Out soles technology

Out soles technology (98)

EVA material ,as a well known Eco-freindly material created by human last century is now can not only be made into outsoles or some other ,
it could be also shaped into home decor things.

Such as indoor play mats, as we know play mat needs a good softness and good quality . Besides this ,the most important thing is No toxic and Eco friendly , because most infants would like to crawl on the play mats especialy when they are withn 1 month to 24 months. So Eco-freindly play mats will no harm baby's healthy.

And we all know that baby are curious about everything even to play mats on the floor, they may bit play mats when they are on it, so if you buy a bad quality mat to your baby, it is very dangerous when baby eat the craps of play mats , so you have to be consious enough when you are buying.

If you find a good seller such as  GOGOSO PLAY MAT   it avoid many problems.

  • T20QX9XyhXXXXXXXXX_!!1652960096


Monday, 28 April 2014 03:10

Shoe and outsole therefor patent

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DESCRIPTION  (OCR text may contain errors)
  • Jan. 5, 1943. J. GREGG 2,307,401
  • SHOE AND o uTsoLE THEREFOR Filed Jun 15, 1940- nventor G R E 36 zum.'
  • (Ittomeg Patented Jan. 5, 1943 2,307,401 SHOE AND OUTSOLE THEREFOR Jon Gregg, Flemington, N. J., assignor, by mesne lassigmnents, to Rope- Soles, Inc., New York,
  • Application June 15, 19m, Serial No. 340,636'
  • 3 Claims.
  • This invention relates to footwear and more particularly to shoes, slippers, etc., having flat soles formed of bands of braided or plaited iibrous material.
  • One object of the invention is to provide an article of footwear of the designated class with an outsole formed of plaited fibrous material such, for example, as jute or any other suitable vegetable fibre in the form of a flat rope-like band disposed in the outsole with portions of the band adjacent each other in side by side relation and secured in said relation to form a unitary structure constituting said outsole.
  • It is also an object of the present invention to provide an outsole formed of a rope-like band of jute or suitable fibrous material having portions disposed in adjacent side by side relation and united with each other by interposed films, layers or coatings of latex or the like whereby to eliminate the necessity for stitching the several portions oi' the fibrous band in sole-defining relation.
  • Another object of the invention is the provision of an outsole formed of braided or plaited jute or the like in the form of a rope-like band having a fiat oval or oblong cross section whereby to provide the outsole with'a flat upper surface and also preferably with a flat Vlower or tread surface so that the shoe to which the outsole is secured can be worn with a maximum of comfort without the necessity for an insole or other inner covering other than a sock lining if desired.
  • A yet further object of' the invention is generally to provide an improved rope sole and articles of footwear of the designated class having outsoles of the type described. v
  • 'I'he above objects of the invention and other objects ancillary thereto will be fully understood from the following description considered with reference to the accompanying drawing which, however, is to be considered as illustrative of the invention but not in limitation thereof.
  • In the drawing:
  • Fig. 1 is a side view of a shoe provided with an outsole embodying the present invention:
  • Fig. 2 is a sectional view on the line 2-2 of Fig. 1;
  • Fig. 3 is a side view of a shoe. such as a slipper, provided with an outsole embodying the present invention: e
  • Fig. 4 is a plan view of an outsole made in accordance with the present invention;
  • Fig. 5 is a diagrammatic view illustrating the manner of forming the,` outsole from a band of fibrous material:
  • Fig. 6 is a perspective view of a portion of theband of fibrous material, and also illustrates more or less diagrammatically the application of the films or layers of latex to the opposite sides of the band.
  • Referring now to the drawing in detail, Fig. 1 shows a shoe having an upper I0 and provided with a flat outsole I2 formed of braided or plaited fibrous material such, for example, as jute. The inner marginal edge portions I4 of the upper are secured to the outer marginal edge portions of the upper surface of outsole I2 completely therearound, and a suitable covering such as a sock lining I 6 preferably substantiallycoextensive with the inner surface of the bottom of the shoe is disposed over said marginal edge portions I4 of the upper and over the upper or inner surface of the outsole". The shoe shown in Fig. 3 is oi substantially the same construction as the shoe illustrated in Fig. 1 except that the upper is of the open or strap type for which purpose strap portions Ilia and Illb are provided and their opposite marginal edge portions are secured to the outer marginal edge portions of the outsole in the same manner as indicated at Il in reference to upper I0. As here shown, a sock lining I6 is provided on the upper surface of the outsole. The marginal portions I 4 of upper I0 and the similar portions of the upper of the shoe shown in Fig. 3 are preferably secured to the outsole by latex or the like.
  • Outsole I2 will now be more fully described first with particular reference to Figs. 2 and 4 to 6. As here shown, said outsole is formed from a rope-like band of fibrous material such as braided or plaited jute or similar brous material or of any other suitable fibrous material, said band being of fiat oval or oblong cross section, a portion of the band indicated by the numeral I8 being illustrated in Fig. 6. By reference to Fig. 4 it will be noted that band I8 is disposed in the outsole in the form of convolutions, several of which as indicated at 20 and 22 are disposed in the forward part of the outsole without extending into the shank or rear part of the outsole. It will also be noted that several ccnvolutions as indicated at 24 and 26 are disposed only in the rear or heel portion of the outsole and do not extend forwardly into the shank or forward part of the outsole. The purpose of this construction is to-provide the forward and rear portions of the outsole in suitable widths so that the complete outsole will have a desirable and proper contour and shape whereby when the upper is attached to said outsole the `shoe will be properly shaped as in shoes which have molded or cut soles or outsoles diecut from leather or other outsole material. It will be observed that band I8, while disposed in the outsole with said forward and rear convolutions, is wound continuously peripherally for the full extent of the outsole. Thus, as here shown,
  • . one end of the band I8 is indicated at 2'8 while the other end of the band IB is indicated at 3D at a point on the periphery of the outsole.
  • Said band I8 is coated on both sides thereof with films or layers 32 and 34 of latex but only one side is thus coated for the full length of the band, the other side of the band being uncoated in the portion thereof which forms the outer peripheral convolution 36 of the outsole. Thus, the outer peripheral edge 38 of the outsole is uncoated. The means for applying the latex films or layers to band I8 are constituted by nozzles NI and N2 whichdnay be parts of spray guns.
  • In accordance with the present method of producing the outsoles from bands I8, said bands are preferably provided in pre-cut lengths in accordance with the sizes of the outsoles to be formed, it being, therefore, understood that the lengths of the bands will vary depending upon the sizes of the outsoles to be produced therefrom. The bands are coated as above described on one side thereof for the full length of the band, the other side being also coated except in thev portion which forms the outermost convolution 36, which is left uncoated. While the latex film or coating is still liquid or semi-liquid said band is wound as described above for disposing the several portions thereof in outsole-defining relation. In Fig. 5 the manner of winding'band I8 is illustrated diagrammatically. Thus, as here shown said band I8 is placed on a table T provided with upstanding pins 40 and 42 in positions corresponding to the forward part of the outsole'and with pins 44 and 4B corresponding to the rear or heel portion of the outsole. It will be understood that companion pins 40, 42, and 44, 46, respectively, are positioned in variable spaced relation depending upon the sizeof the outsole being produced. In winding the band for forming the outsole the inner end 28 thereof is disposed adjacent pin 4|] and portions of the band are wound around the pins 40 and 42 for forming a plurality of convolutions such as the convolutions 2li and 22. Thenthe band is directed lengthwise of the sole through the shank portion thereof and is wound around the companion pins 44 and 46 to form a plurality of convolutions, for example, the convolutions 24. and 26 referred to above in reference to Fig. 4, and thereafter the remaining portions of the band is disposed in convolutions until the entire length of the band is consumed and the outsole formed, the outermost convolution being indicated at 36. Thereafter the outsole thus formed is placed in a suitable mold for shaping the same and forholding lthe convolutions in sole-defining relation until the latex films 32 and 34 dry for securing the adjacent portions of said band firmly to each other.
  • The outsole as thus described is well adapted to accomplish the related objects of the invention as hereinbefore referred to and it will be noted that the outsole thus produced has a flat upper surface and also a fiat lower surface. I The bands of fibrous material from which the outsole is formed are preferably braided or plaited having a plurality of strands braided together in flat formation. Said bands are oblong in cross section or of fiat oval shape in cross section and are disposed in the outsoles so that the width of the band lies in the direction of the thickness of the outsole. It will be understood that the bands while sufficiently dense to provide a strong outsole are' fiexible whereby the outsole produced therefrom may be flexible. The flexibility of the outsole is assured by uniting the adjacent porer surface of the outsole.
  • tions of the band to each other by the interposed films or layers 32 and 34 of latex or the like. It will be observed that said films of latex are preferably narrower in widththan the sides of the band to which said films are applied, for the purpose of avoiding coating of the opposite edges of the band or the corresponding upper and lowalso that since the material of bands I8 are of fibrous rope-like material the outsole formed therefrom as h ereinbefore described is relatively porous, thus to keep the wearers feet cool and to provide a comfortable shoe.
  • While I have shown and described the preferred construction of the outsole, it will be understood that the invention may be embodied and practiced otherwise than las here specifically illustrated or described, and that certain changes in the details ofV construction of the outsole and in the shoe provided therewith may be made without departing from the spirit of the invention. Accordingly, I do not wish to be limited to the invention asherein specifically shown or described except to the extent which may be required by the scope of the appended claims.
  • Having thus described my invention, what I claim and desire to secure by Letters Patent is:
  • l. As a new article of manufacture, an outsole ,comprising a fiat body formed of a plurality of convolutions of a band of porous fibrous material and having portions disposed in adjacent side by side relationgand united to each other by interposed layers of adhesive, said band being positioned in the sole so that the width of the band extends in the direction of the thickness of the sole, at least part of the thickness of said band between the opposite sides thereof being free from said adhesive and bein g substantially porous, said layers of adhesive terminating at their lower edges inwardly of the bottom of the sole.
  • 2. A shoe comprising an upper and an outsoleV secured thereto, said outsole comprising a fiat body formed of a. plurality of convolutions of a band of fibrous material and having portions disposed in adjacent side by side relation, said YAband being positioned in the sole so that the width of the band extends in the direction of the thickness of the sole, said portions being united to each other by interposed layers of latex, said band portions between said layers of latex being substantially free from latex and being inherently porous, said layers of latex having their lower edges terminating short of the lower edges of said convolutions of the band of fibrous material in the sole.
  • 3. A shoe comprising an upper and an outsole.
  • ly porous, said layers of latex having their lower edges terminating short of the lower edges of said convolutions of the band of fibrous material in the sole, the outer surface of the outermost convolution of said rope band defining the peripheral edge of said outsole and being free from.
Sunday, 20 April 2014 09:04

Polyurethane Systems for Outsosle

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Polyurethane Systems for Soling

  • Polyurethane systems for footwear soling can be based on either polyester or polyether polyols. These two system types have individually unique performance characteristics, and system selection is determined by end use of the shoe sole product. Polyesters tend to be cheaper, lower in viscosity, and more reactive. Polyether polyols tend to give better abrasion and chemical resistance properties, are higher in viscosity, and are typically higher priced. Polyester polyols are common in the Coatings, Adhesives, Sealants and Elastomers (CASE) polyurethane applications. The shoe sole industry is one area where some applications use polyester polyols to achieve the desired physical properties. Based upon Chem-Trend’s experience, and abilities to customize products based on customer need we can make adjustments to the mold release chemistries to provide better release properties and improved surface finish (uniformity, gloss, etc.) as required by the customer.
  • Polyester systems are generally fast to react due to the fact that they are solid at room temperature and must be heated prior to use. The need for elevated temperatures to maintain a liquid form can make handling of polyester polyols difficult. Since the foam system is heated, mold temperature and cure times are generally reduced. Another advantage is that polyester systems are less expensive than a polyether system.  However, soles made with polyester polyols are less durable and can be susceptible to biological (bacteria/fungi) attack. These attributes are best suited to footwear markets with rapidly changing designs and where consumers frequently purchase new footwear styles to keep up with current fashion trends.
  • Polyether based polyols are more resistant to oil and chemical attack and are more temperature resistant. The foam system is liquid at room temperature and does not require any special handling techniques. Molding temperature and cure time is usually increased (compared to polyester) for polyether-based foam systems. Soles manufactured with these foam systems are well suited to markets where durability is important, such as safety shoes.
Sunday, 20 April 2014 09:00

Outsole Manufacturing Solutions

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Shoe Sole Manufacturing Solutions

