GB800598A - Improvements in producing embossed thermoplastic film - Google Patents
Improvements in producing embossed thermoplastic filmInfo
- Publication number
- GB800598A GB800598A GB35494/55A GB3549455A GB800598A GB 800598 A GB800598 A GB 800598A GB 35494/55 A GB35494/55 A GB 35494/55A GB 3549455 A GB3549455 A GB 3549455A GB 800598 A GB800598 A GB 800598A
- Authority
- GB
- United Kingdom
- Prior art keywords
- embossing
- drum
- film
- sleeve
- belt
- 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
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/18—Thermoforming apparatus
- B29C51/20—Thermoforming apparatus having movable moulds or mould parts
- B29C51/22—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/18—Thermoforming apparatus
- B29C51/20—Thermoforming apparatus having movable moulds or mould parts
- B29C51/22—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis
- B29C51/225—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis mounted on a vacuum drum
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/06—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using vacuum drums
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
800,598. Embossing-machines. UNITED PLASTICS INDUSTRIES, Inc. Dec. 9, 1955 [Jan. 4, 1955], No. 35494/55. Classes 100(1) and 100(2) Apparatus for embossing thermoplastic film, wherein suction is applied to the interior of a drum having a porous embossing surface to emboss a softened thermoplastic film adapted to be passed around the drum through an extended arc, comprises means effective to prevent loss of embossing suction, along marginal portions of that portion of said film embossed by said drum, due to leakage of air into said drum through the porous material forming said embossing surface when juxtaposed to said marginal portions of said film. The film 20, Fig. 1, passes from a supply roll 21 through tensioning devices 22, 29, round heating drums 30, 32, 33, 34, having inlets and outlets for steam, hot oil or water, round an embossing drum 35, stripping roller 36, drums 38, 39 supplied with cold water, coolant removal means 40 comprising slotted tubes 108, 109 and a perforated suction roller 112, and to a take-up roll 41. During embossing, the film is cooled by sprays 42. The embossing drum 35, Figs. 1 and 2, comprises a hollow shaft 45 carrying annular spiders 48 and end-plates 47, on which is mounted an embossing sleeve 50 having aligned rows of perforations 51. The sleeve is sealed to the plates 47 by inflatable tubular members 53. The sleeve 50 is coated or covered with porous material 56 forming the embossing surface, the edges of which are protected from air entering them by impervious annular bands 57 of permanently tacky tape applied to the sleeve. Suction is applied to the shaft 45, which is provided with perforations 55, and so to the entire surface of the sleeve 50. Two endless support belts 60 are mounted to pass over a series of pulleys 72 and a weighted tensioning pulley 72a which are mounted on guide members adjustable by means of a handle towards or away from each other. Each belt 60, Figs. 1 and 6, passes round the drum 35 near one end thereof, and has stitched or otherwise secured thereto at 62 a sealing belt 61 of rubber or other flexible, impervious material, which seals off the edge of the film 20 and the part of the material 56 between the film and the band 57, thereby preventing air entering the drum. In another form, Fig. 9, a cooling belt 90 is pre-cooled by water from a roller 94 and cooled by a drum 91 supplied with water, then passing over the drum 35 along a length greater than the width of the film. At each side, the belt 90 has secured thereto a sealing belt similar to the belts 61. In another form, the sleeve 50 is provided with a greater concentration of perforations in zones at each end, underlying the spaces between the edges of the film and the bands 57, so as to give uniform embossing pressure. Feeding webs. A thermoplastic film 20, Fig. 1, is fed from a supply roll 21 to an embossing drum 35, and passes over a tensioning device 22 comprising two rods 23, the angular disposition of which controls the tension. The web then passes over an expander 25, which is a roller having a plurality of elongated slats 29 mounted circumferentially with adjacent slats displaceable longitudinally to a limited degree with respect to each other. The film is thereby expanded laterally to remove wrinkles. Specification 800,599 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US479696A US2905969A (en) | 1952-09-03 | 1955-01-04 | Apparatus and method for producing embossed thermoplastic film and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB800598A true GB800598A (en) | 1958-08-27 |
Family
ID=23905039
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35494/55A Expired GB800598A (en) | 1955-01-04 | 1955-12-09 | Improvements in producing embossed thermoplastic film |
GB21700/57A Expired GB800599A (en) | 1955-01-04 | 1955-12-09 | Improvements in producing embossed thermoplastic film |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21700/57A Expired GB800599A (en) | 1955-01-04 | 1955-12-09 | Improvements in producing embossed thermoplastic film |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH331309A (en) |
DE (1) | DE1264745B (en) |
GB (2) | GB800598A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111827041B (en) * | 2020-07-29 | 2021-12-31 | 重庆交通建设(集团)有限责任公司 | Smoke-inhibiting flame-retardant construction method of environment-friendly modified asphalt |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2429482A (en) * | 1939-04-06 | 1947-10-21 | Munters Carl Georg | Method and means for the production of foil material |
US2660757A (en) * | 1950-11-02 | 1953-12-01 | Leland H Smith | Method and apparatus for producing textured films |
-
1955
- 1955-12-09 GB GB35494/55A patent/GB800598A/en not_active Expired
- 1955-12-09 GB GB21700/57A patent/GB800599A/en not_active Expired
- 1955-12-22 DE DEU4893A patent/DE1264745B/en active Pending
-
1956
- 1956-12-21 CH CH331309D patent/CH331309A/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE1264745B (en) | 1968-03-28 |
GB800599A (en) | 1958-08-27 |
CH331309A (en) | 1958-07-15 |
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