DE1704387A1 - Hollow plastic component - Google Patents

Description

"Hollow plastic component" This refers to a hollow plastic component, which is suitable for various purposes, as well as a method for producing the same.

; The subject of the invention is an improved plastic component, that is relatively stiff and yet light and can be manufactured cheaply can.

According to the invention, the hollow synthetic resin component has a pair of opposing ones Plastic sheeting and a hollow plastic core member that sits between the opposite slides to @@ eorclnet is and oppositely arranged `line possesses, which are finitely fused to the = rain-covering foils. r @ nt: @; e.enesetzt Lie @ reride outer walls of the spa building can uriabh-.n -i! to the desired decorative or structural profile can be shaped. A special @us @@. Nruns @: orrn the @ rfina.uri = -; k Applies to) safety disks for jiutornobile, such as those on be attached to the front part of the vehicle interior. In this embodiment the component the;, xestal "t a hollow plate, which corresponds to your automobile frame is shaped. On the one hand, a solcnec3 component has sufficient self-tra ... i # ifu @ en:; cha.Lten on to the profile and the gene level shape without additional reinforcement to preserve, -on the other hand, also an insufficient flexibility or energy-absorbing Egg: # Properties to restore his-jorm after deformation due to pressure or impact to accept. The component according to the Lrfindunpp: come in the: mentioned embodiment # 2-sform special advantages too, de. the: .e1 @ =. tte can be constructed in such a way that it is at either yields or collapses to a certain impact, depending on how as_e construction and, li'orm of the core link and / or the Versch @ -eißun # P7 between the core_: song and the decongested foils, is chosen.

The component after the @rfindLunr ran during the work of the forming get a patterned surface without an additional molding process or a patterned coating is required.

The inventive component can be shaped so that it-a Many times its weight. It can be used raeisniel3-wise have sufficient rigidity as a floor or door batten, in the production but be cheap and have a low weight. The component can also be shock absorbing can be designed, which makes it suitable, for example, for device cassettes and protectors eij @ net. Furthermore, the component can be formed into liquid-tight newspapers or containers , creating tough, lightweight containers for use as gas containers and / or: liquid lines arise. These containers or newspapers can designed with several canals or provided with an inseparable insulating chamber without the need for further shaping work. -The -jirl'indunz7 also includes a method for forming a rjoi II "part, consisting of the following Working o *. 'NFen: Heating up the vain pair of plastic sheets overlying the cradle on their Verscilrnelzungstemperatur, support of the heated opposite # -en 2olien at their fusing temperature in the distance from each other between one Pair of tool end faces, 3ewegen cier; le.r @ :. zeug-ätirnfllzchen in forming Contact with the overlapping foils, maintaining the spacing ratio @; *: ird, drawing off a negative pressure through the lerXzeugstiraflächen to the foils adapt to the shape of the tool face, insert a plastic core member with opposing parts between the formed opposing foils, Closing the tool end faces to oppose certain parts of the mold formed therewith Foils in fusion contact with at least parts of these entegearesetzt to bring lying parts of the core glass, cooling the oppositely arranged Films while maintaining the contact of the opposing films with the '' Tool front surfaces and loosening the tool front surfaces as well as removing the plastic component of the same.

