TW201634251A - 用於將撓性配件密封至撓性膜之方法 - Google Patents

用於將撓性配件密封至撓性膜之方法 Download PDF

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Publication number
TW201634251A
TW201634251A TW105107427A TW105107427A TW201634251A TW 201634251 A TW201634251 A TW 201634251A TW 105107427 A TW105107427 A TW 105107427A TW 105107427 A TW105107427 A TW 105107427A TW 201634251 A TW201634251 A TW 201634251A
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Taiwan
Prior art keywords
sealing
ethylene
substrate
seal
multilayer film
Prior art date
Application number
TW105107427A
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English (en)
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TWI703041B (zh
Inventor
馬可士 弗蘭科
布魯諾 魯費托 佩雷拉
萊蒙德 格斯特納
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陶氏全球科技有限責任公司
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Publication of TW201634251A publication Critical patent/TW201634251A/zh
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Publication of TWI703041B publication Critical patent/TWI703041B/zh

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Classifications

    • 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14—Details; Accessories therefor
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/032—Mechanical after-treatments
    • B29C66/0324—Reforming or reshaping the joint, e.g. folding over
    • 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/326—Shaping the burr, e.g. by the joining tool
    • B29C66/3262—Shaping the burr, e.g. by the joining tool as after-treatment, e.g. by a separate tool
    • 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
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial joints
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • B29C66/53263—Enclosing spouts between the walls of bags, e.g. of medical bags said spouts comprising wings, e.g. said spouts being of ship-like or canoe-like form to avoid leaks in the corners
    • 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
    • B29C66/723—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 being multi-layered
    • 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
    • B29C66/731—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
    • B29C66/7315—Mechanical properties
    • 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
    • B29C66/81—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
    • B29C66/81431—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 comprising a single cavity, e.g. a groove
    • 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
    • B29C66/81—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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B29C66/90—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
    • B29C66/914—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
    • 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
