GB2098916A - Process for the manufacture of rubber boots - Google Patents
Process for the manufacture of rubber boots Download PDFInfo
- Publication number
- GB2098916A GB2098916A GB82107736A GB8210736A GB2098916A GB 2098916 A GB2098916 A GB 2098916A GB 82107736 A GB82107736 A GB 82107736A GB 8210736 A GB8210736 A GB 8210736A GB 2098916 A GB2098916 A GB 2098916A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rubber
- boots
- felt
- boot
- lining
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 210000002683 foot Anatomy 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 8
- 210000003423 ankle Anatomy 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 claims description 2
- 229940084434 fungoid Drugs 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 208000017520 skin disease Diseases 0.000 claims description 2
- 238000005482 strain hardening Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/02—Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting
- B29D35/04—Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting having multilayered parts
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/02—Boots covering the lower leg
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/128—Moulds or 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
-
- 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
- B29K2021/00—Use of unspecified rubbers as moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
A process for making rubber boots includes placing a felt lining over an expandable internal form and vulcanising the rubber parts of the boot over this lining by the application of heat to external mould parts as well as pressure applied within the internal form. The form may be of rubber and the external mould parts may be electrically heated.
Description
SPECIFICATION
Process for the manufacture of rubber boots
The invention relates to a process for the manufacture of rubber boots.
It is generally known that the various customary rubber boots are waterproof, but they have a rather cold "feel" in the winter season and do not provided adequate heat insulation for the user's feet. Moreover, if worn for an extended length of tim'e, and/or regularly, the user's feet will perspire, leading to an increased risk of skin diseases and fungoid growth.
Various felt boots are also widely used which, although warm, are not waterproof.
The demand for solving the problem of hygienically protecting the feet under rainy, muddy and cold working conditions has existed for a long time.
The invention aims to provide rubber boots retaining and combining the favourable properties of known rubber boots and felt boots while completely eliminating or reducing their drawbacks.
The aim is sought to be achieved by a rubber boot manufacturing process wherein first a lining is pulled over the internal form (boot tree), then the rubber parts of the boot are vulcanised with heat, which process is improved according to the invention by using felt as the lining, while vulcanisation of the rubber parts is carried out by means of a pressure applied via a-pressing medium conducted into an external form which is rigid and into the internal form which is expandable.
According to a preferred characteristic of the invention, preferably air at pressure of 1 5-20 bar is used as pressing medium.
Thus, in contrast with the known rubber boots manufacturing process, in which the rubber parts (the toe-cap, heel, sole, front of boot and boot leg) are fixed to a lining pulled over a boot-tree with the aid of an adhesive, then the vulcanisation is carried out in a boiler with steam-heated hot air, the rubber parts according to the invention are vulcanised over a felt lining with the combined use of heat and pressure. In this way, satisfactory bonding or adherence of the felt and rubber, as well as a waterproof condition are accomplished.
The internal air pressure presses the nonvulcanised rubber into the loose texture of the felt material, and subsequently or simultaneously the rubber is vulcanised under the effect of heat.
The outer rigid shape may be decomposable, provided with electric heating by conventionally controlled temperature, and the internal form may be made, for instance, from rubber.
By using the process according to the invention felt-lined rubber boots are producible in which the quality is considerably better than in hitherto known boots, i.e. the fixing of the heel and sole is much more reliable. Furthermore, such footwear can be produced at low cost and of a pleasing appearance while assuring hygienic feet protection even under rainy, muddy and cold conditions.
The rubber cover above the ankle may be dispensed with, in which case the felt lining surrounds the leg above the ankle, whereby ventilation of the feet can be further improved.
1. A process for the manufacture of rubber boots in which a felt lining is pulled over an internal form then rubber boot parts are vulcanised in an outer rigid form with the aid of pressure applied via a pressing agent conducted into said internal form, which is expandable.
2. A process according to claim 1 , wherein air at a pressure of 1 5-20 bar is used as the said pressing agent.
3. A process according to claim 1, substantially as herein described.
4. Rubber boots whenever made by the process claimed in any preceding claim.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (4)
1. A process for the manufacture of rubber boots in which a felt lining is pulled over an internal form then rubber boot parts are vulcanised in an outer rigid form with the aid of pressure applied via a pressing agent conducted into said internal form, which is expandable.
2. A process according to claim 1 , wherein air at a pressure of 1 5-20 bar is used as the said pressing agent.
3. A process according to claim 1, substantially as herein described.
4. Rubber boots whenever made by the process claimed in any preceding claim.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU811433A HU181335B (en) | 1981-05-19 | 1981-05-19 | Method for producing rubber-boots |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2098916A true GB2098916A (en) | 1982-12-01 |
| GB2098916B GB2098916B (en) | 1985-06-12 |
Family
ID=10954493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB82107736A Expired GB2098916B (en) | 1981-05-19 | 1982-04-13 | Process for the manufacture of rubber boots |
Country Status (5)
| Country | Link |
|---|---|
| CS (1) | CS261210B2 (en) |
| FR (1) | FR2506213B1 (en) |
| GB (1) | GB2098916B (en) |
| HU (1) | HU181335B (en) |
| IT (1) | IT1150894B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2092961A1 (en) * | 1995-03-29 | 1996-12-01 | Gorraiz Juan Maria Redin | Prodn. of rubber shoe and boots at lower cost - comprises putting elastic, non-calendered fabric on outside of aluminium former in shape of boot, cutting elastic fabric and sowing to obtain tubular lining, etc. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB325100A (en) * | 1929-02-12 | 1930-02-13 | Alfred Adelbert Glidden | Process for manufacturing rubber boots |
| GB932216A (en) * | 1959-08-11 | 1963-07-24 | Giulio Mondello | Process for manufacturing footwear from curable materials |
| GB1063353A (en) * | 1963-03-16 | 1967-03-30 | Northern Rhodesia Tyre Service | Improvements relating to the manufacture of rubber footwear |
-
1981
- 1981-05-19 HU HU811433A patent/HU181335B/en not_active IP Right Cessation
-
1982
- 1982-04-13 GB GB82107736A patent/GB2098916B/en not_active Expired
- 1982-05-06 IT IT21119/82A patent/IT1150894B/en active
- 1982-05-14 FR FR8208463A patent/FR2506213B1/en not_active Expired
- 1982-05-19 CS CS823685A patent/CS261210B2/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2092961A1 (en) * | 1995-03-29 | 1996-12-01 | Gorraiz Juan Maria Redin | Prodn. of rubber shoe and boots at lower cost - comprises putting elastic, non-calendered fabric on outside of aluminium former in shape of boot, cutting elastic fabric and sowing to obtain tubular lining, etc. |
| FR2738121A1 (en) * | 1995-03-29 | 1997-03-07 | Redin Gorraiz Juan Maria | Prodn. of rubber shoe and boots at lower cost - comprises putting elastic, non-calendered fabric on outside of aluminium former in shape of boot, cutting elastic fabric and sowing to obtain tubular lining, etc. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2098916B (en) | 1985-06-12 |
| IT1150894B (en) | 1986-12-17 |
| FR2506213A1 (en) | 1982-11-26 |
| IT8221119A0 (en) | 1982-05-06 |
| HU181335B (en) | 1983-07-28 |
| CS261210B2 (en) | 1989-01-12 |
| FR2506213B1 (en) | 1985-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |