JP2016539872A - Solid soap wrapping paper - Google Patents

Abstract

A laminate sheet comprising a paper component laminated to a plastic component, comprising a plurality of separate wrapping papers and separable from each other, each of said wrapping papers facing each other first (1) And a second edge (2), and a third (3) and a fourth edge (4) facing each other, each of the paper components of the wrapping paper comprising: (i) the first A first adhesive coating portion (6) located substantially along the entire length of one edge; and (ii) between the first and second edges, the third edge A second adhesive coating portion (7) located along part of the length of the part; and (iii) the second adhesive along part of the length of the fourth edge. A laminate sheet is disclosed comprising a third adhesive coating portion (8) located on the opposite side of the coating portion. [Selection] Figure 1

Description

  The present invention relates to wrapping paper for soap bars or similar articles.

  Generally, solid soap is usually packed in a paperboard box and a paper composite (laminated sheet material) together with a paperboard reinforcement. Paperboard usually has a plastic barrier layer. Paper boxes provide rectangles for stacking and protect the soap bar until used. The combination of wrapping paper and reinforcement provides a cost-effective alternative to paper boxes.

  Paper composites are made from a single paper layer with one or more layers of plastic material. The paper component provides a stiff substrate, adds strength, and provides a surface for sealant deposition. The plastic film provides decorative properties as well as moisture and aroma barrier properties. Wrapping paper is the most common form of bar soap package.

  Bar soap is used all over the world. They are available in various forms, but their sizes are largely standardized except for differences in basis weight. Rectangular or bowl-shaped soaps are the most common because they are easy to grasp and use.

  Typical bar soap is packaged in the form of an envelope wrap. First, the soap is placed on a rectangular sheet of wrapping material so that it surrounds the soap along its longitudinal length with the short end of the soap open, and then usually thick. A paper reinforcement is placed on top of the soap. Thereafter, two overlapping long edges of the sheet are lap sealed. Next, the shorter edge of the sheet is sealed by envelope sealing on both sides. This completes the packaging operation.

It is generally observed that the entire paper side of the wrapping paper is usually coated with an adhesive for sealing and operational convenience. Heat sealable adhesives are more common. The adhesive is usually applied with an average basis weight of 12 to 15 g / m ² . However, most of the adhesive is not utilized for bonding or sealing. However, it has been practiced for decades because it is considered convenient to cover the entire surface of the wrapping paper.

  U.S. Pat. No. 4,877,674 (Milprint Inc, 1989) discloses a wrinkle-free piece of wrapping paper for bar soap made from a thin film of flexible plastic film sheet and water absorbent paper sheet. Film and paper are overlaid and glued along their edges with a continuous strip of adhesive. The exposed surface of the paper sheet is coated with a cold seal adhesive along the edges to coincide with the adhesive strip. When wrapped around a soap bar, the adhesive and adhesive penetrate into the soap backseal and end seal areas, thereby wrapping the soap twice in film and paper sheets, and in the gaps between the sheets. Prevent or minimize wrinkles on the outer packaging. This publication discloses overlapping edges integrated by a continuous strip of adhesive. This method is slightly better than conventional processes.

  International Application No. 1996/037418 (HIGHLAND SUPPLY CORPORATION) discloses a packaging material having a bonding material disposed on either the top or bottom surface. However, this document states that each wrapping sheet is stacked on top of each other with the aid of an adhesive so that it joins and releasably connects to the other sheet of wrapping material to form a pad. Thus, a wrapping paper is disclosed in which one material sheet can be releasably separated from another material sheet by pulling the material sheet apart. Pads consisting of a plurality of wrapping papers stacked on top of each other, joined together and releasably connected to one another are more suitable for small scale packaging by hand. This disclosure also provides for McDonald's® or Wendy 'where the food is cooked for the customer to take home for eating and drinking at the facility or for eating and drinking at a location remote from the facility. It is explicitly stated that it is adapted for use in connection with a food cooking facility (not shown) such as a restaurant such as s® or other restaurants. However, the method is not suitable for large scale production of soap bar wrappers.

  Product soaps are usually manufactured and packed on a large scale in the factory by specially designed machines that pack soap at a rate of 180-550 units / minute, ie, 180-550 soaps / minute. Is. Therefore, there is a need to have a soap wrap in sheet form that is separable into a plurality of separate wrapping papers that are adapted to be supplied to modern automatic soap wrapping / packaging machines for rapid packaging.

  EP 1340690 (SONY CORP) relates to a packing material used to seal and package a packaged article by wrapping the packaged article and heat-sealing the overlapped ends. . The packing material is made of a biodegradable film. The heat sealant layer is selectively provided at a heat seal position or a heat sealed portion of the biodegradable film. The heat sealant layer is provided on the front surface and the rear surface, the front surface and the front surface, or the rear surface and the rear surface of the biodegradable films that are overlapped with each other when the article to be packed is packed.

  In US Patent Application Publication No. 200501115 (Colgate Palmolive), a wrapping paper having several characteristics of a carton pack is disclosed. A sheet of material is die cut to form a main portion having a top panel, a bottom panel, and longitudinal side panels, and end flaps attached to each panel. In order to facilitate folding in the desired position, the material sheet is weakened by creasing, perforation, or creasing in the folded position. A heat sealable adhesive is applied to the flaps and overlapping edges.

  Thus, in view of the deficiencies of the prior art, there is an unmet need for a more sustainable and robust bar soap wrapper.

US Pat. No. 4,877,674 International Application No. 1996/037418 European Patent Application Publication No. 1340690 U.S. Patent Application No. 200601115

According to a first aspect, a laminate sheet comprising a paper component laminated to a plastic component, comprising a plurality of separate wrapping papers and separable into each, wherein each of the wrapping papers comprises: First and second edges facing each other, and third and fourth edges facing each other, the paper component of each wrapping paper,
(I) a first adhesive coating portion located substantially along the entire length of the first edge;
(Ii) a second adhesive covering portion located between the first and second edges and along a portion of the length of the third edge;
And (iii) a third adhesive covering portion located on the opposite side of the second adhesive covering portion along a part of the length of the fourth edge, and a laminate sheet is disclosed. Is done.

According to a second aspect, there is a wrapping paper of a soap bar, wherein the wrapping paper is opposed to a paper component laminated on a plastic component, and first and second edges facing each other. Third and fourth edges, and the paper component of each wrapping paper is:
(I) a first adhesive coating portion located substantially along the entire length of the first edge;
(Ii) a second adhesive covering portion located between the first and second edges and along a portion of the length of the third edge;
(Iii) a solid soap package comprising: a third adhesive-coated portion located on the opposite side of the second adhesive-coated portion along a portion of the length of the fourth edge Paper is disclosed.

  Next, the present invention will be described in detail.

It is a top view of preferable embodiment of wrapping paper. FIG. 6 is an isometric view of another preferred embodiment of a wrapping paper used to complete the packaging of bar soap.

DETAILED DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a preferred embodiment of a wrapping paper viewed from the paper component side. In this figure, four edges, a first edge (1), an opposing second edge (2), a third edge (3) and an opposing fourth edge (4) are shown. A rectangular wrapping paper is seen. A virtual line (5) between the first (1) and second edge (2) bisects the wrapping paper. There is a first adhesive covering portion (6) located along substantially the entire length of the first edge (1). The second adhesive covering 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 covering portion (8) is located on the opposite side of the second adhesive covering portion (7) along a part of the length of the fourth edge (4). Each adhesive-coated portion has a knurled pattern coating as seen in the figure. The width of the second adhesive-coated part (7) is about 16% of the total width of the wrapping paper defined by the third edge (3) and the fourth edge (4). The width of the third adhesive-coated part (8) is also about 16% of the total width of the wrapping paper defined by the third (3) and the fourth edge (4).

  The second and third adhesive-coated parts (7 and 8) are each around the imaginary line (5) between the first (1) and second edge (2) that bisect the wrapping paper The second (7) and the third adhesive-coated portion (8) are more present in the half on the second edge (2) side.

  The width of the first adhesive-coated part (6) is 14% of the total length of the wrapping paper defined by the first (1) and second edge (2).

  FIG. 2 shows an isometric view of another preferred embodiment of the wrapping paper used to complete the bar soap packaging (shown without the reinforcement). The soap bar (9) is placed on the wrapping paper as shown in the figure. Edges (1) and (2) are folded over soap (9) for wrap sealing. The third adhesive-coated part (8) is intended to be used for envelope-like sealing. Similarly, the second adhesive coating portion (7) (not shown in this figure) is intended to be used for other envelope-like seals.

