CN101802294A - 由单轴向拉伸塑性带形成的涂层织物以及由其制成的袋 - Google Patents

由单轴向拉伸塑性带形成的涂层织物以及由其制成的袋 Download PDF

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Publication number
CN101802294A
CN101802294A CN200880106363A CN200880106363A CN101802294A CN 101802294 A CN101802294 A CN 101802294A CN 200880106363 A CN200880106363 A CN 200880106363A CN 200880106363 A CN200880106363 A CN 200880106363A CN 101802294 A CN101802294 A CN 101802294A
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Prior art keywords
fabric
coated fabric
sealant
coated
main body
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CN200880106363A
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CN101802294B (zh
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H·富尔斯特
P·斯科佩克
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Starlinger and Co GmbH
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Starlinger and Co GmbH
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    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7292—Textile or other fibrous material made from plastics coated
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73115—Melting point
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B29C66/73712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented mono-axially
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7377—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73775—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being crystalline
    • B29C66/73776—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being crystalline the to-be-joined areas of both parts to be joined being crystalline
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
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    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/90—Measuring or controlling the joining process
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    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/90—Measuring or controlling the joining process
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    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
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Abstract

本申请公开了一种涂层织物(11、11′)，其包含由单轴向拉伸聚合物带(12a，12b)形成的织物，尤其是聚烯烃或聚酯带，优选聚丙烯或聚对苯二甲酸乙二醇酯带。织物(12)涂覆有由熔点低于织物带材料结晶熔点的热塑性合成材料形成的密封层(13)。所述涂层织物(11、11′)特别适合于热风焊接、超声波焊接、热工具焊接、红外线焊接或激光束焊接技术。

Description

由单轴向拉伸塑性带形成的涂层织物以及由其制成的袋
本发明涉及如权利要求1前序部分所述的由单轴向拉伸塑性带得到的涂层织物。
此外，本发明涉及粘结由单轴向拉伸塑性带制得的涂层织物的方法。
最后，本发明涉及由塑性带获得的涂层织物制成的袋。
由单轴向拉伸塑性带得到的织物在包装工业中已经有很多应用，例如，用于生产包装袋。例如，从文献WO95/30598A1得知，已知的包装袋被做成盒形袋的形状。其中织物由单轴向拉伸的聚合物带组成，尤其是聚烯烃，优选聚丙烯带，其中，织物的一面或两面都可以涂覆热塑性合成材料，特别是聚烯烃。所述织物可以是圆形织机上生产的筒状环形织物或者平幅织物通过纵向焊接或者粘结接缝形成的筒。
使用上述由单轴向拉伸的塑性带得到的织物作为袋的主体，根据WO95/30598A1制备了袋，通过折叠织物端面将袋主体的至少一端形成矩形底面区域，通过加热，其底部区域通过热塑性合成材料(特别是聚烯烃或聚丙烯材料)的中间层粘结到由单轴向拉伸聚合物带获得的织物制成的盖片上，伴随加热作用的发生，小于底部区域的织物带材料和盖片厚度的30％由于所述加热作用导致聚合物分子呈现无定向排列，但剩余材料区域中分子取向仍旧存在。代替单独的盖片，在底部区域交叠的袋主体织物的折叠突出物(Faltlappen)也可以作为盖片。
在超过十年的时间里，符合上述条件将底部区域粘结到盖片上形成的织物制成的袋子，已经数百万次的向全世界证明了其用于包装各种块状材料的价值。
然而，已证明至关重要的是，只有当精密观测温度和加工速率时才能生产出满足所有强度需求的焊缝。
此外，当此类织物被焊接时，必须确保塑性带加热温度不超过它们的结晶熔点。原因在于在热工具焊接或超声波焊接时，无涂层或单层涂层织物接缝区域丧失了它的高强度，因为拉伸的带子在所需的焊接温度下丧失了单轴向取向。
针对此问题本发明提供一种比已知单轴向拉伸塑性带制成的织物更容易焊接的涂层织物，但仍然具有高强度焊接接点。特别是，新涂层织物将可以通过超声波焊接或热工具焊接，且在接缝区域以及焊接过程中大致保持较高的织物强度。这样的由单轴向拉伸塑性带得到的涂层织物将可用于所谓的成型、填充和密封(FFS)加工。
为解决该问题，本发明提供具有如权利要求1所述特征的涂层织物，提供具有如权利要求8所述特征的粘结涂层织物的方法以及提供具有如权利要求13所述特征的袋子。从属权利要求列举了本发明的优选实施方案。
根据本发明，在由单轴向拉伸聚合物带(尤其是聚烯烃或聚酯带，优选聚丙烯或聚对苯二甲酸乙二醇酯带)获得的织物上涂覆密封层，该密封层由熔点低于所述织物带材料的结晶熔点的热塑性合成材料获得。这样的涂层织物尤其适合焊接，其中加热作用无需从密封层的侧面进行，但热量可以穿过单轴向拉伸聚合物带制得的织物作用到密封层，使由单轴向拉伸聚合物带制得的织物不被加热到超过织物带材料的结晶熔点。这样生产出的焊接接缝具有高强度。
在文献WO95/30598中，公开了织物涂层的具体实施方案以及它们彼此之间的联系。例如，图9展示了另一种形式，由带状织物制成的盖片和聚烯烃(聚丙烯)涂层用袋突出物(Sackenlappen)彼此粘结，所述袋突出物由带织物和相同聚烯烃材料的涂层组成。为了此目的，加热彼此相对的涂覆面使增塑作用向下渗入2-40μm的深度，且牵拉通过两个冷却辊，此处层3b、4b彼此挤压。冷却辊对提供所需的冷却，以便带织物不受到任何加热引起的损害。因为加热从涂布侧进行，主要是涂层受热，这样，仅向下很低深度的带丧失它们分子链的取向。如WO95/30598图12所示，只要有一个织物被涂覆，就可以用上述加热织物涂层的方法焊接。这样，通过加热焊接使无涂层织物紧紧地粘结到具有涂层的织物上。
在WO95/30598中，也提及了乙烯和醋酸乙烯酯的共聚物，其通常被称为EVA，可以添加到由热塑性合成材料(特别是聚烯烃材料)组成的织物涂层上。所述EVA的熔点低于聚乙烯。通过添加EVA，涂层的可焊接性显著改善。然而，该文献中没有记载EVA的添加比例和熔点的进一步细节。特别是，显然没有考虑添加如此量的EVA，涂层熔点将低于织物带材料的结晶熔点，因为，只有在这种情况下焊接也可从织物侧进行，而这在WO95/30598中根本没有考虑。
当根据本发明在单轴向拉伸聚合物带得到的织物上设置密封层时出现一个问题，在大多数情况下，所述密封层与单轴向拉伸聚合物带得到的织物的粘附力很差。特别是，具有足够低熔点的纯聚乙烯不能粘结到由聚丙烯制成的带子上。为了能够不仅仅使用市售的密封层的特殊材料，并对带材的粘着力充分和熔点足够低，在本发明的一个实施方案中，设想在由单轴向拉伸聚合物带形成的织物和密封层之间设置聚合物材料形成的粘合层，其对所述织物和密封层均具有良好的粘合。为了改善焊接期间的可操作性，所述粘合层的熔点优选高于密封层的熔点。
根据本发明的涂层织物的进一步实施方案在很大程度上自由地调整焊接过程中的过程参数。在此实施方案中，织物带材料的结晶熔化温度高于120℃。
在一个廉价，但仍然良好的根据本发明的涂层织物的实施方案中，所述密封层包含具有低熔点的聚乙烯。可选地，所述密封层设计为由具有低熔点的特殊聚合物制成，如杜邦公司生产的产品Surlyn@1652-E。该产品确实比聚乙烯层更贵，但无须粘合层来粘附由单轴向拉伸聚合物带得到的织物。
在本发明优选实施方案中，所述粘合层包含能很好地与带材料粘结的聚丙烯。可以向聚丙烯中添加到聚乙烯，聚乙烯含量可达40体积％，优选含量达到20体积％。
为了涂层织物的可加工性和足够的强度，如果拉伸聚合物带厚度在20μm-80μm之间则被证明是有利的。另外，优选密封层和任选的粘合层的厚度分别在5μm和60μm之间。
本发明还包括通过焊接方法粘结根据本发明的涂层织物的方法。在这种情况下，两个涂层织物一个位于另一个的顶部以便密封层相互相对。从织物侧(即，从外部)加热至少一个织物，加热到低于织物带材料的结晶温度的温度，持续一段时间直到密封层发生熔化，其在熔化期间发生互相连接。熔化的密封层可以在压力的作用下发生连接，压力施加可以直接通过焊接元件或通过单独的压力产生构件(例如可以同时冷却的一对辊)。在这种情况下，可以用超声波致动器(Ultraschallaktuators)进行加热，即通过超声波焊接，利用加热元件，即通过热工具焊接，利用红外辐射器的方式，即通过红外线焊接或利用激光束源，即通过激光束焊接。
本发明也包括具有均根据本发明的涂层织物制造的袋主体和盖片的袋子，其通过热风焊接等在一定区域内彼此粘结，以便织物带保持它们分子链的取向。
现在基于非限制性实施方案，并参考附图进一步详细解释本发明。在图中：
图1显示根据本发明的涂层织物的第一实施方案的横截面；
图2显示根据本发明的涂层织物的第二实施方案的横截面；
图3显示根据本发明的焊接方法焊接根据本发明的两个涂层织物的示意图；
图4显示在根据本发明的两个织物上进行热风焊接过程的示意图；
图5显示根据本发明的由涂层环形织物制成的袋的透视图；且
图6显示根据本发明的由涂层平幅织物制成的具有纵向接缝的袋子。
在图1中，显示根据本发明的涂层织物11的第一实施方案的横截面。所述涂层织物11包括由单轴向拉伸聚合物带12a、12b得到的织物12，尤其是聚烯烃或聚酯带，优选聚丙烯或聚对苯二甲酸乙二醇酯带。作为示例的聚合物带12a、12b形成织物12的经线和纬线。带织物12上涂覆有由熔点低于织物带材料结晶熔点的热塑性合成材料形成的密封层13。例如，带12a、12b由聚丙烯组成，其结晶熔点典型地高于160℃。在第一个变化方案中，密封层13包括熔点约为105℃的聚乙烯(LD-PE)。聚乙烯的缺点是它与聚丙烯之间的粘附性差。根据本发明的涂层织物的第二实施方案显示了克服此缺陷的可能性，下面参考图2进行描述。然而，显示出低熔点且与聚丙烯适当粘附的特殊聚合物也适合用来替代聚乙烯作为密封层13。例如，杜邦公司生产的产品surlyn@1652-E就被证明是适合的特殊聚合物。它的熔点约为100℃。
图2显示根据本发明的涂层织物11的第二实施方案，其同样包括织物12和密封层13，织物12由单轴向拉伸聚合物带得到，特别是聚烯烃或聚酯带，优选聚丙烯或聚对苯二甲酸乙二醇酯带，密封层13由熔点低于织物带材料结晶熔点的热塑性合成材料形成。本实施方案的涂层织物11′不同于上述第一实施方案，区别在于在由单轴向拉伸聚合物带得到的织物12和密封层13之间设置对织物12和密封层13都有良好粘附性的附加粘合层14，附加粘合层14由聚合物材料形成。优选地，所述粘合层14的熔点高于密封层13的熔点。优选地，所述粘合层14包含聚丙烯，聚丙烯中添加含量可达40体积％的聚乙烯，优选含量达到20体积％。
根据本发明的所述涂层织物11、11′十分适合通过焊接相互连接，其中产生的焊接接头显示出高强度。因此，它们尤其非常适合用于生产袋子，特别是盒袋或盒阀门袋
Figure GPA00001105809700051
，如WO95/30958中所述。然而，与WO95/30598中公开的织物相比，它们也非常适合于超声波焊接、热工具焊接、红外线焊接或激光束焊接。例如平幅织物可以使用上述焊接方法中的一种在纵向粘结以形成环形织物。根据本发明的涂层织物的另一个应用领域是成型、填充和密封(FFS)加工。
现在基于图3，示意性地显示了图2中所描绘的两个涂层织物11′的相互焊接。首先，两个涂层织物11、11′一个位于另一个的顶部以便使它们的密封层13、13彼此相对。然后，至少一个涂层织物11′从由单轴向拉伸聚合物带得到的织物12的侧面加热，即从外侧，使用至少一种焊接元件15、16加热到低于织物带材料结晶熔化温度的温度(箭头T)。加热持续进行直到密封层13开始融化，在这种情况下，彼此紧密粘结，如图上虚线18所示区域。熔化密封层13、13的粘结通过施加压力的冷却辊对17、17来实现。然而，压力的施加也可以直接通过焊接元件15、16进行。为了帮助更好的理解，需要注意的是，在焊接过程中，两个涂层织物11、11′也匀速地穿过焊接元件15、16，即，就图3而言，从附图平面向外。如果焊接过程配置为超声波焊接，焊接元件15设计成超声波致动器，作为对应部的焊接元件16以铁砧形式成型。如果焊接过程配置为热工具焊接，焊接元件15设计成加热元件，且焊接元件16也设计为加热元件或承载部件(Auflager)。如果焊接过程配置为红外线焊接或激光束焊接，焊接元件15设计为红外辐射器或激光束源。
图5显示根据本发明的具有盒形状的袋子10。袋子10由上述根据本发明的具有2层或3层涂层的涂层织物11、11′制成的(参见图1和2)袋主体1组成。在此实施方案中，涂层织物设计成环状织物。端面，即所述盒形袋的底部或顶部区域通过折叠袋主体1的突出物4、4′、5、5′形成。如虚线部分所示，突出物4和5彼此稍稍重叠。此外，在突出物5′和4和5之间分别设置阀2，所述阀由片状或筒状材料(例如织物或膜)组成，且通过这种方式袋子被填满。如果袋子10被填满，填充材料对端面施加压力使阀2关闭。盖片3同样由上述根据本发明的2或3层涂层的涂层织物11、11′组成，盖片3被焊接在突出物4、5上。为此目的使用如下面进一步描述的热风焊接方法或上述焊接方法的一种，如超声波焊接、热工具焊接、红外线焊接或激光束焊接。根据本发明的袋子10的特殊特征是，焊接上盖片3后，带的分子链基本上依然保持它们的取向，因为仅密封层13和任选的粘合层14(全部或部分地)被融化。所以，袋子10表现出优异的强度。
在图6中，显示了根据本发明的袋子10′的另一个实施方案。与图5所示变化方案的不同主要在于作为袋主体1′，通过粘结平幅织物的纵向边缘9、9到纵向焊接缝或粘结接缝形成筒10。
图4示意性地显示了用热风焊接方法粘结袋主体1的端面到盖片3。在该示例实施方案中，袋主体1和盖片3由3层涂层织物11′组成，如图2所示。将盖片3提供给袋主体1，而两者都被拉着沿F方向通过一对彼此压合的冷却辊8、8。热风H通过喷嘴注入袋主体1和盖片3之间，喷嘴没有在图中示出。热风造成彼此相对的涂层织物11、11′的密封层融化。调节热风H的温度和输送速度F，使得两个涂层织物11、11′的密封层13、13确实融化，任选的粘合层14(参见图2)也融化，而织物12、12的带不融化(或相对地可以忽略的程度)。融化的密封层13、13通过两个辊8、8的接触压力粘结，且同时被辊8、8冷却，从而织物带12、12不会融化。
因为如此，带不会或几乎不会丧失它们的分子链取向度，没有由于热风焊接过程导致强度显著损失。

Claims (15)

1.涂层织物(11、11′)，其包含由单轴向拉伸聚合物带(12a、12b)得到的织物12，尤其是聚烯烃带或聚酯带，优选聚丙烯带或聚对苯二甲酸乙二醇酯带，其特征在于所述织物(12)上涂覆有由熔点低于所述织物带材料的结晶熔点的热塑性合成材料形成的密封层(13)。
2.根据权利要求1的涂层织物，其特征在于在所述由单轴向拉伸聚合物带得到的织物(12)和密封层(13)之间设置对织物(12)和密封层(13)两者都有良好粘合性能的粘合层(14)，该粘合层(14)由聚合物材料制成，且粘合层(14)的熔点优选高于所述密封层的熔点。
3.根据权利要求1或2的涂层织物，其特征在于所述织物带材料的结晶熔点高于120℃。
4.根据前述权利要求任一项的涂层织物，其特征在于所述密封层(13)包含聚乙烯。
5.根据权利要求1-3任一项的涂层织物，其特征在于所述密封层(13)包含具有低熔点的特殊聚合物层。
6.根据权利要求2-5任一项的涂层织物，其特征在于所述粘合层(14)包含聚丙烯。
7.根据权利要求6的涂层织物，其特征在于所述粘合层(14)包含添加了聚乙烯的聚丙烯，其中聚乙烯的含量可达40体积％，优选含量达到20体积％。
8.粘结根据权利要求1-7任一项的涂层织物(11、11′)的方法，其特征在于将两个涂层织物(11、11′)一个置于另一个顶部，使密封层(13)彼此相对，并从单轴向拉伸聚合物带得到的织物(12)的侧面加热至少一个涂层织物(11、11′)，加热到低于所述织物带材料的结晶熔点的温度，直到所述密封层(13)熔化。
9.根据权利要求8的方法，其特征在于所述至少一个涂层织物(11、11′)的加热利用超声波致动器进行。
10.根据权利要求8的方法，其特征在于所述至少一个涂层织物(11、11′)的加热利用加热元件进行。
11.根据权利要求8的方法，其特征在于所述至少一个涂层织物(11、11′)的加热利用红外辐射进行。
12.根据权利要求8的方法，其特征在于所述至少一个涂层织物(11、11′)的加热利用激光束进行。
13.袋子(10、10′)，其包括：
筒状袋主体(1、1′)，所述筒状袋主体由环状织物或沿纵向边缘粘结形成筒的平幅织物形成，其中袋主体的至少一端区域是通过折叠形成的常规矩形端面，和
用热塑性合成材料通过加热粘结到袋主体端面的盖片(3、6)，所述热塑性合成材料尤其是聚烯烃，优选聚乙烯材料，
其特征在于所述袋主体(1、1′)和盖片(3、6)包含根据权利要求1-7任一项的涂层织物(11、11′)，它们的密封层(13、13)彼此相对，通过加热融化且与相邻密封层(13)粘结后再次凝固。
14.根据权利要求13的袋子(10)，其特征在于所述盖片(3)设计作为单独的元件，其中优选地，折叠成端面的袋主体部分没有或不明显地彼此重叠。
15.根据权利要求13的袋子(11′)，其特征在于所述盖片(6)是所述袋主体的部件，由在端面的折叠过程中重叠端面突出物而形成。
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CA2697296C (en) 2015-11-03
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AT9823U1 (de) 2008-04-15
EP2188438B1 (de) 2012-06-06
BRPI0816653B1 (pt) 2019-05-21
JP2010538862A (ja) 2010-12-16
EP2188438B2 (de) 2018-10-31
TN2010000103A1 (en) 2011-09-26
US20100209024A1 (en) 2010-08-19
RU2010113910A (ru) 2011-10-20
UA96361C2 (ru) 2011-10-25
CO6270158A2 (es) 2011-04-20
EP2188438A1 (de) 2010-05-26
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KR20100061673A (ko) 2010-06-08
ZA201001430B (en) 2011-05-25
BRPI0816653A2 (pt) 2015-03-10
KR101234125B1 (ko) 2013-02-19
JP5391200B2 (ja) 2014-01-15
CA2697296A1 (en) 2009-03-19
CN101802294B (zh) 2012-12-26
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US9067364B2 (en) 2015-06-30
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