DK180258B1 - Detectable poultry-shackle locking pin - Google Patents

Detectable poultry-shackle locking pin Download PDF

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Publication number
DK180258B1
DK180258B1 DKPA201900966A DKPA201900966A DK180258B1 DK 180258 B1 DK180258 B1 DK 180258B1 DK PA201900966 A DKPA201900966 A DK PA201900966A DK PA201900966 A DKPA201900966 A DK PA201900966A DK 180258 B1 DK180258 B1 DK 180258B1
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DK
Denmark
Prior art keywords
locking pin
plastic material
metal fibers
carrier
matrix
Prior art date
Application number
DKPA201900966A
Other languages
Danish (da)
Inventor
Nybo Johansen Simon
Original Assignee
Teknologisk Inst
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Teknologisk Inst filed Critical Teknologisk Inst
Priority to DKPA201900966A priority Critical patent/DK180258B1/en
Priority to PCT/EP2020/072732 priority patent/WO2021028524A1/en
Application granted granted Critical
Publication of DK180258B1 publication Critical patent/DK180258B1/en
Publication of DK201900966A1 publication Critical patent/DK201900966A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C21/00—Processing poultry
    • A22C21/0007—Poultry shackles
    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C17/00—Other devices for processing meat or bones
    • A22C17/0073—Other devices for processing meat or bones using visual recognition, X-rays, ultrasounds, or other contactless means to determine quality or size of portioned meat
    • A22C17/008—Other devices for processing meat or bones using visual recognition, X-rays, ultrasounds, or other contactless means to determine quality or size of portioned meat for measuring quality, e.g. to determine further processing
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Biophysics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Meat And Fish (AREA)

Abstract

The present invention relates to a locking pin for use in a product carrier/chicken leg lock/shackle for suspending poultries at abattoirs, during the processing of the carcasses. More specifically the invention relates to particular locking pin, made from a detectable, composite plastic material.

