HSQY
Urupapuro rwa Polystyrene
Umweru, Umukara, Ibara, Byahinduwe
0.2 - 6mm, Yahinduwe
| Iboneka: | |
|---|---|
Urupapuro rwa Polystyrene
HSQY umukara HIPS urupapuro ihuza ubudahangarwa bw'inkurikizi, gukomera, ubushyuhe bworoshye n'isura y'umukara idasobanutse neza yo gupakira, kwerekana, ibice by'ibikoresho, ibifuniko n'ibikoresho by'inganda.
Polystyrene Impact High, ikunze kuvugwa mu magambo ahinnye nka HIPS , ni polystyrene yahinduwe na rubber yagenewe gutanga ubukomere burenze GPPS busanzwe mu gihe ikomeza gukora neza, gukata, gucapa no gukora.
Uru rupapuro rw'ibicuruzwa rwibanda ku mibare ikunze gusabwa ya mm 1, mm 2, mm 3 na mm 5 y'umukara HIPS urupapuro . Ingano ya polystyrene ya HSQY urupapuro ifite ubugari bwa mm 0.2 kugeza kuri mm 6, ubugari bugera kuri mm 1600 n'amabara y'umweru, umukara cyangwa akozwe ku giti cye.
Urupapuro rwa polystyrene rw'umukara HIPS
HI y'umukara Urupapuro rwa PS yo gukoresha thermoforming
HI y'umukara Urupapuro rwa PS ku bice by'inganda
| by'umutungo | Ibisobanuro |
|---|---|
| Igicuruzwa | Ibara ry'umukara rifite ingaruka nyinshi rya polystyrene / HI y'umukara Urupapuro rwa PS |
| Ibikoresho | Polystyrene ifite ingaruka nyinshi ( HIPS / PS ) |
| Ubunini bugaragara | mm 1, mm 2, mm 3, mm 5 |
| Ingano y'ubunini iboneka | Hafi 0.2mm - 6mm, Ifite imiterere yihariye |
| Ubugari ntarengwa | Kugeza kuri mm 1600 |
| Ibara | Amabara y'umukara; umweru n'amabara yihariye araboneka mu bwoko bwagutse bw'ibicuruzwa |
| Isura | Umukara utagira ishusho n'inyuma ufite ubuso buroroshye |
| Gutunganya | Gutunganya ikirere, gukora imashini ikoresha umwuka ushyushye, gukata icyuma gishyushye, gukoresha CNC, gukata, gucukura, gukoresha inzira, gucapa, gusiga irangi, guhuza no gusiga amavuta bitewe n'urwego |
| Porogaramu zisanzwe | Gupakira Amasahani , ibyerekanwa bya POP, ibyapa, ibipfukisho by'ibikoresho, ibice by'ibikoresho, ibyuma bikonjesha, amazu, ibishushanyo mbonera n'ibice byakozwe mu nganda |
Icy'ingenzi: Umukara usanzwe HIPS ntabwo ukoresha amashanyarazi mu buryo bwikora, ntushobora kwangiza ikirere cyangwa ngo ubeho neza. Niba porogaramu yawe isaba ubushobozi bwo guhangana n'ubuso cyangwa imikorere ya static-control, garagaza urwego rw'amashanyarazi rukenewe n'uburyo bwo gupima mbere yo guhitamo ibikoresho.
Umukara HIPS urupapuro ni Polystyrene idafite ibara ryimbitse urupapuro ikorwa mu ibara ry'umukara. Igikoresho cy'ibanze HIPS kirimo icyiciro cyahinduwe na rubber gitanga ubukana buruta Polystyrene isanzwe ikoreshwa muri rusange.
Ibikoresho bikunze gutoranywa mu bice bya thermoformed, ibifuniko, Amasahani , ibyerekanwa n'ibice byakozwe aho ubwisanzure budakenewe kandi isura yijimye idahindagurika ari yo ikunda.
Umukara HIPS ushobora kandi gufasha guhisha ibice by'imbere, imiterere y'inyuma cyangwa ibicuruzwa inyuma y'urumuri, nubwo ubushobozi bwo kudahita cyangwa imikorere yo gukumira urumuri bigomba kwemezwa aho ibi ari ngombwa cyane mu bya tekiniki.
Ubunini bugira ingaruka ku bugari urupapuro , imyitwarire yo gukora, ubugari bw'urukuta rurangiye, uburemere n'uburyo bwo gukora. Igipimo gikwiye kigomba gutoranywa hakurikijwe igice cyarangiye aho guhitamo ubunini bushingiye ku giciro gusa.
| Ubunini | Rusange Icyerekezo cyo guhitamo | Ikoreshwa risanzwe |
|---|---|---|
| Umukara wa 1mm HIPS | Yoroheje urupapuro ifite ubushobozi bwo gukora no gukora ibintu neza | Gupakira Amasahani , amatara, ibifuniko byoroheje n'ibice byakozwemo |
| Umukara wa 2mm HIPS | Ubushobozi bwo kuringaniza bwo gukora thermoforming | Amazu, ibice by'ibikoresho, ibyapa, ibyerekanwa n'ibipfukisho by'inganda |
| Umukara wa 3mm HIPS | Ubukomere bwinshi ku mapane manini n'ibice byakozwe | Ibikoresho, ibifuniko by'ibikoresho, ibyerekanwa, ibishushanyo mbonera n'ibice biremereye |
| Umukara wa 5mm HIPS | Ikomeye cyane urupapuro ku bice byakozwe bisaba gukomera gukomeye kurushaho urupapuro | Ibyuma by'inganda, ibifuniko, ibishushanyo binini n'ibice byatoranijwe byakozwe |
Ibi ni icyerekezo rusange cyo guhitamo. Ingano y'ibice, uburebure budashyigikiwe, uburebure bw'ibishushanyo, uburyo bwo gufatanya n'ibisabwa mu gutera bishobora guhindura ubugari bukwiye.
Umukara wa mm 1 HIPS utanga igipimo cyo gutangira cyoroheje cyo gupima ubushyuhe, gupakira Amasahani , kwerekana no gukora ibice bito.
Mu gihe cyo gukora cyane, 1mm urupapuro ishobora kuba nto cyane ku nkuta zo ku mpande no mu mfuruka, bityo ubugari bw'urukuta bugomba kugenzurwa ku gice nyacyo.
Umukara wa mm 2 HIPS utanga uburyo bwiza bwo kuringaniza ubukana no gutunganya ibintu biciriritse byakozwe mu buryo bwa thermoform cyangwa ibyakozwe.
Ishobora kwitabwaho ku mabaraza yo kwerekana, ibifuniko by'ibikoresho, ibice by'ibikoresho, ibimenyetso, aho bifungira n'ibindi bisaba gukomera kurusha icyuma gipima HIPS .
Umukara wa mm 3 { urupapuro HIPS utuma habaho gukomera gukomeye kandi ushobora kuba ingirakamaro ku bice binini byo kwerekana, ibifuniko, imitako, amapaneri yakozwe n'ibishushanyo mbonera.
Aho 3mm urupapuro imeze nk'ingufu, imiterere y'ibumba n'ubujyakuzimu bw'ibumba bigomba kwitabwaho kuko ubugari bw'urukuta buzatandukana mu gice cyarangiye.
Umukara wa 5mm HIPS ni uburebure bungana na urupapuro buri mu bwoko bwa HSQY buri hagati ya 0.2-6mm kandi bukwiriye cyane ku bikoresho byakozwe, ibifuniko, ibishushanyo mbonera n'ibice by'inganda bisaba gukomera cyane.
Ku mapane manini, ibisabwa mu byuma bigomba gusuzumwa hakurikijwe igihe kidashyigikiwe, imiterere y’aho bihambira, ubushyuhe bw’imikorere n’imitwaro iteganijwe aho kwishingikiriza ku bunini bwonyine.
Ubudahangarwa bw'inkurikizi bwarushijeho kwiyongera: Guhindura rubber bituma HIPS ikomera kurusha GPPS isanzwe.
Isura y'umukara idasobanutse: Ikwiriye gukoreshwa aho ubwisanzure budasaba.
Uburyo bwiza bwo gushyuha: Ingano zikwiye za HIPS zishobora guhindurwamo ifu cyangwa zigahindurwamo ibice bitatu.
Yoroheje kandi ikomeye: HIPS itanga ubukana bw'ingirakamaro nta buremere bukabije bw'ibice byayo.
