JP6748124B2 - cartridge - Google Patents

Description

The present invention relates to an electronic cigarette cartridge using a tobacco plant or a non-tobacco plant and a supporting member thereof.

In recent years, electronic cigarette products for enjoying cigarettes have become popular by heating a cartridge containing tobacco components and sucking vaporized tobacco components without using a flame in order to match the smoking cessation tendency of cigarettes. It has begun (for example, refer to Patent Document 1 below).

In the electronic cigarette of Patent Document 1, a heating element is inserted into the aerosol-forming substrate of the cartridge to heat the aerosol-forming substrate to generate an aerosol containing a tobacco component. The cartridge has a hollow tubular support element that supports the aerosol-forming substrate, the support element resisting the force the cartridge experiences when the heating element is inserted into the aerosol-forming substrate. The tobacco component released from the aerosol-forming substrate by heating is transferred through the hollow portion of the support element to the mouthpiece located downstream and is inhaled by the user.

Patent No. 6000451

However, in the electronic cigarette of the reference document 1, since the support element is a hollow tube, when the heating element is inserted into the aerosol-forming base material, the central part of the aerosol-forming base material cannot be supported and the support element is filled. Objects may pop out.

The present invention has been made to solve the problems associated with the above-mentioned conventional techniques, and while ensuring a flow path through which the aerosol is transferred in the electronic cigarette cartridge, stabilizes the aerosol-forming substrate during insertion of the heating element. It is an object of the present invention to provide a support member that can be supported by the.

MEANS TO SOLVE THE PROBLEM This invention for achieving the said objective is the support member for the electronic cigarette cartridge using a tobacco plant or a non-tobacco plant. The support member has a central portion located along the central axis in the longitudinal direction of the electronic cigarette cartridge, and a side portion that extends outward from the central portion and contacts the packaging member located at the peripheral edge of the electronic cigarette cartridge, And is disposed adjacent to the aerosol-forming base material located at one end of the electronic cigarette cartridge or with another member sandwiched between the aerosol-forming base material and the aerosol-forming base material, and supports the aerosol-forming base material. ..

Further, the present invention for achieving the above object is an electronic cigarette cartridge using a tobacco plant or a non-tobacco plant, which has the aerosol-forming substrate and the support member.

According to the present invention, since a space is formed between the central portion of the support member and the inner surface of the packaging member that covers the support member, heating the aerosol-forming base material while ensuring a flow path through which the aerosol is transferred. The core can stably support the aerosol-forming substrate during insertion of the element.

It is a schematic perspective view which illustrates the external appearance of the electronic cigarette cartridge which concerns on embodiment of this invention. FIG. 1A is a cross-sectional view showing an example of an electronic cigarette cartridge taken along the line AA in FIG. 1, and FIG. 1B is another sectional view showing the electronic cigarette cartridge taken along the line AA in FIG. It is sectional drawing which shows an example. It is a figure which illustrates the filler of the aerosol formation base material shown in FIG. 2(A). FIG. 6 is a cross-sectional view illustrating an electronic cigarette cartridge and a heating element. It is the top view which looked at the support member of Example 1 from the X direction of FIG. 2(A). It is the side view which looked at the support member of Example 1 from the Y direction of FIG. 2(A). FIG. 8 is a plan view of the support member of Example 2 viewed from the X direction in FIG. 2(A). It is the side view which looked at the support member of Example 2 from the Y direction of FIG. 2(A). It is the top view which looked at the support member of Example 3 from the X direction of FIG. 2(A). It is the side view which looked at the support member of Example 3 from the Y direction of FIG. 2(A). It is the side view which looked at the support member of Example 3 from the Z direction of FIG. 2(A). It is the top view which looked at the support member of Example 4 from the X direction of FIG. 2(A). It is the side view which looked at the support member of Example 4 from the Y direction of FIG. 2(A). It is the side view which looked at the support member of Example 4 from the Z direction of FIG. 2(A).

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals are used for the same members. Further, the dimensional ratios in the drawings are exaggerated for convenience of description, and may differ from the actual ratios.

FIG. 1 is a schematic perspective view illustrating the appearance of an electronic cigarette cartridge according to an embodiment of the present invention. 2A is a sectional view of the electronic cigarette cartridge taken along the line AA of FIG. 1, and FIG. 2B is an electronic cigarette cartridge cut along the line AA of FIG. It is sectional drawing which shows the other example. Further, FIG. 3 is a diagram illustrating a filling material of the aerosol-forming substrate illustrated in FIG. 2A, and FIG. 4 is a cross-sectional view illustrating an electronic cigarette cartridge and a heating element.

<Electronic Cigarette Cartridge 100> As shown in FIGS. 1 and 2A and 2B, the electronic cigarette cartridge 100 includes an aerosol-forming substrate 110, a support member 120, and a cooling member 130 (illustrated in FIG. 2B). If it does), it has a mouthpiece 140 and a packaging member 150. The electronic cigarette cartridge 100 has, for example, a rod shape or a cylindrical shape.

The aerosol-forming base material 110 generates an aerosol by heating. In this embodiment, the aerosol may include a non-tobacco plant-derived aroma component. As shown in FIGS. 2A and 2B, the aerosol-forming substrate 110, the support member 120, the cooling member 130 (in the case illustrated in FIG. 2B) and the mouthpiece 140 are arranged in this order in the X direction. They are arranged and packaged by the packaging member 150. The packaging member 150 includes, for example, paper.

<Aerosol forming substrate 110> The aerosol forming substrate 110 may include at least one of a solid compound and a liquid compound. The aerosol-forming substrate 110 may include an aerosol-forming material that includes tobacco. In addition, the aerosol-forming substrate 110 may further include an aerosol former including glycerin and propylene glycol. When the aerosol-forming base material 110 is solid, it can take the form of, for example, a rod, a strip, a powder, a granule, a pellet, a piece, a sheet, a fiber, a porous or a block. .. The aerosol-forming base material 110 is collected in a predetermined amount or a predetermined number in any of the above-described forms, and is filled in one end portion of the electronic cigarette cartridge 100. As shown in FIG. 3, for example, the aerosol-forming substrate 110 is arranged at one end of the electronic cigarette cartridge 100 in a state where a predetermined number of rod-shaped fillers 111 are bundled.

The material of the filling material 111 may include tobacco leaf, tobacco stem, expanded tobacco, and/or homogenized tobacco. Further, the material of the filler 111 may include non-tobacco plants, that is, plants other than tobacco. Examples of the use part of the plant include roots (including bulbs (bulbs), tubers (potatos), bulbs, etc.), stems, skins (including stem bark, bark, etc.), leaves, flowers (petals, pistil, Including stamens), including various parts such as tree trunks and branches.

Plants that can be used include, for example, beech seeds, kobu mandarin leaves, myoga, wormwood, wasabi, ajowan seed, anise, alfalfa, echinacea, shallot, estragon, everlasting as plants used as herbs and spices. Flower, Elder, Allspice, Oris root, Oregano, Orange peel, Orange flower, Orange leaf, Cayenne chili pepper (Cayenne chili pepper), Chamomile German, Chamomile roman, Cardamom, Curry leaf, Garlic (garlic), Crab top, Chara Way, caraway seed, oyster worm, cumin, cumin seed, clove, green cardamom, green pepper, cornflower, saffron, cedar, cinnamon, jasmine, juniper berry, jolochia, ginger (ginger), star anise, spearmint, smack, sage, Seboli (savory), celery, celery seeds, turmeric (turmeric), thyme, tamarind, tarragon, cherville (selfeuille), chives, dill, dill seeds, tomatoes (dried tomatoes), tonka beans, dried pakchi, nutmeg, hibiscus, habanero , Jalapeno, Birdseye, Basil, Vanilla, Pakchi (Coriander), Parsley, Paprika, Hyssop, Pimentes des Pellet, Pink pepper, Fenugreek seed, Fennel, Brown mustard, Black cardamom, Black cumin, Black pepper, Vetiver, Penny royal, Peppermint (mint), horseradish, white pepper, white mustard, poppy seed, porcini, marjoram, mustard seed, maniguet, marigold, malva flower, mace, yellow flower, eucalyptus, lavender, licorice, linden, red clover, red pepper. , Lemongrass, lemon verbena, lemon balm, lemon peel, rose (rose), rosebuds (purple), rose hips, rose petal, rosemary, rose red, laurel (laurier), long pepper, sesame (fresh sesame, roasted sesame) You can use golden pepper, pepper (Huajao), Mitaka, Japanese pepper, pepper, citron and so on. In addition, mixed spices (for example, five-flavored powder, garam masala, ras el hanuto, baligur, chicken curry masala, tandoori masala, cattle epis, erb de provence) and mixtures of various plants used as potpourri and the like can be mentioned.

Particularly, leaves of wormwood, lemon, sandalwood, peppermint, basil and the like can be preferably used. For peaches, blueberries, lemons, oranges, apples, bananas, pineapples, mangos, grapes, plums, almonds, cacao, coffee beans, peanuts, sunflowers, olives, walnuts, and other nuts, fruits (including seeds) are suitable. Can be used.

In addition, flowers such as pearl oyster, jasmine, hibiscus, rose, lavender, and rose hip can be preferably used. In addition, sandalwood, ginger, vetiver and the like can preferably use the root. Further, for sugar cane, pine, cedar, hiba, camellia, sandalwood, cypress, cinnamon, etc., the trunk or skin can be preferably used.

Also, teas can be used. Teas not only have different plants that become tea, but even the same plant has different teas depending on the processing method. As teas, in addition to black tea and green tea, for example, tomorrow leaf tea, sweet tea, armchair tea, aloe tea, ginkgo leaf tea, oolong tea, turmeric tea, vaginal tea, eleuthero tea, plantain tea, oyster tea, persimmon leaf Tea, chamomile tea, chamomile tea, Kawahara Kyomei tea, karin tea, chrysanthemum tea, Gymnema tea, guava tea, wolfberry tea, mulberry leaf tea, black soybean tea, gennoshoko tea, brown rice tea, burdock tea, comfrey tea, kelp tea Tea, cherry tea, saffron tea, shiitake tea, shiso tea, jasmine tea, ginger tea, horsetail tea, broom tea, senburi tea, buckwheat tea, taranoki tea, dandelion tea, horse chestnut, dokudami tea, morichu tea, natame tea, elderberry tea Including tea, mouse tea, mulberry tea, hub tea, loquat leaf tea, puer tea, safflower tea, pine needle tea, mate tea, barley tea, megusurinocha, mugwort tea, eucalyptus tea, Rakan fruit tea and rooibos tea. For these teas, tea leaves after drinking may be used. If you use tea leaves, you can reuse expensive tea and make effective use of it.

In addition to these, for example, by-products and squeezes (sake lees, squeeze of grapes (consisting of grape skins and seeds, fruit axes, etc.)) and sugar cane molasses when producing fermented sake such as sake and wine You can also use squeezed residue. Furthermore, you may mix and use the various plants mentioned above. Of course, plants other than those listed here can also be used.

The aerosol-forming substrate 110 is manufactured, for example, by powdering the above-mentioned material, mixing it with glycerin or oil, kneading it, and then making it into a rod shape and drying it. Alternatively, it is manufactured by forming a paste containing water without drying.

As shown in FIG. 3, when the filling material 111 manufactured as the aerosol-forming base material 110 has a shape such as a rod shape or a strip shape, the longitudinal direction of the shape of the filling material 111 is X-direction when filling. It will be packed along with. This stabilizes the air flow and makes it easier for the user to inhale the fragrance component from the aerosol-forming substrate 110.

Note that FIG. 3 is a view seen from the end on the side where the aerosol-forming substrate 110 of the electronic cigarette cartridge 100 is present, and is a partial perspective view so that the filler 111 inside the electronic cigarette cartridge 100 can be seen. Of course, in addition to this, a flat plate-shaped packing may be rolled and packed, or a small piece-shaped packing may be packed randomly.

As shown in FIG. 4, the electronic cigarette cartridge 100 is mounted on the electronic cigarette body 200 when used by a user. The electronic cigarette body 200 is provided with an insertion portion 210 for inserting the electronic cigarette cartridge 100.

Furthermore, a heating element 211 is provided at the center of the bottom of the insertion portion 210, and the heating element 211 has a pin-shaped or blade-shaped member with a sharp tip, and And heats the aerosol-forming substrate 110. More specifically, the heating element 211 pierces the center portion of the aerosol-forming substrate 110 when the electronic cigarette cartridge 100 pierces the insertion portion 210 of the electronic cigarette body 200.

The heating element 211 directly or indirectly generates heat by electric power supplied from a battery (not shown) provided in the electronic cigarette body 200. The heat of the heating element 211 heats the aerosol-forming base material 110 to generate an aerosol containing an aroma component. Then, the generated aerosol is transferred to the mouthpiece 140 via the support member 120 and the cooling member 130 (in the case illustrated in FIG. 2B) described below, and the user inhales from the mouthpiece 140 side to generate an aroma. The ingredients will reach the mouth of the user.

Although FIG. 4 shows the case where the heating element 211 has one pin-shaped member, the heating element 211 may have a plurality of pin-shaped members.

<Supporting Member 120> The supporting member 120 supports the aerosol-forming substrate 110. The support member 120 is disposed adjacent to the aerosol-forming substrate 110 and has a central portion 121 and a plurality of side portions 122. The central portion 121 is located along the central axis of the electronic cigarette cartridge 100 in the longitudinal direction (X direction). The plurality of side portions 122 extend outward from the central portion 121 and contact the packaging member 150 located at the peripheral edge of the electronic cigarette cartridge 100. The side portion 122 is fixed to the inner surface of the packaging member 150 with an adhesive, for example.

Further, another member may be arranged between the aerosol-forming substrate 110 and the support member 120. That is, the support member 120 may be disposed with the other member sandwiched between the support member 120 and the aerosol-forming base material. Other members may include, for example, a thin filter that removes particulates of the filler 111, another support member that supports the aerosol-forming substrate 110, and the like.

As shown in FIG. 4, the support member 120 resists the force received by the electronic cigarette cartridge 100 when the heating element 211 of the electronic cigarette body 200 is inserted into the aerosol-forming substrate 110, and the aerosol-forming substrate 110 is formed. It prevents or suppresses movement in the X direction.

More specifically, since the side portion 122 of the support member 120 is fixed to the inner surface of the packaging member 150, the peripheral portion of the aerosol-forming substrate 110 can be reliably supported. Further, since the support member 120 has the central portion 121, it is possible to prevent the filling element 111 in the central portion of the aerosol-forming substrate 110 from being pushed out in the X direction by the heating element 211 inserted into the aerosol-forming substrate 110. As described above, in the support member 120 of the present embodiment, the aerosol flow path is provided in the peripheral portion, not in the central portion where the force of the heating element 211 acts.

The aerosol generated by heating the aerosol-forming base material 110 from the one end of the electronic cigarette cartridge 100 uses the space formed between the central portion 121 and the inner surface of the packaging member 150 covering the support member 120 as a flow path. Transferred to the other end (see the arrow in the figure).

Hereinafter, examples of the support member 120 will be described with reference to FIGS. 5A to 8C. 5A is a plan view of the supporting member of Example 1 as viewed from the X direction of FIG. 2A, and FIG. 5B is a side view of the supporting member of Example 1 as viewed from the Y direction of FIG. 2A. is there. Further, FIG. 6A is a plan view of the supporting member of Example 2 as viewed from the X direction of FIG. 2A, and FIG. 6B is a side view of the supporting member of Example 2 as viewed from the Y direction of FIG. 2A. It is a figure. 7A is a plan view of the supporting member of Example 3 as seen from the X direction of FIG. 2A, and FIG. 7B is a side view of the supporting member of Example 3 as seen from the Y direction of FIG. 2A. It is a figure and Drawing 7C is a side view which looked at a supporting member of Example 3 from the Z direction of Drawing 2 (A). 8A is a plan view of the supporting member of Example 4 as viewed from the X direction of FIG. 2A, and FIG. 8B is a side view of the supporting member of Example 4 as viewed from the Y direction of FIG. 2A. FIG. 8C is a side view of the support member according to the fourth embodiment as viewed from the Z direction in FIG.

Example 1 As shown in FIG. 5A, the support member 120 has a first side portion 122A and a second side portion 122B with the central portion 121 interposed therebetween. Specifically, the support member 120 has a cross section taken along a plane perpendicular to the X direction in which two peripheral portions of the disc are cut into a rectangular shape with the center of the disc sandwiched therebetween, that is, the peripheral edge is round. The shape is substantially H-shaped. The diameter of the support member 120 can be set to D0=7 mm, for example. The distance between the first side portion 122A and the second side portion 122B is preferably set to, for example, d1=2 to 3 mm.

