JPS5698239A - Production of thermoplastic resin membrane with fine through-hole - Google Patents
Production of thermoplastic resin membrane with fine through-holeInfo
- Publication number
- JPS5698239A JPS5698239A JP28380A JP28380A JPS5698239A JP S5698239 A JPS5698239 A JP S5698239A JP 28380 A JP28380 A JP 28380A JP 28380 A JP28380 A JP 28380A JP S5698239 A JPS5698239 A JP S5698239A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- fine
- film
- membrane
- thermoplastic resin
- 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
- 239000012528 membrane Substances 0.000 title abstract 5
- 229920005992 thermoplastic resin Polymers 0.000 title abstract 3
- 229920005989 resin Polymers 0.000 abstract 5
- 239000011347 resin Substances 0.000 abstract 5
- 239000002245 particle Substances 0.000 abstract 2
- 239000004698 Polyethylene Substances 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000002274 desiccant Substances 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- -1 polyethylene Polymers 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- 238000004080 punching Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
- B29C70/66—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres the filler comprising hollow constituents, e.g. syntactic foam
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/56—After-treatment of articles, e.g. for altering the shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
- B29K2105/165—Hollow fillers, e.g. microballoons or expanded particles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE:Fine hollow balls with a larger diamether than the thickness of the resin membrane are dispersed in the membrane of a thermoplastic resin and they are pressed to crush the balls, thus forming fine through-holes in the membrane without punching. CONSTITUTION:Fine hollow balls made of alumina or phenelic resin, preferably of 10-800 micron particle sizes, 1-5 times the thickness of the resin membrane cited later, are added to a thermoplastic resin such as polyethylene, preferably in an amount of 0.1-10wt% and the composition is made into a film, e.g., by inflation, so that the both top and bottom ends of each particle are exposed to both surface of the film. Then, the resin film is pressed with a milling roll to crush the balls into many fine pieces, thus forming fine through-holes in the resin film. EFFECT:The resultant film has high air permeation but supresses the permeation of water, thus it is suitably used as a package for desiccants, food wrapping or in agricultural application.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28380A JPS5698239A (en) | 1980-01-08 | 1980-01-08 | Production of thermoplastic resin membrane with fine through-hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28380A JPS5698239A (en) | 1980-01-08 | 1980-01-08 | Production of thermoplastic resin membrane with fine through-hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5698239A true JPS5698239A (en) | 1981-08-07 |
Family
ID=11469573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28380A Pending JPS5698239A (en) | 1980-01-08 | 1980-01-08 | Production of thermoplastic resin membrane with fine through-hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5698239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1329299A1 (en) * | 2002-01-21 | 2003-07-23 | Coopbox Europe S.P.A. | Process for manufacturing meat trays |
-
1980
- 1980-01-08 JP JP28380A patent/JPS5698239A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1329299A1 (en) * | 2002-01-21 | 2003-07-23 | Coopbox Europe S.P.A. | Process for manufacturing meat trays |
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