According to a first aspect, a laminate sheet is disclosed comprising a paper component laminated to a plastic component. The sheet is a plurality of separate wrapping paper, each having a plurality of separate wrappings having first and second edges facing each other and third and fourth edges facing each other. Paper is provided and separable. The paper components of each wrapping paper are:
(I) a first adhesive coating portion located substantially along the entire length of the first edge;
(Ii) a second adhesive covering portion located between the first and second edges and along a portion of the length of the third edge;
(Iii) a third adhesive covering portion located on the opposite side of the second adhesive covering portion along a part of the length of the fourth edge portion.

  Usually, a laminate sheet is made continuously from a pair of webs (paper component and plastic component) that are in opposing contact with each other. Prior to combining the individual webs, the longitudinal edges of at least one of the webs are coated with an adhesive, and the laterally spaced lateral adhesive is also applied to the web. A hot melt adhesive or any other suitable adhesive is then applied to the paper side of the laminate, which, as mentioned above, is conventionally applied over the length and width of the paper side of the laminate. The The sheet is then wound and moved to the work place where it is unwound for use as a packaging material.

  After unwinding, the sheet material is separated longitudinally and laterally into a separate unit size wrapping paper for individual soaps or similar articles. Sheets are particularly useful for advanced automated machines that pack bar soap at a rate of 180-550 units / min, ie, 180-550 soaps / min. Since sheets are often supplied to the machine as rolls, it is important that the adhesive or sealant is activated only during packaging by an activation factor such as heat or pressure. If the sealant or adhesive is active under all conditions, it may be difficult to feed such a sheet in a roll to a soap packaging machine.

Paper density (better known as basis weight) is a term used in the pulp and paper industry to indicate a measure of product mass per unit area for certain types of paper or paperboard. Basis weight is usually expressed in grams per square meter (g / m ² ). The basis weight of the paper component is preferably 30 to 75 g / ^{m 2,} more preferably from 40~70g / ^{m 2.}

  The paper component is preferably selected from poster paper, chromite paper, or mirror-coated paper, although other forms of paper can also be used. Furthermore, the paper may or may not contain titanium dioxide.

  The plastic component is preferably selected from polypropylene, polyethylene, polyester, polyvinyl chloride, and combinations thereof. Suitable plastic (thermoplastic) materials for forming the plastic component of the laminate are polypropylene (such as biaxially oriented polypropylene (“BOPP”)), polyethylene, polyethylene terephthalate (“PET”), polyester, polyvinyl chloride (“PVC” "), And suitable combinations thereof. The thermoplastic material is preferably selected to delay the loss of moisture from the soap bar composition during storage. The thickness of the plastic component is preferably 6-12 μm, more preferably 8-12 μm. These plastics can contain colorants, fillers, thickeners, catalysts, and various additives such as UV absorbing compounds and other light absorbing compounds.

The basis weight of each of the first, second, and third adhesive-coated portions is preferably in the range of 3 to 10 g / m ² . Each adhesive-coated portion can be provided with any pattern of coatings. A knurled pattern coating is preferred. For a preferred laminate, the width of the second adhesive-coated portion is 5-30% of the total width of the wrapping paper 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 wrapping paper. Similarly, the third adhesive-coated portion is preferably 5-30% of the total width of the wrapping paper defined by the third and fourth edges. Further, it is particularly preferable that one of the end portions of the third adhesive-coated portion is flush with the fourth edge portion of the wrapping paper. In a particularly preferred embodiment, each of the second and third adhesive-coated portions is located around an imaginary line between the first and second edges that bisect the wrapping paper, and the second and the above The third adhesive covering portion is present more in the half on the second edge side. In other words, the second and third adhesive-coated portions are located slightly offset from the imaginary center line of each wrapping paper, and each portion is present more in the half on the second edge side. The second and third adhesive-coated portions are used to form an end seal or envelope-like seal of the wrapping paper package.

  Furthermore, it is preferable that the width | variety of a 1st adhesive agent coating part is 5 to 20% of the full length of the said wrapping paper defined by the said 1st and 2nd edge part. More preferably, one end of the first adhesive-coated portion is flush with the first edge of each wrapping paper. The first adhesive-coated portion is useful for forming a longitudinal wrap seal for the wrapping paper package.

In general, a laminate wrap of a given specification, for example a 30 g / m ² paper component laminated to a 12 μm polyethylene terephthalate (PET) component, usually with a basis weight of 15 g / m ² In the case of wrapping paper containing paper components coated with a hot melt adhesive, the total basis weight of the finished, ready-to-use wrapping paper is observed to be about 75-80 g / m ^2. The In the case of the disclosed wrapping paper with the same specification paper component and polyethylene terephthalate component but with a basis weight of 5 g / m ² applied only to the adhesive coated part, the total wrapping paper material The basis weight is in the range of 65 to 70 g / m ² . This indicates that in the case of the wrapping material disclosed herein, the measured value, i.e., the number of bar soaps that can be packed into one meter of wrapping material is greater.

  It has also been observed that, in general, conventional wrapping materials tend to be reverse wound upon unwinding, which is a technical problem that is troublesome for the packaging industry. Reverse winding means that the wrapping material tends to curl and be biased away from the intended folding direction during the packaging process. The packing of soap bars is an automated process and even minor obstacles such as reverse winding can result in serious productivity losses. Surprisingly, however, it has been found that the laminate materials disclosed herein are significantly less prone to reverse winding.

  The laminate sheet can be separated into an arbitrary shape, particularly a quadrilateral. However, the wrapping paper is preferably rectangular. The dimensions of each wrapping paper can be appropriately selected to suit the shape and size of the article, especially the bar soap.

  The paper component of the laminate is preferably selected from poster paper, chromite paper, or mirror-coated paper.

  The plastic component is preferably printed, more specifically reverse printed. It is also preferred that the plastic component is further coated with a heat-sealable lacquer, which aids in heat sealing with the paper component when the two sides are lap sealed or end sealed.

  The purpose of the adhesive is to provide a sealing surface. Thus, any suitable adhesive can be selected depending on the availability and desired properties. It is preferable to select an adhesive that is activated only during packaging by an activator. More preferably, the adhesive is selected from a heat activated sealant, wax, blend, resin, heat seal varnish, or rosin. An example of the heat-activated sealing material is a hot melt adhesive that can be suitably sealed in an operating temperature range of 130 to 190 ° C.

  Cold adhesive must be coated on both overlapping surfaces for sealing, whereas applying hot melt adhesive to one of the two overlapping surfaces is sufficient for lap sealing Therefore, in the case of a wrap seal, a hot melt adhesive is particularly preferable to a cold adhesive. Also, the bonding of the two sealing surfaces is stronger when using hot melt adhesives compared to cold adhesives, thereby providing better protection and hermetic quality. Also, the cold seal packaging material needs to be stored in a temperature controlled room, which may not be desirable from a cost standpoint. Also, heat seal films are generally less expensive than cold seal films. Therefore, hot melt adhesives are preferred over cold adhesives as a better cost reduction option.

  For coating adhesives, in particular hot melt adhesives, it is preferred to use a screen of 60-80 lines / in 2. The adhesive is coated using an etched cylinder and doctor blade.

In the second aspect of the wrapping paper, the wrapping paper of the solid soap, the paper component laminated to the plastic component, the first and second edges facing each other, and the third and fourth edges facing each other A paper component of each wrapping paper,
(I) a first adhesive coating portion located substantially along the entire length of the first edge;
(Ii) a second adhesive covering portion located between the first and second edges and along a portion of the length of the third edge;
(Iii) a solid soap package comprising: a third adhesive-coated portion located on the opposite side of the second adhesive-coated portion along a portion of the length of the fourth edge Paper is disclosed.

