• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    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.
    公开号:DK201900966A1
    申请号:DKP201900966
    申请日:2019-08-14
    公开日:2020-09-17
    发明作者:Nybo Johansen Simon
    申请人:Teknologisk Inst；
    IPC主号:
    专利说明:

    DK 2019 00966 A1 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.
    1
    DK 2019 00966 A1 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 2
    DK 2019 00966 A1 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.
    DETAILED DISCLOSURE OF THE INVENTION 3
    DK 2019 00966 A1 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).
    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.
    4
    DK 2019 00966 A1 Injection moulding is a manufacturing process for producing parts by injecting molten material into a mould.
    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.
    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 5
    DK 2019 00966 A1
    3. Spring
    4. Plane base
    5. Hook
    6. Axle
    7. Lock head
    8. Actuator connecting piece
    9. Lock radius 6
    权利要求:
    Claims (9)
    [1] 1. A locking pin for use with a product carrier (shackle), designed for use at abattoirs for suspending poultries, which locking pin consists 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.
    [2] 2. The locking pin of claim 1, wherein the base plastic material is polyethylene terephthalate (PET), polypropylene (PP), high- and low-density polyethylene (HDPE/LDPE) or polycarbonate (PC).
    [3] 3. The locking pin of claim 1, wherein the base plastic material is polypropylene (PP).
    [4] 4. The locking pin of claim 3, wherein the base plastic material is polypropylene, comprising of from 10 to 11.5% of metal fibres, or of from 10 to 11% of metal fibres.
    [5] 5. The locking pin of claim 1, wherein the metal fibres are made from stainless steel having electrical and magnetic properties.
    [6] 6. The locking pin of claim 5, wherein the metal fibres are made from ferritic stainless steel, AISI 430 or 440.
    [7] 7. A method of producing the locking pin according to any one of claims 1-6, which method comprises the subsequent steps of: a. providing the base 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 composite material into an injection mould, designed according to the design of the locking pin (2) of the invention; and e. ejection/liberation of the moulded locking pin (2). 1
    DK 2019 00966 A1
    [8] 8. A method, for use at abattoirs, for detecting the presence of the locking pin, or a part hereof, according to any one of claims 1-6, in a poultry meat product, which method comprises 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.
    [9] 9. The method of claim 8, wherein, in step a, a metal detector with a low frequency is used. 2
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    同族专利:
    公开号 | 公开日
    DK180258B1|2020-09-17|
    WO2021028524A1|2021-02-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NL9200090A|1992-01-17|1993-08-16|Stork Pmt|APPARATUS AND INSTALLATION FOR TRANSPORTING GENDER ANIMALS, IN PARTICULAR BIRDS.|
    US6177113B1|1995-06-27|2001-01-23|Apv Crepaco, Inc.|Process for detecting plastic or elastomeric contaminants in food processing|
    US6179702B1|1998-02-17|2001-01-30|Systemateholland, B.V.|Rotary shackle with position lock|
    US20050236407A1|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|2003-08-22|2005-02-23|Stork Pmt|Device and method for processing slaughtered animals and / or parts thereof provided with a transport system.|
    CN101022931A|2004-09-09|2007-08-22|格伦达·费伊·贝尔|Separation of plastic and elastomers for food and pharmaceutical products|
    GB0703501D0|2007-02-22|2007-04-04|D C Norris & Co Engineering Lt|Improvements for scraper blades for cooking vessels|
    SE532469C2|2008-10-31|2010-02-02|Kebco Kebab Company Ab|Procedure for automated production of frozen kebab slices|
    US8980982B2|2011-03-25|2015-03-17|Illinois Tool Works, Inc.|Electromagnetic spectrally detectable plastic packaging components|
    WO2017096366A1|2015-12-04|2017-06-08|Molded Fiber Glass Companies|X-ray and metal detectable thermoset composites for use in food and pharmaceutical manufacturing|
    DK179305B1|2016-10-06|2018-04-23|Teknologisk Inst|Poultry shackle or product carrier with tendon trap for suspending poultry or parts thereof|
    法律状态:
    2020-09-17| PAT| Application published|Effective date: 20200917 |
    2020-09-17| PME| Patent granted|Effective date: 20200917 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201900966A|DK180258B1|2019-08-14|2019-08-14|Detectable poultry-shackle locking pin|DKPA201900966A| DK180258B1|2019-08-14|2019-08-14|Detectable poultry-shackle locking pin|
    PCT/EP2020/072732| WO2021028524A1|2019-08-14|2020-08-13|Detectable product carrier and/or poultry-shackle, locking pin and method for their use and production|
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