CA1066959A - Treating a gelatin capsule containing an anhydrous paste of stain removing material with a solution of plastic - Google Patents
Treating a gelatin capsule containing an anhydrous paste of stain removing material with a solution of plasticInfo
- Publication number
- CA1066959A CA1066959A CA262,853A CA262853A CA1066959A CA 1066959 A CA1066959 A CA 1066959A CA 262853 A CA262853 A CA 262853A CA 1066959 A CA1066959 A CA 1066959A
- Authority
- CA
- Canada
- Prior art keywords
- capsules
- stain
- solution
- water
- accordance
- 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
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Detergent Compositions (AREA)
- Medicinal Preparation (AREA)
- Cleaning In General (AREA)
Abstract
A B S T R A C T
The specification describes a method for packaging a stain-removing material paste form in capsules making use of gelatine as a material for the capsules which can be deformed under the action of pressure and an essentially anhydrous composition of the stain-removing material in paste form with substantial exclusion of low molecular weight alcohols. The capsule material is treated with a plastics, which is not soluble in water, in a solvent, on the outside.
The specification describes a method for packaging a stain-removing material paste form in capsules making use of gelatine as a material for the capsules which can be deformed under the action of pressure and an essentially anhydrous composition of the stain-removing material in paste form with substantial exclusion of low molecular weight alcohols. The capsule material is treated with a plastics, which is not soluble in water, in a solvent, on the outside.
Description
- 106~959 .
Stain-removing materials in paste form have become -more and mGre accepted at the expense of liquid stain-removing materials because such materials in paste form guarantee re val of stains or spots from articles without leaving any visible mark around the cleaned area of the article.
Stain-removing materials in paste form are filled into tubes and removed from them portion-by-portion. In this respect care must be taken to see that after each removal the tube is completely sealed again as otherwise liquid solvent com-pr~sed in the stain-removing material will evaporate so that the paste dries out. However, stain-removing pastes packed in tubes dry out even if care is taken in this respect, because on rolling up the tube as it is emptied portion-by-portion it is impossible to prevent the production of hair cracks in the tube casing and the solvent evaporates through such ha~r cracks.
For removing a stain-removing paste portion from a supply container without the danger of evaporation of the solvent, the stain-removing paste may be filled in*o an aerosol container. Aerosol containers are, however, not generally popular because the propellants contained in them exert a substantial pressure and it is necessary to avoid raised temperatures at all costs and furthermore precise instructions as regards keeping a specific distance between the aerosol con-tainer and the article of clothing to be cleaned on spraying on for example must be rigorously adhered to.
The problem of dispensing small portions of a stain-removing material in a liquid form appears to have been solved already. Liquid stain-removing material can be placed in glass ampoules representing specific portions, the glass being , *1-B ~
, . . . ~ ... . . ~ .... . . .
` 1066959 surrounded by a plasticæ casing, which at one end carries a wick The glass ampoule is broken within the plastics casing so that the content can soak into the wick and from the latter it can be applied to the stains to be removed.
However, the plastics casing is not always quite reliable so that there is a danger of small splinters of glass emerging which could lead to injury.
In our Canadian Patent No. 1,040,151, dated October 10, 1978, there is described and claimed a package containing a plurality of pressure-deformable capsules each holding a stain-re ving agent in paste form, said capsules being held in at least one trough in a receiving member by a covering foil secured to the receiving member and extending over the trough or troughs.
Preferably, as a material for the capsules, use is made of a plastics material which can easily be deformed.
- The capsules are preferably shaped like bottles. At the bottle neck it is advantageous to provide a zone of weakness which makes it possible to twist off the bottle neck or to separate it in some other manner.
Plastics foils as available for the production of cap-sules are generally not ~uitable for the packaging of stain-removing pastes, for the latter must comprise solvents for the stains to be removed which usually contain grease. If the stain-removing material is to be of universal applicaiion, use is made of hydrocarbons or chlorinated hydrocarbons as sol-vents, which constitute up to 64% of the paste. These sol-vents however attack plastics which are available for the pro-duction of capsules since they cause swelling and diffuse.
While it is true that plastics are available which can
Stain-removing materials in paste form have become -more and mGre accepted at the expense of liquid stain-removing materials because such materials in paste form guarantee re val of stains or spots from articles without leaving any visible mark around the cleaned area of the article.
Stain-removing materials in paste form are filled into tubes and removed from them portion-by-portion. In this respect care must be taken to see that after each removal the tube is completely sealed again as otherwise liquid solvent com-pr~sed in the stain-removing material will evaporate so that the paste dries out. However, stain-removing pastes packed in tubes dry out even if care is taken in this respect, because on rolling up the tube as it is emptied portion-by-portion it is impossible to prevent the production of hair cracks in the tube casing and the solvent evaporates through such ha~r cracks.
For removing a stain-removing paste portion from a supply container without the danger of evaporation of the solvent, the stain-removing paste may be filled in*o an aerosol container. Aerosol containers are, however, not generally popular because the propellants contained in them exert a substantial pressure and it is necessary to avoid raised temperatures at all costs and furthermore precise instructions as regards keeping a specific distance between the aerosol con-tainer and the article of clothing to be cleaned on spraying on for example must be rigorously adhered to.
The problem of dispensing small portions of a stain-removing material in a liquid form appears to have been solved already. Liquid stain-removing material can be placed in glass ampoules representing specific portions, the glass being , *1-B ~
, . . . ~ ... . . ~ .... . . .
` 1066959 surrounded by a plasticæ casing, which at one end carries a wick The glass ampoule is broken within the plastics casing so that the content can soak into the wick and from the latter it can be applied to the stains to be removed.
However, the plastics casing is not always quite reliable so that there is a danger of small splinters of glass emerging which could lead to injury.
In our Canadian Patent No. 1,040,151, dated October 10, 1978, there is described and claimed a package containing a plurality of pressure-deformable capsules each holding a stain-re ving agent in paste form, said capsules being held in at least one trough in a receiving member by a covering foil secured to the receiving member and extending over the trough or troughs.
Preferably, as a material for the capsules, use is made of a plastics material which can easily be deformed.
- The capsules are preferably shaped like bottles. At the bottle neck it is advantageous to provide a zone of weakness which makes it possible to twist off the bottle neck or to separate it in some other manner.
Plastics foils as available for the production of cap-sules are generally not ~uitable for the packaging of stain-removing pastes, for the latter must comprise solvents for the stains to be removed which usually contain grease. If the stain-removing material is to be of universal applicaiion, use is made of hydrocarbons or chlorinated hydrocarbons as sol-vents, which constitute up to 64% of the paste. These sol-vents however attack plastics which are available for the pro-duction of capsules since they cause swelling and diffuse.
While it is true that plastics are available which can
-2-B
.: .
1~669Sg withstand the attack of such hydrocarbons or chlorinated hydrocarbons, such plastics are much too expensive in pro-duction and further processing is required for them to be employed for a mass produ oed product as for example stain~
removing capsules.
Gelatine is already well known as a capsule material for packaging chemical products, more particularly pharmaceutical products and medicaments. However, gelatine itself is not generally suitable for capsule packaging of staîn-rem~ving pastes. Since stain-removing pastes comprise low molecular weight alcohols (by which we mean alcohols containing up to five carbon atoms), gelatine is dissolved by ~uch pastes and in any ca3e such alcohols can escape by diffusion through the gelatine capsule so thatthe composition of the stain-removing paste is modified in an undesired manner.
Naturally stain-removing materials have been proposed which do not comprise any alcohols but, however, the field of use of such stain-removing materials is so extraordinarily limited that they have only found restricted use in practice.
In our British Patent Specification No. 1,508,297 there is described and claimed a pressure-deformable cap~ule con-taining a stain-removing agent in paste form, which is characterised in that the material of the capsule is gelatine and in that the composition of the stain-removing agent i8 substantially water-free and is substantially free of alcohols containing up to five carbon atoms.
For attaining the aim forming the basis of British Specification No. 1,508,297, it was necessary to make a selec-tion of the capsule material on the one hand and the composition of the stain-removing material on the other hand in such a .''
.: .
1~669Sg withstand the attack of such hydrocarbons or chlorinated hydrocarbons, such plastics are much too expensive in pro-duction and further processing is required for them to be employed for a mass produ oed product as for example stain~
removing capsules.
Gelatine is already well known as a capsule material for packaging chemical products, more particularly pharmaceutical products and medicaments. However, gelatine itself is not generally suitable for capsule packaging of staîn-rem~ving pastes. Since stain-removing pastes comprise low molecular weight alcohols (by which we mean alcohols containing up to five carbon atoms), gelatine is dissolved by ~uch pastes and in any ca3e such alcohols can escape by diffusion through the gelatine capsule so thatthe composition of the stain-removing paste is modified in an undesired manner.
Naturally stain-removing materials have been proposed which do not comprise any alcohols but, however, the field of use of such stain-removing materials is so extraordinarily limited that they have only found restricted use in practice.
In our British Patent Specification No. 1,508,297 there is described and claimed a pressure-deformable cap~ule con-taining a stain-removing agent in paste form, which is characterised in that the material of the capsule is gelatine and in that the composition of the stain-removing agent i8 substantially water-free and is substantially free of alcohols containing up to five carbon atoms.
For attaining the aim forming the basis of British Specification No. 1,508,297, it was necessary to make a selec-tion of the capsule material on the one hand and the composition of the stain-removing material on the other hand in such a .''
-3-' ,B , ' ' . . :
`- 1066959 manner that the capsule material was not attacked by the stain-removing material or its components respectively and so that, furthermore, components of the stain-removing material could not diffuse through the capsule material.
- It is only on fulfilling these requirements that it is possible to ensure the efficacy of the stain-removing paste even if it is packed in capsules which can be deformed by the action of pressure.
Preferably the composition of the stain-removing paste is selected as follows when gelati~e is used as the capsule material:
Cyclohexanol5 % to 7 %
isopropanol 0 % to 3 %
toluene 15 ~ to 25 %
1,2-dichloroethane 0 % to 20 %
1,1,l-trichloroethane 40 % to 65 %
perfume 0 % to 0.5 %
pulverulent solids 6 % to 10 %
The solids have a particle side between 5 millimicrons 20 and 150 microns.
The problem forming the basis of the present invention is related to construct$ng the capsules with the use of gela-tine as a capsule material in such a manner that the capsules can be stored as they are, that is to say without enclosing them in outer packaging means adapted to prevent the capsule~
from expanding even in humid air or at raised temperatures.
This requirement arises in our latitudes for example when such capsules are packed in the glove locker of a motor vehicle which is then parked in the sun.
Owing to the effect of high atmospheric humidity and/or r"
,~
106~59 high temperatures the capsules become softened to such an extent that it is no longer possible to ensure proper squeez-ing out of the stain-removing material from the capsule and instead of the intended re val of stains and spots the result of the use of such a capsule may only be further soil~
ing of the article to be cleaned.
In accordance with the present invention, a method of packaging a stain-removing material in paste form in capsules for use in portions making use of gelatine as the encapsu-lating material which can be deformed under the action of pressure, wherein the stain-removing material comprises an essentially anhydrous composition of the stain-removing mat-erial wi~h substantial exclusion of low molecular weight alcohols, as ~rei~before defined, is characterised in that the encapsulating material is treated with a solution of a water-insoluble plastics material on the side which lies to the outside of the finished capsules to form, after removal of the solvent, a coating thereupon. `
The application of the coating remaining on the capsule material after evaporation of the solvent and which endows the capsules with a high resistance to humidity and/or temper-ature effects, can be carried out in a number of different ways.
Thus, for example, the gelatine capsules filled with the stain-removing material, or gelatine strips or sheets to be processed to produce the gelatine capsules (in this case preferably only on the side which lies to the outside of the finished capsules) can be sprayed with a solution of the water-insoluble plastics material in a chlorinated hydrocarbon.
The hydrocarbon evaporates and the water-insoluble plastics coating remains on the capsule material as required.
n ~ 1;~ , , , , ' ' It is, however, also possible to apply a solution of the water-insoluble plastics material in a chlorinated hydrocarbon tothe finished f~ed capsules in a dragee-making pan and in this respect it is possible to spray the capsules with the solution and by regulation of the temperature and/or of the supply and removal of air the evaporation of the chlorin-ated hydrocarbon can be so regulated that an even application of the water-insoluble plastics material on the water-soluble gelatine capsules is guaranteed.
As the water-insoluble plastics material it is possible ; to use polyvinyl chloride, polystyrene and/or a polycarbonate,which can be dissolved individually or mixed with each other in one or re chlorinated hydrocarbons as for example chloroform, carbon tetrachloride or methylene chloride.
In this respect it is advantageous to use from 10 to 30 parts by weight of the plastics material or materials per 100 parts by weight of finished solution.
In the case of treatment in a dragee-making pan care should be taken to see that the temper~re of 40C is not exceeded. Preferably the operation is carried out at room temperature.
Although a previous proposal has already been made to coat gelatine capsules with acrylic synthetic resins, in this respect it was a question of gelatine capsules which were filled with medicaments and the problem to be solved was that of making the capsules resistant to the stomach so that the content of the capsule only became effective in part of the digestive tract following the stomach. The problem of the present invention, that is to say making gelatine capsules filled with stain-removing materials more resistant to heat and humidity, does not arise in that case however.
D
.~ .
`- 1066959 manner that the capsule material was not attacked by the stain-removing material or its components respectively and so that, furthermore, components of the stain-removing material could not diffuse through the capsule material.
- It is only on fulfilling these requirements that it is possible to ensure the efficacy of the stain-removing paste even if it is packed in capsules which can be deformed by the action of pressure.
Preferably the composition of the stain-removing paste is selected as follows when gelati~e is used as the capsule material:
Cyclohexanol5 % to 7 %
isopropanol 0 % to 3 %
toluene 15 ~ to 25 %
1,2-dichloroethane 0 % to 20 %
1,1,l-trichloroethane 40 % to 65 %
perfume 0 % to 0.5 %
pulverulent solids 6 % to 10 %
The solids have a particle side between 5 millimicrons 20 and 150 microns.
The problem forming the basis of the present invention is related to construct$ng the capsules with the use of gela-tine as a capsule material in such a manner that the capsules can be stored as they are, that is to say without enclosing them in outer packaging means adapted to prevent the capsule~
from expanding even in humid air or at raised temperatures.
This requirement arises in our latitudes for example when such capsules are packed in the glove locker of a motor vehicle which is then parked in the sun.
Owing to the effect of high atmospheric humidity and/or r"
,~
106~59 high temperatures the capsules become softened to such an extent that it is no longer possible to ensure proper squeez-ing out of the stain-removing material from the capsule and instead of the intended re val of stains and spots the result of the use of such a capsule may only be further soil~
ing of the article to be cleaned.
In accordance with the present invention, a method of packaging a stain-removing material in paste form in capsules for use in portions making use of gelatine as the encapsu-lating material which can be deformed under the action of pressure, wherein the stain-removing material comprises an essentially anhydrous composition of the stain-removing mat-erial wi~h substantial exclusion of low molecular weight alcohols, as ~rei~before defined, is characterised in that the encapsulating material is treated with a solution of a water-insoluble plastics material on the side which lies to the outside of the finished capsules to form, after removal of the solvent, a coating thereupon. `
The application of the coating remaining on the capsule material after evaporation of the solvent and which endows the capsules with a high resistance to humidity and/or temper-ature effects, can be carried out in a number of different ways.
Thus, for example, the gelatine capsules filled with the stain-removing material, or gelatine strips or sheets to be processed to produce the gelatine capsules (in this case preferably only on the side which lies to the outside of the finished capsules) can be sprayed with a solution of the water-insoluble plastics material in a chlorinated hydrocarbon.
The hydrocarbon evaporates and the water-insoluble plastics coating remains on the capsule material as required.
n ~ 1;~ , , , , ' ' It is, however, also possible to apply a solution of the water-insoluble plastics material in a chlorinated hydrocarbon tothe finished f~ed capsules in a dragee-making pan and in this respect it is possible to spray the capsules with the solution and by regulation of the temperature and/or of the supply and removal of air the evaporation of the chlorin-ated hydrocarbon can be so regulated that an even application of the water-insoluble plastics material on the water-soluble gelatine capsules is guaranteed.
As the water-insoluble plastics material it is possible ; to use polyvinyl chloride, polystyrene and/or a polycarbonate,which can be dissolved individually or mixed with each other in one or re chlorinated hydrocarbons as for example chloroform, carbon tetrachloride or methylene chloride.
In this respect it is advantageous to use from 10 to 30 parts by weight of the plastics material or materials per 100 parts by weight of finished solution.
In the case of treatment in a dragee-making pan care should be taken to see that the temper~re of 40C is not exceeded. Preferably the operation is carried out at room temperature.
Although a previous proposal has already been made to coat gelatine capsules with acrylic synthetic resins, in this respect it was a question of gelatine capsules which were filled with medicaments and the problem to be solved was that of making the capsules resistant to the stomach so that the content of the capsule only became effective in part of the digestive tract following the stomach. The problem of the present invention, that is to say making gelatine capsules filled with stain-removing materials more resistant to heat and humidity, does not arise in that case however.
D
.~ .
Claims (7)
1. A method for packaging a stain-removing material in paste form in capsules for use in portions making use of gela-tine as the encapsulating material which can be deformed under the action of pressure wherein the stain-removing material com-prises an essentially anhydrous composition of the stain-removing material with substantial exclusion of low molecular weight alcohols, characterised in that the encapsulating material is treated with a solution of a water-insoluble plastics material on the side which lies to the outside of the finished capsules to form, after removal of the solvent, a coating thereupon.
2. A method in accordance with Claim 1, in which the solvent is a chlorinated hydrocarbon.
3. A method in accordance with Claim 1, in which the capsules filled with the stain-removing material are sprayed with a solution of the water-insoluble plastics material in a chlorinated hydrocarbon.
4. A method in accordance with Claim 3, in which the capsules are placed in a dragee-making pan and have the solu-tion of water-insoluble plastics material in a chlorinated hydrocarbon applied to them in said pan with regulation of the te mperature and/or air supply and removal.
5. A method in accordance with Claim 4, in which the solution of water-insoluble plastics material in a chlorinated hydrocarbon is sprayed onto the capsules.
6. A method in accordance with Claim 1, in which gelatine strips are treated on one side with a solution of water-insoluble plastics material in a chlorinated hydrocarbon and the capsules are so made from these strips that the treated surface lies outside.
7. A method in accordance with Claim 1, 2 or 3, in which there is used as said solution of water-insoluble plastics material from 10 to 30 parts by weight of polyvinyl chloride, polystyrene and/or a polycarbonate per 100 parts by weight of the solution, the solvent being chloroform, carbon tetrachloride and/or methylene.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2551061A DE2551061C3 (en) | 1975-11-13 | 1975-11-13 | Gelatine portion capsule for a paste-like stain remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1066959A true CA1066959A (en) | 1979-11-27 |
Family
ID=5961691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA262,853A Expired CA1066959A (en) | 1975-11-13 | 1976-10-06 | Treating a gelatin capsule containing an anhydrous paste of stain removing material with a solution of plastic |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5268214A (en) |
| AT (1) | AT353744B (en) |
| BE (1) | BE847977A (en) |
| CA (1) | CA1066959A (en) |
| CH (1) | CH603404A5 (en) |
| ES (1) | ES452789A1 (en) |
| FR (1) | FR2331482A1 (en) |
| GB (1) | GB1557976A (en) |
| NL (1) | NL177761C (en) |
-
1976
- 1976-09-16 AT AT689376A patent/AT353744B/en not_active IP Right Cessation
- 1976-09-28 CH CH1223276A patent/CH603404A5/xx not_active IP Right Cessation
- 1976-10-06 CA CA262,853A patent/CA1066959A/en not_active Expired
- 1976-10-28 ES ES452789A patent/ES452789A1/en not_active Expired
- 1976-11-03 FR FR7633081A patent/FR2331482A1/en active Granted
- 1976-11-04 BE BE172072A patent/BE847977A/en not_active IP Right Cessation
- 1976-11-09 NL NL7612441A patent/NL177761C/en not_active IP Right Cessation
- 1976-11-12 JP JP51136810A patent/JPS5268214A/en active Pending
- 1976-11-12 GB GB4716176A patent/GB1557976A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7612441A (en) | 1977-05-17 |
| JPS5268214A (en) | 1977-06-06 |
| FR2331482B1 (en) | 1981-02-27 |
| ES452789A1 (en) | 1977-10-01 |
| NL177761C (en) | 1985-11-18 |
| BE847977A (en) | 1977-03-01 |
| ATA689376A (en) | 1979-05-15 |
| GB1557976A (en) | 1979-12-19 |
| NL177761B (en) | 1985-06-17 |
| FR2331482A1 (en) | 1977-06-10 |
| AT353744B (en) | 1979-11-26 |
| CH603404A5 (en) | 1978-08-15 |
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