에 의한 고분자간의 재배열에 의한 결합력 보강이 필요할 것이며 본 발명은 압출과정에서 이와 같은 문제점이 해소된 것이다. 합성수지의 펠렛과 폐합성수지펠렛을 압출을 위한 호퍼에 가한다.Synthetic resins usable in the present invention is polyethylene, and in particular, it is possible to use a large amount of various waste synthetic resins discarded after being used as agricultural films or used in food packaging materials. Since synthetic resins are exposed to light for a long time and the binding strength between the polymers is weakened, regeneration must be performed by reheating the polymers by thermal melting and pressurization, and the present invention solves such problems in the extrusion process. Pellets of synthetic resin and waste synthetic pellets are added to the hopper for extrusion.

(제2공정) 응융균질화 공정(Second Step) Solidification Homogenization Step

상기한 합성수지의 중량에 기초하여 폐섬유류 혹은 폴리에스터등의 해섬한 단섬유사(0.1∼1.0중량%)를 함께 혼합하여 합성수지 펠렛내에서 균질화한다.On the basis of the weight of the synthetic resin described above, fine fibers (0.1 to 1.0% by weight) of fine fibers such as waste fibers or polyester are mixed together and homogenized in the synthetic resin pellets.

단섬유사의 길이는 압출판재의 생산두께에 따라 규정되는데 바람직하게는 판재두께의 약 0.1 내지 3배 범위의 길이를 갖는 것이 알맞다.The length of the short fiber yarn is defined according to the production thickness of the extruded plate material, and preferably, the length of the short fiber yarn is in the range of about 0.1 to 3 times the thickness of the plate material.

(제3공정) 압출공정(3rd process) Extrusion process

단섬유사와 합성수지 펠렛들이 균질화되면 이것을 압출용 호퍼에 가하여 놓고 합성수지의 가소화온도를 유지시켜 T-다이를 통하여 일정한 두께로 압출한다. 이단계에서 T다이발출시 부분냉각 고화된다.When the homogeneous short fiber yarn and the resin pellets are homogenized, it is added to an extrusion hopper and maintained at the plasticizing temperature of the synthetic resin to be extruded to a constant thickness through the T-die. In this step, partial cooling is solidified when T die is ejected.

(제4공정) 단섬유포의 접착공정(4th step) adhesion process of short fiber cloth

제3공정을 통하여 나온 압출물이 냉각고화되기 전에 압출형태가 가소상태를 유지하도록 T-다이의 배출구에서 열풍기를 이용하여 상하표면을 계속 가열하면서 1.0∼10mm의 롤 형태의 단섬유포(4)를 별도의 기구로 압착시켜 부착한다. 이때에 단섬유포의 각각의 섬유들이 압축판재상 하표층부(2)(2')에 일정한 깊이(예, 0.1∼1mm)로 침투하여 상하표층부(2)(2') 단섬유사와 얽혀지거나 압출판재의 수지와 표면부에서 접착되어 냉각후에는 대단히 강한 형태를 유지하는 것이다. 단섬유포는 특히 굵기 1.3데니아, 평균길이 38mm를 갖는 폴리에스터 80중량%와 비스코스레이온 12중량%를 아크릴수지 8중량%로 접착시킨 것을 사용한다.Before the extrudate from the third process is cooled and solidified, 1.0 to 10 mm roll-shaped short fiber cloth 4 is opened while continuously heating the upper and lower surfaces using a hot air blower at the outlet of the T-die so as to maintain the plasticity. Press and attach with a separate device. At this time, each of the fibers of the short fiber cloth penetrates into the lower surface layer portion 2 (2 ') on the compressed plate material at a constant depth (for example, 0.1 to 1 mm) to become entangled with the upper and lower surface layer portions (2) and 2' short fiber yarns or extruded plate material. It is adhered to the resin and the surface of the resin to maintain a very strong form after cooling. The short-fiber cloth is used by bonding 80 weight percent polyester and 12 weight percent viscose rayon with an average thickness of 38 denier and an average length of 38 mm with 8 weight percent of acrylic resin.

이와같은 공정의 거친 압출물은 제2도에 도시하듯이 단섬유포(4)가 상하표층부 (2)(2')에서 기존의 단섬유사들과 밀접하게 열결되어져 있는 구조를 이루며 한편으로는 대량의 합성수지 사용으로 수분이 내부의 단섬유사에 침투하여 질 수도 없는 것이다.As shown in FIG. 2, the rough extrudate of such a process has a structure in which the short fiber cloth 4 is closely connected with the existing short fiber yarns in the upper and lower surface layers 2, 2 '. The use of synthetic resins prevents water from penetrating the internal short fiber yarn.

본 발명에 의하여 생산된 신발용 중창은 중앙층(1)에 내재되는 단섬유사(3)와 상하표층부(2)(2')의 단섬유사(3)가 얽혀지며, 이어서 상하표층부(2)(2')의 단섬유사(3)는 다시 그 위의 단섬유포(4)의 섬유사들과 얽히게 되어 강한 결합력을 보여주는바, 구두등의 갑피재질인 인조레져, 가죽등과 접착제에 의하여 접착시키는 경우 단섬유포(4)의 단섬유사들이 접촉매개 역할을 하여 강한 결합력을 보일 수 있는 것이다. 즉, 섬유사가 접착제와 단위 면적당 접촉면적이 증대되는 역할을 하므로서 단순한 평면압출의 경우와는 달리 접착제에 의한 결합이 수십배 내지 수백배 증대되어져 목적하는 용도를 다양하게 이용될 수 있는 것이다.The midsole for shoes produced according to the present invention is the single fiber yarn 3 inherent in the center layer 1 and the short fiber yarn 3 of the upper and lower surface layers 2, 2 'are entangled, and then the upper and lower surface layers 2 The short fiber yarn 3 of 2) is entangled with the fiber yarns of the short fiber cloth 4 thereon, and shows strong bonding strength. The short fiber yarn 3 is bonded to the artificial leather, leather, etc. If it is to be a short fiber yarns of the short fiber cloth (4) is to act as a contact medium can show a strong bonding force. That is, the fiber yarn plays a role of increasing the contact area per unit area with the adhesive, unlike the case of simple flat extrusion, the bonding by the adhesive is increased by several tens to several hundred times, and thus can be used in various purposes.

(제5공정) 발포수지접착(Step 5) Foamed resin adhesion

본 발명에 의한 생산물은 그대로 사용될 수도 있으나 제3도에 도시하듯이 발포수지층(5)(예, 나일론, 폴리에틸렌)등의 저발포층을 결착시켜 내충격성이 좋은 제품으로 할 수도 있고, 발포수지층(5)의 표면부에 각종 무늬를 현출시키면 그대로 실내 장식품으로도 사용 가능한 것이다.The product according to the present invention may be used as it is, but as shown in FIG. 3, a low-foaming layer such as the foamed resin layer 5 (e.g., nylon or polyethylene) may be bound to a product having good impact resistance, or foamed water. If various patterns appear on the surface portion of the ground layer 5, it can be used as an upholstery as it is.

또한, 본 발명의 중앙층(1)을 저발포시켜서 사용할 수도 있으며 이들은 모두 본 발명의 범주에 속한다.In addition, the middle layer 1 of the present invention can also be used with low foaming, all of which belong to the scope of the present invention.

본 발명의 보강재는 제2도에 도시하듯이 미세한 단섬유사(3)들이 중앙층(1)에는 성글게 필요한 지지역할을 충분할 정도로 분포하나 표층부(2)(2')에는 단섬유사가 비교적 고밀도로 침투 고정되어 내부 단섬유사와 망체로 얽히거나 강한 접착을 이루고 이것에는 다시 단섬유포(4)가 얽히게한 연속 구조로 되어 강한 결합력을 보인다.In the reinforcement of the present invention, as shown in FIG. 2, the fine short fiber yarns 3 are distributed to the center layer 1 with sufficient spacing, but the short fiber yarns are relatively high density in the surface layer portions 2 and 2 '. Penetration and fixation is entangled with internal short fiber yarns and meshes, or a strong adhesion, and this is a continuous structure in which the short fiber cloth (4) is entangled again, showing a strong bonding force.

본 발명의 또다른 실시예로 제3도에 나타나듯이 발포층(5)을 접착시키면 발포층의 내부에 단섬유사(3)들이 침투되어 종래의 단순한 접착층만에 의한 접착보다 획기적으로 증대되는 것이다. 따라서, 필요한 무늬가 현출된 발포수지를 어떠한 재질이라도 접착가능하기에 그 용도는 바닥장식재, 벽지, 단열재등 모든 면에서 이용될 수 있는 것이다.In another embodiment of the present invention, as shown in FIG. 3, when the foamed layer 5 is adhered, short fiber yarns 3 penetrate the inside of the foamed layer, which is significantly increased than the conventional simple adhesive layer. . Therefore, since any material can be adhered to the foamed resin in which the necessary pattern appears, its use can be used in all aspects such as flooring materials, wallpaper, and insulation.

Claims (1)

폴리에틸렌수지와 해섬한 섬유를 일정비로 배합 가소화한 것을 압출 성형한 후 표면부에 부직포를 부착하는 신발보강재의 제조방법에 있어서, 페폴리에틸렌수지의 중량에 기초하여 압출될 판재의 두께의 0.1 내지 3.0배의 길이의 단섬유사를 0.1 내지 1.0중량%첨가하여 압출성형하되 냉각고화되기전 열풍기로 상하표면을 130 내지 135℃로 가열하면서 굵기 1.3데니아, 길이 38mm를 갖는 폴리에스터 80중량%와 비스코스 레이온 12중량%를 8중량의 아크릴수지로 접착시킨 1.0 내지 10mm두께의 롤 형태의 단섬유포(4)를 압착시켜 상하표층부(2)(2')에만 결합하도록 하는 것을 특징으로하는 신발보강재의 제조방법.In the manufacturing method of the shoe reinforcing material to extrude the plasticized compounding of the polyethylene resin and the spun fibers in a certain ratio, and then attach the nonwoven fabric to the surface portion, 0.1 to 3.0 of the thickness of the plate to be extruded based on the weight of the pepolyethylene resin Extrusion is performed by adding 0.1 to 1.0% by weight of short fiber yarn of pear length, but 80% by weight of polyester having a thickness of 1.3 denier and 38 mm in length and viscose rayon while heating the upper and lower surfaces to 130 to 135 ° C. with a hot air fan before cooling and solidifying. A method of manufacturing a shoe reinforcement, characterized in that the short fiber cloth (4) having a roll shape of 1.0 to 10 mm thickness bonded with 8 weight of acrylic resin is bonded to only the upper and lower surface layers (2) and (2 '). .
KR1019920001007A 1992-01-24 1992-01-24 Method for manufacturing shoes reinforcement and that reinforcement KR950007770B1 (en)

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