EP0214205A1 - Elastic tentering mat for a hide tentering apparatus - Google Patents
Elastic tentering mat for a hide tentering apparatusInfo
- Publication number
- EP0214205A1 EP0214205A1 EP86901403A EP86901403A EP0214205A1 EP 0214205 A1 EP0214205 A1 EP 0214205A1 EP 86901403 A EP86901403 A EP 86901403A EP 86901403 A EP86901403 A EP 86901403A EP 0214205 A1 EP0214205 A1 EP 0214205A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mat
- tentering
- hide
- elongation
- fibres
- 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- Withdrawn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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/26—Leather tensioning or stretching frames; Stretching-machines; Setting-out boards; Pasting boards
Definitions
- Elastic tentering mat for a hide tentering apparatus.
- the present invention relates to an elastic tentering mat for a hide tentering apparatus, said mat being in the form of an endless mat loop and having at least two layers of rubber attached to each other by vulcanizat ⁇ ion (hot or cold vulcanization) .
- a continuous-action tentering apparatus employing this type of tentering mat is disclosed in the Applicant's earlier published application WO 85/03309.
- a hide to be tentered resists strongly the elongation of tenter ⁇ ing mats within the area where the hide is compressed between the tentering mats.
- a result of this is that, beyond this mentioned area, i.e. within the marginal area of mats, a mat will be subjected to quite sub ⁇ stantial elongations resulting in a hazard of tenter ⁇ ing mat edges ripping off.
- An object of the invention is to provide a tentering mat capable of eliminating this rip-off hazard of mat edge portions.
- a tentering mat of the invention is characterized in that between the layers of rubber are placed crimped or other ⁇ wise winding fibres for preventing elongation of said tentering mat after a certain stretch and that, in add ⁇ ition to said fibre layer, the mat is provided with longitudinal straight fibres or filaments for preventing elongation of the mat in its lengthwise direction.
- the fibres allowing a limited stretch or elongation may form a network in which the directions of fibres are so distributed that said elongation limiting action is ac ⁇ hieved in all directions in the plane of a mat.
- a layer, of fibres having said limited elasticity need not necessarily extend across the entire width of a mat as its duty is to prevent disproportional elongation of sections beyond the hide to be tentered as compared to a section or area covered by the hide to be tentered.
- this would restrict the disposition of hides and the minimum hide size that can be tentered by means of the apparatus, so in the most preferred embodiment, said layer of fibres extends over the entire area of a tentering mat.
- a stretch allowed by the layer of fibres is substantially equal to the maximum stretch of a hide in question.
- a layer of fibres can be made of single or multithread crimped or creped filaments.
- a net braid ⁇ ing woven from creped polyamide thread can be consider ⁇ ed. It is obvious, however, that the fibres employed can be any synthetic or natural fibres having high tensile strength.
- the mat must include, in addition to a layer of fibres allowing a limited elongation, straight longitudinal fibres or filaments for preventing elongation of the mat in its lengthwise direction, i.e. in the direction of an endlessly continuing mat loop.
- fig. 1 shows a portion of a tentering mat of the invent ⁇ ion as a section taken along line I-I in fig. 2 and fig. 2 is a cross-section of a corresponding mat port- -ion with the sectional lines of the upper rubber layer 1 being omitted for the sake of clarity.
- an endless mat loop With the lengthwise direction of an endlessly continuing loop indicated by an arrow A.
- the longitudinal center axis of said mat loop is indicated by a dot-dash line B.
- the mat is made of two rubber layers 1 and 2, attached to each other by vulcanization. Vulcanization can be hot vulcanization or cold vulcani ⁇ zation with the help of adhesives. Between rubber lay ⁇ ers 1 and 2 is placed a layer 3, comprising crimped, creped or otherwise winding fibres and characterized by its ability to prevent elongation of a ready-made mat after a certain stretch.
- the fibre layer 3 is prefer ⁇ ably designed as net braiding for obtaining a firm en ⁇ gagement of rubber layers 1 and 2 through net eyelets. What is essential, however, is that as a result of crimping, creping or other zifzagging the eyelet fila ⁇ ments stretch over a certain distance before they begin to limit elongation of the rubber mat. This stretch is preferably selected to be equal to the maximum stretch of hides.
- a suitable material is e.g. creped poly- amide filament. It is clear that all synthetic or natural fibres having sufficient tensile strength can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Carpets (AREA)
- Woven Fabrics (AREA)
- Nonwoven Fabrics (AREA)
Abstract
La natte d'élargissement élastique pour une élargisseuse de peaux comprend au moins deux couches de caoutchouc (1, 2) fixées entre elles par vulcanisation (vulcanisation à chaud ou à froid). Etant donné qu'une peau à élargir résiste vigoureusement à l'élongation des nattes, les sections marginales d'une natte au delà de la peau sont étirées de force d'une manière disproportionnée, de sorte que les risques de déchirures des sections marginales seront plus grands. De manière à éviter ceci, on aménage entre les couches de caoutchouc (1, 2) des fibres crêpées ou d'enroulement (3) pour empêcher l'élongation de la natte d'élargissement au delà d'une certaine valeur d'étirement.The elastic widening mat for a skin broadener comprises at least two layers of rubber (1, 2) fixed between them by vulcanization (hot or cold vulcanization). Since a skin to be enlarged vigorously resists stretching of the mats, the marginal sections of a mat beyond the skin are forcibly stretched disproportionately, so that the risks of tearing of the marginal sections will be taller. In order to avoid this, creped or winding fibers (3) are arranged between the rubber layers (1, 2) to prevent the elongation of the widening mat beyond a certain stretching value.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI850610 | 1985-02-14 | ||
FI850610A FI71171C (en) | 1985-02-14 | 1985-02-14 | ELASTIC UTBREDNINGSMATTA FOER EN UTBREDNINGSANORDNING FOER SKNN |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0214205A1 true EP0214205A1 (en) | 1987-03-18 |
Family
ID=8520380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86901403A Withdrawn EP0214205A1 (en) | 1985-02-14 | 1986-02-12 | Elastic tentering mat for a hide tentering apparatus |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0214205A1 (en) |
JP (1) | JPS62501918A (en) |
KR (1) | KR880700081A (en) |
BR (1) | BR8605548A (en) |
FI (1) | FI71171C (en) |
WO (1) | WO1986004927A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1505028C3 (en) * | 1965-10-16 | 1980-09-25 | Bayer Ag, 5090 Leverkusen | Radial tire |
FR1603133A (en) * | 1968-07-08 | 1971-03-22 | ||
GB1445567A (en) * | 1972-08-11 | 1976-08-11 | Solar Thompson Eng Co Ltd | Conveyor belts |
GB1561361A (en) * | 1976-02-23 | 1980-02-20 | British Hovercraft Corp Ltd | Flexible laminated sheet |
SE432615B (en) * | 1981-10-12 | 1984-04-09 | Geweniger Karl Otto | SET AND MACHINE UNIT FOR TREATMENT OF THE WORK CONSISTING OF SKIN, SKIN, LEATHER OR LIKE |
FI68656C (en) * | 1984-01-25 | 1985-10-10 | Leena Viljanmaa | FOERFARANDE OCH ANORDNING FOER SPAENNING AV HUDAR |
-
1985
- 1985-02-14 FI FI850610A patent/FI71171C/en not_active IP Right Cessation
-
1986
- 1986-02-12 EP EP86901403A patent/EP0214205A1/en not_active Withdrawn
- 1986-02-12 WO PCT/FI1986/000016 patent/WO1986004927A1/en not_active Application Discontinuation
- 1986-02-12 JP JP61501379A patent/JPS62501918A/en active Pending
- 1986-02-12 BR BR8605548A patent/BR8605548A/en unknown
- 1986-10-08 KR KR1019860700699A patent/KR880700081A/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8604927A1 * |
Also Published As
Publication number | Publication date |
---|---|
BR8605548A (en) | 1987-04-22 |
KR880700081A (en) | 1988-02-15 |
FI71171C (en) | 1986-11-24 |
FI71171B (en) | 1986-08-14 |
WO1986004927A1 (en) | 1986-08-28 |
JPS62501918A (en) | 1987-07-30 |
FI850610A0 (en) | 1985-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI |
|
17P | Request for examination filed |
Effective date: 19870127 |
|
17Q | First examination report despatched |
Effective date: 19881220 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19890503 |