TR202016272A2 - STRETCH FILM WITH HIGH BARRIER FEATURE - Google Patents

STRETCH FILM WITH HIGH BARRIER FEATURE Download PDF

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Publication number
TR202016272A2
TR202016272A2 TR2020/16272A TR202016272A TR202016272A2 TR 202016272 A2 TR202016272 A2 TR 202016272A2 TR 2020/16272 A TR2020/16272 A TR 2020/16272A TR 202016272 A TR202016272 A TR 202016272A TR 202016272 A2 TR202016272 A2 TR 202016272A2
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Turkey
Prior art keywords
product
film
stretch film
antifog
high barrier
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TR2020/16272A
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Turkish (tr)
Inventor
Yildirim Uğur
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Besel Basim Sanayi Ve Ticaret Anonim Sirketi
Beşel Basim Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇
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Priority to TR2020/16272A priority Critical patent/TR202016272A2/en
Publication of TR202016272A2 publication Critical patent/TR202016272A2/en
Priority to PCT/TR2020/051469 priority patent/WO2022081106A1/en

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/246—All polymers belonging to those covered by groups B32B27/32 and B32B27/30
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/02—Wrappers or flexible covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

Buluş, dışarıdan gelecek oksijen, ısı, kir, toz, su ve su buharının içerisinde bulunan endüstriyel veya gıda alanındaki ürüne geçişini engelleyen, maliyet açısından avantajlı, kullanıcının zamandan tasarruf etmesini sağlayıp işleme kolaylığı olan, ürünün depolama maliyetlerini de düşüren, dışarıdan gelecek basınçlara karşı dayanıklı, elastik özelliğe sahip yüksek bariyer özelliği kazandırılmış antifog streç film ile ilgilidir.The invention prevents the passage of oxygen, heat, dirt, dust, water and water vapor from outside to the product in the industrial or food field, is cost-effective, saves the user time and is easy to process, reduces the storage costs of the product, and is resistant to external pressures. is related to antifog stretch film with elastic and high barrier properties.

Description

TARIFNAME YÜKSEK BARIYER VE ANTIFOG ÖZELLIGI KAZANDIRILMIS STREÇ FILM TEKNIK ALAN Bulus, dßarmlan gelecek oksijen, ßükir, toz, su ve su buharlimi içerisinde bulunan endüstriyel veya gEla alanmdaki ürüne geçisini engelleyen, maliyet açßmdan avantajlj kullanEEiIi zamandan tasarruf etmesini saglayp isleme kolayIEgüolan, ürünün depolama maliyetlerini de düsüren, dßarîtlan gelecek basmçlara karsE dayan El: elastik özellige sahip yüksek bariyer özelligi kazandmttmüs antifog streç film ile ilgilidir. TEKNIGIN BILINEN DURUMU Geçen yüzyüm ikinci yarsndan itibaren plastikler, her türlü gda ve içecek ambalajlanmasjida kullanilan bir madde olarak önemlerini gün geçtikçe arttmmslardi Polimerlerin birçok uygulama alanlarmim olmasjiii oldukça fazla sebebi yardm Bunlardan bazilari yüksek derecede saglamlklarjve sertlikleri, darbe dayan El Jüllarii 11 yüksek olusu, gelistirilmis elektriksel özellikleri, tekrarlanan proses çemberlerine sahip oluslarü ekipman maliyeti ve üretimin maliyetinin düsük olmasîflj. Bunun yanjsEa tüketiciler için yüksek güvenlik standartlarma sahip olusu, ambalaj sanayinde bu maddeye talebin artmasmiL ve ürün tabanLnm genislemesini saglamlstln. Günümüzde kullanman birçok çesit ambalaj malzemesi vardî. Bunlarm en pratik, modern ve kaliteli olan jstreç filmdir. Streç filmi birçok üründe ambalaj malzemesi olarak kullanJE. Palet sevkiyatladea malzemelerin sartlarak devrilme veya dgs hava kosullarmidan etkinlesmesini engellemek amacjile kullanüfnaktadî. Örnegin büyük halEruloIarmimi, kumaslarii veya benzerlerinin imalatçîilan istenen yere nakledilmesi gibi nakliye ve depolama alanlarnda da kullanmn imkan: bulunmaktad I. Esneklik amacLile birçok plastik çesidi ambalajlardan kullanimaktadij. Bunlarin en önemlilerinden birisi Polietilendir. Polietilen, gaz halindeki Etilen monomerinin (CH2=CH2) yüksek basnç ve scaklk altmdaki polimerizasyonundan meydana gelen termoplastik bir filmdir. Transparan özellikteki bu filmler ambalaj baskilar riida ve aseptik ambalaj kutularimini tabaka halinde üretimleri sinas mda diger filmlere oranla daha çok kullanilFrilar. Özellikle meyve-sebze, fü'Fn ürünleri ve ilaç ambalajlarjida, Iaminasyonlarda ve koekstruzyonlarda dayaniklilik, bariyer özellikleri, &Sila kapanabilme ve düsük maliyet özelliklerinden dolay jercih edilirler. Ancak polipropilen (PP) filmin berrakltgmia sahip degildirler. Streç filmler, bir filmin ön gerilmesiyle üretilir. Filmin önceden gerilmesi filmin gücünü artiacaktîi Ayrßa, önceden gerdirme bir hafâa etkisi yaratE, böylece daha fazla gerildikten sonra film önceki durumunu hatirlar, yani film büzülür. Streç filmler, mallar ni sevkiyat için paketlenmesinde kullanilir. Mallarn bir palet veya benzeri bir yerde birbirine baglanmasi için özellikle streç filmler kullanilir. Bu amaçla, mallar bir palet üzerine istiflenir ve mallarmi palet üzerinde güvenli bir sekilde tutulmasHiçin bunlarIii etrafIia tamamen streç film sarüm Mallarh etrafma sarüEken filmdeki farkljgerilimler ve mallarm keskin kenarlar: nedeniyle, streç filmler kenarlarmidan kolayca yEtEtabilir. Filmdeki dogal gerilim nedeniyle bu, film tabakasîiimi yîtürnasma neden olacak ve böylece mallarmi yeniden sarBnasDgerekecektir. Streç filmin dß kenarlarIiIii yitürna tehlikesini azaltmak için, EP 0 728 102'den uzunlamasina filmin iki ds kenarmimi içe dogru katland g ibilinmektedir. AyriCra böyle bir streç filmde, bir kartonun keskin kenarlari i veya çikintili kenarlar ifilmde delikler açabilir. Filmin uzunlamas nia yönündeki gerilim nedeniyle, bu delikler filmin tüm genisligi boyunca genisleyecek ve böylece bir palet üzerinde mallarji güvenli bir sekilde tutulmasEgaranti edilmeyecektir. Plastik ambalaj filmi için çogunlukla LDPE kullan Itnaktad 1. Çok dayanEleve seffaf olup nispeten düsük seviyede su buharü geçirgenligine sahip bulunmaktadî. Kimyasal olarak çok inerttir ve pratikte kokusuz ve tatsîdj. En önemli avantajlarjidan biri kolay yapßabilir olmasEilI. Bu nedenle laminasyon uygulamalarmida Lsüolarak yapLstmma saglamak için birlestirici olarak da kullanim Yüksek düzeyde bir yntii'na dayankIiLgnia sahip olup darbeye karsD mukavemetlidir. AyrEa asgari -50°C ve azami 70°C'ye kadar yaygmi bir kullanEn BBLHüzenleme niteligine sahip bulunmaktadtr. Düsük yogunluklu polietilen (LDPE): LDPE'nin özellikleri HDPE ile ayn d n. Ancak LDPE solvent ve madeni yaglara da az dayanikleTr. Düsük yogunluklu polietilen (LDPE) film kalmIEgEQ mikrondan (baglayßtfilm olarak) 0,25 mmiye kadar (yapEfilm olarak) degisir. Genislikler ise; 100 mm'den 1.000 mm'ye kadar degisebilir. Önemli film özellikleri içinde parlakltk, çesitli darbelere karsjjayanjglm, uzama, ymtttmaya karsîdayantklül( ve çekme direnci, ßüyapSma, baskEve makine kullanIin kolaylEgE açBIidan islenebilirlik vard E. Diger taraftan düsük yogunlukta PE film, oksijen, karbon-dioksit gibi gazlara karsL nispeten yüksek seviyede bir geçirgenlige sahiptir. Bu nedenle oksidasyona karsi i elverisli olan ambalaj için veya direkt bir film olarak vakum ambalaj için pek uygun degildir. Ayrica birçok yag türleri için geçirgendir. Düsük yogunlukta PE ile ambalajlanan belli ürünlerin koku ve