US3843025A - Method of preparing plastic containers - Google Patents

Method of preparing plastic containers Download PDF

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Publication number
US3843025A
US3843025A US00372576A US37257673A US3843025A US 3843025 A US3843025 A US 3843025A US 00372576 A US00372576 A US 00372576A US 37257673 A US37257673 A US 37257673A US 3843025 A US3843025 A US 3843025A
Authority
US
United States
Prior art keywords
container
side wall
opening
elongated
fluid transfer
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
US00372576A
Other languages
English (en)
Inventor
W Holt
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.)
Hercules LLC
Original Assignee
Hercules LLC
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 Hercules LLC filed Critical Hercules LLC
Priority to US00372576A priority Critical patent/US3843025A/en
Priority to AR254040A priority patent/AR208289A1/es
Priority to GB2236074A priority patent/GB1430336A/en
Priority to FI1559/74A priority patent/FI155974A/fi
Priority to BE145104A priority patent/BE815949A/fr
Priority to NO742140A priority patent/NO742140L/no
Priority to NL7408216A priority patent/NL7408216A/xx
Priority to DE2429351A priority patent/DE2429351A1/de
Priority to SE7408115A priority patent/SE7408115L/xx
Priority to FR7422548A priority patent/FR2234200B3/fr
Priority to IT24304/74A priority patent/IT1015310B/it
Priority to JP49071202A priority patent/JPS5042973A/ja
Priority to ES427521A priority patent/ES427521A1/es
Priority to ES427525A priority patent/ES427525A1/es
Priority to AU70335/74A priority patent/AU7033574A/en
Priority to BR5077/74A priority patent/BR7405077D0/pt
Priority to DK338374A priority patent/DK338374A/da
Application granted granted Critical
Publication of US3843025A publication Critical patent/US3843025A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D1/00—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, by deep-drawing operations performed on sheet material
    • B65D1/12—Cans, casks, barrels, or drums
    • B65D1/20—Cans, casks, barrels, or drums characterised by location or arrangement of filling or discharge apertures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1032—Pumps having a pumping chamber with a deformable wall actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1033—Pumps having a pumping chamber with a deformable wall the deformable wall, the inlet and outlet valve elements being integrally formed, e.g. moulded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/30—Dip tubes
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2017—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements outside the article

