JP3777519B2 - Footwear footing - Google Patents

Description

[0001]
[Industrial application fields]
The present invention is a member constituting the main body of footwear or a replaceable insole at a sole contact portion that contacts the sole of footwear such as shoes, sandals, slippers, shoe insoles, clogs, etc. It relates to the items used (hereinafter referred to as “footwear footsteps”).
[0002]
[Prior art]
Footwear that touches the soles of footwear, such as natural plants such as wood and bamboo, and leather and fabrics to absorb moisture from sweating while wearing for a long time Footwear and footwear made of foamed resin that is made of open cells and has breathability are mainly used, and in the case of non-foamed resin that does not have breathability and moisture absorption, through holes and unevenness are on the surface. In addition, moisture is not trapped between the footwear and soles while wearing.
[0003]
[Problems to be solved by the invention]
However, since the breathable footwear sole made of a cloth or a foamed resin has a porous structure, fine powder, dirt and other dust (hereinafter simply referred to as dust) on the foot skin adhering to the footwear sole has a porous structure. It penetrates into the fine internal voids and is difficult to remove, and the dust that has entered the inside absorbs moisture, and the entire insole of the footwear tends to get wet. On the other hand, in footwear footsteps made of non-foamed resin with irregularities and through-holes on the surface, the non-foamed resin is non-hygroscopic, so dust does not penetrate into the footwear footwear material. Since the unevenness and through-holes are mechanically forcibly attached and are not densely attached and are sparse, even if dust adhering to the recesses and through-holes can be cleaned and removed, they are sparse. Therefore, the contact area between the sole and the footwear sole is large, and the contact part is stuffy.
[0004]
OBJECT OF THE INVENTION
Accordingly, the present invention is intended to provide a footwear sole that eliminates stuffiness during wearing, can easily wash away dust adhering to it, and can keep the sole contact portion always clean. .
[0005]
[Means for Solving the Problems]
The footwear sole according to the present invention is formed by lining a cushion material on the back surface of a pile fabric, and has water permeability.
[0006]
A pile fabric is a fiber structure in which pile fibers protrude from a base fabric in a tuft shape, and the protruding pile fibers form a pile layer on one side of the base fabric, including a moquette loom, a towel loom, and a Wilton carpet loom. Pile fabrics woven by pile looms, pile knitted by double raschel warp knitting machines and other pile knitting machines, tufted pile fabrics formed by inserting piles into base fabric by tufted machines and other flocking machines In addition, a needle punching felt in which some fibers are protruded in a tuft shape on the surface of the fiber web by needle punching, and an electrostatic flocking fabric in which pile pieces (fiber fragments / flockey) are electrostatically flocked on a base fabric are used.
[0007]
The cushioning material has a cushioning property that reduces the thickness by receiving a compressive load and elastically restores the original thickness by removing the compressive load, but the degree of the cushioning property is the average weight. When the corresponding compressive load of 300 g / cm ² is applied for 1 hour, the thickness is reduced by 1% or more, and after 1 hour after removing the compressive load, 10% or more of the reduced thickness (compression strain) is recovered. Anything to do. Therefore, for the cushion material, in addition to foamed resin sheets, pile fabrics, and other thick fabrics, non-foamed resin sheets that do not easily generate compressive strain, and conversely, the elastic recovery force is weak and the compressive strain is elastically recovered. Can be used with bulky and thick needle punching felts that require considerable time.
[0008]
The water permeability of the footwear footing should be such that the water containing alcohol that drips on one side oozes to the other side within one minute. The reason why alcohol is included in the water for examining the degree of water permeability is that the footwear footsteps are finished by applying a finishing agent such as an antifouling agent, an antibacterial agent or a fragrance having water repellency. This is for the purpose of eliminating misunderstanding as to whether it has water permeability because it has water repellency. Therefore, “water permeability” in the present invention means high air permeability and high moisture permeability.
[0009]
Thus, since the footwear sole has water permeability, the pile fabric and the cushion material must also have water permeability. Therefore, if the cushion material is made of a material that does not have water permeability such as a non-foamed resin sheet, for example, a rubber sheet that does not have open cells, a water permeable hole is formed in the cushion material. In the case of using a pile woven fabric, a pile knitted fabric, or a tufted pile fabric as the pile fabric, in order to fix the pile to the base fabric, when applying an adhesive on the entire back surface of the pile fabric, Immediately after the application, high pressure (compressed) air (air flow) is applied from one side of the pile fabric, or suction is performed by vacuum, for example, the air flow directed to the front and back is applied to the pile fabric, and one of the adhesive coating films is applied. It is advisable to break the part to form a water permeable hole. In order to obtain an electrostatic flocking fabric having water permeability, a net-like rough base fabric may be used as the base fabric on which the pile pieces are electrostatically flocked. It is good to make an air current act with respect to the coating film of the binder apply | coated, and to form a water-permeable hole in the coating film.
