JPH0367869B2 - - Google Patents

Info

Publication number
JPH0367869B2
JPH0367869B2 JP57193930A JP19393082A JPH0367869B2 JP H0367869 B2 JPH0367869 B2 JP H0367869B2 JP 57193930 A JP57193930 A JP 57193930A JP 19393082 A JP19393082 A JP 19393082A JP H0367869 B2 JPH0367869 B2 JP H0367869B2
Authority
JP
Japan
Prior art keywords
packaging
thickness
region
edge
web
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.)
Expired - Lifetime
Application number
JP57193930A
Other languages
English (en)
Other versions
JPS58101055A (ja
Inventor
Guranzu Yanneritsuku
Gunnaa Niruson Suben
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.)
Tetra Pak AB
Original Assignee
Tetra Pak International AB
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 Tetra Pak International AB filed Critical Tetra Pak International AB
Publication of JPS58101055A publication Critical patent/JPS58101055A/ja
Publication of JPH0367869B2 publication Critical patent/JPH0367869B2/ja
Granted legal-status Critical Current

Links

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
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02241—Cutting, e.g. by using waterjets, or sawing
    • 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
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • 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
    • B29C66/45—Joining of substantially the whole surface of the 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
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/142—Laminating of sheets, panels or inserts, e.g. stiffeners, by wrapping in at least one outer layer, or inserting into a preformed pocket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • 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
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0222—Mechanical pre-treatments, e.g. reshaping without removal of material, e.g. cleaning by air blowing or using brushes
    • 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
    • B29C66/7232—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 comprising a non-plastics layer
    • B29C66/72327—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 comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/7234—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 comprising a barrier layer
    • B29C66/72343—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 comprising a barrier layer for liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge
    • Y10T428/24215—Acute or reverse fold of exterior component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge
    • Y10T428/24215—Acute or reverse fold of exterior component
    • Y10T428/24231—At opposed marginal edges
    • Y10T428/2424—Annular cover
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge
    • Y10T428/24215—Acute or reverse fold of exterior component
    • Y10T428/24231—At opposed marginal edges
    • Y10T428/2424—Annular cover
    • Y10T428/24248—One piece
    • Y10T428/24256—Abutted or lapped seam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • Y10T428/24537—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • Y10T428/24554—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface including cellulosic or natural rubber component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Making Paper Articles (AREA)