Description

DK 180258 B1 1 DETECTABLE POULTRY-SHACKLE LOCKING PIN
TECHNICAL FIELD The present invention relates to a locking pin for use in a shackle/product carrier/chicken leg lock for suspending poultries at abattoirs, during the processing of the carcasses. More specifically the invention relates to particular locking pin, made from a detectable, composite plastic material.
BACKGROUND ART Shackles or product carriers are chicken leg locks used for suspending poultry at abattoirs, during the processing of the carcasses. Devices widely used in the industry for conveying and accommodating slaughtered animals have been described in e.g.
WO9313671, US2005061621, and further refined in WO2018065430.
Such devices for use in the food industry preferably are made from plastic materials, which are approved for use in the food industry, i.e. food grade materials. Food-grade materials include plastics like polyethylene terephthalate (PET), polypropylene (PP), high- and low-density polyethylene (HDPE/LDPE) and polycarbonate (PC).
Although approved as a food contact substance, this substance should not contaminate the food product during processing, and if plastic-material is in fact lost, it is important that is can later be retrieved.
Similar issues are known from other areas of technology, where plastic objects are part of the manufacture of food or pharmaceuticals.
US6177113 describes a method for detecting plastic or other elastomeric materials, which are used in conjunction with food processing, and more particularly, to materials that have metal particulates embedded therein for easy detectability during or subsequent to the food processing.
WO2006026823 describes a method for detecting a physical contamination from food products or pharmaceutical products in a product flow, by subjecting the product to metal or magnetic field detecting equipment.
WO2012134981 describes a plastic packaging component formed of a resin containing an electromagnetic spectrally detectable additive mixed with the resin.
WO2017096366 describes X-ray and metal detectable thermoset composites for use in food or pharmaceutical processing or manufacturing.
DK 180258 B1 2 However, the locking pin described herein, for use in a conventional product carrier (shackle) frequently used at abattoirs for suspending poultries, has not been disclosed.
SUMMARY OF THE INVENTION A particular problem associated with use of a chicken leg lock/shackle of the type described above in the slaughterhouse industry, is the wear to which the leg lock is exposed, and especially the abrasion directed to the specific locking pin (2). The locking pin ensures that the leg lock remains closed during the following processing, and wear of the locking pin greatly increases the risk for the locking pin being expelled, reinforced by the built-in spring mechanism (3), which causes the risk of the lock ending up as an unwanted pollution in the final meat product.
Therefore, in its first aspect, the invention provides a locking pin (2) for use in a product carrier/shackle that is used at abattoirs for suspending poultries, which locking pin is made of a harder and more resistant material, thereby reducing the risk of spoiling the lock, and which locking pin, moreover, is also traceable, in case the product ends up in the production.
The locking pin (2) of the invention may be characterised as consisting of a composite material, made up of a food-grade base (matrix, carrier) plastic material, comprising of from 10 to 12% of detectable metal fibres.
In this concentration, the locking pin (2) of the invention exhibits an appropriate hardness without being too porous, when compared to a non-composite plastic material, and at the same time holds sufficient metal fibres to make the lock, and even smaller pieces of the locking pin (2), detectable, thereby making it possible to retrieve the product in case it is lost during processing.
In another aspect, the invention provides a method for producing the locking pin of the invention, which method may be characterised by comprising the subsequent steps of: a. providing the base (matrix, carrier) plastic material in the form of a granulate, for processing in an injection moulding machine; b. in an injection moulding machine, heating up the base plastic material to a suitable temperature, where the plastic material becomes sufficiently liquid for mixing and distribution of metal fibres to be added; c. adding of metal fibres, and mixing and distribution of the added metal fibres until they are distributed evenly in the base material; d. pressing the heated (hot) composite material into an injection mould, designed according to the design of the locking pin (2) of the invention; and
DK 180258 B1 3 e. ejection of the moulded locking pin (2).
In a further aspect, the invention relates to a method, for use in at abattoirs, for detecting the presence of the locking pin (2) of the invention, or a part hereof, in a poultry meat product, which method may be characterised by comprising the subsequent steps of: a. scanning of the outgoing meat product (substrate) using a metal detector for detecting any the presence of the locking pin, or a part hereof; and b. if a locking pin, or any part hereof, is identified, discarding the meat product, or part hereof, in question.
Other objects of the invention will be apparent to the person skilled in the art from reading the following detailed description and accompanying drawings.
Any combination of two or more of the embodiments described herein is considered within the scope of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The present invention is further illustrated by reference to the accompanying drawing, in which: Fig. 1 shows the locking pin (2) of the invention, composed of a lock head (7), an actuator connecting piece (8), which actuator connecting piece holds a lock radius (9).
Fig. 2 shows a product carrier/shackle (1), frequently used for suspending poultries at abattoirs, which product carrier/shackle comprises the locking pin (2) of the invention, attached to the product carrier (1) via a spring (3), having a base element (4) with two hooks attached (5) (i.e. a right hook and a left hook), which hooks are inter- connected via an axle (6), on which the hooks can rotate; Fig. 3 shows another view of the product carrier/shackle (1), which product carrier/shackle comprises the locking pin (2) of the invention, attached to the product carrier (1) via a spring (3), having a base element (4) with hooks inter-connected via an axle (6), on which the hooks can rotate; and Fig. 4 shows yet another view of the product carrier/shackle (1), which product carrier/shackle comprises the locking pin (2) of the invention, attached to the product carrier (1) via a spring (3), having a base element (4) with two hooks attached (5) (i.e. a right hook and a left hook), which hooks are inter-connected via an axle (6), on which the hooks can rotate.
DK 180258 B1 4
DETAILED DISCLOSURE OF THE INVENTION The locking pin of the invention In its first aspect, the invention provides a locking pin (2) for use in a product carrier (shackle) (1), designed for use in abattoirs for suspending poultries. The locking pin of the invention may be characterised by being a composite material, made from a food-grade, base (matrix) plastic material, comprising of from 10 to 12% of detectable metal fibres.
The base material for use according to the invention may e.g. be polyethylene terephthalate (PET), polypropylene (PP), high- or low-density polyethylene (HDPE/LDPE), or polycarbonate (PC).
In one embodiment, the base material for use according to the invention is polypropylene (PP).
In another embodiment, the composite locking pin of the invention is made from polypropylene (as base material), comprising of from 10 to 11.5% of metal fibres, or of from 10 to 11% of metal fibres, e.g. 10.5% of metal fibres.
In a further embodiment, the composite locking pin of the invention is made from polypropylene (as base material), comprising stainless steel having electrical and magnetic properties.
In a yet further embodiment, the composite locking pin of the invention is made from polypropylene (as base material), comprising ferritic stainless steel, AISI 430 or
440.
Manufacture of the locking pin In another aspect, the invention relates to a method, for manufacture of the locking pin (2) of the invention.
The method of producing the locking pin of the invention may be characterised by comprising the subsequent steps of: a. providing a base (matrix, carrier) plastic material in the form of a granulate, suitable for being processed in an injection moulding machine; b. in an injection moulding machine, heating up the base plastic material to a suitable temperature, where the plastic material becomes sufficiently liquid for mixing and distribution of metal fibres to be added; c. addition of metal fibres, and mixing and distribution of the added metal fibres until they are distributed evenly in the base material; d. pressing the heated (hot) composite material into an injection mould, configured to the design of the locking pin (2) of the invention; and e. ejection/liberation of the moulded locking pin (2).
DK 180258 B1 The base (matrix, carrier) plastic material for use in the method of the invention may be any of the base (matrix, carrier) plastic materials described above. Injection moulding is a manufacturing process for producing parts by injecting molten material into a mould.
5 The injection moulding machine for use in the method of the invention may be any conventional machine, also known as an injection press, that produces plastic products by the injection moulding process.
The injection mould for use according to the invention may be designed to produce one or more locking pins (units) in one processing step, i.e. a multi-unit injection mould. A multi-unit injection mould for use according to the invention may be designed to produce of from 2 to 20 units (locking pins) in one press, e.g. of from 4 to 15 units (locking pins) in one press, or from 6 to 12 units (locking pins) in one press, e.g. 10 units (locking pins) in one press. The temperature suited for moulding, where the plastic material becomes sufficiently liquid for mixing and distribution of metal fibres to be added, greatly depends on the composition in question, i.e. the nature of the base material as well as the content of metal fibres, will be apparent to the person skilled in the art. The metal fibres for use in the method of the invention may be any commercially available metal fibres, that should be added in the above stated concentrations.
Method for detecting the locking pin In a further aspect, the invention relates to a method, for use at abattoirs, for detecting the presence of the locking pin of the invention, or any part hereof, in a poultry meat product. The method of the invention may be characterised by comprising the subsequent steps of: a. scanning of the outgoing meat product (substrate) using a metal detector for detecting any the presence of the locking pin, or a part hereof; and b. if a locking pin, or any part hereof, is identified, discarding the meat product, or part hereof, in question. The metal detector for use according to the invention may in particular be a low frequency detector. In another embodiment, a metal detector with a frequency of about 3-20 kHz is used. The detector for use according to the invention should be placed near the conveyor, transporting the meat products.
DK 180258 B1 6 List of reference signs List of reference numbers/signs used in the context of this application:
1. Product carrier (shackle) for suspending poultry at abattoirs
2. Locking pin
3. Spring
4. Plane base
5. Hook
6. Axle
7. Lock head
8. Actuator connecting piece
9. Lock radius

