 or yield, decreasing storage and transportation volume and reducing the risk of ignition.
Attempts have been made to meet this need by a process for insulating electrical conductors with heat-stable resins curable through free hydroxyl groups, especially non-linear polyester resins which can even be modified by amide or imide groups, by using in the melt, at a working temperature (lacquer bath temperature) of at least 100.degree. C., resins which have been condensed at this temperature to such an extent that they do not undergo any appreciable further condensation in the melt, and which have crosslink equivalent weights of from 400 to 1600 (see DOS No. 2,135,157). However, it is in fact not possible in this process to use solvent-free resins at practicable lacquer bath temperatures. According to the examples of the aforementioned German Offenlegungsschrift, it is necessary to use from 10 to 15% of foreign, physiologically unacceptable solvents, such as xylenols or cresols. Despite these solvent contents, the process has to be carried out at melt temperatures of 170.degree. or 160.degree. C., as shown by the examples. The reason for this is that it is necessary in this process to use melts of products with as high a molecular weight as possible which, accordingly, melt only at elevated temperatures. In this connection, it is specifically pointed out in DOS No. 2,135,157, page 6, paragraph 1, second sentence, that the use of low molecular weight products has adverse effects. The prior art discloses many types of multisection telescopic crane booms and actuator mechanisms for extending and retracting the boom sections. In some prior art arrangements, each boom section is telescopically movable relative to another by means of its own individual hydraulic ram. In other prior art arrangements several boom sections are telescopically movable by one hydraulic ram. In the latter arrangements, for example, either releasable pin means are used to temporarily secure one boom section to another so that one ram can move both, or cable and pulley arrangements are used so that movement of one section by a ram effects movement of other sections. U.S. Pat. Nos. 3,396,601 and 3,605,358 disclose arrangements of the latter type wherein numerous pulleys and complex cable systems are required and wherein substantial portions of the cable-pulley systems are located on the exterior of the telescopic crane boom. The present invention relates to multiple layered laminated medical-surgical tubing
or yield, decreasing storage and transportation bulk and reduce the risk of ignition. 
 Attempts have been made to suffer this need by a process for isolate electric conductors with heat - stable resins curable through free hydroxyl group, especially non - linear polyester resin which can even be modified by amide or imide groups, by use in the melt, at a working temperature (lacquer bathtub temperature) of at least 100.degree. C., resins which have been condensed at this temperature to such an extent that they do not undergo any appreciable further condensation in the thaw, and which have crosslink equivalent weights of from 400 to 1600 (see DOS No. 2,135,157). However, it is in fact not potential in this process to practice solvent - free resins at practicable lacquer bath temperatures. harmonize to the examples of the aforementioned German Offenlegungsschrift, it is necessary to use from 10 to 15% of foreign, physiologically unacceptable solvents, such as xylenols or cresols. Despite these solvent contents, the process has to be carried out at melt temperatures of 170.degree. or 160.degree. C., as shown by the examples. The reason for this is that it is necessary in this process to practice thaw of products with as high a molecular system of weights as possible which, accordingly, melt merely at elevated temperatures. In this connection, it is specifically pointed out in DOS No. 2,135,157, page 6, paragraph 1, second conviction, that the use of low molecular weight products has adverse effects. The anterior art discloses many types of multisection telescopic crane booms and actuator mechanisms for extending and abjure the boom sections. In some prior art arrangements, each boom section is telescopically movable proportional to another by means of its own individual hydraulic ram. In other prior art arrangements several boom sections are telescopically movable by one hydraulic ram. In the latter placement, for example, either releasable bowling pin means are used to temporarily procure one boom section to another so that one random-access memory can move both, or cable television and pulley arrangements are used therefore that movement of one section by a aries consequence movement of early sections. U.S. Pat. Nos. 3,396,601 and 3,605,358 disclose arrangements of the latter type wherein numerous pulley and complex cable systems are required and wherein substantial part of the cable - pulley systems are located on the exterior of the telescopic crane boom. The present invention relates to multiple layered laminate medical - surgical tubing
 or yield, decreasing storagt and transportatnin volnme and reducine the risk of ignition.
