GB1165856A - Method and Apparatus for the Continuous Manufacture of Flexible Plastics Tube Material - Google Patents

Method and Apparatus for the Continuous Manufacture of Flexible Plastics Tube Material

Info

Publication number
GB1165856A
GB1165856A GB21218/68A GB2121868A GB1165856A GB 1165856 A GB1165856 A GB 1165856A GB 21218/68 A GB21218/68 A GB 21218/68A GB 2121868 A GB2121868 A GB 2121868A GB 1165856 A GB1165856 A GB 1165856A
Authority
GB
United Kingdom
Prior art keywords
fastenings
film
rollers
finger
attached
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
Application number
GB21218/68A
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.)
Minigrip Europe AS
Original Assignee
Minigrip Europe AS
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 Minigrip Europe AS filed Critical Minigrip Europe AS
Publication of GB1165856A publication Critical patent/GB1165856A/en
Expired 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • 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
    • B29C48/03—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
    • B29C48/03—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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical 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
    • 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
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • 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
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8131—Making bags having interengaging closure elements
    • B31B70/8132—Applying the closure elements in the machine direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

1,165,856. Extruding tubes; making bags; seaming non-metallic sheet material. MINIGRIP EUROPE A/S. 3 May, 1968 [3 May, 1967; 28 June, 1967], No. 21218/68. Headings B5A, B5B, B5D and B5K. [Also in Divisions B8 and E2] In the manufacture of plastics tubing having longitudinally extending releasable fastenings, which tubing is particularly intended for the production of bags or sachets, the tube is extruded, and preformed releasable fastenings are attached to either the outer or inner surface of the tube downstream of the extrusion die, the speeds of advance of the tube and the fastenings being the same at the place where they are united. In the embodiment of Figs. 1 and 3, an inflated tubular film 1 is extruded from an orifice 2 and engaged fastenings 15, 16 are introduced to the interior of the tube via a preheater 19 and a passageway in die 3 and mandrel 3a. The fastenings 15, 16 are attached to the film 1 by forming a longitudinal fold in the latter by means of rollers 20, 21, Fig. 3, adjacent a radially extending finger 22 attached to central post 25, Fig. 1. The fastenings are separated by finger 22 and the fixing flanges 15a, 15b, 16a, 16b of the fastenings are heated by resistance elements 23, 24 in finger 22 as rollers 20, 21 press the flanges and film into contact with one another, finger 22 acting on an anvil. Rollers 20, 21 may be heated in addition to or instead of finger 22. After welding of the fastenings they are re-engaged by rollers 28, 29. Fastenings 15, 16 may be introduced within the film disengaged. In the embodiment of Figs. 7 and 8 (not shown), engaged fastenings (33, 34) have their fixing flanges (36a, 37a) preheated by heater (38) and the fastenings are applied externally to inflated tubular film 1 by rollers (41, 42). In addition, the film is produced with a longitudinal groove (32) by means of a projection (31) at the die orifice and this groove becomes situated between flange (36a) and the engageable portion of fastening (33), Fig. 8 (not shown). In a modification, Figs. 9-11 (not shown), a cut is made in the film instead of, but at the same location as, groove 32, by means of a blade (49) attached to a cutting device (47). This device is inserted downstream of rollers (43), Fig. 10 (not shown), and a finger (44) which separates the fastenings. The latter are re-engaged by rollers (50, 51). In a third embodiment, Figs. 12, 13 (not shown), fastenings (33, 34) are attached to the film 1, at a point where the latter is non-tacky, by means of welding rollers (54, 55) co-acting with an anvil (56) within the film. In the first embodiment, Figs. 1 and 3, and Figs. 2, 4 and 5 (not shown), the product may be formed into sachets, Fig. 6 (not shown), by transversely cutting and welding the film as at (9, 9a) and longitudinally cutting the film as at (10). In the embodiment of Figs. 7 and 8 (not shown), a sachet may be made having initially a double closure, i.e. the interengaged fastenings (33, 34) and groove (32). Such a sachet is opened by pulling tab (35), Fig. 8 (not shown), of fastening (33) to first disengage the fastenings and then to tear the sachet along groove (32). It is also mentioned that the product may be used as a tubular sheath for electric wires. Polyethylene and polyvinyl materials are specified.
GB21218/68A 1967-05-03 1968-05-03 Method and Apparatus for the Continuous Manufacture of Flexible Plastics Tube Material Expired GB1165856A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63581867A 1967-05-03 1967-05-03
US64971167A 1967-06-28 1967-06-28