Claims (9)

DK 180258 B1 1 PatentkravDK 180258 B1 1 Patent claim 1. En låsestift til brug sammen med en produktbærer, såsom en bøjle, beregnet til brug i slagterier til ophængning af fjerkræ, hvilken låsestift består af et sammensat materiale bestående af et fødevare-godkendt matrix- eller bære-plastmateriale, som omfatter fra 10 til 12% af detekter-bare metalfibre.A locking pin for use with a product carrier, such as a shackle, intended for use in poultry hanging slaughterhouses, which locking pin consists of a composite material consisting of a food-approved matrix or carrier plastic material comprising from 10 to 12% of detectable metal fibers. 2. Låsestiften ifølge krav 1, hvor matrix- eller bære-plastmaterialet er polyethylenterephthalat (PET), polypropylen (PP), høj- og lav-densitets-polyethylen (HDPE / LDPE) eller polycarbonat (PC).The locking pin of claim 1, wherein the matrix or carrier plastic material is polyethylene terephthalate (PET), polypropylene (PP), high and low density polyethylene (HDPE / LDPE) or polycarbonate (PC). 3. Låsestiften ifølge krav 1, hvor matrix- eller bære-plastmaterialet er polypropylen (PP).The locking pin of claim 1, wherein the matrix or carrier plastic material is polypropylene (PP). 4. Låsestiften ifølge krav 3, hvor matrix- eller bære-plastmaterialet er polypropylen, der omfatter fra 10 til 11,5% metalfibre, eller fra 10 til 11% metalfibre.The locking pin of claim 3, wherein the matrix or carrier plastic material is polypropylene comprising from 10 to 11.5% metal fibers, or from 10 to 11% metal fibers. 5. Låsestiften ifølge krav 1, hvor metalfibrene er fremstillet af rustfrit stål med elektriske og magnetiske egenskaber.The locking pin according to claim 1, wherein the metal fibers are made of stainless steel with electrical and magnetic properties. 6. Låsestiften ifølge krav 5, hvor metalfibrene er fremstillet af ferritisk rustfrit stål, AISI 430 eller 440.The locking pin according to claim 5, wherein the metal fibers are made of ferritic stainless steel, AISI 430 or 440. 7. Fremgangsmåde til fremstilling af låsestiften ifølge et hvilket som helst af kravene 1-6, hvilken fremgangsmåde omfatter de efterfølgende trin: a. tilvejebringelse af basis-plastmateriale i form af et granulat til behandling i en sprøjtestøbemaskine; b. i en sprøjtestøbemaskine, opvarmning af basisplastmaterialet til en passende temperatur, hvor plastmaterialet bliver tilstrækkelig likvid til blanding og distribution af de metalfibre, der skal tilsættes; c. tilsætning af metalfibre, og blanding og distribution af de tilsatte metalfibre, indtil de er jævnt fordelt i basismaterialet; d. presning af det opvarmede kompositmateriale i en injektionsform, designet i henhold til udformningen af låsestiften (2) ifølge opfindelsen; og e. udkast/frigørelse af den støbte 18sestift (2).A method of manufacturing the locking pin according to any one of claims 1-6, which method comprises the following steps: a. Providing a base plastic material in the form of a granulate for treatment in an injection molding machine; b. in an injection molding machine, heating the base plastic material to a suitable temperature, where the plastic material becomes sufficiently liquid for mixing and distributing the metal fibers to be added; c. adding metal fibers, and mixing and distributing the added metal fibers until they are evenly distributed in the base material; d. pressing the heated composite material into an injection mold, designed according to the design of the locking pin (2) according to the invention; and e. draft / release of the molded 18s pin (2). DK 180258 B1 2DK 180258 B1 2 8. Fremgangsmåde, til anvendelse i slagterier, til påvisning af tilstedeværelsen af låsestiften, eller dele heraf, ifølge et hvilket som helst af kravene 1-6, i et fjerkræprodukt, hvilken fremgangsmåde omfatter de efterfølgende trin: a. scanning af det udgående kødprodukt (substratet) ved anvendelse af en metaldetektor til at detektere tilstedeværelsen af låsestiften, eller en del heraf; og b. hvis der identificeres en låsestift, eller en del heraf, kassation af kødproduktet, eller en del heraf.A method, for use in slaughterhouses, for detecting the presence of the locking pin, or parts thereof, according to any one of claims 1-6, in a poultry product, which method comprises the following steps: a. Scanning the outgoing meat product ( the substrate) using a metal detector to detect the presence of the locking pin, or a portion thereof; and b. if a locking pin or part thereof, discarding of the meat product, or part thereof is identified. 9. Fremgangsmåde ifølge krav 8, hvor der i trin a anvendes en metaldetektor med lav frekvens.A method according to claim 8, wherein in step a a low frequency metal detector is used.
DKPA201900966A 2019-08-14 2019-08-14 Detectable poultry-shackle locking pin DK180258B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DKPA201900966A DK180258B1 (en) 2019-08-14 2019-08-14 Detectable poultry-shackle locking pin
PCT/EP2020/072732 WO2021028524A1 (en) 2019-08-14 2020-08-13 Detectable product carrier and/or poultry-shackle, locking pin and method for their use and production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA201900966A DK180258B1 (en) 2019-08-14 2019-08-14 Detectable poultry-shackle locking pin

Publications (2)

Publication Number Publication Date
DK180258B1 true DK180258B1 (en) 2020-09-17
DK201900966A1 DK201900966A1 (en) 2020-09-17

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Family Applications (1)

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DKPA201900966A DK180258B1 (en) 2019-08-14 2019-08-14 Detectable poultry-shackle locking pin

Country Status (2)

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DK (1) DK180258B1 (en)
WO (1) WO2021028524A1 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9200090A (en) 1992-01-17 1993-08-16 Stork Pmt APPARATUS AND INSTALLATION FOR TRANSPORTING GENDER ANIMALS, IN PARTICULAR BIRDS.
US6177113B1 (en) 1995-06-27 2001-01-23 Apv Crepaco, Inc. Process for detecting plastic or elastomeric contaminants in food processing
US6179702B1 (en) * 1998-02-17 2001-01-30 Systemateholland, B.V. Rotary shackle with position lock
US20050236407A1 (en) * 2001-02-15 2005-10-27 Integral Technologies, Inc. Low cost food processing, preparation, and handling devices manufactured from conductive loaded resin-based materials
NL1024150C2 (en) 2003-08-22 2005-02-23 Stork Pmt Device and method for processing slaughtered animals and / or parts thereof provided with a transport system.
JP2008512655A (en) 2004-09-09 2008-04-24 ベル，グレンダ，フェイ Separation of plastics and elastomers for food and pharmaceuticals
GB0703501D0 (en) * 2007-02-22 2007-04-04 D C Norris & Co Engineering Lt Improvements for scraper blades for cooking vessels
SE532469C2 (en) * 2008-10-31 2010-02-02 Kebco Kebab Company Ab Procedure for automated production of frozen kebab slices
US8980982B2 (en) 2011-03-25 2015-03-17 Illinois Tool Works, Inc. Electromagnetic spectrally detectable plastic packaging components
EP3383332A4 (en) 2015-12-04 2019-08-21 Molded Fiber Glass Companies X-ray and metal detectable thermoset composites for use in food and pharmaceutical manufacturing
DK179305B1 (en) 2016-10-06 2018-04-23 Teknologisk Inst Poultry shackle or product carrier with tendon trap for suspending poultry or parts thereof

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Publication number Publication date
DK201900966A1 (en) 2020-09-17
WO2021028524A1 (en) 2021-02-18

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Effective date: 20200917

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