GB1378750A - Apertured film - Google Patents
Apertured filmInfo
- Publication number
- GB1378750A GB1378750A GB3643572A GB3643572A GB1378750A GB 1378750 A GB1378750 A GB 1378750A GB 3643572 A GB3643572 A GB 3643572A GB 3643572 A GB3643572 A GB 3643572A GB 1378750 A GB1378750 A GB 1378750A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- ribbons
- oriented
- slitting
- slits
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D28/00—Producing nets or the like, e.g. meshes, lattices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Nonwoven Fabrics (AREA)
Abstract
1378750 Apertured film CONSOLIDATEDBATHURST Ltd 23 Nov 1971 [30 Nov 1970] 36435/72 Divided out of 1378749 Heading B5B A molecularly oriented apertured film for incorporation into laminates comprises spaced elongated ribbons defining openings between, the ribbons being oriented in their longitudinal direction and lying in a common plane when the film is flat, the adjacent extremities of those ribbons which extend to the side of the film being integrally interconnected along border portions 70 (Fig. 6). The film may be made by slitting a thermoplastic film (suitable materials being listed) with heated knives and simultaneously or subsequently orienting it at elevated temperature by gripping the border sections and moving them apart by means of a tenter. Preferably the film is slit laterally and is stretched in the direction of the slits so that the ribbons formed by slitting are reduced in width and the openings are formed; the openings may have substantially zero width if the film has been folded or corrugated in the direction of stretch. In specific embodiments laterally slit films are oriented to produce films having 50, 74 and oriented ribbons 52, 74. The slit pattern was constituted by staggered rows of slits in Fig. 4, and by parallel near full-width slits in Fig. 6. The film may be extruded, cast or blown and the heat of formation may be utilized for slitting. Specification 1,378,749 describes and claims methods and apparatus for laminating, which may use the above films.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9364670A | 1970-11-30 | 1970-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1378750A true GB1378750A (en) | 1974-12-27 |
Family
ID=22240030
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5427671A Expired GB1378749A (en) | 1970-11-30 | 1971-11-23 | Method and apparatus for making laminates |
GB3643572A Expired GB1378750A (en) | 1970-11-30 | 1971-11-23 | Apertured film |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5427671A Expired GB1378749A (en) | 1970-11-30 | 1971-11-23 | Method and apparatus for making laminates |
Country Status (8)
Country | Link |
---|---|
AU (1) | AU459808B2 (en) |
CA (1) | CA1002273A (en) |
DE (1) | DE2157918A1 (en) |
FR (1) | FR2115462B1 (en) |
GB (2) | GB1378749A (en) |
IT (2) | IT941813B (en) |
NL (1) | NL7116251A (en) |
ZA (1) | ZA717951B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0075306A1 (en) * | 1981-09-23 | 1983-03-30 | Moplefan S.p.A. | Process for the netlike opening of fibrilled films |
US5156495A (en) | 1978-10-16 | 1992-10-20 | P. L. G. Research Limited | Plastic material mesh structure |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2462902A1 (en) * | 1979-08-10 | 1981-02-20 | Oreal | ABSORBENT ELEMENT COMPRISING AT LEAST ONE SHEET OF PLASTIC MATERIAL WITH A DEPLOYED STRUCTURE |
-
1971
- 1971-11-23 DE DE19712157918 patent/DE2157918A1/en active Pending
- 1971-11-23 GB GB5427671A patent/GB1378749A/en not_active Expired
- 1971-11-23 GB GB3643572A patent/GB1378750A/en not_active Expired
- 1971-11-25 AU AU36161/71A patent/AU459808B2/en not_active Expired
- 1971-11-26 CA CA128,740A patent/CA1002273A/en not_active Expired
- 1971-11-26 NL NL7116251A patent/NL7116251A/xx unknown
- 1971-11-26 ZA ZA717951A patent/ZA717951B/en unknown
- 1971-11-26 FR FR7142581A patent/FR2115462B1/fr not_active Expired
- 1971-11-27 IT IT31748/71A patent/IT941813B/en active
- 1971-11-29 IT IT31781/71A patent/IT953129B/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5156495A (en) | 1978-10-16 | 1992-10-20 | P. L. G. Research Limited | Plastic material mesh structure |
EP0075306A1 (en) * | 1981-09-23 | 1983-03-30 | Moplefan S.p.A. | Process for the netlike opening of fibrilled films |
Also Published As
Publication number | Publication date |
---|---|
IT941813B (en) | 1973-03-10 |
FR2115462A1 (en) | 1972-07-07 |
AU459808B2 (en) | 1975-04-10 |
CA1002273A (en) | 1976-12-28 |
IT953129B (en) | 1973-08-10 |
ZA717951B (en) | 1973-07-25 |
DE2157918A1 (en) | 1972-05-31 |
AU3616171A (en) | 1973-05-31 |
FR2115462B1 (en) | 1976-06-04 |
GB1378749A (en) | 1974-12-27 |
NL7116251A (en) | 1972-06-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |