WO2022110810A1 - 环保餐具 - Google Patents

环保餐具 Download PDF

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Publication number
WO2022110810A1
WO2022110810A1 PCT/CN2021/104130 CN2021104130W WO2022110810A1 WO 2022110810 A1 WO2022110810 A1 WO 2022110810A1 CN 2021104130 W CN2021104130 W CN 2021104130W WO 2022110810 A1 WO2022110810 A1 WO 2022110810A1
Authority
WO
WIPO (PCT)
Prior art keywords
handle
edge
main body
thickness
friendly tableware
Prior art date
Application number
PCT/CN2021/104130
Other languages
English (en)
French (fr)
Inventor
黄锦耀
Original Assignee
沙伯特（中山）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 沙伯特（中山）有限公司 filed Critical 沙伯特（中山）有限公司
Priority to AU2021388638A priority Critical patent/AU2021388638A1/en
Priority to CA3185781A priority patent/CA3185781A1/en
Priority to JP2023507528A priority patent/JP7518968B2/ja
Priority to MX2023006348A priority patent/MX2023006348A/es
Priority to US18/018,098 priority patent/US20230284807A1/en
Priority to KR1020237004081A priority patent/KR20230031961A/ko
Priority to EP21896318.9A priority patent/EP4173527A4/en
Publication of WO2022110810A1 publication Critical patent/WO2022110810A1/zh

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/02—Forks; Forks with ejectors; Combined forks and spoons; Salad servers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/02—Forks; Forks with ejectors; Combined forks and spoons; Salad servers
    • A47G21/023—Forks; Forks with ejectors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/04—Spoons; Pastry servers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G2400/00—Details not otherwise provided for in A47G19/00-A47G23/16
    • A47G2400/10—Articles made from a particular material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B3/00—Hand knives with fixed blades
    • B26B3/02—Table-knives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Definitions

  • the invention relates to the field of tableware, in particular to an environmentally friendly tableware made of environmentally friendly materials such as pulp.
  • Disposable tableware is a common tableware.
  • disposable tableware is mainly plastic tableware, such as plates, knives, forks, spoons, etc. made of plastic.
  • Plastic tableware is usually made of materials that can be in direct contact with food.
  • biodegradable such as PP, PET, PE, etc. Therefore, people began to consider researching degradable tableware to replace plastic tableware.
  • tableware made of polylactic acid (PLA) material is an industrial degradable tableware that can replace plastic tableware.
  • PLA polylactic acid
  • pulp molded tableware is the most popular environmentally friendly tableware in the market in recent years. This tableware has the advantages and characteristics of replacing some plastic tableware.
  • pulp molded tableware is mainly made of raw materials such as paper, which has low hardness and is easy to deform during use.
  • the teeth of the fork are prone to breakage, and there are also problems such as bending and deformation between the handles of the knife, fork, and spoon and the operation part (hereinafter referred to as "main body part").
  • main body part the operation part
  • the section at the handle includes the bottom wall and two When the user holds the handle, they often press their fingers against the two side walls of the handle, causing the two side walls to deform toward the middle. After holding the handle, the handle is easily deformed, especially when the knife needs to be forced to cut food, it is more likely to cause deformation of the handle due to excessive holding force, which affects the use of pulp molded tableware.
  • some existing pulp molded tableware are provided with reinforcing ribs on the main body or handle, but the reinforcing ribs are recessed in one direction, that is, the reinforcing ribs are recessed from one plane to one direction, so that the reinforcing ribs are recessed in one direction.
  • the slope at the edge of the rib has a sudden change, and during molding, the edge of the reinforcing rib is prone to cracking, resulting in an increase in the defect rate of pulp molded tableware.
  • the first object of the present invention is to provide an environment-friendly tableware with high strength and not easily deformed.
  • the second object of the present invention is to provide an environmentally friendly tableware that is not easy to crack and has a high yield during molding.
  • the environmental protection tableware includes a handle and a main body part, and the main body part is located at one end of the handle; wherein, on a section in the extension direction of the handle, the handle has a bottom wall and side walls at both ends of the bottom wall, The free end of the side wall is provided with a first edge sheet, the thickness of the first edge sheet is equal to the thickness of the side wall, and the corner of the first edge sheet is an arc chamfer.
  • a preferred solution is that the first edge sheets corresponding to the two side walls are on the same plane.
  • the side wall and the first edge sheet are arranged obliquely, and the included angle between the side wall and the first edge sheet is an obtuse angle.
  • a further solution is that the peripheral edge of the main body portion is provided with a second edge sheet, and the thickness of the second edge sheet is equal to the thickness of the main body portion.
  • the environmentally friendly tableware is a fork
  • the main body is provided with more than two teeth
  • the peripheral edge of each tooth is provided with a second edge sheet.
  • a further solution is that at least one tooth is provided with a concave reinforcing portion in the middle. In this way, by further increasing the strength of the teeth by the reinforcing portion, the situation of the teeth breaking can be effectively avoided.
  • the environmentally friendly tableware is provided with reinforcing ribs, the reinforcing ribs extend from the handle to the main body, and on a cross-section in the extending direction of the reinforcing ribs, the reinforcing ribs include concave parts and convex parts at both ends of the concave part.
  • the concave portion has two adjacent first surfaces and second surfaces, and the included angle between the first surface and the second surface is between 110° and 140°.
  • a further solution is that the radius of curvature of the outer surface of the concave portion is between 2.0 mm and 2.5 mm; and/or the radius of curvature of the outer surface of the raised portion is between 2.5 mm and 3.0 mm; and/or the inner surface of the raised portion The radius of curvature is between 1.5mm and 2.0mm.
  • a further solution is that, on the cross section in the extending direction of the reinforcing rib, the thickness of the concave portion is smaller than the thickness of the reinforcing rib.
  • the thickness of the concave portion is the distance from the end point of the convex portion closest to the upper surface of the environmentally friendly tableware to the end point of the concave portion closest to the lower surface of the environmentally friendly tableware.
  • the thickness of the reinforcing rib is the distance from the end point of the raised portion closest to the upper surface of the environmentally friendly tableware to the first edge sheet closest to the lower surface of the environmentally friendly tableware.
  • first edge sheets are arranged on the free ends of the two side walls of the handle.
  • the fingers will press against the two first edge sheets, so that force is applied to the side walls through the two edge sheets.
  • the applied force is loaded on the side wall in a direction perpendicular to the side wall, so as to avoid loading the oblique upward force on the side wall, thereby changing the direction of the loaded force and reducing the uneven distribution of stress received by the side wall.
  • the force applied to the two first edge sheets disappears, the two side walls can spring back to avoid the situation that the handle is damaged and cannot be used further.
  • the thickness of the first edge sheet is equal to the thickness of the side wall, on the one hand, the thicker first edge sheet is used to increase the anti-extrusion ability of the handle.
  • the distance between the lower molds can be kept fixed, and the molding process is simple, which is beneficial to the production of environmentally friendly tableware.
  • the corner of the first edge sheet is set as a circular arc chamfer, that is, no edge is set at the corner of the first edge sheet, so that the user can avoid touching the edge of the first edge sheet when holding the handle. In case of discomfort, the user can better apply force in opposite directions to avoid damage to the handle.
  • the open end of the handle section is relatively large. It does not cause a fundamental change in the shape of the handle and can improve the strength of the handle.
  • the present invention improves the strength of the main body by arranging the second edge sheet on the main body, so as to avoid the situation that the environmental protection tableware cannot be used due to the deformation of the main body during use.
  • the environmentally friendly tableware is a fork
  • a second edge sheet is arranged on the periphery of each tooth, and the strength of each tooth is increased by the second edge sheet, so as to avoid tooth breakage during the use of the fork.
  • the reinforcing portion by further increasing the strength of the teeth by the reinforcing portion, the situation that the teeth are broken can be effectively avoided.
  • the strength of the handle and the main body can be increased by the reinforcing rib, especially the strength of the connection between the handle and the main body.
  • the reinforcing rib includes a concave portion and a convex portion, that is, the cross-section of the reinforcing rib is wavy, rather than concave in a single direction, so the slope at the edge of the reinforcing rib will not change abruptly.
  • the edge of the reinforcing rib is not prone to cracking, thereby greatly improving the yield of pulp molded tableware.
  • the present invention can disperse the stress of the reinforcing rib by setting a suitable angle between the two surfaces of the concave portion, and effectively improve the bending resistance strength of the environmental protection tableware.
  • the present invention reduces the thickness of the concave portion, which is beneficial to the packaging and transportation of the environmental protection tableware, and avoids the packaging and use of the environmental protection tableware from being affected due to the excessive thickness of the concave portion of the reinforcing rib.
  • FIG. 1 is a structural diagram of a first embodiment of the present invention.
  • FIG. 2 is a front view of the first embodiment of the present invention.
  • FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2 .
  • FIG. 4 is an enlarged cross-sectional view taken along the line B-B in FIG. 2 .
  • FIG. 5 is an enlarged cross-sectional view taken along the C-C direction in FIG. 2 .
  • FIG. 6 is an enlarged cross-sectional view taken along the C-C direction in FIG. 2 .
  • FIG. 7 is an enlarged view of D in FIG. 3 .
  • FIG. 8 is a structural diagram of a second embodiment of the present invention.
  • FIG. 9 is a front view of the second embodiment of the present invention.
  • FIG. 10 is a cross-sectional view taken along the line E-E in FIG. 9 .
  • FIG. 11 is an enlarged cross-sectional view taken along the F-F direction in FIG. 9 .
  • FIG. 12 is an enlarged view of G in FIG. 10 .
  • FIG. 13 is an enlarged view of H in FIG. 10 .
  • FIG. 14 is a structural diagram of a third embodiment of the present invention.
  • Fig. 15 is a front view of the third embodiment of the present invention.
  • FIG. 16 is a cross-sectional view taken along the line I-I in FIG. 15 .
  • FIG. 17 is an enlarged cross-sectional view taken along the J-J direction in FIG. 15 .
  • FIG. 18 is an enlarged view of K in FIG. 16 .
  • FIG. 19 is a structural diagram of a fourth embodiment of the present invention.
  • Fig. 20 is a front view of the fourth embodiment of the present invention.
  • FIG. 21 is an enlarged cross-sectional view taken along the line L-L in FIG. 20 .
  • FIG. 22 is an enlarged cross-sectional view taken along the M-M direction in FIG. 20 .
  • FIG. 23 is a cross-sectional view taken along the N-N direction in FIG. 20 .
  • FIG. 24 is an enlarged view of the point P in FIG. 23 .
  • Fig. 25 is a cross-sectional view of a spoon handle as a comparative example.
  • the environmentally friendly tableware of the present invention is a disposable tableware, and is formed by using environmentally friendly and naturally degradable materials such as pulp and plant fibers through molding and hot pressing.
  • the tableware is environmentally friendly and can be degraded in the natural environment, even after use. It is not easy to pollute the environment after being thrown away.
  • the environmentally friendly tableware of the present invention is mainly tableware with handles and a main body such as knives, spoons, forks, etc. Therefore, the present invention mainly improves the handle and the main body to improve the bending strength of the environmental protection tableware.
  • the environmentally friendly tableware of this embodiment is a pulp molded spoon
  • the spoon has a long handle 10 and a main body 20
  • the main body 20 is arranged at one end of the handle 10 .
  • the user usually holds the handle 10 with their fingers, and the main body 20 is used to hold food.
  • the main body 20 usually touches a hard object such as a plate, so the main body 20 and the handle 10
  • the connection is the most prone to bending, once the main body 20 is bent relative to the handle 10, the spoon will not be able to continue to use, in order to strengthen the hardness of the connection between the main body 20 and the handle 10, the Reinforcing ribs 30 are arranged between the main body parts 20 .
  • the reinforcing rib 30 is substantially elongated and extends from the handle 10 to the main body portion 20.
  • the reinforcing rib 30 is recessed from the upper surface of the spoon toward the lower surface, and, in the reinforcement On the cross section in the extending direction of the rib 30 , the reinforcing rib 30 includes a concave portion 33 and convex portions 34 and 36 located at both ends of the concave portion 33 .
  • the bottom wall of the recessed portion 33 is not a plane.
  • the recessed portion 33 has a first surface 31 and a second surface 32.
  • the angle ⁇ formed between the first surface 31 and the second surface 32 is an obtuse angle, preferably The included angle ⁇ is between 110° and 140°, and more preferably, the included angle ⁇ is between 120° and 130°.
  • a side wall 35 is connected to one end of the first surface 31, and a raised portion 34 is formed between the side wall 35 and the first surface 31; Raised portions 36 are formed between the surfaces 32 .
  • the cross-section of the reinforcing rib 30 is not concave in one direction, but has a concave-convex shape in two directions, that is, the concave portion 33 is concave from the upper surface of the spoon to the downward surface, while the two The protruding parts 34 and 36 protrude from the lower surface of the spoon toward the upper surface, so that the cross-section of the reinforcing rib 30 is wavy, and the concave part 33 and the protruding parts 34 and 36 do not form a plane to an inclined plane.
  • a sudden change in the slope of the pulp that is, no edge will be formed. In this way, during molding, it is not easy to form cracks at the concave portion 33 and the convex portion 34, 36, which improves the yield of pulp molding spoons. .
  • the radius of curvature R2 of the outer surface of the concave portion 33 is between 2.0 mm and 2.5 mm, and the outer surface of the concave portion 33 is the surface of the concave portion 33 close to the lower surface of the spoon;
  • the radius of curvature R3 of the outer surfaces of the convex portions 34 and 36 is between 2.5 mm and 3.0 mm, wherein, the outer surfaces of the raised parts 34, 36 are the surfaces of the raised parts 34, 36 close to the upper surface of the spoon;
  • the radius of curvature R1 of the inner surfaces of the raised parts 34, 36 is 1.5 mm to 2.0 mm, wherein the inner surfaces of the raised portions 34, 36 are the surfaces of the raised portions 34, 36 close to the lower surface of the spoon.
  • edge sheet 38 is connected to the free end of the side wall 35
  • an edge sheet 39 is connected to the free end of the side wall 37 .
  • the provision of edge sheets 38 and 39 can increase the bending strength of the reinforcing rib 30 and prevent the reinforcing rib 30 from being squeezed and deformed.
  • the thickness of the concave portion 33 is D1, that is, the distance from the end point of the convex portion 34 closest to the top surface of the spoon to the end point of the concave portion 33 closest to the bottom surface of the spoon is D1.
  • the thickness of the reinforcing rib 30 is D2, that is, the distance between the end point of the raised portion 34 closest to the upper surface of the spoon to the edge sheet 38 closest to the lower surface of the spoon is D2. It can be seen from FIG. 4 that the thickness D1 of the concave portion 33 is smaller than the thickness D2 of the reinforcing rib 30 .
  • the handle 10 is designed as a hollow shape with one side open.
  • the section of the handle 10 in the extension direction of the handle 10, includes a bottom wall 11 and a bottom wall located on the bottom wall.
  • the side wall 12 and the bottom wall 11 are in arc transition, that is, no edge is provided between the side wall 12 and the bottom wall 11 .
  • the side wall 13 is connected to the bottom wall 11 , the other end of the side wall 13 is a free end, and a first edge sheet 15 is provided at the free end of the side wall 13 .
  • the side wall 13 and the bottom wall 11 have a circular arc transition, that is, no edge is provided between the side wall 13 and the bottom wall 11 . Therefore, the handle 10 forms a depression 16 in the direction towards the lower side of the spoon, and the free ends of the two side walls 12, 13 can be brought closer to each other under the condition of force.
  • first edge sheets 14 and 15 are respectively provided on the two opposite side walls 12 and 13.
  • the two first edge sheets 14 and 15 are located on the same surface, so that when When the user holds the handle 10, the applied force F1 acts on the ends of the first edge sheets 14 and 15 respectively, and the applied force F1 is opposite and directed towards the middle of the handle. In this way, the side walls 12 and 13 are forced toward the middle and deformed. When the applied force F1 disappears, the side walls 12 and 13 will rebound. Due to the small elasticity of the pulp and other materials, the rebound of the side walls 12 and 13 is not large. , the side walls 12 and 13 can still rebound within a certain range, thereby preventing the handle 10 from being seriously deformed.
  • the spoon handle is provided with a bottom wall 18 and two side walls 19.
  • the side walls 19 When the user holds the handle, it will be directly pressed on the side walls 19.
  • the position of pressing the side wall 19 is not fixed. If the user presses the free end of the side wall 19, the direction of the applied force is often not opposite, but inclined, which will cause uneven force on the side wall 19. , it is easy to cause serious deformation of the side wall 19, causing the two side walls 19 to move inward, affecting the use of the spoon.
  • the side wall 12 and the first edge sheet 14 are not vertically arranged, but are inclined to each other, and the side wall 12 is roughly arc-shaped, and the angle between the side wall 12 and the first edge sheet 14 is an obtuse angle .
  • the side wall 13 and the first edge sheet 15 are also inclined to each other, the side wall 13 is roughly arc-shaped, and the angle between the side wall 13 and the first edge sheet 15 is also an obtuse angle.
  • the thicknesses of the first edge sheets 14 and 15 are equal, and the thicknesses of the first edge sheets 14 and 15 are equal to the thicknesses of the side walls 12 and 13.
  • the thicknesses of the first edge sheets 14 and 15 are designed to be If the thickness is larger, the anti-extrusion capability of the first edge sheets 14 and 15 can be improved, and the thickness of the first edge sheets 14 and 15 can be prevented from being easily deformed by extrusion.
  • the distance between the upper and lower molds can be kept uniform.
  • the spoon of this embodiment is formed by pressing a molding machine. For this reason, during hot pressing, only the distance between the upper mold and the lower mold needs to be adjusted, that is, a spoon that meets the thickness requirements can be formed by pressing.
  • the structure is simple, which is beneficial to simplify the molding process of the spoon.
  • a first edge sheet is also provided at the end of the handle 10 .
  • the free end of the handle 10 is also provided with a first edge sheet.
  • the thickness of the edge sheet 17 , the first edge sheet 17 is equal to the thickness of the handle 10 .
