JP4952370B2 - Lid material - Google Patents

Description

  The present invention relates to a lid member for sealing an opening of a container, and more particularly to a lid member having a hot water draining function for discharging hot water poured into a container body.

Conventionally, lid materials used for containers for storing instant foods etc. are made of a laminated material in which a paper layer is used as a base material and a gas barrier layer and a sealant layer having a low temperature sealing property are laminated on one surface of the base material. Many things are used. In general, instant miso soup and instant ramen are often poured into a container before eating, and the contents are often eaten as they are after a few minutes. After that, drain the used hot water out of the container before eating. There are various methods for discharging the hot water after use to the outside of the container, but the temperature of the poured hot water is not lowered, and after the contents are loosened, the hot water can be discharged out of the container efficiently. There has been proposed a lid member provided with two pull tabs for a pouring gate and a hot water outlet that project outward on the outer peripheral edge of a lid member made of a laminated material having a release layer in a laminated structure (for example, Patent Document 1). reference.).
Japanese Patent Laid-Open No. 2000-229664

  However, since the proposed lid material is provided with two pull tabs for the hot water outlet and the hot water outlet that protrude outward on the outer peripheral edge, when the hot water is poured for the first time, it is mistaken for the hot water outlet. There was a problem that the pull tab was temporarily opened, or because it was a special shape having two pull tabs, there was no versatility, and the automatic filling and packaging line had to be modified.

  An object of the present invention is to provide a lid material capable of easily obtaining a pouring hole and a hot water cutting hole for discharging hot water even in a versatile shape having a pull tab at one location on the outer peripheral edge. It is in.

  In the invention according to claim 1 of the present invention, an opening pull tab protruding outward is provided on the outer peripheral edge of the lid body, and the upper lid portion and the lower lid portion are peeled at a position facing the opening pull tab. An upper lid for separating the upper lid portion and the lower lid portion along a line within a region having the peeling varnish layer, wherein a partial peeling varnish layer of a predetermined shape is provided in contact with the outer peripheral edge of the lid body portion A cover material in which a cut line penetrating only the portion is provided in the vicinity of the periphery, and a plurality of hot water cutting holes are provided in the lower lid portion in the region having the peeling varnish layer, to the container flange portion At the time of heat sealing, the part located on the container flange part of the region having the peeling varnish layer of the lid material body part is separated into two layers, and the upper lid picking part for starting separation into the upper lid part and the lower lid part on the upper side It is a lid | cover material characterized by being formed.

  The invention according to claim 2 of the present invention is the invention according to claim 1, wherein the portion of the hot water cut-off hole defined by a closed notch formed through the lower lid portion is the upper lid portion. It is a lid material formed by being removed along with peeling.

  The invention according to claim 3 of the present invention is the lid material according to the invention according to claim 1, wherein the hot water cutting hole is formed in a predetermined shape through the lower lid portion.

  The lid material of the present invention is provided with an opening pull tab that protrudes outward on the outer peripheral edge of the lid material main body portion, and has a predetermined shape for peeling into an upper lid portion and a lower lid portion at a position facing the opening pull tab. A partial peeling varnish layer is provided in contact with the outer peripheral edge of the lid body portion, and penetrates only the upper lid portion for separating the upper lid portion and the lower lid portion along the line within the region having the peeling varnish layer. A cover material in which a plurality of hot water cutting holes are provided in the lower lid portion in the region having the peeling varnish layer, and is provided at the time of heat sealing to the container flange portion. The portion located on the container flange portion of the region having the peeling varnish layer of the lid material main body portion is separated into two layers, and an upper lid knob portion for starting separation into an upper lid portion and a lower lid portion is formed on the upper side, By a closed cut of a predetermined shape formed by a hot water cutting hole penetrating the lower lid part The drawn portion is formed by being removed along with the peeling of the upper lid portion, or is formed in a predetermined shape so as to penetrate the lower lid portion. Sometimes it can be opened and poured without error, and when the upper lid is peeled off from the upper lid knob formed on the lid when the container flange is heated and sealed, a hot water cut-off hole is easily formed in the lower lid. It can be made to appear and the hot water inside can be discharged.

  The lid material of the present invention will be described in detail below along the embodiment. Fig.6 (a) is a sectional side view which shows one Embodiment of the laminated material used for the cover material of this invention, and a laminated material (100) is a paper layer (101) and a sealing layer (in order of thickness direction) in order. 102), a release varnish layer (103), an adhesive resin layer (104), a gas barrier layer (105), and a sealant layer (106) are laminated, and (b) is a laminated material used for the lid material of the present invention. It is a figure which shows other embodiment, It is a sectional side view of the part which has a hot-water cutting hole, Laminating material (100 ') is an outer surface film layer (108), an adhesive resin layer (104), The release varnish layer (103 ′), the sealing layer (102), the paper layer (101), the adhesive layer (107), the gas barrier layer (105), and the sealant layer (106) are laminated. Predetermined shape from (106) to release varnish layer (103 ') In penetrating water cut holes (25, 26, 27) are provided.

The paper layer (101) is made of paper having a basis weight of 80 to 120 g / m ² .

  The sealing layer (102) is formed by a known gravure coating method or roll coating method using a sealing coating agent mainly composed of a resin such as a polyamide resin or a cellulose resin, and the coating amount is a paper used. Select as appropriate depending on the type.

  The release varnish layer (103, 103 ′) is made of a release coating agent mainly composed of a wax or a polyamide resin having a softening point of 120 ° C. or lower, and a lamination method is known using the release coating agent. Partially apply by the coating method. The coating amount is appropriately selected depending on the type of release coating agent.

  The resin used for the adhesive resin layer (104) is not particularly limited as long as it is an adhesive resin. For example, polyethylene, ethylene / acrylic acid copolymer, ethylene / methyl methacrylate copolymer, ethylene / methyl Resins such as acrylate copolymers and ethylene / ethyl acrylate copolymers are used. The thickness is preferably in the range of 20 to 60 μm in order to adjust the dead hold property of the lid.

  For the gas barrier layer (105), an aluminum foil having a thickness of 10 to 30 μm, or a vapor deposited film on which an inorganic oxide such as aluminum metal, silicon oxide, or aluminum oxide is deposited is used. A biaxially stretched polypropylene film, a biaxially stretched nylon film, or a biaxially stretched polyester film is used as the base film of the vapor deposition film.

The sealant layer (106) can be heat-sealed to the container flange, and preferably has an easy peel property when opened. For example, a mixture of polyethylene and polystyrene polymer alloy or ethylene / vinyl acetate copolymer resin mixed with wax In the case of a polymer alloy, it is laminated by a known melt extrusion coating method, and in the case of a coating agent, it is applied and laminated by a known gravure coating method. The thickness is preferably in the range of 10 to 60 μm.

For the adhesive layer (107), a two-component curable polyurethane adhesive mainly composed of polyester polyol or polyether polyol is mainly used, and is formed by coating by a known gravure coating method or the like. The coating amount is desirably about 1 to 5 g / m ² (dry state).

  The outer film layer (108) is not particularly limited as long as it has heat resistance, but a biaxially stretched polyester film is preferable.

  Fig.1 (a) is a top view which shows one Embodiment of the cover material of this invention, The cover material (1) consists of the said laminated material (100), and the outer periphery of a cover body main-body part (2) An opening pull tab (3) protruding outward is provided, and a partial release varnish layer (103) for peeling the upper cover portion and the lower cover portion is provided at a position facing the pull pull tab (3). It is provided in contact with the outer peripheral edge of the lid main body (2) and penetrates only the upper lid for separating the upper lid and the lower lid along the line in the region having the peeling varnish layer (103). The two cut lines (30, 31) are provided in the vicinity of the periphery, and are closed in a round shape that penetrates the lower cover in the lower cover in the region having the release varnish layer (103). Hot water cutting holes (20, 21, 22, 23, 24) partitioned by (10, 11, 12, 13, 14) (B) is a cross-sectional view taken along the line AA ′ of (a), and the cut lines (30, 31) are provided penetrating from the paper layer (101) to the release varnish layer (103). The notches (10, 11) are provided so as to penetrate from the sealant layer (106) to the adhesive resin layer (104).

  FIG. 2A is a plan view showing another embodiment of the lid material of the present invention. The lid material (1 ′) is made of the laminated material (100 ′), and the lid material main body (2 ′). Is provided with an opening pull tab (3 ') projecting outward on the outer peripheral edge, and is partially peeled off at the position facing the opening pull tab (3') to separate the upper lid portion and the lower lid portion. A varnish layer (103 ′) is provided in contact with the outer peripheral edge of the lid main body (2 ′), and the upper and lower lids are formed along a line within the region having the release varnish layer (103 ′). A single cut line (32) penetrating only the upper lid portion for separation is provided in the vicinity of the periphery, and the lower lid portion is attached to the lower lid portion in the region having the peeling varnish layer (103 ′). There are three round hot water cut holes (25, 26, 27) provided, and (b) is a cross-sectional view taken along line AA ′ of (a). The cut line (32) is engraved through the outer film layer (108) to the adhesive resin layer (104), and the hot water cut holes (25, 26, 27) are separated from the sealant layer (106). A hole is formed through the layer (103 ').

  The cut lines (30, 31, 32) may be perforation lines or half cut lines.