Stiffeners Typical commercial packaged bar soaps generally include a stiffener, and thus it is preferred that the bar soap packaged in the disclosed wrapping paper also includes a stiffener. The main purpose of the reinforcement is to add mechanical strength. A typical reinforcement has a basis weight of 100 to 200 g / m ² and a thickness of about 50 to 250 μm, more preferably 160 to 180 μm. Preferably, the stiffness of the reinforcement is at least 3 Taber stiffness units in each of the longitudinal (flow) and transverse (width) directions, more preferably at least 8 Taber stiffness units in at least the flow direction. The reinforcement can be made of coated paper or uncoated paper. The reinforcement may also be made from coated or uncoated paperboard. The reinforcement may also be made from plastic or a laminate of paper and plastic, commonly known as polycoated paper. More preferably, the reinforcement is made from paperboard coated on one side with a polyethylene coating. In addition to providing strength, polycoated papers are beneficial because they prevent or reduce the loss of aroma / fragrance and volatile components from the packaged soap.

  In a typical wrapping method, the wrapping paper is wrapped around a bar soap and a reinforcing member, with its first and third edges in an overlapping relationship to form a wrap seal. By doing so, it becomes possible to fix the edges to each other. Wrap seals are particularly preferred and desirable over fin seals because they require less packaging material than fin seals.

[Example]
The invention will now be described in more detail using non-limiting examples.

[Example 1]: Performance comparison of conventional laminate to preferred laminate Table 1 shows the specifications and properties of conventional laminates and preferred laminates. Table 1 includes observations.

  The illustrated example clearly shows how the preferred embodiment meets the unmet need for a more sustainable and robust wrapping paper for bar soap.

Claims (14)

A laminate sheet comprising a paper component laminated to a plastic component, wherein the sheet comprises a plurality of separate wrapping papers and can be divided into them, each of the wrapping papers facing each other. 1 (1) and a second edge (2), and a third (3) and a fourth edge (4) facing each other, each of the paper components of the wrapping paper,
(I) a first adhesive-coated portion (6) located substantially along the entire length of the first edge;
(Ii) a second adhesive coating portion (7) located between the first and second edges and along a portion of the length of the third edge;
(Iii) a third adhesive covering portion (8) located on the opposite side of the second adhesive covering portion along a part of the length of the fourth edge; Sheet. The laminate sheet according to claim 1, wherein the paper component has a basis weight of 30 to 70 g / m ² .   The laminate sheet according to claim 1 or 2, wherein the plastic component has a thickness of 6 to 12 µm. The first, the basis weight of each of the second and third adhesive coated portion of the range from 3 to 10 g / m ^2, a laminate sheet according to any one of claims 1 to 3.   5. The laminate sheet according to claim 1, wherein each of the adhesive-coated portions includes a knurled pattern coating. 6.   The width of the second adhesive-coated part (7) is 5-30% of the total width of the wrapping paper defined by the third (3) and fourth edge (4). To 5. The laminate sheet according to any one of 5 to 5. The width of the third adhesive-coated part (8) is 5-30% of the total width of the wrapping paper defined by the third (3) and fourth edge (4). The laminate sheet according to any one of 6 to 6.   Each of the second and third adhesive-coated portions is located around a virtual line (5) between the first (1) and the second edge (2) that bisects the wrapping paper. The second (7) and the third adhesive coating portion (8) are present more in the half on the second edge (2) side. The laminate sheet according to item.   The width of the first adhesive-coated part (6) is 5-20% of the total length of the wrapping paper defined by the first (1) and second edge (2). The laminate sheet according to any one of 1 to 8.   The laminated sheet according to any one of claims 1 to 9, wherein each wrapping paper has a rectangular shape.   The laminate sheet according to any one of claims 1 to 10, wherein the paper component is selected from poster paper, chromite board paper, or mirror coat paper.   The laminate sheet according to any one of claims 1 to 11, wherein the plastic component is selected from polypropylene, polyethylene, polyester, polyvinyl chloride, and combinations thereof.   The laminate sheet according to any one of claims 1 to 12, wherein the adhesive is selected from a heat activated sealant, a wax, a blend, a resin, a heat seal varnish, or a rosin. Solid soap wrapping paper, the wrapping paper comprising a paper component laminated to a plastic component, first and second edges facing each other, and third and fourth edges facing each other And each of the paper components of the wrapping paper comprises:
(I) a first adhesive coating portion located substantially along the entire length of the first edge;
(Ii) a second adhesive covering portion located between the first and second edges and along a portion of the length of the third edge;
(Iii) a solid soap package comprising: a third adhesive-coated portion located on a side opposite the second adhesive-coated portion along a portion of the length of the fourth edge paper.

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