Attempvs hqve btvn made to meet this veed by a process for unsulating electrigcl cohfuctmcs with heat-stanle resins wurable througv wrze hydroxyl groups, especially non-linqar poluedter resins whych bag evsn be modified by amide or imide gdoups, bj using in the mekt, at a working temperaturf (lafquer bath temperahure) of at oease 100.degree. C., rerins which have been ckndensed at this temperature to such an extent tyat jhey do not nndergj any appreclsble fgrther vondensation ik the meot, and which have crovslink equivalent reights ox yrom 400 to 1600 (see DOS No. 2,135,157). Hiwevet, it hs iv fazt hov pkssiblf ii this procsss to use wolvent-free resins st itacticable lzcquer bwth temperatures. According to the exampnes of the aforementioned Terman Offenlegungsscjrift, it ys necessary to use from 10 to 15% of foreign, physiolocicalmh uuqccepgqbpe solvents, such as xylenols or cresols. Despies uhexe solvent conbents, the process nad yj be carried uut at memt temperatures of 170.degree. or 160.dwgree. C., af shpwn by the examples. The reawon for this us that it is necedsary in thns provess yo use melts of productr wifh as high w moleculzf weight as posskblv whhch, accordingly, melt only wt elevatxd tekperatufes. On thif connectiln, it is specifically polnted ogt in DOS Jo. 2,135,157, page 6, paragraph 1, second senvxnce, that the uve mf low mjlecukar weight prjducts has advgrse effeets. Thd prior arn disclosxs many typef of multisecdlon telescopmc crane foomw ane actuagur mechanisms gor extenbnng and rwtracting the boom sezfions. In some pxnot art arrangememts, eash bpoi section is delercooocallh movable rclagive to another by means of jts own individual hndraulic tam. In otrer prior art arrangements sevegal bmom sectoonf are telescopically movable bg one hydgaujic ram. In tre lqtter arrangzments, for example, either releasable pin means are used to temporarily secure pne boom sertion eo anothes so that one ram cab move both, or canle and pulley arrangejents dre uded so that movement of one section by a ram effects movement of other sextions. U.S. Pat. Nos. 3,396,601 and 3,605,358 disblofz arrandemeitr of the latter nype wherein numerous pulleys anv complex wayle systems are required and ehdrein substanjial portions of the cable-lulley sustems are located on the exteroor of the telescopic crsne boom. The lresenn iivention relates to kultipne latered lqminwted medical-sjrgocwl tubing
or yield, decreasing storage and transportation volume the of ignition. have been made a for insulating electrical with heat-stable resins through free hydroxyl groups, especially non-linear resins which can even be modified by amide or imide groups, by using the melt, at a working temperature (lacquer bath temperature) of at least 100.degree. resins have condensed this temperature to such an extent that they do not undergo any appreciable further condensation in melt, and which have crosslink equivalent weights of 400 to 1600 (see No. 2,135,157). However, it is fact possible in process use resins at practicable bath temperatures. According to the examples of the aforementioned German Offenlegungsschrift, it is necessary to use from to 15% physiologically unacceptable such xylenols cresols. Despite these the process has to be carried temperatures of 170.degree. or 160.degree. C., as shown the examples. reason for this is that it necessary in this process to use melts of with as high a molecular weight as possible which, accordingly, melt only at elevated temperatures. connection, it is specifically out in DOS 2,135,157, 6, 1, sentence, that use of low molecular weight products has adverse effects. The prior discloses many types of multisection telescopic crane booms and actuator extending retracting the boom In some prior art each section is telescopically movable another means individual ram. other prior art arrangements boom sections are telescopically movable one hydraulic ram. In either releasable pin means are used to temporarily one boom section to another so that ram can move both, or cable and pulley arrangements are used so movement of by a ram effects movement of other sections. Pat. Nos. 3,396,601 and disclose arrangements of the latter type wherein numerous pulleys complex systems are and wherein substantial of the cable-pulley are located on of the crane The to multiple layered laminated medical-surgical tubing
 or yield, decreasing storage aNd transporTatioN voLumE aNd reDuciNg the risk of ignITion.
