WO2023153239A1 - Razor body and razor - Google Patents

Razor body and razor Download PDF

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Publication number
WO2023153239A1
WO2023153239A1 PCT/JP2023/002609 JP2023002609W WO2023153239A1 WO 2023153239 A1 WO2023153239 A1 WO 2023153239A1 JP 2023002609 W JP2023002609 W JP 2023002609W WO 2023153239 A1 WO2023153239 A1 WO 2023153239A1
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WO
WIPO (PCT)
Prior art keywords
handle
razor
folding line
paper
section
Prior art date
Application number
PCT/JP2023/002609
Other languages
French (fr)
Japanese (ja)
Inventor
善行 横田
仁 山室
Original Assignee
大王製紙株式会社
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 大王製紙株式会社 filed Critical 大王製紙株式会社
Publication of WO2023153239A1 publication Critical patent/WO2023153239A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/02—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving unchangeable blades
    • B26B21/06—Safety razors with fixed blade, e.g. with moulded-in blade
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/52—Handles, e.g. tiltable, flexible

Definitions

  • the present invention relates to a razor handle and a razor.
  • the razor has a head portion to which a cartridge containing a metal blade is attached to a resin case, and a handle united with a handle portion for the user to grip and operate. Moldings are well known. Handles are usually made of hard plastic or metal, and many of them have structures that are difficult to fold or disassemble, requiring a large volume for storage, and it is necessary to secure storage space for storage. , there was a problem that it is inconvenient to carry.
  • Patent Document 1 proposes a razor formed by folding and assembling a thin sheet with a handle made of paper.
  • the handle of this razor is made of paper, which reduces the amount of plastic used as a whole.
  • the razor can be transported and stored in the form of a sheet, which improves the storability and portability. For example, it can be delivered to stores or lodging facilities in the form of a sheet, stored in the backyard in the form of a sheet, or assembled and used when necessary.
  • the cartridge (razor head) is urged against the user's skin by the bending of the handle. remains to change.
  • the razor of Patent Document 1 requires multiple folding steps to form the handle part of the handle, especially for gripping, and further simplification of assembly is required.
  • the first means to solve the above problem is A handle for a razor, Assembled from a single sheet material, a handle to be gripped by a user; a head to which the cartridge is attached;
  • the head part a mounting portion having a mounting surface for mounting a blade or a cartridge containing a blade, connected to the tip side of the handle portion via a first folding line, and capable of swinging about the first folding line;
  • the back plate portion is connected to the mounting portion via a second folding line arranged parallel to the first folding line, is folded back at the second folding line, and is positioned closer to the rear end of the handle portion than the mounting portion.
  • a handle for a razor characterized by:
  • the second means is The tongue portion sandwiches the back plate portion with the handle portion, A razor handle according to the first means, wherein a sliding piece is provided at the tip of the back plate portion to contact the handle portion, and the sliding piece slides on the handle portion in accordance with the movement of the mounting portion.
  • a third way is The back plate is A tip portion surrounded by a slit convex toward the second folding line and a pair of third folding lines connected to the ends of the slit and parallel to the second folding line is folded back at the third folding line.
  • the portion surrounded by the convex slit has a receiving portion formed by inverting the portion, and the tongue portion rides on and presses the receiving portion.
  • a fourth means is The razor handle according to any one of the above first to third means, wherein the sheet material is paper made from pulp fibers, and the paper is multi-layered paper in which a plurality of paper layers are laminated.
  • a fifth means is On the mounting surface of the razor handle according to the first to fourth means, A razor in which the blade or cartridge containing the blade is mounted with the cutting edge facing the first fold line.
  • a razor handle and a razor which can be easily assembled from a single sheet shape and which has an oscillating mechanism that allows the blade and cartridge to follow a curved surface.
  • Fig. 2 is a rear perspective view of the razor handle of the first embodiment; Fig. 2 is an exploded view of the razor handle of the first embodiment; Fig. 2 is a rear view of the razor handle of the first embodiment; Fig. 2 is a side view of the razor handle of the first embodiment; 1 is a front perspective view of the razor handle of the first embodiment; FIG. 1 is a front view of a razor handle of a first embodiment; FIG. Fig. 4 is a rear perspective view of the razor handle of the second embodiment; Fig. 10 is an expanded view of the razor handle of the second embodiment; Fig. 10 is a rear view of the razor handle of the second embodiment; Fig. 10 is a side view of the razor handle of the second embodiment; Fig. 3 is a front perspective view of a razor handle of a second embodiment; Fig. 4 is a front view of the razor handle of the second embodiment; It is a figure which shows the cross section of the multilayer paper of this embodiment.
  • FIG. 1 the invention is not limited to the illustrated shape or this embodiment.
  • the detailed shape and position of each part can be changed as long as the effects of the present invention are not hindered.
  • the terms “front”, “back”, “top”, “bottom”, “left” and “right” in the present invention and this specification change depending on the position of the viewer, and are not absolute positions. not a denoting word.
  • the "front” and “back” need not correspond to the front and back when in use.
  • terms such as “first” and “second” do not necessarily indicate the order of operations.
  • FIG. 1 A razor handle of the first embodiment will be described with reference to FIGS. 1 to 6.
  • FIG. 1 the handle 1 has a handle portion 10 to be gripped by a user and a head portion 30 to which a cartridge is attached. , assembled from a single sheet of material.
  • the head portion 30 of the razor handle 1 includes a mounting portion 31 connected to the distal end side of the handle portion 10 via a first folding line 41, and a second folding portion arranged parallel to the first folding line 41. and a back plate portion 32 connected to the mounting portion 31 via a line 42 .
  • the handle part 10 has an elongated shape at the rear end and a fan shape whose width gradually widens at the front end.
  • the mounting portion 31 is formed to stand up from the handle portion 10 by bending the linear first folding line 41, and is connected so as to be able to swing around the first folding line 41 as an axis. That is, the mounting portion 31 and the handle portion 10 are connected so that the angle between them can be changed.
  • the mounting portion 31 has a mounting surface 31A for mounting a blade or a cartridge containing the blade, and this mounting surface is formed on the side opposite to the rear end direction of the handle portion. Therefore, when the blade and the cartridge are attached to the attachment surface, when the attachment portion 31 swings about the first folding line 41, the blade and the cartridge move accordingly.
  • the razor handle 1 has a tongue portion 50 which is cut and raised from the handle portion 10 with the mounting portion 31 side as a leading end, and this cut and raise produces plate spring elasticity.
  • the elasticity of the plate spring of the tongue portion 50 is adjusted mainly by the rigidity of the sheet material and the elastic deformability such as stiffness, and also by the width and length of the tongue portion 50 and the overall shape of the handle portion 10 .
  • the back plate portion 32 is folded back at the second folding line 42 and positioned closer to the rear end side of the handle portion 10 than the mounting portion 31. It is inserted between 50 and the handle portion 10 , and the tongue portion 50 presses and holds the back plate portion 32 .
  • the tongue portion 50 not only pushes the back plate portion 32 but also is configured to sandwich the back plate portion 32 with the handle portion 10 .
  • an elastic biasing force is applied to the back plate portion 32, so that the back plate portion 32 is clamped more strongly.
  • the mounting portion 31 can swing around the first folding line 41, and the second folding line 42 is positioned parallel to the first folding line 41. Therefore, when the attachment portion 31 moves toward the rear end direction of the handle portion 10 about the first fold line 41 , the second fold line 42 moves toward the rear end side of the handle portion 10 . As a result, the back plate portion 32 is inserted closer to the base end portion 51 side of the tongue piece portion 50 . Further, when the mounting portion 31 moves toward the rear end of the handle portion 10 about the first folding line 41, the mounting portion 31 becomes more upright with respect to the handle portion 10. As shown in FIG.
  • the back plate portion 32 is not only inserted toward the base end portion 51 of the tongue portion 50 but also tries to push up the tongue portion 50 . That is, since the tongue portion 50 is further cut and raised, an elastic force that pushes back the back plate portion 32 is generated and increased. As described above, in this embodiment, an elastic force is generated against the pressing of the tongue portion 50 of the back plate portion 32 toward the base end portion 51 as the mounting portion 31 swings.
  • the handle portion bending line 11 is provided from the rear end side to the tip side at the center portion in the width direction of the surface of the handle portion 10 opposite to the cut-and-raise direction.
  • the handle portion 10 is bent in the width direction, that is, in a direction perpendicular to the cut-and-raised direction of the tongue portion 50, and is bent into a substantially V shape so that the cut-and-raised side becomes the valley side.
  • a handle portion 10 is provided.
  • the bending of the handle portion 10 makes the function and cut-and-raise of the tongue piece portion 50 suitable. That is, when the handle portion 10 is bent into a V shape, the base end portion 51 of the tongue portion 50 is narrowed. As a result, the tip side of the tongue portion 50 can be lifted from the handle portion 10 . At this time, it is desirable that the handle portion 10 is bent like the handle portion 10 because the handle portion 10 can be lifted toward the valley side. Furthermore, if the handle portion bending line 11 extends to the base end portion 51 of the tongue portion 50 as in the illustrated embodiment, the base end portion 51 of the tongue portion 50 is also bent so as to be slightly curved. At the portion 51, it becomes difficult for the portion 51 to break due to plastic deformation, which makes it impossible to function as a spring, and it becomes easy to generate an elastic biasing force.
  • a sliding piece 33 is particularly provided at the tip of the back plate portion 32 to be in contact with the handle portion 10 , and the sliding piece 33 moves toward the handle according to the movement of the mounting portion 31 . It is configured to slide on the portion 10 .
  • the sliding pieces 33 are provided as a pair so as to be in contact with both end positions remaining when the tongue portion 50 is cut and raised, that is, positions sandwiching the tongue portion 50 .
  • the friction between the back plate portion 32 and the handle portion 10 is adjusted, and the tongue portion 50 is adjusted to the desired elastic biasing force against the back plate portion 32. easier.
  • the size of the handle of this embodiment is not limited because it can be the size of a general razor. However, it is preferable to set the width L3 to 35 to 49 mm and the width L3 to 15 to 20 mm. With this size, it is the size of a general razor, and a high-strength razor handle can be constructed from the sheet material.
  • the handle 1 of this second embodiment has a slit in which the back plate portion 32 is convex toward the second folding line 42 and this It has a leading end portion 32E surrounded by a pair of third folding lines 43 parallel to the second folding lines 42 and a leading edge, which are connected to the ends of the slit 32S.
  • the tip portion is folded back in the direction toward the handle portion, and is folded to the portion between the second folding line 42 and the third folding line 43 .
  • the portion surrounded by the convex slit 32S is reversed, and a plate-shaped depression is formed at the folding edge of the back plate portion 32.
  • the shape of the slit is a curved semi-elliptical shape, but the specific shape of the slit is not limited.
  • the formation position of the convex slit 32S is in the extension line direction of the tip of the tongue portion 50, and the recess is formed at the position where the tongue portion 50 rests.
  • the dish-shaped recess of the back plate portion 32 is inserted between the tongue portion 50 and the handle portion 10 .
  • this depression serves as the receiving portion 34 for receiving the tongue portion 50 .
  • the back plate portion 32 is pressed in such a manner that the tongue portion 50 rides on the receiving portion 34 .
  • the receiving portion 34 has a wall corresponding to the thickness of the back plate portion 32 on the side of the second folding line 42 , the back plate portion 32 has a tip of the tongue portion 50 that rests on the receiving portion 34 . , and the movement is restricted at the position where it abuts against the wall portion 35 . Therefore, the attachment portion 31 is prevented from falling excessively toward the rear end side of the handle portion 10 .
  • the mounting portion 31 is configured to be able to swing around the first folding line 41, and further, when the second folding line 42 side is pushed toward the handle portion 10, Since the plate portion 32 is elastically biased by the tongue portion 50 to generate a repulsive force, the mounting surface 31A moves elastically with respect to the object, thus providing a so-called swinging mechanism. ing. Therefore, when a blade or a cartridge containing the blade is attached to the attachment surface of the handle with the blade edge facing the first folding line, the razor is provided with the swing mechanism.
  • the method of attaching the blade and the cartridge to the attachment surface is not limited.
  • the razor can be fixed by an appropriate fixing means such as an adhesive, an adhesive tape, caulking or eyelets.
  • an appropriate fixing means such as an adhesive, an adhesive tape, caulking or eyelets.
  • the blade and cartridge are not limited. A commercially available replaceable blade cartridge may be used, or one formed by fixing a blade to a paper frame may be used.
  • each folding line in the handle of the present embodiment is a line for facilitating folding and folding of the sheet material, and may be a simple printed line for positioning. , Preferably, it is a ruled line, a perforation, or a half slit, which is also called a crease. A half-slit is desirable for ease of folding.
  • all lines do not need to be of the same type. It can be appropriately arranged in consideration of the required strength and the stress required for bending. Also, it is not necessary to make the cut-tie ratio for perforations and the slit depth for half-slits the same.
  • the sheet material of the present embodiment is desirably paper made from pulp fibers from the viewpoint of eliminating plastics as described above.
  • corrugated cardboard, coated cardboard, and multi-layer paper in which a plurality of paper layers are laminated can be exemplified.
  • the paper is composed only of fibers derived from natural materials and does not contain synthetic fibers including plastics.
  • the paper is made of pulp fibers only.
  • particularly preferred papers are multilayer papers having three or more paper layers. As shown in FIG.
  • the multi-layer paper 90 has a plurality of paper layers 91 and 92 laminated, so that the characteristics of each layer can be changed, and the paper can be easily folded while having strength. For example, by combining a pair of surface layers 91, which are hard but tend to break easily although they are excellent in water resistance and wear resistance, with a flexible middle layer 92, they become excellent in toughness and durability, and can be bent or assembled while having strength. can be made easier. In addition, when each folding line is formed into a half slit, a plurality of layers including the surface layer can be prevented from being completely cut, and the risk of breakage at each folding line can be greatly reduced and flexibility can be provided. .
  • the multi-layered paper 90 can be manufactured by multi-layered paper.
  • the multi-layered paper 90 may be commercially available, for example, Ellipra paper manufactured by Dainichi Paper Co., Ltd., and the like. From this point, it is particularly preferable that the pattern body of the present embodiment is made of multi-layered paper and the folding line is a half slit.
  • the basis weight of the paper is preferably 700 g/m 2 or more, more preferably 750 g/m 2 or more, and particularly preferably 800 g/m 2 or more. With paper having this basis weight, it is easy to assemble by folding each part, and it is easy to obtain sufficient rigidity and strength.
  • the upper limit of the basis weight is not limited, there is a possibility that creases may easily occur with a calender roll or the like during papermaking. From this point, the upper limit is preferably 1400 g/m 2 , more preferably 1240 g/m 2 . .
  • the thickness of the paper is preferably 900 ⁇ m or more and 1,400 ⁇ m or less, more preferably 950 ⁇ m or more and 1,350 ⁇ m or less.
  • the basis weight is a value measured in accordance with "Paper and paperboard - Basis weight measurement method" described in JIS P 8124 (2011), and the paper thickness is a value described in JIS-P8118 (2014) "Paper and paperboard - test methods for thickness and density”.
  • the "bending strength" of the paper based on JIS K 7171 is 39 to 45 MPa. Particularly desirable is 40 to 42.5 MPa. Within this range, the elastic biasing force of the tongue portion and the back plate portion can be suitably exerted, the mounting surface can easily follow the curved surface of the skin, and excessive surface pressure can be prevented. Furthermore, the "flexural modulus" based on JIS K 7171 is desirably 6500 MPa to 7500 Pa. Within this range, the elastic biasing force of the tongue portion and the back plate portion can be suitably exerted, the mounting surface can easily follow the curved surface of the skin, and excessive surface pressure can be prevented. "Bending strength" and “flexural modulus” are measured at a test speed of 2 mm/min and a distance between fulcrums of 64 m, and the measured value is the average value of five measurements.
  • the constituent pulp fibers of the paper are not necessarily limited, but preferred constituent pulp fibers are unbleached softwood kraft pulp (NUKP), semi-bleached softwood kraft pulp (NSBKP), and bleached softwood kraft pulp ( NBKP), and hardwood kraft pulp such as unbleached hardwood kraft pulp (LUKP), semi-bleached hardwood kraft pulp (LSBKP), and bleached hardwood kraft pulp (LBKP).
  • NUKP unbleached softwood kraft pulp
  • NBSKP semi-bleached softwood kraft pulp
  • NBKP bleached softwood kraft pulp
  • hardwood kraft pulp such as unbleached hardwood kraft pulp (LUKP), semi-bleached hardwood kraft pulp (LSBKP), and bleached hardwood kraft pulp (LBKP).
  • Other pulps include chemical pulps such as waste paper pulp, hardwood sulfite pulp and softwood sulfite pulp, or various known pulps such as pulp chemically or mechanically produced from non
  • the content of softwood kraft pulp and hardwood kraft pulp is desirably 90 to 100% by mass because it facilitates development of strength.
  • the mixing ratio of softwood kraft pulp and hardwood kraft pulp is preferably 5:95 to 30:70.
  • bleached softwood kraft pulp and bleached hardwood kraft pulp which are white pulps with a high degree of whiteness.
  • the sheet material is paper
  • the paper must have a longitudinal tensile strength of 70 kN/m or more and a transverse tensile strength of 40 kN/m or more, measured according to JIS P 8113 (2006). is desirable. If it has this tensile strength, it is suitable for folding and assembly.
  • the sheet material is paper
  • the paper when the sheet material is paper, the paper must have a Taber stiffness of 150 mN ⁇ m or more in the longitudinal direction and 70 mN ⁇ m or more in the lateral direction measured in accordance with JIS P 8125 (2000). is desirable. Within this range, it is easy to fold and assemble.
  • the sheet material is paper
  • the paper is tested according to JAPAN TAPPI Paper Pulp Test Method No. 18-1:2000, the Z-axis strength is 400 kN/m 2 or more, preferably 450 kN/m 2 or more. It is easy to manufacture the handle in the developed state by punching such as Thomson processing and cutting with a cutting plotter.
  • the paper When the sheet material is paper, the paper preferably has a static friction coefficient of 0.25 to 0.65 according to the JIS P 8147 ISO horizontal method. In particular, the friction between the tongue portion and the back plate portion becomes smooth. In this measuring method, it is preferable that the measurement is performed three times for each of the back surfaces and the front surfaces of the sheet material, and the third measurement values for the back surfaces and the front surfaces are all within the above range. In the ISO horizontal method, at least one of the static friction coefficient of the first sliding, the static friction coefficient of the third sliding, or the dynamic friction coefficient of the third sliding should be measured, and the third static friction coefficient is smaller than the first static friction coefficient. The third static friction coefficient has a smaller variation.
  • the PPS Parker Print Surf Roughness conforming to JIS P 8151 is preferably 3 to 8 ⁇ m, more preferably 4 to 7 ⁇ m, on both the front and back surfaces. The friction between the tongue piece and the back plate becomes smooth.
  • the paper When the sheet material is paper, the paper preferably has an MMD value of 10 to 25 on both the front and back surfaces.
  • the friction between the tongue piece and the back plate becomes smooth.
  • the MMD is measured using a friction tester (KES-SE, manufactured by Kato Tech Co., Ltd.) or its equivalent.
  • KS-SE manufactured by Kato Tech Co., Ltd.
  • As the friction element a contact surface having a length and a width of 10 mm is used, which is formed by adjoining 20 standard piano wires having a diameter of 0.5 mm.
  • the number of layers is not limited, but is 5 to 9 layers, and the number of layers of the middle layer 92 is 3 layers or more, especially 5 layers.
  • the embodiment shown in FIG. 14 has three middle layers 92 . It is said that when the total number of middle layers 92 is three or more, the toughness and durability of the multi-layered paper 90 are likely to be exhibited.
  • the upper limit of the total number of intermediate layers 92 is preferably seven or less from the viewpoint of maintaining interlayer strength. In addition, three to seven layers are easy to operate while maintaining interlaminar strength in the case of using a cylinder multi-cylinder type combined paper machine.
  • the basis weight of the surface layer 91 and the middle layer 92 can be adjusted within the range of the overall basis weight when the sheet material is paper, and is not particularly limited.
  • the basis weight of the surface layer 91 is 60.0 g/m 2 or more and 150.0 g/m 2 or less, particularly 100 to 145 g/m 2 per layer.
  • the basis weight of the entire middle layer 92 is preferably 490 g/m 2 or more and 750 g/m 2 or less, particularly 600 g/m 2 or more and 740 g/m 2 or less.
  • the multilayer paper 90 preferably has a ratio of the total basis weight of the pair of surface layers 91 and 91 to the total basis weight of the multilayer paper 90 in the range of 15.0% to 33.0%.
  • the rigidity of the pair of surface layers 91 is high, and the softness of the middle layer 92 is excellent. Therefore, it is easy to bend at the folding line position, and it is difficult to bend at a position other than the folding line, and it is easy to obtain a handle that is excellent in strength and easy to assemble.
  • the blend of pulp fibers in each layer of multi-layered paper 90 is such that the mass ratio (%) of softwood kraft pulp and hardwood kraft pulp in surface layer 91 is 0/100 or more and 15/85 or less. It is preferable to have In addition to the surface layer 91 of this composition, the middle layer 92 preferably has a mass ratio (%) of softwood kraft pulp and hardwood kraft pulp of 15/85 or more and 35/65 or less. It contains a lot of hardwood kraft pulp that is rigid and easily densified, and the surface layer has high density and rigidity, and the middle layer contains a lot of softwood kraft pulp, which is more flexible than the surface layer. The handle tends to have a strength that does not easily decrease even if it is bent at a point or repeatedly bent.
  • the multilayer paper 90 when the sheet material is the multilayer paper 90, it is desirable that the multilayer paper 90 is added with at least one of a sizing agent and a paper strength agent as a papermaking additive. Easy to adjust to desired intensity.
  • the multi-layered paper 90 can contain various other additives within a range that does not impair the intended effects of the present invention. For example, polyvinyl alcohol, wax, or the like can be applied.
  • Styrene sizing agents alkyl ketene dimers (AKD), alkenyl succinic anhydrides (ASA), neutral rosin sizing agents, rosin sizing agents, modified rosin emulsion sizing agents, and the like can be used as sizing agents.
  • rosin sizing agents and modified rosin emulsion sizing agents are preferred.
  • the rosin sizing agent is not particularly limited.
  • Rosin-based substances include, for example, rosins such as gum rosin, wood rosin, and tall oil rosin modified with ⁇ , ⁇ -unsaturated carboxylic acids such as fumaric acid, maleic acid, and acrylic acid, or their anhydrides; Rosin esters obtained by reacting polyhydric alcohols such as glycerin, trimethylolethane, trimethylolpropane, pentaerythritol and diglycerin can be mentioned.
  • the rosin sizing agent also includes those obtained by emulsifying these alone or a mixture thereof, and those obtained by emulsifying them alone and then mixing them. Furthermore, emulsified products to which various polymers are added in order to further improve size development are also included.
  • amphoteric paper strength agents are preferably used.
  • amphoteric polyacrylamides include copolymers of acrylamide with anionic monomers and cationic monomers, Mannich-modified copolymers of acrylamide with anionic monomers, Hoffmann decomposition products, and the like.
  • amphoteric polyacrylamide since amphoteric polyacrylamide has a self-fixing function, even if it is added to improve inter-paper strength, it does not become excessively cationic. can be established in
  • the amount of sizing agent added is preferably 0.5 kg/t or more and 5.0 kg/t or less in solid content.
  • the amount of the paper strength agent to be added is preferably 12 kg/t or more and 30 kg/t or less in terms of solid content.
  • “kg/t” shows the mass (kg) per 1t of pulp.
  • the multilayer paper 90 preferably has at least one of the above-mentioned sizing agents and paper strength agents added to each layer of the surface layer 91 and the middle layer 92 as a papermaking additive.
  • the amount of the sizing agent added to the surface layer 91 is preferably 0.5 kg/t or more and 5.0 kg/t or less in solid content.
  • the amount of the sizing agent added to the middle layer 92 is preferably 2.0 kg/t or more and 5.0 kg/t or less in solid content.
  • the amount of the paper strength enhancer added to each layer is preferably 12 kg/t or more and 30 kg/t or less in terms of solid content. Within this range, various paper strengths such as interlaminar strength of multilayer paper suitable for hangers can be easily obtained.
  • the pattern according to the present embodiment preferably contains a siloxane compound.
  • a siloxane compound When a siloxane compound is contained, the rigidity, strength, and water resistance are enhanced by siloxane bonds.
  • the siloxane compound is not necessarily limited as long as it has a siloxane bond, but since the handle 1 constitutes a razor that comes into contact with the human body, it preferably has no or low toxicity to the living body.
  • the siloxane compound includes an appropriate alkoxysilane solution and an alkoxysilane solution processed product for the sheet material before assembly and the sheet material as a material, in addition to the mode of coating the siloxane compound on the hanger after assembly. After infiltration, it may be added by warming or heating. This is desirable because the siloxane compound is bound to the pulp fibers themselves or is contained in such a manner as to coat the pulp fibers.
  • the handle according to the present embodiment does not excessively change the coefficient of friction, surface roughness, and foldability, and does not interfere with the function of the handle and the effects of the present invention.
  • An agent may be applied or impregnated.

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Abstract

[Problem] To provide a razor body that is made of paper and has a pivoting mechanism. [Solution] The aforementioned problem is solved by means of a razor body having a handle section, an attachment section that has an attachment surface for attaching a blade or a cartridge accommodating a blade, is connected to the front end of the handle section with a first crease therebetween, and can swing back and forth using the first crease as an axis, and a back panel section that is connected to the attachment part with a second crease parallel to the first crease therebetween, and is folded back into a v over the second crease to be positioned closer to the back end of the handle section relative to the attachment section, wherein: there is a tongue piece section that is cut in the handle section, using the attachment section-side as the top end, and due to being partially cut out, creates flat spring elasticity; the back panel section is folded back over the second crease and is inserted between the cut-out tongue piece section and the handle section; and the tongue piece section clamps the back panel section against the handle section, and creates elastic energy with respect to the pressing of the back panel section against the base end-side of the tongue piece section, said pressing accompanying the swinging of the attachment section.

Description

剃刀用の柄体及び剃刀Razor handles and razors
　本発明は、剃刀用の柄体及び剃刀に関する。 The present invention relates to a razor handle and a razor.
　剃刀は、樹脂製のケースに金属製の刃が収容されたカートリッジを取り付けるヘッド部と、使用者が把持や操作するためのハンドル部が一体となっている柄体を有し、全体としてＴ字型をなすものがよく知られている。柄体は、通常は、硬質プラスチックや金属などによって形成されており、折り畳みや分解が難しい構造のものが多く、収容に大きな容積を必要とし、保管のための収容スペースを確保する必要があったり、持ち運びに不便であったりするという問題があった。 The razor has a head portion to which a cartridge containing a metal blade is attached to a resin case, and a handle united with a handle portion for the user to grip and operate. Moldings are well known. Handles are usually made of hard plastic or metal, and many of them have structures that are difficult to fold or disassemble, requiring a large volume for storage, and it is necessary to secure storage space for storage. , there was a problem that it is inconvenient to carry.
　また、旅館やホテル等の宿泊施設等では、アメニティとして柄体をプラスチックで形成した、使い捨ての剃刀が提供されていることがあるが、近年では、マイクロプラスチックによる海洋汚染等の問題が注目され、環境保護の点等から脱プラスチック化が世界的に進んでいる。日本においては、「プラスチックに係る資源循環の促進等に関する法律」が成立し、例えば、ホテル業等の特定の事業者に対して、使い捨てプラスチック製品の削減が義務化されることとなった。そして、この「プラスチックに係る資源循環の促進等に関する法律」では、「特定プラスチック使用製品」として、プラスチック製の剃刀が指定されており、剃刀における脱プラスチック化が注目されている。 In addition, accommodation facilities such as inns and hotels sometimes provide disposable razors with plastic handles as amenities, but in recent years, problems such as marine pollution caused by microplastics have been attracting attention. From the point of view of environmental protection, etc., the elimination of plastics is progressing worldwide. In Japan, the Law Concerning Promotion of Resource Recycling Related to Plastics was enacted, and for example, specific business operators such as hotels are obliged to reduce single-use plastic products. The Law Concerning Promotion, etc. of Resource Recycling Concerning Plastics designates plastic razors as ``products using specified plastics,'' and a shift away from plastic in razors is attracting attention.
　柄体を紙製として、薄いシート形状から折り曲げ組み立てて形成される剃刀が、例えば、下記特許文献１に提案されている。この剃刀は、柄体が紙製となっており、全体としてプラスチック使用量料が少なく、また、シート型のまま輸送や保管することができるため、収納性や運搬性も改善されている。例えば、店舗等や宿泊施設にシート状のまま納品したり、シート状のままバックヤードに保管したり、必要時に組み立てて使用する使用態様を採ることができる。 Patent Document 1 below, for example, proposes a razor formed by folding and assembling a thin sheet with a handle made of paper. The handle of this razor is made of paper, which reduces the amount of plastic used as a whole. Moreover, the razor can be transported and stored in the form of a sheet, which improves the storability and portability. For example, it can be delivered to stores or lodging facilities in the form of a sheet, stored in the backyard in the form of a sheet, or assembled and used when necessary.
特許第６８４５８４７８号Patent No. 68458478
　しかしながら、柄体がプラスチックや金属製の剃刀においては、首振りヘッド、首振り機構等とも称される、柄体に取り付けたカートリッジが、肌の曲面に追従して動く機構を備えるものがあり、ユーザーに広く受け入れられているが、薄いシート形状から折り曲げ組み立てて形成される剃刀においては、このような首振り機構を有するものがない。 However, some razors with plastic or metal handles are equipped with a mechanism in which a cartridge attached to the handle moves along the curved surface of the skin. Although widely accepted by users, no razor that is formed by folding and assembling a thin sheet has such a swinging mechanism.
　引用文献１の剃刀では、柄体の撓りによって、カートリッジ（剃刀ヘッド）がユーザーの肌に付勢されるようになっているが、カートリッジ自体が動くわけではなく、カートリッジと肌との面圧が変化するに留まっている。 In the razor of Cited Document 1, the cartridge (razor head) is urged against the user's skin by the bending of the handle. remains to change.
　さらに、特許文献１の剃刀は、柄体のうち、特に把手するためのハンドル部を形成するために、複数回の折り工程が必用となっており、さらなる組み立ての簡易さが求められる。 In addition, the razor of Patent Document 1 requires multiple folding steps to form the handle part of the handle, especially for gripping, and further simplification of assembly is required.
　そこで、本発明の主たる課題は、一枚のシート形状から簡易に組み立てることができ、しかも、刃やカートリッジが曲面に追従できる首振り機構を有する剃刀用の柄体及び剃刀を提供することにある。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a razor handle and a razor that can be easily assembled from a single sheet and that has an oscillating mechanism that allows the blade and cartridge to follow curved surfaces. .
　上記課題を解決した第一の手段は、
　剃刀用の柄体であって、
　一枚のシート材から組み立てられ、
　利用者に把持されるハンドル部と、
　カートリッジが取り付けられるヘッド部と、を有し、
　ヘッド部は、
　刃又は刃が収納されたカートリッジを取り付けるための取付面を有し、第一折り線を介してハンドル部の先端側に連接され、その第一折り線を軸として揺動可能な取付部と、
　第一折り線と平行に配された第二折り線を介して取付部に連接し、前記第二折り線で折り返されて取付部よりもハンドル部の後端側に位置している背板部と、を有し、
　取付部側を先端としてハンドル部から切り起こされ、この切り起こしによって板バネ弾性を生ずる舌片部を有し、
　第二折り線で折り返された背板部が、切り起こされた舌片部とハンドル部との間に差し込まれており、
　前記舌片部が、背板部を押持するとともに、取付部の揺動にともなう背板部の舌片部の基端側への押し込みに対して弾性付勢を生ずる、
　ことを特徴とする、剃刀用の柄体である。 The first means to solve the above problem is
A handle for a razor,
Assembled from a single sheet material,
a handle to be gripped by a user;
a head to which the cartridge is attached;
The head part
a mounting portion having a mounting surface for mounting a blade or a cartridge containing a blade, connected to the tip side of the handle portion via a first folding line, and capable of swinging about the first folding line;
The back plate portion is connected to the mounting portion via a second folding line arranged parallel to the first folding line, is folded back at the second folding line, and is positioned closer to the rear end of the handle portion than the mounting portion. and
having a tongue portion that is cut and raised from the handle portion with the mounting portion side as a leading end, and that has a tongue portion that produces plate spring elasticity by the cut and raised portion;
The back plate portion folded back along the second folding line is inserted between the cut-and-raised tongue portion and the handle portion,
The tongue portion presses the back plate portion and generates an elastic bias against the tongue portion of the back plate portion being pushed toward the base end side due to the rocking motion of the mounting portion.
A handle for a razor characterized by:
　第二の手段は、
　舌片部が、背板部をハンドル部とで挟持しており、
　背板部の先端にハンドル部に接する摺動片が設けられ、取付部の動きに応じて、摺動片がハンドル部上を摺動する、上記第一の手段に係る剃刀用の柄体である。 The second means is
The tongue portion sandwiches the back plate portion with the handle portion,
A razor handle according to the first means, wherein a sliding piece is provided at the tip of the back plate portion to contact the handle portion, and the sliding piece slides on the handle portion in accordance with the movement of the mounting portion. be.
　第三の手段は、
　背板部は、
　第二折り線に向かって凸型のスリットと、このスリットの端に連接し、第二折り線に平行な一対の第三折り線とで囲まれる先端部分が、前記第三折り線で折り返されて、
　前記凸型スリットで囲まれる部分が反転されて形成される受け部を有し、この受け部に舌片部が乗って押持している、
　上記第一の手段に係る剃刀用の柄体である。 A third way is
The back plate is
A tip portion surrounded by a slit convex toward the second folding line and a pair of third folding lines connected to the ends of the slit and parallel to the second folding line is folded back at the third folding line. hand,
The portion surrounded by the convex slit has a receiving portion formed by inverting the portion, and the tongue portion rides on and presses the receiving portion.
A razor handle according to the first means.
　第四の手段は、
　シート材が、パルプ繊維を抄紙した紙であり、その紙が、複数の紙層が積層されている多層紙である、上記第一～第三の手段に係る剃刀用の柄体である。 A fourth means is
The razor handle according to any one of the above first to third means, wherein the sheet material is paper made from pulp fibers, and the paper is multi-layered paper in which a plurality of paper layers are laminated.
　第五の手段は、
　上記第一～第四の手段に係る剃刀用の柄体の取付面に、
　刃又は刃が収納されたカートリッジが、刃先を第一折り線に向く方向で取り付けられている、剃刀である。 A fifth means is
On the mounting surface of the razor handle according to the first to fourth means,
A razor in which the blade or cartridge containing the blade is mounted with the cutting edge facing the first fold line.
　本発明によれば、一枚のシート形状から簡易に組み立てることができ、しかも、刃やカートリッジが曲面に追従できる首振り機構を有する剃刀用の柄体及び剃刀が提供される。 According to the present invention, a razor handle and a razor are provided which can be easily assembled from a single sheet shape and which has an oscillating mechanism that allows the blade and cartridge to follow a curved surface.
第一実施形態の剃刀用柄体の後方斜視図である。Fig. 2 is a rear perspective view of the razor handle of the first embodiment; 第一実施形態の剃刀用柄体の展開図である。Fig. 2 is an exploded view of the razor handle of the first embodiment; 第一実施形態の剃刀用柄体の背面図である。Fig. 2 is a rear view of the razor handle of the first embodiment; 第一実施形態の剃刀用柄体の側面図である。Fig. 2 is a side view of the razor handle of the first embodiment; 第一実施形態の剃刀用柄体の前方斜視図である。1 is a front perspective view of the razor handle of the first embodiment; FIG. 第一実施形態の剃刀用柄体の正面図である。1 is a front view of a razor handle of a first embodiment; FIG. 第二実施形態の剃刀用柄体の後方斜視図である。Fig. 4 is a rear perspective view of the razor handle of the second embodiment; 第二実施形態の剃刀用柄体の展開図である。Fig. 10 is an expanded view of the razor handle of the second embodiment; 第二実施形態の剃刀用柄体の背面図である。Fig. 10 is a rear view of the razor handle of the second embodiment; 第二実施形態の剃刀用柄体の側面図である。Fig. 10 is a side view of the razor handle of the second embodiment; 第二実施形態の剃刀用柄体の前方斜視図である。Fig. 3 is a front perspective view of a razor handle of a second embodiment; 第二実施形態の剃刀用柄体の正面図である。Fig. 4 is a front view of the razor handle of the second embodiment; 本実施形態の多層紙の断面を示す図である。It is a figure which shows the cross section of the multilayer paper of this embodiment.
　次いで、本発明の実施形態を図１～図１３を参照しながら以下に詳述する。但し、本発明は、図示の形状やこの実施形態に限定されるわけではない。本発明の範囲において、各部の詳細な形状や位置については、本発明の効果を妨げない範囲で変更可能である。また、本発明及び本明細書における「正面」、「背面」、「天」、「底」、「左」及び「右」の語は、観者の位置によって変わるものであり絶対的な位置を示す語ではない。本実施形態のハンガーでは、「正面」、「背面」は、使用時の正面及び背面と一致している必要はない。また、「第一」、「第二」等の語は、必ずしも操作の順を示す語ではない。 Next, embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 13. FIG. However, the invention is not limited to the illustrated shape or this embodiment. Within the scope of the present invention, the detailed shape and position of each part can be changed as long as the effects of the present invention are not hindered. In addition, the terms "front", "back", "top", "bottom", "left" and "right" in the present invention and this specification change depending on the position of the viewer, and are not absolute positions. not a denoting word. In the hanger of this embodiment, the "front" and "back" need not correspond to the front and back when in use. Also, terms such as "first" and "second" do not necessarily indicate the order of operations.
（第一実施形態）
　第一実施形態の剃刀用の柄体を図１～図６を参照しながら説明する。この柄体１は、特に図１に示すように、利用者に把持されるハンドル部１０と、カートリッジが取り付けられるヘッド部３０と、を有しており、特に図２に展開図を示すように、一枚のシート材から組み立てられている。 (First embodiment)
A razor handle of the first embodiment will be described with reference to FIGS. 1 to 6. FIG. 1, the handle 1 has a handle portion 10 to be gripped by a user and a head portion 30 to which a cartridge is attached. , assembled from a single sheet of material.
　この剃刀用の柄体１のヘッド部３０は、第一折り線４１を介してハンドル部１０の先端側に連接された取付部３１と、第一折り線４１と平行に配された第二折り線４２を介して取付部３１に連接する背板部３２と、を有している。 The head portion 30 of the razor handle 1 includes a mounting portion 31 connected to the distal end side of the handle portion 10 via a first folding line 41, and a second folding portion arranged parallel to the first folding line 41. and a back plate portion 32 connected to the mounting portion 31 via a line 42 .
　ハンドル部１０は後端部が細長形状をなしており、先端側が漸次拡幅する扇状をなし、その縁部に第一折り線４１が位置して、取付部３１に連接している。 The handle part 10 has an elongated shape at the rear end and a fan shape whose width gradually widens at the front end.
　取付部３１は、直線状の第一折り線４１の折り曲げによりハンドル部１０から立ち上がるように形成されており、第一折り線４１を軸として揺動可能に接続されている。つまり、取付部３１とハンドル部１０と間の角度が変化可能に接続されている。また、取付部３１は、刃や刃が収納されたカートリッジを取り付けるための取付面３１Ａを有しており、この取付面が、ハンドル部後端方向と反対側の面に形成されている。したがって、取付面に、刃やカートリッジが取り付けられると、第一折り線４１を軸として取付部３１が揺動すると、それに応じて、刃やカートリッジも動くようになっている。 The mounting portion 31 is formed to stand up from the handle portion 10 by bending the linear first folding line 41, and is connected so as to be able to swing around the first folding line 41 as an axis. That is, the mounting portion 31 and the handle portion 10 are connected so that the angle between them can be changed. The mounting portion 31 has a mounting surface 31A for mounting a blade or a cartridge containing the blade, and this mounting surface is formed on the side opposite to the rear end direction of the handle portion. Therefore, when the blade and the cartridge are attached to the attachment surface, when the attachment portion 31 swings about the first folding line 41, the blade and the cartridge move accordingly.
　ここで、本発明に係る剃刀用の柄体１では、取付部３１側を先端としてハンドル部１０から切り起こされ、この切り起こしによって板バネ弾性を生ずる舌片部５０を有している。舌片部５０の板バネ弾性は、シート材の剛性、コシ等の弾性変形性を主として、舌片部５０の幅及び長さ、さらにハンドル部１０の全体形状によって調整される。 Here, the razor handle 1 according to the present invention has a tongue portion 50 which is cut and raised from the handle portion 10 with the mounting portion 31 side as a leading end, and this cut and raise produces plate spring elasticity. The elasticity of the plate spring of the tongue portion 50 is adjusted mainly by the rigidity of the sheet material and the elastic deformability such as stiffness, and also by the width and length of the tongue portion 50 and the overall shape of the handle portion 10 .
　一方、背板部３２は、第二折り線４２で折り返されて取付部３１よりもハンドル部１０の後端側に位置されており、特に、背板部３２が、切り起こされた舌片部５０とハンドル部１０との間に差し込まれ、舌片部５０によって背板部３２は押持されるように構成されている。この図示の形態では、舌片部５０が背板部３２を押すだけはなく、ハンドル部１０とで背板部３２を挟持するように構成されている。この時、舌片部５０が、切り起こし前の位置に戻ろうとする力が強い場合には、背板部３２に弾性付勢力が掛かり、より強く挟持されるようになる。 On the other hand, the back plate portion 32 is folded back at the second folding line 42 and positioned closer to the rear end side of the handle portion 10 than the mounting portion 31. It is inserted between 50 and the handle portion 10 , and the tongue portion 50 presses and holds the back plate portion 32 . In this illustrated form, the tongue portion 50 not only pushes the back plate portion 32 but also is configured to sandwich the back plate portion 32 with the handle portion 10 . At this time, if the tongue portion 50 has a strong force to return to the position before being cut and raised, an elastic biasing force is applied to the back plate portion 32, so that the back plate portion 32 is clamped more strongly.
　この実施形態の柄体１では、構造的に、第一折り線４１を軸として取付部３１が揺動可能となっているとともに、第二折り線４２が第一折り線４１と平行に位置しているため、取付部３１が第一折り線４１を軸としてハンドル部１０の後端方向に向かうように動くと、第二折り線４２がハンドル部１０の後端側に近づくように移動する。その結果、背板部３２がより舌片部５０の基端部５１側へと差し込まれるようになる。さらに、取付部３１が第一折り線４１を軸としてハンドル部１０の後端方向に向かうと取付部３１がハンドル部に１０対してより起立した状態になっていく。その結果、背板部３２が舌片部５０の基端部５１側へと差し込まれていくだけなく、背板部３２が舌片部５０を押し上げようとする。すなわち、舌片部５０が、より切り起こされるようになっていくため、背板部３２を押し返す弾性付勢を発生し、高まっていく。こように、この実施形態では、取付部３１の揺動にともなう背板部３２の舌片部５０の基端部５１側への押し込みに対して弾性付勢が生ずるようになっている。 In the handle 1 of this embodiment, structurally, the mounting portion 31 can swing around the first folding line 41, and the second folding line 42 is positioned parallel to the first folding line 41. Therefore, when the attachment portion 31 moves toward the rear end direction of the handle portion 10 about the first fold line 41 , the second fold line 42 moves toward the rear end side of the handle portion 10 . As a result, the back plate portion 32 is inserted closer to the base end portion 51 side of the tongue piece portion 50 . Further, when the mounting portion 31 moves toward the rear end of the handle portion 10 about the first folding line 41, the mounting portion 31 becomes more upright with respect to the handle portion 10. As shown in FIG. As a result, the back plate portion 32 is not only inserted toward the base end portion 51 of the tongue portion 50 but also tries to push up the tongue portion 50 . That is, since the tongue portion 50 is further cut and raised, an elastic force that pushes back the back plate portion 32 is generated and increased. As described above, in this embodiment, an elastic force is generated against the pressing of the tongue portion 50 of the back plate portion 32 toward the base end portion 51 as the mounting portion 31 swings.