  • the corners of the first edge sheets 14, 15, and 17 are all chamfered with circular arcs, that is, no edges are provided. When the user holds the handle 10, the user does not feel discomfort by pressing the edge. It can be seen that, by arranging a circle of first edge sheets on the periphery of the handle 10, the overall bending resistance of the handle 10 can be improved.
  • a second edge sheet 21 is disposed on the periphery of the main body portion 20 of the spoon.
  • the thickness of the second edge sheet 21 is equal to the thickness of the main body portion 20
  • the second edge sheet 21 extends around the circumference of the main body portion 21 .
  • the corners of the second edge sheet 21 are also designed as circular arc chamfers.
  • the purpose of disposing the second edge sheet 21 on the periphery of the main body portion 20 is to improve the bending resistance of the main body portion 20 and prevent the main body portion 20 from being bent and deformed by force.
  • the thickness of the entire spoon is the same, that is, the thickness of each part of the handle 10, the main body 20 and the reinforcing rib 30 is the same.
  • This design can simplify the production process of the spoon. It is made of pulp molding and hot pressing. Therefore, when using a compression molding machine to press and shape, it is necessary to place the wet blank on the lower mold, and control the thickness of the formed spoon by controlling the distance of the upper mold going down. Therefore, during hot pressing, it is necessary to control the distance between the lower mold and the lower mold, that is, a spoon with uniform thickness can be obtained by pressing, and the design of the upper mold and the lower mold is simple, and the control is not complicated.
  • the thickness of the spoon may be between 0.2 mm and 5.0 mm, preferably between 0.5 mm and 1.0 mm.
  • the cross-section of the reinforcing rib 30 is designed to be wavy, and the first edge sheet is provided on the periphery of the handle 10, and the second edge sheet is provided on the periphery of the main body portion 20, which can facilitate the stacking of spoons.
  • the stacking and positioning of a plurality of spoons can be conveniently realized, thereby facilitating the realization of automatic production and facilitating the transportation of the spoons. Before the spoon is used, one spoon can be easily separated from a plurality of stacked spoons, so that the spoon can be easily taken.
  • the environmentally friendly tableware of this embodiment is a knife made of environmentally friendly materials.
  • the knife includes a handle 40 and a main body 50 . Since the connection between the main body part 50 and the handle 40 is the most likely place to bend, in order to strengthen the hardness of the connection between the main body part 50 and the handle 40 , a reinforcing rib 60 is provided between the handle 40 and the main body part 50 in this embodiment.
  • the reinforcing rib 60 is substantially elongated and extends from the handle 40 to the main body portion 50. Referring to FIG. 11, the reinforcing rib 60 is recessed from the upper surface of the knife to the lower surface, and the cross-section in the extending direction of the reinforcing rib 60 is , the reinforcing rib 60 includes a concave portion 63 and convex portions 64 and 65 located at both ends of the concave portion 63 .
  • the bottom wall of the concave portion 63 is not flat.
  • the concave portion 63 has two adjacent surfaces, and the included angle formed between the two surfaces is an obtuse angle.
  • the included angle is between 110° and 140°.
  • the included angle is between 120° and 130°.
  • both ends of the recessed portion 33 are respectively provided with side walls 61 and 62 , a raised portion 64 is formed between the side wall 61 and the recessed portion 33 , and a raised portion 65 is formed between the side wall 62 and the recessed portion 63 .
  • the cross-section of the reinforcing rib 60 is not concave in one direction, but has a concave-convex shape in two directions, that is, the concave portion 63 is concave from the upper surface of the knife to the lower surface, and the two The protruding portions 64 and 65 protrude from the lower surface of the knife toward the upper surface, so that the cross-section of the reinforcing rib 60 is wavy, and the concave portion 63 and the protruding portions 64 and 65 do not form a plane from a plane.
  • the slope of the inclined surface changes abruptly, that is, no edge is formed, so that during molding, it is not easy to form cracks at the concave part 63 and the convex part 64, 65, and the pulp molding table knife is improved. yield.
  • the radius of curvature of the inner and outer surfaces of the concave portion 63 and the convex portions 64, 65 it is avoided that the radius of curvature of the inner and outer surfaces of the concave portion 63 and the convex portions 64, 65 is too small to cause molding. Cracks occur on the surface of the recessed portion 63 or the raised portions 64, 65.
  • the thickness of the recessed portion 63 is smaller than the total thickness of the reinforcing rib 60 .
  • An edge sheet 67 is connected to the free end of the side wall 62 , and the thickness of the edge sheet 67 is equal to the thickness of the side wall 62 .
  • the provision of the edge sheet 67 can increase the bending strength of the reinforcing rib 60 and prevent the reinforcing rib 60 from being compressed and deformed.
  • the handle 40 is designed as a hollow shape with one side open, that is, in the extending direction of the handle 40, the cross-section of the handle 40 includes a bottom wall and side walls at both ends of the bottom wall.
  • One end of the side wall is connected to the bottom wall, the other end of the side wall is a free end, and a first edge sheet is arranged at the free end of the side wall.
  • the first edge sheets on the two side walls are located on the same surface, so that when the user holds the handle 40, the applied force acts on the ends of the first edge sheets respectively, and after the two side walls are stressed Towards the middle and deforms. When the applied force is removed, the two side walls will spring back.
  • the thicknesses of the two first edge sheets are equal, and the thickness of the first edge sheet and the thickness of the side walls are also equal.
  • the cross-sectional shape of the handle 40 in this embodiment is basically the same as that of the handle in the first embodiment, and details are not described herein again.
  • a first edge sheet 42 is also provided at the free end of the handle 40 , and the thickness of the first edge sheet 42 is equal to that of the handle 40 . It can be seen that the peripheral edge of the handle 40 is provided with the first edge sheet, and the corners of the first edge sheet are all arc-chamfered, that is, no edge is provided. When the user holds the handle 40, the user does not feel discomfort by pressing the edge.
  • a plurality of teeth 51 are provided on one side of the main body portion 50 of the knife, and a second edge sheet 52 is provided on the other side of the main body portion 50 .
  • a second edge sheet 53 is provided at the end of the main body part 50.
  • the thickness of the second edge sheets 52, 53 is equal to the thickness of the main body part 50, and the corners of the second edge sheets 52, 53 are It is also designed as an arc chamfer.
  • the purpose of disposing the second edge sheets 52 and 53 on the main body portion 50 is to improve the bending resistance of the main body portion 50 and prevent the main body portion 50 from being bent and deformed by force.
  • the cross-section of the reinforcing rib 60 is designed to be wavy, and the first edge sheet is provided on the periphery of the handle 40 and the second edge sheet is provided on the main body portion 50, which can facilitate the stacking of table knives, and can be convenient in the production process. It realizes the stacking and positioning of multiple table knives, so as to facilitate the realization of automatic production and also facilitate the transportation of table knives. Before the table knife is used, one table knife can be easily separated from a plurality of table knives stacked, so that the table knife can be easily taken.
  • the environmentally friendly tableware of this embodiment is a fork made of environmentally friendly materials.
  • the fork includes a handle 70 and a main body 80 .
  • the handle 70 is elongated and the main body 80 is located at one end of the handle 70 . Since the connection between the main body part 80 and the handle 70 is the most likely place to bend, in order to strengthen the hardness of the connection between the main body part 80 and the handle 70 , a reinforcing rib 90 is provided between the handle 70 and the main body part 80 in this embodiment.
  • the reinforcing rib 90 is substantially elongated and extends from the handle 70 to the main body portion 80. Referring to FIG. 17, the reinforcing rib 90 is recessed from the upper surface of the fork to the lower surface direction, and, in the cross section in the extending direction of the reinforcing rib 90, The reinforcing rib 90 includes a concave portion 99 and convex portions 95 and 96 located at both ends of the concave portion 99 .
  • the bottom wall of the concave portion 99 is not a plane.
  • the concave portion 99 has adjacent first surfaces 91 and second surfaces 92, and the included angle formed between the first surfaces 91 and the second surfaces 92 is an obtuse angle, preferably Yes, the included angle is between 110° and 140°, and more preferably, the included angle is between 120° and 130°.
  • one end of the first surface 91 is connected with a side wall 93
  • one end of the second surface 92 is connected with a side wall 94
  • a protrusion 95 is formed between the first surface 91 and the side wall 93
  • the second surface 92 and the side wall 94 Protrusions 96 are formed therebetween.
  • the cross-section of the reinforcing rib 90 is not concave in one direction, but has a concave-convex shape in two directions, that is, the concave portion 99 is concave from the upper surface of the fork to the lower surface, while the two The protruding parts 95 and 96 protrude from the lower surface of the fork toward the upper surface, so that the cross-section of the reinforcing rib 90 is wavy, and the concave part 99 and the protruding parts 95 and 96 do not form a flat surface to an inclined surface.
  • the concave part 99 and the protruding parts 95 and 96 do not form a flat surface to an inclined surface.
  • the radius of curvature of the inner and outer surfaces of the concave portion 99 and the convex portions 95, 96 it is avoided that the radius of curvature of the inner and outer surfaces of the concave portion 99 and the convex portions 95, 96 is too small to cause molding.
  • the thickness of the recessed portion 99 is smaller than the total thickness of the reinforcing rib 90 .