Description

【発明の詳細な説明】 本発明は包装容器の製造方法に関する。
例えば、ミルクと、その他の液体酪産品とを包
装する使い捨て式包装容器は、積層される包装材
料から製造され、該材料は、比較的硬い材料、例
えば、紙のキヤリヤ層を有し、該層は、少くとも
内容物に接触する如く意図される側部において液
密が好ましくは熱可塑性の材料、例えば、ポリエ
チレンによつて被われる。該熱可塑性層は、不透
過性を与える材料として役立つ外に、積層材の熱
シールを可能にするのにも使用される。この理由
により、キヤリヤ層の反対側、即ち、外側が熱可
塑性材料で同様に被われていれば、屡々有利であ
る。包装積層材が包装容器に変えられるとき、こ
れ等の容器は、積層材の折曲げと、シールとによ
り、所望の形状の包装容器が得られる如く成形さ
れる。仕上げられる包装容器に不可避に現われね
ばならないシールが液体に対して完全に不透過性
でなければならないことは、最も重要なものであ
る。これは、内側対外側のシール型式が使用され
れば、包装積層材の下側端縁、即ち、包装容器の
内部に向く端縁が、熱可塑性材料被覆面だけでは
なく、キヤリヤ層の露出される切断端縁自体でも
内容物に接触する様になるため、達成するのが特
に困難である。繊維質の型式のキヤリヤ層の場合
には、該層は、次第に内容物を吸収し、これは、
包装の液密性と、耐久性とに有害な影響を及ぼ
す。現在までこれを防止するには、別個の液密ス
トリツプが密封部の内側の露出された切断端縁の
上に設置されるか、または内側熱可塑性層が材料
の内側端縁のまわりに延びて内容物と、キヤリヤ
層との間の接触を阻止する如く材料の内側端縁領
域が、折重ねられるかのいづれかであつた。後者
の方法は、この場合に別個のストリツプが必要で
ないため、一般に好ましい。しかしながら、包装
積層材は、折曲げられる端縁を特定に薄くするこ
とでこの方法に対して準備されねばならないが、
そうでなければ、多重材料の厚さがシール領域を
厚くして扱いにくくするためである。
現在まで、包装積層ウエブの折曲げられる端縁
を薄くすることは、積層ウエブの製造の最終段階
の際に行われた。キヤリヤ層が熱可塑性の恐らく
仕上げられる積層材を構成する如く意図される他
の材料の異なる層を備えて、適当な巾に切断され
た後、問題の端縁を薄くすることは、キヤリヤ層
の一部を外側の熱可塑性層と共に長手方向端縁領
域に沿い研削または切除する砥石車または円筒形
カツタにウエブを通すことで実施される。該切除
が、材料ウエブの端縁領域でのみ行われるため、
充分な精度でこの操作を実施することは、困難で
あるが、端縁領域が切削工具の作用の下で横方向
へ逃げないし移動する傾向を有するためである。
その上、該操作は、材料ウエブの速度が端縁の不
安定さにより比較的遅く保たれねばならないた
め、長時間を要する。切断除去に関連して形成さ
れる任意の塵埃が材料ウエブに随伴して結局包装
内に沈澱するのを防止するため、材料ウエブの或
る形態の清掃は、該ウエブが仕上げられた包装容
器に変えられる以前に実施されねばならない。
本発明の目的は上述した従来の方法における欠
点を排除すると共に包装容器を簡単に且つ経済的
に製造することができる方法を提供することであ
る。
上記した目的を達成するために、本発明による
包装容器の製造方法は、原材料ウエブの長手方向
に規則的に離間した領域内で原材料ウエブの幅の
わたつて原材料の一部を削り取ることによつて前
記領域で厚さを低減したキヤリヤ層を形成するこ
とと、前記キヤリヤ層を液密材料層で覆つて包装
積層材を形成することと、該包装積層材を厚さの
低減された前記領域のそれぞれにおいて前記領域
の長手方向に延びる切断部で切断し、厚さを低減
された端縁領域を有する個々の包装積層ウエブを
形成することと、前記包装積層ウエブのそれぞれ
の前記端縁領域の一方を該包装積層ウエブの前記
端縁領域の他方に結合することとからなる。
次に、本発明方法の好適な実施例を図面を参照
して更に詳細に説明する。
第１図では、本発明により低減された厚さの長
手方向の領域を有する原材料ウエブの一部が、斜
視図で示される。この製造段階では、原材料ウエ
ブは、通常は例えば紙のような繊維材料を硬化し
た材料のキヤリヤ層１のみから成る。本発明の方
法によると、キヤリヤ層１の厚さは、原材料ウエ
ブの巾にわたり規則的に離れて位置する長手方向
領域２内で低減される。これは、幾かの回転する
円筒形カツタがその周辺の能動的な部分で原材料
ウエブの一側部から所望の厚さのストリツプを切
除する態様で通過する原材料ウエブに接触する如
く材料の製造の際に配置される該カツタの扶助で
適当に実施される。これを実施するのに好適な方
法は、好適な装置と共に、スエーデン国特許出願
第8000890−７号に幾分詳細に述べられているの
でこれを参照されたく、従つて、更に詳細な説明
は、省略されてもよい。
第２図では、第１図の原材料ウエブは、製造の
過程の後の段階における状態を断面図で示され
る。原材料ウエブのキヤリヤ層１の厚さの低減に
より領域２が作られた後、キヤリヤ層は、均質な
熱可塑性材料、好ましくはポリエチレンからなる
液密材料の薄い層３を有している。該熱可塑性材
料は、領域２が作られた後に原材料ウエブへ押出
され、キヤリヤ層１が、押出機のダイを通過後、
相互に接触する２つのローラの間を通過するのを
許容し、該ローラが、完全な積層を得られる如
く、まだ部分的に軟質の熱可塑性薄層３をキヤリ
ヤ層１の表面へ押圧することにより、キヤリヤ層
１へ積層される。熱可塑性層３と、キヤリヤ層１
との間で領域２においても真実の接触を保証する
如く、２つのローラ１がゴムまたは或るその他の
可撓性材料から成ることは、適当である。
該積層が完成し、キヤリヤ層が恐らく別の熱可
塑性層をその反対側の平面側にも設けられた後、
原材料ウエブは、厚さの低減された領域２での長
手方向の切断部５の扶助で個々の狭い包装積層ウ