　ここで、この実施形態では、好ましい形態として、ハンドル部１０の舌片部５０の切り起こし方向と反対面の幅方向中央部に後端側から先端側に向かって、ハンドル部折り曲げ線１１が設けられており、ハンドル部１０が幅方向、つまり、舌片部５０の切り起こし方向に直交する方向でかつ切り起こされている側が谷側となるようにして略Ｖ字型に折り曲げられて立体的なハンドル部１０となっている。このようにハンドル部１０がＶ字型となっていると、平面的なハンドル部に比較して意匠性に優れるとともに、各段に操作性が向上する。 Here, in this embodiment, as a preferred form, the handle portion bending line 11 is provided from the rear end side to the tip side at the center portion in the width direction of the surface of the handle portion 10 opposite to the cut-and-raise direction. The handle portion 10 is bent in the width direction, that is, in a direction perpendicular to the cut-and-raised direction of the tongue portion 50, and is bent into a substantially V shape so that the cut-and-raised side becomes the valley side. A handle portion 10 is provided. When the handle portion 10 is V-shaped in this manner, the design is superior to that of a planar handle portion, and the operability is greatly improved.
　さらに、このハンドル部１０の折り曲げは、舌片部５０の機能と切り起こしを好適なものとする。すなわち、ハンドル部１０がＶ字型に折り曲げられると、舌片部５０の基端部５１が狭められる。その結果、舌片部５０の先端側がハンドル部１０から持ち上げられるようになる。この際、谷側に持ち上げられるようになるため、上記のハンドル部１０のように折り曲げられているのが望ましい。さらに、ハンドル部折り曲げ線１１が、図示の形態のように、舌片部５０の基端部５１まで至っていると、舌片部５０の基端部５１もやや湾曲するように折り曲がるため基端部５１で、バネとして機能しなくなる塑性変形の折れが生じ難くなるとともに、弾性付勢力が発生させやすくなる。 Furthermore, the bending of the handle portion 10 makes the function and cut-and-raise of the tongue piece portion 50 suitable. That is, when the handle portion 10 is bent into a V shape, the base end portion 51 of the tongue portion 50 is narrowed. As a result, the tip side of the tongue portion 50 can be lifted from the handle portion 10 . At this time, it is desirable that the handle portion 10 is bent like the handle portion 10 because the handle portion 10 can be lifted toward the valley side. Furthermore, if the handle portion bending line 11 extends to the base end portion 51 of the tongue portion 50 as in the illustrated embodiment, the base end portion 51 of the tongue portion 50 is also bent so as to be slightly curved. At the portion 51, it becomes difficult for the portion 51 to break due to plastic deformation, which makes it impossible to function as a spring, and it becomes easy to generate an elastic biasing force.
　さらに、この実施形態の柄体１では、特に、背板部３２の先端にハンドル部１０に接する摺動片３３が設けられており、取付部３１の動きに応じて、摺動片３３がハンドル部１０上を摺動するように構成されている。摺動片３３は、舌片部５０が切り起こされた際に残る両端位置、つまり、舌片部５０を挟んだ位置に接するように一対で設けられており、これにより、背板部３２の安定的な移動が行われるようになっているとともに、背板部３２とハンドル部１０との摩擦が調整され、舌片部５０が背板部３２に対して、所望の弾性付勢力に調整しやすくなる。 Furthermore, in the handle 1 of this embodiment, a sliding piece 33 is particularly provided at the tip of the back plate portion 32 to be in contact with the handle portion 10 , and the sliding piece 33 moves toward the handle according to the movement of the mounting portion 31 . It is configured to slide on the portion 10 . The sliding pieces 33 are provided as a pair so as to be in contact with both end positions remaining when the tongue portion 50 is cut and raised, that is, positions sandwiching the tongue portion 50 . In addition to stably moving, the friction between the back plate portion 32 and the handle portion 10 is adjusted, and the tongue portion 50 is adjusted to the desired elastic biasing force against the back plate portion 32. easier.
　なお、本実施形態の柄体の大きさは、一般的な剃刀の大きさにでき限定されないが、展開状態における全長Ｌ１が１２０～１３８ｍｍ、組み立て後の全長が８０～１００ｍｍ、ヘッド部の幅Ｌ２が、３５～４９ｍｍ、柄体の幅Ｌ３は１５～２０ｍｍとするのがよい。この大きさであれば、一般的な剃刀の大きさであり、また、シート材から強度の高い剃刀の柄体を構成できる。 The size of the handle of this embodiment is not limited because it can be the size of a general razor. However, it is preferable to set the width L3 to 35 to 49 mm and the width L3 to 15 to 20 mm. With this size, it is the size of a general razor, and a high-strength razor handle can be constructed from the sheet material.
（第二実施形態）
　次いで、図７～図１２を参照しながら、第二の実施形態を説明する。なお、第一実施形態と同様の構成については、上記のとおりであり、異なる点のみを説明する。第二実施形態は、背板部構造とそれによる舌板片の背板部への弾性付勢力の発生に異なるところがある。 (Second embodiment)
Next, a second embodiment will be described with reference to FIGS. 7-12. The configuration similar to that of the first embodiment is as described above, and only different points will be described. The second embodiment differs in the structure of the back plate portion and the generation of the elastic biasing force of the tongue piece to the back plate portion.
　この第二実施形態の柄体１は、特に、図７、図８及び図１０に示されているように、背板部３２が、第二折り線４２に向かって凸型のスリットと、このスリット３２Ｓの端に連接し、第二折り線４２に平行な一対の第三折り線４３と先端縁で囲まれる先端部分３２Ｅを有している。そして、この第三折り線４３でその先端部分がハンドル部側に向かう方向で折り返されており、第二折り線４２と第三折り線４３との間の部分に折り重ねられている。この折り返しによって、凸型のスリット３２Ｓで囲まれる部分が反転されて、背板部３２の折り返し縁に皿板状の窪地が形成されている。なお、図示の形状では、スリットの形状は、湾曲する半楕円状となっているが、スリットの具体的な形状は限定されない。 7, 8 and 10, the handle 1 of this second embodiment has a slit in which the back plate portion 32 is convex toward the second folding line 42 and this It has a leading end portion 32E surrounded by a pair of third folding lines 43 parallel to the second folding lines 42 and a leading edge, which are connected to the ends of the slit 32S. At the third folding line 43 , the tip portion is folded back in the direction toward the handle portion, and is folded to the portion between the second folding line 42 and the third folding line 43 . By this folding, the portion surrounded by the convex slit 32S is reversed, and a plate-shaped depression is formed at the folding edge of the back plate portion 32. - 特許庁In addition, in the illustrated shape, the shape of the slit is a curved semi-elliptical shape, but the specific shape of the slit is not limited.
　凸型スリット３２Ｓの形成位置は、舌片部５０の先端の延長線方向にあり、前記窪地は、舌片部５０が乗る位置に形成される。この第二実施形態では、舌片部５０とハンドル部１０との間に、この背板部３２の皿状の窪地が差し込まれるようになっている。換言すれば、この窪地が舌片部５０を受ける受け部３４となっている。第二実施形態では、舌片部５０が受け部３４に乗る態様で、背板部３２を押持している。さらに、この受け部３４は、第二折り線４２側に背板部３２の厚み分の壁が形成されるため、背板部３２は、受け部３４に乗っている舌片部５０の先端が、その壁部３５に当接する位置で動きが規制されるようなっている。したがって、過度に取付部３１が、ハンドル部１０の後端側に倒れ込むことが防止されている。 The formation position of the convex slit 32S is in the extension line direction of the tip of the tongue portion 50, and the recess is formed at the position where the tongue portion 50 rests. In this second embodiment, the dish-shaped recess of the back plate portion 32 is inserted between the tongue portion 50 and the handle portion 10 . In other words, this depression serves as the receiving portion 34 for receiving the tongue portion 50 . In the second embodiment, the back plate portion 32 is pressed in such a manner that the tongue portion 50 rides on the receiving portion 34 . Furthermore, since the receiving portion 34 has a wall corresponding to the thickness of the back plate portion 32 on the side of the second folding line 42 , the back plate portion 32 has a tip of the tongue portion 50 that rests on the receiving portion 34 . , and the movement is restricted at the position where it abuts against the wall portion 35 . Therefore, the attachment portion 31 is prevented from falling excessively toward the rear end side of the handle portion 10 .
（各実施形態の共通の構成）
　以上の各実施形態の柄体１は、取付部３１が第一折り線４１を軸として揺動可能に構成され、さらに、第二折り線４２側がハンドル部１０方向へ押し込まれた際に、背板部３２が舌片部５０によって弾性付勢されて反発力が生じるため、取付面３１Ａが対象物に対して弾性付勢を有して動くようになり、いわゆる首振り機構を有するものとなっている。したがって、柄体の取付面に、刃や刃が収納されたカートリッジが、刃先を第一折り線に向く方向で取り付けると、首振り機構を備える剃刀となる。なお、本発明の柄体においては取付面に対する刃やカートリッジの取り付け方法は限定されない。接着剤や粘着テープ、カシメやハトメ等適宜の固定手段によって固定して剃刀とすることができる。また、刃やカートリッジについても限定されない。市販の替刃カートリッジを用いてもよいし、紙製の枠に刃を固定して形成するなどされたものでもよい。 (Common configuration of each embodiment)
In the handle 1 of each of the above-described embodiments, the mounting portion 31 is configured to be able to swing around the first folding line 41, and further, when the second folding line 42 side is pushed toward the handle portion 10, Since the plate portion 32 is elastically biased by the tongue portion 50 to generate a repulsive force, the mounting surface 31A moves elastically with respect to the object, thus providing a so-called swinging mechanism. ing. Therefore, when a blade or a cartridge containing the blade is attached to the attachment surface of the handle with the blade edge facing the first folding line, the razor is provided with the swing mechanism. In addition, in the handle of the present invention, the method of attaching the blade and the cartridge to the attachment surface is not limited. The razor can be fixed by an appropriate fixing means such as an adhesive, an adhesive tape, caulking or eyelets. Also, the blade and cartridge are not limited. A commercially available replaceable blade cartridge may be used, or one formed by fixing a blade to a paper frame may be used.
　ここで、本実施形態の柄体における各折り線については、シート材の折り曲げ折り返しや折り曲げを容易に行えるようにするための線であり、位置決めのための単なる印刷による線であってもよいが、好ましくは、折筋とも称される罫線、ミシン目、ハーフスリットであり、特に、舌片部の弾性付勢力の調整、取付部の揺動のスムーズさ、背板部の動きのスムーズさ、折り返しのしやすさ等からハーフスリットとするのが望ましい。但し、すべてが同種の線である必要はない。必要な強度や折り曲げに必要な応力を考慮して適宜に配することができる。また、ミシン目とする場合のカットタイ比、ハーフスリットとする場合のスリット深さも同一にする必要はない。 Here, each folding line in the handle of the present embodiment is a line for facilitating folding and folding of the sheet material, and may be a simple printed line for positioning. , Preferably, it is a ruled line, a perforation, or a half slit, which is also called a crease. A half-slit is desirable for ease of folding. However, all lines do not need to be of the same type. It can be appropriately arranged in consideration of the required strength and the stress required for bending. Also, it is not necessary to make the cut-tie ratio for perforations and the slit depth for half-slits the same.
