GB1275290A - Improvements in and relating to the manufacture of monoaxially stretched films - Google Patents
Improvements in and relating to the manufacture of monoaxially stretched filmsInfo
- Publication number
- GB1275290A GB1275290A GB3507569A GB3507569A GB1275290A GB 1275290 A GB1275290 A GB 1275290A GB 3507569 A GB3507569 A GB 3507569A GB 3507569 A GB3507569 A GB 3507569A GB 1275290 A GB1275290 A GB 1275290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stretching
- gap
- stage
- film
- stages
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
- D01D5/423—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by fibrillation of films or filaments
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
- B29C55/065—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed in several stretching steps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
1275290 Stretching and cutting films longitudinally KALLE AG 11 July 1969 [12 July 1968 3 Aug 1968] 35075/69 Heading B5B Thermoplastic film is stretched longitudinally in two stages, the first stage using a narrow stretching gap system in which the stretching gap length is only a fraction of the film width and not more than a few centimetres, and the second stage using a wide stretching gap system in which the stretching gap length is of the order of the film width and up to several metres; longitudinal cutting of the film may take place after at least one of the stretching stages, preferably between the two stages, and may result in film strips of high or low fibrillation tendency according to the proportion of the total stretching carried out in each stage. Stretching apparatus includes roller systems defining a narrow stretching gap 12 and a wide stretching gap 17, a cutting device 14, and a heating device 15. Each stretching stage may be subdivided (Fig. 4, not shown). Stretching ratios may be form 2 : 1 to 6 : 1 in the narrow gap system and from 1À2 : 1 to 5 : 1 in the wide gap system. Preferred materials are polypropylene and high density polyethylene.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1779150A DE1779150C2 (en) | 1968-07-12 | 1968-07-12 | Process for the production of monoaxially stretched film strips |
| DE19681779375 DE1779375B1 (en) | 1968-08-03 | 1968-08-03 | DEVICE FOR STRETCHING A FILM MADE OF THERMOPLASTIC PLASTIC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1275290A true GB1275290A (en) | 1972-05-24 |
Family
ID=25755774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3507569A Expired GB1275290A (en) | 1968-07-12 | 1969-07-11 | Improvements in and relating to the manufacture of monoaxially stretched films |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1275290A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006067065A1 (en) * | 2004-12-23 | 2006-06-29 | S.I.M.A. Società Industrie Meccaniche Affini A R.L. | Apparatus, for pulling or dragging plastic strips, for example of polypropylene or of polyethylene, for the production of straps, raffia or of other types of strips |
| WO2007057923A1 (en) * | 2005-11-21 | 2007-05-24 | Lohia Starlinger Limited | Method and apparatus for producing oriented slit film tapes |
| WO2010112418A1 (en) | 2009-03-31 | 2010-10-07 | Dsm Ip Assets B.V. | Method and device for producing a polymer tape |
-
1969
- 1969-07-11 GB GB3507569A patent/GB1275290A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006067065A1 (en) * | 2004-12-23 | 2006-06-29 | S.I.M.A. Società Industrie Meccaniche Affini A R.L. | Apparatus, for pulling or dragging plastic strips, for example of polypropylene or of polyethylene, for the production of straps, raffia or of other types of strips |
| WO2007057923A1 (en) * | 2005-11-21 | 2007-05-24 | Lohia Starlinger Limited | Method and apparatus for producing oriented slit film tapes |
| EA013853B1 (en) * | 2005-11-21 | 2010-08-30 | Лохия Старлингер Лимитед | Method and apparatus for producing oriented slit film tapes |
| US8003031B2 (en) | 2005-11-21 | 2011-08-23 | Lohia Starlinger Limited | Method and apparatus for producing oriented slit film tapes |
| WO2010112418A1 (en) | 2009-03-31 | 2010-10-07 | Dsm Ip Assets B.V. | Method and device for producing a polymer tape |
| US9316465B2 (en) | 2009-03-31 | 2016-04-19 | Dsm Ip Assets B.V. | Method and device for producing a polymer tape |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |