DK160670B

DK160670B - CURLER TO BOOK HER

Info

Publication number: DK160670B
Application number: DK390482A
Authority: DK
Inventors: Hans Schneider; Dr Detlef Hollenberg
Original assignee: Henkel Kgaa
Priority date: 1981-09-24
Filing date: 1982-09-01
Publication date: 1991-04-08
Also published as: EP0075789B1; DK160670C; FI822875L; DE3277565D1; DK390482A; NO822957L; DE3138002A1; EP0075789A3; ATE30503T1; NO156434C; FI70125C; FI822875A0; FI70125B; EP0075789A2; NO156434B

Abstract

1. Hair-curling roller with an elongate, about cylindrical roller body (1, 2), which contains hollow spaces (5, 7) and on which the hairs are to be fixed by means of an elastic tightening band (11, 12, 13) to be stretched between spigots (19, 20) provided at the longitudinal ends of the roller body, and with longitudinal grooves (7), which extend in planes parallel one to the other and to the cylinder axis (4) from the periphery to a respective web (6) displaying holes (5), with side walls (8) substantially parallel to the planes, characterised thereby, that the longitudinal grooves (7) extend from one side of the periphery in one cylinder half and from the oppositely disposed side of the periphery in the other cylinder half each time in the manner of a chord into the roller body in such a manner that the roller body (1, 2) is producible solely with the aid of an injection moulding die consisting of two symmetrical tool halves or moulding cheeks.

Description

DK 160670 BDK 160670 B

Den foreliggende opfindelse angår en curler til at bølge hår og af den i krav l's indledning angivne art.The present invention relates to a curler for wavy hair and of the kind set forth in the preamble of claim 1.

Begrebet "cy1 inderformet" skal i denne forbindelse forstås så 5 generelt, at det omfatter langstrakte legemer, der er rotationssymmetriske om en akse. Disse legemer kan i området for deres længdeender have en hyperboloidformet voksende diameter.In this context, the term "cylindrical" is understood to be generally so as to include elongated bodies rotationally symmetrical about an axis. These bodies may have a hyperboloid-shaped growing diameter in the region of their longitudinal ends.

En curler af den indledningsvist omtalte art kendes fra DE-10 brugsmønster nr. 7733511.A curler of the kind mentioned above is known from DE-10 usage pattern no. 7733511.

Den fra teknikkens stade kendte hårcurler har imidlertid på tværs og parallel med midteraksen forløbende hulrum, der tjener til at nedsætte curlerlegemets generende vægt på hovedet, 15 og som ifølge en til grund for opfindelsen liggende erkendelse også danner et reservoir for det benyttede bølgningsmiddel og i stor udstrækning kan hindre neddrypning af overskydende bølgningsmiddel. For ved sprøjtestøbning at fremstille dette curler legeme, der har en relativ kompliceret geometrisk form, 20 kræves imidlertid forholdsvis kostbare værktøjer. Værktøjerne, hvortil der hører dele såsom kerne og skyder, der kun kan fremstilles med forholdsvis store omkostninger, udsættes under driftstiden for et vedvarende slid.The prior art hair curlers, however, have voids extending transversely and in parallel with the center axis, which serve to reduce the curling weight of the curler body on the head, and which, according to the present invention, also form a reservoir for the waveguide used and in large extent can prevent the dropping of excess waveguide. However, in order to produce this curler body having a relatively complicated geometric shape by injection molding, relatively expensive tools are required. The tools, which include parts such as cores and slides that can only be manufactured at relatively high cost, are subjected to sustained wear during operation.

25 Det er den foreliggende opfindelses formål at anvise et curlerlegeme til en curler til at bølge hår og af den indled ningsvis nævnte art, hvilket curlerlegeme kan fremstilles ved hjælp af en todelt sprøjtestøbeform, dvs. en sprøjtestøbeform, der har to bakker.It is an object of the present invention to provide a curler body for a curler for wavy hair and of the type mentioned in the introduction, which curler body can be manufactured by a two-part injection mold, i.e. an injection mold having two trays.

3030

Dette formål tilgodeses ifølge opfindelsen ved, at det indledningsvist omtalte curlerlegeme ifølge opfindelsen er ejendommelig ved det i den kendetegnende del af krav 1 anførte.This object is met in accordance with the invention in that the initially mentioned curler body according to the invention is characterized by the characterizing part of claim 1.

35 ved opfindelsens opnås, at der til curlerlegemets sprøjte støbning kun kræves en todelt form, i hvilken længdenoterne skal stå vinkelret på de to sprøjtestøbeformhalvdeles skille-It is achieved by the invention that the casting body spray molding requires only a two-part mold, in which the longitudinal notes must be perpendicular to the separation of the two injection mold halves.

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2 plan. Herved bliver det muligt altid at knytte de til den ene cylinderlængdehalvdel hørende længdenoter til sprøjtestøbeformens ene bakke, hvorved formbakkens kernedele kan rage ind i den anden formbakkes indre. Da formen ikke har nogen dele, der 5 skal bevæges ved brug, er sliddet også forholdsvis lille.2 plan. This makes it always possible to attach the longitudinal notes of one cylinder length half to the one tray of the injection mold, whereby the core parts of the mold tray can project into the interior of the other mold tray. Since the mold has no parts to be moved during use, the wear is also relatively small.

Den ved foden af den pågældende længdenot tilvejebragte liste tjener til den mekaniske stabilisering af curlerlegemet, men indeholder huller som forbindelse mellem den pågældende læng-10 denots tilstødende indre rum og curlerperiferien eller til en længdenot, der slutter sig til listen fra curler legemets overfor liggende yderside og strækker sig ind i dette. Forbindel-seshullerne skal have en sådan størrelse (cirkulær, oval eller rektangulær), at de lader bølgningsmiddel passere, men ikke 15 nævneværdigt svækker listen mekanisk.The list provided at the foot of the longitudinal notch serves to mechanically stabilize the curler body, but contains holes connecting the relevant longitudinal adjacent compartment to the curler periphery or to a longitudinal note joining the list from the curler body opposite exterior and extends into this. The connection holes must be of such size (circular, oval or rectangular) that they allow corrugating agent to pass, but not appreciably weaken the list mechanically.

Fortrinsvis indstilles curlerlegemets stabilitet henholdsvis bøjningsstivhed også med henblik derpå ved geometrien og materialevalg således, at der ved påspænding af spændbåndet ikke 20 optræder nogen forstyrrende bøjning af curlerlegemet.Preferably the stability of the curler body or bending stiffness is also adjusted for this purpose by the geometry and choice of material so that when the tensioning strap is applied, no disturbing bending of the curler body occurs.

Ifølge en videre udformning for opfindelsen skal spændbåndet selv bestå af en i forhold til den pågældende brugsvæske kemisk neutral plast, der er tilstrækkelig elastisk til at kunne 25 spændes hen over curlerlegemet og de derom viklede hår med en forholdsvis lille kraftanstrengelse. Hidtil blev der til dette formål benyttet gummibånd, der først skulle ekstruderes, og derefter i en yderligere arbejdsgang ved stansning skulle udstyres med fastgørelseshuller. Der anvises en udformning for 30 et spændbånd, der ved sprøjtestøbningsfremgangsmåden er fremstillet af et gummielastisk polyurethan (PUR), der skal forarbejdes termoplastisk, med ved sprøjtning umiddelbart i spændbåndet formede fastgørelseshuller for de på curlerlegemets længdeender anbragt tappe. Den materialeelasticitet, der er 35 særegen for det benyttede materiale, kan fortrinsvis yderligere suppleres ved en speciel formelasticitet for spændbåndet. F.eks. kan der i spændbåndet formes huller med f.eks. rund eller ruderformet omkreds og med i det væsentlige konstant brede randstrimler.According to a further embodiment of the invention, the strap itself is to consist of a chemically neutral plastic which is sufficiently resilient to be able to be tensioned over the curler body and the hair wound therewith with a relatively small effort. To date, rubber bands were used for this purpose, which had to be extruded first, and then, in a further punching operation, had to be fitted with fastening holes. An embodiment of a strap is disclosed which, in the injection molding process, is made of a rubber-elastic polyurethane (PUR) to be thermoplasticly processed, with spray holes formed immediately in the strap for the pins on the longitudinal ends of the curler body. Preferably, the material elasticity that is peculiar to the material used can be further supplemented by a special mold elasticity for the strap. Eg. holes can be formed with e.g. round or pan-shaped perimeter and with substantially constant wide strips.