    • B29C66/91421—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 joining tools
    • 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
    • B29C66/90—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
    • 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
    • B29C66/91921—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 in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—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 in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91933—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 in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined higher than said fusion temperature
    • 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
    • B29C66/90—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
    • 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
    • B29C66/91921—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 in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—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 in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91935—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 in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined lower than said fusion temperature
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92441—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time
    • B29C66/92443—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile
    • B29C66/92445—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time following a pressure-time profile by steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
    • B31B70/844—Applying rigid valves, spouts, or filling tubes
    • 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
    • B32B1/00—Layered products having a non-planar shape
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Abstract

本發明提供一種方法。在一實施例中，所述方法包含A.提供具有一基底之一配件，所述基底包括一乙烯/α-烯烴多嵌段共聚物；B.將所述基底放置在兩個相對多層膜之間，各多層膜具有一各別密封層，所述密封層包括一基於烯烴之聚合物；C.用相對經加熱之扁平密封條將所述基底扁平密封至各多層膜，所述扁平密封在扁平化基底末端處形成相對密封接頭；及D.用相對彎曲密封條點密封所述相對密封接頭。

Description

用於將撓性配件密封至撓性膜之方法
本發明係關於一種用於在兩個撓性膜之間密封撓性配件之方法。
已知具有剛性傾倒口之撓性小袋，其用於儲存及遞送可流動材料，常常稱為「傾倒小袋(pour-pouch)」。諸多習知傾倒小袋利用剛性傾倒口，其中噴口之基底具有小翼。各小翼為垂直於基底之結構，各小翼自噴口之環形基底徑向延伸開去(沿相對方向)。小翼用於增加環形基底之表面面積，以便促進噴口與撓性包裝膜之間的黏著力。
然而，小翼存在問題，因為其需要專門的熱密封條以有效地將小翼密封至撓性膜包裝。專門的熱密封條需要與噴口基底及小翼之形狀配合之獨特形狀。另外，熱密封方法需要噴口與膜之間的精確及配合對準以確保噴口與膜取向平行對準。
如此，由於(1)專門的熱密封設備之費用，(2)精確密封條-小翼對準之生產停機時間，(3)精確噴口-膜對準所需的生產停機時間，(4)歸因於未對準之故障率(洩漏)及(5)在傾倒小袋生產之各階段所需的品質控制步驟，撓性 小袋之生產具有低效性。
本領域認識到傾倒小袋生產過程中需要替代方法。本領域進一步認識到需要避免具有小翼之噴口之生產缺點之改良的傾倒口。
本發明提供一改良的配件及傾倒小袋之伴隨改良的配件密封。本發明配件減少用於生產配件自身之材料量且亦簡化傾倒小袋生產方法。
本發明提供一種方法。在一實施例中，所述方法包含：A.提供具有一基底之一配件，所述基底包括一乙烯/α-烯烴多嵌段共聚物；B.將所述基底放置在兩個相對多層膜之間，各多層膜具有一各別密封層，所述密封層包括一基於烯烴之聚合物；C.用相對經加熱之扁平密封條將所述基底扁平密封至各多層膜，所述扁平密封在扁平化基底末端處形成相對密封接頭；及D.用相對彎曲密封條點密封所述相對密封接頭。
本發明之一優勢為由乙烯/α-烯烴多嵌段共聚物形成、實現薄壁基底之一配件。
本發明之一優勢為由乙烯/α-烯烴多嵌段共聚物形成之一配件，其為基底提供足夠的完整性以經受住熱密封期間之壓縮及足夠的回彈性以在熱密封後彈回一打開位置。
本發明之一優勢為一種傾倒小袋生產方法，其不需要用於熱密封之精確的密封條-小翼對準。
本發明之一優勢為一用於傾倒小袋之配件，其利用與用於剛性傾倒口之習知小翼基底中所使用之聚合材料量相比更少的聚合材料。
本發明之一優勢為一種傾倒小袋生產方法，其相比於利用具有小翼之噴口之傾倒小袋生產方法，需要更短時間(更大效率)及更少故障(更高生產率)。
本發明之一優勢為一撓性配件，其具有回彈性以在熱密封期間完全收縮後彈回一打開位置，所述配件由與密封層聚烯烴相容之乙烯/α-烯烴多嵌段共聚物製成。
定義
本文中所有提及之元素週期表應係指由CRC出版公司(CRC Press,Inc.)2003年出版且版權所有的元素週期表。此外，任何提及之一或多個族應為使用IUPAC系統給族編號的在此元素週期表中反映之一或多個族。除非相反陳 述，自上下文暗示或本領域慣用，否則所有份數及百分比均按重量計。出於美國專利實務之目的，任何本文中所參考之專利、專利申請案或公開案之內容均以全文引用之方式併入(或其等效US版本如此以引用之方式併入)，尤其在此項技術中之合成技術、定義(在與本發明中提供之任何定義一致的程度上)及常識之揭示方面。
本文所揭示之數值範圍包含自且包含較低值及較高值之所有值。對於含有確切值之範圍(例如1或2，或3至5，或6或7)，任何兩個確切值之間的任何子範圍包含在內(例如1至2；2至6；5至7；3至7；5至6等)。
除非相反陳述，自上下文暗示或本領域慣用，否則所有份數及百分比均按重量計，且所有測試方法均為截至本發明之申請日為止的現行方法。
如本文所使用之術語「組合物」係指包括組合物之材料以及由所述組合物之材料形成的反應產物及分解產物之混合物。
術語「包括」、「包含」、「具有」及其衍生詞並不意圖排除任何額外組分、步驟或程序之存在，無論其是否具體地揭示。為了避免任何疑問，除非相反陳述，否則經由使用術語「包括」，所主張之所有組合物均可包含任何額外添加劑、佐劑或化合物，無論聚合或以其他方式。相比之下，術語「主要由......組成」自任何隨後列舉之範圍中排除任何其他組分、步驟或程序，除了對可操作性而言不是必不可少的彼等者之外。術語「由......組成」排除未具體敍述或列出之任何組分、步驟或程序。
密度根據ASTM D 792量測。
彈性恢復量測如下。使用InstronTM通用測試機器，在300% min-1變形速率下，在21℃下，量測單軸向拉伸之應力-應變行為。使用ASTM D 1708微拉伸樣本，自加載繼而卸載循環至300%應變測定300%彈性恢復。在使用使加載返回至基線之應變之卸載循環之後計算所有實驗之恢復百分比。恢復百分比定義為：恢復%=100×(Ef-Es)/Ef
其中Ef為循環加載所採用之應變，且Es為在卸載循環之後加載返回至基線之應變。
如本文所使用之「基於乙烯之聚合物」為含有超過50莫耳%聚合乙烯單體(以可聚合單體之總量計)且視情況可含有至少一種共聚單體之聚合物。
熔體流動速率(MFR)根據ASTM D 1238，條件280℃/2.16kg(g/10min)量測。
熔融指數(MI)根據ASTM D 1238，條件190℃/2.16kg(g/10min)量測。
肖氏A硬度根據ASTM D 2240量測。
如本文所使用之Tm或「熔點」(參考所繪製之DSC曲線形狀，亦稱為熔融峰)典型地藉由用於量測如USP 5,783,638中所描述之聚烯烴之熔點或峰值之DSC(差示掃描熱量測定)技術量測。應注意，包括兩種或兩種以上聚烯烴之諸多摻合物將具有一個以上熔點或峰，諸多單獨聚烯烴將僅包括一個熔點或峰。
如本文所使用之「基於烯烴之聚合物」為含有超 過50莫耳%聚合烯烴單體(以可聚合單體之總量計)且視情況可含有至少一種共聚單體之聚合物。基於烯烴之聚合物之非限制性實例包含基於乙烯之聚合物及基於丙烯之聚合物。
「聚合物」為藉由使無論相同或不同類型、以聚合形式提供構成聚合物之多個及/或重複「單元」或「單體單元」之單體聚合而製備的化合物。因此，通用術語聚合物包涵術語均聚物，其通常用於指代僅由一種類型之單體製備之聚合物；及術語共聚物，其通常用於指代由至少兩種類型之單體製備之聚合物。其亦包涵共聚物之所有形式，例如無規、嵌段等。術語「乙烯/α-烯烴聚合物」及「丙烯/α-烯烴聚合物」指示如上文所描述，分別地由乙烯或丙烯及一或多種額外的可聚合α-烯烴單體聚合製備之共聚物。應注意，儘管聚合物通常稱為「由」一或多種指定單體「製成」，「基於」指定單體或單體類型，「含有」指定單體含量或其類似者，但在此情形下，術語「單體」應理解為指代指定單體之聚合遺留物且不指代未聚合物質。一般而言，本文中之聚合物係指基於為對應單體之聚合形式之「單元」。
「基於丙烯之聚合物」為含有超過50莫耳%聚合丙烯單體(以可聚合單體之總量計)且視情況可含有至少一種共聚單體之聚合物。
10‧‧‧配件
12‧‧‧基底
13a‧‧‧基底上部
13b‧‧‧基底底部
14‧‧‧頂部
15‧‧‧基底壁
16‧‧‧多層膜
18‧‧‧多層膜
20‧‧‧扁平密封條
22‧‧‧扁平密封條
23‧‧‧扁平化末端
24‧‧‧密封接頭
25‧‧‧扁平化末端
26‧‧‧密封接頭
28‧‧‧填縫劑
30‧‧‧焊接構造
32‧‧‧彎曲密封條
34‧‧‧彎曲密封條
36‧‧‧小翼
38‧‧‧小翼
40‧‧‧共用外圍邊緣
42‧‧‧撓性容器
44‧‧‧氣密密封
A‧‧‧壁厚度
B‧‧‧線性組態
C‧‧‧圓形或橢圓形橫截面
D‧‧‧彎曲密封條直徑
E‧‧‧基底直徑
F‧‧‧小翼長度
G‧‧‧箭頭
圖1為根據本發明實施例之配件之透視圖。
圖2為包夾在根據本發明實施例之兩個多層膜之間的配件之正視圖。
圖3為根據本發明實施例之扁平密封程序之正視圖。
圖4為根據本發明實施例之焊接構造之正視圖。
圖5為根據本發明實施例之點密封程序之正視圖。
圖6為密封至根據本發明實施例之多層膜之圖1之配件的正視圖。
圖7為根據本發明實施例之撓性容器之透視圖。
本發明提供一種方法。在一實施例中，所述方法包含：A.提供具有一基底之一配件，所述基底包括一乙烯/α-烯烴多嵌段共聚物； B.將所述基底放置在兩個相對多層膜之間，各多層膜具有一各別密封層，所述密封層包括一基於烯烴之聚合物；C.用相對經加熱之扁平密封條將所述基底扁平密封至各多層膜，所述扁平密封在扁平化基底末端處形成相對密封接頭；及D.用相對彎曲密封條點密封所述相對密封接頭。
A.配件
所述方法包含提供配件10。配件10具有基底12及頂部14，如圖1中所示。配件10可由一或多種(亦即摻合物)聚合材料製成。基底12含有乙烯/α-烯烴多嵌段共聚物或以其他方式由乙烯/α-烯烴多嵌段共聚物形成。基底12可由聚合摻合物製成，所述聚合摻合物由乙烯/α-烯烴多嵌段共聚物及一或多種額外聚合物構成。用於與乙烯/α-烯烴多嵌段共聚物摻合之適合的材料之非限制性實例包含低密度聚乙烯(LDPE)、線性低密度聚乙烯(LLDPE)、高密度聚乙烯(HDPE)、乙烯乙酸乙烯酯(EVA)、乙烯丙烯酸甲酯(EMA)、乙烯丙烯酸共聚物(EAA)、丙烯均聚物、丙烯共聚物、丙烯抗衝擊共聚物。
替代地，基底12僅由乙烯/α-烯烴多嵌段共聚物製得。頂部14可包含適合的結構(諸如螺紋)以便與封閉件連接。
基底12具有橢圓形橫截面形狀。在一實施例中，基底12(預密封)之橫截面形狀為圓形或實質上圓形的。
在一實施例中，基底12排除剛性類型基底，諸如舟形基底及/或小翼型基底。
在一實施例中，基底僅由乙烯/α-烯烴多嵌段共聚物構成或以其他方式僅由乙烯/α-烯烴多嵌段共聚物形成。
在一實施例中，整個配件10(基底12及頂部14)僅由乙烯/α-烯烴多嵌段共聚物構成或以其他方式僅由乙烯/α-烯烴多嵌段共聚物形成。
在一實施例中，基底具有厚度為A之壁15，如圖2中所示。厚度A為0.3mm，或0.4mm，或0.5mm，或0.6mm，或0.7mm，或0.8mm，或0.9mm，或1.0mm至1.2mm，或1.5mm，或1.7mm，或1.9mm，或2.0mm。在另一實施例中，壁15僅由乙烯/α-烯烴多嵌段共聚物構成且具有前述厚度A。
基底12(完全或部分)由乙烯/α-烯烴多嵌段共聚物形成。術語「乙烯/α-烯烴多嵌段共聚物」包含呈聚合形式之乙烯及一或多種可共聚α-烯烴共聚單體，其特徵為兩種或兩種以上化學或物理特性不同之聚合的單體單元之多個嵌段或鏈段。術語「乙烯/α-烯烴多嵌段共聚物」包含具有兩個嵌段(二嵌段)及超過兩個嵌段(多嵌段)之嵌段共聚物。術語「互聚物」及「共聚物」在本文中可互換使用。當在共聚物中提及「乙烯」或「共聚單體」之量時，應理解此意謂其聚合單元。在一些實施例中，乙烯/α-烯烴多嵌段共聚物可由下式表示：(AB)n
其中n是至少1，較佳為大於1之整數，諸如2、3、4、5、10、15、20、30、40、50、60、70、80、90、100或更大，「A」表示硬嵌段或鏈段且「B」表示軟嵌段或鏈段。較佳地，A及 B以與實質上分支鏈或實質上星形形式相反之實質上線性形式或線性方式連接或共價鍵結。在其他實施例中，A嵌段及B嵌段沿聚合物鏈無規分佈。換言之，嵌段共聚物通常並不具有如下結構：AAA-AA-BBB-BB
在另其他實施例中，嵌段共聚物通常並不具有包括不同共聚單體之第三種類型的嵌段。在又其他實施例中，嵌段A及嵌段B中之每一者具有實質上無規分佈在嵌段內之單體或共聚單體。換言之，嵌段A及嵌段B均不包括兩個或兩個以上具有獨特組成之子鏈段(或子嵌段)，諸如端部鏈段，其具有與嵌段之其餘部分實質上不同之組成。
較佳地，乙烯包括整個嵌段共聚物之大部分莫耳分數，亦即，乙烯包括至少整個聚合物之50莫耳%。更佳地，乙烯包括至少60莫耳%、至少70莫耳%或至少80莫耳%，其中整個聚合物之實質性其餘部分包括至少一種較佳為具有3個或更多個碳原子之α-烯烴的其他共聚單體。在一些實施例中，乙烯/α-烯烴多嵌段共聚物可包括50mol%至90mol%乙烯，或60mol%至85mol%，或65mol%至80mol%。對於諸多乙烯/辛烯多嵌段共聚物，組合物包括大於整個聚合物之80莫耳%之乙烯含量及整個聚合物之10至15莫耳%，或15至20莫耳%之辛烯含量。
乙烯/α-烯烴多嵌段共聚物包含不同量之「硬」鏈段及「軟」鏈段。「硬」鏈段為聚合單元之嵌段，其中乙烯以按至多100重量%之聚合物之重量計大於90重量%，或95重量%，或大於95重量%，或大於98重量%之量存在。換言之， 硬鏈段中之共聚單體含量(除乙烯外之單體含量)按聚合物之重量計小於10重量%，或5重量%，或小於5重量%，或小於2重量%且可低至零。在一些實施例中，硬鏈段包含衍生自乙烯之所有或實質上所有單元。「軟」鏈段為聚合單元之嵌段，其中共聚單體含量(除乙烯外之單體含量)按聚合物之重量計大於5重量%，或大於8重量%，大於10重量%，或大於15重量%。在一些實施例中，軟鏈段中之共聚單體含量可為大於20重量%，大於25重量%，大於30重量%，大於35重量%，大於40重量%，大於45重量%，大於50重量%，或大於60重量%，且可高達100重量%。
軟鏈段可以乙烯/α-烯烴多嵌段共聚物之總重量之1重量%至99重量%，或乙烯/α-烯烴多嵌段共聚物之總重量之5重量%至95重量%，10重量%至90重量%，15重量%至85重量%，20重量%至80重量%，25重量%至75重量%，30重量%至70重量%，35重量%至65重量%，40重量%至60重量%，或45重量%至55重量%存在於乙烯/α-烯烴多嵌段共聚物中。相反地，硬鏈段可以類似範圍存在。軟鏈段重量百分比及硬鏈段重量百分比可基於獲自DSC或NMR之資料計算。此類方法及計算揭示於例如2006年3月15日以Colin L.P.Shan,Lonnie Hazlitt等人之名義申請且轉讓給陶氏全球技術公司(Dow Global Technologies Inc.)之標題為「乙烯/α-烯烴嵌段互聚物(Ethylene/α-Olefin Block Inter-polymers)」的美國專利第7,608,668號中，所述專利之揭示內容以全文引用之方式併入本文中。特定言之，可如US 7,608,668之第57欄至第63欄中所描述，測定硬鏈段及軟鏈段重量百分比及共 聚單體含量。
乙烯/α-烯烴多嵌段共聚物為包括兩個或兩個以上較佳以線性方式接合(或共價鍵結)之化學上相異的區域或鏈段(稱為「嵌段」)之聚合物，亦即，包括相對於聚合烯系官能團端對端接合而非以側接或接枝形式接合之化學上經區分單元之聚合物。在一實施例中，所述嵌段在以下方面不同：所併入之共聚單體之量或類型、密度、結晶度、可歸因於此類組成之聚合物之微晶尺寸、立體異構性(等規或間規)之類型或程度、區域規則性或區域不規則性、支化量(包含長鏈支化或超支化)、均質性或任何其他化學或物理特性。相比於包含藉由連續單體添加、流變催化劑或陰離子聚合技術產生之互聚物之先前技術的嵌段互聚物，本發明乙烯/α-烯烴多嵌段共聚物之特徵為兩種聚合物多分散性(PDI或Mw/Mn或MWD)之獨特分佈、多分散嵌段長度分佈及/或多分散嵌段數目分佈，其在一實施例中歸因於與用於其製備之多種催化劑組合之梭移劑之作用。
在一實施例中，乙烯/α-烯烴多嵌段共聚物在連續方法中產生且具有1.7至3.5，或1.8至3，或1.8至2.5，或1.8至2.2之多分散指數(Mw/Mn)。當在分批或半分批方法中產生時，乙烯/α-烯烴多嵌段共聚物具有1.0至3.5，或1.3至3，或1.4至2.5，或1.4至2之Mw/Mn。
另外，乙烯/α-烯烴多嵌段共聚物具有擬合舒爾茨-弗洛里分佈(Schultz-Flory distribution)而非泊松分佈(Poisson distribution)之PDI(或Mw/Mn)。本發明乙烯/α-烯烴多嵌段共聚物具有多分散嵌段分佈以及嵌段尺寸之多分 散分佈兩者。此導致形成具有改良且可區別的物理特性之聚合物產物。多分散嵌段分佈之理論益處先前已在Potemkin,Physical Review E(1998)57(6)，第6902-6912頁及Dobrynin,J.Chem.Phvs.(1997)107(21)，第9234-9238頁中建模且論述。
在一實施例中，本發明乙烯/α-烯烴多嵌段共聚物具有嵌段長度之最大可能分佈。
在另一實施例中，本發明之乙烯/α-烯烴多嵌段共聚物，尤其在連續溶液聚合反應器中製得之彼等者具有嵌段長度之最大可能分佈。在本發明之一個實施例中，乙烯多嵌段互聚物定義為具有：(A)約1.7至約3.5之Mw/Mn，以攝氏度計之至少一個熔點Tm及以公克/立方公分計之密度d，其中Tm及d之數值對應於以下關係式：Tm>-2002.9+4538.5(d)-2422.2(d)2，或(B)約1.7至約3.5之Mw/Mn，且其特徵為以J/g計之熔化熱△H及以攝氏度計之差量△T，其定義為最高DSC峰與最高結晶分析分餾(「CRYSTAF」)峰之間的溫差，其中△T及△H之數值具有以下關係式：對於大於零且至多130J/g之△H而言，△T>-0.1299△H+62.81
對於大於130J/g之△H而言，△T48℃
其中所述CRYSTAF峰使用至少5%累積聚合物測定，且若小於5%聚合物具有可鑑別的CRYSTAF峰，則CRYSTAF溫度為30℃；或(C)在300百分比應變及1次循環下用壓縮模 製乙烯/α-烯烴互聚物膜量測之以百分比計之彈性恢復Re，且具有以公克/立方公分計之密度d，其中當乙烯/α-烯烴互聚物實質上不含交聯相時，Re及d之數值滿足以下關係式：Re>1481-1629(d)；或(D)具有當使用TREF分餾時在40℃與130℃之間溶離之分子量溶離份，其特徵在於溶離份之莫耳共聚單體含量比在相同溫度之間溶離之可比無規乙烯互聚物溶離份高至少5%，其中所述可比無規乙烯互聚物具有相同共聚單體且其熔融指數、密度及莫耳共聚單體含量(以整個聚合物計)在乙烯/α-烯烴互聚物之10%內；或(E)具有在25℃下之儲存模數G'(25℃)及在100℃下之儲存模數G'(100℃)，其中G'(25℃)與G'(100℃)之比率在約1：1至約9：1範圍內。
乙烯/α-烯烴多嵌段共聚物亦可具有：(F)當使用TREF分餾時在40℃與130℃之間溶離之分子溶離份，其特徵在於溶離份具有至少0.5且至多約1之嵌段指數及大於約1.3之分子量分佈Mw/Mn；或(G)大於零且至多約1.0之平均嵌段指數及大於約1.3之分子量分佈Mw/Mn。
適用於製備本發明乙烯/α-烯烴多嵌段共聚物之適合的單體包含乙烯及一或多種除乙烯外之添加可聚合單體。適合的共聚單體之實例包含具有3至30或3至20個碳原子之直鏈或分支鏈α-烯烴，諸如丙烯、1-丁烯、1-戊烯、3-甲基-1-丁烯、1-己烯、4-甲基-1-戊烯、3-甲基-1-戊烯、1-辛烯、1-癸烯、1-十二烯、1-十四烯、1-十六烯、1-十八烯及1- 二十烯；具有3至30或3至20個碳原子之環烯烴，諸如環戊烯、環庚烯、降冰片烯、5-甲基-2-降冰片烯、四環十二烯及2-甲基-1,4,5,8-二甲橋-1,2,3,4,4a,5,8,8a-八氫萘；二烯烴及聚烯烴，諸如丁二烯、異戊二烯、4-甲基-1,3-戊二烯、1,3-戊二烯、1,4-戊二烯、1,5-己二烯、1,4-己二烯、1,3-己二烯、1,3-辛二烯、1,4-辛二烯、1,5-辛二烯、1,6-辛二烯、1,7-辛二烯、亞乙基降冰片烯、乙烯基降冰片烯、二環戊二烯、7-甲基-1,6-辛二烯、4-亞乙基-8-甲基-1,7-壬二烯及5,9-二甲基-1,4,8-癸三烯；及3-苯基丙烯、4-苯基丙烯、1,2-二氟乙烯、四氟乙烯及3,3,3-三氟-1-丙烯。
乙烯/α-烯烴多嵌段共聚物可經由諸如美國專利第7,858,706號中所描述之鏈梭移方法產生，所述專利以引用之方式併入本文中。特定言之，適合的鏈梭移劑及相關資訊在第16欄第39行至第19欄第44行中列出。適合的催化劑描述於第19欄第45行至第46欄第19行中且適合的助催化劑描述於第46欄第20行至第51欄第28行中。所述方法描述於整個文獻中，但尤其在第51欄第29行至第54欄第56行中。所述方法亦描述於例如以下各者中：美國專利第7,608,668號、US 7,893,166及US 7,947,793。
在一實施例中，乙烯/α-烯烴多嵌段共聚物具有硬鏈段及軟鏈段且定義為具有：1.7至3.5之Mw/Mn，以攝氏度計之至少一個熔點Tm及以公克/立方公分計之密度d，其中Tm及d之數值對應於以下關係式：Tm<-2002.9+4538.5(d)-2422.2(d)2， 其中d為0.86g/cc，或0.87g/cc，或0.88g/cc至0.89g/cc；且Tm為80℃，或85℃，或90℃至95℃，或99℃，或100℃，或105℃至110℃，或115℃，或120℃，或125℃。
在一實施例中，乙烯/α-烯烴多嵌段共聚物為乙烯/辛烯多嵌段共聚物且具有以下特性(i)-(ix)中之一者、一些、任何組合或全部：
(i)80℃，或85℃，或90℃至95℃，或99℃，或100℃，或105℃至110℃，或115℃，或120℃，或125℃之熔融溫度(Tm)；
(ii)0.86g/cc，或0.87g/cc，或0.88g/cc至0.89g/cc之密度；
(iii)50-85wt%軟鏈段及40-15wt%硬鏈段；
(iv)軟鏈段中10mol%，或13mol%，或14mol%，或15mol%至16mol%，或17mol%，或18mol%，或19mol%，或20mol%辛烯；
(v)硬鏈段中0.5mol%，或1.0mol%，或2.0mol%，或3.0mol%至4.0mol%，或5mol%，或6mol%，或7mol%，或9mol%辛烯；
(vi)1g/10min，或2g/10min，或5g/10min，或7g/10min至10g/10min，或15g/10min至20g/10min之熔融指數(MI)；
(vii)65，或70，或71，或72至73，或74，或75，或77，或79，或80之肖氏A硬度；
(Viii)在300% min-1變形速率下在21℃下，如 根據ASTM D 1708所量測之50%，或60%至70%，或80%，或90%之彈性恢復(Re)。
(ix)嵌段之多分散分佈及嵌段尺寸之多分散分佈。
在一實施例中，乙烯/α-烯烴多嵌段共聚物為乙烯/辛烯多嵌段共聚物。
本發明乙烯/α-烯烴多嵌段共聚物可包括兩個或兩個以上本文所揭示之實施例。