The invention will be explained in more detail, for example, with reference to the drawings. 1 shows a perspective view of a hollow component according to the invention, for example a gas container; Figure 2 is a cross-section along line 2-2 of Figure 2. 1 ; 2iL.,. j is an exploded rope view of the cross-section shown in FIG. 2; Zig. 4 shows a perspective view of an embodiment of a Xern- = lied of the component; Fif °. one of the rig. 2 corresponding cross section of a somewhat modified embodiment of a hollow component; 6 shows a cross-section of an outer wall according to the invention (7bzl-. Security plate; i'ig. 7 to 18 are schematic representations of a shaping process for a component according to the invention and FIGS. 19 to 30 are schematic representations of a further shaping process for a .. .Bauteil invention for preparing the embodiments of the invention illustrated in Figures 1 to 6 can in copending application, Serial No. 467.819 of June 18, 1965 which is a divisional application filed on November 15, 196o application Serial No. 69.521 However, since the components disclosed here are equipped with a core member and are shown in the form of four thermoplastic films, in contrast to the two films according to the pending application, the modification of the method is illustrated in FIGS. In FIGS. 1 to 5, two embodiments of a hollow component are shown, for example a container which serves as a #, automobile fuel container can. The component has an outer skin 50 and a core member, indicated generally at 52. The core member 52 is formed by two sheets of thermoplastic material that are heat fused along opposing peripheral portions 58. The elements of the base member are best seen in an exploded view of Figure 3, where a shaped top sheet 54 is brought into melt contact with a bottom sheet 56 while the sheets are held at their fusing temperature. The core member thus formed is shown in FIG. 4 and can be formed together with the synthetic resin skin either in a continuous or in a separate operation, as is described below with reference to FIGS. 7 to 3o. It should be noted that the construction of the core member 52 and the outer skin 50 are for illustrative purposes only and that any configuration of the core member or the outer skin can be provided, depending only on the type of product desired and the requirements of the method described. The best in r'ig. The core member 52 shown in FIG. 4 has a flange part 58 on its circumference, which forms the fused connection between the upper foil 54 and the lower foil 56. Between these circumferential steles 5b lie the last arranged files 6ö, which delimit the edges of channels 59. There are internal channels 59, which are formed by further contact surfaces between the foils 54, 56. A number of connecting openings 64 are provided between the channels 59, which enable the exchange of fluid with one another; openings 65 serve for communicating connection through the channel walls 6o: the connection is effected through each peripheral flange part 58 by means of the openings 66 arranged at a distance from one another 56 is provided, as well as a connection between the channels 61 through the channels 7o, which allow an exchange of air between the oils (that is, between the hollow interior of the channels) during the forming process The oppositely arranged files 6ö of the core member delimit oppositely arranged fusion surfaces 72, w which are fused to the inner surfaces of the foils 74, 76 of the outer skin 50 , as is described below. The outer skin 50 is formed in the same way as the member 52, that is, from a synthetic resin film 74 and 76 which can be hot-melted (sealed) at their edges 78 and thus form a channel 75 in which the core member 52 is located. The foils 74; 76 of the skin lie one on top of the other and are fused with oppositely arranged end faces 72 of a core member 52; they thus form an essentially uniform synthetic resin structure. As can be seen, the end faces 72 are separated from one another by the openings 64, so that a corrugated surface is created. In yig. 2 are the fused edges lder: -: hat. @. Ls ordered directly with the fused dmfa.ngteil #) # @ of the l: n member. In the modified lius guide according to 5, the molten circumference = "nrrsi'la.n; 3chpart 58 'of the core is not enough -to the @schmelzunR: Hit = er -, aut. Las component of Fig. 2 results in an et: T ; @. riöciere :: teifi @ t_Ei_t of the finished .3eh # j, lter5. Layers is possible when establishing the a free communication between the channels. desse.n inbringort and @kusbildun: - sform is dependent on the illunction of the _beh = 1-ters.

