UST102302I4 - Method for the production of apertures in polystyrene foam sheet - Google Patents
Method for the production of apertures in polystyrene foam sheet Download PDFInfo
- Publication number
- UST102302I4 UST102302I4 US06/298,709 US29870981A UST102302I4 US T102302 I4 UST102302 I4 US T102302I4 US 29870981 A US29870981 A US 29870981A US T102302 I4 UST102302 I4 US T102302I4
- Authority
- US
- United States
- Prior art keywords
- foam
- apertures
- slits
- polystyrene foam
- production
- 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
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
-
- 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
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/737—Articles provided with holes, e.g. grids, sieves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
A method and apparatus for producing apertures such as ventilation holes and the like in a preformed sheet of polystyrene foam which comprises forming slits which extend completely through the foam structure, the slits being arranged in a predetermined pattern, and passing the preslit foam through a heating zone such as a preheat oven used in plastic thermoforming operations. The resultant heated sheet of foam, as it emerges from the oven, is characterized by having a plurality of openings or apertures in locations corresponding to the slits which were made in the foam prior to preheating. The aperture containing sheets may be subsequently subjected to a thermoforming operation whereby thermoformed objects such as produce containers are produced having ventilation openings, i.e. apertures, located in a predetermined disposition around the thermoformed tray structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/298,709 UST102302I4 (en) | 1975-11-20 | 1981-09-02 | Method for the production of apertures in polystyrene foam sheet |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63377775A | 1975-11-20 | 1975-11-20 | |
US82912677A | 1977-08-30 | 1977-08-30 | |
US95154778A | 1978-10-16 | 1978-10-16 | |
US8878879A | 1979-10-29 | 1979-10-29 | |
US06/298,709 UST102302I4 (en) | 1975-11-20 | 1981-09-02 | Method for the production of apertures in polystyrene foam sheet |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US8878879A Continuation | 1975-11-20 | 1979-10-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
UST102302I4 true UST102302I4 (en) | 1982-10-05 |
Family
ID=27536524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/298,709 Pending UST102302I4 (en) | 1975-11-20 | 1981-09-02 | Method for the production of apertures in polystyrene foam sheet |
Country Status (1)
Country | Link |
---|---|
US (1) | UST102302I4 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5346664A (en) * | 1992-05-11 | 1994-09-13 | Harry Lenson | Apparatus and method for forming a ribbon of continuously connected dish-shaped sequins |
WO2003028965A1 (en) * | 2001-09-28 | 2003-04-10 | Sealed Air Limited | A thermo-formed container and a method and apparatus for producing the same |
US20100330330A1 (en) * | 2009-06-26 | 2010-12-30 | Nicholas De Luca | Expandable foam sheet that locks in expanded configuration |
US20110056886A1 (en) * | 2009-06-26 | 2011-03-10 | Nicholas De Luca | Oil spill recovery process |
-
1981
- 1981-09-02 US US06/298,709 patent/UST102302I4/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5346664A (en) * | 1992-05-11 | 1994-09-13 | Harry Lenson | Apparatus and method for forming a ribbon of continuously connected dish-shaped sequins |
WO2003028965A1 (en) * | 2001-09-28 | 2003-04-10 | Sealed Air Limited | A thermo-formed container and a method and apparatus for producing the same |
US20100330330A1 (en) * | 2009-06-26 | 2010-12-30 | Nicholas De Luca | Expandable foam sheet that locks in expanded configuration |
US20110056886A1 (en) * | 2009-06-26 | 2011-03-10 | Nicholas De Luca | Oil spill recovery process |
US8486507B2 (en) | 2009-06-26 | 2013-07-16 | Cryovac, Inc. | Expandable foam sheet that locks in expanded configuration |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DEFENSIVE PUBLICATION OR SIR FILE |