EP0505754B1 - Bügelloser, stabförmiger Lockenwickler sowie Verfahren zu seiner Herstellung - Google Patents
Bügelloser, stabförmiger Lockenwickler sowie Verfahren zu seiner Herstellung Download PDFInfo
- Publication number
- EP0505754B1 EP0505754B1 EP92103237A EP92103237A EP0505754B1 EP 0505754 B1 EP0505754 B1 EP 0505754B1 EP 92103237 A EP92103237 A EP 92103237A EP 92103237 A EP92103237 A EP 92103237A EP 0505754 B1 EP0505754 B1 EP 0505754B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- winder body
- slot
- winding body
- curler
- winder
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 10
- 210000004209 hair Anatomy 0.000 claims description 47
- 230000004323 axial length Effects 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 229920001821 foam rubber Polymers 0.000 claims 4
- 238000004804 winding Methods 0.000 description 83
- 239000002984 plastic foam Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 208000014674 injury Diseases 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
- A45D2/12—Hair winders or hair curlers for use parallel to the scalp, i.e. flat-curlers
- A45D2/14—Hair winders or hair curlers for use parallel to the scalp, i.e. flat-curlers of single-piece type, e.g. stiff rods or tubes with or without cord, band, or the like as hair-fastening means
- A45D2/18—Flexible curlers
Definitions
- the invention relates to a non-iron, soulless, rod-shaped hair curler with the features mentioned in the preamble of claim 1. At the same time, a method for producing such a hair roller is shown.
- the use of such hair curlers for winding human hair is known. They are used in both private and commercial areas.
- a hair curler of the type described above is known from DE-C-37 13 280. It has a winding body made of plastic foam, which can have an open-pore surface.
- the rod-shaped bobbin here has at least approximately a square cross-section, the resilience being chosen such that only the edges of the bobbin are rounded when the hair is being wound up.
- the device for fixing the curved shape of the winding body consists of a flexible wire core accommodated in the winding body.
- an eyelet is provided at one end region of the winding body and surrounds an edge-closed opening. The eyelet has considerably larger external dimensions than the rest of the winding body.
- the opening in the eyelet is dimensioned such that the other end region of the winding body, on which a tapering extension is located or is formed, can be inserted into the opening of the eyelet.
- the shape of the eyelet hardly changes when it is pushed in, ie the material in the eyelet area is not significantly deformed. When tightening, the shape of the parts changes according to the resilience of the plastic foam.
- the design of the fixing device in the form of the plastically deformable core, in particular made of wire, is disadvantageous in several respects. It requires a separate operation for its attachment, in which the wire core is inserted axially into the winding body. The ends of the wire core are appropriately bent like an eyelet to counteract the risk of injury.
- the wire core is of shorter axial length than the winding body. If the winding body is clumsily bent off in the area of the core ends, the plastic foam of the winding body is broken open and the end of the wire core protrudes visibly, so that there is an increased risk of injury.
- the manufacture is difficult because a correspondingly larger piece of material is required for the special design of the eyelet as a result of the protruding areas. It is indeed possible to punch out such hair curlers from a foamed-out sheet of plastic foam by arranging the eyelets and the tapered areas in the opposite direction. However, this creates waste at least in the amount of the openings passing through the eyelets.
- the wide protruding eyelets are also a hindrance when transporting the hair curlers, i.e. within the hair curler pack and also when storing the hair curlers after use.
- a non-iron, soulless hair curler which has the shape of a thin strip so that its width is larger than its height.
- This hair curler has a winding body which is provided with an edge-closed slot in the central area.
- This slot can be due to the resilient properties of the material Be wound body so that the end of a strand of hair can be inserted into the opening created. Due to the elasticity of the material of the curler, this slit closes again and holds the end of the strand of hair in a clamping manner, so that a winding process can follow on the winding body.
- the winding body has in one end region an edge-closed opening for a tongue formed in its other end region.
- the cross section of the opening is dimensioned according to the cross section of the tongue.
- the tongue has a cross section tapering towards its free end, so that it can be inserted into the eyelet-like opening without the passage cross section of the opening changing. Since the hair curler is designed in the form of a thin strip, the tongue looks out on the other side of the eyelet after insertion and can be gripped there and tightened as part of the elasticity of the material of the hair curler.
- the opening that is present from the outset also deforms in the context of the material elasticity. In order to achieve a tight fit of the tongue in the opening, the tongue can otherwise be provided with teeth or a corrugation.
- a hair curler which consists of a strip of flexible material, in particular of soft rubber.
- This strip has a comparatively long slit in its central region, through which the hair tips are inserted at the start of an unwinding process.
- the strip has a slot in each end region, which can also be designed as a cut and which is provided with a punched-out hole at both ends.
- the length of this slot-like opening is essentially the same as the width of the strip.
- the slot-like opening must not be longer than the width of the strip, otherwise there is a risk that as a result insufficient frictional contact, the end of the strip inserted into the slot could slip out again.
- the length of the slot-like opening must not be shorter than the width of the strip, because in such a case the strip would fold.
- the end regions of the strip are tapered in a tongue-like manner in order to facilitate insertion into the slot-like opening.
- a hair curler of the papillot type in which the winding body consists of a round sealing cord-like, extrusion-foamed cord or a corresponding section thereof.
- the device for fixing a curved shape of the hair curler here also consists of a deformable core with rounded ends, which is inserted axially into the winding body made of plastic foam.
- Such wire souls also allow only a limited number of bends before they break.
- the winding body has a round cross section. A constant cross-section over the length is achieved in that a calibration is carried out after the extrusion foaming.
- the surface of the extrusion-foamed cord is pulled through a heated nozzle, as a result of which the surface closes disadvantageously so that the hair unintentionally slides off on this smooth surface, or the constant diameter over the length is achieved by a peeling process, that creates waste.
- the surface of the winding body is advantageously open-pored and there is a better grip on the winding body when winding the hair.
- a hair curler is known from LU-A-29 451, the winding body of which consists of a tube section made of soft plastic. In its central region, it has a radially continuous narrow slot arranged parallel to the longitudinal axis, which, however, serves to pinch the tips of the hair.
- an anchoring tip is provided at the end of the winding body, which engages in the closed position of the hair curler in the other end of the tubular winding body.
- the invention is based on the object, starting from a generic hair roller of the type described above, to provide a hair roller which is simple to manufacture and has a simple structure.
- the winding body has constant external dimensions at least over its substantial axial extent including the two end regions, that the opening is designed as a slot or as a narrow punched-out section with a relatively large length compared to the diameter or the relevant dimension of the winding body and thus the slotted or punched area of the winding body is elastically deformable into an eyelet, into which the other end area can be inserted with a cross section that is unchanged compared to the cross section of the winding body.
- the winding body has constant external dimensions over its axial extent, that is to say in the central region and in the region of the two ends, which also includes the end regions, which are essential components of the device for fixing the curved shape of the winding body. It is irrelevant, on the other hand, whether the free ends of the winding body are cut off smoothly in terms of the end wall or are provided with a rounding. It is also important to design the opening as a slot or as a narrow punched-out section which extends parallel to the axis of the winding body over a certain axial area.
- the eyelet does not have to be permanently formed, as is known in the prior art, and thus must always be present, but rather the restoring force of the plastic foam is used to merely form or form the slot during the manufacture of the winding former, which can only be expanded to the eyelet at the moment when the hair has previously been wound onto the winding body and the other end of the winding body is to be inserted into the eyelet formed by deformation of the plastic foam. So that the slot or the narrow punched out to the eyelet with a sufficient free cross section can be easily expanded, the opening must be compared to Diameter or the relevant dimension of the winding body of relatively large length.
- the slot length is dimensioned such that the plastic foam material of the winding body is not unduly stressed when the eyelet is formed, so that the slot does not tear any further or tear through the plastic material.
- the formation of the slot as a cut or at most as a narrow punched out is aimed at weakening the remaining cross section of the winding body as little as possible at this point.
- the slot can even be made in such a way that the surface of the winding body in the area of the slot walls deforms to a closed surface or forms a closed surface which is less prone to tearing than an open-pore surface.
- An open-pore surface on the other hand, has better retention properties against inadvertent slipping out of the inserted other end of the winding body in the fixed position.
- the outer dimensions of the winding body in the slotted area and in the unslitting area match, so that the winding body - in contrast to the known eyelet design - has constant diameter over the length or constant external dimensions in the case of angular design. This is the case at least essentially in the central area; rounded ends of the winding body, if this is made by injection molding, do not interfere.
- Such a hair curler can be produced particularly advantageously from a cord of foamed plastic foam in the extruder. It is only necessary to cut winding bodies from such a raw winding body as an endless cord and to make at least one slot before or after each. Such a hair roller is very simple and can be manufactured without waste of material. It is easy to use because its handling is immediately understood.
- the winding body made of plastic foam can also twist, ie twist, the position of the Align the slot with its main surfaces without further ado in order to reach the fixing position, without a pull causing a pain being exerted on the wound tufts of hair.
- the restoring force of the foamed plastic material of the winding body is surprisingly sufficient to hold the other end inserted through in connection with the formation of a slit, so that accidental opening or leaving the fixing position does not occur. Due to the complete elimination of a wire core, the disadvantages associated therewith are eliminated and such a hair curler can consequently also be produced comparatively inexpensively. The curler no longer contains any hard and solid parts and is therefore also suitable for use overnight.
- the winding body including the two end regions can have a round or angular cross section.
- a round, i.e. cylindrical cross section can be driven out particularly easily from the nozzle of an extruder.
- An angular cross section for example in a square shape, can be produced simply by cutting hardened plate material from foam plastic. In both cases you can work without waste. Depending on the cross-section chosen, this cross-section also runs through the area that carries the slot.
- the slot can expediently have an axial length which corresponds approximately to 3 times the diameter or the relevant dimension of the winding body.
- the required opening width of the eyelet can be generated by slight axial pressure on the relevant end of the winding body.
- the slot can have an axial length of approximately 45 mm, the unshit region adjoining the free end having an axial length of approximately 15 mm.
- the specified dimensions do not have to be adhered to exactly, but also depend on the type of plastic material used.
- the method for producing such a non-iron, soulless rod-shaped hair curler from resilient, resilient plastic foam provides that an elongated raw winding body is formed from the plastic foam with the simple or multiple axial length of the winding body and with at least substantially constant external dimensions over the length, and that at least one slot extending parallel to the longitudinal direction or a narrow punch-out with a relatively large length compared to the diameter or the relevant dimension of the winding body is formed at least in one end region for each winding body.
- a raw bobbin is understood to mean an endless cord, in particular an extruded cord, but also a punched or drilled piece of plastic foam, which as a rule is several times the length of a bobbin, so that several bobbins are formed from a raw bobbin by a cutting process.
- the winding body which can then be referred to as a raw winding body with the simple axial length of the winding body, is created in the injection mold.
- the formation of the slit before, during or after the formation of the winding body from the raw winding body depends on the other manufacturing steps. So it is easily possible to carry out the cutting and the cutting process at the same time with one tool.
- a flat, narrow core is used, which leaves the slot or the narrow recess.
- the plastic foam can be extruded like a round cord to form the raw winding body and the slot is formed by a partial cut.
- a cut can expediently be carried out with a heated knife, which not only enters the plastic foam more easily, but also closes the cut surfaces of the otherwise expediently open-pore surface.
- a reinforcing effect is useful and important for the two axial ends of the slot, so that the slot does not tear when the eyelet is resiliently formed.
- the winding body with rounded ends and at least one slot is made by injection molding.
- the surface of the winding body will more or less be closed-pore.
- other measures can be taken to make the surface rougher again, for example the formation of grooves or grooves on the circumference of the winding body.
- a hair roller 1 which consists of a section of foamed plastic in the form of a cord. Such a section forms a winding body 2, which here has a circular cross section 3. This cross section 3 and thus the outer diameter of the Winding body 2 extends constantly over its entire axial length.
- a central region 4 is formed on the winding body 2, in which the tuft of hair is wound up and thus taken up, as can be seen in FIG. 2.
- the middle region is followed by two end regions 5 and 6, which extend to free ends 7 and 8 of the winding body 2.
- a slot 9 is provided which extends parallel or in alignment with an axis 10 of the winding body 2 and is provided continuously over the entire cross section, so that the material of the winding body is halved in the area of the slot 9.
- the two parts of the winding body 2 resulting on the right and left of the slot 9 should be of identical design in cross section.
- the slot 9 is closed at the edge, i. H. it does not overflow into an outer boundary of the winding body 2.
- a non-slotted region 11 results in the direction of the free end 7.
- the other end region 6 is in no way specially designed. It merges into the central region 4 without change or is designed in exactly the same way as this central region 4. This does not exclude that the end region 6 can also be designed to be tapered once in order to make it easier to insert it into the slot 9 which elastically widens into an eyelet enable if the fixing position according to Figure 2 is to be taken. Even rounded end regions 5, 6 in the region of the free ends 7 and 8 are not disturbing, but do require a corresponding manufacturing outlay.
- the hair roller according to FIG. 1 is wound with its middle region 4 over a tuft of hair 12, which is done in the usual way.
- the winding body 2 is then brought into the curved position according to FIG. 2 and by applying a slight axial pressure according to arrow 13, the can be exercised by a finger of a hand, the slot 9 opens to an eyelet-like opening, which takes about diamond-shaped shape.
- the other end region 6 can then be easily inserted with the other hand through the eyelet formed from the slot 9.
- the restoring force of the plastic foam material of the winding body is sufficient to maintain the fixed position, as shown in FIG. 2. It is also readily possible to change the fixed position as shown by pulling the end region 6 a little further.
- FIG. 3 shows a second embodiment of the hair curler 1.