Zig. 6 represents a self-tra, # - 'encLe Kr = :, ftfa.hrzeut; -. @ Icrierhei-t-3-plate according to the @ # invention. The: smooth ",, is described here in four;,' ei 3e formed and consists of a core member, a-11Te_lieln marked with 1 oo, which is fused with a r = _u1 @@: rhau.t 1 c2, which can be seen that the stiffness can be achieved through use different constructions for the kaiglieder as well as by changing the '`Terr2, crmel.zur_ = J-between the i @ ern4 ° song and the skin changed Urerden.: ü @ =. s shown component consists of four hexagonal 2-e Kan @ Ue 1o4 and a five-cornered canal 1o6. - The pentagonal i; r.ne.1 1o6 shows only one angle point contact; with G. the inner i`1 = surface of the skin at 1o8 and is therefore less rigid =). 1s the hexagonal channels, which touch each other with the 3-turrets. The degree of stiffness of the core can thus be modified at different points, or the stiffness can be modified by using other geometrical shapes. ; cher educations are changed. The amalgamation between de '-, 1 core zoo and the j1aut 1o2 can also be changed by narrowing the area of the core, which is available for amalgamation, e.g. be t by using the Kom~nunik.a.tion4@-öfi'nungen 64, which in the i @ es of 3Eh-ä1_ters 4 = -ezei., @. The. How -can therefore be unbreakable in the critical moment of a ramming impact. In addition, such panels provide me with sufficient resistance to the impact to adequately protect the occupants. : jei lusführungform. The Lrfindunz as a motor vehicle protective plate can be varied the required .3ruch = resistance against call test -, - 11 in order to offer the best possible protection for a guest, such as the shocks and pressures that are normally in the. Operation occur, the component cannot be deformed. The plate therefore retains its structural stability when it is needed in a critical situation. L) is 1t schematically illustrate a process for @ildune? # @ The components according to Zig. 1 ais 6. 7 shows a pair of corresponding core manufacturing tools in the open position to accommodate the preheated, fusible synthetic resin foils. The face of the 'memo tools delimit the shape of the desired i, aernz, song. Fig. 3 vera.nseia.ulicht a heated plastic resin film, 2o2, which is mounted at intervals on a frame means 2o4. The foils were heated to the melting temperature on a jeiz station (not shown) and sag under their own weight, @: e, -ie. 8 emerges. In Fig. 9 the tools have partially closed on forming contact with the foils, and the tool surfaces are subjected to a vacuum in order to adapt the foils to the shape of the tool surfaces. The tools are then completely closed (2g. 1 o), while the effect of the negative pressure on the ferkzeufzflächen is maintained. By closing the tools, certain files of the heated foils are brought into melting contact and form a hollow core, clied clay of the kind described above In the 2nd stage, air can be blown between the foils so that the foil can be held against the tool surfaces while it cools, e.g. through the channels 70 of the fit 4. After the core member has cooled down sufficiently to maintain its structure., the -; tools. <em @@. t: Yig. 11 -opened.: dq-.s completed l, ern_; lied (1'ig. 12) is held in the framework means 204 and to a subsequent (Pig. 16) g achieved. l'ig. 13 to 15 give the first 1'orin "ii # beitsf; 3.nir der hu1 @ enhaut again; this process takes place i c.ichzc: iti_ @ f m7 t deerj fo.rmeri of the core member on a separate one represents, Ier-t :: zeuF ° e 2o8 zum i! 'orriierl äer L-_ut Recording of the thermoplastic 1'olieri s-@eäf=I_n.et sincx. 1: n oi @@. 14th the chermoolastic Jolien 212 zrvi; Jcrien den. ; ier.zevrsflächen recorded and stored in the distance in cleri hulimenmittel 21o. The thermo-acoustic foils 212_ were heated to their fusing temperature on a heating station (not shown). Fig. 15 shows the tools, 7lieder 2od in for forming contact with a.en trieriuopl = Lsti; 3ciien foils 212 partially .esclilossE: nE: r ätellun, -. which has already been described with regard to the; i'or Jens des herugliedes 2o6, at this point a negative pressure is created by the frezos = eti, d.``'.init the heated foils of the 2orm of the 'werkzeu @; fl: .chen = inge -become flat. In 16, the core member 2o6 was broken in and aligned with the outer skin for interlocking. : Va. which was often formed at the same time as the r'orniun. "r of the profile of the outer skin, the core member was also kept at its fusion temperature, should be required. The tools are then shown in fig. 17 fully closed and bring the - on the other hand, overlying edges of the plastic foils into fusion contact with the circumferential parts of the core and the oppositely arranged end faces 72 and the core member into fusion contact with the inner 2 surfaces of the loud. In 2ig. 1d the tools are opened after the finished building has cooled down in order to retain its shape, and the frame can be removed from the frame means and its edge trimmed. From Fig. 18 it can be seen that d @ ii. the circumference of the flange parts of the core and the i. = iu-t were merged with one another to form an essentially homocene wall, similar to de, -. i Jauteil according to 2.

