BR102013024227A2 - Method of producing a flexible laminate structure, thus obtained flexible laminate structure, mono stretched polyethylene film and packaging formed by the flexible laminate structure - Google Patents

Method of producing a flexible laminate structure, thus obtained flexible laminate structure, mono stretched polyethylene film and packaging formed by the flexible laminate structure Download PDF

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Publication number
BR102013024227A2
BR102013024227A2 BRBR102013024227-6A BR102013024227A BR102013024227A2 BR 102013024227 A2 BR102013024227 A2 BR 102013024227A2 BR 102013024227 A BR102013024227 A BR 102013024227A BR 102013024227 A2 BR102013024227 A2 BR 102013024227A2
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Brazil
Prior art keywords
film
mono
laminate structure
polyethylene film
flexible laminate
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BRBR102013024227-6A
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Portuguese (pt)
Inventor
Carlos Hart
Miguel Ascoli Neto
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Embalagens Flexíveis Diadema S A
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Application filed by Embalagens Flexíveis Diadema S A filed Critical Embalagens Flexíveis Diadema S A
Priority to BRBR102013024227-6A priority Critical patent/BR102013024227A2/en
Priority to PCT/BR2014/000339 priority patent/WO2015039203A1/en
Publication of BR102013024227A2 publication Critical patent/BR102013024227A2/en

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • 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
    • B32B27/32—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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B32B2038/0028—Stretching, elongating
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • 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
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • 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
    • B32B2439/02—Open containers
    • B32B2439/06—Bags, sacks, sachets
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/14—Printing or colouring
    • B32B38/145—Printing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F110/02—Ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene

Abstract

Método de produção de uma estrutura laminada flexível,estrutura laminada flexível assim obtida,filme de polietileno mono estirado e embalagem formada pela estrutura flexível. O presente pedido de patente se refere a um produto laminado em camadas, constituido por duas ou mais camadas, proporcionando que a embalagem possa ser aberta em qualquer posição longitudinal ao sentido de envase escolhido pelo consumidor, caracteristica esta para o uso em embalagens de produtos em geralMethod of producing a flexible laminate structure, thus obtained flexible laminate structure, mono stretched polyethylene film and packaging formed by the flexible structure. The present patent application relates to a layered laminate product consisting of two or more layers, providing that the package can be opened in any longitudinal position to the direction of filling chosen by the consumer, which is characteristic for use in product packaging. general

Description

Método de produção de uma estrutura laminada flexível, estrutura laminada flexível assim obtida, filme de polietileno mono estirado e embalagem formada pela estrutura laminada flexível. A presente invenção refere-se a um método de produção de uma estrutura jlaminada flexível multicamadas para a utilização em embalagens diversas, com abertura direcionada, em especial, para embalagens de alimentos, cuidados pessoais e higiene e limpeza. A invenção refere-sie também a estrutura laminada contendo orientação de uma das camadas para proporcionar ao produto final (embalagem) abertura direcionada, podendo esta ser aberta em qualquer ponto escolhido pelo consumidor ou em um ponto definido por um picote, sem risco de perda do conteúdo da dita embalagem, no sentido de máquina (longitudinal em relação à bobina).Method of producing a flexible laminate structure, thus obtained flexible laminate structure, mono-stretched polyethylene film and packaging formed by the flexible laminate structure. The present invention relates to a method of producing a multilayer flexible laminate structure for use in miscellaneous opening-oriented packaging, in particular for food packaging, personal care and hygiene and cleaning. The invention also relates to the laminate structure containing orientation of one of the layers to provide the final product (packaging) with a directed opening, which can be opened at any point chosen by the consumer or at a point defined by a perforation, without risk of loss. contents of said package in the machine direction (longitudinal to the coil).

Estado da Técnica O mercado de embalagens flexíveis sofreu inúmeras transformações desde sua criação para suprir necessidades em constantes mutações e que se movem em função de alterações sociais e culturais em todo o mundo.State of the Art The flexible packaging market has undergone numerous transformations since its inception to meet ever-changing needs that are driven by social and cultural change around the world.

Estas modificações começaram a surgir devido à necessidade de se conservar os produtos alimentícios por mais tempo, muitas vezes sem refrigeração, transportados por grandes distâncias. A nova estrutura familiar, onde a mulher saiu para trabalhar fora cie casa; o aparecimento de uma parcela enorme de pessoas que moram sozinhas; a população mundial que está ficando com um número de idosos cada vez maior; as crianças que hoje tem um maior poder de decisão na hora da compra; os grupos étnicos influenciando cada vez mais os desenvolvimentos de novos produtos conforme suas necessidades.These modifications began to emerge due to the need to store food products longer, often uncooled, transported over long distances. The new family structure, where the woman left for work outside the home; the emergence of a huge portion of people living alone; the world population that is getting older and older; children who today have greater decision-making power at the time of purchase; ethnic groups increasingly influencing new product developments as needed.

Todos estes fatores fizeram com que as indústrias de transformação de embalagens flexíveis multicamadas desenvolvessem estruturas mais complexas, com menor peso, ergonomia mais adequada, sistemas de abertura fácil, refechamentos, entre outros adventos. Todos estes desenvolvimentos tinham como objetivo satisfazer as necessidades dos consumidores e, cada vez mais a indústria de embalagem tenta alcançar os anseios de seus consumidores melhorando o uso das embalagens. Uma das formas que se identifica como um obstáculo para a boa aceitação das embalagens é sistema de abertura que possibilita o acesso ao produto interno sem que a embalagem fique totaimente inutilizável e ocorra desperd'cio de produto.All of these factors have led the multi-layer flexible packaging manufacturing industries to develop more complex, lighter weight structures, better ergonomics, easy-open systems, re-closures, and more. All of these developments were aimed at meeting the needs of consumers and, increasingly, the packaging industry is trying to meet the wishes of its consumers by improving the use of packaging. One of the ways that is identified as an obstacle to the good acceptance of packaging is opening system that allows access to the internal product without the packaging becoming unusually unusable and product waste.

Para solucionar os problemas de abertura sem resultar na inutilização das! emoalagens flexíveis proporcionando ainda a possibilidade da embalagem ser aberta em c ualquer ponto escolhidlí pelo consumidor no sentido longitudinal a bobina, a indústria de embalagens objetiva alcançar o sistema de abertura direcionada (abertura fácil), que visa auxiliar o consumidor a conseguir acesso ao produto interno, resultando em uma embalagem aberta sem a perda do produto interno, ou melhor, possibilitando que o consumidor possa abrir sua embalagem em qualquer ponto escolhido pelo consumidor ou a partir de um picote pré definido como mencionado anteriormente.To solve opening problems without rendering them unusable! Flexible packaging while still providing the possibility for the package to be opened at any point chosen by the consumer longitudinally to the reel, the packaging industry aims to achieve the directed opening system (easy opening), which aims to assist the consumer in gaining access to the internal product. , resulting in an open packaging without the loss of the inner product, or rather enabling the consumer to open their packaging at any point chosen by the consumer or from a predefined perforation as mentioned above.

Desta forma, foram feitos alguns pedidos de patente no sentido de proporcionar emDalagens com sistemas de abertura fácil.Accordingly, some patent applications have been filed to provide packaging with easy opening systems.

Um exemplo disso é o pedido de patente EP 0777573, em nome de Mobil Plastics Europ Inc que apresenta um material composto por uma película de polietileno de alta densidade (PEAD), sendo que a película pode ser composta exclusivamente por uma única resina de HDPE, uma mistura de resinas de HDPE, ou de HDPE contenda até 10 por cento em peso de cera microcristalina, fornecendo ao consumidor o controle direcional de abertura. A mistura de resinas HDPE dá melhores características Ide processamento na extrusora, reduzindo o esforço de rotação para extrusar.An example of this is EP 0777573, in the name of Mobil Plastics Europ Inc, which discloses a material composed of a high density polyethylene (HDPE) film, the film being exclusively composed of a single HDPE resin, A blend of HDPE or HDPE resins contains up to 10 weight percent microcrystalline wax, providing the consumer with directional opening control. HDPE resin blending gives better processing characteristics in the extruder, reducing the rotation effort to extrude.

Este pedido tem o inconveniente de utilizar materiais adicionais (misturas de résinas) que encarecem o processo e o tornam mais demorado para ser executado, por exemplo.This application has the drawback of using additional materials (mixtures of resins) which make the process more expensive and time consuming to perform, for example.

Outro exemplo é o pedido de patente EP 2598326, em nome de Toray Plastics America Inc, que se refere a um filme termosselável com excelentes características de vedação, incluindo fita direcional para fácil abertura, sem o uso de esquemas mecânicos ou a laser de perfuração ou rugosidades na superfície e / ou métodos de pontuação slão utilizados.Another example is patent application EP 2598326, in the name of Toray Plastics America Inc, which refers to a heat-sealable film with excellent sealing characteristics, including directional tape for easy opening, without the use of mechanical or laser punching or laser schemes. surface roughness and / or scoring methods are used.

Este pedido tem o inconveniente de utilizar filme termosselável, que requer o uso de outras máquinas para seu processamento, assim como o uso da fita direcional, que jencarece o produto fina .This application has the disadvantage of using heat sealable film, which requires the use of other machines for processing, as well as the use of directional tape, which makes the fine product dull.

Outra forma de embalagem com abertura direcionável está descrita no pedido EP 1243523, em nome de Amcor Flexibles, onde define uma embalagem multilaminada que entre as laminas encontra-se uma substância adesiva interposta entre elas, sendo que para que haja o direcionamento da abertura, é realizado um tratamento mecânico de enfraquecimento na primeira lamina compreendendo uma série de perfurações através da mesma (pré corte a laser). Somente com a combinação da substância adesiva, e pré enfraquecí nento da lamina exterior é que será possível a abertura da embalagem, resultando em um processo de fabricação mais custoso e demorado.Another form of openable opening package is described in EP 1243523, in the name of Amcor Flexibles, where it defines a multilaminated package which between the blades is an interposed adhesive between them, so that the opening is directed to the opening. A mechanical weakening treatment is performed on the first blade comprising a series of perforations therethrough (laser pre-cutting). Only by combining the adhesive and pre-weakening of the outer blade will it be possible to open the package, resulting in a more costly and time consuming manufacturing process.

Como se pode observar, os pedidos acima referenciados e outros são constituídos por materiais laminados, com sistema de abertura, mas que não são capazes de garantir a abertura direcionada em qualquer altura da embalagem para seu uso, por exemplo, na indústria alimentícia.As can be seen, the above referenced and other applications consist of laminate materials having an opening system, but which are not capable of ensuring directed opening at any time of the package for use in, for example, the food industry.

Resumo da InJenção i O objetivo da presente invenção é o de desenvolver um I I material em camadas, com propriedades de abertura direcionada para embalagens flexíveis proporcionando que a embalagem possa ser aberta em qualquer posição longitudinal ao semiuu ub envase ubviuu au esiiiameiuu mono orientado do polímero (polietileno), com custo inferior quando comparado com os outros sistemas de abertura fácil por não necessitar de Jenhuma estrutura adicional, definidas na engenharia da embalagem em relação aos sistemas ou dispositivos de abertura fácil descritos no estado da técnica.SUMMARY OF THE INVENTION The object of the present invention is to develop a layered material having opening properties directed to flexible packaging by providing that the package can be opened in any longitudinal position to the polymer oriented single semiconductor ( polyethylene), which is lower in cost compared to other easy opening systems as it does not require any additional structure defined in the packaging engineering in relation to the easy opening systems or devices described in the prior art.

Estes objel:ivos são alcançados por meio de uma estrutura em camadas, constituída por uma camada de polietileno e uma ou mais camadas de poliéster (Pet) ou polipropileno (PP) ou polipropileno bi orientado (Bopp), impressas ou não.These objectives are achieved by a layered structure consisting of a polyethylene layer and one or more layers of printed or unprinted polyester (Pet) or polypropylene (PP) or bi-oriented polypropylene (Bopp).

Mais especificamente, a camada de polietileno necessária é resultante do mjétodo de produção do Filme de polietileno com 90 a 340 micra processado em extrusora do tipo blow ou cast, onde o produto resultante sofrerá um aquecimento e na passagem do fi me existem cilindros de diâmetros diferentes, mas com mesma velocidade, ocorrendo desla forma um estiraménto longitudinal, objetivando orientar as cadeias poliméricas no jientido longitudinal em uma proporção de 1:3 a 1:6 vezes.More specifically, the required polyethylene layer results from the production method of the 90 to 340 micron polyethylene film processed in blow or cast extruder, where the resulting product will be heated and in the passage of the film there are cylinders of different diameters. , but with the same velocity, occurring in it forms a longitudinal stretch, aiming to orient the polymeric chains in the longitudinal axis in a ratio of 1: 3 to 1: 6 times.

Breve Descrição dos Desenhos A presente invenção será melhor compreendida à luz das figuras em ane*o, dadas a título merarrjente exemplificativo, mas não limitativo, nas quais - Figura 1 é vista em sua forma no ponto de venda - Figura 2 é unja vista em detalhe suas camadas (bi camada) sendo: a) 1 Bopp ou Poliéster impresso/ 2 metalização/3 adesivo/4 Polietileno mono estirado ou b) 1 Polietileno mono estirado impresjso/ 2 adesivo/3 metalizáção/4 Bopp ou Poliéster. - Figura 3 é uma vista em detalhe de suas camadas (tri laminado) sendo: c) 1 Bopp impresso ou Poliéster/2 adesivo/3 Polietileno mono estirado/4 adesivo/5 metalização/6 Bopp ou d) 1 Bopp ou Poliester impresso /2 adesivo/3 metalízação/4 Bopp/5 adesivo/6 Polietileno mono estirado. - Figura 4 é uma vista da embalagem sendo aberta.BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be better understood in the light of the annexed figures given by way of example, but not limitation, in which - Figure 1 is seen in its point of sale form - Figure 2 is an detail its layers (bi-layer) as follows: a) 1 printed Bopp or Polyester / 2 metallization / 3 adhesive / 4 Mono drawn polyethylene or b) 1 printed Mono drawn polyethylene / 2 adhesive / 3 metallization / 4 Bopp or Polyester. Figure 3 is a detail view of its layers (tri-laminate) as follows: c) 1 printed Bopp or Polyester / 2 adhesive / 3 Mono-drawn polyethylene / 4 adhesive / 5 metallization / 6 Bopp or d) 1 printed Bopp or Polyester / 2 adhesive / 3 metallization / 4 Bopp / 5 adhesive / 6 Mono-drawn polyethylene. Figure 4 is a view of the package being opened.

Descrição de uma Realização Preferencial da Invenção Conforme pode ser observado através das figuras, a estrutura flexível laminada objeto da presente invenção, é constituída a partir da presença de uma camada de Bopp ou Poliéster, lamirjada com um filme de Polietileno mono estirado e laminado com um filme de Bopp metalizado (fig. 3).DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION As can be seen from the figures, the laminated flexible structure object of the present invention is constituted by the presence of a Bopp or Polyester layer, laminated with a mono-stretched polyethylene film and laminated with a Metallized Bopp film (Fig. 3).

Preferencialmente, a estrutura laminada é constituída por uma camada de Bopp uu Poliéster, uma sjegunda camada de Polietileno mono estirado e uma terceira camada de um filme de Bopp metalizado.Preferably, the laminated structure is comprised of a Boppu Polyester layer, a second layer of mono-drawn Polyethylene and a third layer of a metallised Bopp film.

Em outra configuração alternativa, é utilizada apenas uma camada de Bjopp metalizado, e laminada com um filme de Polietileno mono estirado impresso.In another alternative embodiment, only one layer of metallised Bjopp is used, and laminated with a printed mono stretched polyethylene film.

Estas camadas são laminadas por processos convencionais tais como: com adesivos, que podem ser com ou sem solventes, mono ou bi componentes e/ou via extrusion-coating, resultando numa bobina de embalagem laminada flexível utilizável em equipamentos de envase automáticos ou não.These layers are laminated by conventional processes such as: with adhesives, which may be with or without solvents, mono- or bi-component and / or via extrusion-coating, resulting in a flexible laminated packaging reel usable in automatic or non-automatic filling equipment.

As temperaturas utilizadas no processo via extrusion-coating são do tipo convpncional, sendo que o polímero utilizado é o próprio Polietíleno.The temperatures used in the extrusion-coating process are conventional, and the polymer used is Polyethylene itself.

Para a confecção do laminado multicamadas, é realizada a impressão em um equipamento de Rotogravura ou Flexografia ou com sistema de impressão hibrido (Ex. offset com flexografia), um filme de Bopp ou Poliéster transparente em reversão ou na frente com reserva de ponto de selagem depois é laminado o produto resultante com im filme de Polietíleno mono estirado, (extrusar o filme de Polietileno em um equipamento blow ou cast com 90 a 340 micra, dependendo da estrutura e grau de rasgo, e levar a um equipamento de estiro onde este filme de Polietileno ira ser processado a quente sendo o puxadór da máquina com velocidade de 3 a 6 vezes maior que o desbobinador), em uma laminalfora com ou sem solvente ou via coating, na última operação, laminar esta estrutura de Bopp ou Poliester impresso e laminado com o filme de Polietileno mono estirado com uijrt filme de Bopp metalízado em uma laminadora com ou sem solvente ou coating.For multilayer laminate production, printing is performed on a Rotogravure or Flexography equipment or with a hybrid printing system (eg offset with flexography), a Bopp film or transparent polyester reversing or in front with sealing point reservation. The resulting product is then laminated with a mono stretch polyethylene film (extruding the polyethylene film in a 90 to 340 micron blow or cast equipment, depending on the structure and degree of tear, and lead to a stretch equipment where this film is cast). will be hot processed with the machine pull at a speed of 3 to 6 times higher than the unwinder), in a laminar outside with or without solvent or via coating, in the last operation, laminate this printed and laminated Bopp or Polyester structure with polyurethane mono stretch film with uijrt metallized Bopp film in a laminator with or without solvent or coating.

Após as (j>perações de impressão e laminação cortam-se e refilam-se as bobinas conforme plano de corte definido do produto final.After printing and lamination operations, the bobbins are cut and refined according to the defined cutting plane of the final product.

Especificamente a camada de polietileno necessária é resultante do método de produção do filme de polietileno com 90 a 340 micra processado em extrusora djD tipo blow ou cast, oncle o produto resultante sofrerá um aquecimento e na passagem do filme existem cilindros de diâmetros diferentes mas com mesma velocidade, ocorrendo desjta forma um estiramento longitudinal, objetivando orientar as cadeias poliméricas no sentido longitudinal em uma proporção de 1:3 a 1:6 vezes. A seguir é apresentado um dos exemplos de estruturas em camadas conforme o objeto da presente invenção.Specifically the required polyethylene layer is the result of the production method of 90 to 340 micron polyethylene film processed in blow or cast djD extruder, oncle the resulting product will be heated and in the passage of the film there are cylinders of different diameters but with the same velocity, occurring in this way, forms a longitudinal stretch, aiming to orient the polymeric chains in the longitudinal direction in a ratio of 1: 3 to 1: 6 times. The following is an example of layered structures according to the object of the present invention.

Exemplo Para solucionar/facilitar a abertura para o consumo de produtos conticos em embalagens flexíveis, é produzido um filme de polietileno com 90 a 340 micra em pxtrusora blow ou cast, após este processo, estira-se este filme no sentido longitudinal que varia dependendo do ígrau de rasgo desejado, em uma proporção de 1:3 a 1:6 vezes (Ex. filme de 200u estirado lóngitudinalmente 5 vezes passa a ter 40u).Example To solve / facilitate the opening for consumption of conical products in flexible packaging, a 90 to 340 micron polyethylene film is produced in a blow or cast pxtruser, after which this film is stretched in the longitudinal direction which varies depending on the desired tear-off ratio, in a ratio of 1: 3 to 1: 6 times (Ex. 200u lengthwise stretched film 5 times becomes 40u).

Este filme é laminado com uma ou mais camadas de Bopp ou Poliéster impressas ou metalizadas, formando uma estrutura flexível laminada com a característica de abertura fácil.This film is laminated with one or more layers of printed or metallised Bopp or Polyester, forming a flexible laminated structure with the easy-open feature.

Qualquer outra embalagem flexível laminada com duas ou mais camadas [sem este filme mono estirado não possui esta característica.Any other laminated flexible packaging with two or more layers [without this mono stretched film does not have this feature.

Claims (4)

1. Método de produção de uma estrutura laminada flexível contendo a impressão de um dos filmes em um equipamento de Rotogravura ou Flexografia ou com sistema de impressão hibrido, um filme de Bopp ou Poliéster transparente em reversão ou na frente com reserva de ponto de selagem, caracterizado pelo fato de que o produto resultante é laminado com um filme de Polietileno mono estirado, resultante do estiramento do l ilme de Polietileno de 90 a 340 micra em extrusora, no sentido longitudinal numa proporção de 1:3 a 1:6 vezes, dependendo da estrutura e grau de rasgo, levando o produto resultar te a um equipamento de estiro onde este filme de Polietileno é processado a quente sendo o puxador da máquina com velocidade de 3 a 6 vezes maior que o desbobinador, laminar esta estrutura de Bopp ou Poliester, impresso ou não, e laminado com o filme dé Polietileno mono estirado com um filme de Bopp metalizado em uma laminadora com ou sem solvente ou via coating, sendo que após a impressão e laminação da estrutura laminada flexível, cortam-jse e refilam-se as bobinas conforme plano de corte definido do produto final.1. Method of producing a flexible laminated structure containing the printing of one of the films on Rotogravure or Flexography equipment or with a hybrid printing system, a reversing or forward transparent Bopp or Polyester film with sealing point reservation; characterized in that the resulting product is laminated with a mono-stretched polyethylene film resulting from the stretching of the polyethylene film 90 to 340 microns in extruder longitudinally in a ratio of 1: 3 to 1: 6 times depending on of the structure and degree of tear, leading the product to a stretch equipment where this polyethylene film is hot processed with the machine handle being 3 to 6 times faster than the unwinder, laminating this Bopp or Polyester structure whether or not printed and laminated with mono-stretch polyethylene film with a metallised Bopp film in a laminator with or without solvent or coating, and after printing After rolling and laminating the flexible laminated structure, the coils are cut and refined according to the defined cutting plan of the final product. 2. Estrutura laminada flexível obtida pelo método da reivindicação 1, formada por uma ou mais camadas de poliéster ou polipropileno ou polipropileno b orientado, impressos ou não, caracterizada por conter uma camada formada pelo Ume de polietileno de 90 a 340 micra estirado no sentido longitudinal orientando as cadeias poliméricas em ijma proporção de 1:3 a 1:6 vezes.Flexible laminated structure obtained by the method of claim 1, consisting of one or more layers of printed or unprinted polyester or polypropylene or b-oriented polypropylene, characterized in that it contains a layer formed of 90 to 340 micron Ume of longitudinally stretched polyethylene orienting the polymer chains in a ratio of 1: 3 to 1: 6 times. 3. Filme de Polietileno mono estirado, caracterizado pelo fato do filme de Pblietileno com 90 a 3^0 micra ser processado em extrusora, que sofre aquecimento com a passagem do filfne por cilindros de diâmetros diferentes, mas com mesma velocidade, ocorrendo desta forma um estiramento longitudinal numa proporção de 1:3 a 1:6 vezes! de acordo com a estrutura e grau de rasgo.Mono-stretched polyethylene film, characterized in that the 90 to 3 ^ 0 micron Pbliethylene film is processed in an extruder, which undergoes heating as the film passes through cylinders of different diameters, but at the same speed, thus occurring. longitudinal stretch in a ratio of 1: 3 to 1: 6 times! according to the structure and degree of tear. 4. Embalagem formada pela estrutura laminada flexível descrita na reivindicação 2 caracterizada pelo fato de conter uma estrutura em camadas, constituída por uma camada de polietileno e uma ou mais camadas de poliéster ou polipropileno ou polipropileno bi orienjtado (Bopp), impressas ou não, sendo que filme de Polietileno corr 90 a 340 micra é processado em extrusora, que sofre aquecimento com a passagem do filme por cilindros de (diâmetros diferentes, mas com mesma velocidade, ocorrendo o estiramento longitudinal rjuma proporção de 1:3 a 1:6 vezes, de acordo com a estrutura e grau de rasgo.Packaging formed by the flexible laminated structure described in claim 2, characterized in that it contains a layered structure consisting of a polyethylene layer and one or more layers of polyester or polypropylene or bi-oriented polypropylene (Bopp), whether or not printed. which 90 to 340 micron polyethylene film is processed in an extruder, which is heated by passing the film through cylinders of (different diameters, but at the same speed, with longitudinal stretching occurring at a ratio of 1: 3 to 1: 6 times, according to the structure and degree of tear.
BRBR102013024227-6A 2013-09-20 2013-09-20 Method of producing a flexible laminate structure, thus obtained flexible laminate structure, mono stretched polyethylene film and packaging formed by the flexible laminate structure BR102013024227A2 (en)

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PCT/BR2014/000339 WO2015039203A1 (en) 2013-09-20 2014-09-18 Method for producing a flexible laminated structure, resulting flexible laminated structure, uniaxially stretched polyethylene film and package formed by the flexible laminated structure

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