エブ４に分割される。第２図に明瞭に示す如く、
切断部５は、該領域に非対称的に設けられ、特
に、各切断部５が厚さの低減された領域２を広い
端縁２′と、狭い端縁２′とに夫々分割する態様で
設けられる。実際上、切断部５は、２つの端縁領
域２′，２″が所定の相互の巾の比率を与えられる
如く位置決めされる。特に第２図に認められる如
く、各厚さ低減領域２は、中央に位置しほぼ平坦
な最小厚さ領域を有している。この領域は、領域
２の全巾の約半分を占める。該平坦な最小厚さ領
域の両側には、２つの緩い遷移領域があり、該各
領域は、低減された領域２の全巾の約1/4を占め
る。このとき、各厚さ低減領域２は、広い端縁領
域２′が緩い遷移領域のほかに最小厚さ領域の大
部分または全体を有し、一方、狭い端縁領域２″
が材料厚さの次第に低減する領域の１つを有する
のみの態様で切断部５の扶助によつて分割され
る。この結果、２つの厚さ低減端縁領域２′，
２″は、ほぼ３：１になりいづれにしても５：１
と３：２との間である相互の巾の比率を与えられ
る。
従つて、広い厚さ低減端縁領域２′は、積層厚
さが最小の領域の大部分または全部を有してい
る。この領域内では、キヤリヤ層１の厚さは、元
の厚さの半分と、1/3との間に低減され、従つて、
積層材は、形成される厚さが積層材の元の厚さを
越えることなく該領域で折重さねることが可能で
あり、これは、大きな利点である。
個々の包装積層ウエブ４の広い端縁領域２′の
折重さねは、第３図に示される。長手方向端縁が
折曲げ線に沿い180゜に折曲げられ、該折曲げ線の
位置が広い端縁領域２′内で材料厚さの最小の面
積の中心にほぼ一致する態様は、該図に認められ
る。従つて、材料ウエブ４の元の外側切断端縁６
は、端縁領域２′の最小厚さの中央領域と、全材
料厚さへの遷移領域との間の遷移部と同一のレベ
ルにある（しかしながら、積層材の反対側で）。
包装積層材の端縁領域は、包装容器の内部に後で
向く熱可塑性層が材料端縁のまわりに延びる態様
で180゜に折曲げられる。端縁領域の折曲げられた
部分は、積層材の外側を通常被う熱可塑性層（図
示せず）の扶助または接着剤で包装積層材の外側
へシールされてもよい。
第４図では、第３図の包装材料ウエブが管（部
分的にのみ示される）に成形され、その２つの端
縁が重ねシールに一体に結合される態様が示され
る。これでは、包装材料ウエブの折曲げられた端
縁領域２′は、端縁領域２″の内側（即ち、管の内
側または結局包装容器の内側）に位置し、従つ
て、包装容器の内部に存在する内容物に接触する
様になる包装積層材の全表面は、積層材の熱可塑
性材料層３で被われる。熱可塑性層３の２部分
は、広い端縁領域２′の折曲げられた部分が重な
る端縁領域２″に対して休止するシール領域内で
相互に対し液密の態様に密封される。該シールの
強度と、液密性とは、狭い端縁領域２″の内側熱
可塑性層が図示されない外側熱可塑性層を介して
反対側の積層端縁に休止して該端縁に結合される
ことで更に改善される。材料の端縁領域の１つの
折重ねが厚さ低減領域内で行われるため、完成さ
れるシールは、積層材の元の厚さを僅かに越える
だけの厚さを有している。
第３図及び第４図に示した本発明方法の工程
は、例えば第５図に示した従来よく知られた包装
機械によつて行われる。第５図の包装機械は、牛
乳の密封容器を製造するための機械である。前述
したように例えばポリエチレンのような液密熱シ
ール可能なプラスチツク材料で両側を被覆された
キヤリヤ層からなる可撓性包装積層ウエブ４は、
個々のウエブに切断後にロール巻にされて該機械
に支持される。包装積層ウエブ４は複数個の案内
ローラ７を通して巻出され、ローラ８からほぼ垂
直に下降する。下降するに従つて、包装積層ウエ
ブ４の広い端縁領域２′は折曲げ器９によつて折
曲げられ、更に包装積層ウエブ４は複数個の成形
ローラ１０によつて管に曲げられ、長手方向シー
ル装置１１によつて包装積層ウエブ４の両端の端
縁領域２′，２″をシール結合されて管を形成す
る。該管はその上方端において管中へ延びるパイ
プ１２から牛乳を常時供給され、レベル制御素子
によつて牛乳の表面が常に管中の一定のレベルに
維持されるようになつている。このレベルの下方
には横方向シール装置１３が配置されていて、所
定の長さ毎に管の側部をはさみ付けて熱を加え
る。その結果、管の両側部の内側にある熱シール
可能なプラスチツク層同士が結合され、液密の横
方向シールを形成する。このようにして、一連の
実質的にクツシヨン形状にされた包装容器が製造
され、該包装容器は横方向のシール部において切
断されて互いに分離され、個々の容器は最終の平
行六面体の形に成形される。
長手方向の領域で厚さを低減し、一方、材料が
依然として原材料ウエブの形状にあることによる
積層材の製造方法は、上述の如く、かなり早い速
度で材料を製造すると共に、精度を維持し、従つ
て、従来よりも大きい容量を有することを可能に
する。厚さの低減後の外側熱可塑性層の装着は、
任意の残留塵埃が熱可塑性層で被われ、従つて、
無害になるため、残留する紙の繊維および塵埃が
仕上げられた包装容器に収容される問題を更に排
除する。
厚さを低減される端縁領域の非対称構造は、端
縁領域の１つの折重ねに対する最適の便宜と、包
装容器の連続的な成形を阻害し得る過度な厚さを
必要としない液密重ねシールの形成とを提供す
る。
【図面の簡単な説明】
第１図は本発明の方法における包装積層材の製
造の際の原材料ウエブの部分的な斜視図、第２図
は製造の後の段階における第１図の原材料ウエブ
の断面図、第３図は本発明による折曲げられた端
縁を有する包装材料ウエブの断面図、第４図は本
発明方法における包装積層材で形成される重ねシ
ールの断面図、第５図は本発明の方法を実施可能
な従来の包装機械の具体例を示す図である。 １……キヤリヤ層、２……長手方向領域、２′
……広い端縁、２″……狭い端縁、３……熱可塑
性薄層、４……包装積層ウエブ、５……切断部。

Claims (1)

  1. 【特許請求の範囲】 １ 原材料ウエブの長手方向に規則的に離間した
    領域２内で原材料ウエブの幅にわたつて原材料の
    一部を削り取ることによつて前記領域で厚さを低
    減したキヤリヤ層１を形成することと、前記キヤ
    リヤ層を液密材料層３で覆つて包装積層材を形成
    することと、該包装積層材を厚さの低減された前
    記領域のそれぞれにおいて前記領域の長手方向に
    延びる切断部５で切断し、厚さを低減された端縁
    領域２′，２″を両側に有する個々の包装積層ウエ
    ブ４を形成することと、前記包装積層ウエブのそ
    れぞれの前記端縁領域の一方を該包装積層ウエブ
    の前記端縁領域の他方に結合することとからなる
    包装容器の製造方法。 ２ 前記端縁領域の一方２′が他方の端縁領域
    ２″の幅より大きい幅を有して形成されている特
    許請求の範囲第１項記載の包装容器の製造方法。 ３ 前記包装積層ウエブは前記大きい幅の端縁領
    域２′内の前記包装積層ウエブの厚さが全材料厚
    さから最小厚さまで次第に減少し、該最小厚さが
    前記ウエブの長手方向端縁に沿う領域内で広く維
    持されるように形成されている特許請求の範囲第
    ２項記載の包装容器の製造方法。 ４ 前記最小厚さの領域が前記端縁領域２′の幅
    の半分又はそれより大きい幅を有するように形成
    されている特許請求の範囲第３項記載の包装容器
    の製造方法。 ５ 前記大きい幅の端縁領域２′がその厚さの最
    小厚さの領域の中心にほぼ一致する位置の折曲げ
    線に沿い180゜折曲げられ、この折曲げられた端縁
    領域を該包装ウエブの小さい幅の端縁領域２″に
    結合した特許請求の範囲第１項から第４項までの
    いずれかの一項に記載の包装容器の製造方法。
JP57193930A 1981-11-05 1982-11-04 包装容器の製造方法 Granted JPS58101055A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8106547-6 1981-11-05
SE8106547A SE427443B (sv) 1981-11-05 1981-11-05 Sett att framstella banformigt forpackningslaminat

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Publication Number Publication Date
JPS58101055A JPS58101055A (ja) 1983-06-16
JPH0367869B2 true JPH0367869B2 (ja) 1991-10-24

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EP (1) EP0079017A3 (ja)
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AU (1) AU554298B2 (ja)
BR (1) BR8206424A (ja)
CA (1) CA1201024A (ja)
GB (1) GB2110989B (ja)
KE (1) KE3587A (ja)
MX (1) MX156628A (ja)
SE (1) SE427443B (ja)
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ZA (1) ZA828092B (ja)

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US3656513A (en) * 1966-10-31 1972-04-18 Continental Can Co Method of manufacturing container bodies from composite strip material; container body blanks and container bodies
US3540490A (en) * 1968-10-01 1970-11-17 American Can Co Container body and method of making the same
GB2057967B (en) * 1979-09-05 1983-04-07 Frelen Ltd Covered foamed materials
SE430231B (sv) * 1980-02-05 1983-10-31 Tetra Pak Int Anordning for reducering av en lopande materialbanas tjocklek

Also Published As

Publication number Publication date
JPS58101055A (ja) 1983-06-16
EP0079017A3 (en) 1986-02-12
ZA828092B (en) 1983-09-28
AU554298B2 (en) 1986-08-14
BR8206424A (pt) 1983-09-27
SG91985G (en) 1986-07-25
SE8106547L (sv) 1983-04-11
AU9020182A (en) 1983-05-12
EP0079017A2 (en) 1983-05-18
GB2110989B (en) 1985-10-09
CA1201024A (en) 1986-02-25
KE3587A (en) 1986-02-07
US4755412A (en) 1988-07-05
SE427443B (sv) 1983-04-11
MX156628A (es) 1988-09-20
GB2110989A (en) 1983-06-29

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