GB2112698A - Perforating by laser beam - Google Patents
Perforating by laser beam Download PDFInfo
- Publication number
- GB2112698A GB2112698A GB08234428A GB8234428A GB2112698A GB 2112698 A GB2112698 A GB 2112698A GB 08234428 A GB08234428 A GB 08234428A GB 8234428 A GB8234428 A GB 8234428A GB 2112698 A GB2112698 A GB 2112698A
- Authority
- GB
- United Kingdom
- Prior art keywords
- perforations
- cheese
- vat
- wall
- making
- 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.)
- Withdrawn
Links
- 235000013351 cheese Nutrition 0.000 claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 19
- 229920003023 plastic Polymers 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 15
- 239000005862 Whey Substances 0.000 claims abstract description 11
- 102000007544 Whey Proteins Human genes 0.000 claims abstract description 11
- 108010046377 Whey Proteins Proteins 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 14
- 241000283690 Bos taurus Species 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 230000003670 easy-to-clean Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000005070 ripening Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01J—MANUFACTURE OF DAIRY PRODUCTS
- A01J25/00—Cheese-making
- A01J25/11—Separating whey from curds; Washing the curds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01J—MANUFACTURE OF DAIRY PRODUCTS
- A01J25/00—Cheese-making
- A01J25/11—Separating whey from curds; Washing the curds
- A01J25/117—Filter design
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01J—MANUFACTURE OF DAIRY PRODUCTS
- A01J25/00—Cheese-making
- A01J25/12—Forming the cheese
- A01J25/13—Moulds therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/30—Organic material
- B23K2103/42—Plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Animal Husbandry (AREA)
- Environmental Sciences (AREA)
- Laser Beam Processing (AREA)
- Dairy Products (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Abstract
A method of making a cheese vat from a synthetic plastics material and having a perforated wall through which whey can penetrate includes producing the perforations in said wall by means of a laser beam. The perforations may be cylindrical or holes of varying diameter.
Description
SPECIFICATION
A cheese vat made of synthetic plastics material
This invention relates to a cheese-vat made of synthetic plastics material and having a whey-permeating perforated wall.
In the production of cheese with a rind, the separation of whey from the curd forms a part of the cheese making process that is usually effected by distributing the curd batch in cheese-vats, which may be made of synthetic plastics material, and the walls of which are provided with perforations. The separated whey flows away through the perforations when subjected to a pressing opertion.
In the prior cheese-vats of synthetic plastics material, the perforations have been made in the whey permeating wall mechanically by drilling or punching, and they are mainly of cylindrical shape.
In some cases the perforations are arranged in groups of a limited number, for example, 6 - 20 x perforations, each group within a zone of limited area that is recessed from the outside.
Practice has shown that the holes must be finished with great care, because otherwise rind imperfections may develop during the ripening process. In addition, a less careful finish of the perforations, and the consequential presence of burrs are conductive to the perforations becoming clogged with cheese substance.
it is an object of the present invention to provide a method of making a cheese-vat that does not exhibit the above drawbacks, or in any case has them in a greatly reduced degree.
For this purpose, according to the invention, a method of making a cheese vat from a synthetic plastics material and having a perforated wall through which whey can penetrate includes producing the perforations by means of a laser beam.
In the plastics cheese-vat made by the method according to the present invention, the perforations produced by means of a laser beam turn out to have a virtually perfect smooth wall, as a result of which they can easily be cleaned.
Afurther important advantage is that the technique of making the perforations by means of laser beams renders it unnecessary to reduce the wall thickness in the areas where the perforations are made. As a consequence the whey-permeating wall of the vat may be made of substantially uniform thickness, at any rate in the entire area in which the perforations are made, whereby its manufacture is considerably simplified. In fact, owing to the smooth wall surface of perforations made by laser beams, these can easily be cleaned even if they are of longer length than those made in recessed, i.e. thinner, wall portions. A further advantage of the absence of recessed areas is that it promotes hygiene. Recessed areas need particular care in cleaning, in particular in the corners.
With a view to uniform drainage of the whey and, consequently, promoting the formation of a rind of substantially uniform quality throughout its surface, the cheese-vat according to the invention preferably
has perforations uniformly distributed over the wall.
The invention also includes a cheese vat made by the method set forth above.
In one method according to the invention the perforations are made in a simple manner by passing the material to be perforated under a laser head, whether or not with uniform increments, depending on the desired pattern of distribution.
The laser head may have a fixed position according to the perpendicular to the material surface to be perforated so that cylindrical holes are produced. It is also possible, however, to choose such a lens in the laser head that it may be angled in relation to the perpendicular to the material to be perforated, so that a hole of varying diameter is produced.
Thus the perforations are substantially frusto conical having inclined walls so that they are of larger cross-sectional area on the outer side of the vat than the inner side. This risk of clogging with cheese substance is therefore further reduced. This is a great advantage relative to the present constructions, in which the perforations are made by mechanical means. In that case, with a view to preventing burring, these perforations must always be made from the inside to the outside. In particular if the perforations are made by punching, whereby it is difficult to prevent variation in hole diameter, the effect of such variation in diameter is always such that the perforations become narrower from the inside to the outside. The perforations then function as a trap, and the risk of clogging with cheese substance is thus promoted.
The use of a cheese-vat according to the invention is productive of a cheese or curd which, owing to the quality of the perforations made by means of a laser beam, has a highly constant rind quality. The vat itself is easy to clean, and also permits ready release of the pressed curd without damaging the same.
1. A method of making a cheese vat from a synthetic plastics material and having a perforated wall through which they can penetrate which includes producing the perforations in said wall by means of a laser beam.
2. A method of making a cheese vat as claimed in claim 1 which includes forming said perforations with inclined walls so that they are of larger cross-sectional area on the outer side of the vat than the inner side.
3. A method of making a cheese vat as claimed in claim 2 which includes forming said perforations so that they are substantially frusto conical.
4. A method of making a cheese vat as claimed in claims 1-3 in which the wall in which the perforations are formed is of substantially uniform thickness in the area of the perforations.
5. A method of making a cheese vat as claimed in claims 1-4 which includes distributing the perforations uniformly over the wall.
6. A method of making a cheese vat substantially as described herein.
7. A cheese vat made according to the method set forth in any one of the preceding claims.
8. A cheese vat substantially as described herein.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (8)
1. A method of making a cheese vat from a synthetic plastics material and having a perforated wall through which they can penetrate which includes producing the perforations in said wall by means of a laser beam.
2. A method of making a cheese vat as claimed in claim 1 which includes forming said perforations with inclined walls so that they are of larger cross-sectional area on the outer side of the vat than the inner side.
3. A method of making a cheese vat as claimed in claim 2 which includes forming said perforations so that they are substantially frusto conical.
4. A method of making a cheese vat as claimed in claims 1-3 in which the wall in which the perforations are formed is of substantially uniform thickness in the area of the perforations.
5. A method of making a cheese vat as claimed in claims 1-4 which includes distributing the perforations uniformly over the wall.
6. A method of making a cheese vat substantially as described herein.
7. A cheese vat made according to the method set forth in any one of the preceding claims.
8. A cheese vat substantially as described herein.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8105483A NL8105483A (en) | 1981-12-04 | 1981-12-04 | WHEEL DRAINER. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2112698A true GB2112698A (en) | 1983-07-27 |
Family
ID=19838494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08234428A Withdrawn GB2112698A (en) | 1981-12-04 | 1982-12-02 | Perforating by laser beam |
Country Status (6)
| Country | Link |
|---|---|
| DE (1) | DE3244357A1 (en) |
| DK (1) | DK536782A (en) |
| FR (1) | FR2517512A1 (en) |
| GB (1) | GB2112698A (en) |
| IT (1) | IT8224589A0 (en) |
| NL (1) | NL8105483A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU685499B2 (en) * | 1994-10-21 | 1998-01-22 | Tetra Laval Holdings & Finance Sa | Drainage pipe with perforations for draining whey from a whey/curd mass, device provided with at least one such pipe,and method for manufacturing such pipes |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL9300664A (en) * | 1993-04-20 | 1994-11-16 | Stork Hubert Cheese Systems | Drainage tube with perforations for draining whey from a whey / curd mass, device provided with at least one such tube and method for manufacturing such tubes. |
| EP0972441A3 (en) * | 1994-10-19 | 2000-05-24 | Tetra Laval Holdings & Finance S.A. | Drainage pipe with perforations for draining whey from a whey/curd mass, and device provided with at least one such pipe |
| EP0707788A1 (en) * | 1994-10-19 | 1996-04-24 | Tebel-Mkt B.V. | Drainage pipe with perforations for draining whey from a whey/curd mass, device provided with at least one such pipe, and method for manufacturing such pipes |
| FR2756139B1 (en) * | 1996-11-25 | 1999-03-19 | Etude Realisation Et Vente A L | PROCESS FOR MANUFACTURING A PIECE WITH FINE PERFORATIONS, IN PARTICULAR A PERFORATED CHEESE MOLD |
-
1981
- 1981-12-04 NL NL8105483A patent/NL8105483A/en not_active Application Discontinuation
-
1982
- 1982-12-01 DE DE19823244357 patent/DE3244357A1/en not_active Withdrawn
- 1982-12-02 GB GB08234428A patent/GB2112698A/en not_active Withdrawn
- 1982-12-03 IT IT8224589A patent/IT8224589A0/en unknown
- 1982-12-03 FR FR8220604A patent/FR2517512A1/en not_active Withdrawn
- 1982-12-03 DK DK536782A patent/DK536782A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU685499B2 (en) * | 1994-10-21 | 1998-01-22 | Tetra Laval Holdings & Finance Sa | Drainage pipe with perforations for draining whey from a whey/curd mass, device provided with at least one such pipe,and method for manufacturing such pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8224589A0 (en) | 1982-12-03 |
| FR2517512A1 (en) | 1983-06-10 |
| DK536782A (en) | 1983-06-05 |
| DE3244357A1 (en) | 1983-06-09 |
| NL8105483A (en) | 1983-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |