JPS5672917A - Thermal molding method for transfer of drag line inside - Google Patents
Thermal molding method for transfer of drag line insideInfo
- Publication number
- JPS5672917A JPS5672917A JP15021079A JP15021079A JPS5672917A JP S5672917 A JPS5672917 A JP S5672917A JP 15021079 A JP15021079 A JP 15021079A JP 15021079 A JP15021079 A JP 15021079A JP S5672917 A JPS5672917 A JP S5672917A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- die
- drag line
- concave
- concave part
- 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.)
- Pending
Links
- 238000000465 moulding Methods 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
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
- B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
-
- 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
- B29C51/10—Forming by pressure difference, e.g. vacuum
Abstract
PURPOSE: To finish the surface of a molded sheet article to be smooth by transferring the drag line formed on the outside surface of the preliminarily formed sheet to the inside surface of the molded sheet article.
CONSTITUTION: A female die 1 provided with a concave molding die 2 containing a concave part 2a with a deep narrow cross section is opposed to the a preliminary molding plug 6 whereby a convex surface containing a projection 7a fitting in the female die 1 and corresponding to the concave part 2a is made fit in and approach the concave part 2. The resin sheet softened by heat is formed preliminarily on the surface of the convex die 7 of the molding plug 6 by vacuum suction and fitted in the female die 1, and the pressure air is sent from the inside of the molding plug 6 into the inside of the preliminarily formed sheet 13a, thereby the sheet 13a is pressed down on the surface of the concave die 2 and thus the drag line 15a formed on the upper end of the projection 7a is transferred fitly on the inside surface of the sheet 13a. By this method, the surface of the molded sheet article can be finished to be smooth.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15021079A JPS5672917A (en) | 1979-11-20 | 1979-11-20 | Thermal molding method for transfer of drag line inside |
DE3010507A DE3010507C2 (en) | 1979-11-20 | 1980-03-19 | Method for producing a shaped body, in particular a bathtub, with deep-drawn areas |
FR8006461A FR2469995A1 (en) | 1979-11-20 | 1980-03-24 | Vacuum-formed baths without visible thicker lines - where lines transfer to invisible face when pressurising preform in female tool |
IT20878/80A IT1131047B (en) | 1979-11-20 | 1980-03-24 | METHOD AND EQUIPMENT TO ELIMINATE THE RESISTANCE OR TRACTION LINE IN THERMOFORMING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15021079A JPS5672917A (en) | 1979-11-20 | 1979-11-20 | Thermal molding method for transfer of drag line inside |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5672917A true JPS5672917A (en) | 1981-06-17 |
Family
ID=15491931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15021079A Pending JPS5672917A (en) | 1979-11-20 | 1979-11-20 | Thermal molding method for transfer of drag line inside |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5672917A (en) |
DE (1) | DE3010507C2 (en) |
FR (1) | FR2469995A1 (en) |
IT (1) | IT1131047B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1222138B (en) * | 1987-07-27 | 1990-09-05 | Eurodomestici Ind Riunite | METHOD FOR PRODUCTION OF CABINETS, AND REFRIGERATOR CABINETS IN PARTICULAR, AND CABINET OBTAINED WITH THE METHOD |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3219307A (en) * | 1961-09-20 | 1965-11-23 | Leeds Sweete Products Inc | Multi-part mold |
FR1589149A (en) * | 1968-09-13 | 1970-03-23 | ||
US3854860A (en) * | 1971-01-04 | 1974-12-17 | Kent Plastics Corp | Apparatus for forming plastic articles from sheet materials |
-
1979
- 1979-11-20 JP JP15021079A patent/JPS5672917A/en active Pending
-
1980
- 1980-03-19 DE DE3010507A patent/DE3010507C2/en not_active Expired
- 1980-03-24 FR FR8006461A patent/FR2469995A1/en active Granted
- 1980-03-24 IT IT20878/80A patent/IT1131047B/en active
Also Published As
Publication number | Publication date |
---|---|
DE3010507A1 (en) | 1981-05-21 |
IT8020878A0 (en) | 1980-03-24 |
DE3010507C2 (en) | 1982-10-14 |
IT1131047B (en) | 1986-06-18 |
FR2469995B3 (en) | 1982-11-05 |
FR2469995A1 (en) | 1981-05-29 |
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