JP2008212392A - Card retainer of merchandise display rack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a card retainer of a merchandise display rack projecting to the front face of a shelf of the merchandise display rack, installed with a card facing an optional direction and stating a name of article, the cost of the article and other sales promotion data, and swinging by a slight indoor wind. <P>SOLUTION: In the card retainer of the merchandise display rack, one end of a shape-retaining drawn polyolefin resin sheet, which is formed by uniaxially drawing a polyolefin resin sheet with a weight-average molecular weight of 100,000-500,000 at a drawing ratio of 10-40 times, is formed with a card retaining part and the other end is formed with a fixed part to the merchandise display rack. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a card holder for a merchandise display shelf for installing a card that protrudes from the front of the merchandise display shelf and describes a merchandise name, merchandise cost, other sales promotion data, and the like.

  In the store, when selling products on the product display shelf, the card with the product name, product cost, other promotional data etc. is attached to the front of the product shelf, but the customer has the product name, In order to check the product cost and other promotional data, it was necessary to come to the front of the product display shelf.

It is preferable that products that you want to sell from the store side, and products that you want to buy from the customer stand out, and it is preferable that you can confirm it from a distance, so a card with the product name, product cost, other promotional data etc. A pop stand that can be installed in front of the shelf has been proposed. For example, a support, a base plate fixed to the lower end of the support, a support plate that is slidable to the support and is locked to the support when a force is applied to the tip, and the support plate And a fastening bolt screwed into a screw hole formed in the base plate for fastening and fixing a shelf plate and a shelf pipe inserted between the base plate and the base plate, and attached to an upper portion of the column. A pop stand (see, for example, Patent Document 1) characterized by comprising a pop support that supports a pop has been proposed.
Japanese Utility Model Publication No. 07-016965

  However, the pop stand has a complicated structure, and the cost increases when many are used. Therefore, there is a demand for a pop stand that is simpler and swings by a slight wind in the room so that the card stands out well. . As the above-mentioned swing POP, for example, as shown in FIG. 2, a card holder for a merchandise display shelf in which adhesive layers 2 ′ and 3 ′ are laminated on both ends of a polyester sheet 1 ′ is available from Kestage Corporation. It is sold under the trade name “Swing T-PET”.

  As shown in FIG. 3, the card holder of this product display shelf has a card 6 attached to the adhesive layer 2 ′ at one end, the adhesive layer 3 ′ at the other end attached to the product display shelf 7, and a polyester. The sheet 1 'is affixed to form an arch shape, and the card 6 is held by the polyester sheet 1' fixed to the merchandise display shelf 7, so that it swings with a slight wind in the room, so it stands out well. You can also check from.

  However, in the card holder of the product display shelf, the card always faces the front of the product display shelf and cannot be seen from the side. In addition, if the side is forcibly visible from the side, the polyester sheet 1 ′ is broken and cannot be returned to the original state, and there is a disadvantage that the swing performance is lost.

  In view of the above problems, the object of the present invention is to install a card that protrudes in front of the shelf of the product display shelf and that faces the arbitrary direction and describes the product name, product cost, other promotional data, and the like. An object of the present invention is to provide a card holder for a merchandise display shelf that can be swung by a slight wind in the room.

  The card holder of the product display shelf of the present invention is a shape-retaining stretched polyolefin resin sheet in which a polyolefin resin sheet having a weight average molecular weight of 100,000 to 500,000 is uniaxially stretched at a stretch ratio of 10 to 40 times. A card holding part is formed at one end, and a fixing part to a merchandise display shelf is formed at the other end.