  • The various shoe-manufacturing techniques and can be broken down into four major categories. These categories are single density unit soles, dual density unit soles, single density direct attach, and dual density direct attach. Chem-Trend’s years of production floor experience working with shoe sole manufacturers around the globe has allowed us to understand and overcome the molding challenges found in each of these processes.
  • For single density unit soles, the polyurethane foam system is poured directly into the mold cavity (open pour) and a lid is secured over the cavity. At the completion of the cure cycle, the lid is removed and the completed part is de-molded. Single density unit soles are then attached to the upper material to complete the shoe manufacturing process. In many cases, single density unit soles are subjected to some type of post-mold operation to obtain the desired finished appearance on the part. Basic mold release agent requirements for this type of process include release performance, low build-up in the mold cavity, and compatibility with the post-mold finish operation and final shoe building process.
  • The dual density process requires bonding a midsole to an outsole in the same molding process. The outsole polyurethane foam is poured into the mold cavity, and a dummy last is used to close the mold. The dummy last is a type of false lid designed to cover the mold cavity, creating the proper thickness for the outsole while leaving room in the mold cavity for the midsole portion of the part. At the end of the outsole cure cycle, the dummy last is removed, and the midsole foam is poured on the backside of the outsole. A new lid is used to secure the mold, and a second cure cycle is completed. The molded soles may be subjected to post-mold finish operations and, as described above, are attached to the upper to finish the shoe. Release agent requirements for dual density unit soles are similar to those described for single density unit soles with one important difference: the mold release agent must be applied to the dummy last in order to separate it from the outsole. As a result, the release agent can be transferred to the outsole, but it must not interfere with adhesion between the outsole and midsole foam layers.
  • As the name suggests, the direct attach process is used to mold the sole directly to the upper material, eliminating the need for gluing or sewing to produce a finished shoe. Direct attach requires that the upper is secured to the top of the mold, and the polyurethane system(s) is injected into the mold cavity. For dual density direct attach, a dummy last is used to form the outsole, and the upper is secured into the mold prior to midsole injection. Scrap produced using a direct attach process is very expensive due to the fact that an entire shoe is wasted. It is also very difficult to complete a post-mold finish process on direct attach unit soles without affecting the upper portion of the shoe. For these reasons, mold release agent selection is critical. Direct attach mold release agents must produce a defect free urethane part, as well as impart a uniform gloss appearance. Gloss requirements are defined by the manufacturer, but can cover a broad range from low (matte) to high (shiny). Other important performance attributes for direct attach release agents include release, low build-up in the mold cavity, and dual density adhesion.
  • No matter what type of process you utilize in your shoe sole manufacturing operation, you can benefit from Chem-Trend’s extensive expertise in polyurethane molding, and our wide range of products developed to overcome the industry’s greatest challenges. Our products are designed to enhance your efficiency and reduce waste, providing you with higher quality soles and lower costs of operation.




Friday, 18 April 2014 13:40

New outsole tech of anti slip and anti cold

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       South China University of Technology has developed a new timber material soles, wet skid resistance and anti-icing slip rubber material to fill the shoes of high-end technology gaps.

       China's outsole in the early 20th century has achieved the industrialized production, but is limited by the production technology and process conditions, the main source of the material only a single soles of leather or natural rubber.
In 2011, South China University of Technology Material Co., Ltd. a joint Guangdong Provincial Science and Technology Department of Guangdong Province reported Combination project - wet skid resistance and anti-slip rubber material ice research and industrialization. Currently, the project has been declared national invention patents, utility model patents 1, 3 acdemic papers.

Tuesday, 15 April 2014 07:17

GEAR Slip-free boots with non-marking outsole

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Slip-free boots that are actually comfortable? It's possible with Bogs' Ultra High Men's boots. Originally designed for dairy farmers who need to stay safe on slippery surfaces and are often on their feet for hours at a time, these boots are made to last and can be great for any adventure. They're also stylish enough for a trip around town.

Rated to -40 degrees, they'll get you through the rest of winter with no problem. They'll also last well through a wet spring with their durable 100 percent waterproof rubber construction and 7-millimeter waterproof insulation.

They have a non-slip and non-marking outsole, with a rubber midsole for extra cushion and an antimicrobial insole that provides odor protection for sweaty feet.

Monday, 14 April 2014 09:16

What is a dual density Eva outsole on shoes?