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Som materiale til spændbåndet kommer følgende i betragtning: 5As material for the strap, the following are considered:

Termoplastisk polyurethan-elastomer fremstillet ved at omsætte en blanding af butandiol og en polymerdiol med en molekular-vægt fra 800 til 3000 på ester- og/eller etherbasis med diphe-nylmetandiisocyanat, hvor udgangsstoffernes mængdeforhold 10 ifølge teknikkens stade vælges således, at det produkt, der dannes, efter termoplastisk forarbejdning ved rumtemperatur har en Shore-hårdhed ifølge DIN 53505 fra 75 til 85.Thermoplastic polyurethane elastomer produced by reacting a mixture of butanediol and a polymeric diol having a molecular weight of 800 to 3000 on an ester and / or ether basis with diphenylmethane diisocyanate, wherein the starting ratio of the starting materials 10 is selected so that the product that forms after thermoplastic processing at room temperature has a Shore hardness according to DIN 53505 from 75 to 85.

På grundlag af den skematiske gengivelse af et udførelsesek-15 sempel forklares yderligere enkeltheder for opfindelsen. På tegningen viser fig. 1 og 2 set fra siden og i snit to forskelligt udformede curler legemer ifølge opfindelsen og 20 fig. 3-5 afbildninger af tre forskelligt udformede spændbånd til curleren ifølge opfindelsen.On the basis of the schematic representation of an embodiment, further details of the invention are explained. In the drawing, FIG. 1 and 2 are side views and sectional views of two differently shaped curler bodies according to the invention; and FIG. 3-5 depictions of three differently designed straps for the curler according to the invention.

I fig. 1 og 2 ses et curlerlegeme 1 henholdsvis 2 skematisk 25 fra siden (a) eller i tværsnit (b). Det langstrakte, princi pielt cylinderformede curlerlegeme 1 og 2 har i indbyrdes og i forhold til cylinderaksen 4 parallelle planer længdenoter 7, der strækker sig fra periferien til en liste 6 med huller 5, hvor længdenoternes sidevægge 8 i det væsentlige forløber pa-30 rallelt med planerne. Ifølge fig. 1 og 2 forløber længdenoterne 7 kordeagt igt (se fig. Ib og 2b) ind i curlerlegemet 1, 2.In FIG. 1 and 2, a curler body 1 and 2, respectively, are shown schematically from side (a) or in cross-section (b). The elongated, principally cylindrical curler body 1 and 2 have parallel planes 7, extending relative to the cylinder axis 4, extending from the periphery to a list 6 of holes 5, the side walls 8 of the longitudinal notes substantially extending parallel to plans. According to FIG. 1 and 2, the longitudinal notes 7 extend chordally (see Figs. 1b and 2b) into the curler body 1, 2.

Længdenoterne 7 gennemtrænger curler legemet 1, 2 næsten fuld-35 stændigt, dvs. indtil den ved periferien forblivende liste 6. Dette tilfælde er gengivet skematisk i fig. 1 og 2. Principielt skal placeringen af længdenoterne 7, listen 6 og hul- 4The longitudinal notes 7 permeate the curler body 1, 2 almost full-35, ie. until list 6 remains at the periphery. This case is shown schematically in FIG. 1 and 2. In principle, the location of the longitudinal notes 7, the list 6 and the hole 4 must be

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lerne 5 vælges således, at man til fremstilling af curlerlegemet kan konstruere en todelt sprøjteform, at vægten ved tilstrækkelig stabilitet for cur 1 er1 egernet bliver så lille som muligt, og at der står tilstrækkelig plads til rådighed i hul-5 rummet som reservoir for det flydende bølgningsmiddel. En todelt sprøjtestøbeform bliver mulig, når længdenoterne 7 alle ligger i indbyrdes parallelle planer (fig. 1 og 2). Skille-planet for de tilsvarende formbakker til at gennemføre sprøjtestøbningsfremgangsmåden forløber ved udførelsesformen ifølge 10 fig. 1 og 2 altid langs med den stiplede linie 9, der forløber gennem cylinderaksen 4 og står vinkelret på længdenoterne 7.The clay 5 is chosen so that for the manufacture of the curler body a two-part syringe shape can be constructed so that the weight at sufficient stability for the cur 1 er squirrel becomes as small as possible and that sufficient space is available in the cavity 5 as a reservoir for it. liquid waveguide. A two-part injection mold becomes possible when the longitudinal notes 7 all lie in mutually parallel planes (Figures 1 and 2). The separating plane of the corresponding mold trays for carrying out the injection molding process proceeds in the embodiment according to FIG. 1 and 2 always along the dashed line 9 extending through the cylinder axis 4 and perpendicular to the longitudinal notes 7.

Det har vist sig, at de geometriske mål for hullerne 5 og længdenoterne 7 har indflydelse på curlerlegemets reservoir-15 virkning. Medens længdenoten 7's længde (parallelt med aksen 4) er resultat af det pågældende curl er legemes totallængde -af stabi1 itetsgrunde bliver længdenoterne hensigtsmæssigt adskilt én gang midt i curlerlegemet 1 og 2 - har hullerne 5 og længdenoterne 7 fortrinsvis diametre henholdsvis bredder på 20 1,8 til 2,5 mm henholdsvis 1,2 til 2,0 mm.It has been found that the geometric dimensions of the holes 5 and the longitudinal notes 7 influence the reservoir-15 effect of the curler body. While the length of the longitudinal groove 7 (parallel to the axis 4) results from the curl in question is the total length of the body - for reasons of stability, the longitudinal grooves are conveniently separated once in the middle of the curler body 1 and 2 - the holes 5 and longitudinal grooves 7 preferably have diameters of width 20, respectively. 8 to 2.5 mm and 1.2 to 2.0 mm respectively.

I fig. 3-5 ses forskellige udførelsesformer for et spændbånd fremstillet af en sprøjtedygtig plast, der består af en gummielastisk polyurethan, der kan forarbejdes termoplastisk.In FIG. 3-5, various embodiments of a strap made of a sprayable plastic consisting of a rubber-elastic polyurethane which can be thermoplasticly processed can be seen.

25 Fortrinsvis benyttes til fremstilling af de i fig. 3-5 i rækkefølge i deres helhed med henvisningstallene 11, 12 og 13 betegnede spændbånd den af firmaet Elastogran GmbH, Lemforde, under betegnelsen Elastollan® leverede vedvarende termopla-stiske polyurethan-”elastomer". Ved at benytte sådanne eller 30 tilsvarende plaststoffer opnår man den særlige fordel, at spændbåndet kan sprøjtes i en kontinuerlig fremgangsmåde med fastgørelseshuller og den øvrige udformning uden nogen som helst form for stansearbejde eller tilsvarende.25 is preferably used to prepare the ones shown in FIG. 3-5, in their entirety, with reference numerals 11, 12 and 13, denoted by the elastomeric renewable thermoplastic polyurethane "elastomer" supplied by Elastogran GmbH, Lemforde under the designation Elastollan®. the particular advantage that the strap can be sprayed in a continuous method with fastening holes and the other design without any form of punching or the like.

35 Da de på grund af den krævede kemiske neutralitet over for den anvendte væske egnede sprøjtedygtige plaststoffer ikke altid på grund af udgangsmaterialet er så elastiske som gummi, er35 Due to the chemical neutrality required for the liquid used, the sprayable plastics suitable for the starting material are not always as elastic as rubber,

Claims

Curler for wavy hair according to claim 1, characterized in that the holes (5) in the strip (6) are circular, oval or rectangular. 35 in DK 160670 B:

Curler for wavy hair according to one of Claims 1 and 2, characterized in that the stiffness or bending stiffness of the curler body (1, 2) is adjusted so that when the clamping strap (11, 12, 13) is not applied 5 any disruptive bending of cur 1 is 1 squirrel.

Curler for wavy hair according to one of claims 1-3, characterized by a tension band (11, 12, 13) made by injection molding made of rubber-elastic polyurethane, which can be thermoplasticly processed and with attachment holes formed in the tension band at the spray. (17, 18) for the pins (19, 20) provided at the longitudinal ends of the curler body (1, 2).

Curler for wavy hair according to one or more of claims 1-4, characterized in that the material elasticity of the strap (11, 12, 13) is supplemented with mold elasticity, e.g. holes therein (14, 15) sprayed with substantially constant wide strips (16). 20 25 30 35