  As the polyolefin-based resin constituting the stretched polyolefin-based resin sheet, any olefin-based resin having a film forming ability can be used. For example, a high-density polyethylene resin, a medium-density polyethylene resin, a low-density polyethylene resin, a linear low-density Polyethylene resin, polypropylene resin, ethylene-propylene copolymer, ethylene-butene-1 copolymer, ethylene-pentene-1 copolymer, ethylene-hexene-1 copolymer, ethylene-octene-1 copolymer, ethylene -Vinyl acetate copolymer, ethylene- (meth) acrylic ester copolymer, ethylene-vinyl chloride copolymer, ethylene-propylene-butene copolymer, etc., and high-density polyethylene resin is preferably used .

  When the weight average molecular weight of the polyolefin resin is less than 100,000, the polyolefin resin becomes brittle, the stretchability becomes poor, and a stretched polyolefin resin sheet having sufficient strength or creep resistance can be obtained. Conversely, if it exceeds 500,000, the melt viscosity becomes high, the hot melt molding processability is lowered, and it becomes difficult to obtain a uniform sheet.

The melt index (hereinafter referred to as MI) of the polyolefin resin is preferably 0.1 to 20 (g / 10 minutes), more preferably 0.2 to 10 (g / 10 minutes), which is excellent in film moldability. is there. MI is an index representing the melt viscosity of a thermoplastic resin specified in JIS K 7210. Furthermore, in the case of a high density polyethylene resin, 0.94 g / cm ³ or more is preferable because the mechanical strength does not improve even if the density is reduced even if the density is reduced.

  The thickness of the polyolefin resin sheet is not particularly limited, but if it is too thick, uniaxial stretching becomes difficult, and in the rolling process, a large pressing force and take-off force are required to crush the polyolefin resin sheet with a rolling roll. It may be necessary and uniform rolling in the width direction may be difficult due to bending of the rolling roll, and conversely, if too thin, the thickness of the polyolefin resin sheet after uniaxial stretching or after rolling will be too thin and uniform. Since not only rolling becomes difficult, but the rolling rolls may come into contact with each other to shorten the life of the rolling roll, 0.2 to 15 mm is desirable.

  The stretched polyolefin resin sheet used in the present invention is a shape-retained stretched polyolefin resin sheet in which the polyolefin resin sheet having a weight average molecular weight of 100,000 to 500,000 is uniaxially stretched at a stretch ratio of 10 to 40 times. is there. As the uniaxial stretching method, any conventionally known method may be employed. Examples thereof include a roll uniaxial stretching method and a zone uniaxial stretching method in which stretching is performed while heating with a heater or hot air.

  Since uniaxial stretching is highly stretched by 10 to 40 times, a multi-stage uniaxial stretching method in which uniaxial stretching is repeated a plurality of times is preferable. When performing multistage uniaxial stretching, the number of stretching is preferably 2 to 20 times, more preferably 3 to 15 times, still more preferably 4 to 10 times.

  When performing multi-stage stretching by a roll uniaxial stretching method, it is desirable to install a feeding pinch roll, a take-up pinch roll, and at least one, preferably a plurality of contact rolls that rotate at a constant speed between these rolls. By installing such a contact roll, uniform stretchability is improved and stable stretch molding can be performed.

  The contact roll performs uniaxial stretching by applying a frictional force to the polyolefin resin sheet without being pinched. Further, the contact roll may be connected to the feeding roll and / or the take-up roll by a connecting member made of a gear, a chain, a pulley, a belt, or a combination thereof.

  The uniaxial stretching temperature cannot be uniformly stretched when it is low, and the sheet melts and cuts when it is high. Therefore, the range of “melting point−60 ° C.” to the melting point of the polyolefin resin of the polyolefin resin sheet to be stretched is more preferable, It is “melting point−50 ° C.” to “melting point−5 ° C.” of the polyolefin resin.

  Further, since the film is highly stretched at a stretching ratio of 10 to 40 times, it is preferably rolled prior to stretching. The rolling is preferably performed so that the rolling ratio is 5 times or more. Rolling is a method in which a polyolefin-based resin sheet is supplied to a pair of rolls rotating in opposite directions and pressed to reduce the thickness of the sheet and stretch, and the rolled sheet is different from the stretched sheet in that it is an olefin resin. Since it is dense without being oriented, it is highly stretchable.

  When the rolling temperature is lowered, uniform rolling cannot be performed, and when it is raised, the melt is cut. Therefore, the roll temperature during rolling is preferably in the range of “melting point−40 ° C.” to melting point of the olefin resin of the polyolefin resin sheet to be rolled. More preferably, it is “melting point−30 ° C.” to “melting point−5 ° C.” of the olefin resin. In the present invention, the melting point refers to the maximum point of the endothermic peak that accompanies melting of the crystal, which is recognized when thermal analysis is performed with a differential scanning calorimeter (DSC).

  If the applied pressure (linear pressure) applied to the polyolefin resin sheet by the rolling roll is too small, it may not be possible to obtain a predetermined rolling magnification, and conversely if it is too large, not only will the bending of the rolling roll occur, Sliding easily occurs between the rolling roll and the raw sheet, and uniform rolling may be difficult. Therefore, the applied pressure is preferably 100 MPa to 3000 MPa, and more preferably 300 MPa to 1000 MPa.

  When the rolling ratio is less than 5 times, the effect of suppressing necking at the time of uniaxial stretching performed later cannot be obtained, high-strength uniaxial stretching cannot be performed, or the uniaxial stretching step Therefore, it is 5 times or more, preferably 7 times or more. There is no particular upper limit to the rolling ratio, but the higher the rolling ratio is, the more load is applied to the rolling equipment, so 10 times or less is preferable.

  The rolling magnification is defined as (cross-sectional area of polyolefin resin sheet) / (cross-sectional area of polyolefin resin sheet after rolling), but the width of the polyolefin resin sheet hardly changes before and after rolling. (Thickness of resin sheet) / (thickness of polyolefin resin sheet after rolling).

  The rolled polyolefin resin sheet is then uniaxially stretched at a total stretch ratio of 10 to 40 times. As the uniaxial stretching method, any conventionally known method may be employed. Examples thereof include a roll uniaxial stretching method and a zone uniaxial stretching method in which stretching is performed while heating with a heater or hot air.

  Since the uniaxial stretching of the rolled polyolefin resin sheet is highly stretched by 10 to 40 times, a multistage uniaxial stretching method in which the uniaxial stretching is repeated a plurality of times is preferable. When performing multistage uniaxial stretching, the number of stretching is preferably 2 to 20 times, more preferably 3 to 15 times, still more preferably 4 to 10 times.

  When performing multi-stage stretching by a roll uniaxial stretching method, it is desirable to install a feeding pinch roll, a take-up pinch roll, and at least one, preferably a plurality of contact rolls that rotate at a constant speed between these rolls. By installing such a contact roll, uniform stretchability is improved and stable stretch molding can be performed.

  The contact roll performs uniaxial stretching by applying a frictional force to the polyolefin resin sheet without being pinched. Further, the contact roll may be connected to the feeding roll and / or the take-up roll by a connecting member made of a gear, a chain, a pulley, a belt, or a combination thereof.

  The uniaxial stretching temperature cannot be uniformly stretched when it is low, and the sheet melts and cuts when it is high. Therefore, the range of “melting point−60 ° C.” to the melting point of the polyolefin resin of the polyolefin resin sheet to be stretched is more preferable, It is “melting point−50 ° C.” to “melting point−5 ° C.” of the polyolefin resin.

  Moreover, since the total draw ratio is 10 to 40 times, the uniaxial draw ratio may be determined so that the total draw ratio is within this range in consideration of the rolling ratio. Is not improved, it is preferably 1.3 times or more, more preferably 1.5 times or more, and still more preferably 1.8 times or more. Moreover, although an upper limit is not specifically limited, 4 times or less are preferable, More preferably, it is 3.5 times or less. The total draw ratio is a value obtained by multiplying the rolling ratio and the uniaxial draw ratio.

