US20160318681A1 - Wrapper for soap bar - Google Patents

Wrapper for soap bar Download PDF

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Publication number
US20160318681A1
US20160318681A1 US15/104,691 US201415104691A US2016318681A1 US 20160318681 A1 US20160318681 A1 US 20160318681A1 US 201415104691 A US201415104691 A US 201415104691A US 2016318681 A1 US2016318681 A1 US 2016318681A1
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US
United States
Prior art keywords
adhesive
sheet
wrapper
laminate
edges
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.)
Abandoned
Application number
US15/104,691
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English (en)
Inventor
Sridhar Janardhana
Adesh Tewari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Conopco Inc
Original Assignee
Conopco Inc
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 Conopco Inc filed Critical Conopco Inc
Assigned to CONOPCO, INC., D/B/A UNILEVER reassignment CONOPCO, INC., D/B/A UNILEVER ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JANARDHANA, SRIDHAR, TEWARI, Adesh
Publication of US20160318681A1 publication Critical patent/US20160318681A1/en
Abandoned legal-status Critical Current

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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
    • B65D65/02—Wrappers or flexible covers
    • B65D65/14—Wrappers or flexible covers with areas coated with adhesive
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/14—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks folded-up around all sides of the contents from a portion on which the contents are placed
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • the invention relates to wrappers for bars of soap or like articles.
  • Soap bars are generally packaged in paperboard cartons and paper composites (laminated sheet material) usually along with a paperboard stiffener.
  • the paperboard generally has a barrier layer of plastic.
  • the carton provides a rectangular shape for stacking and protects the soap bar until use.
  • the wrapper and stiffener combination provide a cost effective alternative to cartons.
  • a paper composite is made of a layer of paper along with one or more layers of a plastic material.
  • the paper component provides stiff substrate to and add strength and also provides a surface for sealant deposition.
  • the plastic film provides decoration features and moisture and fragrance barrier properties.
  • the wrapper is the most common form of package for soap bars.
  • Bars of soap are used across the world. They are available in various shapes although the sizes are more or less standardized excepting for the differences in grammage. Rectangular or saddle shaped bars are the most common as they are easy to grip and use.
  • a typical bar of soap is packaged in the envelope-wrapped format.
  • a bar is placed on a rectangular sheet of wrapper material and then a stiffener, usually a thick sheet of paper, is placed over the bar so as to surround the bar along the longitudinal extent while leaving the shorter ends of the bar open. Thereafter, the two overlapping long edges of the sheet are lap-sealed. Then the shorter edges of the sheet are sealed by an envelope seal on either side. This completes the wrapping operation.
  • U.S. Pat. No. 4,877,674A discloses a single piece non-wrinkling wrapper for bars of soap which is made from a lamina of sheets of a flexible plastic film and a water absorbent paper. The film and paper are superimposed and bonded together along their margins by continuous bands of adhesive. The exposed surface of the paper sheet is coated with a cold seal cohesive along the margins in register with the adhesive bands. When wrapped around a bar of soap, the cohesive and adhesive fall in the back seal and end seal areas of the soap, thereby double wrapping the bar with the film and paper sheets and with an air space between the sheets which prevents or minimizes the wrinkling of the outer wrap.
  • This publication discloses the overlapped margins being united by continuous bands of adhesive. The method is slightly better than the conventional process.
  • WO/1996/037418 discloses a wrapping material having a bonding material disposed on either an upper surface or a lower surface.
  • the document discloses wrappers which are stacked on top of each other with the help of adhesive such that each wrapping sheet is bondingly and releasably connects to one other sheet of wrapping material to form the pad whereby one of the sheets of material can be releasably disconnected from another sheet of material by pulling the sheets of material apart.
  • This pad of plurality of wrappers stacked on top of each other and bondingly and releasably connected to each other are better suited for manual and small scale packaging.
  • the present invention is adapted to be used in connection with a food preparation center (not shown) such as a McDonald's® or a Wendy's® type of restaurant or other restaurant where food is prepared for consumption at the center or for take-away by the customer for consumption at a location remote from the center.
  • a food preparation center such as a McDonald's® or a Wendy's® type of restaurant or other restaurant where food is prepared for consumption at the center or for take-away by the customer for consumption at a location remote from the center.
  • this method is not suited for a mass scale production of wrapper for soap bars.
  • the soap bars as a product is something which is usually produced and packaged on a mass scale in the factory by specially designed machines which package the soaps at speeds as high as 180 to 550 Units per minute, i.e., soaps per minute. Therefore there is a need to have soap wrappers in sheet form which are severable into plurality of discrete wrappers which are fit to be fed in the modern day automated soap packaging/wrapping machines for speedy packaging.
  • EP1340690 (SONY CORP) relates to a packing material used for wrapping an article to be packed and sealing and packing the article to be packed by heat-sealing mutually superposed end parts.
  • the packing material is composed of a biodegradable film.
  • Heat sealing agent layers are selectively provided in the heat sealing positions or the heat-sealed parts of the biodegradable film.
  • the heat sealing agent layers are provided on the front surface and the back surface, the front surface and the front surface, or the back surface and the back surface of the mutually superposed biodegradable film when the article to be packed is packed.
  • US2006201115 A1 Cold Palmolive
  • a wrapper which has some features of a carton pack.
  • a single sheet of material is die-cut to form a main section with the top, bottom and longitudinal side panels and end flaps appended to each panel.
  • the sheet of material is weakened by scoring, perforating or scoring at the fold points.
  • Heat-sealable adhesive is applied to the flaps and the overlapping edges.
  • a sheet of laminate comprising a paper component laminated to a plastic component, said sheet comprising, and severable into, plurality of discrete wrappers, each comprising opposed first and second edges and opposed third and fourth edges wherein the paper component of each wrapper comprises:
  • a wrapper for soap bar comprising a paper component laminated to a plastic component, and opposed first and second edges and opposed third and fourth edges, wherein the paper component of each wrapper comprises:
  • FIG. 1 is a plan view of a preferred embodiment of a wrapper.
  • FIG. 2 is an isometric view of another preferred embodiment of a wrapper being used for completion of wrapping of a bar of soap.
  • FIG. 1 is a plan view of a preferred embodiment of a wrapper as seen from the paper component side. Seen in this view is a rectangular wrapper having four edges, a first edge ( 1 ), an opposed second edge ( 2 ), a third edge ( 3 ) and opposed thereto a fourth edge ( 4 ). An imaginary line ( 5 ) between the first ( 1 ) and second edge ( 2 ) divides the wrapper into two equal halves There is a first adhesive-coated portion ( 6 ) located along substantially the entire length of the first edge ( 1 ). The second adhesive-coated portion ( 7 ) is located between the first and second edges and along a part of the length of the third edge ( 3 ).
  • the third adhesive-coated portion ( 8 ) is located opposite the second portion ( 7 ) along a part of the length of the fourth edge ( 4 ).
  • Each adhesive-coated portion has coating of knurled pattern as seen in the figure. Width of the second adhesive-coated portion ( 7 ) is about 16% of the total width of the wrapper as defined by the third ( 3 ) and fourth edge ( 4 ). So also, width of the third adhesive-coated portion ( 8 ) is about 16% of the total width of the wrapper as defined by the third ( 3 ) and fourth edge ( 4 ).
  • the second and third adhesive-coated portions ( 7 and 8 ) are each located about an imaginary line ( 5 ) between the first ( 1 ) and second edge ( 2 ) which divides the wrapper into two equal halves, with a major part of the second ( 7 ) and the third adhesive-coated portion ( 8 ) lying in the half towards the second edge ( 2 ).
  • Width of the first adhesive-coated portion ( 6 ) is 14% of the total length of the wrapper as defined by the first ( 1 ) and second edge ( 2 ).
  • FIG. 2 is shown an isometric view of another preferred embodiment of a wrapper being used for completion of wrapping of a bar of soap (shown without a stiffener).
  • the bar of soap ( 9 ) is placed on the wrapper as shown in the figure. Edges ( 1 ) and ( 2 ) are folded over the bar ( 9 ) for lap-seal.
  • the third adhesive-coated portion ( 8 ) is meant to be used for envelope sealing.
  • the second adhesive coated portion ( 7 which is not seen in this view) is meant for the other envelope seal.
  • a sheet of laminate comprising a paper component laminated to a plastic component, said sheet comprising, and severable into plurality of discrete wrappers each comprising opposed first and second edges and opposed third and fourth edges, wherein the paper component of each wrapper comprises:
  • a sheet of laminate is made on continuous basis from a pair of webs (paper component and plastic component) which are brought into facing contact with each other. Before the individual webs are brought together, the longitudinal margins of at least one web are coated with an adhesive and longitudinally spaced transverse bands of adhesive are also applied to the web. Hot melt or any other suitable adhesive is then applied to the paper side of the laminate, which, as described earlier, is conventionally applied across the length and breadth of the paper side of the laminate. The sheet is then wound and moved to a station where it is unwound for use as packaging material.
  • the sheet material After unwinding, the sheet material is severed longitudinally and transversely into the discrete unit-size wrappers for individual bars or like articles.
  • the sheet is especially useful for advanced automated machines that pack the soap bars at speeds as high as 180 to 550 Units per minute, i.e., soaps per minute.
  • the sheets are mostly fed into the machines as rolls and therefore it is important that adhesive or the sealing material is activated only at the time of packaging by an activator such as heat or pressure. If the sealing agent or the adhesive is active under all conditions then it will be difficult to feed such sheets in a roll form in the soap packaging machines.
  • Paper density is a term used in the pulp and paper industry to denote a measure of mass of the product per unit of area for a type of paper or paperboard.
  • the grammage is usually expressed in terms of grams per square meter (g/m 2 ). It is preferred that grammage of the paper component is 30 to 75 g/m 2 , more preferably 40 to 70 g/m 2 .
  • the paper component is preferably selected from poster, chromo or mirror coat paper but other forms of paper could also be used. Further, the paper may be one containing Titanium dioxide or devoid of it.
  • the plastic component is selected from polypropylene, polyethylene, polyester, polyvinyl chloride and combinations thereof.
  • Suitable plastic (thermoplastic) materials for which forms the plastic component of the laminate include polypropylene (such as biaxially oriented polypropylene (“BOPP”)), polyethylene, polyethylene terephthalate (“PET”), polyester, polyvinyl chloride (“PVC”), and suitable combinations thereof.
  • Thermoplastic material is preferably selected to retard the loss of moisture from the bar soap composition upon storage. It is preferred that thickness of the plastic component is 6 to 12 ⁇ m, more preferably 8 to 12 ⁇ m.
  • These plastics can contain various additives such as colorants, fillers, thickeners, catalysts and ultraviolet and other light absorbing compounds.
  • each of the first, second and third adhesive coated portion is in the range of 3 to 10 g/m 2 .
  • Each adhesive-coated portion could comprise a coating of any pattern. It is preferred that the coating is of knurled pattern.
  • the width of the second adhesive-coated portion is 5 to 30% of the total width of the wrapper as defined by the third and fourth edges. It is particularly preferred that one of the ends of the second adhesive-coated portion is flush with the third edge of the wrapper.
  • the third adhesive-coated portion is from 5 to 30% of the total width of said wrapper as defined by said third and fourth edges.
  • each of the second and third adhesive-coated portions is located about an imaginary line between the first and second edges which divides the wrapper into two equal halves with a major part of the second and said third adhesive-coated portions lying in the half towards the second edge.
  • the second and third adhesive coated portions are positioned slightly offset from the imaginary centre-line of each wrapper with a major part of each portion lying in the half towards the second edge. The second and the third adhesive-coated portions are utilized for forming the end-seals or the envelope seals of the wrapper package.
  • width of the first adhesive-coated portion is from 5 to 20% of the total length of said wrapper as defined by said first and second edges. It is further preferred that one end of this first adhesive-coated portion is flush with the first edge of each wrapper.
  • the first adhesive-coated portion is useful for forming the longitudinal lap-seal of the wrapper package.
  • the total grammage of the finished ready-to-use wrappers is about 75 to 80 g/m 2 .
