Grass woven placemat structure

Abstract

The invention provides a straw woven placemat structure which comprises a placemat body, the placemat body is composed of a woven layer formed by warp and weft interweaving of straw fibers, the woven layer is provided with an outer ring compact area and an inner ring loosely-woven area with linear density gradient in the radial direction, the linear density of the outer ring compact area is 1.5-2.2 times that of the inner ring loosely-woven area, and the linear density of the inner ring loosely-woven area is 1.5-2.2 times that of the inner ring loosely-woven area. A humidity-sensitive arching unit is formed at the junction of the outer ring compact area and the inner ring loose weaving area, so that when the relative humidity of the environment is increased by 20-40% RH, a reversible arching arc height of 0.4-1.2 mm is generated on the surface of the weaving layer, a plurality of capillary braids are embedded in the weaving layer, the included angle between each capillary braid and the longitudinal and latitudinal main direction is 20-35 degrees, the apparent width of each capillary braid is 0.6-1.2 mm, the pitch between every two adjacent braids is 3-6 mm, and the thickness of each capillary braid is 1-3 mm. The problem that in the prior art, although seepage and slipping can be slowed down, the touch feeling of straw plaiting is inconsistent with the orientation of environmental protection is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of table mats, in particular to a straw-woven table mat structure. BACKGROUND

[0002] Traditional straw-woven table mats generally lack effective flow guide and edge sealing structures in wet-state use scenarios such as splashing of soup, condensed water or beverages, and liquid seeps out along the woven pores and edge capillary channels, which easily contaminates the tabletop and causes wet-state slipping, low cleaning and drying efficiency, and limited overall use experience.

[0003] Although the existing technology can slow down liquid seepage and slipping through the improvement of silica gel strips / suction cups or plastic composite films, it is contrary to the touch and environmental protection orientation of straw weaving, and it is difficult to obtain an integrated solution with flow guide, anti-seepage, anti-slip and aesthetics in the pure straw weaving path.

[0004] Therefore, it is necessary to provide a new straw-woven table mat structure to solve the above technical problems. SUMMARY

[0005] To solve the above technical problems, the present application provides a straw-woven table mat structure, which solves the problem that the existing technology can slow down liquid seepage and slipping, but is contrary to the touch and environmental protection orientation of straw weaving.

[0006] The straw-woven table mat structure provided by the present application comprises a table mat body composed of a woven layer formed by interlacing straw fiber filaments in the warp and weft directions; The woven layer is provided with an outer ring dense area and an inner ring loose area with a linear density gradient in the radial direction, and the linear density of the outer ring dense area is 1.5-2.2 times that of the inner ring loose area; A humidity-sensitive arching unit is formed at the junction of the outer ring dense area and the inner ring loose area, so that when the relative humidity of the environment rises by 20-40% RH, a reversible arching arc height of 0.4-1.2 mm is generated on the surface of the woven layer; The woven layer is embedded with a plurality of capillary braid channels with an included angle of 20-35° with the warp and weft main directions, the apparent width of the capillary braid channel is 0.6-1.2 mm, the pitch of adjacent braid channels is 3-6 mm, and the capillary braid channels are drained towards the seepage area of the table mat edge; The edge of the table mat body is provided with an annular edge protection belt, and the annular edge protection belt and the table mat body are assembled by glue.

[0007] In a preferred embodiment, the capillary braid channel is formed by 2-3 split straw filaments in a fishbone lock joint manner to form a V-shaped cross section, the single filament width of the split straw filament is 0.6-1.5 mm, and the thickness is 0.15-0.45 mm.

[0008] In a preferred embodiment, the opening angle of the V-shaped cross section is 20-60°.

[0009] In a preferred embodiment, the meal mat body is provided with a three-axis woven pressure-bearing island in the area where the tableware is usually placed, the local thickness of the pressure-bearing island is increased by 15-30% compared to the surrounding area, and the bending stiffness of this area is increased by 40% or more.