　ここで、さらに本実施形態の柄体１に、特に好適なシート材について説明していく。本実施形態のシート材は、上記のとおり脱プラスチックの観点から、パルプ繊維を抄紙した紙であるのが望ましい。具体的には、段ボール紙、コートボール紙、複数の紙層が積層されている多層紙が例示できる。もちろんプラスチックを含む合成繊維を含まない天然素材由来の繊維のみから構成される紙であるのがより望ましい。好適には、パルプ繊維のみからなる紙が望ましい。また、特に好ましい紙は、三以上の紙層を有する多層紙である。図１４に示すように、多層紙９０は、複数の紙層９１，９２が積層されているため各層の特性を変えることができ、強度を有しつつ折り曲げやすくできる。例えば、耐水性や耐摩耗性に優れるものの硬いが折れ易い傾向の一対の表層９１に柔軟な中層９２を組み合わせることで、強靭性や耐久性に優れるようになり、強度を有しつつ折り曲げたり組み立てやすくすることができる。また、各折り線をハーフスリットとした際に表層を含む複数層が完全に切断されないようにすることができ、各折り線における破断の恐れが格段に小さくなるとともに撓りを持たせることができる。なお、多層紙９０は、多層抄きによって製造することができる。また、多層紙９０は、市販されているものであってよく、例えば、大日製紙株式会社製のエリプラペーパー等が例示できる。この点から、本実施形態の柄体は、多層紙であって、折り線をハーフスリットとするのが特に好ましい。 Here, a particularly suitable sheet material for the handle 1 of this embodiment will be further described. The sheet material of the present embodiment is desirably paper made from pulp fibers from the viewpoint of eliminating plastics as described above. Specifically, corrugated cardboard, coated cardboard, and multi-layer paper in which a plurality of paper layers are laminated can be exemplified. Of course, it is more desirable that the paper is composed only of fibers derived from natural materials and does not contain synthetic fibers including plastics. Preferably, the paper is made of pulp fibers only. Also particularly preferred papers are multilayer papers having three or more paper layers. As shown in FIG. 14, the multi-layer paper 90 has a plurality of paper layers 91 and 92 laminated, so that the characteristics of each layer can be changed, and the paper can be easily folded while having strength. For example, by combining a pair of surface layers 91, which are hard but tend to break easily although they are excellent in water resistance and wear resistance, with a flexible middle layer 92, they become excellent in toughness and durability, and can be bent or assembled while having strength. can be made easier. In addition, when each folding line is formed into a half slit, a plurality of layers including the surface layer can be prevented from being completely cut, and the risk of breakage at each folding line can be greatly reduced and flexibility can be provided. . The multi-layered paper 90 can be manufactured by multi-layered paper. Moreover, the multi-layered paper 90 may be commercially available, for example, Ellipra paper manufactured by Dainichi Paper Co., Ltd., and the like. From this point, it is particularly preferable that the pattern body of the present embodiment is made of multi-layered paper and the folding line is a half slit.
　シート材を紙とする場合、その紙の坪量は、好ましくは７００ｇ／ｍ2以上、より好ましくは７５０ｇ／ｍ2以上、特に好ましくは８００ｇ／ｍ2以上である。この坪量の紙であれば、各部の折り曲げによる組み立てをしやすく、しかも十分な剛性及び強度としやすい。坪量の上限値は限定されないが、抄造時にカレンダーロール等で折れジワが発生しやすくなるおそれがあり、この点からは上限値については、１４００ｇ／ｍ2が好ましく、１２４０ｇ／ｍ2がより好ましい。また、シート材を紙とする場合の紙厚は、９００μｍ以上１，４００μｍ以下が好ましく、より好ましくは９５０μｍ以上１，３５０μｍ以下である。なお、坪量は、ＪＩＳ　Ｐ　８１２４（２０１１）に記載の「紙及び板紙－坪量測定方法」に準拠して測定した値であり、紙厚は、ＪＩＳ－Ｐ８１１８（２０１４）に記載の「紙及び板紙－厚さ及び密度の試験方法」に準拠して測定した値である。 When the sheet material is paper, the basis weight of the paper is preferably 700 g/m 2 or more, more preferably 750 g/m 2 or more, and particularly preferably 800 g/m 2 or more. With paper having this basis weight, it is easy to assemble by folding each part, and it is easy to obtain sufficient rigidity and strength. Although the upper limit of the basis weight is not limited, there is a possibility that creases may easily occur with a calender roll or the like during papermaking. From this point, the upper limit is preferably 1400 g/m 2 , more preferably 1240 g/m 2 . . When the sheet material is paper, the thickness of the paper is preferably 900 μm or more and 1,400 μm or less, more preferably 950 μm or more and 1,350 μm or less. The basis weight is a value measured in accordance with "Paper and paperboard - Basis weight measurement method" described in JIS P 8124 (2011), and the paper thickness is a value described in JIS-P8118 (2014) "Paper and paperboard - test methods for thickness and density".
　シート材を紙とする場合、その紙のＪＩＳ　Ｋ　７１７１に基づく「曲げ強さ」は、３９～４５ＭＰａであるのが望ましい。特に望ましくは、４０～４２．５ＭＰａである。この範囲であれば、舌片部及び背板部による弾性付勢力を好適に発揮でき、取付面が肌の曲面に追従しやすく、しかも、過度の面圧とならないものとすることができる。さらに、ＪＩＳ　Ｋ　７１７１に基づく「曲げ弾性率」は、６５００ＭＰａ～７５００Ｐａであるのが望ましい。この範囲であれば、舌片部及び背板部による弾性付勢力を好適に発揮でき、取付面が肌の曲面に追従しやすく、しかも、過度の面圧とならないものとすることができる。なお、「曲げ強さ」及び「曲げ弾性率」は、試験速度２ｍｍ／ｍｉｎ、支点間距離６４ｍで測定し、測定値は５回の平均値とする。 When the sheet material is paper, it is desirable that the "bending strength" of the paper based on JIS K 7171 is 39 to 45 MPa. Particularly desirable is 40 to 42.5 MPa. Within this range, the elastic biasing force of the tongue portion and the back plate portion can be suitably exerted, the mounting surface can easily follow the curved surface of the skin, and excessive surface pressure can be prevented. Furthermore, the "flexural modulus" based on JIS K 7171 is desirably 6500 MPa to 7500 Pa. Within this range, the elastic biasing force of the tongue portion and the back plate portion can be suitably exerted, the mounting surface can easily follow the curved surface of the skin, and excessive surface pressure can be prevented. "Bending strength" and "flexural modulus" are measured at a test speed of 2 mm/min and a distance between fulcrums of 64 m, and the measured value is the average value of five measurements.
　シート材を紙とする場合、その紙の構成パルプ繊維は、必ずしも限定されないが、好ましい構成パルプ繊維は、針葉樹未晒クラフトパルプ（ＮＵＫＰ）、針葉樹半晒クラフトパルプ（ＮＳＢＫＰ）、針葉樹晒クラフトパルプ（ＮＢＫＰ）等の針葉樹クラフトパルプ及び、広葉樹未晒クラフトパルプ（ＬＵＫＰ）、広葉樹半晒クラフトパルプ（ＬＳＢＫＰ）、広葉樹晒クラフトパルプ（ＬＢＫＰ）等広葉樹クラフトパルプである。その他のパルプとして、古紙パルプ、広葉樹亜硫酸パルプ、針葉樹亜硫酸パルプ等の化学パルプ、あるいは、ケナフ、麻、葦等の非木材繊維から化学的にまたは機械的に製造されたパルプ等の公知の種々のパルプを適宜組合せて使用されていれもよい。強度を発現させやすいことから、針葉樹クラフトパルプ及び広葉樹クラフトパルプが９０～１００質量％であるのが望ましい。この場合、針葉樹クラフトパルプ及び広葉樹クラフトパルプの配合割合は、５：９５～３０：７０であるのが望ましい。清潔感及び硬質感のある意匠性を有する剃刀とするならば、白パルプであり白色度が高い、針葉樹晒クラフトパルプ及び広葉樹晒クラフトパルプを用いることが特に好ましい。 When the sheet material is paper, the constituent pulp fibers of the paper are not necessarily limited, but preferred constituent pulp fibers are unbleached softwood kraft pulp (NUKP), semi-bleached softwood kraft pulp (NSBKP), and bleached softwood kraft pulp ( NBKP), and hardwood kraft pulp such as unbleached hardwood kraft pulp (LUKP), semi-bleached hardwood kraft pulp (LSBKP), and bleached hardwood kraft pulp (LBKP). Other pulps include chemical pulps such as waste paper pulp, hardwood sulfite pulp and softwood sulfite pulp, or various known pulps such as pulp chemically or mechanically produced from non-wood fibers such as kenaf, hemp, and reeds. Any suitable combination of pulps may be used. The content of softwood kraft pulp and hardwood kraft pulp is desirably 90 to 100% by mass because it facilitates development of strength. In this case, the mixing ratio of softwood kraft pulp and hardwood kraft pulp is preferably 5:95 to 30:70. For a razor with a design that gives a feeling of cleanliness and hardness, it is particularly preferable to use bleached softwood kraft pulp and bleached hardwood kraft pulp, which are white pulps with a high degree of whiteness.
　シート材を紙とする場合、その紙は、ＪＩＳ　Ｐ　８１１３（２００６）に準拠して測定された縦方向の引張強度が、７０ｋＮ／ｍ以上、横方向の引張強度が４０ｋＮ／ｍ以上であるのが望ましい。この引張強度を有していれば、折り畳みや組み立てに適する。 When the sheet material is paper, the paper must have a longitudinal tensile strength of 70 kN/m or more and a transverse tensile strength of 40 kN/m or more, measured according to JIS P 8113 (2006). is desirable. If it has this tensile strength, it is suitable for folding and assembly.
　また、シート材を紙とする場合、その紙は、ＪＩＳ　Ｐ　８１２５（２０００）に準拠して測定されたテーバー剛度が縦方向で１５０ｍＮ・ｍ以上であり、横方向で７０ｍＮ・ｍ以上であるのが望ましい。この範囲であれば、折り畳みや組み立てやすい。 In addition, when the sheet material is paper, the paper must have a Taber stiffness of 150 mN·m or more in the longitudinal direction and 70 mN·m or more in the lateral direction measured in accordance with JIS P 8125 (2000). is desirable. Within this range, it is easy to fold and assemble.
　さらに、シート材を紙とする場合その紙は、ＪＡＰＡＮ　ＴＡＰＰＩ　紙パルプ試験方法Ｎｏ．１８－１：２０００に準拠して測定されるＺ軸強度が４００ｋＮ/ｍ2以上、好ましくは４５０ｋＮ/ｍ2以上であるのが望ましい。トムソン加工等の打ち抜き、カッティングプロッター等のカッティングによって展開状態の柄体を製造しやすい。 Furthermore, when the sheet material is paper, the paper is tested according to JAPAN TAPPI Paper Pulp Test Method No. 18-1:2000, the Z-axis strength is 400 kN/m 2 or more, preferably 450 kN/m 2 or more. It is easy to manufacture the handle in the developed state by punching such as Thomson processing and cutting with a cutting plotter.
　シート材を紙とする場合、その紙は、ＪＩＳ Ｐ ８１４７ ＩＳＯ水平法による静摩擦係数が、０.２５～０．６５であるのが望ましい。特に舌片部と背板部の擦れがスムーズとなる。なお、本測定法は、シート材の裏面同士、表面同士で各３回の測定を行い、裏面同士、表面同士の３回目の測定値がいずれも上記範囲であるのが望ましい。ＩＳＯ水平法は，最初の滑りの静摩擦係数、３回目の滑りの静摩擦係数又は３回目の滑りの動摩擦係数の少なくとも一つを測定すればよく、最初の静摩擦係数よりも３回目の静摩擦係数が小さくなる傾向にあり、また、３回目の静摩擦係数の方がばらつきは小さくなる。 When the sheet material is paper, the paper preferably has a static friction coefficient of 0.25 to 0.65 according to the JIS P 8147 ISO horizontal method. In particular, the friction between the tongue portion and the back plate portion becomes smooth. In this measuring method, it is preferable that the measurement is performed three times for each of the back surfaces and the front surfaces of the sheet material, and the third measurement values for the back surfaces and the front surfaces are all within the above range. In the ISO horizontal method, at least one of the static friction coefficient of the first sliding, the static friction coefficient of the third sliding, or the dynamic friction coefficient of the third sliding should be measured, and the third static friction coefficient is smaller than the first static friction coefficient. The third static friction coefficient has a smaller variation.
　シート材を紙とする場合、その紙は、ＪＩＳ　Ｐ　８１５１に準拠するＰＰＳ（パーカープリントサーフラフネス）が、表面及び裏面ともに好ましくは３～８μｍ、より好ましくは４～７μｍであるのがよい。舌片部と背板部の擦れがスムーズとなる。 When the sheet material is paper, the PPS (Parker Print Surf Roughness) conforming to JIS P 8151 is preferably 3 to 8 μm, more preferably 4 to 7 μm, on both the front and back surfaces. The friction between the tongue piece and the back plate becomes smooth.
　シート材を紙とする場合、その紙は、ＭＭＤの値が、表面及び裏面ともに好ましくは１０～２５である。舌片部と背板部の擦れがスムーズとなる。ＭＭＤの測定は、摩擦感テスター（ＫＥＳ－ＳＥ、カトーテック社製）及びその相当機を用いて測定する。なお、摩擦子は、標準付属の直径０．５ｍｍのピアノ線を２０本隣接させて構成された、長さ及び幅がともに１０ｍｍの接触面を有するものを用いる。 When the sheet material is paper, the paper preferably has an MMD value of 10 to 25 on both the front and back surfaces. The friction between the tongue piece and the back plate becomes smooth. The MMD is measured using a friction tester (KES-SE, manufactured by Kato Tech Co., Ltd.) or its equivalent. As the friction element, a contact surface having a length and a width of 10 mm is used, which is formed by adjoining 20 standard piano wires having a diameter of 0.5 mm.
　シート材を本実施形態に係る柄体１に特に好ましい多層紙９０とする場合、その層数は、限定されないものの、五～九層とし、中層９２の層数を三層以上、特に五層とするのがよい。特に図１４に示す形態は、三層の中層９２を有するものとなっている。中層９２の総数が三層以上であると、多層紙９０の強靭性や耐久性がより発現しやすいとされている。中層９２の総数の上限としては、層間強度を維持する観点から、七層以下であることが好ましい。また、三層～七層は、円網多筒式抄き合わせ抄紙機を使用する場合における層間強度を維持しながら操業を行いやすい。 When the sheet material is the multilayer paper 90 that is particularly preferable for the pattern body 1 according to the present embodiment, the number of layers is not limited, but is 5 to 9 layers, and the number of layers of the middle layer 92 is 3 layers or more, especially 5 layers. Better to In particular, the embodiment shown in FIG. 14 has three middle layers 92 . It is said that when the total number of middle layers 92 is three or more, the toughness and durability of the multi-layered paper 90 are likely to be exhibited. The upper limit of the total number of intermediate layers 92 is preferably seven or less from the viewpoint of maintaining interlayer strength. In addition, three to seven layers are easy to operate while maintaining interlaminar strength in the case of using a cylinder multi-cylinder type combined paper machine.
　なお、シート材を多層紙９０とする場合、表層９１及び中層９２の坪量は、上記のシート材を紙とする場合の全体の坪量の範囲で調整することができ、特に限定されないが、好ましくは、表層９１の坪量としては、１層あたり６０．０ｇ／ｍ2以上１５０．０ｇ／ｍ2以下、特には１００～１４５ｇ／ｍ2が好ましい。また、中層９２全体の坪量としては、４９０ｇ／ｍ2以上７５０ｇ／ｍ2以下、特には６００ｇ／ｍ2以上７４０ｇ／ｍ2以下が好ましい。さらに、多層紙９０は、多層紙９０全体の坪量に対する一対の表層９１，９１の合計の坪量の割合が、１５．０％以上３３．０％以下のものであるのが好ましい。一対の表層９１の剛直性が高く、中層９２の柔軟性が優れるようになる。よって、折り線位置で折り曲げやすく、折り線以外の位置で折れ曲がり難くなり、強度と組み立て易さに優れる柄体としやすい。 When the sheet material is the multilayer paper 90, the basis weight of the surface layer 91 and the middle layer 92 can be adjusted within the range of the overall basis weight when the sheet material is paper, and is not particularly limited. Preferably, the basis weight of the surface layer 91 is 60.0 g/m 2 or more and 150.0 g/m 2 or less, particularly 100 to 145 g/m 2 per layer. Moreover, the basis weight of the entire middle layer 92 is preferably 490 g/m 2 or more and 750 g/m 2 or less, particularly 600 g/m 2 or more and 740 g/m 2 or less. Further, the multilayer paper 90 preferably has a ratio of the total basis weight of the pair of surface layers 91 and 91 to the total basis weight of the multilayer paper 90 in the range of 15.0% to 33.0%. The rigidity of the pair of surface layers 91 is high, and the softness of the middle layer 92 is excellent. Therefore, it is easy to bend at the folding line position, and it is difficult to bend at a position other than the folding line, and it is easy to obtain a handle that is excellent in strength and easy to assemble.
　シート材を多層紙９０とする場合、その多層紙９０における各層のパルプ繊維の配合は、表層９１は針葉樹クラフトパルプと前記広葉樹クラフトパルプの質量比（％）が０／１００以上１５／８５以下であるのが好ましい。また、この配合の表層９１ととともに、中層９２は、針葉樹クラフトパルプと前記広葉樹クラフトパルプの質量比（％）を１５／８５以上３５／６５以下であるのが好ましい。剛直で高密度化しやすい広葉樹クラフトパルプが多く含有され、表層が高密度で剛直な特性となるとともに、中層が表層よりも柔軟性に富む針葉樹クラフトパルプを多く含有するため、組み立て時の各折り線での折り曲げや繰り返しの折り曲げがあっても強度が低下しがたい柄体となりやすい。 When the sheet material is multi-layered paper 90, the blend of pulp fibers in each layer of multi-layered paper 90 is such that the mass ratio (%) of softwood kraft pulp and hardwood kraft pulp in surface layer 91 is 0/100 or more and 15/85 or less. It is preferable to have In addition to the surface layer 91 of this composition, the middle layer 92 preferably has a mass ratio (%) of softwood kraft pulp and hardwood kraft pulp of 15/85 or more and 35/65 or less. It contains a lot of hardwood kraft pulp that is rigid and easily densified, and the surface layer has high density and rigidity, and the middle layer contains a lot of softwood kraft pulp, which is more flexible than the surface layer. The handle tends to have a strength that does not easily decrease even if it is bent at a point or repeatedly bent.
　また、シート材を多層紙９０とする場合、その多層紙９０は、製紙用添加剤としてサイズ剤及び紙力増強剤の少なくとも一方を添加されているのが望ましい。所望の強度に調整しやすい。なお、多層紙９０には、本発明の目的とする効果を損ねない範囲でその他の各種添加剤を含有させることができる。例えば、ポリビニルアルコールやワックス等を塗布することができる。 In addition, when the sheet material is the multilayer paper 90, it is desirable that the multilayer paper 90 is added with at least one of a sizing agent and a paper strength agent as a papermaking additive. Easy to adjust to desired intensity. The multi-layered paper 90 can contain various other additives within a range that does not impair the intended effects of the present invention. For example, polyvinyl alcohol, wax, or the like can be applied.
　サイズ剤としては、スチレン系サイズ剤、アルキルケテンダイマー（ＡＫＤ）、アルケニル無水琥珀酸（ＡＳＡ）、中性ロジンサイズ剤、ロジンサイズ剤、変性ロジンエマルジョンサイズ剤などが挙げられる。これらの中でもロジンサイズ剤及び変性ロジンエマルジョンサイズ剤が好ましい。ロジンサイズ剤は、特に限定されない。ロジン系の物質は、例えば、ガムロジン、ウッドロジン、トール油ロジン等のロジン類をフマル酸、マレイン酸、アクリル酸等のα，β－不飽和カルボン酸あるいはその無水物で変性した強化ロジンや、ロジン類をグリセリン、トリメチロールエタン、トリメチロールプロパン、ペンタエリスリトール、ジグリセリン等の多価アルコールを反応させて得られるロジンエステルを挙げることができる。また、ロジンサイズ剤には、これらの単独またはその混合物をエマルジョン化したもの、単独でエマルジョン化した後に混合したものも含まれる。さらに、エマルジョン化したものに、サイズ発現性をより向上させるために各種ポリマーを添加したものも含まれる。 Styrene sizing agents, alkyl ketene dimers (AKD), alkenyl succinic anhydrides (ASA), neutral rosin sizing agents, rosin sizing agents, modified rosin emulsion sizing agents, and the like can be used as sizing agents. Among these, rosin sizing agents and modified rosin emulsion sizing agents are preferred. The rosin sizing agent is not particularly limited. Rosin-based substances include, for example, rosins such as gum rosin, wood rosin, and tall oil rosin modified with α,β-unsaturated carboxylic acids such as fumaric acid, maleic acid, and acrylic acid, or their anhydrides; Rosin esters obtained by reacting polyhydric alcohols such as glycerin, trimethylolethane, trimethylolpropane, pentaerythritol and diglycerin can be mentioned. The rosin sizing agent also includes those obtained by emulsifying these alone or a mixture thereof, and those obtained by emulsifying them alone and then mixing them. Furthermore, emulsified products to which various polymers are added in order to further improve size development are also included.
　紙力増強剤としては、ポリアクリルアミド系樹脂、ポリアミド系樹脂、ポリアミン系樹脂、アクリル樹脂系、メラミン樹脂、尿素樹脂、ポリアミドエピクロロヒドリン樹脂など公知の種々のものを使用できる。これらの中でも、両性紙力増強剤を使用することが好ましい。両性ポリアクリルアミドとしては、アクリルアミドとアニオン性モノマー及びカチオン性モノマーの共重合物、アクリルアミドとアニオン性モノマーとの共重合物のマンニッヒ変性物、ホフマン分解物等が挙げられる。特に両性ポリアクリルアミドは、自己定着機能を有しているため、紙間強度を向上させるべく増添したとしても、カチオン過多になることがなく、変性ロジンエマルジョンサイズ剤とともに含むことでこれを安定的に定着させることができる。 As the paper strength enhancer, various known ones such as polyacrylamide resin, polyamide resin, polyamine resin, acrylic resin, melamine resin, urea resin, and polyamide epichlorohydrin resin can be used. Among these, amphoteric paper strength agents are preferably used. Examples of amphoteric polyacrylamides include copolymers of acrylamide with anionic monomers and cationic monomers, Mannich-modified copolymers of acrylamide with anionic monomers, Hoffmann decomposition products, and the like. In particular, since amphoteric polyacrylamide has a self-fixing function, even if it is added to improve inter-paper strength, it does not become excessively cationic. can be established in
　サイズ剤の添加量としては、固形分で０．５ｋｇ／ｔ以上５．０ｋｇ／ｔ以下が好ましい。紙力増強剤の添加量としては、固形分で１２ｋｇ／ｔ以上３０ｋｇ／ｔ以下が好ましい。なお、「ｋｇ／ｔ」はパルプ１ｔあたりの質量（ｋｇ）を示す。サイズ剤の添加量をこの範囲とすると、耐水性が高まるため、湿った衣服類やタオルがかけられても十分な強度を保持しやすい。 The amount of sizing agent added is preferably 0.5 kg/t or more and 5.0 kg/t or less in solid content. The amount of the paper strength agent to be added is preferably 12 kg/t or more and 30 kg/t or less in terms of solid content. In addition, "kg/t" shows the mass (kg) per 1t of pulp. When the amount of the sizing agent added is within this range, the water resistance increases, so that it is easy to maintain sufficient strength even when damp clothes or towels are applied.
　また、シート材を多層紙９０とする場合、その多層紙９０は、表層９１及び中層９２の各層に製紙用添加剤として上記のサイズ剤及び紙力増強剤の少なくとも一方を添加することが好ましい。この場合、表層９１のサイズ剤の添加量としては、固形分で０．５ｋｇ／ｔ以上５．０ｋｇ／ｔ以下が好ましい。また、中層９２のサイズ剤の添加量としては、固形分で２．０ｋｇ／ｔ以上５．０ｋｇ／ｔ以下が好ましい。また、各層の紙力増強剤の添加量としては、固形分で１２ｋｇ／ｔ以上３０ｋｇ／ｔ以下が好ましい。この範囲とするとで、ハンガーに適した多層紙の層間強度などの各種紙力としやすい。 In addition, when the sheet material is the multilayer paper 90, the multilayer paper 90 preferably has at least one of the above-mentioned sizing agents and paper strength agents added to each layer of the surface layer 91 and the middle layer 92 as a papermaking additive. In this case, the amount of the sizing agent added to the surface layer 91 is preferably 0.5 kg/t or more and 5.0 kg/t or less in solid content. The amount of the sizing agent added to the middle layer 92 is preferably 2.0 kg/t or more and 5.0 kg/t or less in solid content. Moreover, the amount of the paper strength enhancer added to each layer is preferably 12 kg/t or more and 30 kg/t or less in terms of solid content. Within this range, various paper strengths such as interlaminar strength of multilayer paper suitable for hangers can be easily obtained.
　さらに、本実施形態に係る柄体は、シロキサン化合物が含有されているのが望ましい。シロキサン化合物が含有されていると、シロキサン結合によって剛度、強度、耐水性が高まる。シロキサン化合物は、シロキサン結合を有するものであれば、必ずしも限定されないが、柄体１は、人体に接する剃刀を構成するため、生体に対して毒性が無いか、低いものが望ましい。また、シロキサン化合物は、組み立て後のハンガーにシロキサン化合物を塗工する態様のほか、組み立て前のシート材や、素材としてのシート材に対して、適宜のアルコキシシラン溶液やアルコキシシラン溶液加工品を含侵させた後、加温や加熱して含有させてもよい。このようにすると、シロキサン化合物が、パルプ繊維自体に結合したり、パルプ繊維をコーティングしたりする態様で含有されるようになるため望ましい。 Furthermore, the pattern according to the present embodiment preferably contains a siloxane compound. When a siloxane compound is contained, the rigidity, strength, and water resistance are enhanced by siloxane bonds. The siloxane compound is not necessarily limited as long as it has a siloxane bond, but since the handle 1 constitutes a razor that comes into contact with the human body, it preferably has no or low toxicity to the living body. In addition, the siloxane compound includes an appropriate alkoxysilane solution and an alkoxysilane solution processed product for the sheet material before assembly and the sheet material as a material, in addition to the mode of coating the siloxane compound on the hanger after assembly. After infiltration, it may be added by warming or heating. This is desirable because the siloxane compound is bound to the pulp fibers themselves or is contained in such a manner as to coat the pulp fibers.
　さらに、本実施形態に係る柄体は、摩擦係数や表面粗さや折り畳み適性を過度に変化させず、柄体の機能及び本発明の効果を妨げない範囲で、表面保護剤や抗菌剤、抗ウィルス剤を塗布したり、含浸させたりしても良い。 Furthermore, the handle according to the present embodiment does not excessively change the coefficient of friction, surface roughness, and foldability, and does not interfere with the function of the handle and the effects of the present invention. An agent may be applied or impregnated.
　１…剃刀用の柄体、１０…ハンドル部、１１…ハンドル部折り線、３０…ヘッド部、３１…取付部、３１Ａ…取付面、３２…背板部、３２Ｅ…背板部の先端部分、３２Ｓ…スリット、３３…摺動片、３４…受け部、３５…壁部、４１…第一折り線、４２…第二折り線、４３…第三折り線、５０…舌片部、５１…舌片部の基端部。 Reference Signs List 1 Razor handle 10 Handle portion 11 Folding line of handle portion 30 Head portion 31 Mounting portion 31A Mounting surface 32 Back plate portion 32E Tip portion of back plate portion 32S... Slit 33... Sliding piece 34... Receiving part 35... Wall part 41... First folding line 42... Second folding line 43... Third folding line 50... Tongue part 51... Tongue Base end of piece.

Claims (5)

  1. 　剃刀用の柄体であって、
    　一枚のシート材から組み立てられ、
    　利用者に把持されるハンドル部と、
    　カートリッジが取り付けられるヘッド部と、を有し、
    　ヘッド部は、
    　刃又は刃が収納されたカートリッジを取り付けるための取付面を有し、第一折り線を介してハンドル部の先端側に連接され、その第一折り線を軸として揺動可能な取付部と、
    　第一折り線と平行に配された第二折り線を介して取付部に連接し、前記第二折り線で折り返されて取付部よりもハンドル部の後端側に位置している背板部と、を有し、
    　取付部側を先端としてハンドル部から切り起こされ、この切り起こしによって板バネ弾性を生ずる舌片部を有し、
    　第二折り線で折り返された背板部が、切り起こされた舌片部とハンドル部との間に差し込まれており、
    　前記舌片部が、背板部を押持するとともに、取付部の揺動にともなう背板部の舌片部の基端側への押し込みに対して弾性付勢を生ずる、
    　ことを特徴とする、剃刀用の柄体。     A handle for a razor,
    Assembled from a single sheet material,
    a handle to be gripped by a user;
    a head to which the cartridge is attached;
    The head part
    a mounting portion having a mounting surface for mounting a blade or a cartridge containing a blade, connected to the tip side of the handle portion via a first folding line, and capable of swinging about the first folding line;
    The back plate portion is connected to the mounting portion via a second folding line arranged parallel to the first folding line, is folded back at the second folding line, and is positioned closer to the rear end of the handle portion than the mounting portion. and
    having a tongue portion that is cut and raised from the handle portion with the mounting portion side as a leading end, and that has a tongue portion that produces plate spring elasticity by the cut and raised portion;
    The back plate portion folded back along the second folding line is inserted between the cut-and-raised tongue portion and the handle portion,
    The tongue portion presses the back plate portion and generates an elastic bias against the tongue portion of the back plate portion being pushed toward the base end side due to the rocking motion of the mounting portion.
    A handle for a razor, characterized by:
  2. 　舌片部が、背板部をハンドル部とで挟持しており、
    　背板部の先端にハンドル部に接する摺動片が設けられ、取付部の動きに応じて、摺動片がハンドル部上を摺動する、請求項１記載の剃刀用の柄体。     The tongue portion sandwiches the back plate portion with the handle portion,
    2. The razor handle according to claim 1, wherein a sliding piece is provided at the tip of the back plate portion to contact the handle portion, and the sliding piece slides on the handle portion in accordance with movement of the mounting portion.
  3. 　背板部は、
    　第二折り線に向かって凸型のスリットと、このスリットの端に連接し、第二折り線に平行な一対の第三折り線とで囲まれる先端部分が、前記第三折り線で折り返されて、
    　前記凸型スリットで囲まれる部分が反転されて形成される受け部を有し、この受け部に舌片部が乗って押持している、
    　請求項１記載の剃刀用の柄体。     The back plate is
    A tip portion surrounded by a slit convex toward the second folding line and a pair of third folding lines connected to the ends of the slit and parallel to the second folding line is folded back at the third folding line. hand,
    The portion surrounded by the convex slit has a receiving portion formed by inverting the portion, and the tongue portion rides on and presses the receiving portion.
    A handle for a razor according to claim 1.
  4. 　シート材が、パルプ繊維を抄紙した紙であり、その紙が、複数の紙層が積層されている多層紙である、請求項１～３の何れか１項に記載の剃刀用の柄体。 The razor handle according to any one of claims 1 to 3, wherein the sheet material is paper made from pulp fibers, and the paper is multilayer paper in which a plurality of paper layers are laminated.
  5. 　請求項１～４記載の剃刀用の柄体の取付面に、
    　刃又は刃が収納されたカートリッジが、刃先を第一折り線に向く方向で取り付けられている、ことを特徴とする剃刀。     On the mounting surface of the razor handle according to claims 1 to 4,
    A razor, characterized in that a blade or a cartridge containing the blade is attached in a direction in which the cutting edge faces the first folding line.
PCT/JP2023/002609 2022-02-14 2023-01-27 Razor body and razor WO2023153239A1 (en)

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JP2022-020531 2022-02-14
JP2022020531A JP2023117783A (en) 2022-02-14 2022-02-14 Shank body for razor, and razor

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WO2023153239A1 true WO2023153239A1 (en) 2023-08-17

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699602A (en) * 1954-06-17 1955-01-18 Basic Improvements Inc Safety razor
JPS62109069U (en) * 1985-12-27 1987-07-11
GB2260927A (en) * 1991-10-28 1993-05-05 Jong Yi Dai Disposable razor
JP2000334184A (en) * 1999-05-27 2000-12-05 Jujo Central Kk Folding razor made of paper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699602A (en) * 1954-06-17 1955-01-18 Basic Improvements Inc Safety razor
JPS62109069U (en) * 1985-12-27 1987-07-11
GB2260927A (en) * 1991-10-28 1993-05-05 Jong Yi Dai Disposable razor
JP2000334184A (en) * 1999-05-27 2000-12-05 Jujo Central Kk Folding razor made of paper

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