NL2011080C2 - Method for manufacturing a plastic packing. - Google Patents

Method for manufacturing a plastic packing. Download PDF

Info

Publication number
NL2011080C2
NL2011080C2 NL2011080A NL2011080A NL2011080C2 NL 2011080 C2 NL2011080 C2 NL 2011080C2 NL 2011080 A NL2011080 A NL 2011080A NL 2011080 A NL2011080 A NL 2011080A NL 2011080 C2 NL2011080 C2 NL 2011080C2
Authority
NL
Netherlands
Prior art keywords
box
sheet
lid
plastic
edge
Prior art date
Application number
NL2011080A
Other languages
Dutch (nl)
Inventor
Simon Jacob Kat
Original Assignee
Hordijk Verpakkingsindustrie Zaandam B V
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 Hordijk Verpakkingsindustrie Zaandam B V filed Critical Hordijk Verpakkingsindustrie Zaandam B V
Priority to NL2011080A priority Critical patent/NL2011080C2/en
Application granted granted Critical
Publication of NL2011080C2 publication Critical patent/NL2011080C2/en

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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/32—Moulds having cutting means
    • B29C51/325—Moulds having cutting means combined with means for forming a rim
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/265—Auxiliary operations during the thermoforming operation
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/32—Moulds having cutting means
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0009—Cutting out
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0045—Perforating
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/44—Removing or ejecting moulded articles
    • B29C51/445—Removing or ejecting moulded articles from a support after moulding, e.g. by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/003—PET, i.e. poylethylene terephthalate
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7162—Boxes, cartons, cases
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/727—Fastening elements
    • B29L2031/7282—Snap fasteners, clips, press-buttons

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Description

Method for manufacturing a plastic packing
The invention relates to a method for manufacturing a plastic packing particularly although not exclusively intended for foodstuff, which packing at least comprises a box having a first edge, which box is connectable to a lid having a second edge wherein the first edge and the second edge can cooperate to form a releasable snap connection so as to keep the lid on the box .
Such a manufacturing method is known from the Dutch patent 1038469. The known method of manufacturing such a plastic packing applies injection molding. According to this method the box and the lid are manufactured simultaneously, and in the process certain steps are performed to perforate the connection between the box and the lid to make them easily separable. The edges of the box and the lid can then be used to form a snap connection for releasably connecting the lid to the box. There are several disadvantages with this known method, one of which being that injection molding only allows for manufacturing of plastic packing from material that is less transparent and that is less optimal in forming a gas barrier. Consequently the plastic packing manufactured with the known method suffers from the notable disadvantage that it is less suitable for packing perishable foodstuff.
It is an object of the invention to propose an alternative method and plastic packing manufactured by said method which is well-equipped for packing perishable foodstuff.
According to the invention the method for manufacturing such a plastic packing which is tailored for packing perishable foodstuff has the features of one or more of the appended claims.
According to a first aspect of the invention the box and the lid are made simultaneously by thermoshaping a sheet of plastic material. Apart from the fact that this method of production is very well-equipped for realizing a high throughput, the method is also very suitable to process transparent plastic such as APET. This material further has the benefit of having excellent barrier properties for gas such as oxygen, making it an excellent packing material for perishable food- stuff .
Beneficially the sheet of plastic material is provided by unwinding a reel of said plastic material, whereafter the sheet is heated and formed into shape with a mold.
With a view to prepare in one process step both the box and the lid for the box, it is preferable that on the inside of the mold's outer circumference a perforating cut is made in the sheet of plastic material that delimits on the one hand the first edge of the eventual box, and on the other hand delimits the second edge of the lid. A further process step is that after thermoshaping the sheet of plastic material an outside through-cut is made separating the box and the lid from the sheet of material. After separating the box and the lid from the sheet of material, same is stacked for further processing.
The invention will hereinafter be further elucidated with reference to the drawing of a single figure representing the sequential process steps of the method of the invention.
The method of manufacturing a plastic packing according to the invention aims at making the box and the lid for the box simultaneously by thermoshaping a sheet 1 of plastic material.
The sheet 1 of plastic material is provided by unwinding a reel 2 of said plastic material, whereafter the sheet 1 is heated with heating means 3 and formed into shape with a mold 4. Within the boundaries 5 of the mold's 4 outer circumference a perforating cut is made in the sheet 1 of plastic material at position 6 that delimits on the one hand an edge of the eventual box 8, and on the other hand delimits an edge of the lid 7. This provides a semi-attachment between the box 8 and the lid 7. The function and aim of this process step will be explained hereinafter.
After thermoshaping the sheet 1 of plastic material a through-cut 9 is made separating the box 8 and its semi attached lid 7 from the sheet 1 of material. After separating the box 8 and the semi attached lid 7 from the sheet 1 of material, same is stacked for further processing, in particular by taking the boxes 8 and the semi attached lids 7 to a filling line where the boxes are filled with the perishable food stuff to be packed. Such a filling line is known to the skilled person and requires therefore no further elucidation.
The filling line is completed in known manner by a station at which a plastic film is applied to the filled box 8 and its semi attached lid 7. The plastic film is made to attach only to the lid 7. Preferably the plastic material of the sheet 1 from which the boxes and lids are made, but also the material of the plastic film is APET, which is both transparent and forms an excellent gas barrier.
One of the aspects of the method according to the invention is that the neighboring edges of the box 8 and the lid 7 can form a releasable snap connection. When a user opens the box 8 to make use of its packed foodstuff, the user must separate the lid 7 completely from the box 8 by disconnecting the connections of the box and lid between the perforated cut. Due to this separating action the plastic film that closes off the box 8 and which connects to the edge of the lid 7, is detached from the box 8. The box may be re-closed again by placing the lid with the film attaching thereto back on the box. The neighboring edges of the box and lid then function as a releasable snap connection to make repeated opening and closing of the box possible.

