WO2023153239A1 - 剃刀用の柄体及び剃刀 - Google Patents

剃刀用の柄体及び剃刀 Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
handle
razor
folding line
paper
section
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2023/002609
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
善行 横田
仁 山室
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daio Paper Corp
Original Assignee
Daio Paper Corp
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 Daio Paper Corp filed Critical Daio Paper Corp
Publication of WO2023153239A1 publication Critical patent/WO2023153239A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Paper (AREA)
PCT/JP2023/002609 2022-02-14 2023-01-27 剃刀用の柄体及び剃刀 Ceased WO2023153239A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-020531 2022-02-14
JP2022020531A JP7808484B2 (ja) 2022-02-14 2022-02-14 剃刀用の柄体及び剃刀

Publications (1)

Publication Number Publication Date
WO2023153239A1 true WO2023153239A1 (ja) 2023-08-17

Family

ID=87564165

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/002609 Ceased WO2023153239A1 (ja) 2022-02-14 2023-01-27 剃刀用の柄体及び剃刀

Country Status (2)

Country Link
JP (1) JP7808484B2 (https=)
WO (1) WO2023153239A1 (https=)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023182237A (ja) * 2022-06-14 2023-12-26 大王製紙株式会社 剃刀
JP2024010845A (ja) * 2022-07-13 2024-01-25 大王製紙株式会社 剃刀及び剃刀用の刃固定部材
GB2634729A (en) * 2023-10-16 2025-04-23 Common Good Store Ltd Razor
JP7855431B2 (ja) 2022-07-13 2026-05-08 大王製紙株式会社 剃刀

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 (https=) * 1985-12-27 1987-07-11
GB2260927A (en) * 1991-10-28 1993-05-05 Jong Yi Dai Disposable razor
JP2000334184A (ja) * 1999-05-27 2000-12-05 Jujo Central Kk 紙製折り畳みカミソリ

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 (https=) * 1985-12-27 1987-07-11
GB2260927A (en) * 1991-10-28 1993-05-05 Jong Yi Dai Disposable razor
JP2000334184A (ja) * 1999-05-27 2000-12-05 Jujo Central Kk 紙製折り畳みカミソリ

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023182237A (ja) * 2022-06-14 2023-12-26 大王製紙株式会社 剃刀
JP7820245B2 (ja) 2022-06-14 2026-02-25 大王製紙株式会社 剃刀
JP2024010845A (ja) * 2022-07-13 2024-01-25 大王製紙株式会社 剃刀及び剃刀用の刃固定部材
JP7855431B2 (ja) 2022-07-13 2026-05-08 大王製紙株式会社 剃刀
GB2634729A (en) * 2023-10-16 2025-04-23 Common Good Store Ltd Razor

Also Published As

Publication number Publication date
JP7808484B2 (ja) 2026-01-29
JP2023117783A (ja) 2023-08-24

Similar Documents

Publication Publication Date Title
WO2023153239A1 (ja) 剃刀用の柄体及び剃刀
JP2024086866A (ja) カトラリー
JP2024096853A5 (https=)
JP2023117783A5 (https=)
JP7699688B2 (ja) 多層紙
JP2023114287A5 (https=)
KR20160073361A (ko) 위생 박엽지 롤
WO2004044321A1 (en) Soft tissue products containing polysiloxane having a high z-directional gradient
Popil Physical testing of paper
US6673465B2 (en) Paper/plastic laminate and method for making same
JP2023119921A (ja) 耐油性基材
Biricik et al. Effects of surface sizing with starch on physical strength properties of paper
JP7820245B2 (ja) 剃刀
JP6754417B2 (ja) 食器用塗工紙
JP5140373B2 (ja) 多層抄き板紙
JP2024010845A (ja) 剃刀及び剃刀用の刃固定部材
JP2024175324A (ja) 剃刀及び剃刀形成用シート
JP5142765B2 (ja) 強耐折強度紙
WO2023145750A1 (ja) 歯ブラシ及び歯ブラシ用の柄体
JP2023117781A5 (https=)
WO2023153226A1 (ja) ハンガー
JP2023117782A (ja) ハンガー
JP2026032481A (ja) シューズラック及びシューズラック組立シート
JP2025029963A (ja) ハンガー
JP2025077198A (ja) 吊り下げ箱

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23752704

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 23752704

Country of ref document: EP

Kind code of ref document: A1