Further, as shown in FIG. 5B, the length of the support member 120 in the X direction is preferably set to, for example, L1=8 to 26.5 mm.

(Example 2) Further, as shown in FIGS. 6A and 6B, the diameter of the support member 120 is set to, for example, D0=7 mm, and the length of the support member 120 in the X direction is, for example, L1=8 to 26. It can be set to about 0.5 mm. Moreover, the distance between the first side portion 122A and the second side portion 122B can be set to, for example, d2=1 to 2 mm.

(Example 3) As shown in FIG. 7A, the support member 120 has a first side portion 122A, a second side portion 122B, a third side portion 122C, and a fourth side portion 122D with the center portion 121 interposed therebetween. Specifically, the support member 120 has a cross section cut along a plane perpendicular to the X direction in which four peripheral portions of the disc are cut into a rectangular shape with the center of the disc sandwiched therebetween, that is, the peripheral edge is round. It has a substantially X shape. The diameter of the support member 120 can be set to D0=7 mm, for example. Further, the distance between the first side portion 122A and the third side portion 122C and the distance between the second side portion 122B and the fourth side portion 122D are preferably set to about d3=2 to 3 mm, for example. The distance between the first side portion 122A and the fourth side portion 122D and the distance between the second side portion 122B and the third side portion 122C are preferably set to about d4=1 to 2 mm, for example.

Further, as shown in FIGS. 7B and 6C, the length of the support member 120 in the X direction is preferably set to, for example, L3=8 to 26.5 mm.

(Example 4) Further, as shown in FIGS. 8A to 8C, the diameter of the support member 120 is set to, for example, D0=7 mm, and the length of the support member 120 in the X direction is, for example, L4=8 to 26. It can be set to about 0.5 mm. Further, a distance between the first side portion 122A and the fourth side portion 122D, a distance between the second side portion 122B and the third side portion 122C, a distance between the first side portion 122A and the third side portion 122C, The distance between the second side portion 122B and the fourth side portion 122D is preferably set to about d5=1 to 2 mm, for example.

Thus, in the present embodiment, the support member 120 has the central portion 121 and the plurality of side portions 122. The center part 121 and the plurality of side parts 122 may be integrally formed by using, for example, a mold. By forming the supporting member 120 into a shape as in Examples 1 to 4 described above, the supporting member 120 can be easily pulled out from the mold, and thus can be manufactured more easily than the hollow tubular supporting member.

Further, the supporting member 120 can be preferably formed by using, for example, silicone, but the supporting member 120 is not limited to silicone, and another material having excellent heat resistance may be used.

<Cooling Member 130> As shown in FIG. 2B, the cooling member 130 cools the aerosol that has passed through the support member 120. The cooling member 130 is arranged on the opposite side of the aerosol-forming substrate 110 with the support member 120 interposed therebetween, and is adjacent to the support member 120. The fragrance component contained in the aerosol generated by the aerosol-forming base material 110 is transferred to the mouthpiece 140 while being transferred to the mouthpiece 140 while being transferred along the cooling member 130 to a temperature at which a person can inhale. The cooling member 130 has, for example, a sheet containing polylactic acid, and the sheet includes a plurality of folds. Alternatively, the sheet is wound in a direction orthogonal to the X direction, or folded and contracted.

The length of the cooling member 130 in the X direction can be adjusted according to the length of the support member 120 in the X direction. As shown in FIG. 2A, when the length of the supporting member 120 in the X direction is long (for example, 26.5 mm), the supporting member 120 has a function of supporting the aerosol-forming substrate 110, and the It also has the function of cooling the contained aroma components to a temperature at which humans can inhale them. Therefore, the cooling member 130 can be omitted. As a result, the production cost of the electronic cigarette cartridge 100 can be reduced.

<Mouthpiece 140> The mouthpiece 140 is disposed adjacent to the cooling member 130 or the support member 120 and at the other end of the electronic cigarette cartridge 100. The mouthpiece 140 includes, for example, a cellulose acetate filter as a filter for removing fine particles. The aroma component that has passed through the filter of the mouthpiece 140 is sucked by the user. The mouthpiece 140 is fixed to the inner surface of the packaging member 150 with an adhesive, for example.

The support member 120 and the electronic cigarette cartridge 100 having the support member 120 of the present embodiment described above have the following effects.