在一實施例中，乙烯/辛烯多嵌段共聚物以商品名INFUSETM出售，可獲自美國密歇根州密德蘭陶氏化學公司(The Dow Chemical Company,Midland,Michigan,USA)。在另一實施例中，乙烯/辛烯多嵌段共聚物為INFUSETM 9817。
在一實施例中，乙烯/辛烯多嵌段共聚物為INFUSETM 9500。
在一實施例中，乙烯/辛烯多嵌段共聚物為INFUSETM 9507。
B.多層膜
所述方法包含在兩個相對多層膜之間放置配件基底。將基底12放置或以其他方式安置在兩個相對多層膜(多層膜16與多層膜18)之間，如圖2中所示。各多層膜具有含有基於烯烴之聚合物之各別密封層。
在一實施例中，各多層膜為撓性的且具有至少兩個或至少三個層。撓性多層膜為彈性、撓性、可變形且可彎曲的。用於各多層膜之結構及組成可相同或不同。舉例而言，兩個相對多層膜中之每一者可由單獨網製成，各網具有獨特 結構及/或獨特組成、修飾面層或印記。替代地，各多層膜可為相同結構及相同組成。
在一實施例中，各多層膜16、18為具有相同結構及相同組成之撓性多層膜。
各撓性多層膜16、18可為(i)共擠多層結構或(ii)層壓件或(iii)(i)及(ii)之組合。在一實施例中，各撓性多層膜16、18具有至少三個層：密封層、外層及之間的連接層。連接層使密封層與外層鄰接。撓性多層膜可包含一或多個安置於密封層與外層之間的視情況存在之內層。
在一實施例中，撓性多層膜為具有至少兩個或三個或四個或五個或六個或七至八個或九個或10個或11個或更多個層之共擠膜。例如用於建構膜之一些方法係藉由鑄造共擠壓或吹塑共擠壓方法、黏著劑層壓、擠壓層壓、熱層壓及塗佈，諸如氣相沈積。此等方法之組合亦為可能的。除聚合材料外，膜層亦可包括添加劑，諸如穩定劑、助滑添加劑、防黏添加劑、加工助劑、澄清劑、成核劑、顏料或著色劑、填充劑及增強劑及如包裝工業中常用之類似物。特別有用的是選擇具有適合的官能及或光學特性之添加劑及聚合材料。
密封層為能夠使膜彼此密封且能夠密封至配件之材料。用於密封層適合的聚合材料之非限制性實例包含基於烯烴之聚合物(包含任何直鏈或分支鏈乙烯/C3-C10 α-烯烴共聚物)、基於丙烯之聚合物(包含塑性體及彈性體、無規丙烯共聚物、丙烯均聚物及丙烯抗衝擊共聚物)、基於乙烯之聚合物(包含塑性體及彈性體、高密度聚乙烯(「HDPE」)、低密度聚乙烯(「LDPE」)、線性低密度聚乙烯(「LLDPE」)、中 密度聚乙烯(「MDPE」)、乙烯-丙烯酸或乙烯-甲基丙烯酸及其與鋅、鈉、鋰、鉀、鎂鹽之離聚物、乙烯乙酸乙烯酯共聚物)及其摻合物。
用於外層適合的聚合材料之非限制性實例包含用於製得層壓以及共擠膜之雙軸或單軸取向膜之彼等者。一些非限制性聚合材料實例為雙軸取向之聚對苯二甲酸乙二酯(OPET)、單軸取向之耐綸(nylon)(MON)、雙軸取向之耐綸(BON)及雙軸取向之聚丙烯(BOPP)。出於結構性益處，適用於構建膜層之其他聚合材料為聚丙烯(諸如丙烯均聚物、無規丙烯共聚物、丙烯抗衝擊共聚物、熱塑性聚丙烯(TPO)及其類似者、基於丙烯之塑性體(例如VERSIFYTM或VISTAMAXTM))、聚醯胺(諸如耐綸6、耐綸6,6、耐綸6,66、耐綸6,12、耐綸12等)、聚乙烯降冰片烯、環烯烴共聚物、聚丙烯腈、聚酯、共聚酯(諸如PETG)、纖維素酯、聚乙烯及乙烯之共聚物(例如基於乙烯辛烯共聚物之LLDPE，諸如DOWLEXTM)、其摻合物及其多層組合。
用於連接層適合的聚合材料之非限制性實例包含官能化基於乙烯之聚合物，諸如乙烯-乙酸乙烯酯(「EVA」)；順丁烯二酸酐接枝至聚烯烴之聚合物，諸如任何聚乙烯、乙烯-共聚物或聚丙烯；及乙烯丙烯酸酯共聚物，諸如乙烯丙烯酸甲酯(「EMA」)、含縮水甘油基乙烯共聚物；基於丙烯及乙烯之烯烴嵌段共聚物(OBC)，諸如INTUNETM(PP-OBC)及INFUSETM(PE-OBC)，兩者均可獲自陶氏化學公司及其摻合物。
撓性多層膜可包含額外層，其可有助於結構完整 性或提供特定特性。額外層可藉由直接手段或藉由使用連接至相鄰聚合物層之適當的連接層添加。可向結構中添加可提供額外機械效能(諸如硬度或不透明度)之聚合物以及可提供氣體障壁特性或耐化學性之聚合物。
用於視情況存在之障壁層適合的材料之非限制性實例包含偏氯乙烯及丙烯酸甲酯、甲基丙烯酸甲酯或氯乙烯之共聚物(例如可購自陶氏化學公司之SARANTM樹脂)；乙烯基乙烯乙烯醇(EVOH)、金屬箔(諸如鋁箔)。替代地，當用於層壓多層膜中時，經改質聚合膜，諸如諸如BON、OPET或OPP膜上之蒸氣沈積之鋁或氧化矽，可用於獲得障壁特性。
在一實施例中，撓性多層膜包含密封層，其選自LLDPE(以商標名DOWLEXTM(陶氏化學公司)出售)、單點LLDPE(實質上線性或線性烯烴聚合物，包含以商標名AFFINITYTM或ELITETM(陶氏化學公司)出售之聚合物，例如乙烯乙酸乙烯酯(EVA)、乙烯丙烯酸乙酯(EEA)、基於丙烯之塑性體或彈性體，諸如VERSIFYTM(陶氏化學公司)、接枝的基於烯烴之聚合物(MAH接枝)及其摻合物。視情況存在之連接層選自基於乙烯之烯烴嵌段共聚物PE-OBC(作為INFUSETM出售)或基於丙烯之烯烴嵌段共聚物PP-OBC(作為INTUNETM出售)。外層包含大於50wt%樹脂，其熔點Tm為25℃至30℃，或40℃或高於密封層中聚合物之熔點，其中外層聚合物選自樹脂，諸如AFFINITYTM、LLDPE(DOWLEXTM)、VERSIFYTM或VISTAMAX、ELITETM、MDPE、HDPE；或基於丙烯之聚合物，諸如丙烯均聚物、丙烯抗衝擊共聚物或TPO。
在一實施例中，撓性多層膜為共擠壓的。
在一實施例中，撓性多層膜包含密封層，其選自LLDPE(以商標名DOWLEXTM(陶氏化學公司)出售)、單點LLDPE(實質上線性或線性烯烴聚合物，包含以商標名AFFINITYTM或ELITETM(陶氏化學公司)出售之聚合物，例如基於丙烯之塑性體或彈性體，諸如VERSIFYTM(陶氏化學公司)、接枝的基於烯烴之聚合物(MAH接枝)及其摻合物。撓性多層膜亦包含聚醯胺之外層。
在一實施例中，撓性多層膜為共擠膜或層壓膜，密封層由基於乙烯之聚合物，諸如乙烯及α-烯烴單體(諸如1-丁烯、1-己烯或1-辛烯)之線性或實質上線性聚合物或單點催化之線性或實質上線性聚合物構成，所述聚合物之Tm為55℃至115℃且密度為0.865至0.925g/cm3，或0.875至0.910g/cm3，或0.888至0.900g/cm3。外層由選自LLDPE、OPET、OPP(取向聚丙烯)、BOPP、聚醯胺及其組合之材料構成。
在一實施例中，撓性多層膜為具有至少五個層之共擠膜或層壓膜，所述共擠膜具有以下層：由基於乙烯之聚合物，諸如乙烯及α-烯烴共聚單體(諸如1-丁烯、1-己烯或1-辛烯)之線性或實質上線性聚合物或單點催化之線性或實質上線性聚合物構成的密封層，所述基於乙烯之聚合物之Tm為55℃至115℃且密度為0.865至0.925g/cm3，或0.875至0.910g/cm3，或0.888至0.900g/cm3；及由選自LLDPE、OPET、OPP(取向聚丙烯)、BOPP、聚醯胺及其組合之材料構成的最外層。
在一實施例中，撓性多層膜為具有至少七個層之 共擠膜或層壓膜。密封層由基於乙烯之聚合物，諸如乙烯及α-烯烴共聚單體(諸如1-丁烯、1-己烯或1-辛烯)之線性或實質上線性聚合物或單點催化之線性或實質上線性聚合物構成，所述基於乙烯之聚合物之Tm為55℃至115℃且密度為0.865至0.925g/cm3，或0.875至0.910g/cm3，或0.888至0.900g/cm3。外層由選自LLDPE、OPET、OPP(取向聚丙烯)、BOPP、聚醯胺及其組合之材料構成。
在一實施例中，撓性多層膜為共擠(或層壓)五層膜或共擠(或層壓)七層膜，其具有至少兩個含有基於乙烯之聚合物之層。基於乙烯之聚合物在各層中可相同或不同。
在一實施例中，撓性多層膜為共擠(或層壓)五層或共擠(或層壓)七層膜，其具有至少一個含有選自LLDPE、OPET、OPP(取向聚丙烯)、BOPP及聚醯胺之材料之層。
在一實施例中，撓性多層膜為共擠(或層壓)五層或共擠(或層壓)七層膜，其具有至少一個含有OPET或OPP之層。
在一實施例中，撓性多層膜為共擠(或層壓)五層或共擠(或層壓)七層膜，其具有至少一個含有聚醯胺之層。
在一實施例中，撓性多層膜為七層共擠(或層壓)膜，其具有由基於乙烯之聚合物或乙烯及α-烯烴單體(諸如1-丁烯、1-己烯或1-辛烯)之線性或實質上線性聚合物或單點催化之線性或實質上線性聚合物構成之密封層，所述聚合物之Tm為90℃至106℃。外層為具有170℃至270℃之Tm之 聚醯胺。膜之△Tm為40℃至200℃。膜具有由不同於密封層中基於乙烯之聚合物之第二基於乙烯之聚合物構成之內層(第一內層)。膜具有由與外層中之聚醯胺相同或不同之聚醯胺構成之內層(第二內層)。七層膜具有100微米至250微米之厚度。
C.扁平密封
本發明方法包含用相對經加熱之扁平密封條扁平密封基底。圖2顯示位於多層膜16與多層膜18之間的基底12。術語「扁平密封」為用相對扁平熱密封條壓縮基底12以使得基底壁15之相對內部部分彼此接觸或以其他方式觸碰之行為。基底12位於或以其他方式「包夾」在多層膜16與多層膜18之間。使膜-基底-膜夾層移動至第一密封工位且放置在扁平密封條20與扁平密封條22之間。扁平密封條20與扁平密封條22相對且扁平密封條20、22包含適合的結構及機制以使密封條朝向且遠離彼此移動以便進行熱密封程序。加熱扁平密封條20及22，且所述方法包含扁平密封基底12，其中所述基底包夾在多層膜16與多層膜18之間。扁平密封在基底12之扁平化末端23、25處形成相對密封接頭24、26，如圖3中所示。
扁平密封步驟包含將各多層膜16、18鄰接或以其他方式焊接至基底12之各別上部13a及底部13b，如圖3及4中所示。
在一實施例中，所述方法包含：(i)針對基底選擇具有115℃至125℃之熔融溫度Tm1之乙烯/α-烯烴多嵌段共聚物； (ii)針對密封層選擇具有熔融溫度Tm2之基於烯烴之聚合物，使得Tm2比Tm1低10℃至40℃。
在一實施例中，Tm2比Tm1低10℃，或15℃，或20℃至25℃，或30℃，或35℃，或40℃。
在一實施例中，各密封層由基於乙烯之聚合物形成，所述聚合物具有比基底12中乙烯/α-烯烴多嵌段共聚物之Tm1低10℃至40℃的Tm2。將扁平密封條20、22加熱至高於或等於密封層基於乙烯之聚合物之熔融溫度(Tm2)且低於或等於基底12之熔融溫度Tm1(或達到至少乙烯/α-烯烴多嵌段共聚物之軟化溫度)之溫度。相對扁平條扁平密封條20、22所賦予之壓縮力及熱量同時(i)平化基底12或以其他方式使其變形；(ii)抵著基底12之外表面壓縮各多層膜16、18之密封層；(iii)在扁平化基底12之相對末端上形成密封接頭24及密封接頭26；(iv)熔融密封層中基於乙烯之聚合物；(v)軟化及/或熔融基底12中所存在之至少一些乙烯/α-烯烴多嵌段共聚物；(vi)形成可流動填縫劑28，其由(a)來自基底之乙烯/α-烯烴多嵌段共聚物、(b)來自密封層之基於乙烯之聚合物或(c)(a)與(b)之組合構成；及(vii)將上部/底部13a、13b焊接至膜16、18之各別密封層。
在一實施例中，扁平化步驟需要以下密封條件中之一者、一些或全部：(i)160℃，或170℃至180℃，或190℃，或200℃之溫度；(ii)700牛頓(N)，或750N至800N，或850N，或900N之壓力(或密封力)； (iii)施加(i)及/或(ii)持續0.1秒，或0.5秒，或0.75秒，或1.0第二，或2.0秒，或3.0秒，或4.0秒，或5.0秒至6.0秒，或7.0秒，或0.75秒，或8.0秒，或9.0秒或10秒之持續時間(密封時間或停留時間)。
壓縮力使基底12完全自身收縮，以使得基底之相對扁平化側面彼此接觸，封閉基底12，且使基底12產生線性組態B，如圖3中所示。
在一實施例中，壓縮力及封閉式扁平密封條20、22之加熱迫使可流動填縫劑28自基底12之外表面移動或以其他方式流動且進入密封接頭24且進入密封接頭26。填縫劑28流入且填充(完全或部分)密封接頭24及密封接頭26，如圖3及4中所示。
所述方法包含打開封閉式扁平密封條20、22，從而自基底12移除壓縮力且移除熱量。當打開封閉式扁平密封條20、22時，基底12中由乙烯/α-烯烴多嵌段共聚物提供之彈性使得基底12能夠自線性經壓縮組態B回彈或以其他方式彈回且返回至打開位置，如圖4中所示。基底12之回彈運動用圖4中之箭頭G顯示。在回彈之情況下，基底壁15之相對內部部分遠離彼此移動且彼此不再接觸。基底12之內部不與自身密封。在回彈之情況下，在扁平密封步驟之後，基底12恢復且開至橢圓形橫截面形狀，如圖4-6中所示。
在一實施例中，扁平化後基底12可具有圓形或橢圓形橫截面C，如圖4中所示。申請人發現，由乙烯/α-烯烴多嵌段共聚物構成且具有0.3mm至2.0mm之壁15厚度之基底12使得基底12能夠在完全收縮期間耐受壓縮力，而無 諸如龜裂、破裂或斷裂之損壞，又有利地具有足夠的彈性以在打開扁平密封條20、22後彈回打開組態。
打開封閉式扁平密封條形成如圖4中所示之焊接構造30，其中在上部13a處多層膜16焊接至基底12，在底部13b處多層膜18焊接至基底12，且多層膜彼此焊接，其中密封層直接彼此接觸。
D.點密封
所述方法包含用相對彎曲密封條點密封相對密封接頭。在扁平密封步驟之後，將焊接構造30移至第二密封工位。在第二密封工位下，相對彎曲密封條32、34接近焊接構造30。構造各彎曲密封條32、34以使得封閉式彎曲密封條32、34之直徑D大於基底12之直徑E，如圖5中所示。在第二密封工位下，填縫劑28為可流動的或以其他方式有延展性的。在封閉後，相對彎曲密封條32、34在密封接頭24及密封接頭26處施加壓縮力。因此，如本文所使用，「點密封」為在與基底上部13a或基底底部13b不接觸或輕微接觸之情況下，在密封接頭24處及密封接頭26處用相對彎曲密封條施加壓縮力之行為。以此方式，點密封在密封接頭24處將密封層16、18及填縫劑28捏合在一起，封閉密封接頭24。類似地，點密封在密封接頭26處將密封層16、18及填縫劑28捏合在一起，封閉密封接頭26。點密封填充或以其他方式封閉密封接頭24、26處之任何其餘空隙。在捏合期間，封閉式彎曲密封條32、34在基底上部13a或基底底部13b上不施加或實質上不施加熱量或壓縮力。
點密封步驟施加壓縮及捏合力持續足夠的持續 時間以使得填縫劑28能夠凝結且凝固，從而在密封接頭24、26處將多層膜16、18與基底12緊緊黏合。凝固之填縫劑28形成就地小翼36、38(圖6)，其完全填充各別密封接頭24、26且在基底12與多層膜16、18之間形成氣密密封。如本文所使用，「就地小翼」為基底12之延伸部分之結構，就地小翼為由乙烯/α-烯烴多嵌段共聚物(來自基底)構成之可流動填縫劑(填縫劑28)之聚合凝固，填縫劑在基底在加熱下扁平化時產生，填縫劑在隨後捏合且封閉膜與基底之間的密封接頭時凝固。就地小翼由(i)乙烯/α-烯烴多嵌段共聚物(來自基底12)或(ii)乙烯/α-烯烴多嵌段共聚物與基於烯烴之聚合物(來自密封層)之摻合物構成，或以其他方式由其形成。以此方式，在點密封方法期間，點密封步驟就地形成小翼。
在一實施例中，點密封步驟(利用相對彎曲密封條32、34)包含以下密封條件中之一者、一些或全部：(i)18℃，或20℃，或22℃至25℃，或30℃之溫度；(ii)700N，或750N至800N，或850N，或900N之壓力(或密封力)；(iii)施加(i)及/或(ii)持續0.1秒，或0.5秒，或1.0秒，或2.0秒，或3.0秒，或4.0秒，或5.0秒至6.0秒，或7.0秒，或8.0秒，或9.0秒或10秒之持續時間(密封時間或停留時間)。
在一實施例中，所述方法包含形成具有0.5mm或1.0mm或2.0mm或3.0mm或4.0mm或5.0mm之長度F 之小翼36及/小翼38。
在一實施例中，使焊接構造冷卻。點密封在高溫下進行且填充密封接頭或焊接構造之其他部分處之任何其餘空隙。
E.撓性容器
所述方法包含形成撓性容器。相對多層膜16、18彼此重疊且形成共用外圍邊緣40，如圖7中所示。所述方法包含沿著共用外圍邊緣密封多層膜16、18及形成撓性容器42。形成沿著共用外圍邊緣40之密封可在扁平化步驟之前、期間或之後進行。形成沿著共用外圍邊緣之密封可在點密封步驟之前、期間或之後進行。所述方法在基底12與多層膜16及18之間形成氣密密封44。
將配件扁平條密封至膜以製得容器之熱量及應力受到限制。由低彈性聚烯烴(例如LDPE、HDPE)構成之配件壓碎、破裂、斷裂且為不可用的。由聚烯烴彈性體(例如ENGAGE或VERSIFY彈性體)構成之配件可展現變形，但不會充分恢復或焊接封閉。由交聯彈性體(例如TPV)構成之配件可充分恢復，但不會充分密封且不會形成氣密密封。申請人出人意料地發現，由本發明乙烯/α-烯烴多嵌段共聚物構成之配件恢復(回彈)，將不會與自身密封且將使用扁平條密封來將配件密封至容器之膜。
藉助於實例且非限制，提供本發明之實例。
實例
本發明實例中使用具有以下表1中所示結構之撓性多層膜。
1.多層膜
2.配件
提供六個配件，配件1-6。各配件1-6之尺寸相同，配件之間僅材料不同。各配件1-6具有厚度為0.8mm且底部直徑為12mm之基底壁。
配件1-6之材料及組成顯示於表3中。
3.處理條件
將各配件(配件1-6)放置在膜1(來自表1)之兩個相對膜之間，其中密封層面對彼此。
用以下條件對各配件-膜組態進行兩步密封方法(扁平密封隨後捏合密封)。
使用膜1之相對膜之不同配件(配件1-6)之測試結果描述於以下表3中。
特別期望的是，本發明不限於本文中所含有之實施例及說明，而是包含彼等實施例之修改形式，所述修改形式包含在以下申請專利範圍之範疇內出現的實施例之部分及不同實施例之要素之組合。
12‧‧‧基底
13a‧‧‧基底上部
13b‧‧‧基底底部
16‧‧‧多層膜
18‧‧‧多層膜
20‧‧‧扁平密封條
22‧‧‧扁平密封條
23‧‧‧扁平化末端
24‧‧‧密封接頭
25‧‧‧扁平化末端
26‧‧‧密封接頭
28‧‧‧填縫劑
B‧‧‧線性組態

Claims (10)

  1. 一種方法，包括：A.提供具有一基底之一配件，所述基底包括一乙烯/α-烯烴多嵌段共聚物；B.將所述基底放置在兩個相對多層膜之間，各多層膜具有一各別密封層，所述密封層包括一基於烯烴之聚合物；C.用相對經加熱之扁平密封條將所述基底扁平密封至各多層膜，所述扁平密封在扁平化基底末端處形成相對密封接頭；及D.用相對彎曲密封條點密封所述相對密封接頭。
  2. 如申請專利範圍第1項所述的方法，包括使所述基底回彈以形成一橢圓形橫截面形狀。
  3. 如申請專利範圍第1項至第2項中任一項所述的方法，包括：針對所述基底選擇一具有115℃至125℃之一熔融溫度Tm1之乙烯/α-烯烴多嵌段共聚物；針對所述多層膜之所述密封層選擇一具有一熔點Tm2之基於烯烴之聚合物，其中Tm2比Tm1低10℃至40℃。
  4. 如申請專利範圍第1項至第3項中任一項所述的方法，包括用相對扁平密封條將所述基底加熱至一達到至少所述乙烯/α-烯烴多嵌段共聚物之軟化點之溫度；及在扁平化之情況下形成一填縫劑，所述填縫劑包括一選自由來自所述密封層之熔融聚烯烴、來自所述基底之熔融乙烯/α-烯烴多嵌段共聚物及其組合組成之群的材料。
  5. 如申請專利範圍第4項所述的方法，包括在所述扁平密封 之情況下用所述填縫劑填充所述相對密封接頭。
  6. 如申請專利範圍第4項所述的方法，包括在各相對密封接頭處之所述多層膜與所述配件之間用所述填縫劑形成一密封。
  7. 如申請專利範圍第5項或第6項中任一項所述的方法，包括在所述點密封之情況下使所述相對密封接頭中之所述填縫劑凝固以形成由凝固之填縫劑構成之就地小翼。
  8. 如申請專利範圍第7項所述的方法，包括：在所述各相對密封接頭處之所述膜與所述配件之間用所述就地小翼形成一密封。
  9. 如申請專利範圍第1項至第8項中任一項所述的方法，包括在所述基底與所述多層膜之間形成一氣密密封。
  10. 如申請專利範圍第1項至第9項中任一項所述的方法，其中所述相對多層膜彼此重疊且形成一共用外圍邊緣；沿著所述共用外圍邊緣密封所述多層膜；且形成一撓性容器。
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