Definitions

  • This invention relates to the art of preparing plastic containers incorporating means for effecting communication between the interior and exterior thereof through their wall. In a specific embodiment it relates to a method of blow-molding a bottle incorporating a pump assembly including a channel for conducting a liquid from the interior of the bottle through the wall.
  • an elongated channel defining element is placed in a mold and a parison is blow-molded into contact with the channel defining element.
  • a problem encountered with the technique as taught in the reference is that the container wall covers the inlet to the channel defining element, thereby blocking communication between the channel and the interior of the container. It then becomes necessary to introduce a needle or other puncturing device through the container wall and into the channel, opening up communication between the channel and the interior of the container, then rescaling the puncture on the outside of the channel. This method is less than satisfactory as it involves extra handling and also leaves a point of potential weakness on the wall of the container. 1
  • FIGS. 1 and 2 are exploded perspective views of a pump assembly to be employed in carrying out the instant invention.
  • FIG. 3 is a view of a mold having the pump assembly of FIG. 1 and a parison therein, preparatory to forming a bottle.
  • FIG. 4 is a view of a blow-molded bottle incorporating the pump assembly of FIGS. 1 and 2.
  • FIG. 5 is a view taken along section line 5-5 of FIG. 4.
  • FIG. 6 is a view along section line 6-6 of FIG. 4 showing the inlet channel as incorporated into a bottle.
  • FIGS. 7, 8 and 9 depict other structures in which the principles of this invention are employed.
  • FIGS. 1 and 2 there are illustrated inner and outer exploded views respectively of a pump assembly 10 comprising a preformed channel defining and support member 12, a flexible valve 14 and a shroud 16.
  • the channel defining member includes an elongated wall 11 and a fiat valve support table 18. Projections 13 and 13' joined at their upper extremity by an arcuate portion 21, extend inwardly from the inner surface of the elongated wall 11 todefine a channel 15 communicating with the outersurface of valve support table 18 via opening 20 (FIG. 1)
  • the lower end of channel 15 has an enlarged portion 22 which will be more fully explained hereinafter.
  • At the upper end of valve support table 18 there is an: elongated nozzle pin 26, and an inner and outer sealing lip, 17 and 19 respectively, projecting from thesurface of table 18.
  • the flexible valve member 14 includes an annular peripheral 0" ring 28 which surrounds and encloses an inner annular ring 30, the two rings being separated by an annular groove 31.
  • the inner annular ring 30 has a greater height than the peripheral annular 0" ring 28 and at its outer extremity it supports valve face plate 32 which, in turn, supports a bubble 33.
  • Disposed transversely across the inner annular ring 30 and extending very slightly above the inner extremity thereof are two vane portions 34 and 35.
  • elements 30, 32, 33, 34'and 35 form three chambers 36, 37 and 38 on the inner surface of member 14.
  • a poppet 39 At the top of chamber 38 is a poppet 39, containing discharge opening 48.
  • the poppet 39 is encircled by sealing ring 23.
  • the shroud 16 comprises a flat section 40 having an opening 42 adapted to receive bubble 33 and a hollow tubular nozzle 44 extending outwardly from the outer surface thereof, and terminating in discharge opening 45.
  • the top part 41 of flat section 40 is undercut slightly to receive sealing ring 23 and contains an opening 43 extending through nozzle 44 to the end thereof where it is reduced to the size of discharge opening 45. Opening 43 is slightly larger than nozzle pin 26.
  • Flat section 40 is surrounded by an annular raised shoulder 46 and a peripheral annular lip 47.
  • valve 14 When elements 12, 14 and 16 are assembled, valve 14 is lined up on valve support table 18 so that chamber 36 is in communication with channel 15 via opening 20 and nozzle pin 26 is inserted in discharge opening 48 and inner sealing ring 17 on table 18 fits into annular groove 31.
  • Shroud 16 is placed over the valve 14 with opening 42 fitting over bubble 33 and nozzle pin 26 fitting into opening 43 in nozzle 44.
  • flat surface 32 of the valve rests against flat section 40 and sealing ring 23 fits into the undercut top section 41.
  • the assembled pump 10 is integrally united with a blow-molded bottle during the manufacture thereof.
  • the bottle is blow-molded by extruding a parison 50, clamping a pair of mold halves 52 and 54 about the parison and expanding the parison to fill the mold in a manner well known to the art.
  • the assembled pump 10 is incorporated with the bottle during the blow-molding operation by inserting the pump 10 into a corresponding cavity in the mold half 54 prior to closing the mold upon the parison.
  • the parison bridges over the side walls 13 and 13 and seals against the inside surface of the elongated wall 11 of member 12 to enclose channel 15 as shown in FIG. 5 and FIG. 6, and also seals against the surface of plate portion 18 of member 12.