[0010] In a preferred embodiment, the surface of the grass fiber yarn has a 0.8-3.0 g / m 2 of natural plant wax phase change fine coating, the coating surface has 50-150 μm micropores to maintain air permeability, and the phase change endothermic peak is located at 50-65°C.

[0011] In a preferred embodiment, the moisture-sensitive arching unit is obtained by the following process: the moisture content of the grass yarn is 8-12%, the warping tension is 0.15-0.35 N / yarn, and the hot shaping temperature is 50-80°C, so that the arching response threshold is controlled at 20-40% RH.

[0012] In a preferred embodiment, a seam cover tape is connected between the meal mat body and the annular edge protection belt by glue, which is used to block the gap between the spiral meal mat body and the annular edge protection belt, and the seam cover tape covers and blocks the gap in the circumferential direction to block the edge capillary liquid penetration.

[0013] In a preferred embodiment, a waterproof pad is further included, one side of the waterproof pad is fixed with a plurality of clamping blocks in the circumferential direction, and the other side of the annular edge protection belt is provided with a plurality of grooves spaced apart, the grooves are embedded with the clamping blocks to realize detachable connection of the waterproof pad.

[0014] In a preferred embodiment, a plurality of anti-skid nails are fixed on one side of the waterproof pad, the anti-skid nails are soft mushroom head-shaped protrusions, the height of the anti-skid nails is 0.6-1.5 mm, the top surface diameter is 1.2-2.5 mm, and the center distance between adjacent anti-skid nails is 6-14 mm. The cross section of the annular edge protection belt is U-shaped or clamping-shaped, the inner side forms a clamping groove for accommodating the edge of the meal mat body, the opening width of the clamping groove is 1.5-3.5 mm, the groove depth is 1.0-2.5 mm, and an adhesive line or anti-skid pattern is arranged on the groove bottom in the circumferential direction.

[0015] In a preferred embodiment, the waterproof pad is a multi-layer composite structure, which includes in sequence: a surface hydrophilic diffusion layer: bamboo fiber or regenerated cellulose non-woven, surface density 30-120 g / m 2 ; a capillary channel network: PLA / cotton blended network or impact texture, channel width 0.2-0.6 mm, inclination angle 15-30°; a waterproof and moisture-permeable film layer: microporous TPU film, thickness 15-40 μm, moisture permeability ≥3000 g / m 2 ·24h; Buffering and heat insulation layer: cork 0.5-1.5mm or EVA microfoaming 0.6-1.8mm; Antiskid layer: natural rubber / bio-based elastomer base material.

[0016] Advantages of the present application: 1. Form a circumferential edge on the edge of the table mat body to suppress the loose and fluff of the grass wire end, improve the edge wear resistance and tear resistance, and at the same time form a neat visual boundary, smooth hand feeling and more decorative.

[0017] 2. The joint between the edge protection belt and the main body is covered and blocked by the seam cover tape along the circumference, cutting off the capillary exosmosis path, significantly reducing the probability of soup leakage from the edge to the desktop.

[0018] 3. The clamping block on the waterproof pad is embeddedly connected with the inner groove of the edge protection belt, realizing quick assembly and cleaning replacement without disassembly of the tool, reducing maintenance cost and downtime.

[0019] 4. The waterproof pad is composed of a hydrophilic diffusion layer, a flow guide layer, a waterproof and moisture permeable membrane layer, a buffering and heat insulation layer, and an antiskid layer, which can quickly spread and direct flow, and prevent seepage and permeate through the microporous TPU film; the bottom layer cooperates with the soft mushroom head-shaped antiskid nail to consider heat insulation and noise reduction and wet state antiskid.