  FIG. 3 is a perspective view showing a state in which an upper lid knob portion is formed on the lid material according to the embodiment of the present invention, and the lid material (1) is used to seal the sealing region (2a) of the lid body portion (2). When the container flange part (41) is heated and pressure-sealed from above, a part of the peeling varnish located on the container flange part (41) in the region having the peeling varnish layer (103) of the lid body part (2) The components of the layer are melted and separated into two layers, and an upper lid knob (4a) is formed on the upper side. As described above, the reason why the two layers are separated at the time of heating and pressure sealing will be described below. Generally, the lid material based on the paper layer is heated at the time of sealing at the time of heating and pressure sealing. And the moisture content of the paper being used may cause a phenomenon that the moisture content evaporates and becomes easily peeled between the layers. Further, the weaker the adhesive strength between the layers, the easier it is to peel off. The release varnish layer is originally set to have a weak adhesive strength, but because it contains many components with low melting points, the resin melts when heated, resulting in a weaker adhesive strength and easy peeling from the release varnish layer. Become. Therefore, if there is a peeling varnish layer at the position to be heated and pressure sealed, heat is also applied to that position, and the adhesive strength is further weakened, so that the layers can be easily peeled off. The lid (1 ′) is also formed with an upper lid knob in the same state, but is not shown.

  FIG. 4 is a view for explaining an upper lid portion and a lower lid portion of the lid material according to the embodiment of the present invention, and shows a state after the upper lid portion (4) and the lower lid portion (5) are peeled off. The portion defined by the round closed cuts (11, 13, 14) as the upper cover part (4) is peeled off along the cut lines (30, 31) from the upper lid picking part (4a) The adhesive resin layer (104), the gas barrier layer (105), and the sealant layer (106) are removed from the lower lid (5) in a state where they are adhered to the peeled varnish layer (103) of the peeled upper lid (4). As a result, round hot water cutting holes (21, 23, 24) penetrating the lower lid part (5) are formed.

  FIG. 5 is a view for explaining an upper lid portion and a lower lid portion of a lid material according to another embodiment of the present invention, and a state after the upper lid portion (4 ′) and the lower lid portion (5 ′) are peeled off. As the upper lid part (4 ') is peeled off from the upper lid picking part (4a') along the cut line (32), it penetrates into the round shape provided in the lower lid part (5 '). The hot water cut hole (25, 26, 27) appears.

  As described above, the lid material of the present invention is provided with only one opening pull tab on the outer peripheral edge of the lid material main body, so that it is versatile and can be used without mistakes even when pouring hot water. From the upper lid picking part formed when heat-sealing to the container flange part, if the upper lid part is peeled off along the cut line, a hot water cutting hole appears in the lower lid part, It has the feature that the hot water can be discharged from the hot water hole.

(A) is a top view which shows one Embodiment of the cover material of this invention, (b) is the sectional view on the AA 'line of (a). (A) It is a top view which shows other embodiment of the cover material of this invention, (b) is the sectional view on the AA 'line of (a). It is a perspective view which shows the state in which the upper cover knob part of the cover material of one Embodiment of this invention was formed. It is a figure for demonstrating the upper cover part and lower cover part of the cover material of one Embodiment of this invention. It is a figure for demonstrating the upper cover part and lower cover part of the cover material of other embodiment of this invention. (A) is side sectional drawing which shows one Embodiment of the laminated material used for the cover material of this invention, (b) is a figure which shows other embodiment of a laminated material, and the side of the part which has a hot water cut-out hole It is sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1 '... Cover material 2, 2' ... Cover material main-body part 2a, 2a '... Sealing area | region 3, 3' ... Opening pull tab 4, 4 '... Upper cover part 4a, 4a' ... Upper cover knob part 5, 5 ' ... Lower lid part 10, 11, 12, 13, 14 ... Cuts 20, 21, 22, 23, 24, 25, 26, 27 ... Hot water cut holes 30, 31, 32 ... Cut line 40 ... Container body 41 ... Container flange Part 50: Space 100, 100 '... Laminate material 101 ... Paper layer 102 ... Sealing layer 103, 103' ... Release varnish layer 104 ... Adhesive resin layer 105 ... Gas barrier layer 106 ... Sealant layer 107 ... Adhesive layer 108 ... Outer surface film layer

Claims (3)

  An opening pull tab that protrudes outward is provided on the outer peripheral edge of the lid body, and a partial peeling varnish layer having a predetermined shape for peeling the upper lid portion and the lower lid portion at a position facing the opening pull tab. Is provided in contact with the outer peripheral edge of the lid body portion, and a cut line that penetrates only the upper lid portion for separating the upper lid portion and the lower lid portion along the line in the region having the peeling varnish layer is adjacent to the periphery. The lid material is provided with a plurality of hot water cutting holes in the lower lid portion in the region having the peeling varnish layer, and peeling the lid body portion at the time of heat sealing to the container flange portion. A lid material characterized in that a portion located on a container flange portion of a region having a varnish layer is separated into two layers, and an upper lid knob portion for starting separation into an upper lid portion and a lower lid portion is formed on the upper side.   The portion defined by a closed cut of a predetermined shape formed by penetrating the hot water cut-through hole in the lower lid portion is formed by being removed along with peeling of the upper lid portion. The cover material according to 1.   The lid material according to claim 1, wherein the hot water cutting hole is formed in a predetermined shape so as to penetrate the lower lid portion.

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