This technology tries hard to manufacture the footwear that waterproof is breathed freely again.The early stage effort of manufacturing footwear like this comprises: manufacture by the footwear that form such as the sole that is processed into the such upper material of Waterproof leather and made by rubber.Therefore, reached gas permeability to a certain degree.But there is a lot of problem in the structure of this type of shoe.If upper material is made complete waterproof, it has just lost permeability.In addition, the join domain between waterproof sole and upper material becomes main source of leaks, because do not have effective method to make join domain make waterproof.
To reaching another alternative method of comfortable waterproof footwear target, relate to and use the insert of waterproof or foot cover to put in shoes.As known in row, the method is particularly useful in the footwear by machine shoe last or hat block system.If suitable material structure for the insert of this waterproof, has the attendant advantages that can see through water vapour, so, when wearing shoes, along with passage of time, can water accumulation steam in shoes.In footwear industry, can waterproof again can permeable steam material be commonly referred to as " function " material.So the example of functional material is microporous, expanded polytetrafluoroethyl,ne diaphragm material, and it can be from Gore W. L. & Ass GmbH of Maryland State Elkerton (W.L.Gore and Associates, Inc.) with trade (brand) name
buy.Other functional material also develops, and it is interior well-known to be expert at.
Other method comprises: the inner side that by shoe last or hat block technique processed, waterproof, breathable gasket material is fixed to footwear upper of a shoe; And by gasket material seal to liner or the interior end of waterproof.People have made effort that many kinds the are different location that the end is connected in the liner of gasket material and waterproof or footwear to be provided the sealing of durable, waterproof or is connected.These effort have obtained success in various degree.
When forming the footwear that so waterproof is breathed freely again, the normal problem occurring is, the insertion of liner or foot cover usually causes shoes not fit (, because liner inserts the upper of a shoe of fixed size, cause shoes to press against one's foot) and/or liner or foot cover and upper material between attached variation, this outward appearance that especially causes footwear inside desirable not to the utmost (that is, liner crumple or depart from from upper of a shoe).
Additional problem is in addition, uses traditional water resistance gasket uneconomical economically in shoe construction, because need to add additional treatment step in order to obtain fire resistance characteristic.
Therefore, people also continue to find durable, sealing, waterproof, ventilative, without the footwear of pad, it is in use soft, and economical cheap during fabrication.
Summary of the invention
Describe and there are the waterproof of upper of a shoe assembly and sole assembly, ventilative shoes herein.Upper of a shoe assembly comprises upper and lower, and upper and lower has respectively exterior material and one or more air-permeable layer, and air-permeable layer forms foot cover, and comprises the functional layer of at least one waterproof.The bottom of upper of a shoe assembly also comprises the non-functional device that keeps upper of a shoe element shapes.This non-functional device is connected to one or more air-permeable layer, and air-permeable layer comprises the functional layer of at least one waterproof.
In addition, sole assembly comprises outer bottom, an air-permeable layer or multiple air-permeable layer that it comprises the bottom of exterior material and scatters upper of a shoe therein.It also comprises is convenient to polymer mobile device in whole sole assembly, forms the sealing of waterproof so that the bottom of sole assembly and upper of a shoe assembly is bonded together.
In other alternative embodiment, the device of being convenient to polymer flow can be interval insulant, the interior end or interval insulant/composite members of the interior end.This non-functional device can be Shi Duobao (strobel) plate or elastomeric material or textile, maybe can draw side.
Air-permeable layer also can comprise one or more extra plays, and it is suitable for forming the sandwich with water-proof function layer.
Water-proof function layer can be comprised of following material: polyurethane, polyester, polyethers, polyamide, polyacrylate, copolyether ester, copolyether amide, polytetrafluoroethylene (PTFE), their combination etc.