[0010]
Pile fabric and cushion material are laminated together by laminating them, but if the pile fabric or cushion material is adhesive by solvent or heating, no adhesive is used. In the case of using an adhesive, it is partially applied or air current is applied to the adhesive coating as described above. In addition, when making a footwear sole by pasting together a water-impermeable pile fabric and a water-impermeable cushion material, a through-hole penetrating the front and back may be perforated to impart water permeability.
[0011]
The pile of the pile fabric may be either a cut pile or a loop pile, and may be a mixture of cut pile and loop pile, or a part of the pile forms a lump that is harder than other piles. There may be. In order to form a bulky pile that is harder than other piles on a part of the pile surface, use a thick denier thermoplastic synthetic fiber that is easier to heat shrink than other piles. It is only necessary to heat the pile fabric formed so as to be scattered on the pile surface, and to heat-shrink the long loop pile. At that time, if the loop pile is heated to such an extent that the loop pile is thermally melted, a hard and solid pile is formed. Is done. As the pile fiber, a fiber having a single yarn fineness of 3 to 10 denier, which is used for wool fiber and other ordinary carpets, can be used, but preferably the single yarn fineness is 30 denier or more, and more preferably the single yarn fineness is. It is recommended to use filament yarns of 100 denier or higher. However, when the single yarn fineness of the pile fiber is 30 denier or more, particularly 100 denier or more, the stimulation from the tip of the pile fiber to the sole acting as a reaction force against the foot pressure increases, and the socks are easily worn. Therefore, the pile is a loop pile, or flat fibers having crimps that are flat in cross section and bent in the fiber axis direction are used as the pile fibers. The “flat fiber” in this case means a fiber having a flat cross section and a width of 4 times or more. In this case, the pile fiber has a thickness and a cross-sectional shape. In the case of yarn, it means the thickness and cross-sectional shape of the monofilament, but in a split yarn with a long slit (cut groove) that continues long in the length direction of the tape yarn, between the adjacent slits in the width direction. It means the thickness and cross-sectional shape of the part that lasts long. This is because, in a pile fabric made of split yarn, the split yarn is cut into a short length corresponding to the pile length (height) to form a pile, and the portion that continues long between the slits This is because piles are formed as pile pieces. In this way, flat fibers are recommended when cut piles are formed thereby. When forming loop piles, not only flat fibers but also normal non-flat, that is, the cross-sectional width of the fibers is 4 times the thickness. You may use the circular fiber of the circular cross section used as less than. In short, the pile of the pile fabric is a loop pile by a monofilament having a single yarn fineness of 100 denier or more, or a flat monofilament having a crimp that is bent in the fiber axis direction with a single yarn fineness of 100 denier or more. That is why cut pile is recommended.
[0012]
Embodiment 1
1 and 2 is formed by bonding a cushion material 19 to a tufted pile fabric 27 in which a pile 32 is tufted on a base fabric 31. For the cushion material 19, a net-like foamed resin sheet is used in which a warp knitted net 34 is used as a core and a foamed resin composition 16 is applied to form a convex portion 26 of the foamed resin 16 protruding symmetrically. The warp knitting net 34 is knitted with the main warp 11 and the sub warps 13 and 14, and the main warp 11 forms a chain knitting row 12, 12 ′, 12 ″ straight in the wale direction W, and the sub warp 13, 14 Are connected by wrapping between the chain knitting rows 12, 12 ', 12 "..., and in the gap G between these chain knitting rows 12, 12', 12" ... 13 and 14 are divided into several courses to form a net hole 15 continuing in the wale direction W. The foamed resin composition 16 is applied to the main warp 11 and the sub warp 13 and 14 without closing the net hole 15. The chain knitting rows 12, 12 ′, 12 ″ coated with the foamed resin composition 16 are the columns 17, and the wrapping secondary warp yarns 13, 14 coated with the foamed resin composition 16 are the rows 18. Surrounded by 17 and row 18 The air gap hole 36 is formed in the net hole 15 of the warp knitted net 34. The convex portion 26 of the cushion material (net-like foamed resin sheet) 19 has a void hole 36 as a concave portion, and is formed by the foamed resin 16 that covers and foams the main warp 11 and the sub warps 13 and 14. Yes.
[0013]
That is, in each chain knitting row 12, two sub warps of a first sub warp 13 and a second sub warp 14 are arranged, and these sub warp yarns 13 and 14 continue without being knitted into the chain knitting row 12 'simultaneously over several courses. Are then knitted separately into the left and right chain knitting rows 12 'and 12 ", and between the adjacent chain knitting rows 12 and 12', 12 'and 12", ..., the first sub warp 13 and the second sub warp 14 Are crossed in an X-shape, and the crossing of the sub warp is performed by the crossing of the first sub warp 13 and the second sub warp 14 and the two adjacent chain knitting rows 12 and 12 '(12' and 12 ", ...). Two triangles 21 and 22 that share a point as a vertex 20 and have chain stitch rows 12 and 12 'as bases are formed between the chain stitch rows 12 and 12', 12 'and 12 ", ..., By means of their triangles 21 and 22 between the chain stitch rows 12 and 12 ', 12' 2 ″... Gap G is partitioned to form the net hole 15, and the triangles 21 and 22 and the net hole 15 are continuously formed in the course direction C. Convex portions 26 projecting from the front and back of the warp knitting net 34 across the two triangles 21 and 22 surrounded by the first sub warp 13 and the second sub warp 14 intersecting with each chain knitting row 12 as the center. The main warp 11, the first sub-warp 13, and the second sub-warp 14 that form the triangles 21 and 22 are wrapped in the foamed resin 16 in the convex portion 26.
[0014]
The gap G between the chain stitch rows of the warp knitting net 34 depends on the thickness of the warp yarn, but is generally 3 mm or more and about 5 to 20 mm, and the net hole 15 is sized so that a circle having a diameter of 3 mm or more is inscribed. . The foamed resin 16 may be by mechanical foaming by a mixer or by chemical foaming to form foam by the decomposition gas of the foaming agent, and various resins such as vinyl chloride type and polyurethane type may be used as the resin. Used.
[0015]
The pile fabric 27 and the cushion material 19 may be bonded simultaneously with the backing coating of the adhesive 35, but one of the adhesive 35 or the foamed resin 16 has heat-sealability like vinyl chloride. In this case, it is preferable that the adhesive 35 coated with the backing is once solidified in order to bond the coating 31 and the pile 32 to each other. The pile 32 is tufted with a coarse tuft gauge about twice as large as the arrangement interval of the warps 37 on the coarse woven base fabric 31 formed between the gap holes 36 or the respective wefts 37, 38, and vinyl chloride is applied to the back stitch surface. The adhesive 35 as a main material is applied without closing the gap hole 36. In FIG. 1 and FIG. 2, the interval G between the chain stitch rows 12 of the warp knitting net 34 is about three times the warp interval of the base fabric 31, and the first sub-warp 13 and the second sub-warp 14 span three courses. The chain stitch row 12 is wrapped and knitted to the left and right, and is not knitted into the chain stitch row over the following three courses, and then moved to the left and right adjacent chain stitch rows 12 to be knitted. Follow the zigzag in the wale direction. The foamed resin 16 is mainly made of a vinyl chloride paste resin, and after the coated adhesive 35 is solidified, it is heated to such an extent that the bonding surface of the adhesive 35 and the cushion material 19 becomes sticky. Crimped from.
[0016]
The cushion material 19 is formed in such a manner that the foamed resin 16 is applied to the warp knitted net 34 and the front and back surfaces thereof are not bonded to the back surface of the pile fabric, and are separated from the pile fabric. The convex portion 26 is formed as a film that wraps the knitting yarns 11, 13, and 14 surrounding the net hole 15, and the convex portion 26 has an auxiliary warp around the thick chain knitting row 12. Since 13 and 14 are interposed so as to surround, the convex portions 26 are reinforced by the knitting yarns 11, 13, and 14 from the top, bottom, left and right, and have excellent wear resistance. Between the chain knitting rows 12 and 12 'of the warp knitting net that reinforces the foam resin 16, the portions 21 and 22 connected by the intersecting sub warp yarns 13 and 14 and the chain knitting rows 12 and 12' are made of foam resin. Since the joined portions 21 and 22 are in close contact with the chain braid row 12 and constitute an elastic structure integrated with the foamed resin 16, the footwear footstep 33 is easy to scour, The back side does not have slack folds or the like, and the shape remains stable thereafter. Since the cushion material 19 has the net holes 15 as gaps, the air permeability and water permeability of the pile fabric 27 obtained by the net-like base fabric 31 is not impaired, while the holes 15 of the cushion material 19 have the knitting yarns 11 and 13. -Since it is rounded by 14 and it does not say that a crack arises from the circumference | surroundings of the hole 15. Thus, it is possible to obtain a footwear foot pad having a cushioning property which is highly flexible and excellent in wear resistance, washing resistance and water resistance.
[0017]
Embodiment 2
3 and 4, the footwear footrest 33 has a double fabric structure cushion material 19 in which a top fabric and a lower fabric are connected to a tufted pile fabric 27 in which a pile 32 is tufted on a base fabric 31. It is formed by bonding with an adhesive. In such a cushioning material 19, in the process of weaving or knitting the upper fabric and the lower fabric at the same time in the upper and lower directions simultaneously, a connecting thread 40 is arranged between the upper fabric and the lower fabric, and the connection The yarn 40 is woven or knitted by reciprocating between the upper cloth and the lower cloth and alternately connecting the upper cloth and the lower cloth.
[0018]
FIG. 3 illustrates the cushion material 19 woven. The upper cloth is woven with the upper weft 43 sandwiched between the upper warp 41 and the upper warp 42, and the lower cloth is the base warp 44. The lower weft 46 is sandwiched between the upper and lower warp threads 45, and the connecting yarn 40 alternately crosses over the upper weft 43 each time two upper wefts 43 and two lower wefts 46 are woven. Under the one lower weft 46, the upper fabric and the lower fabric are connected by being woven between the upper fabric and the lower fabric. In order to weave the cushion material having such a double woven structure, a well-known double pile loom described in Japanese Utility Model Publication No. 55-2045, Japanese Patent Publication No. 50-10982 or the like may be used.
[0019]
FIG. 4 illustrates a knitted cushion material. The upper fabric is knitted by connecting the upper chain knitting row 47 and the upper chain knitting row 47, which are knitted by the upper warp yarn, by the upper auxiliary warp yarn 48, and the lower fabric is The lower chain knitting row 49 and the lower chain knitting row 49 knitted by the base warp yarn are connected by the lower auxiliary warp yarn 50, and the connecting yarns 40 are alternately knitted into the stitches of the upper chain knitting row 49 and the lower chain knitting row 49. The upper cloth and lower cloth are connected. In order to knit the cushion material having such a double knitted structure, a known double pile knitting machine described in JP-A-55-107561 and JP-B-58-24541 may be used.
[0020]
That is, in the footwear foothold 33 shown in FIG. 3 and FIG. 4, a double pile having an upper and lower double structure formed in the process of knitting or knitting two sheets of cut pile fabrics at the same time by a double pile weaving machine. The cloth fabric is used as it is for the cushion material 19 without being center-cut (cutting the connecting thread connecting the upper cloth and the lower cloth between the upper cloth and the lower cloth). However, since the double pile fabric original fabric does not form a cut pile fabric by center cutting, but constitutes the cushion material 19, the connecting yarn 40 corresponding to the pile yarn of the cut pile fabric has no pile. It is recommended to use a monofilament yarn having a thickness of 30 denier or more, preferably 100 denier or more, particularly a monofilament yarn having a non-flat cross section and a circular shape.
[0021]
Thus, since the cushioning material 19 is a very thick fabric in which the connecting yarn 40 stands between the upper fabric and the lower fabric, it is excellent in breathability and cushioning properties, easy to wash and can be dehydrated and dried instantly. Further, even if the cloth is extremely thick, the upper cloth and the lower cloth are stitched by the connecting thread 40, so that even if the upper cloth and the lower cloth are net-like rough, they are delaminated. In addition, the air permeability and water permeability of the cushioning agent 19 are not impaired by the adhesive applied for bonding to the pile fabric 27, which is advantageous in obtaining the footwear footwear 33 rich in water permeability.
[0022]
【The invention's effect】
In the footwear footwear according to the present invention, the surface is constituted by pile napping of a pile fabric, and a cushion material is laminated on the back surface thereof to have water permeability. Since this pile fabric is also used as a cushioning material, the footwear footrest is extremely rich in cushioning properties.
[0023]
The pile nap is in an upright state, and there are countless fine gaps between the pile fibers that are perpendicular to the cushioning material. It moves to the cushion material side with moisture and does not stick to the surface of the footwear.
