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CN108861076A - 具有内袋的容器 - Google Patents

具有内袋的容器 Download PDF

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Publication number
CN108861076A
CN108861076A CN201810415407.9A CN201810415407A CN108861076A CN 108861076 A CN108861076 A CN 108861076A CN 201810415407 A CN201810415407 A CN 201810415407A CN 108861076 A CN108861076 A CN 108861076A
Authority
CN
China
Prior art keywords
container
inner bag
outer container
layer
microbodies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810415407.9A
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English (en)
Other versions
CN108861076B (zh
Inventor
S·克内尔
R·克内尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plath Ltd By Share Ltd
Original Assignee
Plath Ltd By Share Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plath Ltd By Share Ltd filed Critical Plath Ltd By Share Ltd
Publication of CN108861076A publication Critical patent/CN108861076A/zh
Application granted granted Critical
Publication of CN108861076B publication Critical patent/CN108861076B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/771—Containers or packages with special means for dispensing contents for dispensing fluent contents by means of a flexible bag or a deformable membrane or diaphragm
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • 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
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • 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
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
    • B65D1/0215—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features multilayered
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/04—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers
    • B67D1/0462—Squeezing collapsible or flexible beverage containers, e.g. bag-in-box containers
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3032—Preforms or parisons made of several components having components being injected
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3086—Interaction between two or more components, e.g. type of or lack of bonding
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3086—Interaction between two or more components, e.g. type of or lack of bonding
    • B29C2949/3094—Interaction between two or more components, e.g. type of or lack of bonding preform having at least partially loose components, e.g. at least partially loose layers
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
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    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
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    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C49/4817—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity with means for closing off parison ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29K2023/06—PE, i.e. polyethylene
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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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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B29K2105/162—Nanoparticles
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    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
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    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/0801—Details of beverage containers, e.g. casks, kegs
    • B67D2001/0812—Bottles, cartridges or similar containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/0801—Details of beverage containers, e.g. casks, kegs
    • B67D2001/0827—Bags in box

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Packages (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Bag Frames (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

本发明涉及具有内袋的容器，该容器包括基本上刚性的外容器和容易变形的内袋，其中外容器和内袋由不同的热塑性塑料材料构成，外容器和内袋不会彼此进行熔接连接，容器具有容器开口和在外容器的壁中的用于当内袋收缩时平衡外容器与内袋之间的间隙中的压力的至少一个压力平衡开口，其中，微体一体化到指向外容器的内袋的层中和/或指向内袋的外容器的层中，微体的材料在制造容器期间不熔化，微体在层的表面产生凹凸。

Description

具有内袋的容器
技术领域
本发明涉及一种容器，其包括基本上刚性的外容器和容易变形的内袋，其中外容器和内袋由不同的热塑性塑料材料构成，外容器和内袋不会进行彼此熔接连接。容器包括供容器的内容物排出的容器开口和在外容器的壁中的用于当内袋收缩时平衡外容器与内袋之间的间隙中的压力的至少一个压力平衡开口。能够通过共挤出工艺制造容器，其中通过在吹塑模具的基底处成形过量的材料，使内袋被基底熔接缝密封，并且该基底熔接缝陷入(trap)外容器中的也被密封的基底熔接缝中。例如在欧洲专利EP0912420中公开了这种容器，还说明了如何能够在外容器的壁中形成压力平衡开口。
背景技术
然而，还能够通过注射成型工艺制造该容器，在注射模具中将用于内袋的材料注射到配置在注射模具中的外容器中。EP2801465公开了这种容器。
当通过共挤出工艺制造容器时，由至少两个管(一个管用于外容器，一个管用于内容器)构成的坯料被共挤出并配置在吹塑模具的打开的半模之间，其中当坯料具有用于制造容器所必须的长度时吹塑模具闭合。如上所述，在吹塑模具的底部处成形并挤出过量的材料，从而形成外容器和内袋中的封闭的基底熔接缝。
然后通过压力介质使坯料膨胀成与吹塑模具的壁接合，然后与吹塑模具分离。
外容器和内袋的不同的塑料材料不会彼此进行熔接接合，但是它们以相当大的粘合力彼此粘接。在容器装满其内容物之前(随后利用泵或分配器单元(挤出)通过压缩容器将该内容物逐渐排出)，内袋必须至少基本上与外容器的壁分离然后再次施加到外容器的壁。为此，通过容器开口向内袋施加减小的压力，或者通过压力平衡开口向内袋施加增大的压力，内袋随即收缩并以或多或少不受控的方式与外容器分离，从而能够发生内袋仅在基底接缝的一侧分离。然后通过容器开口将压力介质引入内袋中，以便再次将压力施加于外容器，使得内袋实现提供的填充容积。
如果内袋没有基本上与外容器的壁分离，尽管在外容器的壁或者基底中存在压力平衡开口，由于容器内容物的排出，也能够发生压力相对大幅地减小。该减小的压力越大，通过内袋的壁的渗透越多，并且泄露的风险越大。如果减小的压力太大还会损坏泵或分配单元的运行能力，使得不能排出所有容器内容物。
对于外容器和内袋的某些材料而言，粘合力太大以至于为了分离内袋需要大幅减小的压力。然而，内袋通常在基底接缝的两侧不同地与外容器分离，并且经常仅不完全地分离，使得可能发生并非所有容器内容物均可以随后被排出。高的减小的压力还能够导致内袋的永久变形，使得内袋不再能够平坦地施加于外容器，在最不利的情况下形成有褶皱。
发明内容
本发明的目的是提供一种所考虑的类型的容器，该容器避免了以上缺点。该目的通过如下方案实现。
一种容器，其由基本上刚性的外容器和容易变形的内袋构成，其中所述外容器和所述内袋由不同的热塑性塑料材料构成，所述外容器和所述内袋不会彼此进行熔接连接，所述容器具有容器开口和在所述外容器的壁中的用于当所述内袋收缩时平衡所述外容器与所述内袋之间的间隙中的压力的至少一个压力平衡开口，其特征在于，微体(microbody)一体化到指向所述外容器的所述内袋的层中和/或指向所述内袋的所述外容器的层中，所述微体的材料在制造所述容器期间不熔化，所述微体在所述层的表面产生凹凸。
具体实施方式
本发明提供包含在指向外容器的内袋的层中和/或指向内袋的外容器的层中的微体，微体的材料在制造容器期间不熔化，微体在层的表面产生了凹凸。由此使该层与相邻的外容器的内壁或内袋的外壁之间的粘合力显著地减小。还发现，内袋在挤压缝的两侧变得基本均匀且完全地与外容器分离，并且因为归因于基本较低地减小的压力内袋没有发生永久变形和折叠变形，所以内袋可以再次平滑地施加。
“微体”是指有关的非常小的物体，该物体小于内袋的相关联的外层的厚度或者外容器的外层或层的厚度。微体的尺寸优选地在微米范围内，但也能够在纳米范围内。重要的是，微体在层的表面产生凹凸。
优选的是，微体具有圆形(rounded)表面，虽然尖角和锋利的边缘能够产生较低的粘合力，但是微体不具有尖角和锋利的边缘。然而，微体优选地具有光滑的圆形表面，由此具有益于良好的加工性的大致球状。
许多物质适合作为微体的材料，该材料在容器的制造期间不熔化并且保持该材料的形状，由此使用玻璃球是非常合适的。
依据容器的内容物，内袋能够包括具有一体化的微体的上述一层。优选地将沙林料(Surlyn)或PE作为该层的材料。
在许多应用中，内袋包括至少两个另外的层，该至少两个另外的层优选地包括用于中间层和沙林料或PE的内层的EVOH沙林料。然而，本发明不限于这种层压结构。
外容器优选地包括PET或PP的层。然而，外容器能够包括两个或更多个层。
在共挤出工艺中，能够将微体混入挤出机中的相关联的层材料，或者将微体预先与材料混合并与材料一起引入挤出机。
外容器能够具有形成于周壁或者底壁的单个压力平衡开口。然而，还能够形成位于挤压缝的两侧的两个压力平衡开口。更多数量的压力平衡开口也在本发明的范围内。

Claims (9)

1.一种容器，其包括基本上刚性的外容器和容易变形的内袋，其中所述外容器和所述内袋由不同的热塑性塑料材料构成，所述外容器和所述内袋不会彼此进行熔接连接，所述容器具有容器开口和在所述外容器的壁中的用于当所述内袋收缩时平衡所述外容器与所述内袋之间的间隙中的压力的至少一个压力平衡开口，其特征在于，微体一体化到指向所述外容器的所述内袋的层中和/或指向所述内袋的所述外容器的层中，所述微体的材料在制造所述容器期间不熔化，所述微体在所述层的表面产生凹凸。
2.根据权利要求1所述的容器，其特征在于，所述微体具有圆形表面。
3.根据权利要求1或2所述的容器，其特征在于，所述微体为球状。
4.根据权利要求1至3中任一项所述的容器，其特征在于，所述微体为玻璃球。
5.根据权利要求1至4中任一项所述的容器，其特征在于，所述层由沙林料或PE构成。
6.根据权利要求1至5中任一项所述的容器，其特征在于，所述内袋包括两个另外的层，所述两个另外的层包括沙林料或PE和作为中间层的EVOH。
7.根据权利要求1至6中任一项所述的容器，其特征在于，所述外容器由PET或PP构成。
8.根据权利要求1至7中任一项所述的容器，其特征在于，所述容器通过共挤出工艺制造，当吹塑模具的底部处的过量材料被挤出时，所述内袋被基底熔接缝密封，并且该基底熔接缝陷入所述外容器中的也被密封的基底熔接缝中。
9.根据权利要求1至7中任一项所述的容器，其特征在于，所述容器通过注射成型工艺制造，在注射模具中将用于所述内袋的材料注射到配置在所述注射模具中的外容器中。
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