[0020] 5. Maintaining pure grass weaving touch and environmentally friendly route: the core slip resistance and anti-seepage ability are realized by structure / layer sequence design, without silica gel guide strip and suction cup, which fits the grass weaving touch and bio-based orientation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The main structure of the grass woven table mat structure provided by the present application is shown in the following figure Figure One ; Figure 2 The main structure of the grass woven table mat structure provided by the present application is shown in the following figure Figure Two ; Figure 3 The cross-sectional view of the annular edge protection belt provided by the present application is shown in the following figure Figure 4 The structure diagram of the waterproof pad provided by the present application is shown in the following figure.

[0022] Figure: 1, table mat body; 2, annular edge protection belt; 3, seam cover tape; 4, waterproof pad; 5, clamping block; 6, groove; 7, antiskid nail; 8, surface hydrophilic diffusion layer; 9, flow guide layer; 10, waterproof and moisture permeable membrane layer; 11, buffering and heat insulation layer; 12, antiskid layer. DETAILED DESCRIPTION

[0023] The present application will be further described below in combination with the drawings and embodiments.

[0024] Please refer toFigure 1 、 Figure 2 、 Figure 3 and Figure 4 wherein Figure 1 is the main structure of the straw-woven table mat provided by the present application Figure One ; Figure 2 is the main structure of the straw-woven table mat provided by the present application Figure Two ; Figure 3 is the cross-sectional view of the annular edge guard tape provided by the present application Figure 4 is the structural schematic diagram of the waterproof mat provided by the present application

[0025] In the specific implementation process, as shown in Figures 1-4 , it comprises a table mat body 1, which is composed of a woven layer formed by interlacing straw fiber filaments, and the woven layer is provided with a radially outer ring dense area and an inner ring loose area with a linear density gradient, and the linear density of the outer ring dense area is 1.5-2.2 times that of the inner ring loose area. A humidity-sensitive arching unit is formed at the junction of the outer ring dense area and the inner ring loose area, so that when the relative humidity of the environment rises by 20-40% RH, a reversible arching arc height of 0.4-1.2 mm is generated on the surface of the woven layer; the humidity-sensitive arching unit is obtained by the following process: the pre-moisture content of the straw filaments is 8-12%, the warping tension is 0.15-0.35 N / silk, and the hot shaping temperature is 50-80°C, so that the arching response threshold is controlled at 20-40% RH.

[0026] The woven layer is embedded with several capillary braid channels with an angle of 20-35° with the warp and weft main direction, the apparent width of the capillary braid channel is 0.6-1.2 mm, the pitch of adjacent braid channels is 3-6 mm, and the capillary braid channels are drained towards the exuding area of the table mat edge; the capillary braid channel is knitted into a V-shaped cross-section in a fishbone lock joint manner by 2-3 split straw filaments, the single filament width of the split straw filaments is 0.6-1.5 mm, and the thickness is 0.15-0.45 mm.

[0027] The opening angle of the V-shaped cross-section is 20-60°, and the table mat body 1 is provided with a three-axis woven pressure-bearing island in the area where tableware is usually placed, the local thickness of the pressure-bearing island is increased by 15-30% compared with the surrounding area, and the bending stiffness of the area is increased by 40% or more.

[0028] The surface of the straw fiber filaments has a natural plant wax phase change fine coating of 0.8-3.0 g / m 2 , the coating surface has micropores of 50-150 μm to maintain air permeability, and the phase change endothermic peak is located at 50-65°C.

[0029] The placemat body 1 has an annular edge protector 2 along its edge, which is glued to the placemat body 1. A seam-sealing tape 3 is glued between the placemat body 1 and the annular edge protector 2 to seal the gap between the spiral placemat body 1 and the annular edge protector 2. The seam-sealing tape 3 covers and seals the gap circumferentially to prevent capillary seepage at the edge.

[0030] It also includes a waterproof pad 4, on one side of which multiple locking blocks 5 are fixed circumferentially. On one side of the annular edge protector 2, multiple grooves 6 are spaced apart. The grooves 6 fit into the locking blocks 5 to achieve a detachable connection of the waterproof pad 4. On one side of the waterproof pad 4, several anti-slip studs 7 are fixed at intervals. The anti-slip studs 7 are soft mushroom-shaped protrusions with a height of 0.6-1.5mm, a top diameter of 1.2-2.5mm, and an adjacent center distance of 6-14mm. The cross-section of the annular edge protector 2 is U-shaped or clamping-shaped, and its inner side forms a clamping groove 6 for accommodating the edge of the placemat body 1. The opening width of the clamping groove 6 is 1.5-3.5mm, the groove depth is 1.0-2.5mm, and adhesive lines or anti-slip textures are provided on the bottom of the groove in a circumferentially distributed manner.

[0031] Waterproof gasket 4 has a multi-layer composite structure, comprising, in sequence: Surface hydrophilic diffusion layer 8: bamboo fiber or regenerated cellulose nonwoven fabric, areal density 30-120g / m³ 2 ; 9. Capillary channel mesh of the flow guide layer: PLA / cotton blended mesh or punched texture, channel width 0.2-0.6mm, inclination angle 15-30°; Waterproof and breathable membrane layer 10: Microporous TPU membrane, thickness 15-40μm, moisture permeability ≥3000g / m 2 ·24h; Buffer insulation layer 11: cork 0.5-1.5mm or EVA micro-foam 0.6-1.8mm; Anti-slip layer 12: Natural rubber / bio-based elastomer substrate.

[0032] Example 1 (Basic type: edge protection tape + seam covering tape) 1. Materials and Pretreatment Rice straw / cattail is selected and cleaned, de-noded, split, and dried. Typical dimensions of split monofilaments are: width 0.8-1.2mm and thickness 0.20-0.35mm. The pre-weaving moisture content is controlled at 8-12%.

[0033] 2. Main body weaving (placemat main body 1) Adopting warp and weft interlacing to form the main body 1 of the table mat, setting a radial line density gradient: the line density ratio of the outer ring dense area to the inner ring loose area is 1.5-2.2; arranging a moisture-sensitive arching unit at the junction of the two areas, when the environmental relative humidity rises by 20-40%RH, a reversible arching arc height of 0.4-1.2mm is generated on the surface, forming a dry / heat dissipation microchannel with the lower ventilation and the upper support.

[0034] 3. Capillary braid arrangement (woven embedded flow guide) Embedding multiple capillary braids in the main body 1 of the table mat, with an angle of 20-35° with the warp and weft main direction; the apparent width of the braid is 0.6-1.2mm, and the pitch is 3-6mm; preferably using fishbone lock knot method to split the grass silk into 2-3 strands to form a V-shaped cross section (opening angle 20-60°), realizing oblique directional drainage to the edge exudation area.

[0035] 4. Assembly of ring-shaped edge protection band 2 and seam cover band 3 Assembling the ring-shaped edge protection band 2 along the circumference of the main body 1 by adhesion or clamping; to further block the edge exudation, a seam cover band 3 is arranged between the edge protection band 2 and the main body 1 to cover and block the gap. The adhesive should be a low-odor environmentally friendly glue for plant fibers, and the width of the glue line and the curing time should be controlled to avoid the influence of glue overflow on the appearance.

[0036] 5. Appearance and function inspection Inspecting the edge integrity (outer contour runout ≤1.5mm / circumferential), edge wear resistance (1kg load reciprocating 500-1000 times, mass loss record) and wet state anti-slip preliminary screening (static friction comparison of wood / ceramic / glass table top).

[0037] Example two (waterproof reinforced type: detachable waterproof pad 4 + clamping block / groove 5 / 6 + anti-skid nail 7) 1. Quick release connection Fixing clamping blocks 5 on one side of the waterproof pad 4, and equally spacing grooves 6 matched with the clamping blocks 5 on the inner side of the ring-shaped edge protection band 2; when assembling, the quick release connection is achieved by pressing and fitting, which is convenient for separate cleaning and replacement.

[0038] 2. Multi-layer structure of waterproof pad Surface hydrophilic diffusion layer 8: bamboo fiber or regenerated cellulose spunlace non-woven, surface density 30-120g / m 2 , used for rapid spreading of liquid drops.

[0039] Flow guide layer 9: PLA / cotton blended woven mesh or impact rib pattern, channel width 0.2-0.6mm, inclination angle 15-30°, guiding liquid to the edge exudation area.

[0040] Waterproof and moisture permeable film layer 10: microporous TPU film, thickness 15-40μm, moisture permeability ≥3000g / m 2 ·24h, realizing anti-seepage without dampness.

[0041] Buffering and thermal insulation layer 11: Cork 0.5-1.5mm or EVA micro-foaming 0.6-1.8mm, for peak clipping, thermal insulation, vibration reduction and noise reduction.

[0042] Anti-slip layer 12: Natural rubber / bio-based elastomer base with an array of soft mushroom head-shaped anti-slip studs 7 on the outer surface: height 0.6-1.5mm, top diameter 1.2-2.5mm, center distance 6-14mm, to stop slipping in wet state without damaging the table top.

[0043] 3. Process points The multi-layer composite can be completed by low-temperature lamination or environmentally friendly adhesive bonding; the clamping block 5 and the groove 6 are recommended to be made of hydrolysis-resistant materials or treated with waterproof coating; after assembly, the interlocking force is tested to prevent loosening.

[0044] I. Test setup (uniform conditions) Environment: 23±2°C; 50±5%RH.

[0045] Comparison samples: E1=Example 1 of the invention (annular edge guard + seam cover tape, basic type); E2=Example 2 of the invention (multi-layer detachable waterproof pad and mushroom head-shaped anti-slip studs based on E1); A=Control A (silica gel flow guide strip table mat); B=Control B (glass / PTFE composite film table mat); C=Control C (traditional pure straw flat weaving).

[0046] Liquid delivery: 50mL of deionized water was evenly dripped on the center of the mat; timing for 5min.

[0047] Statistics: n=5 for each, record mean ±SD.

[0048] II. Wet-state static friction coefficient μ (wood / ceramic / glass three kinds of table top) (loading 2.5kg test block, ASTMD1894 idea change, starting method to calculate μ)

[0049] Conclusion: E1 / E2, without silica gel and suction cup, wet-state μ≥0.55, reaching or approaching the silica gel scheme, significantly better than pure straw weaving and PTFE film scheme.

[0050] III. Flow guiding / drying capacity Edge drainage volume: collected from the edge exudation area within 5min (mL / 50mL delivered) Surface drying time: residual water content reduced to ≤5% of the initial value (separate humidity method)

[0051] Conclusion: E2's capillary fringe + multi-layer detachable waterproof pad combination achieved higher drainage and faster drying; PTFE membrane (B) was not permeable, but had poor drainage and slow drying.

[0052] Four, downward penetration / table top pollution evaluation (5 min) Table top residual liquid amount: direct collection before wiping (g), reflecting downward penetration / overflow.

[0053] Edge penetration line length: total length of visible wet marks on the edge (cm), reflecting the edge sealing effect.

[0054]

[0055] Conclusion: E1 / E2's edge sealing tape + edge protection tape effectively blocked edge capillary exosmosis, and E2 had the least downward penetration with the help of TPU microporous membrane and drainage layer.

[0056] The circuit and control involved in the present application are prior art, and will not be described in detail here.

[0057] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A grass-woven placemat structure, comprising a placemat body (1), wherein the placemat body (1) is composed of a woven layer formed by the warp and weft interlacing of grass fibers, characterized in that: The braided layer has an outer ring dense region and an inner ring loose region with a linear density gradient along the radial direction. The linear density of the outer ring dense region is 1.5-2.2 times that of the inner ring loose region. A moisture-sensitive arching unit is formed at the junction of the outer ring dense area and the inner ring loosely woven area, so that when the relative humidity of the environment rises by 20-40%RH, a reversible arching arc height of 0.4-1.2mm is generated on the surface of the woven layer. The woven layer contains several capillary braids at an angle of 20-35° to the main warp and weft directions. The apparent width of the capillary braids is 0.6-1.2 mm, the pitch between adjacent braids is 3-6 mm, and they are directed toward the seepage area at the edge of the placemat. The placemat body (1) is provided with an annular edge guard (2) at its edge, and the annular edge guard (2) is glued to the placemat body (1).

