IT1260327B - PROCEDURE AND DEVICE FOR THE EXTRACTION AND PLACEMENT OF A LEAF TUBE IN EXTRUDED AND BLOWN PLASTIC MATERIAL TO A TUBULAR LEAF BUBBLE. - Google Patents

PROCEDURE AND DEVICE FOR THE EXTRACTION AND PLACEMENT OF A LEAF TUBE IN EXTRUDED AND BLOWN PLASTIC MATERIAL TO A TUBULAR LEAF BUBBLE.

Info

Publication number
IT1260327B
IT1260327B ITBZ920045A ITBZ920045A IT1260327B IT 1260327 B IT1260327 B IT 1260327B IT BZ920045 A ITBZ920045 A IT BZ920045A IT BZ920045 A ITBZ920045 A IT BZ920045A IT 1260327 B IT1260327 B IT 1260327B
Authority
IT
Italy
Prior art keywords
leaf
bubble
tubular
extraction
extruded
Prior art date
Application number
ITBZ920045A
Other languages
Italian (it)
Inventor
Frank Bosse
Original Assignee
Windmoeller & Hoelscher
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 Windmoeller & Hoelscher filed Critical Windmoeller & Hoelscher
Publication of ITBZ920045A0 publication Critical patent/ITBZ920045A0/en
Publication of ITBZ920045A1 publication Critical patent/ITBZ920045A1/en
Application granted granted Critical
Publication of IT1260327B publication Critical patent/IT1260327B/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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/10—Bending or folding of blown tubular films, e.g. gusseting
    • 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
    • B29C48/355—Conveyors for extruded 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
    • B29C48/001—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Tea And Coffee (AREA)

Abstract

Per l'estrazione e la messa di piatto di un tubo di foglia in materiale plastico, estruso e soffiato ad una bolla di una foglia tubolare, la bolla di foglia tubolare viene deformata sostanzialmente a forma ovale da un dispositivo per la messa di piatto preliminare e viene successivamente a piatto da un dispositivo per la messa di piatto principale. Per poter, mettere di piatto esente da disturbi il nastro di foglia tubolare con un'alta velocità di estrazione, senza che siano da temere una vibrazione od uno sfregamento od un danneggiamento della foglia, la bolla di foglia tubolare viene messa di piatto in modo che l'asse lungo della bolla di foglia tubolare, deformata a forma ovale all'atto della messa di piatto, si trova ad angolo retto rispetto al piano della bolla di foglia tubolare messa di piatto.For the extraction and plate placing of a plastic tube leaf, extruded and blown to a bubble of a tubular leaf, the tubular leaf bubble is deformed substantially in an oval shape by a device for placing a preliminary plate and it then comes flat from a device for setting the main course. In order to be able to place the tubular leaf strip flat with no disturbance at a high extraction speed, without causing any vibration or rubbing or damage to the leaf, the tubular leaf bubble is placed flat so that the long axis of the tubular leaf bubble, deformed in an oval shape when placing the plate, is at a right angle to the plane of the tubular leaf bubble placed flat.

ITBZ920045A 1991-11-21 1992-11-05 PROCEDURE AND DEVICE FOR THE EXTRACTION AND PLACEMENT OF A LEAF TUBE IN EXTRUDED AND BLOWN PLASTIC MATERIAL TO A TUBULAR LEAF BUBBLE. IT1260327B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4138327 1991-11-21
DE4202450A DE4202450A1 (en) 1991-11-21 1992-01-29 Extruded plastics film tube - is shaped into an oval before folding flat with cooling to prevent material damage

Publications (3)

Publication Number Publication Date
ITBZ920045A0 ITBZ920045A0 (en) 1992-11-05
ITBZ920045A1 ITBZ920045A1 (en) 1993-05-22
IT1260327B true IT1260327B (en) 1996-04-05

Family

ID=25909359

Family Applications (1)

Application Number Title Priority Date Filing Date
ITBZ920045A IT1260327B (en) 1991-11-21 1992-11-05 PROCEDURE AND DEVICE FOR THE EXTRACTION AND PLACEMENT OF A LEAF TUBE IN EXTRUDED AND BLOWN PLASTIC MATERIAL TO A TUBULAR LEAF BUBBLE.

Country Status (2)

Country Link
DE (1) DE4202450A1 (en)
IT (1) IT1260327B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10243959B4 (en) * 2002-09-20 2007-11-29 Windmöller & Hölscher Kg Apparatus for producing film webs from a film tube
CN106313635A (en) * 2016-08-25 2017-01-11 江苏万乐复合材料有限公司 Inner film bag crease preventing method based on fully-automatic cutting, covering and sewing all-in-one machine for woven bags
CN108082990B (en) * 2017-12-14 2024-01-30 华南理工大学 Film winding method and device based on traction path compensation

Also Published As

Publication number Publication date
ITBZ920045A1 (en) 1993-05-22
ITBZ920045A0 (en) 1992-11-05
DE4202450A1 (en) 1993-05-27

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961127