  In order to improve the dimensional stability of the stretched polyolefin resin sheet, the stretched polyolefin resin sheet may be annealed at a temperature of the melting point of the polyolefin resin from “melting point−60 ° C.” to the melting temperature or lower.

  If the annealing temperature is lowered, the dimensional stability will not improve, warping will occur if used for a long time, and if it is raised, the polyolefin resin will dissolve and the orientation will disappear and the tensile modulus, tensile strength, etc. will decrease. It is preferable that the resin be annealed at a temperature ranging from “melting point −60 ° C.” to the melting point and below the rolling temperature.

  Annealing is a heat treatment in the production line. When annealing, the stretched polyolefin resin sheet is stretched if a large tension is applied, and it is not stretched or shrinks in a very small state. The length of the stretched polyolefin resin sheet in the stretching direction is preferably kept substantially unchanged, and it is preferable that no pressure is applied to the stretched polyolefin resin sheet. That is, it is preferable that the annealed stretched polyolefin resin sheet is annealed so that the length of the stretched polyolefin resin sheet before annealing is 1.0 or less.

  Accordingly, when the stretched polyolefin resin sheet is continuously annealed while being moved in the heating chamber with a roll such as a pinch roll, the feed rate ratio of the polyolefin resin sheet on the inlet side and the outlet side is 1.0 or less. It is preferable to anneal with setting.

  The heating method at the time of annealing is not particularly limited, and examples thereof include a method of heating with hot air, a heater, a heating plate, hot water or the like. The time for annealing is not particularly limited, and varies depending on the thickness of the stretched polyolefin resin sheet and the annealing temperature, but is generally preferably 10 seconds or more, more preferably 30 seconds to 60 minutes, and still more preferably 1 to 20 Minutes.

  The annealed polyolefin resin sheet may be further aged in a temperature range from 40 ° C. to the melting point of the polyolefin resin. The dimensional stability of the polyolefin resin sheet annealed by aging becomes more excellent.

  Aging is not a continuous treatment in the production line, but it is a relatively long time (minutes, time units) for heat treatment of single-wafers, scrolls, etc., once processed, such as cut winding, of a stretched polyolefin resin sheet. It means to lay down carefully and heat-treat.

  The aging temperature is the same as that left at room temperature when the temperature is low, and when it is high, it is thermally deformed, so the temperature range is from 40 ° C. to the melting point of the polyolefin resin, and the aging time is not effective in a short time and is too long. Even if an effect does not increase, 12 hours-7 days are preferable.

  The stretched polyolefin resin sheet is a sheet in which a polyolefin resin sheet having a weight average molecular weight of 100,000 to 500,000 is uniaxially stretched at a stretching ratio of 10 to 40 times, or after being rolled at a rolling ratio of 5 times or more, The sheet is uniaxially stretched at a stretching ratio of 10 to 40 times and has shape retainability, but the shape retainability is obtained by bending the stretched polyolefin resin sheet at 180 degrees and 90 degrees and retaining it for 1 minute. It is preferable that the folding return angle θ is less than 20 degrees when 5 minutes have passed after the release, more preferably, the 180 degree folding return angle θ is less than 20 degrees and the 90 degree folding return angle θ. Is less than 20 degrees, more preferably the 180-degree folding return angle θ is 20 degrees or less and the 90-degree folding return angle θ is 15 degrees or less. If one of the 180 ° and 90 ° folding return angles θ, particularly the 180 ° folding return angle θ exceeds 20 °, sufficient shape retention may not be obtained.

  Although the width | variety and thickness of the said extending | stretching polyolefin-type resin sheet are not specifically limited, Generally, a width | variety is 5 mm-10 cm, and thickness is 5-2000 micrometers, Preferably it is 100-1000 micrometers. In order to improve mechanical strength, it is preferable that a plurality of thin stretched polyolefin resin sheets are laminated. When laminating, it is preferable to laminate 2 to 10 layers of stretched polyolefin resin sheets of 50 to 600 μm, more preferably 2 to 8 layers.