  • the enlarged end 22 of the channel has an arched edge wall 24 which, with the inner surface of wall 11, defines an inlet opening 25 to the channel 15.
  • the circumference angle and height of the arched edge wall 24 are so proportioned that when the parison engages and seals against it under blowing pressure, the parison will stretch and enter the opening 25 of the inlet channel formed by the arched wall 24 and f1- nally rupture, thereby communicating the interior of the bottle with the channel 15.
  • the depth of the opening relative to its peripheral dimension is also important since enough length must be provided to allow the parison to stretch into the cavity and rupture prior to engaging the rear of the cavity. If the peripheral dimension of the opening is too large, then the parison will either drape into the cavity behind the edge of the opening and engage the wall behind without rupturing rather than stretching and rupturing, or it will simply continue to stretch without reaching its elastic limit and not rupture.
  • FIG. 7 depicts in cutaway a blow-molded container having a breather tube 62 integrally molded therewith so that its contents can be poured smoothly.
  • FIG. 8 depicts a squeeze bottle 65 having a suitably bent discharge tube 66 integrally molded therewith.
  • FlG. 9 depicts a blow-molded container such as, e.g., a carboy, having a valve assembly 72 and a pouring spout 74 integrally molded therewith.
  • FIGS. 7, 8 and 9 are fabricated using the same techniques and the same process considerations as are required in forming the bottle described previously. That is to say, a previously prepared channel defining member is inserted into a mold and the container is blow-molded into contact therewith.
  • the insert can, and preferably will, have an exterior flat surface analogous to the channel support member 12 of the bottle described hereinabove which becomes a part of the exterior container wall as does the channel support member 12.
  • the same considerations relating to the size of the opening as it relates to the temperature, pressure and polymer identity apply. For any structure desired, these interrelationships can readily be determined empirically.
  • a blow molded thermoplastic container comprising integral bottom, top and side walls, and an elongated fluid transfer member embedded in a vertical position in a side wall, said member including an elongated vertical flat portion having a pair of substantially parallel elongated ridges projecting therefrom toward said side wall, said ridges being spaced apart and positioned in abutting relationship to said side wall to form an enclosed vertical passageway, the top of said passageway being in communication with the exterior environment, the bottoms of each ridge being enlarged and flared inwardly toward the side wall and having an arched portion interconnecting the ridges to define an enlarged tapered inlet chamber, the side wall of said container extending at least partially into the inlet chamber and having an opening therein whereby the interior of the container is in communication with the vertical passageway.
  • a container as recited in claim 1 wherein the fluid transfer passage is an elongated channel extending to substantially the bottom of the container and having its inlet opening located at its lower extremity.
  • a container as recited in claim 2 including a manually operated pumping means adapted to remove fluid from the container via the fluid transfer passage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
US00372576A 1973-06-22 1973-06-22 Method of preparing plastic containers Expired - Lifetime US3843025A (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
US00372576A US3843025A (en) 1973-06-22 1973-06-22 Method of preparing plastic containers
AR254040A AR208289A1 (es) 1973-06-22 1974-01-01 Envase termoplastico moldeado por soplado
GB2236074A GB1430336A (en) 1973-06-22 1974-05-20 Method of preparing plastics containers
FI1559/74A FI155974A (fr) 1973-06-22 1974-05-21
BE145104A BE815949A (fr) 1973-06-22 1974-06-05 Procede de fabrication de recipients en matiere plastique
NO742140A NO742140L (fr) 1973-06-22 1974-06-12
SE7408115A SE7408115L (fr) 1973-06-22 1974-06-19
DE2429351A DE2429351A1 (de) 1973-06-22 1974-06-19 Durch hohlkoerperblasen hergestellter kunststoffbehaelter und verfahren zu seiner herstellung
NL7408216A NL7408216A (fr) 1973-06-22 1974-06-19
FR7422548A FR2234200B3 (fr) 1973-06-22 1974-06-20
JP49071202A JPS5042973A (fr) 1973-06-22 1974-06-21
ES427521A ES427521A1 (es) 1973-06-22 1974-06-21 Un recipiente de termoplastico moldeado por soplado.
IT24304/74A IT1015310B (it) 1973-06-22 1974-06-21 Metodo per la produzione di con tenitori di materia plastica
ES427525A ES427525A1 (es) 1973-06-22 1974-06-21 Un procedimiento para fabricar un recipiente con medios in-tegrales para efectuar la comunicacion entre el interior de dicho recipiente y el exterior del mismo.
AU70335/74A AU7033574A (en) 1973-06-22 1974-06-21 Plastic containers
BR5077/74A BR7405077D0 (pt) 1973-06-22 1974-06-21 Recipiente termoplastico e processo para fabrica-lo
DK338374A DK338374A (fr) 1973-06-22 1974-06-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00372576A US3843025A (en) 1973-06-22 1973-06-22 Method of preparing plastic containers

Publications (1)

Publication Number Publication Date
US3843025A true US3843025A (en) 1974-10-22

Family

ID=23468750

Family Applications (1)

Application Number Title Priority Date Filing Date
US00372576A Expired - Lifetime US3843025A (en) 1973-06-22 1973-06-22 Method of preparing plastic containers

Country Status (16)

Country Link
US (1) US3843025A (fr)
JP (1) JPS5042973A (fr)
AR (1) AR208289A1 (fr)
AU (1) AU7033574A (fr)
BE (1) BE815949A (fr)
BR (1) BR7405077D0 (fr)
DE (1) DE2429351A1 (fr)
DK (1) DK338374A (fr)
ES (2) ES427521A1 (fr)
FI (1) FI155974A (fr)
FR (1) FR2234200B3 (fr)
GB (1) GB1430336A (fr)
IT (1) IT1015310B (fr)
NL (1) NL7408216A (fr)
NO (1) NO742140L (fr)
SE (1) SE7408115L (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2365425A1 (fr) * 1976-09-28 1978-04-21 Transformat Mat Plastiques Moyen de rigidification des parois d'un reservoir en matiere plastique obtenu par extrusion-soufflage
WO1992014599A1 (fr) * 1991-02-18 1992-09-03 Polyinvent Ab Procede d'extrusion-soufflage
US5385302A (en) * 1990-10-25 1995-01-31 Contico Low cost trigger sprayer
US5425482A (en) * 1990-10-25 1995-06-20 Contico International, Inc. Trigger sprayer
WO1997040538A1 (fr) * 1996-04-24 1997-10-30 Olimpio Stocchiero Bac pour accumulateurs au plomb
EP1598118A1 (fr) * 2004-05-21 2005-11-23 The Procter & Gamble Company Pompe pour distributeur de liquide
US20050265120A1 (en) * 2004-05-28 2005-12-01 Fuji Photo Film Co., Ltd. Ultrasonic dispersion device
US20170021375A1 (en) * 2014-04-10 2017-01-26 Gb Developpement Fluid dispensing device, and valve having a return means

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2558377B1 (fr) * 2010-04-12 2023-12-06 1Touch Holdings, Inc. Système de distribution dosée à configuration d'embarcation emboîtée

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2365425A1 (fr) * 1976-09-28 1978-04-21 Transformat Mat Plastiques Moyen de rigidification des parois d'un reservoir en matiere plastique obtenu par extrusion-soufflage
US5593093A (en) * 1990-10-25 1997-01-14 Contico International, Inc. Low cost trigger sprayer having elastomeric pump and inlet valve
US5385302A (en) * 1990-10-25 1995-01-31 Contico Low cost trigger sprayer
US5425482A (en) * 1990-10-25 1995-06-20 Contico International, Inc. Trigger sprayer
US5509608A (en) * 1990-10-25 1996-04-23 Contico International, Inc. Low cost trigger sprayer having spinner with integral elastomeric check and primary valves
US5551636A (en) * 1990-10-25 1996-09-03 Contico Internatioal, Inc. Low cost trigger sprayer having elastomeric pump with internal guide means
US5615835A (en) * 1990-10-25 1997-04-01 Contico International, Inc. Trigger sprayer having disc valve
WO1992014599A1 (fr) * 1991-02-18 1992-09-03 Polyinvent Ab Procede d'extrusion-soufflage
WO1997040538A1 (fr) * 1996-04-24 1997-10-30 Olimpio Stocchiero Bac pour accumulateurs au plomb
US6022636A (en) * 1996-04-24 2000-02-08 Stocchiero; Olimpio Case for lead accumulators
EP1598118A1 (fr) * 2004-05-21 2005-11-23 The Procter & Gamble Company Pompe pour distributeur de liquide
WO2005113158A1 (fr) * 2004-05-21 2005-12-01 The Procter & Gamble Company Pompes pour distributeurs de fluide
US20050265120A1 (en) * 2004-05-28 2005-12-01 Fuji Photo Film Co., Ltd. Ultrasonic dispersion device
US20170021375A1 (en) * 2014-04-10 2017-01-26 Gb Developpement Fluid dispensing device, and valve having a return means
US10695782B2 (en) * 2014-04-10 2020-06-30 Gb Development Fluid dispensing device, and valve having a return means

Also Published As

Publication number Publication date
ES427525A1 (es) 1976-07-16
BE815949A (fr) 1974-09-30
NL7408216A (fr) 1974-12-24
DE2429351A1 (de) 1975-01-16
AR208289A1 (es) 1976-12-20
IT1015310B (it) 1977-05-10
BR7405077D0 (pt) 1975-01-28
ES427521A1 (es) 1976-08-01
AU7033574A (en) 1976-01-08
FI155974A (fr) 1974-12-23
GB1430336A (en) 1976-03-31
FR2234200B3 (fr) 1977-05-06
SE7408115L (fr) 1974-12-23
FR2234200A1 (fr) 1975-01-17
DK338374A (fr) 1975-02-17
JPS5042973A (fr) 1975-04-18
NO742140L (fr) 1975-01-20

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