A space is formed between the central portion 121 of the support member 120 and the inner surface of the packaging member 150 that covers the support member 120. Therefore, the aerosol-forming base material 110 can be stably supported by the central portion 121 when the heating element 211 is inserted into the aerosol-forming base material 110 while ensuring the flow path through which the aerosol is transferred.

Moreover, since the aerosol-forming base material 110 generates an aerosol containing a fragrance component of a non-tobacco plant, the user can enjoy the scent of the plant. It can also be used as a tobacco substitute by users with smoking habits. In addition, it is possible to improve the health of the user by generating a plant aroma component that is beneficial to the health of the user.

The present invention is not limited to the above-mentioned embodiments, but can be variously modified within the scope of the claims.

For example, in the above-described embodiment, the case where the central portion and the plurality of side portions of the support member are integrally formed has been described. However, the present invention is not limited to the case where the central portion and the plurality of side portions are integrally formed, and is configured such that the central portion and the plurality of side portions are separately formed and then joined. Good.

Further, in the above-described Examples 1 to 4, the case where the cross-section of the supporting member has a shape obtained by cutting the peripheral portion of the disk into a rectangular shape at two or four positions has been described. However, the cross section of the support member is not limited to such a shape, and may be a shape in which the peripheral edge portion of the disk is cut out in a rectangular shape at three or five or more positions, or a triangular shape, a polygonal shape instead of a rectangular shape. The shape may be a shape cut out in any form constituted by a curved line, a straight line, or a combination thereof, such as a shape, a semicircular shape, a semielliptical shape.

100 electronic cigarette cartridge, 110 aerosol forming base material, 120 support member, 121 central portion, 122, 122A, 122B, 122C, 122D side portion, 130 cooling member, 140 mouthpiece, 150 packaging member, 200 electronic cigarette body, 210 heating Element.

Claims (13)

A cartridge used by being inserted into a main body having a heating element,
An aerosol-forming substrate using a tobacco plant or a non-tobacco plant,
A mouthpiece,
A support member arranged between the aerosol-forming substrate and the mouthpiece,
A packaging member that encloses the aerosol-forming substrate, the support member, and the mouthpiece,
The predetermined cross section of the support member, which is perpendicular to the longitudinal direction of the cartridge, has a shape in which the peripheral portion is cut off at a plurality of locations,
The support member has a plurality of side portions formed along the longitudinal direction of the cartridge and having a shape cut out at the plurality of locations.
The peripheral portions of the plurality of side portions are in contact with the packaging member,
A plurality of grooves along the longitudinal direction of the cartridge are formed between each of the plurality of side portions, and a plurality of aerosol flow paths generated by the aerosol-forming substrate are formed by the plurality of grooves and the packaging member. A cartridge characterized by being formed. The cartridge according to claim 1, wherein the support member moves in the longitudinal direction of the aerosol-forming substrate against a force received by the cartridge when the heating element is inserted into the aerosol-forming substrate. A cartridge characterized in that it is configured to suppress The cartridge according to claim 1, wherein the peripheral portion of the predetermined cross section has a shape cut out at four places, the plurality of side portions are provided four, and the plurality of grooves are also provided four. A cartridge characterized by having. The cartridge according to claim 1, wherein the peripheral portion of the predetermined cross section has a shape cut out at three places, the plurality of side portions are provided three, and the plurality of grooves are also provided three. A cartridge characterized by having. The cartridge according to claim 1, wherein the support member is made of silicone. The cartridge according to claim 1, wherein the support member including the plurality of side portions is integrally formed. The cartridge according to claim 1, wherein the support member has a length that cools the fragrance component contained in the aerosol generated by the aerosol-forming base material to a temperature at which a person can inhale it. 2. The cartridge according to claim 1, wherein the support member has a shape in which the peripheral portion of the predetermined cross section is cut out at a plurality of curved portions. The cartridge according to claim 1, wherein the support member is fixed to the packaging member. The cartridge according to claim 1, wherein the mouthpiece is a filter. The cartridge according to claim 1, wherein the aerosol-forming substrate contains tea, glycerin, or oil. The cartridge according to claim 1, wherein the aerosol-forming substrate has a granular form. The cartridge according to claim 1, wherein the aerosol-forming substrate has a rectangular shape.