  Since it becomes easy to crack when the uniaxial stretching direction of the stretched polyolefin resin sheet is aligned, in order to make it difficult to break, at least one stretched polyolefin resin sheet crosses the uniaxial stretching direction of another stretched polyolefin resin sheet. The crossing angle is preferably 30 to 90 degrees. In particular, it is preferable to laminate a plurality of stretched polyolefin resin sheets so as to intersect each other by 30 to 90 degrees with the uniaxial stretching direction of adjacent stretched polyolefin resin sheets.

  As a method of laminating a plurality of stretched polyolefin resin sheets, any conventionally known method may be employed. For example, a method of bonding with a hot melt adhesive such as polyester, polyolefin, or urethane, a reactive adhesive And a method of bonding with an adhesive such as an epoxy adhesive, a urethane adhesive, a polyester adhesive, or a rubber adhesive.

  In the card holder for the merchandise display shelf of the present invention, a card holding portion is formed at one end portion of the stretched polyolefin resin sheet, and a fixing portion to the merchandise display shelf is formed at the other end portion.

  The card holding part is not particularly limited as long as it has a structure that can hold a card describing a product name, product cost, other promotional data, etc., but an adhesive layer is laminated on one end of the stretched polyolefin resin sheet. Preferably it is formed. Also, it has a U-shaped cross section and has a front wall and a rear wall, and a holding member, clip, clothespin-shaped holding member, etc. that can hold a card inserted between the front wall and the rear wall The card holding portion may be formed by being fixed to one end portion of the polyolefin resin sheet.

  The fixing part is not particularly limited as long as it is a structure that can fix the stretched polyolefin resin sheet to the commodity display shelf, but is formed by laminating an adhesive layer on one end of the stretched polyolefin resin sheet or the adhesive layer is It is preferable that a laminated plate-like substrate such as a vinyl chloride resin, a polyethylene resin, a polypropylene resin, a polyester resin, or a polycarbonate resin is bonded.

  Also, a magnet, magic mending tape, suction cup, U-shaped cross-section, and a fixing member that has a front wall and a rear wall and can be inserted and fixed between a front wall and a rear wall of a product display shelf Further, a fixing part may be formed by fixing a clip, a clothespin-shaped fixing member or the like to one end of the stretched polyolefin resin sheet.

  The pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer is not particularly limited as long as it is a commonly used pressure-sensitive adhesive, and examples thereof include rubber-based, acrylic-based, urethane-based, and silicon-based pressure-sensitive adhesives. It may be a tape.

  The structure of the card holder of the merchandise display shelf of the present invention is as described above, and protrudes from the front of the merchandise display shelf and faces the arbitrary direction, describing the merchandise name, merchandise cost, other promotional data, etc. Cards can be installed, and after installation, the card orientation can be changed and fixed in that direction. In addition, since it swings with a slight wind in the room, it looks good and is conspicuous, so the sales promotion effect is excellent.

Next, examples of the present invention will be described with reference to the drawings, but the present invention is not limited to the following examples.
(Example 1)
FIG. 1 is a cross-sectional view showing an example of a card holder for a merchandise display shelf according to the present invention. In the figure, 1 is a stretched polyolefin resin sheet, and 2 is a card holding portion in which an acrylic pressure-sensitive adhesive layer having a thickness of 40 μm is laminated on one end of the stretched polyolefin resin sheet 1. 4 is a vinyl chloride resin plate having a thickness of 0.2 mm, and is laminated on the other end of the stretched polyolefin resin sheet 1 by a urethane adhesive layer 3 having a thickness of 20 μm. On the other side, an acrylic adhesive layer 5 having a thickness of 40 μm is laminated to form a fixing portion. The urethane adhesive has a higher adhesive strength than the acrylic adhesive, and the acrylic adhesive layer is peeled off when the fixing portion is peeled from the commodity display shelf.