  • the total grammage of the wrapper material is in the range of 65 to 70 g/m 2 . This implies that meterage, i.e., the number of soap bars that could be packaged in 1 meter of the wrapper material is more in the case of the wrapper material disclosed herein.
  • wrapper material tends to reverse-curl on unwinding which is a cumbersome technical problem for the packaging industry.
  • reverse-curling is meant that the wrapper material tends to curl and be biased towards a direction which is away from the direction to be folded which is intended during packaging process.
  • Packaging soap bars is an automated process where even a minor impediment like reverse-curling could lead to serious loss of productivity.
  • the laminate material disclosed herein has significantly lesser tendency towards reverse-curling.
  • the sheet of laminate could be severed into any shape, particularly a 4-sided shape. However it is preferred that wrapper is rectangular in shape. The dimensions of each wrapper could be appropriately selected to suit the shape and size of the article, particularly the soap bars.
  • the paper component of the laminate is preferably is selected from poster, chromo or mirror coat paper.
  • the plastic component is preferably printed, more particularly reverse-printed. It is also preferred that this plastic component is further coated with a heat-sealable lacquer which aids heat sealing with the paper component when the two surfaces are lap-sealed or end-sealed.
  • Purpose of the adhesive is to provide for a sealing surface. Accordingly, any suitable adhesive could be selected depending on the availability and the properties desired. It is preferable to select an adhesive which is active only at the time of packaging by an activator. It is more preferred that the adhesive is selected from heat-activated sealing materials, wax, blends, resin, heat-seal-varnish or rosin.
  • An example of heat-activated sealing material is hot melt adhesive, which preferably is sealable in the running temperature range of 130 to 190° C.
  • Hot melt adhesive is particularly preferred over a cold adhesive for lap type of seal as the cold adhesive requires to be coated on both the surfaces which overlap for the seal whereas application of hot melt adhesive on a any single surface of the two overlapping surfaces is enough for a lap seal. Also, the bonding of the two sealed surfaces is stronger with a hot melt adhesive as compared to a cold adhesive, thereby offering better protection and hermetic seal quality.
  • Cold seal packaging materials also need to be stored in a climate controlled room which may not be desired from a cost-perspective. Also heat-seal film is generally cheaper than cold seal film. Therefore the hot melt adhesive is preferred over a cold adhesive for a better and cost saving option.
  • the adhesive especially the hot melt adhesive, it is preferable to use a screen of 60 to 80 lines per square inch.
  • the adhesive is coated using an etched cylinder and a doctor blade.
  • a wrapper for soap bar comprising a paper component laminated to a plastic component, and opposed first and second edges and opposed third and fourth edges, wherein the paper component of each wrapper comprises:
  • a typical commercial packaged bar of soap generally contains a stiffener, therefore it is preferred that a bar of soap packaged in a disclosed wrapper also contains a stiffener.
  • the main purpose of stiffener is to add mechanical strength.
  • a typical stiffener's grammage is from 100 to 200 g/m 2 and thickness is of the order of 50 to 250 ⁇ m, more preferably 160 to 180 ⁇ m.
  • Preferably the stiffness of the stiffener is at least 3 Taber Stiffness units in each of the longitudinal (machine) and transverse (cross) directions, and more preferably at least 8 Taber Stiffness units in at least the machine direction.
  • the stiffener could be made of coated or uncoated paper. It may also be made of coated or uncoated paper board.
  • polycoated paper may also be made of plastic or a laminate of paper and plastic, generally known as polycoated paper. More preferably, it is made from paper board, coated on one side with a polyethylene coating. Polycoated papers are advantageous as in addition to providing strength, they also prevent or reduce loss of aroma/perfume and volatile components from the packaged bar.
  • the wrapper is wrapped around a bar of soap and stiffening member and its first and third edges are brought in overlapping relationship to form the lap seal. This allows those edge portions to be secured to one another.
  • Lap seal is particularly preferred and desired over a fin seal as it requires less of packaging material.
US15/104,691 2013-12-16 2014-12-01 Wrapper for soap bar Abandoned US20160318681A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
IN3942MU2013 2013-12-16
IN3942/MUM/2013 2013-12-16
EP14152974 2014-01-29
EP14152974.3 2014-01-29
PCT/EP2014/076135 WO2015090924A1 (en) 2013-12-16 2014-12-01 Wrapper for soap bar