Publications (1)

Publication Number Publication Date
GB1165856A true GB1165856A (en) 1969-10-01

Family

ID=27092458

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21218/68A Expired GB1165856A (en) 1967-05-03 1968-05-03 Method and Apparatus for the Continuous Manufacture of Flexible Plastics Tube Material

Country Status (5)

Country Link
BE (1) BE714517A (en)
DK (1) DK131662C (en)
FR (1) FR1565116A (en)
GB (1) GB1165856A (en)
LU (1) LU56002A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066780A1 (en) * 1981-05-28 1982-12-15 Seisan Nippon Sha, Ltd. Method of bonding synthetic resin fastener having fusion heat to flat film
GB2184997A (en) * 1985-12-31 1987-07-08 Sai Pak Chung Resealable bag
WO2013149908A1 (en) * 2012-04-02 2013-10-10 Velcro Industries B.V. Blown film forming method and apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2621854B1 (en) * 1987-10-20 1992-03-13 Symalit Lizenz Ag PROCESS FOR THE CONTINUOUS MANUFACTURE OF A PLASTIC TUBE WITH LONGITUDINAL CLOSURE AND TUBES MANUFACTURED BY THIS PROCESS
BE1010676A3 (en) * 1996-10-10 1998-11-03 Plastiflex Europ N V Method and apparatus for manufacturing a flexible hose combination.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066780A1 (en) * 1981-05-28 1982-12-15 Seisan Nippon Sha, Ltd. Method of bonding synthetic resin fastener having fusion heat to flat film
GB2184997A (en) * 1985-12-31 1987-07-08 Sai Pak Chung Resealable bag
WO2013149908A1 (en) * 2012-04-02 2013-10-10 Velcro Industries B.V. Blown film forming method and apparatus
US9090005B2 (en) 2012-04-02 2015-07-28 Velcro Industries B.V. Blown film fastening

Also Published As

Publication number Publication date
DK131662B (en) 1975-08-18
DE1778477B2 (en) 1972-10-12
DE1778477A1 (en) 1971-12-30
DK131662C (en) 1976-01-19
BE714517A (en) 1968-09-16
FR1565116A (en) 1969-04-25
LU56002A1 (en) 1968-07-12

Similar Documents

Publication Publication Date Title
US3608439A (en) Method of making a flexible pilfer proof closure construction for bags
US3532571A (en) Method and apparatus for forming continuous plastic tubing with separable pressure reclosable fastener strips attached to the surface thereof
US3380481A (en) Closed tube with fastener members
US4930905A (en) Thermoplastic bag with integral draw strip and method of manufacture
US3685562A (en) Flexible pilfer proof closure construction for bags
US8070359B2 (en) Plastic bag with pour spout and reinforced bottom end
US3368740A (en) Sheet material with film tear line
US5384942A (en) Closure device for bags and a method and a tool for producing same
US3546327A (en) Method of making a ventilated plastic bag
DE60113942T2 (en) Reclosable seal, packaging and procedures
US4651504A (en) Double funnel bag material and method
US4419159A (en) Manufacture of plastic bags with interlocking profile extrusions
US4235653A (en) Method for making reclosable bags
GB1602057A (en) Reclosable bag and method of and apparatus for making the same
GB1430771A (en) Process and apparatus for forming a composite pipe of synthetic resin containing separating plates therein
EP0276554A2 (en) Bag with resealable closure and a method of manufacturing same
US4657792A (en) Funnel material for bags and method
KR950031456A (en) How to Mold Strip Products from Thermoplastics
NZ213941A (en) Integrally serially connected top fillable bags with reclosable zippers: method and apparatus for filling and separating
GB1438729A (en) Fastener strips
US3015133A (en) Method of making jacketed strip-wound metal hose
NZ205909A (en) Making plastics bags with interlocking rib and groove elements
EP0475126A2 (en) Method of forming a headed thermoplastic tube
SE508369C2 (en) Method and apparatus for making bag packages
US5057065A (en) Process for making draw tape bags with integrally formed draw tapes

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee