WO2017134680A2 - Récipient en pet à large embouchure moulé par soufflage et son processus de fabrication - Google Patents

Récipient en pet à large embouchure moulé par soufflage et son processus de fabrication Download PDF

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Publication number
WO2017134680A2
WO2017134680A2 PCT/IN2017/000025 IN2017000025W WO2017134680A2 WO 2017134680 A2 WO2017134680 A2 WO 2017134680A2 IN 2017000025 W IN2017000025 W IN 2017000025W WO 2017134680 A2 WO2017134680 A2 WO 2017134680A2
Authority
WO
WIPO (PCT)
Prior art keywords
container
blow
moulded
injection
moulding
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.)
Ceased
Application number
PCT/IN2017/000025
Other languages
English (en)
Other versions
WO2017134680A3 (fr
Inventor
Gandhi Ritesh
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.)
Jolly Containers
Original Assignee
Jolly Containers
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 Jolly Containers filed Critical Jolly Containers
Publication of WO2017134680A2 publication Critical patent/WO2017134680A2/fr
Publication of WO2017134680A3 publication Critical patent/WO2017134680A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • B65D1/10—Jars, e.g. for preserving foodstuffs

Definitions

  • the present invention generally relates to a blow moulded plastic containers and more particularly to a wide open mouth pet container having a snap fitted double lock and devoid of any undercut from the side wall of the container.
  • PET containers are mainstream these days owing the accepted form to numerous advantages. PET containers are lightweight, easily usable, and economical to the manufacturer and consumer likewise; apart from being environment-friendly as opposed to the fondwhile containers.
  • the existing PET containers in the prior art come in various shapes and with numerous undercuts to attain the desired shapes thereby undermining the capacity, volume and more specifically the width of the mouth of container.
  • Narrow mouth of the existing containers requires specific positioning and great attention while filling the containers with content thereby causing spillage.
  • the cycle time in filling and packaging plants and industries are increased, affecting the economics in the long run.
  • Blow moulded wide mouth container and process of manufacture of the wide mouth container addresses the need for a container that accommodates highly viscous content without any spillage thereby accelerating the cycle time of filling and leveraging a high speed automatic filling line.
  • the present disclosure describes a blow moulded wide mouth container.
  • the blow moulded container comprises a wide mouth coupled to a snap-fitting lid.
  • the container includes a neck area comprising of first iock area and a second lock area.
  • the container includes a cylindrically flowing body, blow moulded from an injection moulded perform/ a body segment blow moulded from an injection moulded perform of a pre-determined shape.
  • the container further includes a container side wall with handles herein referred as handle fitting notches and a container bottom wall, wherein the container side wall tapers towards the container bottom wall.
  • the said handle fitting notches of the container are positioned just below the neck/lid fitting area.
  • the present disclosure describes a broadly two staged process of manufacture of a blow moulded wide mouth container.
  • the process includes a multi-cavity injection moulding followed by a single cavity blo moulding.
  • the process includes injection moulding of a preform in an injection-moulding apparatus followed by placing the preform in a blow moulding cavity of a blow-moulding apparatus.
  • the process further includes moving of a body segment of the perform for defining a cylindrical shape/pre-determined shape on a container side wall and tapering the container side wall towards a container bottom wall.
  • the ensuing step after the above step comprises stretching of the container bottom wall with a centre rod to the bottom of the blow mould mechanically followed by blowing and inflating the container via compressed air to produce a finished container removed from the cavity.
  • Figure 1 is a side sectional view of a container in accordance with the present invention.
  • Figure 2a is sectional View of a container through, the injection moulded perform indicative of a container in accordance with the present invention.
  • Figure 2b represents the various wall thicknesses of the preform have been represented.
  • Figure 3a & 3b is a sectional view of the container, wherein the shaded region in fig 3 a shows the preform shapes before the blowing process and the shape of the container after blowing process and fig 3b shows the cavity of the mould used for blowing the preform in accordance with the present invention
  • Figure 4 is a flow diagram illustrating the step by step process involved in the manufacturing of blow moulded wide mouth pet container.
  • the present disclosure relates to blow moulded plastic containers and more particularly to a wide open mouth pet container having a snap fitted double lock and devoid of any undercut from the side wall of the container.
  • a blow moulded container comprises a wide mouth coupled to a snap-fitting lid.
  • an injection moulded perform is blow moulded with the help of compressed air and a centre rod (5); the said centre rod (5) stretches the perform at a downward direction towards the bottom wall (6) of the container with the help of the compressed air; wherein the said compress air is injected in a large volume with high speed and pressure inside the container within 20 to 30 mili seconds before the preform cools down and loses in stretching ability, to form a cylindrically flowing body/ a body segment of a pre-determined shape.
  • the associated injection mould and blow mould is made use of.
  • the perform may have lugs for attaching a snap-fitted handle after the container is blow moulded in a blow moulding machine.
  • the container formed includes a neck area (1) comprising of a first lock area (2) and a second lock area (3).
  • the container further includes handles referred as handle fitting notches (4), said handle fitting notches (4) of the container are positioned just below the neck/lid fitting area.
  • the container is further defined by a container side wall (7) at the inner periphery of the cylindrical body/body segment across the perform, and a container bottom wall (6).
  • the container sidewall (7) is of a pre-determined wall thickness and a predetermined diameter in terms of the peripheral circumference that is covered in lieu of the container in totality.
  • the container side wall (7) is devoid of undercuts unlike the existing containers in the market.
  • the container bottom wall (6) is of a diameter less than the pre-determined diameter of the container side wall (7).
  • the bottom end/bottom wall (6) of the container is shaped such that the container side wall (7) tapers towards the container bottom wall (6) as represented in Figure 1.
  • the container's material can be a thermoplastic resin, and in particular selected from a group of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), a PET and PEN blend, or polypropylene (PP).
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PP polypropylene
  • the injection moulded perform has a wall thickness in relation to the blowing operation performed during blow moulding of the container, such that the area/side walls of the container (7) that are to be stretched the maximum has to be kept thicker to achieve desired thickness of the container.
  • the side wall (7) thickness has typical relation to the neck (1) & bottom wall (6) thickness of the container.
  • the container has a snap-fitting lid which is again blow moulded in relation to the pre-determined diameter and wall thickness of the container and the container side wall.
  • a process of making a wide open mouth container is provided below.
  • the material employed in making the wide open mouth container is polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • the process includes a multi-cavity injection moulding followed by a single cavity blow moulding.
  • FIG. 3a & 3b is a sectional view of the container, wherein the shaded region in fig 3 a shows the preform shapes before the blowing process and herein is referred to as the preform before blowing (8) and the shape of the container after blowing process is achieved, herein referred to as the bottle after blowing (9), wherein further fig 3b shows the cavity of the mould (10) used for blowing the preform in accordance with the present invention;
  • injection moulding of a preform in an ' injection- moulding apparatus occurs.
  • the perform may have a snap fitting region and a handle fitting region on either sides of the container.
  • a twin cavity preform moulding apparatus may be used for making two performs.
  • the twin cavity preform moulding apparatus has the facility to extrude semi solid small pellets of thermoplastic resins after heating and melting the thermoplastic resin to form small melted pellets.., The small pellets of thermoplastic resin are then injected into the injection mould to form the preform.
  • the perform solidifies consisting a snap-fitting region and a handle fitting region.
  • the injection moulded preforms are stackable one iiiside the . other thereby facilitating low cost transportation of the preform for distant blowing.
  • This aspect is advantageous in comparison with blown bottles
  • This process of injection moulding determines the wall thickness pattern of the preform article in various area and ration of wall thickness. Thus it determines the wall thickness patter after blow moulding.
  • the ensuing step involves placing the preform in a blow:" moulding cavity of a blow-moulding apparatus.
  • the step involves moving a body segment of the perform for defining a cylindrical shape without undercuts on a container side wall and tapering the container side Wall towards a container bottom wall. The absence of undercuts is detrimental towards the functionality of the wide mouth container.
  • the body segment may also be blow moulded as per the requirements of a pre-determined shape of the wide mouth container.
  • the ensuing step involves stretching the container bottom wall with a centre rod to the bottom of the blow mould mechanically followed by blowing and inflating the container via compressed air. The inflating of the container occurs as per the pre-defined shape of the blowing mould.
  • the concluding step is removing the bottle from the mould for a finished container.
  • the side wall thickness of the container is again pre -determined at the perform stage as per the associated mould.
  • the container in the present disclosure having snap- fitted lid will be blown in a mould with the help of acentre rod (5) and compressed air .
  • the blowing operation is determined such that a specific side wall thickness is achieved to sustain the load while fitting the snap lid & stacking containers one above the other with the filled content in a high speed automatic filling line.
  • the second broad step has a lower cycle time in comparison with the former step, the injection moulding process which involes the injection moulding performs, therby : facilitating a faster overall process.
  • the blow moulded wide mouth pet container in lieu of the two staged process employed in the process of manufacturing the same as described in the present disclosure works advantageously over the horrle conventional pet containers in numerous ways.
  • the convenience with which removal of inner content of any product filled in the container to the optimum level can occur is extensive due to the pet containers being devoid of undercuts inside the container.
  • the wide mouth PET containers can be specially used for high viscous filled content. High viscosity usually makes the content highly sticky thereby making its removal a tedious one while in the present scenario in lieu of lack of undercuts and wide mouth of the PET containers the highly viscous can be physically removed by using a spatula.
  • the absence of undercuts in the container as described in the present disclosure also enables minimal residuals as compared to the present type of pet blow moulded containers available in the market.
  • the above mentioned advantage automatically ensures minimum wastage of the inner content filled in the container. Easy recycling and hastle-free cleaning of the container prior to disposal makes it environment friendly.
  • the wide mouth PET containers as described in the present disclosure can be filled at a faster speed at a higher volume feed rate due to a wide nozzle.
  • the faster filling into the container thus saves time & can reduce cycle time massively; specially in packaging and filling plants.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Closures For Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne un récipient à large embouchure moulé par soufflage. Le récipient moulé par soufflage comprend une large embouchure accouplée à un couvercle encliquetable. Le récipient comprend une zone col comprenant des première et secondes zones de verrouillage. Le récipient comprend un corps d'écoulement cylindrique moulé par soufflage à partir d'une préforme moulée par injection/un segment de corps moulé par soufflage à partir d'une préforme moulée par injection d'une forme prédéfinie. Le récipient comprend également une paroi latérale de récipient dotée de poignées appelées ici encoches d'installation de poignée et une paroi inférieure de récipient, la paroi latérale de récipient se resserrant vers la paroi inférieure de récipient. Lesdites encoches d'installation de poignée du récipient sont positionnées juste au-dessous de la zone d'installation de col/couvercle. Selon un autre aspect, la présente invention concerne un processus de fabrication généralement à deux étapes d'un récipient à large embouchure moulé par soufflage. Le processus comprend un moulage par injection à cavités multiples suivi d'un moulage par soufflage à cavité unique. Le processus comprend le moulage par injection d'une préforme dans un appareil de moulage par injection, suivi de la mise en place de la préforme dans une cavité de moulage par soufflage d'un appareil de moulage par soufflage, le segment de corps du récipient fini étant dépourvu de contre-dépouilles.
PCT/IN2017/000025 2016-02-06 2017-02-06 Récipient en pet à large embouchure moulé par soufflage et son processus de fabrication Ceased WO2017134680A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201621004308 2016-02-06
IN201621004308 2016-02-06