[0024]
In particular, the repeated change of the cushioning material that repeatedly undergoes compression deformation and elastic recovery due to foot pressure during wearing increases the movement of air inside the footwear like a pump, and with the moving air sweat and skin Dust such as fine powder and dirt tends to gradually move to the cushion material side, and the transferred moisture is released from the side surface of the cushion material to the outside, so that the footwear foot pad becomes difficult to take moisture (sweat). .
[0025]
In particular, when the pile fiber is a flat fiber having a flat cross section and a crimp of 30 denier or more, the pile fiber is compared with a pile fiber having a generally circular cross section having a thickness of 10 denier or less used for carpets. Since the intervening gap is thick and large, dust and moisture are more easily transferred to the cushion material side.
[0026]
In addition, carpet pile fibers generally have a circular cross section, and from the tip, reaction force against the foot pressure concentrates on the sole and stimulates the sole, but the pile fiber has a flat cross section as in this proposal. Then, the reaction force against the foot pressure acting on the sole is distributed over the flat cross section of the pile fiber, and the stimulation to the sole is weakened. In particular, in flat fibers having crimps, the side of the flat fiber that is bent and rounded touches the sole, so that the sole is not stimulated by the pile fiber, and thus the footwear footwear obtained is worn. It will be comfortable.
[0027]
Since the net-like cushion material reinforced by the net-like core material and the cushion material having a double fabric structure as shown in the embodiment are extremely breathable and easy to wash, the footwear footing is always kept clean.
[0028]
As described above, according to the present invention, there is no stuffiness during wearing, it is difficult for dust to adhere to the surface, dust transferred to the cushioning material can be easily washed and removed, and the sole contact portion is always kept clean. Footwear footsteps that can also be obtained.
[Brief description of the drawings]
FIG. 1 is a rear view of a footwear sole according to the present invention, and shows an enlarged view of a part encircled.
2 is a partially enlarged cross-sectional view of a footwear sole according to the present invention shown in FIG. 1 at a portion corresponding to XX ′. FIG.
FIG. 3 is a perspective view of a footwear sole according to the present invention, showing a part encircled and enlarged.
FIG. 4 is a perspective view of a footwear sole according to the present invention, showing a part encircled and enlarged.
[Explanation of symbols]
11 Main warp 12 Chain knitting row 13/14 Secondary warp 15 Net hole 16 Foamed resin 17 Column 18 Row 19 Cushion material 20 Apex 21/22 Triangle 24/25 Gap 26 Protrusion 27 Pile fabric 31 Pile fabric 31 Pile 33 Footwear sole 34 Warp knitting net 35 Adhesive 36 Gap hole 37 Warp yarn 38 Weft yarn 40 Linking yarn 41 Upper warp yarn 42 Upper knitting warp yarn 43 Upper weft yarn 44 Base warp yarn 45 Lower tightening warp yarn 46 Lower weft yarn 47 Upper chain knitting row 48 Upper secondary warp yarn 49 Lower chain knitting row 50 Lower secondary warp W Wale direction C Course direction G Clearance

Claims (3)

Cushioning material comprising a foamed synthetic resin on the back surface of a pile fabric having a thickness of 30 denier or more, a flat cross section, and flat fibers having crimps bent in the fiber axis direction. Footwear sole that is made of laminated lining and has water permeability. A foamed resin that is constructed by pasting a cushioning material on the back of a tufted pile fabric with a pile tufted on a base fabric. The warp knitted net is knitted with a main warp and a sub warp, and the main warp forms a chain knitting line straight in the wale direction W. Sub warp yarns are connected by wrapping between the knitting rows, and in the gap G between the respective chain knitting rows, net holes are formed that are partitioned every several courses by the wrapping sub warp yarns and continue in the wale direction W. The foamed resin composition is applied to the main warp and the secondary warp without closing the net hole, and the chain-knitted row covered with the foamed resin composition is used as a tandem and wrapped with the foamed resin composition. A void hole surrounded by these columns and rows, each having a warp as a row, is formed in the net hole of the warp knitting net. Footwear sole made of foamed resin that is covered with warp and has water permeability. A process in which a cushioning material is bonded to the back of a tufted pile fabric with a pile tufted on a base fabric. In this case, a connecting yarn is arranged between the upper fabric and the lower fabric, and the connecting yarn is woven or knitted by reciprocating between the upper fabric and the lower fabric while being alternately connected to the upper fabric and the lower fabric. A footstool with a heavy fabric structure and water permeability.

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