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 What is EVA dual density sole

      Let me put it in a easy way, we all know that soles has mid sole and outsole, mid sole is softer than
because mid sole needs comfortability for feet while out sole needs anti-slip ability .A sole of 

combination of mid-sole and outsole with different density that is we call dual density shoe sole.long
long ago, there 
are no dual-density- outsole" saying,because most outsole manufacturers produced
 mid-sole and outsole 
separatly,but with the time goes by and technology upgrading we can produce
mid-sole and outsole at once.
So the mold would be a key point.

Method of manufacture dual density EVA sole

   The method for fabricating a dual-density mid-sole includes the steps of: injection molding EVA 
material of a first density into a block;
placing the first densityEVAblock and raw EVA material pellets
of a second density together in a mold cavity; and applying heat and
pressure to the first densityEVA
 block and raw EVAmaterial pellets of a second density in the mold cavity to form a fused component.
The fused component is shaped and detailed into the mid-sole in a separate mold cavity.

       The result is a dual-density mid-sole consisting 
of one or more blocks ofEVA material of a first 
density fused to EVA material of a second
 density where the size, shape and location of the different 
density sections can be accurately controlled and precisely defined. An article of 
footwear including
an upper,
the dual-density mid-sole consisting of one or more blocks of EVA material of a first density
fused to EVA
 material of a second density,and an outsole, may be formed.

   upper mold and the lower mold, the mold having a cavity with each other on the lower mold cavity, and then separately
on the cavity and the lower cavity in the home into the same type of foam expansion ratio, and then heating the mold is
closed the entire group, the upper 
and lower mold cavity of the type of foam material into a shape with the lower layer of
the upper layer; then open the exit of the mold die, then the upper 
die and the mold is closed, so that the upper and
lower tie to form a sole; then after the second heating, the sole reaches 150 ℃ ~ 180 ℃ temperature,
so a combination
of different foam material integrally; finally die set is fully open, to make double-foam molding foam soles soles.
Patent Drawing
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          Thermoplastic polyurethane is resistant to abrasion, low temperatures, tear and aggressive environments, adheres well to the surface, restores the form at a strain able to resist punctures fine, has a resistance to slip, can be manufactured with large lug soles. The disadvantages include high TPU material density, which in turn affects the weight and the elasticity of the finished product.

          The sole is made of this material is relatively poorly adheres to the top of the workpiece mounting method of injection. Material, as the name implies, is not resistant to high temperatures (80 C) - on sole simply melted, which makes it unsuitable for the manufacture of footwear, which means the operation in hostile temperatures: hot shop, hot asphalt, etc. . Strength attachment to the shoe upper is low. Equipment for the production of TPU soles rather expensive.

           Rarely used in footwear, as the above drawbacks (weight, thermal plasticity, stiffness, damping behavior, the high price) prevail over the positive characteristics.

Friday, 04 April 2014 06:11

Polyurethane material outsole

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            Polyurethane soles for footwear have several advantages. At relatively low density and low weight of the material of the sole working shoes have high strength characteristics, abrasion resistance, resistance to flexing, perfectly fastened to the leather upper. Pores of polyurethane soles work shoes are very small and are not connected with each other. The disadvantage is the undesirability of making soles with large and deep lugs - a high probability of breaking the sole.

             Positive characteristics provide high thermal insulation properties and water resistance of shoe soles. Thermoplastic material is relatively smudge-resistant - does not leave any marks on surfaces. PU sole is relatively cheap compared with other types of soles, has MBS and KHS - properties. Buying working footwear with PU outsole, guided by wearing in the warmer months, since this material is not frost resistant and quite slippery, more slippery only monolithic dual-layer PU sole PU / PU. Frost-resistant polyurethanes - largely just advertising producers of raw materials.

Friday, 04 April 2014 06:08

what material is best for footwear outsole?

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      what material is best for footwear outsole?

         There is nothing better than to walk barefoot on wet grass, in nature. However, our ancestors were of a very different opinion and a set of primitive materials used to protect the soles of the feet of a hostile environment. Since then, much time has passed and things have changed: the aggressive environment, growth needs and pace of development of science contributed to the emergence of new materials to protect your feet. Sole - one of the key elements of the shoe - the base and the platform for the feet, which comes into direct contact with the surface.
        Dosole offers the possibility of buying wholesale footwear with various protective soles.

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