Gukora byoroshye: Impapuro zishobora gucibwa, gucukurwa, gucibwa, gucibwa no gucukurwa hakoreshejwe imashini ya CNC hakoreshejwe uburyo bukwiye.
Ubuso bworoshye: Bikwiriye gukoreshwa mu gucapa, gusiga amarangi, gushyiramo ibirango no gushyiramo lamination.
Ingano nini: Ingano rusange ya HSQY igizwe na mm 0.2 kugeza kuri mm 6.
Ibara ry'umukara ryonyine ntirisobanura ko HIPS urupapuro iyobora amashanyarazi, irwanya imihindagurikire cyangwa ihindagurika. Umukara usanzwe HIPS n'uwahinduwe n'amashanyarazi HIPS ni urwego rw'ibikoresho bitandukanye.
| Intego | nyamukuru y'icyiciro |
|---|---|
| Umukara usanzwe HIPS | Guhindura ikirere, ibifuniko, ibyerekanwa, ibice by'ibikoresho n'ikoreshwa rusange mu nganda |
| Anti-Statique HIPS | Porogaramu zisaba gukwirakwiza amashanyarazi mu buryo buhamye hakurikijwe urwego rw'imikorere y'amashanyarazi rwagenwe |
| Ikoresha amashanyarazi HIPS | Porogaramu zihariye zo gupakira no gutunganya ESD zisaba imikorere ihamye yo gutwara ibintu |
Ku bijyanye no gupakira ibikoresho by'ikoranabuhanga, tanga ubushobozi bwo guhangana n'ubuso bukenewe, uburyo bwo gupima n'uburyo bwo gukoresha Isahani . Ntugasimbuze HIPS y'umukara isanzwe kuko gusa ifite ibara rigaragara nk'iry'ibikoresho byo mu rwego rwa ESD.
Gukoresha thermoforming ni imwe mu mikoreshereze y'ingenzi ya HIPS . urupapuro ishyushya kugeza igihe ishoboye guhindurwa neza hanyuma igakorwa ku ibumba hakoreshejwe imashini ikoresha umwuka, igitutu cyangwa ubufasha bwa mekanike.
Umukara HIPS ushobora gukoreshwa kuri Amasahani , udupfundikizo, ibice by'ibikoresho, amatara n'ibindi bice by'impande eshatu aho hakenewe irangi ry'umukara ritagaragara.
| Ikintu | Gikenewe Gusuzuma |
|---|---|
| Ubunini bw'itangiriro | Ibikoresho biboneka mbere yo kurambura |
| Ubushyuhe bungana | Ishyigikira imiterere ihamye n'isura y'ubuso |
| Gushushanya Ubujyakuzimu | Umwobo munini ushobora kugabanya ubugari bw'inkuta zo mu gace |
| Jometri y'ibimera | Imfuruka, imbavu n'imiterere y'aho ibintu biherereye bigira ingaruka ku ikwirakwizwa ry'ibikoresho |
| Ubunini bw'urukuta rwarangiye | Ahantu hakomeye hagomba gupimwa nyuma yo kurema |
Umukara HIPS ushobora guhindurwamo Amasahani , ibikoresho byo gushyiramo, ibyo gupfunyikamo ibice n'ibyo gupfunyikamo birinda aho isura idasobanutse neza no kwirinda ingaruka ari ingirakamaro.
Abagura ibipfunyika bagomba kugaragaza uburebure bw'ibishushanyo, ingano Isahani , ubushobozi bwo gupakira ibintu, ubukana busabwa, uburemere bw'ibicuruzwa n'ibisabwa byose by'amashanyarazi cyangwa amategeko mbere yo guhitamo urwego.
Gukoresha ibiryo, imiti, imiti n'ibijyanye na ESD bisaba amanota n'inyandiko byihariye. Umukara usanzwe HIPS ntugomba gufatwa nk'aho ukwiriye gukoreshwa muri ubwo buryo.
HIPS ikunze gufatwa nk'iy'ibikoresho byo mu nzu, ibifuniko, imitako, Amasahani n'ibice by'imbere kuko amanota akwiye atanga uburinganire bufatika mu gukora, gukomera no gukomera.
Ku bijyanye n'ikoreshwa ry'igikoresho, garagaza ubushyuhe bw'imikorere, uburyo gikoreshwa n'imiti cyangwa isabune, ibisabwa ku ngaruka, uko ubuso bugaragara n'ubujyakuzimu bw'imiterere mbere yo kwemezwa n'ibikoresho.