tadjida kademeli olarak bir kayba ugrayß ugramadgjwntrol edilmelidir. Kâgm, mukavva, alüminyum folyo gibi malzemelerin yüzeyine kolayca kaplanabilirler. LDPE film, flekso ve serigafi baskDyöntemleri ile bashbilmektedir. Yüzeyin ön isleme tabi tutulmasjpek zorunlu degildir. Düsük yogunlukta polietilen, ambalajlE ekmek, dondurulmus gmlalar, yagLaanmLs süt, sosisler, parça etler ve ambalaj torbalar' için kullan Imaktadln. Etilen Vinil Alkol (EVOH) EVOH neme duyarlübir polimerdir. Suyun varlgümalzemenin oksijeni engelleme gücünü zaytflatî. Bu nedenle, EVOH ambalaj yaptlarmida genellikle poliolefinlerle veya su buharmEengelleyen diger polimerlerle çevrelenmis koekstrüzyon içinde kalmS, bir iç katman olarak ambalaja dâhil edilir. Bu yapttarda EVOH ile poliolefin arasiida bulunan yapßkan katman veya bag katmanEEVOH ile poliolefinin birbirine yeterince yapSmaSMLsaglar. Etilen vinil alkol (EVOH) etilen vinil asetat kopolimerinin kontrollü hidrolizi ile üretilir. Polar özelligi güçlü olan OH gruplarm moleküllerin arasmidaki kuvvetleri arttmmken; etilen gruplarUmoleküler hareketliligi saglar. Polimerde rastgele dagüms etilen ve vinil alkol birimleri vardin. Etilenin vinil alkole orani son ürünün özelliklerini belirler. En düsük etilen veya en yüksek vinil alkol içerigi kullanilarak çok güçlü bariyer özellikleri elde edilebilir. Öte yandan en yüksek etilen içerigi veya en düsük vinil alkol içerigi esnekligi arttmm. Üreticiler kendi ihtiyaçlarmia uygun etilen/vinil oraniijbulmak için istenen islenme özelliklerine karar vermelidir. Teknikteki streç filmler birçok konuda yetersiz kalmaktadi. Örnegin istenilen mukavemeti vermedigi zaman ürün birkaç defa paketlenmek zorunda kalarak hem film kullan mi hem maliyet hem de paketleme süresi artmaktadm. Sonuç olarak mevcut teknikte var olan ve günümüzde kullanrlmakta olan yapjanmalara ve uygulamalara ait eksikliklerin ve dezavantajlarli ortadan kaldijrnasiia olan gereksinim, ilgili teknik alanda bir gelistirme yapmayjzorunlu kjinaktadj. BULUSUN TANIMI Mevcut bulus yukarkia bahsedilen dezavantajlarLiortadan kald mmak ve ilgili teknik alana yeni avantajlar getirmek üzere gelistirilmis yüksek bariyer özellikli antifog streç film ile ilgilidir. Bulusun amac: yüksek bariyer özelligi kazandîühiß, antifog özelligi bulunan, saydam, hafif ve ekonomik bir filmin üretilmesidir. Bulusun bir diger amaci filmin dßiida sahip oldugu parlaklfk ve kayganlik sayesinde kir tutmayan bir film yapBIimi elde edilmesidir. Bulusun bir diger amacm bariyer özelligi iyilestirilmis, yükü gidecegi yere kadar tek parça halinde, istikrarlEbir sekilde zarar görmeden ulastmürnasmiîsaglayan bir streç filmin üretilmesidir. Bulusun bir diger amaci; sarilacagi ürün bir yerden bir yere sevk edildiginde ürünün üzerinden ayrilmadan yüksek tutunma gücü ile ürünü sFRTca saran ve koruyan bir film elde edilmesidir. Bulusun bir diger amac: strecin kaplanacak olan ürünün yüzeyine gerdirme yapJInadan önce, filmde yeterli derecede tutunma olmasmm dSIida filmin bu yeterliligini streç islemi yapJIlEtan sonra da gerçeklestirilmesidir. Bulusun bir diger amacgi içerisine hiçbir sekilde yagmur veya herhangi bir yerden gelecek suyu geçirmeden hidrofob gibi davranmasidir. Bulusun bir diger amaci normal kosullar altmida - 40 C 'den + 80 C 'ye kadar dayan Elîbir filmin elde edilmesidir. Bulusun bir diger amacm ambalajlama için yüksek maliyetler yerine ekonomik ve herkesin ulasabilecegi, kullan SlEbir ürün elde edilmesidir. Bulusun bir diger amacü ürünün istenilen kalmlikta üretilebilir olmasElE. Bulusun bir diger amac ;i endüstriyel anlamda örnegin paletlerde olan kullan mlar nda paletlerdeki ürünlerin dag lmas mi ve paletlerin birbirlerine yapsmasnrönleyerek bir arada kalmasnîsaglamaktm. Bulusun bir diger amac: ince, kolay tasmabilir darbelere karsü sönümleme özelligine sahip bir film meydana getirilmesidir. Bulusun bir diger amac: yapßîiida bulunan bulunan EVOH etilen vinil alkol sayesinde oksijen bariyer özelliginin daha da arttEEfmasElE. Bulusun bir diger amacL; kokusuz yapLsmdan dolayiiygulanan üründe istenmeyen kokunun biakünamasîli. Bulusun bir diger amaCl; seffaf yaplSl !sayesinde içerisinde yer alan ürünün rahat bir sekilde görülebilmesini saglamaktadir. Bulusun bir diger amac: esnek yapßüsayesinde kolay uygulama ve uygulanan ürünün seklini almaya elverisli birfilmin saglanmasßim. Bulusun bir diger amacj müsterinin talebine göre 8 micron-30 micron arasmida olan her kalIiilEta üretimin yapffabilmesidir. BULUSUN DETAYLI AÇIKLANMASI Bu detayli açiklamada bulus konusu yapilanmasinin tercih edilen alternatifleri, sadece konunun daha iyi anlasfrmasma yönelik olarak ve hiçbir sininlaycîetki olusturmayacak sekilde açElanmaktadI. maleik anhidritin modifikasyonu, %92-100 LLDPE, D vidasmda %100 EVOH, C karakterize edilmesidir. Bulusun tercih edilen örnek bir yapilanmasinida; - B vidasIiida %99 LLDPE. %1 proses katkE - A vidasmda %3 oranmda LLDPE ve maleik anhidritin modifikasyonu, %97 - D vidasîiida %100 EVOH, - C vidasiida %64 LLDPE, %35 katkEantifog, %1 proses katkEiçermesi ile karakterize edilmesidir. Bariyer streç film, streç film makinasmida çekilir. Ürünün Üretim yöntemi; - Dozajlanacak ürünler streç film makinesindeki Dozaj A, B, C, D'ye yerlestirilir. - KullanTan makinenin feed-blok sistemine sahip olmasmidan dolayTA vidasjidaki ürünlerin gramajEiki kola ayrtimaktad E. olusmaktad I. Katman Oranl lAyar Deger (%) Dozaj B Dozaj A Dozaj A Dozaj C ve sonucunda 5 katmani: bir PROSES KATKI (% 1) LLDPE (%3) MALEIK ANHIDRIT MODIFIED EVOH (%100) ETILEN VINIL ALKOL KOPOLIMER LLDPE (%3) MALEIK ANHiDRiT MODIFIED KA TKi-ANTJ'FOG (%35) PROSES KA TK.' Bulusa eklenen EVOH streç film kaplanan yüzey içine oksijen ve su buharjgeçisine bariyerolusturmaktadm. Bulusa eklenen antifog streç film yüzeyinde bugu olusmasini engellemektir. Katkiantifog olarak kullan Llan madde bir çesit masterbatch tir. Streç mak/nam çahsma prensibi ve makine degerlerindeki' sicak! klar asagida verilmistin A: 170-265°C arasi i B: 'HO-265°C aras: C: 170-265°C aras: D: 170-265°C aras: Feedblok 265°C Kafa 265°C de çalßm. TR TR DESCRIPTION STRETCH FILM WITH HIGH BARRIER AND ANTIPHOGUE FEATURES TECHNICAL FIELD The invention prevents the transfer of oxygen, sugar, dust, water and water vapor to the product in the industrial or field area, which is in the future, is cost advantageous, saves usable time and facilitates processing, reduces the storage costs of the product. EL: It is related to antifog stretch film that has high barrier properties and has elastic properties. KNOWN STATE OF THE TECHNOLOGY Since the second half of the last century, plastics have increased their importance day by day as a material used in all kinds of food and beverage packaging. There are many reasons why polymers have many application areas. Some of these are their high degree of durability and hardness, high impact resistance, improved electrical properties. Their features, having repeated process circles, low equipment cost and production cost. The reason for this is that it has high safety standards for consumers, increasing the demand for this substance in the packaging industry and expanding its product base. There are many types of packaging materials available today. The most practical, modern and high quality of these is stretch film. Stretch film is used as packaging material in many products. Pallet shipments are also used to condition the materials and prevent them from tipping over or being activated by adverse weather conditions. It is also possible to use it in transportation and storage areas, for example, transporting large rolls, fabrics or similar products to the desired location of the manufacturers. I. Many types of plastic are used in packaging for flexibility purposes. One of the most important of these is Polyethylene. Polyethylene is a thermoplastic film formed by the polymerization of gaseous Ethylene monomer (CH2=CH2) under high pressure and temperature. These transparent films are used more than other films in packaging printing, sheet production of rigid and aseptic packaging boxes. They are preferred especially in fruit and vegetable, product and pharmaceutical packaging, laminations and co-extrusions due to their durability, barrier properties, sealability and low cost properties. However, they do not have the clarity of polypropylene (PP) film. Stretch films are produced by pre-stretching a film. Pre-stretching the film will increase the strength of the film. In addition, pre-stretching creates a stretching effect, so that after further stretching the film remembers its previous state, i.e. the film shrinks. Stretch films are used to package goods for shipment. Stretch films are especially used to bind goods together on a pallet or similar. For this purpose, the goods are stacked on a pallet and completely wrapped with stretch film around them to keep the goods securely on the pallet. Due to the different tensions in the film wrapped around the goods and the sharp edges of the goods, the stretch films can easily extend over the edges. Due to the inherent tension in the film, this will cause the film to lose its delamination and thus the goods will need to be rewound. In order to reduce the risk of losing the outer edges of the stretch film, it is known from EP 0 728 102 that the two outer edges of the film are folded longitudinally inwards. Additionally, in such a stretch film, sharp edges or protruding edges of a cardboard can create holes in the film. Due to the tension in the longitudinal direction of the film, these holes will expand across the entire width of the film and thus the safe retention of goods on a pallet will not be guaranteed. Mostly use LDPE for plastic packaging film. Itnaktad 1. Very durable. It is transparent to the surface and has a relatively low level of water vapor permeability. It is very chemically inert and is practically odorless and tasteless. One of the most important advantages is that it is easy to make. For this reason, it can also be used as a binder to ensure adhesion in lamination applications. It has a high level of sculptural resistance and is resistant to impact. It is also suitable for widespread use up to a minimum of -50°C and a maximum of 70°C. Low density polyethylene (LDPE): The properties of LDPE are the same as HDPE. However, LDPE is also less resistant to solvents and mineral oils. Low density polyethylene (LDPE) film residue varies from microns (as binderfilm) to 0.25 mm (as adhesivefilm). The widths are; It can vary from 100 mm to 1,000 mm. Important film properties include gloss, resistance to various impacts, elongation, resistance to shearing and tensile strength, adhesion, printing and processability in terms of ease of use. On the other hand, low density PE film has a relatively high level of permeability to gases such as oxygen and carbon dioxide. For this reason, it is not suitable for packaging that is susceptible to oxidation or for vacuum packaging as a direct film. It is also permeable to many types of oils. It should be checked that certain products packaged with low density PE do not suffer a gradual loss of odor and taste. They can be easily coated on the surface of materials such as cardboard and aluminum foil. It can be printed with LDPE film, flexo and screen printing methods. Pre-treatment of the surface is not required for low density polyethylene, packaged bread, frozen milk, sausages, cut meats and packaging bags. Ethylene Vinyl Alcohol (EVOH) EVOH is a moisture sensitive polymer. The presence of water weakened the material's ability to block oxygen. For this reason, EVOH is often included in packaging as a co-extruded inner layer surrounded by polyolefins or other polymers that block water vapor. In these works, the adhesive layer or bond layer between the EVOH and the polyolefin ensures that the EEVOH and the polyolefin stick together sufficiently. Ethylene vinyl alcohol (EVOH) is produced by the controlled hydrolysis of ethylene vinyl acetate copolymer. OH groups, which have strong polar properties, increase the forces between molecules; Ethylene groups provide molecular mobility. There were random silver ethylene and vinyl alcohol units in the polymer. The ratio of ethylene to vinyl alcohol determines the properties of the final product. Very strong barrier properties can be achieved using the lowest ethylene or highest vinyl alcohol content. On the other hand, the highest ethylene content or the lowest vinyl alcohol content increased flexibility. Manufacturers must decide on the desired processing properties to find the ethylene/vinyl ratio that suits their needs. Technical stretch films are inadequate in many aspects. For example, when the product does not provide the desired strength, it has to be packaged several times, increasing the use of film, cost and packaging time. As a result, the need to eliminate the deficiencies and disadvantages of the structures and applications that exist in the current technique and are used today makes it necessary to make a development in the relevant technical field. DESCRIPTION OF THE INVENTION The present invention relates to a high barrier antifog stretch film developed to eliminate the disadvantages mentioned above and to bring new advantages to the relevant technical field. The purpose of the invention is to produce a transparent, lightweight and economical film that has high barrier properties and antifog properties. Another aim of the invention is to obtain a dirt-repellent film thanks to the brightness and slipperiness of the film on the outside. Another aim of the invention is to produce a stretch film with improved barrier properties, which ensures that the load reaches its destination in one piece, in a stable manner, without being damaged. Another purpose of the invention is; It is to obtain a film that wraps and protects the product with high adhesion power without being separated from the product when it is shipped from one place to another. Another purpose of the invention is to ensure that there is sufficient adhesion to the film before the stretch is applied to the surface of the product to be covered, and to ensure that this sufficiency of the film is also achieved after the stretching process. Another purpose of the invention is to act as a hydrophobic without letting rain or water from anywhere into it. Another aim of the invention is to obtain a flexible film that can withstand temperatures from -40°C to +80°C under normal conditions. Another aim of the invention is to obtain a product that is economical and accessible to everyone, instead of high costs for packaging. Another purpose of the invention is that the product can be produced in the desired thickness. Another purpose of the invention was to ensure that the products on the pallets remain together by preventing them from falling apart and the pallets from sticking to each other in industrial use, such as on pallets. Another purpose of the invention is to create a thin, easy-to-carry film that has damping properties against impacts. Another purpose of the invention is to further increase the oxygen barrier feature thanks to the EVOH ethylene vinyl alcohol found in the structure. Another purpose of the invention is; Due to its odorless structure, there should be no unwanted odor in the applied product. Another purpose of the invention is; Thanks to its transparent structure, it allows the product inside to be seen easily. Another purpose of the invention is to provide a film that is easy to apply thanks to its flexible structure and is suitable for taking the shape of the applied product. Another purpose of the invention is to be able to produce any thickness between 8 microns and 30 microns, according to the customer's demand. DETAILED DESCRIPTION OF THE INVENTION In this detailed explanation, the preferred alternatives of the structuring of the subject of the invention are explained only for a better understanding of the subject and in a way that does not create any limiting effects. modification of maleic anhydride, 92-100% LLDPE, 100% EVOH in screw D, C characterization. A preferred exemplary embodiment of the invention is; - 99% LLDPE on B screw. It is characterized by containing 1% process additive - modification of 3% LLDPE and maleic anhydride in screw A, 97% - 100% EVOH in screw D, - 64% LLDPE in screw C, 35% additive antifog, and 1% process additive. Barrier stretch film is drawn on a stretch film machine. Production method of the product; - The products to be dosed are placed in Dosage A, B, C, D in the stretch film machine. - Due to the fact that the machine used has a feed-block system, the grammage of the products in the screw is divided into two branches E. consists of Layer I Proportionate Value (%) Dosage B Dosage A Dosage A Dosage C and as a result 5 layers: a PROCESS ADDITIVE (1%) LLDPE (%) 3) MALEIC ANHYDRITE MODIFIED EVOH (100%) ETHYLENE VINYL ALCOHOL COPOLYMER LLDPE (3%) MALEIC ANHYDRIT MODIFIED KA TKi-ANTJ'FOG (35%) PROCESS KA TK.' The EVOH stretch film added to the invention creates a barrier to the passage of oxygen and water vapor into the coated surface. The antifog added to the invention is to prevent the formation of fog on the stretch film surface. The substance used as an additive is a type of masterbatch. Stretch machine working principle and temperature in machine values! Details are given below: A: Between 170-265°C B: Between 'HO-265°C: C: Between 170-265°C: D: Between 170-265°C: Feedblok 265°C Head operating at 265°C . TR TR

Claims (3)

ISTEMLER Bulus, d Sar dan gelecek oksijen, |Sl,l kir, toz, su ve su buhariniin içerisinde bulunan endüstriyel veya gida alan midaki ürüne geçisini engelleyen, maliyet açBDdan avantajlj kullan @mim zamandan tasarruf etmesini saglayp isleme kolaylgjolan, ürünün depolama maliyetlerini de düsüren, dSarîlian gelecek basiiçlara karsEdayan [klEelastik özellige sahip yüksek bariyer özelligi kazandIÜInS antifog streç film ile ilgili olup özelligi; B vidashda %94-100 LDPE, %0-10 proses katkÇREQUIREMENTS The invention is a cost-effective use that prevents the passage of oxygen, wet dirt, dust, water and water vapor from the d Yellow to the product in the industrial or food-grade environment, saves time and facilitates processing, reduces the storage costs of the product. , dSarîlian is related to antifog stretch film, which is resistant to future pressures and has gained a high barrier feature with elastic properties; B in screw 94-100% LDPE, 0-10% process additive A vidasnda %0-10 LLDPE maleik anhidritin modifikasyonu, %92-100 D vidas nda %100 EVOH, içermesi ile karakterize edilmektedir. Bulus, Istem 1'e bagljdßarßlan gelecek oksijen, ß: kir, toz, su ve su buharîm içerisinde bulunan endüstriyel veya gEJIa alan mdaki ürüne geçisini engelleyen, maliyet açßmidan avantajlü kullan @mm zamandan tasarruf etmesini saglayîi› isleme kolaylgjolan, ürünün depolama maliyetlerini de düsüren, dSarLdan gelecek bastnçlara karsLdayanlkIL, elastik özellige sahip yüksek bariyer özelligi kazand nilmis antifog streç filmin üretim yöntemi ile ilgili olup özelligi; Ekstürüderin A,B,C,D olarak isimlendirilen vidalarîiia gerekli olan ham maddelerin yüklenmesi; Streç Filmin streç film makinesinde çekilmesi,It is characterized by the modification of 0-10% LLDPE maleic anhydride in screw A, and 100% EVOH in screw D, 92-100%. The invention, according to claim 1, prevents the passage of future oxygen, ß: dirt, dust, water and water vapor in the product in the industrial or geothermal area, enables cost-effective use, saves time, facilitates processing, reduces the storage costs of the product. It is related to the production method of antifog stretch film, which is resistant to external pressures, has high barrier properties with elastic properties, and its feature is; Loading the necessary raw materials with the screws named A, B, C, D of the extruder; Filming of the stretch film on the stretch film machine, A vidashda bulunan ekstürüderin 2 kola ayrtlrnasÇ Islem sonucunda 5 katman içeren tek bir filmin olusmasEislem adEnlarmiE içermesi ile karakterize edilmektedir.It is characterized by the fact that a single film containing 5 layers is formed as a result of the process, containing the process name. 3- Bulus, Istem Te bagljLSarmian gelecek oksijen, BL, kir, toz, su ve su buharIiiIJi içerisinde bulunan endüstriyel veya gßia alan mdaki ürüne geçisini engelleyen, maliyet açksmidan avantajlL,J kullan mmmi zamandan tasarruf etmesini saglay p isleme kolayl g blan, ürünün depolama maliyetlerini de düsüren, diSaridan gelecek basinçlara karsi dayanikli, elastik özellige sahip yüksek bariyer özelligi kazandîilmß antifog streç filmin üretim yöntemi ile ilgili olup özelligi; katk:antifog olarak kullanJZan maddenin bir çesit masterbatch olmasdj.3- Invention, Dependent on the Demand, which prevents the passage of oxygen, BL, dirt, dust, water and water vapor in the industrial or outdoor area, is advantageous in terms of cost, saves time in use and facilitates processing, enables the product to be stored It is related to the production method of the antifog stretch film, which is resistant to external pressures, has an elastic feature, and has gained high barrier feature, which also reduces its costs; Additive: Use as an antifog. The substance is a kind of masterbatch.
TR2020/16272A 2020-10-13 2020-10-13 STRETCH FILM WITH HIGH BARRIER FEATURE TR202016272A2 (en)

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PCT/TR2020/051469 WO2022081106A1 (en) 2020-10-13 2020-12-31 High barrier anti-fog stretch film

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JP3238245B2 (en) * 1993-06-17 2001-12-10 大倉工業株式会社 Stretch film for food packaging
JPH08281886A (en) * 1995-04-20 1996-10-29 Asahi Chem Ind Co Ltd Polyolefinic stretch packing film
JP3794967B2 (en) * 2002-03-05 2006-07-12 三井化学ファブロ株式会社 Stretch film for hand wrapping and its manufacturing method
EP2052857A1 (en) * 2007-10-22 2009-04-29 Dow Global Technologies Inc. Multilayer films

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