Claims (6)

1. Werkwijze voor het vervaardigen van een kunststof verpakking, in het bijzonder maar niet uitsluitend geschikt voor voedingsmiddelen, welke verpakking tenminste een doos (8) met een eerste rand omvat, welke doos (8) verbindbaar is met een deksel (7) met een tweede rand, waarbij de eerste rand en de tweede rand met elkaar kunnen samenwerken voor het vormen van een losneembare klikverbinding voor het op de doos houden van de deksel, met het kenmerk, dat de doos (8) en het deksel (7) gelijktijdig gevormd zijn door het thermovormen van een vel (1) kunststof.Method for manufacturing a plastic package, in particular but not exclusively suitable for foodstuffs, which package comprises at least one box (8) with a first edge, which box (8) can be connected to a lid (7) with a second edge, wherein the first edge and the second edge can cooperate with each other to form a releasable snap connection for holding the lid on the box, characterized in that the box (8) and the lid (7) are formed simultaneously are by thermoforming a sheet (1) of plastic. 2. Werkwijze volgens conclusie 1, met het kenmerk, dat het vel (1) kunststof voorzien is door het afwikkelen van een rol (2) van genoemd kunststof materiaal, waarna het vel (1) verwarmd wordt en met een vorm (4) in de gewenste vorm wordt gebracht.Method according to claim 1, characterized in that the sheet (1) is provided with plastic by unwinding a roll (2) of said plastic material, whereafter the sheet (1) is heated and with a mold (4) in is brought into the desired shape. 3. Werkwijze volgens conclusie 2, met het kenmerk, dat binnen de grenzen van de buitenomtrek van de vorm (4) een perforatiesnede gemaakt wordt in het vel (1) kunststof die enerzijds de eerste rand van de uiteindelijke doos (8) begrensd en anderzijds de tweede rand van het deksel (7) begrensd .Method according to claim 2, characterized in that within the boundaries of the outer circumference of the mold (4) a perforation cut is made in the sheet (1) of plastic which on the one hand limits the first edge of the final box (8) and on the other hand the second edge of the lid (7) is limited. 4. Werkwijze volgens één der voorgaande conclusies, met het kenmerk, dat na het thermovormen van het vel (1) kunststof een doorsnede door het vel (1) wordt gemaakt die de doos (8) en het deksel (7) van het vel (1) materiaal scheidt.A method according to any one of the preceding claims, characterized in that after thermoforming the sheet (1) plastic, a section is made through the sheet (1) that the box (8) and the lid (7) of the sheet ( 1) material separates. 5. Werkwijze volgens conclusie 4, met het kenmerk, dat na het scheiden van de doos (8) en het deksel (7) van het vel (1) materiaal, deze voor verdere bewerking wordt opgestapeld.Method according to claim 4, characterized in that after separating the box (8) and the cover (7) from the sheet (1) of material, it is stacked for further processing. 6. Werkwijze volgens één der voorgaande conclusies, met het kenmerk, dat het kunststof materiaal APET is.Method according to one of the preceding claims, characterized in that the plastic material is APET.
NL2011080A 2013-07-02 2013-07-02 Method for manufacturing a plastic packing. NL2011080C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2011080A NL2011080C2 (en) 2013-07-02 2013-07-02 Method for manufacturing a plastic packing.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2011080 2013-07-02
NL2011080A NL2011080C2 (en) 2013-07-02 2013-07-02 Method for manufacturing a plastic packing.

Publications (1)

Publication Number Publication Date
NL2011080C2 true NL2011080C2 (en) 2015-01-05

Family

ID=49170828

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2011080A NL2011080C2 (en) 2013-07-02 2013-07-02 Method for manufacturing a plastic packing.

Country Status (1)

Country Link
NL (1) NL2011080C2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555290A (en) * 1984-04-19 1985-11-26 Blair Industries, Inc. Method of making cassette holders
US5318811A (en) * 1992-12-30 1994-06-07 Welex Incorporated Food tray and method of making the same
WO1995021056A1 (en) * 1994-02-07 1995-08-10 E. Khashoggi Industries Hinges for highly inorganically filled composite materials
US20050035118A1 (en) * 2003-08-15 2005-02-17 Anchor Packaging Single point hinge
US20120048874A1 (en) * 2010-08-30 2012-03-01 Dixie Consumer Products Llc Sealable snack container
WO2012069050A1 (en) * 2010-11-25 2012-05-31 Faerch Plast A/S Sealed container for foodstuffs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555290A (en) * 1984-04-19 1985-11-26 Blair Industries, Inc. Method of making cassette holders
US5318811A (en) * 1992-12-30 1994-06-07 Welex Incorporated Food tray and method of making the same
WO1995021056A1 (en) * 1994-02-07 1995-08-10 E. Khashoggi Industries Hinges for highly inorganically filled composite materials
US20050035118A1 (en) * 2003-08-15 2005-02-17 Anchor Packaging Single point hinge
US20120048874A1 (en) * 2010-08-30 2012-03-01 Dixie Consumer Products Llc Sealable snack container
WO2012069050A1 (en) * 2010-11-25 2012-05-31 Faerch Plast A/S Sealed container for foodstuffs

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