- the winding body 2 has a square cross section 14 here.
- the central region 4 and the two end regions 5 and 6 are also formed here.
- the slot is designed here as a narrow punch 15 and provided twice, that is, in both end areas 5 and 6.
- the two punch 15 are aligned with their main surfaces and are also designed to the longitudinal axis that the material areas resulting from the punch 15 and 16 Keep winding body 2 with the same remaining cross-section.
- the cutouts 15 are very narrow in order to damage these residual cross sections as little as possible.
- the winding body has a cross section 14 of 10 x 10 mm.
- the free area 11 is also 10 mm long, while the punch 15 is approximately 30 mm long.
- the punching 15 can also be formed by a recess if the individual manufacture of such hair curlers 2 is carried out by injection molding. However, cheaper manufacturing options result from an endless production of a raw winding body from which winding bodies are cut to length.
- the two punched holes 15 can also be arranged rotated by 90 ° about the axis 10. It goes without saying that cross sections other than the round cross section 3 or the square cross section 14 can also be realized can.
Landscapes
- Hair Curling (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4106439A DE4106439A1 (de) | 1991-02-28 | 1991-02-28 | Buegelloser, stabfoermiger lockenwickler sowie verfahren zu seiner herstellung |
DE4106439 | 1991-02-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0505754A2 EP0505754A2 (de) | 1992-09-30 |
EP0505754A3 EP0505754A3 (en) | 1993-03-03 |
EP0505754B1 true EP0505754B1 (de) | 1995-05-10 |
Family
ID=6426174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92103237A Expired - Lifetime EP0505754B1 (de) | 1991-02-28 | 1992-02-26 | Bügelloser, stabförmiger Lockenwickler sowie Verfahren zu seiner Herstellung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0505754B1 (enrdf_load_stackoverflow) |
DE (2) | DE4106439A1 (enrdf_load_stackoverflow) |
ES (1) | ES2073200T3 (enrdf_load_stackoverflow) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4306823C1 (de) * | 1993-03-04 | 1994-08-18 | Stoehr Anne | Lockenwickler zum Verknoten |
DE4433075A1 (de) | 1994-09-16 | 1996-03-21 | Wiegner Georg | Lockenwickler |
DE19600454C2 (de) * | 1996-01-09 | 1998-12-10 | Juenemann Gmbh | Bügelloser, seelenloser Lockenwickler zum Aufwickeln und Festhalten menschlicher Haare |
DE19648523C2 (de) * | 1996-11-23 | 2001-04-19 | Georg Wiegner | Lockenwickler |
USD1029387S1 (en) * | 2023-12-14 | 2024-05-28 | Yesenia Leonor Hipolito | Bendable hair rod with clasp |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR963852A (enrdf_load_stackoverflow) * | 1950-07-24 | |||
US2111171A (en) * | 1937-04-20 | 1938-03-15 | Vernon A Conklin | Hair curler |
US2121476A (en) * | 1937-04-29 | 1938-06-21 | Barre Cecelia De La | Device for curling hair |
DE820190C (de) * | 1949-08-24 | 1951-11-08 | Walter Preiss | Lockenwickler |
DE1915547A1 (de) * | 1969-03-27 | 1970-10-01 | Fagerdala Ind Ab | Lockenwickler |
DE8226359U1 (de) * | 1982-02-10 | 1983-02-10 | Ehmann, geb. Ghini, Josefine, 6900 Heidelberg | Lockenwickler |
US4648414A (en) * | 1984-08-16 | 1987-03-10 | Cel Co., Inc. | Bendable lightweight article for personal grooming and method of making |
DE3541842A1 (de) * | 1985-11-27 | 1987-06-04 | Stoehr Anne | Lockenwickel nach papillotenart und verfahren zu ihrer herstellung |
DE3713280A1 (de) * | 1986-05-27 | 1987-12-03 | Heinz G Juenemann Gmbh & Co Kg | Buegelloser stabfoermiger lockenwickler |
-
1991
- 1991-02-28 DE DE4106439A patent/DE4106439A1/de active Granted
-
1992
- 1992-02-26 ES ES92103237T patent/ES2073200T3/es not_active Expired - Lifetime
- 1992-02-26 EP EP92103237A patent/EP0505754B1/de not_active Expired - Lifetime
- 1992-02-26 DE DE59202112T patent/DE59202112D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE4106439C2 (enrdf_load_stackoverflow) | 1993-07-15 |
ES2073200T3 (es) | 1995-08-01 |
EP0505754A3 (en) | 1993-03-03 |
DE59202112D1 (de) | 1995-06-14 |
EP0505754A2 (de) | 1992-09-30 |
DE4106439A1 (de) | 1992-09-03 |
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