v'i-. 19 to 30 schematically illustrate a standard procedure, which is similar to the procedure described above, except that the core song is formed in an iron special work .ri @ reri from 2iv. 7 to 11 and vr are denoted by c: n-bopreahenden j3ezu4, # sz.trilen. In this -ü.hoeitstadium the core link is abhenomrrre n and zu3> @cut, as in fig. 24 is shown at 2o6 '. Bern; = Lied can now be checked and approved for later verification. r'iir. 25 bis; 3 27 show the shape of the outer skin on the profile of the ', i'lerlzeugfa.chen, which corresponds to FIGS. 13 to 15. 1n firn. 28 the cut core member would be inserted and the oil that bounded the outer skin would be laid. On a separate station (not shown) the herno; lied was again heated to its melting temperature, so that the complete love of the tool - ° emäß fig. 29 the core 2o6 'is fused with the autien skin in the "- !; like tracks as described in connection with Fig. 17. In Fig. 3o the finished structure can be used for the' subsequent cutting out of the 'tools ... aas 19 to 30 can correspond to the embodiment shown in FIG. 2 or FIG it extends between the fused area of the skin; it can also be trimmed according to Fig. 5.

The process described in connection with FIGS. 7 to 18 has the advantages of a continuous process, with the core 266 not needing to be reheated. The ATmachine required for this operation must, however, necessarily be more complex 31s that in connection with i'ig. 1-) ois So described ain, schine. -jies is "(din4-; t, ciaß two pressing means to r @ leichzeiti = _ ,; en 1i'or riunf- de ,: Kernk =; liedes and äer -laut required:, find, and dn.ß with zf. i tlicher .Abs timriiun @ r and other iy.mittel A: ei.works wer @ deri Das in connection with .. 1y ois 3o besc'rir ° iet) ene ierf 'rir ° E, ri only requires a few: eat, because de .eri zeu- ° r iijr - i F @ separate lengths of the, h one and a er iia: ut: iui = - * e.:@ecri'ie it can be. Auljerdeni let sicn (ile kernels 1_eicti .t: et; rc, rir; r, check for irregularities @ igi, _eiten before the end @@: Ulti-e oriovorgang; takes place.

The procedure and part described here can be eni; r) c "n« ie-ii be, youiD; the fer ti e component is essentially a'rE: = i_ of voltages and .iie ierechmelzungsfl_iic'cien have the corpse Irish i'esti <-ness like the ur: at? rün @@ licüeri @ 'oi_i er. .for earlier diamond parts, where local Lrhit <@ ur @: or. Bonding not; r! Ended, occurred structurally :.- te , @ n- @ nr @ @ A @ A @ - --districts in -jauteil on; uie ririlebverbinctung @: ischen cJ.en ments couldn’t be sufficiently mastered .., ground uno v-r n »r, in rare cases completely. In addition, d. = @ Ri.i@ff following adhesive connections are pinging Really more expensive can be controlled in an essentially continuous manner : _working difficult to carry out.

The r @ er link can consist of a single i_uns-th5: rz film with oppositely arranged 1W1-points for merging finite the opposing ones The outer skin is made of foils.