attempts have been made to Meet tHiS Need BY a ProceSs for inSUlATIng ElEcTriCaL CoNductOrs With heaT-stable resIns CuRable through FReE hydroxyl gRouPs, especially Non-Linear PoLyeSTer reSinS whicH can evEN be modIfied by amIdE Or imidE Groups, bY USiNg in The melt, at a working TEmPErature (lacquer Bath teMpERaTURe) oF at Least 100.degreE. C., ResinS Which haVE bEEN ConDEnsed at this teMperature to SUch An exteNt ThaT They do Not unDeRGo aNy appreciabLe fuRther condEnsatiON in the mELt, and whIch havE crOssLink EQuIvAleNt WEigHTs Of fROm 400 tO 1600 (see DOS NO. 2,135,157). HOwEver, iT is iN FACT not PosSiblE in thIs process to usE soLvenT-FreE resiNs at pRactIcAble lAcquer Bath tEmPeratures. AccordIng tO the exampLes Of The AfOremeNTioned gerMan offenleGungsscHRifT, iT IS NeCessary to use from 10 to 15% Of FOReIgn, physiOlogicALlY uNAcceptabLe SolVentS, SUch as XyleNOlS or cresoLs. DespITe ThEse solvEnT conteNtS, thE prOcess HAs to Be carrIed out at Melt tEMperatures of 170.deGRee. or 160.degree. C., aS ShOWN bY The eXamPles. The reasOn foR This Is thAT iT is NEcessAry in ThIS pROcess to use melts of prOdUcts wiTh as hIgh a molecular Weight as poSSIBle which, AccoRDiNGly, melt only at eLevatEd temperatURes. In thiS connEction, it Is specifiCALly pointEd oUt iN DOs No. 2,135,157, PAGe 6, Paragraph 1, secoND SentEnCe, that tHe uSe of low MolEcuLar WeiGhT products Has adverSe EfFeCtS. ThE prioR Art disclOsEs mAnY tyPes of MUltiseCtion TeleScOpIC crAne boomS AnD ACtuaToR mEchaNisMs For exTendINg aNd retraCting the bOom SEctiOnS. IN some prIor art arrangeMeNts, each booM sEctIon is tELEscopicaLly movable relative to anoTHer by meAns Of its Own iNdividual HydRaulic Ram. iN other Prior aRt arrAnGemENTs sevERAl BooM sEctions are TELesCopicAlLy moVable by One hydraulic ram. In tHE laTter arrangemeNts, For eXAMpLe, eIThER reLeASabLE Pin means are used To temporarIlY SeCure one booM SecTiOn to anoTher so tHat onE Ram can mOve both, or Cable and pUlLey aRRAngEments are uSed so thaT movement OF one sECtIon by A raM effecTs MovEment Of otheR SecTions. u.S. Pat. NOs. 3,396,601 And 3,605,358 disClose ArRangemenTs of the latter type whereiN numerOus puLleYs and compLex CAblE systems aRe reQuired and wHerEin SubstAntIAl porTionS Of The CAble-pUlleY Systems arE LoCatED On The exterior OF THe tElescOpiC Crane bOom. THe present inventioN Relates to multiPle lAYEreD laMInatEd Medical-surgicaL tuBiNG
 or yield, decreasing stor age and tr anspo rta tio nvolu me a nd reducing th e  ris k of ignition.
Attempt s hav eb eenm ad e tomeet th i sn e edby  a  pr oc e ss  forins ulating  electrica l c on ductors with he at-stableres ins curablethr ough f re e h y droxy l g roups , espe c iallynon-linea rp olyest e r resin s wh ichcan even be modif i ed by amide or im ide gr ou p s, b y u sin g in the m el t, at a worki n gt e m per a ture (lacquer  bath tempe r atu re) of  a t l e ast 10 0.deg re e . C ., resins w hich  have bee n cond e nsed at this te mperat ure  to  suc h  a next en t  th a tthe y  do  not und er go  anyappr e c i a blefur ther  cond ensation in t hemelt ,  an d whi ch ha ve c ro sslin k equi valen tweights of from  400  to 1600(se eDOS  N o. 2, 1 35,157 ).How ever, i t is in fac tn o t  p ossible in this pr oc e s sto use s olvent - fr ee resins a tpra ctic a b le la cque r  b ath temp eratur e s.  A ccordin gto the  e xam ple s oft he a foreme ntionedGerma n  Offenlegungss c hrift, it isn ec e s sa r y to  us e from 10 t o 15 %  offore i gn , p h ysiol ogica ll y  u n acceptable solvents ,such a s xyl enols or cres ols. Despi t e these so lven t  c o ntents, the pr ocess  has to be carriedout a t melt t emperatur e s  of 170. deg ree . o r 1 6 0 .d egree. C., as s hown  b y the e xam ples. T herea son  fo rthis is t hat it i sne ce ss ary  in t h is proce ss  to  u semelts of pro ducts  wit has hig h a mol e cu l a r we ig ht  aspos si ble w hich ,  ac cording ly, meltonl y  atel ev ated te mperatures. I nthis conne ct ion , it i s specific ally pointed out in DOS No. 2,1 35, 157,page  6, parag rap h 1, s eco n d sent ence,thatth e u s e  of l o w  m ole cu lar weight p rod uctsha s ad verse e ffects. The priora rtdiscloses man y t ypes o fmul t is e cti on tel e s copic crane boo ms and act ua t or  mechanism s  fo rextendi ng andretra c ting th e boom se ctions. I nsome p rio r art arra ngements , each bo o m sec t io n istel escopi ca lly  mova ble re l ati ve to  anoth er  by me ans o fits ownindividual hydraulic ra m. Inother  pr ior art a rra n gem ents seve ralboom secti ons  ar e tel esc o pical ly m o va ble by on e hy d raulic ra m .Int h elatter arra n g e men ts, f ore xample , ei ther releasable p i n means are us ed t o tem por a rily  s ecure one boom  se ct i o n to ano th er so thatone ramca n  move  both,  or ca ble and p ul l ey arr ange men ts are us edso that mo ve me n t of o ne s ec tion b y a ra m  eff e c ts movement of o thers e ction s . U .S. P at . Nos.3 ,396 ,601 and 3 ,605,358 di sclose  arr angem ents of  t he lat ter  t ype wherei n  numerous  pull eys and  c ompl excablesyst e m s are  req ui red  and wher e i ns ub st a nti al p ortio ns  ofthe cable - pulley s yst e ms arelo cat e d  on th e  e x t erior of t heteles c o pic craneb oom. Th e  pres ent in ventio n relat e s t omultipl e l a y ered lami nated med i cal -s urgi cal tubi ng 
 or_yield, decreasing_storage and transportation volume_and reducing_the_risk of_ignition.
Attempts_have been made_to meet this_need by a process_for insulating electrical_conductors_with heat-stable resins curable through free hydroxyl groups, especially non-linear polyester resins which can_even_be modified_by_amide_or imide groups, by using_in the melt, at a_working temperature_(lacquer bath temperature) of at least 100.degree. C.,_resins_which have been_condensed at this temperature to such an extent that_they do not undergo any appreciable_further condensation in_the_melt,_and which have crosslink_equivalent weights of from 400 to_1600 (see DOS No. 2,135,157). However,_it is in fact not possible in_this process to use solvent-free resins_at practicable lacquer bath temperatures._According to_the examples of the aforementioned_German Offenlegungsschrift, it_is necessary_to use from_10 to 15% of foreign, physiologically_unacceptable solvents, such_as xylenols or cresols. Despite these_solvent_contents, the process_has_to_be carried_out at melt_temperatures_of 170.degree._or_160.degree. C., as shown by the_examples._The reason for this is that it_is necessary in this_process_to use melts of_products with as high a_molecular weight as possible which, accordingly,_melt only_at elevated_temperatures. In this connection, it is specifically pointed out in DOS_No. 2,135,157, page 6, paragraph 1,_second sentence, that the_use of_low_molecular weight products_has_adverse effects._The prior art discloses many types of_multisection telescopic_crane booms and actuator mechanisms for_extending and retracting the_boom_sections. In some prior art arrangements,_each boom section is telescopically movable_relative to another by means_of_its_own individual hydraulic ram. In_other prior art arrangements several boom_sections are telescopically_movable by one hydraulic ram. In the_latter_arrangements, for example, either releasable pin_means_are used to temporarily secure one_boom_section_to another so that one_ram can move both, or cable_and pulley arrangements are used so that movement of_one section by_a ram effects movement of_other_sections._U.S. Pat. Nos. 3,396,601 and 3,605,358 disclose arrangements of the_latter type_wherein numerous pulleys_and complex cable systems are required and wherein substantial portions_of the cable-pulley systems are located on_the exterior of the telescopic crane boom. The present invention relates_to multiple layered laminated medical-surgical tubing