In additional embodiment, the waterproof and breathable shoes with upper of a shoe assembly, the middle end and outer bottom to be described herein.Upper of a shoe assembly comprises upper and lower, and upper and lower has respectively exterior material and one or more air-permeable layer, and air-permeable layer forms foot cover, and comprises the functional layer of at least one waterproof.The bottom of upper of a shoe assembly also comprises the non-functional device that keeps upper of a shoe element shapes.This non-functional device is connected to one or more air-permeable layer, and air-permeable layer comprises the functional layer of at least one waterproof.
The middle end comprise distribution upper of a shoe therein ventilative exterior material bottom and be convenient to polymer mobile device within the whole middle end, so that the bottom of the middle end and upper of a shoe assembly is bonded together, form the sealing of waterproof.
Outer bottom is suitable for being attached to the middle end.
The specific embodiment
The present invention relates to the method for waterproof footwear and making waterproof footwear.Different from the footwear of traditional WPB machine shoe last or hat block system, disclosed shoe construction of the present invention is without pad.That is, footwear of the present invention contain function liner, this function liner be without pad or on the whole bottom of foot cover, do not there is functional material.On the contrary, it provides the space between at least a portion of upper of a shoe assembly 10 and at least a portion of sole assembly 20, so that be convenient to the mobile device of polymer 100, impel polymer or other binding agent to flow through this device, thereby the sealing between upper of a shoe assembly and sole assembly is provided.In addition, polymer or other binding agent can be used to be made into the optional middle end 240, and like this, outer bottom can be undertaken attached afterwards by known method in row, and the part that maybe can be used as sole assembly is made into complete outer bottom.Because do not use traditional pad or foot cover completely, so, this causes the improvement of plant produced, and the production of factory comprises the raising of material, labour, energy and stock and productivity ratio, reduces specifically production stage, takes up an area space and total production time.
Forward Fig. 1-6 to, upper of a shoe assembly (its composition will describe in detail hereinafter) is mainly to comprise top 30 and bottom 40.These parts comprise respectively at least one water-proof function layer 70 and the parts of at least one extra play 60 as liner 230.
Forward Fig. 7 to, gasket material 230 shown in figure, this gasket material has the top 140 of opening and the bottom 150 of opening.Optional seam 160 is also shown in figure, and at this seam crossing, two gasket materials can link together, gasket material is formed as to the overall correspondingly-shaped of footwear uppers.Each of gasket material can link together by methods such as stitching, part stitching, welding, gummeds.When each liner is stitched together, can by use such as
the known encapsulant of band (being produced by Gore W. L. & Ass GmbH) carrys out sealing joints 160, and seam is made to waterproof.Other sealant also can be coated to seam, so that seam becomes waterproof (if seam is due to welding or gummed rather than intrinsic waterproof).Gasket material 230 comprises at least material of one deck waterproof and permeable steam (that is, functional layer), and such as ventilative polymer film, it is known as the functional layer 70 of waterproof.As used in the text, " permeable steam " and " breathing freely " are used interchangeably, and mean that functional layer has the 200m of being less than
-1water vapour coefficients R et.Water vapor permeability is tested with Hohenstein skin model.The method is at DIN EN31092(02/94) or ISO11092(19/33) in have description.Breathable polymeric membrane can or become ventilative by dissolving diffusion mechanism by means of pore in film.Breathable polymeric membrane can be selected from following material: polyurethane, polyester, polyethers, polyamide, polyacrylate, copolyether ester and copolyether amide class.In one aspect of the invention, the film of waterproof, permeable steam is microporous poly tetrafluoroethylene.In another aspect of this invention, many microporous poly tetrafluoroethylenes are expanded polytetrafluoroethyl,ne, just as authorized, in the United States Patent(USP) Nos. 3,953,566 and 4,187,390 of Gore, introduce.So expanded polytetrafluoroethyl,ne film by Gore W. L. & Ass GmbH of Maryland State Elkerton with trade (brand) name
fabric is produced.In participation mode, introduce the main contents of these two United States Patent (USP)s herein.