Umukara HIPS ushobora gukorwa cyangwa guhindurwamo uduce tutari tw’imiterere, ibifuniko by’ibikoresho, ibipande byo kurinda n’ibipfunyika aho bikenewe uburemere buke n’isura y’umukara ihoraho.
Ubunini bukenewe buterwa n'ingano y'ibice, uburebure budashyigikiwe, uburyo bwo gufunga, imiterere y'imikorere n'imizigo ya mekanike.
Umukara HIPS utanga igikoresho cy'ingirakamaro cyo kwerekana amashusho ya POP, amabaraza y'imurikagurisha, amashusho acuruzwa, ibimenyetso n'ibice byerekana amashusho.
Ku mashusho yacapwe, itandukaniro riri hagati y’umukara w’ibanze urupapuro n’uw’icapiro rigomba kwitabwaho mu gihe cyo gukora ibihangano. Gufata wino biterwa n’imiterere y’ubuso, ubutabire bw’iwino n’uburyo ikoreshwa mu kuyitunganya.
Ubuso bukwiye bwa HIPS bushobora gucapwa mu buryo bwa elegitoroniki, gushushanywa mu buryo bw'ikoranabuhanga, gusigwa irangi, gushyirwaho ikimenyetso cyangwa gusigwaho ibirango n'imitako.
Igeragezwa ry’umusaruro rigomba kwemeza ko wino cyangwa irangi bifatanye hakoreshejwe urwego rw’umukara nyarwo HIPS . Iyo icapiro risaba gutunganya ubuso bugenwe, shyiramo ibyo bisabwa mu bipimo byo kugura.
Umukara HIPS ushobora gucibwa, gutoborwa, gucibwa mu nzira, gucibwa mu cyuma no gucukurwa hakoreshejwe imashini ya CNC hakoreshejwe ibikoresho bya pulasitiki bikwiye hamwe n'uburyo bwo gutunganya.
| Uburyo | busanzwe bwo gukoresha |
|---|---|
| Gukata | Udupapuro, ibyapa, ibifuniko n'ibice bidafitemo umwanya |
| Gukata Die | Ibice bishya bikozwe mu buryo bwo gusubiramo hamwe n'ibice bito urupapuro |
| Uburyo bwo gukoresha CNC | Imiterere igoye, amapaneli n'ibice by'icyitegererezo |
| Gucukura | Gushyiraho imyobo n'amateraniro yakozwe |
| Guhindura ikirere | Amasahani, imitako, imiringoti n'ibifuniko |
| Gucapa / Gushushanya | Ibyerekanwa, amashusho n'ibice by'imitako |
| Igipimo cy'Ihitamo | ry'Umukara HIPS | ABS y'Umukara |
|---|---|---|
| Aho nyamukuru iherereye | Ibice byo gushyushya no gukora ibikoresho byakozwe mu buryo buhendutse | Ubwubatsi bwa plastiki kugira ngo bukoreshwe mu buryo bugoye cyane |
| Imikoreshereze Isanzwe | Gupakira, kwerekana, ibice by'ibikoresho n'ibipfundikizo | Amazu y'inganda, ibice by'imodoka n'ibice biramba |
| Guhindura ikirere | Ikoreshwa cyane mu bicuruzwa bihendutse | Nanone ikoreshwa cyane ku bice by'ubwubatsi byakozwe |
| Guhitamo | Hitamo ukurikije ingaruka, ubushobozi bwo kwirinda ubushyuhe, gukomera, ibisabwa mu gukora ndetse n'igiciro cy'ibice byarangiye. | |
| Ikiranga | HIPS | GPPS |
|---|---|---|
| Imiterere | Polystyrene yahinduwe na rubber | Polystyrene ikoreshwa muri rusange |
| Isura Isanzwe | Ubusanzwe nta kintu kigaragara | Ubusanzwe irabagirana kandi irabagirana |
| Ubudahangarwa bw'Ingaruka | Hejuru bitewe n'impinduka za rubber | Kurushaho kugorana |
| Icy'ingenzi cyo guhitamo | Ubukomere, ishingwa n'ubuhanga | Umucyo n'ububengerane |
Ibisanzwe HIPS bigamije ahanini gukoreshwa mu nzu cyangwa mu kugenzura keretse niba urwego nyarwo rw'ibikoresho rwakozwe kandi rugapimwa kugira ngo rugaragare inyuma igihe kirekire.