  • edge sheet 97 is connected to the free end of the side wall 93, the thickness of the edge sheet 97 is equal to the thickness of the side wall 92, and an edge sheet 98 is connected to the free end of the side wall 94, and the thickness of the edge sheet 98 is the same as the thickness of the side wall 94. equal.
  • the provision of edge sheets 97 and 98 can increase the bending strength of the reinforcing rib 90 and prevent the reinforcing rib 90 from being squeezed and deformed.
  • the handle 70 is designed as a hollow shape with one side open, that is, in the extending direction of the handle 70, the cross-section of the handle 70 includes a bottom wall and side walls at both ends of the bottom wall.
  • One end of the side wall is connected to the bottom wall, the other end of the side wall is a free end, and a first edge sheet is arranged at the free end of the side wall.
  • the first edge sheets on the two side walls are located on the same surface, so that when the user holds the handle 70, the applied force acts on the ends of the first edge sheets respectively, and after the two side walls are stressed Towards the middle and deforms. When the applied force is removed, the two side walls will spring back.
  • the thicknesses of the two first edge sheets are equal, and the thickness of the first edge sheet and the thickness of the side walls are also equal.
  • the cross-sectional shape of the handle 70 in this embodiment is basically the same as that of the handle in the first embodiment, and details are not repeated here.
  • a first edge sheet 71 is also provided at the free end of the handle 70 , and the thickness of the first edge sheet 71 is equal to that of the handle 70 . It can be seen that the peripheral edges of the handle 70 are all provided with first edge sheets, and the corners of the first edge sheets are all chamfered with arcs, that is, no edges are provided. When the user holds the handle 70, the user does not feel discomfort by pressing the edge.
  • a second edge sheet 83 is provided on the periphery of the main body portion 80 of the fork, and four teeth 81 are provided on the main body portion 80 of the fork, and the periphery of each tooth 81 is provided with a second edge sheet 84, and the third
  • the thicknesses of the two edge sheets 83 and 84 are equal to the thickness of the main body portion 80
  • the corners of the second edge sheets 83 and 84 are also designed to be chamfered with circular arcs. It can be seen that the second edge sheets are arranged on the periphery of the main body 80 .
  • the purpose of arranging the second edge sheets 83 and 84 on the main body 80 is to improve the bending strength of the main body 80 and prevent the main body 80 from being bent and deformed by force.
  • a recessed reinforcement portion 82 is provided in the middle of the two middle teeth 81, and the reinforcement portion 82 is recessed from the upper surface of the fork toward the lower surface.
  • the bending resistance of the teeth 81 can be improved by the reinforcement portion 82, so as to prevent the teeth 81 from breaking during the use of the fork.
  • the cross-section of the reinforcing rib 90 is designed to be wavy, and the first edge sheet is provided on the periphery of the handle 70, and the second edge sheet is provided on the periphery of the main body portion 80, which can facilitate the stacking of the forks, and can be used in the production process. It is convenient to realize the stacking and positioning of multiple forks, so as to facilitate the realization of automatic production and also facilitate the transportation of the forks. Before the fork is used, one fork can be easily separated from the stacked forks, so that the fork can be easily taken.
  • the environment-friendly tableware of this embodiment is a fork made of environment-friendly materials.
  • the difference from the third embodiment is that the fork of this embodiment is provided with three teeth.
  • the fork includes a handle 1100 and a main body 120 , the handle 110 is in the shape of a long strip, and the main body 120 is located at one end of the handle 110 . Since the connection between the main body part 120 and the handle 110 is the most prone to bending, in order to strengthen the hardness of the connection between the main body part 120 and the handle 110 , a reinforcing rib 130 is provided between the handle 10 and the main body part 120 in this embodiment.
  • the reinforcing rib 130 is substantially elongated and extends from the handle 110 to the main body portion 120. Referring to FIG. 21, the reinforcing rib 130 is recessed from the upper surface of the fork toward the lower surface, and, on a cross-section in the extending direction of the reinforcing rib 130, The reinforcing rib 130 includes a concave portion 131 and protruding portions 134 and 135 located at both ends of the concave portion 131 .
  • the bottom wall of the recessed portion 131 is not a plane.
  • the recessed portion 131 has adjacent first surfaces 132 and second surfaces 133, and the included angle formed between the first surfaces 132 and the second surfaces 133 is an obtuse angle, preferably Yes, the included angle is between 110° and 140°, and more preferably, the included angle is between 120° and 130°.
  • one end of the first surface 132 is connected with a side wall 136
  • one end of the second surface 133 is connected with a side wall 137
  • a protrusion 134 is formed between the first surface 132 and the side wall 136
  • the second surface 133 and the side wall 137 Protrusions 135 are formed therebetween.
  • the cross-section of the reinforcing rib 130 is not concave in one direction, but has a concave-convex shape in two directions, that is, the concave portion 131 is concave from the upper surface of the fork to the lower surface, while the two The protruding parts 132 and 135 protrude from the lower surface of the fork toward the upper surface, so that the cross-section of the reinforcing rib 130 is wavy, and the concave part 131 and the protruding parts 132 and 135 do not form a plane to inclined surface.
  • the concave part 131 and the protruding parts 132 and 135 do not form a plane to inclined surface.
  • no edge will be formed. In this way, during molding, it is not easy to form cracks at the concave part 131 and the convex parts 132 and 135, which improves the yield of the pulp molding fork. .
  • the radius of curvature of the inner and outer surfaces of the concave portion 131 and the convex portions 132, 135 it is avoided that the radius of curvature of the inner and outer surfaces of the concave portion 131 and the convex portions 132, 135 is too small to cause molding.
  • the thickness of the recessed portion 131 is smaller than the total thickness of the reinforcing rib 130 .
  • An edge sheet 138 is connected to the free end of the side wall 136, the thickness of the edge sheet 138 is equal to the thickness of the side wall 136, and an edge sheet 139 is connected to the free end of the side wall 137, and the thickness of the edge sheet 139 is equal to the thickness of the side wall 137 equal.
  • the provision of the edge sheets 138 and 139 can increase the bending strength of the reinforcing rib 130 and prevent the reinforcing rib 130 from being bent and deformed by extrusion.
  • the handle 110 is designed as a hollow shape with one side open, that is, in the extending direction of the handle 110, the cross-section of the handle 110 includes a bottom wall and side walls at both ends of the bottom wall.
  • One end of the side wall is connected to the bottom wall, the other end of the side wall is a free end, and a first edge sheet is arranged at the free end of the side wall.
  • the first edge sheets on the two side walls are located on the same surface, so that when the user holds the handle 110, the applied force acts on the ends of the first edge sheets respectively, and after the two side walls are stressed Towards the middle and deforms. When the applied force is removed, the two side walls will spring back.
  • the thicknesses of the two first edge sheets are equal, and the thickness of the first edge sheet and the thickness of the side walls are also equal.
  • the cross-sectional shape of the handle 110 in this embodiment is basically the same as that of the handle in the first embodiment, and details are not repeated here.
  • the free end of the handle 110 is also provided with a first edge sheet 111 , and the thickness of the first edge sheet 111 is equal to that of the handle 110 . It can be seen that the peripheral edge of the handle 110 is provided with the first edge sheet, and the corners of the first edge sheet are all arc-chamfered, that is, no edge is provided. When the user holds the handle 110, the user does not feel discomfort by pressing the edge.
  • a second edge sheet 123 is provided on the periphery of the main body portion 120 of the fork, and three teeth 121 are provided on the main body portion 120 of the fork, and the periphery of each tooth 121 is provided with a second edge sheet 124, and the thickness of the second edge sheets 123, 124 is equal to the thickness of the main body portion 120, and the corners of the second edge sheets 123, 124 are also designed to be chamfered arcs.
  • the second edge sheets are provided on the periphery of the main body 120 , and the purpose of arranging the second edge sheets 123 and 124 on the main body 120 is to improve the bending strength of the main body 120 and prevent the main body 120 from being bent and deformed by force.
  • a recessed reinforcement portion 122 is provided in the middle of the three teeth 121, and the reinforcement portion 122 is recessed from the upper surface of the fork toward the lower surface.
  • the bending resistance of the teeth 121 can be improved by the reinforcement portion 122, so as to prevent the teeth 121 from breaking during the use of the fork.
  • the cross-section of the reinforcing rib 130 is designed to be wavy, and the first edge sheet is provided on the periphery of the handle 110, and the second edge sheet is provided on the periphery of the main body portion 120, which can facilitate the stacking of the forks, and can be used in the production process. It is convenient to realize the stacking and positioning of multiple forks, so as to facilitate the realization of automatic production and also facilitate the transportation of the forks. Before the fork is used, one fork can be easily separated from the stacked forks, so that the fork can be easily taken.
  • the present invention is not limited to the above-mentioned embodiments, such as changes in the length and width of the handles of knives, forks, and spoons; or changes in the number of teeth on the main body of the fork; or changes in the thickness of knives, forks, and spoons, etc. , these changes should also be included in the protection scope of the claims of the present invention.
  • the environmentally friendly tableware of the present invention can be a knife, a fork, a spoon or a fork and spoon, etc., and is made of environmentally friendly materials, which is environmentally friendly.