At least one other material 60 that gasket material contains at least above-mentioned functional material 70 and is laminated thereon.In this, liner can comprise functional material and textile material (being contemplated to be ventilative), and the stacked or alternate manner of textile material is attached at least one side, is often attached on its both sides.The stacked suitable binder of conventionally utilizing discontinuous pattern is implemented.Therefore, permeable steam characteristic is substantially uninfluenced.At least one other material can be textile fabric.Textile fabric can be braiding, knitting, grid, nonwoven, felt structure etc.Textile can be from such as producing the such natural fiber of cotton, or produce from the synthetic fibers such as polyester, polyamide, polypropylene, polyolefin or their mixture.In one aspect of the invention, textile fabric be laminated to functional material by that side contacting with the exterior material of upper of a shoe 50.In another aspect of this invention, textile fabric is laminated to facing in that side of footwear inside of functional material.Of the present invention, also have on the other hand, textile fabric is laminated on the both sides of functional material, therefore, provides three layers of gasket material.The suitable exterior material of upper of a shoe comprises leather, Cole Di Youla viscose (cordura), nylon etc.
Fig. 7 illustrates the device of the shape 80 for keeping upper of a shoe assembly 10.This device is the shape of sole conventionally, and it is attached to by means of known any appropriate method in row the functional layer that waterproof is breathed freely again, and suitable method for example comprises stitching.The device that is used for the shape that keeps upper of a shoe assembly can be any suitable material, and it can be fixed to the functional layer that waterproof is breathed freely again at 150 places, the bottom of opening, and has enough resistance to compression, to keep the shape of upper of a shoe assembly, forms foot cover.The device that is used for the shape that keeps upper of a shoe assembly for example can comprise the material of textile material or nonwoven, for example, can be Shi Duobao (strobel) plate, elastomeric material, or textile.For example, it can be made by polyester, nylon, polyacrylic acid, polyolefin, polyurethane, polyethylene, cotton, cellulose acetate, artificial silk, alkene, acrylic acid, wool, spandex (spandex), metal etc.For becoming below clear reason, for keeping that the device of shape of upper of a shoe assembly is not wished waterproof or or even blocking water.The available any suitable method of device that is used for the shape that keeps upper of a shoe assembly is fixed to the bottom of air-permeable layer.For example,, for keeping the device of shape of upper of a shoe assembly can be fixed to by methods such as stitching, part stitching, stitching, welding, ultrasonic bonding the bottom of gasket material 230.After the device of the shape for keeping upper of a shoe assembly is fixed to the bottom of gasket material 230, the foot cover that just can obtain formation and can receive wearer's pin.
Alternatively, for the device of the shape 80 that keeps upper of a shoe assembly 10, can comprise the liner that draws side.That is, it can be comprised of the material webs that upper of a shoe assembly is kept together, and without other additional material.
Once formation foot cover, shoe last or hat block process processed just can be carried out.Specifically, as known in row, shoe tree is inserted in foot cover at 140 places, top of opening, foot cover is formed as to the accurate shape of shoe tree.
Conventionally, now, in the shoe last or hat block process processed of prior art, when shoe tree is inserted in foot cover, waterproof gasket material is attached to the lower surface part of foot cover, as a part for sole assembly.
But, be surprised to find that waterproof gasket material attached dispensable.
In this, to be convenient to polymer 100 mobile device in whole sole assembly and be placed on the bottom of foot cover, follow-up attached to carry out, promoting polymer 100 to flow in sole assembly is for the bottom 40 of sole assembly 20 and upper of a shoe assembly is bonded together, to form the sealing of waterproof.In one embodiment, this device can be interval insulant, for example, substantially cuts into the interval silk screen 110 identical with the shape of shoe tree bottom.In another embodiment, this device can be interval insulant/inner bottom plating composite members 130, and it is substantially identical with shoe tree bottom (that is, the bottom of pin) shape.Any other suitable device all can adopt, as long as it is sufficiently incompressible, to keep flow channel in injection moulding process, and sufficiently rigidity is convenient to upper of a shoe carry out shoe last or hat block system with bending.In another embodiment, this device self can be molded inner bottom plating 120.In all embodiment, interval insulant, inner bottom plating and/or interval insulant/inner bottom plating composite members can have the one or more openings that comprise in the inner, thereby form waterproof sealing so that binder material flows in whole sole assembly.Described opening can be hole, passage or like configurations.
Forward Fig. 7 to, the stereogram of foot cover 170 shown in figure.Can from Fig. 3 and 6, see the attached lower surface part with being bonded to foot cover of interval insulant/inner bottom plating composite members.In one embodiment, interval insulant is positioned on the top of inner bottom plating, and is directly communicated with foot cover bottom.In another embodiment, this order is by conversely.Also having in other embodiment, as discussed above, molded inner bottom plating or interval insulant self can be attached to the bottom of foot cover.No matter structure or how arrange, interval insulant and inner bottom plating can be with any suitable material manufactures with enough rigidity.Limiting examples comprises polymeric material and textile material.For making the mobile device of polymer 100 can use any suitable binder material to be bonded to the lower surface part of foot cover.The limiting examples of suitable binder material comprises polyurethane and PVC, but any expandable and foamable material that is enough to formation sealing all can be used to manufacture foot cover.
No matter the type of binding agent used how, binding agent must be flowable, its mobility reaches such degree: flow through the opening of being convenient in the mobile device of polymer 100, and at least substantially to fill these openings with polymer, and by together with the lower adhesive of sole assembly and upper of a shoe assembly.
After this, upper of a shoe assembly 10 is pulled down, is glued together (or alternate manner is attached to the bottom of the mobile device of being convenient to polymer 100) and turnover, so that the shape of footwear uppers is fixed to shoe tree.Interval insulant is positioned to make the interior end to keep not contacting completely with foot cover bottom, and like this, once binding agent is injected in opening, binding agent just can fully seal up the bottom of foot cover.
As known in row, use known conventional method in row, for example, injection molding, water the methods such as molded, then by opening, apply mold compound.
Then can carry out traditional step, suitable soling materials or outer bottom/middle end are attached to the lower surface (if necessary) of footwear.
For the purpose of complete, Fig. 1-3rd, the cutaway view of footwear according to the present invention, wherein, represents traditional outer bottom with Reference numeral 220.Outer bottom 220 can be any suitable material, for example, and polyurethane, natural rubber, synthetic rubber, leather, artificial leather, polyvinyl chloride, vinylacetic acid fiber etc., and their combination.
Conventional method comprises to be injected or waters polymeric material by traditional injection molding method, thereby forms outer bottom or the middle end.Alternatively, inject or pouring polymeric material after, glue-bondable or other method (stitching, part stitching, nail joint, welding etc.) of outer bottom is attached to the bottom of shoe construction.
So-called " waterproof footwear " is as definite in got off.Footwear are placed on blotting scraps of paper top.With the water of room temperature, fill footwear inside, reach the height (measuring) of about 30mm under functional material top line from the interior end of heel area.Allow water to stop at least two hours in footwear.Within two hours, while finishing, inspection blotting paper and footwear upper of a shoe, to determine whether water has arrived the outside of blotting paper or upper of a shoe.If do not have water to arrive the outside of blotting paper or upper of a shoe, these footwear are waterproof.
As used in the text, adopt " functional layer of waterproof, permeable steam " and " waterproof gasket material ", if they are combined to form according to footwear of the present invention, they generate the footwear of " waterproof " as defined above.
Although illustrate in literary composition and described specific embodiments of the present invention, the present invention should not be limited to so illustrate and describe.Should be understood that, within the scope of attached claims, also can include and implement various changes and the modification as a part of the present invention in.