Claims (1)

no,: che: i. üoi, 1.er lurlst, 3toffbiuteil,: r # e,. denotes (for a Pa "ir etit -e =, cin @ rf: uses anoruneter i # unststof'-foils (74, 76) izrrct: hollow kutiststöf. -t'-Kerni, -lied (° @ <), which is arranged between. aet_ Ul @ lden Polieti (74, `l6) an, ## @ and lie -, end i # eil-e ('(2 ) @ .uf shows, n ie with d en Jdlien (74, (b) ver: 3cilmolzen: iinc3,; _., x part n I claim 1, thereby rc, i: etir. zE, icr @ ne t, d 4i . das .e: # 1 @ _- li (-: d (52) Umfc.n.steile (5 @) @ ufwei-.3t, r -. '. ie with the LE @ .. ic.r #: nt "rearenge sets" in # -reordered lolic "t: i 7`l, 7n) ver -; @ C`121101GeC :. = a.tld. @. ::, -". part tl: @. c @ h Claim 2, de-.äurcli ..- @ c: kenl_Zc.iclinet, da ': die @rtif. = _ N: - steep (5ö) of the i: erri.-_ 1_iedes (52) between fused ümf ° _itiz °:;: -. Anten (V,) der ent @ reetrre :: rtzt arranged ic @ li_etl (1 :, 'l0);2ni; eorärlet are and one in general lo:; to, # etie: _iLit.ststofiwand be.Yretizen. r. jt @@ u @ eil to one of the previous @ e: lien: xer Ansnrilcrle, d-tby d; z- d-es itern.; lieä (52) c durcii two art, LL l! l_r'oietl (54, 56) is educated, aie at voräe-, gti: @: #: iten bright witheinfinaer merged: #ind. @: _; - :are. b. -s <i.uteil after cx; ::, a :, t: ie #ntc :, the answer s # neet #, 1 #=t=@_eor_.neten to.: 1. @ ä_durefl 2 f eile eile (72) riit a vore Eiaa @ '_ tiu. ^ .er 'eiceri: zeiolinet, d'-i:, - die? r_'3.rlt!'! (# 7-`) @ ei ° horrified .atigeo- @ dneten Folier_; `I @ t, 7L) ver: = ch: rolzen and delimit a dis core link (7r_ ') containing the ends i @ rnal (75). B. Verf @ j (74, 76) at their fusion temperature in the distance between a pair: fern zeugfl4.clieri (2o8), shifting the -; Jerizeugflä, chen (2o8) in formative @ se-ri: @ hr-ungrrnit - xr @ t. gegen @; e .; In order to adapt the foils (74, '76) to the shape of the tool surfaces (To), a plastic core member (52) rriit ent @? E @ enf-et. Arranged parts ('l2) between the Shaped opposite foils (74, 70, closing of the surfaces (2od), around certain parts of the opposite foils (74, 76) in fusion with at least parts of these Correspondingly to bring the ngeoraneten parts ('72) aes 1.ern@'liedes (52) , cooling the opposite r'olieri (7419 7 @) while maintaining the -er'L. @ ir @ ung the #regeniiberlie @zencLen foils with the "eritzeu4, fläctien (2o8) and irenrlen der.: Erkzeu4: llächen (2o8) as well as removing the, .uns @ t s-Loffb @ tutei_ls (52) from the @ elu en. _ y. Method according to claim 8, daau.rch :: clennzei_cE: .ne t that da :; Kern'- ° lied (52) is formed by molding heated -, - p tnerMoplastic foil material to produce the ent: @egen @ -, c: etzt on, 7_eoraneten -'eile (72). 1o. Process according to claim y, characterized in that the core member (52) is formed by means of the following process steps: heating a pair of plastic films (54, 56) to their fusion temperature, inserting the heat the foils at their fusing temperature at a distance from one another between a pair of the tool surfaces (2oo), because of the mold surfaces (2oo) in forming contact: r with the foils (5+, 5b), removal of a negative pressure through the: ierkzeugtläche (2oo) _, in order to adapt the foils (54, 5'b) to the shape of the gerkzeugfläche @ 2oo), sleep .- "en ner -: # 'orrnfliii-chen (2oo), around certain parts of the resulting r' to bring the foils (54, 56) into fusion contact with one another. Cooling of the foils (54, 56) while maintaining the contact: - the foils (54, 56) with cbn tool surfaces (2oo) and separating the tool surfaces (2oo ) and removing the hollow core member (52) therefrom