  • the first edge sheets are arranged on the free ends of the two side walls of the handle. When the user holds the handle, the fingers will be pressed against the two first edge sheets. Apply force to the side wall, the applied force is loaded on the side wall in a direction perpendicular to the side wall, avoiding the loading of oblique upward force on the side wall, thereby changing the direction of the loaded force and reducing the stress distribution received by the side wall
  • the uneven situation makes the environmentally friendly tableware of the present invention have good bending resistance, and is not easy to be broken during use.

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Abstract

本发明涉及餐具领域，具体的，提供一种环保餐具，包括手柄以及主体部，主体部位于手柄的一端；其中，在手柄延伸方向的截面上，手柄具有底壁以及位于底壁两端的侧壁，侧壁的自由端设置有第一边缘薄片，第一边缘薄片的厚度与侧壁的厚度相等，且第一边缘薄片的转角处为圆弧倒角。

Description

环保餐具 技术领域
本发明涉及餐具领域，具体是涉及一使用纸浆等环保材料制成的环保餐具。
 背景技术
一次性餐具是常见的餐具，目前一次性餐具主要是塑料餐具，例如使用塑料制成的盘子、餐刀、叉子、勺子等。塑料餐具通常使用可直接与食品接触的材料制成，随着人们环保意识的不断增强，意识到市面绝大部分的塑料餐具都是不能生物降解的，如PP、PET、PE等。因此，人们开始考虑研究可降解的餐具来替代塑料餐具。其中，使用聚乳酸(PLA)材料制成的餐具是一种可以替代塑料餐具的工业可降解性的餐具。但是，由于聚乳酸材料成本较高，导致聚乳酸餐具价格昂贵，难以得到广泛应用。
因此，人们开始考虑使用对环境更加友好且生产成本低廉的材料制作一次性使用的环保餐具。其中，纸浆模塑餐具是近几年市场上比较流行的环保餐具，这种餐具具有替代部分塑料餐具的优势和特点。现有的纸浆模塑餐具的生产时，需要把纸、植物残渣等原料碎解形成一定浓度浆水溶液，通过真空系统将水吸走而形成湿坯，再通过高温热压将湿坯干燥，从而形成干产品。
但是，纸浆模塑餐具主要是使用纸等原材料制成，硬度较低，使用过程中容易变形，如制成餐刀、叉子、勺子等餐具，其手柄容易在使用者握持一段时间后变形，且叉子的齿存在容易断裂的问题，还存在餐刀、叉子、勺子的手柄与操作部(下文称为“主体部”)之间弯曲变形等问题。一旦餐刀、叉子、勺子等餐具弯曲变形，该餐具就不能够再继续使用，限制了纸浆模塑餐具的推广应用。
为此，现有的一些纸浆模塑餐具在主体部的周缘设置薄片以增加主体部的强度，但并未考虑手柄处的受力变形的问题，例如，手柄处的截面上包括底壁以及两个侧壁，使用者握持手柄时，往往将手指抵压在手柄的两个侧壁上，导致两个侧壁向中部变形，由于纸浆模塑餐具的回弹性较差，当使用者长时间握持手柄后，手柄容易变形，尤其是握持餐刀需要用力切断食物时，更加容易因为握持力过大而导致手柄变形，影响纸浆模塑餐具的使用。
另一方面，现有的一些纸浆模塑餐具在主体部或者手柄设置加强筋条，但加强筋条向一个方向凹陷，即加强筋条是从一个平面向一个方向凹陷设置，这样，加强筋条的边缘处的斜率发生突变，在模塑成型时，加强筋条的边缘处容易发生开裂的情况，导致纸浆模塑餐具不良率增加。
 技术问题
本发明的第一目的是提供一种强度较大且不容易变形的环保餐具。
本发明的第二目的是提供一种模塑成型时不容易开裂且成品率较高的环保餐具。
 技术解决方案
为了实现上述的第一目的，本发提供的环保餐具包括手柄以及主体部，主体部位于手柄的一端；其中，在手柄延伸方向的截面上，手柄具有底壁以及位于底壁两端的侧壁，侧壁的自由端设置有第一边缘薄片，第一边缘薄片的厚度与侧壁的厚度相等，且第一边缘薄片的转角处为圆弧倒角。
一个优选的方案是，两个侧壁对应的第一边缘薄片在同一平面上。
进一步的方案是，侧壁与第一边缘薄片倾斜设置，且侧壁与第一边缘薄片之间夹角为钝角。
更进一步的方案是，主体部的周缘设置有第二边缘薄片，第二边缘薄片的厚度与主体部的厚度相等。
更进一步的方案是，该环保餐具为叉，主体部设置有二个以上的齿，每一齿的周缘均设置有第二边缘薄片。
更进一步的方案是，至少一个齿的中部设置有凹陷的加强部。这样，通过加强部进一步增加齿的强度，齿断裂的情况能够有效避免。
更进一步的方案是，环保餐具设置有加强筋条，加强筋条自手柄延伸至主体部，在加强筋条延伸方向的截面上，加强筋条包括凹陷部以及位于凹陷部两端的凸起部。
更进一步的方案是，凹陷部具有两个相邻接的第一表面及第二表面，第一表面与第二表面之间的夹角为110°至140°之间。
更进一步的方案是，凹陷部外侧表面的曲率半径为2.0毫米至2.5毫米之间；和/或凸起部外侧表面的曲率半径为2.5毫米至3.0毫米之间；和/或凸起部内侧表面的曲率半径为1.5毫米至2.0毫米之间。
更进一步的方案是，在加强筋条延伸方向的截面上，凹陷部的厚度小于加强筋条的厚度。
更进一步的方案是，凹陷部的厚度是凸起部最靠近环保餐具上表面的端点处到凹陷部最靠近环保餐具下表面端点处的距离。
更进一步的方案是，加强筋条的厚度是凸起部最靠近环保餐具上表面的端点处到第一边缘薄片最靠近环保餐具下表面之间的距离。
更进一步的方案是，加强筋条为波浪形。
 有益效果
本发明在手柄的两个侧壁自由端设置第一边缘薄片，当使用者握持手柄时，手指将抵压在两个第一边缘薄片上，这样，通过两个边缘薄片向侧壁施加力，施加的力以垂直于侧壁的方向加载在侧壁上，避免在侧壁上加载倾斜向上的力，从而改变了加载的力的方向，减少侧壁收到的应力分布不均匀的情况。当施加到两个第一边缘薄片上的力消失后，两个侧壁能够回弹，避免手柄损坏而无法继续使用的情况发生。
此外，由于第一边缘薄片的厚度与侧壁的厚度相等，一方面通过较厚的第一边缘薄片来增加手柄抗挤压的能力，另一方面，环保餐具在模塑成型时，上模与下模之间的距离保持固定即可，成型工艺简单，有利于环保餐具的生产。
将第一边缘薄片的转角处设置成圆弧倒角，即第一边缘薄片的转角处并不设置棱边，这样，可以避免使用者握持手柄时触碰到第一边缘薄片的棱边而产生不适感，使用者可以更好的以相对的方向施加作用力，避免手柄损坏。
并且，使用者握持手柄时，施加的作用力实际上是从同一个平面上向相向加载的，两个侧壁受力更加均匀，手柄不易损坏。
另外，由于侧壁与第一边缘薄片并不是相互垂直的，因此手柄截面的敞口端较大，在两个侧壁受力挤压发生轻微变形后，只是敞口端稍微向内靠拢，并不会导致手柄形状的根本性改变，能够提高手柄的强度。
本发明通过在主体部设置第二边缘薄片提高主体部的强度，避免主体部在使用过程中发生变形而导致环保餐具无法使用的情况发生。
当环保餐具为叉时，在每一个齿的周缘均设置第二边缘薄片，通过第二边缘薄片增加每一个齿的强度，避免叉子使用过程中出现齿断裂的情况发生。此外，通过加强部进一步增加齿的强度，齿断裂的情况能够有效避免。
并且，通过加强筋条可以增加手柄以及主体部的强度，尤其是增加手柄与主体部连接处的强度。由于加强筋条包括凹陷部以及凸起部，即加强筋条的截面成波浪形状，而不是朝向单一方向凹陷，因此加强筋条的边缘处的斜率并不会发生突变，在模塑成型时，加强筋条的边缘处并不容易发生开裂的情况，从而大大提高纸浆模塑餐具的成品率。
另外，本发明通过设置凹陷部两个表面之间合适的夹角，能够分散加强筋条的受力情况，有效提高环保餐具抗弯曲的强度。
此外，通过设置凹陷部外侧表面、凸起部外侧表面、凸起部内侧表面的曲率半径，可以避免因凹陷部、凸起部的曲率半径过小而导致模塑成型过程中出现开裂的情况，提高环保餐具的成品率。
而且本发明将凹陷部的厚度较小，有利于环保餐具的包装、运输，避免因加强筋条的凹陷部厚度过大而影响环保餐具的包装与使用。
 附图说明
图1是本发明第一实施例的结构图。
图2是本发明第一实施例的主视图。
图3是图2中A-A向的剖视图。
图4是图2中B-B向的剖视放大图。
图5是图2中C-C向的剖视放大图。
图6是图2中C-C向的剖面放大图。
图7是图3的D处放大图。
图8是本发明第二实施例的结构图。
图9是本发明第二实施例的主视图。
图10是图9中E-E向的剖视图。
图11是图9中F-F向的剖视放大图。
图12是图10的G处放大图。
图13是图10的H处放大图。
图14是本发明第三实施例的结构图。
图15是本发明第三实施例的主视图。
图16是图15中I-I向的剖视图。
图17是图15中J-J向的剖视放大图。
图18是图16的K处放大图。
图19是本发明第四实施例的结构图。
图20是本发明第四实施例的主视图。
图21是图20中L-L向的剖视放大图。
图22是图20中M-M向的剖视放大图。
图23是图20中N-N向的剖视图。
图24是图23的P处放大图。
图25是作为对比例的勺子手柄的剖视图。
以下结合附图及实施例对本发明作进一步说明。
 本发明的实施方式
本发明的环保餐具是一次性使用的餐具，并且使用纸浆、植物纤维等环保、自然可降解的材料经过模塑热压成型，这种餐具对环境友好，能够在自然环境下降解，即使使用完毕后扔弃后也不容易对环境造成污染。
本发明的环保餐具主要是餐刀、勺子、叉子等具有手柄以及主体部的餐具，因此，本发明主要针对手柄以及主体部进行改进以提高环保餐具抗弯曲的强度。
第一实施例：
参见图1至图3，本实施例的环保餐具为纸浆模塑成型的勺子，该勺子具有呈长条状的手柄10以及主体部20，主体部20设置在手柄10的一端。由于勺子使用时，使用者通常用手指握持手柄10，主体部20用于盛装食物，当勺子装取食物时，主体部20通常触碰到盘子等较硬的物体，因此主体部20与手柄10连接处是最容易发生弯折的地方，一旦主体部20相对于手柄10发生弯折，勺子将无法继续使用，为了加强主体部20与手柄10连接处的硬度，本实施例在手柄10与主体部20之间设置加强筋条30。
从图1与图2可见，加强筋条30大致呈长条状，从手柄10延伸至主体部20，参见图4，加强筋条30从勺子的上表面向下表面方向凹陷，并且，在加强筋条30延伸方向的截面上，加强筋条30包括凹陷部33以及位于凹陷部33两端的凸起部34、36。
凹陷部33的底壁并不是平面，本实施例中，凹陷部33具有第一表面31以及第二表面32，第一表面31与第二表面32之间形成的夹角α为一个钝角，优选的，夹角α在110°至140°之间，更优选的，夹角α在120°至130°之间。并且，在第一表面31的一端连接有侧壁35，侧壁35与第一表面31之间形成凸起部34；在第二表面32的一端连接有侧壁37，侧壁37与第二表面32之间形成凸起部36。
从图1与图2可见，加强筋条30的截面并不是朝向一个方向凹陷，而是朝向两个方向出现凹凸的形状，即凹陷部33从勺子的上表面向下表面方向凹陷，而两个凸起部34、36从勺子的下表面向上表面的方向凸起，这样，加强筋条30的截面成波浪形，在凹陷部33与凸起部34、36处并不会形成从平面到斜面的斜率突变的情况，也就是不会形成棱边，这样，在模塑成型时，在凹陷部33与凸起部34、36处并不容易形成开裂的情况，提高纸浆模塑勺子的成品率。
优选的，凹陷部33外侧表面的曲率半径R2为2.0毫米至2.5毫米之间，凹陷部33的外侧表面是凹陷部33靠近勺子下表面的表面；凸起部34、36外侧表面的曲率半径R3为2.5毫米至3.0毫米之间，其中，凸起部34、36外侧表面是凸起部34、36靠近勺子上表面的表面；凸起部34、36内侧表面的曲率半径R1为1.5毫米至2.0毫米之间，其中，凸起部34、36内侧表面是凸起部34、36靠近勺子下表面的表面。
通过设置凹陷部33外侧表面合理的曲率半径、凸起部34内侧表面、外侧表面合理的曲率半径，可以避免因将曲率半径设计过小而导致模塑成型时凹陷部33或者凸起部34、36的表面上出现开裂的情况发生。
在侧壁35的自由端连接有边缘薄片38，在侧壁37的自由端连接有边缘薄片39，优选的，边缘薄片38、39的厚度与侧壁35、37的厚度相等。设置边缘薄片38、39可以增加加强筋条30的抗弯曲强度，避免加强筋条30受挤压弯曲变形。
参见图4，凹陷部33的厚度为D1，即凸起部34最靠近勺子上表面的端点处到凹陷部33最靠近勺子下表面端点处的距离为D1。加强筋条30的厚度为D2，即凸起部34最靠近勺子上表面的端点处到边缘薄片38最靠近勺子下表面之间的距离为D2。从图4可见，凹陷部33的厚度D1小于加强筋条30的厚度D2。
为了提高手柄10的强度，本实施例将手柄10设计成一边敞口的中空形状，参见图5与图6，在手柄10的延伸方向上，手柄10的截面包括有底壁11以及位于底壁11两端的侧壁12、13，侧壁12的一端与底壁11相连，侧壁12的另一端为自由端，在侧壁12的自由端设置有第一边缘薄片14。优选的，侧壁12与底壁11圆弧过渡，即侧壁12与底壁11之间并不设置棱边。侧壁13的一端与底壁11相连，侧壁13的另一端为自由端，在侧壁13的自由端设置有第一边缘薄片15。优选的，侧壁13与底壁11圆弧过渡，即侧壁13与底壁11之间并不设置棱边。因此，手柄10在朝向勺子的下面方向上形成凹陷16，两个侧壁12、13的自由端可以在受力的情况下相互靠拢。
从图5与图6可见，在两个相对的侧壁12、13上分别设置有第一边缘薄片14、15，优选的，两片第一边缘薄片14、15位于同一表面上，这样，当使用者握持手柄10时，施加的力F1分别作用在第一边缘薄片14、15的端部，并且施加的力F1是相向并指向手柄的中部。这样，侧壁12、13受力后向中部靠拢并且发生变形。当施加的力F1消失后，侧壁12、13将发生回弹，由于纸浆等材料弹性较小，侧壁12、13回弹幅度不大，但只要加载在第一边缘薄片14、15不过大，侧壁12、13仍能够在一定范围内回弹，从而防止手柄10严重变形。
假设勺子手柄中并不设置第一边缘薄片，如图25所示，勺子手柄设置底壁18以及两个侧壁19，当使用者握持手柄时将直接按压在侧壁19上，由于使用者按压侧壁19的位置并不固定，如果使用者按压在侧壁19的自由端，施加的力的方向往往并不是相向的，而是倾斜的，将导致侧壁19受力不均匀的情况发生，容易导致侧壁19发生严重变形，致使两个侧壁19向内靠拢，影响勺子的使用。
本实施例中，侧壁12与第一边缘薄片14之间并不是垂直设置，而是相互倾斜，且侧壁12大致成弧形，侧壁12与第一边缘薄片14之间的角度为钝角。侧壁13与第一边缘薄片15也是相互倾斜，侧壁13大致成弧形，侧壁13与第一边缘薄片15之间的角度也是钝角。
优选的，第一边缘薄片14、15的厚度相等，且第一边缘薄片14、15的厚度与侧壁12、13的厚度相等，这样，一方面将第一边缘薄片14、15的厚度设计得较大，能够提高第一边缘薄片14、15抗挤压的能力，避免第一边缘薄片14、15厚度过小而导致容易受挤压变形。另一方面，在勺子模塑成型的过程中，上模与下模之间的距离可以保持均匀。本实施例的勺子使用压模机压制成型，为此，进行热压时，只需要调剂上模与下模之间的距离，即可以确保压制形成满足厚度要求的勺子，上模与下模的结构简单，有利于简化勺子的模塑成型工艺。
除了在手柄10的两个侧壁12、13上设置第一边缘薄片14、15，在手柄10的末端也设置有第一边缘薄片，参见图7，在手柄10的自由端也设置有第一边缘薄片17，第一边缘薄片17的厚度与手柄10的厚度相等。此外，第一边缘薄片14、15、17的转角处均为圆弧倒角，即不设置棱边。当使用者握持手柄10时，不会按压到棱边而感到不适。可见，在手柄10的周缘设置一圈第一边缘薄片，可以提高手柄10整体的抗弯曲性能。
在勺子的主体部20的周缘设置有第二边缘薄片21，本实施例中，第二边缘薄片21的厚度与主体部20的厚度相等，并且第二边缘薄片21围绕主体部21的周向延伸。同时，第二边缘薄片21的转角处也是设计成圆弧倒角。在主体部20的周缘设置第二边缘薄片21的目的是为了提高主体部20的抗弯曲强度，避免主体部20受力弯曲变形。
优选的，整个勺子的厚度都是相等的，即不管是手柄10、主体部20还是加强筋条30各个部分，厚度都是相等的，这样的设计能够简化勺子的生产工艺，具体的，由于勺子是纸浆模塑热压成型的，因此在使用压模机压制成型时，需要将湿坯放置到下模上，通过控制上模下行的距离来控制成型后的勺子的厚度。为此，在热压成型时，需要控制下模与下模的距离，即可以压制得到厚度均匀的勺子，上模与下模的设计简单，且控制也不复杂。优选的，勺子的厚度可以在0.2毫米至5.0毫米之间，优选的，在0.5毫米至1.0毫米之间。
此外，本实施例将加强筋条30的截面设计成波浪形，并且在手柄10周缘设置第一边缘薄片，在主体部20的周缘设置第二边缘薄片，均可以方便勺子的堆叠，在生产过程中可以方便的实现多个勺子的堆叠定位，从而方便实现自动化的生产，也有利于勺子的运输。勺子使用前，可以方便的将一个勺子从堆叠的多个勺子中分离出来，方便勺子的拿取。
第二实施例：
参见图8至图10，本实施例的环保餐具是使用环保材料制成的餐刀，餐刀包括手柄40以及主体部50，手柄40呈长条状，主体部50位于手柄40的一端。由于主体部50与手柄40连接处是最容易发生弯折的地方，为了加强主体部50与手柄40连接处的硬度，本实施例在手柄40与主体部50之间设置加强筋条60。
加强筋60大致呈长条状，从手柄40延伸至主体部50，参见图11，加强筋条60从餐刀的上表面向下表面方向凹陷，并且，在加强筋条60延伸方向的截面上，加强筋条60包括凹陷部63以及位于凹陷部63两端的凸起部64、65。
凹陷部63的底壁并不是平面，具体的，凹陷部63具有两个相邻的表面，两个表面之间形成的夹角为一个钝角，优选的，该夹角在110°至140°之间，更优选的，该夹角在120°至130°之间。并且，凹陷部33的两端分别设置有侧壁61、62，侧壁61与凹陷部33之间形成凸起部64；侧壁62与凹陷部63之间形成凸起部65。
从图8至图10可见，加强筋条60的截面并不是朝向一个方向凹陷，而是朝向两个方向出现凹凸的形状，即凹陷部63从餐刀的上表面向下表面方向凹陷，而两个凸起部64、65从餐刀的下表面向上表面的方向凸起，这样，加强筋条60的截面成波浪形，在凹陷部63与凸起部64、65处并不会形成从平面到斜面的斜率突变的情况，也就是不会形成棱边，这样，在模塑成型时，在凹陷部63与凸起部64、65处并不容易形成开裂的情况，提高纸浆模塑餐刀的成品率。
此外，通过合理设置凹陷部63与凸起部64、65内侧表面、外侧表面的曲率半径，避免凹陷部63与凸起部64、65内侧表面、外侧表面的曲率半径过小而导致模塑成型时凹陷部63或者凸起部64、65的表面上出现开裂的情况发生。另外，凹陷部63的厚度小于加强筋条60的总厚度。
在侧壁62的自由端连接有边缘薄片67，边缘薄片67的厚度与侧壁62的厚度相等。设置边缘薄片67可以增加加强筋条60的抗弯曲强度，避免加强筋条60受挤压弯曲变形。
为了提高手柄40的强度，本实施例将手柄40设计成一边敞口的中空形状，即在手柄40的延伸方向上，手柄40的截面包括有底壁以及位于底壁两端的侧壁，侧壁的一端与底壁相连，侧壁的另一端为自由端，在侧壁的自由端设置有第一边缘薄片。并且，两个侧壁上的第一边缘薄片位于同一表面上，这样，当使用者握持手柄40时，施加的力分别作用在第一边缘薄片的端部，在两个侧壁受力后向中部靠拢并且发生变形。当施加的力消失后，两个侧壁将发生回弹。此外，两片第一边缘薄片的厚度相等，且第一边缘薄片的厚度与侧壁的厚度也相等。本实施例的手柄40截面形状与第一实施例的手柄的截面形状基本相同，在此不再赘述。
参见图12，在手柄40的自由端也设置有第一边缘薄片42，第一边缘薄片42的厚度与手柄40的厚度相等。可见，手柄40的周缘均设置有第一边缘薄片，且第一边缘薄片的转角处均为圆弧倒角，即不设置棱边。当使用者握持手柄40时，不会按压到棱边而感到不适。
此外，在餐刀的主体部50的一侧设置多个齿51，在主体部50的另一侧设置有第二边缘薄片52。参见图13，在主体部50的端部，设置有第二边缘薄片53，优选的，第二边缘薄片52、53的厚度与主体部50的厚度相等，且第二边缘薄片52、53的转角处也是设计成圆弧倒角。在主体部50设置第二边缘薄片52、53的目的是为了提高主体部50的抗弯曲强度，避免主体部50受力弯曲变形。
本实施例将加强筋条60的截面设计成波浪形，并且在手柄40周缘设置第一边缘薄片，在主体部50设置第二边缘薄片，均可以方便餐刀的堆叠，在生产过程中可以方便的实现多个餐刀的堆叠定位，从而方便实现自动化的生产，也有利于餐刀的运输。餐刀使用前，可以方便的将一个餐刀从堆叠的多个餐刀中分离出来，方便餐刀的拿取。
第三实施例：
参见图14至图16，本实施例的环保餐具是使用环保材料制成的叉子，叉子包括手柄70以及主体部80，手柄70呈长条状，主体部80位于手柄70的一端。由于主体部80与手柄70连接处是最容易发生弯折的地方，为了加强主体部80与手柄70连接处的硬度，本实施例在手柄70与主体部80之间设置加强筋条90。
加强筋90大致呈长条状，从手柄70延伸至主体部80，参见图17，加强筋条90从叉子的上表面向下表面方向凹陷，并且，在加强筋条90延伸方向的截面上，加强筋条90包括凹陷部99以及位于凹陷部99两端的凸起部95、96。
凹陷部99的底壁并不是平面，具体的，凹陷部99具有相邻的第一表面91与第二表面92，第一表面91与第二表面92之间形成的夹角为一个钝角，优选的，该夹角在110°至140°之间，更优选的，该夹角在120°至130°之间。并且，第一表面91的一端连接有侧壁93，第二表面92的一端连接有侧壁94，第一表面91与侧壁93之间形成凸起部95，第二表面92与侧壁94之间形成凸起部96。
从图14至图16可见，加强筋条90的截面并不是朝向一个方向凹陷，而是朝向两个方向出现凹凸的形状，即凹陷部99从叉子的上表面向下表面方向凹陷，而两个凸起部95、96从叉子的下表面向上表面的方向凸起，这样，加强筋条90的截面成波浪形，在凹陷部99与凸起部95、96处并不会形成从平面到斜面的斜率突变的情况，也就是不会形成棱边，这样，在模塑成型时，在凹陷部99与凸起部95、96处并不容易形成开裂的情况，提高纸浆模塑叉子的成品率。
此外，通过合理设置凹陷部99与凸起部95、96内侧表面、外侧表面的曲率半径，避免凹陷部99与凸起部95、96内侧表面、外侧表面的曲率半径过小而导致模塑成型时凹陷部99或者凸起部95、96的表面上出现开裂的情况发生。另外，凹陷部99的厚度小于加强筋条90的总厚度。
在侧壁93的自由端连接有边缘薄片97，边缘薄片97的厚度与侧壁92的厚度相等，在侧壁94的自由端连接有边缘薄片98，边缘薄片98的厚度与侧壁94的厚度相等。设置边缘薄片97、98可以增加加强筋条90的抗弯曲强度，避免加强筋条90受挤压弯曲变形。
为了提高手柄70的强度，本实施例将手柄70设计成一边敞口的中空形状，即在手柄70的延伸方向上，手柄70的截面包括有底壁以及位于底壁两端的侧壁，侧壁的一端与底壁相连，侧壁的另一端为自由端，在侧壁的自由端设置有第一边缘薄片。并且，两个侧壁上的第一边缘薄片位于同一表面上，这样，当使用者握持手柄70时，施加的力分别作用在第一边缘薄片的端部，在两个侧壁受力后向中部靠拢并且发生变形。当施加的力消失后，两个侧壁将发生回弹。此外，两片第一边缘薄片的厚度相等，且第一边缘薄片的厚度与侧壁的厚度也相等。本实施例的手柄70截面形状与第一实施例的手柄的截面形状基本相同，在此不再赘述。
参见图18，在手柄70的自由端也设置有第一边缘薄片71，第一边缘薄片71的厚度与手柄70的厚度相等。可见，手柄70的周缘均设置有第一边缘薄片，且第一边缘薄片的转角处均为圆弧倒角，即不设置棱边。当使用者握持手柄70时，不会按压到棱边而感到不适。
此外，在叉子的主体部80的周缘设置有第二边缘薄片83，并且，在叉子的主体部80设置四个齿81，每一齿81的周缘均设置有第二边缘薄片84，并且，第二边缘薄片83、84的厚度与主体部80的厚度相等，且第二边缘薄片83、84的转角处也是设计成圆弧倒角。可见，在主体部80的周缘均设置第二边缘薄片，在主体部80设置第二边缘薄片83、84的目的是为了提高主体部80的抗弯曲强度，避免主体部80受力弯曲变形。
另外，在中间的两个齿81的中部设置有凹陷的加强部82，加强部82自叉子的上表面向下表面方向凹陷。通过加强部82可以提升齿81的抗弯曲性能，避免叉子使用过程中，齿81出现断裂的情况发生。
本实施例将加强筋条90的截面设计成波浪形，并且在手柄70周缘设置第一边缘薄片，在主体部80的周缘设置第二边缘薄片，均可以方便叉子的堆叠，在生产过程中可以方便的实现多个叉子的堆叠定位，从而方便实现自动化的生产，也有利于叉子的运输。叉子使用前，可以方便的将一个叉子从堆叠的多个叉子中分离出来，方便叉子的拿取。
第四实施例：
参见图19与图20，本实施例的环保餐具是使用环保材料制成的叉子，与第三实施例不同的是，本实施例的叉子设置有三个齿。叉子包括手柄1100以及主体部120，手柄110呈长条状，主体部120位于手柄110的一端。由于主体部120与手柄110连接处是最容易发生弯折的地方，为了加强主体部120与手柄110连接处的硬度，本实施例在手柄10与主体部120之间设置加强筋条130。
加强筋130大致呈长条状，从手柄110延伸至主体部120，参见图21，加强筋条130从叉子的上表面向下表面方向凹陷，并且，在加强筋条130延伸方向的截面上，加强筋条130包括凹陷部131以及位于凹陷部131两端的凸起部134、135。
凹陷部131的底壁并不是平面，具体的，凹陷部131具有相邻的第一表面132与第二表面133，第一表面132与第二表面133之间形成的夹角为一个钝角，优选的，该夹角在110°至140°之间，更优选的，该夹角在120°至130°之间。并且，第一表面132的一端连接有侧壁136，第二表面133的一端连接有侧壁137，第一表面132与侧壁136之间形成凸起部134，第二表面133与侧壁137之间形成凸起部135。
从图19与图20可见，加强筋条130的截面并不是朝向一个方向凹陷，而是朝向两个方向出现凹凸的形状，即凹陷部131从叉子的上表面向下表面方向凹陷，而两个凸起部132、135从叉子的下表面向上表面的方向凸起，这样，加强筋条130的截面成波浪形，在凹陷部131与凸起部132、135处并不会形成从平面到斜面的斜率突变的情况，也就是不会形成棱边，这样，在模塑成型时，在凹陷部131与凸起部132、135处并不容易形成开裂的情况，提高纸浆模塑叉子的成品率。
此外，通过合理设置凹陷部131与凸起部132、135内侧表面、外侧表面的曲率半径，避免凹陷部131与凸起部132、135内侧表面、外侧表面的曲率半径过小而导致模塑成型时凹陷部131或者凸起部132、135的表面上出现开裂的情况发生。另外，凹陷部131的厚度小于加强筋条130的总厚度。
在侧壁136的自由端连接有边缘薄片138，边缘薄片138的厚度与侧壁136的厚度相等，在侧壁137的自由端连接有边缘薄片139，边缘薄片139的厚度与侧壁137的厚度相等。设置边缘薄片138、139可以增加加强筋条130的抗弯曲强度，避免加强筋条130受挤压弯曲变形。
为了提高手柄110的强度，本实施例将手柄110设计成一边敞口的中空形状，即在手柄110的延伸方向上，手柄110的截面包括有底壁以及位于底壁两端的侧壁，侧壁的一端与底壁相连，侧壁的另一端为自由端，在侧壁的自由端设置有第一边缘薄片。并且，两个侧壁上的第一边缘薄片位于同一表面上，这样，当使用者握持手柄110时，施加的力分别作用在第一边缘薄片的端部，在两个侧壁受力后向中部靠拢并且发生变形。当施加的力消失后，两个侧壁将发生回弹。此外，两片第一边缘薄片的厚度相等，且第一边缘薄片的厚度与侧壁的厚度也相等。本实施例的手柄110截面形状与第一实施例的手柄的截面形状基本相同，在此不再赘述。
参见图23与图24，在手柄110的自由端也设置有第一边缘薄片111，第一边缘薄片111的厚度与手柄110的厚度相等。可见，手柄110的周缘均设置有第一边缘薄片，且第一边缘薄片的转角处均为圆弧倒角，即不设置棱边。当使用者握持手柄110时，不会按压到棱边而感到不适。
参见图19与图22，在叉子的主体部120的周缘设置有第二边缘薄片123，并且，在叉子的主体部120设置三个齿121，每一齿121的周缘均设置有第二边缘薄片124，并且，第二边缘薄片123、124的厚度与主体部120的厚度相等，且第二边缘薄片123、124的转角处也是设计成圆弧倒角。可见，在主体部120的周缘均设置第二边缘薄片，在主体部120设置第二边缘薄片123、124的目的是为了提高主体部120的抗弯曲强度，避免主体部120受力弯曲变形。
另外，在三个齿121的中部设置有凹陷的加强部122，加强部122自叉子的上表面向下表面方向凹陷。通过加强部122可以提升齿121的抗弯曲性能，避免叉子使用过程中，齿121出现断裂的情况发生。
本实施例将加强筋条130的截面设计成波浪形，并且在手柄110周缘设置第一边缘薄片，在主体部120的周缘设置第二边缘薄片，均可以方便叉子的堆叠，在生产过程中可以方便的实现多个叉子的堆叠定位，从而方便实现自动化的生产，也有利于叉子的运输。叉子使用前，可以方便的将一个叉子从堆叠的多个叉子中分离出来，方便叉子的拿取。
最后需要强调的是，本发明不限于上述实施方式，如餐刀、叉子、勺子手柄长度、宽度的改变；或者叉子主体部齿的数量的改变；又或者餐刀、叉子、勺子厚度的改变等，这些变化也应该包括在本发明的权利要求的保护范围内。
 工业实用性
本发明的环保餐具可以是餐刀、餐叉、勺子或者叉勺等，并且使用环保材料制成，对环境友好。并且，本发明通过在手柄的两个侧壁自由端设置第一边缘薄片，当使用者握持手柄时，手指将抵压在两个第一边缘薄片上，这样，通过两个第一边缘薄片向侧壁施加力，施加的力以垂直于侧壁的方向加载在侧壁上，避免在侧壁上加载倾斜向上的力，从而改变了加载的力的方向，减少侧壁收到的应力分布不均匀的情况，使得本发明的环保餐具具有良好的抗弯曲性能，使用时不容易折断。

Claims (15)

  1. 环保餐具，包括：
    手柄以及主体部，所述主体部位于所述手柄的一端；
    其特征在于：
    在所述手柄延伸方向的截面上，所述手柄具有底壁以及位于所述底壁两端的侧壁，所述侧壁的自由端设置有第一边缘薄片，所述第一边缘薄片的厚度与所述侧壁的厚度相等，且所述第一边缘薄片的转角处为圆弧倒角。
  2. 根据权利要求1所述的环保餐具，其特征在于：
    两个所述侧壁对应的所述第一边缘薄片在同一平面上。
  3. 根据权利要求2所述的环保餐具，其特征在于：
    所述侧壁与所述第一边缘薄片倾斜设置，且所述侧壁与所述第一边缘薄片之间夹角为钝角。
  4. 根据权利要求1至3任一项所述的环保餐具，其特征在于：
    所述主体部的周缘设置有第二边缘薄片，所述第二边缘薄片的厚度与所述主体部的厚度相等。
  5. 根据权利要求4所述的环保餐具，其特征在于：
    所述环保餐具为叉，所述主体部设置有二个以上的齿，每一所述齿的周缘均设置有所述第二边缘薄片。
  6. 根据权利要求5所述的环保餐具，其特征在于：
    至少一个所述齿的中部设置有凹陷的加强部。
  7. 根据权利要求1至3任一项所述的环保餐具，其特征在于：
    所述环保餐具设置有加强筋条，所述加强筋条自所述手柄延伸至所述主体部，在所述加强筋条延伸方向的截面上，所述加强筋条包括凹陷部以及位于所述凹陷部两端的凸起部。
  8. 根据权利要求7所述的环保餐具，其特征在于：
    所述凹陷部具有两个相邻接的第一表面及第二表面，所述第一表面与所述第二表面之间的夹角为110°至140°之间。
  9. 根据权利要求7所述的环保餐具，其特征在于：
    所述凹陷部外侧表面的曲率半径为2.0毫米至2.5毫米之间。
  10. 根据权利要求7所述的环保餐具，其特征在于：
    所述凸起部外侧表面的曲率半径为2.5毫米至3.0毫米之间。
  11. 根据权利要求7所述的环保餐具，其特征在于：
    所述凸起部内侧表面的曲率半径为1.5毫米至2.0毫米之间。
  12. 根据权利要求7所述的环保餐具，其特征在于：
    在所述加强筋条延伸方向的截面上，所述凹陷部的厚度小于所述加强筋条的厚度。
  13. 根据权利要求12所述的环保餐具，其特征在于：
    所述凹陷部的厚度是所述凸起部最靠近环保餐具上表面的端点处到所述凹陷部最靠近环保餐具下表面端点处的距离。
  14. 根据权利要求12所述的环保餐具，其特征在于：
    所述加强筋条的厚度是所述凸起部最靠近环保餐具上表面的端点处到所述第一边缘薄片最靠近环保餐具下表面之间的距离。
  15. 根据权利要求7所述的环保餐具，其特征在于：
    所述加强筋条为波浪形。
PCT/CN2021/104130 2020-11-30 2021-07-02 环保餐具 WO2022110810A1 (zh)

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