The method for producing the stretched polyolefin resin sheet 1 was as follows.
A high-density polyethylene resin (manufactured by Nippon Polychem Co., Ltd.) having a weight average molecular weight (Mw) of 330,000 and a melting point of 135 ° C. is supplied to the same-direction twin-screw kneading extruder (manufactured by Plastic Engineering Laboratory) and melt-kneaded at a resin temperature of 200 ° C. After that, the melt-kneaded product was formed into a sheet having a width of 330 mm and a thickness of 3.1 mm by a calender molding machine controlled at a roll temperature of 110 ° C. to obtain a polyethylene resin sheet.

  The obtained polyethylene resin sheet was rolled at a rolling magnification of 11.5 times using a rolling molding machine (manufactured by Sekisui Koki Co., Ltd.) heated to 125 ° C. to obtain a rolled polyethylene resin sheet having a width of 330 mm and a thickness of 270 μm. The obtained rolled polyethylene resin sheet was subjected to 1.8 times multi-stage stretching with a hot-air heating type multi-stage stretching apparatus (manufactured by Kyowa Engineering) heated to 110 ° C., and the total draw ratio was 20.7 times, width 260 mm, thickness A stretched polyethylene resin sheet having a thickness of 190 μm was obtained.

  The obtained stretched polyethylene resin sheet was supplied with a pinch roll to a hot air heating tank with a line length of 19.25 m set at 125 ° C. at an inlet speed of 2.75 m / min, and an outlet speed of 2.75 m / min. Set to, and then subjected to primary annealing for 7 minutes, followed by secondary annealing in the same manner to obtain an annealed stretched polyethylene resin sheet, which is then fed to a constant temperature bath at 60 ° C. and aged for 24 hours, An aged stretched polyethylene resin sheet was obtained. The obtained stretched polyethylene resin sheet was used after being cut into a width of 1 cm and a length of 15 cm. The obtained stretched polyethylene resin sheet was bent at 180 degrees and 90 degrees and held for 1 minute and then released, and the folding return angle θ after 5 minutes from the release was 5 degrees and 8 degrees, respectively.

It is sectional drawing which shows an example of the card holder of the goods display shelf of this invention. It is sectional drawing which shows an example of the card holder of the conventional goods display shelf. It is sectional drawing which shows the state which affixed the card holder of the conventional goods display shelf on the goods display shelf.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stretched polyolefin resin sheet 2 Acrylic adhesive layer 3 Urethane adhesive layer 4 Vinyl chloride resin board 5 Acrylic adhesive layer 6 Card 7 Merchandise display shelf

Claims (5)

  A card holding part is formed at one end of a polyolefin resin sheet having a weight average molecular weight of 100,000 to 500,000 uniaxially stretched at a stretch ratio of 10 to 40 times, and the other end part. A card holder for a merchandise display shelf, wherein a fixing portion to the merchandise display shelf is formed on the card display shelf.   A stretched polyolefin resin sheet is obtained by rolling a polyolefin resin sheet having a weight average molecular weight of 100,000 to 500,000 to a rolling ratio of 5 times or more and then uniaxially stretching the total stretching ratio to 10 to 40 times. The card holder for a merchandise display shelf according to claim 1, wherein the card holder is a sheet.   The stretched polyolefin resin sheet is bent at 180 degrees and 90 degrees and held for 1 minute and then released, and the folding return angle θ when 5 minutes have elapsed after release is both 20 degrees or less. Item 3. A card holder for a commodity display shelf according to item 1 or 2.   4. A card holder for a merchandise display shelf according to claim 1, wherein the card holder is formed by laminating an adhesive layer on one end of the stretched polyolefin resin sheet.   5. A card holder for a merchandise display shelf according to claim 1, wherein the fixing part is a plate-like base material on which an adhesive layer is laminated.

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