Publications (1)

Publication Number Publication Date
US20160318681A1 true US20160318681A1 (en) 2016-11-03

Family

ID=52002959

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/104,691 Abandoned US20160318681A1 (en) 2013-12-16 2014-12-01 Wrapper for soap bar

Country Status (10)

Country Link
US (1) US20160318681A1 (es)
EP (1) EP3083436B1 (es)
JP (1) JP6511054B2 (es)
CN (1) CN105980260B (es)
BR (1) BR112016012374B1 (es)
CA (1) CA2932223A1 (es)
EA (1) EA031961B1 (es)
ES (1) ES2648107T3 (es)
MX (1) MX2016007863A (es)
WO (1) WO2015090924A1 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150232246A1 (en) * 2012-10-05 2015-08-20 Conopco, Inc., D/B/A Unilever Novel laminated film for packaging
US20210282604A1 (en) * 2020-03-16 2021-09-16 Applicant Assignee is GPCP IP Holdings LLC Paper wraps, paper wrapped products, and methods of making the same

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US20150151872A1 (en) * 2012-07-06 2015-06-04 Parkside Flexibles (Europe) Limited Resealable closures

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US6151869A (en) * 1988-09-26 2000-11-28 Southpac Trust International, Inc. Method for wrapping a food item
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US7938263B2 (en) * 2004-03-03 2011-05-10 Chauhan Vijay Package for wrapping at least one article or a pre-arranged group of articles
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US20130026214A1 (en) * 2010-01-13 2013-01-31 Pierric Moulin Packaging box having an improved opening
US20150151872A1 (en) * 2012-07-06 2015-06-04 Parkside Flexibles (Europe) Limited Resealable closures

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150232246A1 (en) * 2012-10-05 2015-08-20 Conopco, Inc., D/B/A Unilever Novel laminated film for packaging
US10046395B2 (en) * 2012-10-05 2018-08-14 Conopco, Inc. Laminated film for packaging
US20210282604A1 (en) * 2020-03-16 2021-09-16 Applicant Assignee is GPCP IP Holdings LLC Paper wraps, paper wrapped products, and methods of making the same
WO2021186282A1 (en) * 2020-03-16 2021-09-23 Gpcp Ip Holdings Llc Paper wraps, paper wrapped products, and methods of making the same
US11638504B2 (en) * 2020-03-16 2023-05-02 Gpcp Ip Holdings Llc Paper wraps, paper wrapped products, and methods of making the same

Also Published As

Publication number Publication date
EA201691247A1 (ru) 2016-10-31
BR112016012374A2 (es) 2017-08-08
JP6511054B2 (ja) 2019-05-08
BR112016012374B1 (pt) 2021-09-28
WO2015090924A1 (en) 2015-06-25
CN105980260A (zh) 2016-09-28
JP2016539872A (ja) 2016-12-22
EP3083436B1 (en) 2017-08-16
MX2016007863A (es) 2016-09-07
EA031961B1 (ru) 2019-03-29
EP3083436A1 (en) 2016-10-26
CA2932223A1 (en) 2015-06-25
ES2648107T3 (es) 2017-12-28
CN105980260B (zh) 2019-03-12

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