Publications (2)

Publication Number Publication Date
WO2017134680A2 true WO2017134680A2 (fr) 2017-08-10
WO2017134680A3 WO2017134680A3 (fr) 2017-10-05

Family

ID=59500692

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2017/000025 Ceased WO2017134680A2 (fr) 2016-02-06 2017-02-06 Récipient en pet à large embouchure moulé par soufflage et son processus de fabrication

Country Status (1)

Country Link
WO (1) WO2017134680A2 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4802295A (en) * 1987-04-28 1989-02-07 Plastipak Packaging, Inc. Blow molded polyethylene terephthalate container having IML textured label wall and method for making same
GB9016190D0 (en) * 1990-07-24 1990-09-05 Bxl Plastics Ltd Container
US6555033B2 (en) * 2001-06-27 2003-04-29 Graham Packaging Company, L.P. Method and apparatus for making a plastic container and closure combination
US20060121223A1 (en) * 2004-12-02 2006-06-08 Graham Packaging Company, L.P. Container package
US20140158686A1 (en) * 2007-07-23 2014-06-12 Letica Corporation Plastic container with double lock lid and tear band
EP2949441B1 (fr) * 2014-05-27 2018-09-19 The Procter and Gamble Company Procédé pour realiser un conteneur

Also Published As

Publication number Publication date
WO2017134680A3 (fr) 2017-10-05

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