Ibara ry'umukara ryonyine ntiritanga icyizere cyo kudakira imirasire y'izuba. Imishinga yo hanze igomba kugaragaza imikorere isabwa mu gihe cy'izuba, ubushyuhe n'igihe giteganyijwe cyo gukoresha mbere yo guhitamo ibikoresho.
HIPS ifite amazi make kandi ishobora kwihanganira ibidukikije bya shimi byoroheje, ariko guhuza kwayo kuratandukanye bitewe n'ubwoko bwa shimi, ubwinshi bwayo, ubushyuhe bwayo n'igihe igera.
Niba igice cyarangiye kigiye gukorana n'ibikoresho bisukura, amavuta, alkoholi, imiti isukura cyangwa ibindi binyabutabire, tanga uburyo bwo gushyiramo ibintu mbere yo kwemeza ibikoresho.
| Amakuru y'ibisabwa | kugira ngo utange |
|---|---|
| Porogaramu | Gupima ubushyuhe, gupfunyika, kwerekana, igikoresho, igipfukisho cy'ibikoresho, aho umuntu acumbika cyangwa ibindi bikoreshwa |
| Ubunini | Ubunini bwa 1mm, 2mm, 3mm, 5mm cyangwa ubundi bunini bukenewe mu bushobozi bwo gukora |
| Ingano y'urupapuro | Ubugari bukenewe × uburebure; ubugari ntarengwa bwashyizwe ahagaragara bungana na mm 1600 |
| Ibara | Ibara ry'umukara risanzwe cyangwa iryemewe niba hakenewe guhuza byihariye |
| Ubuso | Ibisabwa ku isura cyangwa gucapa ku buso busabwa |
| Guhindura ikirere | Ingano z'ibihumyo, uburebure bw'inkuta n'ubugari bw'urukuta bukenewe |
| Ubuhanga | Gukata, gucukura, gukoresha inzira, gukoresha CNC, gukata cyangwa guhuza ibikoresho |
| Gucapa | Ikoranabuhanga ryo gucapa, sisitemu ya wino n'ibisabwa mu gutunganya ubuso aho bikenewe |
| Ibisabwa ku mashanyarazi | Garagaza imikorere irwanya static, static-dissipative cyangwa conductive gusa iyo bibaye ngombwa |
| Ibisabwa byihariye | Ibiryo - gukorana n'ibiryo, kwa muganga, umuriro, imirasire ya UV, imodoka cyangwa ibindi bisabwa |
| Ingano | Ingano y'igerageza, itumiza risanzwe n'ikoreshwa ry'umwaka riteganyijwe |
| Aho ugana | Icyambu cy'igihugu n'icyambu cy'aho kijya |
Umukara HIPS urupapuro ni polystyrene idasobanutse neza ikorwa mu buryo bw'umukara. Ihuza ubukomere bwa polystyrene yahinduwe na rubber hamwe n'imikorere myiza yo gushyushya no gukora.
Uru rupapuro ruribanda ku 1mm, 2mm, 3mm na 5mm umukara PS HIPS urupapuro HIPS Ingano yagutse ya HSQY ubu iri hagati ya 0.2mm na 6mm.
Ibisobanuro by'ibicuruzwa ubu birerekana ubugari bugera kuri mm 1600. Kuboneka neza biterwa n'ubunini n'ibisobanuro by'ibicuruzwa.
Nta bunini bumwe bwiza buhari. Igipimo gikwiye cyo gutangira giterwa n'ingano y'ibihumyo, uburebure bw'aho bikorerwa, igipimo cyo gushushanya n'ubugari bw'urukuta bukenewe.
Uburyo bwo gukora thermoforming buterwa n'urwego nyarwo, ibikoresho, ubushobozi bwo gushyushya, ibumba n'imiterere y'ibice. Ubunini bwa urupapuro busaba imiterere itandukanye yo gushyushya no gukora ugereranije n'uburyo bwo gushyushya bwa HIPS .
Ntabwo ari mu buryo bwikora. Umukara usanzwe HIPS ntugomba gufatwa nk'aho uyobora amashanyarazi kuko ari umukara gusa. Umuyobora amashanyarazi HIPS ukeneye urwego rwihariye rufite imikorere ihamye y'amashanyarazi.
Umukara usanzwe HIPS ntabwo ari ikintu kidakora neza mu buryo bwikora. Garagaza uburyo bukenewe bwo kurwanya ubuso n'uburyo bwo gupima igihe hakenewe kugenzura ESD.
Ishobora guhindurwamo thermoformed mo industrial Amasahani , ariko electronics zisaba uburinzi bwa ESD zigomba gukoresha anti-static, static-dissipative cyangwa conductive grade ikwiye aho gukoresha isanzwe isanzwe HIPS .
Yego. Ingano zikwiye za HIPS zishobora gucapwa cyangwa gushushanywa. Gucapa bigomba kugeragezwa hakoreshejwe umukara nyawo urupapuro kuko ikosa ry'iwino, gufatana kwayo n'itandukaniro bigira ingaruka ku isura irangiye.
Yego. HIPS ishobora gucibwa, gucukurwa, gutwarwa no gucukurwa hakoreshejwe imashini ya CNC hakoreshejwe ibikoresho bikwiye n'imiterere y'imikorere.
Ingano zikwiye za HIPS zishobora gupimwa ku bikoresho byo mu nzu, ibifuniko, aho bifungirwa n'ibice by'imbere. Ubushyuhe bw'imikorere, imiterere y'imiti n'imikorere ikenewe ya mekanike bigomba kugaragazwa.
Ikoreshwa rya buri gihe rya HIPS rigenewe gukoreshwa mu nzu. Ibara ry'umukara ryonyine ntiritanga icyizere cyo kudakira imirasire ya UV, bityo imishinga yo hanze igomba kugaragaza ibisabwa mu kuvura ikirere ukwacyo.
HIPS ikunze gutoranywa mu bijyanye no gutunganya ubushyuhe buhendutse, kwerekana no gukora ibikoresho rusange. ABS ikunze gusuzumwa aho hakenewe uburinganire butandukanye mu ngaruka, kurwanya ubushyuhe n'imikorere y'ubuhanga.
Izi porogaramu zisaba urwego rukwiye rw’ikoreshwa n’inyandiko zijyanye na zo. Ntabwo zigomba gufatwa nk’ibikoresho byo mu rwego HIPS hejuru cyangwa ibikoresho byo mu rwego rwo hejuru by’ubuvuzi.
Tanga ikoreshwa, ubugari busabwa, ingano urupapuro , ibisabwa ku buso, uburyo bwo gukora thermoforming cyangwa gukora, ibisabwa byose by'amashanyarazi cyangwa amategeko, ingano n'aho bigarukira.
Umukara HIPS urupapuro ugomba gupakirwa hakurikijwe ubunini, ingano n'ibikenewe ku buso kugira ngo ugabanye gushwanyagurika, kwanduza, kwangirika kw'inkombe no kugenda mu gihe cyo gutwara abantu mu mahanga.
Gupakira impapuro zirinda
Gupakira amapaleti
Gupakira mu mahanga
HSQY Plastic Group ihura n'abakora thermoformers mpuzamahanga, abakora amapaki, abakora ibikoresho, abacapa, abakwirakwiza ibikoresho ndetse n'abaguzi ba pulasitiki bo mu nganda- urupapuro mu imurikagurisha mpuzamahanga ry'inganda.
Ibikorwa by'imurikagurisha mpuzamahanga rya HSQY Plastic Group
Impamyabumenyi n'inyandiko bya tekiniki biboneka bigomba kwemezwa neza ku rwego rw'umukara HIPS , ubunini n'ikoreshwa ry'ibicuruzwa mbere yo kwemezwa kw'itumiza.
HSQY Plastic Group itanga ibikoresho HIPS , GPPS n'ibindi bikoresho bya pulasitiki urupapuro ku bikoresho bipima ubushyuhe, abakora amapaki, amasosiyete yerekana ibikoresho, abakora ibikoresho, abacapa n'abakora inganda. Ubunini, ingano, amabara, ibisabwa ku buso n'ibisabwa mu gutunganya ibintu bishobora kuganirwaho hakurikijwe umushinga.
Icyiciro cy'ibicuruzwa
Reka dushake igisubizo gikwiye cya pulasitiki