2. The straw-woven placemat structure according to claim 1, characterized in that, The capillary braid is formed by braiding 2-3 strands of split grass filaments into a V-shaped cross section using a fishbone lock knot. The width of a single split grass filament is 0.6-1.5mm and the thickness is 0.15-0.45mm.

3. The straw-woven placemat structure according to claim 2, characterized in that, The opening angle of the V-shaped cross-section is 20-60°.

4. The straw-woven placemat structure according to claim 3, characterized in that, The placemat body (1) has a three-axis woven pressure island in the area where tableware often falls. The local thickness of the pressure island is increased by 15-30% compared with the surrounding area, and the bending stiffness of the area is increased by 40% or more.

5. The straw-woven placemat structure according to claim 4, characterized in that, The surface of the grass fiber filaments has a density of 0.8-3.0 g / m. 2 The natural plant wax phase change fine coating has micropores of 50-150μm on the surface to maintain air permeability, and its phase change endothermic peak is located at 50-65°C.

6. The straw-woven placemat structure according to claim 5, characterized in that, The moisture-sensitive arching unit is obtained through the following process: the pre-moisture content of the straw is 8-12%, the warping tension is 0.15-0.35 N / filament, and the heat forming temperature is 50-80°C, so that the arching response threshold is controlled at 20-40%RH.

7. The straw-woven placemat structure according to claim 6, characterized in that, The placemat body (1) and the annular edge protector (2) are connected by adhesive with a seam-sealing tape (3) to seal the gap between the spiral placemat body (1) and the annular edge protector (2). The seam-sealing tape (3) covers and seals the gap in the circumferential direction to block capillary seepage at the edge.

8. The straw-woven placemat structure according to claim 7, characterized in that, It also includes a waterproof pad (4), on one side of which multiple clips (5) are fixed in a circumferential direction, and on one side of the annular side guard (2) multiple grooves (6) are spaced apart. The grooves (6) fit into the clips (5) to achieve a detachable connection of the waterproof pad (4).

9. The straw-woven placemat structure according to claim 8, characterized in that, The waterproof pad (4) is fixed with several anti-slip nails (7) at intervals on one side. The anti-slip nails (7) are soft mushroom-shaped protrusions with a height of 0.6-1.5mm, a top diameter of 1.2-2.5mm, and an adjacent center distance of 6-14mm. The cross-section of the annular edge protector (2) is U-shaped or clamping, and a clamping groove (6) is formed on its inner side to accommodate the edge of the placemat body (1). The opening width of the clamping groove (6) is 1.5-3.5mm, the groove depth is 1.0-2.5mm, and adhesive lines or anti-slip textures are provided on the bottom of the groove in a circumferentially distributed manner.

10. The straw-woven placemat structure according to claim 9, characterized in that, The waterproof pad (4) has a multi-layer composite structure, comprising, in sequence: Surface hydrophilic diffusion layer (8): bamboo fiber or regenerated cellulose nonwoven fabric, with a surface density of 30-120 g / m² 2 ; The flow guide layer (9) is a capillary channel network: PLA / cotton blended network or punched texture, with a channel width of 0.2-0.6mm and an inclination angle of 15-30°; Waterproof and breathable membrane layer (10): Microporous TPU membrane, thickness 15-40μm, moisture permeability ≥3000g / m 2 ·24h; Buffer insulation layer (11): cork 0.5-1.5mm or EVA micro-foam 0.6-1.8mm; Anti-slip layer (12): Natural rubber / bio-based elastomer substrate.

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